JP6443629B2 - Sampling bag cleaning apparatus and cleaning method - Google Patents

Description

  The present invention relates to a sampling bag cleaning apparatus used for collecting and analyzing a gas, and a sampling bag cleaning method using the cleaning apparatus.

  Sampling bags are used to collect gas and analyze its components. This sampling bag is used not only for collecting and analyzing environmental gases, but also for collecting and inspecting gases emitted from parts such as automobile interior materials. Yes.

  For example, when a volatile organic compound (VOC) is diffused from a constituent material of an automobile interior material, a so-called thick car syndrome may be caused. For this reason, the types and amounts of VOCs emitted from automobile interior materials are strictly regulated. When interior material manufacturers deliver interior materials to automobile manufacturers, it is possible to inspect the gas emitted from the interior materials. Desired. In this way, when inspecting gas emitted from parts such as automobile interior materials, the parts to be inspected are put in a sampling bag and sealed, and then set in a heating device such as a dryer and heated at a predetermined temperature for a predetermined time. The gas released from the inspection component is collected in the sampling bag. By analyzing the gas collected in the sampling bag with an analyzer such as a gas chromatograph, it is possible to inspect the gas such as VOC emitted from the inspection component.

  FIG. 14 shows an example of a commercially available sampling bag 1, which is formed by processing a colorless transparent film into a rectangular bag shape and attaching a connection port 2 made of a cylindrical resin molded product to one end portion. It is what is done. The inside of the sampling bag 1 is in a sealed state except that it is communicated with the outside through the connection port 2. As the sampling bag 1, there is a two-port type in which two connection ports 2 are provided as shown in FIG. 14 (b) in addition to the one-port type in which one connection port 2 is provided as shown in FIG. 14 (a). In general, the small-capacity sampling bag 1 is formed into a single-port type, and the large-capacity sampling bag 1 is formed into a two-port type.

  Here, the sampling bag is formed of various resin films such as a polyvinyl alcohol film, a polyvinylidene fluoride film, a polyester film, a polyvinyl fluoride (Tedlar: registered trademark) film, and the resin film constituting the sampling bag. If gas is released from the gas, this gas may be mixed into the gas to be inspected. Especially when inspecting parts such as automobile interior materials, cut the sampling bag, put the parts to be inspected, seal the cut part with heat seal, clip stop, tape stop, etc. Since gas is dissipated by heating the inspection part in the sampling bag by putting it in the heating device, gas is easily dissipated from the resin film constituting the sampling bag by this heating, and this gas is inspected. There is a risk that it will not be possible to conduct an accurate inspection due to being mixed into the gas.

  Therefore, the sampling bag is washed before performing an inspection for collecting and analyzing the gas in the sampling bag. For example, in Patent Document 1, a cleaning gas such as nitrogen gas is supplied and filled in the sampling bag, and after the sampling bag is heated at a predetermined temperature for a predetermined time in this state, the cleaning gas in the sampling bag is sucked by a vacuum pump. I try to pull it out. When gas is released from the sampling bag by heating the sampling bag, this gas can be discharged together with the cleaning gas at the same time when the cleaning gas is withdrawn, so that the inside of the sampling bag can be cleaned with the cleaning gas It is. Normally, this operation is repeated as a cycle a plurality of times, thereby completing the cleaning of the sampling bag.

Utility Model Registration No. 3178212

  In Patent Document 1 described above, dry gas that is not humidified such as nitrogen gas is used as the cleaning gas for cleaning the sampling bag. However, dry gas is less effective in cleaning the sampling bag. For this reason, as described above, the sampling bag is filled with the cleaning gas, heated at a predetermined temperature for a predetermined time, then the cleaning gas is extracted from the sampling bag, and the sampling bag is filled again with the cleaning gas. There is a problem that it is necessary to perform cleaning repeatedly, and it takes a long time to clean the sampling bag.

  On the other hand, as a cleaning gas, a method of using a humidified gas that is humidified and contains water vapor has been studied. In the cleaning method using the humidified gas, the gas diffused from the sampling bag is adsorbed by the moisture of the humidified gas, so that the cleaning effect is high. For this reason, the sampling bag can be efficiently cleaned by passing the humidified gas through the sampling bag for a predetermined time while putting the sampling bag in a heating device such as a dryer and heating at a predetermined temperature. There is no need to repeat the operation of filling the sampling gas into the sampling bag and the operation of extracting with the vacuum pump a plurality of times as in the case of the above-mentioned Patent Document 1.

  Although the concrete apparatus of the humidification gas washing | cleaning method which wash | cleans this sampling bag 1 with humidification gas is not yet established in the industry, the following problems are anticipated. That is, when the inside of the sampling bag 1 is cleaned with a humidified gas, the humidified gas has a high moisture content, so that moisture tends to remain in the sampling bag 1, and this moisture may affect the gas analysis inspection. is expected.

  Then, when the sampling bag 1 is cleaned by passing the humidified gas through the sampling bag 1 for a predetermined time, the humidified gas is connected from the connection port 2 into the sampling bag 1 as indicated by an arrow a in FIG. It is necessary that the humidified gas in the sampling bag 1 exits from the same connection port 2 as indicated by an arrow b, but is supplied from the connection port 2 into the sampling bag 1 as indicated by an arrow c. If the humidified gas immediately comes out of the connection port 2 in a short circuit as it is, the humidified gas does not reach the end of the sampling bag 1 and there is a risk that the end of the sampling bag 1 will be insufficiently cleaned. There is a problem that the sampling bag 1 cannot be washed uniformly. In the case of a two-port type provided with two connection ports 2 as shown in FIG. 14B, humidified gas is supplied into the sampling bag 1 from one connection port 2 and humidified from the other connection port 2. Although the gas can be discharged, since the two connection ports 2 are provided on the same side of the sampling bag 1, the humidified gas does not reach the back of the sampling bag 1, and one of the connection ports 2 In this case, the sampling bag 1 cannot be washed uniformly as well.

  In addition, as described above, when the inside of the sampling bag 1 is cleaned with the humidified gas, moisture tends to remain in the sampling bag 1, so that the sampling bag 1 is allowed to pass through the sampling bag 1 for a predetermined time, and then the sampling bag is sampled. It is conceivable that dry gas that has not been humidified is supplied into the bag 1, the humidified gas in the sampling bag 1 is expelled and discharged, and the sampling bag 1 is further dried with dry gas.

  At this time, supply of the dry gas into the sampling bag 1 is performed through the connection port 2 as indicated by an arrow d in FIG. 15B, but the humidified gas in the sampling bag 1 driven out by the supply of the dry gas has the same connection. It will be discharged from the mouth 2 in a short circuit as shown by the arrow e. For this reason, although the humidified gas existing in the vicinity of the connection port 2 exits from the connection port 2 in a short time as indicated by the arrow g by the dry gas flowing into the sampling bag 1 through the connection port 2 as indicated by the arrow f. Since the dry gas supplied from the connection port 2 does not easily reach the end in the sampling bag 1, the humidified gas in the end of the sampling bag 1 is completely expelled by the dry gas and discharged from the connection port 2. There is a problem that it takes time to dry the inside of the sampling bag 1 in a short time. Also in the case of a two-port type provided with two connection ports 2 as shown in FIG. 14B, the humidified gas near the connection port 2 is expelled in a short circuit for the same reason as described above, and the same problem occurs. is there.

  In particular, if the dry gas does not reach the end of the sampling bag 1, the sampling bag 1 does not bulge at the end, the inner surfaces overlap each other, and the dew that has come out of the humidified gas at the overlapping and closely attached portion of the end There is a risk of moisture permeating through capillary action. Thus, when moisture enters the end portion of the sampling bag 1 by capillary action, the moisture does not easily evaporate, so that there is a problem that it is very difficult to dry the sampling bag 1.

  The present invention has been made in view of the above points, and it is possible to efficiently clean the sampling bag in a short time using the humidified gas, and to uniformly clean the inside of the sampling bag with the humidified gas, Moreover, it is an object of the present invention to provide a sampling bag drying apparatus and drying method capable of drying the sampling bag with a dry gas in a short time.

  The sampling bag cleaning apparatus according to the present invention supplies a humidified gas tube 4 for supplying a humidified gas into the sampling bag 1 to clean the sampling bag 1 with the humidified gas, and supplies a dry gas into the sampling bag 1. The humidifying gas is expelled and the inside of the sampling bag 1 is dried, and the humidifying gas tube 4 and / or the drying gas tube 5 are attached to the connection port 2 provided in the sampling bag 1. And the humidifying gas tube 4 so that the humidifying gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1 in a state where the connecting attachment 3 is connected to the connection port 2 of the sampling bag 1. Each tip of the dry gas tube 5 protrudes from the connection attachment 3 In the state where the connection attachment 3 is connected to the connection port 2 of the sampling bag 1, the connection attachment 3 is provided with an exhaust port 6 that communicates with the outside through the connection port 2 in the sampling bag 1. .

