CN217354936U - Fan and gas water heater comprising same - Google Patents

Abstract

The utility model provides a fan and contain its gas heater, fan include the casing, the chamber that holds of casing is used for placing the impeller, the casing includes first lateral wall, be equipped with on the first lateral wall with hold the opening that the chamber is linked together, the fan still includes the housing, the housing is located first lateral wall, and with first lateral wall forms inclosed cavity, the opening is located in the cavity, the lateral wall of housing is equipped with the fresh air inlet. During rotation of the impeller, the noise it generates is transmitted to the chamber through the opening. When noise acts on the end plate of the housing, the housing gives a reaction force to the noise, so that the noise can return to the chamber, thereby canceling out the noise transmitted from the accommodating chamber, and reducing the noise. In addition, the air inlet hole is formed in the side wall of the housing, so that the possibility that noise escapes from the fan through the air inlet hole is reduced, and the possibility that an operator hears the noise is also reduced.

Description

Fan and gas water heater comprising same

Technical Field

The utility model relates to a fan and contain its gas heater.

Background

Noise is a very important performance index for a fan, and under the condition of ensuring certain pressure and air volume, the lower the noise of the fan is, the higher the design level is marked. Wherein the noise is mainly generated by the rotation of the impeller. The method for reducing the noise of the fan is various, and besides improvement from the fan, an accessory matched with the fan for use can also be designed to achieve a very good noise reduction effect. In the air in the atmosphere was inhaled the cascade channel of high-speed rotation from centrifugal fan's air intake, the velocity of flow of air was by rapid increase to with take place the striking between the blade, produce certain noise in air intake department, reduced user's experience and felt.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is in order to overcome the air in the prior art atmosphere from centrifugal fan's air intake by the suction to the cascade passageway of high-speed rotation, the velocity of flow of air is by rapid increase to and take place the striking between the blade, produce certain noise in air intake department, reduced the defect that user's experience was felt, provide a fan and contain its gas heater.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model discloses a fan, which comprises a housin, the chamber that holds of casing is used for placing the impeller, the casing includes first lateral wall, be equipped with on the first lateral wall with hold the opening that the chamber is linked together, the fan still includes the housing, the housing is located first lateral wall, and with first lateral wall forms inclosed cavity, the opening is located in the cavity, the lateral wall of housing is equipped with the fresh air inlet.

In this scheme, adopt above-mentioned structural style, it is rotatory to hold the impeller of intracavity to form the vacuum in holding the chamber, make outside air by the extrusion in hold the chamber. During rotation of the impeller, the noise it generates is transmitted to the chamber through the opening. When noise acts on the end plate of the housing, the end plate can give a reaction force to the noise, so that the noise can return to the cavity, and the noise can be counteracted with the noise transmitted from the containing cavity, and the noise is reduced. In addition, the air inlet hole is formed in the side wall of the housing, so that the possibility that noise escapes from the air inlet hole to the fan is reduced, and the possibility that an operator hears the noise is also reduced.

Preferably, the air inlet hole is a plurality of, and is a plurality of the air inlet hole is around the lateral wall circumference interval setting of housing.

In this scheme, during the outside air got into from the fresh air inlet and holds the chamber. Adopt above-mentioned structural style, improved the possibility that outside air got into and holds the chamber. In addition, the number of the air inlet holes is multiple, the diameter of each air inlet hole is small, and the possibility that noise escapes from the air inlet holes to the external environment is reduced.

Preferably, the housing comprises a noise reduction plate, and a region of the noise reduction plate facing the opening is provided with a first curved surface recessed in a direction away from the opening.

In this scheme, adopt above-mentioned structural style, improved the possibility that the noise was returned to and is held in the chamber through first curved surface.

Preferably, the first curved surface is a spherical surface.

Preferably, the outer peripheral side of the first curved surface has a second curved surface, the second curved surface is located on a side of the noise reduction plate facing the opening, and the second curved surface protrudes in a direction approaching the opening.

In this scheme, adopt above-mentioned structural style, through the combination of first curved surface and second curved surface, further improved the noise through the second curved surface and returned the possibility that holds in the chamber.

Preferably, the fan further includes a separation plate, the separation plate is circumferentially disposed around the opening, a gap is formed between one end of the separation plate, which is away from the opening, and the noise reduction plate, the separation plate divides the chamber into a first chamber and a second chamber, the first chamber is located in the separation plate, and the second chamber is located between the separation plate and the housing.

