CN217461950U - Door head return air duct sound insulation structure - Google Patents

Abstract

The utility model provides a door head return air duct sound insulation structure, including door frame, the door body, door head and hinge, the door head is arranged directly over the door body, the door frame wraps the outside at the door body and door head around, one side of the door body passes through hinge swing joint with the door frame, door head and door frame fixed connection, the door frame comprises angle bead door plant and side guard plate; the front side of the door head is provided with a positive air return inlet, the back side of the door head is provided with a negative air return inlet, a bow-shaped air return channel is arranged in the door head, and two ends of the air return channel are respectively communicated with the positive air return inlet and the negative air return inlet. In this application, set up the return air passageway of bow font through the baffle in the door head to utilize and paste the fire-retardant sound cotton of inhaling of high density at return air passageway surface and baffle surface, make the sound wave when the bow font structure through this return air passageway, not only prolonged the transmission distance, can also absorb the energy of sound wave in the transmission course, with this purpose of making an uproar that reaches, improved syllable-dividing effect.

Description

Door head return air duct sound insulation structure

Technical Field

The utility model relates to a field is made to the door industry, especially relates to a first return air duct sound-proof construction of door.

Background

With the development of urbanization, more and more people live into urban apartment buildings. The apartment building comprises a plurality of bedrooms, one side of each bedroom is provided with a window, the other side of each bedroom is provided with a wall body and a door, a central fresh air filtering system arranged in each bedroom needs to independently supply air to each bedroom, air return is unified in a walkway or a living room, namely, an air return groove needs to be arranged on the door of each bedroom, the air return groove can cause crosstalk inside and outside the bedroom after the indoor door is closed, the sound insulation effect inside and outside the bedroom is greatly reduced, and the living quality is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a door first return air groove sound-proof structure sets up syllable-dividing function in the overhead return air inslot that adds of door, when having ventilation function, avoids the room to be infected by external noise.

In order to achieve the above object, the utility model provides a door head return air duct sound insulation structure, including door frame, door body, door head and hinge, the door head is arranged in directly over the door body, the door frame wraps the outside at the door body and door head, one side of the door body with the door frame through hinge swing joint, the door head with the door frame fixed connection;

the front of door head is equipped with positive return air inlet, and the back is equipped with the negative return air inlet, be equipped with the return air passageway of bow font in the door head, the both ends of return air passageway respectively with positive return air inlet and negative return air inlet lead to, the inboard laminating of return air passageway is equipped with fire-retardant sound cotton of inhaling.

Furthermore, in the sound insulation structure of the air return duct of the door head, at least one raised partition plate is arranged in the door head, and the partition plates are arranged in a vertically staggered manner.

Further, in the sound insulation structure of the door head return air duct, the positive return air inlet and the negative return air inlet are both open elongated slots which are attached to the top side end of the door head.

Further, in the door head return air duct sound insulation structure, the width of the return air channel is 25-45 mm.

Further, in the sound insulation structure of the door head air return duct, the thickness of the flame-retardant sound-absorbing cotton is 10-20 mm.

Furthermore, in the sound insulation structure of the door head return air duct, the door frame is composed of a corner protection door plate and a side protection plate, a door stopping strip is arranged on the inner side surface of the side protection plate, and one side edge of the door stopping strip abuts against the door body.

Furthermore, in the door head return air duct sound insulation structure, an anti-collision sealing strip is arranged on one side of the door barrier strip, which is opposite to the door body.

Furthermore, in the sound insulation structure of the door head return air duct, a clamping groove is formed in the side edge of the door stop strip, one end side of the anti-collision sealing strip is an arc-shaped abutting portion, the other end of the anti-collision sealing strip is a strip-shaped plug portion, the abutting portion abuts against the door body, the plug portion is embedded and clamped in the clamping groove, and protruding sawtooth structures are arranged on two sides of the plug portion.