  Thus, since the humidified gas tube 4 for supplying the humidified gas into the sampling bag 1 and cleaning the sampling bag 1 with the humidified gas is provided, the sampling bag 1 is efficiently cleaned with the humidified gas in a short time. In addition, since the dry gas tube 5 for supplying the dry gas into the sampling bag 1 to drive out the humidified gas and drying the sample bag 1 is provided, no moisture remains in the sampling bag 1. It is possible to eliminate the influence of moisture on the gas analysis test.

  The humidified gas tube 4 and the dry gas tube 5 are attached to the connection attachment 3. When the connection attachment 3 is connected to the connection port 2 of the sampling bag 1, the humidified gas tube 4 and the dry gas tube 5 are connected to the sampling bag 1. Since each tip of the humidified gas tube 4 and the dry gas tube 5 protrudes from the connection attachment 3 so as to be inserted into the inside, when the connection attachment 3 is connected to the connection port 2 of the sampling bag 1, the humidified gas tube 4 and the dry gas tube 4 are dried. The tip of the gas tube 5 is inserted into the sampling bag 1, and the humidified gas supplied through the humidified gas tube 4 is blown to a position away from the connection port 2 in the sampling bag 1 and flows through the sampling bag 1. After exhausting the connection attachment 3 through the connection port 2 6, and the humidified gas supplied from the connection port 2 into the sampling bag 1 does not immediately come out of the connection port 2 in a short circuit, and the sampling bag 1 has an end portion in the sampling bag 1. The humidified gas can be spread all the way, and the entire interior of the sampling bag 1 can be uniformly cleaned by the humidified gas that is blown into and passed through the sampling bag 1. The dry gas supplied through the dry gas tube 5 is also blown to a position away from the connection port 2 in the sampling bag 1, flows through the sampling bag 1, and is discharged through the connection port 2. The humidified gas remaining in 1 can be expelled to the connection port 2 with a dry gas and discharged from the exhaust port 6, and no humid gas remains in the sampling bag 1. The inside of the sampling bag 1 can be dried. Moreover, since the dry gas is blown into the interior of the sampling bag 1 and spreads throughout the sampling bag 1, it is possible to prevent the inner surfaces from overlapping each other at the end of the sampling bag 1, and the condensed moisture generated from the humidified gas is absorbed into the capillary tube. It is possible to prevent permeation due to the phenomenon and not easily evaporating, and the sampling bag 1 can be reliably dried.

  The present invention also provides the humidified gas tube 4 and / or the dry gas in a state where the humidified gas tube 4 and / or the dry gas tube 5 is slidably inserted into the tube insertion hole 8 provided in the connection attachment 3. The tube 5 is attached to the connection attachment 3.

  By sliding the humidified gas tube 4 and the dry gas tube 5 in the tube insertion hole 8 of the connection attachment 3 in the tube longitudinal direction, the humidified gas tube 4 and the dry gas tube 5 are connected to the distal end side from the connection attachment 3. The protruding length dimension can be adjusted, and by adjusting this dimension of the humidified gas tube 4 and the dry gas tube 5 in accordance with the size of the sampling bag 1, sampling of any commercially available size is possible. Corresponding to the bag 1, the sampling bag 1 can be cleaned with the humidified gas tube 4 and the dry gas tube 5 inserted deep inside the sampling bag 1.

  The present invention also provides the humidifying gas tube 4 and the drying gas in the connection attachment 3 with the humidifying gas tube 4 and the drying gas tube 5 inserted through the pair of tube insertion holes 8a and 8b provided in the connection attachment 3, respectively. A tube 5 is mounted, and one connection attachment 3 is provided for one sampling bag 1.

  According to this invention, since the humidification gas tube 4 and the dry gas tube 5 are attached to one connection attachment 3, the humidification gas tube can be obtained simply by connecting one connection attachment 3 to the connection port 2 of the sampling bag 1. 4 and the dry gas tube 5 can be inserted into the sampling bag 1 for cleaning, and the cleaning operation is facilitated.

  In the present invention, the humidified gas tube 4 or the dry gas tube 5 is attached to the connection attachment 8 in a state in which the humidified gas tube 4 or the dry gas tube 5 is inserted into one tube insertion hole 8 provided in the connection attachment 3. It is characterized by comprising a connection attachment 3 with a humidified gas tube 4 attached to one sampling bag 1 and a connection attachment 3 with a dry gas tube 5 attached.

  According to this invention, since the humidification gas tube 4 and the dry gas tube 5 are attached to the connection attachment 3 one by one, the humidification gas tube 4 and the dry gas tube 5 having a large diameter and a large gas flow rate should be used. By connecting the connection attachment 3 fitted with the humidified gas tube 4 and the connection attachment 3 fitted with the dry gas tube 5 to the large-capacity sampling bag 1 having a plurality of connection ports 2 respectively, The sampling bag 1 can be efficiently cleaned.

  The present invention is also provided with a humidified gas on-off valve 10 provided in a path for supplying gas to the humidified gas tube 4 and a dry gas on-off valve 11 provided on a path for supplying gas to the dry gas tube 5. After opening the on-off valve 10 for the humidified gas for a predetermined time, after the predetermined time has passed, the on-off valve 10 for the humidified gas is closed and the on-off valve 11 for the dry gas is opened. A humidifying gas on-off valve 10 and a control unit 12 for controlling the dry gas on-off valve 11 are provided so as to close the on-off valve 11.

  According to the present invention, the connection attachment 3 is connected to the sampling bag 1, the humidified gas tube 4 or the dry gas tube 5 is inserted into the sampling bag 1, and the gas is supplied to the humidified gas tube 4 from the humidified gas tube 4. When the cleaning is started by supplying the humidifying gas to the sampling bag 1, the control unit 12 then stops the supply of the humidifying gas after a predetermined time and starts the supply of the drying gas. The supply is stopped after a predetermined time, and the cleaning of the sampling bag 1 with the humidified gas and the drying of the sampling bag 1 with the dry gas can be automatically performed.

  Further, the present invention is characterized in that a humidified gas tube 4 and a dry gas tube 5 are paired, and a plurality of humidified gas tubes 4 and dry gas tubes 5 are provided.

  In this manner, the humidified gas tubes 4 and the dry gas tubes 5 are set in the plurality of sampling bags 1 by providing the plural pairs of the humidified gas tubes 4 and the dry gas tubes 5 and the corresponding number of connection attachments 3. The plurality of sampling bags 1 can be simultaneously cleaned in parallel. For example, automobile interior materials may be required to inspect the emitted gas for multiple samples, but the multiple sampling bags 1 used for multiple samples can be cleaned at the same time to support inspection. Is something that can be done.

  The present invention also includes a humidified gas generator 19 that generates a humidified gas by submerging gas in water, and includes a water heater 55 that heats the water in the humidified gas generator 19. Is.

  In this way, when the humidified gas is generated by submerging the gas in water and adding moisture to the gas, the humidity of the humidified gas can be increased by heating the water and increasing the temperature. The sampling bag 1 can be efficiently cleaned with a high humidified gas.

  The present invention also includes a heating device 29 for heating the sampling bag 1, and is configured such that the heating temperature of the water in the humidified gas generator 19 is set higher than the heating temperature of the sampling bag 1 that is cleaned through the humidified gas. It is characterized by.

  By heating the sampling bag 1 with the heating device 29, the gas components contained in the sampling bag 1 are easily dissipated, so that the effect of cleaning the sampling bag 1 can be enhanced. By setting the heating temperature of the humidified gas generator 19 higher than the heating temperature, the humidity (relative humidity) of the humidified gas supplied into the sampling bag 1 can be maintained high, and the humidified gas having a high humidity. Thus, the effect of cleaning the sampling bag 1 can be enhanced.

  Further, the present invention includes a suction device 13 that sucks and discharges the dry gas in the sampling bag 1 through the dry gas tube 5 after supplying the dry gas from the dry gas tube 5 to dry the inside of the sampling bag 1. It is a feature.

  In the state in which the inside of the sampling bag 1 is dried with the dry gas, the dry gas remains in the sampling bag 1, but the sampling bag 1 has a large capacity by being sucked by the suction device 13 and discharged. Even in such a case, the dry gas can be reliably extracted from the sampling bag 1 in a short time.

  In the sampling bag cleaning method according to the present invention, when the sampling bag 1 is cleaned using the above sampling bag cleaning apparatus, the connection attachment 3 is connected to the connection port 2 of the sampling bag 1 and the connection attachment 3 is attached. The humidified gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1, and the humidified gas is supplied into the sampling bag 1 through the humidified gas tube 4 and the humidified gas in the sampling bag 1 is connected to the exhaust port 6 of the attachment 3. , The humidified gas is allowed to pass through the sampling bag 1 and the sampling bag 1 is washed with the humidified gas, and then the dry gas is supplied into the sampling bag 1 through the dry gas tube 5. Humidified gas Drying the sample bag 1 with a dry gas while discharging from the exhaust port 6 of the connecting attachment 3 out have is characterized in.

