JPS6128417A - Device for purifying contaminated air and supplying closed space with purified air - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to ventilation and air systems, and more particularly to systems for purifying contaminated air and providing clean air to enclosed spaces.

The present invention can be applied to a device that biologically purifies contaminated air and supplies clean air, such as sterile air for treatment, to a closed space.

Equipment that purifies contaminated air and supplies clean air to hospital wards (
Published in 1976 by δrpis in E, E.
12 and 22 of ``Hospital Air Conditioning'') is known to consist of a fan with an intake duct and a pressurized air duct, and a germ filter.

Eliminating noise stimulation is a major requirement for hospital rooms. Therefore, in order to provide the necessary auditory comfort, this known device M has a noise absorbing material that can be fitted inside the air duct, and for which the fan is separated from the room in which it is used. It is desirable that the equipment be installed in a suitable location.

In hospital wards, high demands on the level of auditory comfort lead to excessive dimensions and shapes of noise suppressors. The known devices described above are therefore oversized and bulky. It should be noted that the noise is mainly generated by the fan and propagates through the g&air and pressure air streams as well as leaking outside the fan.

These airflow noises are commonly referred to as aerodynamic noise.

Further known is a device for purifying contaminated air and supplying clean air to closed spaces by the company 'Atlas Copko AB', known under the trademark '5uperquet Air' (1977, F. Laguno).
Books by v'Borba's Shumom Ko
mpre-ssornykh ustanovok""
(See “Noise Suppression of Compressor Equipment”). Below this is “
"known device".

This known device consists of a soundproofing device with a hollow, sound-insulated wall, a port for inlet of contaminated air and a port for outlet of clean air, and a blower mounted inside the housing. Consisting of The passage formed in the wall is used as an intake duct. Furthermore, soundproofing I・
Uzing is expanded to suppress noise generated by the blower.

In order to achieve the required auditory comfort, the known device is provided with an additional noise suppressor that can be installed one after the other in the intake duct.This configuration of the known device is structurally too complex, but , consisting of a soundproof housing with an I-t for admitting zero-contaminated air and for expelling clean air, making it possible to achieve acceptable overall dimensions,
Devices for purifying contaminated air and supplying clean air (see Soviet Inventor Certificate No. 3 QIO) are further known. No Kuzing is sound insulated by lining its inner walls with known sound-absorbing materials.

A sound insulating partition is provided inside the housing and separates the housing into an upper and a lower chamber. The lower chamber contains a fan, whereas the upper chamber has a high-performance air filter.

L Es 4% Ay+ r-J-+ h Soro I-ky
l-%de Kamodate/7 L L C power air duct,
The hollow sound-insulating housing is composed of nine walls, each of which is separated into one isolated air duct by a diaphragm.

One of these air ducts, in particular the intake duct, communicates on the one hand with a round port for admitting contaminated air and on the other hand with the lower chamber. The pressure air duct communicates with the pressure conduit of the fan and the upper chamber of the housing.

The inlet duct of the high-performance filter, located in the upper chamber, communicates with said upper chamber, whereas the outlet of the high-performance filter communicates with a port for discharging clean air.

Therefore, λ channels for the movement of air are formed in the known device by means of the above-mentioned constructional features, these channels being: Namely: (1) an intake air flow extending from a port for admitting contaminated air to an intake duct in the hollow, sound-insulated wall of the /% Uzong and through the lower chamber of the housing to the intake conduit of the fan; and (2) a pressure flow path extending from the pressure conduit of the fan through a pressure air duct, an upper chamber, and a filter in the hollow, sound-insulated wall of the housing to a sixth port for discharging clean air.

Due to the lack of special air ducts, the overall dimensions of the device described above can be reduced considerably.

Intake ducts and pressure air ducts are formed in the walls of the housing, which are lined with sound-absorbing material, so that these air ducts absorb the aerodynamic noise generated by the air flow sucked in and pumped by the fan. Functions as an inhibitor.

The above noise suppressors, commonly referred to as active noise suppressors, are:
The walls of the air duct act to absorb the acoustic vibrational energy of the airflow. Since the pond situation is the same, the efficiency of the noise suppressor is determined by the length of the air duct.

In the above-mentioned known device, the upper and lower chamber expansions, as well as the walls of the housing, are lined with sound-absorbing material.

These chambers are designed to serve as a second noise suppression stage.
They are arranged in order along the air movement path.

Such noise suppressors are commonly referred to as reactivated noise suppressors, and their effect is reduced when the velocity of the airflow entering one of the chambers via the air duct is suddenly reduced. The purpose is to absorb the acoustic mtthox energy of the airflow in the room.

