CN1194585A - Method for disinfecting the air - Google Patents

Abstract

A method of disinfecting the air and killing air borne bacteria, etc., by creating particles of disinfecting compounds using a heated wick is disclosed. More particularly, this invention relates to a method of generating particles of compounds which are known to kill air borne bacteria when these compounds are dispersed in the air in the form of small particles by generating these particles using a wick which is indirectly heated at near the top. The compositions include glycols selected from the group consisting of propylene glycol, dipropylene glycol, triethylene glycol and mixtures thereof.

Description

The method of disinfecting air

The present invention relates to a heating of a kind of usefulness fuse and produce the method that the sterilization compound particle comes disinfecting air and kills airborne antibacterial.The present invention be more particularly directed to a kind of method that produces compound particle, known these chemical compounds can kill airborne antibacterial being dispersed in the air with short grained form, these granules be indirectly near top or top the heating fuse produce.

The known road of people is fumigated the method for chemical compound with indirect as producing biocide materials for a long time.The example of this based composition and method is disclosed in the U.S. patent 4,745,705.This patent disclosure a kind of usefulness one multi-hole adsorpting core method of carrying insecticide, thereby be about to that this core immerses in insecticide solution and between be connected on the top and be heated adsorbed solution evaporation in atmosphere.This patent openly insecticide be with Dispersion of Particles in air.

Having had a lot of patent disclosures in addition uses the porous core as the device of carrying insecticide.These patents comprise: US5095647, US4663315, US5038394 and US5290546.None discloses these devices and can be used to produce the air sanitizer granule in these patents.

Some air cleaner effects when being sprayed onto in the air, known some diol compound also can be provided.Effective quantity of having found these materials is typically about 5% or more active glycol (3 days US EPA file of JIUYUE in 1980).

The present invention relates to a kind of method of disinfecting air, comprise: be immersed in the part of a porous core in the liquid disinfection compositions and this core top of indirect in air, to produce the granule of described active disinfectant, wherein the particle size that has of at least 90% granule that is produced is not more than 10 microns.

Accompanying drawing is the sketch map of the inventive method equipment therefor.

As noted before, known certain air sanitizer or air freshener must be with certain forms Be present in the air in order to make it that activity be arranged. The applicant believes that medicament must be with the form of particle And/or with himself being attached in the air on the existing particle as on the dust granule, just activity can be arranged. Cause This any can all can with such air sterillization or the cleaning agent of special form preparation by the heating core generator Be used for method of the present invention. Yet, preferably work as these materials and can be created in rapidly small-sized consumption apparatus Use some two alcoholization when in air, forming the particle of aerosol suspension body under the temperature of safe handling Compound is used. Preferred diol materials is propane diols, DPG, triethylene glycol and composition thereof. This Most preferred compound is DPG in a little diol materials.

Because many air cleaner active materials are water miscible, so used diluent water most preferably in the inventive method.Also can use other diluent, solvent and cosolvent, yet we think that highly volatile hydrocarbon solvent has lowered the effect of the inventive method, should avoid in principle.In addition, other volatile material such as spice also should be avoided or with a small amount of application, be less than 15% of total prescription usually.The used formula optimization of the inventive method does not contain spice substantially.

Be applicable in the packing of the inventive method that the concrete concentration of active material can change by being low to moderate 5% in the contained concentrate in the scope up to 100% active village material.Also can comprise a spot of aromatic or spice in this and the air cleaner effect of active component is not had adverse effect.On the contrary, the amount that exists of diluent about 95% when 0% during by 100% active material is changed to about 5% active material along with the amount of active material.The preferable absorbent material is the solvent of active material.For glycols, preferable absorbent is a water.

Refer now to sketch map of the present invention, the present invention includes a shell or casing 10, wherein comprise an opening 20 at top surface.Be positioned at around the opening 20 is a heating element heater 30.This element can be heating element heater such as ring heater, coiling heater or one or more PTC (positive temperature coefficient) heater of any routine.The similar types of heating element heater is not strict for purposes of the invention.As long as heating element heater can arrive the top firing of core 40 temperature of about 50-120 ℃ scope.Heating element heater 30 is connected with a power supply by conductor 70, can be set of cells or household socket.

