CN202352330U - Double-layer intelligent sound-insulating cover with controllable sound-insulating amount and internal temperature - Google Patents

Abstract

The utility model discloses a double-layer intelligent sound-insulating cover with controllable sound-insulating amount and internal temperature. The double-layer intelligent sound-insulating cover comprises a sound-insulating cover, wherein a sound-insulating door is arranged on the sound-insulating cover; a sound sensor is disposed outside the sound-insulating over; the sound-insulating cover comprises a sound-absorbing heat dissipation chamber and a vacuum sound-insulating chamber which are internally and externally nested; both of the sound-absorbing heat dissipation chamber and the vacuum sound-insulating chamber are communicated with an air intake device and an air exhaust device; a temperature sensor is arranged in the sound-absorbing heat dissipation chamber; and the air intake device, the air exhaust device, the sound sensor and the temperature sensor are connected with a control device outside the sound-insulating cover. The utility model discloses a novel double-layer intelligent sound-insulating cover nesting a sound-absorbing heat dissipation chamber in a vacuum sound-insulating chamber by combining the sound-insulating principle of a double-layer wall with a vacuum sound-insulating theory; and controllable sound-insulating amount and internal temperature are realized, so that the requirements of users with different sound sources can be met. The sound-insulating amount of the sound-insulating cover can be intelligently controlled, good sound insulation can be performed on noise sources with different frequency ranges, and the problems of ventilation and heat dissipation in the sound-insulating cover are solved simultaneously; and the sound-insulating cover has the advantages of being humanized and intelligentized.

Description

The double-deck intelligent acoustic hood that oise insulation factor and internal temperature are controlled

Technical field

The utility model relates to a kind of sound insulation equipment, and the double-deck intelligent acoustic hood that especially a kind of oise insulation factor and internal temperature are controlled belongs to vibration and noise control field.

Background technology

Present most of commercial unit in use all can produce serious noise pollution; Like the large-scale gas compressing equipment of forming by motor, shaft coupling, speed reduction unit, compressor etc.; Through the test its noise have up to 100～120dB (A); Considerably beyond the requirement of the relevant criterion for noise control 85-95dB (A) of country, this not only jeopardizes operator's physical and mental health, and causes severe noise to pollute to surrounding environment.Therefore, the noise of reduction equipment is one of problem of at present domestic and international field of noise control primary study.One Chinese patent application: the acoustic hood of intelligent control " oise insulation factor can " (application number 200810165908.2) realized the intellectuality control to each frequency range noise oise insulation factor, satisfies that heat radiation is required the not sound insulation of strict equipment, but still has with deficiency:

1) can cause equipment ventilation and heat difficulty after quilt is vacuumized in the acoustic hood; Case temperature is too high, and not only hindering has the equipment of requirement normally to move to heat radiation, and the on-site maintenance personnel in getting into cover before; Must recover the acoustic hood inner air pressure earlier, could carry out the maintenance task then.

2) for the bigger acoustic hood of volume, centrifugal fan needs the long period with the vacuum tightness that air in the acoustic hood is extracted into the control requirement, inefficiency, and consumed energy is big.

The utility model content

The purpose of the utility model is for overcoming the deficiency of above-mentioned prior art; Provide a kind of oise insulation factor and internal temperature controlled double-deck intelligent acoustic hood; This acoustic hood can be controlled and can satisfy the heat radiation requirement the oise insulation factor size, can also satisfy the requirement of different frequency range noise source user, particularly the low-frequency noise source; And solved the ventilation and heat problem in the acoustic hood simultaneously, have hommization, intelligentized advantage.

For realizing above-mentioned purpose, the utility model adopts following technical proposals:

The double-deck intelligent acoustic hood that a kind of oise insulation factor and internal temperature are controlled comprises acoustic hood, and acoustic hood is provided with soundproof door; The acoustic hood outside is provided with sonic transducer; Inside and outside said double acoustic cover comprises between nested sound absorption heat radiation with the vacuum acoustic booth, between said sound absorption heat radiation, all be connected with air-intake device and air exhausting device with the vacuum acoustic booth, be provided with temperature sensor between said sound absorption is dispelled the heat; Said air-intake device, air exhausting device, sonic transducer and temperature sensor all link to each other with the outside control device of acoustic hood; And during noise source just was installed between the sound absorption heat radiation, said vacuum acoustic booth was wanted good seal, and vacuum tightness is controlled.

Between the top between said sound absorption heat radiation and the top of vacuum acoustic booth certain interval is arranged.