To reduce the aerodynamic noise generated by the air flow,
The soundproof housing of the device serves to suppress the noise generated by the operation of the fan.

As a result, a device that purifies contaminated air and supplies clean air to an enclosed space guarantees sufficient room comfort with a device whose overall size and weight are relatively small. However, efficient noise In order to obtain an intake duct of sufficient length and a pressurized air duct to provide suppression, it is necessary to make the walls of the housing of the known device entirely hollow, thereby increasing its thickness. Such a construction of the housing makes it impossible to limit the overall dimensions of the device for purifying contaminated air and supplying clean air.

Furthermore, until now &! The hollow walls of the known device as described above extend the length of the diaphragm separating the pressure air duct and the intake duct to the extent that the size and weight of the device can be accommodated.

The operating conditions also require that the membrane diaphragm separating the hollow sound-insulating wall must be carefully sealed. The extended length of the dia 725 secured around the upper and lower chambers complicates installation and may cause substantial leakage from the pressurized air duct to the intake duct. The above-mentioned structural features of the known device are disadvantageous.

Additionally, the lower hollow branch of the housing of known devices is not sufficiently rigid, which affects the vibro-acoustic properties of the device.

Therefore, the present invention purifies contaminated air! -1 Wi clean air
Regarding the device for supplying the chain space, such a device is constructed in such a way that the device is simple in construction, small in size and achieves high S-chamber comfort.

An object of the present invention is to provide a device for purifying contaminated air and supplying clean air to a closed space, the soundproof housing having a port for introducing contaminated air and a port for discharging clean air. A sound-insulating partition separating the housing into an upper and a lower chamber; one such chamber houses a fan, said fan being formed in the partially hollow wall of the sound-insulating second housing and admitting clean air; The other chamber accommodates a filter, the filter inlet and inlet communicate with the pressure air duct, and the outlet of the filter communicates with the pressure air duct, and the other chamber accommodates a filter According to the invention, in said device, in communication with the port for discharging air, the soundproof housing further comprises seven soundproof partitions, which partitions constitute passages serving as pressurized air ducts. a wall of an intake duct and a pressurized air duct, the air being disposed substantially parallel to said first sound-insulated bulkhead and spaced apart from said first sound-insulated partition; This is achieved by means of a device which further comprises elements attached to form an air labyrinth.

The device with the aforementioned intake duct and a pressurized air duct for purifying contaminated air and supplying clean air to an enclosed space guarantees a sufficiently high vibro-acoustic comfort and is superior to devices according to the prior art. Also, it is not structurally complex! L quantity is light,
Overall dimensions are small.

The device according to the invention is applicable for use in hospitals or clinics due to the low level of noise generated by the device during operation and the relatively small size of the device.

The device can be installed both inside and outside the ward without irritating patients or staff with vibro-acoustic sensations. The device is also advantageous because it occupies less floor space.

The present device embodying features of the invention may alternatively not be specially equipped with a relatively bulky HEPA-type bacterial filter used to purify contaminated air and provide clean air. Even when used in hospital wards, it can be configured as a portable mobile device.

The foregoing features of the invention, as well as other resulting advantages, will become more fully apparent from a consideration of specific embodiments described below with reference to the accompanying drawings.

The device according to the invention for purifying air and supplying clean air to an enclosed space comprises, as shown in FIG. Consists of 1.

Soundproofing: Uzing l protects a closed space from the noise and vibrations associated with the operation of this device, which accommodates the various elements described below in the processing order and purifies the air to be supplied to the closed space. It is supposed to be done.

The housing 1 is a casing 4 of known suitable box-shaped structure.
have. The structure of the housing 1 is such that the inside is lined with a known suitable sound absorbing material 5.

A filter 6 of known suitable construction for pre-cleaning contaminated air is installed at the inlet 4-t 2 in a known conventional manner.

The housing 1 accommodates a horizontal partition 7 which is sound insulated on both sides and which connects the housing 1 to an upper chamber 8 and a lower chamber 9.
Separate into two parts. The sound insulation material (not shown) of the partition wall 7 is the same as the sound insulation material of the housing 1 described above.

A 77 tube 10 of suitable known design is placed in the lower chamber 9. Fan 10 is...J? -) The trap is configured to draw in contaminated air from 2, pump the air towards the components of the apparatus described below, and discharge clean air from outlet port 3 into the enclosed space in use.

Nine suction or intake ducts 11 are provided in the lower chamber, constituted by a hollow lower wall 12 of the housing l.

In order to structurally form the interior of the intake duct 11, the housing 1 is arranged substantially parallel to the wall 12 and spaced apart from the wall 12 by a sound insulating interior! 11
It has 3.

