CN2472122Y - Clean ventilating ceiling for operation room - Google Patents

Abstract

The utility model relates to a clean air supply ceiling for operating rooms, which is characterized in that a high efficiency filter casing and a filter are arranged above the air inlet of a static pressure box along the airflow direction, and a distributor is arranged on the air intake of the static pressure box, and a leakage resistance layer is arranged under the static pressure box and is made of low resistance sub-high efficiency filter material; the resistance range of the filter material is 40 to 80 Pa, and the filter efficiency is in the range of sub-high efficiency. The utility model has the advantages that, with the leakage resistance layer, the routine mode in which the high efficiency filter has to be arranged at the air supply end is broken through; the building height of each storey is reduced; the installation and maintenance for the filter are convenient; the dust bearing concentration of the room is decreased again, and the clean zone area is enlarged by more than one time. The utility model is suitable for operating rooms and turbulent flow clean rooms comprising unidirectional flow hundred grades area.

Description

The cleaning air-supply smallpox of operating room

The utility model belongs to from gas the filter that separates dispersed granules, and particularly a kind of filtration, resistance of the clean room air-supply furred ceiling setting at hospital operating room leaked, the cleaning air-supply day embossing device of the air-flow that evenly distributes.

At present, supply air system is set usually in the furred ceiling of hospital operating room clean room, the conventional high efficiency particulate air filter that adopts exposes to the furred ceiling face as end equipment, utilizes the filter paper filter core and the frame hermetically-sealed construction of high efficiency particulate air filter, reaches: filtered air, improve cleanliness factor; Uniform air-flow forms parallel way flow; The frame sealing prevents that the flow leakage of filtered from entering clean workspace.But,, need ceiling void height bigger to making because the high efficiency particulate air filter volume is bigger; Because high efficiency particulate air filter is in making, transportation, installation process, can abrade the filter paper filter core inevitably, micropore and slit occur, minute leakage is arranged unavoidably, cross high efficiency particulate air filter when air communication and enter clean room at once, thereby fail to reach the high request of clean room air quality.Chinese patent " ZL97235424.7 purifies the flow dispensing net board of unit ventilators " is a kind of purification ventilation unit, just in order to improve air outlet diffusion airflow direction and uniform, fails to solve the leakage and the high cleaning of air-flow.According to the requirement of the national standard " hospital clean operation department construction criteria " of firm execution, requirement in clean operating room must be concentrated ventilation on ceiling above the operating table, just require many high efficiency particulate air filter centralized arrangement.For other industry, when requiring local laminar flow or whole hundred grades, same case is arranged also.When the employing high efficiency particulate air filter of routine exposes to the furred ceiling face as end equipment, can't meet the demands.

The purpose of this utility model is, design and produce a kind of cleaning air-supply smallpox of operating room, high efficiency particulate air filter and leakage preventing layer are integrally combined, air filtration, sealed against leakage and three effects of uniform air-flow decoupling zero with supply air system, solve one by one respectively, make it to form the more complete novel air cleaning system of performance and be arranged on the furred ceiling, satisfy the requirement for height of operating room clean room air cleaning.

The technical solution of the utility model is following realization, a kind of cleaning air-supply smallpox of operating room, comprise plenum chamber, high efficiency particulate air filter, above the plenum chamber air intake, the high efficiency particulate air filter casing is set by airflow direction, built-in high efficiency particulate air filter of casing and wind-mixer, the place is provided with uniform device at the plenum chamber air inlet, and the plenum chamber below is provided with leakage preventing layer and decorative layer;

Plenum chamber can be single air intake, or two air intake, last air intake or side air intake;

Offer the air-flow linked hole at the plenum chamber sidewall, when the plenum chamber of the cleaning of a plurality of operating rooms air-supply smallpox was set up in parallel, linked hole can make in the plenum chamber air-flow even;