The top between said sound absorption heat radiation and the shared sound insulationg board in top of vacuum acoustic booth.

Said air-intake device comprises air-intake device and vacuum acoustic booth air-intake device between the sound absorption heat radiation; Air-intake device comprises the sound absorption heat radiation air inlet sound suppressor on the body of wall that is arranged between the sound absorption heat radiation between said sound absorption heat radiation; Sound absorption heat radiation air inlet sound suppressor bottom is provided with air inlet sound suppressor bracing frame between the sound absorption heat radiation, and the air inlet front portion of sound absorption heat radiation air inlet sound suppressor is provided with air cleaner;

Said vacuum acoustic booth air-intake device comprises the vacuum acoustic booth air inlet sound suppressor that is arranged on the outer body of wall of vacuum acoustic booth; Be provided with vacuum acoustic booth air inlet sound suppressor bracing frame in vacuum acoustic booth air inlet sound suppressor bottom; The air inlet front portion of vacuum acoustic booth air inlet sound suppressor is provided with the rolling screen door of favorable sealing property, and rolling screen door links to each other with servo or stepper motor through gear train.

The exhaust outlet of its corresponding air exhausting device of air inlet of said sound absorption heat radiation air inlet sound suppressor is diagonal line and distributes.

The exhaust outlet of its corresponding air exhausting device of air inlet of said vacuum acoustic booth air inlet sound suppressor also is diagonal line and distributes.

Air exhausting device with the vacuum acoustic booth between said sound absorption heat radiation all adopts the centrifugal exhaust blower of low noise; Be installed on the ground of acoustic hood, one of its corresponding air inlet terminates on the inner top of acoustic hood, and communicates with the vacuum acoustic booth respectively with between the sound absorption heat radiation; The air inlet of the other end and the centrifugal exhaust blower of low noise joins; The outlet of the centrifugal exhaust blower of low noise is connected on the air inlet of exhaust duct, and the outlet of exhaust duct is led to the outside of factory building through total air escape pipe, with atmosphere.

Utility model principle: regard the sound source in the acoustic hood as a pulsation ball source, handle, ignore the reflection of sound wave, can know that by the mechanism of transmission of sound wave the acoustic pressure of any point is in the acoustic hood owing to done sound absorption in the acoustic hood:

$p=\frac{{\mathrm{\&rho;}}_0{c}_{0}k{r}_0^2{u}_a}{\mathrm{<figure-callout\; id="1"\; label="r"\; filenames="HDA0000120059780000011.png"\; state="\{\{state\}\}">r</figure-callout>}\sqrt{1+{\left(k{r}_0\right)}^2}}{e}^{j(\mathrm{\&omega;t}-\mathrm{kr}+\mathrm{\&theta;})}---\left(1\right)$

Here r ₀And u _aBe respectively the radius in pulsation ball source and the vibration velocity on surface; ρ ₀And c ₀It is the velocity of propagation of the density harmony of medium; K and r are respectively the distances that any point arrives pulsation center, ball source in wave number and the acoustic hood; ω and θ are respectively sound source vibration frequency and initial phase.For ideal gas, the acoustic pressure of ignoring the sound wave generation is to medium pressure and density influence, and the numerical value the when velocity of sound is made even the weighing apparatus state has:

$c_0^2=\frac{\mathrm{\&gamma;}{P}_0}{{\mathrm{\&rho;}}_0}---\left(2\right)$

Wherein: γ is the adiabatic exponent of ideal gas adiabatic process, P ₀And ρ ₀The pressure of gas and density when being equilibrium state.Bringing formula (2) into formula (1) has:

$p=\frac{\sqrt{\mathrm{\&gamma;}{\mathrm{\&rho;}}_0{P}_0}{r}_0^2{u}_a}{r\sqrt{{(1/k)}^2+{\left(r_0\right)}^2}}{e}^{j(\mathrm{\&omega;t}-\mathrm{kr}+\mathrm{\&theta;})}---\left(3\right)$

Relation according to wave number, frequency and the velocity of sound:

$k=\frac{\mathrm{\&omega;}}{c_0}---\left(4\right)$

In general, the volume of acoustic hood is changeless, by carat Bai Long gas equation, and the pressure P in the acoustic hood ₀With gas density ρ ₀Relation is:

