JP2022138882A - Jet device - Google Patents

Abstract

To provide a technique for rectifying a flow of a fluid in a jet device.SOLUTION: A jet device includes one or a plurality of nozzles 40 for jetting a liquid, and a housing 11 having an inner wall 12 and an outer wall 13 higher than the inner wall, wherein in order to jet a liquid into a space 32 surrounded by the inner wall from one side in a height direction of the inner wall and the outer wall, the nozzles are provided so as to be surrounded by the outer wall without being surrounded by the inner wall, and in order to communicate a gap 50 formed between the inner wall and the outer wall with the space, a communication part 70 is provided on the other side in the height direction.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection device, and more particularly to an injection device for injecting fluid onto an object such as vegetables.

Japanese Patent Application Laid-Open No. 63-196252 (hereinafter referred to as Patent Document 1) describes a water injection device used in a machine for removing red leaves from green onions. This water injection device is provided with an air intake port for taking in outside air from the circumference of the spring onion insertion tube, between the sprayed water droplet concentration portion and the water supply pipe. Then, turbulence is generated in the water injection device to wash the green onions.

Japanese Patent Application Laid-Open No. 63-196252 (Fig. 1, specification page 2, upper right column, line 8)

An injection device such as that described in Patent Document 1 generates turbulent airflow as water is jetted out when washing an object to be cleaned, so there is a risk that droplets or fog may be generated around the device due to splashing of water.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a technique capable of regulating fluid flow within an injection device.

An injection device according to one solution of the present invention comprises one or more nozzles for injecting fluid, and a housing having an inner wall and an outer wall which is higher than the inner wall. Here, the nozzle is provided not surrounded by the inner wall but surrounded by the outer wall so as to eject the fluid from one side of the inner wall and the outer wall in the height direction to the space surrounded by the inner wall. preferable. Moreover, it is preferable that the injection device has a communicating portion on the other side in the height direction so as to communicate a gap formed between the inner wall and the outer wall and the space.

In addition, it is preferable that the injection device includes an inner wall brim inclined toward the space on one side of the inner wall in the height direction.

In addition, it is preferable that the injection device includes an outer wall brim part inclined toward the space on one side of the outer wall in the height direction.

Moreover, it is preferable that the injection device includes a filter that covers the communicating portion on the other side of the inner wall in the height direction.

According to one solution of the invention, the flow of fluid in the injection device can be regulated.

1 is a schematic cross-sectional view of an injection device according to an embodiment of the invention; FIG. FIG. 2 is a schematic plan view of the injection device 10 shown in FIG. 1; 2 is a schematic bottom view of the injection device 10 shown in FIG. 1; FIG. FIG. 2 is a schematic cross-sectional view taken along line AA shown in FIG. 1; FIG. 4 is a schematic cross-sectional view of an injection device according to another embodiment of the invention; FIG. 4 is a schematic cross-sectional view of an injection device according to another embodiment of the invention;

In the following embodiments of the present invention, the description will be divided into a plurality of sections when necessary, but in principle they are not unrelated to each other, and one is a part or all of the other It is in. For this reason, members having the same function are denoted by the same reference numerals in all the drawings, and repeated description thereof will be omitted.

In addition, the number of components (including number, numerical value, amount, range, etc.) is limited to a specific number, unless otherwise specified or clearly limited to a specific number in principle. It may be more than or less than a specific number. In addition, when referring to the shape of a component, etc., it shall include things that are substantially similar to or similar to the shape, etc., unless otherwise specified or in principle clearly considered otherwise .

(First embodiment)
In an embodiment of the present invention, an injection device 10 having a function of injecting liquid onto a target object 80 will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view of the injection device 10. FIG. FIG. 2 is a schematic plan view of the injection device 10. FIG. FIG. 3 is a schematic bottom view of the injection device 10. FIG. FIG. 4 is a schematic cross-sectional view of the injection device 10 shown in FIG. 1 taken along line AA. The arrows in FIG. 1 represent the flow of fluid (flow of jetted liquid and accompanying air).

The target object 80 is, for example, a root vegetable (eg, ginger, ginseng, sweet potato, etc.) attached with soil after harvesting. By injecting the liquid from the injection device 10 onto such root vegetables, the deposits can be removed. Moreover, when the target object 80 is a green onion or a long onion, the injection device 10 can peel off the epidermis.

The injection device 10 has a housing 11 . The housing 11 is composed of, for example, a double structure and includes an outer housing 20 and an inner housing 30 . This housing 11 has an inner wall 12 and an outer wall 13 higher than the inner wall 12 . In this embodiment, the housing 11 includes an inner housing 30 and an outer housing 20 that accommodates the inner housing 30 . The internal housing 30 has an inner wall 12 forming it, and an internal space 32 is formed. The outer housing 20 has an outer wall 13 that constitutes it.

