JP2951190B2 - Water level adjustment device for water circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water level adjusting device for a water circuit for stabilizing the water level of a humidifier in a thermo-hygrostat.

[0002]

2. Description of the Related Art Conventionally, a water level adjusting device for supplying pure water to a humidifier of a general thermostatic humidifier tank, when the water level of the humidifier drops to a certain limit due to evaporation, the water level of an auxiliary water tank which communicates through a communication pipe. The water level is lowered, the float detects this, and a predetermined amount of water is supplied from the water supply pipe, and accordingly, water is supplied to the humidifier through the communication pipe (for example, 4-29).
No. 311).

[0003]

However, in the conventional water level adjusting device, since a predetermined amount of water is supplied from the water supply pipe by the float of the auxiliary water tank, the height of the water level of the auxiliary water tank fluctuates, and the water level of the humidifier is changed. There was a problem that could not be stabilized.

The present invention solves the above problem,
Provided is a water level adjusting device for a water circuit that stabilizes the water level of a water level adjusting storage tank by providing a notch with a flattened lower end on a side wall of the water level adjusting storage tank communicating with a storage tank such as a humidifier through a communication passage. It is intended for.

Another object of the present invention is to stabilize the water level of the water level adjustment storage tank by causing a capillary phenomenon at a column provided on the side wall of the water level adjustment storage tank.

[0006]

According to the present invention, there is provided a water level adjusting device for a water circuit for keeping a water level of a storage tank such as a humidifier constant, wherein the water level adjustment storage tank communicating with the storage tank through a communication passage is provided. Provided at the same height as the tank, and provided a pillar projecting to the drain side on the side wall of this water level adjustment storage tank, and a notch with a width larger than the width of the joint with the side wall of this pillar is formed on the side wall facing the pillar. It is provided.

[0007]

[0008]

According to the present invention having the above-described structure,
In the notch formed in the side wall of the water level adjustment storage tank, the water pressure overflowing and rising due to surface tension in this water level adjustment storage tank is concentrated and discharged, and the water level of the water level adjustment storage tank is made equal to the lower end of the notch. It is something that can be maintained.

Further, according to the present invention, the water in the water level adjustment storage tank is drained by a capillary phenomenon generated at a corner formed by the column and the side wall provided opposite to the notch, and the water level of the water level adjustment storage tank is increased. Even if it rises slowly, the water surface does not rise due to the surface tension of the water.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 is a sectional view of a thermo-hygrostat according to the present invention. FIG. 2 is a water circuit diagram showing the storage device of the pure water device of the present invention. FIG. 3 is a cutaway perspective view of a main part showing the water level adjusting device of the present invention. FIG. 4 is a plan view of the water level adjusting device of the present invention. FIG. 5 is a sectional view of the water level adjusting device of the present invention.

1 is a thermo-hygrostat formed of a main body 5 filled with a heat insulating material 4 between an outer box 2 and an inner box 3 made of stainless steel, and a door 6 for opening and closing the opening of the main body. It is.
Inside the inner box 3 of the main body 5, a constant temperature / humidity environmental test chamber 7 for maintaining durability at a predetermined temperature and humidity and performing an endurance test of electronic components and new materials is formed. The environmental test chamber 7 is provided with a partition plate 13 forming a space 12 for accommodating a temperature / humidity controller 11 having a heater 8 for heating the test chamber, a humidifier 9 for humidifying, and a cooling unit 10 for cooling and dehumidifying. . The humidifier 9 includes a storage dish 9a for storing water and a humidification heater 9b for immersing the storage dish in water and evaporating the water. Above the temperature and humidity control device 11, a blower 14 for supplying air with constant temperature and humidity into the environmental test chamber 7 is provided. At the upper part of the partition plate 13, an outlet 15 for blowing forward is formed, and at the lower part, an inlet 16 is formed.
Environmental test chamber 7 and temperature / humidity controller 11
Is circulated through the space 12 containing the air.

