CN206338863U

CN206338863U - Low noise block air cleaning system

Info

Publication number: CN206338863U
Application number: CN201621439915.3U
Authority: CN
Inventors: 殷晓冬
Original assignee: 殷晓冬
Current assignee: Langmai Technology Co., Ltd
Priority date: 2016-12-26
Filing date: 2016-12-26
Publication date: 2017-07-18
Anticipated expiration: 2026-12-26

Abstract

The utility model is related to a kind of low noise block air cleaning system, and it includes：For the integral rack of medical air draft fresh air exported after being handled to input fresh air and after air draft and to it；Return air handles air-blow ceiling, and it is used to carry out the fresh air and return air of introducing uniformly mixing, purification filtering and is exported it with weak turbulence form；And return air inlet, it connects in medical room with return air passageway return air is incorporated into return air processing air-blow ceiling.Infection rate after abortion operation can substantially be reduced, substantially reduce energy consumption, and significantly reduce simultaneously the construction cost of operating room, completion time of project (high integration equipment and modularization install significantly reduce construction cost and complexity) and space requirement (without Special machine room, valve it is few and without return air duct), and noise can also be significantly reduced on the premise of the enough air quantity of guarantee.

Description

Low noise block air cleaning system

Technical field

The utility model relates generally to medical ventilation equipment field, in particular to a kind of low noise block air Cleaning system and a kind of corresponding operating room.

Background technology

Nowadays, 25000 or so, existing hospital of China, because about 40% is built in 1980 in these hospitals, its medical bar Part can not meet modern medical service requirement, therefore there is urgent and large-scale improvement, enlarging task.How to reduce reconstruction and expand The expense built, is a significant target.In addition, how the national life and health of medical industry relation, shorten hospital Completion time of project, be also a vital task.

As the requirement to medical environment is improved, medical air cleaning system is also sent out towards high-power, Wind Volume direction Exhibition.However, a key factor for restricting this development trend is maximum noise requirement.According to GB 50333-2013《Hospital is clean Net Surgery Building technology specification》, the noises of I grades of operating rooms should≤51dB (A), the noise of II, III, IV grades of operating rooms should As≤49dB (A).One important sources of the noise of air cleaning system are blower fans, and the noise of blower fan in general and its Power or air quantity are directly proportional.Therefore, just because of this high request to noise so that many is adopted to meet air quantity requirement Exceed maximum allowable noise criteria threshold value with the air cleaning system of high-power blower, thus medical applications can not be put into.Cause How this, reduce noise, one as the research and development of present air cleaning system important on the premise of enough air quantity requirements are ensured Problem.

At present, the medical ventilation equipment of main flow is using unidirectional stream clean technology.Unidirectional stream, also known as " laminar flow ", refers to by sky The air-flow that the direction of air purifying apparatus or clean area is consistent and streamline is almost parallel.The Rule of judgment unidirectionally flowed is：Pass through cleaning The deviation of the streamline and ideal line in area is no more than 14 °.However, newest medical research as shown by data, unidirectional air supply stream operation Room has higher postoperative infection risk.Moreover, the unidirectional stream air cleaning system of the overwhelming majority all uses central air-conditioning pattern, its The disadvantage is that, operation energy consumption is big, pipeline length (airduct, air-conditioning cold water pipe), valve are more, control system is complicated.

In addition, medical treatment air-conditioning system majority is using central fresh air handling (dehumidifying, temperature adjustment) and filtering at present, circulated air is every Between operating room all individually handle, processing mode is divided into " primary retirn air " or " first and second return air "." primary retirn air " refers to operation The processing such as the Cycle Unit that room return air is all mixed and fed into required fresh air is dehumidified, temperature adjustment and filtering；" first and second return air " Refer to a part of return air of operating room and required fresh air be mixed and fed into after the surface cooler of Cycle Unit is dehumidified again with residue Return air mix and carry out temperature adjustment and filtering etc. processing." primary retirn air " simple system, but all return air are all through Cycle Unit Machine dewpoint temperature (usually less than 16 DEG C) is reached after dehumidifying, therefore also needs heating to reach wind pushing temperature, so as to cause " cold ", " heat " offset, and have not only wasted cold but also consumption of calorie, very not energy-conservation." first and second return air " system can reach the effect of energy-conservation Really, but in order to realize to automatically control increase automatic regulating valve and executing agency are needed, causes in actual applications often fault rate High, debugging difficulty is big, causes the system Difficulty.

In addition, being then delivered back into again in air circulation system, it is necessary to fresh air is sufficiently mixed with the return air through processing In room.If mixing is uneven, the air quality of output wind will be directly affected, such as the oxygen content of local output wind is relatively low Or temperature is higher.But fresh air by processing such as dehumidifying, temperature adjustment humidification and purifications than return air due to often having considerably higher Pressure head (or blast) and correspondingly there is more high wind speed, therefore when directly the different fresh air of blast and return air are mixed, Uniform mixing difficult to realize.And if the two mixed in advance in preposition pipeline, then one needs longer mixing duct, two Carry out high-head fresh air and tend to interfere with the forward flow of low-head circulated air, or even flow backwards low-head circulated air, that is, it is so-called to occur " gas is blocked up " phenomenon.Therefore, in the prior art, general fresh air and the circulated air for avoiding directly merging that transmission pressure head differs greatly as far as possible Conveyance conduit, but two conveyance conduits are remerged after their pressure head is adjusted first, but this also causes significantly The cost of raising.

The technological trend of current air cleaning and conditioning system is developed to the direction of energy-conservation, simple system, convenient operating maintenance.

Utility model content

From prior art, task of the present utility model is to provide a kind of low noise block air cleaning system, profit Use the system, can substantially reduce infection rate after abortion operation, substantially reduce energy consumption, and significantly reduce simultaneously operating room construction cost, Completion time of project (high integration equipment and modularization, which are installed, significantly reduces construction cost and complexity) and space requirement are (without special Computer room, valve are few and without return air duct), and noise can also be significantly reduced on the premise of enough air quantity are ensured.

According to the utility model, the task is solved by a kind of low noise block air cleaning system, the system bag Include：

The integral rack of medical air draft fresh air, including

First rack, it has：

The air draft entrance of air draft is treated for introducing；

The wind exhausting outlet of air draft is treated for discharging；

Air exhaust passage, air draft entrance is connected and treat air draft for guiding by it with wind exhausting outlet；

Exhaust fan, it is arranged between air draft entrance and wind exhausting outlet that air draft will be treated from row in air exhaust passage Wind entrance is guided to wind exhausting outlet；

Air draft filtering module, it is arranged in before exhaust fan to carry out purification filtering to air draft；

Heat reclamation device, it is arranged between exhaust fan and wind exhausting outlet in air exhaust passage, the heat reclamation device Including plate type heat exchanger for the used heat or useless cold in recovery air draft；

Fresh air inlet for introducing fresh air, the fresh air inlet is connected with plate type heat exchanger is changed for absorbing by board-like The used heat or useless cold that hot device is collected from air draft；

Fresh air pretreatment device, it is arranged in fresh air inlet and sentenced for being pre-processed to fresh air；

First fresh air channel, fresh air inlet is connected fresh air being directed to from fresh air inlet by it with the second rack Two racks；

Fresh air air intake blower fan, its be arranged in the first fresh air channel on fresh air flow direction after heat reclamation device with For by the rack of Leads to new breeze first；And

Preheater, it is arranged in the first fresh air channel before fresh air air intake blower fan；