${\mathrm{\&rho;}}_0=\frac{P_0\mathrm{\&mu;}}{{\mathrm{RT}}_0}---\left(5\right)$

Here μ, R and T ₀Be respectively the absolute temperature in gas molal weight, gas mole constant and the acoustic hood.Bring formula (2), (4), (5) into formula (3), have through arrangement:

$p=\frac{P_0\sqrt{\mathrm{\&gamma;\&mu;}}{r}_0^2{u}_a}{r{\mathrm{RT}}_0\sqrt{[\mathrm{\&gamma;}/\left({\mathrm{\&omega;}}^2\mathrm{\&mu;}\right)+{r_0}^2/\left({\mathrm{RT}}_0\right)]}}{e}^{j(\mathrm{\&omega;t}-\mathrm{kr}+\mathrm{\&theta;})}---\left(6\right)$

Can know that by formula (6) acoustic pressure of any point and the pressure of medium are approximated to direct ratio in the acoustic hood.

Based on above-mentioned theory, the utility model combines the soundproof theory of double wall on the basis of traditional sound insulating method with the vacuum sound insulating theory; Proposition is nested with a kind of novel double-layer intelligence acoustic hood between the sound absorption heat radiation at the vacuum acoustic booth, through one group of controlled blower fan of intelligence air in the vacuum acoustic booth is discharged, and reaches the purpose that changes the acoustic hood oise insulation factor thereby form certain vacuum tightness; Another group blower fan is used for controlling the temperature in the acoustic hood, thus the normal ventilation and heat of the equipment of assurance, and utilize computing machine or PLC logic control; Data acquisition; Show, report to the police functions such as communication; Realization is monitored and is controlled the oise insulation factor and the temperature of equipment such as sound source such as compressor, designs the controlled double-deck intelligent acoustic hood of oise insulation factor and internal temperature.

The utility model has solved the problem of following two aspects:

1) oise insulation factor of acoustic hood can intelligent be controlled, and is fit to the noise source of various frequency ranges.When the radiated noise of equipment such as compressor surpasses control target (this desired value often is lower than national standard and requires); Or, load waits other mechanical reason because of increasing; The noise of sound source radiation will change, and the sonic transducer that the utility model is externally installed just can detect the actual value of the acoustic pressure or the sound intensity, with the input as control system of the difference of sonic transducer measured value and control target; Through carrying out power amplification after relatively with the controlled target amount; Pass through shaft coupling and speed reduction unit by interchange or DC servo motor (requiring also available step motor according to control), the rolling screen door with good seal performance that drive is loaded on vacuum acoustic booth air inlet moves up and down, thus the size of control intake; Make the vacuum acoustic booth form vacuum state in various degree, reach the requirement of oise insulation factor Based Intelligent Control.

2) internal temperature of acoustic hood Monitoring and Controlling in real time when temperature surpasses setting value, starts the blower fan air draft between acoustooptic alarm system and sound absorption heat radiation through computing machine (or PLC controller), thereby avoids the too high equipment operation that influences of temperature.The startup of blower fan between the sound and light alarm of double-deck intelligent acoustic hood and sound absorption heat radiation, stop control and be switching value, and the output signal of temperature sensor is a simulating signal.Because the number of channels of simulating signal is few, so control circuit uses the mode of the additional analog module of PLC.Also can use the mode of PLC add-on module to control as for the intelligent acoustic hood vacuum of bilayer acoustic booth air inlet driving motor.At last, the utility model has also carried out the simulated experiment checking to the hardware circuit and the software program of control system, and the result shows: total system is safe and reliable, satisfies technical requirement, has very strong practical value.

The utility model is on the basis of original patent; The sound insulating theory of double wall is combined with the vacuum sound insulating theory; Acoustic hood is divided between vacuum acoustic booth and sound absorption heat radiation; Innovation proposes to be nested with a kind of novel double-layer intelligence acoustic hood between the sound absorption heat radiation at the vacuum acoustic booth, realizes that oise insulation factor and internal temperature are controlled, can satisfy different sound source users' requirement.The oise insulation factor of this dual acoustic hood can intelligent be controlled; Noise source to the different frequency scope can well insulate against sound; Particularly perplex the low-frequency noise control problem of field of vibration noise, and solved the ventilation and heat problem in the acoustic hood simultaneously, have hommization, intelligentized advantage.

