JP6380154B2 - Cleaning nozzle and cleaning device - Google Patents

Description

  The present invention relates to a cleaning nozzle and a cleaning apparatus using the same.

2. Description of the Related Art Conventionally, a cleaning apparatus that cleans a work by injecting a fluid such as steam or cleaning liquid onto the work, and a cleaning nozzle used in the cleaning apparatus are known.
The cleaning nozzle described in Patent Document 1 cleans the work by injecting a cleaning liquid pressurized by compressed air from the injection port of the pipe member toward the work. Further, this cleaning nozzle accelerates the cleaning liquid ejected from the ejection port by adopting a Laval nozzle shape on the upstream side of the ejection port of the pipe member.

JP 2000-317410 A

However, in the cleaning nozzle described in Patent Document 1, the pipe member is formed of a metal such as stainless steel. Therefore, instead of injecting the cleaning liquid from the cleaning nozzle, it is conceivable that when the steam is injected, the steam dissipates heat through the pipe member. When the temperature of the steam decreases, the steam condenses and its volume decreases, and the injection pressure decreases. For this reason, when the cleaning nozzle described in Patent Document 1 is used for jetting steam, the cleaning ability may be reduced.
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a cleaning nozzle capable of enhancing the cleaning capability and a cleaning device using the same.

1st invention is the nozzle for washing | cleaning used for the washing | cleaning apparatus which injects a fluid to a workpiece | work, and is provided with a pipe member and a hollow heat insulation layer. The tube member has a fluid flow path that communicates a supply port to which a fluid is supplied and an ejection port that ejects the fluid. The heat insulating layer is formed between the inner wall forming the fluid flow path and the outer wall of the pipe member. The pipe member includes a main pipe having a main flow path extending from the supply port, and a plurality of branch pipes having a plurality of branch flow paths leading from the main flow path to the plurality of injection ports. The main pipe and the branch pipe are integrally formed. The heat insulating layer is formed between the inner wall forming the main flow path and the outer wall of the main pipe, and between the inner wall forming the branch flow path and the outer wall of the branch pipe.
Thereby, since the temperature fall of the fluid which flows through a fluid flow path is suppressed, the nozzle for washing | cleaning can improve the washing | cleaning capability by the high pressure injection of a fluid.

The second invention is an invention of a cleaning device. The cleaning device includes the cleaning nozzle, the housing, the fluid supply means, and the drive means of the first invention. The housing has a cleaning chamber in which the workpiece can move, and an injection port of the cleaning nozzle is inserted into the cleaning chamber. The fluid supply means supplies fluid to the supply port of the tube member. The driving means can drive the tube member in a direction intersecting with the moving direction of the work moving through the cleaning chamber.
Thus, the cleaning device can reliably clean the workpiece by ejecting the fluid from the ejection port toward the workpiece while moving the pipe member in a direction crossing the moving direction of the workpiece.

It is a block diagram of the washing | cleaning apparatus by 1st Embodiment of this invention. It is sectional drawing of the II-II line of FIG. It is a perspective view of the nozzle for washing by a 1st embodiment. It is sectional drawing of the IV-IV line of FIG. It is sectional drawing of the VV line | wire of FIG.2 and FIG.4. FIG. 5 is an arrow view in the VI direction of FIG. 4. It is an enlarged view of the VII part of FIG. It is sectional drawing of the nozzle for washing | cleaning by 2nd Embodiment of this invention. It is an enlarged view of the IX part of FIG. It is a bottom view of the nozzle for washing by a 3rd embodiment of the present invention. It is an enlarged view of the XI part of FIG.

  A plurality of embodiments of the present invention will be described with reference to the drawings. Note that, in a plurality of embodiments, substantially the same configuration is denoted by the same reference numeral in the drawings, and description thereof is omitted. Moreover, in each drawing, when substantially the same configuration is present at a plurality of locations, only a part thereof is denoted by a reference numeral.

[First Embodiment]
A first embodiment of the present invention is shown in FIGS. The cleaning apparatus 1 of the present embodiment cleans the workpiece 2 with steam sprayed from the cleaning nozzle 10. The steam of this embodiment corresponds to an example of “fluid” described in the claims.
Hereinafter, the “configuration of the cleaning device”, “configuration of the cleaning nozzle”, and “effect” will be described in this order.

