TW201918294A - Cleaning apparatus - Google Patents

Abstract

Provided is a cleaning apparatus capable of cleaning the entire object-to-be-cleaned uniformly irrespective of the position of the cleaning nozzle. A cleaning tank for receiving an object-to-be-cleaned and a cleaning nozzle 3 formed with a plurality of injection ports 11 at intervals in a longitudinal direction are provided. The cleaning nozzle 3 is rotatably held in the cleaning tank. The injection ports 11 are formed with a larger diameter and / or a larger number as the separation distance from the rotation center of the cleaning nozzle 3 becomes longer. For example, in the cleaning nozzle 3, the injection ports 11 are formed at equal intervals along the longitudinal direction, and the diameter of the injection port is increased as the separation distance from the rotation center of the cleaning nozzle 3 becomes longer.

Description

 Washer  

The present invention relates to a cleaner for ejecting a liquid to an object to be cleaned.

In the past, as disclosed in Patent Document 1 below, a jet type cleaner has been known. According to the drawing of the document, the cleaner includes a washing tank (211) for accommodating the object to be cleaned, a rack (30) on which the object to be washed is placed, and an ejection port (341) provided with washing water to be in the center of the rack. Rotating cleaning nozzle (34). When the water pump (221) is operated, the washing water of the water storage tank (222) is supplied to the washing nozzles (23, 34), and is sprayed from the injection ports (341) of the washing nozzles (23, 34) to be cleaned. The object to be cleaned and the cleaning nozzles (23, 34) are rotated.

 [Prior Art Literature]    [Patent Literature]  

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2010-149013 (Patent Application No. 1, paragraph [0027]-[0030], FIG. 1 to FIG. 4)

In such a washer, it is necessary to make the liquid from the washing nozzle contact the object to be cleaned in order to avoid poor washing. However, since the cleaning nozzle rotates around the center portion in the longitudinal direction, the flow rate of the liquid that comes into contact with the object to be cleaned is formed only when the ejection ports of the same diameter are formed at regular intervals from the center toward the end of the cleaning nozzle. It will decrease in response to the distance from the center of the cleaning nozzle. Specifically, the farther the washing nozzle is from the center of rotation toward the outside, the faster the moving speed in the circumferential direction (in other words, when the washing nozzle is rotated by a predetermined angle, the moving distance of the jet opening on the outer peripheral side is higher than that of the jet port on the inner peripheral side) The moving distance is longer, and therefore, the time during which the object area of the object to be cleaned contacts the liquid becomes shorter as it goes further from the center of the washing nozzle.

Since the cleaning force is affected by the flow rate of the liquid that contacts the object to be cleaned, the cleaning force is lowered as the outer peripheral side of the cleaning nozzle is washed. Further, the liquid in the center portion of the cleaning nozzle is excessively large, and the liquid in the outer peripheral portion is insufficient, and the cleaning force may be uneven in the vicinity of the center of the cleaning nozzle and the end portion.

Accordingly, an object of the present invention is to provide a cleaner capable of uniformly cleaning the entire object to be cleaned without depending on the position of the cleaning nozzle.

The present invention has been made in order to solve the above problems, and the invention according to claim 1 is a cleaner comprising: a cleaning tank for accommodating the object to be cleaned; and a plurality of ejection ports formed at intervals in the longitudinal direction In the cleaning nozzle, the cleaning nozzle is rotatably held in the cleaning tank, and the injection port is formed such that the longer the separation distance from the rotation center of the cleaning nozzle, the larger the diameter and/or the larger the number.

According to the invention of claim 1, the injection port formed in the cleaning nozzle is formed such that the longer the separation distance from the center of rotation, the larger the diameter and/or the larger the number. Therefore, the injection flow rate on the outer peripheral side can be increased as compared with the case where the injection ports having the same diameter are formed at regular intervals. Thereby, the entire object to be cleaned can be uniformly washed without depending on the position of the cleaning nozzle.

The invention according to claim 2, wherein the cleaning nozzle has the injection port formed at equal intervals along the longitudinal direction and away from the rotation center of the cleaning nozzle. The longer the separation distance, the larger the aperture of the aforementioned injection port.