Core 40 can be made by any conventional material that is used for this type of core.Suitable material comprises porous ceramics core and analog.Suitable core is disclosed among the US4663315, and disclosure is introduced reference.Preferred core is pottery, polyester, compression wood, agglomerating polypropylene and polyethylene, and carbon fiber.

Core 40 places the opening part of casing 50.The opening part that preferred core 40 places casing 50 for the form of sealing in case the liquia air cleaning material 60 of casing 50 can not discharge easily.With core 40 the mode of casing 50 opening parts sealings be use always do not constitute a part of the present invention.

The air freshener granule of the vaporising device of the above-mentioned type generation surprisingly is in the active scope these known detergent material.Having observed the particle size range that has more than 90% in the granule of said apparatus generation is about 0.16-5 micron.The air cleaner agent material is very effective in this particle size range.

Present method of the present invention will be confirmed that these embodiment are only for the purpose of proof rather than as restriction by the following example.

Embodiment 1

Prepare following prescription:

Component % weight

Dipropylene glycol 90

Spice (TBA73299) 10

With the above-mentioned prescription of 45g be put in one have average pore size be 0.7 micron ceramic core the bottle in.About 100 ℃ at the top that then combination of this bottle and core is positioned over heating core in the electric heater unit to temperature.This device is put in a temperature and humidity and is controlled in the room of 22 ℃ and 40% RH.This room is equipped with Met One # 200 a clean room particle collector and Mattson-Garvin 220 seams facing to agar impacting type sampler, is used for measuring the number of bacterial community in a period of time.After about 24 hours, with a kind of airborne antibacterial, Resina garciniae micrococcus lysodeikticus (micrococcus lutens lysodiekticus) is introduced in the room.Measure total granule number and particulate relative size.The decline of bacterial flora number in also measuring during this period of time in addition.A quantity that does not record bacterial community with the contrast room of any generation granule device also has decline.Said apparatus has produced 6.39 hundred ten thousand granules after 24 hours time.The loss in weight of prescription is 1.67g through the above-mentioned time in the bottle.In following table, 10-15 refers to from antibacterial being introduced the room 10-15 minute.The bacterial community number is as follows:

0-5 10-15 20-25 30-35?40-45 50-55

Embodiment 1100000

Comparative Examples 293 183 146 113 77 44

Very clear, this method has only just reduced airborne number of bacteria after the very short time.

Embodiment 2:

Repeat the program of embodiment 1, different be to use following prescription:

Component % weight

2,2'-ethylenedioxybis(ethanol). 10

Deionized water 90

Producing number of particles through 24 hours is 3.1 hundred ten thousand, and the loss in weight is 0.98g.Observe following result.

0-5 10-15 20-25 30-35 40-45 50-55

Embodiment 2 28 10 5524

Comparative Examples 322 256 161 134 110 77

The airborne number of bacteria that remains existence has remarkable minimizing.

Method of the present invention is used for reducing the airborne number of bacteria that indoor environment exists.Because some antibacterial has been notified and causes disease, use the method for the present invention can be with the propagation minimization of some infectious disease.

Claims (10)

1. the method for a disinfecting air, comprise and heat the porous core indirectly, this core has a near top and that is arranged in the thermal source and immerses the bottom of liquid disinfection compositions, the top of core has the granule that enough temperature produce described sanitizing composition like this, then with these Dispersion of Particles in air, wherein the particle size that has of at least 90% the granule that produces is no more than 5 microns.

2. the process of claim 1 wherein core is heated to temperature in about 50-120 ℃ of scope.

3. the process of claim 1 wherein that the liquid disinfection compositions comprises that a kind of glycol is as active disinfectant.

4. the method for claim 3, wherein glycol is selected from: propylene glycol, dipropylene glycol, 2,2'-ethylenedioxybis(ethanol). and composition thereof.

5. the method for claim 3, wherein the liquid disinfection compositions comprises that water is as diluent.

6. the method for claim 3, wherein the liquid disinfection compositions contains the water of two pure and mild about 95-0% of about 5-100%.

7. the method for claim 6, wherein glycol is a dipropylene glycol.

8. the method for claim 7, wherein the liquid disinfection compositions contains the dipropylene glycol of about 10-100% and the about water of 0-90%.

9. the method for claim 3, wherein compositions also comprises and is less than 15% spice.

10. the method for claim 3, wherein compositions does not contain spice substantially.