The external housing 20 is, for example, cylindrical and has an opening 21 in its upper portion (cylindrical body with a bottom). The internal housing 30 is, for example, cylindrical, and has an opening 31 in its upper portion (cylindrical body with a bottom). The inner housing 30 and the outer housing 20 are provided so that their central axes 130 are aligned. Therefore, the object 80 can be inserted and removed from the outside of the external housing 20 into the internal space 32 inside the internal housing 30 through the opening 21 of the external housing 20 and the opening 31 of the internal housing 30. (insertion port 150). In this embodiment, the direction in which the central axis 130 extends shown in FIG. (other side).

The injection device 10 also includes an inner wall collar portion 120 slanted toward the inner space 32 on the upper side of the inner wall 12 . The inner wall flange 120 protrudes from the periphery of the opening 31 of the inner housing 30 so as to be folded back from the upper side of the inner wall 12 . That is, the inner wall collar portion 120 (folded portion) is inclined toward the inside and downward of the internal housing 30 . The injection device 10 also includes an outer wall collar portion 110 slanted toward the inner space 32 on the upper side of the outer wall 13 . The outer wall flange 110 protrudes from the periphery of the opening 21 of the outer housing 20 so as to be folded back from the upper side of the outer wall 13 . That is, the outer wall flange 110 is inclined toward the inside of the outer housing 20 and downward.

The ejection device 10 is configured such that the liquid is ejected from the nozzle 40 to the target object 80 inserted through the opening 21 of the outer housing 20 and the opening 31 of the inner housing 30 . Therefore, by providing the flanges 110 and 120, it is possible to suppress the rebounding of the liquid from the target object 80 and the diffusion of droplets around the device.

The inner wall brim portion 120 is provided so as to narrow toward the center of the inner housing 30 . Therefore, the air around the insertion port 150 (opening 31 ) through which the object 80 is inserted and removed can be easily taken into the internal space 32 by the liquid ejected from the nozzle 40 .

Further, the outer wall collar portion 110 is provided so as to narrow toward the center of the outer housing 20 . Therefore, the air around the insertion port 150 (opening 21 , opening 31 ) through which the object 80 is inserted and removed can be easily taken into the internal space 32 by the liquid ejected from the nozzle 40 .

The injection device 10 includes a nozzle 40 for ejecting liquid. The nozzle 40 is provided so as to be sandwiched between the outer wall flange portion 110 and the inner wall flange portion 120 .
In the injection device 10 of the present embodiment, two nozzles 40 are provided facing each other radially inward in a plan view. Further, the nozzle 40 is provided above the inner wall flange portion 120 and below the outer wall flange portion 110 . Further, a part of the nozzle 40 is provided so as to protrude from the outer wall collar portion 110 toward the central axis 130 within the housing.
The nozzle of the nozzle 40 is provided so as to be able to jet downward toward the central axis 130 of the internal housing 30 . Therefore, the configuration is such that the air around the insertion port 150 is easily drawn into the internal space 32 of the internal housing 30 .

The injection device 10 also has a filter 100 below the internal housing 30 . The filter 100 has a function of filtering dirty water in which foreign matter adhering to the target object 80 is separated by the liquid ejected from the nozzle 40 . In the present embodiment, a net is used as the filter, but a mesh or punched filter may be used, and the material may be changed according to the foreign matter adhering to the object.

A bolt (not shown) passes through the bottom surface of the inner housing 30 and the bottom surface of the outer housing 20, and the outer housing 20 supports the inner housing 30 via the bolt (with a gap). Therefore, a gap 50 (space portion) is formed from the bottom surface to the side wall between the outer surface of the inner housing 30 (inner wall 12) and the inner surface of the outer housing 20 (outer wall 13).
The injection device 10 includes a gap 50 formed between the inner wall 12 and the outer wall 13 and a plurality of communicating portions 70 (openings, holes) communicating with the inner space 32 . In this embodiment, the portions where the bottom surface and the side walls of the inner housing 30 intersect open intermittently in the circumferential direction and communicate with the outer housing 20 (FIG. 4).

In addition, the total opening area of the plurality of communicating portions 70 communicating with the internal space 32 of the injection device 10 is opened so as to be larger than the opening area of the internal housing opening portion 31, or is opened so as to have the same area. . The air in the insertion portion 150 is taken into the internal space 32 by jetting the liquid from the nozzle 40 , but is made easier to escape to the gap 50 through the plurality of communication portions 70 . In this manner, fluid flow within the injector 10 is facilitated.