(Structure of the cleaning device)
As shown in FIGS. 1 and 2, the cleaning device 1 includes a housing 3, a cleaning nozzle 10, a fluid supply unit 4, driving units 5 and 6, and the like.
The workpiece 2 to be cleaned by the cleaning device 1 of this embodiment is inserted into a cleaning chamber 7 formed inside the housing 3. The workpiece 2 moves in the cleaning chamber 7 in the direction of arrow A in FIG. In the present embodiment, examples of the workpiece 2 include a heat radiation fin obtained by bending a metal plate at a short pitch. However, the cleaning apparatus 1 is not limited to the workpiece 2 and can clean various workpieces.

The cleaning nozzles 10 are arranged on one side and the other side of the workpiece 2 in the plate thickness direction. In the present embodiment, since the two cleaning nozzles 10 have the same configuration, only one cleaning nozzle 10 will be described.
As shown in FIG. 3, the cleaning nozzle 10 includes a pipe member 11, a flange portion 20, a first attachment portion 30, a second attachment portion 40, and the like.
The pipe member 11 includes a main pipe 13 extending from the supply port 12 and two branch pipes 14 branched from the main pipe 13. An injection port 15 is formed at the end of the branch pipe 14 opposite to the main pipe 13. The flange portion 20, the first attachment portion 30, and the second attachment portion 40 are fixed to the branch pipe 14.

As shown in FIGS. 1 and 2, the pipe member 11 injects high-pressure steam supplied from the fluid supply means 4 to the supply port 12 from the injection port 15 toward the workpiece 2.
The driving means 5 and 6 are fixed to the first mounting portion 30 and the second mounting portion 40 of the cleaning nozzle 10 by bolts or the like (not shown). In FIG.1 and FIG.2, some drive means 5 and 6 are typically shown with the broken line. The driving means 5 and 6 are driven in synchronization with the direction of the arrow B in FIGS. The direction of this arrow B is a direction that intersects the direction of movement of the workpiece 2 that moves in the cleaning chamber 7. The tube member 11 is driven by the drive means 5 and 6 and reciprocates in the direction of arrow B within the range of the opening 8 of the housing 3.

  The flange portion 20 closes the opening 8 provided in the housing 3. The branch pipe 14 located closer to the injection port 15 than the flange portion 20 is inserted into the cleaning chamber 7 of the housing 3. The flange portion 20 is formed so as to extend from the opening 8 of the housing 3 to both sides in the direction of the arrow B, which is larger than the distance that the pipe member 11 reciprocates in the direction of the arrow B. Therefore, when the pipe member 11 reciprocates in the direction of the arrow B, the flange portion 20 closes the opening 8 of the housing 3 and suppresses vapor from leaking from the cleaning chamber 7.

  The cleaning apparatus 1 injects steam from the injection port 15 of the cleaning nozzle 10 toward the work 2 with respect to the work 2 moving in the direction of arrow A in the cleaning chamber 7 of the housing 3. At this time, the drive means 5 and 6 reciprocate the tube member 11 in the direction of arrow B. Thereby, steam is sprayed to every corner of the work 2, and the work 2 is reliably cleaned.

(Structure of cleaning nozzle)
Next, the cleaning nozzle 10 will be described in detail with reference to FIGS.
As described above, the cleaning nozzle 10 includes the pipe member 11 having the main pipe 13 and the two branch pipes 14, the first attachment portion 30, the second attachment portion 40, and the flange portion 20. The main pipe 13, the branch pipe 14, the first attachment portion 30, the second attachment portion 40, and the flange portion 20 are integrally formed. The cleaning nozzle 10 can be formed by a metal 3D printer.