The fan 10 has a vibration area-damping support 1 of known suitable construction.
4 is installed on the lower inner wall 13.

The intake duct 11 communicates with the pneumatic artificial boat 2 via a passage 15. The passage 15 is sound insulated similar to the previously described sound insulated elements of the housing l.

The intake duct 11 communicates with the lower chamber 9 via a port 16 made in the wall 13.

The pressurized air duct 17 is in contact with the upper part of the lower chamber 9.

Pressurized air duct 17 conveys the air from fan 10 towards filter 18 for final cleaning. The structure of the air duct 17 will be explained later in this description.

The final cleaning filter 18 located in chamber 8 is of any known and suitable design.

Any conventional HEPA type (High Performance Particulate Filter) bacterial filter may be used as filter 18 for therapeutic purposes.

Inlet 19 of filter 18 communicates with pressurized air duct 17 via upper chamber 8 .

An outlet 20 of filter 18 communicates with outlet port 3 for discharging clean air from housing 1 . A filter 21 of any suitable construction may be used to communicate the outlet 20 of the filter 18 with the port 3. In a device for purifying air and supplying air to a closed space, this adapter 21 is formed as a ventilation tube provided at the connection position with the outlet 20 of the filter 18 by means of a seal of known suitable construction. Good.

The filter 18 is fixed in position inside the chamber 8 by means of fasteners 23 suitable for the purpose.

The location where the adageter 21 penetrates the wall of the nousing 1 is sealed by known methods, such as by welding (not shown).

The wall 8a of the chamber 8 can be removed from the housing 1 to facilitate the installation of the filter 18. The removable structure of this wall portion 8a will not be disclosed in detail, since this is not relevant to the gist of the present invention.

In order to reduce the overall size of this device, only a portion of the wall of the housing 1 is made hollow. As explained above, the lower hollow wall 12 constitutes the intake duct 11 together with its sound insulating material.

In order to constitute a passageway (not indicated with a reference number) serving as a pressurized air duct 17, the housing 1 is placed in a sound-insulated space a! Seven more partition walls 24 are provided, which are sound-insulated on both sides, and are mounted approximately parallel to the partition wall 7 at a certain distance therefrom.

The distance between the partition walls 7 and 24 is selected depending on the acoustically acceptable velocity of the air flow in the air duct 17, and the distance between the walls 12 and 13 is likewise selected depending on the velocity of the air flow in the duct 17. The selection will be made accordingly.

The pressurized air duct 17 communicates with the chamber 8 via a port 25 and with a pressure port (not shown with a reference number) of the fan 10 via a conduit 26.

The conduit 26 is of any known suitable construction made of vibration damping material to prevent the transmission of vibrations from the fan 10 to the housing 1. The guide W″26 is connected to the pressure air duct 17.
In the position connected to? -) 26a is made on the partition wall 24.

As previously explained, the air ducts 11 and 17 are lined with a sound absorbing material 5 which serves as an active noise suppressor.

The ability of these noise suppressors is determined by their length. For this purpose, the housing 1 is attached to the walls 12 and 13 of the intake duct 11.
and bulkheads 7 and 24 serving as walls of the pressurized air duct 17
It has a member 27 firmly attached to it.

The member 27 has the form of a flat bulkhead and is lined with sound-absorbing material 5 in any known suitable manner and is provided in said air duct 11, 17 so as to form a moving labyrinth of air flow. ing. In the pressurized air duct 17, the air flow flows through the labyrinth from port 26a to port 25 as shown in Figure 1.
In the intake duct 11, the air moves from a passage 15 to an opening 16 as shown in FIG.

The distance between one adjacent member, the seventh outermost member in the air duct 11, and the closest one to the housing 1.
The distance from the wall is approximately equal to that calculated according to the acoustically acceptable velocity of the airflow.

Said member 27 is installed in the air duct 17 in a similar manner.

Alternatively, member 27 may be zigzag in configuration (not shown).

A solid connection between the member 27 and W412, 13 of the intake duct 11, and a solid connection between the member 27 and the wall 24 of the pressure air duct 17,
The rigid connection with 7 makes the rigidity of the housing lS, especially its bottom part (not indicated by reference number) very large, and the
A device embodying the features of the invention for purifying air and supplying clean air to an enclosed space operates as follows.

Contaminated air is sucked in from the air purifying preliminary filter 6 by the air filter 77n10. After the filter 6, the air freed of large dirt particles is conveyed continuously to the lower chamber 9 through the trough 15, the labyrinth formed by the member 27 in the intake duct 11, and the port 16. Air is drawn in from chamber 9 by fan 10 and passed through conduit 26 for subsequent treatment.
is pumped along.

