JP2657546B2 - Bath liquid separator for liquid tank type thermal shock test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid tank type impact test apparatus for testing the durability and strength of components such as small precision equipment or electronic components due to thermal shock, and more particularly to a solution separation apparatus used in this apparatus. It is.

[Prior art]

For components such as precision equipment and electronic components, a thermal shock test is performed to confirm the durability against thermal effects in addition to the general test. A method is adopted in which a liquid bath which exhibits a liquid state at a low temperature and a high temperature liquid bath are alternately transferred and immersed. However, in the conventional method, the temperature cannot be lowered by the chemical used in the low-temperature liquid, so that the durability in the low-temperature region and the temperature difference between the high temperature and the low temperature can be increased. It was difficult, and the test range was narrowed, which was a problem. Therefore, a fluorine-based inert liquid is known as a bath liquid capable of obtaining a large temperature difference, and if this is used, a thermal shock test is also effective. However, since this kind of bath liquid is very expensive, it is immersed. During the removal, it is gradually consumed due to being attached to the sample and being taken out of the bathtub, or being evaporated and dissipated by heating, and the running cost is significantly increased. Not. Therefore, there has been a demand for a device which has been completed as a general-purpose device capable of performing an advanced thermal shock test. Therefore, the present applicant has disclosed Japanese Patent Application Laid-Open No.
-263836 proposes a liquid tank type thermal shock test device. That is, as shown in FIGS. 2 and 3, the inside of the main body 101 formed in a box-shaped frame of required dimensions is separated from the rear half by a partition wall 103 so that the front half becomes the test chamber 102. The upper half of the test chamber 102 is a space for moving test samples and a room temperature test, and the lower half is provided with a low-temperature bath 104 and a high-temperature bath 105 at a required interval. Thus, both the low-temperature bath 104 and the high-temperature bath 105 are formed as vertically long baths (preferably as deep as possible).
At the upper part, sample basket entrances 104 ′ and 105 ′ are respectively limited and open upward, and an opening / closing lid 106, which can be automatically opened and closed by a linear drive (fluid pressure cylinder, electric cylinder, etc.) for each entrance / exit, 106 is provided so that the inside of the tank can be kept airtight when the lid is closed. A cooler 107 for keeping the bath liquid W at a low temperature in a state where the bath liquid W is always immersed in a predetermined liquid is provided in the lower part of the low-temperature bathtub 104.
Is formed in a cylindrical shape in a state in which the sample basket 140 can be received, and a heat tube 108 for heating the bath solution W by the heated gas is provided below the cooler 107. In addition, a heater 109 for increasing the ambient temperature through a heated gas is formed in a tubular shape and disposed immediately below the entrance 104 '. As the bath liquid W to be put into the low-temperature bath 104 as described above, a fluorine-based inert liquid (for example, “Fluorinert FC-77”)
(For low temperature) to the required liquid depth. A high-temperature bathtub 105 provided at a required interval from the low-temperature bathtub 104 has an electric heater 111 for heating the bath liquid W ′ at a lower portion thereof, and a high-temperature bathtub at an upper part of the heater 111 so as to be immersed in the bath liquid. Cooler 112 (used when rapid cooling is required)
A condenser 113 is provided immediately below the entrance 105 '.
Are formed and arranged in a cylindrical shape. A high-temperature fluorine-based inert liquid (for example, “Fluorinert FC-43” (trade name, manufactured by Sumitomo 3M Limited)) is used as a bath liquid in the high-temperature bath 105 to a required liquid depth. The lower temperature fishing tubs 104 and 105 are provided with a bat 115 at the upper portion and the upper surfaces of the bats 115 are connected to each other. The surface of the bat 115 is formed with a downward slope toward the high temperature tub 105, as shown in FIG. The upper surface of the vat 115 and the hot tub 105 are provided with a small hole 116 for inflow of the liquid at a position other than the entrance 105 '(at the position just before the flow gradient), and the liquid is provided just below the condenser 113 in the upper part of the high temperature tub 105. Drain pan 117 to conduit 118
The separator 120 is a closed vessel of an appropriate size, and a heater 122 is disposed on the inner bottom thereof. The reference liquid level of the separator 120 is aligned with the liquid level of the high-temperature bath 105. Are connected to the bottom pipe 123 of the high-temperature bath 105 from the bottom thereof, and the outlet pipe 121 provided at the top of the separator 120 is connected to the heat exchanger 124, and the jacket 12 of the heat exchanger 124
4 ′ contains a low-temperature bath liquid (e.g., Florinert FC-77), which has a boiling point lower than that of a high-temperature bath liquid (Florinert FC-43), which has been evaporated and separated through a refrigerant or cooling water. Boiling point of 174 ° C)
Is condensed and liquefied, and connected to level pots 126 and 126 'via conduits 123' and 127, respectively, so that a constant liquid level is maintained. Each of the level pots 126 and 126 'can be replenished in a reduced amount from a supply tank for each bath solution provided at the upper rear part of the test chamber. The bathtubs 104 and 105 are additionally provided with stirrers, respectively, so as to promote uniformity of the liquid temperature during the work and to work at a stable temperature. The supply of the refrigerant to the coolers and condensers in each of the bathtubs 104 and 105 is connected to a refrigerator installed in a rear chamber (not shown) of the main body 101 and operates to supply a heated gas. Heat gas is supplied to the heaters 108 and 109 from a heated gas supply source. The bath liquid that evaporates and rises in accordance with the immersion heat treatment and liquid drainage of the sample in the bathtub 105 comes into contact with the condenser 113 provided adjacent to the entrance 105 ′, where the evaporation mist is collected and condensed to form a droplet. The waste is dropped and collected on a receiving tray 117 located immediately below the separator 117, and separated by a conduit 118 into a separator 1 of a liquid collecting means.
Guided to 20, the separator 120 stores an appropriate amount of high-temperature bath liquid which is at the same level corresponding to the reference liquid level when the liquid is put into the tank 105 at the time of work, and is disposed in the liquid. Since the liquid introduced by heating by the electric heater 122 (heated to almost 100 ° C.) is also heated, the low-boiling low-temperature bath liquid mixed therein evaporates and is sent from the introduction pipe 121 to the heat exchanger 124. Here, it is cooled and liquefied, then returned to the low temperature bath 104, and both baths are recovered through the separator 120. The recovered amount of the high temperature bath is returned to the high temperature bath 105 through the connecting pipe 123. Will be. In the above-described conventional configuration, a considerable effect can be obtained in the recovery of the bath liquid, but it has been desired to recover the bath liquid more efficiently in this kind of technical field.