  According to this method, the sampling bag 1 can be efficiently cleaned in a short time with the humidified gas supplied from the humidified gas tube 4 into the sampling bag 1, and the drying supplied from the dry gas tube 5 into the sampling bag 1 is performed. It is possible to dry the inside of the sampling bag 1 with gas so that moisture does not remain, so that moisture does not affect the inspection of gas analysis. Then, the humidified gas supplied into the sampling bag 1 through the humidified gas tube 4 is blown to a position away from the connection port 2 in the sampling bag 1, flows through the sampling bag 1, and then flows through the connection port 2 through the connection port 3. The exhaust gas is exhausted from the exhaust port 6, and the humidified gas supplied from the connection port 2 into the sampling bag 1 does not immediately go out of the connection port 2 in a short-circuit, so that the inside of the end portion of the sampling bag 1 is eliminated. Thus, the entire sampling bag 1 can be uniformly washed with the humidified gas that is blown into and passed through the sampling bag 1. Further, the dry gas supplied into the sampling bag 1 through the dry gas tube 5 is also blown to a position away from the connection port 2 in the sampling bag 1 and is discharged through the connection port 2 after flowing through the sampling bag 1. The humidified gas remaining in the sampling bag 1 can be expelled to the connection port 2 with the dry gas and discharged from the exhaust port 6, and the humidified gas does not remain in the end portion of the sampling bag 1. Thus, the inside of the sampling bag 1 can be dried in a short time. Moreover, since the dry gas is blown into the interior of the sampling bag 1 and spreads throughout the sampling bag 1, it is possible to prevent the inner surfaces from overlapping each other at the end of the sampling bag 1, and the condensed moisture generated from the humidified gas is absorbed into the capillary tube. It is possible to prevent permeation due to the phenomenon and not easily evaporating, and the sampling bag 1 can be reliably dried.

  According to the present invention, the sampling bag 1 can be efficiently cleaned in a short time with the humidified gas supplied from the humidified gas tube 4 into the sampling bag 1, and the drying supplied from the dry gas tube 5 into the sampling bag 1 is performed. It is possible to dry the inside of the sampling bag 1 with gas so that moisture does not remain, so that moisture does not affect the inspection of gas analysis. Since the humidified gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1, the humidified gas supplied through the humidified gas tube 4 is blown into a position away from the connection port 2 in the sampling bag 1. The exhaust gas is exhausted from the exhaust port 6 of the connection attachment 3 through the connection port 2 after flowing through the inside, so that the humidified gas does not come out of the connection port 2 in a short circuit, and the end in the sampling bag 1 The humidified gas can be spread to the part, and the entire interior of the sampling bag 1 can be uniformly cleaned by the humidified gas blown into and passed through the sampling bag 1. The dry gas supplied through the dry gas tube 5 is also blown to a position away from the connection port 2 in the sampling bag 1, flows through the sampling bag 1, and is discharged through the connection port 2. The humidified gas remaining in 1 can be expelled to the connection port 2 with a dry gas and discharged from the exhaust port 6, and no humid gas remains in the sampling bag 1. The inside of the sampling bag 1 can be dried.

BRIEF DESCRIPTION OF THE DRAWINGS An example of embodiment of this invention is shown, (a) is schematic, (b) is a partial expanded sectional view. An example of a connection attachment is shown, (a) is a perspective view, (b) is sectional drawing, (c) is a side view. The humidification gas tube and the dry gas tube are attached to the connection attachment, and (a) is a perspective view and (b) is a cross-sectional view. The flow of gas at the time of cleaning the sampling bag will be described, and (a) and (b) are sectional views. FIG. 9 shows a change in humidity in the sampling bag when the sampling bag is washed, (a) is a graph showing a change in humidity when the sampling bag is washed as shown in FIG. 4, and (b) is a graph showing FIG. It is a graph which shows the change of the humidity at the time of wash | cleaning a sampling bag as mentioned above. It is a front view which shows the system of a sampling bag cleaning apparatus. It is the schematic which shows an example of the system of the washing | cleaning apparatus which wash | cleans several sampling bags. It is sectional drawing which shows an example of embodiment which heats a humidification gas generator. It is a graph which shows the change of the humidity in a sampling bag at the time of supplying the humidification gas produced | generated by heating a humidification gas generator to a sampling bag. It is a front view which shows an example of embodiment which connected the humidification gas generator in series. The other example of a connection attachment is shown, (a) is sectional drawing, (b) is sectional drawing of the state equipped with the humidification gas tube or the dry gas tube. It is the schematic which shows the state which connects and connects a connection attachment same as the above to a sampling bag. It is the schematic which shows an example of the system of the sampling bag washing | cleaning apparatus in embodiment using a suction device. An example of a sampling bag is shown and (a) and (b) are perspective views, respectively. The flow of the gas in a conventional example is demonstrated, (a) (b) is a perspective view, respectively.

  Embodiments of the present invention will be described below.

  FIG. 2 shows an example of the connection attachment 3, which is formed in a columnar shape as a whole as shown in FIG. As shown in FIG. 2 (b), one end of the connection attachment 3 is formed as a cylindrical tubular connection portion 7 having a hollow portion 7a that opens only on one end surface on the inner periphery. The distal end portion of the cylindrical connecting portion 7 is formed as a connecting flange 15 having a small diameter. A hole is formed in a radial direction at one location of the connection attachment 3, and this hole communicates with the inner cavity portion 7 a of the cylindrical connection portion 7, and serves as an exhaust port 6 of the connection attachment 3. Open to the outer peripheral surface.

  Further, a tube insertion hole 8 having a circular cross section is formed at the end of the connection attachment 3 opposite to the cylindrical connection portion 7. As shown in FIG. 2C, the tube insertion hole 8 is disposed in the center of the connection attachment 3, and one end of the tube insertion hole 8 is the end surface of the connection attachment 3, and the other end is At the end face of the hollow portion 7a of the cylindrical connecting portion 7, it is formed so as to open.

  In the embodiment shown in FIG. 2, a pair of tube insertion holes 8 are provided in the connection attachment 3, and the tube insertion holes 8a and 8b are arranged close to each other in parallel. A pair of circular packing accommodating recesses 16, 16 are formed in the end face of the connection attachment 3, and each tube insertion hole 8 a, 8 b is opened at the center of the bottom surface of the O-ring accommodating recesses 16, 16. is there.

  As the humidified gas tube 4 and the dry gas tube 5, those having a diameter of about 1.5 to 3 mm formed into a flexible tubular shape with a fluorine-based resin or the like can be used. Here, the inner diameters of the tube insertion holes 8 a and 8 b are formed to be slightly larger than the diameters of the humidified gas tube 4 and the dry gas tube 5, and the hollow portion 7 a of the cylindrical connection portion 7 is formed. The inner diameter is formed to have a larger dimension than the combined diameter of the humidified gas tube 4 and the dry gas tube 5.

  Then, the humidified gas tube 4 is inserted into the tube insertion hole 8a, and the dry gas tube 5 is inserted into the tube insertion hole 8b, and is passed through the cylindrical connection portion 7 so as to be led out through the cylindrical connection portion 7, thereby being supplied to the connection attachment 3 as shown in FIG. A tube 4 and a dry gas tube 5 are attached. The humidified gas tube 4 and the dry gas tube 5 can be moved in the tube longitudinal direction as shown by arrows in FIG. 3 by sliding in the tube insertion holes 8a and 8b. At this time, an elastic O-ring 17 is fitted in each O-ring housing recess 16, and the humidified gas tube 4 and the dry gas tube 5 are passed through the inner periphery of the O-ring 17. The outer periphery of the dry gas tube 5 is in elastic contact with the O-ring 17. Therefore, when the humidified gas tube 4 and the dry gas tube 5 are slid along the tube insertion holes 8a and 8b, resistance due to this elastic contact is received, and the humidified gas tube 4 and the dry gas tube 5 are carelessly formed. It is possible to prevent sliding movement. Further, the O-ring 17 ensures airtightness between the humidified gas tube 4 or the dry gas tube 5 and the tube insertion holes 8a and 8b.

  As described above, the humidified gas tube 4 attached to the connection attachment 3 is supplied with the humidified gas, and the dry gas tube 5 is supplied with the dry gas. As these gases, it is preferable to use an inert gas such as nitrogen gas, but air in the atmosphere can also be used. In the case of air, it is desirable to use it after cleaning it through a filter.