The pipe member 11 has a fluid flow path 16 that communicates the supply port 12 and the injection port 15 inside thereof. The fluid flow path 16 includes a main flow path 17 extending from the supply port 12 and two branch flow paths 18 communicating from the main flow path 17 to the two injection ports 15. The main channel 17 is a channel formed inside the main tube 13, and the branch channel 18 is a channel formed inside the branch tube 14.
The main channel 17 and the plurality of branch channels 18 are smoothly connected. That is, the axis P of the main channel 17 and the axes Q1 and Q2 of the plurality of branch channels 18 intersect at an obtuse angle. Therefore, the pressure loss is reduced without the steam flowing from the main flow path 17 to the plurality of branch flow paths 18 being separated from the inner wall of the fluid flow path 16.

  As shown in FIG. 7, a Laval nozzle 19 is formed at a location located upstream of the injection port 15 in the branch flow path 18. That is, the cross-sectional area of the branch flow path 18 decreases at a predetermined position 191, and the cross-sectional area gradually increases with the curvature defined by the Laval nozzle toward the injection port 15. The Laval nozzle 19 accelerates the steam ejected from the ejection port 15.

  The cleaning nozzle 10 of the present embodiment includes a hollow heat insulating layer 50 formed between the outer wall of the pipe member 11 and the inner wall that forms the fluid flow path 16. The heat insulating layer 50 is continuously formed in the axial direction between the inner wall forming the main flow path 17 and the outer wall of the main pipe 13, and between the inner wall forming the branch flow path 18 and the outer wall of the branch pipe 14. The The heat insulating layer 50 has a plurality of partition walls 51 and a heat insulating space 52. As shown in FIGS. 5 and 6, the plurality of partition walls 51 are provided radially about the axes P, Q1 and Q2 of the fluid flow path 16. 4 and 7, the plurality of partition walls 51 extend in the axial direction of the fluid flow path 16 between the outer wall of the pipe member 11 and the inner wall of the fluid flow path 16.

  The heat insulating space 52 is a space formed between the plurality of partition walls 51 and the partition walls 51. As shown in FIGS. 6 and 7, the heat insulating space 52 opens at the end of the pipe member 11 in the axial direction. Thereby, when the pipe member 11 and the heat insulation layer 50 are manufactured by a metal 3D printer, the metal powder left in the heat insulation space 52 can be discharged from the opening at the end in the axial direction of the pipe member 11.

The first attachment portion 30 is connected to the two branch pipes 14 and extends in one direction in which the two branch pipes 14 are arranged. The first attachment portion 30 of the present embodiment corresponds to an example of an “attachment portion” described in the claims.
As shown in FIGS. 3 and 5, the first mounting portion 30 is provided on the opposite side of the arm portion 31 to the branch tube 14 and the prismatic arm portion 31 connected to the two branch tubes 14. And a plate portion 32. The arm portion 31 is a hollow member having a space 33 inside. The arm portion 31 has a hole 34 that communicates the inner space 33 with the outside air. When the first attachment portion 30 is formed by a metal 3D printer, the metal powder left in the space 33 inside the arm portion 31 can be discharged from the hole 34. The plate part 32 has a bolt hole 35 communicating with the plate thickness direction. A bolt (not shown) is inserted into the bolt hole 35, and the first attachment portion 30 is fixed to the driving means 5.
The second mounting portion 40 includes six cylindrical portions 41 and a connecting portion 42 that connects the cylindrical portions 41 to one branch pipe 14. Bolts (not shown) are inserted into the inner holes of the six cylindrical portions 41, and the second mounting portion 40 is fixed to the driving means 6.

As shown in FIGS. 3 and 4, the flange portion 20 is connected to the two branch pipes 14 and is formed perpendicular to the axes Q <b> 1 and Q <b> 2 of the two branch pipes 14. The flange portion 20 is a hollow member having a space 21 inside. The flange portion 20 has a hole 22 that communicates the inner space 21 with the outside air. When the flange portion 20 is formed by a metal 3D printer, the metal powder left in the space 21 inside the flange portion 20 can be discharged from the hole 22.
A concave groove portion 23 is provided on the outer periphery of the flange portion 20. A sealing member (not shown) is fitted into the concave groove 23. By the sealing member, the flange portion 20 can prevent the steam from leaking from the opening portion 8 of the housing 3 described above.