Description of drawings

The arrangenent diagram of the double-deck intelligent acoustic hood of Fig. 1;

The double-deck intelligent acoustic hood vacuum acoustic booth air inlet structure schematic diagram of Fig. 2;

Air inlet structure schematic diagram between the double-deck intelligent acoustic hood sound absorption of Fig. 3 heat radiation;

The double-deck intelligent acoustic hood vacuum acoustic booth air inlet drive mechanism schematic diagram of Fig. 4;

The double-deck intelligent acoustic hood vacuum acoustic booth air inlet electrical equipment control schematic diagram of Fig. 5;

Exhaust system electrical equipment control schematic diagram between the double-deck intelligent acoustic hood sound absorption of Fig. 6 heat radiation;

A kind of whole assembling front view of double-deck intelligent acoustic hood that Fig. 7 oise insulation factor and internal temperature are controlled;

Fig. 8 is the left view of Fig. 7;

Fig. 9 is the vertical view of Fig. 7;

Figure 10 be among Fig. 9 A-A to cut-open view;

Figure 11 be among Fig. 9 K to view;

Figure 12 is the another kind of whole assembling front view of the controlled double-deck intelligent acoustic hood of oise insulation factor and internal temperature;

Figure 13 is the left view of Figure 12;

Figure 14 is the vertical view of Figure 12;

Figure 15 be among Figure 14 A-A to cut-open view;

Figure 16 be among Figure 14 K to view;

1. acoustic hoods wherein, 2. soundproof door, 3. sonic transducer, 4. between the sound absorption heat radiation, 5. vacuum acoustic booth; 6. air-intake device, 7. air exhausting device, 8. temperature sensor, 9. control device; 10. noise source, 11. vacuum acoustic booth air inlet sound suppressors, the outer body of wall of 12. vacuum acoustic booths, 13. sealing roll curtain doors; 14. vacuum acoustic booth air inlet sound suppressor bracing frame, air inlet sound suppressor between 15. sound absorption heat radiations, body of wall between 16. sound absorption heat radiations, 17. air cleaner; 18. air inlet sound suppressor bracing frame between the sound absorption heat radiation, 19. roller shutter door-hinges, 20. gear trains, 21. steppings or servomotor.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Layout such as Fig. 1 of double-deck intelligent acoustic hood; Air inlet structure principle such as Fig. 2 of double-deck intelligent acoustic hood vacuum acoustic booth; Air inlet structure principle such as Fig. 3 between double-deck intelligent acoustic hood sound absorption heat radiation; Air inlet drive mechanism principle such as Fig. 4 of double-deck intelligent acoustic hood vacuum acoustic booth; Air inlet electrical equipment control principle such as Fig. 5 of double-deck intelligent acoustic hood vacuum acoustic booth; Exhaust system electrical equipment control principle such as Fig. 6 between double-deck intelligent acoustic hood sound absorption heat radiation.

The enforcement of the utility model mainly comprises machinery and electrical equipment control two parts.Wherein mechanical part mainly is made up of controlled air inlet sound suppressor of acoustic hood 1, soundproof door 2, controlled low-noise centrifugal exhaust system (two covers), air quantity and common air inlet sound suppressor etc.; And electrical appliance part mainly is made up of control section and servo control mechanism etc.

The double-deck intelligent acoustic hood that oise insulation factor and internal temperature are controlled; Comprise acoustic hood 1; Acoustic hood 1 is provided with soundproof door 2; Acoustic hood 1 outside is provided with sonic transducer 3, inside and outside said acoustic hood 1 comprises between nested sound absorption heat radiation 4 with vacuum acoustic booth 5,4 all are connected with air-intake device 6 and air exhausting device 7 with vacuum acoustic booth 5 between said sound absorption heat radiation; Be provided with temperature sensor 8 in 4 between said sound absorption heat radiation, said air-intake device 6, air exhausting device 7, sonic transducer 3 all link to each other with the control device 9 of acoustic hood 1 outside with temperature sensor 8.During use, this device is installed in the outside of noise source 10, noise source 10 is positioned between the sound absorption heat radiation 4, around it will and the sound absorption heat radiation between body of wall 16 leave suitable distance.

The double-deck intelligent acoustic hood integral installation figure that oise insulation factor and internal temperature are controlled such as Fig. 7-shown in Figure 16; Wherein Fig. 7-structure shown in Figure 11 is that independent sound insulationg board is used at 4 tops respectively between vacuum acoustic booth 5 and sound absorption heat radiation; Between the top of 4 top and vacuum acoustic booth 5 certain interval is arranged between the sound absorption heat radiation; This structure is applicable to the situation that control is had relatively high expectations to oise insulation factor, and its shortcoming is the complex structure of acoustic hood; Figure 12-structure shown in Figure 16 is 4 shared sound insulationg boards between vacuum acoustic booth 5 and sound absorption heat radiation, and this structure has economical and convenient and the higher characteristics of structural stability.