  In the present invention, the humidified gas is humidified by replenishing moisture to a gas such as nitrogen gas or air. For example, a humidified gas by passing the gas through water can be used. In the embodiment of FIG. 1, the humidified gas is prepared using a humidified gas generator 19 formed by a humidified bottle or the like. The humidified gas generator 19 is filled with water 20 and sealed with a lid 21, and the other end of the humidified gas tube 4 attached with one end inserted through the connection attachment 3 is inserted through the lid 21. It is attached. The end of the humidified gas tube 4 is positioned in a space above the water surface of the water 20 in the humidified gas generator 19. A gas tube 22 for supplying a gas such as nitrogen gas or air is connected to the humidified gas generator 19. The gas tube 22 is inserted and attached to the lid 21, and its tip is immersed in the water 20. When the gas is sent through the gas tube 22, the gas is supplied into the humidified gas generator 19 through the water 20 from the tip of the gas tube 22. By bubbling the gas in the water 20 in this way, moisture is contained in the gas as water vapor, and the humidified gas is increased in humidity. The humidified gas is sent from the humidified gas generator 19 to the humidified gas tube 4.

  In the embodiment of FIG. 1, a backflow prevention container 23 formed of a backflow prevention bottle or the like is provided in the middle of the gas tube 22. That is, the gas tube 22 is cut in the middle, and the cut ends are inserted into the backflow prevention container 23 through the lid 24 of the backflow prevention container 23 and attached. When the humidified gas supplied to the sampling bag 1 through the humidified gas tube 4 flows back through the humidified gas tube 4, the pressure in the humidified gas generator 19 increases, so that the water 20 in the humidified gas generator 19 flows into the gas tube 22. May flow backward. As described above, even if the water 20 flows backward through the gas tube 22, the water flows into the backflow prevention container 23 and is stored, and the gas tube 22 can be prevented from flowing back further. In addition, if activated carbon etc. are put in the backflow prevention container 23, the impure component in the gas supplied through the gas tube 22 can be made to adsorb | suck to activated carbon, and the humidified gas tube 4 is made into the state which cleaned the gas. It can be sent.

  Here, in addition to using the humidified gas generator 19 as described above, the moisture generated by heating the water is mixed with a gas such as nitrogen gas or air when the gas is replenished with moisture. Any method such as a humidifying method can be employed.

  In the present invention, the dry gas may be any gas that contains less moisture than the humidified gas, and the gas before replenishing the moisture and humidifying can be used as it is. At this time, as long as it is supplied from a gas cylinder such as nitrogen gas, it can be used as it is. However, when air in the atmosphere is used, it is desirable to dehumidify and use it when the humidity is high.

  Hereinafter, a method for cleaning the sampling bag 1 will be described. As the sampling bag 1, any commercially available one such as the one shown in FIG. 14 can be used. Since sampling bags 1 of various sizes are commercially available, the length of the humidified gas tube 4 and the dry gas tube 5 protruding from the cylindrical connection portion 7 of the connection attachment 3 according to the size of the sampling bag 1. Adjust the height. As described above, the humidified gas tube 4 and the dry gas tube 5 can be moved in the tube longitudinal direction by sliding in the tube insertion holes 8a and 8b, so that the humidifying gas tube 4 and the dry gas tube 5 are humidified from the cylindrical connection portion 7 of the connection attachment 3. The length by which the gas tube 4 and the dry gas tube 5 protrude can be easily adjusted. It is desirable that the length to be adjusted substantially matches the distance from the connection port 2 of the sampling bag 1 to the end of the farthest corner from the connection port 2 of the sampling bag 1 formed in a rectangular shape. It is sufficient to adjust the length of the humidified gas tube 4 or the dry gas tube 5 so that the tip is inserted near the center of the sampling bag 1 or deeper. May protrude from the connection attachment 3 with a length located at least in the center of the sampling bag 1. As described above, the humidified gas tube 4 and the dry gas tube 5 are themselves adjusted so that the length can be adjusted to substantially match the distance from the connection port 2 to the end of the farthest corner in the sampling bags 1 of various sizes. What has sufficient length is used, and it is necessary to use the humidification gas tube 4 and the dry gas tube 5 in a dimension longer than the diagonal line of the largest sampling bag 1 to be used.

  First, the humidified gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1 through the inner periphery of the cylindrical connection port 2 of the sampling bag 1. At this time, as shown in FIG. 4, the humidified gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1 so that the tips of the humidified gas tube 4 and the dry gas tube 5 are located in the end portion of the sampling bag 1. It is desirable that the tip of the humidified gas tube 4 or the dry gas tube 5 be positioned in the corner of the end furthest from the connection port 2, but usually the tip of the humidified gas tube 4 or the dry gas tube 5 is sampled. It is sufficient if it is inserted so as to be located behind the center of the bag 1. Here, when the humidified gas tube 4 or the dry gas tube 5 protrudes from the connection attachment 3 when the length is too short or too long, the humidified gas tube 4 or the dry gas tube 5 is inserted into the sampling bag 1 and humidified. The length protruding from the connection attachment 3 may be adjusted by sliding the gas tube 4 or the dry gas tube 5.

  With the humidified gas tube 4 and the dry gas tube 5 inserted in the sampling bag 1 in this way, the connection attachment 3 is connected to the connection port 2 of the sampling bag 1 and fixed. The connection port 2 and the connection attachment 3 are connected using a joint tube 26 formed in a cylindrical shape with an elastic material such as silicon, and the connection port 2 is formed on the inner periphery of both sides of the joint tube 26 as shown in FIG. And the connecting flange 15 of the cylindrical connection portion 7 of the connection attachment 3 can be inserted and engaged with each other. Since the outer diameter of the connection port 2 of the sampling bag 1 is slightly different for each manufacturer, the connection port 2 and the cylindrical connection portion 7 of the connection attachment 3 are connected while absorbing the difference in the outer diameter of the connection port 2. In order to achieve this, an elastic joint cylinder 26 is used.

  Here, when the sampling bag 1 provided with one connection port 2 is washed as shown in FIG. 14A, the inside of the sampling bag 1 is sealed by connecting the connection attachment 3 to the connection port 2. However, when cleaning the sampling bag 1 provided with a plurality of connection ports 2 as shown in FIG. 14 (b), by closing the connection port 2 to which the connection attachment 3 is not connected is closed, The inside of the sampling bag 1 is sealed.

  Next, a gas such as nitrogen gas or air is sent out through the gas tube 22. This gas is humidified when passing through the humidified gas generator 19, becomes a humidified gas, is sent through the humidified gas tube 4, and is supplied into the sampling bag 1. The humidified gas is blown into the sampling bag 1 from the tip of the humidified gas tube 4, and the tip of the humidified gas tube 4 is inserted deeply into the sampling bag 1, so that the humidified gas is connected to the connection port 2 of the sampling bag 1. It is blown into the place far away from. Thus, when the humidified gas is blown deeply into the sampling bag 1 from the tip of the humidified gas tube 4, the humidified gas is sent to the end of the sampling bag 1, the end of the sampling bag 1 swells, and then the connection port The humidified gas flows through the sampling bag 1 so that the portion that swells toward the side 2 expands. That is, as shown by a solid line arrow in FIG. 4A, the humidified gas flows in the entire region of the sampling bag 1 from the back end of the sampling bag 1 toward the connection port 2. When the amount of humidified gas exceeding the capacity of the sampling bag 1 is blown, the amount of humidified gas exceeding the capacity flows out from the connection port 2 into the hollow portion 7 a of the cylindrical connection portion 7 of the connection attachment 3, and enters the connection attachment 3. It exhausts through the provided exhaust port 6.

  As described above, the humidified gas can be continuously flowed into the sampling bag 1 by continuously blowing the humidified gas into the sampling bag 1 through the humidified gas tube 4 while discharging the humidified gas from the exhaust port 6. The inside of the sampling bag 1 can be cleaned with the humidified gas flowing into the sampling bag 1. Here, the humidified gas contains a lot of moisture, and the gas emitted from the sampling bag 1 is easily adsorbed by the moisture. Therefore, the humidified gas is absorbed in the humidified gas. At the same time, it can be discharged from the exhaust port 6. Therefore, it is possible to perform the cleaning efficiently and with a high effect by performing the humid cleaning using the humidified gas as the gas for cleaning the sampling bag 1.

  In addition, the humidified gas is blown from the humidified gas tube 4 toward the back of the sampling bag 1 as described above, so that the humidified gas is connected to the connection port from the back of the sampling bag 1 as indicated by the solid line arrow in FIG. After flowing in the direction 2, the humidified gas is discharged through the connection port 2 and flows into the sampling bag 1 from the connection port 2 as indicated by the broken line arrow c in FIG. Is not immediately discharged from the connection port 2 in a short circuit. Accordingly, the humidified gas is exhausted after flowing through the entire surface of the sampling bag 1, and the humidified gas can be filled in the sampling bag 1, so that the humidified gas can be filled with the humidified gas. Can be uniformly humidified and washed.

