CN209637603U

CN209637603U - A kind of reverberation chamber for household appliances detection

Info

Publication number: CN209637603U
Application number: CN201821759905.7U
Authority: CN
Inventors: 刘志恒; 杨君; 黄曦鸣
Original assignee: China National Electric Apparatus Research Institute Co Ltd
Current assignee: China National Electric Apparatus Research Institute Co Ltd
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2019-11-15
Anticipated expiration: 2028-10-29

Abstract

The utility model discloses a kind of reverberation chambers for household appliances detection, including room body, soundproof door and multiple sound reflectors, the wall of the room body includes exterior wall and inner wall, sound insulation chamber is constituted between the exterior wall and the inner wall, the intracavitary sound insulation by filling cotton of sound insulation, the sound reflectors are mounted on the interior wall and ceiling of the room body, the soundproof door includes the doorframe and the door leaf hinged with the doorframe being embedded on the room body door opening, the left side of the door leaf, right side and upside are equipped with step edge, stepped groove corresponding with the step edge is provided on the doorframe, the surface of the step edge and the stepped groove is pasted with sealant.The utility model can anti-leak-stopping sound and external noise interference, to improve the accuracy of noise of equipment fatigue detecting.

Description

A kind of reverberation chamber for household appliances detection

Technical field

The utility model relates to the technical fields of reverberation chamber, more particularly to a kind of reverberation for household appliances detection Room.

Background technique

Reverberation chamber is a kind of specialized laboratory of acoustic measurement research field, both at home and abroad detecting for household appliances The necessary experiment condition of material sound absorbing performance measurement identification when reverberation chamber is as sound wave random incidence, meanwhile, it is used for household appliances The reverberation chamber of detection can also be used to carry out the acoustic power level measuring study of sound source, and in sound absorption performance, the sensitive device of air Noise fatigue degree and radio technology in be applied.To meet Product scientific researching needs, nowadays acoustic reverberation laboratory has been One of checkout facility as household electrical appliances manufacturer indispensability.

Reverberation chamber currently used for household appliances detection uses general soundproof door, and crack between a door and its frame is excessive, causes to leak Sound, detection test is by extraneous sound interference, in addition, can generally be equipped with sound reflectors in reverberation chamber, sound reflectors are all phases Same size, and regular arrangement can simultaneously enable the full and uniform expansion of sound although sound can be enable to produce sound reflecting and dissipated It dissipates, and raw reflector itself can also generate resonance, draw a large amount of sound energy.

Utility model content

The purpose of the utility model is to provide a kind of reverberation chambers for household appliances detection, which being capable of anti-leak-stopping Sound and external noise interference, to improve the accuracy of noise of equipment fatigue detecting.

The purpose of this utility model is realized by technical solution below:

A kind of reverberation chamber for household appliances detection, including room body, soundproof door and multiple sound reflectors, the room body Wall include exterior wall and inner wall, sound insulation chamber is constituted between the exterior wall and the inner wall, the sound insulation is intracavitary to fill out Sound-proof material is filled, the sound reflectors are mounted on the interior wall and ceiling of the room body, which is characterized in that the soundproof door includes The doorframe and the door leaf hinged with the doorframe being embedded on the room body door opening, the left side of the door leaf, right side and on Side is equipped with step edge, and stepped groove corresponding with the step edge, the step edge and the stepped groove are provided on the doorframe Surface be pasted with sealant.

Based on the above technical solution, the utility model can do following improvement:

Hollow cavity is equipped in door leaf described in the utility model, the cavity is built-in, and there are two door bolt, two door bolts It stretches out the side of the door leaf straight up and straight down respectively, door bolt corresponding with the door bolt is provided on the doorframe Hole, the door bolt hole are connected to the door bolt hole being arranged on the room body door opening, so as to compress door leaf, prevent soundproof door from sending out It gives birth to resonance and absorbs a large amount of sound energy.

Gear-box is additionally provided in door leaf described in the utility model, the gear-box is connect with the door bolt, the gear-box On spinner handle is installed, described spinner handle one end spinner handle extends perpendicularly out the outer surface of the door leaf, and fills in the extension end of the spinner handle There is disk handle, the other end is connect with the gear set installed in the gear-box, so as to further compress soundproof door.

