JP3560944B2 - Environmental test equipment water circuit - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a water circuit capable of supplying water to a wick water holding container and a humidifying water holding container of an environmental test apparatus via a pump, and is particularly advantageously used for a technique for supplying water to a wick pan and a humidifier.
[0002]
[Prior art]
As a method of supplying water to the wick and the humidifier, there are a pump pumping type and a head tank type. The pump pressure feeding method can solve problems such as a water leak trouble in the head tank method, a work of transporting water to a high place for supplying water to the head tank, and a failure of water supply by an air lock.
[0003]
As such a pump pressure-feeding water circuit, there is disclosed an apparatus that controls the amount of water supplied to a wick using an electromagnetic pump (see Japanese Patent Application Laid-Open No. Hei 10-246675). In this apparatus, as a tank for supplying water to the electromagnetic pump, there are provided a water supply tank and a portable portable tank which is stacked and placed on the water supply tank so that water can be supplied thereto.
[0004]
However, in such a device, the height of the portable tank itself and the height for lifting it from the water supply tank are required. Depending on the structure of the installed environmental test equipment, such a high space is often not allowed especially in a small-sized one.
[0005]
The head tank type water circuit used to be detachable so that the make-up water tank can be transported for water filling, and a device that pumps water from this tank to a water supply tank consisting of a head tank was used. (Refer to FIG. 2 of Japanese Patent Application Laid-Open No. 1-167540 and related description). However, this device does not solve the problem of the head tank system as described above.
[0006]
On the other hand, in the above publication, a detachable water supply tank is arranged at an intermediate position between the humidifier plate and the wet bulb sensor plate, and the wet bulb sensor plate at a higher position is supplied with water by a water supply pump and the humidifier plate at a lower position is provided. A water supply device has been proposed in which water is supplied at a difference in water level via an electromagnetic valve, and when the lower limit detection for water supply of a humidifier float switch continues for several tens of seconds, the water supply tank is warned of running out of water. .
[0007]
However, in this device, there is a problem in the case of the head tank method, and since the operation continuation time after the alarm is short, there is no time margin for refilling the water supply tank, which is inconvenient in use. There is a possibility that continuous operation of the vehicle may be hindered. That is, since the water supply tank is detachable, the float switch to which the electric wiring is connected cannot be attached to the tank itself, and thus such a problem as to the alarm for running out of water occurs.
[0008]
[Problems to be solved by the invention]
As a water circuit that can solve the above problems, a water storage tank is fixedly provided, and a water level sensor is provided in the water circuit to alert the low water level of the water storage tank. It is conceivable that the water storage tank can be replenished with water by a separate portable tank via a detachable joint or the like, and water is supplied from the water storage tank to the wick pan and the humidifying dish by a pump.
[0009]
However, in such a device, there is a problem that water may spill or overflow from the tank when refilling the water storage tank, and it is difficult to clean the water storage tank because it is usually installed in a narrow place.
[0010]
Therefore, the present invention solves the above problems, occupies a small space in the environmental test device, does not have a risk of water leakage around the environmental test device, can easily clean the water storage container, and can continuously connect the environmental test device. It is an object to provide a water circuit capable of reliably supplying water without hindering operation.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a water circuit capable of supplying water to a wick water holding container and a humidifying water holding container of an environmental test device via a pump,
It is a socket-like pipe joint which is formed so as to be easily opened and closed by fitting and disengaging between one side member and the other side member which are formed so as to be opened when they are connected and closed when the connection is released. A portable water storage container having a water outlet to which the one-side member of the socket-like pipe fitting is attached and an air opening capable of introducing at least outside air and in which the water is put, and the other-side member is The socket-like joint provided so as to be connectable to one side member, and connected to the pump so that the water of the water storage container is put in and is connected to the other side member so that the water is taken out and fixed. A small water storage container provided with a water level detection means arranged and having a predetermined volume sufficiently smaller than that of the water storage container and capable of detecting the water level of the water, and a communication port for communicating with outside air. To.
[0012]
The invention according to claim 2 is characterized in that, in addition to the above, a check valve is provided in the air opening.
[0013]
According to a third aspect of the present invention, in addition to the features of the first or second aspect, the supplementary water container and the supplementary water container having a volume sufficiently larger than the small water storage container and provided at a position higher than the small water storage container are provided. It has a replenishing pipe system that enables replenishment of water to the small water storage container, and an on-off valve that is provided in the replenishing pipe system and that opens and closes in accordance with the water level detected by the water level detecting means. I do.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 show an example of a schematic configuration of a water circuit to which the present invention is applied and an environmental test apparatus equipped with the water circuit.