In addition, a plurality of holes 90 for draining liquid are provided on the bottom surface of the outer housing 20 . A plurality of holes 90 are arranged in the bottom surface of the outer housing 20 at equal intervals in the circumferential direction at a predetermined distance from the central axis 130 . Since there is a communicating portion 70 that communicates between the inner housing 30 and the outer housing 20 , the liquid ejected from the nozzle 40 passes through the communicating portion 70 and is discharged from the hole 90 .
Moreover, the plurality of holes 90 are opened so that the discharge amount discharged from the holes 90 is larger than the ejection amount of the nozzle 40 . Alternatively, the plurality of holes 90 are opened so that the ejection amount of the nozzle 40 is the same as that of the nozzle 40 . The opening area of the hole 90 is adjusted so that the liquid does not accumulate inside the housing 11 .
Also, the hole 90 is positioned below the communicating portion 70 in the height direction. If the position of the hole 90 is at the same height as or higher than the communicating portion 70 , the liquid from the nozzle 40 will accumulate in the injection device 10 and block the communicating portion 70 . If the communication portion 70 is blocked, the flow of fluid inside the housing 11 due to the ejection of liquid from the nozzle 40 may be hindered. For this reason, it is desirable that the hole 90 be provided below the communicating portion 70 .
In this manner, the opening position and opening area of the hole 90 are adjusted so that liquid does not accumulate in the housing 11 (outer housing 20).

A pump (not shown) is connected to the nozzle 40 in the injection device 10 of the present embodiment. A connected pump feeds the nozzle 40 .
The orientation of the nozzle 40 is slanted downward toward the central axis 130 , and the liquid is discharged into the internal space 32 of the internal housing 30 .
Since the upper part of the inner housing 30 and the upper part of the outer housing 20 are open and communicated (insertion port 150), the foreign matter adhering to the object 80 is ejected from the nozzle 40 while inserting/removing the object 80. It can be washed by any liquid that is
The adherents and liquid separated from the target object 80 are filtered by the filter 100 and the filtered liquid is drained through the holes 90 on the bottom surface of the outer housing 20 .

Next, the fluid flow (liquid and resulting air flow) generated in the injection device 10 of this embodiment will be described.
The nozzle 40 of the injection device 10 is connected to a pump, and liquid is sent to the nozzle 40 from the pump. The nozzle 40 jets liquid downward toward the internal space 32 of the internal housing 30 .
Then, the pressure around the opening 31 above the internal housing 30 decreases from that around the opening 21 above the external housing 20, and the fluid including air flows from the opening 21 above the external housing 20 to the opening 31 above the internal housing 30. .
Since the liquid jetted from the nozzle 40 is discharged downward into the internal space 32, the fluid containing air also flows downward accordingly.

The target object 80 is inserted into the insertion opening 150 . Then, the liquid ejected from the nozzle 40 is ejected downward toward the central axis 130 of the internal housing 30, so that foreign matter (mud, insects, dust, etc.) adhering to the object 80 is removed. Moreover, when the target object 80 is a green onion, a long onion, or the like, the epidermis can be peeled off.
The liquid that has washed away the foreign matter and unnecessary matter adhering to the target object 80 flows toward the bottom of the internal housing 30 .
A filter 100 provided at the bottom of the inner housing 30 catches foreign matter, unnecessary matter, and the like, and allows fluid including liquid to pass through the filter 100 .
The liquid filtered by the filter 100 passes through the communicating portion 70 which is open at the intersection of the inner wall 12 of the internal housing 30 and the bottom surface. The liquid that has passed through the communicating portion 70 is drained through a hole 90 opened in the bottom surface of the outer housing 20 .
Then, the liquid from the nozzle 40 ejecting downward from the central axis 130 of the internal housing 30 generates an airflow flowing downward inside the internal housing 30 (accompanied airflow), and the air around the insertion portion 150 is released into the interior. It is taken into the housing 30 .
Further, the liquid ejected from the nozzle 40 bounces, splashes, or scatters by spraying the liquid onto the target object 80 when peeling off foreign matter adhering to the target object 80 . However, since the liquid ejected from the nozzle 40 is ejected downward along the central axis 130 , splashes, splashes, and the like are captured by the air current flowing downward inside the internal housing 30 .
The fluid (accompanied airflow) sucked into the internal housing 30 and the liquid and splashes rebounding from the target object 80 are directed toward the bottom of the internal housing 30 together with the liquid flowing downward in the internal housing 30 .

