Degassing device

Abstract

This degassing device is provided with: a degassing module comprising a gas-permeable tube unit that partitions between a fluid circulation space and a depressurized space; a vacuum tubing that has a suction tube section, which is connected to the degassing module and communicates with the depressurized space of the degassing module, and a discharge tube section, in which an outlet opened to the exterior is formed; a discharge device that is connected to the suction tube section and the discharge tube section, and is configured so as to send gas out from the suction tube section to the discharge tube section; a housing which has a bottom plate and a front plate erected on the bottom place, and in which the discharge device is mounted above the bottom plate and behind the front plate; and a vessel having a liquid storage space for storing liquid discharged from the outlet of the discharge tube section. The discharge tube section has an inside discharge tube section that is located behind the front plate and connected to the discharge tube section, and an outside discharge tube section which is located in front of the front plate and where the outlet is formed.

Description

Technical Field

[0001] The present invention relates to a degassing device.

Background Art

[0002] Patent Document 1 discloses a degassing device used in a liquid chromatography device or the like.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the degassing device described in Patent Document 1, a decompression space in a degassing module provided with a tube unit and a discharge device (pump) are communicated by a vacuum pipe, and the liquid flowing through the tube unit is degassed by operating the discharge device. However, when liquid leaks from the tube unit into the decompression space due to deterioration of the tube unit or the like, the liquid leaked into the decompression space is discharged into the degassing device from the discharge device through the vacuum pipe by the operation of the discharge device. As a result, there is a possibility that devices such as the discharge device mounted on the degassing device get wet and malfunction.

[0005] Therefore, an object of one aspect of the present invention is to provide a degassing device capable of suppressing wetting of devices mounted on the degassing device when liquid leaks from the tube unit into the decompression space.

Means for Solving the Problems

[0006] [1] The degassing device according to one aspect of the present invention includes a degassing module having a tube unit with gas permeability that partitions between a fluid flow space and a decompression space, a suction pipe portion connected to the degassing module and communicating with the decompression space of the degassing module, and a discharge pipe portion having an outlet opened to the outside. It has a vacuum pipe, a discharge device connected to the suction pipe portion and the discharge pipe portion and configured to send gas from the suction pipe portion to the discharge pipe portion, a housing having a bottom plate and a front plate erected on the bottom plate, and the discharge device is mounted above the bottom plate and behind the front plate. And a container having a liquid storage space for storing the liquid discharged from the outlet of the discharge pipe portion. The discharge pipe portion has an inner discharge pipe portion located behind the front plate and connected to the discharge pipe portion, and an outer discharge pipe portion located in front of the front plate and having an outlet formed therein.

[0007] In this degassing device, since the discharge device is connected to a suction pipe portion communicating with the decompression space of the degassing module and a discharge pipe portion having an outlet opened to the outside, when liquid leaks from the tube unit into the decompression space due to deterioration of the tube unit or the like, due to the operation of the discharge device, the liquid leaked into the decompression space passes through the suction pipe portion, the discharge device, and the discharge pipe portion and is discharged from the outlet of the discharge pipe portion. And in this degassing device, since it is provided with a container having a liquid storage space for storing the liquid discharged from the outlet of the discharge pipe portion, the liquid discharged from the outlet of the discharge pipe portion can be put into and stored in the liquid storage space of the container. For this reason, when liquid leaks from the tube unit into the decompression space, it is possible to prevent equipment such as the discharge device mounted on the degassing device from being wetted by this liquid. Moreover, since the outlet of the discharge pipe portion is formed in the outer discharge pipe portion located in front of the front plate, the discharge device and the outlet of the discharge pipe portion are separated by the front plate. For this reason, even if the container is tilted and liquid spills from the container, it is possible to prevent equipment such as the discharge device mounted on the degassing device from being wetted by this liquid.

[0008] [2] In the degassing device described in [1], it further includes a control unit that controls the operation and stop of the discharge device, and the housing may mount the control unit above the bottom plate and behind the front plate. In this degassing device, since the control unit is arranged behind the front plate, the control unit and the outlet of the discharge pipe portion are separated by the front plate. Therefore, even if the container is tilted and liquid spills from the container, it is possible to prevent the control unit from being wetted by this liquid.

[0009] [3] In the degassing device described in [1] or [2], at least a part of the outer discharge pipe portion and the container may have translucency that allows visual recognition from the outside to the inside. When liquid leaks from the tube unit into the decompression space due to deterioration of the tube unit or the like, it is preferable to promptly stop the drive of the discharge device. For this reason, it is conceivable to provide a sensor for detecting liquid in any one of the suction pipe portion, the discharge device, the discharge pipe portion, and the container, which is the passage of the liquid leaked from the tube unit into the decompression space. However, providing a sensor increases the cost and complicates the configuration of the degassing device. Also, if the sensor fails, the liquid cannot be detected. In this degassing device, since at least a part of the outer discharge pipe portion and the container has translucency that allows visual recognition from the outside to the inside, it becomes possible to visually check the presence or absence of liquid through at least a part of the outer discharge pipe portion and the container. Thereby, even without providing a sensor for detecting liquid in any one of the suction pipe portion, the discharge device, the discharge pipe portion, and the container, it is possible to determine whether liquid has leaked from the tube unit into the decompression space by visually observing the outer discharge pipe portion and the container in front of the front plate. Even in this case, a sensor for detecting liquid may be provided in any one of the suction pipe portion, the discharge device, the discharge pipe portion, and the container.

[0010] [4] In the degassing device described in any one of [1] to [3], the container may have translucency that allows visual inspection from the outside to the inside. In this degassing device, since the container has translucency that allows visual inspection from the outside to the inside, it becomes possible to visually check the presence or absence of liquid through the container. As a result, even if a sensor for detecting liquid is not provided in any of the suction pipe section, the discharge device, the discharge pipe section, and the container, it is possible to determine whether or not liquid is leaking from the tube unit into the decompression space by visually observing the container in front of the front plate.

[0011] [5] In the degassing device described in any one of [1] to [4], the outer discharge pipe section may have a base pipe section continuous from the inner discharge pipe section, and a translucent pipe section connected to the base pipe section to form an outlet and having translucency that allows visual inspection from the outside to the inside. In this degassing device, since the outer discharge pipe section has a base pipe section continuous from the inner discharge pipe section and a translucent pipe section connected to the base pipe section to form an outlet and having translucency that allows visual inspection from the outside to the inside, even when the inner discharge pipe section does not have translucency, it becomes possible to visually check the presence or absence of liquid through the translucent pipe section. As a result, even if a sensor for detecting liquid is not provided in any of the suction pipe section, the discharge device, the discharge pipe section, and the container, it is possible to determine whether or not liquid is leaking from the tube unit into the decompression space by visually observing the translucent pipe section in front of the front plate. Moreover, since the outer discharge pipe section is configured such that the translucent pipe section is connected to the base pipe section continuous from the inner discharge pipe section, the discharge pipe section can be easily manufactured.

[0012] [6] In the degassing device described in any one of [1] to [5], the container may have an opening that opens upward the liquid storage space, and the opening of the container may be disposed below the outlet of the discharge pipe section. In this degassing device, since the opening that opens upward the liquid storage space of the container is disposed below the outlet of the discharge pipe section, the liquid discharged from the outlet of the discharge pipe section can be easily put into the container.