The water circuit is capable of supplying water to the wick pan 11 as a wick water holding container and the humidifying plate 12 as a humidification water holding container of the environmental test apparatus 1 through the pump 3. 4, a joint 5 which is a socket-like pipe joint, a water level sensor container 6 which is a small water storage container, and the like. In FIG. 2, the reference numeral 7 indicating the installation position by a two-dot chain line is a replenishment water tank for a water circuit in FIG. 3 described later.
[0015]
The environmental test apparatus 1 of this example has a small and simple structure, and includes, as normal components, a test chamber 13, an air-conditioning chamber 14, a blower 15 for circulating air conditioned between them, and a rotary drive for this. Motor 15a, a heater 16, a cooler 17 comprising an evaporator of a refrigerator, a compressor 18 of a refrigerator, a condenser 19, a cooling fan 20, a heat insulating wall 21 and a door 22, which surround a test room and an air conditioning room, and a device. Support structure 23, etc. An operation display section 25 is provided above the main body.
[0016]
The wick pan 11 is provided with a wet-bulb temperature sensor 112 on which the wick 111 is placed on the front end side, and a wick pan water supply 114 in which a float switch 113 for detecting a water level is mounted on the rear end side. The wicking water is supplied through the water supply device 114. Further, a temperature sensor 24 is provided together with the wet bulb temperature sensor, and the temperature and humidity in the test chamber 13 are controlled by a control device (not shown) in accordance with the detection values of these sensors.
[0017]
The humidifying tray 12 is provided with a heater 121 that heats the supplied water to generate humidifying steam. In this example, both the wick pan 11 and the humidifying tray 12 are arranged at the same level on the floor of the test room 13 and the air-conditioning room 14, and their water levels are simultaneously and unitarily controlled by the float switch 113. No water level sensor is provided for the humidifier.
[0018]
However, the wick pan 11 and the humidifying dish 12 are provided at different height positions, and the water level of the humidifying dish 12 is controlled by a water level sensor different from that of the wick pan, or overflow water of the wick pan is supplied. The present invention can be applied to a simple water circuit or a water circuit having a boiler-type humidifier that generates water vapor in a closed container and emits the water vapor from a nozzle protruding into the air conditioning room 14. Of course. That is, the present invention can be widely applied to environmental test devices of various structures regardless of the type and equipment position of the wick pan and the humidifier, the arrangement of the equipment in the air conditioning room, and the like.
[0019]
The pump 3 may be of an appropriate type having a small capacity and a small head, but in this example, an electromagnetic pump having a simple structure is used. The pump 3 is automatically started and stopped by the water level sensor of the wick pan water supply 114 as described above, sends water to the wick pan 11 and the humidifying tray 12 through the common pipe system 31, and the water level of the wick pan 11 and the humidifying tray 12 Is replenished with water consumed by evaporation so that is within a certain range. The pump 3 may be operated for a predetermined time so as to supply a predetermined substantially constant amount of water, or may be controlled so as to change the operation time according to the operation conditions of the environmental test apparatus.
[0020]
The water storage container 4 has a water outlet 41 to which the female joint 52 is attached as one of the male joint 51 or the female joint 52 which is one side member of the pipe joint 5 and air capable of introducing at least outside air. It is a portable container that has an intake port 42 serving as an application opening and is capable of containing water supplied by the pump 3. That is, it is formed so as to be used in a fixed place without being fixed by a size and weight that can be transported manually.
[0021]
The intake port 42 is provided at a position higher than the water surface 43 when water is introduced so that outside air can be introduced. In the present embodiment, the intake port 42 is provided at a water cap 44 at the upper end. Further, the intake port 42 is provided with a check valve 45 for interrupting conduction from the inside to the outside and allowing intake from the outside to the inside as shown by an arrow.
[0022]
If the check valve 45 is provided and the air opening is dedicated to intake as in this example, there is no danger of flooding, handling and operation are easy, and there is a possibility of flooding. Even in the case of a simple mounting configuration, an overflow pipe for overflow is not required, and the pipe system is simplified. However, if there is no danger of overflow, the check valve 45 is stopped to make it a simple opening, or as shown by a two-dot chain line in the figure, the intake port 42 is opened and the overflow pipe 46 is replaced with the check valve 45. It may be guided.