The opening area of the communication part 70 is opened so as to be larger than the opening area of the internal housing opening 31 . Therefore, fluid containing air around the insertion portion 150 passes through the communication portion 70 .
Also, the gas and droplets that have flowed into the communicating portion 70 flow into the gap 50 surrounded by the side walls of the outer housing 20 and the inner housing 30 and flow to the upper portion of the ejection device 10 .
In addition, the fluid that has flowed into the gap 50 flows into the insertion port 150 that is open at the top of the inner housing 30 and the outer housing 20, and into the inner housing 30 along the flanges 110 and 120 (folded portions). flow in again.
Also, the fluid around the insertion port 150 flows downward toward the bottom of the internal housing 30 due to the liquid ejected from the nozzle 40 . Therefore, the gas and droplets that have passed through the gap 50 are taken into the inner housing 30 again.

In this way, the injection device 10 has the gap 50 by forming a double structure in which the outer housing 20 accommodates the inner housing 30 . Further, the injection device 10 of this embodiment is configured so that the fluid circulates within the device. In other words, according to this embodiment, a rectified fluid can be generated in the injection device 10 .

According to the injection device 10, it is possible to prevent the liquid ejected from the nozzle 40 from rebounding from the target object 80, and the surroundings of the insertion port 150 being covered with fog or droplets, thereby reducing visibility. That is, the injection device 10 enables the mist, droplets, and the like generated by rebounding to be taken into the injection device by the fluid circulating in the injection device 10 .

(Second embodiment)
2nd Embodiment of this invention demonstrates 10 A of injection apparatuses which have the function to inject gas to the target object 80 with reference to FIG. FIG. 5 is a schematic cross-sectional view of the injection device 10A. The arrows in FIG. 5 represent the flow of gas.

The outer housing 20 and the inner housing 30 of the injection device 10A are, for example, cylindrical housings. The central axis 130 of the outer housing 20 and the inner housing 30 are arranged to coincide with each other. Note that the inner housing 30 housed in the outer housing 20 is similar to the outer housing 20 .
In other words, a gap is created between the outer surface of the inner housing 30 and the inner surface of the outer housing 20, and a gap 50A is formed in the injection device 10A so that the gas can flow.
The side wall (outer wall 13) of the outer housing 20 is provided higher than the side wall (inner wall 12) of the inner housing 30 in the height direction. Also, the upper portions of the outer housing 20 and the inner housing 30 are opened. Accordingly, an insertion port 150 is provided through which the object 80 can be inserted and removed.

The injection device 10</b>A includes an outer wall flange 110 slanted toward the inner space 32 on the upper side of the outer wall 13 . The outer wall flange 110 protrudes from the periphery of the opening 21 of the outer housing 20 so as to be folded back from the upper side of the outer wall 13 . That is, the outer wall flange 110 is inclined toward the inside of the outer housing 20 and downward.
In addition, the outer wall collar portion 110 is provided so as to narrow toward the center of the outer housing 20 . Therefore, the air around the insertion port 150 (opening 21 ) through which the object 80 is inserted and removed can be easily taken into the internal space 32 by the gas ejected from the nozzle 40 .
In addition, by providing the outer wall collar portion 110, it is possible to suppress the rise of foreign matter, dust, etc. from the target object 80. FIG.

The nozzle 40 of the injection device 10A is connected to an air pump (not shown), and the gas is sent from the air pump to the nozzle 40 and ejected from the nozzle 40 .
The nozzle 40 is provided at a position not surrounded by the side wall (inner wall 12 ) of the inner housing 30 but surrounded by the side wall (outer wall 13 ) of the outer housing 20 .
The nozzle 40 is provided below the outer wall flange 110 . Also, a part of the nozzle 40 is provided so as to protrude from the outer wall flange 110 toward the center of the housing.
Nozzle 40 is provided to eject gas downward from central axis 130 .
The nozzles 40 of the present embodiment are composed of two nozzles, which are provided facing each other radially inward in a plan view.

A plurality of communication portions 70A are provided at the intersections of the bottom surface and the side walls of the internal housing 30 so as to communicate with the gap 50A between the side walls of the internal housing 30 and the side walls of the external housing 20 .
Since the injection device 10A does not have the inner wall collar 120 provided in the injection device 10, the internal housing opening 31A of the injection device 10A is wider than the internal housing opening 31 of the injection device 10.
Therefore, the opening area of the communicating portion 70A is wider than that of the communicating portion 70 of the injection device 10, and the gap 50A formed between the side wall of the inner housing 30 and the side wall of the outer housing 20 is the gap of the injection device 10. Wider than 50. .
Since the total opening area of the plurality of communication portions 70A is widened with respect to the opening area of the internal housing opening 31A, the fluid including the air around the insertion portion 150 flows to the communication portion 70A. .

