CN103282059A - Method for disinfecting air in an air channel - Google Patents

Abstract

The invention relates to a method and a device for disinfecting the air of an air flow (2) in an air supply channel (1) by means of a non-toxic disinfectant. The disinfectant is atomized and sprayed in a spray direction (31) by means of at least one nozzle (30) of the spray device (3), said spray direction (31) being approximately equal to the direction of the air flow (2). By spraying and thus accelerating the fluid in the area behind the constriction (12), particles can be adsorbed on the inner wall (100) of the air supply channel (1) over the entire length of the air supply channel (1).

Description

Translated fromChinese

用于在空气通道中消毒空气的方法Method for disinfecting air in an air channel

技术领域technical field

本发明公开了一种在空气供给通道中用无毒的消毒剂对空气流的空气进行消毒的方法，所述空气供给通道特别是空调系统的空气供给通道。The invention discloses a method for disinfecting the air of an air stream with a non-toxic disinfectant in an air supply channel, in particular an air supply channel of an air conditioning system.

背景技术Background technique

在最接近的现有技术EP0615603中公开了用于对空调的空气供给通道中的空气进行消毒的方法和装置。借助于喷注装置，无毒消毒剂迎着空气流被喷射到空气供给通道中。In the closest prior art EP0615603 a method and a device for sanitizing the air in the air supply channel of an air conditioner are disclosed. By means of the injection device, the non-toxic disinfectant is injected into the air supply channel against the air flow.

所使用的无毒消毒剂可以杀死真菌、藻类、细菌和类似的生物，并且不仅在空气流本身中有效，而且，因为其附着在空气供给通道的内壁上，可以长时间地对附着在在内壁上的细菌起作用，使细菌不再进入空气流中。The non-toxic disinfectant used kills fungi, algae, bacteria and similar organisms and is effective not only in the air stream itself, but also, because it adheres to the inner walls of the air supply channel, for a long time against the The bacteria on the inner wall work so that the bacteria can no longer enter the air stream.

所公开的方法描述了在喷注装置的区域内对空气的消毒。消毒剂的微粒一方面可以沿空气流方向注入到空气供给通道中，另一方面，微粒通过电离装置电离。迎着空气流的喷射导致在喷嘴的周围形成云，在此微粒的一部分在喷射装置附近被甩向空气供给通道的临近的内壁，并优选堆积在那里。The disclosed method describes the disinfection of the air in the region of the injection device. Particles of the disinfectant can be injected into the air supply channel in the direction of the air flow on the one hand and, on the other hand, the particles are ionized by the ionization device. The spraying against the air flow leads to the formation of a cloud around the nozzle, where a part of the particles is thrown in the vicinity of the spraying device towards the adjacent inner wall of the air supply channel and preferably accumulates there.

通过借助电离装置附加地电离微粒，使注入的微粒带电，由于空气供给通道接地，使微粒向空气供给通道的内壁的方向迅速消散。由此经电离的微粒在出来后不久就在喷嘴区域内沉积在空气供给通道的内壁上，而不再在空气供给通道内流动。因此，在喷注装置的区域内发生在局部局限于喷射位置的空气消毒。与之相关的是微粒在喷注装置附近的沉积受干扰。局部消毒的空气在喷注装置附近被消毒后在空气供给通道中循环且不被进一步消毒，因为微粒被限于空气供给通道范围内。By additionally ionizing the particles by means of the ionization device, the injected particles are charged, and due to the grounding of the air supply channel, the particles dissipate rapidly in the direction of the inner wall of the air supply channel. As a result, the ionized particles deposit on the inner wall of the air supply channel in the region of the nozzle shortly after exiting, and no longer flow in the air supply channel. A locally localized disinfection of the air at the spraying point thus takes place in the area of the spraying device. Associated with this is a disturbance in the deposition of the particles in the vicinity of the injection device. After the locally sterilized air has been sterilized in the vicinity of the injection device, it circulates in the air supply channel and is not further sterilized, since the particles are confined within the air supply channel.

所取得的结果仅在最初和在新设备的情形是令人满意的。经过一定的时间后在空气供给通道中与喷注装置相距不同的距离处形成受扰动的沉积，而这也可以是菌群。The results obtained are satisfactory only initially and in the case of new equipment. Disturbed deposits, which can also be colonies of bacteria, form after a certain time in the air supply channel at different distances from the injection device.