[0023]
The dimensions of the water storage container 4 are determined according to the environmental test equipment equipped with the water storage container 4. The water storage container 4 for the small environmental test equipment of this example has a length of about 50 cm, a width of 28 cm, and a height of about 7.5 cm. The actual volume of water stored is about 5.5 liters, and is set so that it can be transported manually as described above. Since the water circuit of the present invention is of a pump water supply type, the water storage container 4 may be disposed at a low position of the environmental test apparatus 1, but in this example, the space portion of the support structure 23 is defined. It is designed to be placed in a position. In other words, as shown in FIG. 1C, it is installed in a shelf-shaped space formed by a support base 231 formed on the support structure 23 and guides 232 on both sides.
[0024]
The joint 5 is composed of the male joint 51 and the female joint 52 formed so as to be opened when they are connected and closed when the connection is released, and the fitting parts 51a and 52a and the fitting parts 51b and 52b are formed. And are formed so that they can be easily connected to and separated from each other by fitting and removing. That is, although not shown in detail, the joint 5 is a normal one-touch joint, and each of the male and female joints 51 and 52 is provided with a valve which is urged by a spring to be in a closed position in a single state, and each is provided with a valve. When combined, the valve is pushed and opened against the spring force, and the structure is such that water can pass through the inside, and it has a connecting structure part biased by a spring, and the insertion and removal direction between each other The structure is such that they can be inserted and removed from each other just by applying the force.
[0025]
The male joint 51, which is the other member of the joint 5, is provided so as to be connectable to the female joint 52. In this example, a flexible connection pipe 53 is attached to the male joint 51, and this is connected to a water storage container. 4 and is inserted into the female joint 52 placed on the support 231.
[0026]
However, depending on the installation position of the water storage container 4 and the like, the male joint 51 is fixedly installed at a fixed position to facilitate the operation, and the water storage container 4 is supported along the guide 232 from the front side with the door 22. When the cassette 231 is slid in the cassette direction in the front-rear direction, the female joint 52 at the distal end also moves in the front-rear direction, so that the position of the male joint 51 coincides with the height of the male and female joints, and the male and female joints are disengaged. It is also possible to make the structure such that it can be used.
[0027]
The water level sensor container 6 is fixedly arranged, and is connected to the male joint 51 via the suction port 61 and the connection pipe 53 so that the water in the water storage container 4 can be filled. Further, it is connected to the pump 3 through a water supply port 62 so that water can be taken out. As a water level detecting means capable of detecting the water level of the water, “water supply” h, which is a water level at which water is to be replenished in the water storage container 4. ₁ And "water shortage" which is a water level at which the pump 3 should be stopped even if the pump 3 is operated in order to prevent the suction of air into the pump 3 and the pipe system 31. ₂ Is provided.
[0028]
In this example, “full water” h is the state immediately before the overflow. ₃ Float switch 64 for detecting high water level is also provided. These h ₁ , H ₂ And h ₃ Is detected, the detected value is used for driving operation by ordinary means such as display and alarm. Therefore, in this example, the operation display unit 25 on the upper part of the environmental test apparatus 1 is provided with the respective alarm lamps 251 to 253.
[0029]
The water level sensor container 6 further includes an overflow pipe 65 that is a conduction port that communicates with outside air. The overflow pipe 65 is provided at a spatial position beyond a partition wall 66 for overflow. Reference numeral 67 denotes a mesh filter provided at the water supply port 62 to the pump 3. Thereby, the water level sensor container 6 has a function as a strainer, and the inflow of foreign matter into the pump 3 is prevented.
[0030]
Such a water level sensor container 6 has a predetermined volume sufficiently smaller than the water storage container 4. In this example, the pump 3 is operated by detecting a low water level in the wick pan 11 by the float switch 113 of the wick pan water supply 114, and thereby the amount of water when the water required for the wick pan 11 and the water supply 114 is replenished. Is about 26 cc, and the volume of the water level sensor container 6 is equal to the “water supply” h. ₁ From "drought" ₂ Is set to be about 50 cc, which is almost twice the volume of the above 26 cc.
[0031]
The water level sensor container 6 has a length of about 12 cm, a width of about 6 cm, and a height of about 8 cm, and has a sufficiently small predetermined volume of 1/20 or less of the water storage container 4. As a result, the water level sensor container 6 is sufficiently small and can be disposed anywhere, and can be disposed in the support structure 23 at the same level as the water storage container 4 as in this example. As a result, the overall height of the environmental test apparatus can be reduced to save space.
