WO2012039056A1 - Receiver tank for oil-cooled compressor - Google Patents

Receiver tank for oil-cooled compressor Download PDF

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Publication number
WO2012039056A1
WO2012039056A1 PCT/JP2010/066543 JP2010066543W WO2012039056A1 WO 2012039056 A1 WO2012039056 A1 WO 2012039056A1 JP 2010066543 W JP2010066543 W JP 2010066543W WO 2012039056 A1 WO2012039056 A1 WO 2012039056A1
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WO
WIPO (PCT)
Prior art keywords
receiver tank
guide plate
oil
tank body
wall
Prior art date
Application number
PCT/JP2010/066543
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French (fr)
Japanese (ja)
Inventor
石井　秀一
Original Assignee
北越工業株式会社
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Publication date
Application filed by 北越工業株式会社 filed Critical 北越工業株式会社
Priority to PCT/JP2010/066543 priority Critical patent/WO2012039056A1/en
Priority to JP2012534870A priority patent/JP5651701B2/en
Publication of WO2012039056A1 publication Critical patent/WO2012039056A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing

Definitions

  • the present invention relates to a receiver tank of an oil-cooled compressor, and more specifically, introduces compressed gas discharged as a gas-liquid mixed fluid with cooling oil from the compressor body, and supplies cooling oil from the introduced compressed gas.
  • the present invention relates to a receiver tank of an oil-cooled compressor for separating and removing.
  • cooling oil In an oil-cooled compressor, the compression action is performed while injecting oil (referred to as “cooling oil” in this specification) for the purpose of cooling, lubrication, and sealing in a gas such as air or gas sucked into the compressor body.
  • cooling oil injecting oil
  • the compressed gas discharged from the compressor main body contains a large amount of the aforementioned cooling oil.
  • the oil-cooled compressor cannot supply the compressed gas discharged from the compressor body to the consumer side as it is, and removes the cooling oil from the compressed gas discharged from the compressor body before supplying it to the consumer side. Work is required.
  • the compressed gas discharged from the discharge port 32 of the compressor body 30 is once introduced into a pressure vessel called a receiver tank 10 and introduced together with the compressed gas.
  • the cooled cooling oil is dropped to the bottom of the receiver tank 10 for separation and recovery (primary separation), and the compressed oil after the primary separation of the cooling oil is still in a mist state in the compressed gas.
  • the oil component in the compressed gas is further removed by passing through the filter element 13 for oil separation, and the compressed gas from which the oil component has been removed in this way is supplied to the consumer side, and the receiver.
  • the cooling oil recovered in the tank 10 can be supplied again to the oil supply port 31 of the compressor body 30 through the oil supply pipe 41 by using the pressure in the receiver tank 10 or the like.
  • the receiver tank 10 of the oil-cooled compressor 1 having a function as a gas-liquid separator that separates the cooling oil from the compressed gas in this way is a receiver tank body 10 ′ that is a pressure vessel formed in a substantially cylindrical shape as an example.
  • An inlet pipe 14 for introducing compressed gas discharged from the compressor body 30 as a gas-liquid mixed fluid, an exhaust port 16 for discharging the compressed gas after removing oil from the receiver tank body 10 ', and a receiver An oil discharge port 15 is provided for reintroducing the cooling oil collected in the tank into the oil supply port of the compressor main body.
  • the compressed gas is introduced into the receiver tank main body 10 ′ through the introduction pipe 14, this is introduced.
  • the cooling oil in the compressed gas falls due to gravity and accumulates at the bottom of the receiver tank body 10 ', whereby the cooling oil is primarily separated (see FIGS. 7 and 8).
  • the filter element 13 is an exhaust provided in the upper lid 18 of the receiver tank body 10 ′. It is provided in the receiver tank body 10 ′ in communication with the port 16, and the oil that still remains in the compressed gas when passing through the filter element 13 is removed to perform secondary separation of the cooling oil.
  • the compressed gas after the secondary separation is supplied to the consuming side, and the cooling oil recovered in the receiver tank 10 is supplied to the compressor main body 30 via the oil supply pipe 41 communicated with the oil discharge port 15. It is configured so that it can be supplied to the fuel filler port 31.
  • Japanese Utility Model Publication No. 32729 of 1983 shows a figure. 7 and 8
  • a guide plate 12 is provided in the receiver tank body 10 ′ in parallel with the inner wall 11 of the receiver tank body 10 ′, and a compressed gas is provided between the guide plate 12 and the inner wall 11 of the receiver tank body 10 ′.
  • an end plate for closing the gap between the one end 12a of the guide plate 12 and the inner wall 11 of the receiver tank main body 10 ′.
  • the guide plate is placed on the inner wall 11 of the receiver tank body 10 'as shown in FIGS. 12 and the inner wall 11 of the receiver tank body 10 ′ at least within a predetermined length range (in the example shown, a range of 12 a to 12 c) from the one end 12 a to the other end 12 b side.
  • a predetermined length range in the example shown, a range of 12 a to 12 c
  • the compressed gas can flow in the receiver tank body 10 'for a longer distance by providing the guide plate 12 and turning the compressed gas introduced into the receiver tank body 10'. Therefore, it is easy to promote the fall of the oil droplets contained in the compressed gas flow.
  • the compressed gas introduced into the receiver tank body 10 ′ becomes a swirl flow as described above, the oil in the compressed gas stream is separated from the air current by centrifugal force and collides with the inner wall of the receiver tank body 10 ′. Since the separation is promoted by this, the primary separation performance of the cooling oil in the receiver tank 10 can be improved by these actions.
  • the lower end edge 12d of the guide plate 12 is formed at a constant height from the one end 12a side to the other end 12b side, and the lower end edge 12d of the guide plate 12 is provided. Since the inner wall 11 of the receiver tank body 10 'is covered with the bottom plate 19, the above-mentioned bottom plate 19 forming the bottom of the guide channel 20 is disposed horizontally in the receiver tank body 10'. (See FIG. 7).
  • the cooling oil separated from the compressed gas when passing through the guide channel 20 formed between the inner wall 11 of the receiver tank body 10 ′ and the guide plate 12 falls on the bottom plate 19 and is guided to the guide channel 20.
  • the oil separator the filter element 13 in the illustrated example
  • the oil separation performance of the receiver tank 10 can be further improved, the amount of oil introduced into the oil separator (filter element 13) can be reduced, the life of the filter element 13 can be extended, and the number of replacements of the filter element 13 can be reduced. As a result, maintenance labor can be reduced, and the replacement cost of the filter element 13 can be reduced. As a result, the running cost can also be reduced.
  • the performance of the receiver tank can be improved in this way, even if the receiver tank is downsized, oil separation performance equal to or better than that of the conventional receiver tank can be obtained and introduced to the consumer side.
  • the amount of cooling oil can be reduced and the consumption of cooling oil can also be reduced.
  • the present invention has been made in view of the above-mentioned drawbacks of the prior art.
  • the receiver tank By improving the oil separation performance of the receiver tank, particularly the primary separation performance described above, with a relatively simple configuration, the receiver tank as a whole is improved. It is possible to reduce the size of the cooling oil and reduce the consumption of the cooling oil. Furthermore, the primary separation performance of the cooling oil is improved, and it is introduced into the oil separator that performs the secondary separation of the cooling oil.
  • An object of the present invention is to provide a receiver tank for an oil-cooled compressor that can reduce the amount of cooling oil and increase the life of a filter element used for secondary separation to reduce maintenance work and running costs. To do.
  • the receiver tank 10 of the oil-cooled compressor according to the present invention is arranged in the longitudinal direction above the receiver tank body 10 ', which is a substantially cylindrical pressure vessel whose axial direction is the vertical direction.
  • a guide plate 12 having a curved shape is attached, a guide channel 20 is formed between the inner wall 11 of the receiver tank body 10 'and the guide plate 12, and compressed gas discharged from the compressor body together with cooling oil is supplied.
  • the introduction pipe 14 to be introduced is attached so as to communicate with the guide channel 20, and compressed gas is discharged to the upper end side of the receiver tank body 10 ′ on the inner peripheral side of the guide plate 12 and out of the receiver tank body 10 ′.
  • the lower end edge 12d of the guide plate 12 is gradually extended downward from the one end 12a side to the other end 12b side in the longitudinal direction of the guide plate 12, and the lower end edge 12d of the guide plate 12 and the receiver tank body 10 ′ is covered with a bottom plate 19 to form a bottom surface of the guide channel 20 inclined downward from the one end 12a side to the other end 12b side of the guide plate 12;
  • the guide plate 12 is closed between the one end 12a and the inner wall 11 of the receiver tank body 10 ', and the guide plate 12 is opened between the other end 12b of the guide plate 12 and the inner wall 11 of the receiver tank body 10' to guide the guide plate 12.
  • the introduction pipe 14 communicates with the guide channel 20 on the one end 12a side of the guide plate 12 (Claim 1).
  • the filter element 13 communicating with the exhaust port 16 is accommodated in the receiver tank body 10 ′ and on the inner peripheral side of the guide plate 12, the filter element 13 It is preferable to arrange the lower end position of the guide plate 12 at the outlet 21 of the guide channel 20 at a lower position with respect to the lower end position of the guide channel 20 (see claim 2: FIGS. 1 and 5).
  • a notch 22 may be provided at the edge of the bottom plate 19 on the inner wall 11 side of the receiver tank body 10 '(Claim 4: see FIG. 6).
  • the receiver tank 10 of the oil-cooled compressor of the present invention With the configuration of the present invention described above, according to the receiver tank 10 of the oil-cooled compressor of the present invention, the conventional configuration described with reference to FIGS. Similarly to the receiver tank 10 of the technology, by generating a swirling flow of the compressed gas in the receiver tank body 10 ′, the flow distance of the compressed gas flow in the receiver tank body 10 ′ can be increased, and the compressed gas flow In addition, the following remarkable effects could be obtained while maintaining the advantage that the oil content inside could be separated by centrifugal force.
  • the lower end edge 12d of the guide plate 12 has a shape that gradually extends downward from one end 12a to the other end 12b of the guide plate 12, and between the lower end edge 12d of the guide plate 12 and the inner wall 11 of the receiver tank body 10 '.