[0013] [7] In the degassing device according to [6], the container may have a liquid collecting portion that widens in a funnel shape upward from the opening. In this degassing device, since the container has a liquid collecting portion that widens in a funnel shape upward from the opening, the liquid can be guided to the opening from a position away from the opening. Therefore, even when the opening of the container is narrow or the outlet of the discharge pipe portion is away from the opening, the liquid discharged from the outlet of the discharge pipe portion can be appropriately put into the container.

[0014] [8] In the degassing device according to any one of [1] to [5], the container has an opening that opens the liquid storage space to the outside, and the outer discharge pipe portion may be inserted into the liquid storage space from the opening. In this degassing device, since the outer discharge pipe portion is inserted into the liquid storage space from the opening of the container, the liquid discharged from the outlet of the discharge pipe portion can be easily put into the container.

[0015] [9] In the degassing device according to any one of [1] to [8], at least a part of the vacuum pipe may be a resin composition containing a polyolefin and a styrene-based thermoplastic elastomer. In this degassing device, since at least a part of the vacuum pipe is a resin composition containing a polyolefin and a styrene-based thermoplastic elastomer, it can be made excellent in solvent resistance, chemical resistance, and durability. In addition, the gas permeability can be lowered and the disconnection of the vacuum pipe can be suppressed. [Advantages of the Invention]

[0016] According to one aspect of the present invention, when liquid leaks from the tube unit into the decompression space, it is possible to prevent the equipment mounted on the degassing device from being immersed in the leaked liquid. [Brief Description of the Drawings]

[0017]

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[0018] Hereinafter, a degassing apparatus according to an embodiment will be described in detail with reference to the drawings. In all the drawings, the same or corresponding parts are designated by the same reference numerals, and duplicated explanations will be omitted.

[0019] Fig. 1 is a schematic plan view showing a degassing device according to one embodiment. Fig. 2 is a schematic side view of the degassing device shown in Fig. 1. Fig. 3 is a schematic front view of the degassing device shown in Fig. 1. Fig. 4 is a schematic cross-sectional view taken along line IV-IV in Fig. 3.

[0020] The degassing apparatus 1 shown in Figures 1 to 4 is, for example, a degassing apparatus for liquid chromatography, which performs a degassing process on a fluid to be inspected by liquid chromatography. The degassing apparatus 1 may also be used in gas chromatography, biochemical analyzers, inkjet filling devices, etc. As shown in Figures 1 to 4, the degassing apparatus 1 includes a housing 5 having a bottom plate 2, a front plate 3, and a rear plate 4, a front panel 6, degassing modules 10, 20, and 30, a vacuum pipe 40, an exhaust device 50, an atmosphere release pipe 60, an atmosphere release valve 70, an adjustment valve 75, a control unit 80, and a container 90.

[0021] The bottom plate 2 of the housing 5 defines the bottom of the degassing device 1. The front plate 3 of the housing 5 stands upright from the bottom plate 2 and defines the front part of the degassing device 1. The rear plate 4 of the housing 5 stands upright from the bottom plate 2 behind the front plate 3 and faces the front plate 3, and defines the rear part of the degassing device 1. In the degassing device 1, the direction in which the front plate 3 and the rear plate 4 face each other is called the front-to-rear direction FR, the direction toward the front plate 3 relative to the rear plate 4 (the direction of the front plate 3 opposite the rear plate 4) is called the front F, and the direction toward the rear plate 4 relative to the front plate 3 (the direction of the rear plate 4 opposite the front plate 3) is called the rear R. The housing 5 has an exhaust device 50, an atmosphere release pipe 60, an atmosphere release valve 70, an adjustment valve 75, and a control unit 80 mounted above the bottom plate 2 and between the front plate 3 and the rear plate 4 (rear R of the front plate 3).

[0022] The front panel 6 is attached to the front plate 3 and forms the front surface of the degassing device 1. The front panel 6 has a front panel main body 8 that forms a storage space 7 that is open to the front F, and a front panel cover (not shown) that is detachably attached to the front panel main body 8 and closes the storage space 7.

[0023] The degassing modules 10, 20, and 30 have a configuration, for example, as shown in FIG. 5. FIG. 5 is a schematic cross-sectional view showing an example of a degassing module mounted in the degassing apparatus shown in FIG. 1. FIG. 6 is an enlarged cross-sectional view showing an enlarged portion of the connector section of the degassing module shown in FIG. 5. FIG. 5 shows the configuration of the degassing module 10 as an example, but the other degassing modules 20 and 30 have a similar configuration. As shown in FIGS. 5 and 6, the degassing module 10 includes a tube unit 12 in which a plurality of tubes 11 defining a fluid flow space S1 therein are bundled at both ends, a housing 13 that accommodates the tube unit 12, a lid 14 that airtightly seals an opening 13a of the housing 13, connectors 15 and 16 that connect and fix the tube unit 12 that penetrates the lid 14, and an exhaust nozzle 17 and an open nozzle 18 that protrude from the housing 13. The discharge nozzle portion 17 is formed with a discharge port 17a communicating with the reduced pressure space S2, and the open nozzle portion 18 is formed with an open port 18a communicating with the reduced pressure space S2.

[0024] In the degassing module 10, the inside of the housing 13 is divided by the tube units 12, which are gas-permeable membranes, into a fluid flow space S1, which is the internal space of each of the tubes 11 of the tube units 12, and a reduced pressure space S2, which is the space outside the tube units 12. The fluid flow space S1 is an area to which liquid is supplied, and liquid introduced from the inlet 12a of the tube unit 12 is supplied to the outlet 12b. The reduced pressure space S2 is an area to which internal gas is sucked. In the degassing module 10, liquid is supplied to the fluid flow space S1, which is the internal space of each of the multiple tubes 11, and air is sucked from the reduced pressure space S2 outside the multiple tubes 11, thereby degassing the liquid supplied to the tube units 12.

[0025] Each tube 11 that constitutes the tube unit 12 is a tube-shaped membrane (gas permeable membrane) that permeates gas but does not permeate liquid (see Fig. 6). The material, membrane shape, membrane form, etc. of the tube 11 are not particularly limited. Examples of the material of the tube 11 include fluororesins such as polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-ethylene copolymer (ethylene copolymer resin) (ETFE), polychlorotrifluoroethylene (PCTFE), amorphous fluoropolymer (amorphous fluororesin; AF), polyvinylidene fluoride (PVDF), polypropylene (PP), polymethylpentene (PMP), silicon, polyimide, and polyamide. Examples of the amorphous fluoropolymer include Teflon (registered trademark) AF.

[0026] Three such degassing modules 10, 20, and 30 are arranged in the degassing device 1, but one degassing module may be arranged, two degassing modules may be arranged, or four or more degassing modules may be arranged.

[0027] As shown in Figs. 1 to 4, the vacuum pipe 40 is a member for discharging the gas in each decompression space S2 to the outside. The vacuum pipe 40 includes a suction pipe portion 41 and a discharge pipe portion 42.