And

Second rack, it has：

Fresh air is exported, and it is used to send out fresh air；

Second fresh air channel, the first fresh air channel is connected to guide fresh air from the first rack by it with fresh air outlet To fresh air outlet；

Air cleaning unit, it includes the fresh air terminal filter for being arranged in fresh air exit；

Idle call indoor set, it includes the dehumidifier, heater and humidifier being arranged in the second fresh air channel；

Idle call outdoor machine, it includes digital variable volume direct-expansion type air-cooled unit for dehumidifier cooling；And

Fresh air air-out blower fan, it is used to export fresh air by fresh air discharges from the second rack；

Return air handles air-blow ceiling, and the air-blow ceiling is used to being arranged on the roof in medical room and passing through fresh air Pipeline is connected for introduction to fresh air with the fresh air outlet of the integral rack of medical air draft fresh air, and the air-blow ceiling has：

Static pressure chamber, it is used to mix fresh air and return air；

Blower is oriented, the orientation blower is arranged in static pressure chamber and connected with fresh air pipeline, wherein the orientation Blower has the wind pushing hole of dorsad circulated air processing unit so that the fresh air sent out by wind pushing hole is by the wall of air-blow ceiling Equably mix to form circulated air with return air after portion's bounce-back；And

Circulated air processing unit, it has the housing for being used for isolating with static pressure chamber, and the circulated air processing unit has：

Multiple blower fan filtering units, its circulated air entrance is connected with static pressure chamber and the outlet of its circulated air is directed at air-blow ceiling Circulated air that filter layer is mixed for introduction to return air and fresh air and purification filtering is carried out to circulated air and will be purified The circulated air of filtering transfers to the conveying of air-blow ceiling filter layer direction；

Air-blow ceiling filter layer, it is used to carry out purification filtering to the circulated air exported by blower fan filtering unit so that warp The circulated air of purification filtering in the form of weak turbulent flow to be input into medical room；And

Return air inlet, it connects with medical room and connects to take up a job as a doctor return air with static pressure chamber by return air passageway Room is treated to be incorporated into the static pressure chamber of air cleaning system.

Following advantages are at least had according to air cleaning system of the present utility model：(1) this air cleaning system have compared with High integration, its primary clustering is the integral rack of medical air draft fresh air and return air processing air-blow ceiling, wherein integral rack is integrated The purification filtering of fresh air, dehumidifying/humidifying, temperature adjustment function and the purification function of air draft, and return air processing air-blow ceiling is integrated The purification filtering of return air, the uniform mixing of fresh air and return air and filtration, purification function, and the two integrated packages can be real Apply for finished product or can the simple assembled semi-finished product in scene, therefore this air system allows modularization to install, such modularization peace Dress can be with very fast and be readily achieved, so as to greatly simplify installation cost and shorten building time；(2) this air is net The two critical pieces of change system are compact finished product, therefore they do not need Special machine room, but can be according to hospital conditions Place in place (such as in dirt passage), and the pipeline between them can set extremely short, especially return air Passage can be realized using passageway, and be handled because return air processing function has been integrated with return air in air-blow ceiling, therefore Return air processor need not be placed in return air passageway, without setting special return air duct, therefore this air cleaning system wherein The requirement united to space is relatively low；(3) air cleaning system of the present utility model is realized while enough air quantity are ensured Low noise, it is ensured that comfortable and up to standard medical environment, following original discovery of the principle based on the present inventor of its noise suppressed： Multiple blower fan filtering units (Fan Filter Unit, FFU) are used in parallel, it is possible to achieve enough air quantity simultaneously ensure low noise, this It is because the noise produced by multiple blower fan filtering units is additive noise, and is the power for realizing multiple blower fan filtering units The single blower fan filtering unit that (or draught capacity) is used is difficult to select suitable direct current generator, wherein current unit most strong wind Measure as 3000m³/ h, used actual air volume is 2000m³/ h, and must ensure that blower press is 210-290Pa so that unit Noise is higher, therefore the multiple blower fan filtering units of use will be incited somebody to action compared with using the single blower fan filtering unit for realizing equal air quantity Substantially reduce noise；(4) air cleaning system is utilized, infection risk can be effectively reduced, because, according to inventor Research find, one-way flow wind devices cause high infection rate main reason is that, its air cleaner is (for example HEPA, High Efficiency Particulate, high efficiency particulate air filter) although micro- life such as fungi, bacterium can be trapped effectively Thing, but in actual use, filter turns into the hotbed for taking and breeding microorganism in itself, and due to unidirectional air supply stream The air-out direction of equipment is generally fixedly directed at operating table so that be easy to directly blow the bacterium in filter layer by one-way gas flow Operating table, such as operation technique position are sent to, so as to cause postoperative infection；And the air cleaning system in the application uses weak rapids Flow Technique, due to the direction randomness of weak turbulent flow, even if therefore the air-out direction of blowing device is directed at operating table, by filter layer In bacterium be directly blown into the probability of operating table and can also substantially reduce, so as to be effectively reduced postoperative infection risk；(5) utilize The air cleaning system, can greatly save electric energy, because, found according to unique insight of inventor, it is only necessary to Complete dehumidifying, temperature adjustment and purified treatment is carried out to fresh air, and return air is only needed to carry out purified treatment, just can be by medical treatment The air quality in room is maintained at preferable level, because increased hot humidity load (including the latent heat due to indoor occupant operation And sensible heat) only (it can for example increase 150-200m by marginally increasing resh air requirement completely³/ h) offset, without right Return air is dehumidified and temperature adjustment；So, not only save for being dehumidified to return air, the electric energy of temperature adjustment, and due to Dehumidification process is transferred completely into the Fresh air handing device of the integral rack of fresh air air draft and removed without being performed in return air processor Wet function, it is thus also avoided that the drawbacks of " cold and hot to offset " in primary retirn air, improves temperature control efficiency；In addition, adjustable using rotating speed Brushless DC blower can save 30% electric energy compared with using AC blower fan, and adjust air quantity with passing through frequency conversion stepping Alternating current generator compare, just can infinitely adjust air quantity by adjusting the rotating speed of direct current generator, simple system, it is easy to use simultaneously And reduce investment outlay；(6) using according to air cleaning system of the present utility model, it is possible to achieve blast is different and thus wind speed is different Fresh air and return air uniform mixing, its based on principle be that blast and the higher fresh air of wind speed are filled in the processing of dorsad circulated air Certain distance is transmitted on the direction put and after the bounce-back of wall portion, its blast and wind speed have been attenuated to proper level, this Shi Zaiyu return air is mixed, and more uniform mixing is easily achieved, the circulated air being then uniformly mixed by fresh air and return air It is input into circulated air processing unit, can be directly output in medical room after filtering again；Air of the present utility model is net Change system is without special valve, executing agency and complicated control flow, and its control flow is simple, with low cost and mixes Effect is good.

Herein, it is noted that the weak turbulent flow (also known as low turbulent flow) used in the utility model refers to, the turbulence level of air-flow (or turbulivity, i.e. air velocity are relative to the measurement that average value is fluctuated, i.e. relative standard deviation) is 5% to 20%.In addition, disorderly Mobility<5% is unidirectional stream or laminar flow, turbulence level>20% for turbulent flow or turbulent flow (referring to DIN：DIN1946-4：2008).

Provided in a preferred scheme of the present utility model, the multiple blower fan filtering unit is four blower fan filtering lists Member, and each the noise figure of blower fan filtering unit is selected to be less than equal to 45dB., can be preferably by the preferred scheme Realize the air quantity requirement of I grades of operating rooms and while meet its noise requirements (≤51dB).

