CH660910A5 - Method for floods of a wall of an area surrounded with a gas. - Google Patents

Description

660910

PATENT CLAIMS

1. A method for flooding a space surrounded by a wall with a gas, which space is connected to at least one gas delivery element and has at least one closable operating opening, characterized in that the gas flow or partial flows of the gas to be flooded through the space at time intervals in per interval at least one direction of flow can be supplied to the room.

2. The method according to claim 1, characterized in that the gas stream or the partial streams of the gas are supplied to the room with a substantially uniform area load based on the area of the respective gas introduction organ.

3. The method according to claim 1 or 2, characterized in that the gas or the partial flows of the gas, before it or they are supplied to the room, are guided through channels extending along the wall.

4. The method according to any one of the preceding claims, characterized in that the interval length is variable.

5. The method according to any one of the preceding claims, characterized in that two partial streams are supplied to the room in opposite directions.

6. The method according to claims 4 and 5, characterized in that the partial flows are controlled in such a way that the impact front which forms, starting from the gas introduction element assigned to one partial flow, migrates through the space to the gas entry element assigned to the other partial flow.

7. The method according to any one of the preceding claims, characterized in that the gas is conditioned outside the room in a processing device.

8. The method according to any one of claims 2 to 7, characterized in that the gas introduction member is a perforated sheet, e.g. a perforated plate, is.

In a climatic room, an air flow is generated by a fan. The flow organs are e.g. arranged behind or above with a more or less good flow guidance and consequently flow profile, the constancy being achieved by a high flow speed. The occupancy of the room is not and cannot be taken into account. In particular in the area of basic environmental test methods with simulations of the climate in a climate and test room cabinet, the fumigation of the room is a major problem, since the flow is usually sensitive to the goods or test objects arranged in the room. In particular, the formation of so-called dead zones, i.e. Zones that are not flooded in the flow direction behind the test objects must be prevented, because e.g. spoken in the norms of spatial constancy.

The object of the invention is to develop a method which prevents the formation of dead zones which are constant over time, in particular when the room is occupied. It is also important that the gas present in the room is removed from the usable space after a certain time and brought back to the desired setpoint. Another problem is represented by changes in the setpoints or the conditions. These can be carried out in a “controlled” manner by a treatment device, FIG. 4, (e.g. humidification and dehumidification). This object is achieved by means of the features listed in the characterizing part of claim 1. Preferred embodiments are specified in the dependent claims.

The invention is described below using an example with the aid of the figures.

The figures show the following possible solutions:

Figure 1 wandering impact front according to the dependent claim 6;

Figure 2 uniform area load according to dependent claim 2 and features of further claims;

3 each two partial flows supplied in the opposite direction to the room according to the dependent claim 5;

Figure 4 processing device of the gas according to the dependent claim 7 (various other possibilities)

Figure 1: Wandering impact front according to the dependent claim 6. With two opposite flow inputs 1,2, the power 3.4 is adjusted via an interval control so that the impact zone C moves from one side A to the other B and back.

In the case of a gas delivery device with input 5, the gas quantity is distributed at intervals on the sides of the room via a distribution flap 6.

The room exit 7 is routed through the preparation device, reconditioned, and fed back into the room 5, 6. Depending on the room size, arrangement and requirements, ducting is practically dispensed with on opposite fans. In the figure, the sewer system is drawn in in great detail with the blow-in ring 10, distribution space 11 and circulation channel 12.

Figure 2: Uniform surface loading according to dependent claim 2 and features of further claims.

The room sides are expanded with a second wall 21; the space 22 serves as a channel. The wall can consist of perforated plate 23, adjustable segments arranged next to one another or a corresponding mat. Canal installations could further promote the even distribution over the entire outlet area.

The channel sides are brought together 24 and operated by one or different gas delivery members 25.

Change of direction can be brought about by turning in and out and clockwise. The conveying members do not have to be normal fan blades, but with appropriate fans 26, the flow profile is evenly distributed over the width.

Figure 3: Two partial flows supplied in the opposite direction to the room according to the dependent claim 5.

The flow distribution is carried out in approximately the same way as in FIG. 2. The changes in direction are achieved by a flow yoke 31, which alternately connects the sides 32 to 33 via a conveying member 34. A cover plate 35, opening flaps in 36 or a corresponding shape of the yoke 31 enable the changes mentioned. A round shape improves the uniformity in the change of direction of the flow axes. The shape of the interior is angular. The space thus created is used to accommodate distributions of all kinds. Flow directions from front to back and from back to front are also possible, for this purpose the channels 37 are arranged in the corners.

Figure 4: Treatment device of the gas according to the dependent claim 7.

In the end, however, the previous solution examples are only as good as the results of the gas treatment.

The system diagram shows a hint of external conditioning with additional internal exchangers 41. In addition to the gas delivery 42, heat 43 and cold treatment 44 and a temperature control 45, which can be switched on both internally and externally, all exchangers 46 are arranged in pairs. This enables the dryer2 to be regenerated

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medium 47 or the preparation for a setpoint change. The gas is saturated 100 percent in the exchanger 48, whereby at the temperature 49 the percentage of the relatively required humidity and the room temperature must be assumed. So the humidification temperature must never be higher than that of the room. In the temperature control 50, it is brought to the cabinet temperature in order to avoid disruptive influences. Depending on the situation, fresh gas 51 is fed in, dried and the valves are automated with actuators.

Application examples for the process:

- Basic environmental test procedures when the shifts and spatial constancy are met.

- Drying of all kinds (e.g. brick), where the throughput time must be aligned to the last dry.

- Applying a medium to objects where corresponding layer tolerances occur in unfavorable flow conditions.

5 - If undesirable flow influences of a room wall are switched off, i.e. the resulting distance wants to be used optimally.

- If a test specimen disturbs the gas flow in the room in such a way that a constant flow does not

io is enough.

- For increasing the occupancy volume while observing the usable space conditions. Since the measurement data acquisition is continuously improved, there are fewer and fewer restrictions on the side of the amount of data to be processed.

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4 sheets of drawings