Rapid evaporator arrangement with rapid evaporator, and operating method

Abstract

A device for generating a decontaminating agent vapor, in particular hydrogen peroxide vapor, comprising a single- or multipart evaporator body (1); a heating device for heating the evaporator body (1); at least one supply channel, preferably multiple supply channels, for supplying a liquid decontaminating agent to be evaporated, in particular hydrogen peroxide, to at least one of multiple blind holes (7, 8, 9, 10) arranged in the evaporator body (1); and a flow channel (2) which is arranged above the upper blind holes edges (11, 12, 13, 14) of the blind holes (7, 8, 9, 10) and which connects a carrier medium inlet (3) to an outlet (4) in a gas-conductive manner for a gaseous carrier medium, in particular air, in order to discharge the decontaminating agent vapor through the outlet (4) in a flow direction of the carrier medium. According to the invention, at least two of the blind holes (7, 8, 9, 10), preferably all of the blind holes (7, 8, 9, 10), are fluidically connected together at a distance from the respective upper blind hole edges (11, 12, 13, 14).

Claims

1. A device for generating decontaminating agent vapor, comprising a single- or multi-part evaporator body (1), a heating device for heating the evaporator body (1) as well as at least one supply channel for supplying a liquid decontaminating agent to be evaporated, to at least one of multiple blind holes (7, 8, 9, 10) arranged in the evaporator body (1), and to a flow channel (2) for a gaseous carrier medium arranged above upper blind hole edges (11, 12, 13, 14) of the multiple blind holes (7, 8, 9, 10) and connecting a carrier medium inlet (3) to an outlet (4) in a gas-conducting manner for discharging the decontaminating agent vapor through the outlet (4) in a flow direction of the gaseous carrier medium, wherein the flow channel is defined by a side wall, and the upper blind hole edges are defined in the side wall, wherein at least two of the multiple blind holes (7, 8, 9, 10) are connected to one another in a fluidic manner at a distance to their respective upper blind hole edges (11, 12, 13, 14) by fluidic connection (19, 20, 21, 22), and wherein a base of the fluidic connection (19, 20, 21, 22) is configured as an evaporator surface heatable by the heating device, so that decontaminating agent vapor generated thereon can ascend into the flow channel (2) via the at least two of the multiple blind holes (7, 8, 9, 10) connected to one another by means of the fluidic connection (19, 20, 21, 22), and wherein the fluidic connection (19, 20, 21, 22) is configured such that the fluidic connection (191, 20, 21, 22) connects a deepest region (27, 28, 29, 30) of each of the at least two of the multiple blind holes (7, 8, 9, 10), which are connected to one another in fluidic manner, in a common plane, and wherein the fluidic connection (19, 20, 21, 22) is at least partially defined by a surface in the common plane at the deepest region (27, 28, 29, 30).

2. The device according to claim 1, wherein the fluidic connection (19, 20, 21, 22) comprises a circumferentially closed connection channel in the single- or multi-part evaporator body (1).

3. The device according to claim 2, wherein the circumferentially closed connection channel is between two blind holes (7, 8, 9, 10) fluidically connected to one another.

4. The device according to claim 1, wherein the fluidic connection (19, 20, 21, 22) is produced by milling high-grade steel in radial direction with respect to longitudinal center axes of the multiple blind holes (7, 8, 9, 10).

5. The device according to claim 1, wherein the upper blind hole edges (11, 12, 13, 14) of the multiple blind holes (7, 8, 9, 10) fluidically connected to one another are arranged in a common plane.

6. The device according to claim 5, wherein the upper blind hole edges (11, 12, 13, 14) of all blind holes (7, 8, 9, 10) fluidically-connected to one another are arranged in the common plane.

7. The device according to claim 1, wherein the upper blind hole edges (11, 12, 13, 14) are defined in and located on a bent, cylindrical shell surface section of the side wall defining the flow channel (2).

8. The device according to claim 7, wherein the upper blind hole edges extend laterally up along a curved inner surface of the bent, cylindrical shell surface section, away from bottom dead center of the flow channel (2), and the upper blind hole edges of the multiple blind holes are defined on either side of, and spaced from, a section of the side wall extending along bottom dead center of the flow channel.