Provided in an expansion scheme of the present utility model, the filter of the multiple blower fan filtering unit includes wind Mechanical, electrical machine and noise elimination spiral case.By the expansion scheme, the mechanical, electrical pole of circulated air apoplexy, the noise of air-flow can be substantially reduced, so Afterwards again by ceiling filtration layer, the secondary filter of such as HEPA efficient filters, to reach very high purification filtering effect.

Provided in a preferred scheme of the present utility model, the wall portion of static pressure chamber is provided with porous muffler plate, and Silencer is disposed with fresh air pipeline.By the preferred scheme, the noise of air cleaning system can be further reduced, so that Build more comfortable medical environment.

Provided in another preferred scheme of the present utility model, the lower end for handling air-blow ceiling in return air is disposed with enclosing, For handling return air the air-flow progress water conservancy diversion of air-blow ceiling output.The highly preferred of the enclosing is 450mm.It is preferred by this Scheme, can be delivered to operating table working face in the case of relatively low wind speed, such as 0.24m/s by purify air.

Provided in another preferred scheme of the present utility model, the low noise block air cleaning system includes two Return air path, each return air path includes multiple return air inlets, and the return air inlet is arranged in operating table both sides parallel to ground, each to return Wind path footpath supplies the return air amount into 50% respectively, wherein the return air wind speed of the return air inlet is controlled as being less than or equal to 1m/s.It is logical Cross the preferred scheme, it is possible to use two return air inlets are arranged in two return air passageways that existing operating room generally has, thus with list Individual return air inlet is compared to reduction return air wind speed, so as to reduce noise.

Provided in an expansion scheme of the present utility model, the medical room includes：It is operating room, public ward, new Raw youngster ward, central supply room and ICU wards.Pass through the expansion scheme, it is possible to achieve the desired air in a variety of medical rooms Cleanliness factor.Other medical rooms or require similar air purity room be also it is contemplated that.

Provided in another expansion scheme of the present utility model, the first rack also enters including being arranged in fresh air inlet with fresh air Chemical filtering module between wind blower fan to fresh air for carrying out chemical filtering, wherein during the mistake chemical filtering module includes Imitate filter layer.In addition, the fresh air pretreatment device being arranged at fresh air inlet can also include thick effect filter layer and medium air filtration Layer.By the expansion scheme, the bulky grain of 2.5 μm in air and 10 μm can be filtered first and chemical pollutant is reduced (such as NO_x、SO_x、NH₃And TVOC) concentration, so as to promote the follow-up fine filtering to fresh air.The chemical filtering module example Such as it is tubular structure, built-in multiple formulations active carbon filler.

Provided in a preferred scheme of the present utility model, adjust the thickness of the air-blow ceiling filter layer and/or send The pitch of the folded filter paper of wind smallpox filter layer and change air supply velocity so that the fresh air and return air inputted is with weak turbulent flow shape Formula is entered in medical room.By the preferred scheme, weak turbulent flow evenly with stabilization can be formed with low cost.This be because For although the ceiling filtration layer used in the utility model is taken due to the random of the filter opening in its filtering material (such as filter paper) To, inherently with make circulated air turn into weak turbulent flow effect, but by adjust the air-blow ceiling filter layer thickness and/ Or the pitch of the folded filter paper of air-blow ceiling filter layer, the low turbulent flow to be formed can be made more to stablize and uniform, so as to enter one Step reduction infection risk.

Provided in another preferred scheme of the present utility model, fresh-air fan and/or blower fan filtering unit and/or air draft wind Machine is equipped with brshless DC motor, wherein the rotating speed of the brshless DC motor can be adjusted infinitely.By the preferred scheme, The energy-saving effect of brshless DC motor can be realized and freely adjusting for resh air requirement, return air amount and exhaust air rate is realized.

Provided in another preferred scheme of the present utility model, air cleaning system is configured as according to the clean of medical room Cleanliness requires the rotating speed of the brshless DC motor of regulation fresh-air fan and blower fan filtering unit.Pass through the preferred scheme, Ke Yishi Existing different cleaniliness classs, i.e., switch between the medical room (such as different operating room grades) of different purposes, to meet difference The purity requirements in medical room.

Provided in another preferred scheme of the present utility model, the medical room is operating room, and the air is net Change system also includes operating room real-time detecting system, and the operating room real-time detecting system includes temperature monitor, Humidity Detection Instrument, wind speed detector, pressure difference detector and detection of particles instrument, and the air cleaning system is configured as according to being examined The temperature of survey, humidity, wind speed, pressure drop, particle concentration adjust the fresh-air fan and/or return air fan and/or air draft The rotating speed of the brushless DC blower of blower fan, the life-span of filter layer, air quantity and cleanliness factor and regulation digital variable volume are straight swollen air-cooled The cold of unit.By the preferred scheme, the air parameter in operating room can automatically dynamically be maintained into satisfaction corresponding In the range of the requirement of operating room cleaniliness classs and maintain air-conditioning parameter.

Provided in another preferred scheme of the present utility model, fresh air inlet and row in the integral rack of medical air draft fresh air Wind is respectively disposed with gravity self-locking air door in outlet, and the gravity self-locking air door has：

Aerofoil, its size matches with air port；

Trip shaft, it enables aerofoil to be overturn around trip shaft through aerofoil；

Counterweight, it is arranged in one end of the aerofoil so that aerofoil keeps vertical with closing in the case of not by external force Air port；And

Backstop, it is arranged in the top and/or bottom of air outlet to prevent that aerofoil from reversely deflecting.

By the preferred scheme, in the case where no introducing fresh air or discharge treat air draft, it is possible to achieve each air door Self-closed, so as to effectively prevent that pollutant or foreign matter from being polluted or blocked into air channel by air door.On the other hand, only Gear can prevent the reverse deflection of aerofoil.

In addition, foregoing task of the present utility model can also realize that the operating room has basis by a kind of operating room Low noise block air cleaning system of the present utility model.By the operating room, it can equally realize according to the utility model Air cleaning system advantage, i.e. substantially reduction infection rate after abortion operation, substantially reduce energy consumption, and significantly reduce operating room simultaneously Construction cost, completion time of project (high integration equipment and modularization, which are installed, significantly reduces construction cost and complexity) and space requirement (without Special machine room, valve it is few and without return air duct), and can also significantly reduce and make an uproar on the premise of enough air quantity are ensured Sound.

Brief description of the drawings

The utility model is expanded on further with reference to specific embodiment below in conjunction with the accompanying drawings.

Fig. 1 shows the schematic diagram according to low noise block air cleaning system of the present utility model；

Fig. 2A shows the cut-away view according to the integral rack of medical air draft fresh air of the present utility model；

Fig. 2 B show the view from the point of view of the A directions from Fig. 2A of heat reclamation device；And

Fig. 3 shows the schematic diagram according to gravity self-locking air door of the present utility model.

Fig. 4 shows the schematic diagram of the operating room real-time detecting system according to air cleaning system of the present utility model.

Embodiment

Fig. 1 shows the schematic diagram according to low noise block air cleaning system 100 of the present utility model.It should refer to Go out, each component in each accompanying drawing perhaps to show, and be not necessarily in perspective with illustrating and be exaggerated.Each attached In figure, identical reference is equipped with to identical or function identical component.

As shown in figure 1, air cleaning system 100 is high integration, modular, it mainly includes two modules：Doctor With the integral rack 200 (including its digital variable volume direct-expansion type air-cooled unit 111) of air draft fresh air, return air processing air-blow ceiling 103.

