JPWO2016098621A1 - Dry ice cleaning equipment - Google Patents

Abstract

An object of the present invention is to provide a dry ice cleaning device that can obtain a sufficient cleaning power and can be used easily even if a low-power pumping device is used for pumping dry ice. A dry ice cleaning apparatus includes a supply unit for supplying dry ice, a nozzle for injecting dry ice, a blower for supplying dry ice to the nozzle by blowing, and a compression for supplying compressed gas. Machine 40. The nozzle 50 has an introduction chamber into which dry ice is introduced, a first connection port connected to the blower 30 by piping, and a second connection port connected to the compressor 40 by piping. By supplying the compressed gas to the introduction chamber through the second connection port, the introduction chamber is brought into a substantially vacuum state, and the dry ice introduced into the introduction chamber through the first connection port is ejected. [Selection] Figure 1

Description

  The present invention relates to a dry ice cleaning device for cleaning by spraying dry ice on an object.

  DESCRIPTION OF RELATED ART Conventionally, as disclosed by the following patent document 1, the dry ice cleaning apparatus which sprays and cleans dry ice on a target object is provided. In this type of dry ice cleaning apparatus, dry ice is sprayed from a nozzle onto an object by using a large blower or a compressor.

JP 2013-215684 A

  The above-described conventional dry ice cleaning apparatus not only has a high cleaning ability, but also has an advantage that it can be used for cleaning of equipment that dislikes water that has been difficult to clean in the past. However, in the dry ice cleaning device of the prior art, a large and high output blower or compressor must be used, and it cannot be easily used at home.

  In the dry ice cleaning device of the prior art, dry ice is pumped by a high-output compressor or the like. For this reason, piping having excellent pressure resistance must be used from the apparatus main body to the nozzle. Piping excellent in pressure resistance is heavy because it is thick. For this reason, the conventional dry ice cleaning apparatus is difficult to handle the piping connected to the nozzles, and places a heavy burden on the cleaning operator.

  Therefore, the present invention provides a dry ice cleaning device that can easily be used even when a pumping device used for pumping dry ice has a lower output than that used in the prior art and has sufficient cleaning power. The purpose was to provide.

  The dry ice cleaning apparatus of the present invention provided to solve the above-described problems includes a supply unit that supplies dry ice, a nozzle that injects dry ice, a blower that supplies dry ice to the nozzle by blowing, and a compression A compressor for supplying a gas, wherein the nozzle is connected to a pipe connected to the blower and an introduction chamber into which dry ice is introduced, a spout for ejecting dry ice from the introduction chamber A port and a second connection port connected to the compressor by piping, and supplying the compressed gas to the introduction chamber through the second connection port, thereby bringing the introduction chamber into a vacuum state or a low pressure state The dry ice introduced into the introduction chamber through the first connection port can be ejected from the ejection port.

  In the dry ice cleaning apparatus of the present invention, the compressed gas is supplied to the introduction chamber through the second connection port provided in the nozzle, so that the introduction chamber is in a vacuum state or a low pressure state, and the first connection port is used. The dry ice introduced into the introduction chamber can be ejected from the ejection port. With such a configuration, a strong suction / discharge flow can be created using a small amount of compressed gas supplied from the compressor as an operating source, and the speed of dry ice supplied by the blower can be amplified. Therefore, according to the present invention, a dry ice cleaning apparatus capable of spraying and cleaning dry ice at a speed sufficient for cleaning an object without requiring a large blower or a compressor for pumping the dry ice. Can provide.

  Further, the nozzle used in the dry ice cleaning apparatus of the present invention does not have a rotation mechanism or the like and has a very simple structure. Therefore, according to the present invention, it is possible to provide a dry ice cleaning apparatus in which the nozzle is unlikely to break down and maintenance work can be minimized.

  The dry ice cleaning apparatus of the present invention provided based on the same knowledge includes a supply unit that supplies dry ice, a nozzle that injects dry ice, a compressor that supplies compressed gas, and air blowing to the nozzle. And a blower that supplies dry ice from the supply unit, and the nozzle exhibits an ejector effect by supplying a compressed gas by the compressor, and can take in and inject dry ice supplied by the blower It is a thing.

  The dry ice cleaning apparatus of the present invention employs a nozzle that exhibits an ejector effect by supplying a compressed gas with a compressor. Therefore, according to the dry ice cleaning apparatus of the present invention, the speed of the dry ice supplied by the blower can be greatly amplified and jetted strongly. Therefore, according to the present invention, a dry ice cleaning device capable of cleaning by ejecting dry ice at a speed sufficient for cleaning an object without requiring a large blower or a compressor for pumping the dry ice. Can provide.

  Further, the nozzle used in the dry ice cleaning apparatus of the present invention does not need to be provided with a rotation mechanism or the like, and has a very simple structure. Therefore, according to the present invention, it is possible to provide a dry ice cleaning apparatus in which the nozzle is unlikely to break down and maintenance work can be minimized.

  In the dry ice cleaning device of the present invention described above, the supply unit preferably includes a shearing type crushing device that crushes dry ice while shearing.

  When the shearing type crushing device is provided in the supply unit as in the present invention, the roughness and sharpness of dry ice can be varied. As a result, it is possible to perform washing corresponding to a wide variety of stains as compared with the case of using dry ice having uniform roughness and sharpness.

  In the dry ice cleaning device of the present invention described above, the crushing device has a blade that crushes dry ice while shearing, and a storage portion that stores the blade, and the storage portion is fixed at the supply portion. It is desirable that the outer case and the inner case disposed inside the outer case to accommodate the blade are capable of being taken in and out of the outer case.

  In the dry ice cleaning apparatus according to the present invention, the crushing apparatus includes a housing portion. Moreover, the accommodating part can be taken in and out of the inner case which accommodated the blade with respect to the outer case fixed in the supply part. Therefore, by taking out the interior case from the exterior case, maintenance such as blade replacement can be performed at a location away from the housing portion. Therefore, the dry ice cleaning apparatus of the present invention can easily maintain the crushing apparatus.

  Here, when the housing portion is configured as described above, it is preferable that the outer case and the inner case are brought into close contact with each other in order to suppress gas inflow and outflow. However, when the exterior case and the interior case are brought into close contact with each other, even if it is attempted to take out the interior case for blade maintenance or the like, the operation of pulling out the interior case becomes considerably difficult. Therefore, in a normal use state, it is desirable that the exterior case and the interior case are in close contact with each other and that the interior case can be easily pulled out during maintenance or the like.

