JPH07239105A - Water level regulator for water circuit - Google Patents

Abstract

PURPOSE:To set a water level of a storage chamber of a water level regulating storage tank for regulating a water level of a storage tray of a humidifier to constant. CONSTITUTION:A water level regulating storage tank 29 communicating via a communication tube 38 is provided in the same height on a storage tray of a humidifier. The tank 29 has a water tank body 30, and a partition wall 33 for partitioning the body into a storage chamber 31 and a drain chamber 32. A trapezoidal cutout 40 and a column 41 protruding to the chamber 32 are provided at the wall 33.

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 constant temperature and constant humidity tank.

[0002]

2. Description of the Related Art In a conventional water level adjusting device for supplying pure water to a humidifier of a constant temperature and humidity tank, when the water surface of the humidifier drops to a certain limit due to evaporation, the water level of an auxiliary water tank communicating through a communicating pipe also increases. When the water level decreases, 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, Japanese Utility Model Publication 4-29).
311 gazette).

[0003]

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

The present invention solves the above problems,
To provide 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 flat lower end on the side wall of the water level adjusting storage tank that communicates with a storage tank such as a humidifier via a communication passage. It is intended for.

Another object of the present invention is to stabilize the water level in the water level adjusting storage tank by causing a capillarity phenomenon in the column portion provided on the side wall of the water level adjusting storage tank.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a water level adjusting device for a water circuit for making the water level of a storage tank such as a humidifier constant, wherein the water level adjusting storage tank communicating with the storage tank via a communication passage is provided. It is provided at the same height as the tank, and a notch having a flat lower end is provided on the side wall of the water tank for adjusting the water level.

Further, according to the present invention, in a water level adjusting device for a water circuit for making a water level of a storage tank such as a humidifier constant, the water level adjusting storage tank communicating with the storage tank via a communication passage has the same height as the storage tank. In this case, the side wall of this water level adjusting storage tank is provided with a pillar portion protruding toward the drainage side, and a notch having a width larger than the width of the joint portion with the side wall of this pillar portion is provided on the side wall facing the pillar portion. is there.

[0008]

The present invention is constructed as described above,
In the trapezoidal notch formed on the side wall of the water level adjusting reservoir, the water pressure of the water that overflows due to surface tension in the water level adjusting reservoir is concentrated and discharged, and the water level of the water level adjusting reservoir is trapezoidal. It is designed so that it can be kept the same as the lower end of the notch.

Further, according to the present invention, the water in the water level adjusting storage tank is drained by the capillary phenomenon which occurs at the corner formed by the pillar and the side wall provided facing the notch, and the water level of the water level adjusting storage tank is The surface tension of the water prevents the water surface from rising even if it rises gently.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of the constant temperature and constant humidity tank of the present invention. FIG. 2 is a water circuit diagram showing the storage device of the deionizer of the present invention. FIG. 3 is a perspective view showing a 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.

Reference numeral 1 denotes a constant temperature and humidity chamber formed by a main body 5 in which a heat insulating material 4 is filled between an outer case 2 and an inner case 3 made of stainless steel, and a door 6 for opening and closing the opening of the main body. Is.
Inside the inner box 3 of the main body 5, a constant temperature and constant humidity environment test chamber 7 is formed for carrying out a durability test of electronic components, new materials and the like while maintaining a predetermined temperature and humidity. The environmental test chamber 7 is provided with a partition plate 13 forming a space 12 for accommodating a temperature / humidity control device 11 having a heater 8 for heating the test chamber, a humidifier 9 for humidifying, and a cooling unit 10 for cooling / dehumidifying. . The humidifier 9 is composed of a storage dish 9a for storing water and a humidification heater 9b for dipping the water in the storage dish to evaporate the water. Above the temperature / humidity control device 11, a blower 14 for supplying constant temperature and constant humidity air to the environment test chamber 7 is provided. A blowout port 15 that blows forward is formed in the upper part of the partition plate 13, and a suction port 16 is formed in the lower part,
The environmental test chamber 7 and the temperature / humidity control device 11 are controlled by the blower 14.
Air having a constant temperature and a constant humidity circulates in the space 12 that stores the.

Reference numeral 17 denotes a pure water supply device for supplying pure water to the humidifier 9. The pure water supply device 18 has 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 the outlet side of the deionizer 18.
3 and a pure water storage tank 24 connected to the pipe on the outlet side.

A storage tank 22 for storing tap water is a deionizer 18
A pure water storage tank 24, which is arranged above the pure water and stores pure water, is arranged below the pure water container 18.

A rising portion 25 is formed in the outlet pipe 23 and extends partway through the deionizer 18.

Reference numeral 26 is a controller for opening and closing the water supply valve 21 in response to 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 is a water level adjusting storage tank which is provided at the same height as the storage tray 9a of the humidifier 9 and to which the pure water stored in the pure water storage tank 24 is supplied. This water level adjusting storage tank is the 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. An air vent hole 34 is provided in the upper wall of the water tank body 30, and a pipe 35 that communicates with the pure water storage tank 24.
And are provided. The controller 2 detects a signal from a water level detector 36 that detects the water level in the storage chamber 31 in this pipe.
A water supply valve 37 that is opened and closed by 6 is provided. On the lower wall of the water tank body 30, a communication pipe 38 that connects the storage tray 9 a of the humidifier 9 and the storage chamber 31 and a drain pipe 3 that connects the drain chamber 32.
9 and 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. Further, a cylindrical portion 41 is formed on the wall surface of the partition wall 33 on the drain chamber 32 side so as to project into the drain chamber 32 at a position facing the notch 40.

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 connecting portion 42 of the cylindrical portion 41 with the partition wall 33 is the lower end surface of the trapezoidal notch 40. Width B
It is made smaller.