  As described above, when the humidified gas is passed through the sampling bag 1 for cleaning, the sampling bag 1 is generally heated while being heated as described later. For example, in the case of the sampling bag 1 having a capacity of 10 L, when humidification cleaning is performed with the heating temperature set to 80 ° C. and the flow rate of the humidified gas set to 200 mL / min, the humidified gas is passed through the sampling bag 1 for about 3 to 5 hours. This completes the humidification cleaning.

  After the inside of the sampling bag 1 is washed with the humidified gas as described above, the supply of the humidified gas through the humidified gas tube 4 is stopped, and then the dry gas is supplied to the sampling bag 1 through the dry gas tube 5. Since the dry gas is blown into the sampling bag 1 from the tip of the dry gas tube 5 and the tip of the dry gas tube 5 is inserted into the back of the sampling bag 1, the dry gas is connected to the connection port 2 of the sampling bag 1. It is blown in a position far from. When the dry gas is blown into the sampling bag 1 from the tip of the dry gas tube 5 in this way, the dry gas is sent to the end of the sampling bag 1, and as shown by the solid line arrow in FIG. It flows from the end of 1 toward the connection port 2 side. The humidified gas in the sampling bag 1 is pushed toward the connection port 2 by the flow of this dry gas as shown by a chain line arrow in FIG. 4B, and the cylindrical connection portion 7 of the connection attachment 3 from the connection port 2. And is discharged from the exhaust port 6. At this time, the dry gas flows from the back of the sampling bag 1 toward the connection port 2 as indicated by the solid line arrow, and is then discharged through the connection port 2. FIG. 15 (b) described above. The dry gas that has flowed into the sampling bag 1 from the connection port 2 is not immediately discharged from the connection port 2 in a short-circuited manner as indicated by the broken line arrow f. Therefore, the humidified gas can be expelled from the sampling bag 1 with the dry gas and completely discharged without leaving the humidified gas in the sampling bag 1, and the sampling bag 1 is efficiently dried. It is something that can be done.

  Further, since the dry gas is blown from the tip of the dry gas tube 5 inserted in the back of the sampling bag 1, the gas pressure of the dry gas in the end portion of the sampling bag 1 is high. When the gas pressure in the end portion of the sampling bag 1 is low, the swell at the end portion of the sampling bag 1 disappears and the inner surfaces overlap each other, and dew condensation moisture from the humidified gas permeates into this overlapped and adhered portion by capillary action. Although it becomes difficult to dry the inside of the sampling bag 1, since the gas pressure of the dry gas in the end portion of the sampling bag 1 can be secured high, it is possible to prevent the inner surfaces of the sampling bag 1 from overlapping each other. It is possible to prevent condensation water from remaining due to capillary action.

  Even when the inside of the sampling bag 1 is dried by passing the dry gas through the sampling bag 1 as described above, the sampling bag 1 is generally heated while being described later. For example, in the case of the sampling bag 1 having a capacity of 10 L, when drying is performed with the heating temperature set to 80 ° C. and the flow rate of the drying gas set to 200 mL / min, the drying gas is passed through the sampling bag 1 for about 20 to 40 minutes. Can complete the drying. As described above, the cleaning process of the sampling bag 1 using the humidified gas and the dry gas can be completed.

  Here, as shown in FIG. 4, the humidified gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1 so that the tips of the humidified gas tube 4 and the dry gas tube 5 are located in the end portion of the sampling bag 1. FIG. 5A shows a change in the humidity in the sampling bag 1 when the above humidification and drying are performed in the above state. As can be seen from the graph of FIG. 5 (a), in the humidification process, the humidity has increased rapidly from the beginning, and it has been confirmed that the humidification gas is filled in the sampling bag 1 simultaneously with the start of the blowing of the humidification gas. In addition, when the process proceeds to the drying process, the humidity is drastically decreased, and it is confirmed that the humidified gas in the sampling bag 1 is efficiently expelled by blowing in the dry gas.

  On the other hand, in the graph of FIG. 5B, the humidified gas tube 4 and the dry gas tube 5 are attached to the connection attachment 3 with their tips hardly protruding from the connection attachment 3, and FIGS. This shows the change in humidity in the sampling bag 1 when humidification and drying are performed so that In this case, even if humidified gas is blown in the humidifying step, the humidity in the sampling bag 1 is only slightly increased, and the humidified gas blown into the sampling bag 1 immediately does not enter the interior of the sampling bag 1. It is confirmed that it will be discharged.

  FIG. 6 shows a system of the sampling bag cleaning apparatus. Reference numeral 28 denotes a control device, in which a gas pipe, a control valve, a control unit, and the like are incorporated, and a gas cylinder or the like can be connected to the gas pipe (see FIG. 7 for the inside of the control device 28). . The humidified gas tube 4 and the dry gas tube 5 are connected to the gas pipe of the control device 28, and the cleaning performed by supplying the humidified gas to the sampling bag 1 through the humidified gas tube 4 and the dry gas tube 5 as described above. The cleaning performed by supplying the drying gas to the sampling bag 1 can be automatically controlled by the control device 28.

  In this system, a heating device 29 is used. As the heating device 29, a generally used dryer can be used as it is. Since the side wall of the dryer is usually provided with an opening for taking in the pipe, the opening can be opened and the humidified gas tube 4 and the dry gas tube 5 can be opened, and the connection attachment 3 can be arranged in the heating device 29. it can. By connecting the sampling bag 1 to the connection attachment 3 in the heating device 29, the sampling bag 1 can be cleaned with the humidified gas and the dry gas while being heated to a predetermined temperature in the heating device 29. It can be done. When the sampling bag 1 is heated in this way, the gas is easily diffused from the sampling bag 1, so that the efficiency of cleaning the sampling bag 1 can be increased.

  Here, in the embodiment of FIG. 6, the humidified gas generator 19 is arranged outside the heating device 29, but the humidified gas generator 19 is placed in the heating device 29 as shown in FIG. 7 described later. You may make it arrange | position to. When the humidified gas generator 19 is arranged in the heating device 29 in this way, the water 20 in the humidified gas generator 19 is heated to generate water vapor, and moisture in the humidified gas generated by the humidified gas generator 19 The content can be increased, a humidified gas with high humidity can be generated, and the cleaning effect of the humidified gas can be improved. Although the use of the backflow prevention container 23 is omitted in the embodiment of FIG. 6, it goes without saying that the backflow prevention container 23 may be incorporated at a position between the humidified gas generator 19 and the control device 28. Yes.

  FIG. 7 shows a system including a plurality of pairs of humidified gas tubes 4 and dry gas tubes 5 and a plurality of connection attachments 3 corresponding thereto in the sampling bag cleaning apparatus of FIG. The control device 28 includes a main pipe 31, a humidified gas pipe 32 branched from the main pipe 31, and a dry gas pipe 33 as gas pipes. The humidified gas pipe 32 and the dry gas pipe 33 are respectively provided in the control device 28. A humidified gas control valve 10 and a dry gas control valve 11 are provided. The front ends of the humidified gas pipe 32 and the dry gas pipe 33 are further branched into a plurality of branch pipes 32a and 33a. In the embodiment of FIG. 7, three branch pipes 32a of the humidified gas pipe 32 and three branch pipes 33a of the dry gas pipe 33 are provided, but the present invention is not limited to this. The main pipe 31 is connected to a gas cylinder, a blower pump, or the like outside the control device 28, and is provided with an on-off valve 34 and a pressure gauge 35. A flow valve 38 is further connected to the main pipe 31 via a control valve 36 and a resistance pipe 37.

  The control unit 28 is provided with a control unit 12 formed with switches, timers, and the like. The control unit 12 includes a start switch 41 and a stop switch 42 as switches, and a humidifying timer 39 and a drying unit as timers. A timer 40 is provided (see FIG. 6). The control unit 12 is electrically connected to the humidified gas control valve 10, the dry gas control valve 11, the on-off valve 34, the control valve 36, and the like, and the humidified gas control valve 10 and the dry gas control valve 11. Can be controlled to open and close. For example, by operating the humidifying timer 39 of the control unit 12 to set the humidifying cleaning time, the humidifying gas control valve 10 can be controlled to be closed after being opened for this set time, and the drying timer can be controlled. By operating 40 and setting the drying time, it is possible to control the drying gas control valve 11 to be closed after being opened for the set time.