According to the invention of claim 2, the cleaning nozzle has the injection ports formed at equal intervals along the longitudinal direction, and the longer the separation distance from the rotation center, the larger the diameter of the injection port. According to such a simple structure, it is possible to uniformly clean the entire object to be cleaned without depending on the position of the cleaning nozzle.

The invention according to the first aspect of the invention, wherein the injection port on the center side of the rotation surface of the cleaning nozzle and the injection port on the outer circumference side are each The difference in liquid injection flow rate per unit area is less than a predetermined amount.

According to the invention of claim 3, it is possible to reduce the difference in the injection flow rate of the liquid per unit area of the object to be cleaned on the center side and the outer circumference side of the rotation of the cleaning nozzle. Thereby, the entire object to be washed can be uniformly washed without depending on the position of the cleaning nozzle.

According to the washer of the present invention, it is possible to uniformly clean the entire object to be cleaned without depending on the position of the washing nozzle.

1‧‧‧cleaner

2‧‧‧cleaning tank

2a‧‧‧Sloping surface

3‧‧‧ cleaning nozzle

3a, 3b‧‧‧ sloped surface

4‧‧‧Liquid accumulation department

5‧‧‧Water supply means

6‧‧‧Drainage means

7‧‧‧medical solution

8‧‧‧Recycling

9‧‧‧heating means

10‧‧‧Support parts

11‧‧‧jet

12‧‧‧cleaning rack

13‧‧‧Water distribution parts

14‧‧‧Circulating pump

15‧‧‧ spacers

16‧‧‧Waterway

17‧‧‧Water supply valve

18‧‧‧Drainage road

19‧‧‧Drain valve

20‧‧‧Drug tank

21‧‧‧Supply road

22‧‧‧Drug pump

23‧‧‧Recycling piping

24‧‧‧ check valve

25‧‧‧heater

26‧‧‧Level detector

27‧‧‧Temperature Sensor

28‧‧‧Supersonic vibrator

Fig. 1 is a schematic view showing a washer according to an embodiment of the present invention, and showing a cross-sectional view of a part thereof.

Fig. 2 is a schematic plan view showing an example of a washing nozzle used in the washer of Fig. 1.

Fig. 3 is a schematic front view of the cleaning nozzle of Fig. 2.

Fig. 4 is a schematic perspective view of the cleaning nozzle of Fig. 2, and a part thereof is omitted.

Hereinafter, specific embodiments of the present invention will be described in detail based on the drawings.

Fig. 1 is a schematic view of a washer 1 according to an embodiment of the present invention, showing a cross-sectional view of a part thereof.

Hereinafter, the overall structure and operation method of the washer 1 will be described first, and then the cleaning nozzle 3 which is a characteristic part of the present invention will be described. In the following, for convenience of explanation, the horizontal direction in the first drawing is the left-right direction of the washer 1, and the vertical direction in the first drawing is the vertical direction of the washer 1, and the paper surface of the first drawing is used. The orthogonal direction is assumed to be the front-rear direction of the washer 1 (the front side is the front side).

The washer 1 of the present embodiment includes a washing tank 2 for accommodating the object to be cleaned, a washing nozzle 3 for ejecting the liquid to the object to be cleaned in the washing tank 2, and a liquid accumulating portion 4 connected to the bottom surface of the washing tank 2, and The water supply means 5 for supplying water to the liquid storage unit 4, the drainage means 6 for draining the liquid from the liquid storage unit 4, the chemical supply means 7 for supplying the chemical to the liquid storage unit 4, and the circulation of the liquid of the liquid storage unit 4 to the cleaning nozzle 3 The means 8 is a heating means 9 for heating the liquid of the liquid storage unit 4, and a control means (not shown) for controlling the respective means 5 to 9.

The object to be cleaned is not particularly limited, and is, for example, a medical device such as a forceps. In the cleaning tank 2, the cleaning nozzles 3 are provided in a plurality of stages, and the objects to be cleaned are disposed between the upper and lower cleaning nozzles 3. At this time, the object to be cleaned is placed on a square or mesh-shaped shelf (not shown). Further, depending on the situation, the object to be cleaned may be stored in the basket.

