CN1104259C - Arrangement for evaporating liquid active material - Google Patents
Arrangement for evaporating liquid active material Download PDFInfo
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- CN1104259C CN1104259C CN96180233A CN96180233A CN1104259C CN 1104259 C CN1104259 C CN 1104259C CN 96180233 A CN96180233 A CN 96180233A CN 96180233 A CN96180233 A CN 96180233A CN 1104259 C CN1104259 C CN 1104259C
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- core body
- active substance
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Abstract
The present invention relates to a device for evaporating a liquid active substance 12. A core 7 which is immersed in the liquid active substance 12 and is used for conveying the active substance is arranged in the device, wherein one end of the core extends out of the liquid active substance when the core is immersed in the liquid active substance, and the extending region of the core is provided with a heating device 3.The present invention is characterized in that the configuration of the core enables the liquid active substance 12 not to permeate basically at least along the peripheral surface of the core which is immersed in the liquid active substance; the liquid active substance 12 can basically penetrate the end surface 10 opposite to the extending end; at least in a heating condition, the evaporated active substance 12 is permeable in the area of the heating device. Therefore, the liquid active substance can upward rise into the core uniformly.
Description
The present invention relates to a kind ofly, be used for the device and the manufacture method thereof of evaporating liquid active material shown in the aforementioned part of claim 1 of the present invention.
By German patent DE 3737272A, known this class device.In this device, the insecticide of a kind of aqueous chemical medicament-particularly by being immersed in the capillarity of the porous core body in the chemical agent, and is upwards drawn.And be placed in the heater heating of core upper end, make its evaporation.
The problem that above-mentioned one type of prior art syringe solved is the evaporation that improves from chemicals in the core body that contains a kind of inorganic particle.The solution that proposes according to the inventor is adding a kind of antioxidant in the mixture of preparation core body, with the obstruction that helps avoiding occurring in the core body.
But, if except because of add antioxidant need increase expense and except the porous core body be not when uprightly placing, beyond also will inevitably occurring leaking.This device also has shortcoming, and the transporting velocity of insecticide or evaporation rate (being the amount of time per unit) can change along with the filling condition in the active substance container widely.Evaporation rate when experiment finds that evaporation rate when active substance container is filled fully and active substance container almost are sky has obvious difference.
This inhomogeneous of insecticide and thereby the problem of bad formulation rate will inevitably occur.Propose a kind of structure of corresponding core body thus, its problem is that the size of core body will be set like this, is promptly filling up fully under the height in insecticide container, and its evaporation rate should will satisfy the purpose of insecticide on the one hand; And on the other hand, the dosage that the dosage that limit insecticide can not be impaired one's health with the people that reach near the stop device.This problem is very great, because general insecticide, for example, the preparation of pyrethroids all is a neurotoxic substance efficiently, is harmful to all biologies basically.Only depend on as for its extent of injury and to use metering.Therefore, accurate dosage is to avoid the primary condition of health risk effectively.
Especially, face recently increasingly from the public, to the criticism based on the insecticide of the evaporation of chemically reactive substance, successfully develop requiredly for the future market, a kind of vaporising device is provided, this device can overcome above-mentioned doubt effectively.
Therefore, task of the present invention is, proposes a kind of aforementioned part of claim 1 that is shown in, and is used for the device of evaporating liquid active material.This device is evaporating active more equably.And especially on whole effective liquid-filled height-from the minimum point of impregnated core body to the liquid highest point, all keep constant evaporation rate.
Above-mentioned task can be solved by the device that is used for evaporating liquid active material shown in the aforementioned part of this claim 1 and by means of the characteristics of characteristic.
The structure of core body according to the present invention stops the outer surface of the core body of liquid in impregnated in liquid active substance to penetrate in the core body, and by the capillary flow effect liquid upwards is transported to heater.On the other hand, on any possible degree of depth of core body dipping, liquid can enter the least significant end of core body and provide in core body evenly and flow in the end surfaces scope.
Favourable moulding of the present invention and structure are shown in appended claims and are described below.
