JPH0712913Y2 - Gas humidifier - Google Patents

Description

[Detailed Description of the Invention] {Industrial application field} The present invention relates to a gas humidifier for humidifying a combustion gas of an automobile or other gas when analyzed by an analyzer. is there.

{Prior Art} As a humidifier for a gas for a sample as described above, for example, one shown in FIG. 3 is known.

In FIG. 3, 31 is a humidifier, which is a closed water tank 32.
A proper amount of water 33 is injected into the water tank 33, and each end of the gas supply pipe 34 and the gas delivery pipe 35 is connected to the upper part of the water tank 32 above the water 33.

Reference numeral 36 is a constant pressure trap arranged horizontally side by side with the humidifier 31, which is constructed by injecting water 38 into a sealed container 37, and this container 37 is connected to the bottom of the water tank 32 by a connecting pipe 39. The humidifier 31 and the constant pressure trap 36 have the same water level. Reference numeral 40 is an overflow pipe of the constant pressure trap 36, one end of which is inserted into the water 38. Reference numeral 41 denotes an exhaust pipe provided at the upper end of the constant pressure trap 36, which is connected to the harmful substance separation device 42.

43 is a dehumidifier such as an electronic dehumidifier, to which the gas delivery pipe
35 is connected to the on-off valve 44 via a pump 45. Reference numeral 46 denotes a drain pipe of the dehumidifier 43, the end portion of which is connected to the lower portion of the constant pressure trap 36 to maintain the sample gas at a constant pressure. Reference numeral 47 denotes an air supply pipe provided in the dehumidifier 43, which is connected to an analyzer 49 via a capillary 48.

This gas humidifier supplies a sample gas to a water tank 32 of a humidifier 31 through a gas supply pipe 34, and the sample gas humidified in the water tank 32 is driven by a pump 45 to a dehumidifier 43 by a gas delivery pipe 35. To send to. The sample gas dehumidified by the dehumidifier 43 is supplied to the analyzer 49 through the air supply pipe 47 and analyzed.

On the other hand, the drain generated in the dehumidifier 43 is sent to the constant pressure trap 36 by the drain pipe 46 to prevent the water 33 in the water tank 32 from decreasing.

In addition, the constant pressure trap 36 becomes bubbles from the drain pipe 46.
The gas that has floated to the upper part of is discharged through the exhaust pipe 41.

{Problems to be Solved by the Invention} In the conventional gas humidifier, the drain pipe 46 is connected to the constant pressure trap 36, and the constant pressure trap 36 and the humidifier 31 are provided.
And are connected by a connecting pipe 39.

Therefore, the exhaust pipe 41 of the constant pressure trap 36 is clogged,
When the exhaust of the constant pressure trap 36 becomes insufficient or impossible due to a bending or a failure of the harmful substance separation device 42, the amount of gas in the constant pressure trap 36 increases, and the constant pressure trap 36 is discharged at that pressure.
Water 38 flows from the connecting pipe 39 to the water tank 32 of the humidifier 31,
32 water 33 increases. Therefore, there is a problem that the water 33 in the water tank 32 may flow into the gas supply pipe 34 and the gas delivery pipe 35.

The present invention solves the above problems,
Even if it becomes difficult or impossible to evacuate the constant pressure trap, the back pressure of the constant pressure trap does not rise above a certain level, and the water in the humidifier does not increase above a certain level. The purpose is.

{Means for Solving the Problems} In the gas humidifier of the present invention, the humidifier and the constant-pressure trap are arranged horizontally side by side, and a connection pipe for communicating the liquids of the both is provided, and The drain pipe is connected to a constant pressure trap, each end of the gas supply pipe and the gas delivery pipe is connected to the upper part of the humidifier, and the other end of the gas delivery pipe is connected to the dehumidifier, One end of the pipe is connected to a constant pressure trap, the other end is inserted into the humidifier, and is discharged outside the humidifier above the liquid level of the humidifier and below the gas supply pipe and the gas delivery pipe. The connection pipe is provided with a liquid passage hole for communicating the liquid therein and the liquid in the humidifier.

