JPS63151334A - Drain trap for gas dehumidifier - Google Patents

Abstract

PURPOSE:To always discharge drain stably and continuously, by heating the interior of a drain trap by a heating device and providing an opening part for leaking a small amount of gas to the upper part in the drain trap. CONSTITUTION:The drain D from an electric dehumidifier 1 flows in a drain trap 4 along with a part of sample gas and once falls on a plate 5b. Said drain D is heated by the plate 5b and the dust in the drain D remains on the plate 5b as it is and only the drain D is evaporated to be gradually discharged from an opening part 6a along with the sample gas through a capillary 6. The dust remaining on the plate 5b can be simply removed when the plate 5b is constituted so as to be detached from the drain trap 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drain lamp used in various gas dehumidifiers, such as electronic dehumidifiers used in gas analyzers and the like.

[Conventional technology]

As shown in FIG.
is allowed to hang down inside the drain trap 4, and the drain D accumulated inside the drain trap 4 is drained through the upper opening 11.
Structures that allow direct overflow from are known. However, with this structure, there is a limit to the pressure of the sample gas, so it is not suitable when the pressure of the sample gas must be increased for long-distance pressure feeding or to improve dehumidification efficiency.

Therefore, for relatively high-pressure sample gas, the liquid level of the drain D is detected by the liquid level detector 12 installed inside the drain trap 4, as shown in FIG. 13 to open the solenoid valve 14, and the drain discharge pipe 1 connected to the lower part of the drain trap 4.
5 has a structure in which the drain D is directly discharged, or the one in Fig. 4 tc
As shown in +, a throttle valve 16 is placed below the drain trap 4.
A structure is known in which a drain discharge pipe 15' having a drain discharge pipe 15' is connected in communication and drain D is slowly discharged from the drain discharge pipe 15'.

[Problem that the invention seeks to solve]

However, with the BLO type shown in Fig. 4, it is not possible to connect the drain outlet 2 of the dehumidifier I and the drain trap 4 to avoid the accumulation of gas in the pipe 3 and the dehumidifier 1, and furthermore, the drain There is a drawback that pressure fluctuations and pressure drops occur in the sample gas when the tren D is forcibly discharged from the discharge pipe j5, which causes an error in the reading of the gas analyzer connected downstream.

Furthermore, the one shown in FIG. 4 fcl has the disadvantage that the original drain discharge function is inhibited, such as the throttle valve 16 being blocked by dust or blocked by freezing of the drain D in cold regions.

The present invention aims to eliminate such conventional drawbacks.

[Means for solving problems]

To achieve this objective, the drain trap according to the invention is configured to heat the inside of the drain trap by means of a heating device, and has an opening above the inside of the drain trap that allows a small amount of gas to leak out. Features.

[Effect]

As described above, since the inside of the drain lamp is heated by the heating device, the drain in the drain trap is heated and evaporated, and the dust remains at the bottom of the drain lamp. The evaporated condensate is then slowly discharged along with the sample gas from the opening that opens upward inside the drain trap, so that the gas is inside the pipe that connects the dehumidifier's drain outlet and the drain lamp, and inside the dehumidifier. The dust will not accumulate in the air, and the drain discharge pipes will not be clogged with dust. Furthermore, since the drain is discharged as high-temperature steam, there will be no blockage due to freezing of the drain, even in cold regions.

〔Example〕

An embodiment of the present invention will be described based on the drawings. FIG. 1 is a schematic explanatory diagram showing one embodiment, in which a flexible pipe 3 such as a hose is connected to a drain outlet 2 of an electronic dehumidifier 1. The other end of the pipe 3 communicates with the inside and upper part of the drain trap 4.

A heating device 5 consisting of a heater 5a and a plate 5b is disposed inside the drain trap 4 to heat the inside of the drain trap 4 (eg, 50 to 60°C).
An aperture 6 such as a capillary is connected to an opening 6a provided above inside the drain trap 4, and a small amount of gas is leaked from the opening 6a. .

Therefore, according to this configuration, the drain D from the electronic dehumidifier 1 flows into the drain trap 4 together with a portion of the sample gas, and once falls onto the plate 5b.

Then, the dust in the drain D remains on the plate 5b as it is heated by the plate 5b, and only the drain D is evaporated and gradually discharged together with the sample gas through the capillary 6 from the opening 6a. . Further, the dust remaining on the plate 5b is removed from the plate 5b.
By configuring it so that it can be removed from the drain trap 4, it can be easily removed.

FIG. 2 is a schematic explanatory diagram showing another embodiment, and the difference from the one in FIG. 1 is that a heating device 5 such as a heater is placed directly outside the drain trap 4 without using a plate 5b. This is the point. As the heating device 5 shown in FIGS. 1 and 2, various types of heaters such as self-temperature control type heaters such as "Posistor" (trade name, manufactured by Murata Manufacturing Co., Ltd.) can be used in addition to ordinary heaters. Since the other configurations are the same as those in FIG. 1, the same reference numerals are given and the explanation thereof will be omitted.

FIG. 3 is a cross-sectional view showing a more specific version of the drain trap of the present invention, in which a socket 7 for connecting the pipe 3 described above is fixed to the upper part of the metal drain trap 4. The bottom 4a and plate 4b of the drain trap 4 are also made of metal and are configured to be detachable with bolts 8. Below the bottom 4a, the above-mentioned "Posister" as the heating device 5 is arranged. This bottom part 4a has an airtight plug 9.
is screwed onto the capillary 6, which is held in communication with the airtight plug 9, and is extended upward so that its opening 6b is connected to the drain trap 4.
It is located inside and above. The sides and top of the drain trap 4 are covered with a heat insulating material 10a, and the bottom of the drain trap 4 is also covered with a heat insulating material 10b that can be attached and removed from below the heating device 5.

Like garbage, the entire drain tube 4 including the heating device 5 is covered with insulation materials 10a, 1. By coating with Ob, the inside of the drain trap 4 can be efficiently heated,
Further, by configuring the heat insulating material 10b covering the bottom, the bottom 4a, and the plate 4b to be removable, it is possible to easily and easily remove dust remaining on the top surface of the plate 4b.

〔Effect of the invention〕

As is clear from the above description, according to the drain lamp of the present invention, there is no accumulation of gas in the pipe connecting the dehumidifier and the drain trap or in the dehumidifier, and there is no possibility of blockage due to dust or even in cold regions. There is no blockage due to drain freezing, and stable continuous draining is possible at all times.

[Brief explanation of the drawing]

1 to 3 show embodiments of the present invention, FIG. 1 is a schematic explanatory diagram, FIG. 2 is a schematic explanatory diagram showing another embodiment, and FIG. 3 is a more specific embodiment. It is a vertical cross-sectional view, and FIG. 4 (
al to FIG. 4(c) are schematic explanatory diagrams showing conventional structures, respectively. 4...Drain trap, 5...Heating device. Figure 1 Figure 4 (C)

Claims (1)

[Claims] A drain trap for a gas dehumidifier, which is configured to heat the inside of the drain trap with a heating device, and has an opening for leaking a small amount of gas into the upper part of the inside of the drain trap.