Leakage preventing layer is the inferior high efficiency filter material of a flexible low-resistance leakage preventing layer, and the resistance of leakage preventing layer is at 40-80Pa, and resistance is too little, will be not enough to force air-flow evenly to pass through from the gross section; Resistance is too big, then easily makes air-flow not by the leakage preventing layer of filtration is arranged, and passes from the little slit, edge of resistance, strengthens the secondary leak volume at edge; The filter efficiency of leakage preventing layer is in the efficient scope in Asia, promptly for 〉=0.5 μ m particulate, filter efficiency reaches 95%-99%, the efficient height, resistance is leaked effect and is no longer obviously increased, and has increased expense on the contrary, this be as good as with the twice high efficiency particulate air filter, do not have Practical significance; Efficient is low, and resistance is leaked effect and obviously descended, and loses the purpose that resistance is leaked;

In order to beautify and to protect, available orifice plate, screen cloth or ventilated membrane are made decorative layer.

Operation principle of the present utility model and using method be, the cleaning air-supply smallpox of operating room of the present utility model is installed on the hospital operating room clean room air-supply ceiling.For single air outlet, can directly be positioned on high efficiency particulate air filter above the leakage preventing layer, leakage preventing layer air-supply face is twice than the expansion of high efficiency particulate air filter face; For the large tracts of land air outlet, the cleaning air-supply smallpox unit of operating room can be made up setting side by side, its high efficiency particulate air filter casing part can be arranged on the exterior wall place.Behind the high efficiency particulate air filter of extraneous air through the cleaning of operating room air-supply smallpox, its leakage pollution air-flow is through plenum chamber, becomes the pollution behind the mixed diluting, passes through leakage preventing layer again, becomes clean air-flow and enters the workspace.

Whole process obtains more clean gas flow by following four different mechanism effects: 1. the dilution resistance is leaked, rectification, collision, the diffusion of air-flow wind-mixer and plenum chamber porch in the high efficiency particulate air filter casing, make and sew air communication and cross jet blending and disorder, reach the dilution purpose; 2. cross filtration resistance and leak, i.e. the inferior high efficiency filter effect of leakage preventing layer further reduces the air-flow concentration of sewing after the dilution, reaches and filters purpose once more; 3. step-down resistance is leaked, and promptly sews air-flow when leaking to plenum chamber, through slit and sudden enlargement, pressure reduces very big, and during again by leakage preventing layer, pressure reduction is just very little, even the leakage preventing layer frame does not add sealing like this, leak volume is also minimum for the second time, thereby reaches the purpose that the step-down resistance is leaked; 4. intercept resistance and leak, promptly sew air-flow and spill high efficiency particulate air filter and can not head direct for working face, also will be subjected to the obstruct of leakage preventing layer,, gas leakage is still had resistance, still have iris action, reduce leak volume for the second time, reach and intercept resistance and leak purpose even frame has only rigid contact.

The utility model has the advantages that: leakage preventing layer is set, has broken through high efficiency particulate air filter and must be arranged in the terminal traditional mode of air-supply; High efficiency particulate air filter no longer is located in the terminal plenum chamber of air-supply, is convenient to pass through the high efficiency particulate air filter casing on ceiling, and high efficiency particulate air filter is installed separately, detected and keeps in repair, and needn't enter operation in the clean room; The usage quantity of high efficiency particulate air filter can be more minimizing; No longer include high efficiency particulate air filter in the plenum chamber, reduced the plenum chamber structure height, can reduce the building floor height, simplify and install, such as taking to lift plenum chamber, the minimizing expense.If there is not leakage preventing layer, in case sew to some extent at the high efficiency particulate air filter place, will make air-out dust-laden limit increase 475 times, and leakage preventing layer arranged, then this pollution concentration reduces more than 95%, does not sew if do not have, and then indoor cleanliness factor is higher, by theoretical and experimental results show that.Though high efficiency particulate air filter will at the air-supply end, because inferior efficient leakage preventing layer is arranged, have been eliminated and return dirt, laying dust phenomenon near plenum chamber fully now, is not efficiently inferior, then can not accomplish this point; For each single air outlet of turbulent flow clean room, this device is because make big 1-2 times leakage preventing layer of area has been installed under the air port, thereby enlarged 1-2 times of the clean scopes of workspace.When the cleaning air-supply smallpox unit of a plurality of operating rooms was used in combination side by side, the air-flow linked hole that can utilize the plenum chamber sidewall to offer made the interior air-flow of plenum chamber even; This device has tangible modularization, assemblingization characteristics, can comparatively fast be converted into product.Be applicable to the cleaning air-supply smallpox and various hundred grades of districts of the way flow sinuous flow clean room that has clean gas flow to require of hospital operating room clean room.