A filter 100 provided in the lower part of the internal housing 30 catches foreign matter separated by the gas jetted by the nozzle 40 .

Foreign matter and the like adhering to the target object 80 are removed by the gas ejected from the nozzle 40 while inserting/removing the object 80 into/from the insertion port 150 .
The foreign matter removed by the gas jetted from the nozzle 40 and the jetted gas flow downward in the internal space 32 inside the internal housing 30 .
Of the gas and foreign matter flowing downward, only the foreign matter is caught by the filter 100 .
Gas passing through the filter 100 goes to the bottom of the inner housing 30 .

The gas that has flowed into the bottom portion of internal housing 30 passes through communicating portion 70A that is open at the intersection of the bottom surface of internal housing 30 and the side wall.
Since the communication portion 70A is opened so as to be wider than the opening area of the internal housing opening portion 31A, the gas that has flowed into the internal space 32 passes through the communication portion 70A.
The communicating portion 70A communicates with the gap 50A between the side wall of the outer housing 20 (outer wall 13) and the side wall of the inner housing 30 (inner wall 12). Therefore, the gas passes through the communicating portion 70A, flows into the gap 50A, and moves toward the insertion port 150. As shown in FIG.
Since the gas ejected from the nozzle 40 is ejected downward toward the central axis 130 of the internal housing 30, the pressure around the opening 31A above the internal housing 30 is higher than that around the opening 21 above the external housing 20. Air flows downward from the opening 21 above the outer housing 20 to the opening 31A above the inner housing 30 .
Therefore, the gas that has passed through the gap 50A and flowed into the insertion section 150 bounces off the outer wall flange 110 and is taken into the housing. drawn inward (internal space 32).

In the injection device 10A, a configuration in which gas is ejected from the nozzle 40 has been described.
In this way, the injection device 10A has a gap due to the double structure in which the outer housing 20 accommodates the inner housing 30, and the gap 50A is provided.
Further, the side wall (outer wall 13) of the outer housing 20 is provided higher than the side wall (inner wall 12) of the inner housing 30, and a flange portion is provided. Further, by directing the nozzle hole of the nozzle 40 toward the downward direction of the central axis 130 of the internal housing 30 and injecting the gas, a gas flow is generated within the housing 11 .
Gas is circulated in the device by the configuration of the injection device 10A of the present embodiment.
In other words, the structure of the present embodiment can produce a rectified gas in the injection device 10A.

Accordingly, when the target object 80 to which the foreign matter is attached is inserted into the injection device 10A, the nozzle 40 ejects gas toward the target object 80 . As a result, it is conceivable that foreign matter adhering to the object 80 may rise up around the insertion port 150 . However, according to the injection device 10A of the present embodiment, the dust and the like that have been blown up can be taken into the injection device 10A by the gas that circulates inside the injection device 10A.

(Third Embodiment)
In a third embodiment of the present invention, an injection device 10B having a function of injecting fluid to an object 80 will be described with reference to FIG. FIG. 6 is a schematic cross-sectional view of the injection device 10B. The arrows in FIG. 6 represent the flow of fluid (flow of jetted liquid and accompanying air).
The injection device 10B has a housing 11 . The housing 11 is composed of, for example, a double structure and includes an outer housing 20 and an inner housing 30 . This housing 11 has an inner wall 12 and an outer wall 13 higher than the inner wall 12 . In this embodiment, the housing 11 includes an inner housing 30 and an outer housing 20 that accommodates the inner housing 30 . The internal housing 30 has an inner wall 12 forming it, and an internal space 32 is formed. The outer housing 20 has an outer wall 13 that constitutes it.

The external housing 20 is, for example, cylindrical and has an opening 21 in its upper portion (cylindrical body with a bottom). Further, the internal housing 30 has a shape similar to that of the housing 20 and has an opening 31 in its upper portion (cylindrical body with a bottom). The inner housing 30 and the outer housing 20 are provided so that their central axes 130 are aligned. Therefore, the object 80 can be inserted and removed from the outside of the external housing 20 into the internal space 32 inside the internal housing 30 through the opening 21 of the external housing 20 and the opening 31 of the internal housing 30. (insertion port 150).

Further, the injection device 10B includes an inner wall collar portion 120 that is inclined toward the inner space 32 on the upper side of the inner wall 12 . The inner wall flange 120 protrudes from the periphery of the opening 31 of the inner housing 30 so as to be folded back from the upper side of the inner wall 12 . That is, the inner wall collar portion 120 (folded portion) is inclined toward the inside and downward of the internal housing 30 . The injection device 10 also includes an outer wall collar portion 110 slanted toward the inner space 32 on the upper side of the outer wall 13 . The outer wall flange 110 protrudes from the periphery of the opening 21 of the outer housing 20 so as to be folded back from the upper side of the outer wall 13 . That is, the outer wall flange 110 is inclined toward the inside of the outer housing 20 and downward.