[0032]
The above-described water circuit and the environmental test apparatus equipped with the water circuit are operated as described below to exhibit the operational effects.
In the wick pan 11 and the humidifying tray 12, the water in the water storage container 4 is pumped up by the pump 3 via the water level sensor container 6 and is filled to a predetermined water level. In the environmental test apparatus 1, the refrigerator device, the blower 15, the heater 16, the humidification heater 121, and the like are operated, and the temperature and humidity in the test chamber 13 are detected by the temperature sensor 24 and the wet bulb temperature sensor 112. The air circulated in is controlled to the target temperature and humidity, and the sample W placed in the test chamber 13 is tested under such environmental conditions.
[0033]
When the environmental test apparatus 1 is operated, the water in the wick pan 11 and the humidifying dish 12 evaporates, and the water vapor is included in the circulating air and is condensed on the wall surface and the sample in the test chamber or taken out by ventilation and disappears. When the water levels of the wick pan 11 and the humidifying dish 12 drop below a certain level due to the continuous evaporation of water, the float switch 113 is operated to operate the pump 3, and the water in the water level sensor container 6 is sucked up by the pump 3 and pumped. Then, water is supplied to the wick pan or the humidifying dish, and the water level is restored.
[0034]
When the water in the water level sensor container 6 is sent out and the water level falls, the water flows from the water storage container 4 into the water level sensor container 6, and the water level in the water level sensor container 6 recovers to the same water level as the water level in the water storage container 4. That is, inflow of outside air corresponding to a decrease in the water level of the water storage container 4 via the check valve 45 and the intake port 42, movement of water from the water storage container 4 to the water level sensor container 6 via the joint 5 and the connection pipe 53, and The outflow of air from the overflow pipe 65 corresponding to the rise of the water level in the sensor container 6 occurs at the same time, and the respective water levels are quickly balanced without pressure or negative pressure in each container.
[0035]
The water level of the water storage container 4 and the water level sensor container 6 is "water supply". ₁ , The alarm lamp 251 turns on. As a result, water is supplied to the water storage container 4. When the water storage container 4 and the water level sensor container 6 are connected, “water supply” h ₁ And "drought" h ₂ In the normal operating state, there is a sufficient amount of water before the pump 3 stops operating even if this is overlooked for several days. ₂ It will not be. Therefore, it is possible to continuously supply water to the wick pan 11 and the humidifying tray 12.
[0036]
The water is poured into the water storage container 4 by holding the water storage container 4 to a place where a pure water supply facility is provided in a state where the female joint 52, the cap 44, and the suction port 42 with a check valve attached thereto are integrated. The cap 44 is removed, and pure water is put into the container. The water fills the water level sensor container 6 ₃ Can be entered up to the level corresponding to. In this case, since the female joint 52 that can be fitted and removed with one touch and the cap 44 that is not connected to the outside are merely attached to the water storage container 4, the water storage container 4 is placed on the support base 231 of the environmental test apparatus. It is easy to remove it from the place, bring it to a place with pure water supply equipment, and fill it with water.
[0037]
When the female joint 52 is separated from the male joint 51, since the two joints are independently closed, the water in the water storage container 4 does not go out during transportation and the water level sensor container 6 There is no leakage of water inside. Further, in this example, since the check valve 45 is provided like a water circuit, water does not overflow from the intake port 42 during transportation of the water storage container 4 and handling is further facilitated.
[0038]
In order to immerse the water into the water storage container 4 so that the water can be supplied, the water is placed on a support base 231 and installed at a predetermined position, and the male joint 51 attached to the flexible connection pipe 53 is connected to the water storage container 4. 4 is inserted into the female joint 52 at the tip position.
[0039]
As a result, electrical continuity is established between the water storage container 4 and the water level sensor container 6 via the joint 5, and h ₃ A water level difference is generated between the water level of the water storage container 4 and the water level of the water level sensor container 6 corresponding to the above. As described above, outside air flows into the water storage container 4 and air flows from inside the water level sensor container 6 through the overflow pipe 65. At the same time, water moves from the water storage container 4 to the water level sensor container 6, and the water level of the water level sensor container 6 is almost h. ₃ Recovers to full water. H in the water storage container 4 ₃ When the water is higher, the water level of the water level sensor container 6 is h ₃ At this time, the excess water flows out of the overflow pipe 65. When the water is replenished in this way, the wick pan 11 and the humidifying tray 12 can be replenished with water for a long time again.