The integral rack 200 of medical air draft fresh air is preferably placed in the dirt passage 113 in medical room, because its is compact outer Shape, therefore may be arranged at without influenceing normal pass in the corner of dirt passage 113, it is used to arrange air cleaning so as to save The conventional dedicated computer room of system.But other arrangements are also what is be contemplated that.The integral rack 200 of medical air draft fresh air is configured To introduce fresh air from fresh air inlet 214 (referring to Fig. 2A) and exporting the fresh air of purified filtering, temperature adjustment, damping by fresh air 218 are conveyed to return air processing air-blow ceiling 103 via fresh air pipeline 101 and optional silencer 115.Medical air draft fresh air one Rack 200 is additionally configured to the row of the air draft entrance 203 to introducing integral rack 200 via exhaust duct 102 from exhaust outlet 116 Wind carries out filtering and recuperation of heat and is discharged to outdoor by wind exhausting outlet 216.In addition, also show in Fig. 1 and medical air draft Matching used outdoor machine, the i.e. digital variable volume direct-expansion type air-cooled unit 111 of fresh air one rack 200, it is used for dehumidifying The cooling of device 209.On the further 26S Proteasome Structure and Function details of the integral rack 200 of medical air draft fresh air, Fig. 2A and figure are referred to 2B and its corresponding description, are not just repeated here herein.

Return air processing air-blow ceiling 103 be installed on the roof in medical room and by fresh air pipeline 101 with it is medical The connection of fresh air outlet 218 of air draft fresh air one rack 200 is for introduction to fresh air.It should be pointed out that return air handles air-blow ceiling 103 can both be inlaid in the upper interlayer in medical room, can also be arranged on medical room as conventional air-blow ceiling Ceiling on.The air-blow ceiling 103, which has, includes static pressure chamber 114, and it is used for the fresh air that will be introduced by fresh air pipeline 101 Equably mix and (in this application, circulated with forming circulated air with the return air introduced from return air inlet 110 by return air passageway 112 Wind refers to the mixing of fresh air and return air).Static pressure chamber 114, also known as static pressure space, for example, with certain geometrical shape, for example long The cavity of cube shape, its shape and size should be enough such that fresh air and return air can be mixed thoroughly and uniformly.Air-blow ceiling 103 also have the orientation blower 105 being arranged in static pressure chamber 114, and the orientation blower 105 is connected with fresh air pipeline 101. In the present embodiment, orientation blower 105 be configured to pipeline, but can also be configured in other embodiments other forms, Such as aerofoil with holes, ring pipe with holes etc..What the orientation blower 105 was arranged with dorsad circulated air processing unit 117 Wind pushing hole (not shown) so that the fresh air (being shown in Fig. 1 with to upward arrow) sent out by wind pushing hole can be at by return air Equably mix to form stabilization, uniform circulated air with return air after wall portion (such as top) bounce-back for managing air-blow ceiling 103. The presence of orientation blower 105 makes it possible to make fresh air and return air more in the case where not dramatically increasing the space of static pressure chamber 114 Plus thoroughly and uniformly mix, so as to eliminate in conventional air cleaning equipment to realize the different fresh air of blast and return air The used high cost of uniform mixing and complicated valve system and its executing agency.

Return air processing air-blow ceiling 103 also includes circulated air processing unit 117, and it, which has, is used to isolate with static pressure chamber 114 Housing, so as to prevent the return air without the purification filtering of blower fan filtering unit 104 directly it is defeated by air-blow ceiling filter layer 106 Enter into medical room, influence the effect of return air purification filtering.Circulated air processing unit 117 has that multiple (such as four, be clear Chu Qijian is only to show two blower fan filtering units 104 in Fig. 1；But the blower fan filtering unit 104 of other numbers It is contemplated that) blower fan filtering unit 104, its circulated air entrance 110 is connected with static pressure chamber 114 and its circulated air exports 108 Circulated air that alignment air-blow ceiling filter layer 106 is uniformly mixed for introduction to return air and fresh air and circulated air is carried out The circulated air of purified filtering is simultaneously transferred to the conveying of air-blow ceiling filter layer direction by purification filtering.It should be pointed out that blower fan filtering list Member 104 is modified blower fan filtering unit, and it includes blower fan 107 and noise elimination spiral case (is not equipped with reference, referring to blower fan mistake Filter the line segment part in unit 104), wherein the blower fan filtering unit 104 can not include filter layer, but by the filtering Function is moved to air-blow ceiling filter layer 106., can be with by the repacking, i.e. by removing filter layer and adding noise elimination spiral case By noise reduction 2-3dB (A).The structure of noise elimination spiral case for example can be the coating " noise elimination cotton " (not dust type) on deflector, Deflector is arranged in noise elimination spiral case.

In the utility model, through experimental test, sound pressure level added value statement is shown in Table 1 after noise source superposition, and used in parallel Four noises are respectively that the noise figure of 45dB (A) blower fan filtering unit (Fan Filter Unit, FFU) 104 is shown in Table 2：

Table 1：Sound pressure level added value statement when noise source is superimposed

Table 2：Ambient noise table 1-4 platforms FFU is run simultaneously when

From upper table it is known that running one to four unit noise simultaneously according to the utility model is 45dB's (A) FFU, can be by Noise measarement in 45 to 51dB (A), so as to while different operating room cleanliness factors and air-conditioning requirement is met, expire Foot noise requirements.Because the noise produced by multiple blower fan filtering unit FFU is additive noise (the different number of units wind of operation 1) noise during machine is shown in Table, and is to realize the single blower fan mistake that the power (or draught capacity) of multiple blower fan filtering units is used Such as the noise of filter unit will be much higher than the noise sum of multiple blower fan filtering units, high 5-10 decibels or more, therefore adopt With multiple blower fan filtering units noise will be substantially reduced compared with using the single blower fan filtering unit for realizing equal air quantity.This Outside, in order to further eliminate noise, porous muffler plate can be provided with the wall portion of static pressure chamber 114, and in fresh air pipeline 101 On be disposed with silencer 115.Muffler plate and silencer such as can the low density acoustic material as foam, cork, rubber be made, It can also be made up of high-density sound-proof materials such as metallic plates.In addition it is also possible to behind the fresh air outlet 218 of integral rack 200 Arrange silencer using the means of supplementing out economy as reduction noise on pipeline.

Blower fan filtering unit 104 includes blower fan and noise elimination spiral case (being not equipped with reference), can by the expansion scheme It is then efficient by ceiling filtration layer 106, such as HEPA again to substantially reduce the noise of the mechanical, electrical machine of circulated air apoplexy, air-flow The secondary filter of filter screen, to reach very high purification filtering effect.

Return air processing air-blow ceiling 103 also includes air-blow ceiling filter layer 106, and it is used for by blower fan filtering unit 104 The circulated air of output carries out purification filtering so that the circulated air of purified filtering is input into medical room in the form of weak turbulent flow In.Smallpox filter layer 106 can also preferably use HEPA filters.In addition, preferred in the lower end that return air handles air-blow ceiling 103 Ground is disposed with enclosing 118, for the air-flow progress water conservancy diversion exported to air-blow ceiling 103.The highly preferred of the enclosing be 450mm.By the preferred scheme, can in the case of relatively low wind speed, such as 0.24m/s by purify air be delivered to for example away from Ground 1200mm operating table working face.Enclosing 118 can be made up of transparency glass plate or resin material.

