JPH07185248A - Absorbing apparatus - Google Patents

Abstract

PURPOSE:To continuously carry out adsorption on/desorption from an adsorbent and at the same time effectively carry out the adsorption by the adsorbent and desorption/reproduction of the adsorbent in an adsorbing apparatus such as a dehumidifier, etc. CONSTITUTION:An object gas to be treated is reciprocally supplied to and discharged out of chambers 2, 3 filled with a pressure swinging-type adsorbent 7 by a four-way switching valves 6, 6a to carry out adsorption in one chamber and desorption from/reproduction of the adsorbent in the other chamber. A Peltier element 4 is installed wherein the element cools the chamber where adsorption is carried out and heats the chamber where desorption from/ reproduction of the adsorbent is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorbing device used for a dehumidifying device applied to an environmental testing device, a biological culture device, a plant cultivation device and the like which requires humidity control.

[0002]

2. Description of the Related Art An example of a conventional dehumidifying device using an adsorbent is shown in FIG. The chamber 02 filled with the adsorbent 07 is connected to the dehumidification target space 01, the air in the space 01 is sucked by the pump 08 and supplied into the chamber 02 from one end of the chamber 02, and the air forms a layer of the adsorbent 07. When passing, dehumidification is performed and the dehumidified air is discharged to the space 01. Incidentally, reference numeral 09 in FIG. 3 denotes an adsorbent exchange port provided in the chamber 02.

[0003]

In the above conventional dehumidifying device, when the adsorbent in one chamber is saturated, further dehumidification cannot be performed, so the adsorbent is periodically replaced. Had to do. For this reason, the mounting position of the dehumidifying device to the mother machine has been limited to the position where the adsorbent can be replaced during operation. Moreover, the time for which the dehumidifying operation can be performed by one replacement is limited, and if it is attempted to extend the time, it is necessary to increase the adsorbent storage amount, and it is possible to avoid the enlargement of the chamber and the enlargement of the dehumidifier. There was a problem of not having.

The present invention intends to provide an adsorption device which can solve the above problems.

[0005]

SUMMARY OF THE INVENTION The adsorption device of the present invention comprises two chambers filled with a temperature swing type adsorbent and connected in series, and the gases to be adsorbed are alternately supplied to the two chambers to be treated gas. A switching device in which one chamber is supplied with an adsorption chamber and the other chamber is used as a desorption / regeneration chamber; and a chamber arranged between the two chambers, which receives forward and reverse currents to cool the one chamber. A Peltier element for heating the other chamber is provided.

[0006]

In the present invention, the gas to be processed is alternately supplied to the two chambers, so that one of the two chambers to which the gas to be processed is supplied adsorbs the component gas in the gas to be processed. In the other chamber, desorption of the adsorbed gas from the adsorbent and regeneration of the adsorbent are performed in parallel.
When the adsorbent in one of the chambers is saturated, the switching means is switched to supply the gas to be processed to the other chamber, and the adsorption of the component gas in the gas to be processed in the other chamber is performed by the switching means. Desorption of the gas adsorbed in the chamber from the adsorbent and regeneration of the adsorbent are performed in parallel. In this way, in each chamber, the adsorption step and the desorption / adsorbent regeneration step are alternately carried out in parallel, and long-term operation is possible without exchanging the adsorbent.

Further, by passing a current in the forward or reverse direction of the Peltier element arranged between the two chambers, one of the chambers that is adsorbing is cooled to perform desorption and regeneration of the adsorbent. By heating the other chamber, the adsorption by the temperature swing type adsorbent, the desorption from the adsorbent and the regeneration of the adsorbent are surely performed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the dehumidifying device of the present invention will be described with reference to FIGS. FIG. 1 shows a state where one chamber is operating in a dehumidifying mode and the other chamber is operating in a desorption / adsorbent regeneration (hereinafter referred to as regeneration) mode. FIG. 2 shows the one chamber in a regeneration mode and the other chamber. Shows the state of operating in the dehumidification mode.

Reference numerals 2 and 3 denote two chambers that are filled with a temperature swing type adsorbent 7 for dehumidification and that are vertically adjacent to each other. One side of the chambers 2 and 3 (on the left side in the figure). Pipe lines 22 and 23 are connected to each other, and pipe lines 26 and 27 are connected to the other sides of the chambers 2 and 3 (on the right side in the drawing). The chambers 2 and 3 are housed in the heat insulating case 10. There is. The dehumidification target space 1 is connected to a suction pipe line 21 having a suction pump 8 and a blowing pipe line 25. Further, the pipe 20 having the pump 8a for sucking the outside air and the pipes 21, 22, 23 are connected to the four-way switching valve 6, and the four-way switching valve 6 connects the pipes 20, 21 to the pipes 22, 23, respectively. To connect to any of the.
In addition, the conduit 24 connected to the outside air and the conduits 25, 2
6, 27 are connected to the four-way switching valve 6a
a connects the conduits 24 and 25 to either of the conduits 25 and 26, respectively.

