JP2016073909A - Washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washer of which a structure of a washing nozzle can be easily changed.SOLUTION: A washer includes a washing tank 2 for storing an object to be washed, a liquid storage part 4 connected to a lower part of the washing tank 2, and a circulation pump 25 which circulates and supplies a liquid in the liquid storage part 4 to a washing nozzle 3. The washing nozzle 3 is rotatably held by a support member 13 arranged in the washing tank 2, and includes a nozzle hole which jets the liquid supplied through the support member 13. The washing nozzle 3 includes an elongated hollow nozzle pipe 14 of which a center part in a longitudinal direction is rotatably held on the support member 13, and an attachment 15 detachably arranged on an opening part of both end parts of the nozzle pipe 14 in the longitudinal direction. A plurality of kinds of attachments 15 can be replaced as the attachment 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cleaning device that performs cleaning by jetting a liquid onto an object to be cleaned.

  Conventionally, as disclosed in Patent Document 1 below, a spray arm (8) is rotatably provided in a chamber (3), and a liquid is ejected from a nozzle of the spray arm (8) onto an object to be cleaned. A cleaning device for cleaning or disinfecting an object to be cleaned is known. In this apparatus, the liquid ejected from the spray arm (8) is collected in a collection space (10) below the chamber (3), and is sprayed by the circulation pump (12) via the circulation pipe (16) ( It is circulated and supplied to 8).

Japanese Patent No. 48868847

  In a conventional washer, the washing nozzle (spray arm) cannot be changed depending on the application. For example, there is a case where it is desired to change the strength or angle of the injection from the nozzle hole depending on the object to be cleaned, but this cannot be easily realized.

  Further, the rotation axis at the central portion in the longitudinal direction of the elongated cleaning nozzle is disposed at the central portion in the cleaning tank having a rectangular cross section. The four corners of the tank are hard to be touched by the cleaning liquid, and the cleaning properties are deteriorated. Considering that it is not known where the object to be cleaned is placed in the cleaning tank, it is preferable that the injection from the cleaning nozzle is performed over a wide range.

  Furthermore, with the use of a cleaning device, the scale on which the hardness of the detergent or water is deposited may adhere to the inner wall of the cleaning tank. Therefore, there is a case where it is desired to remove the scale, but it is preferable if the cleaning nozzle can be replaced with a suitable cleaning nozzle. In addition, it is preferable to have a cleaning nozzle that can eliminate clogging of the nozzle hole of the cleaning nozzle.

  Therefore, the problem to be solved by the present invention is to provide a cleaning device in which the configuration of the cleaning nozzle can be easily changed. In addition, it is preferable that the cleaning nozzle sprays a wide range in the cleaning tank and does not deteriorate the cleaning performance especially at the four corners of the cleaning tank, or a cleaning nozzle suitable for removing the scale, and can eliminate clogging of the nozzle holes. It is an object of the present invention to provide a cleaning device that can be used.

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 is rotatably held by a cleaning tank in which an object to be cleaned is accommodated and a support member provided in the cleaning tank. A cleaning nozzle formed with a nozzle hole for injecting the liquid supplied through the support member, a liquid reservoir connected to a lower portion in the cleaning tank, and the liquid in the liquid reservoir is the cleaning nozzle A circulation pump that circulates and supplies the cleaning nozzle to an elongated hollow nozzle pipe whose longitudinal center is rotatably held by the support member, and openings at both longitudinal ends of the nozzle pipe. And a detachable attachment, and a plurality of types of attachments are attachable as the attachment.

  According to the first aspect of the present invention, since the cleaning nozzle is composed of the nozzle pipe and the attachment, and the attachment can be replaced with a plurality of types, the configuration of the cleaning nozzle can be easily changed. At that time, the cost can be reduced by sharing the nozzle pipe. Moreover, if the attachment is removed from the nozzle pipe, the inside of the nozzle pipe can be easily cleaned as well as the attachment itself.

  According to a second aspect of the present invention, the attachment includes an attachment portion to the nozzle pipe and a main body portion connected to the attachment portion, and each of the plurality of types of attachments has a shape of the attachment portion. The shape of the main body, the number of nozzle holes formed in the main body, and the formation position of the nozzle holes formed in the main body are different from each other. The cleaning device according to claim 1.

  According to the second aspect of the present invention, the plurality of types of attachments may have any one of the shape of the main body, the number of nozzle holes, and the formation positions of the nozzle holes while sharing the configuration of the mounting portion to the nozzle pipe. One or more are different from each other. Thereby, the structure of a washing nozzle can be changed easily. For example, the strength and angle of injection from the nozzle hole can be changed according to the object to be cleaned.

  According to a third aspect of the present invention, in the first attachment which is one of the plurality of types of attachments, the main body portion has an end portion opposite to the mounting portion to the nozzle pipe, and the nozzle pipe. 3. The cleaning device according to claim 2, wherein an inclined surface is formed at one end in the width direction orthogonal to the longitudinal direction, and a nozzle hole is formed in the inclined surface.

  According to the third aspect of the present invention, the main body portion of the first attachment is inclined to the end portion on the opposite side to the mounting portion to the nozzle pipe and the one end portion in the width direction orthogonal to the longitudinal direction of the nozzle pipe. A surface is formed, and nozzle holes are formed in the inclined surface. By using such a first attachment, a wide range of spraying can be performed in the cleaning tank, and in particular, the cleaning properties at the four corners of the cleaning tank can be improved.

  According to a fourth aspect of the present invention, the second attachment, which is one of the plurality of types of attachments, has a main body portion formed on a vertical surface at an end opposite to the attachment portion to the nozzle pipe. In addition, in order to remove the scale that is not attached to the inner surface of the cleaning tank, nozzle removal holes are horizontally formed in the vertical surface. The cleaning device according to claim 2 or 3, wherein the mixed hot water is circulated to the cleaning nozzle to which the second attachment is attached.

