CN214370886U

CN214370886U - Fresh air conditioner

Info

Publication number: CN214370886U
Application number: CN202120139110.1U
Authority: CN
Inventors: 李怀成; 司理涛; 王庆杰; 王涛
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-10-08
Anticipated expiration: 2031-01-19

Abstract

The utility model discloses a fresh air air conditioner, comprising: a fresh air device; a ventilation channel, which is communicated with the fresh air device, and is used to realize the conveyance between indoor and outdoor airflow and the fresh air device; The main muffler pipe communicates with the ventilation channel and is located on the airflow path of the ventilation channel; the wavelength tube assembly includes a plurality of 1/4 wavelength tubes, the lengths of the plurality of 1/4 wavelength tubes are different, and the multiple 1/4 wavelength tubes are It is arranged on the outer wall of the main muffler pipe and communicated with the main muffler pipe. The utility model solves the problems in the prior art that the fresh air air conditioner has medium and low frequency broadband noise during use, and the user's use effect is poor.

Description

Fresh air conditioner

Technical Field

The utility model relates to a domestic appliance equipment technical field especially relates to a new trend air conditioner structure's improvement.

Background

The existing ceiling hidden type fresh air conditioner can generate large noise when air flow flows in a ventilation channel due to the operation of the fresh air conditioner after being installed in a ceiling, the noise is tested and verified, the noise is known to belong to low-frequency and medium-frequency broadband noise, the energy range is mainly within 200-1000 Hz, and noise energy in the frequency range can be reduced by adopting noise reduction means, so that the noise can be solved.

The existing method for eliminating pipeline noise generally adopts a pipeline silencer, which mainly comprises a resistive silencer and a reactive silencer. The resistive muffler absorbs noise energy by using a porous sound absorption material, and mainly plays a role in high-frequency noise. The reactive muffler utilizes the principles of sound wave reflection and interference to reflect noise back to a sound source or promote the reflected sound wave and incident sound wave to generate coherent superposition cancellation and the like to reduce the noise, and the reactive muffler mainly eliminates single-frequency noise or narrow-band noise. Both of the two silencers cannot be used for eliminating the noise of the channel and cannot meet the use requirements.

SUMMERY OF THE UTILITY MODEL

For solving among the prior art new trend air conditioner when using the problem that has well low frequency wide band noise, the utility model provides a novel new trend air conditioner, its silencing device through setting up on ventilation channel can carry out effectual elimination, the noise cancelling effect good to the well low frequency wide band noise among the new trend air conditioner.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a fresh air conditioner, include: a fresh air device;

the ventilation channel is communicated with the fresh air device and is used for inputting outdoor airflow flowing through the fresh air device into the room and outputting indoor airflow flowing through the fresh air device to the outside;

silencing device, it includes:

the main silencing pipe is communicated with the ventilation channel and is positioned on an airflow flow path of the ventilation channel;

the wavelength tube assembly comprises a plurality of 1/4 wave tubes, a plurality of 1/4 wave tubes are different in length, and a plurality of 1/4 wave tubes are arranged on the outer wall of the main silencing tube and are communicated with the main silencing tube.

In some embodiments of the present application, the ventilation channel includes an air inlet air supply channel and an air outlet air exhaust channel, and the silencing device is at least disposed on the air inlet air supply channel or one of the air outlet air exhaust channels.

In some embodiments of this application, new trend air conditioner is still including the air diffuser, be provided with the air outlet on the air inlet air supply passageway, silencing device sets up air inlet air supply passageway air outlet department, main hush pipe one end with the air outlet is connected, the other end with the air diffuser is connected.

In some embodiments of the present application, the silencing device is disposed on the air inlet and supply channel, the air inlet and supply channel includes a first air supply channel and a second air supply channel, one end of the main silencing pipe is communicated with the first air supply channel, and the other end of the main silencing pipe is communicated with the second air supply channel.

In some embodiments of the present application, an air inlet is disposed on the air outlet/exhaust channel, the silencer is disposed at the air inlet of the air outlet/exhaust channel, one end of the main silencing pipe is connected to the air inlet, and the other end of the main silencing pipe faces the indoor space.

In some embodiments of the present application, the silencer is disposed on the air-out and air-exhausting channel, the air-out and air-exhausting channel includes a first air-exhausting channel and a second air-exhausting channel, one end of the main silencing pipe is communicated with the first air-exhausting channel, and the other end of the main silencing pipe is communicated with the second air-exhausting channel.

In some embodiments of the present application, the 1/4 wave tubes are made of flexible materials, one end of the 1/4 wave tube is communicated with the main muffling tube, and one end of the 1/4 wave tube is provided with a rigid plug.

In some embodiments of the present application, the rigid plug is a plastic, wood, or metal member.

