JP2022092904A - Washing method - Google Patents

Abstract

To provide a washing method capable of washing an entire container appropriately.SOLUTION: A washing method for washing a container 30 includes a process for heating a container 30 by a heating device 83 and injecting washing water to the container 30 while holding the container 30 in a vertically erected posture. It is desirable to execute the process so as to heat the container 30 in a direction different from the direction for injecting washing water to the container 30. The process includes, in this order, a first process for injecting steam to the container 30 and injecting washing water to the container 30, and a second process for injecting washing water to the container 30. It is desirable that the first process is executed to inject steam to the container 30 from below the container 30, and inject washing water to the container 30 from the side of the container 30, and the second process is executed to inject washing water to the container 30 from the side of the container 30.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cleaning method for cleaning a container.

Conventionally, a cleaning method for cleaning tableware such as plates and trays and cooking utensils such as hotel bread (hereinafter collectively referred to as "containers") has been proposed. For example, one of the conventional cleaning methods is to arrange the containers after being used for cooking etc. on the conveyor so as to line them up, and spray cleaning water or steam toward the containers while continuously transporting the containers together with the conveyor. As a result, the container is cleaned (see, for example, Patent Document 1).

Jitsukaihei No. 4-32660

In the above-mentioned conventional cleaning method, particularly in the steam treatment chamber, the cleaning water is sprayed from above the steam treatment chamber, and steam is ejected from below the steam treatment chamber. As a result, the temperature in the steam processing chamber is maintained at 50 to 60 degrees. For example, when the container is placed on a conveyor so that the opening surface of the container faces downward, it is ejected from below. The smooth flow of steam is obstructed by the accumulated steam staying inside the container, and not only the heat of the steam cannot be effectively applied, but also the washing water sprayed from above is applied to the opening surface of the container. May not be enough to clean the inside of the container. As described above, the conventional cleaning method may not be able to properly clean the entire container.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cleaning method capable of appropriately cleaning the entire container.

In order to achieve the above-mentioned object, the cleaning method according to the present invention is characterized by the following [1] to [9].
[1]
A cleaning method for cleaning containers,
The present invention comprises a step of heating the container with a heating device and injecting washing water toward the container while holding the container in an upright posture.
Must be a cleaning method.
[2]
In the cleaning method described in [1] above,
The step is
The container is heated from a direction different from the direction in which the washing water is sprayed onto the container.
Must be a cleaning method.
[3]
In the cleaning method according to the above [1] or the above [2],
The step is
The first step of injecting steam toward the container and injecting washing water toward the container, and
A second step of injecting wash water toward the container is included in this order.
Must be a cleaning method.
[4]
In the cleaning method described in [3] above,
The first step is
It is executed so that steam is sprayed from the lower side of the container toward the container and washing water is sprayed from the side of the container toward the container.
The second step is
It is carried out to inject wash water from the side of the container toward the container.
Must be a cleaning method.
[5]
In the cleaning method according to the above [3] or the above [4],
The first step is
It is executed on the upstream side of the transport path while transporting the container along a predetermined transport path.
The second step is
It is executed on the downstream side of the transport path while transporting the container along the transport path.
Must be a cleaning method.
[6]
The cleaning method according to any one of the above [3] to the above [5].
The first step is
It is executed to inject the washing water toward the container at the first injection pressure for the first injection time.
The second step is
It is executed to inject the washing water toward the container at the second injection pressure for the second injection time.
The first step is
The first injection pressure is lower than the second injection pressure, and the first injection time is longer than the second injection time.
Must be a cleaning method.
[7]
The cleaning method according to the above [6].
Further provided is a step of collecting the washing water after the injection in the first step and the washing water after the injection in the second step, and boosting the recovered washing water so that the collected washing water can be injected at the second injection pressure. ,
The first step is
It is executed so that the washing water after the pressurization is depressurized and injected toward the container at the first injection pressure.
The second step is
It is executed so as to inject the washing water after boosting toward the container at the second injection pressure.
Must be a cleaning method.
[8]
In the cleaning method according to any one of the above [3] to the above [7],
At least the first step of the first step and the second step is
It is executed so that the temperature of the atmosphere for holding the container is adjusted to be 90 degrees or higher and the temperature of the washing water sprayed toward the container is adjusted to be 90 degrees or higher.
Must be a cleaning method.
[9]
In the cleaning method described in [8] above,
At least the first step of the first step and the second step is
The first operation mode in which the washing water having the first temperature and the detergent concentration of the first concentration is sprayed, and the second temperature having a temperature higher than the first temperature and the detergent concentration being higher than the first concentration, the second concentration. It is possible to switch between the second operation mode in which the washing water is sprayed and the second operation mode.
In the second operation mode, the temperature of the atmosphere holding the container is adjusted to be 90 degrees or higher, and the temperature of the washing water sprayed toward the container is adjusted to be 90 degrees or higher. Be done,
Must be a cleaning method.

According to the cleaning method having the configuration of [1] above, the container held in an upright posture is heated by a heating device and the cleaning water is sprayed. In other words, in addition to heating by the temperature of the washing water itself, heating by another heat source (that is, a heating device) is applied to the container. As a result, the temperature of the container can be kept at a temperature suitable for washing, and the temperature drop of the washing water can be suppressed to wash the container at a temperature suitable for washing. Further, since the container is in an upright state, the washing water is spread throughout the container to wash away the dirt on the container, and the washing water after washing can be quickly discharged to the lower part of the container without being retained on the container. Therefore, it is possible to smoothly supply the cleaning water having excellent cleaning power and discharge the cleaning water after cleaning. Therefore, the cleaning method of this configuration can properly clean the entire container.

The above-mentioned "heating" and the above-mentioned "washing" may be performed at the same time or separately. Further, the above-mentioned "heating" method is not particularly limited, and may be performed by a hot fluid such as steam, superheated steam, hot water or hot air, or heat from a heat source due to radiant heat such as an electric heater or a heat exchange pipe. It may be performed by radiation, or it may be performed by heat generation of the container itself due to electromagnetic induction or the like. Of these, steam or superheated steam is preferably used because it can moisten the dirt on the container and facilitate cleaning.

According to the cleaning method having the configuration of [2] above, the container is heated from a direction different from the direction in which the cleaning water is sprayed onto the container. As a result, one of the heating and the spraying of the washing water is less likely to interfere with the other, and the washing effect in which both the heating and the spraying of the washing water are combined is more appropriately exhibited. Therefore, the cleaning ability of the container can be further improved.

According to the cleaning method having the configuration of [3] above, the first step of injecting steam toward the container and the washing water toward the container, and the second step of injecting the washing water toward the container. In this order. As a result, for example, rough cleaning (so-called rough cleaning) is performed while moistening the dirt in the first step to make it easy to remove the dirt, and full-scale cleaning (so-called main cleaning) to remove the dirt in the second step. )It can be performed. By performing such multi-step cleaning, the cleaning capacity of the container can be further improved.

According to the cleaning method having the configuration of [4] above, the first step was executed so as to inject steam from the bottom of the container toward the container and inject cleaning water from the side of the container toward the container. After that, the second step is executed so that the washing water is sprayed from the side of the container toward the container. As a result, compared to the case where the washing water is sprayed from above the container while steam is spread over the entire surface of the container in the posture to moisten the dirt on the container, the washing water is more efficiently collided with the container and the container becomes dirty. Can be dropped powerfully. Therefore, the cleaning ability of the container can be further improved.

According to the cleaning method having the configuration of [5] above, the first step is executed on the upstream side of the transport path while the container is transported along the predetermined transport path, and the second step is performed on the downstream side of the transport path. Will be executed. This makes it possible to continuously wash a large number of containers. Therefore, a large number of containers can be efficiently washed.

According to the cleaning method having the configuration of [6] above, in the first step, the washing water is sprayed at a lower pressure than in the second step for a longer time than in the second step. As a result, the stains on the container can be sufficiently moistened in the first step, and then the stains can be efficiently washed off with high-pressure washing water in the second step. Therefore, the cleaning ability of the container can be further improved.

According to the cleaning method having the configuration of [7] above, the cleaning water after cleaning in the first step and the second step is collectively collected. The recovered washing water is pressurized by a pump or the like, then depressurized and used for washing in the first step, and is used for washing in the second step in the state of being boosted. Therefore, compared to the case where the cleaning water used in each of the first process and the second process is separately and independently pressurized, the equipment and piping for boosting can be rationalized, and the equipment to which the cleaning method is applied can be downsized. Can be planned.

According to the cleaning method having the configuration of [8] above, the cleaning water having a temperature of 90 degrees or higher is sprayed toward the container in an environment where the atmospheric temperature is 90 degrees or higher. Thereby, the cleaning ability of the container can be further improved. The atmospheric temperature and the water temperature of the washing water may be appropriately adjusted in consideration of the nature of dirt on the container to be washed, the heat insulating structure of the device to which the washing method is applied, and the like.

According to the cleaning method having the configuration of [9] above, it is possible to switch between a plurality of operation modes in which the temperature of the cleaning water and the detergent concentration are different, at least in the first step. As a result, cleaning in the first step can be performed in an operation mode suitable for dirt on the container. Further, in the second step, the washing water having a temperature of 90 ° C. or higher is sprayed toward the container in an environment where the atmospheric temperature is 90 ° C. or higher. As a result, the container that has been washed in the first step can be washed more efficiently in the second step. Therefore, the cleaning ability of the container can be further improved.

As described above, according to the present invention, it is possible to provide a cleaning method capable of appropriately cleaning the entire container.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

FIG. 1 is a side view showing an outline of an internal structure of a washing machine including a washing device for executing the washing method according to the embodiment of the present invention. FIG. 2 shows a transport device according to an embodiment of the present invention in a state of holding a container, FIG. 2 (a) is a side view of the entire transport device, and FIG. 2 (b) is a part of the transport device. It is a top view which shows. FIG. 3 is an enlarged perspective view showing a container held by the transport device. 4A and 4B show a holder held by the transport device, FIG. 4A is a perspective view of the holder as viewed from the front side, and FIG. 4B is a perspective view of the holder as viewed from the rear side. 5 (a) is an enlarged view of a part A of FIG. 2 (b), FIG. 5 (b) is an enlarged view of a part B of FIG. 2 (b), and FIG. 5 (c) is a diagram. 5 (b) is a sectional view taken along the line CC. FIG. 6 is a side view showing a part of the washing device included in the washing machine shown in FIG. 7 (a) is an enlarged view of a part D (water diversion device) of FIG. 6, FIG. 7 (b) is a front view of a rough washing water injection nozzle, and FIG. 7 (c) is a main washing. It is a front view of the water injection nozzle, and FIG. 7D is a sectional view taken along the line EE of FIG. 7B and a sectional view taken along the line FF of FIG. 7C. 8 (a) is a sectional view taken along the line GG of FIG. 7 (b), and FIG. 8 (b) is an exploded perspective view of the decompression section shown in FIG. 8 (a). 9 (a) is a front view showing a state of rough cleaning, FIG. 9 (b) is a front view showing a state of main cleaning, and FIG. 9 (c) is a top surface showing a state of rough cleaning. It is a figure. FIG. 10A is a front view showing a state of finish cleaning, and FIG. 10B is a side view showing a state of finish cleaning. FIG. 11 is a top view showing a heat exchanger included in the washing machine shown in FIG. 1. FIG. 12 is a perspective view showing a housing defining a heat exchange chamber. 13 is a view showing a state of main cleaning according to a modified example, FIG. 13 (a) is a front view thereof, FIG. 13 (b) is a top view thereof, and FIG. 13 (c) is a top view thereof. , It is a side view. FIG. 14 is a side view showing an outline of the internal structure of the washing machine according to another modified example. 15A and 15B show a washing machine according to a reference example, FIG. 15A is a front view thereof, and FIG. 15B is a side view thereof.

<Embodiment>
Hereinafter, a washing machine 1 having a washing device 3 for executing the washing method according to the embodiment of the present invention will be described with reference to the drawings. In the washing machine 1 shown in FIG. 1, a plurality of containers 30 thrown in from a charging port 21 provided on the outer wall of the housing of the washing machine 1 (not shown) are continuously fed by a transport device 2 (see FIG. 2A and the like). A device that is washed by the washing device 3 (see FIG. 6 and the like) of the washing machine 1 and discharges the washed container 30 from an outlet 22 provided on the outer wall of the housing of the washing machine 1 (not shown). be. As the container 30 to be washed by the washing machine 1, tableware such as plates and trays and cooking utensils such as hotel bread can be assumed.