  According to the fourth aspect of the present invention, the main body portion of the second attachment has an end portion on the opposite side to the mounting portion for the nozzle pipe formed on the vertical surface, and the nozzle hole is formed horizontally on the vertical surface. ing. Such a second attachment ejects liquid at high speed toward the inner wall of the cleaning tank, and is therefore preferably used for removing the scale in the cleaning tank. Specifically, hot water mixed with a scale remover is circulated and supplied to the cleaning nozzle with the second attachment, and is sprayed to the inner wall of the cleaning tank, with no objects to be cleaned in the cleaning tank. To remove the scale. As described above, the scale can be easily removed only by exchanging with the second attachment and supplying the scale remover.

  The invention according to claim 5 is characterized in that a nozzle hole is formed in the nozzle pipe, and the third attachment, which is one of the plurality of types of attachments, does not have a nozzle hole in its main body. It is a washing machine given in any 1 paragraph of Claims 2-4.

  According to invention of Claim 5, the nozzle hole is not formed in the main-body part of a 3rd attachment. By attaching such a third attachment and pressurizing and supplying the liquid to the cleaning nozzle by a circulation pump, clogging of the nozzle hole of the nozzle pipe can be eliminated.

  Furthermore, in the invention according to claim 6, the object to be cleaned is put in and out of the cleaning tank via a cleaning rack, and at least the uppermost part of the cleaning nozzles provided in the upper and lower stages in the cleaning tank and Cleaning nozzles other than the lowermost cleaning nozzles are provided in the cleaning rack, and the liquid from the circulation pump can be supplied to the cleaning nozzles of the cleaning rack while the cleaning rack is accommodated in the cleaning tank. Furthermore, the fluid supply port to the support member of the cleaning nozzle of the cleaning rack and the fluid discharge port of the piping from the circulation pump are detachably connected to each other. The cleaning device according to Item 1.

  According to the sixth aspect of the present invention, the object to be cleaned can be easily put in and out of the cleaning tank via the cleaning rack.

  According to the cleaning device of the present invention, the configuration of the cleaning nozzle can be easily changed. Depending on the embodiment, a wide range of spraying is performed in the cleaning tank, and in particular, the cleaning nozzle does not deteriorate the cleaning performance even at the four corners of the cleaning tank, the cleaning nozzle is suitable for removing the scale, or the nozzle hole is clogged. It can also be used as a cleaning nozzle that can eliminate the problem.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the washing | cleaning device of one Example of this invention, and shows one part in cross section. It is a schematic exploded perspective view which shows an example of the washing nozzle of the washing | cleaning device of FIG. 1, and has shown the one end part of the washing nozzle. It is a figure which shows the assembly state of FIG. It is a schematic perspective view which shows the other example of the washing nozzle of the washing | cleaning device of FIG. 1, and has shown the one end part of the washing nozzle.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
First, an outline of the overall configuration and control of the cleaning device will be described, and then the cleaning nozzle will be specifically described.

  FIG. 1 is a schematic view showing a cleaning device 1 according to an embodiment of the present invention, and a part thereof is shown in cross section. The cleaning device 1 of this embodiment can be used as a washer disinfector.

  The cleaning device 1 according to the present embodiment includes a cleaning tank 2 for storing an object to be cleaned, a cleaning nozzle 3 for injecting liquid onto the object to be cleaned in the cleaning tank 2, and a liquid connected to the lower part of the cleaning tank 2. The storage unit 4, the water supply unit 5 to the liquid storage unit 4, the drainage unit 6 from the liquid storage unit 4, the chemical solution supply unit 7 to the liquid storage unit 4, and the cleaning nozzle for cleaning the liquid in the liquid storage unit 4 And a circulation means 8 that circulates and supplies the gas to 3. Further, the cleaning device 1 includes a first heater 9 that heats the liquid in the liquid storage unit 4, a blower 10 that sends air into the cleaning tank 2, and a first heater that heats air from the blower 10 into the cleaning tank 2. It is preferable to provide two heaters 11 and the like.

  The object to be cleaned is not particularly limited, but is a medical instrument such as forceps. In the cleaning tank 2, cleaning nozzles 3 are provided in a plurality of upper and lower stages, and an object to be cleaned is disposed between the upper and lower cleaning nozzles 3. At this time, an object to be cleaned is placed on a net shelf (not shown) provided in the upper and lower stages in the cleaning tank 2.

  The cleaning tank 2 is a hollow container that accommodates an object to be cleaned. In the present embodiment, the cleaning tank 2 has a substantially rectangular hollow box shape. The cleaning tank 2 can be opened and closed by a door (not shown). The object to be cleaned can be taken in and out of the cleaning tank 2 by opening the door. The door is provided on the front surface of the cleaning tank 2, but may be provided on both the front surface and the back surface of the cleaning tank 2.

  The cleaning tank 2 is preferably provided with a jacket 12 as a hollow portion opening downward in the cleaning tank 2 on at least the left and right side walls. In the present embodiment, the jacket 12 is continuously formed on the upper wall and the left and right side walls of the cleaning tank 2. At that time, the jacket 12 is closed before and after the cleaning tank 2 and opens downward at the lower ends of the left and right side walls.

  The cleaning nozzle 3 is provided in the cleaning tank 2 in multiple upper and lower stages. In the present embodiment, the base end portion of the arm-shaped support member 13 is held in one side portion of the cleaning tank 2 in a plurality of upper and lower stages. Extend towards. Each support member 13 is formed of an elongated hollow material, and a base end portion is held at the center in the front-rear direction of one side wall of the cleaning tank 2, and from there, the left and right sides of the cleaning tank 2 are substantially perpendicular to the one side wall. It extends horizontally to the center of the direction. Thereby, as for the supporting member 13, the extension front-end | tip part from the one side wall of the washing tank 2 is arrange | positioned in the center part (center part in planar view) of the washing tank 2. As shown in FIG. Then, the central portion in the longitudinal direction of the cleaning nozzle 3 is held at the extended tip portion so as to be rotatable around the vertical axis. The support member 13 of the uppermost cleaning nozzle 3 may be provided so as to protrude downward at the center of the upper wall of the cleaning tank 2.

  As will be described in detail later, the cleaning nozzle 3 is configured by attaching attachments 15 to both ends of an elongated hollow nozzle pipe 14 in a detachable manner. The central portion in the longitudinal direction of the nozzle pipe 14 is rotatably held by the support member 13 as described above, and at that time, the nozzle pipe 14 and the support member 13 are provided so as to communicate with each other.