The washing tank 2 is a hollow container that accommodates the object to be cleaned. In the present embodiment, the washing 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 moved into and out of the washing tank 2 by opening the door. The door system is provided on the front surface of the washing tank 2, but may be provided on both the front side and the back side of the washing tank 2.

The cleaning nozzle 3 ejects liquid to the object to be cleaned in the cleaning tank 2. In the cleaning tank 2, the washing nozzles 3 are arranged in a plurality of stages. In the present embodiment, the base end portion of the arm-shaped support member 10 is held in the upper and lower portions of the cleaning groove 2 at the central portion in the front-rear direction, and the support members 10 are directed from one side of the cleaning tank 2 toward the left and right. Extends in the center of the direction. Further, the central portion of the cleaning nozzle 3 in the longitudinal direction is rotatably held around the longitudinal axis.

2 to 4, the cleaning nozzle 3 is formed with a plurality of ejection ports 11 (Figs. 2 to 4) for ejecting the liquid supplied through the inside of the support member 10. When liquid is supplied into the washing nozzle 3 via the support member 10, the liquid is ejected from the ejection port 11 of the washing nozzle 3. By the jet flow, the cleaning nozzle 3 is rotated in the horizontal direction. Further, the cleaning nozzle 3 provided at the upper end portion of the cleaning tank 2 sprays only the liquid downward, and the cleaning nozzle 3 provided at the lower end portion of the cleaning tank 2 sprays only the liquid upward, and the cleaning nozzles other than the upper and lower ends are toward Spray the liquid up and down.

Incidentally, as shown by the broken line in FIG. 1, it is also possible to provide the cleaning frame 12 to enter and exit the cleaning tank 2. In the example of the drawing, the cleaning nozzles 3 provided at the upper and lower end portions are provided in the cleaning tank 2 itself, and the other cleaning nozzles 3 are provided in the cleaning rack 12. A water distribution member 13 is provided at one side of the cleaning frame 12, and the support member 10 is provided in a plurality of stages above and below the water distribution member 13, and the cleaning nozzle 3 is rotatably held by each of the support members 10. Further, the cleaning rack 12 is provided with a storage rack for the object to be cleaned on the upper portion of each of the cleaning nozzles 3 and the lower portion of the cleaning rack 12. When the cleaning rack 12 is housed in the washing tank 2, the piping from the circulation pump 14 to be described later is connected to the water distribution member 13.

A liquid storage unit 4 is connected to a lower portion of the cleaning tank 2. Specifically, the bottom surface of the washing tank 2 is formed with a liquid accumulating portion 4 that is recessed downward. Conversely, the liquid storage portion 4 is provided on the bottom surface of the cleaning tank 2 so as to open upward. Further, it is preferable that the bottom surface of the cleaning tank 2 is formed to be inclined downward as it approaches the opening edge of the liquid storage portion 4.

In the present embodiment, the bottom surface of the cleaning tank 2 is formed as an inclined surface 2a which is inclined downward from the inner side in the left-right direction from the left and right end portions thereof, and is formed in the front-rear direction from the front and rear ends thereof. An inclined surface that is inclined downward toward the inside. In addition, a liquid storage portion 4 that is recessed in a substantially rectangular shape toward the lower side is formed in the center portion in the left-right direction of the cleaning tank 2 and in the center portion in the front-rear direction.

Preferably, the cleaning tank 2 and the liquid accumulating portion 4 are separated by a spacer 15 made of a mesh material or a perforated plate. For example, the cleaning tank 2 and the liquid accumulating portion 4 are separated by a spacer 15 made of a metal mesh or a punched metal. Further, it is preferable that a filter (not shown) is provided in the liquid storage unit 4 at a position lower than the spacer 15 . A filter having a mesh size much smaller than the spacer 15 is used.

The water supply means 5 supplies water to the liquid storage unit 4 via the water supply path 16. The water supply pipe 16 is provided with a water supply valve 17. By opening the water supply valve 17, the water supply unit 4 can supply water. In the example of the drawing, the water supply path 16 is connected to the washing tank 2, and the liquid storage unit 4 is supplied with water through the washing tank 2. However, the water supply path 16 may be connected to the liquid storage unit 4 to directly accumulate the liquid. Part 4 performs water supply. Further, the water supply means 5 may be configured to be capable of supplying water selected from a plurality of types of water (for example, tap water, warm water, membrane filtered water, etc.).