Therefore, advantageously core body can be by firm porous material, and for example ceramic material constitutes, thereby it is particularly conducive to mass production, and it is had satisfy the characteristic of producing again.In order to make its outer surface have required characteristic, preferably use lacquer, plastics (as plastic bushing) or glaze (for example, passing through powder coating).This core body is preferably cylindrical.
Advantageously the core body in the heater zone also has coating.Like this with regard to advantageous particularly even when device is not the upright position placement, maybe when having the device overturning of flooding core body.Insecticide can not flow out by the extension of core body yet.This design moves until it first to the storage and the transportation of device, all is important.
In addition, coating advantageously, or only in the heater zone, or along its whole outer surface coating.When only being heated to running temperature in the extending area of core body part, coating can make the active substance of evaporation see through: in heating process, perhaps the coating in this zone continues fusing (disposable dissolving), perhaps this coating has such character, promptly when being subjected to heating, can see through, and when core body then cooled off, it closed (reversible dissolving) again.Thus, also can advantageously stop liquid active substance partly to flow out from the core body that will heat.
According to another preferred version of the present invention, above-mentioned coating also can be to constitute like this, promptly when heater zone inner core-body reaches running temperature, this coating is with regard to fusing or otherwise destroy and make the core body in this zone be permeability to the active substance of evaporation.In this scheme, it meets disposable dissolving (on seeing).According to another preferred construction, coating can be used sealing wax, wax or have the material that can compare pre-arcing characterisitics and carry out.On the other hand according to the solution of the present invention, then when the core body in the heater zone reaches running temperature, coating becomes porous in the invertible dissolution mode (on seeing), and therefore the active substance of evaporation is permeability.And when low temperature, it is again an impenetrability.In addition, this coating is preferably made by rubber, raw rubber or commeasurable material.
Last this coating preferably also can be form of film, and it is impenetrability to liquid active substance and the active substance that evaporates is permeability.In the ideal style, on the one hand, stop flow of liquid to enter outer surface; And on the other hand, the active substance of evaporation is partly flowed out unblockedly from the core body of heating, and do not have liquid to flow out.Preferably liquid active substance is a kind of insecticide or spice, and other commeasurable materials also are suitable for evaporation.
Preferably, heater can adopt PTC to implement.Thus, not only flexible but also saving is used for the electric energy of evaporating liquid, because its resistance characteristic PTC relevant with temperature also plays a kind of regulating element, the temperature of heater is remained on the constant operation point simultaneously.
Mechanically, device of the present invention preferably is installed in the shell, removably fixes a container that is used to adorn active substance therein, so that can change at any time.A preferred structure of the present invention is particularly suitable for fixing between shell and the container with bolt.
In addition, this shell can also be fixing simply with a plug that is easy to insert socket, reaches the machinery location simultaneously so that can apply electric current therein.
Another characteristics of the present invention have proposed independent claims, can with but only be not used for the core body of apparatus of the present invention, can be by drawing or compacting (particularly extruding), and roasting is subsequently made based on the raw material of ceramic based material.According to the present invention, above-mentioned roasting be will be lower than draw material given sintering temperature.The so-called sintering temperature of this paper is meant that because roasting can become a kind of densification, atresia is impenetrability to liquid active substance fully substantially at the drop-down prepared material of this temperature.Find according to the present invention, drawing material (as the raw material of core body) only depends on sintering temperature to the permeability of liquid: sintering temperature is higher, and the evaporation rate that obtain core body is lower, wherein, when reaching sintering temperature, this core body virtually completely no longer includes liquid and evaporates through core body.It is inappreciable that roasting time is fastened in this external this pass.In fact, only relevant with the maximum temperature that reaches.The temperature that sets according to the inventive method just, and the porosity of its control core body.
By following specific descriptions with embodiment and accompanying drawing, can be clearer to advantage of the present invention, feature and details.
Description of drawings is as follows:
Fig. 1 is the generalized section of the vaporising device of first embodiment of the present invention,
Fig. 2 is the profile of the core body with coating of another embodiment,
Fig. 3 is the heater of another embodiment and the signal detail view of core body epimere part,
Fig. 4 is the profile of the core body of prior art,
Fig. 1 has represented the device that is used for evaporating liquid active material of first embodiment.It is to implement preferred plan of the present invention that first embodiment is understood as.Wherein, one is used for the loaded with liquid insecticide, cylindrical basically, and shows the plastic container 1 of taper ampuliform at its opening part, at its opening removably to be fixed on the plastic shell 2.