Air cleaning system 100 also include return air inlet 110, its be multiple return air inlets and equipped with medium air filtration layer F7/F9, They connect and connected with static pressure chamber 114 by return air passageway 112 to draw return air from medical room with medical room Enter into the static pressure chamber 114 of air cleaning system 100.In air cleaning system of the present utility model, without using backwind tube Road, but return air is transported in static pressure chamber 114 by return air passageway 112, and all built in current most of operating room There is the return air passageway for laying return air duct, therefore existing return air passageway is directly used in conveying return air, be omitted from laying back The cost of wind pipeline.Moreover, without arrangement return air processor in return air passageway 112, but return air processing function is complete Total transfer is into circulated air processing unit 117.Which greatly simplifies the installation process of air cleaning system 100 and reduce space Demand.

Here, can for example change operating room grade in the following way：Change fresh-air fan (including integral rack 200 fresh air air intake blower fan 208 and fresh air air-out blower fan 213) brshless DC motor rotating speed to adjust resh air requirement (1200m³/h、1000m³/h、800m³/ h), while by air-conditioning outdoor machine (the digital variable volume direct-expansion type supporting with fresh-air fan Air-cooled unit 111) cold it is matched；(I classes operating room is 0.24-0.3m/s, wind to the air supply velocity of air-blow ceiling 103 Measure 8000-10000m³/ h) and/or control operating room minimum rate of ventilation (24 times/h of II classes, 18 times/h, IV class of Group III 12 times/ H), the difference of different stage operating room is met indeed through the model or rotation speed of fan of blower fan filtering unit 104 is changed Purity requirements.Temperature, the humidity of operating room construction system are adjusted simultaneously.

Air-flow direction in low noise block air cleaning system 100 is described below.

On fresh air：First, fresh air is introduced into and passed through from the fresh air inlet 214 of the integral rack 200 of medical air draft fresh air Cross after purification, filtering, temperature adjustment and conditioning and be transported to by fresh air pipeline 101 in return air processing air-blow ceiling 103.Sending In wind smallpox 103, fresh air is transported to static pressure by orienting blower 105 on the dorsad direction of circulated air processing unit 117 In chamber 114, and in time after the bounce-back of the wall portion of air-blow ceiling 103 in static pressure chamber 117 with being introduced from return air passageway 112 Wind is thoroughly and uniformly mixed, and is then input into and is followed in the presence of blower fan filtering unit 104 in mixed uniformly circulated air In ring wind processing unit 117, after the purification filtering of blower fan filtering unit 104, circulated air is by air-blow ceiling filter layer 106 The direction conveying of layer, it is last after the purification filtering of air-blow ceiling filter layer 106 to be entered with weak turbulence form in medical room. From figure 1 it appears that the air stream or circulated air (being represented with reference 112) after purified are with random and unordered direction It is blown near operating table 109, therefore due to the direction randomness of weak turbulent flow, even if therefore by the air-out of air-blow ceiling 103 Direction is directed at operating table 109, and the bacterium in filter layer is directly blown into the probability of operating table 109, especially operative site It can substantially reduce, so as to be effectively reduced postoperative infection risk.

On return air：Air in medical room enters return air passageway through return air inlet 110 (inside setting medium air filtration layer F7/F9) 112, and the static pressure chamber 114 that return air handles air-blow ceiling 103 is entered by return air passageway 112, with fresh air in static pressure chamber 114 Thoroughly and uniformly mix, and in the blower fan filtering unit 104 and air-blow ceiling filter layer Jing Guo circulated air processing unit 117 Entered after 106 filtration with weak turbulence form in medical room.

On air draft：Treat that air draft is entered in the integral rack 200 of air draft fresh air by exhaust outlet 116 via exhaust duct 102, And there is discharged to outdoor after filtering and recuperation of heat.Air-exhausting function for example in rapid evacuation operating room such as The pharmaceutical gas of anesthetic etc, or for rapid aeration.

Following advantages are at least had according to air cleaning system 100 of the present utility model：(1) this air cleaning system 100 With high integration degree, its primary clustering is that the integral rack 200 of medical air draft fresh air and return air handle air-blow ceiling 103, wherein Integral rack 200 is integrated with the purification function of purification filtering, dehumidifying/humidifying, temperature adjustment function and the air draft of fresh air, and at return air The integrated fresh air of air-blow ceiling and uniform mixing and the filtration, purification function of return air are managed, and the two integrated packages can be embodied as Finished product or can the simple assembled semi-finished product in scene, therefore this air system 100 allows modularization to install, and such modularization is installed Can be with very fast and be readily achieved, so as to greatly simplify installation cost and shorten building time；(2) this air cleaning The two critical pieces of system 100 are compact finished product, therefore they do not need Special machine room, but can be according to hospital conditions Place in place (such as in dirt passage), and the pipeline between them can set extremely short, especially return air Passage can be realized using passageway 112, and handle air-blow ceiling 103 because return air processing function has been integrated with return air In, therefore return air processor need not be placed in return air passageway, without setting special return air duct, therefore this air wherein Requirement of the cleaning system to space is relatively low；(3) air cleaning system 100 of the present utility model is ensureing the same of enough air quantity When realize low noise, it is ensured that comfortable and up to standard medical environment, the principle of its noise suppressed is based on the as follows of the present inventor It is original to find：Multiple blower fan filtering unit (Fan Filter Unit, FFU) 104 are used in parallel, it is possible to achieve enough air quantity are simultaneously Ensure low noise, (specific noise figure is referring to table because the noise produced by multiple blower fan filtering units 104 is additive noise 1) it is, to realize that the single blower fan filtering unit that the power (or draught capacity) of multiple blower fan filtering units 104 is used is difficult From suitable direct current generator, wherein current unit maximum quantity of wind is 3000m³/ h, used actual air volume is 2000m³/ h, And must ensure that blower press is 210-290Pa so that unit noise is higher, therefore using multiple blower fan filtering units with using The single blower fan filtering unit of equal air quantity is realized compared to noise will be substantially reduced, plurality of blower fan used in parallel can be real It is now larger to realize air quantity and run compared with the slow-speed of revolution, fan efficiency may be sacrificed, but greatly reduce noise；(4) it is sharp With the air cleaning system 100, infection risk can be effectively reduced, because, found according to the research of inventor, One-way flow wind devices cause high infection rate main reason is that, its air cleaner (such as HEPA, High Efficiency Particulate, high efficiency particulate air filter) although the microorganisms such as fungi, bacterium can effectively be trapped, in reality During the use of border, filter turns into the hotbed for taking and breeding microorganism in, and going out due to unidirectional streaming wind devices in itself Wind direction is generally fixedly directed at operating table so that be easy to that the bacterium in filter layer is directly blown into operation by one-way gas flow Platform, such as operation technique position, so as to cause postoperative infection；And the air cleaning system in the application uses weak turbulent flow technology, Due to the direction randomness of weak turbulent flow, even if therefore the air-out direction of blowing device is directed at operating table, will be thin in filter layer The probability that bacterium is directly blown into operating table can also be substantially reduced, so as to be effectively reduced postoperative infection risk；(5) air is utilized Cleaning system 100, can greatly save electric energy, because, found according to unique insight of inventor, it is only necessary to new Wind carries out complete dehumidifying, temperature adjustment and purified treatment, and return air is only needed to carry out purified treatment, just can be by medical room Air quality be maintained at preferable level because increased hot humidity load (including the latent heat and aobvious due to indoor occupant operation Heat) only (it can for example increase 150-200m by marginally increasing resh air requirement completely³/ h) offset, without to return air Dehumidified and temperature adjustment；So, not only save for being dehumidified to return air, the electric energy of temperature adjustment, and due to that will remove Wet process is transferred completely into the Fresh air handing device of the integral rack 200 of fresh air air draft and removed without being performed in return air processor Wet function, it is thus also avoided that the drawbacks of " cold and hot to offset " in primary retirn air, improves temperature control efficiency；In addition, adjustable using rotating speed Brushless DC blower can save 30% electric energy compared with using AC blower fan, and adjust air quantity with passing through frequency conversion stepping Alternating current generator is compared, and air quantity just can be infinitely adjusted by adjusting the rotating speed of direct current generator, simple system, it is easy to use and Reduce investment outlay；(6) using according to air cleaning system 100 of the present utility model, it is possible to achieve blast difference and thus wind speed are not With fresh air and return air uniform mixing, its based on principle be that blast and the higher fresh air of wind speed are in the processing of dorsad circulated air Certain distance is transmitted on the direction of device and after the bounce-back of wall portion, its blast and wind speed have been attenuated to proper level, Now mixed again with return air, more uniform mixing is easily achieved, the circulation being then uniformly mixed by fresh air and return air Wind is input into circulated air processing unit 117 again, can be directly output in medical room after filtering；Sky of the present utility model Gas cleaning system 100 is without special valve, executing agency and complicated control flow, and its control flow is simple, with low cost And good mixing effect.

