DE202005002849U1 - Passive ventilated sound-reduction cabinet e.g. for multi-media and computers, forms differential air-pressure via boundary seals and fans - Google Patents

Abstract

A cabinet/housing (1) is divided into four zones flowed with a given quantity of air as required for damping equipment noise, and so as to retain the operating temperature. No additional impellers are needed since the device housing (2) is produced in combination with the boundary sealing (26) and with the help of the fans (3) to provide an air-pressure difference which gives rise to a steady-state air-stream which is conducted through the inlet aperture and then through further openings to the base plate (7).

Description

The idea is, thanks to the soundproofing cabinet [ 1 ], the noise level of technical equipment [ 2 ] (Computer, multimedia, etc.) Goes down. Studies have shown that continuous noise, especially in the workplace and in private stress for body and soul can mean. The advantage of this invention is that people in the vicinity of a technical device have a relaxed stay. With ever more powerful technical devices (computers, multimedia devices, etc.), more and more fan fans are being used to cool the hardware [ 3 ] (CPU, graphics card, etc.). These generate due to their rotations, body and airborne sound waves.

This invention is based on the problem of a soundproofing cabinet [ 1 ], which at the same time reduces the body and airborne sound, without additional fans, with passive cabinet ventilation.

Existing Soundproof cabinets have an active ventilation, resulting in a higher sound level results. The closets do not absorb structure-borne sound waves in the cupboard. Furthermore Do not have air- and soundproof cable bushings, as well as door hinges with friction moment.

The solution the problems is achieved with the features of claim 1. in the Regard to useful Equipment is based on the claims 2 to 19 referenced.

Due to the internal volume distribution of the cabinet [ 1 ] into four different zones, each zone will be assigned one or more tasks. The overall system [Fig. 1], ie the interaction of the four zones, only works with the corresponding technical device [Fig. 2 ], which sucks air. This peculiarity of the devices is used to create a steady flow of air through the zones in the cabinet.

In As a rule, the cabinet should have passive ventilation. Depending on the cooling power come different ventilation methods, with simple fans to small air conditioning units, used.

There are two different soundproof cabinets. Furthermore, these cabinets are named as the base module (BM1).
Extension modules (AM) will be added to these BMs [ 25 ].

• – Durch die Lufteintrittsöffnung [4] in Zone 1
• – Von Zone I nach Zone II und Zone III.
• – Von Zone II (Geräteaufnahmeraum) nach Zone III und Zone IV
• – Von Zone III (Grenzzone) durch Öffnung [13] nach Zone IV durch die Luftaustrittsöffnung [5] nach Aussen.
• – Die Zone II wird zusätzlich durch die Öffnung [12] in Zone IV entlüftet.
• – BM1 [Bild 2] besitzt einen seitlichen Luftauslass [5].
• – BM2 [Bild 3] besitzt eine nach oben gerichtete Luftaustrittsöffnung [6].

The air flow moves in the base module BM1 [Fig. 2] as follows.

• - Through the air inlet [ 4 ] in zone 1
• - From Zone I to Zone II and Zone III.
• - From zone II (equipment receiving space) to zone III and zone IV
• - from zone III (frontier zone) through opening [ 13 ] to zone IV through the air outlet [ 5 ] outward.
• - Zone II is additionally opened through the opening [ 12 ] vented in zone IV.
• - BM1 [Fig. 2] has a side air outlet [ 5 ].
• - BM2 [Figure 3] has an upwardly directed air outlet [ 6 ].

The air inlet opening [ 4 ] is located in one and / or several cabinet outer walls in the lower area. New air enters Zone I and is distributed so that the air in Zone II and Zone III 8th ] and [ 8th ] the bottom plate [ 7 ] arrived.

The air flowing from the bottom to the top is predominantly in zone II of the technical device [ 2 ] sucked in for cooling. The sucked air quantity is through the device [ 2 ], by means of device fans [ 3 ] blown into zone III. The remaining air in Zone II is released through the front opening [ 12 ] of the ceiling plate [ 11 ] led to Zone IV. The horizontal airflow in zone IV creates at the front opening [ 12 ] on the top of the ceiling panel [ 11 ] a negative pressure. This negative pressure sucks the residual air from zone II, similar to a chimney.

The increase the air velocity is generated by the cross section being the zone IV structurally so changeable is that every possible air speed is set.

In zone III the air-conditioning is highest, since the heat of the device 2 ] is derived directly into zone III.

The fans [ 3 ] the air bubbles perpendicular to the surface of the outer wall of the carcass, where the air flow spreads on all sides as it hits. The warm air that sinks down, forms a backwater in Zone III which is strongly heated.

In order to dissipate the air better and faster in zone III, the bottom plate [ 7 ] in the area where zone III is adjacent a variable ventilation opening [ 9 ] arranged.

in the If necessary, it is possible for zone III to produce a direct air supply from zone I for vertical venting, so that the warm air is transported better from zone III into zone IV can be.