  • the cooling oil is discharged obliquely downward toward the oil surface so as to move away from the exhaust port 16 according to the guidance by the bottom plate 19. Moreover, since the cross-sectional area of the induction channel 20 gradually increases toward the outlet, the flow rate of the compressed gas at the outlet of the induction channel 20 is reduced. As a result, it was possible to effectively prevent the cooling oil exiting the outlet 21 of the guide channel 20 from being scattered on the compressed gas flow flowing in the receiver tank body 10 '.
  • the filter element 13 communicating with the exhaust port 16 provided in the receiver tank body 10 ′ is arranged in the receiver tank body 10 ′ on the inner peripheral side of the guide plate 12, the filter element 13 is positioned at the lower end position of the filter element 13.
  • the cooling oil separated in the guide channel 20 by disposing the lower end position of the guide plate 12 at the outlet 21 of the guide channel 20 at a low position is lower than the filter element 13 and Since the oil is discharged downward from the outlet 21 of the guide channel 20, the cooling oil can be hardly introduced into the filter element 13.
  • the bottom plate 19 is structured to be inclined downward from the lower end edge 12d side of the guide plate 12 toward the inner wall 11 side of the receiver tank body 10 ′ (see FIG. 5), the bottom plate 19
  • the oil drop that has fallen above moves toward the outlet 21 of the guide channel 20 with a force applied to the inner wall 11 side of the receiver tank body 10 ′ due to the inclination along with the centrifugal force.
  • the notch 22 is provided at the edge of the bottom plate 19 on the inner wall 11 side of the receiver tank body 10 ′, when the oil droplet flowing on the bottom plate 19 reaches the notch 22, the notch 22 faces downward. Along with the compressed gas flow blown out, the oil drops fall down along the inner wall 11 of the receiver tank body 10 ′ through this notch 22. It was difficult to introduce the filter element 13 communicating with the exhaust port 16.
  • FIG. 2 is a sectional view taken along line II-II in FIG. 1.
  • the schematic side surface sectional view which shows the modification of the receiver tank of this invention.
  • FIG. 2 The schematic side surface sectional view which shows another modification of the receiver tank of this invention.
  • FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1 in a modification of the receiver tank of the present invention.
  • FIG. 8 is a sectional view taken along line VI-VI in FIG. 7. Explanatory drawing which shows the modification of a guide plate (conventional). Explanatory drawing which shows the modification of a guide plate (conventional).
  • the receiver tank 10 of the present invention has a guide plate 12 attached to an upper part of a receiver tank body 10 ', which is a substantially cylindrical pressure vessel having an axial direction in the vertical direction, and an inner wall 11 and a guide plate of the receiver tank body 10'. 12, a guide channel 20 for compressed gas is formed, an introduction pipe 14 for introducing the compressed gas from the compressor body 30 is provided in the guide channel 20, and cooling oil stored in the receiver tank body 10 ′ is stored. Between the lower end edge 12d of the guide plate 12 and the inner wall 11 of the receiver tank main body 10 ′, and the exhaust port 16 for discharging the compressed gas from which oil has been removed. The point covered with the bottom plate 19 forming the bottom surface of the guide channel 20 is the same as that of the conventional receiver tank 10 described with reference to FIGS.
  • the shape of the guide plate 12 in plan view and the arrangement of the introduction pipe 14 are the same as those of the receiver tank 10 shown as the prior art in FIG.
  • the one end 12a side of the guide plate 12 may be closed with the end plate 17 arranged in the radial direction of the receiver tank body 10 ′.
  • the introduction pipe 14 may be attached with the radial direction of the receiver tank body 10 'as the length direction as shown in FIG.
  • the end plate 17 is replaced with Similar to the guide plate 12 described with reference to FIGS. 9 and 10, the one end 12a of the guide plate 12 is brought into contact with the inner wall of the receiver tank body 10 ′ and the one end 12a of the guide plate 12 is directed toward the other end 12b. It is preferable to provide an inclined portion 121 having a shape that gradually increases the distance from the inner wall of the receiver tank main body 10 'in at least a predetermined length range (in the illustrated example, a range from 12a to 12c).
  • one side 14a in the width direction of the introduction pipe 14 in a plan view is parallel to a tangent line T in contact with the outer wall of the receiver tank body 10 'and It is preferable that the receiver tank body 10 'is attached so that the interval ⁇ with the tangent line T is as small as possible (see FIG. 2).
  • the other end 12b opened from the one end 12a side of the guide plate 12 whose distance from the inner wall of the receiver tank body 10 'is closed without closing the distance between the inner walls 11 of the receiver tank body 10'. It is the same as the receiver tank 10 described with reference to FIGS. 7 to 10 in that the swirling flow of the compressed gas is generated toward the side, that is, toward the outlet 21 of the guide channel 20. .
  • reference numeral 13 denotes a filter element for performing secondary separation of the cooling oil.
  • this filter element 13 is connected to the center of the upper cover 18 of the receiver tank body 10 '.
  • the cooling oil is secondarily separated through the filter element 13 by being disposed in the receiver tank main body 10 'on the inner peripheral side of the guide plate 12 in communication with the exhaust port 16 formed in
  • the configuration is the same as that of the conventional receiver tank 10 described with reference to FIGS. 7 to 10 in that only compressed gas can be discharged to the outside of the receiver tank body 10 ′ through the exhaust port 16.
  • the secondary separation of the cooling oil is replaced with the configuration shown in FIGS. 1 and 2, and for example, as shown in FIG. 3, an oil separator 13 ′ having a filter element 13 for oil separation is placed outside the receiver tank body 10 ′. Attaching and introducing the compressed gas after the cooling oil is primarily separated through the exhaust port 16 opened in the receiver tank main body 10 ′ to the oil separator 13 ′ to perform secondary separation of the cooling oil It is also good.
  • the exhaust port 16 is formed at the center of the upper lid 18 of the receiver tank body 10 'as shown in FIG. 1, or through the side wall of the receiver tank body 10' as shown in FIG.
  • Various configurations can be adopted as long as the opening at the center upper end side of the receiver tank body 10 ′ is opened at the center upper end side of the receiver tank body 10 ′, for example, the opening end of the pipe line inserted into 10 ′ is the exhaust port 16.
  • the oil separating filter element 13 accommodated in the inside communicates with the exhaust port 16 formed in this way, or the oil separator 13' arranged outside the receiver tank body 10 'is connected to these exhaust ports. 16 communicates.
  • the lower end edge 12d of the guide plate 12 is gradually extended downward from the one end 12a side toward the other end 12b side. This is different from the conventional receiver tank in which the lower end edge 12d of the guide plate 12 is formed at a constant height.
  • the bottom plate 19 blocks the gap between the lower end edge 12d of the guide plate 12 and the inner wall 11 of the receiver tank body 10 '.
  • the guide channel 20 has a bottom surface inclined downward from the one end 12a side to the other end 12b side of the guide plate 12, and the cross-sectional area of the guide channel 20 is directed toward the outlet. Gradually expand.
  • the height of the lower edge 12d of the guide plate 12 is the above-described guide channel in the configuration in which the filter element 13 for oil separation is accommodated in the receiver tank body 10 ′.
  • the lower end position of the guide plate 12 at the outlet 21 of the 20 is provided at a position lower than the lower end position of the filter element 13, so that the oil droplets exiting the outlet 21 of the guide channel 20 are difficult to be introduced into the filter element 13. preferable.
  • the lower end edge 12 d on the one end 12 a side of the guide plate 12 is also provided at a position lower than the lower end position of the filter element 13, and the entire lower end edge 12 d of the guide plate 12 is the filter element 13. It forms so that it may become a position lower than the lower end position.
  • the above-described bottom plate 19 that closes the gap between the lower end edge 12d of the guide plate 12 configured in this way and the inner wall 11 of the receiver tank main body 10 ′ has a width direction (the radial direction of the receiver tank main body). 5), the bottom plate 19 faces downward from the lower end edge 12d side of the guide plate 12 toward the inner wall 11 side of the receiver tank body 10 ', as shown in FIG. It may be inclined.
  • a notch 22 is provided in an edge portion of the bottom plate 19 that contacts the inner wall 11 of the receiver tank body 10 ′, and cooling oil moving on the bottom plate 19 moves downward through the notch 22. You may comprise so that it may fall.
  • the compressed gas discharged from the compressor main body as a gas-liquid mixed fluid with the cooling oil is introduced into the receiver tank 10 configured as described above via the introduction pipe 14, the compressed gas is introduced as described above. It is introduced into a guide channel 20 formed between the guide plate 12 and the inner wall 11 of the receiver tank body 10 ′ via the pipe 14.
  • the cooling oil in the compressed gas introduced into the induction channel 20 is heavy in the gas, the cooling oil is separated from the compressed gas flow generated in the induction channel 20 and falls, and the bottom surface of the induction channel 20 It reaches the above-mentioned bottom plate 19 forming the above, travels on the bottom plate 19 and moves toward the outlet of the induction channel together with the compressed gas flow.
  • the guide channel 20 has an arc shape formed between the inner wall of the receiver tank body 10 'and the guide plate 12, the cooling that flows on the bottom plate 19 due to the inclination described above.
  • the centrifugal force received by the cooling oil is increased, and a force in a direction to be pressed against the inner wall 11 surface of the receiver tank body 10 ′ is applied.
  • the cooling oil reaches the oil surface along the inner wall 11 of the receiver tank body 10 ′ even after exiting the outlet 21 of the guide channel 20, and is hardly scattered by the compressed gas flow flowing in the receiver tank body 10 ′.
  • the cross-sectional area of the guide channel 20 gradually increases toward the outlet, the flow velocity of the compressed gas at the outlet of the guide channel 20 is reduced, and cooling is performed at the outlet of the guide channel 20 by the compressed gas flow. Oil is difficult to splash. As a result, the scattered cooling oil is difficult to be introduced into the exhaust port 16 and the filter element 13 communicated with the exhaust port 16 together with the compressed gas flow.
  • the oil separation performance associated with the provision of the guide plate 12 is the same as the conventional receiver tank 10 described with reference to FIGS.
  • the bottom plate 19 is inclined in a predetermined direction as described above, so that further improvement in oil separation efficiency can be obtained, and the receiver tank 10 of the oil-cooled compressor can be installed. As a result of downsizing, the entire compressor can be made compact.
  • the oil component introduced into the oil separation filter element for secondary separation of the oil component that cannot be removed by primary separation and remains in the compressed gas can be reduced as much as possible.