In this scheme, adopt above-mentioned structural style, the noise that holds the chamber transmits the first curved surface on the board of making an uproar to fall from first cavity to take place the effort with first curved surface. Under the action of the first curved surface, the noise returns to the first chamber or the second chamber. When the noise returns to the first chamber, the noise can be counteracted with the noise transmitted from the containing cavity, thereby reducing the noise. In addition, noise can also be transmitted into the second chamber from the first chamber, and the noise is returned to the second chamber from the noise reduction plate, so that the noise collides with the side wall of the second chamber, and the noise is also reduced by multiple collisions with the second chamber.

Preferably, the first curved surface faces the first chamber.

In this scheme, hold in the chamber noise can act on the board of making an uproar falls after first cavity. By adopting the structure, the first curved surface is opposite to the first cavity, the possibility of noise acting on the first curved surface is increased, and the noise reduction effect is improved.

Preferably, the second curved surface portion faces the first chamber;

or all the second curved surfaces are positioned outside the first cavity.

Preferably, the surface of the noise reduction plate facing the opening is coated with a sound absorbing material.

In this scheme, adopt above-mentioned structural style, through falling the sound absorbing material on the board of making an uproar, further improved the noise cancelling effect of fan.

The utility model discloses a gas water heater, gas water heater includes as above fan.

In this scheme, adopt above-mentioned structural style, can be applied to gas heater with the fan, reduced the possibility that noise produced among the gas heater.

The utility model discloses an actively advance the effect and lie in:

the impeller in the receiving chamber is rotated to form a vacuum in the receiving chamber, so that outside air is pressed into the receiving chamber. During rotation of the impeller, the noise it generates is transmitted to the chamber through the opening. When noise acts on the end plate of the housing, the housing gives a reaction force to the noise, so that the noise can return to the chamber, thereby canceling out the noise transmitted from the accommodating chamber, and reducing the noise. In addition, the air inlet hole is formed in the side wall of the housing, so that the possibility that noise escapes from the air inlet hole to the fan is reduced, and the possibility that an operator hears the noise is also reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of a blower according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a fan according to an embodiment of the present invention;

fig. 3 is a schematic view of a fan according to an embodiment of the present invention.

Description of reference numerals:

fan 1

Housing 11

Accommodating chamber 111

First side wall 112

Opening 113

Housing 12

Noise reduction plate 121

First curved surface 1211

Second curved surface 1212

Chamber 13

First chamber 131

Second chamber 132

Separation plate 14

Air inlet 15

Detailed Description

The present invention will be more clearly and completely described in the following detailed description of the preferred embodiments in conjunction with the accompanying drawings.

As shown in fig. 1 to 3, the present embodiment provides a fan 1, including a casing 11 and a casing 12, a containing cavity 111 of the casing 11 is used for placing an impeller, the casing 11 includes a first side wall 112, an opening 113 communicated with the containing cavity 111 is provided on the first side wall 112, the casing 12 is provided on the first side wall 112 and forms a closed chamber 13 with the first side wall 112, the opening 113 is located in the chamber 13, and an air inlet 15 is provided on a side wall of the casing 12. Specifically, when the blower 1 is operated, the impeller inside the accommodating chamber 111 rotates to form a vacuum in the accommodating chamber 111, so that outside air is pressed into the accommodating chamber 111. During rotation of the impeller, the noise it generates is transmitted to the chamber 13 through the opening 113. When noise acts on the end plate of the housing 12, the end plate gives a reaction force to the noise so that the noise can be returned to the chamber 13, thereby canceling out the noise transmitted from the receiving chamber 111 and reducing the magnitude of the noise. In addition, the air inlet holes 15 are formed in the side wall of the housing 12, which reduces the possibility that noise escapes from the air inlet holes 15 to the fan 1, and reduces the possibility that an operator hears the noise. In other embodiments, a portion of the opening 113 may be located within the chamber 13.

As can be appreciated by referring to fig. 1 to 3, the air inlet openings 15 are plural, and the plural air inlet openings 15 are circumferentially spaced around the side wall of the housing 12. Specifically, the outside air enters the accommodating chamber 111 from the air inlet hole 15. With the above structure, the possibility of the outside air entering the accommodating chamber 111 is improved. In addition, the number of the air inlet holes 15 is multiple, so that the diameter of each air inlet hole 15 is smaller, and the possibility that noise escapes from the air inlet holes 15 to the external environment is reduced.

When the utility model is used, the air inlet hole 15 is provided with a plurality of layers, and the air inlet hole 15 on each layer is arranged along the circumferential direction of the side wall of the housing 12 at intervals.

As shown in fig. 1, the housing 12 includes a noise reduction plate 121, and a region of the noise reduction plate 121 facing the opening 113 has a first curved surface 1211 that is recessed away from the opening 113. Specifically, the directions in which the respective noises are transmitted to the noise reduction plate 121 may be different, and the possibility of the noise being returned into the accommodating chamber 111 is increased by the first curved surface 1211. Preferably, the first curved surface 1211 is a spherical surface. In other embodiments, the first curved surface 1211 may have other curved shapes, which is not limited herein.