Fig. 2A shows the cut-away view according to the integral rack 200 of medical air draft fresh air of the present utility model.

As shown in Figure 2 A, the integral rack 200 of medical air draft fresh air includes the first rack 201 and the second rack 202.First machine The rack 202 of cabinet 201 and second can both be generated with integrated shaping after can also being formed separately by assembling.

First rack 201 has the wind exhausting outlet for being used for introducing the air draft entrance 203 for treating air draft and air draft is treated for discharging 216.First rack 201 also have air exhaust passage (not shown), its by air draft entrance 203 be connected with wind exhausting outlet 216 with Air draft is treated in guiding, wherein air exhaust passage both can be special pipeline, can also be surrounded by the wall portion of the first rack 201.The One rack 201 also have exhaust fan 204, its be arranged in air exhaust passage between air draft entrance 203 and wind exhausting outlet 216 with For that will treat that air draft is guided from air draft entrance 203 to wind exhausting outlet 216.Exhaust fan 204 is preferably equipped with rotating speed can stepless-adjustment Whole brshless DC motor so that exhaust air rate can be adjusted by adjusting rotation speed of fan, so as to adjust the gas in medical room Pressure, to reach desired pressure difference effect.First rack 201 also has air draft filtering module 220, and it is arranged in air exhaust passage For carrying out purification filtering before arranging to outdoor to air draft before exhaust fan 204, treated for filtering in air draft Microorganism, in order to avoid be directly discharged in environment.

First rack 201 also has heat reclamation device 206, and it is arranged in exhaust fan 204 and air draft in air exhaust passage Between outlet 216.The heat reclamation device 206 includes plate type heat exchanger (or honeycomb heat exchanger) to reclaim in air draft Used heat is useless cold.The plate type heat exchanger is for example including multiple heat exchanger plates 217 for being mutually perpendicular to arrangement so that treat that air draft can Perpendicular to the flowing of fresh air direction (referring to single arrow in Fig. 1) and by the way that heat exchanger plates 217 are by used heat or useless cold pass to fresh air. Heat exchanger plates 117 are for example made up of very thin copper coin, but other good heat conducting materials are also what is be contemplated that.Heat reclamation device 106 enters One step details see Fig. 2 B.

First rack 201 also has the fresh air inlet 214 for being used for introducing fresh air, the fresh air inlet 214 and heat exchanger plates 217 Connection for by Leads to new breeze into heat exchanger plates 217.First rack 201 also has the first fresh air channel (not shown), and it will Fresh air inlet is connected fresh air being directed to the second rack 202 from fresh air inlet 214 with the second rack 202.First fresh air Passage both can be pipe special, can also be surrounded by the wall portion of the first rack.First rack 201 also has fresh air air intake blower fan 208, it is arranged in after heat reclamation device 206 in the first fresh air channel on fresh air flow direction (arrow in referring to Fig. 1) For by the first rack of Leads to new breeze 201.

First rack 201 also has fresh air pretreatment device 205, and it is arranged in fresh air inlet 214 and sentenced for fresh air Pre-processed.Fresh air pretreatment device 205 includes coarse filtration and the medium air filtration layer for being used to filter the bulky grain thing in air.

First rack 201 also has optional chemical filtering module 207, and the chemical filtering module 207 is arranged in fresh air and entered For to fresh air progress chemical filtering between mouth 214 and fresh air air intake blower fan 208.Pass through chemical filtering module 207, it is possible to decrease Chemical pollutant (such as NO_x、SO_x、NH₃And TVOC) concentration, so as to promote the follow-up fine filtering to fresh air.The chemistry Filtering module 207 is, for example, tubular structure, built-in multiple formulations active carbon filler.

First rack 201 also have preheater 212, its be arranged in the first fresh air channel fresh air air intake blower fan 208 it Before, between such as chemical filtering module 207 and fresh-air fan 208.Preheater 212 is preheated to carry out for winter to fresh air Subsequent heating, to complete " isothermal humidification " function.

The second rack 202 is also show in Fig. 2A.Second rack 202 has the second fresh air channel, and it leads to the first fresh air Road is connected fresh air being directed to fresh air outlet 218 from the first rack 201 with fresh air outlet 218.In fig. 2, the first machine 201 the first fresh air channel is connected for defeated by interface channel 221 with the second fresh air channel in the second rack 202 in cabinet Send fresh air.Second rack 202 has air cleaning unit, and it includes the fresh air terminal filter for being arranged in fresh air exit 219, the fresh air terminal filter 219 is used to carry out double purification filtering to fresh air.

Second rack 202 also has idle call indoor set, its dehumidifier 209 for including being arranged in the second fresh air channel, Heater 210 and humidifier 211, wherein dehumidifier 209 e.g. freon direct-evaporation-type surface-cooler (or table is cold Device), it is used to carry out depth dehumidifying to fresh air.Heater 210 is heated to suitably for the air relatively low to the temperature through dehumidifying Temperature with ensure air-supply do not condense, or winter humidification before heating.Heater 210 is, for example, electrical heating wire.Humidifier 211 be, for example, electrode humidifler, and it is used to humidify fresh air.

Second rack 202 also has the idle call outdoor machine for being used for supplying low-temperature receiver, and it includes digital variable volume direct-expansion type wind Cold group 111 (referring to Fig. 1) is for dehumidifier cooling.

Fresh air terminal filter 219 can alternatively have the filter for the particle for being used to filter particle diameter 0.1m to 0.5m Core (not shown).The characteristics of digital variable volume direct-expansion type air-cooled unit is that, in dehumidifying, refrigerant is by directly evaporating and newly Wind direct heat transfer is to complete dehumidification function, and cold adjustable extent is big, and its simple system, effect is good.

Second rack 202 also includes fresh air air-out blower fan 213, and it is used to discharge fresh air from the second rack 102.Fresh air The air intake direction of air-out blower fan 213 both can be perpendicular to fresh air flow direction, can also be parallel to fresh air flow direction.Finally, Second rack 202 also includes fresh air outlet 218, and it is used to discharge fresh air.

The fresh air inlet 214 and wind exhausting outlet 216 of first rack 201 can alternatively have gravity self-locking air door respectively 215 so that in the case where no introducing fresh air or discharge treat air draft, it is possible to achieve the automatic sealing package of each air door 214 and 216 Close, so as to effectively prevent that pollutant or foreign matter from being polluted or blocked into air channel by air door 214 and 216.Gravity self-locking The further detail below of air door 215 will be illustrated in fig. 2b.