  • the service life has been extended, and the maintenance labor and replacement cost associated with the filter element replacement have been reduced.
  • Oil-cooled compressor 10 Receiver tank 10 'Receiver tank body 11 Inner wall (of receiver tank body) 12 Guide plate 12a One end (of the guide plate) 12b The other end (of the guide plate) 12c boundary (inclined part and parallel part) 12d Lower edge (of the guide plate) 121 Inclined part 13 Filter element 13 'Oil separator 14 Introducing pipe 14a One side (introducing pipe 14) 15 Oil outlet (for cooling oil) 16 Exhaust port (for compressed gas) 17 End plate 18 Top lid 19 Bottom plate 20 Guide channel 21 Exit (of the guide channel) 22 Notch 30 Compressor body 31 Refueling port 32 Discharge port 41 Refueling piping T Distance between tangent lines ⁇ CT to the outer periphery of the receiver tank body

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

To provide a receiver tank having improved oil separation performance, and particularly a receiver tank having improved primary separation performance. A guide plate (12) is attached within a cylindrical receiver tank body (10') at the upper part thereof to form a guide flow path (20) between the guide plate (12) and the inner wall (11) of the receiver tank body (10'), the receiver tank body (10') having a gas discharge opening (16) formed on the upper end side thereof. The lower end (12d) of the guide plate (12) is extended so as to gradually descend from the one end (12a) side to the other end (12b) side of the guide plate (12). The gap between the lower end (12d) and the inner wall (11) of the receiver tank body (10') is covered with a bottom plate (19) to form the bottom surface of the guide flow path (20), the bottom surface sloping downward from the one end (12a) side to the other end (12b) side. An introduction pipe (14) for introducing compressed gas, which is discharged from the compressor body, into the guide flow path (20) is connected to the guide flow path (20) on the one end (12a) side on which the gap between the one end (12a) and the inner wall (11) of the receiver tank body (10') is closed.

Description

油冷式圧縮機のレシーバタンクOil-cooled compressor receiver tank
　本発明は油冷式圧縮機のレシーバタンクに関し，より詳細には，圧縮機本体より冷却油との気液混合流体として吐出された圧縮気体を導入し，この導入された圧縮気体より冷却油を分離し，除去するための油冷式圧縮機のレシーバタンクに関する。 The present invention relates to a receiver tank of an oil-cooled compressor, and more specifically, introduces compressed gas discharged as a gas-liquid mixed fluid with cooling oil from the compressor body, and supplies cooling oil from the introduced compressed gas. The present invention relates to a receiver tank of an oil-cooled compressor for separating and removing.
　油冷式圧縮機では，圧縮機本体に吸入された空気やガスなどの気体に冷却・潤滑・密封を目的として油（本明細書において「冷却油」という。）の噴射を行いながら圧縮作用を行うことから，圧縮機本体が吐出する圧縮気体には，前述の冷却油が多量に含まれている。 In an oil-cooled compressor, the compression action is performed while injecting oil (referred to as “cooling oil” in this specification) for the purpose of cooling, lubrication, and sealing in a gas such as air or gas sucked into the compressor body. As a result, the compressed gas discharged from the compressor main body contains a large amount of the aforementioned cooling oil.
　そのため，油冷式圧縮機では圧縮機本体より吐出された圧縮気体をそのまま消費側に供給することができず，消費側に供給する前に圧縮機本体が吐出した圧縮気体から冷却油を除去するための作業が必要となる。 Therefore, the oil-cooled compressor cannot supply the compressed gas discharged from the compressor body to the consumer side as it is, and removes the cooling oil from the compressed gas discharged from the compressor body before supplying it to the consumer side. Work is required.
　そこで，油冷式圧縮機１では図７に示すように圧縮機本体３０の吐出口３２より吐出された圧縮気体を，一旦，レシーバタンク１０と呼ばれる圧力容器内に導入して，圧縮気体と共に導入された冷却油をこのレシーバタンク１０内の底部に落下させて分離，回収すると共に（一次分離），このようにして冷却油の一次分離を行った後の圧縮気体中に未だミスト等の状態で残る冷却油を除去するために，油分離用のフィルタエレメント１３を通過させて圧縮気体中の油分を更に除去した後，このようにして油分を除去した圧縮気体を消費側に供給すると共に，レシーバタンク１０内に回収された冷却油は，レシーバタンク１０内の圧力を利用する等して給油配管４１を介して再度，圧縮機本体３０の給油口３１に給油できるようにしている。 Therefore, in the oil-cooled compressor 1, as shown in FIG. 7, the compressed gas discharged from the discharge port 32 of the compressor body 30 is once introduced into a pressure vessel called a receiver tank 10 and introduced together with the compressed gas. The cooled cooling oil is dropped to the bottom of the receiver tank 10 for separation and recovery (primary separation), and the compressed oil after the primary separation of the cooling oil is still in a mist state in the compressed gas. In order to remove the remaining cooling oil, the oil component in the compressed gas is further removed by passing through the filter element 13 for oil separation, and the compressed gas from which the oil component has been removed in this way is supplied to the consumer side, and the receiver. The cooling oil recovered in the tank 10 can be supplied again to the oil supply port 31 of the compressor body 30 through the oil supply pipe 41 by using the pressure in the receiver tank 10 or the like.
　このように圧縮気体から冷却油を分離する気液分離器としての機能を有する油冷式圧縮機１のレシーバタンク１０は，一例として略円筒状に形成された圧力容器であるレシーバタンク本体１０’に圧縮機本体３０より気液混合流体として吐出された圧縮気体を導入するための導入管１４，油分を除去した後の圧縮気体をレシーバタンク本体１０’外に排出するための排気口１６，レシーバタンク内に回収された冷却油を再度圧縮機本体の給油口に導入するための排油口１５を設け，導入管１４を介してレシーバタンク本体１０’内に圧縮気体を導入すると，この導入された圧縮気体中の冷却油が重力により落下してレシーバタンク本体１０’の底部に溜まることで，冷却油の一次分離が行われるようになっている（図７，８参照）。 The receiver tank 10 of the oil-cooled compressor 1 having a function as a gas-liquid separator that separates the cooling oil from the compressed gas in this way is a receiver tank body 10 ′ that is a pressure vessel formed in a substantially cylindrical shape as an example. An inlet pipe 14 for introducing compressed gas discharged from the compressor body 30 as a gas-liquid mixed fluid, an exhaust port 16 for discharging the compressed gas after removing oil from the receiver tank body 10 ', and a receiver An oil discharge port 15 is provided for reintroducing the cooling oil collected in the tank into the oil supply port of the compressor main body. When the compressed gas is introduced into the receiver tank main body 10 ′ through the introduction pipe 14, this is introduced. The cooling oil in the compressed gas falls due to gravity and accumulates at the bottom of the receiver tank body 10 ', whereby the cooling oil is primarily separated (see FIGS. 7 and 8).
　そして，前述の一次分離では除去できなかった圧縮気体中の油分を二次分離するための油分離器として，図７に示す例ではフィルタエレメント１３をレシーバタンク本体１０’の上蓋１８に設けた排気口１６に連通して前記レシーバタンク本体１０’内に設け，フィルタエレメント１３を通過する際に圧縮気体中に未だ残る油分を除去して冷却油の二次分離を行い，このようにして冷却油の二次分離が終了した後の圧縮気体を消費側に供給すると共に，レシーバタンク１０内に回収された冷却油は，排油口１５に連通された給油配管４１を介して圧縮機本体３０の給油口３１に供給できるように構成されている。 As an oil separator for secondary separation of the oil content in the compressed gas that could not be removed by the primary separation described above, in the example shown in FIG. 7, the filter element 13 is an exhaust provided in the upper lid 18 of the receiver tank body 10 ′. It is provided in the receiver tank body 10 ′ in communication with the port 16, and the oil that still remains in the compressed gas when passing through the filter element 13 is removed to perform secondary separation of the cooling oil. The compressed gas after the secondary separation is supplied to the consuming side, and the cooling oil recovered in the receiver tank 10 is supplied to the compressor main body 30 via the oil supply pipe 41 communicated with the oil discharge port 15. It is configured so that it can be supplied to the fuel filler port 31.
　以上のように構成された油冷式圧縮機のレシーバタンク１０において，冷却油の分離性能をより一層向上させるべく，昭和５８年（１９８３年）日本国実用新案公告第３２７２９号公報には，図７及び図８に示すようにレシーバタンク本体１０’内にこのレシーバタンク本体１０’の内壁１１と平行に案内板１２を設け，この案内板１２とレシーバタンク本体１０’の内壁１１間に圧縮気体の流れを誘導する誘導流路２０を形成し，この誘導流路２０による誘導で圧縮機本体３０より導入した圧縮気体をレシーバタンク本体１０’内で旋回させることにより，圧縮気体をレシーバタンク１０内で比較的長距離移動させることができるようにして，冷却油の分離性能を向上させることが提案されている（特許文献１）。 In order to further improve the separation performance of the cooling oil in the receiver tank 10 of the oil-cooled compressor configured as described above, Japanese Utility Model Publication No. 32729 of 1983 shows a figure. 7 and 8, a guide plate 12 is provided in the receiver tank body 10 ′ in parallel with the inner wall 11 of the receiver tank body 10 ′, and a compressed gas is provided between the guide plate 12 and the inner wall 11 of the receiver tank body 10 ′. By forming the induction flow path 20 for guiding the flow of the gas, and rotating the compressed gas introduced from the compressor main body 30 by the induction by the induction flow path 20 in the receiver tank main body 10 ′, the compressed gas is introduced into the receiver tank 10. Has been proposed to improve the cooling oil separation performance (Patent Document 1).
