CN207540071U - A kind of new wind turbine - Google Patents

Abstract

The utility model provides a fresh air fan. The shell is provided with a fresh air inlet and a fresh air supply port. A group of filter screens are arranged at the fresh air inlet. The outlet of the low-temperature side is equipped with a blower, and the outlet of the blower corresponds to the fresh air supply port; the casing is also provided with an exhaust air inlet and an exhaust air outlet, and another set of filters is installed at the exhaust air inlet, and the air outlet side of this set of filters is connected to the The inlet of the low and high temperature side of the total heat exchange core, and the outlet of the high temperature side of the total heat exchange core are equipped with an exhaust fan, and the outlet of the exhaust fan corresponds to the exhaust air outlet; the exhaust air outlet of the fresh fan and the fresh air supply outlet are equipped with mufflers. The utility model can obviously reduce the noise generated by the fan through the arrangement of the muffler, and has a good noise reduction effect; while users can enjoy the fresh and clean air, they are not affected by the noise of the machine, and the user experience effect is improved.

Description

a new fan

technical field

The utility model relates to a fresh air fan, which belongs to the technical field of fresh air equipment.

Background technique

With the improvement of people's living standards, the requirements for quality of life have also increased accordingly, and more and more people choose to install fresh air fans.

The fresh air fan is an effective air purification equipment that can circulate the indoor air. On the one hand, the indoor dirty air is discharged outside, and on the other hand, the fresh outdoor air is sterilized, disinfected, filtered and other measures, and then input into the room. , so that the room is fresh and clean air all the time.

But the problem that comes with it is the noise problem, and the greater the air volume, the noise will increase accordingly.

Utility model content

The technical problem to be solved by the utility model is how to reduce the noise of the fresh air fan.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is to provide a fresh air fan, which is characterized in that: it includes a shell, and the shell is provided with a filter screen, a total heat exchange core, a blower fan, and an exhaust fan;

The shell is provided with a fresh air inlet and a fresh air supply port, and a set of filter screens is installed at the fresh air inlet, and the air outlet side of the filter screen is connected to the low temperature side inlet of the full heat exchange core, and a blower is installed at the low temperature side outlet of the full heat exchange core, and the blower outlet corresponds to fresh air outlet;

There are also exhaust air inlets and exhaust air outlets on the shell, and another set of filters is installed at the exhaust air inlets. The air outlet side of this set of filters is connected to the low and high temperature side inlet of the full heat exchange core. The side outlet is equipped with an exhaust fan, and the outlet of the exhaust fan corresponds to the exhaust air outlet;

Both the exhaust air outlet of the fresh air fan and the fresh air supply air outlet are provided with mufflers.

Preferably, the muffler includes a muffler flange, the muffler flange is integrally welded with the sound-absorbing mesh, and the muffler cotton cover is arranged outside the muffler flange.

More preferably, the sound-absorbing cotton cover plate and the sound-absorbing flange are fixed by blind rivets.

More preferably, the hollow part between the sound-absorbing cotton cover plate and the sound-absorbing flange is filled with sound-absorbing cotton.

More preferably, the sound-absorbing mesh has a hole diameter of 6mm and a hole spacing of 8mm.

Preferably, a suspender is provided outside the casing.

Preferably, air pipe flanges are provided at the exhaust air inlet, exhaust air outlet, fresh air inlet, and fresh air supply outlet.

Preferably, both the total heat exchange core and the filter screen are clamped in the housing through fixing strips made of sheet metal.

When in use, the fresh air enters from the fresh air inlet, and after filtering and total heat exchange treatment, the blower enters the room from the fresh air supply port through the silencer; the indoor exhaust air enters from the exhaust air inlet, and after filtering and total heat exchange, The treated exhaust gas is discharged to the outside through the exhaust fan and muffler from the exhaust outlet.

According to the noise laboratory test, when the length of the sound-absorbing mesh is 100mm, the noise can be reduced by at least 4dB; when the length of the sound-absorbing mesh is 600mm, the noise can be reduced by 10-15dB.

The device provided by the utility model overcomes the deficiencies of the prior art, and has a simple and reasonable structure. The noise generated by the fan can be significantly reduced through the setting of the muffler, and the noise reduction effect is good; while the users enjoy the fresh and clean air, It is also not affected by machine noise, and the user experience effect is improved.

Description of drawings

Figure 1 is a top view of the fresh air blower provided in this embodiment;

Fig. 2 is the front view of the fresh air blower that this embodiment provides;

Figure 3 is a disassembled view of the muffler;

Explanation of reference signs:

1-muffler; 2-muffling cotton; 3-fan; 4-hanger; 5-air pipe flange; 6-distribution box; 7-filter; -door hinge; 11-sound-absorbing cotton cover; 12-sound-absorbing flange; 13-sound-absorbing mesh;

A-exhaust air outlet; B-exhaust air inlet; C-fresh air inlet; D-fresh air supply port.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Fig. 1 and Fig. 2 are the top view and the front view of the fresh air blower provided by this embodiment, respectively. The fresh air blower includes a casing, a suspension rod 4 is arranged outside the casing, and a total heat exchange core 9 and two fans 3 are arranged inside the casing. One of the two fans 3 is used as a blower fan, and the other is used as an exhaust fan.