[Problems to be solved by the invention]

The present invention has been made in view of such circumstances,
An efficient but highly reliable liquid bath-type thermal shock test system that efficiently collects and separates bath liquid that can perform advanced thermal shock tests with a large temperature difference, but is expensive. To provide a separation device.

[Means for solving the problems]

In order to solve the above problems, the present invention relates to a bath liquid separating apparatus for a liquid tank type thermal shock test apparatus, comprising: Providing a bath liquid collecting device for storing the bath liquid; (b). A separator having a built-in water separation filter which communicates with the bottom of the bath liquid collecting device via a pipe to filter off moisture contained in the bath liquid from the bath liquid collecting device; (c). A separator is provided to communicate with the downstream side of the separator and separates a low-temperature bath liquid and a high-temperature bath liquid having different boiling points contained in the bath liquid from the separator through distillation. Taking technical measures.

[Action]

The low-temperature bath liquid, high-temperature bath liquid, and other bath liquid containing water and the like once stored in the bath liquid recovery device pass through this bath liquid when passing through a separator provided in communication with the bottom of the bath liquid recovery device. The water in the liquid is removed, and then guided to a separator equipped with a distillation mechanism, where the low temperature bath is separated from the high temperature bath by distillation.

【Example】

Hereinafter, an example of use of the bath liquid separator of the liquid tank type thermal shock test apparatus according to the present invention will be described with reference to FIG. The liquid tank type thermal shock test apparatus has the same basic configuration as the conventional configuration. That is, a test chamber 2 having a closed structure in which a sample access door is provided on a front surface is formed in a main body of a box-shaped frame, and a sample basket which is formed vertically in the test chamber 2 and has an automatic opening / closing lid on an upper surface. A low-temperature tub 4 and a high-temperature tub 5 having forty entrances and exits may be arranged at required intervals, and a cooler 7 may be arranged in the low-temperature tub 4 or a heater (not shown) may be arranged therewith. A heater 11 is provided in the lower part of the bathtub, and a condenser 13 is provided immediately below the entrance and exit. The baths 4 and 5 contain fluorine-based inert liquids corresponding to the respective bath temperatures. If it is desired to use the temperature of the bath liquid in the low-temperature bath 4 at a temperature higher than the minimum temperature at the time of the work, a heat tube may be provided in the bath liquid. Warm and adjust to required liquid temperature. Alternatively, a heater can be provided for heating. Further, the sample basket 40 is provided with a traversable carrier 30 which can be stopped at a predetermined position (in the embodiment, a position immediately above both tanks and an intermediate position) in the upper part of the test chamber 2, and the carrier is not shown in the drawing. An elevating mechanism for the process of closing the carry-in / out door with the temporary lid when inserted in the bathtub, and an elevating cylinder for elevating / lowering in the bath,
It is possible to adopt an appropriate configuration such as attaching a liquid shake-off cylinder or the like at an upper position in the tank. Then, with respect to the thermal shock test in which the sample is immersed from the low-temperature bath 4 to the high-temperature bath 5, the operations are sequentially performed in a predetermined order by a program in a controller (not shown) which electrically combines the operations. It moves according to a set time, and can be automatically operated by an automatic control mechanism in which each mechanism operates without any trouble. As a thermal shock test of this sample, in addition to a test in two zones of low temperature and high temperature, a test of three zones of low temperature-normal temperature-high temperature can also be performed. The operation may be performed such that the apparatus is allowed to stand still in the test chamber 2 for a predetermined time at an intermediate position reaching, and then transferred to the high-temperature bath 5 and immersed. Such a liquid tank type thermal shock test apparatus is provided with a bath liquid recovery mechanism 1 described in detail below. That is, the first intake port 1A is provided in the middle of the side wall of the test chamber 2.
And an exhaust port 1D is provided above it. The high-temperature bath 5 below the test chamber 2 is composed of upper and lower two-stage tanks. The upper stage is expanded and the condenser 13 is disposed in an annular shape. It comprises a bathtub body in which a heater 11 is provided. A second intake port 1B is opened in a middle part of the side wall at the upper position where the condenser 13 is provided, and a saucer 17 formed in an annular shape on the step at the hanging position of the condenser 13 is disposed. An outlet 1C communicating with the tray is opened in the side wall. Further, a high-temperature bath liquid inlet 5A is opened on a side wall of the lower tub body of the high-temperature bath 5 and a low-temperature bath liquid inlet 4A is opened on a side wall of the low-temperature bath 4 respectively. The first intake port 1A and the second intake port 1B are each connected to a bath liquid recovery device having a built-in coiled condenser via a pipe.