(Function and effect)
The cleaning nozzle 10 and the cleaning device 1 of the first embodiment have the following operational effects.
(1) In the first embodiment, a hollow heat insulating layer 50 is formed between the outer wall of the tube member 11 provided in the cleaning nozzle 10 and the inner wall forming the fluid flow path 16.
Thereby, since the temperature fall of the vapor | steam which flows through the fluid flow path 16 is suppressed, the reduction | decrease in the volume by vapor | steam condensation is suppressed. Therefore, the pressure drop of the steam is suppressed and the steam pressure ejected from the ejection port 15 is maintained. Therefore, the cleaning nozzle 10 can enhance the cleaning capability by high-pressure injection of steam.
Moreover, the nozzle 10 for washing | cleaning can make the mass of the pipe member 11 light by forming the hollow heat insulation layer 50. FIG. Therefore, the cleaning apparatus 1 including the cleaning nozzle 10 can increase the cleaning capability by increasing the moving speed of the cleaning nozzle 10 when cleaning the workpiece 2 while reciprocating the cleaning nozzle 10.

(2) In the first embodiment, the heat insulating layer 50 includes a plurality of partition walls 51 extending in the axial direction of the fluid flow path 16 between the outer wall of the pipe member 11 and the inner wall of the fluid flow path 16, and the partition walls 51. And a heat insulating space 52 formed between the partition wall 51 and the partition wall 51.
Thus, the cleaning nozzle 10 can increase the rigidity of the pipe member 11 by the plurality of partition walls 51.

(3) In the first embodiment, the plurality of partition walls 51 are provided radially around the axes P, Q1, and Q2 of the fluid flow path 16.
Thereby, the rigidity can be improved in the perimeter of the pipe member 11. FIG.

(4) In 1st Embodiment, the heat insulation space 52 is opened in the edge part of the axial direction of the pipe member 11. As shown in FIG.
Thereby, when the pipe member 11 and the heat insulation layer 50 are formed by a metal 3D printer, the metal powder left in the heat insulation space 52 can be discharged from the opening at the end in the axial direction of the pipe member 11.

(5) In the first embodiment, the pipe member 11 includes a plurality of main pipes 13 having a main flow path 17 extending from the supply port 12 and a plurality of branch flow paths 18 communicating from the main flow path 17 to the plurality of injection ports 15. And a branch pipe 14. The main pipe 13 and the plurality of branch pipes 14 are integrally formed. The heat insulating layer 50 is formed between the inner wall forming the main flow path 17 and the outer wall of the main pipe 13, and between the inner wall forming the branch flow path 18 and the outer wall of the branch pipe 14.
Thereby, the cleaning nozzle 10 can reliably suppress the temperature drop of the steam flowing through the main channel 17 and the plurality of branch channels 18.

(6) In the first embodiment, the main channel 17 and the plurality of branch channels 18 are smoothly connected.
As a result, the vapor flowing from the main flow path 17 through the plurality of branch flow paths 18 is prevented from peeling off from the inner wall of the flow path, so that the pressure loss of the steam is suppressed. Therefore, the cleaning nozzle 10 can enhance the cleaning ability with steam.

(7) In the first embodiment, the axis P of the main channel 17 and the axes Q1 and Q2 of the plurality of branch channels 18 intersect at an obtuse angle.
Thereby, the main flow path 17 and the some branch flow path 18 are connected smoothly, and it is prevented that the vapor | steam which flows through the some branch flow path 18 from the main flow path 17 peels from the inner wall of a flow path.

(8) In the first embodiment, the cleaning nozzle 10 includes the first mounting portion 30 to which the driving means 5 can be mounted. The first attachment portion 30 is a hollow member having a space 33 inside, and is formed integrally with the tube member 11.
It is possible to reduce the mass of the cleaning nozzle 10 by forming the first mounting portion 30 as a hollow member and further forming the first mounting portion 30 and the tube member 11 integrally. Therefore, when the cleaning apparatus 1 having the cleaning nozzle 10 cleans the workpiece 2 while moving the cleaning nozzle 10 by the driving means 5 and 6, the cleaning nozzle 10 is moved faster and the cleaning capability is increased. be able to.