An illustrated heater 3 is arranged in shell 2.This heater 3 has a PTC resistive element 4, and it provides electric current by placing the attaching plug 5 on the shell.This attaching plug also mechanically remains on whole device on the socket and is rotatably installed in the shell 2 voltaic couple with this socket of taking vertically or flatly placing simultaneously, always keeps plumbness to cause device.
The sheet of being made by stamping parts 6 that is used to conduct heat is housed, and it is around core body 7 installations on the PTC element.On the one hand it can make heat have no loss ground as far as possible and be transmitted to core body quickly from PTC, and that the sheet 6 that in fact can contact the suitable shaping of core body on the other hand arbitrarily forms is a kind of, makes core body be fixed on machinery in the shell 2.Because the core body 7 of ceramic is can be not incendiary, it can guarantee that device has higher processing safety when the core body when for example being made up of cardboard or commeasurable combustible was compared like this.Because the effect of ceramic core body electrifiable insulator, then described structure is configured in electric aspect and also has processing safety, and does not need the expense of other electric insulation aspect.
Its cross section is that columniform core body 7 comprises a porous potter's clay body 8 basically.It is through will be basically by potter's clay and wood flour, and with the mixture of water fusion, draws or extrude, and roasting is made.
According to the core body 7 of first embodiment, along its outer surface, be coated with last layer coating 9, this coating is the junction that always extends to heater 3 bottom by core body shown in Figure 1.The outer surface of core body in heater 3 zone, with and upper surface 11 and lower surface 10 all do not have coating.
Coating 9 is made up of one deck acryloyl base class lacquer (for example commercially available nial polish).
In the operating process, the voltage by attaching plug 5 is fed in the PTC heating element heater 4, and makes its heating.And make the upper part heating that places the core body 7 in heater 3 zones by the sheet 6 that plays conduction of heat.
By the capillarity in the core body 7, make liquid pesticide through the lower surface or surface 10 and enter core body 7, and upwards be lifted in the potter's clay body 8, be evaporated or vaporize (in this application, evaporate and vaporization be synonym) through the heating in the zone of heater 3 and go out core body with gaseous flow.Wherein, the PTC heating element heater according to the requirement of selected liquid pesticide, provides the temperature of substantial constant, the about 100-140 of its scope ℃.The characteristics of PTC resistor are can change resistance to adjust the fluctuation of temperature.Therefore, the enhancing of electric current or weaken just can correspondingly cause moving of temperature.Make full use of this principle, just can easily control the core body upper part temperature constant remain on the operating point.
Owing on the whole core body outer surface that is immersed in the liquid pesticide, coating 9 is arranged, makes flowable insecticide in the zone of lower surface 10, to have entered in the potter's clay body 8 of conveying effect.Therefore, can guarantee the influence of the filling height of liquid active substance 12 in the receptor 1 not, to flowing through of insecticide is an identical effective surface area eventually, thereby has satisfied in all evaporation rates that is installed on the liquid height and all keep constant prerequisite.
Below, we are the porous core body that is provided with coating according to prior art shown in 4 with reference to the accompanying drawings, it is opposite with existing known core body according to core of the present invention what is illustrated as, and can make the throughput of liquid pesticide all keep constant on all liquid capacity filling height.
Shown in the arrow among Fig. 4, liquid active substance infiltrates in the porous core body by all dipping surfaces.Therefore, in the inside of core body, (seeing arrow 13) formed eddy current 14 in the main conveyance fluid that from bottom to top vertical direction moves.This eddy current 14 especially can constitute the less important liquid stream that laterally enters core body.Eddy current 14 has hindered the directed flow of main conveying liquid stream, and to its circulating rate, with and evaporation rate all caused negatively influencing.Because of liquid level decline (because consumption of liquid) can cause eddy current still less, therefore, mainly carry the influence on the liquid stream, also different owing to the eddy current effect that depends on liquid level.