In this example, the hotel bread shown in FIG. 3 is adopted as the container 30. Specifically, as shown in FIG. 3, the container 30 has a substantially rectangular flat plate-shaped bottom plate 31 having a longitudinal direction, a substantially rectangular frame-shaped side plate 32, and the entire circumference from the peripheral edge of the protruding end of the side plate 32. It is a substantially rectangular parallelepiped metal thin-bottomed container having a flange portion 33 extending outward. The peripheral edge of the protruding end of the side plate 32 defines an "opening" of the container 30. The side plate 32 is provided with a return portion 34 (see also FIG. 5C) that is folded back toward the bottom plate 31 from the peripheral edge of the extending end of the flange portion 33 to the entire circumference.

Hereinafter, the front surfaces of the bottom plate 31, the side plate 32, the flange portion 33, and the return portion 34 in the container 30 are collectively referred to as the “opening surface” of the container 30, and the bottom plate 31, the side plate 32, and the flange portion 33 in the container 30 are collectively referred to. And the back surface of the return portion 34 may be collectively referred to as the "back surface" of the container 30.

Hereinafter, for convenience of explanation, as shown in FIGS. 1 and 2, "front-back direction", "left-right direction", "vertical direction", "front", "rear", "left", "right", "top" , And "below" are defined. The "front-back direction", "left-right direction", and "vertical direction" are orthogonal to each other. The front-rear direction coincides with the transport direction (direction of the transport path) of the container 30 by the transport device 2, the front side corresponds to the downstream side of the transport path, and the rear side corresponds to the upstream side of the transport path. is doing.

<Overall configuration of washing machine 1>
First, the overall configuration of the washing machine 1 will be described. As shown in FIG. 1, the washing machine 1 as a whole has a substantially rectangular parallelepiped housing long in the front-rear direction. The housing of the washing machine 1 is configured by combining a plurality of substantially rectangular parallelepiped housings. Specifically, the housing of the washing machine 1 mainly includes a lower housing 11 extending in the front-rear direction, an inlet-side housing 12 located above the rear end of the lower housing 11, and an inlet-side housing. The cleaning chamber housing 13 adjacent to the front side of the body 12 and located on the upper side of the lower housing 11, and the outlet side housing adjacent to the front side of the cleaning chamber housing 13 and located on the upper side of the front end portion of the lower housing 11. It is composed of a body 14. The upper surface of the cleaning chamber housing 13 is located above the upper surfaces of the inlet-side housing 12 and the outlet-side housing 14. An inlet-side blower housing 15 is provided adjacent to the rear side of the upper part of the cleaning chamber housing 13 on the upper side of the entrance-side housing 12, and a cleaning chamber housing 13 is provided on the upper side of the outlet-side housing 14. An outlet side blower housing 16 is provided adjacent to the front side of the upper portion.

As shown in FIG. 1, the lower housing 11 defines the lower space R1, the inlet-side housing 12 defines the entrance-side space R2, and the cleaning chamber housing 13 defines the cleaning chamber R3 and heat exchange. The chamber R5 is defined, the outlet side housing 14 defines the exit side space R4, the inlet side blower housing 15 defines the entrance side blower space R6, and the exit side blower housing 16 defines the exit side space R4. The side blower space R7 is defined. The entrance side space R2, the cleaning chamber R3, the exit side space R4, and the lower space R1 are vertically partitioned by the upper wall 17 (see FIG. 1) of the lower housing 11. The entrance side space R2, the cleaning chamber R3, and the exit side space R4 communicate with each other over the entire area in the front-rear direction. The cleaning chamber R3 and the heat exchange chamber R5 are vertically partitioned by a bottom wall 102 (see also FIG. 12) of the housing 101 described later, which defines the heat exchange chamber R5. The inlet-side space R2 and the inlet-side blower space R6 communicate with each other vertically via an inlet-side suction port 18 (see FIG. 1) formed on the upper wall of the inlet-side housing 12. The outlet side space R4 and the outlet side blower space R7 communicate with each other vertically via an outlet side suction port 19 (see FIG. 1) formed on the upper wall of the outlet side housing 14. The inlet-side blower space R6 and the heat exchange chamber R5 communicate with each other back and forth via the inlet-side inlet 106 (see FIG. 12) formed in the housing 101 defining the heat exchange chamber R5. The outlet side blower space R7 and the heat exchange chamber R5 communicate with each other back and forth via the outlet side inlet 105 (see FIG. 12) formed in the housing 101 defining the heat exchange chamber R5.

On the left side wall of the inlet-side housing 12, a loading port 21 for loading the container 30 is provided. An outlet 22 for discharging the washed container 30 is provided on the front wall of the outlet-side housing 14. On the left side wall of the cleaning chamber housing 13, a pair of operation doors (not shown) that are arranged so as to be lined up in the front-rear direction and can be opened and closed are provided. The left side wall of the lower housing 11 is composed of a plurality of removable side lids (not shown) arranged so as to be arranged in the front-rear direction. The upper wall of the cleaning chamber housing 13 is composed of a plurality of removable upper lids (not shown) arranged so as to be lined up in the front-rear direction. The plurality of top lids define the heat exchange chamber R5 together with the housing 101 (see FIG. 12). A steam exhaust stack 26 that protrudes upward and penetrates in the vertical direction is provided at the front end portion of the upper lid located on the most front side. The housing of the washing machine 1 is supported on the floor surface via a plurality of legs 27 extending downward from the lower wall of the lower housing 11.

A heat insulating material is sandwiched between the wall surfaces of the entire housing of the washing machine 1. As a result, the temperature of the entire surface of the housing of the washing machine 1 is set to such a temperature that it is not hot even if it is touched by hand. Further, since both the operation door opened at the time of maintenance and the side lid removed at the time of maintenance etc. are provided on the left side wall of the housing of the washing machine 1, the right side wall of the washing machine 1 can be used. The washing machine 1 can be installed in a state of being close to the wall surface of another device or facility.

<Structure of transport device 2>
Next, the transport device 2 included in the washing machine 1 will be described. As shown in FIGS. 1 to 4, the transport device 2 includes a holder 50 for holding the container 30 and a moving mechanism 40 for moving the holder 50 along the transport path. First, the moving mechanism 40 will be described.

As shown in FIGS. 1 to 4, a drive shaft 41 extending in the left-right direction is rotatably supported in the lower portion of the exit side space R4. The drive shaft 41 is integrally provided with a pair of left and right drive gears 42 arranged at intervals in the left-right direction. Similarly, a driven shaft 43 extending in the left-right direction is rotatably supported in the lower portion of the inlet side space R2. The driven shaft 43 is integrally provided with a pair of left and right driven gears 44 arranged at intervals in the left-right direction. A pair of left and right transport chains 45 are hung around a pair of left and right drive gears 42 and a pair of left and right driven gears 44 so as to extend in the front-rear direction with a gap in the left-right direction. A plurality of holders 50 are fixed to the pair of left and right transport chains 45 so as to be arranged at predetermined intervals in the extending direction of the transport chains 45.

A motor 46 is provided at the front end of the lower space R1. A motor gear 47 is integrally provided on the rotating shaft of the motor 46. The drive chain 48 is hung around the motor gear 47 and the drive gear 42 fixed to the drive shaft 41 and for driving the transport chain 45 as described later so as to extend substantially in the vertical direction. As described above, the moving mechanism 40 is composed of a drive shaft 41, a driven shaft 43, a transport chain 45, a motor 46, and a drive chain 48.

In the moving mechanism 40, when the rotating shaft of the motor 46 is rotationally driven at a constant rotational speed clockwise when viewed from the left side, the driving torque thereof is the drive chain 48, the drive gear 42 (drive shaft 41), the transport chain 45, and the like. It is sequentially transmitted to the driven gear 44 (driven shaft 43). As a result, the transport chain 45 is rotationally driven clockwise at a constant rotational speed when viewed from the left side, so that the holder 50 (that is, the container 30) is moved from the inlet side space R2 through the cleaning chamber R3 to the outlet side space R4. A transport path for transporting forward at a constant speed along the front-rear direction is constructed.

The driven shaft 43 of the moving mechanism 40 is arranged at the rear end of the inlet side space R2. In the inlet side space R2, a plurality of (for example, 6) holders 50 fixed to the transport chain 45 are transported side by side at predetermined intervals. The input port 21 that opens into the entrance side space R2 is designed to open to these plurality of holders 50.

Next, the holder 50 will be described. In the holder 50, as shown in FIGS. 2 to 5, the container 30 stands up and down in a direction in which the longitudinal direction of the container 30 is along the vertical direction, and the opening of the container 30 is angled from the front to the left side. It functions to hold the container 30 in a posture in which the right end of the container 30 is located in front of the left end of the container 30 in a direction tilted by θ (<90 degrees, see FIG. 2B). In other words, the container 30 is held in a state of rising along the vertical axis and being tilted toward the left side around the vertical axis by an angle θ. The angle θ is preferably 45 degrees or more (60 degrees in this example).

Specifically, the holder 50 is formed by pressing and bending a single metal plate, and as shown in FIG. 4 and the like, a rectangular flat plate-shaped connecting portion extending in a strip shape. It includes a 51, a first holding portion 52 provided at one end of the connecting portion 51, and a second holding portion 53 provided at the other end of the connecting portion 51. The first holding portion 52 functions to hold the lower right end portion of the container 30, and the second holding portion 53 functions to hold the lower left end portion of the container 30. As shown in FIGS. 2B and 3, the connecting portion 51 has a pair of left and right connecting portions 51 having the first holding portion 52 and the second holding portion 53 located on the right and left sides, respectively, and the connecting portion 51 extending in the left-right direction. One end of the connecting portion 51 is fixed to the right transport chain 45 so as to straddle the transport chain 45, and the other end of the connecting portion 51 is fixed to the left transport chain 45.

As shown in FIGS. 4 and 5, the first holding portion 52 is composed of a front end wall 54, a front support wall 55, and a front guide wall 56. The front end wall 54 extends in the left-right direction along the front end edge above the front end edge of one end of the connecting portion 51. A rectangular hole penetrating the front end wall 54 is provided in the lower portion of the front end wall 54 so that water droplets and the like in the first holding portion 52 can flow out. The front support wall 55 extends rearward from the right end of the front end wall 54 and projects upward from the right end edge of one end of the connecting portion 51. The front guide wall 56 extends from the left end portion of the front end wall 54 in an inclined manner toward the rear and left, and protrudes upward from the connecting portion 51. In other words, the anterior guide wall 56 is tilted away from the anterior support wall 55 (i.e., opens posteriorly) towards the rear. The inclination angle θ shown in FIG. 5A of the front guide wall 56 coincides with the angle θ shown in FIG. 2B of the container 30 held by the holder 50.

As shown in FIGS. 4 and 5, the second holding portion 53 includes a rear end wall 57, a rear support wall 58, and a rear guide wall 59. The rear end wall 57 projects upward from the rear end edge of the other end of the connecting portion 51 and extends in the left-right direction. The rear support wall 58 extends forward from the left end of the rear end wall 57 and projects upward from the left end edge of the other end of the connecting portion 51. The rear guide wall 59 is inclined forward and to the left from the right end portion of the rear end wall 57, and approaches the rear support wall 58 from the upper side to the lower side (that is, opens upward). It extends at an angle and protrudes upward from the connecting portion 51. The upper end surface 59a (see FIG. 4A) of the rear guide wall 59 is a tapered surface that inclines so as to approach the connecting portion 51 from the rear to the front. A notch 59b (particularly, see FIG. 5C) that is recessed toward the rear is formed at the lower end of the rear guide wall 59 (a portion near the upper surface of the connecting portion 51).

The plurality of holders 50 having the above configuration are fixed to the transport chain 45 so as to be lined up at predetermined intervals in the extending direction (that is, the front-rear direction) of the transport chain 45 of the moving mechanism 40 (FIG. 2 and FIG. See Fig. 3 etc.). The container 30 stands up and down in a direction in which the longitudinal direction of the container 30 is along the vertical direction, and the opening of the container 30 is inclined from the front to the left side. A second holder 50 that is inserted and held from above into the holder 52 (see FIGS. 3 and 5 (a)) and whose lower left end is located, for example, second rearward from one holder 50. 2 It is inserted into the holding portion 53 from above and held (see FIGS. 3 and 5 (b)). As a result, the container 30 stands up and down, and the right end portion of the container 30 is oriented so that the opening of the container 30 is tilted by an angle θ (<90 degrees, see FIG. 2B) from the front to the left side. It is held in a posture located in front of the left end of the container 30.

Here, when the lower right end portion of the container 30 is held by the first holding portion 52, the front guide wall 56 is inclined so as to open rearward, so that the front guide wall 56 and the front support wall 55 are used. The lower right end of the container 30 can be held in an appropriate holding position while accepting and guiding the lower right end of the container 30 toward the front end wall 54. Further, since the rear guide wall 59 is inclined so as to open upward, the lower right end portion held by the first holding portion 52 when the lower left end portion of the container 30 is held by the second holding portion 53. When the container 30 is rotated around the container 30, the rear guide wall 59 and the rear support wall 58 receive the lower left end portion of the container 30 and guide the container 30 toward the rear end wall 57 while guiding the lower left end portion of the container 30. It can be held in an appropriate holding position.