In some embodiments of the present application, the main muffling tube is a flexible tube, a plurality of 1/4 wave-length tubes are sequentially arranged along the length direction of the main muffling tube, and the distance between adjacent 2 1/4 wave-length tubes is at least greater than the length of the longer tube of the 2 1/4 wave-length tubes.

In some embodiments of the present application, the plurality of 1/4 wave tubes vary in diameter.

The technical scheme of the utility model prior art relatively has following technological effect:

the utility model discloses in the new trend air conditioner that provides, be provided with silencing device on ventilation channel, and silencing device is by the 1/4 wavelength pipe cooperation of main hush pipe and a plurality of different length, the length of the 1/4 wavelength pipe of a plurality of different lengths can set up according to the well low frequency wide band noise value of gathering, 1/4 wavelength pipe through a plurality of different lengths can realize eliminating the noise of different frequency channels, and then realized effectively eliminating of well low frequency wide band noise, make the noise value greatly reduced of whole new trend air conditioner.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a silencer of a fresh air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of a silencer of a fresh air conditioner according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a main muffler of the fresh air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the silencer of the fresh air conditioner of the embodiment of the present invention disposed at the air outlet of the air inlet/supply channel;

FIG. 5 is a schematic view of the structure of the silencer of the fresh air conditioner of the embodiment of the present invention disposed on the air intake and supply channel;

fig. 6 is a schematic structural view of the silencer of the fresh air conditioner of the embodiment of the present invention disposed at the air inlet of the air outlet and exhaust passage;

fig. 7 is the embodiment of the utility model provides an in the embodiment of the utility model provides a silencer of new trend air conditioner sets up the schematic structure on air-out exhaust passage.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Example one

The utility model provides a fresh air conditioner, it all includes new trend device 100, in some embodiments, new trend device 100 including: fresh air heat exchanger and filter screen.

The ventilation channel is communicated with the fresh air device 100 and is used for realizing the transmission between indoor and outdoor airflow and the fresh air device 100;

in some embodiments of the present application, the ventilation channels include an air inlet air supply channel 310 and an air outlet air exhaust channel 320, the air inlet air supply channel 310 is used for inputting outdoor air flow into the fresh air device 100, so that the outdoor air flow passes through the fresh air heat exchanger, and then the outdoor air flow is conveyed from the fresh air device 100 into the indoor space;

and the air outlet and exhaust channel 320 is communicated with the fresh air device 100 and is used for conveying the indoor air flow to the external space after passing through the filter screen.

The silencer 200 is at least disposed on one of the air inlet air supply channel 310 or the air outlet air exhaust channel 320.

That is to say, to reduce the noise value of the whole fresh air conditioner, the silencer 200 in this embodiment may be disposed on the air inlet air supply channel 310 or the air outlet air exhaust channel 320 during the setting, and preferably, the silencer 200 is disposed on both the air inlet air supply channel 310 and the air outlet air exhaust channel 320, so as to achieve better silencing and noise reduction effects.

Specifically, the silencer 200 includes:

and the main silencing pipe 210 is communicated with the ventilation channel and is positioned on an airflow flow path of the ventilation channel, so that the airflow flowing in the ventilation channel can flow through the main silencing pipe 210 in the silencing device 200, and the noise can be eliminated through the silencing device 200.

The wavelength tube assembly comprises a plurality of 1/4 wave tubes 220, wherein the lengths of the plurality of 1/4 wave tubes 220 are different, and a plurality of 1/4 wave tubes 220 are arranged on the outer wall of the main silencing tube 210 and are communicated with the main silencing tube 210.

The plurality of 1/4 wave-length tubes 220 may be arranged as bent tubes or as straight tubes arranged perpendicular to the wall of the main silencer duct 210.

Specifically, a plurality of through holes 211 may be formed in the main sound-deadening tube 210 for connecting the 1/4 wave-length tube 220 with the main sound-deadening tube 210, so that the connected main sound-deadening tube 210 is communicated with the 1/4 wave-length tube 220.

Since there may be differences in noise energy main frequency between different pipe lengths and installation manners, the main muffling tube 210 is provided with a plurality of through holes 211, and sometimes these through holes 211 are not necessarily used all together, so that the through holes 211 that are not connected to the 1/4 wave tube 220 can be plugged by the rigid plugs 221.

Specifically, the sound attenuating device 200 of the present embodiment mainly utilizes the sound attenuating principle of the 1/4 wave tube 220, the 1/4 wave tube 220 is a closed tube installed on the main pipe, when sound waves enter the 1/4 wave tube 220 from the main sound attenuating tube 210, the sound waves are reflected back to the main sound attenuating tube 210 by the closed end, and reflected waves of certain frequencies are opposite in phase to incident waves of the same frequency in the main sound attenuating tube 210 and are offset with each other, so as to achieve the sound attenuating purpose.