Connected to 21. The bath liquid recovery device 21 is connected to a suction / exhaust device 22 composed of a motor-driven blower.
Vapors in the test chamber and the high-temperature bath are sucked into the bath liquid recovery device 21 from the second suction ports 1A and 1B, respectively. The sucked vapor is separated into gas and liquid in the bath liquid recovery device 21. The gas separated into gas and liquid in the bath liquid recovery device 21 flows into the test chamber 2 through the switching valve 23 to the outside of the device or from the exhaust port 1D into the test chamber 2 by the exhaust force of the blower 22. The switching valve 23 is an electromagnetic valve in this embodiment,
During the thermal shock test, gas is discharged into the test chamber 2 by a control signal from a controller (not shown), and switching control is performed so that the gas is discharged to the outside for a certain time after the test is completed. As a result, gas containing corrosive gas and the like is discharged to the outside of the apparatus through an exhaust duct or the like, and gas not contained is discharged into the test chamber 2 to ventilate the test chamber 2. Next, the liquid gas-liquid separated in the bath liquid recovery device 21 is dropped by the condenser 13 of the high-temperature bath 5 and is discharged from the receiving tray 17 to the discharge port 1C through the respective pipes. It is injected into the separator 24. In the separator 24, a bath liquid component and water in which other acids, alkalis and the like and HP are dissolved are separated by filtration by a built-in filter 24 ', and the water is drained through a drain port 24A. On the other hand, the separated bath liquid components are then sent to separation devices 25 and 26. The first separator 25 is a closed vessel of an appropriate size and is provided with a heater at the inner bottom, and a second separator 26 provided with a cooler via an outlet pipe provided at the top of the first separator 25. Connected to As a result, the low-temperature bath liquid that has been evaporated and separated has a lower boiling point than the high-temperature bath liquid, so that it evaporates and separates first, so that it can be condensed and liquefied using this, and the high-temperature bath liquid can be used. And a low-temperature bath liquid, and the separated bath liquids are respectively returned to the low-temperature bath 4 from the low-temperature bath liquid inlet 4A and into the high-temperature bath 5 from the high-temperature bath liquid inlet 5A via pipes. be able to. In this embodiment, the depth of the high-temperature bath and the low-temperature bath is set to be deep, and a space is provided between the liquid surface of each bath and the shutter at the entrance and exit of the bath, so that the mist-like bath flows into the test chamber. This is preferable because the amount of bath solution consumption can be further reduced. Further, the carrier for moving the sample and the space for moving the sample are separated, and the volume of the bath liquid adhering to the space wall can be further reduced by minimizing the volume in the moving space (test room). .

【The invention's effect】

According to the bath liquid separator of the present invention, a bath liquid recovery device communicating with the low-temperature test liquid tank and the high-temperature test liquid tank is provided, and further a separator with a built-in filter for removing foreign substances such as moisture, In addition, since a separator equipped with a distillation device is connected in series, expensive bath liquid is efficiently collected, and the bath liquid contaminated with foreign substances such as water is removed through a simple mechanism. It becomes possible to purify and separate from the bath liquid and circulate them for reuse.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a preferred embodiment of the present invention, FIG. 2 is a vertical sectional front view showing a conventional structure, and FIG. 3 is a schematic diagram showing the bath liquid recovery. 1A 1st inlet port 1B 2nd inlet port 1C outlet port 1D outlet port 21 Bath solution recovery device 22 suction / exhaust device 23 switching valve 24 separator 25 first Separator 26: Second separator

Claims (1)

(57) [Claims] 1. A bath liquid collecting device for storing a bath liquid, which is communicated with a bottom portion of the bath liquid collecting device through a pipe to filter water contained in the bath liquid from the bath liquid collecting device. A separator having a built-in water separation filter, and a low-temperature bath liquid and a high-temperature bath liquid having different boiling points contained in the bath liquid from the separator provided in communication with the downstream side of the separator through distillation. And a separator for separating the bath solution from the bath solution of the liquid tank type thermal shock test device.