  A gas tube 22 is connected to each branch pipe 32a of the humidified gas pipe 32 via a resistance pipe 37, and a dry gas tube 5 is connected to each branch pipe 33a of the dry gas pipe 33 via a resistance pipe 37. is there. As described above, the backflow prevention container 23 is provided in the middle of each gas tube 22, and the tip of the gas tube 22 is connected to the humidified gas generator 19 as described above. 19 is connected to one end of the humidified gas tube 4 as described above. The humidified gas tube 4 connected to the branch pipe 32a of the humidified gas pipe 32 via the gas tube 22 and the dry gas tube 5 connected to the branch pipe 33a of the dry gas pipe 33 are paired. The humidified gas tube 4 and the dry gas tube 5 are attached to the connection attachment 3 as shown in FIG. Since there are a plurality of pairs of humidified gas tubes 4 and dry gas tubes 5, a plurality of connection attachments 3 (three in the embodiment of FIG. 7) are provided. In the embodiment shown in FIG. 7, the humidified gas generator 19 is also set in the heating device 29 together with the connection attachment 3.

  When the sampling bag 1 is cleaned by the sampling bag cleaning device, the sampling bag 1 is connected to the connection attachment 3 in the heating device 29, and the humidified gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1. The sampling bag 1 is set so that it can be washed. And it sets so that the inside of the heating apparatus 29 may be heated by predetermined fixed temperature. The heating time by the heating device 29 is preferably set by a timer of the heating device 29 so that the heating is stopped at the same time as the cleaning of the sampling bag 1 is completed.

  Further, the humidifying timer 39 and the drying timer 40 of the control unit 12 of the controller 28 are operated to input and set the humidifying cleaning time and the drying time. In the initial state, the open / close valve 34 of the main pipe 31, the humidified gas control valve 10 of the humidified gas pipe 32, and the dry gas control valve 11 of the dry gas pipe 33 are all closed, but the start switch 41 is turned on. When the opening / closing valve 34 of the main pipe 31 is opened, the humidifying gas control valve 10 of the humidifying gas pipe 32 is opened by the command from the control unit 12 and the counting of the humidifying cleaning time is started. Thus, when the on-off valve 34 and the humidified gas control valve 10 are opened, the gas supplied from the gas cylinder, the blower pump, etc. is supplied from the main pipe 31 through the humidified gas pipe 32 to each branch pipe 32a. It passes through the gas tube 22 and the backflow prevention container 23 and is sent to the humidified gas generator 19. The gas is humidified when it dives in the water 20 of the humidified gas generator 19 to become a humidified gas, and this humidified gas is blown into the sampling bag 1 through the humidified gas tube 4. The humidified gas is blown into the sampling bag 1 for a set time, so that the inside of the sampling bag 1 can be humidified and cleaned with the humidified gas as described above.

  When the set humidifying cleaning time has elapsed, the humidifying gas control valve 10 of the humidifying gas pipe 32 is closed and the drying gas control valve 11 of the drying gas pipe 33 is opened in accordance with a command from the control unit 12, and at the same time drying time Counting starts. Thus, when the humidified gas control valve 10 is closed, the supply of the humidified gas to the sampling bag 1 is stopped, and when the dry gas control valve 11 is opened, dry gas that has not been humidified is supplied from the main pipe 31. The gas passes through the dry gas pipe 33, is supplied to each branch pipe 33 a, and is further blown into the sampling bag 1 through the dry gas tube 5. By blowing dry gas into the sampling bag 1 for a set time, the inside of the sampling bag 1 can be dried with dry gas as described above.

  When the set drying time has passed, the drying gas control valve 11 of the drying gas pipe 33 is closed by a command from the control unit 12, and the supply of the drying gas to the sampling bag 1 is stopped. In this way, a series of steps of cleaning the sampling bag 1 performed using the humidified gas and the dry gas is completed, and the supply / stop of the humidified gas to the sampling bag 1 and the supply / stop of the dry gas are automatically performed. Thus, the sampling bag 1 can be automatically cleaned without the need for troublesome operations.

  Here, there are cases where it is required to inspect the emitted gas for a plurality of samples, such as automobile interior materials, but in the embodiment of FIG. 7, a plurality of humidified gas tubes 4 and dry gas tubes 5 Since the plurality of connection attachments 3 are provided, the plurality of sampling bags 1 can be simultaneously cleaned in parallel. Therefore, a plurality of sampling bags 1 used for gas inspection of a plurality of samples can be washed at the same time to cope with such inspection.

  In the embodiment of FIG. 7 described above, the humidified gas generator 19 is disposed in the heating device 29, and the water 20 in the humidified gas generator 19 is heated at the internal temperature of the heating device 29. When the water 20 is heated, the moisture content in the humidified gas generated by the humidified gas generator 19 can be increased, and a humidified gas with high humidity can be generated. However, when the humidified gas generator 19 is heated at the same temperature as the temperature at which the sampling bag 1 is heated, the temperature of the humidified gas generated through the humidified gas generator 19 is substantially the same as the temperature of the sampling bag 1. Therefore, the humidity (relative humidity) of the humidified gas supplied into the sampling bag 1 is not so high.

  Therefore, it is preferable to provide a water heater 55 that heats the water 20 of the humidified gas generator 19 separately from the heating device 29. FIG. 8 shows an example of the water heater 55, which is formed by attaching a ring-shaped electric heater 57 to the inner periphery of the heating container 56, and the humidified gas generator 19 is formed on the inner periphery of the electric heater 57. The water 20 in the humidified gas generator 19 can be heated by the electric heater 57 by inserting and setting the lower part. By using such a water heater 55 and adjusting the heating temperature of the electric heater 57, the humidified gas generator 19 can be heated at a temperature higher than the heating temperature of the sampling bag 1 by the heating device 29. is there. And when the humidified gas generator 19 is heated at a temperature higher than the heating temperature of the sampling bag 1 in this way to generate the humidified gas, the humidified gas is supplied to the sampling bag 1 at a temperature lower than that temperature. The temperature is lowered in the sampling bag 1, and the humidity (relative humidity) of the humidified gas in the sampling bag 1 is further increased. Therefore, the sampling bag 1 can be washed with a humidified gas having a higher humidity. Heating of the humidified gas generator 19 by the water heater 55 may be performed within the heating device 29 or may be performed outside the heating device 29. Further, the water heater 55 is not limited to the one shown in FIG. 8. For example, a heater may be incorporated in the humidified gas generator 19 so as to directly heat the water 20.

  Here, when the humidified gas is generated by heating the water 20 of the humidified gas generator 19 at the same temperature as the heating temperature of the sampling bag 1, the humidified gas is heated at a temperature higher than the heating temperature of the sampling bag 1. When gas is generated, the humidity (relative humidity) in the sampling bag 1 when these humidified gases are supplied to the sampling bag 1 is measured, and the result is shown in the graph of FIG. That is, the internal temperature of the heating device 29 is set to 65 ° C., the heating temperature of the humidified gas generator 19 by the water heater 55 is first set to 65 ° C. to generate the humidified gas, and the humidified gas is sampled. The bag 1 was allowed to flow for 1 hour, then switched to dry gas, and the sampling bag 1 was allowed to flow for 1 hour, which was repeated twice. The graph of FIG. 12 shows a change in humidity (relative humidity) in the sampling bag 1, and the previous two waves are the humidity in the sampling bag 1 at this time, and the humidified gas is allowed to flow through the sampling bag 1. The humidity in between was about 45% RH.

  Next, while the internal temperature of the heating device 29 is set to 65 ° C., the heating temperature of the humidified gas generator 19 by the water heater 55 is set to 85 ° C. to generate a humidified gas. 1 was allowed to flow for 1 hour, then switched to dry gas and allowed to flow to sampling bag 1 for 1 hour, which was repeated twice. The two waves in the back of the graph of FIG. 12 are the humidity in the sampling bag 1 at this time, and the humidity during the flow of the humidified gas to the sampling bag 1 was about 80% RH. In this manner, the sampling bag 1 can be cleaned with the humidified gas having a high humidity by heating the humidified gas generator 19 at a temperature higher than the heating temperature of the sampling bag 1 to generate the humidified gas.

  In increasing the humidity of the humidified gas, in addition to heating the water in the humidified gas generator 19 as described above, a plurality of humidified gas generators 19 may be connected in series as shown in FIG. Can be done. That is, the gas sent through the gas tube 22 becomes a humidified gas containing moisture when diving through the water 20 of the humidified gas generator 19. By connecting a plurality of the humidified gas generators 19 in series, the gas is submerged in water. Will be dive a plurality of times, and a humidified gas containing a lot of moisture and having a high humidity can be generated. The number of the humidified gas generators 19 is not limited, and the humidified gas with higher humidity can be generated by using the water heater 55 together.