Further, since the upper end surface 59a of the rear guide wall is a tapered surface as described above, even if the lower left end portion of the container 30 rides on the upper end surface 59a of the rear guide wall 59, the lower left end portion of the container 30 can be used. By sliding forward on the upper end surface 59a, the lower left end portion of the container 30 can be smoothly guided to the inside of the second holding portion 53. Further, the return portion 34 located at the lower left end portion of the container 30 held by the second holding portion 53 engages with the notch portion 59b provided at the lower end portion of the rear guide wall 59 (FIG. 5 (c)). reference). This prevents the lower left end of the container 30 from rising from the second holding portion 53.

The container 30 held by the holder 50 as described above may be tilted toward the back surface side of the container 30 due to the position of its own center of gravity. Even if the container 30 is tilted in this way, as shown in FIGS. 1 and 3, the transport guide plate 49 supports the back surface of the container 30 so that the container 30 stands up and down as described above. It is possible to maintain the original posture. The transport guide plate 49 is arranged so as to extend in the front-rear direction above the transport chain 45 on the right side from the inlet side space R2 to the outlet side space R4 via the cleaning chamber R3.

As shown in FIG. 2B, each of the plurality of containers 30 is tilted in the front-rear direction and stands up in the up-down position, and a predetermined interval (= pitch between adjacent holders 50) is provided on the transport chain 45. It is held by using a plurality of holders 50 so as to be arranged in the front-rear direction. As a result, the containers 30 adjacent to each other in the front-rear direction are arranged so that parts of the containers 30 overlap each other in the front-rear direction. As a result, the transport device 2 can be miniaturized in both the left-right direction and the transport direction (front-back direction) orthogonal to the transport direction while holding and transporting the plurality of containers 30 at a higher density.

<Action / effect of transport device 2>
According to the transport device 2 according to the present embodiment, the holder 50 for holding the container 30 holds the container 30 in an upright posture with respect to the transport path, and also holds the lateral right end of the container 30 and the container. The side left end of the 30 is held so as to be in a different position before and after the transport path. In other words, the container 30 is transported along the transport path in a state of rising along the vertical axis and tilting laterally around the vertical axis. As a result, the transport device 2 can be miniaturized in both the left-right direction and the transport direction (front-back direction) orthogonal to the transport direction while holding and transporting the container 30 at a higher density than the conventional transport device described above. For example, when the transport device 2 is applied to the cleaning device 3 described later, even if the container 30 is arranged at a high density, the container 30 can be sprayed with cleaning water or the like from the vertical direction or the side of the container 30. The entire surface including the opening surface and the back surface of 30 can be properly cleaned. As described above, the transport device 2 according to the present embodiment can appropriately transport a large number of containers 30 and can be miniaturized.

Further, according to the transport device 2, the first holding portion 52 that holds the lower right end portion of the container 30 and the second holding portion 53 that holds the lower left end portion of the container 30 behind the transport path from the lower right end portion. And, the container 30 is held. As a result, the container 30 can be held by the holder 50 by placing the container 30 from above the holder 50. Therefore, the work of holding the container 30 by the moving holder 50 by the moving mechanism 40 becomes easy, and the work efficiency at the time of actual use of the transport device 2 can be improved. Further, by supporting the weight of the container 30 below the container 30, the posture of the container 30 at the time of transportation can be stabilized.

Further, according to the transport device 2, the front end wall 54 and the front support wall 55 of the first holding portion 52 of the holder 50, and the rear end wall 57 and the rear support wall 58 of the second holding portion 53 of the holder 50. And, the lower left and right ends of the container 30 are held so as to be sandwiched. That is, the lower left and right ends of the container 30 are held so as to be sandwiched by the wall from at least four directions. As a result, the positional deviation of the container 30 is suppressed in both the transport direction (front-back direction) and the left-right direction, and the container 30 can be maintained in an appropriate posture. As a result, for example, when the transport device 2 is applied to the cleaning device 3 described later, even if the container 30 is sprayed with cleaning water or the like, the distance between the adjacent containers 30 is maintained, and the entire surface of the container 30 is properly cleaned. You can maintain the state you can.

Further, according to the transport device 2, the front guide wall 56 included in the first holding portion 52 of the holder 50 is separated from the front support wall 55 as it goes to the rear of the transport path (that is, opens toward the rear). It has an inclined structure. As a result, when the container 30 is held by the first holding portion 52, the front guide wall 56 and the front support wall 55 receive the lower right end portion of the container 30 and guide the container 30 toward the front end wall 54, while lowering the container 30. The right end can be held in an appropriate holding position. Further, the structure in which the rear guide wall 59 included in the second holding portion 53 of the holder 50 is inclined so as to approach the rear support wall 58 (that is, open upward) from the upper side to the lower side of the transport path. Has. As a result, when the container 30 is held by the second holding portion 53, if the container 30 is rotated around the lower right end portion held by the first holding portion 52, the rear guide wall 59 and the rear support wall 58 can be obtained. The lower left end of the container 30 can be held in an appropriate holding position while accepting and guiding the lower left end of the container 30 toward the rear end wall 57. Therefore, the work of holding the container 30 in the holder 50 becomes easier, and the work efficiency of the transport device 2 in actual use can be further improved.

Further, according to the transport device 2, the holder 50 holds the container 30 in a posture in which the container 30 is opened in a direction inclined by 45 degrees or more from the front of the transport path toward the side. In other words, the container is held in a posture in which the opening surface of the container 30 is tilted sideways at an angle of 45 degrees or more around the vertical axis. That is, the container 30 is held so that the size of the container 30 viewed from the transport direction is smaller than the size of the container 30 viewed from the left-right direction orthogonal to the transport direction. As a result, the size of the transport device 2 in the left-right direction can be further reduced. Further, since the container 30 can be held at an appropriate inclination, it is easier to sequentially hold the lateral right end portion and the lateral left end portion of the container 30 on the holder 50 moved by the moving mechanism 40. become.

Further, according to the transport device 2, the holder 50 has a structure in which the first holding portion 52 and the second holding portion 53 are integrated by the connecting portion 51, and a plurality of holdings arranged along the transport path are held. The holder 50 of one of the tools 50 holds the lower right end of the container 30, and the other holder 50 holds the lower left end of the container 30. As a result, the holders 50 themselves can be held in an inclined state in the front and back of the transport path while being arranged so as to be orthogonal to the transport direction. Therefore, it is possible to realize proper holding of the container 30 while avoiding the structure of the transport device 2 from becoming excessively complicated. Further, maintainability such as replacement of the holder 50 can be improved.

In addition, in the transport device 2, the operator holds the container 30 in a state where the opening surface of the container 30 is directed in the transport direction and the container 30 is upright, and the lower right end of the container 30 is attached to the first holding portion 52. Insert the part. At this time, the operator is guided to the front guide wall 56 of the first holding portion 52 tilted by the tilt angle θ (see FIG. 5A), so that the container 30 is held in a state where the tilt angle θ is substantially maintained. Will have. After that, the operator lowers the lower left end portion of the container 30 toward the second holding portion 53. At this time, since the rear guide wall 59 of the second holding portion 53 is open upward, even if the angle of the container 30 is slightly deviated from the inclination angle θ, the lower left end portion of the container 30 is held by the second holding portion. It can be stored inside 53. Further, since the upper end surface 59a of the rear guide wall 59 is a tapered surface, even if the lower left end portion of the container 30 rides on the upper end surface 59a, the lower left end portion of the container 30 is moved to the inside of the second holding portion 53. It can be stored smoothly. In this way, even if the operator is not particularly conscious of the left and right angles of the container 30, the left and right holders 50 can surely hold the container 30. At this time, the lower end portions of the container 30 are at least four walls, that is, the front support wall 55 and the front end wall 54 of the first holding portion 52, and the rear support wall 58 and the rear end wall 57 of the second holding portion 53. Since the container 30 is held and transported while being surrounded by the members, even if the lower left and right ends of the container 30 are displaced back and forth and are in an unstable state, the container 30 is stably transported without falling from the holder 50. be able to. In this way, the container 30 can be transported in a posture in which the opening surface is inclined to the left from the transport direction.

When the lower left end portion and the lower right end portion of the container 30 are held by the first holding portion 52 and the second holding portion 53, respectively, the operator releases the container 30. At this time, the container 30 may move to the back surface side due to its own weight and tilt, but even if it tilts as such, the back surface of the container 30 is supported by the transport guide plate 49 (see FIGS. 1 and 3). , The container 30 can be maintained in the original posture of standing up and down.

Since the opening surface of the container 30 faces sideways at an angle of 45 degrees or more with respect to the transport direction, the length of the container 30 in the left-right direction is shorter than the length in the front-rear direction, and the container 30 is transported in a space-saving manner. Can be done. Further, by holding the lower left and right ends of the container 30, the open surface of the container 30 is erected, and the container 30 in an unstable state facing to the left side can be reliably held and stably transported. can.

As will be described in detail later, when the transport device 2 is applied to the cleaning device 3 described later, the cleaning water is sprayed from the second holding portion 53 side toward the first holding portion 52 side to the opening surface of the container 30. Ru. As a result, the container 30 is pushed toward the first holding portion 52 by the injection pressure of the washing water, and the lower left end portion of the container 30 is also pushed toward the rear guide wall 59 in the second holding portion 53. At this time, since the rear guide wall 59 is inclined so as to spread upward, the lower left end portion of the container 30 tends to be lifted along the inclined surface of the rear guide wall 59 by the injection pressure. However, as described above, since the return portion 34 located at the lower left end portion of the container 30 is engaged with the notch portion 59b of the rear guide wall 59, the container 30 can be prevented from being lifted.

Further, as described above, since the plurality of holders 50 are conveyed to the inlet side space R2 and the input port 21 is open to the plurality of holders 50, the operator can use the plurality of containers 30 at one time. Can be held by the holder 50. Therefore, the operator can efficiently perform the loading operation of the container 30. Further, the operator can perform another operation during the period until all of the plurality of containers 30 charged at one time are transferred to the cleaning chamber R3. Therefore, the worker can efficiently perform a plurality of operations including the container 30 loading operation and another operation.

<Other forms of transport device 2>
The specific structure of the holder 50 for holding the container 30 is not particularly limited. For example, in the transport device 2, the holder 50 is configured to hold both the left and right ends of the container 30 and tilt it sideways. On the other hand, the holder may be configured to hold the central portion of the container 30 in the left-right direction and tilt it sideways. For example, in the transport device 2, the holder 50 holds the lower left and right ends of the container 30. On the other hand, the holder may hold the upper left and right ends of the container 30 or the left and right ends of the vertical center of the container 30.

Further, in the transport device 2, the lower right end portion of the container 30 is held by the first holder 52 of the holder 50 of the plurality of holders 50 arranged along the transport path, and the other holding. The lower left end portion of the container 30 is held by the second holding portion 53 of the tool 50. On the other hand, the lower right end portion and the lower left end portion of the container 30 are the first holding portion 52 and the second holding portion 52 of the one (same) holder 50 among the plurality of holders 50 arranged along the transport path. It may be held by the unit 53.

Further, in the transport device 2, a plurality of holders 50 are fixed to the pair of left and right transport chains 45 so as to straddle the pair of left and right transport chains 45. On the other hand, a plurality of holders 50 may be fixed to a single transport chain 45.

Further, in the transport device 2, the first holding portion 52 and the second holding portion 53 of the holder 50 are connected by a connecting portion 51. On the other hand, the connecting portion 51 may be omitted, and the first holding portion 52 and the second holding portion 53 of the holder 50 may be independent.

Further, in the transport device 2, the lower end portion of the container 30 is held by the holder 50. On the other hand, if the container 30 is held upright and the left and right ends are tilted sideways, for example, the transport chain 45 and the holder 50 are arranged above the container 30 to hold the container 30. It may be hung with the tool 50.

<Structure of cleaning device 3>
Next, the cleaning device 3 included in the cleaning machine 1 will be described. As shown in FIGS. 1, 6 and 7, the cleaning device 3 includes a cleaning water supply system, a steam supply system, and a water supply system in addition to the above-mentioned transport device 2. Hereinafter, first, the washing water supply system will be described.

-Structure of the cleaning water supply system The cleaning water supply system directs the cleaning water used in the rough cleaning process and the main cleaning process, which will be described later, toward the container 30 transported by the transport device 2 in the cleaning chamber R3. It is a system for injecting. Washing water is produced by mixing water and detergent. As the detergent, a detergent that can cope with high temperature and high concentration and has a low foaming type is preferable.