The ejection device 10B is configured to eject the liquid from the nozzle 40 toward the target object 80 inserted into and removed from the opening 21 of the outer housing 20 and the opening 31 of the inner housing 30 . Therefore, by providing the flanges 110 and 120, it is possible to suppress the rebounding of the liquid from the target object 80, the flying up of foreign matter adhering to the target object 80, and the diffusion of droplets around the device.

The inner wall brim portion 120 is provided so as to narrow toward the center of the inner housing 30 . Therefore, the air around the insertion port 150 (opening 31 ) through which the object 80 is inserted and removed can be easily taken into the internal space 32 by the liquid ejected from the nozzle 40 .

Further, the outer wall collar portion 110 is provided so as to narrow toward the center of the outer housing 20 . Therefore, the air around the insertion port 150 (opening 21 ) through which the object 80 is inserted and removed can be easily taken into the internal space 32 by the liquid ejected from the nozzle 40 .

The injection device 10B includes a nozzle 40 for ejecting liquid. The nozzle 40 is provided so as to be sandwiched between the outer wall flange portion 110 and the inner wall flange portion 120 .
The injection device 10B of the present embodiment is composed of two nozzles 40, which are arranged facing each other radially inward in a plan view. Further, the nozzle 40 is provided above the inner wall flange portion 120 and below the outer wall flange portion 110 . Further, a part of the nozzle 40 is provided so as to protrude from the outer wall collar portion 110 toward the central axis 130 within the housing.
The nozzle of the nozzle 40 is provided so as to be able to jet downward toward the central axis 130 of the internal housing 30 . Therefore, the configuration is such that the air around the insertion port 150 is easily drawn into the internal space 32 of the internal housing 30 .

The injection device 10B also has a filter 100 below the internal housing 30 . The filter 100 has a function of filtering dirty water in which foreign matter adhering to the target object 80 is separated by the liquid ejected from the nozzle 40 . In the present embodiment, a net is used as the filter, but a mesh or punched filter may be used, and the material may be changed according to the foreign matter adhering to the object.

A bolt (not shown) passes through the bottom surface of the inner housing 30 and the bottom surface of the outer housing 20, and the outer housing 20 supports the inner housing 30 via the bolt (with a gap). Therefore, a gap 50 (space portion) is formed from the bottom surface to the side wall between the outer surface of the inner housing 30 (inner wall 12) and the inner surface of the outer housing 20 (outer wall 13).
The injection device 10B includes a plurality of communicating portions 70 (openings) communicating between the gap 50 formed between the inner wall 12 and the outer wall 13 and the internal space 32 . In this embodiment, the portions where the bottom surface and the side walls of the inner housing 30 intersect open intermittently in the circumferential direction and communicate with the outer housing 20 (FIG. 4).

The injection device 10B includes an ozone generator 160 that generates ozone.
One end of the ozone generator 160 is connected to an air pump (not shown), and air is sent from the air pump to the ozone generator. The other is connected to a gas pipe, and the connected gas pipe is connected to the side wall of the outer housing 20 . Thereby, the ozone generated from the ozone generator 160 passes through the gas pipe connected to the outer wall 13 of the outer housing 20, and flows into the gap 50 formed between the side wall of the outer housing 20 and the side wall of the inner housing 30. it is spraying.
The ozone generator 160 can spray ozone onto the gas and droplets passing through the gap 50 to turn part of the fluid flowing within the housing 11 into ozone water.
As a result, the fluid that flows within the injection device 10B can be a fluid containing ozone.

The injection device 10B also has a communicating portion 70 that communicates with the internal space 32 . The total opening area of the plurality of communication parts 70 is opened so as to be larger than the opening area of the internal housing opening 31, or is opened so as to have the same area. In this manner, the fluid flowing within the injection device 10B is made easier to flow.

