JPH05119004A - Water-supply device of constant-temperature high-humidity bath - Google Patents

Abstract

PURPOSE:To obtain a water-supply device of a constant-temperature high- humidity bath which can perform a highly accurate moisture control by suppressing generation of mold in a wick pan and enabling a moisture sensor to function properly. CONSTITUTION:This water-supply device is provided with a water tank 7 which is provided on an upper part of a case 2 of a constant-temperature high-humidity bath 1 which controls an inside of a storeroom to a specified temperature and humidity and a wick pan 8 which is installed on an upper part within the storeroom. Furthermore, it is provided with a humidifying pan 9 which is installed at a lower part within the storeroom, a first water-supply pipe 10 which supplies water of the water tank 7 to the wick pan 8, a second water- supply pipe 13 which supplies water of the wick pan 8 to the humidifying pan 9, and a third water-supply pipe 15 which supplies water of the water tank 7 to the humidifying pan 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial constant temperature and high humidity tank used for durability tests of electronic parts and new materials, and more particularly,
The present invention relates to a water supply device used for humidification control.

[0002]

2. Description of the Related Art Conventionally, a water supply device for a constant temperature and high humidity tank of this type is
It is disclosed in Japanese Utility Model Laid-Open No. 3-42553 and is constructed as shown in FIG. That is, the water tank 22 provided in the constant temperature and high humidity tank 21, the wick pan 24 installed in the upper part of the interior 23, the humidifying pan 25 installed in the lower part of the interior, and the water in the water tank 22 are wicked. Bread 24 and humidifying bread 2
5 is provided with a water supply pipe 26, one end of which is connected to the water tank 22 and the other end of which is connected to both the wick pan 24 and the humidifying pan 25 via valves 27 and 28 so that they can be independently supplied to both. Is configured. When the water in the wick pan 24 or the humidifying pan 25 decreases due to evaporation in the refrigerator, the valves 27 and 28 are selectively opened to supply water.

[0003]

However, according to the above configuration, since water is supplied from the water tank independently by the wick pan 24 and the humidifying pan 25, the water in the wick pan 24 is stored until it evaporates. It becomes water, mold is generated, and the water becomes muddy and difficult to evaporate. For this reason, there is a problem that the rate of rise of water due to the capillary phenomenon of the cloth dipped in the wick pan 24 decreases and the wet bulb temperature of the humidity sensor changes, so that the inside humidity cannot be controlled to the set humidity.

The present invention has been made to solve the above-mentioned problems, and it is a constant temperature and high humidity tank capable of controlling humidity with high accuracy by suppressing the generation of mold on the wick pan and allowing the humidity sensor to function properly. It is intended to provide a water supply device of.

[0005]

According to the present invention, in a constant temperature and high humidity tank for controlling the inside of the refrigerator to a predetermined temperature and humidity, a water tank provided in the constant temperature and high humidity tank and an upper portion of the inside of the refrigerator are installed. A wick pan, a humidifying pan installed in the lower part of the refrigerator, a first water supply pipe for supplying water from the water tank to the wick pan, and a second water supply pipe for supplying water from the wick pan to the humidifying pan. And a third water supply pipe for supplying the water in the water tank to the humidifying pan.

[0006]

According to the present invention, the water in the water tank can be first intensively supplied to the wick pan by the first and second water supply pipes, and then the water in the wick pan can be supplied to the humidifying pan. , The water of the wick pan can be circulated frequently, and the generation of mold on the wick pan can be suppressed.
As a result, the water in the wick pan can be constantly evaporated well, the rate of rise in water due to the capillary phenomenon of the cloth immersed in the wick pan is kept constant, and the wet bulb temperature of the humidity sensor is made normal, and the humidity in the refrigerator is kept constant. Can be controlled to the set humidity with high accuracy. Further, since the water tank and the humidifying pan are directly connected by the third water supply pipe, the water supply amount of the humidifying pan does not become insufficient.