　また，日本国特許第４１６７４５７号公報には，図7及び図８に記載のレシーバタンク１０の構成にあっては，案内板１２の一端１２ａとレシーバタンク本体１０’の内壁１１間を塞ぐ端板１７が誘導流路２０に案内されて旋回流となった圧縮気体の流れに対して抵抗となることに鑑み，図９及び図１０に示すようにレシーバタンク本体１０’の内壁１１に前記案内板１２の一端１２ａを接触させると共に，案内板１２の前記一端１２ａから他端１２ｂ側に向かう少なくとも所定の長さ範囲（図示の例では１２ａから１２ｃの範囲）にレシーバタンク本体１０’の内壁１１との間隔を徐々に拡大する形状の傾斜部１２１を設けることも提案されている（特許文献２）。 Further, in Japanese Patent No. 4167457, in the configuration of the receiver tank 10 shown in FIGS. 7 and 8, an end plate for closing the gap between the one end 12a of the guide plate 12 and the inner wall 11 of the receiver tank main body 10 ′. In view of the fact that 17 becomes a resistance against the flow of the compressed gas that has been guided by the guide flow path 20 and turned into a swirl flow, the guide plate is placed on the inner wall 11 of the receiver tank body 10 'as shown in FIGS. 12 and the inner wall 11 of the receiver tank body 10 ′ at least within a predetermined length range (in the example shown, a range of 12 a to 12 c) from the one end 12 a to the other end 12 b side. It has also been proposed to provide an inclined portion 121 having a shape that gradually increases the interval (Patent Document 2).
昭和５８年（１９８３年）日本国実用新案公告第３２７２９号公報1983 Japanese Utility Model Public Notice No. 32729 日本国特許第４１６７４５７号公報Japanese Patent No. 4167457
　以上で説明したレシーバタンク１０の構成では，案内板１２を設けてレシーバタンク本体１０’内に導入された圧縮気体を旋回させることにより，圧縮気体はレシーバタンク本体１０’内をより長い距離流動できることから，圧縮気体流中に含まれる油滴の落下を促し易くなっている。 In the configuration of the receiver tank 10 described above, the compressed gas can flow in the receiver tank body 10 'for a longer distance by providing the guide plate 12 and turning the compressed gas introduced into the receiver tank body 10'. Therefore, it is easy to promote the fall of the oil droplets contained in the compressed gas flow.
　しかも，レシーバタンク本体１０’内に導入された圧縮気体は前述のように旋回流となることから，圧縮気体流中の油分が遠心力によって気流より分離され，レシーバタンク本体１０’の内壁に衝突することによって分離が促進されることから，これらの作用によってレシーバタンク１０における冷却油の一次分離性能を向上させることができるものとなっている。 Moreover, since the compressed gas introduced into the receiver tank body 10 ′ becomes a swirl flow as described above, the oil in the compressed gas stream is separated from the air current by centrifugal force and collides with the inner wall of the receiver tank body 10 ′. Since the separation is promoted by this, the primary separation performance of the cooling oil in the receiver tank 10 can be improved by these actions.
　しかし，従来のレシーバタンク１０の構造にあっては，案内板１２の下端縁１２ｄが一端１２ａ側から他端１２ｂ側にかけて一定の高さに形成されていると共に，この案内板１２の下端縁１２ｄとレシーバタンク本体１０’の内壁１１を底板１９で覆った構成となっていることから，誘導流路２０の底部を成す前述の底板１９はレシーバタンク本体１０’内に水平方向に配置されている（図７参照）。 However, in the structure of the conventional receiver tank 10, the lower end edge 12d of the guide plate 12 is formed at a constant height from the one end 12a side to the other end 12b side, and the lower end edge 12d of the guide plate 12 is provided. Since the inner wall 11 of the receiver tank body 10 'is covered with the bottom plate 19, the above-mentioned bottom plate 19 forming the bottom of the guide channel 20 is disposed horizontally in the receiver tank body 10'. (See FIG. 7).
　そして，レシーバタンク本体１０’の内壁１１と案内板１２間に形成された誘導流路２０内を通過する際に圧縮気体より分離された冷却油は，底板１９上に落下して誘導流路２０内を流れる圧縮気体流に押されながら水平方向に移動する結果，誘導流路２０の出口２１を出る際に圧縮流体の流れに乗って飛散し易く，このようにして飛散した冷却油が更に圧縮気体の流れに乗って油分離器（図示の例ではフィルタエレメント１３）に到達し易いものとなっている。 Then, the cooling oil separated from the compressed gas when passing through the guide channel 20 formed between the inner wall 11 of the receiver tank body 10 ′ and the guide plate 12 falls on the bottom plate 19 and is guided to the guide channel 20. As a result of moving in the horizontal direction while being pushed by the compressed gas flow flowing through the inside, it is easy to scatter on the flow of the compressed fluid when exiting the outlet 21 of the guide channel 20, and the splattered cooling oil is further compressed. It is easy to reach the oil separator (the filter element 13 in the illustrated example) by riding on the gas flow.
　そのため，誘導流路２０の出口２１を出た冷却油が飛散することを防止してレシーバタンク本体１０’の底部の油溜まりに回収することができれば，レシーバタンク１０の油分離性能，特に前述した一次分離性能をより一層向上させることができ，油分離器（フィルタエレメント１３）に対する油分の導入量が減少してフィルタエレメント１３の寿命を延長することができると共に，フィルタエレメント１３の交換回数が減少することによりメンテナンス労力が軽減でき，更にフィルタエレメント１３の交換費用が減少する結果，ランニングコストも減少させることができる。 Therefore, if the cooling oil that has exited the outlet 21 of the guide channel 20 can be prevented from being scattered and recovered in the oil reservoir at the bottom of the receiver tank body 10 ', the oil separation performance of the receiver tank 10, particularly the above-described The primary separation performance can be further improved, the amount of oil introduced into the oil separator (filter element 13) can be reduced, the life of the filter element 13 can be extended, and the number of replacements of the filter element 13 can be reduced. As a result, maintenance labor can be reduced, and the replacement cost of the filter element 13 can be reduced. As a result, the running cost can also be reduced.
　しかも，このようにしてレシーバタンクの性能を向上させることができれば，レシーバタンクを小型化した場合であっても従来のレシーバタンクと同等以上の油分離性能が得られると共に，消費側に導入される冷却油量が減少して冷却油の消費量も減少させることができる。 Moreover, if the performance of the receiver tank can be improved in this way, even if the receiver tank is downsized, oil separation performance equal to or better than that of the conventional receiver tank can be obtained and introduced to the consumer side. The amount of cooling oil can be reduced and the consumption of cooling oil can also be reduced.
　そこで本発明は，上記従来技術における欠点に鑑みてなされたものであり，比較的簡単な構成によりレシーバタンクの油分離性能，特に前述した一次分離性能を向上させることで，レシーバタンクを全体的に小型化することが可能であると共に冷却油の消費量を減少することができ，更に，冷却油の一次分離性能が向上することで，冷却油の二次分離を行う油分離器に導入される冷却油量を減少して二次分離用に使用するフィルタエレメントの寿命を増大してメンテナンスの手間やランニングコストの低減を図ることのできる油冷式圧縮機のレシーバタンクを提供することを目的とする。 Accordingly, the present invention has been made in view of the above-mentioned drawbacks of the prior art. By improving the oil separation performance of the receiver tank, particularly the primary separation performance described above, with a relatively simple configuration, the receiver tank as a whole is improved. It is possible to reduce the size of the cooling oil and reduce the consumption of the cooling oil. Furthermore, the primary separation performance of the cooling oil is improved, and it is introduced into the oil separator that performs the secondary separation of the cooling oil. An object of the present invention is to provide a receiver tank for an oil-cooled compressor that can reduce the amount of cooling oil and increase the life of a filter element used for secondary separation to reduce maintenance work and running costs. To do.
　以下に，課題を解決するための手段を，発明を実施するための形態で使用する符号と共に記載する。この符号は，特許請求の範囲の記載と発明を実施するための形態の記載との対応を明らかにするためのものであり，言うまでもなく，本願発明の技術的範囲の解釈に制限的に用いられるものではない。 Hereinafter, means for solving the problem will be described together with reference numerals used in the embodiment for carrying out the invention. This code is used to clarify the correspondence between the description of the scope of claims and the description of the mode for carrying out the invention. Needless to say, it is used in a limited manner for the interpretation of the technical scope of the present invention. It is not a thing.
　上記目的を達成するために，本発明の油冷式圧縮機のレシーバタンク１０は，軸線方向を上下方向と成す略円筒状の圧力容器であるレシーバタンク本体１０’の内部上方に，長手方向に湾曲した形状の案内板１２を取り付けて，前記レシーバタンク本体１０’の内壁１１と前記案内板１２との間に誘導流路２０を形成し，圧縮機本体から冷却油と共に吐出された圧縮気体を導入する導入管１４を前記誘導流路２０に連通するよう取り付けると共に，前記案内板１２の内周側において前記レシーバタンク本体１０’の上端側に，前記レシーバタンク本体１０’外に圧縮気体を排出する排気口１６を設けたレシーバタンク１０において，
　前記案内板１２の下端縁１２ｄを，該案内板１２の長手方向における一端１２ａ側から他端１２ｂ側に向かって徐々に下方に延長し，前記案内板１２の下端縁１２ｄと，前記レシーバタンク本体１０’の内壁１１間を底板１９で覆って，前記案内板１２の前記一端１２ａ側から前記他端１２ｂ側に向かって下向きに傾斜する前記誘導流路２０の底面を形成すると共に，
　前記案内板１２の前記一端１２ａと前記レシーバタンク本体１０’の内壁１１間を閉塞すると共に，前記案内板１２の前記他端１２ｂと前記レシーバタンク本体１０’の内壁１１間を開放して前記誘導流路２０の出口２１を形成し，
　前記導入管１４を，前記案内板１２の前記一端１２ａ側において前記誘導流路２０に連通したことを特徴とする（請求項１）。 In order to achieve the above object, the receiver tank 10 of the oil-cooled compressor according to the present invention is arranged in the longitudinal direction above the receiver tank body 10 ', which is a substantially cylindrical pressure vessel whose axial direction is the vertical direction. A guide plate 12 having a curved shape is attached, a guide channel 20 is formed between the inner wall 11 of the receiver tank body 10 'and the guide plate 12, and compressed gas discharged from the compressor body together with cooling oil is supplied. The introduction pipe 14 to be introduced is attached so as to communicate with the guide channel 20, and compressed gas is discharged to the upper end side of the receiver tank body 10 ′ on the inner peripheral side of the guide plate 12 and out of the receiver tank body 10 ′. In the receiver tank 10 provided with the exhaust port 16 to be
The lower end edge 12d of the guide plate 12 is gradually extended downward from the one end 12a side to the other end 12b side in the longitudinal direction of the guide plate 12, and the lower end edge 12d of the guide plate 12 and the receiver tank body 10 ′ is covered with a bottom plate 19 to form a bottom surface of the guide channel 20 inclined downward from the one end 12a side to the other end 12b side of the guide plate 12;
The guide plate 12 is closed between the one end 12a and the inner wall 11 of the receiver tank body 10 ', and the guide plate 12 is opened between the other end 12b of the guide plate 12 and the inner wall 11 of the receiver tank body 10' to guide the guide plate 12. Forming an outlet 21 of the channel 20;
The introduction pipe 14 communicates with the guide channel 20 on the one end 12a side of the guide plate 12 (Claim 1).