The shell is provided with a fresh air inlet C and a fresh air supply port D, and a set of filters 7 is provided at the fresh air inlet C, and the air outlet side of the set of filters 7 is connected to the inlet of the low-temperature side of the total heat exchange core 9, and the total heat exchange core 9 is low-temperature The side outlet is provided with a blower, and the outlet of the blower corresponds to the fresh air supply port D.

The shell is also provided with an exhaust air inlet B and an exhaust air outlet A, and another set of filter screens 7 is provided at the exhaust air intake B, and the air outlet side of this set of filter screens 7 is connected to the full heat exchange core 9 low and high temperature side inlets , the outlet of the high temperature side of the full heat exchange core 9 is provided with an exhaust fan, and the outlet of the exhaust fan corresponds to the exhaust air outlet A.

Air duct flanges 5 are installed at exhaust air inlet B, exhaust air outlet A, fresh air inlet C, and fresh air supply outlet D.

Both the exhaust air outlet A of the fresh air fan and the fresh air supply outlet D are equipped with silencers 1. The muffler 1 is mainly composed of a sound-absorbing cotton cover plate 11, a sound-absorbing flange 12, a sound-absorbing mesh 13, and a sound-absorbing cotton 2.

Wherein, the sound-absorbing flange 12 is integrally welded with the sound-absorbing mesh 13 . The sound-absorbing cotton cover plate 11 is installed on the outside of the sound-absorbing flange 12, and is fixed with the sound-absorbing flange 12 by a blind rivet. The hollow part between the sound-absorbing cotton cover plate 11 and the sound-absorbing flange 12 is filled with sound-absorbing cotton 2 .

The aperture of the sound-absorbing mesh 13 is 6mm, and the hole spacing is 8mm.

The fresh air fan provided in this embodiment is a full heat exchange fresh air fan. The door panels are connected by door hinges 10 and buckles 8, and other sheet metal parts are connected by blind rivets. The full heat exchange core 9 and the filter screen 7 are not fixed. The fixing strip made of sheet metal is stuck, which does not affect the pull-out replacement.

The working principle of the fresh air fan provided in this embodiment is as follows: the fresh air enters from the fresh air inlet C, and after filtering and total heat exchange treatment, the blower enters the room from the fresh air outlet D through the silencer; the indoor exhaust air enters from the exhaust air The outlet B enters, and after filtration and total heat exchange, the treated exhaust gas is discharged to the outside through the exhaust fan and muffler from the exhaust outlet.

As verified by noise laboratory tests, when the length of the sound-absorbing mesh 13 is 100mm, the noise can be reduced by at least 4dB; when the length of the sound-absorbing mesh 13 is 600mm, the noise can be reduced by 10-15dB.

The utility model has a simple and reasonable structure, can obviously reduce the noise generated by the blower fan, and has good noise reduction effect. While enjoying the fresh and clean air, the user is not affected by the noise of the machine, and the user experience effect is improved.

Claims (8)

1. a kind of new wind turbine, it is characterised in that：Including shell, filter screen (7), Total heat exchange core (9), air-supply are equipped in shell Machine, exhaust blower；

Shell is equipped with fresh air air inlet (C) and fresh air outlet (D), and one group of filter screen (7) is equipped at fresh air air inlet (C), Filter screen (7) air side connects Total heat exchange core (9) low temperature side entrance, and Total heat exchange core (9) low temperature side outlet is equipped with pressure fan, The corresponding fresh air outlet (D) in pressure fan outlet；

Air draft air inlet (B) and air draft air outlet (A) are additionally provided on shell, another group of filter screen is equipped at air draft air inlet (B) (7), the low high temperature side entrance of this group of filter screen (7) air side connection Total heat exchange core (9), Total heat exchange core (9) high temperature side outlet Equipped with exhaust blower, the corresponding air draft air outlet (A) in exhaust blower outlet；

Muffler (1) is equipped at the new air draft air outlet (A) of wind turbine and fresh air outlet (D).

2. a kind of new wind turbine as described in claim 1, it is characterised in that：The muffler (1) includes noise reduction flange (12), disappears Sound flange (12) and sound-absorbing mesh (13) integral solder, silencing cotton cover board (11) are external set on noise reduction flange (12).

3. a kind of new wind turbine as claimed in claim 2, it is characterised in that：The silencing cotton cover board (11) and noise reduction flange (12) It is fixed by self-plugging rivet.

4. a kind of new wind turbine as claimed in claim 2 or claim 3, it is characterised in that：The silencing cotton cover board (11) and noise reduction flange (12) the hollow space filling silencing cotton (2) between.

5. a kind of new wind turbine as claimed in claim 2, it is characterised in that：The aperture 6mm of the sound-absorbing mesh (13), pitch of holes 8mm。

6. a kind of new wind turbine as described in claim 1, it is characterised in that：The housing exterior is equipped with sunpender (4).

7. a kind of new wind turbine as described in claim 1, it is characterised in that：The air draft air inlet (B), air draft air outlet (A), Air duct flange (5) is equipped at fresh air air inlet (C), fresh air outlet (D).

8. a kind of new wind turbine as described in claim 1, it is characterised in that：The Total heat exchange core (9) and filter screen (7) are logical The fixed strip that metal plate is done is crossed to be arranged in shell.