  In the dry ice cleaning apparatus of the present invention provided based on such knowledge, the exterior case has an exterior housing portion that houses the interior case, and an exterior lid portion that closes the exterior housing portion, and the exterior An outer peripheral surface of the inner case is in close contact with an inner peripheral surface of the case, and a mounting portion is provided in a portion exposed by opening the outer cover portion in the inner case. A pulling tool for pulling in the pulling direction and pulling out from the outer case can be mounted on the mounting portion.

  In the dry ice cleaning apparatus of the present invention, the outer peripheral surface of the inner case is in close contact with the inner peripheral surface of the outer case, and almost no gap is formed between the outer case and the inner case. Therefore, in a state where the interior case is attached to the exterior case, it is possible to suppress the cool air from the dry ice from leaking through the gap between them or the outside air flowing into the housing portion.

  Moreover, in the dry ice cleaning apparatus of this invention, a traction tool can be mounted | worn with respect to the mounting part of the interior case accommodated in the exterior accommodating part by opening an exterior cover part. In addition, by attaching the traction tool, it is possible to easily pull the interior case and pull it out from the exterior case.

  In the dry ice cleaning apparatus of the present invention described above, the interior case fixes the interior housing portion that houses the blade, the interior lid portion that closes the interior housing portion, and the interior housing portion and the interior lid portion. It is preferable that a mounting portion for mounting the traction tool is formed by removing the fixing tool.

  According to this configuration, the traction tool can be mounted on the mounting portion formed by removing the fixing tool. In other words, in the dry ice cleaning device of the present invention, the attachment location of the fixing device provided for fixing the interior lid portion to the interior housing portion can also be used as an attachment portion for attaching the traction tool. There is no need to provide a separate part. Therefore, according to the present invention, it is possible to easily pull out the interior case from the exterior case while simplifying the device configuration.

  In the dry ice cleaning device of the present invention described above, the crushing device includes a power transmission shaft that transmits power to the blade, and a power source that is coupled to the power transmission shaft, and the power transmission shaft. Projecting from the interior case, and the exterior case is provided with a shaft holding portion for retaining the power transmission shaft so as to be slidable in the pulling direction, and connecting the power transmission shaft and the power source. It is desirable to be able to be released outside the exterior case.

  According to such a configuration, after the connection between the power transmission shaft and the power source is released outside the exterior case, the power transmission shaft protruding outside the exterior case is gripped and pulled in a predetermined pulling direction. The case can be pulled out from the exterior case. Therefore, according to the present invention, the power transmission shaft can be effectively used for taking out the interior case.

  In the dry ice cleaning apparatus of the present invention described above, the supply unit has a charging unit capable of charging dry ice, and a discharge port provided at the bottom of the charging unit, on the bottom side of the charging unit, It is desirable to have an inclined portion formed so as to have a downward slope toward the discharge port.

  As in the present invention, by providing an inclined portion on the bottom side of the input portion and inclining toward the discharge port, the dry ice input to the input portion is smoothly discharged from the discharge port. Thereby, generation | occurrence | production of the supply failure of dry ice can be suppressed to the minimum.

  The dry ice cleaning apparatus of the present invention described above preferably has a control unit that can arbitrarily adjust the output of the blower.

  As in the present invention, by making it possible to arbitrarily adjust the output of the blower, it is possible to optimize the sprayed state of dry ice in consideration of the strength of the object to be cleaned.

  In the dry ice cleaning apparatus of the present invention described above, the supply unit may have a charging unit capable of charging dry ice, and the side surface of the charging unit may have a multiple structure.

  According to such a configuration, it is possible to suppress breakage of the charging unit due to the influence of an increase in internal pressure of the supply unit.

  The dry ice cleaning apparatus of the present invention described above includes a plurality of operations including a small output mode in which the blower is operated while the compressor is stopped, and a large output mode in which both the compressor and the blower are operated. It is preferable that the dry ice can be ejected in an operation mode selected from the modes.

  By allowing dry ice to be ejected in an operation mode selected from an operation mode such as a small output mode and a large output mode as in the present invention, the degree of contamination of the object to be cleaned, the strength of the object to be cleaned, and the like are taken into account. Therefore, it is possible to clean it by spraying dry ice with an appropriate strength.

  According to the present invention, sufficient dry cleaning power can be obtained even if a pumping device used for pumping dry ice has a lower output than that used in the prior art, and can be used easily. Equipment can be provided.

It is explanatory drawing which showed typically the structure of the dry ice cleaning apparatus which concerns on one Embodiment of this invention. It is sectional drawing which showed typically the internal structure of the dry ice cleaning apparatus shown in FIG. It is sectional drawing which showed the structure of the nozzle used for the dry ice cleaning apparatus shown in FIG. (A) is a perspective view of a dry ice charging unit used in the dry ice cleaning apparatus shown in FIG. 2, (b) is a sectional view, and (c) is an enlarged view of part A of (b). It is sectional drawing which showed typically the internal structure of the dry ice cleaning apparatus which concerns on a modification. It is a perspective view which shows the accommodating part with which the dry ice cleaning apparatus shown in FIG. 5 is provided. It is a disassembled perspective view of the accommodating part shown in FIG. It is the perspective view which showed the interior case with which the accommodating part of FIG. 6 is provided. It is a disassembled perspective view of the interior case shown in FIG. It is the top view which showed the internal structure of the interior case shown in FIG. It is the perspective view which showed the state which has taken out the interior case from the exterior case in the principal part shown in FIG.

  Hereinafter, a dry ice cleaning apparatus 10 according to an embodiment of the present invention will be described in detail with reference to the drawings. The dry ice cleaning device 10 is for cleaning by spraying pellets of dry ice further onto the object to be cleaned together with gas (air) blown out at high speed. When dry ice is sprayed onto the object to be cleaned, a temperature difference occurs between the contaminants and the coating adhering to the surface of the object to be cleaned and the ground due to the cold heat (−79 ° C.) of the dry ice. Weakens the bond. Further, by causing the dry ice to collide with the surface of the object to be cleaned at high speed, it is possible to give an impact that triggers peeling. The dry ice enters the object to be cleaned and the coating, hits the surface (base) of the object to be cleaned, sublimates (vaporizes), and becomes carbon dioxide gas. Contaminants and coatings can be peeled off from the surface of the object to be cleaned by volume expansion when dry ice sublimates and the force of compressed gas (air), and can be cleaned.