As shown in FIGS. 1 and 6, a cleaning tank 61 for storing cleaning water is provided in the lower part of the cleaning chamber R3. The upper opening of the cleaning tank 61 is covered with a pair of flat plate-shaped tank strainers 62 composed of a mesh (a mesh in which a large number of fine through holes are formed). As shown in FIG. 1, the pair of tank strainers 62 form a part of the upper wall 17 of the lower housing 11.

The left and right side portions of the pair of tank strainers 62 on the upper wall 17 form a pair of inclined surfaces 17a that incline downward toward the tank strainer 62. The cleaning water used in the rough cleaning step and the main cleaning step in the cleaning chamber R3 falls on the pair of inclined surfaces 17a or on the pair of tank strainers 62. The washing water that has fallen on the inclined surface 17a flows down on the inclined surface 17a toward the tank strainer 62. The washing water that has moved onto the tank strainer 62 is collected in the washing tank 61 via the mesh of the tank strainer 62.

Foreign matter and the like (including dirt and the like adhering to the container 30) contained in the washing water moved onto the tank strainer 62 are captured by the tank strainer 62. As a result, the cleaning water in the cleaning tank 61 is kept in a good state with less contamination and sufficient cleaning action. The washing water stored in the washing tank 61 is heated by a steam heater 88 (see FIGS. 1 and 6) described later, and is maintained at a high temperature of 90 ° C. or 70 ° C. The washing water may be heated by an electric heater or by a water heater provided inside or outside the washing machine 1.

A partition plate 17b that protrudes upward and extends in the left-right direction is provided at the boundary between the front inclined surface 17a and the upper wall 17 located on the front side of the front inclined surface 17a in the pair of inclined surfaces 17a. (See FIG. 1). A finishing drainage port 17c is provided on the upper wall 17 located on the front side of the partition plate 17b (see FIG. 1). The water used in the finishing cleaning step described later in the cleaning chamber R3 falls on the upper wall 17 located on the front side of the partition plate 17b and is drained through the finishing drain port 17c. There is. The partition plate 17b is used to prevent such a decrease in the detergent concentration when it is not desirable that the water used in the finish cleaning step is collected in the cleaning tank 61 to reduce the detergent concentration in the cleaning tank 61. It is provided in. Specifically, when cleaning is performed while maintaining a relatively high detergent concentration (for example, 5% or more), it is preferable to provide a partition plate 17b. On the other hand, when cleaning with a relatively low detergent concentration (for example, less than 5%), the amount of detergent added is small, so even if the detergent concentration drops, the detergent concentration can be easily increased by adding detergent again. Since it can be recovered, the washing water may be used efficiently by removing the partition plate 17b and closing the drain port 17c and collecting the water used in the finishing washing step in the washing tank 61.

As shown in FIGS. 1 and 6, the cleaning tank 61 is connected to the suction side of the pump 64 via the pipe 63 in the lower space R1. The discharge side of the pump 64 is connected to the water diversion device 4 located in the cleaning chamber R3 via the pipe 65. Therefore, the pump 64 sucks in the high-temperature washing water stored in the washing tank 61 and discharges it toward the water divider 4 at a predetermined discharge pressure.

<Structure of water diversion device 4>
Hereinafter, the water diversion device 4 will be described. The water divider 4 includes a rough cleaning pipe 73 (rough cleaning water injection nozzle 74, see FIG. 7, etc.) used in the rough cleaning process and a main cleaning pipe 75 (main cleaning water injection nozzle 76) used in the main cleaning process. , Fig. 7 etc.) and functions to supply high temperature wash water at different pressures. The water diversion device 4 is provided in the cleaning chamber R3 at a position on the left side of the transport chain 45 on the left side and at a position on the left side of the container 30 transported by the transport device 2 so as to extend in the vertical direction and the front-rear direction. Has been done.

As shown in FIG. 7, the water diversion device 4 includes a water diversion device main body 66, a main washing side water diversion device 67, a rough washing side water diversion device 68, and a decompression unit 69. The water divider main body 66 is a square tubular pipe that extends in the vertical direction and has both ends open. The lower end of the water divider body 66 is connected to a pipe 65 connected to the discharge side of the pump 64 (see also FIG. 6).

The upper end portion of the water diversion device main body 66 is connected to an intermediate portion of the main cleaning side water diversion device 67 extending in the front-rear direction. The main washing side water diversion device 67 is a square tubular pipe that extends in the front-rear direction and has a front end closed and a rear end open. The rear end of the main washing side water diversion device 67 is connected to the front end of the rough washing side water diversion device 68 extending in the front-rear direction via the decompression unit 69. The rough cleaning side water diversion device 68 is a square tubular pipe that extends in the front-rear direction and has a front end open and a rear end closed. The length of the rough cleaning side water diversion device 68 in the front-rear direction is longer than the length of the main washing side water diversion device 67 in the front-rear direction.

As shown in FIG. 8, in the decompression section 69, a rectangular flat plate-shaped decompression plate 71 having a small hole 72 formed therein is roughened with a rectangular flange portion 67a provided at the rear end of the main cleaning side water diversion device 67. It is configured by being sandwiched and fastened to and fixed to a rectangular flange portion 68a provided at the front end of the water diversion device 68 on the cleaning side. The decompression unit 69 performs a decompression function by using the small hole 72 as an orifice. The pressure reducing unit 69 may be configured by using another means such as a pressure reducing valve.

The small holes 72 are provided eccentrically below the center position of the pressure reducing plate 71. As a result, the lower end edge of the small hole 72 is arranged so as not to have a step with the lower end of the inner peripheral surface of the main cleaning side diversion device 67 and the rough cleaning side diversion device 68.

As shown in FIGS. 7 (a) and 8 (a), the rough cleaning side water diversion device 68 has an insertion port 68b that opens downward at a plurality of locations (5 locations in this example) in the front-rear direction. Is formed. The upper end of the rough cleaning pipe 73 extending in the vertical direction is inserted and connected to each of the insertion ports 68b. The rough cleaning pipe 73 is a cylindrical pipe that extends in the vertical direction and has an upper end open and a lower end closed. The upper end of each rough cleaning pipe 73 projects upward from the insertion port 68b inside the rough cleaning side water diversion device 68. The lower end of each rough cleaning pipe 73 is fixed to the water diversion device main body 66 and supported by a pipe receiving plate 77 extending in the front-rear direction.

As shown in FIGS. 7 (b) and 7 (d), the rough cleaning pipe 73 has a first rough cleaning water injection nozzle 74a that opens to the right at a plurality of points in the vertical direction and an opening diagonally forward to the right. A second rough washing water injection nozzle 74b is provided.

As shown in FIGS. 7 (a) and 8 (a), the main washing side water diversion device 67 is formed with an insertion port 67b that opens downward at one location in the front-rear direction. The upper end of the main cleaning pipe 75 extending in the vertical direction is inserted and connected to the insertion port 67b. The main cleaning pipe 75 is a cylindrical pipe that extends in the vertical direction and has an upper end open and a lower end closed. The upper end of the main cleaning pipe 75 projects upward from the insertion port 67b inside the main cleaning side diversion device 67. The lower end of the main cleaning pipe 75 is fixed to the water diversion device main body 66 and supported by a pipe receiving plate 77 extending in the front-rear direction.

Similar to the rough cleaning pipe 73, the main cleaning pipe 75 has a first main cleaning water injection nozzle 76a that opens to the right at a plurality of points in the vertical direction as shown in FIGS. 7 (c) and 7 (d). And a second main washing water injection nozzle 76b that opens diagonally forward to the right. The number of the first and second main cleaning water injection nozzles 76a and 76b provided in the main cleaning pipe 75 is the number of the first and second rough cleaning water injection nozzles 74a and 74b provided in the rough cleaning pipe 73. More than.

The orientation of the rough cleaning pipe 73 and the main cleaning pipe 75 in the circumferential direction (that is, the orientation of the rough cleaning water injection nozzle 74 and the main cleaning water injection nozzle 76) is the pipe angle adjusting mechanism 77a provided on the pipe receiving plate 77. It can be adjusted by (see FIG. 7).

In the water diversion device 4 described above, the washing water pumped from the pump 64 flows into the water diversion device main body 66 and is branched into the main washing side water diversion device 67 and the rough washing side water diversion device 68. The washing water branched to the main washing side water diversion device 67 flows into the main washing pipe 75, and the first and second main washing water injection nozzles 76a located on the left side of the container 30 carried by the transport device 2. , 76b is injected toward the opening surface of the container 30 with the discharge pressure of the pump 64 (see FIG. 9B).

The washing water branched to the rough washing side diversion device 68 collides with the pressure reducing plate 71 arranged in the decompression unit 69, and a part of the washing water that has passed through the small hole 72 is on the rough washing side in a decompressed state. It flows into the water diversion device 68. The washing water that has passed through the small hole 72 flows along the inner bottom surface of the rough washing side diversion device 68 and collides with the upper end of the rough washing pipe 73 that protrudes from the insertion port 68b. Will flow while being weakened. The wash water whose flow velocity is weakened flows into each rough wash pipe 73, and is conveyed from the first and second rough wash water injection nozzles 74a and 74b located on the left side of the container 30 conveyed by the transfer device 2. It is injected from the discharge pressure of the pump 64 toward the opening surface of 30 at a pressure depressurized by the depressurizing unit 69 (see FIG. 9A).

From the first and second rough cleaning water injection nozzles 74a and 74b provided on the plurality of rough cleaning pipes 73 arranged along the front-rear direction, the cleaning water is relatively long in the front-rear direction. (See FIG. 1), the injection is directed toward the opening surface of the container 30 being conveyed by the transfer device 2. At this time, from the first rough cleaning water injection nozzle 74a, the cleaning water is directed to the right toward the front side portion of the opening surface of the container 30 (the portion that does not overlap with the container 30 adjacent to the front side). It is injected (see FIG. 9 (c)). On the other hand, from the second rough washing water injection nozzle 74b, the washing water is jetted toward the inner part of the opening surface of the container 30 (the part overlapping the container 30 adjacent to the front side) so as to be diagonally forward to the right. (See FIG. 9 (c)). The details of cleaning with the cleaning water ejected from the first and second rough cleaning water injection nozzles 74a and 74b will be described later.

Similarly, from the first and second main cleaning water injection nozzles 76a and 76b provided in one main cleaning pipe 75, the cleaning water is adjacent to the front side (downstream side of the transport path) of the rough cleaning region H1. In addition, in the main cleaning region H2 (see FIG. 1), which is shorter in the front-rear direction than the rough cleaning region H1, the water is sprayed toward the opening surface of the container 30 transported by the transport device 2. At this time, from the first main washing water injection nozzle 76a, like the first rough washing water injection nozzle 74a, the part on the front side of the opening surface of the container 30 (the part that does not overlap with the container 30 adjacent to the front side). ), It is jetted to the right. On the other hand, from the second main washing water injection nozzle 76b, as with the second rough washing water injection nozzle 74b, the washing water is directed toward the inner portion of the opening surface of the container 30 (the portion overlapping the container 30 adjacent to the front side). Then, it is jetted diagonally forward to the right. The details of cleaning with the cleaning water ejected from the first and second main cleaning water injection nozzles 76a and 76b will be described later.

When the washing of the container 30 is completed, the pump 64 is stopped and the pumping of the washing water is stopped. The cleaning water remaining in the rough cleaning pipe 73 and the main cleaning pipe 75 is discharged from the rough cleaning water injection nozzle 74 and the main cleaning water injection nozzle 76, respectively. The washing water remaining inside the rough washing side water diversion device 68 and the main washing side water diversion device 67 flows into the water diversion device main body 66 and is discharged to the washing tank 61 through the pump 64.

In particular, the washing water remaining inside the rough washing side water diversion device 68 is blocked by the pressure reducing plate 71 when returning to the water diversion device main body 66, and the lower end edge of the small hole 72 and the rough washing side water diversion device. Since there is no step on the lower end of the inner peripheral surface of the vessel 68, the water is smoothly discharged from the small hole 72 to the water diversion device main body 66.

<Action / effect of water divider 4>
The washing water flowing in from the small hole 72 of the pressure reducing plate 71 collides with the upper end of the rough washing pipe 73 protruding from below inside the rough washing side diversion device 68 multiple times to weaken the flow velocity, resulting in a plurality of rough washing. It is evenly injected from the pipe 73.

For different cleaning processes, the rough cleaning process and the main cleaning process, there is no need for control means to control multiple pumps so that the pressure is appropriate for each, and only a single pump 64 is driven, and the configuration differs with a simple configuration. Cleaning water of different pressures can be supplied for the cleaning process.