Zone IV has the task of combining the air from Zone III and the extracted air from Zone II to reduce the total air flow through the air outlet [ 5 ] and or [ 6 ] from the To lead cabinet.

Through the technical device [ 2 ] Body and airborne sound waves are generated. The structure-borne noise emanating from the device passes over the device feet [ 32 ] into the specially mounted base plate [ 7 ].

The bottom plate is used to hold the device, absorption of structure-borne sound waves and also ensures the same time for the ventilation of Zone II and Zone III, since these air openings [ 8th ] and [ 9 ] owns.

It is protected by vibration insulation mat [ 14 ] above the zone I statically required vertically supported.

In addition, a circumferential separating strip [ 15 ] that the structure-borne noise does not get into the adjacent components. In normal supports, structure-borne sound waves are transmitted by the on-board beams.

The airborne sound is created in zone II. The sound waves pass from the inside to the outside, both through the loading and unloading [ 4 ] and vent holes [ 5 ] and [ 9 ], as well as through the cable bushings [ 16 ] and [ 21 ].

The inner surfaces Zone II will be covered with insulation material entire area dressed. The sound that escapes through Zone I also becomes from the insulation reduced.

A dust filter in front of the air inlet opening [ 4 ] insulates additionally. The sound waves in zone III are absorbed in insulated walls. In Zone IV, the airflow is conducted soundproofed outside.

The BM2 [Fig. 3] has an alternative, upwardly directed air outlet [ 6 ] from zone III into zone IV. This venting assumes that a corresponding AM (extension module) [ 25 ] is mounted on the BM with integrated zone IV. Zone IV will vary in cross section and / or height depending on the AM type.

Using software / hardware it is possible to monitor the temperature of the hardware and, if necessary, to check the fan revolutions of the device [ 2 ] to reduce. This has the advantage that the emission level at the technical device [ 2 ] is already low in origin.

The Principle of the air flow can only be successful if the cooling air is controlled in and out. No secondary air may be sucked in.

The door seal [ 24 ] consists of rectangular, closed-cell art or natural materials.

The boundary seal [ 26 ], which serves as a separation between air intake [II] and air overpressure zone [III], must be connected to the device housing [ 2 ] sealingly cling [Fig. 7].

The cable ducts in the soundproof cabinet [ 1 ] must fulfill important tasks. Despite having different cable cross-sections in one plane, they must lead the cables out of the cabinet in air-tight and soundproof fashion.

Since the devices not only from behind, but also with data cables (USB, Firewire cable, etc.) [ 22 ], a cable entry has been made [ 21 ] at the door [ 22 ] designed.

• – Luft- und Schalldichtigkeit
• – Bei offener Tür kein Kabelsalat vor dem Gerät
• – Schnelle und gute Handhabung

The most important requirements are:

• - Air and soundproof
• - If the door is open, no cable clutter in front of the device
• - Fast and easy handling

The front cable feed-through [Fig. 4] is located in the upper part of the revolving door [ 22 ] between the sealing profile [ 21 ] which in a recess of the ceiling plate 11 ] is mounted, and between the circumferential door seal [ 24 ].

The cables are closed by closing the door [ 23 ], from the door seal [ 24 ] into the soft sealing profile [ 21 ], which nestles around the cable cross-sections, so that neither sound nor air can penetrate to the outside or inside.

To cable clutter with the door open [ 23 ], a cable holder [ 27 ] is placed on the inner surface of the door to secure the position of the cables.

The rear cable entry [Fig. 5] is equipped with a sliding door [ 18] closed and sealed. The sliding door is a cuboid component with at least two oblong holes each above and below [ 20 ]. These elongated holes make the fasteners [ 31 ], the sliding door [ 18 ] to the wall unit [ 1] press.

The sliding door [ 18 ] and its counterpart [ 17 ] have on each side a recess in which an elastic sealing tape [ 16 ] is mounted.

When closing the door, the cable holders [ 19 ] fixed power and data cables between the opposite cable seals [ 16 ] compressed air and soundproof.

The cable opening can be used to work on the back of the device [ 2 ] be increased by the sliding door [ 18 ], by removing the fasteners [ 31 ], dismantled.

For the order of the cables and to reduce the airflow resistance, the cables in zone III are connected by means of cable holders [ 19 ] fixed. All cable holders are detachable.

In Zone III is enough space to accommodate cables and sockets there.

The cabinet door [ 23 ] and sliding door [ 18 ] can be locked as required.

In order to maintain the air flow, it is essential to periodically remove the dust filter in front of the air inlet opening [ 4 ] to clean.

The Maintenance of the dust filter is due to the rollability of the cabinet simplified.

Safety during operation is ensured by door hinges [ 30 ] achieved with a friction moment. In contrast to conventional hinges, these cause the door [ 23 ] neither rises nor falls. By this holding force, which is changeable, the door stops in its position and does not hinder.