[0028] The suction pipe portion 41 is connected to the degassing modules 10, 20, and 30 and communicates with each decompression space S2 of the degassing modules 10, 20, and 30. The suction pipe portion 41 has discharge pipe portions 43 to 45 that are continuous with each discharge nozzle portion 17 of the degassing modules 10, 20, and 30, a discharge collecting portion 46 that collects the discharge pipe portions 43 to 45, a pipe portion 47 that connects the discharge collecting portion 46 to the discharge device 50, and a detection pipe portion 48 that communicates the discharge collecting portion 46 with the detector 85. The detector 85 is a barometric pressure sensor that detects the degree of decompression in each decompression space S2 of the degassing modules 10, 20, and 30 and is provided in the control unit 80, as will be described later.

[0029] The discharge pipe portion 42 is connected to the discharge device 50 and has an outlet 42a opened to the outside in order to discharge the gas sent out from the discharge device 50 to the outside of the degassing device 1. The end portion of the discharge pipe portion 42 opposite to the discharge device 50 penetrates the front plate 3 and extends to the front F of the front plate 3. The discharge pipe portion 42 has an inner discharge pipe portion 421 located at the rear R of the front plate 3 and an outer discharge pipe portion 422 located at the front F of the front plate 3. The tip portion of the inner discharge pipe portion 421 opposite to the outer discharge pipe portion 422 is connected to the discharge device 50. The outer discharge pipe portion 422 is accommodated in the accommodation space 7 of the front panel 6. An outlet 42a is formed at the tip of the outer discharge pipe portion 422 opposite to the inner discharge pipe portion 421, and the outer discharge pipe portion 422 is bent so that the outlet 42a faces downward.

[0030] At least a part of the suction pipe portion 41 (discharge pipe portions 43 to 45, discharge collecting portion 46, pipe portion 47, and detection pipe portion 48) and the discharge pipe portion 42 constituting the vacuum pipe 40 is made of, for example, a resin-based tube. All or substantially all (for example, excluding the connecting portions) of the components of the vacuum pipe 40 may be made of a resin-based tube. That is, a plurality of tubes may be connected using connecting members or the like to form the vacuum pipe 40. Such a tube is resistant to the use solvent of liquid chromatography. For example, its rubber hardness is preferably in the range of 70 ± 30 degrees, and its oxygen permeability is 6000 cc(STP)cm / cm 2 / sec / cmHg×10 -10It is composed of the following pipes. The rubber hardness is preferably in the range of 70 ± 30 degrees. However, from the perspective of achieving both appropriate flexibility to prevent loosening and detachment at the connection part and appropriate durability to suppress deformation, crushing, and blockage of the tube, its lower limit value is more preferably 50 degrees or more, even more preferably 55 degrees or more, particularly preferably 60 degrees or more, and the upper limit value is more preferably 95 degrees or less, even more preferably 80 degrees or less, and particularly preferably in the range of 75 degrees or less. Here, the rubber hardness represents Shore A and can be measured with a durometer (type A) by a method compliant with JIS K7312 (1996), for example. Also, the oxygen permeability is preferably 6000 cc(STP) cm / cm 2 / sec / cmHg×10 -10 or less from the perspective of excellent durability, more preferably 3000 cc(STP) cm / cm 2 / sec / cmHg×10 -10 or less, even more preferably 1000 cc(STP) cm / cm 2 / sec / cmHg×10 -10 or less, particularly preferably 500 cc(STP) cm / cm 2 / sec / cmHg×10 -10 or less, and may preferably be 0.1 cc(STP) cm / cm 2 / sec / cmHg×10 -10 or more, more preferably 10 cc(STP) cm / cm 2 / sec / cmHg×10 -10 or more. Here, the oxygen permeability means the oxygen transmission rate and can be measured by a method compliant with ASTM D 1434 pressure method, for example.

[0031] The material of the tube constituting the vacuum pipe 40 is not particularly limited as long as it has the above-mentioned properties, but examples thereof include vinyl chloride, silicone rubber; polyamides (nylons) such as nylon 6, nylon 66, nylon 11, and nylon 12; polyurethane; polyolefins such as polyethylenes such as low-density polyethylene and linear low-density polyethylene, and polypropylene; fluororesins such as FEP, PFA, ETFE, and PTFE; and thermoplastic elastomers such as polyester-based thermoplastic elastomers, styrene-based thermoplastic elastomers, and olefin-based thermoplastic elastomers, and one or more of these can be used. Of the above-mentioned materials, resin compositions containing polyolefins and thermoplastic elastomers are more preferred as the material of the tube constituting the vacuum pipe 40, and resin compositions containing polyolefins and styrene-based thermoplastic elastomers are even more preferred.

[0032] The vacuum pipe 40 is made of a resin composition containing the above-mentioned polyolefin and thermoplastic elastomer, which not only provides excellent solvent resistance but also reduces gas permeability. Furthermore, the vacuum pipe 40 is made of a resin composition containing the above-mentioned polyolefin and thermoplastic elastomer, which provides appropriate flexibility and prevents loosening or disconnection at the connection portion of the exhaust manifold 46 during degassing operations, while also suppressing deformation, crushing, and clogging of the tube, resulting in excellent durability. Furthermore, the degassing device 1 according to this embodiment includes multiple degassing modules and various connection structures, such as the connection portions between the vacuum pipe 40 and the degassing modules 10, 20, and 30 and the connection portions between the vacuum pipe 40 and other portions of the exhaust manifold 46. The construction of these flexible and durable tubes also improves the long-term reliability of the degassing device.

[0033] The styrenic thermoplastic elastomer used for the vacuum pipe 40 is a copolymer having at least one styrene block (hard segment) and at least one elastomer block. As the elastomer block, vinyl-polydiene, polyisoprene, polybutadiene, polyethylene, polychloroprene, poly-2,3-dimethylbutadiene, etc. can preferably be used. As the elastomer block, a hydrogenated one can also be used. When the elastomer block is hydrogenated, the solvent resistance (solvent resistance) and chemical resistance tend to be better, which is preferable. Specific examples of the styrenic thermoplastic elastomer include styrene-vinyl isoprene-styrene triblock copolymer (SIS), styrene-isobutylene diblock copolymer (SIB), styrene-butadiene-styrene triblock copolymer (SBS), styrene-ethylene·butene-styrene triblock copolymer (SEBS), styrene-ethylene·propylene-styrene triblock copolymer (SEPS), styrene-ethylene·ethylene·propylene-styrene triblock copolymer (SEEPS), styrene-butadiene·butylene-styrene triblock copolymer (SBBS), etc. The styrenic thermoplastic elastomer may be used alone or in combination of two or more. Among them, since the solvent resistance (solvent resistance) and chemical resistance are more excellent, it is preferable to use a styrene-vinyl isoprene-styrene triblock copolymer. Suitable examples of such a styrene-vinyl isoprene-styrene triblock copolymer include "FG1901 G Polymer" and "FG1924 G Polymer" manufactured by Kraton Corporation, and Hybrar 5127 manufactured by Kuraray Co., Ltd. In addition, Hybrar 7311 manufactured by Kuraray Co., Ltd., in which the vinyl isoprene block is hydrogenated, can also be preferably used.