Reference numeral 17 denotes a pure water supply device for supplying pure water to the humidifier 9. The pure water supply device supplies a pure water device 18 having an ion exchange resin therein and a water supply 19 at the inlet side of the pure water device. A water supply valve 21 and a tap water storage tank 22 provided on a pipe 20 to be connected, and a pipe 2 provided on an outlet side of the pure water device 18.
3 and a pure water storage tank 24 connected to the outlet side pipe.

The storage tank 22 for storing tap water is provided with the pure water device 18.
, And a pure water storage tank 24 for storing pure water is disposed below the pure water device 18.

A rising portion 25 is formed in the outlet pipe 23 so as to extend halfway through the water purifier 18.

Reference numeral 26 denotes a controller for opening and closing the water supply valve 21 based on detection signals from a water level detector 27 for detecting the water level in the storage tank 22 and a water level detector 28 for detecting the water level in the pure water storage tank 24.

Reference numeral 29 denotes a water level adjustment storage tank provided at the same height as the storage dish 9a of the humidifier 9 and supplied with pure water stored in a pure water storage tank 24. The water level adjustment storage tank is a water tank body 30.
And a partition wall 33 that divides the inside of the main body into a storage chamber 31 and a drainage chamber 32. The upper wall of the water tank body 30 has an air vent hole 34 and a pipe 35 communicating with the pure water storage tank 24.
Are provided. In this pipe, a signal from a water level detector 36 for detecting the water level in the storage chamber 31 is detected, and the controller 2
A water supply valve 37 which is opened and closed at 6 is provided. On the lower wall of the water tank main body 30, a communication pipe 38 that communicates the storage dish 9 a of the humidifier 9 with the storage chamber 31 and a drain pipe 3 that communicates with the drain chamber 32 are provided.
9 are provided.

A trapezoidal notch 40 is formed in the upper part of the partition wall 33 so that pure water stored in the storage chamber 31 flows into the drainage chamber 32 to keep the water level in the storage chamber constant. A column 41 is formed on the wall surface of the partition wall 33 on the drain chamber 32 side at a position facing the notch 40 so as to protrude into the drain chamber 32.

The upper end surface of the cylindrical portion 41 and the lower end surface of the notch 40 are formed on the same plane, and the width A of the joint 42 between the cylindrical portion 41 and the partition wall 33 is the same as the lower end surface of the trapezoidal notch 40. Width B
It is formed smaller.

The partition wall 33 and the cylindrical portion 41 form narrow grooves 43 outside the connecting portion 42.

In the water level adjusting device for a water circuit thus configured, an environmental test chamber 7 for performing an endurance test of an electronic component, a new material or the like is provided with a temperature and humidity control device disposed in a space 12 partitioned by a partition plate 13. The temperature inside the refrigerator is −40 ° C. to 150 ° C. by the heater 8, the humidifier 9 and the cooling unit 10 of the device 11,
The humidity in the refrigerator is set in a range of 20% to 95%.

The air which has been made constant in temperature and humidity by the temperature and humidity control device 11 is blown out from an air outlet 15 to the front of the environmental test chamber 7 by a blower 14 and circulates in the environmental test chamber. Further, pure water is supplied from a pure water supply device 17 to the humidifier 9 for adjusting the humidity in the environmental test chamber 7 so that the vapor containing impurities is not circulated in the environmental test chamber 7.

The humidifier 9 keeps the water level of the storage dish 9a constant so that the amount of steam evaporated by the humidification heater 9b is proportional to the amount of heat generated by the heater. That is, the water level of the storage chamber 31 of the water level adjusting storage tank 29 is made constant by the communication pipe 38 communicating with the storage dish 9a.