≪About configuration of dry ice cleaning device 10≫
Hereinafter, the configuration of the dry ice cleaning apparatus 10 of the present embodiment will be described in detail. As shown in FIGS. 1 and 2, the dry ice cleaning apparatus 10 includes a supply unit 20, a blower 30, a compressor 40, a nozzle 50, a piping system 70, and a control unit 80. The dry ice cleaning device 10 supplies pellets of dry ice prepared in the supply unit 20 to the nozzle 50 by the blower 30 and supplies compressed gas (compressed air) to the nozzle 50 by the compressor 40. As a result, the airflow containing dry ice can be amplified and ejected from the nozzle 50. Hereinafter, the configuration of each unit will be described in more detail.

  The supply unit 20 is for supplying dry ice used for cleaning. The supply unit 20 includes an input unit 22 for supplying dry ice and a crushing device 24. The charging unit 22 is provided on the top surface 12 a side of the main body 12 constituting the dry ice cleaning device 10. The input part 22 is roughly divided into a storage part 22a and a cover part 22b. The accommodating part 22a is comprised by the hollow cylinder which has the discharge port 22c in the bottom side, and has the inlet 22d in the upper end part, and can close the inlet 22d with the cover part 22b. The supply part 20 can discharge | release the dry ice thrown into the accommodating part 22a from the insertion port 22d sequentially downward from the discharge port 22c provided in the bottom side. Moreover, the accommodating part 22a has the inclination part 22e formed so that it might become a downward slope toward the discharge port 22c on the bottom side. Therefore, the dry ice thrown into the accommodating part 22a is smoothly guided to the discharge port 22c along the inclined part 22e.

The crushing device 24 is for crushing pellet-shaped dry ice while shearing. As the crushing device 24, any type of crushing device may be used, but in this embodiment, a so-called shearing type having the same structure as the shredder is adopted. Specifically, the crushing device 24 has a configuration in which shearing blades (not shown) are provided on two rotating shafts 26 and 28 arranged in parallel at a predetermined interval. The crushing device 24 can crush and crush dry ice introduced from above into the gap between the rotary shafts 26 and 28 with a blade and discharge it downward.
Moreover, as the pellet-shaped dry ice prepared in the supply unit 20, for example, a piece having a diameter of about 1 mm and a length of about 3 mm is used. By shearing such a thing with the crushing apparatus 24, the crushed material of dry ice mainly having a diameter of 1 mm or less is formed.

  The supply unit 20 is arranged in the main body 12 of the dry ice cleaning device 10 so as to merge with an intermediate portion of a blower pipe 72 described in detail later. Therefore, the supply unit 20 can supply the dry ice crushed by the crushing device 24 in the middle of the blower pipe 72.

  The blower 30 is configured by a so-called blower. The blower 30 is provided to supply dry ice toward the nozzle 50 by blowing air. The blower 30 is connected to an upstream end of a blower pipe 72 arranged so as to extend toward the nozzle 50 side, and can blow air toward the nozzle 50 side. As described above, the supply unit 20 joins in the middle of the blower pipe 72. Therefore, by operating the blower 30, it is possible to generate an air flow including the crushed dry ice supplied in the middle of the blower pipe 72 toward the nozzle 50.

  The compressor 40 is constituted by a so-called compressor. The compressor 40 is for supplying compressed gas (compressed air in the present embodiment), and is connected to a nozzle 50 described later via a compressed gas pipe 74.

  The nozzle 50 is for injecting dry ice onto the object to be cleaned. As shown in FIG. 3, the nozzle 50 has a hollow nozzle body 52, and the nozzle body 52 has an introduction chamber 54, a jet outlet 56, a first connection port 58, a second connection port 60, and an opening reduction portion 62. It is set as the structure which provided. The introduction chamber 54 is a portion into which dry ice is introduced, and is configured by a space formed inside the nozzle body 52 so as to extend in the axial direction. The ejection port 56 is an opening for ejecting dry ice from the introduction chamber 54, and is provided at the end of the introduction chamber 54.

  The first connection port 58 is a connection port that is piped to the blower 30 and communicates with the introduction chamber 54. Specifically, the first connection port 58 is connected to a nozzle connection pipe 76 described in detail later. The nozzle connection pipe 76 is a hose connected to the end of the blower pipe 72 connected to the blower 30. Therefore, the blower 30 is connected to the first connection port 58 via the blower pipe 72 and the nozzle connection pipe 76. Therefore, by operating the blower 30, it is possible to generate an airflow that flows from the first connection port 58 side toward the ejection port 56 side as indicated by an arrow in FIG.

  The second connection port 60 is a connection port to which the compressor 40 is piped via a compressed gas pipe 74. The second connection port 60 communicates with the introduction chamber 54 through the opening reducing portion 62. The opening reducing portion 62 has an opening width smaller than the opening diameter of the second connection port 60 and has an opening 64 with respect to the introduction chamber 54. The opening 64 can be configured by, for example, a slit. For this reason, the compressed gas introduced from the second connection port 60 passes through the opening reducing portion 62 to be further amplified in momentum. Further, as indicated by an arrow in FIG. 3, the opening 64 opens so that compressed air can be ejected in a direction from the first connection port 58 side toward the ejection port 56 side. Therefore, by supplying the compressed gas through the second connection port 60, a so-called ejector effect appears in the nozzle 50, and the inside of the introduction chamber 54 becomes a vacuum state or a low pressure state. As a result, a suction force acts in the direction from the first connection port 58 toward the introduction chamber 54, and a strong airflow in which the airflow sucked from the blower 30 side and the compressed air supplied from the compressor 40 are merged. It can be ejected from the ejection port 56.

  The piping system 70 includes a blower pipe 72, a compressed gas pipe 74, and a nozzle connection pipe 76. The blower pipe 72 is a pipe connected to the blower 30 and is disposed in the main body 12 of the dry ice cleaning apparatus 10. The supply unit 20 is connected to the middle of the blower pipe 72. Thereby, the dry ice crushed by the crushing device 24 can be introduced into the blower pipe 72. The compressed gas pipe 74 is a pipe connecting the compressor 40 and the second connection port 60 of the nozzle 50. The compressed gas pipe 74 is configured by a hose having flexibility and pressure resistance. The nozzle connection pipe 76 is a pipe that connects the end of the blower pipe 72 and the first connection port 58 of the nozzle 50. The nozzle connection pipe 76 is configured by a flexible hose such as a so-called bellows pipe. In addition, since the nozzle connection pipe 76 is a pipe through which the airflow sent from the blower 30 flows, it does not have to have a high pressure resistance like the compressed gas pipe 74.