  The cleaning nozzle 3 is formed with a plurality of nozzle holes (not shown) for injecting fluid (liquid or air). When a fluid is supplied into the cleaning nozzle 3 through the support member 13, the fluid is ejected from the nozzle hole of the cleaning nozzle 3. With this jet, the cleaning nozzle 3 rotates around the bearing portion at the end of the support member 13. The cleaning nozzle 3 provided at the upper end in the cleaning tank 2 ejects fluid only downward, and the cleaning nozzle 3 provided at the lower end in the cleaning tank 2 ejects fluid upward only, The cleaning nozzles 3 other than the unit inject fluids both upward and downward.

  The liquid storage unit 4 is connected to the lower part in the cleaning tank 2. In other words, the cleaning tank 2 includes the liquid storage unit 4 in the lower part. In the present embodiment, the liquid reservoir 4 is provided in the lower part of the central portion in the left-right direction of the cleaning tank 2 so as to extend in the front-rear direction. Specifically, the lower wall of the cleaning tank 2 is formed in an inclined surface 2a that is inclined downward as both left and right end portions go inward in the left-right direction, and the central portion in the left-right direction is recessed downward in a substantially rectangular shape. Has been. And the downward recessed part is made into the liquid storage part 4. FIG. The liquid sprayed from the cleaning nozzle 3 into the cleaning tank 2 falls downward in the cleaning tank 2 and is collected in the liquid storage unit 4 by the inclined surface 2a.

  The water supply means 5 supplies water to the liquid storage section 4 at the lower part of the cleaning tank 2 via a water supply path 16. In the present embodiment, the water supply from the water supply path 16 is sent to the liquid storage unit 4 via the cleaning tank 2. A check valve 17 and a water supply valve 18 are provided in the water supply path 16 toward the cleaning tank 2. Water is supplied into the cleaning tank 2 through the water supply path 16 from the upper part of the cleaning tank 2 into the jacket 12. Therefore, the water from the water supply channel 16 is discharged to the lower part in the cleaning tank 2 through the left and right jackets 12 and supplied to the liquid storage unit 4.

  In the illustrated example, only one water supply channel 16 is shown, but each water supply channel 16 of normal temperature water and hot water may be provided in parallel if desired. At that time, the water supply paths 16 of the normal temperature water and the hot water may be merged in the middle to supply water into the cleaning tank 2 as a desired temperature. Furthermore, the water supply path 16 may be provided in parallel so that water selected from different types of liquids such as soft water or RO water in addition to tap water can be supplied into the cleaning tank 2.

  The cleaning tank 2 with the liquid storage part 4 is provided with a liquid level detector (not shown). Although the liquid level detector does not ask | require the structure in particular, For example, it is comprised from the pressure sensor installed in the bottom part of the liquid storage part 4. FIG. In this case, the liquid level is grasped by utilizing the fact that the water pressure changes according to the liquid level in the liquid storage unit 4 (and the cleaning tank 2). The cleaning tank 2 is provided with an overflow path 19 for discharging a predetermined amount or more of liquid to the outside.

  The drainage means 6 drains from the liquid storage part 4 at the lower part of the cleaning tank 2 via the drainage channel 20. A drain valve 21 is provided in the drain channel 20. By opening the drain valve 21, the stored water in the liquid storage unit 4 can be drained to the outside.

  The chemical liquid supply means 7 supplies the chemical liquid to the stored water in the liquid storage section 4 via the liquid supply path 22. Specifically, a chemical liquid tank 23 in which a chemical liquid is stored is connected to the cleaning tank 2 via a liquid supply path 22, and a chemical liquid pump 24 is provided in the liquid supply path 22. By controlling the operation of the chemical liquid pump 24, the amount of chemical liquid supplied from the chemical liquid tank 23 into the cleaning tank 2 can be adjusted. A plurality of sets of the chemical liquid tank 23 and the liquid supply path 22 may be provided in parallel so that the type of the chemical liquid can be changed. For example, a plurality of chemical tanks 23 storing desired chemicals such as alkaline detergents, enzyme-containing detergents, lubricating rust preventives, and drying accelerators may be provided, and the chemicals to be used may be changed according to the object to be cleaned and the process. .

  The circulation means 8 circulates and supplies the stored liquid in the liquid storage unit 4 to the cleaning nozzle 3. Specifically, the circulation means 8 includes a circulation pump 25 and a circulation pipe 26. The circulation pump 25 is provided on the lower side of the liquid storage unit 4. A branch path 27 is branched in the drain path 20 upstream from the drain valve 21, and the branch path 27 is connected to the suction port of the circulation pump 25. On the other hand, the discharge port of the circulation pump 25 is connected to the support member 13 of the cleaning nozzle 3 via an appropriate circulation pipe 26. Therefore, when the circulation pump 25 is operated, the liquid in the liquid storage unit 4 can be supplied to the cleaning nozzle 3 via the circulation pipe 26 and the support member 13, and the liquid ejected from the cleaning nozzle 3 Returned to the reservoir 4.

  The first heater 9 heats the liquid in the liquid storage unit 4. The first heater 9 may be an electric heater, but is a steam heater in the illustrated example. The steam heater includes a steam pipe disposed in the liquid storage unit 4, and steam is supplied into the steam pipe via a steam supply path 28. The temperature of the liquid in the liquid storage unit 4 can be adjusted by controlling the opening / closing or opening of the steam supply valve 29 provided in the steam supply path 28. The condensed water of steam supplied to the steam heater is discharged through the drain discharge path 30. A steam discharge path 30 from the steam heater is provided with a steam trap 31 and a check valve 32.

  An air supply path 33 from the blower 10 is connected to the upper part of the cleaning tank 2. The air supply path 33 from the blower 10 is branched downstream from the second heater 11, the first air supply path 33 a is connected to the circulation pipe 26 via the air supply valve 34, and the second air supply path 33 b is washed. It is connected to the jacket 12 at the top of the tank 2. The air from the blower 10 is heated by the second heater 11 and then injected from the cleaning nozzle 3 through the first air supply path 33a, the circulation pipe 26 and the support member 13, while the second air supply path 33b. And it supplies to the washing tank 2 from the lower end part of the right and left jacket 12 through the jacket 12.