When the operator disassembles and cleans the water diversion device 4, even if the rough cleaning pipe 73 is removed from the rough cleaning side diversion device 68, the washing water does not remain inside the rough cleaning side diversion device 68, so that the rough cleaning is performed. The wash water does not flow down from the side diversion device 68. Therefore, it is possible to work safely without a risk of burns or dirt. The water diversion device 4 has been described above.

As described above, the washing water supply system included in the washing device 3 includes a washing tank 61, a pump 64, and a water diversion device 4 (including a rough washing water injection nozzle 74 and a main washing water injection nozzle 76). Has been done. The washing water supply system included in the washing device 3 has been described above.

-Structure of steam supply system Next, the steam supply system included in the cleaning device 3 will be described. The steam supply system is a system for injecting steam (steam) used in the rough cleaning process toward the container 30 transported by the transport device 2 in the cleaning chamber R3, and in the cleaning tank 61. This is a system for supplying steam to the steam heater 88 that heats the washing water stored in the steam heater 88.

As shown in FIG. 6, a steam supply port 81 is provided on the rear wall of the lower housing 11. The steam supply port 81 is connected to a steam generator (boiler, etc., not shown) located outside the washing machine 1, and steam (steam) generated by the steam generator is connected to the steam supply port 81. It is supposed to be supplied. Superheated steam may be supplied as steam. The steam supply port 81 is connected to the steam injection nozzle 83 located in the cleaning chamber R3 via the pipe 82 located in the lower space R1.

As shown in FIGS. 1, 6, 7, and 9 (c), the steam injection nozzle 83 includes a steam pipe 84 and a steam injection port 85 provided in the steam pipe 84. The steam pipe 84 extends in the front-rear direction in the rough cleaning region H1 (see FIG. 1) in the space between the pair of left and right transport chains 45 in the lower part of the cleaning chamber R3, and the front end is opened and the rear end is closed. It is a cylindrical pipe. The front end of the steam pipe 84 is connected to a pipe 82 connected to the steam supply port 81 (see FIG. 6).

As shown in FIG. 9C, the steam supply ports 81 are provided so as to be lined up in the front-rear direction at a plurality of locations in the front-rear direction of the steam pipe 84, and are open upward. The distance between the adjacent steam injection ports 85 in the front-rear direction is smaller than the distance between the adjacent containers 30 (that is, between the adjacent holders 50) in the front-rear direction (see FIG. 9 (c)).

The high-temperature steam supplied from the steam injection port 85 flows into the steam pipe 84, and from a plurality of steam injection ports 85 located below the container 30 conveyed by the transfer device 2, the rough cleaning region H1 (FIG. 1). See) and sprayed upwards. The injected steam is discharged from between the pair of left and right transport chains 45 (that is, between the movement loci of the first holding portion 52 and the second holding portion 53 of the holder 50), and between the container 30 and the adjacent container 30. It moves upward toward the space and fulfills the function of maintaining the cleaning chamber R3 in a high temperature environment of 90 ° C. or higher. As a result, the container 30 is heated, and at the same time, the cleaning water ejected from the rough cleaning water injection nozzle 74 located on the left side in the rough cleaning region H1 is also heated.

The amount (flow rate) of steam supplied to the steam injection nozzle 83 can be adjusted by controlling the first steam solenoid valve 86 (see FIG. 6) provided in the middle of the pipe 82 in the lower space R1. It has become.

In the lower space R1, the pipe 87 branches from the branch portion 82a (see FIG. 6) of the pipe 82 located on the upstream side of the first steam solenoid valve 86. The branched pipe 87 is connected to a steam heater 88 located in the cleaning tank 61. As a result, high-temperature steam is ejected from a large number of pores provided on the surface of the steam heater 88 in the washing water stored in the washing tank 61, and is stored in the washing tank 61. The washing water is heated.

The amount (flow rate) of steam supplied to the steam heater can be adjusted by controlling the second steam solenoid valve 89 (see FIG. 6) provided in the middle of the pipe 87 in the lower space R1. ing. As a result, the washing water stored in the washing tank 61 is maintained at a high temperature of 90 ° C. or 70 ° C.

As described above, the steam supply system included in the cleaning device 3 includes a steam supply port 81, a steam injection nozzle 83, and a steam heater 88. The steam supply system included in the cleaning device 3 has been described above.

-Water supply system Next, the water supply system included in the cleaning device 3 will be described. The water supply system is a system for injecting water (warm water) used in the finish cleaning process toward the container 30 conveyed by the transfer device 2 in the cleaning chamber R3, and in the cleaning tank 61. It is a system for supplying water to the water.

As shown in FIG. 6, a water supply port 91 is provided on the rear wall of the lower housing 11. The water supply port 91 is connected to a water supply device (water supply pipe, etc., not shown) located outside the washing machine 1, and water (water supply at room temperature) is supplied from the water supply port to the water supply port 91. It is supposed to be supplied. The water supply port 91 is connected to the supply port 93 arranged toward the inside of the cleaning tank 61 in the cleaning chamber R3 via the pipe 92 located in the lower space R1. The water at room temperature supplied from the water supply port 91 is supplied into the cleaning tank 61 through the supply port 93.

The amount (flow rate) of water supplied from the supply port 93 to the cleaning tank 61 is adjusted by controlling the first water supply solenoid valve 94 (see FIG. 6) provided in the middle of the pipe 92 in the lower space R1. You can do it.

In the lower space R1, the pipe 95 branches from the branch portion 92a (see FIG. 6) of the pipe 92 located on the upstream side of the first water supply solenoid valve 94. The branched pipe 95 extends upward and is located in the heat exchange chamber R5 (see also FIG. 11) of the heat exchanger 5. The inlet side connection port 131a (also in FIG. 11) of the heat exchange pipe 131 (see also FIG. 11). (See also) and is connected to a finish cleaning pipe 96 (see also FIG. 6) located in the cleaning chamber R3 via a heat exchange pipe 131. The water at room temperature (about 10 ° C.) supplied from the pipe 95 is heated by the heat exchanger 5 in the process of passing through the heat exchange pipe 131 to become hot water at about 60 ° C. That is, hot water is supplied to the finish cleaning pipe 96. The configuration of the heat exchanger 5 will be described in detail later.

The finish cleaning pipe 96 extends in the left-right direction in the finish cleaning area H3 (see FIG. 1) located on the front side (downstream side of the transport path) of the main cleaning area H2 in the upper part of the cleaning chamber R3, and the left end is opened and the right end is opened. Is a closed cylindrical pipe. The left end of the finish cleaning pipe 96 is connected to the outlet side connection port 131b of the heat exchange pipe 131 (see FIGS. 6 and 10). As shown in FIGS. 10 (a) and 10 (b), the finish cleaning pipe 96 is provided with a finish cleaning water injection nozzle 97 that opens diagonally downward and backward at a plurality of locations in the left-right direction.

The hot water supplied to the finish cleaning pipe 96 is opened in the container 30 from the finish cleaning water injection nozzle 97 located above the container 30 conveyed by the transfer device 2 in the finish cleaning region H3 (see FIG. 1). It is injected diagonally downward and backward toward the surface (see FIGS. 10 (a) and 10 (b)).

The amount (flow rate) of hot water supplied to the finish wash water injection nozzle 97 can be adjusted by controlling the second water supply solenoid valve 98 (see FIG. 6) provided in the middle of the pipe 95 in the lower space R1. It has become like.

As described above, the water supply system included in the cleaning device 3 includes a water supply port 91, a supply port 93, a heat exchange pipe 131 (heat exchanger 5), and a finish cleaning water injection nozzle 97. The water supply system included in the cleaning device 3 has been described above.

<Structure of heat exchanger 5>
Hereinafter, the heat exchanger 5 will be described. The heat exchanger 5 has a function of heating water (water at room temperature) supplied from the pipe 95 in the water supply system and supplying the hot water obtained by heating to the finish cleaning pipe 96. As shown in FIG. 11 and the like, the heat exchanger 5 includes a heat exchange chamber R5, an outlet side blower 111, and an inlet side blower 121.

As shown in FIGS. 1 and 11, the heat exchange chamber R5 is arranged adjacent to the upper side of the cleaning chamber R3 at the uppermost position of the cleaning chamber housing 13, and is provided so as to extend in the front-rear direction. .. The heat exchange chamber R5 includes a housing 101 (see FIGS. 11 and 12) provided at the uppermost position of the cleaning chamber housing 13, and a plurality of upper lids (not shown) constituting the upper wall of the cleaning chamber housing 13. It is defined by. The cleaning chamber R3 and the heat exchange chamber R5 are vertically partitioned by the bottom wall 102 (see FIG. 12) of the housing 101.

As shown in FIG. 12, the housing 101 has a substantially rectangular parallelepiped box-like shape that opens upward and extends in the front-rear direction. By closing the upper opening of the housing 101 with an upper lid, a substantially rectangular parallelepiped heat exchange chamber R5 extending in the front-rear direction is defined. The bottom wall 102 of the housing 101 has a so-called mountain-shaped shape that gradually moves upward from both ends in the left-right direction toward the center in the left-right direction over the entire area in the front-rear direction (see FIG. 12).

Inside the housing 101, a partition plate 103 extending rearward from the front wall of the housing 101 to a position near the rear wall of the housing 101 is provided at a substantially central position in the left-right direction. The partition plate 103 divides the heat exchange chamber R5 into two, an outward chamber R5a extending in the front-rear direction on the left side and a return chamber R5b extending in the front-rear direction on the right side. A communication opening 104 that communicates the outward passage chamber R5a and the return passage chamber R5b is formed between the rear end of the partition plate 103 and the rear wall of the housing 101. The above-mentioned steam exhaust stack 26 is provided at a position of the housing 101 corresponding to the front end portion of the return chamber R5b. The steam exhaust stack 26 communicates with the front end of the return chamber R5b.

An outlet side inlet 105 communicating with the outward chamber R5a is formed on the front wall of the housing 101, and an inlet side inlet 106 communicating with the return chamber R5b is formed on the rear wall of the housing 101. The high-temperature exhaust gas (for example, high-temperature steam leaking from the finish cleaning region H3) in the outlet-side space R4 sucked by the outlet-side blower 111 is blown out to the outbound chamber R5a via the outlet-side inlet 105 and is blown out to the inlet side. High-temperature exhaust gas (for example, high-temperature steam leaking from the rough cleaning region H1) in the inlet-side space R2 sucked by the blower 121 is blown out to the return chamber R5b via the inlet-side inlet 106. There is.

Inside the housing 101, at a position slightly to the right of the partition plate 103 in the left-right direction, from the rear wall of the housing 101 to the front-rear position that overlaps the rear end of the partition plate 103 in the front-rear direction by a predetermined distance. , A suction guide plate 107 extending forward is provided. A minute gap 108 extending in the front-rear direction is defined at a position where the suction guide plate 107 and the partition plate 103 overlap each other in the front-rear direction. The suction guide plate 107 is arranged so as to partition the inlet side inlet 106 and the communication opening 104. The actions of the suction guide plate 107 and the minute gap 108 will be described later.

The outlet side blower 111 is arranged in the outlet side blower space R7 adjacent to the front side of the heat exchange chamber R5 (see FIG. 1), and is rotationally driven by the outlet side motor 112. The outlet-side blower 111 sucks the high-temperature exhaust that leaks from the cleaning chamber R3 to the outlet-side space R4 and is captured by the outlet-side housing 14 through the outlet-side suction port 19 (see FIG. 1), and feeds the outlet-side blower 111. It functions to blow out into the outbound chamber R5a through the entrance 105. In the outlet side blower space R7, a straightening vane 113 that surrounds the periphery of the outlet side blower 111 and is connected to the edge of the outlet side inlet 105 is provided (see FIG. 11). As a result, the high-temperature exhaust gas sucked by the outlet-side blower 111 can smoothly move into the outbound chamber R5a.

The inlet-side blower 121 is arranged in the inlet-side blower space R6 adjacent to the rear side of the heat exchange chamber R5 (see FIG. 1), and is rotationally driven by the inlet-side motor 122. The inlet-side blower 121 sucks the high-temperature exhaust that leaks from the cleaning chamber R3 to the inlet-side space R2 and is captured by the inlet-side housing 12 through the inlet-side suction port 18 (see FIG. 1), and feeds the inlet-side blower 121. It functions to blow out into the return chamber R5b through the entrance 106. In the inlet side blower space R6, a straightening vane 123 that surrounds the periphery of the inlet side blower 121 and is connected to the edge of the inlet side inlet 106 is provided (see FIG. 11). As a result, the high-temperature exhaust gas sucked by the inlet-side blower 121 can smoothly move into the return chamber R5b.