  The control unit 80 is for performing operation control of the dry ice cleaning apparatus 10. The control unit 80 is provided with a blower output adjusting unit 82 for adjusting the output of the blower 30. The blower output adjustment unit 82 is configured by a volume with a switch or the like, and can adjust the output of the blower 30 steplessly.

<< Operation of Dry Ice Cleaning Device 10 >>
Hereinafter, the operation of the above-described dry ice cleaning apparatus 10 will be described. The dry ice cleaning apparatus 10 can be operated in two operation modes including a large output mode and a small output mode.

  The large output mode is an operation mode in which both the blower 30 and the compressor 40 are operated to eject dry ice from the nozzle 50. When the dry ice cleaning device 10 is operated in the large output mode, the air flow including the dry ice crushed by the crushing device 24 is introduced into the introduction chamber 54 of the nozzle 50 through the air supply pipe 72 and the nozzle connection pipe 76. To be introduced. On the other hand, when the compressor 40 is operated, the compressed gas is supplied into the introduction chamber 54 via the second connection port 60, and a so-called ejector effect is exhibited. Thereby, the inside of the introduction chamber 54 is in a vacuum state or a low pressure state, and a suction force in the direction from the first connection port 58 toward the inside of the introduction chamber 54 acts. Moreover, the airflow containing the dry ice sucked from the blower 30 side and the compressed air supplied from the compressor 40 merge to form a powerful airflow and are ejected from the ejection port 56. Therefore, by operating the dry ice cleaning apparatus 10 in the large output mode, an air flow containing dry ice can be blown to the cleaning target portion at a higher speed, and a strong cleaning effect can be obtained. In addition, by adjusting the output of the blower 30 using the blower output adjusting unit 82, the dry ice blowing state can be optimized according to the strength of the object to be cleaned. Specifically, the blown state of the dry ice can be optimized according to the object to be cleaned, such as setting the output of the blower 30 to be low when it breaks if there is momentum, such as a fin of a substrate or an air conditioner.

  The small output mode is an operation mode in which the blower 30 is operated with the compressor 40 stopped. When the dry ice cleaning apparatus 10 is operated in the small output mode, the compressor 40 does not operate, and thus the above-described ejector effect is not exhibited. Therefore, when the dry ice cleaning apparatus 10 is operated in the small output mode, the airflow amplification effect as in the case of operating in the large output mode cannot be obtained. In other words, in the small output mode, the air flow including the dry ice crushed by the crushing device 24 is introduced into the introduction chamber 54 via the blower pipe 72 and the nozzle connection pipe 76 and is not amplified, and the jet outlet 56 is not amplified. Erupted from. Therefore, by operating the dry ice cleaning device 10 in the small output mode, it is possible to perform cleaning by blowing an air stream containing dry ice on the object to be cleaned more slowly than in the case of operating in the large output mode. Further, even in the small output mode, the cleaning effect can be adjusted by adjusting the output of the blower 30 using the blower output adjusting unit 82.

  Further, by enabling operation in the small output mode, it is possible to perform cleaning using dry ice even in a place where the compressor 40 is difficult to use, for example, indoor work such as a private house. If the operation in the small output mode is enabled, the dry ice cleaning apparatus 10 can be effectively used for cleaning operations such as air conditioning and pest control that do not require the high output mode. Further, when the operation is performed in the small output mode, the noise is reduced as much as the compressor 40 is not used, and the vehicle can be easily moved.

  As described above, in the dry ice cleaning apparatus 10 of the present embodiment, a nozzle 50 that can exhibit an ejector effect by supplying a compressed gas by the compressor 40 is employed. By adopting such a nozzle 50, a powerful suction / discharge flow is created using a small amount of compressed gas supplied from the compressor 40 as an operating source, and the speed of the dry ice supplied by the blower 30 is amplified. Can do. Therefore, in the dry ice cleaning device 10, the dry ice is ejected at a speed sufficient for cleaning the object without requiring the large blower 30 and the compressor 40 for pumping the dry ice, and the object to be cleaned is discharged. Can be washed.

  Moreover, the nozzle 50 mentioned above does not have a rotation mechanism etc., and its structure is very simple. Therefore, the dry ice cleaning apparatus 10 is less likely to cause a failure of the nozzle 50, and the maintenance effort is minimized.

  In addition, the nozzle 50 mentioned above is only what showed an example of the nozzle which can be utilized for the dry ice washing | cleaning apparatus 10, and what kind of thing may be used as long as it operate | moves by the same working principle. Specifically, the nozzle 50 may have, for example, a gun-type appearance in consideration of easiness to hold in use.

  As described above, in the dry ice cleaning device 10 according to the present embodiment, the shearing crushing device 24 is provided in the supply unit 20. With such a configuration, dry ice can have different eye roughness and sharpness and can be used for cleaning. As a result, it is possible to perform washing corresponding to a wide variety of stains as compared with the case of using dry ice having uniform roughness and sharpness.

  In the present embodiment, an example in which the crushing device 24 is provided in the supply unit 20 has been shown, but the present invention is not limited to this. Specifically, dry ice may be preliminarily pulverized and prepared in the supply unit 20 by providing a device corresponding to the crushing device 24 separately. Moreover, although the example using a shearing-type thing was shown as the crushing apparatus 24, this invention is not limited to this, You may use what crushes dry ice by another crushing form.

  The dry ice cleaning device 10 described above may be capable of controlling the operation of the crushing device 24 by the control unit 80 or the like, for example. In such a configuration, the supply amount of dry ice can be adjusted by adjusting the rotation speed of the crushing device 24. Thereby, the cleaning effect by the dry ice cleaning apparatus 10 can be arbitrarily adjusted.

  Further, the dry ice cleaning apparatus 10 has a structure in which an inclined portion 22e is provided on the bottom side of the input portion 22 into which dry ice is charged in the supply portion 20, and is inclined toward the discharge port 22c. Thereby, the dry ice thrown into the insertion part 22 is discharged | emitted smoothly from the discharge port 22c, and generation | occurrence | production of the supply failure of dry ice can be suppressed to the minimum. In this embodiment, the example in which the inclined portion 22e is provided in the charging portion 22 is shown, but the present invention is not limited to this, and the inclined portion 22e may not be provided.