As will be understood with reference to fig. 1, the outer periphery of the first curved surface 1211 has a second curved surface 1212, the second curved surface 1212 is located on a side of the noise reduction plate 121 facing the opening 113, and the second curved surface 1212 protrudes toward the opening 113. With the above-described configuration, the possibility of noise being returned into the accommodation chamber 111 is further increased by the combination of the first curved surface 1211 and the second curved surface 1212.

The fan 1 further includes a separating plate 14, the separating plate 14 is disposed circumferentially around the opening 113, a gap is formed between one end of the separating plate 14, which is away from the opening 113, and the noise reduction plate 121, the separating plate 14 divides the chamber 13 into a first chamber 131 and a second chamber 132, the first chamber 131 is located in the separating plate 14, and the second chamber 132 is located between the separating plate 14 and the housing 12. Specifically, the noise of the accommodating cavity 111 is transmitted from the first chamber 131 to the first curved surface 1211 of the noise reduction plate 121, and acts on the first curved surface 1211. The noise returns to the first chamber 131 or the second chamber 132 by the first curved surface 1211. The noise returning to the first chamber 131 is offset by the noise transmitted from the receiving cavity 111, thereby reducing the noise. In addition, the noise may also be transmitted from the first chamber 131 into the second chamber 132, and the noise collides with the sidewall of the second chamber 132 as the noise returns from the noise reduction plate 121 to the second chamber 132, and the noise may also be reduced by colliding the noise with the second chamber 132 for multiple times. With the adoption of the structure form, noise reduction can be realized through the first chamber 131 and the second chamber 132, and the noise reduction effect is improved.

In particular use, the separating plate 14 is integrally formed with the housing 11, thereby improving the strength of the connection between the housing 11 and the separating plate 14. In other embodiments, the separating plate 14 may be provided separately from the housing 11, and the separating plate 14 may be fixedly connected to the opening 113.

The first curved surface 1211 faces the first chamber 131. Specifically, the noise in the accommodating cavity 111 may act on the noise reduction plate 121 after passing through the first chamber 131. With the above configuration, since the first curved surface 1211 faces the first chamber 131, the possibility of noise acting on the first curved surface 1211 increases, and the noise reduction effect is improved. In other embodiments, the first curved surface 1211 may partially face the first chamber 131, and is not limited herein.

In this embodiment, the second curved surface 1212 faces the first chamber 131 partially. In other embodiments, all of the second curved surfaces 1212 are located outside the first chamber 131.

The surface of the noise reduction plate 121 facing the opening 113 is coated with a sound absorbing material, so that the noise reduction effect of the fan 1 can be further improved.

The embodiment also provides a gas water heater, which comprises a fan 1. By adopting the structure, the fan 1 can be applied to the gas water heater, and the possibility of noise generation in the gas water heater is reduced.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims (10)

1. The utility model provides a fan, includes the casing, the chamber that holds of casing is used for placing the impeller, the casing includes first lateral wall, be equipped with on the first lateral wall with hold the opening that the chamber is linked together, a serial communication port, fan still includes the housing, the housing is located first lateral wall, and with first lateral wall forms inclosed cavity, the opening is located in the cavity, the lateral wall of housing is equipped with the fresh air inlet.

2. The fan as claimed in claim 1 wherein said air inlet openings are plural and are spaced circumferentially around said side wall of said housing.

3. The fan of claim 1 wherein the shroud includes a noise reduction plate, the area of the noise reduction plate facing the opening having a first curved surface that is concave away from the opening.

4. The fan of claim 3 wherein the first curved surface is a spherical surface.

5. The fan according to claim 3, wherein an outer peripheral side of the first curved surface has a second curved surface on a side of the noise reduction plate facing the opening, the second curved surface protruding in a direction approaching the opening.

6. The fan of claim 5 further comprising a separator plate disposed circumferentially about the opening, the separator plate having a gap between an end thereof remote from the opening and the noise reduction plate, the separator plate dividing the chamber into a first chamber and a second chamber, the first chamber being located within the separator plate, the second chamber being located between the separator plate and the housing.

7. The fan of claim 6 wherein the first curved surface faces the first chamber.

8. The fan according to claim 6, wherein the second curved portion faces the first chamber;

or all the second curved surfaces are positioned outside the first cavity.

9. The fan as claimed in claim 3, wherein a surface of the noise reduction plate facing the opening is coated with a sound absorbing material.

10. A gas water heater, characterized in that it comprises a fan according to any one of claims 1-9.

Images