[0034] The range of the content ratio of the styrene block (styrene content) in the styrene-based thermoplastic elastomer is such that the lower limit value is preferably 1% by mass, more preferably 5% by mass, and even more preferably 10% by mass with respect to the total of the styrene block and the elastomer block. In this range, there is a tendency to obtain better solvent resistance (solvent resistance) and chemical resistance performance. On the other hand, the upper limit value is preferably 30% by mass, more preferably 20% by mass with respect to the total of the styrene block and the elastomer block. In this range, there is a tendency for the solvent resistance (solvent resistance) and chemical resistance performance to be more excellent.

[0035] The range of the content of the styrene-based thermoplastic elastomer in the resin composition containing the polyolefin and the styrene-based thermoplastic elastomer is such that the lower limit value is preferably 3% by mass, more preferably 5% by mass, and even more preferably 10% by mass with respect to the total of the polyolefin and the styrene-based thermoplastic elastomer. In this range, there is a tendency to obtain good solvent resistance (solvent resistance) and chemical resistance performance. On the other hand, the upper limit value is preferably 30% by mass, more preferably 25% by mass, and even more preferably 20% by mass with respect to the total of the polyolefin and the styrene-based thermoplastic elastomer. In this range, there is a tendency to obtain good solvent resistance (solvent resistance) and chemical resistance performance.

[0036] In addition, in the discharge collecting portion 46, the connecting portion connecting the respective tubes may be composed of a hard plastic (polypropylene) or the like.

[0037] The discharge device 50 is connected to the suction pipe portion 41 and the discharge pipe portion 42 of the vacuum pipe 40, and is configured to send gas from the suction pipe portion 41 to the discharge pipe portion 42. The discharge device 50 communicates with each decompression space S2 of the degassing modules 10, 20, and 30 via the suction pipe portion 41, and discharges the gas in each decompression space S2 to the outside from the outlet 42a of the discharge pipe portion 42 based on a control instruction from the control unit 80. The discharge device 50 includes, for example, a pump 51, a fixing plate 52 to which the pump 51 is fixed, and the like. The pump 51 is fixed to the upper surface 52a of the fixing plate 52 (the surface opposite to the bottom plate 2). Therefore, the lower surface 52b of the fixing plate 52 (the surface on the bottom plate 2 side) is the lowermost surface of the discharge device 50 (the surface closest to the bottom plate 2). The pump 51 includes a motor 53 for discharging the gas in each decompression space S2 to the outside, an intake port 54 to which the pipe portion 47 of the suction pipe portion 41 is connected for sucking the gas in each decompression space S2, and an exhaust port 55 to which the discharge pipe portion 42 is connected for discharging the sucked gas to the outside of the degassing device 1. Then, based on a control instruction from the control unit 80, the motor 53 of the pump 51 is rotationally driven, so that the gas in each decompression space S2 is sent from the pipe portion 47 to the discharge pipe portion 42 and discharged to the outside from the outlet 42a of the discharge pipe portion 42. As the pump 51, for example, a diaphragm pump such as a diaphragm type dry vacuum pump is used. The diaphragm pump is a vacuum pump that moves the diaphragm up and down by rotationally driving a motor, and moves the gas from the intake port to the exhaust port by the up and down movement of the diaphragm. As the fixing plate 52, for example, a rectangular metal plate or the like is used.

[0038] As shown in FIGS. 1 and 2, the discharge device 50 is supported by the bottom plate 2 of the housing 5 via four vibration damping members 101. Since the four vibration damping members 101 have the same configuration, they will be described together as the vibration damping member 101 except when specifically described separately. The vibration damping member 101 is a member for damping vibration and suppressing the transmission of vibration. The vibration damping member 101 is interposed between the bottom plate 2 and the discharge device 50 (fixed plate 52) to support the discharge device 50 with respect to the bottom plate 2. The four vibration damping members 101 are arranged at the four corners of the fixed plate 52 in a plan view to support the discharge device 50 (fixed plate 52) at the four corners of the fixed plate 52. The discharge device 50 is arranged at a predetermined height from the upper surface 2a (the surface on the discharge device 50 side) of the bottom plate 2 by the vibration damping members 101.

[0039] The vibration damping member 101 has, for example, the configuration shown in FIG. 7. FIG. 7 is an enlarged cross-sectional view showing an enlargement of the vicinity of the vibration damping member of the degassing device shown in FIG. 1. As shown in FIG. 7, the vibration damping member 101 is interposed between the bottom plate 2 and the fixed plate 52 to support the fixed plate 52 with respect to the bottom plate 2. The vibration damping member 101 has a neck portion 101a inserted into the through hole 52c of the fixed plate 52, an upper enlarged diameter portion 101b extending from the neck portion 101a to the upper surface 52a side of the fixed plate 52 and having an enlarged diameter, a lower enlarged diameter portion 101c extending from the neck portion 101a to the lower surface 52b side of the fixed plate 52 and having an enlarged diameter, and a through hole 101d penetrating the neck portion 101a, the upper enlarged diameter portion 101b, and the lower enlarged diameter portion 101c. The upper enlarged diameter portion 101b and the lower enlarged diameter portion 101c have a larger diameter than the hole diameter of the through hole 52c of the fixed plate 52 so as not to pass through the through hole 52c of the fixed plate 52. Then, a screw 102 is inserted into the through hole 101d of the vibration damping member 101 from the upper surface 52a side of the fixed plate 52 and screwed into the screw hole 2c of the bottom plate 2. As a result, the upper enlarged diameter portion 101b and the lower enlarged diameter portion 101c sandwich the fixed plate 52 from the upper surface 52a side and the lower surface 52b side, and the lower enlarged diameter portion 101c is pressed against the bottom plate 2, so that the discharge device 50 is supported by the bottom plate 2 via the vibration damping member 101. Note that the lower enlarged diameter portion 101c serves as a spacer between the fixed plate 52 and the bottom plate 2 so that the fixed plate 52 is arranged at a predetermined height from the bottom plate 2.

[0040] As shown in FIGS. 1 and 2 , the atmosphere release pipe 60 is connected to each of the reduced pressure spaces S2 of the degassing modules 10, 20, and 30 and serves to connect each of the reduced pressure spaces S2 to the atmosphere release valve 70. The atmosphere release pipe 60 includes open pipe sections 61, 62, and 63 connected to the open ports 18a of the degassing modules 10, 20, and 30, an open collection section 64 that collects the open pipe sections 61, 62, and 63, and a pipe 65 that connects the open collection section 64 to the atmosphere release valve 70. An end 66 of the open collection section 64 of the atmosphere release pipe 60 opposite the pipe 65 is closed. The atmosphere release pipe 60 is made of the same material as the vacuum pipe 40, for example, a resin-based tube. More specifically, at least a portion of the open pipe sections 61, 62, and 63, the open collection section 64, and the pipe 65 that constitute the atmosphere release pipe 60 are made of, for example, the above-described resin-based tube. All or almost all of the components of the atmospheric release pipe 60 (except for the connecting portions, for example) may be made of resin-based tubes. In other words, the atmospheric release pipe 60 may be made by connecting a plurality of resin tubes using connecting members or the like. Such resin tubes are resistant to the solvents used in liquid chromatography, have a rubber hardness in the range of 70±30 degrees, and have an oxygen permeability of 6000 cc(STP)cm / cm. 2 / sec / cmHg×10 -10 It is configured with the following piping: The connecting portion of the open collecting portion 64 may be made of hard plastic (for example, polypropylene) or the like, similar to the connecting portion of the discharge collecting portion 46.