  Further, the above-described dry ice cleaning apparatus 10 can arbitrarily adjust the output of the blower 30 by operating the blower output adjusting unit 82 provided in the control unit 80. Accordingly, it is possible to spray and dry ice with an appropriate strength in consideration of the degree of contamination of the object to be cleaned and the strength of the object to be cleaned. In the present embodiment, an example in which an output capable of adjusting the output of the blower 30 in a stepless manner is provided as the blower output adjusting unit 82, but the present invention is not limited to this. Specifically, the dry ice cleaning apparatus 10 may be configured such that, for example, the blower output adjustment unit 82 can adjust the output in a plurality of stages, or the blower output adjustment unit 82 is not provided.

  The dry ice cleaning apparatus 10 described above is provided with a small output mode and a large output mode as operation modes, and can be carried out by selecting either one of the operation modes. Accordingly, it is possible to spray and dry ice with an appropriate strength in consideration of the degree of contamination of the object to be cleaned and the strength of the object to be cleaned. In the present embodiment, an example in which the small output mode and the large output mode are provided as the operation mode is shown, but the present invention is not limited to this, and the operation is performed even in an operation mode different from these operation modes. It is possible to make it possible, or to be operable only in the high output mode.

  In the dry ice cleaning apparatus 10 described above, the input unit 22 may be anything as long as it can input dry ice, but it is preferable that the input unit 22 has a configuration that is not damaged in the use environment. For example, as shown in FIG. 4, the input unit 22 may be configured by a container having a multilayer structure. In the example shown in FIG. 4, a charging portion main body 22 x provided with a heat insulating layer 22 g formed of a heat insulating material such as polystyrene foam is provided between the resin inner layer portion 22 f and the outer layer portion 22 h. Thus, by making the injection | throwing-in part 22 into a multilayer structure, the intensity | strength of the injection | throwing-in part 22 can be improved and the damage by influence, such as a raise of the internal pressure by the wind pressure from the blower which makes the air blower 30, can be suppressed.

  As shown in FIGS. 4B and 4C, the insertion portion 22 is configured such that a heat insulating material 22i is further attached to the outside of the insertion portion main body 22x (outside of the outer layer portion 22h). The heat insulating material 22i can be formed of a heat insulating material such as urethane. In order to prevent dew condensation on the surface of the charging unit 22, the heat insulating material 22 i is preferably made of a material having water absorption and water retention properties such as a porous material. Thereby, the heat insulation of the injection | throwing-in part 22 can further be improved, and the dew condensation etc. on the surface of the injection | throwing-in part 22 can be suppressed.

  In the example shown in FIG. 4, the charging unit main body 22x has a three-layer structure including the inner layer portion 22f, the outer layer portion 22h, and the heat insulating layer 22g. However, the present invention is not limited to this. is not. Specifically, the insertion portion main body 22x may have a single layer structure by using a material having high pressure resistance, or may have a multilayer structure of two layers or four layers or more. Moreover, in the example shown in FIG. 4, although the example which suppressed dew condensation was shown, improving the heat insulation by winding the heat insulating material 22i further around the insertion part main body 22x, this invention is limited to this. It is good also as a structure which does not provide the heat insulating material 22i.

  Although the dry ice washing | cleaning apparatus 10 mentioned above provided the crushing apparatus 24 in order to further shear the dry ice prepared in the injection | throwing-in part 22, this invention is not limited to this. For example, when using in the form which supplies dry ice in the state crushed to the input unit 22, the crushing device 24 may not be provided. Further, the dry ice cleaning device 10 may be replaced with the crushing device 24 such as the crushing device 124 shown in FIGS. Hereinafter, the configuration of the crushing device 124 will be described in more detail.

  The crushing device 124 includes a power source 130 configured by a motor and the like, blades 140 and 142 (see FIGS. 9 and 10) that operate by receiving power from the power source 130, and a housing unit 150 that houses the blades 140 and 142. And. The power source 130 has a posture in which the rotating shaft 132 is directed toward the housing portion 150, and is disposed in the main body 12. The rotating shaft 132 is connected to a power transmission shaft 148c, which will be described later, protruding from the housing portion 150 side by a shaft coupling portion 134 provided between the housing portion 150 and the power source 130. Therefore, in the crushing device 124, the power source 130 and the power transmission shaft 148 c can be connected to and disconnected from the outside of the outer case 180 that constitutes the housing portion 150.

  The blades 140 and 142 are for crushing dry ice while shearing the same as the blade provided in the crushing device 24 described above. As shown in FIGS. 9 and 10, the blades 140 and 142 are respectively attached to two rotating shafts 144 and 146 that are arranged substantially in parallel, and interlocked with the rotation of the rotating shafts 144 and 146. It can be turned. The rotating shafts 144 and 146 are connected to the power transmission mechanism 148 at the ends. The blades 140 and 142 are accommodated in the accommodating portion 150 together with the rotating shafts 144 and 146 and the power transmission mechanism 148.

  The power transmission mechanism 148 transmits power input from the power source 130 side to the rotating shafts 144 and 146 and operates the blades 140 and 142. The power transmission mechanism 148 includes drive gears 148a and 148b provided on one end side of the rotating shafts 144 and 146, a power transmission shaft 148c connected to the power source 130, and an input provided on an end of the power transmission shaft 148c. And a gear 148d. The drive gears 148a and 148b mesh with each other. Further, the input gear 148d meshes directly or indirectly with one of the drive gears 148a and 148b. In the present embodiment, the input gear 148d is indirectly meshed with the drive gear 148b via a gear (not shown). Therefore, by rotating the power transmission shaft 148c, power is transmitted to the drive gears 148a and 148b via the input gear 148d. Thereby, the blades 140 and 142 connected to the rotating shafts 144 and 146 can be rotated.

  The accommodating part 150 is for accommodating the blades 140 and 142 and the power transmission mechanism 148 described above. The accommodating portion 150 is constituted by a case having a multiple structure (in this embodiment, a double structure) including an interior case 160 and an exterior case 180.