9. The device according to claim 1, wherein at least two of the multiple blind holes (7, 8, 9, 10) fluidically connected to one another are arranged to be spaced apart in the direction of the flow direction of the gaseous carrier medium and/or wherein at least two of the multiple blind holes (7, 8, 9, 10) fluidically connected to one another are arranged to be spaced apart perpendicular to the flow direction of the gaseous carrier medium.

10. The device according to claim 1, wherein the heating device is arranged in the single- or multi-part evaporator body (1) directly below each blind hole bottom in a virtual extension of a respective blind hole longitudinal center axis.

11. The device according to claim 1, wherein the decontaminating agent vapor is hydrogen peroxide vapor and the gaseous carrier medium is air.

12. The device according to claim 1, wherein the at least one supply channel comprises multiple supply channels.

13. The device according to claim 1, wherein all multiple blind holes (7, 8, 9, 10) are connected to one another in a fluidic manner at a distance to their respective upper blind hole edges (11, 12, 13, 14).

14. The device according to claim 1, wherein the fluidic connection has a planar base surface.

15. Arrangement, comprising a space to be decontaminated and a device according to claim 1 by means of which the space can be applied with decontaminating agent vapor.

16. The arrangement according to claim 15, wherein the space is an isolator and/or a lock.

17. A method for operating a device for generating decontaminating agent vapor, according to claim 1, wherein liquid decontamination agent is supplied dropwise via the at least one supply channel into at least one of the blind holes (7, 8, 9, 10), wherein liquid decontamination agent supplied into one of the multiple blind holes (7, 8, 9, 10) flows into at least another one of the multiple blind holes (7, 8, 9, 10) and is evaporated into liquid decontamination agent vapor there.

18. The method according to claim 17, wherein part of the liquid decontamination agent flowing through the fluidic connection (19, 20, 21, 22) evaporates in the fluidic connection (19, 20, 21, 22) and/or wherein part of the liquid decontamination agent flowing through the fluidic connection (19, 20, 21, 22) flows to yet a further blind hole (7, 8, 9, 10) via the other blind hole (7, 8, 9, 10) and a further fluidic connection (19, 20, 21, 22).

19. The method according to claim 17, wherein the total volume flow of the liquid decontamination agent supplied to the evaporator body (1) is kept constant.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The drawings show in:

(2) FIG. 1: a longitudinal sectional view through a single-part evaporator body of a rapid evaporator in a sectional plane running vertically,

(3) FIG. 2: a sectional view through the evaporator body according to FIG. 1 in a horizontal sectional plane,

(4) FIG. 3: a plan view on the evaporator body according to FIGS. 1 and 2, and

(5) FIG. 4: a sectional view through the evaporator body along a section line running essentially in a U-shape.

(6) The same elements and elements having the same function are denoted with the same reference characters throughout the figures.

DETAILED DESCRIPTION

(7) FIG. 1 to FIG. 4 show an evaporator body 1 of full material, here high-grade steel. The evaporator body 1 forms the core constituent of a rapid evaporator otherwise not shown in detail and described for example in EP 2 488 602 B1 as well as a (decontamination) arrangement shown there in FIGS. 10 and 11.

(8) A flow channel 2 is formed in the evaporator body 1 which connects a carrier medium inlet 3 to an outlet 4 in a gas-conducting manner. A flange 5, 6 is in each case assigned to the carrier medium inlet 3 and the outlet 4 with which the evaporator body 1 can be connected or flanged to corresponding lines or in the case of the outlet 4 directly to a space to be decontaminated, if need be. A carrier medium, in particular air is supplied via the carrier medium inlet 3 which medium then carries along the decontamination agent vapor emerging in the evaporator body 1 into the space to be decontaminated.

(9) For the decontamination agent vapor generation per se, multiple, in the present example a total of four blind holes 7, 8, 9, 10 are provided, which are produced by drilling. An upper blind hole edge 11, 12, 13, 14 is located in a bent region of the cylindrically contoured flow channel below an upper opening 15 which is closed in a completely mounted rapid evaporator and which is penetrated by supply channels (not shown), in particular formed by injection grout needles, which permeate the flow channel 2 perpendicular to the longitudinal extent thereof and in each case end in one of the blind holes 7, 8, 9, 10. As described in the general description, it is not mandatory necessary, though preferred, to assign a distinct supply channel to each of the blind holes 7, 8, 9, 10 as the liquid decontamination agent, as will be described later, can/will be distributed at distance to the flow channel 2.

