JPH0549953A - Water supply device of thermostatic and humidistatic tank - Google Patents

Abstract

PURPOSE:To easily supply water to the respective parts in a tank from a water supply tank and facilitate the water replenishing work to the water supply tank by a method wherein an up-and-down moving means operated in connection with the opening and closing operation of an opening and closing door is arranged above a water supply tank-arranging stand, and a water supply pump is engaged with and held to said means so as to fall by the closing of the opening and closing door and raise by the opening thereof. CONSTITUTION:An arranging stand 2 is provided to the inner surface of a front opening and closing door 1 and a water supply tank 5 having a water supply port 6 provided to the upper part thereof is placed on said stand 2 in a freely detachable manner. The up-and- down moving means 4 operated in connection with the opening and closing operation of the opening and closing door 1 is arranged above the arranging stand 2 and a water supply pump 8 is engaged with and held to said means 4 in a vertically movable manner. When the water supply tank 5 becomes empty, the door 1 is opened to raise the water supply pump 8 and the tank 5 is detached from the arranging stand 2 to supply water to the tank 5 from the water supply port 6. When the tank 5 is again placed on the arranging stand 2 and the door 1 is closed, the suction port 16 of the water supply pump 8 enters the tank 5 and the water in the tank 5 passes through the suction port 16, an emitting port 15, a flexible hose 17 and a water supply connection part 18 to be supplied to the respective parts in a tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant temperature and humidity chamber for conducting an environmental test of electric and electronic parts, and more particularly to a water supply device provided in the constant temperature and humidity chamber.

[0002]

2. Description of the Related Art Since a constant temperature and constant humidity tank has a humidifier and a wet temperature sensor inside, it is necessary to supply water to them, and a water supply device is also provided.

In this case, the water supply device has a capacity of 10 liters to 15 liters.
It is usually composed of a liter water supply tank and a pump for supplying water from the tank to each of the above-mentioned parts, but the location of the water supply tank differs depending on the constant temperature and humidity chamber.

For example, in the constant temperature and humidity chamber disclosed in JP-A-1-167540 and JP-A-1-265147, the water supply tank is fixed to the back of the constant temperature and constant humidity tank.
Some commercially available constant temperature and humidity chambers have a water supply tank on the front (see Tabai Espec Co., Ltd. constant temperature and humidity chamber catalog).

By the way, in the latter case, the structure of disposing the water supply tank on the front side will be described in detail. The water supply tank is attachable to and detachable from a predetermined location, and an opening / closing door is provided in front of the location. By opening the door, the water tank can be taken out.

This is for facilitating the replenishment of water to the empty water supply tank, and it is possible to take out the empty water supply tank and perform water supply to the tank outside.
From this point of view, it was easier to carry out the water supply operation than the case where the tank was fixed to the back as described above.

[0007]

However, the water supply tank in this case is of the inverted downflow type, and therefore it is difficult to work after supplying water to the tank. It had to be securely placed in its original location, which could even be dangerous.

Further, the shape of the tank in this case is a special shape as shown in FIG. 5, which is different from a general plastic tank, and, in addition, as in the case of the inverted flow down type, the upper water supply port (A) is always used. However, since it is necessary to equip the check valve cap (B) with the check valve, the cost of the water supply tank is high, which results in a high cost of the entire water supply device.

The present invention copes with such a situation, and even in the case of a water supply device in which the water supply tank is also detachably arranged, it is extremely easy to rearrange the water supply tank, and a commercially available plastic tank is used as the water supply tank. It is an object of the present invention to propose a water supply device for a constant temperature and constant humidity tank that can be used and solve the above-mentioned problems.

[0010]

That is, the feature of the present invention which meets the above object is to provide an opening / closing door on the front surface of a constant temperature and humidity chamber,
A mounting table is arranged on the inner surface of the opening / closing door, and a water supply tank having a water supply port on the upper side is detachably mounted on the mounting table, while vertically moving in conjunction with the opening / closing operation of the opening / closing door. The moving means is disposed on the upper part of the installation table, and the up-and-down moving means engages and holds a water feed pump having an inlet and an outlet so as to be vertically movable, and the inlet of the water pump is in the water tank. While it is removable, the discharge port of the water supply pump is connected to the water supply connection part into the tank via a flexible hose.

[0011]

In the above construction, the water supply pump is set so as to descend when the opening / closing door is closed and rise when it opens.
By doing this, you can simply close the door.
The suction port of the water supply pump can be introduced into the water supply tank mounted on the installation table, and the water in the tank can be supplied to each part in the tank through the flexible hose and the water supply connection part.

After the water supply is repeated several times, when the water in the tank is exhausted, the water supply tank is replenished with water, and the opening and closing door is opened to raise the water supply pump from the water supply tank. Then, the empty water tank is taken out of the installation table, water is replenished, the tank is similarly installed on the installation table, and the opening / closing door is closed.

In particular, regarding the handling of the water supply tank during this time, it is possible to work while standing upright with the water supply port upwards, and it is much easier than before.