Muffler insertion loss:

in the formula, TL-transmission loss (dB)

L-1/4 wave tube 220 length (m);

m is the ratio of the sectional area of the wavelength tube to the sectional area of the main pipeline;

lambda-wavelength (m)

When the length of the wavelength tube is:

the transmission loss is greatest when the bypass branch has a length that is an odd multiple of λ/4. There are two parameters affecting the transmission loss of the 1/4 wave tube 220, one is the ratio m of the sectional area of the wave tube to the sectional area of the main pipe, and the other is the length L of the wave tube.

The larger the cross-sectional area ratio is, the larger the amplitude of the transmission loss is, and the wider the sound attenuation bandwidth is, that is, when the diameter of the 1/4 wave tube 220 is larger, the noise reduction amount is large, the noise reduction amplitude is large, and the noise reduction effect is good.

The length and size of the 1/4 wave tube 220 are determined by the sound waves with different frequencies, and the corresponding 1/4 wave tube 220 with different lengths can eliminate different noise frequency bands, and generally, the 1/4 wave tube 220 has a noise reduction effect only on single-frequency or narrow-band noise.

In this embodiment, a plurality of 1/4 wave tubes 220 with different lengths are provided to achieve continuous broadband noise suppression.

Specifically, when the 1/4 wave tube 220 is set to a length, the required length of the 1/4 wave tube can be calculated correspondingly according to the collected noise values of the medium and low frequency bands, and the noise of the plurality of different frequency bands is eliminated correspondingly by setting the 1/4 wave tubes 220 with different lengths, so that the silencing of the medium and low frequency broadband noise can be met, and a good noise reduction effect can be achieved.

In some embodiments of the present application, the plurality of 1/4 wave tubes 220 are made of flexible material, such as rubber, to be suitable for small-sized installation. The rubber tube can realize compression and rebound after compression, so that small-space installation can be realized.

One end of the 1/4 wave-tube 220 is communicated with the main silencing tube 210, and one end is provided with a rigid plug 221.

The rigid plug 221 is used to plug one end of the 1/4 wave tube 220, and since the 1/4 wave tube 220 acts by the superposition principle of reflected sound waves and incident waves, the rigid plug 221 is adopted in this embodiment, and the rigid plug 221 may be a plastic, wooden, or metal member.

In some embodiments of the present application, the fresh air conditioner further includes an air diffuser, an air outlet 311 is disposed on the air inlet channel 310, the silencer 200 is disposed at the air outlet 311 of the air inlet channel 310, one end of the main silencing tube 210 is connected to the air outlet 321, and the other end of the main silencing tube is connected to the air diffuser.

When setting up in air outlet 311 department, can accomplish the back at whole new trend air conditioner furred ceiling, with air inlet air supply channel 310 pull out install can, can satisfy the small-size installation demand that the furred ceiling was accomplished under the back condition.

The installation mode is as follows:

collecting and analyzing the noise of the pipeline, determining the main energy frequency band of the noise, and calculating the lengths of a plurality of 1/4 wave tubes 220 corresponding to the noise of a plurality of different frequency bands;

at the home of a user, the air diffuser is detached, and the suspended ceiling preformed hole and the end hose of the air inlet and supply channel 310 are exposed;

the hose is pulled out of the ceiling and connected with one end of a main silencing pipe 210 of the silencing device;

then, a plurality of 1/4 wave tubes 220 are plugged into the ceiling through the reserved holes of the ceiling, and the rubber tubes are extruded during plugging, so that the installation can be realized under the limitation of small size;

and then the main silencing pipe 210 is placed in the suspended ceiling, the other end of the main silencing pipe is connected with the air diffuser, and finally the air diffuser is installed back.

In some embodiments of the present application, the silencer device 200 is disposed on the air supply passage 310, the air supply passage 310 includes a first air supply passage and a second air supply passage, and one end of the main silencer duct 210 communicates with the first air supply passage and the other end communicates with the second air supply passage.

Specifically, the silencer 200 may be disposed at 1/3 of the air outlet/exhaust channel 320, or at the middle of the air outlet/exhaust channel 320, and when the silencer 200 is not disposed at the air outlet 321, the silencer and the fresh air fan may be assembled inside the ceiling together.

In some embodiments of the present application, an air inlet 321 is disposed on the air outlet/exhaust channel 320, the silencer 200 is disposed at the air inlet 321 of the air outlet/exhaust channel 320, one end of the main silencing tube 210 is connected to the air inlet 321, and the other end faces the indoor space.

When setting up in income wind gap 321 department, can accomplish the back at whole new trend air conditioner furred ceiling, with the air-out 320 pull play of air exhaust air channel install can, can satisfy the small-size installation demand that the furred ceiling was accomplished under the back condition.