The partition between the chambers 2 and 3 has a built-in Bertier element 4 in which a current flows from the power source 5 in both the forward and reverse directions. A humidity sensor 11 is provided near the inlet and the outlet of the conduit 25.

In this embodiment, the four-way switching valves 6 and 6a are shown in FIG.
When operated to the position shown in (1), the air in the dehumidification target space 1 is introduced into the chamber 2 by the pump 8 and the four-way switching valve 6, and the outside air is introduced into the chamber 3 by the four-way switching valve 6a.

The Bertier element 4 built in the partition between the chamber 2 and the chamber 3 cools the chamber 2 side by the electric power supplied from the power source 5 and heats the chamber 3 side by the exhaust heat thereof. To work.

Therefore, the air in the dehumidification target space 1 passing through the chamber 2 is cooled, so that the adsorption of moisture in the air to the temperature swing type adsorbent 7 is promoted.
Further, the temperature swing type adsorbent 7 in the chamber 3 is heated, so that the absorbed moisture is desorbed from the adsorbent 7 and released to the outside air to promote desorption / regeneration.

If this state continues, the adsorbent 7 will be saturated in the chamber 2 soon, and there will be almost no difference in the humidity value indicated by the humidity sensor 11 installed near the inlet and outlet of the space 1 to be dehumidified. Therefore, as shown in FIG. 2, the flow paths of the four-way switching valves 6 and 6a are switched, and the polarity of the power source 5 is switched to allow a reverse current to flow in the Peltier element 4. As a result, the chamber 2 is heated and regenerated, and the chamber 3 is cooled and dehumidified.

As a result, the adsorbent 7 in the chamber 2 is regenerated, while the adsorbent 7 in the chamber 3 regenerated in the state shown in FIG. 1 dehumidifies.

If this state continues, the adsorbent 7 in the chamber 3 will eventually be saturated, but in this case, the state shown in FIG. 1 is switched again to continue dehumidification and regeneration.

Further, the chamber 2 and the chamber 3 are housed in a heat insulating case 10 to cool / cool the Peltier element 4.
The heating efficiency can be maximized.

Further, since the Peltier element 4 uses the exhaust heat of the cooling side to heat the heating side, the energy used can be reduced.

[0019]

As described above, the dehumidifying device of the present invention can exert the following effects. (1) Since the adsorbent can be reused and can be continuously adsorbed by switching the adsorption / regeneration between the two chambers, the amount of adsorbent stored in the chamber can be kept to the required minimum. The effect is to reduce the size and weight of the chamber and the dehumidifier. (2) Since the Peltier element is used to heat by utilizing the exhaust heat on the cooling side, it has the effect of reducing the energy used compared to a device that uses a combination of a cooling device and a heating device, and also uses a temperature swing type adsorbent. Adsorption, desorption of adsorbed gas from the adsorbent, and regeneration of the adsorbent can be effectively performed. (3) Since it is virtually unnecessary to replace the adsorbent during operation,
The attachment position of the dehumidifier to the mother device can be freely set.

[Brief description of drawings]

1 is a structural diagram of an embodiment of the present invention, a chamber 2
Indicates a dehumidification mode, and the chamber 3 is in a regeneration mode.

FIG. 2 is a structural diagram of the embodiment, showing a state where the chamber 2 is in a regeneration mode and the chamber 3 is in a dehumidification mode.

FIG. 3 is a structural diagram of a dehumidifying device using a conventional adsorbent.

[Explanation of symbols]

 1 Dehumidification target space 2 Chamber 3 Chamber 4 Peltier element 5 Power supply 6,6a Four-way switching valve 7 Adsorbent 8,8a Pump 10 Thermal insulation case 11 Humidity sensor 20-27 Pipe line

Claims (1)

[Claims] 1. Two adsorption chambers, which are filled with a temperature swing type adsorbent and are connected in series, and one chamber to which the gas to be adsorbed is alternately supplied and the gas to be treated is supplied is an adsorption chamber. A switching device that uses the other chamber as a desorption / regeneration chamber, and a Peltier element that is arranged between the two chambers and that cools the one chamber and heats the other chamber by receiving electric currents in forward and reverse directions. An adsorption device characterized in that