[0014]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is an explanatory view of a water supply device for a constant temperature and constant humidity tank of the present invention. In the figure, (1) shows an opening / closing door arranged on the front side, and an installation table (2) is arranged inside the door (1). ing.

A vertical member (3) is vertically installed from the installation stand (2) at the end of the installation stand (2) opposite to the opening / closing door (1). The main part of
The installation table (2) and the vertical member (3) are respectively arranged.

First, regarding the installation table (2), the water supply tank (5) is removably placed on it. As the water supply tank (5), a tank having a capacity of about 10 to 15 liters, which has a water supply port (6) of an appropriate opening size arranged on the upper side, is used, and a handle (7) is attached to the upper end thereof. Incidentally, such a tank is very commercially available as a plastic tank, and it is desirable to use this tank in terms of cost reduction. It is important that the place where the water tank (5) is placed on the installation table (2) is set in advance because of the relationship with the descending position of the water supply pump (8) which will be described later. It is desirable to mark such as.

On the other hand, a gad motor (M ₁ ) capable of rotating in the forward and reverse directions is fixed to the upper end of the vertical member (3) with its rotating shaft facing downward. This motor (M ₁ ) is the drive source of the vertical moving means (4) for moving the water supply pump (8) up and down, and its stop control is performed by the door switch (9) provided on the opening / closing door (1). With a control device (not shown), for example, when the door switch (9) detects that the opening / closing door (1) has been opened, the motor (M ₁ ) rotates forward for a certain period of time, while the opening / closing door (1) is closed. When this is detected by the door switch (9), the motor (M ₁ ) is set to rotate in the reverse direction at the same time.

[0018] As the motor vertically moving means is driven to (M ₁₎ (4), the rotation shaft of the motor (M _1),
A long screw (11) is connected in the vertical direction via a gear (10), and a locking member (12) is screwed onto the long screw (11) so as not to rotate, so that the long screw (11) is the motor. (M
_When the forward / reverse rotation is caused by the rotation of ₁ ), the locking member (12) moves up and down accordingly.

Then, one end of the locking member (12) is bent at a right angle, and the motor (M ₂ ) portion which is the drive portion of the water supply pump (8) is fixed to this bent portion. The water supply pump (8) has this motor (M ₂ ) as its upper end, and a pumping fan (13) at its lower end, and the rotary shaft of the motor (M ₂ ) is extended between them and connected, and further rotated. The axially extended portion is surrounded by a suction pipe (14), and a discharge port (15) is projectingly provided on an upper end side portion of the pipe (14),
At the lower end of the pipe (14), a portion surrounding the pumping fan (13) has a slightly large diameter, and an intake port (16) is provided there.

In this case, in the pipe (14), the outer diameters of the suction port (16) and its upper part are slightly smaller than the diameter of the water supply port (6) of the water supply tank (5). There is. The length of the pipe (14) is the water tank (5).
It is longer than the vertical length. This is because the inlet port (16) must be inserted into and removed from the water inlet (6) of the water tank (5).

A flexible hose (17) is connected to the drain port (15).
Is extended and fixed to the upper part of the vertical member (3), and is further connected to the water supply connection (18). Water supply connection (18)
Is a part of the constant temperature and constant humidity tank that requires water supply, that is, although not shown, it is connected to an evaporating dish of a humidifier or a wick pan of a wet temperature sensor.

The water supply device of the present invention is constructed as described above. Next, its operation will be described. First, in FIG. 1, water is supplied to a portion where the water supply device of the present invention requires water supply (hereinafter referred to as a required portion). This shows a possible state, in which a water supply tank (5) filled with water is placed on the installation table (2). At this time, the opening / closing door (1) is closed, the water supply pump (8) descends to the lowermost end, and the pipe (14) portion loosely inserts the water supply port (6) of the water supply tank (5) into the suction port (1).
Part 6) is located at the bottom of the tank (5). If the motor (M ₂ ) of the water supply pump (8) is operated, water can be supplied to each required part.

Next, when the amount of water in the water supply tank (5) decreases and it becomes impossible to supply water to each required part, the opening / closing door (1)
Open up. The opening operation of the door (1) is detected by the door switch (9), and the vertical moving means (4) by the long screw (11) and the locking member (12) is driven by the motor (M ₁ ). It is rotated in the forward direction for a predetermined time.
As a result, the water supply pump (8) is pulled up from the water supply tank (5), and when the rotation of the motor (M ₁ ) is stopped, the suction port (16) at the bottom end of the pump (8) is opened as shown in FIG. It is in a state of being completely located above the water supply tank (5).

Water is supplied to the water supply tank (5) in the state shown in FIG. At that time, it is usual to take out the water supply tank (5) from the installation base (2) as shown by the arrow to replenish the water, but if a water supply hose etc. can be prepared separately,
It is also possible to place the water supply tank (5) on the installation table (2) and replenish it as it is. In either case, water can be injected very easily from the water supply port (6).