  An exhaust path 35 to the outside is connected to the upper part of the cleaning tank 2. A part of the exhaust from the exhaust path 35 is exhausted to the outside, and the remaining part is returned to the suction port of the blower 10 via the circulation path 36. In order to keep this return amount as desired, the exhaust passage 35 is provided with an orifice 37. The blower 10 is supplied with exhaust from the cleaning tank 2 and new air (outside air) through the filter 38. In other words, the air can be circulated between the cleaning tank 2 and the blower 10 while partially replacing the air.

  The cleaning device 1 may further include a heating tank 39. The heating tank 39 is used to preheat a liquid used in a later process. In the present embodiment, the heating tank 39 is provided in the upper part (directly above) the cleaning tank 2 because of the installation space.

  Water is supplied to the heating tank 39 via a tank water supply path 40. The tank water supply path 40 is provided with a tank water supply valve 41, and the water supply to the heating tank 39 can be controlled by controlling the opening and closing of the tank water supply valve 41. In this embodiment, the heating tank 39 is provided with a water level detector (not shown) so that at least a full water state (a water supply state up to a set water level) and an air water state can be detected. Based on the detection signal of the water level detector, the tank water supply valve 41 can be controlled to supply water to the heating tank 39 up to the set water level. The heating tank 39 is provided with an overflow path 42 that overflows with a predetermined amount or more of water.

  A third heater 43 is provided in the heating tank 39. The third heater 43 is an electric heater in the illustrated example, but may be a steam heater similar to the first heater 9 in some cases. The liquid in the heating tank 39 can be heated to the set temperature by the third heater 43. Typically, hot water for use in the decontamination process can be produced.

  The heating tank 39 and the washing tank 2 are connected by a hot water passage 44, and a hot water valve 45 is provided in the hot water passage 44. The hot water channel 44 is a common pipe line with the water supply channel 16 in the downstream (cleaning tank 2 side). By opening the hot water valve 45, hot water can be supplied from the heating tank 39 into the cleaning tank 2.

  An ultrasonic vibrator 46 may be further provided in the cleaning tank 2. In the present embodiment, ultrasonic transducers 46 are provided on the left and right inclined surfaces 2a of the lower wall of the cleaning tank 2, respectively.

  The liquid storage unit 4 is provided with a first temperature sensor 47. By controlling the first heater 9 based on the temperature detected by the first temperature sensor 47 (in this embodiment, the steam supply valve 29 is controlled), the water stored in the liquid storage unit 4 and thus the liquid ejected from the cleaning nozzle 3 are controlled. The temperature can be adjusted.

  A second temperature sensor 48 is provided in the air supply path 33 from the blower 10 to the cleaning tank 2 on the downstream side of the installation position of the second heater 11. By controlling the second heater 11 based on the temperature detected by the second temperature sensor 48, the supply air temperature into the cleaning tank 2 can be adjusted.

  The heating tank 39 is provided with a third temperature sensor 49. By controlling the third heater 43 based on the temperature detected by the third temperature sensor 49, the stored water in the heating tank 39 can be adjusted to a desired temperature.

  The cleaning device 1 further includes a controller (not shown) as control means. Specifically, the water supply valve 18, the drain valve 21, the air supply valve 34, the tank water supply valve 41, the hot water valve 45, the circulation pump 25, the chemical pump 24, the first heater 9 (the steam supply valve 29), and the second heater 11, third heater 43, blower 10, ultrasonic transducer 46, liquid level detector of liquid reservoir 4, water level detector of heating tank 39, first temperature sensor 47, second temperature sensor 48, and third temperature sensor 49 etc. are connected to the controller. The controller then cleans or rinses the object to be cleaned in the cleaning tank 2 according to a predetermined procedure (program).

  In this embodiment, the cleaning device executes a selected process among the pre-cleaning process, the cleaning process, the ultrasonic cleaning process, the rinsing process, the decontamination process, and the drying process. Which process is performed in what order is set in the controller by the user prior to the start of operation.

  In the cleaning step, the object to be cleaned is cleaned with water (cleaning liquid) charged with a chemical liquid (detergent). Specifically, water is stored in the liquid storage unit 4 to the set water level X by the water supply unit 5, and the chemical solution is supplied to the liquid storage unit 4 by the chemical solution supply unit 7, and then the circulation unit 8 stores the water in the liquid storage unit 4. The liquid is circulated between the washing nozzles 3. As a result, the object to be cleaned is cleaned with the liquid ejected from the upper and lower cleaning nozzles 3. After circulating the liquid for the set time, the circulation means 8 is stopped and drained by the drain means 6. In the cleaning process, the stored water in the liquid storage unit 4 may be heated to a set temperature (for example, 40 ° C.) by the first heater 9.

  In the ultrasonic cleaning step, water is stored in the cleaning tank 2 until the object to be cleaned is submerged by the water supply means 5, and then the ultrasonic vibrator 46 is operated to ultrasonically clean the object to be cleaned. After the set time has elapsed, the ultrasonic transducer 46 is stopped and drained by the draining means 6. The circulating means 8 may be operated during the ultrasonic cleaning.

  The pre-washing process before the cleaning process (or ultrasonic cleaning process) or the rinsing process after the cleaning process (or ultrasonic cleaning process) is the same as the cleaning process, but pre-washes the object to be cleaned with water that does not contain chemicals. Or it may be rinsed. Moreover, although it is the same as that of a rinsing process, you may implement a decontamination process using hot water (80 degreeC or more and less than 100 degreeC water) instead of normal temperature water.

  Finally, as a drying process, hot air may be circulated in the cleaning tank 2 to dry the object to be cleaned. In that case, the blower 10 and the second heater 11 may be operated, and the air supply valve 34 may be opened. Hot air from the blower 10 is jetted from the nozzle hole of the cleaning nozzle 3 while rotating the cleaning nozzle 3 via the first air supply path 33 a, the circulation pipe 26 and the support member 13. In parallel with this, hot air from the blower 10 is supplied to the bottom of the cleaning tank 2 through the second air supply path 33b and the jacket 12. These hot air is led out from the exhaust passage 35 at the top of the cleaning tank 2 and circulated by the blower 10 while replacing a part thereof as described above.