  Moreover, in said embodiment, the humidification gas tube 4 and the dry gas tube 5 are mounted | worn with the one connection attachment 3, and the inside of the sampling bag 1 can be wash | cleaned by connecting this connection attachment 3 to the sampling bag 1. FIG. I am doing so. Here, there are various types of sampling bags 1 having a small internal capacity to a large one, and they are selectively used according to the size of the sample to be inspected. When cleaning the sampling bag 1 having a large internal volume, it is necessary to supply the humidified gas and the dry gas from the humidified gas tube 4 and the dry gas tube 5 at a large flow rate. However, as in the above embodiment, when a pair of tube insertion holes 8a and 8b are drilled in one connection attachment 3, and the humidified gas tube 4 and the dry gas tube 5 are inserted and attached to each, It is difficult to use the humidified gas tube 4 or the dry gas tube 5 having a large diameter, and it is difficult to supply the humidified gas or the dry gas to the sampling bag 1 at a large flow rate.

  Therefore, in the embodiment of FIG. 11, one humidified gas tube 4 or dry gas tube 5 is attached to one connection attachment 3. That is, as shown in FIG. 11A, a single tube insertion hole 8 is formed in the center of the connection attachment 3. Since there is only one tube insertion hole 8 as described above, the tube insertion hole 8 can be formed with a larger diameter than when a pair of tube insertion holes 8a and 8b are formed as shown in FIG. Therefore, as shown in FIG. 11 (b), it is possible to use a humidified gas tube 4 or a dry gas tube 5 that is inserted into the tube insertion hole 8 and attached to the connection attachment 3 with a large diameter.

  As described above, in the embodiment of FIG. 11, the humidified gas tube 4 and the dry gas tube 5 are respectively attached to different connection attachments 3, but other configurations are the same as those of the above-described embodiment. Since the sampling bag 1 having a large internal capacity is usually provided with a plurality of connection ports 2 (usually two at both ends of one side), the inside of the sampling bag 1 is shown in FIG. As described above, the connection attachment 3 having the humidified gas tube 4 attached thereto is connected to one of the connection ports 2, the humidified gas tube 4 is inserted into the sampling bag 1, and the dry gas tube 5 is attached to the other connection port 2. The connection attachment 3 is connected, and the dry gas tube 5 is inserted into the sampling bag 1. At this time, the humidified gas tube 4 and the dry gas tube 5 are inserted into the sampling bag 1 so that the tips of the humidified gas tube 4 and the dry gas tube 5 are located behind the central portion of the sampling bag 1. It is desirable that the tip of the humidified gas tube 4 and the tip of the dry gas tube 5 be positioned in the corner of the end farthest from the head. Here, the humidified gas tube 4 and the dry gas tube are adjusted by sliding the humidified gas tube 4 and the dry gas tube 5 in accordance with the size of the sampling bag 1 to adjust the length of projection from the connection attachment 3. The tip of the humidified gas tube 4 or the dry gas tube 5 can be easily located in the back of the sampling bag 1 when 5 is inserted into the sampling bag 1. Of course, the tips of the humidified gas tube 4 and the dry gas tube 5 do not need to be accurately positioned at the end portion in the sampling bag 1, and may be positioned at least deeper than the center portion of the sampling bag 1.

  Then, similarly to the above, after the humidified gas is blown into the sampling bag 1 from the humidified gas tube 4, the inside of the sampling bag 1 is humidified and washed, and then the dry gas is blown into the sampling bag 1 from the dry gas tube 5, The inside of the sampling bag 1 can be washed by drying the inside of the sampling bag 1. At this time, since the humidified gas tube 4 and the dry gas tube 5 can be formed to have a large diameter, the humidified gas and the dry gas are supplied from the humidified gas tube 4 and the dry gas tube 5 into the sampling bag 1 at a large flow rate. Even if the sampling bag 1 has a large internal volume, the sampling bag 1 can be cleaned without taking a long time.

  Here, by supplying the dry gas from the dry gas tube 5 and drying the inside of the sampling bag 1 as described above, the cleaning of the sampling bag 1 is completed, but the dry gas remains in the sampling bag 1. Since it is in an inflated state, it is necessary to discharge the dry gas from the sampling bag 1. When the sampling bag 1 has a small capacity, the dry gas can be easily ejected and discharged from the connection port 2 by pressing the sampling bag 1, but when the sampling bag 1 has a large capacity, the dry gas is connected. It takes time to expel it from the mouth 2 and it becomes difficult to exhaust the dry gas completely.

  Therefore, the embodiment of FIG. 13 includes a suction device 13 that sucks and discharges the dry gas in the sampling bag 1 through the dry gas tube 5 after supplying the dry gas from the dry gas tube 5 to dry the inside of the sampling bag 1. It is what I did. The gas piping, control valve, control unit and the like in the control device 28 are substantially the same as those shown in FIG. 7, but the main pipe 31 is provided with a main plug 47, and the humidified gas pipe 32 is provided with a backflow prevention valve 45. An integrating flow meter 46 is provided in one of a plurality (three) of branch pipes 32a. The integrated flow meter 46 is for integrating and displaying the flow rate of the humidified gas supplied from the humidified gas tube 4 to the sampling bag 1. In FIG. 13, among the plurality of branch pipes 32a and 33a, only the state in which the gas tube 22 is connected to one branch pipe 32a and the dry gas tube 5 is connected to one branch pipe 32b is illustrated. Is not shown.

  An exhaust pipe 50 is branched and connected to the dry gas pipe 33 at a location between the dry gas control valve 11 and the branch pipe 33a. A suction device 13 formed by a suction pump or the like is connected to the exhaust pipe 50, and an exhaust control valve 51 is connected to the exhaust pipe 50 at a location between the branch connection portion and the suction device 13. Further, an integrated flow meter 52 for integrating the flow rate of the discharged gas is connected to the exhaust pipe 50 at a location between the suction device 13 and the exhaust control valve 51. The suction device 13 and the exhaust control valve 51 are electrically connected to the control unit 12 described above, and the control unit 12 performs on / off control or open / close control.

  In the embodiment of FIG. 13, with the open / close valve 34 of the main pipe 31 open, the humidified gas control valve 10 of the humidified gas pipe 32 is “open”, and the dry gas control of the dry gas pipe 33 is performed. When the opening / closing control is performed so that the valve 11 is “closed” and the exhaust control valve 51 of the exhaust pipe 50 is “closed”, as shown by the arrow in FIG. Is supplied to the sampling bag 1. Next, the humidified gas control valve 10 of the humidified gas pipe 32 is “closed”, the dry gas control valve 11 of the dry gas pipe 33 is “open”, and the exhaust control valve 51 of the exhaust pipe 50 is “closed”. When the open / close control is performed, the supply of the humidified gas is stopped and the dry gas is supplied from the dry gas tube 5 to the sampling bag 1 as indicated by the arrow in FIG.

  Next, the humidified gas control valve 10 of the humidified gas pipe 32 is “closed”, the dry gas control valve 11 of the dry gas pipe 33 is “closed”, and the exhaust control valve 51 of the exhaust pipe 50 is “open”. When the opening / closing control is performed so as to become “”, at the same time, the suction device 13 that has been stopped is controlled to be on so that the operation starts. Accordingly, the supply of the dry gas from the dry gas tube 5 to the sampling bag 1 is stopped, and the dry gas remaining in the sampling bag 4 is branched from the dry gas tube 5 by the suction force of the suction device 13. It is discharged as shown by an arrow in FIG. 13C through 32a, the dry gas pipe 33 and the exhaust pipe 50. Since the dry gas in the sampling bag 1 can be sucked and forcibly discharged in this way, the dry gas can be completely discharged in a short time even if the sampling bag 1 has a large capacity. Is.

  When the entire amount of the dry gas in the sampling bag 1 is discharged, the operation of the suction device 13 is stopped, but this stop is controlled in response to a signal output from the integrated flow meter 52 to the control unit 12. That is, the amount of dry gas discharged from the sampling bag 1 is measured by the integrated flow meter 52 provided in the exhaust pipe 50, but the amount of dry gas passing through the exhaust pipe 50 is measured by the integrated flow meter 52. The suction device 13 is controlled to be stopped when the integrated amount reaches the capacity of the sampling bag 1. Here, when the suction device 13 operates even after the dry gas in the sampling bag 1 is exhausted, the sampling bag 1 has a negative pressure, but the sampling bag 1 has the connection attachment 3 connected to the connection port 2. Since the outside air communicates with the outside through the exhaust port 6, the outside air does not flow into the sampling bag 1 from the exhaust port 6 through the connection port 2, and the inside of the sampling bag 1 does not become excessively negative pressure. Therefore, the sampling bag 1 does not become excessively negative pressure and the sampling bag 1 contracts and becomes wrinkled. Therefore, the accumulated amount of gas measured by the integrating flow meter 52 is the capacity of the sampling bag 1. By controlling so that the suction device 13 is stopped when the amount becomes slightly larger than that, the entire amount of the dry gas in the sampling bag 1 can be surely discharged.