When the tank (5) is taken out of the installation table (2) and replenished with water, then the full water tank (5) should be placed again at a predetermined position on the installation table (2). However, this work is also a very easy work because the water supply tank (5) can be moved as it is with the upper handle (7). Finally, when the opening / closing door (1) is closed, the door switch (9) detects it again, this time the motor (M ₁ ) rotates in the reverse direction for a predetermined time, and the water supply pump (8) is turned on. In contrast to the above case, it is lowered to the state shown in FIG. 1 again. In this way, water can be supplied to each required part again.

Needless to say, what has been described above with reference to FIGS. 1 and 2 is an embodiment of the present invention, and the details of the present invention can be appropriately changed. For example, in the one shown in FIG. 3, the water supply pump (8) is not constituted by the suction pipe (14) or the like as described above, and the motor (M ₂ ) for driving the pump is an underwater motor, and this motor (M ₂ ) Is directly connected to the pumping fan (13) with a short rotating shaft, and is housed in a casing (19) to make the entire pump (8) a submersible pump. The casing (19) and of course the water supply port (6). The size of the water supply pump is such that the entire pump (8) is located in the water supply tank (5) when water is supplied, and part of the flexible hose (17) is also underwater. The water sucked from the suction port (16) of (8) and discharged from the discharge port (15) can be supplied to the water supply connection part (18). By using the water feed pump (8) as the submersible pump in this way, the locking member (12) needs to be longer than that described above, but on the other hand, the rotation shaft extension portion of the motor (M ₂ ) and Since the suction pipe (14) is unnecessary, there is an advantage that the structure of the pump (8) can be simplified. In addition, FIG. 4 shows a state when the water supply pump (8) is raised in that case. When the opening / closing door (1) is opened as in the case described above, the water supply pump (8) moves upward through the vertical movement means (4), so that the water supply tank (5) can be easily taken out. .. Therefore, it is understood that the work of replenishing the empty water tank (5) with water is extremely easy as in the case described above.

[0027]

As described above, according to the present invention, an opening / closing door is provided on the front surface of the constant temperature and humidity chamber, the installation base is arranged on the inner surface of the opening / closing door, and the installation base is provided with the water supply port at the upper portion. The water supply tank is detachably placed on the other hand, and on the other hand, an up-down moving means that moves up and down in conjunction with the opening / closing operation of the opening / closing door is provided on the upper part of the installation table, and the up / down moving means is provided with each required in the tank. The water supply pump capable of supplying water to the section is engaged and held so that the intake port of the water supply pump can be inserted into and removed from the water supply tank. The water tank can be freely taken out, and after replenishing the water from the water tank to the taken-out water tank, the water tank can be placed in the specified position again and then the open / close door can be closed. If you do that, the water supply pump will descend and water can be supplied. Because it is shall, operation of the water supply apparatus be easy of course, supplemented with water to the water tank becomes empty, it is very easy task when installing the tank again at a predetermined location. In particular, when placing the water supply tank at a predetermined place, it is not necessary to invert the water supply tank as in the conventional case, and not only the handling of the water supply tank is easy, but also safety and promptness at the time of water supply are achieved. It is something. Moreover, depending on the case, it is possible to replenish water to the water supply tank even when the water supply tank is placed on the horizontal base. In this case, no troublesome work is required, and the safety and speed can be improved. Further promoted. Further, as the water supply tank, a commercially available plastic tank can be used as it is, and the water supply device for the constant temperature and constant humidity tank can be provided at a very low price.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram when handling a water supply tank of a water supply device for a constant temperature and constant humidity tank of the present invention.

FIG. 3 is an explanatory view showing another embodiment of the water supply device for the constant temperature and constant humidity tank of the present invention.

FIG. 4 is an explanatory diagram when a water supply tank of the water supply device in FIG. 3 is handled.

FIG. 5 is an explanatory view of a water supply tank of a conventional water supply device for a constant temperature and constant humidity tank.

[Explanation of symbols]

 (1) Opening / closing door (2) Installation base (4) Vertical movement means (5) Water tank (6) Water supply port (8) Water supply pump (15) Discharge port (16) Suction port (17) Flexible hose (18) Water supply Connection

Claims (1)

[Claims] 1. An opening / closing door (1) is provided on a front surface of a constant temperature and humidity chamber, an installation stand (2) is arranged on an inner surface of the opening / closing door (1), and a water supply port (6) is installed on the installation stand (2). ) Is installed on the water tank (5) so that the water tank (5) can be detachably mounted, while the vertically moving means (4) that moves up and down in conjunction with the opening / closing operation of the opening / closing door (1) is installed on the installation table (2). A water feed pump (8) provided with an inlet (16) and a discharge port (15) so that the water feed pump (8) is disposed above the water feed pump (8). ) Suction port (16) can be inserted into and removed from the water supply tank (5), while the water supply pump (8)
A water supply device for a constant temperature and constant humidity tank, characterized in that the discharge port (15) is connected to a water supply connection part (18) into the tank via a flexible hose (17).