  2 and 3 are schematic views showing an example of the cleaning nozzle 3 of the cleaning device 1 shown in FIG. 1. FIG. 2 shows an exploded state, and FIG. 3 shows an assembled state. 2 and 3 show only one end of the cleaning nozzle 3, the configuration of the other end is the same. However, even if the cleaning nozzle 3 is rotated by 180 ° about the central portion in the longitudinal direction (the holding portion for the support member 13), the cleaning nozzle 3 is configured to be point-symmetric so as to have the configuration of FIGS. Good.

  The cleaning nozzle 3 includes an elongated hollow nozzle pipe 14 whose longitudinal center portion is rotatably held by the support member 13, and an attachment 15 that is detachably provided at openings at both longitudinal ends of the nozzle pipe 14. Is provided. In the present embodiment, the attachment 15 can be replaced while the configuration of the nozzle pipe 14 is common. That is, a plurality of types of attachments 15 can be replaced, and in the illustrated example, one of the first attachments 15A is shown.

  The configuration of the nozzle pipe 14 is not particularly limited as long as it is a hollow material opened at both ends in the longitudinal direction. For example, although the cross section may be formed in a substantially circular or oval cylindrical shape, in this embodiment, the cross section is formed in a substantially rectangular cylindrical shape. And as shown in FIG. 2, the long side of a substantially rectangular cross section is arrange | positioned horizontally, and a short side is arrange | positioned vertically.

  An appropriate nozzle hole (not shown) may be formed in the nozzle pipe 14. Specifically, in FIG. 2, nozzle holes may be formed in the upper and lower and / or front and rear side walls 14 a to 14 d of the nozzle pipe 14.

  For example, a nozzle hole is formed in the center portion in the width direction of the nozzle pipe 14 in the upper wall 14 a and the lower wall 14 b of the nozzle pipe 14. At that time, a plurality of nozzle holes may be formed apart from each other in the longitudinal direction of the nozzle pipe 14. However, the nozzle pipe 14 of the cleaning nozzle 3 provided at the upper end in the cleaning tank 2 may have nozzle holes formed only in the lower wall 14b of the upper wall 14a and the lower wall 14b. The nozzle pipe 14 of the cleaning nozzle 3 provided at the lower end in the tank 2 may have nozzle holes formed only in the upper wall 14a of the upper wall 14a and the lower wall 14b.

  Further, the nozzle holes may be formed in the side walls 14c and 14d in the width direction of the nozzle pipe 14 instead of or in addition to being formed in the upper wall 14a and / or the lower wall 14b of the nozzle pipe 14. At that time, a plurality of nozzle holes may be formed apart from each other in the longitudinal direction of the nozzle pipe 14. Further, in order to rotate the cleaning nozzle 3 by ejecting fluid from the nozzle hole, one side in the longitudinal direction of the nozzle pipe 14 is located on one side wall in the width direction of the nozzle pipe 14 with the central portion in the longitudinal direction of the nozzle pipe 14 as a boundary. The nozzle hole may be formed only on the other side wall in the width direction of the nozzle pipe 14 on the other side in the longitudinal direction of the nozzle pipe 14. For example, in a state where the nozzle pipe 14 is arranged along the left-right direction, a nozzle hole is formed in the right half front wall (the front side wall 14c in FIG. 2) of the nozzle pipe 14, while the nozzle pipe 14 A nozzle hole may be formed in the rear wall of the left half (the back side wall 14d in FIG. 2).

  In this embodiment, flange plates 50 having a substantially rectangular frame shape are fixed to both ends of the nozzle pipe 14 in the longitudinal direction. The flange plate 50 is constituted by a substantially rectangular plate in which a substantially rectangular hole 50a is formed. The size of the substantially rectangular hole 50 a of the flange plate 50 corresponds to the size of the cross section of the hollow hole of the nozzle pipe 14. Then, in a state where the substantially rectangular hole 50 a of the flange plate 50 is aligned with the hollow hole of the nozzle pipe 14, the flange plate 50 is overlapped and fixed to both longitudinal end surfaces of the nozzle pipe 14. In this state, the flange plate 50 extends outward from the nozzle pipe 14 at least at a part of the side edges. However, the installation of the flange plate 50 may be omitted depending on circumstances.

  The attachment 15 includes a mounting part 51 to the nozzle pipe 14 and a main body part 52 connected to the mounting part 51. As described above, various attachments 15 can be attached to the common nozzle pipe 14, and each attachment 15 has the same shape (including size) of the mounting portion 51. On the other hand, each attachment 15 includes the shape of the main body 52, the number of nozzle holes 53 formed in the main body 52 (including the presence or absence of the nozzle holes 53), and the formation positions of the nozzle holes 53 formed in the main body 52. And at least one of them is different from each other.

  As shown in FIGS. 2 and 3, the first attachment 15 </ b> A has a substantially rectangular block shape in which the mounting portion 51 to the nozzle pipe 14 is fitted into the opening of the nozzle pipe 14. On the other hand, the main body 52 has a substantially rectangular block shape larger than the mounting portion 51. In the illustrated example, the outer dimension of the cross section cut in the width direction (the width direction of the nozzle pipe 14) is the flange plate 50. It corresponds to the outside dimensions.

  In the attachment 15, as shown by a broken line in FIG. 3, the main body 52 and the mounting portion 51 are opened to the base end surface (end surface opposite to the main body portion 52) of the mounting portion 51, and the substantially rectangular hollow hole 54 is opened. Is formed. When the attachment 15 is attached to the nozzle pipe 14, the opening of the hollow hole 54 of the attachment 15 communicates with the hollow hole of the nozzle pipe 14.