[0040]
The water level of the water level sensor container 6 is h ₁ When the wick pan 11 and the humidifying tray 12 are at a low water level while the water storage container 4 is removed from the support base 231 to supply water, the pump 3 is operated and water in the water level sensor container 6 is taken out. The water level is h ₁ To further decrease. At this time, the required amount of water to be taken out is small, and is 26 cc in the environmental test apparatus 1 of the present embodiment. ₁ To h ₂ As described above, the water level is about 50 cc, so that even if water is taken out by the operation of the pump, the water level of the water level sensor container 6 is "dry". ₂ It does not fall any further.
[0041]
Therefore, water can be reliably supplied to the wick pan 11 and the humidifying dish 12. As a result, the continuous operation of the environmental test apparatus 1 can be maintained even when the water storage container 4 is removed from the mounting position and water is being injected. Then, once the wick pan and the humidifying dish are refilled with water, there is a considerable time margin until the next water replenishment in the normal operation state, so that it is not necessary to rush the water injection into the water storage container 4. Not at all. At this time, the water storage container 4 can be cleaned. It is possible to take some time for chemical cleaning and the like.
[0042]
As described above, the water storage container 4 and the water level sensor container 6 are separated from each other, and all of the external connection parts such as the overflow pipe 65, the pipe system 31 for connection to the pump 3, and the electrical wiring of the float switches 63 and 64 are water level sensors. The water level sensor container 6 is provided with a predetermined volume sufficiently smaller than the water storage container 4 to be attached to the container 6, and the water level sensor container 6 is made to have an appropriate capacity capable of being transported. 4 can be easily arranged at the same level as that of FIG. 4 and that the water level sensor container 6 alone can supply water to the wick pan and the humidifying dish when needed for the time being, and that the water storage container 4 can be separated from the water level sensor container 6 As a result, the wick pan and the humidifying dish can always be replenished with water, and continuous operation of the environmental test equipment can be ensured. It has been, and that it is possible to rationalize ease and arrangement of the driving operation of the environmental testing device, it is possible to obtain various advantages.
[0043]
FIG. 3 shows another example of a water circuit to which the present invention is applied. FIG. 3 is a view corresponding to FIG. 1A, but illustration of a part of the water storage container 4 and the wick pan 11 is omitted. These parts are the same as those in FIG.
[0044]
The water circuit of this example is an auxiliary water comprising a make-up water tank 7 as a make-up water container, a supply pipe system 8, a solenoid valve 9 as an on-off valve, and the like, in addition to the water circuit of FIG. Equipped with replenishment facilities. The makeup water tank 7 has a volume that is sufficiently larger than the water level sensor container 6 in this embodiment, and has a volume approximately 10 times that of the water level sensor container 6, and is positioned higher than the water level sensor container 6 as shown in FIG. It can also be provided at the middle position of the same arrangement space.
[0045]
The supply pipe system 8 enables water to be supplied from the supply water tank 7 to the water level sensor container 6. For this reason, in the present example, the connection 5 is connected by the same connection 5 as the connection 5 of the connection pipe 53, although it is temporarily shown large. In addition, it is also possible to stop the joint 5 and always connect it. The solenoid valve 9 is provided in the supply pipe system 8, and in this example, as a water level detecting means, a "water supply" h which is a water level detected by both the low water level float switch 63 and the high water level float switch 64. ₁ And "full water" ₃ It is opened and closed corresponding to. That is, h ₁ Opened in h ₃ Closed by Note that h ₃ Is set slightly lower than the height of the partition wall 66 forming the overflow level.
[0046]
The environmental test apparatus 1 is operated under various temperature and humidity conditions in accordance with the type of the sample to be tested and the content of the test. Among these conditions, there is also a high-humidity continuous operation condition with a relative humidity of 85% or more. Under such conditions, the humidification heater 121 is operated at a high load to increase the amount of water evaporation, and if the water storage container 4 is sized to be easily transported, water can be supplied to the humidifier for three days. In some cases, continuous unmanned operation for two to three days including weekends on weekends was not possible.