1. mechanical part embodiment:

Acoustic hood 1: consider the problem of aspects such as reliability, sealing, life-span, all sound insulationg boards of the utility model all adopt the two-sided compound warming plate of polyurethane.Because groove and hook are arranged in the junction between the plate plate, and thickness of slab can require to select according to sound insulation, and installation and removal are convenient, are convenient to maintenance, and defening effect is good simultaneously.Adorning Micropunch Acoustic Board on 4 inwalls between the sound absorption heat radiation, improving the interior absorption of cover acoustic energy.Say that in principle if sealing property is very high, this acoustic hood can be eliminated the sound source noise fully.

Soundproof door 2: the soundproof door of standard is arranged on the market, the soundproof door that two soundproof doors 2 of the utility model adopt the two-sided compound warming plate of polyurethane of same model to process.

Controlled low-noise centrifugal exhaust system (7 liang of covers of air exhausting device): system adopts the centrifugal fan of low noise, is installed on the ground of acoustic hood 1.One of air inlet terminates on the top of acoustic hood 1 inside; One cover with 4 communicate between sound absorption is dispelled the heat; Another set of and vacuum acoustic booth 5 communicate, and their other end joins with the air inlet of low-noise centrifugal exhaust blower respectively, and the outlet of exhaust blower is connected on the air inlet of exhaust duct; The outlet of exhaust duct is led to the outside of factory building through total air escape pipe, with atmosphere.

Air-intake device 6 comprises air-intake device and vacuum acoustic booth air-intake device between the sound absorption heat radiation.

Vacuum acoustic booth air-intake device comprises vacuum acoustic booth air inlet sound suppressor 11; This sound suppressor 11 is installed on the vacuum acoustic booth exterior wall 12; Its bottom is equipped with vacuum acoustic booth air inlet sound suppressor bracing frame 14; The air inlet front portion of vacuum acoustic booth air inlet sound suppressor 11 is provided with sealing roll curtain door 13, and roller shutter door-hinge 19 links to each other with stepping or servomotor 21 through gear train 20.Be connected on the roller shutter door-hinge 19 with good seal performance through shaft coupling and reducing gear by servomotor (requiring also available step motor) according to control; The rolling screen door with good seal performance 13 that drive is loaded on the sound suppressor air inlet moves up and down, and at this moment the centrifugal exhaust system of low noise (air exhausting device 7) is in controlled air draft state.When the rolling screen door 13 of favorable sealing property moved downward, the air inlet of sound suppressor was just blocked, and the vacuum tightness of vacuum acoustic booth 5 improves, and the acoustic pressure or the sound intensity value of the noise source that device external sonic transducer 3 is measured will reduce because of the raising of vacuum tightness; Otherwise sealing roll curtain door 13 moves upward, and the air inlet of sound suppressor just increases, and reduces the vacuum tightness of vacuum acoustic booth 5, and sonic transducer 3 measuring-signals are increased.Like this, the oise insulation factor of whole acoustic hood is remained on the target value set and (specifically see Fig. 2).

Air-intake device comprises air inlet sound suppressor 15 between the sound absorption heat radiation between the sound absorption heat radiation; This sound suppressor 15 is installed between sound absorption heat radiation on the body of wall 16; Air inlet sound suppressor 15 bottoms are provided with air inlet sound suppressor bracing frame 18 between the sound absorption heat radiation between the sound absorption heat radiation; For ventilation and heat is abundant, air inlet and exhaust outlet are diagonal line and distribute.Because of 4 air inlet between sound absorption heat radiation is in normally open; For guaranteeing good defening effect; Will there be higher sealing each junction of air inlet sound suppressor 15 between the sound absorption heat radiation; And in airborne impurity (dust) entering acoustic hood 1, air inlet sound suppressor 15 has installed air cleaner 17 (specifically seeing Fig. 3) additional between the sound absorption heat radiation.

2. electrical appliance part embodiment

1) intelligent double acoustic cover vacuum acoustic booth air inlet electrical equipment control principle such as Fig. 5.Electrical appliance part mainly is made up of control section and servo control mechanism etc.Because the sonic transducer 3 that is installed in the sound insulation device external can detect the actual value of the acoustic pressure or the sound intensity; Electrical control part is with the input as computer control system (or PLC) of the difference of this measured value and control target; After relatively, carry out power amplification; Pass through shaft coupling and speed reduction unit by interchange or DC servo motor (requiring also available step motor) according to control; The rolling screen door with good seal performance 13 that drive is loaded on vacuum acoustic booth sound suppressor air inlet moves up and down, thereby the size of control intake realizes the intellectuality control to different noise sources.