[0041] The atmosphere release valve 70 is a solenoid valve that is connected to one end of the atmosphere release pipe 60 and can introduce atmosphere into each reduced pressure space S2 of the degassing modules 10, 20, and 30 in one go via the atmosphere release pipe 60 based on a control instruction from the control unit 80. For example, when the degassing process in the degassing modules 10, 20, and 30 is completed, the atmosphere release valve 70 opens the solenoid valve from a closed state (CLOSE) to an open state (OPEN) within 5 seconds based on a control instruction from the control unit 80, and releases each reduced pressure space S2 (for example, a 1 L container) to the atmosphere within 1 minute.

[0042] The regulating valve 75 is a solenoid valve disposed between the degassing modules 10, 20, 30 and the discharge device 50 for adjusting the degree of decompression in the decompression space S2. When the discharge device 50 is performing the decompression process on the decompression space S2, the regulating valve 75 opens the valve. On the other hand, when the degree of decompression in the decompression space S2 falls within a predetermined range, the valve is closed based on a control instruction from the control unit 80. At this time, the discharge device 50 can stop its discharge operation. Thereafter, when the degree of decompression in the decompression space S2 falls outside the predetermined range, the valve is opened based on a control instruction from the control unit 80. Both the atmosphere release valve 70 and the regulating valve 75 are raised by a plurality of legs 71 and a plurality of legs 76 to a predetermined height from the bottom plate 2 of the housing 5.

[0043] The control unit 80 controls the operation and stop of the pump 51 of the discharge device 50. The control unit 80 also has a detector 85 for detecting the degree of decompression in the decompression space S2, and based on the detected degree of decompression, controls the operations of the discharge device 50 and the regulating valve 75. In this control, the discharge device 50 discharges the atmosphere so that the degree of decompression detected by the detector 85 reaches a predetermined value, and when the degree of decompression in the decompression space S2 falls within a predetermined range, the regulating valve 75 is closed and the operation of the discharge device 50 is stopped. When the degree of decompression detected by the detector 85 falls outside the predetermined range after the regulating valve 75 is closed, the control unit 80 moves the discharge device 50 again to perform the discharge process.

[0044] On the other hand, when the degassing process is completed by the degassing modules 10, 20, 30, the control unit 80 controls the operations of the discharge device 50 and the atmosphere release valve 70 based on a stop instruction from the outside or the like. In this control, after the degassing process is completed, the atmosphere release valve 70 is opened to rapidly release each decompression space S2 to the atmosphere. After the degassing process is completed, the control may be such that while the gas discharge operation by the discharge device 50 is continued for a predetermined time (e.g., several seconds), the atmosphere release valve 70 is opened to rapidly release each decompression space S2 to the atmosphere.

[0045] As shown in FIGS. 1 to 4, the container 90 is a container for storing a liquid, and is stored in the accommodation space 7 of the front panel 6 located in front F of the front plate 3. When the liquid leaks from the tube unit 12 into the decompression space S2 due to deterioration of the tube unit 12 or the like, the liquid that has leaked into the decompression space S2 is discharged from the outlet 42a of the discharge pipe portion 42 through the suction pipe portion 41, the discharge device 50, and the discharge pipe portion 42 by the operation of the discharge device 50. Therefore, the container 90 receives and stores inside the liquid that has leaked from the tube unit 12 into the decompression space S2 and is discharged from the outlet 42a of the discharge pipe portion 42. For this reason, the container 90 has a liquid storage space 91 capable of storing a liquid and an opening 92 that opens the liquid storage space 91 to the outside. The opening 92 is located above the liquid storage space 91 and opens the liquid storage space 91 upward. And the container 90 is positioned in the accommodation space 7 so that the opening 92 is disposed below the outlet 42a of the discharge pipe portion 42. Note that a recess or a protrusion for positioning the container 90 may be formed in the front panel main body 8 of the front panel 6.

[0046] Incidentally, when the liquid leaks from the tube unit 12 into the decompression space S2 due to deterioration of the tube unit 12 or the like, it is preferable to promptly stop the operation of the discharge device 50. For this reason, it is conceivable to provide a sensor for detecting the liquid in any one of the suction pipe portion 41, the discharge device 50, the discharge pipe portion 42, and the container 90, which is the passage of the liquid that has leaked from the tube unit 12 into the decompression space S2. However, providing a sensor increases the cost and complicates the configuration of the degassing device 1. In addition, if the sensor fails, the liquid cannot be detected. Therefore, at least a part of the outer discharge pipe portion 422 and the container 90 has translucency that allows visual recognition of the presence or absence of the liquid from the outside in front F of the front plate 3. In the present embodiment, the container 90 has translucency that allows visual recognition from the outside to the inside.

[0047] In this embodiment, having light translucency means that the transmittance of visible light, more specifically, light with a wavelength of 400 to 700 nm, is preferably 60% or more, more preferably 75% or more. On the other hand, in this embodiment, not having light translucency means that the transmittance of visible light, more specifically, light with a wavelength of 400 to 700 nm, is not within these ranges. Therefore, the transmittance of the light-transmitting portion (container 90 in this embodiment) for visible light, more specifically, light with a wavelength of 400 to 700 nm, is, for example, 60% or more, 75% or more, or 90% or more. While no upper limit is set, from the viewpoint of ease of production, the transmittance of the light-transmitting portion for visible light, more specifically, light with a wavelength of 400 to 700 nm, can be, for example, preferably 99% or less, more preferably 95% or less. From the viewpoint of making the liquid easily visible from the outside and facilitating manufacturing, for example, the transmittance of the translucent portion to visible light, more specifically, light with a wavelength of 400 to 700 nm, can be, for example, 60% to 99%, 75% to 99%, or 75% to 95%.

[0048] As described above, in the degassing apparatus 1 according to this embodiment, the suction tube section 41, which is in communication with each of the decompression spaces S2 of the degassing modules 10, 20, and 30, and the discharge tube section 42, which has an outlet 42a open to the outside, are connected to the discharge device 50. Therefore, if liquid leaks from the tube unit 12 into the decompression space S2 due to deterioration of the tube unit 12 or the like, the discharge device 50 operates to discharge the leaked liquid into the decompression space S2 through the suction tube section 41, the discharge device 50, and the discharge tube section 42, and from the outlet 42a of the discharge tube section 42. The degassing apparatus 1 further includes a container 90 having a liquid storage space 91 for storing the liquid discharged from the outlet 42a of the discharge tube section 42. Therefore, when liquid leaks from the tube unit 12 into the decompression space S2, devices mounted on the degassing apparatus 1, such as the discharge device 50, can be prevented from getting wet with the liquid. Moreover, because the outlet 42a of the discharge pipe section 42 is formed in the outer discharge pipe section 422 located in front F of the front plate 3, the discharge device 50 and the outlet 42a of the discharge pipe section 42 are separated by the front plate. Therefore, even if liquid spills from the container 90 due to, for example, tipping over the container 90, it is possible to prevent devices such as the discharge device 50 mounted on the degassing apparatus 1 from getting wet with the liquid.