  In the main body 52 of the first attachment 15A, a nozzle hole 53a communicating with the hollow hole 54 is formed on the upper and lower surfaces 52a. In the illustrated example, a plurality of nozzle holes 53a are vertically formed on the upper surface 52a and the lower surface 52a of the main body 52 so as to be spaced apart in the width direction of the attachment 15, but the presence / absence, number, formation position of the nozzle holes 53a, The formation angle, size, and the like can be changed as appropriate.

  In addition, the main body 52 of the first attachment 15A is formed with an inclined surface 52b at the end opposite to the mounting portion 51, and a nozzle hole 53b communicating with the hollow hole 54 on the inclined surface 52b. Is formed. In the present embodiment, inclined surfaces 52b are formed on the upper and lower sides of the main body portion 52 so as to incline in the vertical direction as they go away from the mounting portion 51 (outside in the longitudinal direction of the nozzle pipe 14). The inclination angle of the inclined surface 52b is set as appropriate, and is, for example, 10 to 30 degrees with respect to the vertical surface. The upper and lower inclined surfaces 52b are formed with one or a plurality of nozzle holes 53b substantially perpendicular to the inclined surface 52b. In the illustrated example, one nozzle hole 53b is formed in the center portion in the width direction of the attachment 15 on each inclined surface 52b. However, a plurality of nozzle holes 53b may be formed separately in the width direction.

  Further, the main body 52 of the first attachment 15A has an inclined surface 52b and a nozzle hole 53b provided at one end in the width direction with the same configuration as described above (that is, at the end opposite to the mounting portion 51). The inclined surface 52c and the nozzle hole 53c are formed. That is, an inclined surface 52c is formed at one end in the width direction of the main body 52, and a nozzle hole 53c communicating with the hollow hole 54 is also formed on the inclined surface 52c. In the present embodiment, an inclined surface 52c is formed on the upper and lower sides of the main body 52 so as to be inclined inward in the vertical direction as going to one side in the width direction of the main body 52, and one or more nozzle holes 53c are formed on the inclined surface 52c. Is formed. In the illustrated example, the upper and lower inclined surfaces 52c are each formed with a nozzle hole 53c at the center, but the position and number of the nozzle holes 53c can be appropriately changed.

  The other end in the width direction of the main body 52 is formed on a vertical surface, and the nozzle hole 53 is not formed. In the case of such a configuration, even if a nozzle hole for obtaining a jet for rotating the cleaning nozzle 3 is not formed in the nozzle pipe 14, the nozzle hole 53 (53 c) provided at one end in the width direction of the attachment 15. The cleaning nozzle 3 can be rotated. Therefore, the inclined surface 52c and the nozzle hole 53c are provided on the front side as shown in FIG. 2 at the right end portion of the nozzle pipe 14, but the inclined surface 52c and the nozzle hole 53c are provided on the rear side at the left end portion of the nozzle pipe 14. Will be provided. At this time, it is only necessary to change the attachment posture to the nozzle pipe 14 (reverse 180 degrees) using the attachment 15 (15A) having the same configuration.

  Here, the main body 52 of the first attachment 15A is provided with inclined surfaces 52b and 52c on (a) an end opposite to the mounting portion 51 and (b) one end in the width direction, respectively. Nozzle holes 53b and 53c are provided so as to open on the inclined surfaces 52b and 52c (preferably open substantially perpendicular to the inclined surfaces 52b and 52c), but either one of (a) and (b) is provided. The installation of the inclined surface and its nozzle hole may be omitted.

  The attachment 15 is attached by fitting the mounting portion 51 into the opening of the nozzle pipe 14. At that time, the packing 55 is placed between the end surface of the nozzle pipe 14 (more specifically, the end surface of the flange plate 50) and the stepped portion of the attachment 15 (stepped surface of the mounting portion 51 and the main body portion 52). Installed in a watertight manner. Then, the fixing hook 56 provided on the nozzle pipe 14 may be engaged with the attachment 15.

  In the present embodiment, the fixing hook 56 is formed by bending a metal wire into a substantially U shape, and both open ends thereof are arranged so as to sandwich both side walls in the width direction of the nozzle pipe 14. It is rotatably held on both side walls. Specifically, a bent portion 56a inward in the width direction of the nozzle pipe 14 is formed at both open ends of the fixed hook 56, and the bent portion 56a is formed on the both side walls 14c and 14d in the width direction of the nozzle pipe 14. It is inserted into the hole. As shown in FIG. 3, the end portion of the fixed hook 56 is held at a position shifted downward (or upward) from the central portion in the vertical direction on the side walls 14 c and 14 d in the width direction of the nozzle pipe 14.

  On the other hand, a hook groove 57 is formed in the main body 52 of the attachment 15 so as to extend forward and backward between the upper and lower inclined surfaces 52b at the end opposite to the mounting portion 51. Accordingly, the attachment portion 51 of the attachment 15 may be fitted into the opening of the nozzle pipe 14 via the packing 55, and the central piece 56 b of the fixing hook 56 may be engaged with the hook groove 57 of the main body portion 52. Thereby, the attachment 15 can be prevented from falling off the nozzle pipe 14. The position is adjusted so that the fixed hook 56 does not cover each nozzle hole 53 in a state where the attachment 15 is fitted to the nozzle pipe 14 and positioned by the fixed hook 56. Further, even if the type of the attachment 15 is changed, a hook groove 57 is formed in each attachment 15 so that the attachment 15 can be attached to and detached from the nozzle pipe 14 only by rotating the fixing hook 56 with respect to the nozzle pipe 14.

  In the case where the cleaning nozzle 3 is rotated about the central portion of the cleaning tank 2 having a substantially rectangular cross section, if the liquid is sprayed only above and below the cleaning nozzle 3, the cleaning performance is inferior at the four corners of the cleaning tank 2. However, if the first attachment 15A is attached, the liquid can be ejected obliquely upward and obliquely downward, so that the cleanability at the four corners of the cleaning tank 2 can be improved. In addition, it is good to comprise a jet nozzle so that the liquid sprayed from each nozzle hole 53 spreads in a fan shape. Further, the attachment 15 of the cleaning nozzle 3 provided at the upper end portion of the cleaning tank 2 does not need the inclined surfaces 52b, 52c facing upward and the nozzle holes 53b, 53c, and conversely, the lower end portion of the cleaning tank 2. In the attachment 15 of the cleaning nozzle 3 provided on the lower side, the inclined surfaces 52b and 52c facing downward and the nozzle holes 53b and 53c can be made unnecessary.

