JPH0751142Y2 - Dehumidifier - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field of the Invention The present invention is mainly used for power equipment and other equipment installed in the operation panel and facility equipment to be installed outdoors. The present invention relates to a dehumidifying device that prevents damage such as rust and electric leakage that occur in electrical contacts, etc.

2. Description of the Related Art Conventional dehumidifiers for electric power equipment of this type are disclosed, for example, in Japanese Utility Model Publication No. 61-1.
The structure is as described in Japanese Patent No. 3623, etc., and it was installed in an electric power operation panel installed outdoors or in a connection terminal box. The appearance was as shown in FIG. Further, the structure is, for example, as shown in FIG.

A conventional dehumidifying device of this type will be described below with reference to FIG.

That is, an electronic refrigeration element (hereinafter referred to as a Peltier effect element)
The cooling surface and the heat radiating surface of 1 are thermally connected to the cooling heat exchanger 2 and the heat radiating heat exchanger 3, respectively, and by energizing and driving the Peltier effect element 1, the heat exchange for cooling is performed. The container 2 and the heat dissipation heat exchanger 3 are cooled and heated. Furthermore, these Peltier effect elements 1, heat exchanger for cooling
2. The heat radiating heat exchanger 3 is incorporated in a cylindrical body case 4. The main body case 4 also constitutes a wind circuit, an intake port 5 is installed in the lower part thereof, and an exhaust port 6 is provided in the upper part of the main body case 4. And exhaust port 6
Was provided with a blower 7 in order to improve the air circulation efficiency.

Therefore, the high-humidity air sucked in through the intake port 5 is cooled to below the dew point temperature by the cooling heat exchanger 2 and is condensed on the surface of the cooling heat exchanger 2. The air after the dehumidification and drying is exhausted and circulated in the power board through the exhaust port 6 by the blower 7. After that, by repeating this circulation, the absolute humidity in the limited space (in the power panel) is lowered. The dehumidified water (drain water) that has condensed on the surface of the cooling heat exchanger 2 is dropped on the water tray 8 and discharged to the outside of the power panel by the drain pipe 9.

Further, on the outer surface of the body case 4, a humidity sensor 10 for detecting humidity in the power board is installed. This humidity sensor 10
The control circuit for driving the water and the power supply circuit 11 for driving the Peltier effect element 1 were provided below the water receiving tray 8. Then, the humidity sensor 10 measures the humidity inside the power panel, and by driving the Peltier effect element 1 only when the humidity is high,
It realized intermittent operation.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above dehumidifying device, since the dehumidifying device is integrated, the work at the time of installation is easy, but there are the following problems.

First, the dehumidified water may drop on the power supply circuit 11 or the like. Further, due to the Peltier effect element 1, water droplets condensed on the inner surface of the cooled main body case 4 may still drop on the power supply circuit 11.

Secondly, the heat generated by the power supply circuit 11 heats the air taken in through the cooling heat exchanger 2 and the intake port 5 to lower the dehumidifying effect.

Thirdly, when it is installed on an existing power supply panel or the like, there are cases where it cannot be installed because the main body case 4 becomes large. Further, since the air is installed in an empty space, the effect of the dehumidifying device may be reduced by half because the dry air does not reach the place where the dehumidifying and drying should be most necessary.

Fourth, since the dehumidification sensor 10 is installed in the main body case 4, it is easily affected by heat generated by the Peltier effect element 1 and the power supply circuit 11. In addition, there is a problem that the humidity near the important electrical parts that should be controlled most is not measured.

The present invention solves the above-mentioned conventional problems by providing a dehumidifying function,
An object of the present invention is to provide a dehumidifying device which prevents mutual adverse effects of the control function and the temperature detecting function and can be arbitrarily installed.

Means for Solving the Problems The present invention solves the problems found in the above-described conventional dehumidifiers, and is for cooling that is thermally connected to the cooling surface and the heat radiating surface of an electronic refrigeration element (Peltier effect element), respectively. A heat exchanger and a heat radiating heat exchanger are provided, a dehumidifying function unit that keeps the cooling heat exchanger temperature below the dew point temperature by the electronic refrigeration element, and a humidity detecting function unit that detects humidity in the air, The electronic cooling element is provided with a control function that controls the amount of electricity to the electronic cooling element by the output of the power source circuit and the humidity detection function section, and the control function section that controls the operation of the dehumidifier is provided. The functional unit is composed of three independent units, and the functional units are connected by electric wires.

By such means, the dehumidifying device of the present invention performs the following actions.

That is, for example, the humidity detecting unit detects the humidity in the operation panel and the power panel of the power equipment, and when the humidity is high, the electronic refrigerating element is energized to drive a current to cool the electronic refrigerating element. The heat exchanger for use below the dew point temperature. As a result, the absolute humidity in the operation panel and power supply panel is kept low. When it becomes low humidity after operation,
It stops the electric current.

The dehumidifying function unit, the humidity detecting function unit, and the control function unit are each configured as an independent unit, and each function unit is connected by an electric wire, so that dehumidifying water does not reach the control function unit and The dehumidification function section is not heated by the heat generated by the section, humidity detection can be performed at an optimum place, and each function section can be arbitrarily installed by utilizing an empty space or the like.