Further, the end of the connecting pipe inserted into the humidifier is opened in the humidifier, and the liquid of the humidifier overflows or the gas flowing through the connecting pipe is guided to the outside of the humidifier. Insert the end of the connecting pipe into the end of the outlet pipe inserted in the humidifier above the liquid level and below the gas supply pipe and the gas delivery pipe, and connect to the inner surface of the outlet pipe. It is characterized in that a slight space is provided between the outer surface of the tube and the tube.

In the configuration in which the end of the connecting pipe is inserted into the outlet pipe, the connecting pipe allows the liquid or gas of the constant pressure trap to flow into the humidifier, and the outlet pipe overflows the liquid of the humidifier or the gas of the constant pressure trap is connected. Since the gas is discharged to the outside of the humidifier when flowing through the pipe, the connecting pipe inside the humidifier and the end of the discharge pipe will not come out of this liquid even if opened in the liquid of the humidifier. You may make it open.

{Action} In this gas humidifier, the sample gas supplied to the humidifier is humidified in the humidifier and sent to the dehumidifier, and dehumidified by the dehumidifier before being supplied to the analyzer and the like. It is a thing.

The drain of the dehumidifier is sent to a constant pressure trap by a drain pipe. This constant pressure trap communicates with the humidifier through the connection pipe and the liquid passage hole provided in the connection pipe or the connection pipe, so the drain in the constant pressure trap becomes the replenisher for the humidifier, and the liquid in the humidifier is Prevent it from decreasing.

When the gas in the constant pressure trap is not discharged or becomes difficult to discharge, the liquid in the constant pressure trap flows from the connecting pipe to the humidifier side due to the pressure of the gas, but the end of the connecting pipe is In the configuration that is discharged to the outside of the humidifier, if the liquid passage hole is made small, the increase of the liquid in the humidifier becomes slower, and a part of the liquid is discharged to the outside of the humidifier by the connecting pipe.
The increase in the amount of liquid in the humidifier is prevented.

Even if the amount of the liquid in the humidifier is increased, when the liquid level reaches the height of the position where the connecting pipe is taken out of the humidifier, the liquid thereafter is discharged from the connecting pipe, and therefore does not increase further.

Even if the amount of liquid flowing into the humidifier from the liquid passage hole is large due to the large size of the liquid passage hole or the gradual increase in the amount of gas in the constant-pressure trap, the position where the connecting pipe is taken out of the humidifier Above the height of, the liquid in the humidifier does not increase.

Further, in the configuration in which the end portion of the connecting pipe is inserted into the outlet pipe in the humidifier and a slight gap is provided between the inner surface of the outlet pipe and the outer surface of the connecting pipe, water flowing from the constant pressure trap into the outlet pipe is used. However, the amount of water in the humidifier increases, but when the liquid level reaches the height of the position where the lead-out pipe is taken out of the humidifier, the liquid thereafter is discharged through the lead-out pipe, so the amount does not increase further.

In this way, when the liquid in the constant pressure trap is reduced and the mouth of the connection pipe is released from water, the gas in the constant pressure trap is discharged directly from the connection pipe or outside the humidifier via the connection pipe and the discharge pipe. The gas pressure in the constant-pressure trap does not rise any more because it is discharged to.

{Example} An example of the gas humidifier of the present invention will be described with reference to FIG.

In FIG. 1, 1 is a humidifier, which is a closed water tank 2
Is formed by injecting an appropriate amount of water 3 into the upper part of the water 3, and the respective ends of the gas supply pipe 4 and the gas delivery pipe 5 are connected to the upper part of the water tank 2 respectively.

Reference numeral 6 is a constant-pressure trap arranged in a state of being aligned with the humidifier 1 in the horizontal direction, which is constructed by injecting water 8 into a closed container 7 that is deeper than the water tank 2. Reference numeral 9 denotes a connecting pipe which is lower than the surface 8a of the water 8 and has one end connected to the container 7, which is inserted into the water tank 2 from the bottom thereof and is slightly higher than the surface 3a of the water 3. 2 is out. Reference numeral 10 denotes a water passage hole provided as a liquid passage hole in the connection pipe 9 at a position communicating with the water 3, and the water passage hole 10 and the connection pipe 9 are provided.
And the water 3,8 is in communication with.

