JPS585961Y2 - Explosion-proof electronically cooled dehumidifier - Google Patents

Description

[Detailed description of the invention] The present invention relates to an explosion-proof electronically cooled dehumidifier that removes moisture from gas that is led to a gas analyzer, etc. More specifically, the present invention relates to an explosion-proof electronically cooled dehumidifier that uses a Beltier effect element. Regarding.

A dehumidifier that utilizes the heat generation phenomenon or heat absorption phenomenon of the Beltier effect element is well known, and its basic configuration is as shown in FIG.

A dehumidifying block 7 made of a heat conductive member is bored to form a flow path and a dehumidifying block 7.
0', and the gas to be measured is guided to a detection section (not shown) of the gas analyzer through these channels.

The flow path 11' is for draining.

The electronic cooler 4 (consisting of a plurality of Bertier effect elements) has its heat absorption part in close contact with the dehumidification block 7, and its heat radiation part is provided with radiation fins C.

A temperature control system (temperature detection element and regulator are not shown) is configured with the electronic cooler 4 as an operating end, so that the temperature of the dehumidifying boot tank T is kept at a constant value.

Recently, there has been a strong demand for an explosion-proof electronically cooled dehumidifier that is based on the above-mentioned configuration and meets explosion-proof standards, but it has not yet been put into practical use.

The present invention has been made in view of the above-mentioned circumstances.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an explosion-proof electronically cooled dehumidifier having an explosion-proof structure, particularly a pressure-resistant explosion-proof structure.

This invention is designed to sandwich the walls of the explosion-proof container and attach it to the inside wall of the container.
It is characterized by a structure in which the heat dissipation part of the electronic cooler made of a Beltier effect element is installed closely, and the cooler is installed closely behind the wall, that is, on the outside of the container.

The present invention will be explained in detail below with reference to the drawings.

FIGS. 2A and 2B are diagrams illustrating the configuration of an explosion-proof electronic dehumidifier according to an embodiment of the present invention.

In Fig. 2, Fig. 0 is a sectional view taken along line AA of Fig. A.

The explosion-proof container has a box-shaped container 1 covered with a lid 2, and has a sealed structure using a tightening screw 3, and the tightening screw 3 has a front-tight structure.

The basic parts of the electronic dehumidifier are installed inside the container 1.

That is, the heat dissipation section 6 of the electronic cooler 4 is fixed in close contact with the wall surface of the container 1, and each flow path 9', 1 provided in the dehumidification block 1, which is integrally configured with the heat absorption section 5 of the electronic cooler 4,
0' and 11' can communicate with devices outside the container 1 via pipes 9j10 and 11.

The pipes 9j10 and 11 are integrated with the container 1 and the dehumidifying block 7, and are therefore explosion-proof.Structurally, the pipe walls of the pipes 9, 10, and 11 are connected to the wall of the container 1 and the dehumidifying block 7. It can be treated the same as a wall.

- A storage section 12 for a temperature control system, which uses the electronic cooler 4 as an operating end, is installed near the electronic cooler 4.

The storage section 12 houses a temperature regulator, various switches, a step-down rectifier, etc., which will be described later, and is electrically connected to a temperature sensor (not shown) installed in the dehumidification block 7 and the electronic cooler 4. .

The electrical connection between this storage section 12 and devices etc. outside the container 1 is as follows.
This is done via an explosion-proof terminal box 13.

Further, a water cooler 8 is installed outside the container 1 in close contact with the wall surface of the container 1, and is tightly thermally coupled to the heat radiation part 6 of the electronic cooler 4, so that cooling water circulates through the precooler 8. This makes it possible to effectively dissipate heat from the heat dissipation section 6 of the electronic cooler 4.

Next, the temperature control system will be explained with reference to FIG.

The temperature control system is provided to maintain the temperature of the dehumidification block I at a constant value.

The configuration of the temperature control system is such that the output of the temperature controller 15 drives the triac switch 16, and the AC 100V power supplied via the triac switch 16 (the power switch 17 is also turned on) is converted to an appropriate value by the step-down rectifier 18. is converted into direct current to obtain the energizing current for the electronic cooler (generally referred to as a thermo module) 4.