In addition, fresh air air intake blower fan 208 and fresh air air-out blower fan 213 are configured with the adjustable brshless DC motor of rotating speed.Such as This one, energy-conservation on the one hand can be realized, because 30% can be saved compared with using AC blower fan using brshless DC motor Electric energy.On the other hand, it is different types of to be adapted to by using the adjustable motor of rotating speed, it is possible to achieve the regulation of resh air requirement Operating room (I classes, II classes, Group III and IV classes), realizes a tractor serves several purposes.The power of separate unit blower fan is, for example, 150-300W, with wind Amount change, its changed power is about 10%.In addition, sacrificial section energy-saving effect is also feasible to reduce the scheme of type. Stepless speed regulation is compared with alternating current generator frequency conversion stepping speed governing, and system is simply too much, so as to reduce control cost.For cleaning The change of degree, can accordingly adjust return air amount (rotating speed for changing return air fan).

In this integral rack 200, the value of the resh air requirement of all kinds of operating rooms for example can be 1200m³/h、1000m³/h、 800m³/ h, fresh air is provided with eliminating the ability of sensible heat in all kinds of operating rooms after cool-down dehumidification.What appropriate increase dehumidified through depth Resh air requirement can eliminate the hot humidity load (including sensible heat and latent heat) in all kinds of operating rooms completely.It therefore, it can operating room " air conditioning function " and " purification function " of " purification air-conditioning " system is performed separately, fundamentally to avoid air cleaning and conditioning system The drawbacks of " cold ", " heat " offset.And this integral rack can also greatly simplify operating room air cleaning and conditioning system, less valve Door number, reduction automatically control difficulty, and its is easy to operate, safeguard simple and good energy-conserving effect.

In addition, in this integral rack, passing through used in parallel, the reality of fresh air air intake blower fan 208 and fresh air air-out blower fan 213 Existing fan pressure head superposition, to solve in integral rack to need high-head technical bottleneck due to multi-functional section.In addition, it is contemplated that Noise when fan parallel-connection is used, silencer 106 is provided with fresh air pipeline 101 or on fresh air pipeline 101.

Depth dehumidifying belongs to cold air distribution, and in addition to slightly reheating measure, the fan temperature rise of circulated air can be reduced The risk of " air-supply condensation ".

In addition, exhaust fan 204, fresh air air intake blower fan 208 and fresh air air-out blower fan 213 can be arranged in noise elimination cavity In (not shown).The noise elimination cavity is located in air exhaust passage, the first fresh air channel and the second fresh air channel respectively, for institute State blower fan and carry out noise reduction.Noise elimination cavity such as can the low density acoustic material as foam, cork, rubber be made, can also be by gold The high-density sound-proof materials such as category plate are made.It arrange silencer to be used as drop on the pipeline after 218 in addition it is also possible to be exported in fresh air The means of supplementing out economy of low noise.

The flow process for treating air draft and fresh air in the integral rack 200 of medical air draft fresh air is illustrated separately below.

Treat that the flow process of air draft is as follows：First, treat that air draft enters the first rack 201 in the presence of exhaust fan 204 Air exhaust passage, and after the purification filtering of air draft filtering module 220 by heat reclamation device 206 and useless cold Or used heat passes to heat exchanger plates 217, heat exchanger plates 217 and then described useless cold or used heat is passed to what is conveyed in heat exchanger plates 217 Fresh air；Then, treat that air draft is discharged from wind exhausting outlet 216.

The flow process of fresh air is as follows：First, fresh air in the presence of fresh air air intake blower fan 208 from the first rack 201 Enter the first fresh air channel of the first rack 201 in fresh air inlet 214, in the purification filtering by fresh air pretreatment device 205 Enter heat reclamation device 206 later and absorb from the used heat or useless cold and heating for treating air draft or cool；Then, fresh air is through can The chemical filtering module 207 of choosing is filtered with undergoing preliminary purification；The fresh air filtered through preliminary purification is by the pre- of preheater 212 The first rack 201 is left after hot and enters the second fresh air channel of the second rack by passage 221, in the second rack 202, Fresh air is at humidification and the fresh air end of the depth dehumidifying, the heating of heater 210 and humidifier 211 of experience dehumidifier 209 respectively The purification filtering of filter 219 is held to leave the second machine by fresh air outlet 218 in the presence of fresh air air-out blower fan 213 later Cabinet 202.

Fig. 2 B show the view from the point of view of the A directions from Fig. 2A of heat reclamation device 206.In fig. 2b, with arrow come table Show the flow direction for treating air draft, and represent with cross spider the flow direction of fresh air.As can be seen that recuperation of heat from Fig. 2 B Device 206 includes multiple heat exchanger plates 217, and the heat exchanger plates 217 are for example mutually perpendicular to arrangement and treat air draft and new to be formed supply respectively The passage that wind passes through, and two kinds of passages do not connect the undesirable mixing to prevent fresh air He treat air draft mutually.Heat exchanger plates 217 are used The used heat or useless cold for treating air draft (see the arrow in Fig. 2 B) passed through in collection from heat exchanger plates 217, and by the used heat or give up The cold fresh air passed into heat exchanger plates 217 (referring to the cross spider in Fig. 2 B).Pass through the heat reclamation device 206, Ke Yishi The used heat or useless cold recycling of air draft are now treated, so as to realize energy-saving effect.Heat exchanger plates 217 for example can be very thin copper coin, but It is that the heat exchanger plates 217 being made up of other Heat Conduction Materials are also what is be contemplated that.

Fig. 3 shows the schematic diagram according to gravity self-locking air door 215 of the present utility model.As shown in Figure 2 A, gravity self-locking Air door 215 is for example arranged in fresh air inlet 214, it is also contemplated that, gravity self-locking air door 215 is arranged in wind exhausting outlet In 216.

Gravity self-locking air door 215 includes aerofoil 301, and its size matches with air port.For example, the size of aerofoil 301 is true It is set to enable and air port, i.e. fresh air inlet 214 is just covered when aerofoil 301 is vertical, realizes sealing effect.Air door can be with It is made up of plastics, timber or other light materials.

Gravity self-locking air door 215 also includes trip shaft 303, and it enables aerofoil 301 around trip shaft through aerofoil 301 303 upsets.

As shown in figure 3, being disposed with counterweight 302 in one end of aerofoil 301, such as lower end so that aerofoil 301 is not by external force In the case of keep vertical to close air port.Counterweight high density material such as can be made of metal.Counterweight 302 is installed in At correct position on aerofoil 301 so that aerofoil 301 when not by external force, i.e. not whne air draft or fresh air under gravity Naturally it is returned at minimum point, i.e. gravitional force minimum, so as to close air port.And when introducing fresh air or discharging whne air draft, Aerofoil 301 fresh air suction or treat air draft thrust under overcome gravity to be overturn around trip shaft 303, so as to produce gap, Enable fresh air or treat air draft by the gap enter air intake vent or from air port discharge (referring to arrow in Fig. 3).Also show in Fig. 3 Backstop 304 is gone out, the backstop 304 can be arranged in the bottom and/or top in air port.By backstop 304, aerofoil can be prevented Counter motion, direction i.e. opposite with air-flow (fresh air, treat air draft) direction of motion are moved.

By gravity self-locking air door 215, in the case where no introducing fresh air or discharge treat air draft, it is possible to achieve each wind The self-closed of door, so as to effectively prevent that pollutant or foreign matter from being polluted or blocked into air channel by air door.