　上記構成のレシーバタンク１０において，前記排気口１６に連通するフィルタエレメント１３を前記レシーバタンク本体１０’内で，且つ，前記案内板１２の内周側に収容する構成とした場合，前記フィルタエレメント１３の下端位置に対して，前記誘導流路２０の出口２１における前記案内板１２の下端位置を低位置に配置することが好ましい（請求項２：図１，５参照）。 In the receiver tank 10 having the above configuration, when the filter element 13 communicating with the exhaust port 16 is accommodated in the receiver tank body 10 ′ and on the inner peripheral side of the guide plate 12, the filter element 13 It is preferable to arrange the lower end position of the guide plate 12 at the outlet 21 of the guide channel 20 at a lower position with respect to the lower end position of the guide channel 20 (see claim 2: FIGS. 1 and 5).
　また，前記底板１９を，前記案内板１２の下端縁１２ａ側から，前記レシーバタンク本体１０’の内壁１１側に向かって下向きに傾斜させた構成を採用することもできる（請求項４：図５参照）。 Further, it is possible to adopt a configuration in which the bottom plate 19 is inclined downward from the lower end edge 12a side of the guide plate 12 toward the inner wall 11 side of the receiver tank body 10 '(Claim 4: FIG. 5). reference).
　更に，前記レシーバタンク本体１０’の内壁１１側における前記底板１９の縁に切欠２２を設けるものとすることもできる（請求項４：図６参照）。 Furthermore, a notch 22 may be provided at the edge of the bottom plate 19 on the inner wall 11 side of the receiver tank body 10 '(Claim 4: see FIG. 6).
　以上説明した本発明の構成により，本発明の油冷式圧縮機のレシーバタンク１０によれば，案内板１２を設けた構成を採用したことに伴い，図７～１０を参照して説明した従来技術のレシーバタンク１０と同様，レシーバタンク本体１０’内で圧縮気体の旋回流を生じさせることにより，レシーバタンク本体１０’内における圧縮気体流の流動距離を長くすることができると共に，圧縮気体流中の油分を遠心力によって分離することができるという利点をそのままに，更に，以下の顕著な効果を得ることができた。 With the configuration of the present invention described above, according to the receiver tank 10 of the oil-cooled compressor of the present invention, the conventional configuration described with reference to FIGS. Similarly to the receiver tank 10 of the technology, by generating a swirling flow of the compressed gas in the receiver tank body 10 ′, the flow distance of the compressed gas flow in the receiver tank body 10 ′ can be increased, and the compressed gas flow In addition, the following remarkable effects could be obtained while maintaining the advantage that the oil content inside could be separated by centrifugal force.
　案内板１２の下端縁１２ｄを案内板１２の一端１２ａから他端１２ｂに向かって徐々に下方に延長した形状と成すと共に，案内板１２の下端縁１２ｄとレシーバタンク本体１０’の内壁１１間を塞ぐ底板１９を設け，誘導流路２０に出口２１側に向かって下向きに傾斜する底面を設けたことにより，誘導流路２０内で圧縮気体流と分離されて底板１９上を流れる冷却油は，この底板１９の傾斜によって流速を増す結果，遠心力によってレシーバタンク本体１０’の内壁１１側に押し付けられるように移動すると共に，傾斜した底板１９に案内されて誘導流路２０の出口２１を出た冷却油は，底板１９による案内に従って排気口１６から遠ざかるように油面に向かって斜め下向きに排出される。また、前記誘導流路２０の断面積が出口に向かって徐々に拡大することから、前記誘導流路２０出口の圧縮気体の流速が低減される。その結果，誘導流路２０の出口２１を出た冷却油がレシーバタンク本体１０’内を流れる圧縮気体流に乗って飛散することを効果的に防止できた。 The lower end edge 12d of the guide plate 12 has a shape that gradually extends downward from one end 12a to the other end 12b of the guide plate 12, and between the lower end edge 12d of the guide plate 12 and the inner wall 11 of the receiver tank body 10 '. By providing the bottom plate 19 to be closed and the bottom surface of the guide channel 20 inclined downward toward the outlet 21 side, the cooling oil flowing on the bottom plate 19 separated from the compressed gas flow in the guide channel 20 is As a result of increasing the flow velocity due to the inclination of the bottom plate 19, it moves so as to be pressed against the inner wall 11 side of the receiver tank body 10 ′ by centrifugal force, and is guided by the inclined bottom plate 19 and exits the outlet 21 of the guide channel 20. The cooling oil is discharged obliquely downward toward the oil surface so as to move away from the exhaust port 16 according to the guidance by the bottom plate 19. Moreover, since the cross-sectional area of the induction channel 20 gradually increases toward the outlet, the flow rate of the compressed gas at the outlet of the induction channel 20 is reduced. As a result, it was possible to effectively prevent the cooling oil exiting the outlet 21 of the guide channel 20 from being scattered on the compressed gas flow flowing in the receiver tank body 10 '.
　このようにして冷却油の飛散を防止して円滑に油溜まりに落下させることができたことから，レシーバタンク１０における冷却油の一次分離性能が向上し，レシーバタンク１０を小型化した場合であっても従来のレシーバタンクに匹敵する油分離性能が得られると共に，冷却油の消費量を減少させることができた。 In this way, since the cooling oil could be prevented from being scattered and smoothly dropped into the oil reservoir, the primary separation performance of the cooling oil in the receiver tank 10 was improved, and the receiver tank 10 was downsized. However, oil separation performance comparable to conventional receiver tanks was obtained, and consumption of cooling oil was reduced.
　また，冷却油の一次分離性能が向上した結果，冷却油の二次分離を行うレシーバタンク本体１０’内のフィルタエレメント１３（図１，２参照）や，レシーバタンク本体１０’に外付けされた油分離器１３’のフィルタエレメント１３（図３参照）に導入される冷却油量が減少し，これらのフィルタエレメント１３の寿命を延長することができ，フィルタエレメント１３の交換に伴うメンテナンスの労力とランニングコストの軽減を図ることができた。 Further, as a result of improving the primary separation performance of the cooling oil, it is externally attached to the filter element 13 (see FIGS. 1 and 2) in the receiver tank main body 10 ′ for performing the secondary separation of the cooling oil or the receiver tank main body 10 ′. The amount of cooling oil introduced into the filter element 13 (see FIG. 3) of the oil separator 13 ′ is reduced, the life of these filter elements 13 can be extended, and the maintenance labor associated with the replacement of the filter element 13 is reduced. We were able to reduce running costs.
　レシーバタンク本体１０’に設けた排気口１６に連通するフィルタエレメント１３を前記案内板１２の内周側においてレシーバタンク本体１０’内に配置した構成にあっては，このフィルタエレメント１３の下端位置に対し，前記誘導流路２０の出口２１における前記案内板１２の下端位置を低位置に配置することにより誘導流路２０内で分離された冷却油は，フィルタエレメント１３よりも低い位置で，且つ，下向きに誘導流路２０の出口２１より排出されることから，フィルタエレメント１３に対して冷却油が導入され難いものとすることができた。 In the configuration in which the filter element 13 communicating with the exhaust port 16 provided in the receiver tank body 10 ′ is arranged in the receiver tank body 10 ′ on the inner peripheral side of the guide plate 12, the filter element 13 is positioned at the lower end position of the filter element 13. On the other hand, the cooling oil separated in the guide channel 20 by disposing the lower end position of the guide plate 12 at the outlet 21 of the guide channel 20 at a low position is lower than the filter element 13 and Since the oil is discharged downward from the outlet 21 of the guide channel 20, the cooling oil can be hardly introduced into the filter element 13.
　さらに，前述した底板１９を，前記案内板１２の下端縁１２ｄ側から前記レシーバタンク本体１０’の内壁１１側に向かって下向きに傾斜させた構造とした場合（図５参照）には，底板１９上に落下した油滴は，遠心力と共にこの傾斜によってもレシーバタンク本体１０’の内壁１１側に押し付けられる力が加わった状態で誘導流路２０の出口２１に向かって移動することから，冷却油は誘導流路２０の出口２１を出た後にもレシーバタンク本体１０’の内壁を伝って落下することとなり，その結果，誘導流路２０を出た冷却油は圧縮気体流によって飛散し難く，レシーバタンク本体１０’の上部中心に設けられている排気口１６，及びこの排気口１６に連通された油分離器のフィルタエレメント１３に対してより一層導入され難いものとすることができた。 Further, when the above-described bottom plate 19 is structured to be inclined downward from the lower end edge 12d side of the guide plate 12 toward the inner wall 11 side of the receiver tank body 10 ′ (see FIG. 5), the bottom plate 19 The oil drop that has fallen above moves toward the outlet 21 of the guide channel 20 with a force applied to the inner wall 11 side of the receiver tank body 10 ′ due to the inclination along with the centrifugal force. Will drop along the inner wall of the receiver tank body 10 'even after exiting the outlet 21 of the induction channel 20, and as a result, the cooling oil that has exited the induction channel 20 is not easily scattered by the compressed gas flow. More difficult to be introduced into the exhaust port 16 provided in the upper center of the tank body 10 ′ and the filter element 13 of the oil separator communicated with the exhaust port 16. Rukoto could be.
　また，レシーバタンク本体１０’の内壁１１側における前記底板１９の縁に切欠２２を設けた構成にあっては，底板１９上を流れる油滴がこの切欠２２に達すると，切欠２２を介して下向きに吹き出す圧縮気体流と共にこの切欠２２を介してレシーバタンク本体１０’の内壁１１を伝って下方に落下することから，これによって更に誘導流路２０内で分離された油滴が，排気口１６やこの排気口１６に連通するフィルタエレメント１３に導入され難くすることができた。 Further, in the configuration in which the notch 22 is provided at the edge of the bottom plate 19 on the inner wall 11 side of the receiver tank body 10 ′, when the oil droplet flowing on the bottom plate 19 reaches the notch 22, the notch 22 faces downward. Along with the compressed gas flow blown out, the oil drops fall down along the inner wall 11 of the receiver tank body 10 ′ through this notch 22. It was difficult to introduce the filter element 13 communicating with the exhaust port 16.