In addition, a plurality of holes 90 for draining liquid are provided on the bottom surface of the outer housing 20 . A plurality of holes 90 are arranged in the bottom surface of the outer housing 20 at equal intervals in the circumferential direction at a predetermined distance from the central axis 130 . Since there is a communication portion 70 that communicates between the internal housing 30 and the external housing 20, the liquid ejected from the nozzle 40 flows into the internal space 32 of the internal housing 30, passes through the communication portion 70, and is discharged from the hole 90. .
Moreover, the plurality of holes 90 are opened so that the discharge amount discharged from the plurality of holes 90 is larger than the ejection amount from the nozzle 40 . Alternatively, the holes 90 are opened so that the ejection amount is the same as the ejection amount ejected from the nozzle 40 . The opening area of the hole 90 is adjusted so that the liquid does not accumulate inside the housing 11 .
Also, the hole 90 is positioned below the communicating portion 70 in the height direction. If the position of the hole 90 is at the same height as or higher than the communicating portion 70 , the liquid from the nozzle 40 will accumulate in the injection device 10B and block the communicating portion 70 . If the communication portion 70 is blocked, the flow of fluid inside the housing 11 due to the ejection of liquid from the nozzle 40 may be hindered. For this reason, it is desirable that the hole 90 be provided below the communicating portion 70 .
In this manner, the opening position and opening area of the hole 90 are adjusted so that liquid does not accumulate in the housing 11 (outer housing 20).

A pump (not shown) is connected to the nozzle 40 in the injection device 10B of the present embodiment. A connected pump feeds the nozzle 40 .
The orientation of the nozzle 40 is slanted downward toward the central axis 130 , and the liquid is discharged into the internal space 32 of the internal housing 30 .
Since the upper part of the inner housing 30 and the upper part of the outer housing 20 are open and communicated (insertion port 150), the foreign matter adhering to the object 80 is ejected from the nozzle 40 while inserting/removing the object 80. It can be washed with a liquid that is
The adherents and liquid separated from the target object 80 are filtered by the filter 100 and the filtered liquid is drained through the holes 90 on the bottom surface of the outer housing 20 .

Next, the fluid flow (liquid and resulting air flow) generated in the injection device 10B of the present embodiment will be described.
A nozzle 40 of the injection device 10B is connected to a pump, and liquid is sent to the nozzle 40 from the pump. The nozzle 40 jets liquid downward toward the internal space 32 of the internal housing 30 .
Then, the pressure around the opening 31 above the internal housing 30 decreases from that around the opening 21 above the external housing 20, and the fluid including air flows from the opening 21 above the external housing 20 to the opening 31 above the internal housing 30. .
Since the liquid ejected from the nozzle 40 is discharged toward the central axis 130 toward the lower side of the internal space 32, the fluid containing air also flows downward accordingly.

The target object 80 is inserted into the insertion opening 150 . Then, the liquid ejected from the nozzle 40 is ejected downward toward the central axis 130 of the internal housing 30, thereby removing foreign matter (mud, insects, dust, etc.) adhering to the object 80 and cleaning the surface of the object 80. can be peeled off.
The liquid that has washed away the foreign matter adhering to the target object 80 flows toward the bottom of the internal housing 30 .
A filter 100 provided at the bottom of the inner housing 30 catches foreign matter and the like, and the fluid from which the foreign matter has been removed passes through the filter 100 .
The liquid filtered by the filter 100 passes through the communicating portion 70 which is open at the intersection of the inner wall 12 of the internal housing 30 and the bottom surface. The liquid that has passed through the communicating portion 70 is drained through a hole 90 opened in the bottom surface of the outer housing 20 .
On the other hand, the gas and droplets taken into the internal housing flow through the communication part 70, flow into the gap 50 surrounded by the side walls of the external housing 20 and the internal housing 30, and flow to the upper part of the ejection device 10. .
The fluid and droplets that have flowed into the gap 50 are sprayed with ozone by the ozone generator 160 to become fluid containing ozone.
The fluid containing ozone flows into the inner housing 30 and the insertion port 150 which is open at the top of the outer housing 20, and flows into the inner housing 30 again along the flanges 110 and 120 (folded portions).
In addition, around the insertion port 150 , a fluid flowing downward toward the bottom of the internal housing 30 is generated by the liquid ejected from the nozzle 40 . Therefore, the ozone-containing fluid and droplets that have passed through the gap 50 are taken into the inner housing 30 again.
A portion of the ozone-containing fluid taken into the internal housing 30 comes into contact with the liquid ejected from the nozzle 40, becomes ozone water, and circulates again in the injection device 10B.

In this way, the injection device 10B has the gap 50 by adopting a double structure in which the outer housing 20 accommodates the inner housing 30 . Further, the injection device 10B of the present embodiment is configured so that the fluid circulates within the device. Furthermore, by providing the ozone generator 160, the fluid flowing through the apparatus is configured to be a fluid containing ozone.
That is, according to the present embodiment, a rectified fluid can be generated inside the injection device 10B.
Furthermore, according to this embodiment, the liquid ejected from the nozzle 40 can be a fluid containing ozone water and ozone.

