JPH077717U - Mist separation device - Google Patents

Abstract

(57) [Abstract] [Purpose] A mist separation device that can improve the efficiency of mist separation from gas in a gas supply duct, does not need to change the outer dimensions of the duct, has a small pressure loss, and does not require maintenance. I will provide a. [Structure] A thin plate permeable structure is provided downstream of the bent portion of the gas supply duct in parallel with the gas flow, a bent portion is provided in the vicinity of the downstream of the thin plate permeable structure, and a drain port is provided at the bottom of the bent portion downstream. A mist separating device provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for separating mist from a gas, and particularly to a device suitable for mist separation in an air conditioning system.

[0002]

[Prior art]

 One of conventional methods for separating mist from gas is to bend the duct part 1 as shown in FIG. 3 and use the inertial force of the flowing gas to directly attach the mist to the duct wall to separate the mist. There is a way. However, in this method, only relatively large mist adheres, and mist-like mist flows with gas and almost cannot be separated, and the mist separation efficiency is very low.

As another method of separating mist from gas, as shown in FIG. 4, a particle separator 3 is provided in the middle of a duct 2 to generate a centrifugal force in the flowing gas to generate mist in the gas. Is attached to the duct wall to separate them. This method can separate smaller mist than the above-mentioned method, but the mist-like mist cannot be separated sufficiently and flows with gas, so that the separation efficiency is low. Further, since the structure of the particle separator 3 is complicated, the shape of the duct 2 is limited.

As another method of separating mist from the gas, as shown in FIG. 5, an intermediate portion of the duct 4 is enlarged, and an air filter 6 is provided in the enlarged portion 5 to prevent the flowing gas from flowing. There is a method in which the mist is passed through the filter 6 and the mist is separated by the filter 6. In this method, the pressure loss tends to be large, and the size must be increased to reduce the pressure loss. In addition, maintenance is required.

As a related technique, there is “a device for collecting water from an air flow” described in Japanese Patent Laid-Open No. 62-197120.

[0006]

[Problems to be solved by the device]

 Therefore, the present invention provides a mist separation device that can improve the mist separation efficiency from the gas in the gas supply duct, does not need to change the outer dimensions of the duct, has a small pressure loss, and does not require maintenance. Is what you are trying to do.

[0007]

[Means for Solving the Problems]

 The mist separation device of the present invention for solving the above-mentioned problem is provided with a thin plate permeable structure 12 in parallel with the flow of gas, downstream of the bent portion 11 of the gas supply duct 10 as shown in the conceptual diagram of FIG. A bent portion 13 is provided in the vicinity of the downstream of the thin plate transmission structure 12, and a drain hole 14 is provided at the bottom of the bent portion 13 on the downstream side. It is preferable that the thin plate transmission structure has a honeycomb shape having hexagonal, rectangular or triangular cells. Further, the gas supply duct is extremely useful in the case of an air supply duct of an air conditioning system of an aircraft.

[0008]

[Action]

 According to the mist separation device of the present invention configured as described above, when the gas flowing through the gas supply duct 10 passes through the bent portion 11, a large mist is attached to the duct wall by the inertial force, and the mist is separated from the gas. Immediately after passing through the bent portion 11, the flowing mist-like mist adheres and grows when passing through the thin plate transmission structure 12. Then, the mist contained in the gas after passing through the thin plate permeable structure 12 becomes very small, and when this gas passes through the bending portion 13 near the downstream side of the thin plate permeable structure 12, part of the mist is caused by inertial force. Are further adhered to the duct wall, so that the amount of mist contained in the air body after passing through the curved portion 13 is very small. The large mist adhering to the duct wall of the upstream bent portion 11 flows down and enters the thin plate permeable structure 12, where it becomes a large water droplet together with the mist that has adhered and grown, and this water droplet drips and falls. It flows along the bottom of the bent portion 13, and is drained from the drain port 14 at the bottom of the bent portion 13. Thus, the mist separation efficiency is significantly improved.

[0009]

Embodiment An embodiment of the mist separating device of the present invention will be described with reference to FIG. This embodiment is applied to an air supply duct of an air-conditioning system of a helicopter, and a honeycomb 12 'is provided in the downstream of the curved portion 11' of the air supply duct 10 'in parallel with the air flow, and the flow passage is immediately formed. A honeycomb 12 'is stretched in the cross section, a bent portion 13' is provided in the vicinity of the downstream of the honeycomb 12 ', a drain port 14 is provided at the bottom of the bent portion 13', and drainage is performed at the drain port 14 '. A hose 15 is provided.

According to the mist separating device of the embodiment configured as described above, when the air flowing through the air supply duct 10 ′ passes through the bent portion 11 ′, a large mist adheres to the duct wall due to inertial force. When passing through the bent portion 11 ′ and immediately after passing through the honeycomb 12 ′, the mist that flows with air adheres to the thin plates forming the honeycomb 12 ′ and grows. Then, the mist contained in the air after passing through the honeycomb 12 ′ becomes extremely small, and when this air passes through the curved portion 13 ′ near the downstream of the honeycomb 12 ′, a part of the remaining mist is further increased by the inertial force. Since it adheres to the duct wall, the amount of mist contained in the air after passing through the bent portion 13 'is very small. The large mist adhering to the duct wall of the upstream bend 11 'flows down and enters the honeycomb 12', where it becomes a large water droplet together with the mist that has adhered and grown, and this water droplet drops down to the downstream side. The water flows along the bottom of the bent portion 13 ', and is drained through the drain hose 15 from the drain port 14' at the bottom of the bent portion 13 '. Thus, the mist separation efficiency is significantly improved.

In the above embodiment, the thin plate transmission structure provided downstream of the bent portion 11 'of the air supply duct 10' is a honeycomb 12 'having hexagonal cells, but the present invention is not limited to this. Instead, it may be a honeycomb shape having square cells or triangular cells, or may be a flat plate arranged in parallel.

[0012]

[Effect of device]

 As described above, according to the mist separating device of the present invention, the mist can be efficiently separated from the gas flowing through the gas supply duct. In addition, unlike the conventional case, it is not necessary to change the outer dimensions of the duct, maintenance is not required as in the case of an air filter, and the pressure loss is small. Furthermore, the thin plate permeable structure rectifies the flow of air.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a mist separating device of the present invention.

FIG. 2 is a view showing an embodiment of the mist separating device of the present invention.

FIG. 3 is a diagram showing one of conventional methods for separating mist from gas.

FIG. 4 is another one of the conventional methods for separating mist from gas.
FIG.

FIG. 5 is a view showing still another method of separating mist from gas in the related art.

[Explanation of symbols]

 10 Gas Supply Duct 10 'Air Supply Duct 11, 11' Bent Part 12 Thin Plate Permeation Structure 12 'Honeycomb 13, 13' Bent Part 14, 14 'Drainage Port

Claims (3)

[Scope of utility model registration request] 1. A thin plate permeable structure is provided downstream of a bent portion of a gas supply duct in parallel with a gas flow, a bent portion is provided in the vicinity of the downstream of this thin plate permeable structure, and drainage is provided at a bottom portion of the bent portion downstream. Mist separation device with a mouth. 2. The mist separating device according to claim 1, wherein the thin plate transmission structure has a honeycomb shape having hexagonal, rectangular or triangular cells. 3. The gas supply duct is an air supply duct of an air conditioning system of an aircraft.
The mist separation device described.