  FIG. 4 is a schematic view showing another example of the cleaning nozzle 3 of the cleaning device 1 of FIG. 1 and shows a state in which the second attachment 15B is attached to the end of the nozzle pipe 14. In FIG. 4, only one end of the cleaning nozzle 3 is shown, but the configuration of the other end is the same. However, as in the case of the first attachment 15A, the cleaning nozzle 3 can be configured as shown in FIG. 4 even if it is rotated by 180 ° about the longitudinal center (the holding portion to the support member 13). Usually it is mounted symmetrically.

  The second attachment 15B has basically the same configuration as the first attachment 15A described above. Therefore, in the following description, differences between the two will be mainly described, and description of similar parts will be omitted. Corresponding portions will be described with the same reference numerals.

  The second attachment 15B is different from the first attachment 15A in the configuration of the main body 52. Specifically, the end of the second attachment 15B opposite to the mounting portion 51 is formed on the vertical surface 52d, and the hook groove 57 of the fixing hook 56 is formed in the vertical center of the vertical surface 52d. Has been. One or a plurality of nozzle holes 53d are formed horizontally (that is, perpendicular to the vertical surface 52d) on the upper and lower vertical surfaces 52d sandwiching the hook groove 57.

  In the case of the second attachment 15B, the formation of the nozzle holes 53a (FIG. 2) in the upper and lower surfaces 52a of the main body 52 may be omitted. Further, if the cleaning nozzle 3 can be rotated by the jet flow from the nozzle hole of the nozzle pipe 14, the formation of the inclined surface 52c and the nozzle hole 53c at one end in the width direction of the main body 52 of the attachment 15 may be omitted. . Other configurations are the same as those of the first attachment 15A.

  The second attachment 15B is suitably used when removing scale (deposited with detergent or water hardness) adhering to the front, rear, left and right side walls (including doors) in the cleaning tank 2. In that case, water (preferably hot water of 80 ° C. or more and less than 100 ° C.) mixed with a scale removing agent in a state where the object to be cleaned is not accommodated in the cleaning tank 2 is supplied to the cleaning nozzle 3 to which the second attachment 15B is attached. It should circulate. Prior to the start of the scale removal operation, the scale removal agent may be added by the operator in a necessary amount to the liquid storage unit 4. The scale remover is typically citric acid.

  When the start of the scale removal operation is instructed by a predetermined operation, the controller prepares hot water in the liquid storage unit 4 as in the decontamination step, and circulates the hot water mixed with the scale removing agent. 8 to circulate. After the liquid is circulated for a set time, the circulation is stopped and drained by the drainage means 6. Prior to this drainage, the controller may drain the water after neutralizing it with the chemical solution supply means 7 and neutralizing it. In order to perform this neutralization uniformly, after the neutralizing agent is added, the circulating means 8 may be operated for a predetermined time and then drained. Thereafter, the cleaning tank 2 may be rinsed in the same manner as in the rinsing step. Furthermore, if desired, the above-described drying step may be performed.

  Since the second attachment 15B ejects the liquid at high speed toward the inner wall of the cleaning tank 2, the scale in the cleaning tank 2 can be effectively removed. That is, the scale can be peeled off by the jet from the second attachment 15B while the scale is softened by the scale remover. In order to secure the flow velocity of the liquid from the vertical surface 52d of the second attachment 15B, a nozzle in which the formation of nozzle holes in the nozzle pipe 14 (particularly nozzle holes in the upper and lower surfaces 14a and 14b) is omitted may be used.

  In the scale removal operation, the scale can be removed not only from the inside of the washing tank 2 but also from the circulation pipe 26, the support member 13, the washing nozzle 3, and the like. As with the first attachment 15A, the second attachment 15B may be configured with a jet outlet so that the liquid from the main body 52 spreads in a fan shape (particularly in a fan shape that spreads up and down as it goes to the wall surface). .

  By the way, although it is not restricted to the case of the 2nd attachment 15B, according to the washing nozzle 3 of a present Example, the attachment 15 can be easily attached or detached with respect to the nozzle pipe 14. FIG. Moreover, in the state where the attachment 15 is removed from the nozzle pipe 14, the opening of the nozzle pipe 14 is exposed. In addition, as will be described later, the nozzle pipe 14 can be removed from the cleaning tank 2 (or a cleaning rack described later). Therefore, each component of the cleaning nozzle 3 can be easily cleaned.

  In addition, although not shown, the attachment 15 that does not have the nozzle hole 53 may be attached to the main body 52 as the third attachment 15C. In that case, nozzle holes are formed in the nozzle pipe 14. The clogging of the nozzle hole of the nozzle pipe 14 can be eliminated by attaching such a third attachment 15C and pressurizing and supplying the liquid to the cleaning nozzle 3 by the circulation pump 25. At this time, as in the scale removal operation using the second attachment 15B, a scale remover may be mixed into the circulating water.

  The attachment 15 is not limited to the attachments described above, and other configurations may be employed. At this time, as described above, while the configuration of the mounting portion 51 to the nozzle pipe 14 is made common, the shape of the main body portion 52 and the number of nozzle holes 53 formed in the main body portion 52 (including the presence or absence of the nozzle holes 53 are included). ) And the formation position of the nozzle hole 53 formed in the main body portion 52, or any one or more of them may be changed. Thereby, for example, the direction and / or flow rate of the fluid ejected from the cleaning nozzle 3 can be changed.

  By the way, the cleaning nozzle 3 and its support member 13 may be configured to be detachable from the cleaning tank 2 (to the cleaning rack when the cleaning nozzle 3 is provided in the cleaning rack as described later). That is, in this embodiment, the support member 13 of the cleaning nozzle 3 has a base end portion that is detachable from the side wall of the cleaning tank 2. The connection opening (connection port on the cleaning tank 2 side) to which the support member 13 is not attached is provided with a lid member and is closed. In this way, the vertical interval of the cleaning nozzle 3 provided in the cleaning tank 2 can be appropriately changed, and each net shelf can be individually attached to and detached from the cleaning tank 2. Can be easily accommodated. And with the change of the installation interval of the up-down direction of the washing nozzle 3, it can also change to the attachment 15 of the washing nozzle 3 suitable for it.