In contrast, according to the present invention, stop liquid laterally to enter core body, this has just got rid of above-mentioned shortcoming, and may form the strict directed liquid stream of carrying that liquid body not is installed in effect of altitude.Experimental result shows that the pressure that depends on liquid level is insignificant to the influence of carrying amount of liquid.
In the embodiment that describes, select the material of plastic paint for use as coating 9, this coating also can be made by arbitrary other materials, for example with glaze or cabinet.Unique important factor is exactly that 9 pairs of liquid pesticides 12 of this coating will be impermeability, nor can be dissolved in this liquid pesticide, consequently even in long term storage also can not make this coating 9 that any decomposition or dissolving take place.Being used in the preferred material of the coating or the coat of paint, is a kind of material that does not penetrate into dearly in the porous potter's clay body 8 itself, so that can not stop up its hole, thereby can not reduce effective capillary cross-sectional area.
Fig. 2 represents the vertical section of the core body 7 of another embodiment of the invention.
In this embodiment, coating 9 is to be coated in this wise on the potter's clay body 8, the whole outer surface that its covers pottery body 8 with and upper surface 11.Fig. 2 shows the core body under the feed state, and it can assemble as among Fig. 1, and can transport and store in the assembling mode of package unit, and even when package unit is in heeling condition, the liquid of internal memory can not flow out from the upper end yet.
In this embodiment, coating 9 is made by following material, and this material is the meeting local melting when being heated, thereby when turning round the first time of vaporising device, under operative temperature, gasiform insecticide passes through and flow out the upper part of core body.
Experiment shows that according to this embodiment, coating 9 is sealing wax layers of very thin coating, and its fusion temperature is less than about the operating temperature of PTC greatly, or the evaporating temperature of core body upper part.Also can obtain comparable result by other coating, this coating is fusing or otherwise breaking-up partly under relevant temperature.And therefore make the Tao Tineng of the core body in the heater zone unblocked.
We it is also conceivable that and adopt a fusible cover cap that gives stress rubber cover cap as core body, and its material and intensity is suitable balloon adventitia almost.Along with the rising of temperature, the intensity of giving the stress rubber also changes to some extent.Under suitable size, it can make cover cap tear when operative temperature.And give stress by this, can make whole top evaporation region unblocked immediately.
Certainly, an easy cover cap can also be housed in this zone, and can suitably be removed (or loading onto again) with hands.
Relate to relevant temperature, for example need be in the temperature in the core body upper area greatly about 120 ℃ for the employed active substance of evaporation purpose.At this moment, the fusing of the local coating in above-mentioned zone or breaking-up temperature can be adjusted in about 100 ℃.
Fig. 3 shows the cross-sectional view of the core body upper part of another embodiment of the present invention.
In this embodiment, the whole outer surface of core body 7, with and upper surface 11 also all scribble coating 9.It is different from and second embodiment shown in Figure 2, and the coating when operation on all sites all keeps, and does not occur destructing partially when core body heats for the first time.
But in heating process, the gaseous state insecticide can flow out, and at this moment the used coating material in the present embodiment must be permeability to gasiform insecticide at least under heating condition.
Rubber or raw rubber material have the characteristic of high elongation, and more or less can form gross porosity when being the form of suitable thin layer.It is applicable to the material as following coating: when passing through the heating of heater, this material can point-like shrink, and forms hole in coating, as shown in Figure 3.Therefore, the gaseous state insecticide can be overflowed by these holes.When following cooling core body, hole can be closed again.
Advantageously, the coating of this closed hole again can make being equipped with core body and filling the device of the container of insecticide of beamhouse operation, carries out the transportation of sealing state.
Perhaps, permeable coating when heating in order to be formed on also can adopt, a kind of known synthetic material as shrinkage hose.As everyone knows, this shrinkage hose has: shrinkable characteristic when heating in case heat when surpassing regular hour and/or temperature, forms hole or breach, thereby reaches desired effect in material.Certainly, above-mentioned contraction process, to shrinkage hose, normally irreversible.That is to say that when core body cooling subsequently, this hole or breach no longer seal.