[0049] Furthermore, in this degassing device 1, the control unit 80 is disposed behind R of the front plate 3, and therefore the control unit 80 and the outlet 42a of the discharge pipe unit 42 are separated by the front plate 3. Therefore, even if the container 90 is knocked over and liquid spills from the container 90, the control unit 80 can be prevented from getting wet with the liquid.

[0050] In addition, in this degassing device 1, at least a part of the outer discharge pipe portion 422 and the container 90 has translucency that allows visual recognition from the outside to the inside, so that it is possible to visually check for the presence or absence of liquid through at least a part of the outer discharge pipe portion 422 and the container 90. As a result, even if a sensor for detecting liquid is not provided in any of the suction pipe portion 41, the discharge device 50, the discharge pipe portion 42, and the container 90, by visually observing the outer discharge pipe portion 422 and the container 90 in front of the front plate 3, it is possible to determine whether or not liquid is leaking from the tube unit 12 into the decompression space S2. Even in this case, a sensor for detecting liquid may be provided in any of the suction pipe portion 41, the discharge device 50, the discharge pipe portion 42, and the container 90.

[0051] In addition, in this degassing device 1, the container 90 has translucency that allows visual recognition from the outside to the inside, so that it is possible to visually check for the presence or absence of liquid through the container 90. As a result, even if a sensor for detecting liquid is not provided in any of the suction pipe portion 41, the discharge device 50, the discharge pipe portion 42, and the container 90, by visually observing the container 90 in front of the front plate 3, it is possible to determine whether or not liquid is leaking from the tube unit 12 into the decompression space S2.

[0052] In addition, in this degassing device 1, an opening 92 that opens the liquid storage space 91 of the container 90 upward is disposed below the outlet 42a of the discharge pipe portion 42, so that the liquid discharged from the outlet 42a of the discharge pipe portion 42 can be easily put into the container 90.

[0053] In addition, in this degassing device 1, at least a part of the vacuum pipe 40 is a resin composition containing polyolefin and styrene-based thermoplastic elastomer, so that it can be made excellent in solvent resistance, chemical resistance, and durability. In addition, gas permeability can be lowered, and the disconnection of the vacuum pipe 40 can be suppressed.

[0054] As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above embodiments, and can be appropriately changed or modified within the scope of the gist of the present invention.

[0055] For example, like the degassing device 1A shown in FIG. 8, the outer discharge pipe portion may be composed of a plurality of members. FIG. 8 is a schematic cross-sectional view corresponding to FIG. 4 of a degassing device of another example. In the degassing device 1A shown in FIG. 8, the outer discharge pipe portion 422A of the discharge pipe portion 42A has a base pipe portion 422A1 and a light-transmitting pipe portion 422A2. The base pipe portion 422A1 is integrally formed with the inner discharge pipe portion 421A and is continuous from the inner discharge pipe portion 421A. Therefore, the base pipe portion 422A1 is formed of the same material as the inner discharge pipe portion 421A. The light-transmitting pipe portion 422A2 is connected to the base pipe portion 422A1 and forms the outlet 42a of the discharge pipe portion 42A. Further, the light-transmitting pipe portion 422A2 has light-transmitting properties that allow visual recognition from the outside to the inside. In the degassing device 1A, since the light-transmitting pipe portion 422A2 has light-transmitting properties, the container 90 may or may not have light-transmitting properties.

[0056] As a connection form between the base pipe portion 422A1 and the light-transmitting pipe portion 422A2, for example, there are a form of directly connecting the base pipe portion 422A1 and the light-transmitting pipe portion 422A2, and a form of indirectly connecting the base pipe portion 422A1 and the light-transmitting pipe portion 422A2 via another member. As a form of directly connecting the base pipe portion 422A1 and the light-transmitting pipe portion 422A2, for example, there are a form of press-fitting the base pipe portion 422A1 into the light-transmitting pipe portion 422A2, a form of press-fitting the light-transmitting pipe portion 422A2 into the base pipe portion 422A1, and a form of adhering the base pipe portion 422A1 and the light-transmitting pipe portion 422A2. As a form of indirectly connecting the base pipe portion 422A1 and the light-transmitting pipe portion 422A2 via another member, for example, there are a form of press-fitting both ends of an intermediate connecting pipe portion (not shown) into the base pipe portion 422A1 and the light-transmitting pipe portion 422A2, and a form of adhering both ends of an intermediate connecting pipe portion (not shown) to the base pipe portion 422A1 and the light-transmitting pipe portion 422A2.

[0057] In this degassing device 1A, the outer discharge pipe portion 422A has a base pipe portion 422A1 continuous with the inner discharge pipe portion 421A, and a translucent pipe portion 422A2 connected to the base pipe portion 422A1 and forming an outlet 42a and having translucency that allows visual inspection from the outside to the inside. Thus, even when the inner discharge pipe portion 421A does not have translucency, it is possible to visually check for the presence or absence of liquid through the translucent pipe portion 422A2. Thereby, even without providing a sensor for detecting liquid in any of the suction pipe portion 41, the discharge device 50, the discharge pipe portion 42A, and the container 90, it is possible to determine whether or not liquid is leaking from the tube unit 12 into the decompression space S2 by visually observing the translucent pipe portion 422A2 in front F of the front plate 3. Moreover, since the outer discharge pipe portion 422A is configured such that the translucent pipe portion 422A2 is connected to the base pipe portion 422A1 continuous with the inner discharge pipe portion 421A, the discharge pipe portion 42A can be easily manufactured.

[0058] Also, for example, like the degassing device 1B shown in FIG. 9, the container may have a non-translucent portion that does not have translucency and a translucent portion that has translucency. FIG. 9 is a schematic cross-sectional view corresponding to FIG. 4 of a degassing device of another example. In the degassing device 1B shown in FIG. 9, the container 90B has a non-translucent portion 90B1 that does not have translucency and a translucent portion 90B2 that has translucency and allows visual inspection from the outside to the inside. Also in this degassing device 1B, even when the outer discharge pipe portion 422 and the non-translucent portion 90B1 of the container 90B do not have translucency, it is possible to visually check for the presence or absence of liquid through the translucent portion 90B2 of the container 90B. Thereby, even without providing a sensor for detecting liquid in any of the suction pipe portion 41, the discharge device 50, the discharge pipe portion 42, and the container 90B, it is possible to determine whether or not liquid is leaking from the tube unit 12 into the decompression space S2 by visually observing the translucent portion 90B2 in front F of the front plate 3.

[0059] Also, for example, like the degassing device 1C shown in FIG. 10 and the degassing device 1D shown in FIG. 11, the container may have a liquid collecting portion that widens in a funnel shape upward from an opening that opens upward the liquid storage space.