发明内容Contents of the invention

本发明的目的是，提供在空气供给通道中用无毒的消毒剂对空气流的空气进行消毒的方法和装置，该方法和装置能够实现消毒剂微粒几乎在空气供给通道的整个长度延伸上的分布、实现消毒剂微粒尽可能均匀地分布在空气供给通道的内壁上。The object of the present invention is to provide a method and a device for disinfecting the air of an air stream with a non-toxic disinfectant in an air supply channel, which method and device enable the disinfection of particles of the disinfectant almost over the entire length of the air supply channel. Distribution, achieving as uniform a distribution of the disinfectant particles as possible on the inner wall of the air supply channel.

本发明的目的以及附加的避免在喷嘴区域内壁上的干扰的局部堆积由本发明的设备和本发明的方法实现。注入导致消毒剂在空气中结合（Verbindung）以及其随后在通道内壁上的沉积。The object of the invention and the additional avoidance of disturbing local accumulations on the inner wall in the region of the nozzle are achieved by the device according to the invention and the method according to the invention. The injection leads to airborne binding (Verbindung) of the disinfectant and its subsequent deposition on the inner walls of the channel.

在优选的实施例中，所注入的消毒剂具有保持的（retensiv）特性，这使得消毒剂在整个通道中分布，因而能够实现对所有内壁的消毒。In a preferred embodiment, the injected disinfectant has retensiv properties, which allow distribution of the disinfectant throughout the channel, thus enabling disinfection of all inner walls.

在所进行的测试的结果中，空气在通道中比消毒剂微粒移动的速度快几倍（约5-6倍），消毒剂微粒由于其惯性附着在通道内壁上、再被空气流夹带并重新附着在其它位置。这个过程可以重复进行，其能实现对通道内壁的足够完全的润湿和灭菌。In the results of the tests carried out, the air moves in the channel several times faster (about 5-6 times) than the disinfectant particles, which due to their inertia adhere to the inner walls of the channel, are entrained by the air flow and re- attached to other locations. This process can be repeated, which achieves a sufficiently complete wetting and sterilization of the inner walls of the channel.

由于电离或空气分子的静电荷，涉及到了所有微生物。另一方面，要避免形成臭氧，由于臭氧破坏消毒剂或其组份。All microorganisms are involved due to ionization or electrostatic charge of air molecules. On the other hand, the formation of ozone is to be avoided since it destroys the disinfectant or its components.

附图说明Description of drawings

在下面将参照附图描述本发明的优选实施例。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

图1示出了空气供给通道的示意图。Figure 1 shows a schematic diagram of the air supply channel.

图2示出了弯曲的空气供给通道的截面的示意图，以及Figure 2 shows a schematic diagram of a section of a curved air supply channel, and

图3示出了笔直的空气供给通道的示意图，该空气供给通道具有用于操纵空气流的挡板。Figure 3 shows a schematic view of a straight air supply channel with baffles for manipulating the air flow.

其中，附图标记说明如下：Wherein, the reference signs are explained as follows:

1  空气供给通道1 air supply channel

100  内壁100 inner wall

2  空气流（箭头）2 Air flow (arrows)

3  喷注装置3 Injection device

30  喷嘴30 nozzles

31  喷注方向（箭头）31 Injection direction (arrow)

4  流传感器4 flow sensor

5  挡板5 baffles

7  电线7 wires

8  控制装置8 control device

9  管道9 pipes

10  泵10 pumps

11  容器11 containers

12  缩窄部12 constriction

13  最大横截面面积。13 Maximum cross-sectional area.

具体实施方式Detailed ways

图1示出了空气供给通道1的一部分，其中，空气流2用箭头2表示。流传感器4和喷注装置3在流动方向2上依次嵌入在空气供给通道1，喷注装置3具有用于使消毒剂雾化和喷射消毒剂的至少一个喷嘴30。在空气供给通道1的进一步延伸中，可以提供在这里未示出的、其它喷注装置3。这里描述的方法和装置尤其可以应用于空调系统中。FIG. 1 shows a part of anair supply channel 1 , wherein anair flow 2 is indicated by anarrow 2 . Aflow sensor 4 and aninjection device 3 , which has at least onenozzle 30 for atomizing and spraying the disinfectant, are embedded successively in theair supply channel 1 in theflow direction 2 . In a further extension of theair supply channel 1 ,further injection devices 3 , not shown here, can be provided. The methods and devices described here are particularly applicable in air conditioning systems.

这些元件通过电线7与控制装置8相连接。具有至少一个喷嘴30的喷注装置3与管道9连接，管道9引导至泵10，泵10将溶解在水中的消毒剂从容器11泵送到至少一个喷嘴30。当空气流2减小到低于某一阈值时，流传感器4可以关停泵10。此外，泵送操作可被调整到与空气流通量

相匹配。These elements are connected to acontrol device 8 viaelectrical lines 7 . Theinjection device 3 with at least onenozzle 30 is connected to a pipe 9 leading to apump 10 which pumps disinfectant dissolved in water from acontainer 11 to the at least onenozzle 30 . Theflow sensor 4 may shut down thepump 10 when theair flow 2 decreases below a certain threshold. In addition, the pumping operation can be adjusted to the air flow rate

match.