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: the arched air return channel is arranged in the door head through the partition plate, and the high-density flame-retardant sound-absorbing cotton is adhered to the surface of the air return channel and the surface of the partition plate, so that the transmission distance of sound waves is prolonged, the energy of the sound waves can be absorbed in the transmission process when the sound waves pass through the arched structure of the air return channel, the purpose of noise reduction is achieved, and the sound insulation effect is improved.

Drawings

Fig. 1 is a schematic structural view of the sound insulation structure of the middle door return duct of the present invention;

FIG. 2 is a bottom view of FIG. 1;

fig. 3 is a schematic structural view of an embodiment of the sound insulation structure of the middle door return duct of the present invention;

fig. 4 is a schematic structural view of another embodiment of the sound insulation structure of the middle door return duct of the present invention;

fig. 5 is a schematic structural view of the middle door stop strip of the present invention.

Wherein: the door comprises a door frame 1, a corner protection door plate 11, a side protection plate 12, a door body 2, a door head 3, a hinge 4, a door blocking strip 51, an anti-collision sealing strip 52, a butting part 521, a plug part 522, a clamping groove 53, a positive air return opening 61, a negative air return opening 62, an air return channel 63, a partition plate 64 and flame-retardant sound-absorbing cotton 7.

Detailed Description

The door return duct acoustic baffle structure of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the present invention are shown, it being understood that those skilled in the art may modify the invention herein described while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1, the utility model provides a door head return air duct sound-proof structure, including door frame 1, the door body 2, door head 3 and hinge 4, door head 3 is arranged in directly over the door body 2, door frame 1 is in around the package the outside of the door body 2 and door head 3, one side of the door body 2 with door frame 1 passes through hinge 4 swing joint, door head 3 with 1 fixed connection of door frame.

As shown in fig. 3 to 4, the front surface of the door head 3 is provided with a positive air return opening 61, the back surface of the door head 3 is provided with a negative air return opening 62, and the door head 3 is internally provided with a bow-shaped air return channel 63, so that the transmission distance of wind noise is prolonged. Two ends of the return air channel 63 are respectively communicated with the positive return air inlet 61 and the negative return air inlet 62, and the inner side of the return air channel 63 is provided with flame-retardant sound-absorbing cotton 7 in a fit mode.

Further, as shown in fig. 3 to 4, at least one protruding partition plate 64 is arranged in the door head 3, the partition plates 64 are staggered up and down, and the positive air return opening 61 and the negative air return opening 62 are open long grooves attached to the top end of the door head 3. Preferably, the width of return air passageway 63 ~ 45mm, the thickness of cotton 7 is inhaled to fire-retardant sound is 10 ~ 20mm, and the surface of cotton 7 is inhaled to fire-retardant sound is equipped with a plurality of raised grains, has increased sound effect of inhaling. Tests show that the sound insulation structure can reduce 25 db-30 db inside and outside a room, and achieves the sound insulation effect of a common indoor door.

Specifically, as shown in fig. 3, in combination with a door provided on a wall body with a thickness of 100mm, a protruding partition plate 64 is provided in the door head 3, and a bow-shaped return air channel 63 is provided in the door head 3 and is U-shaped. As shown in figure 4, the door head 3 is provided with three raised partition plates 64 which are arranged up and down in a staggered way, and the door head 3 is provided with a W-shaped return air channel 63 which is matched with a door arranged on a wall body with the thickness of 240 mm.

The specific implementation process is as follows: airflow with sound waves enters the arched air return channel 63 from the positive air return opening 61, collides with the blocked partition plate 64 and then rebounds to the partition plate 64 on the other side or the inner wall of the door head 3, the airflow rebounds back and forth in the air return channel 63 and moves along the length direction, and finally is discharged from the negative air return opening 62, and when the airflow in the air return channel 63 collides with the partition plate 64 or the inner wall of the door head 3 every time, the flame-retardant sound-absorbing cotton 7 conducts loss and wear elimination on the sound waves in the contacted airflow, the energy of the sound waves in the rebounded airflow is reduced, the flame-retardant sound-absorbing cotton 7 can effectively absorb the energy in the sound waves through collision with the flame-retardant sound-absorbing cotton 7 for many times, so that the discharged airflow does not carry the sound waves any more, and the sound insulation effect is achieved.