[0047]
According to the water circuit of this example, at such a time, for example, about 5 liters of water is put into the replenishing water tank 7 and the joint 5 is connected. As a result, the water in the water storage container 4 is supplied to the wick pan and the humidifying dish via the water level sensor container 6, and the water level becomes "water supply" in two days, for example. ₁ , The solenoid valve 9 opens and the water level of the water level sensor container 6 becomes h ₁ From "full water" ₃ , And this operation is repeated. As a result, it is possible to save the water supply action for three days or more and drive the vehicle.
[0048]
In this case, when water enters the water level sensor container 6 from the replenishing water tank 7, the water level of the water storage container 4 which is in communication with the water level sensor container 6 also tries to rise. When the check valve 45 is provided, since the internal pressure is generated, the water level of the water storage container 4 hardly rises, and the water can be supplied only to the water level sensor container 6. Since the water level sensor container 6 is in communication with the outside air through the overflow pipe, no pressure due to the water level of the replenishing water tank 7 is generated therein, so that the pressure on the suction side of the pump 3 does not fluctuate. Since the amount is stabilized at a substantially constant value, there is no problem that the amount of water supply is increased and water is excessively supplied to a wick pan or the like.
[0049]
【The invention's effect】
As described above, according to the present invention, in the invention of claim 1, the water circuit is of a pumping type capable of supplying water to the wick water holding container and the humidifying water holding container of the environmental test device via a pump. Therefore, it is possible to solve various problems such as a water leak trouble in the head tank type, a work of transporting water to a high place for water supply to the head tank, and a poor water supply by an air lock.
[0050]
Since the water storage container of this water circuit has a water outlet to which one side member of the socket-like pipe joint having a predetermined configuration is attached, it is possible to bring the socket-like pipe joint into and out of contact with the other side member. Thereby, it is possible to keep the state in which water has been added even when separated. Further, since the water storage container has at least an air opening through which outside air can be introduced, water can be discharged from the water outlet while introducing outside air into the container.
[0051]
Also, since this container is a portable container that can be filled with water by opening the cap, for example, it is formed so that people can carry it without being fixedly installed, so if this can be used as a water transport tank, This eliminates the need for a separate portable water-carrying tank as in the above-described apparatus. As a result, it is possible to save the space by holding down the overall height of the environmental test apparatus.
[0052]
The small water storage container is connected to the other member so that the water in the water storage container is filled therein, and is connected to the pump so as to take out the water, and is fixedly arranged. Here, since the one-side member and the other-side member are easily connected, the water storage container and the small water storage container are easily connected and united, and the water is supplied to the wick and humidification water holding means by both containers. You can replenish. Further, the small water storage container has a volume sufficiently smaller than that of the water storage container, and can be installed anywhere. Therefore, it can be arranged adjacent to the same level as the place where the water storage container is placed. As a result, space saving of the environmental test device can be achieved as described above.
[0053]
In addition, a sufficiently small volume of the small water storage container is defined as a predetermined volume, and a volume that can supply at least one supply of the replenishing water amount to the wick and humidification water holding means, which is usually a sufficiently small amount, is provided so that the water storage container can be small. Water can be replenished even when separated from the water storage container. Therefore, the continuity of the operation of the environmental test device can be maintained. Further, it is possible to easily perform water injection into the water storage container and cleaning of the water storage container that takes a certain amount of time.
[0054]
In addition, since the small water storage container is provided with a water level detecting means capable of detecting the water level of the water, the driver can be notified of the water level state by a normal notification means such as a water level display or an alarm lamp or an alarm bell. . As a result, the driver can separate the water storage container from the small water storage container and inject water into the water storage container at an appropriate timing. Furthermore, since the water reservoir is provided with a conduction port that communicates with the outside air, when the water reservoir and the small water reservoir are connected, the air in the small water reservoir is discharged to introduce water from the water reservoir, and the water level of the small water reservoir is changed. Can be raised and returned to a high position.
[0055]
As described above, the water storage container and the small water storage container have a separate structure, and the water storage container has a water outlet and an air opening to which one side member of a socket-like joint that is easily connected and separated without obstructing mobility is attached. The small water storage container is provided with a connection with a pump that impedes mobility, a connection with external electric wiring of water level detection means, and a water level detection means itself. By making the volume sufficiently smaller, the opening of the water storage container can be minimized, and the danger of water leakage during water transfer and installation can be almost eliminated, and the small water storage container can be as easily as the water storage container. That the small water storage container alone can supply water when needed for the wick and humidification water holding means for the time being, and that the water storage container can be separated from the small water storage container. The water supply means for the wick and humidifier can be maintained in a state where water can be supplied to ensure continuous operation of the environmental test equipment. And various effects can be obtained, such as facilitating the operation of the environmental test apparatus and rationalizing the arrangement.