The door [ 23 ] may consist of wood-based materials or soundproof glass.

assignments:

image 1: Overview

image 2: Basic module 1, side cut

image 3: base module 2, side cut

image 4: front cable feedthrough

image 5: rear cable entry

image 6: Detail boundary seal

image 7: Limit sealing principle

image 8: ceiling plate

image 9: Support floor plate

1

cabinet

2

technical Device (PC, multimedia, ..)

3

equipment fans

4

lateral Air inlet opening

5

lateral Air outlet opening

6

upper Air outlet opening

7

baseplate

8th

front opening bottom plate

9

rear opening bottom plate

10

Electricity- and data cables

11

ceiling tile

12

front opening ceiling plate

13

rear opening ceiling panel

14

vibration insulation

15

separating strips

16

rear elastic cable seal

17

counterpart

18

sliding door

19

cable holder

20

slots

21

front elastic cable seal

22

front data cable

23

revolving door

24

door seal

25

expansion module

26

cross seal

27

cable holder

28

contraption

29

sealing lip

30

friction hinges

31

fastener

32

Device base

Claims (19)

Cabinet [ 1 ] a technical device [ 2 ] is divided into four zones, which are flown through by the amount of air that is used for the sound-insulated cooling of the device [ 2 ] is required to keep it at operating temperature, the cabinet requires 1 ] no additional fans, because the device housing [ 2 ] in combination with the boundary seal [ 26 ] with the help of the device fans [ 3 ] establishes an air pressure difference that causes a steady flow of air introduced through the inlet port [ 9 ], further from bottom to top through the openings [ 8th ] and [ 9 ] in the bottom plate [ 7 ] into zone II or zone III, the air flows through the device [ 2 ] and escapes through the openings [ 13 ] and [ 12 ] in the ceiling panel [ 11 ], into zone IV, which ensures that the rising warm air flows laterally through the outlet [ 5 ] and / or through the upward outlet [ 6 ] soundproofed out of the cabinet [ 1 ] to be led. Acoustic enclosure according to claim 1, characterized in that the bottom plate [ 7 ] absorbs structure-borne noise because it is partially based on vibration insulation [ 14 ] is vertically mounted. Acoustic enclosure according to claim 1, characterized in that a peripheral separating strip [ 15 ] ensures that no body sound transmission between the base plate [ 7 ] and rising components. Acoustic enclosure according to claim 1, characterized in that the bottom plate [ 7 ] at least two ventilation openings [ 8th ] and [ 9 ] owns. Acoustic enclosure according to claim 1, characterized in that the boundary seal [ 26 ] in combination with the device [ 2 ] Separates zone II from zone III. Sound insulation cabinet according to Claims 1 to 5, characterized in that the boundary seal [ 26 ] from a device [ 28 ], the elastic sealing lip [ 29 ] positively and / or non-positively absorbs and as a whole to the cabinet [ 1 ] attached. Sound insulation cabinet according to Claims 1 to 5, characterized in that the boundary seal [ 26 ] on the inner surfaces of the cabinet [ 1 ] is peripherally mounted, that the device [ 2 ] is enclosed. Acoustic enclosure according to claims 1 to 7, characterized in that by inserting the device [ 2 ] in the boundary seal [ 26 ], to the sealing lip [ 29 ], the device housing [ 2 ] clings tightly. Sound insulation cabinet according to claims 1 to 8, characterized in that the ceiling panel [ 11] Zone II of zone IV, partially permeable to air, separates. Acoustic enclosure according to Claims 1 to 9, characterized in that the front cable bushing [ 21 ] on the horizontal and / or vertical edges of the door leaf [ 23 ] can be located. Acoustic enclosure according to claim 1 to 10, characterized in that in horizontal and / or vertical body parts a recess for receiving the cable seal [ 21 ] is incorporated. Acoustic enclosure according to Claims 1 to 11, characterized in that, as a result of the door being closed, the cables [ 22 ], due to the surrounding door seal [ 24 ] in the sealing profile [ 21 ] is pressed air and soundproof. Soundproof cabinet according to Claims 1 to 12, characterized in that cable holders [ 27 ] the location of the data cables [ 22 ] fix. Acoustic enclosure according to claims 1 to 13, characterized in that the sliding door seal [ 16 ] rear cables [ 10 ] of the technical device air-tight and sound-proof from the cabinet [ 1 ] leads. Soundproofing cabinet according to Claims 1 to 14, characterized in that the cable feedthrough consists of at least two devices [ 17 ] and [ 18 ] consist. Acoustic enclosure according to claims 1 to 15, characterized in that the sliding door [ 18] with releasable fasteners [ 31 ] to the cabinet [ 1 ] is pressed air and soundproof. Acoustic enclosure according to claims 1 to 16, characterized in that in the opposite recesses the cable seals [ 16 ], which are the cables [ 10 ] of the device [ 1 ] enclose air and soundproof on both sides. Acoustic enclosure according to claims 1 to 17, characterized in that the cables [ 10 ] by means of cable holder [ 19 ] are fixed, and in the poem [ 16 ] are embedded. Soundproofing cabinet according to Claims 1 to 18, characterized in that the door hinges [ 30 ] have a friction torque.