[0060] FIG. 10 is a schematic cross-sectional view corresponding to FIG. 4 of a degassing device of another example. In the degassing device 1C shown in FIG. 10, the upper part of the liquid storage space 91C of the container 90C is narrowed, and the opening 92C that opens the liquid storage space 91C upward is narrowed. And the container 90C has a liquid collecting part 93C that expands in a funnel shape upward from this opening 92C.

[0061] In this degassing device 1C, although the opening 92C of the container 90C is narrowed, since the container 90C has the liquid collecting part 93C that expands in a funnel shape upward from the opening 92C, the liquid can be guided to the opening 92C from a position away from the opening 92C. For this reason, even when the opening 92C of the container 90C is narrow and the outlet 42a of the discharge pipe part 42 is away from the opening 92C, the liquid discharged from the outlet 42a of the discharge pipe part 42 can be appropriately put into the container 90C. Further, since the upper part of the liquid storage space 91C is narrowed and the opening 92C is narrowed, it is possible to suppress the liquid that has entered the liquid storage space 91C from splashing and scattering outside the liquid storage space 91C, and it is also possible to suppress the liquid from leaking out of the liquid storage space 91C even when the container 90C is tilted or the like.

[0062] FIG. 11 is a schematic cross-sectional view corresponding to the line XI-XI shown in FIG. 2 of a degassing device of another example. In the degassing device 1D shown in FIG. 11, the container 90D extends from below the outlet 42a of the discharge pipe part 42 to below each of the connector parts 15 and 16 of the degassing modules 10, 20, 30. Further, the upper part of the liquid storage space 91D of the container 90D is narrowed, and the opening 92D that opens the liquid storage space 91D upward is narrowed. And the container 90D has a liquid collecting part 93D that expands in a funnel shape upward from this opening 92D. The opening 92D is located below the outlet 42a of the discharge pipe part 42, and the liquid collecting part 93D extends from below the outlet 42a of the discharge pipe part 42 to below each of the connector parts 15 and 16 of the degassing modules 10, 20, 30.

[0063] In this degassing device 1D, the container 90D extends from below the outlet 42a of the discharge pipe portion 42 to below each connector portion 15 and connector portion 16 of the degassing modules 10, 20, 30. Thus, when liquid leaks from each connector portion 15 and connector portion 16 of the degassing modules 10, 20, 30 into the accommodation space 7, the liquid that has leaked into this accommodation space 7 can also be put into and accommodated by the container 90D. Also, although the opening 92D of the container 90D is narrow, since the container 90D has a liquid collecting portion 93D that expands in a funnel shape upward from the opening 92D, it is possible to guide the liquid discharged from the outlet 42a of the discharge pipe portion 42 and the liquid that has leaked from each connector portion 15 and connector portion 16 of the degassing modules 10, 20, 30 to the opening 92D even from a position away from the opening 92D. For this reason, even when the opening 92D of the container 90D is narrow or when the outlet 42a of the discharge pipe portion 42 is separated from the opening 92D, the liquid discharged from the outlet 42a of the discharge pipe portion 42 and the liquid that has leaked from each connector portion 15 and connector portion 16 of the degassing modules 10, 20, 30 can be appropriately put into the container 90D. Further, since the upper part of the liquid accommodation space 91D is narrowed and the opening 92D is narrow, it is possible to suppress the liquid that has entered the liquid accommodation space 91D from splashing and scattering outside the liquid accommodation space 91D, and it is also possible to suppress the liquid from leaking out of the liquid accommodation space 91D even when the container 90D is tilted or the like.

[0064] Also, for example, like the degassing device 1E shown in FIG. 12 and the degassing device 1F shown in FIG. 13, the outer discharge pipe portion may be inserted into the liquid accommodation space of the container.

[0065] FIG. 12 is a schematic cross-sectional view corresponding to FIG. 4 of a degassing device of another example. In the degassing device 1E shown in FIG. 12, the outer discharge pipe portion 422 is inserted into the liquid accommodation space 91E from the opening 92E of the container 90E, and the outlet 42a of the discharge pipe portion 42 is located below the opening 92E of the container 90E.

[0066] In this degassing device 1E, since the outer discharge pipe portion 422 is inserted into the liquid storage space 91E from the opening 92E of the container 90E, the liquid discharged from the outlet 42a of the discharge pipe portion 42 can be easily put into the container 90E.

[0067] FIG. 13 is a schematic cross-sectional view corresponding to FIG. 4 of a degassing device of another example. In the degassing device 1F shown in FIG. 13, the container 90F has an opening 94F that opens the liquid storage space 91F to the outside, in addition to an opening 92F that opens the liquid storage space 91F upward. The opening 94F is formed, for example, in the side wall of the container 90F and opens the liquid storage space 91F laterally. And the outer discharge pipe portion 422 is inserted into the liquid storage space 91F from the opening 94F of the container 90F, and the outlet 42a of the discharge pipe portion 42 is located below the opening 92F of the container 90F. Note that the space between the outer discharge pipe portion 422 and the opening 94F may or may not be sealed.

[0068] In this degassing device 1F, since the outer discharge pipe portion 422 is inserted into the liquid storage space 91F from the opening 94F of the container 90F, the liquid discharged from the outlet 42a of the discharge pipe portion 42 can be easily put into the container 90F. Moreover, since the opening 94F is formed in the side wall of the container 90F, even if the height of the container 90F is high, the outer discharge pipe portion 422 can be inserted into the liquid storage space 91F.

[0069] Further, for example, the vibration damping member may not be directly attached to the housing and the discharge device, but may be attached to the housing and the discharge device via other members. FIG. 14 is a schematic cross-sectional side view showing a degassing device of another example. FIG. 15 is an enlarged cross-sectional view showing an area near the vibration damping member of the degassing device shown in FIG. 14. In the degassing device 1G shown in FIGS. 14 and 15, the vibration damping member 103 is formed in a columnar shape such as a cylinder or a prism. An upper plate 104 having a thread groove 104a is connected to the upper end, which is one end of the vibration damping member 103, and a lower plate 105 having a thread groove 105a is connected to the lower end, which is the other end of the vibration damping member 103. Then, the upper plate 104 is fixed to the fixing plate 52 by screwing a screw 106 inserted into the through hole 52d of the fixing plate 52 into the thread groove 104a of the upper plate 104, and the lower plate 105 is fixed to the bottom plate 2 by screwing a screw 107 inserted into the through hole 2d of the bottom plate 2 into the thread groove 105a of the lower plate 105. As a result, the vibration damping member 103 is interposed between the bottom plate 2 of the housing 5 and the fixing plate 52 of the discharge device 50, and the discharge device 50 is supported with respect to the bottom plate 2 of the housing 5.

[0070] Further, for example, the vibration damping member may not be attached to the fixing plate of the discharge device, but may be attached to the pump of the discharge device. FIG. 16 is a schematic cross-sectional side view showing a degassing device of another example. In the degassing device 1H shown in FIG. 16, the discharge device 56 has the same pump 51 as in the above embodiment, but does not have a configuration corresponding to the fixing plate in the above embodiment. The vibration damping member 109 is directly or indirectly attached to the pump 51 and the bottom plate 2. The shape of the vibration damping member 109 and the attachment structure of the vibration damping member 109 to the pump 51 and the bottom plate 2 can be the same as, for example, the shape of the vibration damping member 101 shown in FIG. 7 and the attachment structure of the vibration damping member 101 to the fixing plate 52 and the bottom plate 2, the shape of the vibration damping member 103 shown in FIG. 15, and the attachment structure of the vibration damping member 103 to the fixing plate 52 and the bottom plate 2.