The aerodynamic noise generated by the air being sucked is therefore suppressed in two stages, more particularly first with an active noise suppressor, i.e. in the intake duct 11 with an airflow labyrinth; Thereafter, it is suppressed in the reactivation noise suppressor or chamber 9.

The noise generated by the fan 10 is transmitted to the soundproof housing 1
, and in particular by the lower chamber 9 of the housing 1, which accommodates the fan 1o.

Along conduit 26, air pumped by fan 10 is conveyed to pressure duct 17 from port 26a.

Following travel through the labyrinth of pressure ducts 17, it enters the upper chamber 8 through the pneumatic port 25. Air is in chamber 8
from there through the inlet 19 to the filter 18 .

After being filtered and purified, the air flows along the funnel-shaped ventilation opening 21 towards the outlet port 3 and is then supplied to a closed space such as a hospital room.

The suppression of the aerodynamic noise generated by the pumped air flow is carried out in λ stages, similar to the suppression of the noise resulting from the intake air, and more specifically, first with the active noise suppressor, i.e. the labyrinth of the air flow. This takes place in the air duct 17 and then in the reactivation noise suppressor, i.e. the chamber 8.

The high stiffness of the lower wall 12 of the housing 1, in conjunction with the vibration damping support 14 and the vibration suppression conduit 26, minimizes vibrations of the device for cleaning contaminated air and supplying clean air to an enclosed space. .

A device embodying the features of the invention is capable of controlling the volume of air supplied (j Om'/hr to 300 m''/hr).
was manufactured to meet the required proportions and successfully passed the test.

The noise from the fan was reduced from an initial level of 71 db to j j db with relatively low vibration.

In view of the foregoing, the present invention purifies contaminated air for clinical purposes, particularly to provide bacteria-free air to wards or treatment rooms for treating burns or trauma to limbs. , supplying clean air, making it possible to use this device.

When this device is installed inside or outside a hospital room, patients will not feel any noise stimulation.

[Brief explanation of drawings]

1 is a vertical sectional view of a device according to the invention for purifying contaminated air and supplying clean air to a closed space; FIG. 2 is a sectional view at ll-1@ of FIG. 1; , FIG. 3 is a sectional view taken along the line ll-1 in FIG. 1. Reference numbers used in the drawings Table 1: Soundproofing, 2: Artificial port for admitting contaminated air, 3:
Outlet for discharging clean air, J? -), 4...Casing, 5...Sound absorbing material 16...Filter,
7... Battle bulkhead, 8... Upper chamber, 9...
Lower chamber, 10... Fan, 11... Intake duct, 12... Wall, 13... Wall, 14... Support body, 15... Passage, 16... Port,
17... Pressure air duct, 18... Filter, 1
9...filter population, . 20... Filter outlet, 21... Funnel-shaped ventilation opening, 22... Seal, 23... Fastener, 24...
Bulkhead, 25... port, 26... conduit,
26a...port, 27...member. flg, 30 Inventors Vladimir Konsu Novitanti Nović Somia Rogub0 Inventors Vladimir Gu1 Nokoi 1 Noviliević Teichkei0 Inventors Tofik Mamedo Novi
Gasanov Kei Federal Republic Odessa Prospekt Shevche 3
EKK 19 Federal Republic of ETO Moskola Ulitsa Felkunesirotnicheskaya 2 KK 65 Federal Republic of KET Odessa Lunniy Pereurok 3v4 Kv1

Claims (1)

[Claims] A soundproof housing (1) has a port (2) for admitting contaminated air and a port (3) for discharging clean air.
The housing (1) has an upper chamber (8) and a lower chamber (
9), one such chamber (9) accommodating a fan (10), said fan (10) being a partially hollow part of the sound-insulating housing (1). The other chamber (8) is formed in the wall (12) and communicates with an intake duct (11) which communicates with an inlet port (2) for admitting clean air, and further communicates with a pressurized air duct (17). accommodating a filter (18), the inlet of said filter (
19) communicates with the pressure air duct (17), and the outlet (20) of the filter communicates with the port (3) for discharging clean air, purifying the contaminated air and closing the clean air. In the device for supplying a space, the sound-insulating housing (1) is provided with another sound-insulating partition (24), which separates said sound-insulating partition in order to constitute a passage serving as a pressurized air duct (17). The walls (12), (13) of the intake duct and the pressurized air duct (11, 17) are placed approximately parallel to the partition wall (7) with a fixed distance therebetween.
, (7) and (24), a member (27) is attached so as to form a labyrinth through which the air passes, an apparatus for purifying contaminated air and supplying clean air to a closed space.