Perhaps, also can consider to use thin film as coating 9, its (also not temperature influence) has some gaseous state insecticides can pass through, but the impenetrable hole of liquid insecticide.This class thin film is for example general known to be based on TEFLON (tetrafluoroethene), and will be suitable for existence conditions and molecular size.
Above-mentioned embodiment is to be used to enumerate description fully, and does not limit the present invention.Therefore, it is contemplated that any core body shape and preparation method, and various cross sections, as long as implement with principle of the present invention.The term " periphery " that uses in this application particularly is meant the outer surface of the core body with Any shape and cross section.
Imagination of the present invention is also particularly including the characteristic of outer surface coating, is not fully to extend to 10 places, lower surface downwards as it of 9 expressions of symbol among Fig. 1 always.On the contrary, principle of the present invention is interpreted as, therefore coating 9 only extends on the most outer surface of the core body that impregnated in the liquid active substance, does not for example still have coating less than the predetermined outer peripheral surface portion on the surface of relevant coating in the zone of lower surface 10.
Application of the present invention is not limited only to the evaporation of liquid pesticide.Device of the present invention also is used in particular for liquid fungicide, the evaporation of perfume or other comparable chemicals.The container of corresponding suitable configuration can be provided, the lower surface (10 among the figure) of core body be positioned on the position, minimum deep of this container as much as possible, so that it is emptied completely.
A favourable improvement of the present invention, especially can be directly with the described conveyance fluid of vertical promotion of core body.This uses the wood fiber of elongation owing to when preparing core body, cotton fiber or similar material, and they are to be suitable for the material that orientation prepares core body.Like this, in the finished product core body, also has suitable elongation arrangement of apertures.
Because the present invention also relates to be suitable for producing in batches product, and must be to produce in batches at an easy rate, particularly preferably be and be applicable to other configuration product of this batch process.Particularly including the coating on core body, it is by powder coating, with hairbrush or scrubbing brush roller coating, and/or is immersed in the corresponding lacquer and hot curing varnish or enamel and the coating made.
A kind of method for preparing core body is described below, and core body is suitable in the vaporising device as shown in Fig. 1-4 especially.
This columniform ceramic core body is based on cordierite material.This material is usually as the carrier material of electric heater unit etc.Such material meets the standard of DIN VDE 0335.
Above-mentioned embodiment more properly, relates to a cordierite and draws material, and this material contains Al as stock
2O
3(about 34%), SiO
2(about 49%) and MgO (about 2%), the regulation sintering temperature (sintering temperature) of this drawing material is about 1300 ℃.After this roasting temperature, form a kind of impervious basically sintered body completely, in its original application region, be used as high thermal resistance as it, the insulator of electricity is necessary.In addition, also can use the barium-Talcum-drawing material that contains BaO.Its other following preparation parameter that will describe all is the same.
By the present invention, under this situation, be used as the drawing material water (about 10-20% amount) or the drawing oil fusion as usual of preparation core body.Then, be drawn into the basic configuration of core body and be cut into the length of wanting.Then carry out roasting being starkly lower than under 1300 ℃ the sintering temperature.Prove that by application of the present invention it is favourable that this sintering temperature is adjusted in the 1000-1200 ℃ of temperature range, more preferably in 1050-1100 ℃ temperature range.Wherein, find that the porosity of core body only is subjected to the influence of sintering temperature.Sintering temperature is higher, and then single hole is just little.Therefore, make active substance pass through the percent of pass of core body or evaporation rate is just lower.The evaporation characteristic of sintering temperature control core body in this point just.
In addition, also show, be generally about 12 hours actual roasting time, to porosity without any influence.Described basic parameter is the sintering temperature of setting.
This respect should be considered, by the core body of the present embodiment, draws the water and drawing oil that material added except being used to prepare, the filler that must not contain other (for example, things such as organic material), by meaning of the present invention, provide required porosity by the sintering temperature of setting.