As shown in FIG. 11, a heat exchange pipe 131 is housed in the heat exchange chamber R5. As shown in FIGS. 6 and 11, the heat exchange pipe 131 extends in the left-right direction while reciprocating in the heat exchange chamber R5 a plurality of times in the front-rear direction. As a result, a part of the heat exchange pipe 131 is located in the outward chamber R5a, and the other portion of the heat exchange pipe 131 is located in the return chamber R5b. The inlet-side connection port 131a of the heat exchange pipe 131 is connected to the end of the pipe 95 located in the inlet-side blower space R6 (see FIG. 11). The outlet side connection port 131b of the heat exchange pipe 131 is led out from the heat exchange chamber R5 (outbound chamber R5a) to the cleaning chamber R3 via the through hole 102a (see FIG. 11) provided in the bottom wall 102 of the housing 101. Then, it is connected to the finish cleaning pipe 96 in the cleaning chamber R3 (see FIG. 10 and the like).

In the heat exchanger 5 described above, the high-temperature exhaust (exhaust on the outlet side) leaking from the cleaning chamber R3 to the space R4 on the outlet side is sucked into the blower 111 on the outlet side through the suction port 19 on the outlet side, and is sucked into the outbound chamber. It is blown out to R5a. The exhaust on the outlet side blown out to the outward chamber R5a flows backward toward the rear end portion (termination portion) of the outward chamber R5a while exchanging heat with the heat exchange pipe 131 located in the outward chamber R5a.

On the other hand, the high temperature exhaust (inlet side exhaust) leaking from the cleaning chamber R3 to the inlet side space R2 is sucked into the inlet side blower 121 through the inlet side suction port 18 and blown out to the return chamber R5b. The inlet-side exhaust gas blown out to the return chamber R5b flows forward toward the front end (termination) of the return chamber R5b while exchanging heat with the heat exchange pipe 131 located in the return chamber R5b.

The flow velocity of the outlet-side exhaust gas blown out to the outward passage chamber R5a through the outlet-side inlet 105 becomes weaker when it reaches the end of the outward passage chamber R5a. However, the outlet-side exhaust with a weakened flow velocity is sucked by the negative pressure generated in the vicinity of the minute gap 108 due to the flow of the inlet-side exhaust with a high flow velocity immediately after being blown out by the inlet-side blower 121 (so-called Venturi effect). It flows into the return chamber R5b along the suction guide plate 107 through the minute gap 108. As a result, the outlet-side exhaust gas that has flowed backward through the outward path chamber R5a flows forward again and flows forward along with the inlet-side exhaust gas in the return path chamber R5b.

The inlet-side exhaust gas and the outlet-side exhaust gas that flow forward in the return path chamber R5b in this way are discharged to the outside of the washing machine 1 via the steam exhaust pipe 26 located at the end of the return path chamber R5b. Further, the bottom wall 102 of the housing 101 defining the bottom surface of the heat exchange chamber R5 constitutes the ceiling surface of the cleaning chamber R3. Therefore, a part of the heat in the cleaning chamber R3 is taken into the heat exchange chamber R5 via the bottom wall 102. The heat taken into the heat exchange chamber R5 in this way also contributes to the heating of the heat exchange pipe 131.

<Action / effect of heat exchanger 5>
The high-temperature exhaust (particularly, the exhaust on the outlet side) discharged from the cleaning chamber R3 is reciprocated in the heat exchange chamber R5 to exchange heat with the heat exchange pipe 131 while flowing through a long flow path, so that the heat is discharged from the cleaning chamber R3. The heat generated can be sufficiently recovered.

Furthermore, due to the action of the Venturi effect caused by the inlet side exhaust being blown near the folded portion of the outlet side exhaust, the outlet side exhaust is allowed to flow through a long flow path while efficiently exchanging heat without significantly reducing the flow velocity. , Can be exhausted.

Further, by absorbing the heat in the cleaning chamber R3 from the bottom surface of the heat exchange chamber R5 and contributing the absorbed heat to the heating of the heat exchange pipe 131, heat exchange can be performed more effectively. The heat exchanger 5 has been described above. The washing water supply system, the steam supply system, and the water supply system included in the washing device 3 included in the washing machine 1 have been described in order.

<Operation of cleaning device 3>
Next, the operation of the cleaning device 3 configured as described above will be described. During the operation of the cleaning device 3, the operating states of the pump 64, the first steam solenoid valve 86, the second steam solenoid valve 89, the first water supply solenoid valve 94, and the second water supply solenoid valve 98 are controlled (not shown). It is adjusted as appropriate, either automatically by the device or manually by the operator.

A worker near the input port 21 (see FIG. 1 and the like) of the washing machine 1 is moving forward along the transport path by the operation of the transport device 2 in the inlet side space R2. Sequentially hold the container 30.

As a result, each of the plurality of containers 30 stands up and down, and the opening of the container 30 is tilted by an angle θ (<90 degrees, see FIG. 2B) from the front to the left side. It is held by using a plurality of holders 50 so that the right end portion of the 30 is located in front of the left end portion of the container 30 and is arranged in the front-rear direction with a predetermined interval. As a result, the containers 30 adjacent to each other in the front-rear direction are arranged so that a part of each other overlaps in the front-rear direction (see FIG. 2A).

The plurality of containers 30 arranged in this way are moved from the inlet side space R2 to the cleaning chamber R3 by the transport device 2. The plurality of containers 30 moved into the washing chamber R3 first reach the rough washing area H1 (see FIG. 1), and are washed by the rough washing step while moving through the rough washing area H1.

In the rough cleaning step, high-temperature steam is injected upward from steam injection nozzles 83 (plural steam injection ports 85) located below the plurality of containers 30 (see FIG. 9A). The injected steam moves upward from between the pair of left and right transport chains 45 toward the space between the container 30 and the adjacent container 30. As a result, the washing chamber R3 is maintained in a high temperature environment of 90 ° C. or higher, and the container 30 is heated and humidified.

Further, in the rough cleaning step, high-temperature (for example, 90 ° C. or higher) cleaning water is discharged from the first and second rough cleaning water injection nozzles 74a and 74b located on the left side of the plurality of containers 30 to the opening surface of the container 30. From the discharge pressure of the pump 64, the pressure is reduced by the pressure reducing unit 69 (see FIG. 9A). The cleaning water injected from the first and second rough cleaning water injection nozzles 74a and 74b is also heated by the steam injected from the steam injection port 85. In this way, the injected steam suppresses not only the atmospheric temperature of the cleaning chamber R3 and the temperature of the container 30, but also the decrease in the temperature of the injected cleaning water.

From the first rough cleaning water injection nozzle 74a, cleaning water is injected toward a portion on the front side of the opening surface of the container 30 (a portion that does not overlap with the container 30 adjacent to the front side) (see FIG. 9 (c)). ). On the other hand, from the second rough cleaning water injection nozzle 74b, the cleaning water is injected toward the inner portion of the opening surface of the container 30 (the portion overlapping the container 30 adjacent to the front side) (see FIG. 9 (c)). ). Further, due to the movement of the container 30, the injection position moves in order from the back to the front of the container 30. As a result, the washing water is distributed over the entire opening surface of the container 30. Further, the washing water jetted from the first and second rough washing water injection nozzles 74a and 74b is reflected by the opening surface of the container 30 and spreads over the entire back surface of the container 30 adjacent to the front side. As a result, the washing water spreads over the entire surface including the opening surface and the back surface of each container 30, and the dirt adhering to each container 30 can be washed over the entire surface of the container 30.

Since the length of the rough cleaning region H1 in the anteroposterior direction is relatively long (see FIG. 1), the container 30 is cleaned by the rough cleaning step over a relatively long time of moving in the rough cleaning region H1. The cleaning water sprayed in the rough cleaning step is used for cleaning the container 30, then collected in the cleaning tank 61, and is again used for injection from the first and second rough cleaning water injection nozzles 74a and 74b. ..

Here, if the cleaning water is injected from the direction opposite to the steam injection direction, only the tip of the cleaning water injection region can come into contact with the steam. On the other hand, in the cleaning device 3, steam is sprayed from the bottom to the top, and the washing water is sprayed from the left to the right, so that the washing water and the steam come into overall contact with each other to efficiently heat the washing water. .. As a result, the temperature drop of the washing water after injection is suppressed, and the container 30 can be effectively washed while maintaining the temperature of the washing water at a high temperature.

Further, since steam is injected from below the container 30 having an open surface, the injected steam smoothly flows upward between the container 30 and the container 30 along the opening surface of the container 30, and the entire container 30 is blown. It can be heated evenly. Further, since the container 30 is erected substantially vertically, the area of the container 30 in a plan view is smaller than that in the case where the opening surface of the container 30 is turned down or tilted in the vertical direction for cleaning. Dirt strongly adhered to the container 30 due to seizure or the like can be efficiently cleaned in a space-saving manner. In addition, by arranging the steam injection nozzle 83 between the first holding portion 52 and the second holding portion 53 of the holder 50, temperature unevenness in the left-right direction is reduced, and the entire container 30 is effectively washed. be able to.

After passing through the rough cleaning region H1, the plurality of containers 30 then reach the main cleaning region H2 (see FIG. 1) and are cleaned by the main cleaning step while moving through the main cleaning region H2. Since the anteroposterior length of the main cleaning region H2 is shorter than the anteroposterior length of the rough cleaning region H1 (see FIG. 1), the container 30 is cleaned by the rough cleaning step during the time when the container 30 is cleaned by the main cleaning step. It is shorter than the time.

In the main cleaning step, while steam is not injected, high temperature (for example, 90 ° C. or higher) cleaning water is discharged from the first and second main cleaning water injection nozzles 76a and 76b located on the left side of the plurality of containers 30. It is injected toward the opening surface of the container 30 with the discharge pressure of the pump 64 (see FIG. 9B). That is, the cleaning water is sprayed toward the opening surface of the container 30 at a pressure higher than that in the rough cleaning step.

From the first main washing water injection nozzle 76a, washing water is sprayed toward a portion on the front side of the opening surface of the container 30 (a portion that does not overlap with the container 30 adjacent to the front side). On the other hand, from the second main washing water injection nozzle 76b, the washing water is sprayed toward the inner portion of the opening surface of the container 30 (the portion overlapping the container 30 adjacent to the front side). As a result, the washing water is distributed over the entire opening surface of the container 30. Further, the washing water jetted from the first and second main washing water injection nozzles 76a and 76b is reflected by the opening surface of the container 30 and spreads over the entire back surface of the container 30 adjacent to the front side. As a result, the washing water spreads over the entire surface including the opening surface and the back surface of each container 30, and the dirt adhering to each container 30 that could not be removed in the rough cleaning step is washed over the entire surface of the container 30. Can be done. The washing water ejected in the main cleaning step is used for cleaning the container 30, then collected in the cleaning tank 61, and is again used for injection from the first and second main cleaning water injection nozzles 76a and 76b. ..

As described above, in the rough cleaning step, the dirt adhering to the container 30 is heated and humidified by steam, and the washing water having a lower pressure and a weaker striking force than the main washing step is sprayed onto the container 30. Then, the water and detergent contained in the washing water are supplied to the container 30 in a hot and humid environment for a longer time than the main washing step, and the temperature, water and detergent promote the wetting and dissolution of the dirt in the container 30 and the container. The stains of 30 are easily removed.

Then, in the main cleaning step, the washing water having a higher pressure than the rough cleaning step is sprayed onto the container 30 in a state where the impact force is strong. Since the dirt on the container 30 is easily removed by the rough cleaning step, the dirt on the container 30 can be washed off in a shorter time than in the rough cleaning step in the main cleaning step.

Further, by driving one pump 64, the washing water is supplied to the container 30 at a low pressure in the rough washing step and at a high pressure in the main washing step. The washing water sprayed in the main washing step is collected in the same washing tank 61 as the washing water sprayed in the rough washing step. Since cleaning water with different pressures corresponding to each cleaning process can be supplied by one pump 64, it is not necessary to adjust the rotation speed and discharge pressure of the pump 64 for each cleaning process, and the container 30 is cleaned with a simple configuration. be able to.

Further, the cleaning device 3 can switch between the low concentration mode and the high concentration mode as the operation mode in the rough cleaning step and the main cleaning step according to the degree of contamination of the container 30 and the difficulty of removing stains. It is configured in. In this example, in the low concentration mode, the temperature of the washing water is set to 70 ° C., and the detergent concentration of the washing water is set to 0.1 to 1%. In the high concentration mode, the wash water temperature is set to 90 ° C. and the detergent concentration of the wash water is set to 1-15%. It is preferable to select the low-concentration mode when the container 30 is relatively clean, and the high-concentration mode is selected when the container 30 is relatively clean.

Different types of detergents may be used in each of the low-concentration mode and the high-concentration mode, or the same type of detergent may be used in both the low-concentration mode and the high-concentration mode. Further, the low concentration mode may be further divided into a plurality of modes having different detergent concentrations and switched, or the high concentration mode may be further divided into a plurality of modes having different detergent concentrations and switched.