Reference numeral 11 is an overflow pipe of the constant pressure trap 6, one end of which is inserted into the water 8. Reference numeral 12 denotes an exhaust pipe provided at the upper end of the constant pressure trap 6, which is connected to the harmful substance separation device 13.

Reference numeral 14 is a dehumidifier such as an electronic dehumidifier, to which the gas delivery pipe 5 is connected via an on-off valve 15 and a pump 16. Reference numeral 17 denotes a drain pipe of the dehumidifier 14, the end portion of which is connected to the lower portion of the constant pressure trap 6 to maintain the sample gas at a constant pressure.

18 is an air supply pipe provided in the dehumidifier 14, which is a capillary.
It is connected to the analyzer 20 via 19.

In the gas humidifier configured as described above, a gas for sample or the like is supplied to the water tank 2 through the gas supply pipe 4 and humidified in the water tank 2. The humidified gas is driven by the pump 16 to be sent to the dehumidifier 14 by the gas delivery pipe 5 to be dehumidified, and then supplied to the analyzer 20 via the air supply pipe 18 for analysis.

On the other hand, since the drain generated in the dehumidifier 14 is sent to the constant pressure trap 6 by the drain pipe 17, when the amount of the water 8 increases, the drain is discharged by the overflow pipe 11. Further, when the amount of water in the humidifier 1 is low, the water 8 in the constant pressure trap 6 is supplied to the humidifier 1 from the water passage hole 10 in the connecting pipe 9, so that the water 3 in the water tank 2 is not significantly reduced. Absent. Drain pipe 17
The gas that has become bubbles from above and floated above the constant pressure trap 6 is discharged through the exhaust pipe 12.

When the exhaust pipe 12 becomes clogged or bent, and the exhaust of the constant pressure trap 6 becomes insufficient or impossible, the amount of gas in the constant pressure trap 6 increases, and the water 8 is connected by the pressure. Although it flows toward the humidifier 1 at 9, the end of the connecting pipe 9 is out of the humidifier 1 and the water passage hole 10 of the connecting pipe 9 has a relatively small diameter. The water 3 slowly increases, and the other water is discharged to the outside of the humidifier 1 through the connecting pipe 9. Therefore, the water 3 does not flow into the gas supply pipe 4 or the gas delivery pipe 5.

In addition, due to the large size of the water passage holes 10
Even if the entire amount of water flowing from the connection pipe 9 is accumulated in the humidifier 1, when the water surface 3a reaches the height of the discharge portion 9a of the connection pipe 9, the water flows from the connection pipe 9 and overflows from the water surface 3a. It is never higher than 9a, and the water 3 does not flow into the gas supply pipe 4 or the gas delivery pipe 5.

It is also possible to use the connecting pipe 9 also as the overflow pipe without providing the overflow pipe 11 of the constant pressure trap 6.

FIG. 2 shows another embodiment.

In this embodiment, the end portion of the connecting pipe 9 provided in the constant pressure trap 6 is inserted into the water tank 2 of the humidifier 1, and the end portion is opened in the water 3 of the water tank 2. And the water surface 3a of the water 3
The end of the outlet pipe 21 inserted into the humidifier 1 at a position slightly higher than that of the outlet pipe 21 is opened in the water 3, and the end of the connecting pipe 9 is inserted into the end of the outlet pipe 21. A slight gap is provided between the inner surface of 21 and the outer surface of the connecting pipe 9.

Since the other structure is the same as that of the embodiment shown in FIG. 1,
The same reference numerals are given and detailed description is omitted.

In this gas humidifier, the water 3 of the humidifier 1 and the water 8 of the constant pressure trap 6 communicate with each other through the connecting pipe 9, and the water 8 of the constant pressure trap 6 flows out from the connecting pipe 9 into the outlet pipe 21. It becomes the water 3 of the humidifier 1.