Embodiment A dehumidifying device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

First, the configuration will be described with reference to FIG.

In FIG. 1, reference numeral 12 denotes a humidity detecting function section, which is composed of a humidity sensor 10. Reference numeral 13 denotes a dehumidification function unit, which is composed of a Peltier effect element 1, a cooling heat exchanger 2, a heat radiation heat exchanger 3, a main body case 4, a blower 7, and the like. Reference numeral 14 is a control function unit, which includes a power supply circuit 11 and a drive circuit for the humidity sensor 10. The humidity detecting function unit 12 and the dehumidifying function unit 13 are connected to the control function unit 14 by crossover wires 15 and 16.

Here, the humidity detection function unit 12 is composed of a humidity-capacity change type humidity sensor, and in a power supply panel, an operation panel for power (not shown), etc., a location where the humidity failure occurs most,
It is installed in an important place for equipment. From the humidity detection function unit 12, it is connected to the control function unit 14 by a connecting wire of about 1 m. Further, as shown in detail in FIG. 2, the dehumidifying function section 13 is such that the cooling surface and the heat radiation surface of the Peltier effect element 1 are thermally different from the cooling heat exchanger 2 and the heat radiation heat exchanger 3, respectively. The surface temperature of the cooling heat exchanger 2 is cooled to a temperature equal to or lower than the dew point temperature by being electrically connected to the Peltier effect element 1 by being connected.

Further, the Peltier effect element 1, the cooling heat exchanger 2 and the heat radiation heat exchanger 3 are incorporated in a cylindrical body case 4. This body case 4 also constitutes a wind circuit,
An intake port 5 is installed in the lower part, and an exhaust port 6 is provided in the upper part of the main body case. The exhaust port 6 is provided with a blower 7 for improving the air circulation efficiency.

The high-humidity air sucked through the intake port 5 in the above-described configuration is cooled to a temperature below the dew point temperature by the cooling heat exchanger 2 and condensed on the surface of the cooling heat exchanger 2 to reduce the humidity. The air after the dehumidification and drying is exhausted and circulated in the power board through the exhaust port 6 by the blower 7. After that, by repeating this circulation, the absolute humidity of the limited space (in the power supply panel) is lowered.

The dehumidified water (drain water) that has condensed on the surface of the cooling heat exchanger 2 is dropped on the water tray 8 and discharged to the outside of the power panel by the drain pipe 9. Also, like the humidity detection function unit 12,
The dehumidification function unit 13 is connected to the control function unit 14 by a crossover electric wire 16. By appropriately selecting the positional relationship between the dehumidification function unit 13 and the control function unit 14, dehumidification water enters the control function unit 14, or conversely, the heat generated in the control function unit 14 adversely affects the dehumidification function unit 13. It is possible to prevent giving.

Here, when the power supply panel and the operation panel are installed outdoors, it is preferable to install the humidity detection function unit 12 in a place where the influence of humidity is most noticeable or inside the panel surface that is easily affected by temperature changes. .

On the other hand, the dehumidification function section 13 is installed at a position where the dry air after dehumidification is intensively discharged from the exhaust port 6 to the relay contact, which is important in the conventional panel and has a humidity disturbance. The control function unit 14 was installed in any direction in the empty space inside the power panel and operation panel.

As described above, the dehumidifying device according to the present invention can not only prevent the problem due to the dropping of water droplets from the dehumidifying cooling part on the electric circuit part such as the power supply part and the control part, which is a conventional problem, but also the humidity sensor. It is possible to prevent the influence of the heat radiation of the Peltier effect element against. Further, since the intake air before dehumidification is not affected by heat radiation from the power supply circuit, the dehumidification effect can be improved as compared with the conventional configuration. Further, since the humidity sensor is separated from the main body case by the crossover wire, it can be installed at a place where humidity is the most problematic, so that the operation control of the dehumidifier can be realized with much higher precision and accuracy than ever before. In addition, there are few restrictions on the installation space, and the effect of increasing installation opportunities can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of a dehumidifier according to an embodiment of the present invention,
FIG. 2 is a cross-sectional configuration diagram of a dehumidifying function section in the dehumidifying device,
FIG. 3 is an external view of a dehumidifying device in a conventional example, and FIG. 4 is a sectional configuration diagram of the dehumidifying device. 1 ... Peltier effect element, 2 ... Cooling heat exchanger, 3 ...
… Heat dissipation heat exchanger, 12 …… Humidity detection function part, 13 …… Dehumidification function part, 14 …… Control function part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masanori Ogawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A dehumidification function section in which a cooling heat exchanger and a heat radiation heat exchanger that are thermally connected to a cooling surface and a heat radiation surface of an electronic refrigeration element (Peltier effect element) are installed in a cylindrical unit. And a humidity detection function unit that detects the humidity in the air,
The electronic refrigeration element has a control function that controls the amount of electricity to the electronic refrigeration element by the output of the power supply circuit and the output of the humidity detection function section, and is composed of a control function section that controls the operation of the dehumidifier. Is a dehumidifying device in which each functional unit is connected by electric wires.