本発明の目的及び優位性は，各部材を指称する符号を用いた添付図面に基づいて以下の好適な実施形態の詳細な説明により，理解することができる。 The objects and advantages of the present invention can be understood by the following detailed description of the preferred embodiments based on the accompanying drawings using the reference numerals for the respective members.
本発明のレシーバタンクの概略側面断面図。The schematic side surface sectional drawing of the receiver tank of this invention. 図１のII－II線断面図。FIG. 2 is a sectional view taken along line II-II in FIG. 1. 本発明のレシーバタンクの変形例を示す概略側面断面図。The schematic side surface sectional view which shows the modification of the receiver tank of this invention. 案内板の展開図。FIG. 本発明のレシーバタンクの別の変形例を示す概略側面断面図。The schematic side surface sectional view which shows another modification of the receiver tank of this invention. 本発明のレシーバタンクの変形例における図１のII－II線断面図。FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1 in a modification of the receiver tank of the present invention. 従来のレシーバタンクを備えた油冷式圧縮機の概略説明図。Schematic explanatory drawing of the oil-cooled compressor provided with the conventional receiver tank. 図７のVI－VI線断面図。FIG. 8 is a sectional view taken along line VI-VI in FIG. 7. 案内板の変形例を示す説明図（従来）。Explanatory drawing which shows the modification of a guide plate (conventional). 案内板の変形例を示す説明図（従来）。Explanatory drawing which shows the modification of a guide plate (conventional).
　以下に，添付図面を参照しながら本発明の油冷式圧縮機のレシーバタンク１０について説明する。 Hereinafter, the receiver tank 10 of the oil-cooled compressor of the present invention will be described with reference to the accompanying drawings.
　なお，以下の説明において，従来技術として説明したレシーバタンクの構成と対応する構成については同一の符号を用いて説明する。 In the following description, the configuration corresponding to the configuration of the receiver tank described as the prior art will be described using the same reference numerals.
　本発明のレシーバタンク１０は，軸線方向を上下方向とする略円筒状の圧力容器であるレシーバタンク本体１０’の内部上方に案内板１２を取り付けて，レシーバタンク本体１０’の内壁１１と案内板１２間に圧縮気体の誘導流路２０を形成し，この誘導流路２０に圧縮機本体３０からの圧縮気体を導入する導入管１４を設けると共に，レシーバタンク本体１０’内に貯留された冷却油を排出する排油口１５，油分の除去された圧縮気体を排出する排気口１６を設けた構成である点，及び，前記案内板１２の下端縁１２ｄとレシーバタンク本体１０’の内壁１１間を，前記誘導流路２０の底面を成す底板１９で覆っている点は，図７～９を参照して説明した従来のレシーバタンク１０と同様の構成である。 The receiver tank 10 of the present invention has a guide plate 12 attached to an upper part of a receiver tank body 10 ', which is a substantially cylindrical pressure vessel having an axial direction in the vertical direction, and an inner wall 11 and a guide plate of the receiver tank body 10'. 12, a guide channel 20 for compressed gas is formed, an introduction pipe 14 for introducing the compressed gas from the compressor body 30 is provided in the guide channel 20, and cooling oil stored in the receiver tank body 10 ′ is stored. Between the lower end edge 12d of the guide plate 12 and the inner wall 11 of the receiver tank main body 10 ′, and the exhaust port 16 for discharging the compressed gas from which oil has been removed. The point covered with the bottom plate 19 forming the bottom surface of the guide channel 20 is the same as that of the conventional receiver tank 10 described with reference to FIGS.
　なお，図２に示す実施形態に記載の構成において，前述の案内板１２の平面視における形状，及び導入管１４の配置は，図１０に従来技術として示したレシーバタンク１０と同様の構成としているが，この構成に代え，図８に示した従来のレシーバタンク１０と同様，案内板１２の一端１２ａ側を，レシーバタンク本体１０’の径方向に配置された端板１７で塞いだ構成としても良く，また，導入管１４を図８に示したようにレシーバタンク本体１０’の径方向を長さ方向として取り付けるものとしても良い。 In the configuration described in the embodiment shown in FIG. 2, the shape of the guide plate 12 in plan view and the arrangement of the introduction pipe 14 are the same as those of the receiver tank 10 shown as the prior art in FIG. However, instead of this configuration, similarly to the conventional receiver tank 10 shown in FIG. 8, the one end 12a side of the guide plate 12 may be closed with the end plate 17 arranged in the radial direction of the receiver tank body 10 ′. Alternatively, the introduction pipe 14 may be attached with the radial direction of the receiver tank body 10 'as the length direction as shown in FIG.
　もっとも，誘導流路２０の出口２１を出て旋回する圧縮気体流が，前述の端板１７に衝突してその流動が妨げられることのないようにするために，この端板１７に代えて，図９及び図１０を参照して説明した案内板１２同様，レシーバタンク本体１０’の内壁に前記案内板１２の一端１２ａを接触させると共に，案内板１２の前記一端１２ａから他端１２ｂ側に向かう少なくとも所定の長さ範囲（図示の例では１２ａから１２ｃの範囲）にレシーバタンク本体１０’の内壁との間隔を徐々に拡大する形状の傾斜部１２１を設けるものとすることが好ましい。 However, in order to prevent the compressed gas flow swirling out of the outlet 21 of the guide channel 20 from colliding with the end plate 17 and preventing its flow, the end plate 17 is replaced with Similar to the guide plate 12 described with reference to FIGS. 9 and 10, the one end 12a of the guide plate 12 is brought into contact with the inner wall of the receiver tank body 10 ′ and the one end 12a of the guide plate 12 is directed toward the other end 12b. It is preferable to provide an inclined portion 121 having a shape that gradually increases the distance from the inner wall of the receiver tank main body 10 'in at least a predetermined length range (in the illustrated example, a range from 12a to 12c).
　また，誘導流路２０に沿って旋回する流れを生じ易くすべく，平面視における前記導入管１４の幅方向における一辺１４ａが，前記レシーバタンク本体１０’の外壁に接する接線Ｔと平行でかつ該接線Ｔとの間隔τが可能な限り小さくなるよう前記レシーバタンク本体１０’に取り付けることが好ましい（図２参照）。 Further, in order to easily generate a swirling flow along the guide flow path 20, one side 14a in the width direction of the introduction pipe 14 in a plan view is parallel to a tangent line T in contact with the outer wall of the receiver tank body 10 'and It is preferable that the receiver tank body 10 'is attached so that the interval τ with the tangent line T is as small as possible (see FIG. 2).
　このようにして，レシーバタンク本体１０’の内壁との間隔が閉塞された案内板１２の一端１２ａ側から，レシーバタンク本体１０’の内壁１１間の間隔を塞ぐこと無く開放してある他端１２ｂ側，すなわち誘導流路２０の出口２１側に向かって，圧縮気体の旋回流が生じるように構成されている点においても，図７～図１０を参照して説明したレシーバタンク１０と同様である。 In this way, the other end 12b opened from the one end 12a side of the guide plate 12 whose distance from the inner wall of the receiver tank body 10 'is closed without closing the distance between the inner walls 11 of the receiver tank body 10'. It is the same as the receiver tank 10 described with reference to FIGS. 7 to 10 in that the swirling flow of the compressed gas is generated toward the side, that is, toward the outlet 21 of the guide channel 20. .
　なお，図１及び図２において，符号１３は冷却油の二次分離を行うためのフィルタエレメントであり，図示の実施形態にあってはこのフィルタエレメント１３をレシーバタンク本体１０’の上蓋１８の中央に形成された排気口１６に連通させて前記案内板１２の内周側におけるレシーバタンク本体１０’内に収容配置することにより，フィルタエレメント１３を通過して冷却油の二次分離が行われた圧縮気体のみ排気口１６を介してレシーバタンク本体１０’外に排出できるように構成している点でも，図７～１０を参照して説明した従来のレシーバタンク１０と同様の構成である。 1 and 2, reference numeral 13 denotes a filter element for performing secondary separation of the cooling oil. In the illustrated embodiment, this filter element 13 is connected to the center of the upper cover 18 of the receiver tank body 10 '. The cooling oil is secondarily separated through the filter element 13 by being disposed in the receiver tank main body 10 'on the inner peripheral side of the guide plate 12 in communication with the exhaust port 16 formed in The configuration is the same as that of the conventional receiver tank 10 described with reference to FIGS. 7 to 10 in that only compressed gas can be discharged to the outside of the receiver tank body 10 ′ through the exhaust port 16.
　もっとも，冷却油の二次分離は，図１，２に示す構成に代え，例えば図３に示すように油分離用のフィルタエレメント１３を備えた油分離器１３’をレシーバタンク本体１０’外に取り付け，この油分離器１３’に対してレシーバタンク本体１０’内で開口する排気口１６を介して冷却油が一次分離された後の圧縮気体を導入して冷却油の二次分離を行うものとしても良い。 However, the secondary separation of the cooling oil is replaced with the configuration shown in FIGS. 1 and 2, and for example, as shown in FIG. 3, an oil separator 13 ′ having a filter element 13 for oil separation is placed outside the receiver tank body 10 ′. Attaching and introducing the compressed gas after the cooling oil is primarily separated through the exhaust port 16 opened in the receiver tank main body 10 ′ to the oil separator 13 ′ to perform secondary separation of the cooling oil It is also good.
　この排気口１６の形成位置は，図１に示すようにレシーバタンク本体１０’の上蓋１８中央に設ける構成の他，図３に示すようにレシーバタンク本体１０’の側壁を貫通してレシーバタンク本体１０’内に挿入された管路の開口端を排気口１６とする等，レシーバタンク本体１０’の中央上端側において開口するものであれば各種の構成を採用することができ，レシーバタンク本体１０’内に収容された油分離用のフィルタエレメント１３をこのようにして形成された排気口１６に連通し，または，レシーバタンク本体１０’外に配置された油分離器１３’をこれらの排気口１６に連通する。 As shown in FIG. 1, the exhaust port 16 is formed at the center of the upper lid 18 of the receiver tank body 10 'as shown in FIG. 1, or through the side wall of the receiver tank body 10' as shown in FIG. Various configurations can be adopted as long as the opening at the center upper end side of the receiver tank body 10 ′ is opened at the center upper end side of the receiver tank body 10 ′, for example, the opening end of the pipe line inserted into 10 ′ is the exhaust port 16. 'The oil separating filter element 13 accommodated in the inside communicates with the exhaust port 16 formed in this way, or the oil separator 13' arranged outside the receiver tank body 10 'is connected to these exhaust ports. 16 communicates.