In some embodiments of the present application, the silencer device 200 is disposed on the air outlet/exhaust channel 320, the air outlet/exhaust channel 320 includes a first air exhaust channel and a second air exhaust channel, and one end of the main silencer duct 210 is communicated with the first air exhaust channel, and the other end of the main silencer duct is communicated with the second air exhaust channel.

Specifically, the silencer 200 may be disposed at 1/3 of the air-out and exhausting channel 320, or at the middle of the air-out and exhausting channel 320, and when the silencer 200 is not disposed at the air inlet 321, the silencer and the fresh air fan may be assembled inside the ceiling together.

In some embodiments of the present application, to further enhance the noise reduction effect, when disposed, the 1/4 wave tubes 220 are sequentially arranged along the length direction of the main sound-deadening tube 210, and the distance between the adjacent 2 1/4 wave tubes 220 is at least greater than the length of the longer tube of the 2 1/4 wave tubes 220.

That is, in the embodiment, the distance between the adjacent 2 1/4 wave tubes 220 can be changed to achieve a good noise reduction effect, the larger the distance between the 2 1/4 wave tubes 220 is, the better the noise reduction effect is,

therefore, the main muffling pipe 210 can be set to be a flexible pipe during setting, and if the main muffling pipe 210 is set to be a rubber pipe, the main muffling pipe 210 can be compressed to generate flexible deformation to meet the installation requirements of different installation spaces even if the length of the main muffling pipe 210 is long, and noise reduction is realized on the premise that the main muffling pipe 210 can be installed without being limited by the installation space.

In some embodiments of the present application, the diameters of the 1/4 wave tubes 220 are different, and since the 1/4 wave tubes 220 with different diameters have different noise reduction ranges, the 1/4 wave tubes 220 with noise reduction for different frequency bands can be set to different diameter values as required to increase the noise reduction range.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A fresh air conditioner, comprising: a fresh air device;

The ventilation channel is communicated with the fresh air device, and is used for inputting the outdoor air flowing through the fresh air device into the room, and outputting the indoor air flowing through the fresh air device to the outdoor;

Muffler device, which includes:

a main muffler pipe, the main muffler pipe communicates with the ventilation channel and is located on the airflow flow path of the ventilation channel;

The wavelength tube assembly includes a plurality of 1/4 wavelength tubes, the lengths of the plurality of 1/4 wavelength tubes are different, and the plurality of 1/4 wavelength tubes are arranged on the outer wall of the main muffler pipe and communicate with the main muffler pipe .

2. fresh air air conditioner according to claim 1, is characterized in that:

The ventilation channel includes an air inlet and air supply channel and an air outlet and exhaust channel, and the muffler device is arranged at least on the air inlet and air supply channel or on one of the air outlet and exhaust channels.

3 . The fresh air air conditioner according to claim 2 , further comprising a diffuser, an air outlet is arranged on the air inlet and air supply channel, and the noise reduction device is arranged in the air inlet air supply channel. 4 . At the air outlet, one end of the main muffler pipe is connected to the air outlet, and the other end is connected to the diffuser.

4 . The fresh air air conditioner according to claim 2 , wherein the noise reduction device is arranged on the air inlet and air supply channel, and the air inlet air supply channel comprises a first air supply channel and a second air supply channel. 5 . One end of the main muffler pipe is communicated with the first air supply channel, and the other end is communicated with the second air supply channel.

5 . The fresh air air conditioner according to claim 2 , wherein an air inlet is arranged on the air outlet and exhaust passage, and the noise reduction device is arranged at the air inlet of the air outlet and exhaust passage. 6 . One end of the main muffler pipe is connected to the air inlet, and the other end faces the indoor space.

6 . The fresh air air conditioner according to claim 2 , wherein the noise reduction device is arranged on the air outlet and exhaust channel, and the air outlet and exhaust channel comprises a first exhaust channel and a second exhaust channel. 7 . A channel, one end of the main muffler pipe is communicated with the first exhaust channel, and the other end is communicated with the second exhaust channel.

7. The fresh air air conditioner according to any one of claims 3-6, characterized in that: a plurality of 1/4 wavelength tubes are made of flexible parts, and one end of the 1/4 wavelength tubes is communicated with the main muffler tube, One end is provided with a rigid plug.

8 . The fresh air conditioner according to claim 7 , wherein the rigid plug is a plastic part, a wooden part or a metal part. 9 .

9 . The fresh air air conditioner according to claim 3 , wherein the main muffler pipe is a flexible pipe, and a plurality of the 1/4 wavelength pipes are arranged in sequence along the length direction of the main muffler pipe. 10 . arranged, and the distance between two adjacent 1/4 wavelength tubes is at least greater than the length of the longer tube among the two 1/4 wavelength tubes.

10 . The fresh air conditioner according to claim 3 , wherein the diameters of the plurality of 1/4 wavelength tubes are different. 11 .