The drain means 6 discharges water from the liquid storage unit 4 via the drain path 18. The drain path 18 is provided with a drain valve 19. The drain valve 19 is opened, so that drainage can be performed from the washing tank 2 or the liquid accumulating portion 4.

The chemical solution supply means 7 supplies the chemical solution from the chemical solution tank 20 to the liquid storage unit 4 via the supply liquid path 21. The liquid supply path 21 is provided with a chemical liquid pump 22. When the chemical pump 22 is operated, a predetermined amount of the chemical liquid can be supplied to the liquid storage unit 4. In the example of the drawing, the liquid supply path 21 is directly connected to the liquid storage unit 4 to supply the chemical liquid directly to the liquid storage unit 4. However, the liquid supply path 21 may be connected to the cleaning tank 2 to be cleaned. The tank 2 supplies the chemical liquid to the liquid storage unit 4. Further, the chemical solution supply means 7 may be configured to supply a chemical solution selected from a plurality of chemical liquids (for example, an alkaline lotion, a lotion prepared with an enzyme, a rust preventive lubricant, a drying accelerator, etc.).

The circulation means 8 circulates and supplies the liquid of the liquid storage unit 4 to the washing nozzle 3. Specifically, the circulation means 8 includes a circulation pipe 23 and a circulation pump 14. The circulation pipe 23 is a pipe from the liquid storage unit 4 to the support member 10 of each of the cleaning nozzles 3, and a circulation pump 14 is provided in the middle thereof. Further, in the example of the drawing, in the circulation pipe 23, the piping from the liquid storage unit 4 to the circulation pump 14 is configured to share a line with the drainage passage 18 on the upstream side. Further, in the circulation pipe 23, a check valve 24 is provided on the outlet side of the circulation pump 14. When the circulation pump 14 is operated, the liquid of the liquid storage unit 4 is supplied to the cleaning nozzle 3 via the circulation pipe 23 and the support member 10 to be ejected, and can be returned to the liquid storage unit 4 at the lower portion of the cleaning tank 2.

In the present embodiment, the heating means 9 is constituted by a heater 25 provided in the liquid storage unit 4. In the illustrated example, the heater 25 is an electric heater, but may be a steam heater depending on the situation. When it is an electric heater, the opening and closing control is usually performed, but the output can be adjusted depending on the situation. On the other hand, in the case of a steam heater, steam can be supplied into the steam pipe, and the condensed water of the steam is discharged to the outside via the steam trap. Further, the opening and closing or opening degree of the steam supply valve provided to the steam supply path is controlled.

The liquid storage unit 4 is provided with a liquid level detector 26. The configuration of the liquid level detector 26 is not particularly limited, and is constituted, for example, by a pressure sensor provided at the bottom of the liquid storage unit 4. At this time, the liquid level is grasped by the change in the water pressure based on the liquid level in the liquid storage unit 4 or the cleaning tank 2.

The liquid accumulating portion 4 is provided with a temperature sensor 27. The heater is controlled in accordance with the detected temperature of the temperature sensor 27, so that the temperature of the accumulated liquid in the liquid accumulating portion 4 can be adjusted.

Further, the ultrasonic vibrator 28 can be provided in the washer 1 as needed. In the illustrated example, the left and right inclined faces 2a of the lower portion of the cleaning tank 2 are provided with ultrasonic transducers 28, respectively. The ultrasonic vibrator 28 is connected to the ultrasonic oscillator to control oscillation. By operating the ultrasonic vibrator 28 in a state where the object to be cleaned is immersed, ultrasonic cleaning of the object to be cleaned can be performed.

The control means is a controller (not shown) connected to the liquid level detector 26, the temperature sensor 27, and the like in addition to the above-described respective means 5 to 9. Specifically, the water supply valve 17, the drain valve 19, the chemical pump 22, the circulation pump 14, the heater 25, the ultrasonic oscillator (28), the liquid level detector 26, the temperature sensor 27, and the like are connected to the controller. Further, the controller performs cleaning of the object to be cleaned in the cleaning tank 2 in accordance with a predetermined program (program). At this time, at least the flushing operation as described below can be performed.