After passing through the main cleaning region H2, the plurality of containers 30 then reach the finish cleaning region H3 (see FIG. 1) and are cleaned by the finish cleaning step while moving through the finish cleaning region H3.

In the finish cleaning step, hot water having a high temperature (about 60 ° C.) is injected diagonally downward and backward from the finish cleaning water injection nozzle 97 located above the container 30 toward the opening surface of the container 30 (FIG. 10 (FIG. 10). a) and FIG. 10 (b)). As a result, the washing water and the like remaining on the surface of the container 30 are washed away after the main washing step, and the washing work for the container 30 by the washing device 3 is completed. The hot water sprayed in the finish washing step is used for washing the container 30, and then drained to the outside of the washing machine 1 through the finishing drain port 17c (see FIG. 1).

After passing through the finish cleaning region H3, the container 30 for which the cleaning work has been completed is moved from the cleaning chamber R3 to the outlet side space R4 by the transport device 2, and is discharged from the outlet 22 of the cleaning machine 1.

In order to suppress the leakage of cleaning water and steam from the cleaning chamber R3 and to maintain the temperature inside the cleaning chamber R3, the inlet side of the cleaning chamber R3 (the boundary between the inlet side space R2 and the cleaning chamber R3) is provided. A door 28a that opens and closes this boundary is provided. Similarly, a door 28b that opens and closes is provided on the outlet side of the cleaning chamber R3 (the boundary between the cleaning chamber R3 and the outlet side space R4), and the entrance side of the finish cleaning region H3 (the boundary between the main cleaning region H2 and the finish cleaning region H3). ) Is provided with a door 28c that opens and closes. One or more of the doors 28a to 28c may be omitted, or similar doors may be provided at other places as needed.

<Action / effect of cleaning device 3>

According to the cleaning device 3 according to the present embodiment, the container 30 is transported along the transport path while being held in an upright posture with respect to the transport path. Steam is injected from the steam injection nozzle 83 toward the container 30 conveyed in this way, and cleaning water is injected from the cleaning water injection nozzle (in this example, the cleaning water injection nozzle 74). As a result, it is possible to spread the washing water to the container 30 to wash off the dirt while heating the container 30 by spreading steam to the opening surface and the back surface of the container 30 and moistening the dirt of the container 30. Further, since the washing water after injection is also heated by steam, it is possible to suppress a decrease in washing ability due to a decrease in the temperature of the washing water. In this way, the cleaning device 3 can properly clean the entire container 30 while transporting the container 30.

Further, according to the cleaning device 3, the container 30 is held in a posture of standing up and down with respect to the transport path and opening in a direction inclined laterally by a predetermined angle θ from the front of the transport path. In other words, the container 30 is held in a state of rising along the vertical axis and tilting laterally around the vertical axis. Washing water is sprayed from the side of the transport path toward the opening of the container 30 in such a posture. As a result, as compared with the case where the washing water is sprayed from above the container 30, the washing water can be efficiently collided with the opening surface of the container 30 and the dirt of the container 30 can be strongly removed. In addition, if the plurality of containers 30 are regularly transported at high density while being tilted in this way, the cleaning device 3 can be miniaturized in both the width direction and the transport direction orthogonal to the transport direction.

Further, according to the cleaning device 3, the first rough cleaning water injection nozzle 74a injects the cleaning water toward the front side in the opening of the container 30, and the second rough cleaning water injection nozzle 74b injects the cleaning water into the opening of the container 30. The washing water is sprayed toward the back side of the. As a result, the washing water can be distributed over the entire opening surface of the container 30 even when the injection is performed only from the side of the transport path. As a result, the cleaning ability of the cleaning device 3 can be further improved with a simple configuration.

Further, according to the cleaning device 3, the lower end portions of the container 30 are held by the holders 52 and 53. As a result, the container 30 can be held by the holders 52 and 53 so that the container 30 is placed from above the holders 52 and 53. Therefore, the work of holding the container 30 by the moving holders 52 and 53 becomes easy, and the work efficiency at the time of actual use of the cleaning device 3 can be improved. Further, by supporting the weight of the container 30 below the container 30, the posture of the container 30 can be stabilized. In addition, steam is injected from below the transport path toward between the movement trajectories of the pair of holders 52, 53 (that is, where the container 30 is held). As a result, the steam flows smoothly so as to rise from the bottom to the top along the container 30, so that the steam is surely distributed over the entire surface of the container 30, and the steam is effectively acted on the container 30 to act on the container 30 effectively. The dirt can be heated and moistened while heating.

Further, according to the cleaning device 3, a plurality of containers 30 are held side by side along the transport path, and from a plurality of steam injection ports 85 provided at intervals narrower than a predetermined holding interval of the holders 52 and 53. Steam is injected toward the plurality of containers 30. As a result, since the steam injection port 85 is located between the containers 30 regardless of the positions of the holders 52 and 53, steam is always injected to the container 30 being transported, and the cleaning ability of the cleaning device 3 is improved. can.

<Action / effect of cleaning method>
According to the cleaning method according to the present embodiment, the container 30 held in an upright posture is heated by a heating device (steam injection nozzle 83 or the like) to inject cleaning water. In other words, in addition to heating by the temperature of the washing water itself, heating by another heat source (steam or the like) is applied to the container 30. As a result, the container 30 can be washed while keeping the temperature of the container 30 at a temperature suitable for washing. Further, since the container 30 is in a standing state, the washing water is spread over the entire surface including the opening surface and the back surface of the container 30 to wash off the dirt of the container 30, and the washing water after washing is not retained on the container 30. It is quickly drained to the bottom of the container 30. Therefore, it is possible to smoothly supply the cleaning water having excellent cleaning power and discharge the cleaning water after cleaning. Therefore, the entire container 30 can be properly washed.

In this example, heating (steam injection) and washing (washing water injection) of the container 30 are performed at the same time. However, heating and washing may be performed separately. Further, as the heat source of the heating device, instead of steam, a hot fluid such as superheated steam, hot water or hot air may be used, or a heat source by radiant heat such as an electric heater or a heat exchange pipe may be used. , The container 30 itself may be heated by electromagnetic induction or the like.

Further, according to the cleaning method according to the present embodiment, the container 30 is heated from a direction (that is, downward) different from the direction (that is, sideways) in which the washing water is sprayed onto the container 30. As a result, one of the heating and the spraying of the washing water is less likely to interfere with the other, and the washing effect in which both the heating and the spraying of the washing water are combined is more appropriately exhibited.

According to the cleaning method according to the present embodiment, the first step (that is, rough cleaning) of injecting steam toward the container 30 and the cleaning water toward the container 30 and the cleaning water toward the container 30. The second step of spraying (that is, the main cleaning) is performed in this order. Thereby, for example, it is possible to perform rough cleaning while moistening and dissolving the stains in the first step to make the stains easy to remove, and to perform full-scale cleaning to remove the stains in the second step.

According to the cleaning method according to the present embodiment, rough cleaning is performed so that steam is jetted from below the container 30 toward the container 30 and cleaning water is jetted from the side of the container 30 toward the container 30. After that, the main cleaning is performed so that the cleaning water is sprayed from the side of the container 30 toward the container 30. As a result, while steam is spread over the entire surface of the container 30 to moisten and dissolve the dirt on the container 30, the washing water is more efficiently collided with the container 30 as compared with the case where the washing water is sprayed from above the container 30 or the like. , The dirt on the container 30 can be strongly removed.

According to the cleaning method according to the present embodiment, rough cleaning is executed on the upstream side of the transport path while transporting the container 30 along a predetermined transport path, and main cleaning is executed on the downstream side of the transport path. .. As a result, a large number of containers 30 can be continuously washed. Therefore, a large number of containers 30 can be efficiently washed.

According to the cleaning method according to the present embodiment, in the rough cleaning, the injection of the cleaning water at a lower pressure than the main cleaning is performed for a longer time than the main cleaning. As a result, the dirt on the container 30 can be sufficiently moistened and dissolved by rough washing, and then the dirt can be efficiently washed off with high-pressure washing water in the main washing.

According to the cleaning method according to the present embodiment, the cleaning water after the rough cleaning and the cleaning in the main cleaning is collectively collected. The recovered washing water is pressurized by the pump 64, then depressurized through the water diversion device 4 and used for washing in rough washing, and is used for washing in the main washing in the state of being boosted. Therefore, compared to the case where the cleaning water used for rough cleaning and main cleaning is pressurized separately and independently, the equipment and piping for boosting can be rationalized, and the equipment to which the cleaning method is applied can be downsized. be able to.

According to the cleaning method according to the present embodiment, in an environment where the atmospheric temperature is 90 degrees or higher, cleaning water having a temperature of 90 degrees or higher is sprayed toward the container 30. Thereby, the cleaning ability of the container 30 can be further improved. The atmospheric temperature and the water temperature of the washing water may be appropriately adjusted in consideration of the nature of dirt on the container 30 to be washed, the heat insulating structure of the device to which the washing method is applied, and the like.

According to the cleaning method according to the present embodiment, at least in rough cleaning, it is possible to switch between a plurality of operation modes in which the temperature of the washing water and the detergent concentration are different. As a result, cleaning by rough cleaning can be performed in an operation mode suitable for dirt on the container 30. Further, in the main washing, the washing water having a temperature of 90 degrees or higher is sprayed toward the container 30 in an environment where the atmospheric temperature is 90 degrees or higher. As a result, the container 30 that has undergone the rough cleaning can be more efficiently cleaned by the main cleaning.

<Other forms of cleaning device 3>
The directions of the rough cleaning water injection nozzle 74 and the main cleaning water injection nozzle 76 are set in two directions, respectively, but as long as the cleaning water can be injected over the entire opening surface of the container 30, even in one direction. It may be in three or more directions.

In the main cleaning step, the cleaning water is ejected from only the first and second main cleaning water injection nozzles 76a and 76b located on the left side of the plurality of containers 30 toward the opening surface of the container 30 (FIG. 9 (FIG. 9). b) See). In addition to this, as shown in FIG. 13, the washing water is sprayed from the third and fourth main washing water injection nozzles 79a and 79b located above the plurality of containers 30 toward the opening surface of the container 30. It may be configured as follows.

In the example shown in FIG. 13, in the main cleaning side water diversion device 67, two second main cleaning pipes 78 extending in the left-right direction and arranged so as to be arranged in the front-rear direction are further connected (FIG. 13 (b). )reference). Each second main cleaning pipe 78 is a cylindrical pipe that extends in the left-right direction and has an open left end and a closed right end. The left end of each second main cleaning pipe 78 is connected to the main cleaning side diversion device 67.

As shown in FIG. 13 (c), the second main cleaning pipe 78 on the rear side (upstream side of the transport path) has a third main cleaning water injection nozzle that opens diagonally downward and backward at a plurality of locations in the left-right direction. 79a is provided, and the second main cleaning pipe 78 on the front side (downstream side of the transport path) is provided with a fourth main cleaning water injection nozzle 79b that opens diagonally forward downward at a plurality of locations in the left-right direction. .. As a result, the washing water is jetted from the third main washing water injection nozzle 79a mainly toward the opening surface of the container 30 from above the container 30, and from the fourth main washing water injection nozzle 79b, mainly the container 30. It is sprayed from above the container 30 toward the back surface.

The washed container 30 is discharged from the outlet 22 of the outlet-side housing 14. The discharged container 30 is collected by, for example, sliding by its own weight toward a collection basket or the like installed near the outlet 22. On the other hand, as shown in FIG. 14, the moving mechanism 40 is extended toward the front side (downstream side of the transport path) of the outlet side space R4, and the collection area R8 for collecting the container 30 is set in the outlet side space R4. It may be provided so as to be adjacent to each other.

Specifically, in the collection area R8 shown in FIG. 14, the lower housing 11 is extended to the front side (downstream side of the transport path) by a length sufficient to accommodate a predetermined number of containers 30, and the extended lower housing 11 is extended. The transfer chain 45 and the transfer guide plate 49 are extended, and the motor 46, the drive chain 48, the drive gear 42, and the like are arranged at positions where the extended transfer chain 45 can be driven. ing. The collection area R8 is not provided with a housing that covers the container 30 like the outlet side housing 14 of the outlet side space R4, and has an upper wall 17 of the lower housing 11, a transport chain 45 and a holder 50, and a holder 50. The washed container 30 held by the holder 50 is exposed to the outside. From the viewpoint of ease of recovery work of the container 30, which will be described later, the upper transport guide plate 49 is not extended into the recovery region R8, and only the lower transport guide plate 49 is extended into the recovery region R8.