The bottom of door leaf described in the utility model is equipped with tweed, the tweed for block the door leaf and ground it Between gap, to improve the sound insulation value of reverberation chamber.

Sound reflectors described in the utility model include taper sound reflectors and hemispherical sound reflectors, so as to effectively press down The indoor standing wave of reverberation processed improves sound dffusion effect.

The radius of hemispherical sound reflectors described in the utility model is different, and is randomly distributed in the day of the room body On card；The taper sound reflectors size is all the same, and the taper sound reflectors are distributed parallelly on the inner wall of the room body On, and the two adjacent taper sound reflectors turn upside down arrangement, so as to avoid sound reflectors that resonance occurs and absorbed More sound energy.

The ground of room body described in the utility model is floating floor, and the floating floor includes successively bedding from lower to upper Floor, block of glass wool, armoured concrete slab, timber floor and bayeta, so as to further increase the sound-proofing of reverberation chamber Can, and prevent ground from generating resonance.

Compared with prior art, the utility model technology has the advantage that

(1) door leaf of reverberation chamber described in the utility model has step edge, also is provided on doorframe corresponding with step edge Stepped groove is pasted with sealant on stepped groove, can obviously obstruct the interference of external noise and prevent reverberation chamber from leaking sound, to mention High reverberation chamber carries out the accuracy of noise of equipment fatigue detecting；

(2) the random hemispherical sound reflecting for being equipped with different radii on the ceiling of reverberation chamber described in the utility model Body is equipped with half cone-shaped sound reflectors on inner wall, is not only able to avoid resonating, and can enable the random expansion of sound It is dispersed in reverberation chamber.

Detailed description of the invention

The utility model is described in further details in the following with reference to the drawings and specific embodiments

Fig. 1 is the overlooking structure diagram of reverberation chamber described in the utility model；

Fig. 2 is the soundproof door overlooking structure diagram of reverberation chamber described in the utility model；

Fig. 3 is the soundproof door schematic view of facade structure of reverberation chamber described in the utility model；

Fig. 4 is the schematic view of facade structure of reverberation chamber described in the utility model；

Fig. 5 is partial enlargement diagram at the floating floor A of reverberation chamber described in the utility model；

Label on attached drawing: 1- room body, 2- soundproof door, 21- doorframe, 22- door leaf, 3- sound reflectors, 31- half-conical ideophone Reflector, 32- hemispherical sound reflectors, 4- sealant, 5- door bolt, 6- gear-box, 7- disk handle, 8- tweed, 9- are floating to be built Ground, 91- floor 92- block of glass wool, 93- armoured concrete slab, 94- timber floor, 95- bayeta.

Specific embodiment

Such as Fig. 1~2, a kind of reverberation chamber for household appliances detection of the present embodiment, including room body 1, soundproof door 2 and Multiple sound reflectors 3, the wall of room body 1 include exterior wall and inner wall, and exterior wall is the brick of 24cmn thickness in the present embodiment Wall, exterior wall surface plastering, inner wall are the concrete panel of 20cm thickness, and inner wall surface is brushed with enamel paint；Exterior wall with it is interior Sound insulation chamber, the intracavitary sound insulation by filling cotton of sound insulation are constituted between wall, sound reflectors 4 are mounted on the interior wall and ceiling of room body, every Sound door 2 includes the doorframe 21 and the door leaf 22 hinged with doorframe 21 that are embedded on room body door opening, the left side of door leaf 22, right side with And upside is equipped with step edge, is provided with stepped groove corresponding with step edge on doorframe 21, the surface of step edge and stepped groove is viscous Sealant 4 is posted, therefore, the reverberation chamber in the present embodiment can obstruct the interference of external noise and prevent from examining for household appliances The reverberation chamber of survey leaks sound, to improve the accuracy that reverberation chamber carries out noise of equipment fatigue detecting.

Hollow cavity is equipped in door leaf 22 in the present embodiment, cavity is built-in there are two door bolt 5, and two door bolts 5 erect respectively The straight side for stretching out door leaf 22 upwards and straight down is provided with door bolt corresponding with door bolt 5 hole, door bolt hole and setting on doorframe 21 Door bolt hole connection on 1 door opening of room body prevents soundproof door from resonance occurs and absorbs a large amount of sound so as to compress door leaf Energy.