The water level adjusting storage tank 29 is configured such that pure water supplied from the pure water storage tank 24 into the storage chamber 31 via the pipe 35 flows into the drain chamber 32 through the notch 40 of the partition wall 33, and the water in the storage chamber is adjusted. The water level does not exceed the specified level. That is, the notch 40 of the partition wall 33 that regulates the water level of the storage chamber 31 in the water tank main body 30 is formed in a trapezoidal shape,
The notch 4 is used to increase the water pressure in the storage chamber 31 to a level higher than the lower end face of the trapezoidal notch 40 due to surface tension.
Draining is concentrated on 0. Further, the cylindrical portion 41 provided on the wall surface of the partition wall 33 on the drain chamber 32 side has narrow grooves 43, 43 formed at an acute angle by the cylindrical portion and the partition wall 33.
As a result, water overflowing at the lower end surface of the notch 40
Of the pure water supplied to the storage chamber 31 from the pipe 35 and stored therein so that the water level in the storage chamber 31 does not become higher than the lower end face of the notch 40 due to the surface tension of the water. I try to keep it down.

The width B of the lower end face of the trapezoidal notch 40 is formed to be larger than the width A of the connecting portion 42 between the partition wall 33 and the column portion 41, so that water overflowing at the lower end surface of the notch 41 can be removed from the column portion 41. Is supplied to the narrow grooves 43 between the and the partition wall 33,
Water can be drained by the capillary action of the narrow grooves.

The drainage chamber 32 is provided with a drainage pipe 39 at the lower part,
The water discharged from the storage chamber 31 through the notch 40 of the partition wall 33 is discharged to the outside. The water tank main body 30 is provided with an air vent hole 34 so that the pressure in the water tank main body does not fluctuate depending on the temperature.

According to the present invention, the storage chamber 31 of the water level adjustment storage tank 29 for keeping the water level of the storage dish 9a of the humidifier 9 constant is formed by the partition wall 3.
By keeping the trapezoidal notch 40 and the cylindrical portion 41 from reaching a predetermined or higher water level, the environmental test chamber 7 can always be maintained at the set humidity.

In the above description, the column is replaced with the column 4
As described above, it is needless to say that this pillar portion may have any shape as long as it forms acute narrow grooves 43 with the partition wall 33.

[0029]

As described above, according to the present invention, in a water level adjusting device for a water circuit for keeping a water level of a storage tank such as a humidifier constant, a water level adjustment storage tank communicating with the storage tank via a communication passage. Is provided at the same height as the storage tank, a column protruding toward the drainage side is provided on the side wall of the water level adjustment storage tank, and a notch having a width larger than the width of the joint with the side wall of the column is opposed to the column. Since the water level in the water level adjustment storage tank rises and overflows due to the surface tension of the water, the overflowed water can be drained using the water pressure, and the water level in the water level adjustment storage tank can be reduced. Can be prevented from rising above the notch due to surface tension. In addition, the water stored in the water level adjustment reservoir can be drained by overcoming the surface tension of the water by the capillary action at the corner between the side wall and the column, and even if the water surface rises gently, the water level in the water level adjustment reservoir can be reduced. Is not above the lower end surface of the notch.

[0030]

[Brief description of the drawings]

FIG. 1 is a sectional view of a thermo-hygrostat showing an embodiment of the present invention.

FIG. 2 is a water circuit diagram showing the storage device of the pure water device of the present invention.

FIG. 3 is a cutaway perspective view of a main part showing the water level adjusting device of the present invention.

FIG. 4 is a plan view of the water level adjusting device of the present invention.

FIG. 5 is a sectional view of a water level adjusting device according to the present invention.

[Explanation of symbols]

 9 Humidifier 9a Storage dish 29 Water level adjustment storage tank 31 Storage chamber 33 Partition wall 38 Communication pipe 40 Notch 41 Cylindrical part 42 Joint part

Claims (1)

(57) [Claims] 1. A water level adjusting device for a water circuit for keeping a water level of a storage tank such as a humidifier constant, wherein a water level adjustment storage tank communicating with the storage tank via a communication passage is flush with the storage tank.
A column that protrudes to the drainage side on the side wall of this water level adjustment storage tank
Width greater than the width of the joint with the side wall of this pillar
The water level adjusting device for a water circuit, wherein the notch is provided on a side wall facing the pillar portion .