(9) In the first embodiment, the cleaning nozzle 10 includes the flange portion 20. The flange portion 20 is a hollow member having a space 21 inside, and is formed integrally with the tube member 11.
By making the flange part 20 into a hollow member and forming the flange part 20 and the pipe member 11 integrally, the mass of the cleaning nozzle 10 can be reduced.

(10) In the first embodiment, a Laval nozzle 19 is formed on the upstream side of the injection port 15 of the pipe member 11.
Thereby, the steam injected from the injection port 15 can be accelerated.

(11) The cleaning device 1 of the first embodiment includes a cleaning nozzle 10, a housing 3, a fluid supply unit 4, and drive units 5 and 6. The housing 3 has a cleaning chamber 7 in which the workpiece 2 can move, and an injection port 15 of the cleaning nozzle 10 is inserted into the cleaning chamber 7. The fluid supply means 4 supplies high-pressure steam to the supply port 12 of the pipe member 11. The driving means 5 and 6 can drive the pipe member 11 in a direction intersecting the moving direction of the work 2 moving in the cleaning chamber 7.
Accordingly, the cleaning apparatus 1 ejects steam from the ejection port 15 of the cleaning nozzle 10 toward the work 2 while moving the cleaning nozzle 10 in a direction intersecting the moving direction of the work 2. 2 can be reliably washed.

[Second Embodiment]
A second embodiment of the present invention is shown in FIGS. In the cleaning nozzle 10 of the second embodiment, a plurality of partition walls 55 extend in the radial direction of the fluid flow path 16 between the outer wall of the pipe member 11 and the inner wall of the fluid flow path 16 and are formed in an annular shape. . The plurality of partition walls 55 are provided intermittently in the axial direction of the fluid flow path 16.
A heat insulating space 56 is formed between the partition wall 55 and the partition wall 55. The pipe member 11 has a hole 57 that allows the heat insulating space 56 and the outside air to communicate with each other. Therefore, when the pipe member 11 and the heat insulating layer 50 are formed by a metal 3D printer, the metal powder left in the heat insulating space 56 can be discharged from the hole 57.

In the second embodiment, the plurality of partition walls 55 extend in the radial direction of the fluid channel 16 between the outer wall of the pipe member 11 and the inner wall of the fluid channel 16, and intermittently in the axial direction of the fluid channel 16. Provided.
Thereby, the nozzle 10 for washing | cleaning can improve the rigidity of the pipe member 11 with the some partition wall 55. FIG.

[Third Embodiment]
A third embodiment of the present invention is shown in FIGS. In the third embodiment, the injection port 151 of the cleaning nozzle 10 has an elliptical cross section perpendicular to the axes Q1 and Q2 of the branch channel 18 in the fluid channel 16. The elliptical injection port 151 is formed such that the major axis direction thereof is parallel to the direction B in which the cleaning nozzle 10 reciprocates.
Thereby, the injection range of the steam injected from the injection port 151 can be expanded. Therefore, the cleaning nozzle 10 of the third embodiment can increase the cleaning capability.

[Other Embodiments]
(1) In the embodiment described above, the cleaning apparatus 1 ejects steam from the cleaning nozzle 10. On the other hand, in another embodiment, the cleaning apparatus 1 may inject a liquid or gas such as a cleaning agent from the cleaning nozzle 10 instead of the vapor.

  (2) In the above-described embodiment, the cleaning apparatus 1 has the cleaning nozzles 10 disposed on one side and the other side of the workpiece 2 in the plate thickness direction. On the other hand, in another embodiment, the cleaning apparatus 1 may arrange the cleaning nozzle 10 only on one side of the workpiece 2 in the plate thickness direction.

  (3) In the above-described embodiment, the pipe member 11 of the cleaning nozzle 10 has one main pipe 13 and two branch pipes 14. On the other hand, in another embodiment, the pipe member 11 of the cleaning nozzle 10 does not have the branch pipe 14, and is composed of only one main pipe 13, and steam is supplied from one injection port 15, 151. You may spray. Further, the pipe member 11 of the cleaning nozzle 10 may have three or more branch pipes 14 for one main pipe 13.