(10) Below the blind holes 7, 8, 9, 10, reception bores 16, 17 running in parallel to the flow channel 2 are located which run directly below the blind holes 7, 8, 9, 10 and are intersected by virtual longitudinal center axes of the blind holes 7, 8, 9, 10. The heating device is received in the reception bores 16, 17 in the completely assembled rapid evaporator.

(11) In each case a circumferentially closed blind hole section 18 adjoins the upper blind hole edge 11, 12, 13, 14 which section spaces respective neighboring of the blind holes. This blind hole section 18 comprising a circumferentially closed shell surface also spaces the flow channel 2 to fluidic connections 19 assigned thereto and which connect blind holes 7, 8, 9, 10 below the flow channel 2.

(12) FIG. 1 shows two fluidic connections 19, 20 and FIG. 2 additionally shows the other fluidic connections 21, 22. In particular from FIG. 2 can be seen that the blind holes 7, 8, 9, 10, more specific the non-illustrated longitudinal center axes thereof, are arranged in a rectangular form or limit the corners of a virtual rectangular, here an virtual square, wherein each of the blind holes 7, 8, 9, 10 is connected to two further of the blind holes via in each case a fluidic connection.

(13) It can be seen, that the fluidic connections 19, 20, 21, 22 (cf. in particular the synopsis of FIG. 1 and FIG. 2) are configured in each case as a circumferentially closed connection channel 1, i.e. as a type of connection tunnel. The fluidic connections 19, 20, 21, 22 or connection channels 1 have a (lowest) base 23, 24, 25, 26 which connects the lowest regions 27, 28, 29, 30 of the blind holes 7, 8, 9, 10, i.e. the blind hole bottoms to one another in a common plane.

(14) It can be seen in FIG. 4 how the fluidic connections 19, 20, 21, 22 or connection channels 1 are produced, namely by radial, i.e. lateral milling, starting from an original blind hole bore. The corresponding milling contours 32 can be seen in FIG. 4 and FIG. 2.

(15) It can be taken in particular from FIGS. 2 and 4 that the blind holes arranged in a rectangle are separated from one another in a lower region, i.e. at one level with the fluidic connections 19, 20, 21, 22 via a center pillar 33 which establishes the connection between the evaporator body region laterally of the circumferentially closed blind hole sections 18 and the evaporator body region below the lowest regions 27, 28, 29, 30 of the blind holes 7, 8, 9, 10. In an alternative embodiment, a center pillar 33 can be omitted by removing the material forming the pillar, in particular by lateral milling, possibly when arranging the blind holes closer to one another. Then, a common interrupted space is established as the liquid-conductive connection between all of the blind holes. A such, the fluidic connection is also characterized by a ceiling region radially neighboring the blind holes.

(16) The liquid decontamination agent introduced, in particular dropwise, in one of the blind holes 7, 8, 9, 10 via a supply channel, can distribute via the fluidic connections 19, 20, 21, 22 so that using the entire evaporator surface is possible even if intentionally or non-intentionally one of the blind holes 7, 8, 9, 10 is not directly supplied from above with liquid decontamination agent via a supply channel.

(17) The configuration of the fluidic connections 19, 20, 21, 22 as in each case a circumferentially-closed connection channel means that these comprise a closed ceiling area with respect to the lower base 23, 24, 25, 26 as well as side wall areas spaced apart from one another and connecting the ceiling area to the base.

LIST OF REFERENCE CHARACTERS

(18) 1 Evaporator body 2 Flow channel 3 Carrier medium inlet 4 Outlet 5 Flange 6 Flange 7 Blind hole 8 Blind hole 9 Blind hole 10 Blind hole 11 Upper blind hole edge 12 Upper blind hole edge 13 Upper blind hole edge 14 Upper blind hole edge 15 Upper opening 16 Reception bore 17 Reception bore 18 Blind hole section 19 Fluidic connection 20 Fluidic connection 21 Fluidic connection 22 Fluidic connection 23 Base 24 Base 25 Base 26 Base 27 Lowest region 28 Lowest region 29 Lowest region 30 Lowest region 32 Milling edges 33 Pillar