由至少一个喷嘴30生成的消毒剂气雾由大小约为50μm的微粒组成，其在空气流2的方向上沿喷注方向（31）喷注。通过在空气供给通道1内在空气流2的方向上的这种喷注，在微粒沉积在内壁100上之前，微粒可继续通过空气供给通道1、最好通过整个空气供给通道1被输送，微粒在内壁100上施展更长时间的消毒作用。The disinfectant mist generated by the at least onenozzle 30 consists of particles with a size of approximately 50 μm, which are injected in the direction of theair flow 2 in the injection direction ( 31 ). Through this injection in theair supply channel 1 in the direction of theair flow 2, the particles can be conveyed further through theair supply channel 1, preferably through the entireair supply channel 1, before they are deposited on theinner wall 100, where the particles are On theinner wall 100, the disinfection effect is performed for a longer period of time.

在流体加速后面的区域、在较低的流速但较高的压力占主导的位置进行喷注是有利的。It is advantageous to inject in the region behind fluid acceleration, where lower flow rates but higher pressures prevail.

图1中喷注装置3被设置成使空气流2的一部分被遮蔽，从而在缩窄部12中导致较高的流速。如从文丘里（Venturi）管已知的，在空气供给通道1的缩窄部12与具有最大的横截面面积的区域13之间压力差占主导。In FIG. 1 theinjection device 3 is arranged such that a part of theair flow 2 is shielded, resulting in a higher flow velocity in theconstriction 12 . As is known from the Venturi tube, a pressure difference prevails between theconstriction 12 of theair supply channel 1 and theregion 13 with the largest cross-sectional area.

在缩窄部12的区域，消毒剂通过喷嘴30被雾化喷注，从而微粒由于高流速而随空气流被夹带经过大的距离。高流速阻止了微粒迅速吸附在空气供给通道1的内壁100上。In the region of theconstriction 12 , the disinfectant is atomized and sprayed through thenozzle 30 , so that the particles are entrained with the air flow over a large distance due to the high flow velocity. The high flow rate prevents particles from quickly adsorbing on theinner wall 100 of theair supply channel 1 .

图2中所示的空气供给通道1的弯曲部导致流体加速，其中在弯曲部的较窄半径的一侧，在弯曲部的出口区域，较高压力p1占主导。在缩窄部12在较大半径的一侧的压力p2小于压力p1，且相应的空气流2的高流速在这一位置上出现。高流速携带被雾化的消毒剂微粒，由此使得在远离喷注装置3的区域内也能达到所希望的消毒剂分布。通过喷注装置3在缩窄部12的区域的这种设置确保了微粒在吸附在内壁100上之前大致均匀地分布在空气供给通道1中。The bend of theair supply channel 1 shown in FIG. 2 results in an acceleration of the fluid, wherein on the side of the narrower radius of the bend, in the region of the outlet of the bend, a higher pressure p1 prevails. The pressure p2 on the side of the larger radius of theconstriction 12 is lower than the pressure p1, and a correspondingly high velocity of theair flow 2 occurs at this point. The high flow velocity entrains the atomized disinfectant particles, so that the desired distribution of the disinfectant is also achieved in regions remote from theinjection device 3 . This arrangement of theinjection device 3 in the region of theconstriction 12 ensures an approximately uniform distribution of the particles in theair supply channel 1 before they are adsorbed on theinner wall 100 .

在进一步的实施例中，使用设置在空气供给通道1的横截面内的挡板5，该实施例能够实现消毒剂在空气供给通道1的整个长度上沉积。这在图3中示意性地示出。挡板5在空气供给通道1中形成一缩窄部12，并迫使空气流2朝向通过缩窄部12的方向，在此也导致pl与p2之间出现压力差。在挡板5后喷注通过至少一个喷嘴30的朝向流体下游进行，从而使雾化的消毒剂沉积在空气供给通道1的广大的范围内。本实施方式中，挡板5也可以省略。In a further embodiment, usingbaffles 5 arranged in the cross-section of theair supply channel 1 , this embodiment enables deposition of the disinfectant over the entire length of theair supply channel 1 . This is shown schematically in FIG. 3 . Thebaffle 5 forms aconstriction 12 in theair supply channel 1 and forces theair flow 2 in the direction through theconstriction 12, here also causing a pressure difference between p1 and p2. The injection takes place downstream of the at least onenozzle 30 towards the flow behind thebaffle 5 , so that the atomized disinfectant is deposited over a wide area of theair supply channel 1 . In this embodiment, thebaffle 5 may also be omitted.