　以上のように構成されたレシーバタンク１０において，本発明のレシーバタンク１０にあっては，前述の案内板１２の下端縁１２ｄを，一端１２ａ側から他端１２ｂ側に向かって徐々に下方に延長した構成とした点で，案内板１２の下端縁１２ｄが一定の高さに形成されている従来のレシーバタンクと異なる。 In the receiver tank 10 configured as described above, in the receiver tank 10 of the present invention, the lower end edge 12d of the guide plate 12 is gradually extended downward from the one end 12a side toward the other end 12b side. This is different from the conventional receiver tank in which the lower end edge 12d of the guide plate 12 is formed at a constant height.
　本発明のレシーバタンク１０では，案内板１２の下端縁を前述のように構成したことにより，この案内板１２の下端縁１２ｄと，レシーバタンク本体１０’の内壁１１間を底板１９で塞ぐことで，誘導流路２０には案内板１２の一端１２ａ側から他端１２ｂ側に向かって下向きに傾斜する底面が形成されたものとなっていて、前記誘導流路２０の断面積が出口に向かって徐々に拡大する。 In the receiver tank 10 of the present invention, since the lower end edge of the guide plate 12 is configured as described above, the bottom plate 19 blocks the gap between the lower end edge 12d of the guide plate 12 and the inner wall 11 of the receiver tank body 10 '. The guide channel 20 has a bottom surface inclined downward from the one end 12a side to the other end 12b side of the guide plate 12, and the cross-sectional area of the guide channel 20 is directed toward the outlet. Gradually expand.
　案内板１２の下端縁１２ｄの高さは，図１及び図２に示したようにレシーバタンク本体１０’内に油分離用のフィルタエレメント１３を収容した構成にあっては，前述した誘導流路２０の出口２１における前記案内板１２の下端位置を，フィルタエレメント１３の下端位置よりも低い位置に設け，誘導流路２０の出口２１を出た油滴がフィルタエレメント１３に導入され難くすることが好ましい。 As shown in FIGS. 1 and 2, the height of the lower edge 12d of the guide plate 12 is the above-described guide channel in the configuration in which the filter element 13 for oil separation is accommodated in the receiver tank body 10 ′. The lower end position of the guide plate 12 at the outlet 21 of the 20 is provided at a position lower than the lower end position of the filter element 13, so that the oil droplets exiting the outlet 21 of the guide channel 20 are difficult to be introduced into the filter element 13. preferable.
　図１に示す実施形態にあっては，この案内板１２の一端１２ａ側における下端縁１２ｄについてもフィルタエレメント１３の下端位置よりも低い位置に設け，案内板１２の下端縁１２ｄ全体がフィルタエレメント１３の下端位置よりも低い位置となるように形成している。 In the embodiment shown in FIG. 1, the lower end edge 12 d on the one end 12 a side of the guide plate 12 is also provided at a position lower than the lower end position of the filter element 13, and the entire lower end edge 12 d of the guide plate 12 is the filter element 13. It forms so that it may become a position lower than the lower end position.
　このように構成された案内板１２の下端縁１２ｄとレシーバタンク本体１０’の内壁１１間を塞ぐ前述の底板１９は，図１に示す実施形態にあっては幅方向（レシーバタンク本体の径方向）において同一高さとなるように構成しているが，この底板１９は，図５に示すように，案内板１２の下端縁１２ｄ側から，レシーバタンク本体１０’の内壁１１側に向かって下向きに傾斜するものとしても良い。 In the embodiment shown in FIG. 1, the above-described bottom plate 19 that closes the gap between the lower end edge 12d of the guide plate 12 configured in this way and the inner wall 11 of the receiver tank main body 10 ′ has a width direction (the radial direction of the receiver tank main body). 5), the bottom plate 19 faces downward from the lower end edge 12d side of the guide plate 12 toward the inner wall 11 side of the receiver tank body 10 ', as shown in FIG. It may be inclined.
　また，底板１９の前記レシーバタンク本体１０’の内壁１１と接触する縁の部分には，図６に示すように切欠２２を設け，底板１９上を移動する冷却油がこの切欠２２を介して下方に落下するように構成しても良い。 Further, as shown in FIG. 6, a notch 22 is provided in an edge portion of the bottom plate 19 that contacts the inner wall 11 of the receiver tank body 10 ′, and cooling oil moving on the bottom plate 19 moves downward through the notch 22. You may comprise so that it may fall.
作用等
　以上のように構成されたレシーバタンク１０に対し，導入管１４を介して圧縮機本体より冷却油との気液混合流体として吐出された圧縮気体を導入すると，この圧縮気体は前述の導入管１４を介して案内板１２とレシーバタンク本体１０’の内壁１１間に形成された誘導流路２０内に導入される。 When the compressed gas discharged from the compressor main body as a gas-liquid mixed fluid with the cooling oil is introduced into the receiver tank 10 configured as described above via the introduction pipe 14, the compressed gas is introduced as described above. It is introduced into a guide channel 20 formed between the guide plate 12 and the inner wall 11 of the receiver tank body 10 ′ via the pipe 14.
　誘導流路２０内に導入された圧縮気体中の冷却油は，気体中において重量物であるために誘導流路２０内で生じた圧縮気体流より分離して落下し，誘導流路２０の底面を成す前述した底板１９上に到達して，この底板１９上を伝って，圧縮気体流と共に誘導流路の出口に向かって移動する。 Since the cooling oil in the compressed gas introduced into the induction channel 20 is heavy in the gas, the cooling oil is separated from the compressed gas flow generated in the induction channel 20 and falls, and the bottom surface of the induction channel 20 It reaches the above-mentioned bottom plate 19 forming the above, travels on the bottom plate 19 and moves toward the outlet of the induction channel together with the compressed gas flow.
　誘導流路２０の底板１９は，誘導流路２０の出口２１に向かって下向きに傾斜していることから，底板１９上に落下した冷却油は底板１９上を円滑に移動すると共に，この底板１９の傾斜に案内されて誘導流路２０の出口２１より下向きに排出される。 Since the bottom plate 19 of the guide channel 20 is inclined downward toward the outlet 21 of the guide channel 20, the cooling oil dropped on the bottom plate 19 moves smoothly on the bottom plate 19 and the bottom plate 19. And is discharged downward from the outlet 21 of the guide channel 20.
　また，前述のように，誘導流路２０はレシーバタンク本体１０’の内壁と案内板１２との間に形成された円弧状の形状を有することから，前述した傾斜によって前記底板１９上を流れる冷却油の流速が上昇すると，この冷却油が受ける遠心力が強まりレシーバタンク本体１０’の内壁１１面に対して押しつけられる方向の力が加わる。その結果，冷却油は誘導流路２０の出口２１を出た後もレシーバタンク本体１０’の内壁１１に沿って油面に到達し，レシーバタンク本体１０’内を流れる圧縮気体流によって飛散され難く，また、前記誘導流路２０の断面積が出口に向かって徐々に拡大することから、前記誘導流路２０出口の圧縮気体の流速が低減され、圧縮気体流によって前記誘導流路２０出口で冷却油が飛散し難くなっている。その結果，飛散した冷却油が圧縮気体流と共に排気口１６や排気口１６に連通されたフィルタエレメント１３に導入され難いものとなっている。 Further, as described above, since the guide channel 20 has an arc shape formed between the inner wall of the receiver tank body 10 'and the guide plate 12, the cooling that flows on the bottom plate 19 due to the inclination described above. When the oil flow rate is increased, the centrifugal force received by the cooling oil is increased, and a force in a direction to be pressed against the inner wall 11 surface of the receiver tank body 10 ′ is applied. As a result, the cooling oil reaches the oil surface along the inner wall 11 of the receiver tank body 10 ′ even after exiting the outlet 21 of the guide channel 20, and is hardly scattered by the compressed gas flow flowing in the receiver tank body 10 ′. In addition, since the cross-sectional area of the guide channel 20 gradually increases toward the outlet, the flow velocity of the compressed gas at the outlet of the guide channel 20 is reduced, and cooling is performed at the outlet of the guide channel 20 by the compressed gas flow. Oil is difficult to splash. As a result, the scattered cooling oil is difficult to be introduced into the exhaust port 16 and the filter element 13 communicated with the exhaust port 16 together with the compressed gas flow.
　特に図５に示すように，底板１９を案内板１２の下端縁１２ｄ側からレシーバタンク本体１０’の内壁１１側に向かって下向きに傾斜させた構造とした場合には，前述したように遠心力によって冷却油がレシーバタンク本体１０’の内壁１１側に押し付ける方向の力が加わるだけでなく，この底板１９の傾斜によってもレシーバタンク本体１０’の内壁１１側に押し付けられた状態で出口２１に向かって誘導流路２０内を流れることから，誘導流路２０の出口２１を出た後もレシーバタンク本体１０’の内壁１１に沿った流れが更に生じ易くなり，その結果，誘導流路２０の出口２１を出る冷却油が更に飛散し難いものとなっている。 In particular, as shown in FIG. 5, when the bottom plate 19 is inclined downward from the lower end edge 12d side of the guide plate 12 toward the inner wall 11 side of the receiver tank main body 10 ', centrifugal force is applied as described above. This not only applies a force in the direction in which the cooling oil is pressed against the inner wall 11 side of the receiver tank body 10 ', but also is directed toward the outlet 21 while being pressed against the inner wall 11 side of the receiver tank body 10' by the inclination of the bottom plate 19. Therefore, the flow along the inner wall 11 of the receiver tank main body 10 ′ is more likely to occur even after exiting the outlet 21 of the guide channel 20, and as a result, the outlet of the guide channel 20. The cooling oil exiting 21 is more difficult to scatter.