In the flushing operation, the liquid is accumulated in the liquid storage unit 4, and the liquid is circulated to the cleaning nozzle 3 by the circulation means 8, and is ejected from the cleaning nozzle 3 to the object to be cleaned. Specifically, first, water is supplied to the liquid storage unit 4 by the water supply means 5 until the liquid level detector 26 detects the set water level. Thereafter, since the water level is lowered once the circulation pump 14 is operated, the set water level at the time of initial water supply may be above the spacer 15, for example, the water supply to the vicinity of the upper end edge of the inclined surface 2a. At this time, the water level during the operation of the circulation pump 14 also converges in the liquid storage unit 4.

After the water supply to the liquid storage unit 4 is performed, the desired chemical liquid is supplied to the liquid storage unit 4 by the chemical supply means 7 as needed. The chemical liquid phase from the chemical solution supply means 7 is supplied with a set amount so that the water supply from the water supply means 5 becomes a set concentration. Further, in the same manner, the accumulated water in the liquid storage unit 4 is heated to a set temperature by the heating means 9 as needed. The input of the chemical solution or the heating of the accumulated water is not limited to the operation of the circulation means 8, and may be performed during the operation of the circulation means 8.

In any case, the circulation pump 14 is operated in a state where a predetermined amount of liquid is accumulated in the liquid storage unit 4, and the storage liquid is supplied to the cleaning nozzle 3 by the circulation pipe 23 and the support member 10 to be ejected while rotating. The object to be cleaned is cleaned while cleaning the nozzle 3. Further, the liquid ejected from each of the washing nozzles 3 is returned to the liquid accumulating portion 4 at the lower portion of the washing tank 2. When the predetermined end condition (for example, the elapse of the set time) is satisfied, the circulation pump 14 is stopped, and the liquid in the liquid storage unit 4 is discharged by the drain means 6.

Usually, such a flushing operation is repeated to perform cleaning and rinsing of the object to be cleaned. For example, the pre-washing of the normal-temperature water to which the chemical liquid is not supplied, the main washing using the warm water to which the lotion is added as needed (usually plural times), and the rinsing of the warm water to which the rinsing agent is added are used as needed. (usually multiple times) and so on.

Next, a specific example of the cleaning nozzle 3 used in the washer 1 of the present embodiment will be described.

2 to 4 are schematic views showing an example of the cleaning nozzle 3 of the present embodiment, a second view is a plan view, a third view is a front view, and a fourth view is a partially omitted perspective view. Hereinafter, the longitudinal direction of the cleaning nozzle 3 means the horizontal direction (longitudinal direction) in FIG. 2, and the short-side direction of the cleaning nozzle 3 means the vertical direction (width direction) in FIG.

The cleaning nozzle 3 is formed of an elongated hollow member, and as described above, the central portion in the longitudinal direction is held by the support member 10 so as to be rotatable about the longitudinal axis (that is, rotatable in the horizontal direction). An injection port 11 for forming a liquid is formed in the cleaning nozzle 3. The injection port 11 is formed on one of the upper and lower surfaces of the cleaning nozzle 3, the side surface in the short-side direction, and the end surface in the longitudinal direction. At this time, in the present embodiment, a plurality of injection ports 11 are formed in the cleaning nozzle 3 at intervals in the longitudinal direction. Further, at least one of the ejection openings 11 is formed to eject the liquid in a direction other than the up-and-down direction (that is, directly above and below). Thereby, the washing nozzle 3 can be rotated by the jet flow from the injection port 11.

The cleaning nozzle 3 of the present embodiment is formed of a tubular member that is closed at both end portions in the longitudinal direction. The cross section of the tubular member may be substantially elliptical or the like, but is substantially rectangular in the present embodiment. At this time, the long sides of the substantially rectangular cross section of the cleaning nozzle 3 are arranged horizontally, and the short sides are arranged vertically. Further, a plurality of injection ports 11 are formed in the cleaning nozzle 3 at intervals in the longitudinal direction.