  As shown in FIG. 5, the interior case 160 is a case accommodated inside the exterior case 180. The inner case 160 may have any shape, but in this embodiment, as shown in FIGS. 8 and 9, the inner case 160 has a substantially rectangular parallelepiped appearance, and is mainly made of a resin and a hollow box. The part is formed. Specifically, the interior case 160 includes a top surface 160a and a bottom surface 160b, surfaces provided on both sides in the longitudinal direction (hereinafter also referred to as side surfaces 160c and 160d), and surfaces provided on both sides in the short direction (hereinafter referred to as front surfaces). 160e and back surface 160f)). The interior case 160 is formed by mounting the interior lid portion 164 to the interior housing portion 162 and fixing both together by a fixture 166 to be integrated.

  The interior housing portion 162 is a member in which a portion that forms the bottom surface 160b and the side surfaces 160c and 160d of the interior case 160 is formed. The interior housing portion 162 has a plurality of spaces formed by dividing the interior with a resin plate or the like. Specifically, as shown in FIG. 10, the blade housing portion 163, the power transmission mechanism housing portion 165, the side space forming portions 167 and 169, and the like are formed inside the interior housing portion 162.

  The blade accommodating portion 163 is a space for accommodating the blades 140 and 142. The blade accommodating portion 163 can accommodate the blades 140 and 142 in a state where the blades 140 and 142 are positioned substantially parallel with a predetermined clearance. When the blades 140 and 142 are disposed in the blade housing portion 163, the rotating shafts 144 and 146 protrude from the power transmission mechanism housing portion 165 side. A discharge port 162 a is provided on the bottom surface of the blade housing portion 163, that is, the bottom surface 160 b of the interior case 160. The discharge port 162 a is provided at a position below the blades 140 and 142, and the dry ice crushed by the blades 140 and 142 can be discharged from the interior case 160.

  The power transmission mechanism housing portion 165 is a space provided at a position adjacent to one side in the longitudinal direction of the blades 140 and 142 with respect to the blade housing portion 163. The power transmission mechanism accommodating portion 165 accommodates a member constituting the power transmission mechanism 148. Specifically, the power transmission mechanism accommodating portion 165 accommodates gears such as drive gears 148a and 148b attached to the ends of the rotating shafts 144 and 146, the input gear 148d, and members associated therewith. Yes. As shown in FIGS. 8 and 10, the power transmission shaft 148c connected to the input gear 148d protrudes outward through a through hole 160g provided in the side surface 160c of the interior case 160. In the power transmission mechanism housing 165, the drive gears 148a and 148b and the input gear 148d are meshed so that power can be transmitted. Therefore, by inputting rotational force through the power transmission shaft 148c, power can be transmitted directly or indirectly from the input gear 148d to the drive gears 148a and 148b, and the blades 140 and 142 can be rotated. In this embodiment, the rotational force input via the power transmission shaft 148c is indirectly transmitted from the input gear 148d via a gear (not shown) to the drive gears 148a and 148b, and the blades 140 and 142 rotate.

  As shown in FIG. 10, the side space forming portions 167 and 169 form a gap between the wall surfaces 163 a and 163 b that define the blade housing portion 163 and the wall surfaces that form the front surface 160 e and the back surface 160 f of the interior case 160. Part. In other words, the side space forming portions 167 and 169 are short in the blade receiving portion 163, that is, in a direction intersecting the rotation axes 144 and 146 of the blades 140 and 142 (in the present embodiment, substantially orthogonal directions). It is a part which forms a space | gap in the position adjacent to. The side space forming portions 167 and 169 have the same length as the blade housing portion 163 in the longitudinal direction, but the length in the short direction (the direction from the front surface 160e toward the back surface 160f) is longer than that of the blade housing portion 163. short.

  In addition to the configuration described above, the interior housing portion 162 is provided with contact portions 170 and 172. The contact portions 170 and 172 are substantially parallel to the wall surfaces 163a and 163b, and are formed to rise upward from the bottom surface (bottom surface 160b) of the interior housing portion 162. The abutting portions 170 and 172 are portions that abut against the surfaces forming the front surface 160e and the back surface 160f from the inside of the interior case 160 in a state in which an interior lid portion 164 described later is mounted on the interior housing portion 162. The contact portions 170 and 172 are provided with a plurality of (four in the present embodiment) screw holes 170 a and 172 a at a predetermined pitch in the longitudinal direction of the interior case 160.

  As shown in FIG. 9, the interior lid portion 164 is a member that is attached to the interior housing portion 162. The interior lid part 164 mainly constitutes the top surface 160a, the front surface 160e, and the back surface 160f of the interior case 160. The interior lid 164 is provided with an introduction port 164a on the surface forming the top surface 160a. The introduction port 164 a is provided at a position above the blades 140 and 142 in the assembled state of the interior case 160. The inlet 164a is opened between the blades 140 and 142 at a position where dry ice can be supplied.

  The interior lid 164 has screw insertion holes 164b and 164b on the surfaces forming the front surface 160e and the back surface 160f. The screw insertion holes 164b and 164b are provided at positions where the screw holes 170a and 172a provided in the contact portions 170 and 172 arrive when the interior lid portion 164 is attached to the interior housing portion 162, respectively.

  The fixture 166 is a member for fixing and integrating the interior housing portion 162 and the interior lid portion 164. The fixing tool 166 may be anything as long as it can fix the interior housing portion 162 and the interior lid portion 164, but a screw is used as the fixing device 166 in the present embodiment. The fixing device 166 is screwed over the screw holes 170a and 172a and the screw insertion holes 164b and 164b in a state where the interior cover portion 164 is mounted on the interior housing portion 162, and can be removed from the outside of the interior case 160 as necessary. It is said that.

  As shown in FIG. 5, the outer case 180 is disposed between the input unit 22 and the blower pipe 72 in the supply unit 20, and is connected to both. As shown in FIGS. 6 and 7, the exterior case 180 is a substantially rectangular parallelepiped case having an internal space that can accommodate the interior case 160 described above. The exterior case 180 can have various configurations. In the present embodiment, the exterior case 180 includes an exterior housing portion 182 and an exterior lid portion 184, and a main portion is configured by a combination of both.

  The exterior housing portion 182 is a box-shaped member having a top surface 182a, a bottom surface 182b, side surfaces 182c and 182d, and a back surface 182e. These surfaces constitute five surfaces of the top surface 180a, the bottom surface 180b, the side surfaces 180c and 180d, and the back surface 180e of the exterior case 180, respectively. The exterior housing portion 182 has an opening 186 on the front surface 180f side. The shape and size of the internal space 188 of the exterior housing portion 182 are substantially the same as the exterior shape and size of the interior case 160 described above. Specifically, the size of the opening 186 is set such that the front surface 160e and the back surface 160f of the interior case 160 can be accommodated without a substantial gap. Further, the depth of the internal space 188 (the length from the front surface 180f side to the back surface 180e side) can be accommodated with almost no gap when the exterior cover portion 184 that forms the front surface 180f of the exterior case 180 is mounted after the interior case 160 is accommodated. The size is assumed.