Below in conjunction with drawings and Examples, the utility model will be further described:

Fig. 1 is the organigram of the cleaning air-supply smallpox of operating room of the present utility model

Fig. 2 is the utility model mounting arrangements use figure in operating room

As seen from Figure 1, the cleaning air-supply smallpox of operating room of the present utility model, comprise plenum chamber, high efficiency particulate air filter, above plenum chamber 3, high efficiency particulate air filter casing 1 is set by airflow direction, built-in high efficiency particulate air filter 2 of casing and wind-mixer 10, the place is provided with airflow uniform distribution device 5 at the plenum chamber air inlet, and leakage preventing layer 4 is set below plenum chamber, the plenum chamber sidewall offers linked hole 7, and the leakage preventing layer below is provided with the decorative layer 6 of orifice plate or ventilated membrane.Leakage preventing layer is the inferior high efficiency filter material of a flexible low-resistance leakage preventing layer, is assembled on the T type installation frame, and the resistance of leakage preventing layer is at 40Pa-80Pa, and filter efficiency promptly reaches 95%-99% for 〉=0.5 μ m particulate efficient in the efficient scope in Asia.Behind dirtier air process high efficiency particulate air filter, obtain filtering cleaning, a part of leakage pollution air-flow process plenum chamber becomes the pollution behind the mixed diluting, through the step-down obstruct of leakage preventing layer, becomes clean uniform air-flow and enters the workspace again.

As seen from Figure 2, when the cleaning air-supply smallpox use of operating room is set on the ceiling of hospital operating room clean room, owing to must pass the shadowless lamp lamp stand in the middle of the ceiling, can have linked hole 7 to communicate between the plenum chamber by the cleaning air-supply smallpox 8 staggered combinations of four operating rooms, promote that air-flow is even, in the square hole that in the middle of combination, forms, a decorative panel is installed is blocked, open an outer circular hole that is cut in the shadowless lamp bar on the decorative panel 9, pass lamp stand, the ventilation blind area that exists owing to lamp stand is reduced to minimum.And the conventional method of high efficiency particulate air filter on furred ceiling of installing, blind area, square hole place is very big.

Claims (5)

1, a kind of cleaning of operating room air-supply smallpox comprises plenum chamber, high efficiency particulate air filter, it is characterized in that, above the plenum chamber air intake, the high efficiency particulate air filter casing is set by airflow direction, the built-in high efficiency particulate air filter of casing, the place is provided with uniform device at the plenum chamber air inlet, and leakage preventing layer is set below plenum chamber.

2, the cleaning of operating room as claimed in claim 1 air-supply smallpox is characterized in that, leakage preventing layer is the inferior high efficiency filter material of a flexible low-resistance leakage preventing layer, and the resistance of leakage preventing layer is 40-80Pa; The filter efficiency of leakage preventing layer is in the efficient scope in Asia.

3, the cleaning of operating room as claimed in claim 1 air-supply smallpox is characterized in that, is provided with wind-mixer in the high efficiency particulate air filter casing.

4, the cleaning of operating room as claimed in claim 1 air-supply smallpox is characterized in that, the leakage preventing layer below is provided with decorative layer.

5, the cleaning of operating room as claimed in claim 1 air-supply smallpox is characterized in that, offers linked hole at the plenum chamber sidewall.

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