Industrial Applicability

[0071] The present invention can be used as a degassing device for use in liquid chromatography, gas chromatography, biochemical analysis equipment, inkjet filling equipment, etc. [Explanation of symbols]

[0072] 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H... degassing device, 2... bottom plate, 2a... top surface, 2c... screw hole, 2d... through hole, 3... front plate, 4... rear plate, 5... housing, 6... front panel, 7... storage space, 10, 20, 30... degassing module, 11... tube, 12... tube unit, 12a... inlet, 12b... outlet, 13... housing, 13a... opening, 14... lid portion, 15... connector portion, 16... connector portion, 17... outlet nozzle portion, 17 a...exhaust port, 18...open nozzle section, 18a...open port, 40...vacuum piping, 41...suction pipe section, 42, 42A...exhaust pipe section, 42a...outlet, 43-45...exhaust pipe section, 46...exhaust manifold section, 47...piping section, 48...detection pipe section, 50...exhaust device, 51...pump, 52...fixing plate, 52a...upper surface, 52b...lower surface, 52c...through hole, 52d...through hole, 53...motor, 54...intake port, 55...exhaust port, 56...exhaust device, 60...atmospheric release pipe, 61, 62, 63...open Discharge piping section, 64...Open gathering section, 65...Piping, 66...End part, 70...Atmospheric release valve, 71...Legs, 75...Adjustment valve, 76...Legs, 80...Control section, 85...Detector, 90,90B,90C,90D,90E,90F...Container, 90B1 ...Non-transparent part, 90B2...Transparent part, 91,91C,91D,91E,91F...Liquid storage space, 92,92C,92D,92E,92F...Opening, 93C,93D...Liquid collection part, 94F...Opening, 101...Vibration isolating member, 101a...Neck part, 101b...upper enlarged diameter portion, 101c...lower enlarged diameter portion, 101d...through hole, 102...screw, 103...vibration-damping member, 104...upper plate, 104a...screw groove, 105...lower plate, 105a...screw groove, 106...screw, 107...screw, 109...vibration-damping member, 421, 421A...inner discharge pipe portion, 422, 422A...outer discharge pipe portion, 422A1...base pipe portion, 422A2...translucent pipe portion, FR...front-to-rear direction, F...forward, R...rear, S1...fluid flow space, S2...decompression space.

Claims

1. A degassing module having a tube unit with gas permeability that partitions between a fluid flow space and a reduced pressure space; A vacuum pipe having a suction pipe portion connected to the degassing module and communicating with the reduced pressure space of the degassing module, and a discharge pipe portion having an outlet opened to the outside; A discharge device connected to the suction pipe portion and the discharge pipe portion and configured to send out gas from the suction pipe portion to the discharge pipe portion; A housing having a bottom plate and a front plate erected on the bottom plate, and mounting the discharge device above the bottom plate and behind the front plate; A container having a liquid storage space for storing the liquid discharged from the outlet of the discharge pipe portion; The discharge pipe portion has an inner discharge pipe portion located behind the front plate and connected to the discharge pipe portion, and an outer discharge pipe portion located in front of the front plate and having the outlet formed therein; At least a part of the outer discharge pipe portion and the container has translucency that allows visual recognition from the outside to the inside; A degassing device.

2. A degassing module having a tube unit with gas permeability that partitions between a fluid flow space and a reduced pressure space; A vacuum pipe having a suction pipe portion connected to the degassing module and communicating with the reduced pressure space of the degassing module, and a discharge pipe portion having an outlet opened to the outside; A discharge device connected to the suction pipe portion and the discharge pipe portion and configured to send out gas from the suction pipe portion to the discharge pipe portion; A housing having a bottom plate and a front plate erected on the bottom plate, and mounting the discharge device above the bottom plate and behind the front plate; A container having a liquid storage space for storing the liquid discharged from the outlet of the discharge pipe portion; The discharge pipe portion has an inner discharge pipe portion located behind the front plate and connected to the discharge pipe portion, and an outer discharge pipe portion located in front of the front plate and having the outlet formed therein; The container has translucency that allows visual recognition from the outside to the inside; A degassing device.

3. A degassing module having a tube unit with gas permeability that partitions between a fluid flow space and a reduced pressure space; A vacuum pipe having a suction pipe portion connected to the degassing module and communicating with the reduced pressure space of the degassing module, and a discharge pipe portion having an outlet opened to the outside; A discharge device connected to the suction pipe portion and the discharge pipe portion and configured to send out gas from the suction pipe portion to the discharge pipe portion; A housing having a bottom plate and a front plate erected on the bottom plate, and mounting the discharge device above the bottom plate and behind the front plate; A container having a liquid storage space for storing the liquid discharged from the outlet of the discharge pipe portion; The discharge pipe portion has an inner discharge pipe portion located behind the front plate and connected to the discharge pipe portion, and an outer discharge pipe portion located in front of the front plate and having an outlet formed therein; The outer discharge pipe portion has a base pipe portion continuous from the inner discharge pipe portion, and a translucent pipe portion connected to the base pipe portion, forming the outlet and having translucency allowing visual recognition from the outside to the inside; Degassing device.

4. A degassing module having a tube unit with gas permeability partitioning between a fluid flow space and a decompression space; A vacuum pipe having a suction pipe portion connected to the degassing module and communicating with the decompression space of the degassing module, and a discharge pipe portion having an outlet open to the outside; A discharge device connected to the suction pipe portion and the discharge pipe portion and configured to send out gas from the suction pipe portion to the discharge pipe portion; A housing having a bottom plate and a front plate erected on the bottom plate, and mounting the discharge device above the bottom plate and behind the front plate; A container having a liquid storage space for storing the liquid discharged from the outlet of the discharge pipe portion; The discharge pipe portion has an inner discharge pipe portion located behind the front plate and connected to the discharge pipe portion, and an outer discharge pipe portion located in front of the front plate and having an outlet formed therein; The upper part of the liquid storage space of the container is narrowed, and the container has an opening opening upward to the liquid storage space; The opening of the container is disposed below the outlet of the discharge pipe portion; The container has a liquid collecting portion that expands in a funnel shape upward from the opening; Degassing device.

5. Further comprising a control unit for controlling the operation and stop of the discharge device; The housing mounts the control unit above the bottom plate and behind the front plate; The degassing device according to any one of claims 1 to 4.

6. The container has an opening opening upward to the liquid storage space; The opening of the container is disposed below the outlet of the discharge pipe portion; The degassing device according to any one of claims 1 to 3.

7. The container has an opening opening the liquid storage space to the outside; The outer discharge pipe portion is inserted into the liquid storage space from the opening; The degassing device according to any one of claims 1 to 4.

8. At least a part of the vacuum pipe is a resin composition containing a polyolefin and a styrene-based thermoplastic elastomer. The degassing device according to any one of claims 1 to 4.

Images