In the example shown in FIG. 14, the washed container 30 is transported to the front side (downstream side of the transport path) so as to pass through the outlet side space R4 while being held by the holder 50, and reaches the recovery region R8. The container 30 that has reached the collection area R8 is, for example, collected by an operator and stored in a collection basket or the like. In the collection area R8, since the container 30 held by the holder 50 is exposed to the outside, the operator can easily collect the container 30. Further, since the container 30 may be collected at an arbitrary timing while moving in the collection area R8, the operator can collect the container 30 at the optimum timing while considering the priority of the collection work and other work. It can be performed. In addition, since the plurality of containers 30 are conveyed in the collection area R8, the operator can also collect the plurality of containers 30 at one time. By collecting the plurality of containers 30 together, the operator can perform another work during the period until the cleaned containers 30 are sent to the collection area R8 again. Therefore, the operator can easily and efficiently perform a plurality of operations including the collection operation of the container 30 and another operation.

As described above, since the plurality of containers 30 can be collectively handled in both the inlet side space R2 and the recovery area R8, the operator can put the container 30 into the washing machine 1 and the container from the washing machine 1. Both of the 30 collection operations can be efficiently performed.

A container detection sensor 45a capable of detecting the presence or absence of the container 30 within a predetermined detection range is provided in the vicinity of the front end portion of the transport chain 45. The transport device 2 is configured to stop the motor 46 and stop the transport of the container 30 during the period when the container detection sensor 45a detects the presence of the container 30. As a result, when the container 30 is transported to the front end of the transport chain 45 and the container detection sensor 45a detects the presence of the container 30 (that is, the approach to the front end of the transport chain 45), the container 30 is temporarily transported. By stopping, it is possible to prevent the container 30 that has failed to be collected from falling from the front side portion of the transport chain 45. After that, when the container 30 is recovered, the container detection sensor 45a does not detect the presence of the container 30, so that the transport device 2 restarts the transport of the container 30. When the container detection sensor 45a detects the presence (approach) of the container 30, the transport device 2 collects the container 30 by sound, light, or the like before or after stopping the transport of the container 30. May be configured to encourage.

Further, from the viewpoint of more reliably capturing the steam or the like leaking from the outlet 22 of the outlet-side housing 14, a housing covering the recovery region R8 may be provided in the recovery region R8. In this case, if a collection port for taking out the container 30 from the housing is provided on the left side wall of the washing machine 1, the charging port 21 and the collecting port are the same as the charging port 21 of the inlet side space R2. Since it is arranged on the common side surface (left side wall), the loading work and the collecting work can be performed more efficiently.

The cleaning device 3 has a transport device 2, and in the cleaning chamber R3, cleaning is performed on the container 30 moved by the transport device 2. On the other hand, as shown in FIG. 15, the cleaning device does not have a transport device and has a structure in which the container 30 housed (not moved) in the cleaning chamber R3 is cleaned. May be good.

Hereinafter, for convenience of explanation, as shown in FIG. 15, "front-back direction", "left-right direction", "vertical direction", "front", "rear", "left", "right", "top", and "up" Define "below". The "front-back direction", "left-right direction", and "vertical direction" are orthogonal to each other. In the example shown in FIG. 15, the same or equivalent configuration as that of the cleaning device 3 is designated by the same reference numeral as that of the cleaning device 3.

In the example shown in FIG. 15, the cleaning device as a whole has a substantially rectangular parallelepiped housing long in the left-right direction. The front wall of the housing is provided with a loading port 21 (see FIG. 15A) for loading the container 30, and further, an operation door 23 for opening and closing the loading port 21 (see FIG. 15B). ) Is provided. An operation panel 29 operated by an operator to control various cleaning devices is provided on the front wall of the housing.

A cleaning chamber R3 is defined inside the housing. In the cleaning chamber R3, each container 30 stands up and down in a direction in which the longitudinal direction of the container 30 is along the left-right direction, and the opening of the container 30 faces forward (more accurately, the opening of the container 30 is open. A plurality of containers 30 are stored so as to be lined up in the front-rear direction in three upper and lower stages in a state of being slightly inclined upward from the front).

Below the cleaning chamber R3, two steam injection nozzles 83 are arranged so as to extend in the front-rear direction and are arranged with a space in the left-right direction. As a result, steam is injected upward toward the plurality of containers 30 from the plurality of steam injection ports 85 provided in each of the two steam injection nozzles 83 located below the plurality of containers 30. ing.

At each of the left and right ends of the cleaning chamber R3, four cleaning pipes 73 are arranged so as to extend in the vertical direction and are arranged at intervals in the front-rear direction. As a result, high-temperature (for example, 90 ° C. or higher) cleaning water can be discharged from the plurality of cleaning water injection nozzles 74 provided on each of the four cleaning pipes 73 located on the left side (right side) of the plurality of containers 30. It is designed to be jetted to the right (to the left) toward the plurality of containers 30.

The injection pressure of the washing water can be adjusted by adjusting the discharge pressure of the pump 64. The injected cleaning water is used for cleaning the container 30, then collected in the cleaning tank 61, and is again used for injection from the cleaning water injection nozzle 74.

In the cleaning device shown in FIG. 15 having the above configuration, first, a rough cleaning step is executed. In the rough cleaning step, high-temperature steam is injected toward the plurality of containers 30 from the steam injection nozzles 83 (plural steam injection ports 85) located below the plurality of containers 30, and the temperature is high (for example, 90 ° C.). The wash water (above) is sprayed toward the plurality of containers 30 from the wash water injection nozzles 74 located on the left and right sides of the plurality of containers 30. The rough cleaning process is carried out over a relatively long period of time. In the rough cleaning step, the injection pressure of the cleaning water is set to a relatively low value by controlling the discharge pressure of the pump 64. Since the action / effect of this rough cleaning step is the same as the action / effect of the rough cleaning step in the cleaning device 3, detailed description here will be omitted.

After the rough cleaning process is completed, the main cleaning process is then executed. In the main cleaning step, while steam is not injected, high-temperature (for example, 90 ° C. or higher) cleaning water is injected from the cleaning water injection nozzles 74 located on the left and right sides of the plurality of containers 30 toward the plurality of containers 30. Ru. The main cleaning step is performed over a shorter period of time than the rough cleaning step. In the main washing step, the injection pressure of the washing water is set to a value higher than the value in the rough washing step by controlling the discharge pressure of the pump 64. Since the action / effect of this main cleaning step is the same as the action / effect of the main cleaning step in the cleaning device 3, detailed description here will be omitted.

The cleaning device shown in FIG. 15 may be configured to have a water diversion device 4 (see FIG. 7 and the like) included in the cleaning device 3. In this case, in the rough cleaning step, the cleaning water is ejected from the cleaning pipe 73 connected to the rough cleaning side diversion device 68 of the water diversion device 4 at a pressure decompressed by the decompression unit 69 from the discharge pressure of the pump 64. In the main cleaning step, even if the cleaning pipe 73 connected to the main cleaning side diversion device 67 of the water diversion device 4 is configured to be switchable so that the cleaning water is ejected with the discharge pressure of the pump 64. good. In this case, it is possible to supply cleaning water having different pressures to different cleaning processes while maintaining a constant discharge pressure of a single pump 64 for different cleaning processes of the rough cleaning process and the main cleaning process. ..

Here, the features of the above-described embodiments of the cleaning method according to the present invention are briefly summarized and listed below in [1] to [9], respectively.
[1]
A cleaning method for cleaning the container (30).
The present invention comprises a step of heating the container (30) by a heating device (83) and injecting washing water toward the container (30) while holding the container (30) in an upright posture. ,
Cleaning method.
[2]
In the cleaning method described in [1] above,
The step is
The container (30) is heated from a direction different from the direction in which the washing water is sprayed onto the container (30).
Cleaning method.
[3]
In the cleaning method according to the above [1] or the above [2],
The step is
The first step of injecting steam toward the container (30) and injecting washing water toward the container (30),
A second step of injecting wash water toward the container (30) is included in this order.
Cleaning method.
[4]
In the cleaning method described in [3] above,
The first step is
It is executed to inject steam from the lower side of the container (30) toward the container (30) and inject cleaning water from the side of the container (30) toward the container (30).
The second step is
The cleaning water is sprayed from the side of the container (30) toward the container (30).
Cleaning method.
[5]
In the cleaning method according to the above [3] or the above [4],
The first step is
It is executed on the upstream side of the transport path while transporting the container (30) along a predetermined transport path.
The second step is
It is executed on the downstream side of the transport path while transporting the container (30) along the transport path.
Cleaning method.
[6]
The cleaning method according to any one of the above [3] to the above [5].
The first step is
It is executed to inject the washing water toward the container (30) at the first injection pressure for the first injection time.
The second step is
It is executed to inject the washing water toward the container (30) at the second injection pressure for the second injection time.
The first step is
The first injection pressure is lower than the second injection pressure, and the first injection time is longer than the second injection time.
Cleaning method.
[7]
The cleaning method according to the above [6].
Further provided is a step of collecting the washing water after the injection in the first step and the washing water after the injection in the second step, and boosting the recovered washing water so that the collected washing water can be injected at the second injection pressure. ,
The first step is
It is executed so that the washing water after the pressurization is depressurized and injected toward the container (30) at the first injection pressure.
The second step is
It is executed so as to inject the washing water after the pressurization toward the container (30) at the second injection pressure.
Cleaning method.
[8]
In the cleaning method according to any one of the above [3] to the above [7],
At least the first step of the first step and the second step is
It is executed so that the temperature of the atmosphere holding the container (30) is adjusted to 90 degrees or higher and the temperature of the washing water sprayed toward the container (30) is adjusted to 90 degrees or higher. Ru,
Cleaning method.
[9]
In the cleaning method described in [8] above,
At least the first step of the first step and the second step is
The first operation mode in which the washing water having the first temperature and the detergent concentration of the first concentration is sprayed, and the second temperature having a temperature higher than the first temperature and the detergent concentration being higher than the first concentration, the second concentration. It is possible to switch between the second operation mode in which the washing water is sprayed and the second operation mode.
In the second operation mode, the temperature of the atmosphere holding the container (30) is adjusted to be 90 degrees or higher, and the temperature of the washing water sprayed toward the container (30) is 90 degrees or higher. To adjust, to be executed,
Cleaning method.

30 Container 83 Steam injection nozzle (heating device)

Claims (9)

A cleaning method for cleaning containers,
The present invention comprises a step of heating the container with a heating device and injecting washing water toward the container while holding the container in an upright posture.
Cleaning method. In the cleaning method according to claim 1,
The step is
The container is heated from a direction different from the direction in which the washing water is sprayed onto the container.
Cleaning method. In the cleaning method according to claim 1 or 2.
The step is
The first step of injecting steam toward the container and injecting washing water toward the container, and
A second step of injecting wash water toward the container is included in this order.
Cleaning method. In the cleaning method according to claim 3,
The first step is
It is executed so that steam is sprayed from the lower side of the container toward the container and washing water is sprayed from the side of the container toward the container.
The second step is
It is carried out to inject wash water from the side of the container toward the container.
Cleaning method. In the cleaning method according to claim 3 or 4.
The first step is
It is executed on the upstream side of the transport path while transporting the container along a predetermined transport path.
The second step is
It is executed on the downstream side of the transport path while transporting the container along the transport path.
Cleaning method. The cleaning method according to any one of claims 3 to 5.
The first step is
It is executed to inject the washing water toward the container at the first injection pressure for the first injection time.
The second step is
It is executed to inject the washing water toward the container at the second injection pressure for the second injection time.
The first step is
The first injection pressure is lower than the second injection pressure, and the first injection time is longer than the second injection time.
Cleaning method. The cleaning method according to claim 6.
Further provided is a step of collecting the washing water after the injection in the first step and the washing water after the injection in the second step, and boosting the recovered washing water so that the collected washing water can be injected at the second injection pressure. ,
The first step is
It is executed so that the washing water after the pressurization is depressurized and injected toward the container at the first injection pressure.
The second step is
It is executed so as to inject the washing water after boosting toward the container at the second injection pressure.
Cleaning method. In the cleaning method according to any one of claims 3 to 7.
At least the first step of the first step and the second step is
It is executed so that the temperature of the atmosphere for holding the container is adjusted to be 90 degrees or higher and the temperature of the washing water sprayed toward the container is adjusted to be 90 degrees or higher.
Cleaning method. In the cleaning method according to claim 8,
At least the first step of the first step and the second step is
The first operation mode in which the washing water having the first temperature and the detergent concentration of the first concentration is sprayed, and the second temperature having a temperature higher than the first temperature and the detergent concentration being higher than the first concentration, the second concentration. It is possible to switch between the second operation mode in which the washing water is sprayed and the second operation mode.
In the second operation mode, the temperature of the atmosphere holding the container is adjusted to be 90 degrees or higher, and the temperature of the washing water sprayed toward the container is adjusted to be 90 degrees or higher. Be done,
Cleaning method.

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