  A groove 190 (shaft holding portion) is provided on the side surface 182c of the exterior housing portion 182. The groove 190 is provided to slidably hold the power transmission shaft 148 c protruding from the side surface 160 c of the interior case 160 when the interior case 160 is inserted into and removed from the internal space 188 of the exterior housing portion 182. .

  An introduction port 182g is provided on the top surface 182a (top surface 180a) of the exterior housing portion 182, and a discharge port 182h is provided on the bottom surface 182b (bottom surface 180b). The introduction port 182g and the discharge port 182h are provided at positions corresponding to the introduction port 164a and the discharge port 162a of the interior case 160 accommodated in the exterior case 180, respectively.

  The exterior lid portion 184 is a member that constitutes the front surface 180 f of the exterior housing portion 182 by being attached so as to close the opening 186. The outer lid portion 184 may be anything as long as it can close the opening 186, but in this embodiment, it has a substantially “L” -shaped appearance. Specifically, the exterior lid 184 includes a front component 184a and a side component 184b provided so as to be substantially perpendicular to the front component 184a. The front component 184a is a substantially rectangular plate-like portion, and has a size capable of closing the opening 186 provided on the front 180f side. Further, the side surface configuration portion 184b is a plate-like portion that is mounted so as to overlap the side surface 182c of the exterior housing portion 182. A hole 184c is provided in the side surface configuration portion 184b. The hole 184c is for inserting and holding the power transmission shaft 148c (shaft holding portion) when the outer lid portion 184 is attached to the outer housing portion 182. The exterior lid 184 may be fixed by any method. In this embodiment, the exterior lid 184 is attached to the outer edge of the front component 184a or the plurality of screw holes 184d provided in the side component 184b, thereby providing the exterior lid 184. The housing portion 182 and the exterior lid portion 184 are integrated.

  Here, in order to perform maintenance of the blades 140 and 142, the power transmission mechanism 148, and the like, it is necessary to take out the interior case 160. However, as described above, the shape and size of the internal space 188 of the exterior housing portion 182 of the exterior case 180 are substantially the same as the exterior shape and size of the interior case 160. Therefore, there is no gap of sufficient size between the outer case 180 and the inner case 160 for inserting a finger or a tool. Therefore, the interior case 160 cannot be taken out simply by removing the exterior lid 184 so that the interior case 160 can be seen from the opening 186. Therefore, in the present embodiment, as shown in FIG. 11, the interior case 160 can be pulled out from the exterior case 180 by attaching the traction tool 200 to the interior case 160 as necessary.

  The traction tool 200 may be anything as long as it is attached to the interior case 160 and can be pulled, but the wing screw 202 is employed in the present embodiment. Specifically, the thumbscrew 202 can be attached to the interior case 160 in place of the fixture 166 by removing the fixture 166 (screw) attached to the front surface 160 e of the interior case 160. That is, when one of the fixtures 166 attached to the interior case 160 is removed, the traction tool 200 (the thumbscrew 202) is attached by the screw hole 170a and the screw insertion hole 164b from which the fixture 166 is removed. A mounting unit 204 is configured. The wing screw 202 may be stored separately from the main body 12 of the dry ice cleaning apparatus 10, but in this embodiment, a holding portion 206 that holds the wing screw 202 is provided inside the main body 12. Although the holding part 206 may be comprised by the case etc. for accommodating the thumbscrew 202, in this embodiment, it is comprised by the screw hole which can screw in the thumbscrew 202. FIG.

  When the wing screw 202 is attached to the interior case 160, the shaft portion 102a and the head portion 102b of the wing screw 202 protrude toward the operator side (front side), and the operator can hold it. Further, when the exterior lid portion 184 is removed and the connection between the power source 130 and the power transmission shaft 148c in the shaft connecting portion 134 is released, the shaft connecting portion 134 can be held by the operator. Therefore, when the operator holds the thumbscrew 202 and the shaft coupling portion 134 and pulls the thumbscrew 202 and the shaft coupling portion 134 toward the front side, the interior case 160 can be pulled and taken out from the exterior case 180. After taking out the interior case 160, the thumbscrew 202 and the fixture 166 are removed to open the interior case 160, and maintenance of the blades 140, 142, the power transmission mechanism 148, and the like can be performed.

  Like the crushing device 124 described above, by making it possible to remove the interior case 160 from the exterior case 180, maintenance such as replacement of the blades 140 and 142 can be performed at a location away from the housing portion 150. Therefore, the maintainability of the dry ice cleaning device 10 can be improved by employing the crushing device 124.

  In the crushing device 124 described above, the outer peripheral surface of the inner case 160 is in close contact with the inner peripheral surface of the outer case 180. Therefore, when the interior case 160 is fitted into the exterior case 180, a gap is hardly formed between them. Therefore, in the crushing device 124, it is difficult to cause problems such as cold air from the dry ice leaking from the storage unit 150 or outside air flowing into the storage unit 150. In the present embodiment, an example is shown in which almost no gap is formed between the interior case 160 and the exterior case 180 in order to suppress the inflow and outflow of outside air and cold air, but the present invention is limited to this. A gap may be formed instead of a thing. In addition, when a clearance gap is formed between both, it is preferable to take a separate measure with respect to the inflow and outflow of outside air and cold air into the housing portion 150.

  Further, the crushing device 124 described above can open the exterior lid portion 184 to expose the front surface 160e of the interior case 160 and attach the traction tool 200 to the mounting portion 204 provided on the front surface 160e. Therefore, by pulling the traction tool 200 and pulling it, the inner case 160 fitted in the outer case 180 without any gap can be easily pulled out. In the present embodiment, the mounting portion 204 is provided, and the traction tool 200 can be attached as necessary. However, the present invention is not limited to this, and the traction tool 200 is internally provided. It may be provided in advance as part of the case 160. Further, in this embodiment, an example in which the traction tool 200 is configured by the butterfly bolt 200 is shown, but the present invention is not limited to this, and is suitable for traction of the interior case 160 such as a conventionally known hook or handle. Any traction tool 200 can be used.