In addition, in this embodiment, as shown in fig. 2, the door frame 1 is composed of a corner guard door panel 11 and a side guard panel 12, a door stop strip 51 is arranged on an inner side surface of the side guard panel 12, one side edge of the door stop strip 51 abuts against the door body 2, and a crash seal 52 is arranged on a side of the door stop strip 51, which faces the door body 2.

Specifically, as shown in fig. 5, a clamping groove 53 is formed on a side edge of the door stopper 51, one end side of the anti-collision sealing strip 52 is an arc-shaped abutting portion 521, the other end side of the anti-collision sealing strip is a strip-shaped plug portion 522, the abutting portion 521 abuts against the door body 2, and the plug portion 522 is embedded in the clamping groove 53. Simultaneously, the both sides of cock portion 522 are equipped with bellied sawtooth structure, and the block that can be better is on draw-in groove 53 inner wall, has increased the frictional force between the connection structure of cock portion 522 and draw-in groove 53, avoids the pine to take off.

In conclusion, in the embodiment, the proposed sound insulation structure for the door head air return groove is characterized in that the arched air return channel is arranged in the door head through the partition plate, and the high-density flame-retardant sound absorption cotton is adhered to the surface of the air return channel and the surface of the partition plate, so that when sound waves pass through the arched structure of the air return channel, the transmission distance is prolonged, the energy of the sound waves can be absorbed in the transmission process, the purpose of reducing noise is achieved, and the sound insulation effect is improved.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims (8)

1. The door head air return duct sound insulation structure is characterized by comprising a door frame (1), a door body (2), a door head (3) and a hinge (4), wherein the door head (3) is arranged right above the door body (2), the door frame (1) is wrapped on the outer sides of the door body (2) and the door head (3), one side of the door body (2) is movably connected with the door frame (1) through the hinge (4), and the door head (3) is fixedly connected with the door frame (1);

the front of door head (3) is equipped with positive return air inlet (61), and the back is equipped with negative return air inlet (62), be equipped with return air passageway (63) of bow font in the door head (3), the both ends of return air passageway (63) respectively with positive return air inlet (61) and negative return air inlet (62) lead to even, the inboard laminating of return air passageway (63) is equipped with fire-retardant sound cotton (7) of inhaling.

2. The sound insulation structure of the return duct of the door head according to claim 1, wherein at least one raised partition plate (64) is arranged in the door head (3), and the partition plates (64) are arranged in a staggered manner.

3. The door head return duct sound-insulating structure according to claim 1, wherein the positive return air inlet (61) and the negative return air inlet (62) are both open elongated slots provided to be attached to the top side end of the door head (3).

4. The door head return duct sound-insulating structure according to claim 1, wherein the width of the return air duct (63) is 25 to 45 mm.

5. The door return duct sound insulation structure according to claim 1, wherein the flame retardant sound absorbing cotton (7) has a thickness of 10 to 20 mm.

6. The door head return duct sound insulation structure according to claim 1, wherein the door frame (1) is composed of a corner protection door panel (11) and a side protection plate (12), a door stopping strip (51) is arranged on the inner side surface of the side protection plate (12), and one side edge of the door stopping strip (51) abuts against the door body (2).

7. The sound insulation structure of the door head return duct according to claim 6, wherein an anti-collision sealing strip (52) is arranged on one side of the door stop strip (51) opposite to the door body (2).

8. The door head return air duct sound insulation structure according to claim 7, wherein a clamping groove (53) is formed in the side edge of the door stop strip (51), one end side of the anti-collision sealing strip (52) is an arc-shaped abutting portion (521), the other end of the anti-collision sealing strip is a strip-shaped plug portion (522), the abutting portion (521) abuts against the door body (2), the plug portion (522) is embedded and clamped in the clamping groove (53), and two sides of the plug portion (522) are provided with raised sawtooth structures.

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