2) exhaust system electrical equipment control principle such as Fig. 6 between double-deck intelligent acoustic hood sound absorption heat radiation.This electrical control part mainly contains hardware circuit and Control Software two parts are formed, and realizes the real-time Monitoring and Controlling to temperature.When the temperature sensor in the acoustic hood 18 detects temperature exceeding standard, simulating signal is passed to PLC through the simulation control module, control starts the air draft of sound and light alarm and blower fan, thereby realizes temperature controlling in the acoustic hood 1 is guaranteed good heat radiation.

Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technical scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.

Claims (7)

1. oise insulation factor and the controlled double-deck intelligent acoustic hood of internal temperature; Comprise acoustic hood; Acoustic hood is provided with soundproof door, and the acoustic hood outside is provided with sonic transducer, it is characterized in that; Inside and outside said acoustic hood comprises between nested sound absorption heat radiation with the vacuum acoustic booth; All be connected with air-intake device and air exhausting device with the vacuum acoustic booth between said sound absorption heat radiation, be provided with temperature sensor between said sound absorption is dispelled the heat, said air-intake device, air exhausting device, sonic transducer and temperature sensor all link to each other with the control device of acoustic hood outside.

2. the double-deck intelligent acoustic hood that oise insulation factor as claimed in claim 1 and internal temperature are controlled is characterized in that, and is gapped between the top between said sound absorption heat radiation and the top of vacuum acoustic booth.

3. the double-deck intelligent acoustic hood that oise insulation factor as claimed in claim 1 and internal temperature are controlled is characterized in that, the top between said sound absorption heat radiation and the shared sound insulationg board in top of vacuum acoustic booth.

4. like claim 2 or 3 described oise insulation factors and the controlled double-deck intelligent acoustic hood of internal temperature, it is characterized in that said air-intake device comprises air-intake device and vacuum acoustic booth air-intake device between the sound absorption heat radiation; Air-intake device comprises the sound absorption heat radiation air inlet sound suppressor on the body of wall that is arranged between the sound absorption heat radiation between said sound absorption heat radiation; Sound absorption heat radiation air inlet sound suppressor bottom is provided with sound absorption heat radiation air inlet sound suppressor bracing frame, and the air inlet front portion of sound absorption heat radiation air inlet sound suppressor is provided with air cleaner;

Said vacuum acoustic booth air-intake device comprises the vacuum acoustic booth air inlet sound suppressor that is arranged on the outer body of wall of vacuum acoustic booth; Vacuum acoustic booth air inlet sound suppressor bottom is provided with vacuum acoustic booth air inlet sound suppressor bracing frame; The air inlet front portion of vacuum acoustic booth air inlet sound suppressor is provided with the sealing roll curtain door, and the sealing roll curtain door links to each other with stepping or servomotor through gear train.

5. the double-deck intelligent acoustic hood that oise insulation factor as claimed in claim 4 and internal temperature are controlled is characterized in that, the exhaust outlet of its corresponding air exhausting device of air inlet of said sound absorption heat radiation air inlet sound suppressor is diagonal line and distributes.

6. the double-deck intelligent acoustic hood that oise insulation factor as claimed in claim 5 and internal temperature are controlled is characterized in that, the exhaust outlet of its corresponding air exhausting device of air inlet of said vacuum acoustic booth air inlet sound suppressor also is diagonal line and distributes.

7. the double-deck intelligent acoustic hood that oise insulation factor as claimed in claim 6 and internal temperature are controlled; It is characterized in that the air exhausting device with the vacuum acoustic booth between said sound absorption heat radiation all adopts the centrifugal exhaust blower of low noise, is installed on the ground of acoustic hood; One of the corresponding air inlet of centrifugal exhaust blower terminates on the inner top of acoustic hood; And communicate with the vacuum acoustic booth respectively with between the sound absorption heat radiation, the air inlet of the other end and the centrifugal exhaust blower of low noise joins, and the outlet of the centrifugal exhaust blower of low noise is connected on the air inlet of exhaust duct; The outlet of exhaust duct is led to the outside of factory building through total air escape pipe, with atmosphere.

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