若要加湿空气，则可以在空气供给通道中合适的位置上使水蒸发，水的量借助于湿度传感器由控制装置8控制。优选地，添加同一种消毒剂到水中，以防止引入真菌或藻类等。If the air is to be humidified, water can be evaporated at suitable points in the air supply channel, the amount of which is controlled by thecontrol device 8 by means of a humidity sensor. Preferably, the same disinfectant is added to the water to prevent the introduction of fungi or algae etc.

由于空气流从空气供给通道1最终达到工作或生活空间，该消毒剂应满足严格的健康控制要求。它不应该包含汞、苯酚、或类似的物质并且不应含酒精。Since the air flow from theair supply channel 1 eventually reaches the working or living space, the disinfectant should meet strict health control requirements. It should not contain mercury, phenol, or similar substances and should not contain alcohol.

举例来说，可使用包括乳酸、维生素C和柠檬酸的生物杀灭剂产品，作为优选的用于本发明的方法和装置的消毒剂，所述生物杀灭剂产品可依申请人的商标“OLLOSTAT”而获得。这种消毒剂由瑞士联邦公共卫生部批准作为消毒剂使用。By way of example, biocide products including lactic acid, vitamin C and citric acid, available under the applicant's trademark " OLLOSTAT". This disinfectant is approved for use as a disinfectant by the Swiss Federal Ministry of Public Health.

Claims (10)

1. One kind in air feed path (1) with the air method of disinfecting of nontoxic disinfectant to air flow (2), this air feed path (1) is the air feed path of air conditioning system particularly,

   It is characterized in that,

   Make described disinfectant be atomized into microgranule and also pass through at least one nozzle (30) of injection device (3) along the described microgranule of injection direction (31) spray, wherein said injection direction (31) is approximately equal to the direction of described air flow (2), and the Particle Distribution of described disinfectant can make described microgranule be adsorbed on the inwall (100) in the whole length of described air feed path (1) subsequently in described air flow (2) thus.
2. One kind in air feed path (1) with the air method of disinfecting of nontoxic disinfectant to air flow (2), this air feed path (1) is the air feed path of air conditioning system particularly, wherein, make air ionization in described passage, at least make described airborne sterilization microgranule charged, and make described conduit wall remain on earth potential, thereby described charged corpuscle is deposited on the described conduit wall more quickly

   It is characterized in that,

   Make described disinfectant be atomized into microgranule and also spray described microgranule by at least one nozzle (30) of injection device (3) along injection direction (31), wherein said injection direction (31) is approximately equal to the direction of described air flow (2), and the Particle Distribution of described disinfectant makes described microgranule be deposited on the inwall (100) in the whole length of described air feed path (1) subsequently in described air flow (2) thus.
3. 3. the method for disinfecting air according to claim 1 is characterized in that, the disinfectant injected shows as maintenance.
4. 4. according to the method for each described disinfecting air in the claim 1 to 3, it is characterized in that, described injection occurs in the zone of narrowing portion (12) back, thereby fluid is accelerated, wherein, the pressure (p1) after described fluid accelerates is greater than the pressure (p2) in described narrowing portion (12) zone.
5. 5. according to the method for claim 3 or 4 described disinfecting airs, it is characterized in that, realize in the described air feed path (1) that by described injection device (3) is arranged on described fluid accelerates.
6. 6. according to the method for claim 3 or 4 described disinfecting airs, it is characterized in that, realize that by the bending section of described air feed path (1) described fluid accelerates, wherein, described injection device (3) is arranged on the less side of radius in the exit region of bending section.
7. 7. according to the method for claim 3 or 4 described disinfecting airs, it is characterized in that described fluid accelerates to realize by the baffle plate (5) that is arranged in the described air feed path (1).
8. 8. according to each described method in the aforementioned claim, it is characterized in that adopt the biocide product as disinfectant, described biocide product especially comprises lactic acid component, vitamin C and citric acid component.
9. 9. be used for the device according to each described method disinfecting air of aforementioned claim, it is characterized in that, at described injection device (3) at least one nozzle (30) is set, provides disinfectant from container (11) for described injection device (3) by pipeline (9) and pump (10).
10. 10. device according to claim 9 is characterized in that, controls, changes atomizing and the emitted dose of described disinfectant via electric wire (7) by control device (8).

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