According to the injection device 10B, it is possible to prevent the liquid ejected from the nozzle 40 from rebounding from the target object 80, and the surroundings of the insertion port 150 being covered with fog or droplets, thereby reducing visibility. That is, the injection device 10B enables the mist, droplets, and the like generated by rebounding to be taken into the injection device by the fluid circulating in the injection device 10B.
Furthermore, according to the present embodiment, the ozone generated by the ozone generator 160 is sprayed onto the fluid circulating in the injection device 10B, thereby making the liquid and fluid circulating in the injection device 10B a fluid containing ozone water and ozone. The object 80 can be sterilized, disinfected, and sterilized.

The configuration of the present invention has been described above based on the embodiments.
In the above embodiment, the cylinder shape (bottomed cylindrical body) having openings in the upper part of the inner housing and the outer housing was explained, but without being limited to this shape, for example, a square prism or a conical shape may be used.
In addition, although the outer housing and the inner housing are explained as being similar, they do not have to be similar if the configuration of the gap through which the fluid flows is utilized.
In the above embodiment, the bottom surface of the inner housing 30 and the bottom surface of the outer housing 20 are supported by the outer housing using something like a bolt. If so, for example, bolts may be used for the inner wall 12 of the inner housing 30 and the outer wall 13 of the outer housing 20 .
In addition, in the above embodiment, the shape of the opening of the outer housing and the opening of the inner housing are also described as being circular, but without being limited to this, they may be shaped according to the target object 80, such as an ellipse or a rectangle. .
Further, in the above-described embodiment, an upright shape has been described so that the insertion portion of the housing of the injection device is at the top in the height direction. For a long object such as a long potato, the housing may be installed with an oblique inclination. At that time, the hole 90 for draining the liquid may be configured so that the liquid does not accumulate in the housing.
The nozzles have been described in two configurations facing radially inward in plan view. However, one or more nozzles may be installed without adhering to this configuration. Also, in the cross-sectional view, it may be configured such that a single or a plurality of them are installed in the height direction.
As shown in FIG. 3, a plurality of holes for discharging the liquid are opened at positions circumferentially spaced apart from the center axis 130 of the bottom surface of the outer housing 20 by a predetermined distance. Further, the opening area is adjusted so that the flow rate of the liquid discharged from the nozzle is larger than the flow rate of the liquid discharged from the nozzle. In addition, the opening position is configured downward from the communicating portion 70 so that the liquid does not accumulate in the housing. If this configuration is used, the position, number, and size are not particular. Also, the bottom of the outer housing 20 may be sloped or shaped like a mortar so that the liquid can be easily drained.
Further, although the communication portions 70 and 70A have been described as having a shape in which a plurality of openings are intermittently formed in the circumferential direction at the intersection of the bottom surface of the inner housing 30 and the inner wall 12, the openings (holes) to the gap 50 are not limited to this shape. ), the number of openings (holes) may be singular, and the number of openings (holes) does not have to be the intersection of the bottom surface of the inner housing 30 and the inner wall 12 .
Furthermore, by using hypochlorous acid water, sodium hypochlorite, calcium hypochlorite, etc. for the liquid ejected from the nozzle 40, the object 80 can be washed, disinfected, sterilized, disinfected, and disinfected. is also possible.

The present invention is not limited to the above-described embodiments, and can be changed in shape and configuration without departing from the gist thereof.

Reference Signs List 10, 10A, 10B injection device 11 housing 12 inner wall 13 outer wall 20 outer housing 21 outer housing opening 30 inner housing 31, 31A inner housing opening 32 inner space 40 nozzle 50, 50A gap 70, 70A communicating section 80 object 90 hole REFERENCE SIGNS LIST 100 filter 110 outer wall flange 120 inner wall flange 130 center shaft 150 insertion port 160 ozone generator

Claims (4)

one or more nozzles for ejecting fluid;
a housing having an inner wall and an outer wall higher than the inner wall,
The nozzle is provided not surrounded by the inner wall but surrounded by the outer wall so as to inject a fluid from one side in the height direction of the inner wall and the outer wall into a space surrounded by the inner wall,
A communicating portion is provided on the other side in the height direction so as to communicate the gap formed between the inner wall and the outer wall and the space,
An injection device characterized by: An inner wall brim inclined toward the space is provided on one side of the inner wall in the height direction,
2. The injection device of claim 1. An outer wall collar portion inclined toward the space is provided on one side of the outer wall in the height direction,
3. Injector according to claim 1 or 2. A filter covering the communicating portion is provided on the other side of the inner wall in the height direction,
Injection device according to any one of claims 1-3.

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