The heat absorbing section of the electronic cooler 4 and the temperature sensing element (thermistor) 14 are thermally coupled to the dehumidification block 7 to form a closed loop of the temperature control system.

The operation of the explosion-proof electronically cooled dehumidifier having the above configuration will be explained below.

1. Water is continuously flowed into the water cooler 8, and the electronic cooler 4
If the heat dissipation of the heat dissipation part 6 is done in a circular shape, the heat absorption part 5
The cooling effect of the dehumidifying block 7 is performed stably, and the dehumidifying block 7 is reliably cooled.

Moreover, the temperature of the dehumidifying block 7 is maintained at a constant temperature, for example, 1.5° C., by the function of the temperature control system.

Therefore, the gas introduced from pipe 9 (1.5°C or higher) is cooled to a constant temperature while passing through channels r and 10', and contains water vapor equal to the saturated vapor at that temperature. It is sent to the outside via.

The moisture removed during passage through channels DA and 10' is drawn out from conduit 11 as a drain.

In the above embodiment, a cooler using a refrigerant was provided on the outer surface of the explosion-proof container in order to effectively dissipate heat from the electronic cooler, but the present invention is not limited to this.

A radiation fin may be provided in place of the cooler, or the outer surface of the explosion-proof container itself may have a radiation fin structure.

As explained in detail above, according to the explosion-proof electronically cooled dehumidifier according to the present invention, an electronic cooler, a temperature controller, a dehumidifying block, etc. are arranged in an explosion-proof container (sealed container), and the electronically cooled This structure effectively dissipates heat from the outside of the explosion-proof enclosure, which stabilizes the operation of the electronic cooler and suppresses the temperature rise on the outer surface of the explosion-proof enclosure. Be sure not to exceed the specifications.

The housing, gas flow path, and drain flow path are integrated with the explosion-proof container and dehumidification block, so there is no danger of hazardous atmosphere (
The inside of the flow path) and the inside of the explosion-proof container (electronic circuit housing part) can be completely separated5, so there is no need to equip the explosion-proof container with a flame arrester.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the configuration of a conventional electronically cooled dehumidifier;
Figure 9 is an explanatory diagram of an explosion-proof electronically cooled dehumidifier according to an embodiment of the present invention, and Figure 3 is an explanation of the configuration of a temperature control system of an explosion-proof electronically cooled dehumidifier according to an embodiment of the present invention. It is a diagram. 1... Container, 2... Lid, 3...
・Tightening screw, 4...Electronic cooler, 5...
・Heat absorption section, 6...Dissipation, heat section, 1...Dehumidification block 4.8...Water cooler, 9.10.11
......, conduit, 9', 10', 11'-...
・Flow path drilled in the dehumidification block, 12...Electronic circuit storage section, 13...Explosion-proof terminal box.

Claims (1)

[Scope of utility model registration request] an electric cooler having a plurality of Bertier effect elements sandwiched between a heat absorption part and a heat radiation part; a first flow path into which gas to be dehumidified is introduced; A dehumidifying block is provided, in which a second flow path is formed to lead out and a third flow path through which the removed moisture is discharged as a drain, and a cable is thermally connected to the heat absorption part. A storage section in which a temperature control system for controlling temperature using the electronic cooler as an operating end is housed in the electronic cooling type dehumidifier;
When the electronic cooler is housed inside so as to be tightly thermally connected to the heat dissipation part, the inner wall part may be located at a predetermined part of the interior near the electronic cooler. a box-shaped container in which a storage section is stored; a lid that covers a part of the opening of the container and keeps the inside of the container in a sealed structure by tightening; and an outer wall of the container that is used for heat dissipation. a cooler that is installed in close contact with a part facing the part and that cools the heat radiating part with cooling water flowing through an internal flow path, or a radiating fin type cooler that has heat radiating fins and cools the heat radiating part, and the airtight structure An explosion-proof electronic cooling dehumidifier characterized by having a pressure-resistant explosion-proof structure.