Therefore, when the exhaust pipe 12 stops exhausting the gas, the water pressure 8 of the constant pressure trap 6 is reduced by the gas pressure.
At that time, the water 3a flows into the humidifier 1 and its water surface 3a rises, but when it reaches the height of the discharge portion 21a of the outlet pipe 21, the water 3 is discharged.
Since it overflows from the humidifier 1 to the outside of the humidifier 1, the water 3 does not flow into the gas supply pipe 4 and the gas delivery pipe 5, and the trouble caused thereby is eliminated.

When the amount of the gas in the constant pressure trap 6 increases and reaches the connecting pipe 9, it is discharged from the connecting pipe 9 to the outside of the humidifier 1 through the outlet pipe 21, so that the pressure of the gas does not rise above a certain level. .

{Effect of the device} In the gas humidifier of the present invention, as described above, the connection pipe provided so that the liquid of the humidifier and the constant pressure trap can communicate with each other is connected to the outside of the humidifier directly or through the outlet pipe. .

Therefore, even if the gas discharges in the constant pressure trap, the pressure causes the liquid to flow toward the humidifier through the connecting pipe, and even if the amount of liquid in the humidifier increases, the liquid is successively humidified through the connecting pipe. When the liquid flows out of the humidifier or rises to a fixed position, it flows out of the humidifier through the connecting pipe or the outlet pipe, so it is possible to prevent the liquid from flowing into the pipe for supplying or delivering gas to the humidifier. Therefore, it is possible to prevent the occurrence of troubles caused by the liquid flowing into these pipes.

Further, the gas in the constant pressure trap is also discharged through the connecting pipe when it is increased until it reaches the connecting pipe, so that the pressure increase of this gas can be kept below a certain level.

[Brief description of drawings]

FIG. 1 is a partially sectional front view showing an embodiment of the present invention,
FIG. 2 is a front view in which a part of another embodiment is sectioned, and FIG. 3 is a front view in which a part of a conventional example is sectioned. 1: Humidifier, 3: Water, 4: Gas supply pipe, 5: Gas delivery pipe, 6: Constant pressure trap, 8: Water, 9: Connection pipe, 10: Water passage hole, 14: Dehumidifier, 1
7: Drain pipe, 21: Outlet pipe.

Front page continuation (72) Inventor Masahiko Fujiwara 2 Higashi-cho, Kichijoin-miya, Minami-ku, Kyoto, Kyoto Prefecture Horiba Seisakusho Co., Ltd. (72) Inventor Takao Imaki 2 Higashi-cho, Kichijoin-miya, Minami-ku, Kyoto, Kyoto Inside HORIBA

Claims (2)

[Scope of utility model registration request] 1. A humidifier and a constant-pressure trap are arranged side by side in a horizontal direction, a connecting pipe is provided for communicating the liquids of the both, and a drain pipe of the dehumidifier is connected to the constant-pressure trap. Each end of the gas supply pipe and the gas delivery pipe is connected to the upper part, the other end of the gas delivery pipe is connected to the dehumidifier, one end of the connection pipe is connected to the constant pressure trap, and the other. The end is inserted into the humidifier and is taken out of the humidifier above the liquid level of the humidifier and below the gas supply pipe and the gas delivery pipe. A gas humidifying device, which is provided with a liquid passage hole for communicating with the liquid. 2. A humidifier and a constant pressure trap are arranged side by side in a horizontal direction, a connecting pipe is provided for communicating the liquids of the both, and a drain pipe of the dehumidifier is connected to the constant pressure trap. Each end of the gas supply pipe and the gas delivery pipe is connected to the upper portion, the other end of the gas delivery pipe is connected to the dehumidifier, one end of the connection pipe is connected to a constant pressure trap, In order to open the other end in the humidifier and to overflow the liquid of the humidifier or to guide the gas flowing through the connecting pipe to the outside of the humidifier, the gas supply pipe and the gas are provided above the liquid level of the humidifier. The other end of the connecting pipe is inserted into the outlet pipe inserted into the humidifier below the delivery pipe, and there is a slight gap between the inner surface of the outlet pipe and the outer surface of the connecting pipe. A characteristic gas humidifier.