In the example of the drawing, one of the longitudinal direction of the cleaning nozzle 3 (the left half of the second drawing) is formed at the center in the longitudinal direction of the cleaning nozzle 3, and an ejection port is formed on one side in the short-side direction. 11. In the other side of the longitudinal direction of the cleaning nozzle 3 (the right half of FIG. 2), the ejection opening 11 is formed on the other side surface in the short-side direction. In this case, it is preferable that the injection port 11 having a predetermined size and shape is formed at a predetermined interval in a point symmetrical manner with the center of the cleaning nozzle 3 (the central portion in the longitudinal direction and the central portion in the short-side direction) as a boundary. Further, in the illustrated example, the injection ports 11 are also formed on both end faces of the cleaning nozzle 3 in the longitudinal direction.

The side surface in the short-side direction or the end surface in the longitudinal direction of the cleaning nozzle 3 may be a vertical surface (a surface perpendicular to the upper and lower surfaces of the cleaning nozzle 3), but is formed as inclined surfaces 3a, 3b in the illustrated example. Further, an injection port 11 is formed on the inclined surface 3a. Specifically, both end portions in the short-side direction of the cleaning nozzle 3 are formed with an inclined surface 3a that is inclined inward in the upward and downward directions toward the outer side in the short-side direction, and the injection port 11 is formed in the inclined surface 3a. Further, both end portions in the longitudinal direction of the cleaning nozzle 3 are formed with an inclined surface 3b that is inclined inward in the upward and downward directions toward the outer side in the longitudinal direction, and the injection port 11 is formed in the inclined surface 3b. Each of the injection ports 11 is vertically opened with respect to each of the inclined faces 3a, 3b. Further, the shape of each of the injection ports 11 is not particularly limited, and is usually a circular hole.

The injection port 11 formed in the cleaning nozzle 3 is formed such that the longer the separation distance from the center of rotation (the central portion in the longitudinal direction) of the cleaning nozzle 3, the larger the diameter, and/or the greater the number. For example, (A) the injection ports 11 are formed at equal intervals along the longitudinal direction of the cleaning nozzle 3, but the diameter becomes larger as it goes toward the outer peripheral side of the cleaning nozzle 3. Alternatively, (B) assuming that the long side dimension of the washing nozzle 3 is divided into a plurality of units at a certain pitch (that is, in such a manner as to increase from a rotation center every predetermined size), it is formed in such a manner that the more the cleaning nozzle is The number of units on the outer peripheral side of the third unit is larger in the number of the injection ports 11 (usually the holes of the same diameter) formed in each unit. Alternatively, the (C) injection port 11 is formed by a gap of the same diameter in the longitudinal direction of the cleaning nozzle 3, but is formed closer to the outer peripheral side of the cleaning nozzle 3 (adjacent to the longitudinal direction of the cleaning nozzle 3). The separation distance between the ejection openings 11 becomes shorter. Alternatively, the ejection openings 11 of the cleaning nozzles 3 may be formed in such a manner as to combine these (A) to (C). In short, the cleaning nozzle 3 is formed such that the opening area is increased as the outer peripheral side increases.

In the example of the drawing, the ejection opening 11 formed on the side surface in the short-side direction of the cleaning nozzle 3 is formed as follows. In other words, the cleaning nozzles 3 are formed with the ejection openings 11 at equal intervals along the longitudinal direction, so that the separation distance from the rotation center of the cleaning nozzles 3 becomes longer, and the diameter of the ejection openings 11 becomes larger.

As described above, according to the washer 1 of the present embodiment, the injection port 11 formed in the washing nozzle 3 is formed such that the longer the separation distance from the center of rotation, the larger the diameter and/or the number thereof. Therefore, the injection flow rate on the outer peripheral side can be increased as compared with the case where the injection ports 11 having the same diameter are formed at regular intervals. Thereby, the entire object to be washed can be uniformly washed without depending on the position of the cleaning nozzle 3.