The partition wall 33 and the columnar portion 41 form thin grooves 43, 43 outside the joint portion 42.

In the water level adjusting device of the water circuit constructed as described above, the environmental test chamber 7 for carrying out the durability test of electronic parts, new materials, etc. is arranged in the space 12 partitioned by the partition plate 13 to control the temperature and humidity. With the heater 8, the humidifier 9, and the cooling unit 10 of the device 11, the internal temperature of the refrigerator is -40 ° C to 150 ° C,
The internal humidity is set within the range of 20% to 95%.

The air whose temperature and humidity are controlled by the temperature / humidity control device 11 is blown by the blower 14 from the outlet 15 to the front of the environmental test chamber 7 and circulates in the environmental test chamber. Pure water is supplied from the pure water supply device 17 to the humidifier 9 for adjusting the humidity in the environmental test chamber 7 so that vapor containing impurities is not circulated in the environmental test chamber 7.

The humidifier 9 is designed so that the water level in the storage tray 9a is kept constant so that the amount of vapor evaporated in the humidifying heater 9b is proportional to the amount of heat generated by this heater. That is, the storage tray 9a is kept at a constant water level in the storage chamber 31 of the water level adjusting storage tank 29 by the communication pipe 38 communicating with this storage tray.

In the water level adjusting storage tank 29, pure water supplied from the pure water storage tank 24 through the pipe 35 into the storage chamber 31 is caused to flow into the drainage chamber 32 through the notch 40 of the partition wall 33, so that this storage chamber The water level is kept below a certain level. That is, by forming the notch 40 of the partition wall 33 that regulates the water level of the storage chamber 31 in the water tank body 30 into a trapezoidal shape,
The water pressure of the water which is higher than the lower end surface of the trapezoidal notch 40 due to the surface tension of the water in the storage chamber 31 is increased by the notch
It is drained by concentrating on 0. Further, the columnar portion 41 provided on the wall surface of the partition wall 33 on the drainage chamber 32 side has fine grooves 43, 43 formed at an acute angle by the columnar portion and the partition wall 33.
As a result, the water overflowing to the lower end surface of the notch 40 is allowed to flow into the fine grooves 43, 43.
The water level in the reservoir chamber 31 is prevented from becoming higher than the lower end surface of the notch 40 due to the surface tension of the water by the capillary phenomenon of No. 4, and the water level of the pure water supplied from the pipe 35 to the reservoir chamber 31 is accumulated. I try to keep it down.

By forming the width B of the lower end surface of the trapezoidal notch 40 to be larger than the width A of the connecting portion 42 between the partition wall 33 and the cylindrical portion 41, the water overflowing the lower end surface of the notch 41 can be prevented. Is supplied to the narrow grooves 43, 43 between the partition wall 33 and
The capillarity of this narrow groove allows water to drain.

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

According to the present invention, the storage chamber 31 of the water level adjusting storage tank 29 that keeps the water level of the storage tray 9a of the humidifier 9 constant is divided by the partition wall 3.
The trapezoidal notch 40 of No. 3 and the columnar portion 41 prevent the water level from exceeding a predetermined level, so that the environmental test chamber 7 can always be maintained at the set humidity.

In the above description, the column portion is replaced by the column portion 4
However, it is needless to say that this pillar portion may have any shape as long as it forms the acute-angled narrow grooves 43, 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 making the water level of a storage tank such as a humidifier constant, a water level adjusting storage tank communicating with the storage tank via a communication passage. Is provided at the same height as the storage tank, and a notch having a flat lower end is provided on the side wall of the water level adjusting storage tank, so that the water level in the water level adjusting storage tank rises and overflows caused by surface tension of water. The divided water can be drained by using the water pressure of this water, and the water level of the water level adjusting storage tank can be prevented from rising above the notch due to surface tension.

Further, according to the present invention, in a water level adjusting device for a water circuit for making the water level of a storage tank such as a humidifier constant, the water level adjusting storage tank communicating with the storage tank via a communication passage has the same height as the storage tank. In this case, since the side wall of this water level adjusting storage tank is provided with a pillar portion projecting to the drainage side, and a notch having a width larger than the width of the joint portion with the side wall of this pillar portion is provided on the side wall facing the pillar portion, The water accumulated in the water level adjusting storage tank can be drained by overcoming the surface tension of the water by the capillary phenomenon at the corners of the side wall and the column portion, and the water level adjusting storage tank is notched even if the water surface rises gently. It is designed so that it is not above the lower end surface of the.

[Brief description of drawings]

FIG. 1 is a sectional view of a constant temperature and constant humidity tank showing an embodiment of the present invention.

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

FIG. 3 is a perspective view of a main part of 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.

[Explanation of symbols]

 9 Humidifier 9a Storage tray 29 Water level adjusting storage tank 31 Storage chamber 33 Partition wall 38 Communication pipe 40 Notch 41 Column part 42 Coupling part

Claims (2)

[Claims] 1. A water level adjusting device for a water circuit for making a water level of a storage tank such as a humidifier constant, wherein a water level adjusting storage tank communicating with the storage tank through a communication passage is at the same height as the storage tank. A water level adjusting device for a water circuit, wherein a notch having a flat lower end is provided on a side wall of the water level adjusting reservoir. 2. A water level adjusting device for a water circuit for making a water level of a storage tank such as a humidifier constant, wherein a water level adjusting storage tank communicating with the storage tank via a communication passage is provided at the same height as the storage tank. A column portion projecting to the drain side is provided on a side wall of the water level adjusting storage tank, and a notch having a width larger than a width of a connecting portion with the side wall of the column portion is provided on a side wall facing the column portion. Water level adjusting device for water circuit.