Such as Fig. 3, it is additionally provided with gear-box 6 in the door leaf 22 in the present embodiment, gear-box 6 is connect with door bolt 5, on gear-box 6 Spinner handle is installed, spinner handle one end spinner handle extends perpendicularly out the outer surface of door leaf, and disk handle 7 is housed in the extension end of spinner handle, separately One end is connect with the gear set in installation gear-box 6, so as to further compress soundproof door；The bottom of door leaf 22 is equipped with lint Cloth 8, tweed 8 is used to block the gap between the door leaf and ground, to improve the sound insulation value of reverberation chamber.

Such as Fig. 4, the reflector 3 in the present embodiment includes taper sound reflectors 31 and hemispherical sound reflectors 32, so as to Enough indoor standing waves of reverberation effectively inhibited for household appliances detection, improve sound dffusion effect；Hemispherical sound reflectors 32 Radius it is different, and be randomly distributed on the ceiling of room body 1；31 size of taper sound reflectors is all the same, taper sound Reflector 31 is distributed parallelly on the inner wall of room body 1, and two adjacent conical sound reflectors 31 turn upside down arrangement, so as to It avoids sound reflectors that resonance occurs and absorbs excessive sound energy.

Such as Fig. 5, the ground of the room body in the present embodiment is floating floor 9, and floating floor 9 includes successively bedding from lower to upper Floor 91, block of glass wool 92, armoured concrete slab 93, timber floor 94 and bayeta 95, it is mixed so as to further increase The sound insulation value of room is rung, and prevents ground from generating resonance.

The above embodiments of the present invention is not the restriction to scope of protection of the utility model, the reality of the utility model It is without being limited thereto to apply mode, all this kind above content according to the present utility model, according to the ordinary technical knowledge of this field and used With means, under the premise of not departing from the utility model above-mentioned basic fundamental thought, the utility model above structure is made its The modification, replacement or change of its diversified forms, shall fall within the scope of the present invention.

Claims

1. a kind of reverberation chamber for household appliances detection, including room body, soundproof door and multiple sound reflectors, the room body Wall includes exterior wall and inner wall, and sound insulation chamber, the intracavitary filling of sound insulation are constituted between the exterior wall and the inner wall Sound-proof material, the sound reflectors are mounted on the interior wall and ceiling of the room body, which is characterized in that the soundproof door includes edge Doorframe and the door leaf hinged with the doorframe on the room body door opening, left side, right side and the upside of the door leaf It is equipped with step edge, is provided with stepped groove corresponding with the step edge on the doorframe, the step edge and the stepped groove Surface is pasted with sealant.

2. the reverberation chamber according to claim 1 for household appliances detection, which is characterized in that in being equipped in the door leaf Cavity body, the cavity is built-in there are two door bolt, and two door bolts stretch out the door leaf straight up and straight down respectively Side, be provided with door bolt corresponding with door bolt hole on the doorframe, the door bolt hole and be arranged on the room body door opening Door bolt hole connection.

3. the reverberation chamber according to claim 2 for household appliances detection, which is characterized in that be additionally provided in the door leaf Gear-box, the gear-box are connect with the door bolt, and spinner handle is equipped on the gear-box, and described spinner handle one end spinner handle is vertically stretched The outer surface of the door leaf out, and disk handle is housed in the extension end of the spinner handle, the other end and is installed in the gear-box Gear set connection.

4. the reverberation chamber according to claim 3 for household appliances detection, which is characterized in that the bottom of the door leaf is set There is tweed, the tweed is used to block the gap between the door leaf and ground.

5. the reverberation chamber described in any one of -4 claims for household appliances detection according to claim 1, which is characterized in that The sound reflectors include half cone-shaped sound reflectors and hemispherical sound reflectors.

6. the reverberation chamber according to claim 5 for household appliances detection, which is characterized in that the hemispherical sound reflecting The radius of body is different, and is randomly distributed on the ceiling of the room body；The taper sound reflectors size is all the same, The taper sound reflectors are distributed parallelly on the inner wall of the room body, and the two adjacent taper sound reflectors turn upside down Arrangement.

7. the reverberation chamber according to claim 6 for household appliances detection, which is characterized in that the ground of the room body is Floating floor, the floating floor include the successively floor of bedding, block of glass wool, armoured concrete slab, timber floor from lower to upper And bayeta.