  Here, the supply of the dry gas to the sampling bag 1 and the discharge of the dry gas from the sampling bag 1 are performed through the same dry gas tube 5, but if the diameter (inner diameter) of the dry gas tube 5 is thin, the suction device When the dry gas in the sampling bag 1 is sucked and discharged by operating 13, the ventilation resistance in the dry gas tube 5 is large, and the time required to discharge the dry gas becomes long. In this case, it can be considered to increase the suction force of the suction device 13, but if the suction force increases, the inside of the dry gas tube 5 becomes negative pressure, and the dry gas tube 5 may contract, There is a limit to increasing the suction force of the suction device 13. Therefore, it is desirable to use a dry gas tube 5 having a diameter larger than that of the humidified gas tube 4 so as to reduce the suction ventilation resistance.

  However, when the diameter of the dry gas tube 5 is made larger than that of the humidified gas tube 4 in this way, supply of the dry gas when supplying the dry gas to the sampling bag 1 through the dry gas tube 5 in order to dry the inside of the sampling bag 1 is performed. It becomes difficult to adjust the amount. That is, the main pipe 31 in the control device 28 is branched into two lines, a humidified gas pipe 32 and a dry gas pipe 33, and the humidified gas tube 4 is connected to the humidified gas pipe 32, and the dry gas is connected to the dry gas pipe 33. The tubes 5 are connected to each other, and the gas pumped through the main pipe 31 is dried as a humidified gas from the humidified gas pipe 32 through the humidified gas tube 4 or from the dry gas pipe 33 through the dry gas tube 5. The gas is supplied to the sampling bag 1 as a gas. The flow rate of the humidified gas supplied through the humidified gas tube 4 and the flow rate of the dry gas supplied through the dry gas tube 5 are the gas pressure and the length and diameter (inner diameter) of the humidified gas tube 4 and the dry gas tube 5. Therefore, in order to make the supply amount of the humidified gas and the supply amount of the dry gas substantially equal, the diameters of the humidified gas tube 4 and the dry gas tube 5 are usually set to the same size. However, when the dry gas tube 5 having a diameter larger than that of the humidified gas tube 4 is used as described above, the supply amount of the dry gas becomes larger than that of the humidified gas.

  Therefore, in the embodiment of FIG. 13, when using the dry gas tube 5 having a diameter larger than that of the humidified gas tube 4, a flow path resistor 53 that increases the flow path resistance is provided on the dry gas pipe 33 upstream of the dry gas tube 5. It is intended to be provided. The position where the flow path resistor 53 is provided in the dry gas pipe 33 is set at a location between the branch connection portion of the exhaust pipe 50 and the dry gas control valve 11. The flow path resistor 53 may be anything as long as the flow path resistance of the dry gas pipe 33 can be increased. For example, a pipe having a narrow inner diameter, or a pipe wound in a spiral shape to lengthen the flow path. However, it is desirable that the flow path resistance can be arbitrarily changed by adjusting the flow rate with a needle or the like, such as a speed controller.

  When the flow path resistor 53 is provided in the dry gas pipe 33 as described above, the dry gas pipe is supplied from the main pipe 31 when the dry gas is supplied to the sampling bag 1 through the dry gas tube 5 as shown in FIG. Since the flow of the gas branched and pumped to 33 is regulated when passing through the flow path resistor 53, the dry gas is supplied even if the diameter of the dry gas tube 5 is larger than that of the humidified gas tube 4. Is sent to the dry gas tube 5 at a regulated flow rate and supplied from the dry gas tube 4 to the sampling bag 1. Therefore, even if the diameter of the dry gas tube 5 is larger than that of the humidified gas tube 5, the flow rate of the dry gas supplied through the dry gas tube 5 is made equal to the flow rate of the humidified gas supplied through the humidified gas tube 4. Thus, it can be regulated by the flow path resistor 53.

  On the other hand, when the suction device 13 is operated and the dry gas is sucked and exhausted from the sampling bag 1 through the dry gas tube 5 as shown in FIG. 13C, the dry gas sucked through the dry gas tube 5 is flow path resistor 53. Before flowing into the exhaust pipe 50 and exhausted. And since the diameter of the dry gas tube 5 is formed thicker than the humidified gas tube 4, the ventilation resistance at the time of suction is low, and the dry gas in the sampling bag 1 is smoothly passed through the dry gas tube 5. Can be exhausted in a short time.

  In the above-described embodiment, the humidified gas tube 4 and the dry gas tube 5 are slidably attached to the connection attachment 3. However, when the length protruding from the connection attachment 3 does not need to be adjusted, The humidified gas tube 4 and the dry gas tube 5 may be fixed to the connection attachment 3, or the humidified gas tube 4 and the dry gas tube 5 may be provided integrally with the connection attachment 3. In the above embodiment, a dryer or the like is used as the heating device 29. However, any device that can heat the sampling bag 1 may be used. For example, an electric heater or the like is built in an openable and closable bag, A heating device 29 that can be heated by inserting the sampling bag 1 into the bag can also be used.

DESCRIPTION OF SYMBOLS 1 Sampling bag 2 Connection port 3 Connection attachment 4 Humidification gas tube 5 Drying gas tube 6 Exhaust port 7 Cylindrical connection part 8 Tube insertion hole 10 Control valve for humidification gas 11 Control valve for dry gas 12 Control part 13 Suction device 19 Humidification gas Generator 20 Water 29 Heating device 55 Water heater

Claims (10)

  A humidified gas tube for supplying a humidified gas into the sampling bag to clean the sampling bag with the humidified gas, and a dry gas tube for supplying a dry gas into the sampling bag to drive out the humidified gas and dry the sampling bag. And a connection attachment that is formed by attaching a humidified gas tube and / or a dry gas tube and is connected to a connection port provided in the sampling bag, and the connection attachment is connected to the connection port of the sampling bag. Each end of the humidified gas tube or dry gas tube protrudes from the connection attachment so that the humidified gas tube or dry gas tube is inserted into the sampling bag in the state, and the connection attachment is connected to the sampling bag connection port. Sampling bag There cleaning device of the sampling bag, characterized in that the exhaust port communicating outside through the connection port is provided on the connecting attachment.   The humidified gas tube and / or dry gas tube is mounted on the connection attachment in a state where the humidified gas tube and / or dry gas tube is slidably inserted into the tube insertion hole provided in the connection attachment. The sampling bag cleaning apparatus according to claim 1.   A humidified gas tube and a dry gas tube are attached to the connection attachment in a state where the humidified gas tube and the dry gas tube are respectively inserted into a pair of tube insertion holes provided in the connection attachment. The sampling bag cleaning apparatus according to claim 2, further comprising a single connection attachment.   A humidifying gas tube or dry gas tube is inserted into one tube insertion hole provided in the connection attachment, and a humidifying gas tube or dry gas tube is attached to the connection attachment. 3. The sampling bag cleaning apparatus according to claim 2, comprising a connection attachment fitted with a gas tube and a connection attachment fitted with a dry gas tube.   A humidifying gas on / off valve provided in a path for supplying gas to the humidifying gas tube, a drying gas on / off valve provided in a path for supplying gas to the drying gas tube, and a humidifying gas on / off valve for a set predetermined time After the opening, the humidifying gas on / off valve is closed after the predetermined time has elapsed, and the humidifying gas on / off valve is opened, and the drying gas on / off valve is closed after the set predetermined time. 5. The sampling bag cleaning apparatus according to claim 1, further comprising a control unit that controls a dry gas on-off valve.   6. The sampling bag cleaning apparatus according to claim 1, wherein the humidifying gas tube and the drying gas tube are used as a pair, and a plurality of pairs of the humidifying gas tube and the drying gas tube are provided.   7. A humidifier gas generator that generates a humidified gas by submerging gas in water, and further comprising a water heater that heats the water of the humidified gas generator. The sampling bag cleaning apparatus according to claim 1.   The heating device for heating the sampling bag is provided, and the heating temperature of the water in the humidified gas generator is set to be higher than the heating temperature of the sampling bag for cleaning through the humidified gas. Sampling bag cleaning equipment.   9. The sampling according to claim 8, further comprising a suction device that sucks and discharges the dry gas in the sampling bag through the dry gas tube after supplying the dry gas from the dry gas tube to dry the inside of the sampling bag. Bag cleaning device.   When cleaning the sampling bag using the sampling bag cleaning device according to any one of claims 1 to 9, a connection attachment is connected to the connection port of the sampling bag, and a humidified gas tube attached to the connection attachment or drying is performed. Pass the humidified gas into the sampling bag by inserting the gas tube into the sampling bag, supplying the humidified gas into the sampling bag through the humidified gas tube and exhausting the humidified gas in the sampling bag from the exhaust port of the connection attachment After the sampling bag is cleaned with the humidified gas, the dry gas is supplied into the sampling bag through the dry gas tube, and the humidified gas in the sampling bag is expelled and discharged from the exhaust port of the connection attachment. The method of cleaning the sampling bag, characterized in that drying the sample bag with dry gas.

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