Therefore, it is preferable that the difference between the liquid ejection flow rates per unit area on the center side and the outer circumferential side of the rotation surface of the cleaning nozzle 3 is a predetermined amount or less (preferably 0). In other words, when the rotation region of the cleaning nozzle 3 is viewed in a plan view of the washer 1, it is preferable that the center side and the outer circumference side of the rotation of the cleaning nozzle 3 have a circular rotation area (even a substance to be cleaned). The diameter, the number, and the formation position of the injection port 11 are adjusted in such a manner that the difference in the liquid injection flow rate per unit area is reduced. Thereby, the entire object to be washed can be uniformly washed without depending on the position of the cleaning nozzle 3.

More specifically, regarding the region between the center and the outer end of the longitudinal direction of the cleaning nozzle 3 (the right half or the left half of FIG. 3), it is assumed that the dimension will be along the longitudinal direction of the cleaning nozzle 3. The division is divided into two or more imaginary units in such a manner that the right half of the third figure is equally divided in the left-right direction. As described above, the rotation area of the cleaning nozzle 3 is circular as viewed from above, and the virtual unit forms a concentric circular injection area from the center of the circle. When the ejection regions of the ejection ports 11 of the respective imaginary units are compared with each other, the ejection opening 11 with respect to the cleaning nozzles 3 is adjusted so that the difference in the ejection flow rate of the liquid ejected per unit area is equal to or less than a predetermined amount. Thereby, the entire object to be washed can be uniformly washed without depending on the position of the cleaning nozzle 3. Further, one imaginary unit may be provided with one injection port 11, or a plurality of imaginary units may be provided.

The washer 1 of the present invention is not limited to the structure of the above embodiment, and can be appropriately changed. In particular, if the cleaning tank 2 for accommodating the object to be cleaned and the cleaning nozzle 3 having a plurality of injection ports 11 formed at intervals in the longitudinal direction are provided, the cleaning nozzle 3 is rotatably held in the cleaning tank 2, and the ejection port 11 is provided. The longer the separation distance is formed from the center of rotation of the cleaning nozzle 3, the larger the diameter and/or the larger the number, the other structures can be appropriately changed.

For example, in the above embodiment, the injection port 11 is formed on the side surface of the cleaning nozzle 3 in the short-side direction, and the size of the injection port 11 is adjusted (the diameter is larger toward the outer side in the longitudinal direction), but it is also possible to clean the nozzle. The upper surface and/or the lower surface of 3 forms an ejection opening 11, and the size of the ejection opening 11 is adjusted. At this time, as described above, in order to rotate the cleaning nozzle 3 by the jet flow from the ejection port 11, at least one ejection opening 11 is also formed on the side surface in the short-side direction of the cleaning nozzle 3, and is oriented in the up-and-down direction (that is, Spray the liquid in the direction just above and below. Further, in addition to adjusting the size of the injection port 11, the number may be adjusted as described above.

Further, the cleaning nozzle 3 may be formed to be tapered from the center of rotation toward the outer peripheral side (the dimension in the short-side direction is small). Further, the shape of the cleaning tank 2 and/or the liquid storage unit 4 in plan view is not limited to a substantially rectangular shape, and may be a circular shape or an elliptical shape, and may be a polygonal shape other than a rectangular shape.

Further, in the above embodiment, the blower may be further provided to dry the object to be cleaned after washing. At this time, the wet object to be cleaned after washing can be dried by the warm air supplied to the washing tank 2.

Claims (3)

 A cleaning device comprising: a cleaning tank for accommodating an object to be cleaned; and a cleaning nozzle having a plurality of ejection ports formed at intervals in a longitudinal direction, wherein the cleaning nozzle is rotatably held in the cleaning tank, and the ejection port is The longer the separation distance is formed from the center of rotation of the cleaning nozzle, the larger the aperture and/or the greater the number.    The cleaning device according to the first aspect of the invention, wherein the cleaning nozzle has the injection port formed at equal intervals along a longitudinal direction, and the separation distance from a rotation center of the cleaning nozzle is longer, the injection port The larger the caliber.    The cleaner according to the first or second aspect of the invention, wherein the jet opening on the center side of the rotating surface of the washing nozzle and the jet port on the outer peripheral side make the difference in the liquid jet flow rate per unit area a predetermined amount. the following.