　また，図５に示したように案内板１２の下端縁１２ｄ側からレシーバタンク本体１０’の内壁１１側に向かって下向きに傾斜させた構造に代え，又は，この傾斜構造と共に，図６に示すようにレシーバタンク本体１０’の内壁１１との接触側の縁において前述の底板１９に切欠２２を設けた構成にあっては，この切欠２２を介して下向きに吹き出す圧縮気体流と共に，誘導流路２０内を流れる冷却油を下向きに落下させることができる結果，冷却油を排気口１６やこの排気口１６と連通するフィルタエレメント１３より更に遠ざける方向に流動させることができ，その結果，より一層の油分離効率の向上が得られ，フィルタエレメント１３の負担を軽減することができるものとなっている。 Moreover, it replaces with the structure inclined downward toward the inner wall 11 side of receiver tank main body 10 'from the lower end edge 12d side of the guide plate 12 as shown in FIG. 5, or is shown in FIG. 6 with this inclined structure. As described above, in the configuration in which the notch 22 is provided in the bottom plate 19 at the edge of the receiver tank body 10 ′ on the contact side with the inner wall 11, along with the compressed gas flow blown downward through the notch 22, the guide channel As a result of the cooling oil flowing through 20 being allowed to fall downward, the cooling oil can be caused to flow in a direction further away from the exhaust port 16 and the filter element 13 communicating with the exhaust port 16, and as a result The oil separation efficiency can be improved, and the load on the filter element 13 can be reduced.
　以上のように，本発明の油冷式圧縮機のレシーバタンク１０によれば，図７～１０を参照した説明した従来のレシーバタンク１０と同様，案内板１２を設けたことに伴う油分離性能の向上が得られただけでなく，前述したように底板１９を所定の方向に傾斜させたことにより，更なる油分離効率の向上を得ることができ，油冷式圧縮機のレシーバタンク１０を小型化して，圧縮機全体をコンパクトに形成することが可能となった。 As described above, according to the receiver tank 10 of the oil-cooled compressor of the present invention, the oil separation performance associated with the provision of the guide plate 12 is the same as the conventional receiver tank 10 described with reference to FIGS. As described above, the bottom plate 19 is inclined in a predetermined direction as described above, so that further improvement in oil separation efficiency can be obtained, and the receiver tank 10 of the oil-cooled compressor can be installed. As a result of downsizing, the entire compressor can be made compact.
　しかも，一次分離で除去できずに圧縮気体中に残る油分を二次分離するための，油分離用のフィルタエレメントに導入される油分を可及的に減少させることができた結果，フィルタエレメントの寿命が延び，フィルタエレメントの交換に伴うメンテナンスの労力や，交換費用を低減することができた。 Moreover, the oil component introduced into the oil separation filter element for secondary separation of the oil component that cannot be removed by primary separation and remains in the compressed gas can be reduced as much as possible. The service life has been extended, and the maintenance labor and replacement cost associated with the filter element replacement have been reduced.
　したがって，以下の特許請求の範囲は，ここに開示された特定の手段のみで構成された器具，機器，機械，装置もしくは，工程又は方法を指すものではない。前述の特許請求の範囲は，この画期的な発明の核心又は本質を保護することが意図される。本発明は明らかに新規性を有し，且つ有用である。 Therefore, the following claims do not refer to an instrument, device, machine, device, or process or method configured only by the specific means disclosed herein. The foregoing claims are intended to protect the heart or essence of this groundbreaking invention. The present invention is clearly novel and useful.
　更に，本発明が成された時点で，本発明は当業者にとって従来技術を参照して自明では無く，又，本発明の特質を鑑みると，本発明は，当該技術分野において明らかに先駆的な発明である。法的な問題としては，本発明の核心を保護するために，以下の特許請求の範囲は極めて広く解釈されなければならない。 Further, at the time the present invention was made, the present invention is not obvious to those skilled in the art with reference to the prior art, and in view of the nature of the present invention, the present invention is clearly pioneering in the art. It is an invention. As a legal matter, the following claims should be construed very broadly to protect the core of the invention.
　したがって，前述され上記の記載から明らかにされる目的は効率的に達成され，前記構成において，本発明の範囲から逸脱することなく，ある程度の変更が成し得るので，前述の記載又は添付図面に含まれる全ての内容は，限定的な意味ではなく例示的に解釈されることが意図される。以下の特許請求の範囲は，ここに記載する本発明の包括的且つ固有の特徴の全てを含むことが意図され, 言語の問題として，本発明の範囲についての他の全ての表現は,特許請求の範囲に属する，と言えることを理解されたい。 Accordingly, the objects described above and clarified from the above description can be efficiently achieved, and the configuration can be modified to some extent without departing from the scope of the present invention. All content contained is intended to be construed in an illustrative rather than a limiting sense. The following claims are intended to include all of the generic and specific features of the invention described herein, and, as a language issue, all other expressions of the scope of the invention are claimed. It should be understood that it can be said that it belongs to the range.
１ 油冷式圧縮機
１０ レシーバタンク
１０’ レシーバタンク本体
１１ 内壁（レシーバタンク本体の）
１２ 案内板
１２ａ 一端（案内板の）
１２ｂ 他端（案内板の）
１２ｃ 境界（傾斜部と平行部の）
１２ｄ　下端縁（案内板の）
１２１ 傾斜部
１３ フィルタエレメント
１３’　油分離器
１４ 導入管
１４ａ　一辺（導入管１４の）
１５ 排油口（冷却油の）
１６ 排気口（圧縮気体の）
１７ 端板
１８ 上蓋
１９　底板
２０ 誘導流路
２１ 出口（誘導流路の）
２２ 切欠
３０ 圧縮機本体
３１ 給油口
３２ 吐出口
４１ 給油配管
Ｔ レシーバタンク本体の外周に対する接線
τ Ｃ－Ｔ間の間隔 1 Oil-cooled compressor 10 Receiver tank 10 'Receiver tank body 11 Inner wall (of receiver tank body)
12 Guide plate 12a One end (of the guide plate)
12b The other end (of the guide plate)
12c boundary (inclined part and parallel part)
12d Lower edge (of the guide plate)
121 Inclined part 13 Filter element 13 'Oil separator 14 Introducing pipe 14a One side (introducing pipe 14)
15 Oil outlet (for cooling oil)
16 Exhaust port (for compressed gas)
17 End plate 18 Top lid 19 Bottom plate 20 Guide channel 21 Exit (of the guide channel)
22 Notch 30 Compressor body 31 Refueling port 32 Discharge port 41 Refueling piping T Distance between tangent lines τ CT to the outer periphery of the receiver tank body

Claims (4)

  1. 　軸線方向を上下方向と成す略円筒状の圧力容器であるレシーバタンク本体の内部上方に，長手方向に湾曲した形状の案内板を取り付けて，前記レシーバタンク本体の内壁と前記案内板との間に誘導流路を形成し，圧縮機本体から冷却油と共に吐出された圧縮気体を導入する導入管を前記誘導流路に連通するよう取り付けると共に，前記案内板の内周側において前記レシーバタンク本体の上端側に，前記レシーバタンク本体外に圧縮気体を排出する排気口を設けたレシーバタンクにおいて，
    　前記案内板の下端縁を，該案内板の長手方向における一端側から他端側に向かって徐々に下方に延長し，前記案内板の下端縁と，前記レシーバタンク本体の内壁間を底板で覆って，前記案内板の前記一端側から前記他端側に向かって下向きに傾斜する前記誘導流路の底面を形成すると共に，
    　前記案内板の前記一端と前記レシーバタンク本体の内壁間を閉塞すると共に，前記案内板の前記他端と前記レシーバタンク本体の内壁間を開放して前記誘導流路の出口を形成し，
    　前記導入管を，前記案内板の前記一端側において前記誘導流路に連通したことを特徴とする油冷式圧縮機のレシーバタンク。     A guide plate having a curved shape in the longitudinal direction is attached to the upper side of the receiver tank main body, which is a substantially cylindrical pressure vessel whose axial direction is the vertical direction, between the inner wall of the receiver tank main body and the guide plate. An introduction pipe that forms a guide channel and introduces compressed gas discharged together with cooling oil from the compressor body is attached to communicate with the guide channel, and an upper end of the receiver tank body on the inner peripheral side of the guide plate In the receiver tank provided with an exhaust port for discharging compressed gas outside the receiver tank body on the side,
    The lower end edge of the guide plate is gradually extended downward from one end side to the other end side in the longitudinal direction of the guide plate, and the bottom plate covers the space between the lower end edge of the guide plate and the inner wall of the receiver tank body. And forming the bottom surface of the guide channel inclined downward from the one end side to the other end side of the guide plate,
    Closing between the one end of the guide plate and the inner wall of the receiver tank body, and opening the other end of the guide plate and the inner wall of the receiver tank body to form an outlet of the guide channel,
    A receiver tank of an oil-cooled compressor, wherein the introduction pipe communicates with the guide channel on the one end side of the guide plate.
  2. 　前記排気口に連通するフィルタエレメントを前記レシーバタンク本体内で，且つ，前記案内板の内周側に収容すると共に，前記フィルタエレメントの下端位置に対して，前記誘導流路の出口における前記案内板の下端位置を低位置に配置したことを特徴とする請求項１記載の油冷式圧縮機のレシーバタンク。 The filter element communicating with the exhaust port is accommodated in the receiver tank body and on the inner peripheral side of the guide plate, and the guide plate at the outlet of the guide channel with respect to the lower end position of the filter element The receiver tank of the oil-cooled compressor according to claim 1, wherein the lower end position of the oil-cooled compressor is arranged at a low position.
  3. 　前記底板を，前記案内板の下端縁側から，前記レシーバタンク本体の内壁側に向かって下向きに傾斜させたことを特徴とする請求項１又は２記載の油冷式圧縮機のレシーバタンク。 3. The receiver tank of an oil-cooled compressor according to claim 1, wherein the bottom plate is inclined downward from the lower end edge side of the guide plate toward the inner wall side of the receiver tank body.
  4. 　前記レシーバタンク本体の内壁側における前記底板の縁に切欠を設けたことを特徴とする請求項１～３いずれか１項記載の油冷式圧縮機のレシーバタンク。 The receiver tank of the oil-cooled compressor according to any one of claims 1 to 3, wherein a notch is provided in an edge of the bottom plate on the inner wall side of the receiver tank main body.
PCT/JP2010/066543 2010-09-24 2010-09-24 Receiver tank for oil-cooled compressor WO2012039056A1 (en)

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WO2023041313A1 (en) * 2021-09-15 2023-03-23 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Liquid separation device for a compressor system, coarse separator for such a liquid separation device, and liquid separation system

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