  (4) In the embodiment described above, the cleaning nozzle 10 includes the hollow heat insulating layer 50. On the other hand, in another embodiment, the cleaning nozzle 10 may insert a heat insulating material into the heat insulating spaces 52 and 56.

(5) In the above-described embodiment, the cleaning nozzle 10 is formed by a metal 3D printer. On the other hand, in other embodiments, the cleaning nozzle 10 may be formed by a resin 3D printer.
As described above, the present invention is not limited to the above-described embodiments. In addition to combining the above-described embodiments, the present invention can be implemented in various forms without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 ... Cleaning apparatus 10 ... Cleaning nozzle 11 ... Pipe member 12 ... Supply port 15, 151 ... Injection port 16 ... Fluid flow path 50 ... Heat insulation layer

Claims (14)

A cleaning nozzle used in a cleaning device for injecting a fluid onto a workpiece (2),
A pipe member (11) having a fluid flow path (16) communicating between a supply port (12) to which a fluid is supplied and an injection port (15, 151) for ejecting the fluid;
A heat insulating layer (50) that is formed between an inner wall that forms the fluid flow path and an outer wall of the pipe member, and that suppresses heat dissipation of the fluid flowing through the fluid flow path,
The pipe member includes a main pipe (13) having a main flow path (17) extending from the supply port, and a plurality of branch pipes having a plurality of branch flow paths (18) leading from the main flow path to the plurality of injection ports. 14)
The main pipe (13) and the branch pipe are integrally formed,
The heat insulating layer is formed between the inner wall forming the main flow path and the outer wall of the main pipe, and between the inner wall forming the branch flow path and the outer wall of the branch pipe. Nozzle. The thermal insulation layer is
A plurality of partition walls (51) extending in an axial direction of the fluid flow path between an inner wall of the fluid flow path and an outer wall of the pipe member;
The cleaning nozzle according to claim 1, further comprising a plurality of the partition walls and a heat insulating space (52) formed between the partition walls.   The cleaning nozzle according to claim 2, wherein the plurality of partition walls are provided radially about the axis (P, Q1, Q2) of the fluid flow path.   The cleaning nozzle according to claim 2, wherein the heat insulating space is opened at an end portion in the axial direction of the pipe member. The thermal insulation layer is
A plurality of partition walls (55) extending in a radial direction of the fluid flow path between an inner wall of the fluid flow path and an outer wall of the pipe member;
The cleaning nozzle according to claim 1, further comprising: a plurality of the partition walls and a heat insulating space formed between the partition walls.   The cleaning nozzle according to claim 5, wherein the plurality of partition walls are provided intermittently in the axial direction of the fluid flow path.   The cleaning nozzle according to claim 5 or 6, wherein the pipe member has a hole (57) for communicating the heat insulating space and outside air. The cleaning nozzle according to claim 1 , wherein the main flow path and the plurality of branch flow paths are smoothly connected. The cleaning nozzle according to claim 8 , wherein the axis (P) of the main channel and the axes (Q1, Q2) of the plurality of branch channels intersect at an obtuse angle. An attachment portion (30) to which a drive means (5) for driving the tube member can be attached;
The cleaning nozzle according to any one of claims 1 to 9 , wherein the attachment portion is a hollow member having a space (33) on the inside, and is formed integrally with the tube member. A flange portion (20) formed integrally with the tube member;
The cleaning nozzle according to any one of claims 1 to 10 , wherein the flange portion is a hollow member having a space (21) on the inside. The cleaning nozzle according to any one of claims 1 to 11 , wherein a Laval nozzle (19) is formed upstream of the injection port of the pipe member. The nozzle for cleaning according to any one of claims 1 to 12 , wherein the injection port (151) of the pipe member has an elliptical cross section perpendicular to the axis of the fluid flow path. The cleaning nozzle according to any one of claims 1 to 13 ,
A housing (3) having a cleaning chamber (7) in which the workpiece is movable; and the injection port of the cleaning nozzle is inserted into the cleaning chamber;
Fluid supply means (4) for supplying fluid to the supply port of the tube member;
A cleaning apparatus, comprising: drive means (5, 6) for driving the pipe member in a direction (B) intersecting a moving direction (A) of the workpiece moving in the cleaning chamber.

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