  Further, the crushing device 124 described above uses the screw hole 170 a and the screw insertion hole 164 b exposed by removing the screw forming the fixture 166 as the mounting portion 204. Therefore, in the crushing device 124, there is no need to separately provide a member for mounting the traction tool 200. Thereby, the structure of the crushing apparatus 124 can be simplified. In the present embodiment, the example in which the screw hole 170a and the screw insertion hole 164b are used as the mounting portion 204 has been shown, but the present invention is not limited to this, and a member for mounting the traction tool 200 is used. A separate hand is also good.

  Further, in the crushing device 124 described above, by releasing the connection between the power transmission shaft 148 c and the power source 130 at the shaft coupling portion 134, the portion of the power transmission shaft 148 c that protrudes outside the exterior case 180 is removed from the interior case 160. Can be used for towing. In the present embodiment, an example in which the power transmission shaft 148c is used to pull the interior case 160 and take it out from the exterior case 180 has been described, but the present invention is not limited to this.

  Further, the crushing device 124 described above is removed from the outer case 180 by removing the surface on the right side of the main body 12 in a state viewed from the control unit 80 side of the dry ice cleaning device 10 (see FIG. 1). Although 160 can be taken out, the present invention is not limited to this. Specifically, the crushing device 124 has a structure different from the above-described configuration, and the inner case 160 is removed from the outer case 180 by removing the surface on the left side of the main body 12 when viewed from the control unit 80 side. It is good also as what can be taken out. Further, the crushing device 124 is configured so that the inner case 160 can be taken out from the outer case 180 in the front-rear direction of the dry ice cleaning device 10, that is, the direction from the front side to the back side, or the opposite direction. The configuration may be changed.

  The exemplary embodiments of the present invention have been described above, but various design changes can be made within the scope of the technical idea of the present invention described in the claims, and they are all included in the present invention. It is.

  The dry ice cleaning apparatus of the present invention includes aircraft, ships, vehicles, industrial machines, general machines, jigs and molds attached to these machines, buildings necessary for daily life, air conditioning attached thereto, kitchens, etc. It can be suitably used for various purposes such as cleaning equipment, utensils, etc., mold removal, moss removal, grave cleaning and the like. Moreover, since the dry ice cleaning apparatus of the present invention is low in noise and light, it can be used in ordinary homes, condominiums and apartments with two or more floors that do not have an elevator, and house cleaning and pests. It can also be used effectively for extermination.

DESCRIPTION OF SYMBOLS 10 Dry ice cleaning apparatus 20 Supply part 22 Input part 22c Discharge port 22e Inclination part 22f Interior part 22g Heat insulation material 22h Exterior part 22i Heat insulation material 24 Crushing device 30 Blower 40 Compressor 50 Nozzle 54 Introduction chamber 56 Jet outlet 58 First connection port 60 Second connection port 80 Control unit 124 Crushing device 130 Power source 140, 142 Blade 148c Power transmission shaft 150 Housing unit 160 Interior case 160e Front 162 Interior housing unit 164 Interior lid unit 166 Fixing tool 180 Exterior case 182 Exterior housing unit 184 Exterior Lid 184c Hole (shaft holder)
190 Groove (shaft holder)
200 traction tool 204 mounting part

Claims (11)

A supply unit for supplying dry ice;
A nozzle for spraying dry ice;
A blower for supplying dry ice to the nozzle by blowing;
A compressor for supplying compressed gas,
The nozzle is
An introduction room where dry ice is introduced;
A spout for ejecting dry ice from the introduction chamber;
A first connection port piped to the blower;
A second connection port piped to the compressor;
While supplying the compressed gas to the introduction chamber through the second connection port, the dry chamber introduced into the introduction chamber through the first connection port is made to be in a vacuum state or a low pressure state. Dry ice cleaning equipment characterized by being able to be ejected from a spout A supply unit for supplying dry ice;
A nozzle for spraying dry ice;
A compressor for supplying compressed gas;
A blower for supplying dry ice from the supply unit by blowing air to the nozzle;
A dry ice cleaning apparatus, wherein the nozzle exhibits an ejector effect by supplying a compressed gas by the compressor, and can take in and inject dry ice supplied by the blower.   The dry ice cleaning apparatus according to claim 1, wherein the supply unit includes a shearing type crushing device that crushes dry ice while shearing. The crushing device is
A blade that crushes dry ice while shearing;
A housing portion for housing the blade,
The accommodating portion is
An outer case fixed in the supply unit;
An inner case that is arranged inside the outer case and houses the blade;
The dry ice cleaning apparatus according to claim 3, wherein the interior case can be taken in and out of the exterior case. The outer case is
An exterior housing for housing the interior case;
An exterior lid for closing the exterior housing,
The outer peripheral surface of the inner case is in close contact with the inner peripheral surface of the outer case,
The interior case has a mounting portion in a portion exposed by opening the exterior lid portion,
The dry ice cleaning apparatus according to claim 4, wherein a traction tool for pulling the inner case in a predetermined pulling direction and pulling the inner case from the outer case can be mounted on the mounting portion. The interior case is
An interior housing for housing the blade;
An interior lid for closing the interior housing;
A fixture for fixing the interior housing portion and the interior lid portion;
The dry ice cleaning apparatus according to claim 5, wherein a mounting portion for mounting the traction tool is formed by removing the fixing tool. The crushing device is
A power transmission shaft for transmitting power to the blade;
A power source coupled to the power transmission shaft,
The power transmission shaft protrudes from the interior case;
The outer case is provided with a shaft holding portion for holding the power transmission shaft so as to be slidable in the pulling direction,
The dry ice cleaning apparatus according to any one of claims 4 to 6, wherein the connection between the power transmission shaft and the power source can be released outside the outer case. The supply unit is
An input section capable of supplying dry ice;
A discharge port provided at the bottom of the input part,
5. The dry ice cleaning apparatus according to claim 1, further comprising an inclined portion formed on the bottom side of the charging portion so as to have a downward slope toward the discharge port. The supply unit has an input unit capable of supplying dry ice,
The dry ice cleaning apparatus according to claim 1, wherein a side surface of the charging portion has a multiple structure.   The dry ice cleaning apparatus according to claim 1, further comprising a control unit capable of arbitrarily adjusting an output of the blower. A small output mode for operating the blower with the compressor stopped;
The dry ice can be ejected by an operation mode selected from a plurality of operation modes including a high output mode for operating both the compressor and the blower. Dry ice cleaning equipment.

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