  The cleaning device 1 of the present invention is not limited to the configuration of the above embodiment and can be changed as appropriate. In particular, the cleaning nozzle 3 includes a nozzle pipe 14 that is rotatably held by the support member 13 on the cleaning tank 2 side, and an attachment 15 that is detachably provided at the opening thereof. If the type of attachment 15 can be replaced, other configurations and controls can be changed as appropriate.

  For example, the attachment / detachment structure of the attachment 15 with respect to the nozzle pipe 14 can be changed as appropriate. After fitting the mounting portion 51 of the attachment 15 into the opening of the nozzle pipe 14 and then engaging with the fixing hook 56, the mounting portion 51 of the attachment 15 is fitted into the opening of the nozzle pipe 14 or twisted by fitting. Thus, the attachment 15 may be automatically engaged with the nozzle pipe 14.

  Moreover, in the said Example, although the same attachment 15 was basically attached to the both ends of the nozzle pipe 14 by the point object structure, you may attach the attachment 15 of a different structure depending on the case. .

  Further, when the cleaning nozzles 3 are provided in a plurality of stages in the cleaning tank 2, it is not necessary to use the same attachment 15 for all the cleaning nozzles 3, and depending on the type and size of the object to be cleaned, each stage Different cleaning nozzles 3 may be used.

  Furthermore, in the said Example, although the to-be-cleaned object was taken in / out with respect to the net shelf in the washing tank 2, a washing rack can be taken in / out in the washing tank 2, and to-be-cleaned object can be accommodated in the net shelf of the washing rack Also good. In that case, the cleaning nozzles (particularly the cleaning nozzles other than the uppermost and / or lowermost cleaning nozzles) 3 provided in a plurality of upper and lower stages are provided in the cleaning rack. As in the above-described embodiment, the cleaning rack is provided with arm-shaped support members 13 in a plurality of upper and lower stages on one side, and the cleaning nozzle 3 is rotatably held by each support member 13. Then, in a state where the cleaning rack is accommodated in the cleaning tank 2, the fluid from the circulation pump 25 (or the air from the blower 10) can be supplied to the cleaning nozzle 3 of the cleaning rack so that the fluid to the support member 13 on the cleaning rack side can be supplied. The supply port and the fluid discharge port of the piping from the circulation pump 25 on the cleaning tank 2 side are detachably connected. Note that the cleaning rack may have a wagon shape with a caster at the lower end. In the embodiment, one or both of the cleaning nozzles 3 provided at the upper and lower end portions in the cleaning tank 2 may be provided on the cleaning tank 2 side instead of being provided in the cleaning rack.

DESCRIPTION OF SYMBOLS 1 Washer 2 Washing tank 3 Washing nozzle 4 Liquid storage part 5 Water supply means 6 Drainage means 7 Chemical liquid supply means 8 Circulation means 9 First heater 10 Blower 11 Second heater 13 Support member 14 Nozzle pipe 15 Attachment 15A First attachment 15B First Two attachments 25 Circulating pump 51 Mounting portion 52 Body portion 52a Upper and lower surfaces 52b Inclined surface 52c Inclined surface 52d Vertical surface 53 Nozzle hole 54 Hollow hole 55 Packing 56 Fixed hook 57 Hook groove

Claims (6)

A cleaning tank in which an object to be cleaned is stored;
A cleaning nozzle that is rotatably supported by a support member provided in the cleaning tank and has a nozzle hole that ejects liquid supplied through the support member;
A liquid reservoir connected to the lower part of the cleaning tank;
A circulation pump that circulates and supplies the liquid in the liquid reservoir to the cleaning nozzle;
The cleaning nozzle includes an elongated hollow nozzle pipe whose longitudinal center portion is rotatably held by the support member, and an attachment that is detachably provided at openings at both longitudinal ends of the nozzle pipe,
A plurality of types of attachments can be replaced as the attachment. The attachment includes a mounting portion to the nozzle pipe, and a main body portion connected to the mounting portion.
Each of the plurality of types of attachments has the same shape of the mounting portion, but the shape of the main body portion, the number of nozzle holes formed in the main body portion, and the nozzle holes formed in the main body portion. The cleaning device according to claim 1, wherein at least one of the formation positions is different from each other. The first attachment, which is one of the plurality of types of attachments, has an end portion on the opposite side of the mounting portion to the nozzle pipe, and one end portion in the width direction orthogonal to the longitudinal direction of the nozzle pipe. The scrubber according to claim 2, wherein an inclined surface is formed, and a nozzle hole is formed in the inclined surface. The second attachment, which is one of the plurality of types of attachments, has a main body portion formed on a vertical surface on the opposite side of the mounting portion to the nozzle pipe, and a nozzle hole is horizontally disposed on the vertical surface. Is formed,
In order to remove the scale that has not adhered to the inner surface of the cleaning tank, hot water mixed with a scale remover is not washed in the cleaning tank, and the cleaning is performed with the second attachment attached. It is made to circulate to a nozzle. The washing machine according to claim 2 or 3 characterized by things. Nozzle holes are formed in the nozzle pipe,
The cleaning device according to any one of claims 2 to 4, wherein the third attachment that is one of the plurality of types of attachments does not have a nozzle hole in a main body portion thereof. The object to be cleaned is put into and out of the cleaning tank via a cleaning rack,
Among the cleaning nozzles provided in the upper and lower stages in the cleaning tank, at least cleaning nozzles other than the uppermost and lowermost cleaning nozzles are provided in the cleaning rack,
A fluid supply port to a support member of the cleaning nozzle of the cleaning rack, and the circulation pump so that the liquid from the circulation pump can be supplied to the cleaning nozzle of the cleaning rack in a state where the cleaning rack is accommodated in the cleaning tank; The scrubber according to claim 1, wherein a fluid discharge port of the pipe from the side is detachably connected.

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