[0056]
According to the second aspect of the invention, since the check valve is provided at the air opening, only the outside air can be introduced into the water storage container. As a result, even when water is poured into the water storage container and transported, or during installation or other abnormalities, there is no problem that water spills out. Therefore, water filling work and the like can be further facilitated. In addition, since outside air can be introduced, the water surface falls freely and water supply to the small water storage container is secured.
[0057]
According to the third aspect of the present invention, an auxiliary water replenishing facility is provided, and as a part thereof, a replenishing water container having a volume sufficiently larger than that of the small water storage container and provided at a higher position is provided. Even if the amount of water to be replenished to the humidifying water holding means becomes extremely large due to continuous high-humidity operation in, the water in the make-up water container is used as additional make-up water, and water is not supplied to the water storage container without replenishment. Water can be supplied during continuous high-humidity operation without requiring any work.
[0058]
In addition, since a replenishing pipe system is provided which enables replenishment of water from the replenishing water container to the small water storage container, water can be supplied via the small water storage container. Therefore, unlike the case where the makeup water container is directly connected to the suction pipe of the pump, the pressure is not affected by the water level of the makeup water container where the pump is at a high position. As a result, the supply amount of the pump does not fluctuate, and water can be supplied with high accuracy.
[0059]
Furthermore, since the on-off valve provided in the supply pipe system and opened and closed in accordance with the water level detected by the water level detecting means is provided, the water level of the water storage container has decreased, and accordingly the water level of the small water storage container has decreased. Occasionally, the supply pipe system is automatically opened, the water level of the small water storage container is restored by additional water supply from the supply water container, and a state in which water can be supplied to the wick and humidification water holding means is secured. be able to. In addition, since the above-described auxiliary water replenishment equipment is a pump-pressure water circuit, it basically retains its advantages.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a water circuit to which the present invention is applied, wherein (a) is an entire system, (b) is a water level sensor container, (c) is an arrangement of a water storage container, and (d) is a configuration example of a joint. Is shown.
FIGS. 2A and 2B are explanatory views showing an example of the overall configuration of an environmental test apparatus including the water circuit, wherein FIGS. 2A and 2B show a side surface state including a partial cross section and a plane state, respectively.
FIG. 3 is an explanatory diagram showing another configuration example of the water circuit to which the present invention is applied.
[Explanation of symbols]
1 Environmental test equipment
3 pump
4 water storage containers
5 Pipe fittings (socket-shaped pipe fittings)
6 Water level sensor container (small water storage container)
7 Makeup water tank (makeup water container)
8 Supply system
9 Solenoid valve (open / close valve)
11 Wick bread (water container for wick)
12 Humidifying dish (humidifying water holding container)
41 Water outlet
42 intake port (air opening)
45 Check valve
51 Male joint (other side member)
52 female joint (one side member)
63 Float switch for low water level (water level detection means)
64 Float switch for high water level (water level detection means)
65 Overflow pipe (conduction port)

Claims (3)

In a water circuit that can supply water to a wick water holding container and a humidifying water holding container of an environmental test device via a pump,
It is a socket-like pipe joint which is formed so as to be easily opened and closed by fitting and disengaging between one side member and the other side member which are formed so as to be opened when they are connected and closed when the connection is released. A portable water storage container having a water outlet to which the one-side member of the socket-like pipe fitting is attached and an air opening capable of introducing at least outside air and in which the water is put, and the other-side member is The socket-like joint provided so as to be connectable to one side member, and connected to the pump so that the water of the water storage container is put in and is connected to the other side member so that the water is taken out and fixed. A small water storage container provided with a water level detection means arranged and having a predetermined volume sufficiently smaller than that of the water storage container and capable of detecting the water level of the water, and a communication port for communicating with outside air. Water circuit. The water circuit according to claim 1, wherein a check valve is provided in the air opening. A replenishing water container having a volume sufficiently larger than the small water storage container and provided at a position higher than the small water storage container; The water circuit according to claim 1, further comprising an on-off valve provided in a service pipe system and opened and closed in accordance with a water level detected by the water level detection unit.

Images