[0007]

EXAMPLES Next, examples of the present invention will be described. FIG. 1 is a configuration diagram showing a water supply device for a constant temperature and high humidity tank of the present invention. Reference numeral 1 denotes a constant temperature and high humidity tank, which is composed of a case 2 made of a heat insulating material, a storage 3 formed in the upper part of the case, and a machine room 4 formed in the lower part of the case 2. Machine room 4
A cooling unit having a compressor, a condenser, and the like, and a control device (neither shown) for controlling the temperature and humidity in the storage 3 to predetermined values are housed therein. That is, the temperature sensor 5 and the humidity sensor 6 are provided in the storage 3, and the cooling unit and the heater 7a for heating the humidifying pan are operated and controlled by the controller so that the values detected by these sensors are set values. The inside of the storage 3 is controlled to a predetermined environment. Reference numeral 7 is a water tank installed in the upper part of the case 2 for storing pure water, 8 is a wick pan installed in the upper part of the storage 3, and 9 is a humidifying pan installed in the lower part of the storage 3. 10 is a valve 11 and a U trap section 1 on the way
A first water supply pipe 2 having a water tank 7 for supplying the water in the water tank 7 to the wick pan, and a second water supply pipe 13 having a valve 14 in the middle for supplying the water from the wick pan 8 to the humidifying pan 9.
Is a third water supply pipe having a valve 16 in the middle thereof and directly supplying the water in the water tank 7 to the humidifying pan 9. Where the first
Also, the second water supply pipes 10 and 13 are designed to be thicker than the third water supply pipe 15, and the water in the water tank 7 mainly flows into the first and second water supply pipes 10 and 13.

In the water supply device of the constant temperature and high humidity tank 1 thus constructed, the water in the water tank 7 is first concentratedly supplied to the wick pan 8 by the first and second water supply pipes 10 and 13. Since the water in the wick pan 8 can be supplied to the humidifying pan 9, the water in the wick pan 8 can be circulated frequently, and the generation of mold on the wick pan 8 can be suppressed. As a result, the water in the wick pan 8 can always evaporate well, and the cloth 17 dipped in the wick pan 8 can be evaporated.
The temperature of the wet bulb 18 of the humidity sensor 6 can be kept normal by keeping the rate of rise of water due to the capillary phenomenon constant and the inside humidity can be accurately controlled to the set humidity. Incidentally, 19 is a dry bulb. Further, the water tank 7 and the humidifying pan 9 are the third water supply pipe 1
Since it is directly connected at 5, the water supply amount of the humidifying pan 9 does not become insufficient. Also, the first water supply pipe 10
The U trap section 12 is for storing a predetermined amount of water in the storage 3 so that the temperature of the water in the wick pan 8 does not change due to water supply. Here, each water supply pipe 10,1
The valves 11, 14 and 16 of 3 and 15 are controlled to be opened and closed by the control device in order to supply an appropriate amount of water (the amount of water corresponding to the evaporated amount) to the wick pan 8 and the humidifying pan 9.

In this embodiment, the water tank 7 is attached to the case 2
Although the case of being installed in the upper part has been described, the present invention is not limited to this, and the structure may be installed below the case 2 in the machine room 4 or the like and pumped up by a pump.

[0010]

According to the present invention, the water in the water tank can be first supplied to the wick pan in a concentrated manner by the first and second water supply pipes, and then the water from the wick pan can be supplied to the humidifying pan. As a result, the water in the wick pan can be circulated frequently, and mold generation in the wick pan can be suppressed. As a result, the water in the wick pan can be constantly evaporated well, the rate of rise in water due to the capillary phenomenon of the cloth immersed in the wick pan is kept constant, and the dry-bulb temperature of the humidity sensor is set to normal to keep the humidity inside the chamber. Can be controlled to the set humidity with high accuracy. Further, since the water tank and the humidifying pan are directly connected by the third water supply pipe, the water supply amount of the humidifying pan does not become insufficient.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a water supply device for a constant temperature and high humidity tank of the present invention.

FIG. 2 is an explanatory view showing a conventional constant temperature and high humidity tank water supply device.

[Explanation of symbols]

 1 Constant Temperature High Humidity Tank 2 Case 3 Storage 7 Water Tank 8 Wick Pan 9 Humidifying Pan 10 First Water Supply Pipe 13 Second Water Supply Pipe 15 Third Water Supply Pipe

Claims (1)

[Claims] 1. A constant temperature and high humidity tank for controlling the inside and outside of a container to a predetermined temperature and humidity, a water tank provided in the constant temperature and high humidity tank, a wick pan installed in an upper part of the inside, and a lower part of the inside of the container. Humidifying pan installed in the water tank, a first water supply pipe for supplying water from the water tank to the wick pan, a second water supply pipe supplying water from the wick pan to the humidifying pan, and water for water in the water tank A water supply device for a constant temperature and high humidity tank, comprising: a third water supply pipe for supplying the bread.