Fig. 4 shows the signal of the operating room real-time detecting system 400 according to air cleaning system 100 of the present utility model Figure.In Fig. 4, operating room real-time detecting system 400 exemplarily includes temperature monitor 401, humidity measurement instrument 402, wind speed Detector 403, pressure difference detector 404 and detection of particles instrument 405, they be respectively configured as detect operating room in temperature, Humidity, wind speed, pressure drop and particle concentration or population.In the present embodiment, operating room real-time detecting system 400 can be with Including wireless transmitting unit 406, it is configured as detected temperature value, humidity value, air speed value, pressure difference wirelessly Value and particle concentration value or population are sent to central controller 407.Central controller 407 is preferably arranged in air cleaning system System 100 in, but can also it is arranged apart with air cleaning system 100 and by wireless or cable with air cleaning system 100 connections and communication.Manually or automatically system is adjusted according to received information for central controller 407, dimension The desired air parameter of all kinds of operating rooms is held, also display and alarm including parameter.Herein, it is noted that although in this reality Apply in example operating room real-time detecting system 300 being shown as and wirelessly communicated with central controller 407, but implement other It in example, can also be communicated, and in other embodiments, can be arranged in operating room less or more by wired mode Many detection means.

Although some embodiments of the present utility model are described in present specification, to this area It is obvious to the skilled person that these embodiments are merely possible to shown in example.It may occur to persons skilled in the art that Numerous flexible program, alternative solution and improvement project and without departing from scope of the present utility model.Appended claims are intended to Scope of the present utility model is limited, and thereby covers method and knot of these claims in itself and its in the range of equivalents Structure.

Claims

1. a kind of low noise block air cleaning system, including：

The integral rack of medical air draft fresh air, including

First rack, it has：

The air draft entrance of air draft is treated for introducing；

The wind exhausting outlet of air draft is treated for discharging；

Exhaust fan, it is arranged between air draft entrance and wind exhausting outlet to treat that air draft enters from air draft in air exhaust passage Mouth is guided to wind exhausting outlet；

Heat reclamation device, it is arranged between exhaust fan and wind exhausting outlet in air exhaust passage, and the heat reclamation device includes Plate type heat exchanger is for the used heat or useless cold in recovery air draft；

Fresh air inlet for introducing fresh air, the fresh air inlet connects to absorb by plate type heat exchanger with plate type heat exchanger The used heat or useless cold collected from air draft；

First fresh air channel, fresh air inlet is connected fresh air being directed to the second machine from fresh air inlet by it with the second rack Cabinet；

Fresh air air intake blower fan, its be arranged in the first fresh air channel on fresh air flow direction after heat reclamation device for By the rack of Leads to new breeze first；And

Preheater, it is arranged in the first fresh air channel before fresh air air intake blower fan；And

Second rack, it has：

Fresh air is exported, and it is used to send out fresh air；

Second fresh air channel, the first fresh air channel is connected fresh air being directed to newly from the first rack by it with fresh air outlet Wind is exported；

Return air handles air-blow ceiling, and the air-blow ceiling is used to being arranged on the roof in medical room and passing through fresh air pipeline Fresh air outlet with the integral rack of medical air draft fresh air is connected for introduction to fresh air, and the air-blow ceiling has：

Static pressure chamber, it is used to mix fresh air and return air；

Blower is oriented, the orientation blower is arranged in static pressure chamber and connected with fresh air pipeline, wherein the orientation air-supply Utensil has the wind pushing hole of dorsad circulated air processing unit so that the fresh air sent out by wind pushing hole is anti-by the wall portion of air-blow ceiling Equably mix to form circulated air with return air after bullet；And

Multiple blower fan filtering units, its circulated air entrance is connected with static pressure chamber and the outlet of its circulated air is directed at air-blow ceiling filtering The circulated air that is mixed for introduction to return air and fresh air of layer and purification filtering is carried out to circulated air and by purified filtering Circulated air transfer to air-blow ceiling filter layer direction conveying；

Air-blow ceiling filter layer, it is used to carry out purification filtering to the circulated air exported by blower fan filtering unit so that purified The circulated air of filtering in the form of weak turbulent flow to be input into medical room；And

Return air inlet, its connected with medical room and by return air passageway connected with static pressure chamber for by return air from medical room Between be incorporated into the static pressure chamber of air cleaning system.

2. air cleaning system according to claim 1, wherein the multiple blower fan filtering unit is four blower fan filterings Unit, and each the noise figure of blower fan filtering unit is selected to be less than equal to 45dB.

3. air cleaning system according to claim 1, wherein the filter of the multiple blower fan filtering unit includes Blower fan, motor and noise elimination spiral case.

4. air cleaning system according to claim 1, wherein the wall portion in static pressure chamber is provided with porous muffler plate, and Silencer is disposed with fresh air pipeline.

5. air cleaning system according to claim 1, encloses wherein being disposed with the lower end that return air handles air-blow ceiling Gear, for handling return air the air-flow progress water conservancy diversion of air-blow ceiling output.

6. the air cleaning system according to one of claim 1 to 5, wherein the low noise block air cleaning system Including two return air paths, each return air path includes multiple return air inlets, and each return air path supplies the return air into 50% respectively Amount, wherein the return air wind speed of the return air inlet is controlled as being less than or equal to 1m/s.

7. the air cleaning system according to one of claim 1 to 5, wherein the medical room includes：It is operating room, common Ward, Neonatal Ward, central supply room and ICU wards.

8. the air cleaning system according to one of claim 1 to 5, wherein the first rack also includes being arranged in fresh air inlet Chemical filtering module between fresh air air intake blower fan to fresh air for carrying out chemical filtering, wherein the chemical filtering module Including medium air filtration layer.

9. the air cleaning system according to one of claim 1 to 5, wherein adjusting the thickness of the air-blow ceiling filter layer And/or the folded filter paper of air-blow ceiling filter layer pitch and change air supply velocity so that the fresh air that is inputted and return air with Weak turbulence form is entered in medical room.

10. the air cleaning system according to one of claim 1 to 5, wherein fresh-air fan and/or blower fan filtering unit And/or exhaust fan is equipped with brshless DC motor, wherein the rotating speed of the brshless DC motor can be adjusted infinitely.

11. air cleaning system according to claim 10, wherein air cleaning system are configured as according to medical room Purity requirements regulation fresh-air fan and blower fan filtering unit brshless DC motor rotating speed.

12. air cleaning system according to claim 11, wherein the medical room is operating room, and the air Cleaning system also includes operating room real-time detecting system, and the operating room real-time detecting system includes temperature monitor, humidity and examined Instrument, wind speed detector, pressure difference detector and detection of particles instrument are surveyed, and the air cleaning system is configured as according to institute The temperature of detection, humidity, wind speed, pressure drop, particle concentration adjust the fresh-air fan and/or return air fan and/or row The rotating speed of the brushless DC blower of wind blower fan, the life-span of filter layer, air quantity and cleanliness factor and the straight swollen wind of regulation digital variable volume The cold of cold group.

13. the air cleaning system according to one of claim 1 to 5, wherein in the new of the integral rack of medical air draft fresh air Gravity self-locking air door is respectively disposed with wind entrance and wind exhausting outlet, the gravity self-locking air door has：

Aerofoil, its size matches with air port；

Counterweight, it is arranged in one end of the aerofoil so that aerofoil keeps vertically closing wind in the case of not by external force Mouthful；And

14. a kind of operating room, it has the low noise block air cleaning system according to one of preceding claims.