Claims (12)
1. the device that is used for evaporating liquid active material, it comprises shell (2), container (1), is used for carrying the core body that is immersed in liquid active substance (12) (7) and the heater (3) of this active substance, an end of core body under immersion condition wherein, outstanding from this liquid active substance, heater (3) is contained in the above-mentioned jag zone of core body, it is characterized in that
Core is, at least on most of length of the core body in impregnated in liquid active substance, its outer surface, basically active substance (12) is impermeable, and with the zone of the opposing end faces (10) of above-mentioned jag in, then active substance (12) is permeability basically, and
In the zone of heater (3), when heated condition, the active substance (12) that evaporates is permeability at least.
2. according to the device of claim 1, it is characterized in that this core body is made up of solid porous material.
3. according to the device of claim 1 or 2, it is characterized in that the whole outer surface of this core body except the zone of heater, all has coating (9), this coating is impermeability to liquid active substance, nor is dissolved in this liquid active substance.
4. according to the device of claim 3, it is characterized in that this coating is by japanning, powder coating or constitute by glazing.
5. according to the device one of among the claim 1-4, it is characterized in that the core body in the heater zone has coating, this coating has when core body reaches operative temperature by heater, then the active substance of evaporation is the character of permeability.
6. according to the device of claim 1 or 2, it is characterized in that, on the whole outer surface of core body, coating is arranged all, this coating is impermeability to liquid active substance, and be not dissolved in the liquid active substance, and this coating is to during by operative temperature that heater produced, being permeability at core body to the active biomass of evaporation.
7. according to the device one of among the claim 1-6, it is characterized in that, this heater (3) is the electric heater unit with at least one PTC element (4), and wherein the electrode (6) of the PTC element of heat by being centered around described jag zone inner core-body is delivered to core body (7) from PTC element (4).
8. according to the device one of among the claim 1-7, it is characterized in that, described core body (7) is to be contained in the shell (2) with heater (3), and liquid active substance (12) is to be contained in the container (1), and container (1) is removably to be fixedly attached to shell (2).
9. device according to Claim 8 is characterized in that, a plug (5) that is used for being inserted into electrical socket is arranged on shell (2), and be used for bracing or strutting arrangement therein.
10. use the preparation method of core body according to the device that is used for evaporating liquid active material of claim 1, it is characterized in that, comprise the following steps:
Draw material or pressed material by the potter's clay feedstock production,
Under the temperature of the sintering temperature that is lower than described drawing material or pressed material, set the sintering temperature of core body,
Roasting core body under the sintering temperature of setting.
11. the method according to claim 10 is characterized in that, described drawing material is that cordierite draws material or barium-Talcum-drawing material, and its sintering temperature is set in the 1000-1200 ℃ of scope.
12. the method according to claim 10 or 11 is characterized in that, is coated with application layer on the outer surface of core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96180233A CN1104259C (en) | 1996-02-09 | 1996-02-09 | Arrangement for evaporating liquid active material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96180233A CN1104259C (en) | 1996-02-09 | 1996-02-09 | Arrangement for evaporating liquid active material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1215344A CN1215344A (en) | 1999-04-28 |
| CN1104259C true CN1104259C (en) | 2003-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96180233A Expired - Fee Related CN1104259C (en) | 1996-02-09 | 1996-02-09 | Arrangement for evaporating liquid active material |
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| CN (1) | CN1104259C (en) |
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| US7465475B2 (en) * | 2004-11-09 | 2008-12-16 | Eastman Kodak Company | Method for controlling the deposition of vaporized organic material |
| CN107032427A (en) * | 2017-04-28 | 2017-08-11 | 曹志平 | A kind of method and device for concentrating waste water or reclaiming nutrient |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2194442A (en) * | 1986-09-02 | 1988-03-09 | Fumakilla Ltd | Heat fumigation apparatus |
| EP0695553A1 (en) * | 1994-08-03 | 1996-02-07 | Steinel GmbH & Co. KG | Electric vaporizer for active substances |
-
1996
- 1996-02-09 CN CN96180233A patent/CN1104259C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2194442A (en) * | 1986-09-02 | 1988-03-09 | Fumakilla Ltd | Heat fumigation apparatus |
| EP0695553A1 (en) * | 1994-08-03 | 1996-02-07 | Steinel GmbH & Co. KG | Electric vaporizer for active substances |
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| CN1215344A (en) | 1999-04-28 |
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