JP2020133920A - Icemaker - Google Patents

Abstract

To provide an icemaker capable of surely preventing clogging of ices at a discharge port of a lid member, and capable of reducing a failure risk, a manufacturing cost and a running cost.SOLUTION: An icemaker 1 is configured such that a rotor 7 provided with a scraping blade 72 is rotatably installed in an inner cylinder 2, a liquid material pumped from the lower side of the inner cylinder 2 is flowed into the inner cylinder 2, the liquid material is cooled with a refrigerant R flowing between the inner cylinder 2 and an outer cylinder 4 to attach ices to an inner peripheral surface 21 of the inner cylinder 2, and sherbet ice generated by scraping off the attached ices by the scraping blade 72 is discharged from a discharge port 112 of a lid member 11 arranged on the upper side of the inner cylinder 2, wherein an opening 104 is provided in an upper bearing part 10 of a rotational shaft 73 of the rotor 7, the lid member 11 is formed in an upwardly convex shape, and the discharge port 112 is provided at the top of the lid member 11.SELECTED DRAWING: Figure 2

Description

The present invention relates to an ice making device for producing sherbet ice.

Conventionally, sherbet ice having fine ice particles and melting in a short time has been used in order to maintain the freshness of fish and prevent damage to the surface of fish. Sherbet ice is produced by an ice making device as described in Patent Documents 1 to 3.

In the ice making devices of Patent Documents 1 to 3, a scraping blade is provided on the rotating body so as to project outward, and the rotating body is rotatably installed in the inner cylinder in the same axial direction, and the inner cylinder and the outer cylinder are rotatable. A refrigerant is circulated between the cylinder and the cylinder, and the salt water supplied to the inside of the inner cylinder is cooled by the refrigerant to generate ice on the inner peripheral surface of the inner cylinder, and a rotating body that rotates this ice. Sherbet ice is manufactured by scraping with the scraping blade of.

Japanese Patent No. 4638393 Japanese Unexamined Patent Publication No. 2010-223479 JP-A-2010-223480

By the way, in an ice making device for producing sherbet ice, when the sherbet ice produced in the inner cylinder is discharged from the outlet of the lid material, ice lumps are formed around the outlet of the lid material due to heat conduction between the lid material and the refrigerant. There is a problem that ice clogging occurs at the discharge port and it becomes difficult to smoothly discharge sherbet ice. Patent Document 1 uses a structure in which a flat plate-shaped lid material is formed of a heat-insulating synthetic resin and a structure in which the lid material is heated by a heating means in order to prevent the occurrence of freezing lumps.

The flat plate-shaped lid material made of this heat-insulating synthetic resin can prevent the occurrence of ice lumps to some extent due to the decrease in thermal conductivity, but it is a material that surely prevents the occurrence of ice clogging at the discharge port. It's still not enough. Further, when the lid material is heated by the heating means, it is necessary to install the heating means separately, and the addition of the heating means complicates the device structure, increases the risk of failure, and the manufacturing cost and the running cost due to the operation. Will increase. Therefore, there is a demand for an ice making device that can surely prevent the occurrence of ice clogging at the discharge port of the lid material, has a low risk of failure, and can reduce the manufacturing cost and the running cost.

The present invention has been proposed in view of the above problems, and provides an ice making device capable of reliably preventing the occurrence of ice clogging at the outlet of the lid material, reducing the risk of failure, and reducing the manufacturing cost and running cost. The purpose is to provide.

In the ice making apparatus of the present invention, a rotating body provided with a scraping blade is rotatably built in the inner cylinder, and a liquid material pumped from the lower side of the inner cylinder is made to flow into the inner cylinder. The liquid material is cooled by the refrigerant flowing between the cylinder and the outer cylinder to attach ice to the inner peripheral surface of the inner cylinder, and the sherbet ice produced by scraping the attached ice with the scraping blade is removed. An ice making device that discharges ice from a lid material discharge port arranged on the upper side of the inner cylinder, and has an opening in the upper bearing portion of the rotating shaft of the rotating body, and the lid material is convex upward. It is characterized in that it is formed in a shape and the discharge port is provided on the top of the lid material.
According to this, it is difficult for ice lumps to adhere to the top of the lid material that is recessed downward and its surroundings, and the ice lumps that have adhered are also easy to fall off, ensuring that ice clogging occurs at the discharge port on the top of the lid material. Can be prevented. Then, the sherbet ice can be smoothly transferred upward from the opening to the upper bearing portion on the top of the lid material, and the sherbet ice can be smoothly discharged from the discharge port on the top of the lid material. Further, since a means for complicating the device structure such as a heating means is not required, the risk of failure can be reduced, and the manufacturing cost and running cost can be reduced.

The ice making device of the present invention is characterized in that the lid material is formed in an upwardly convex dome shape.
According to this, by forming the lid material in an upwardly convex dome shape, the strength and impact resistance of the lid material can be increased. For example, when the ice making device is used on a ship with unstable scaffolding, etc. Can also prevent damage.

In the ice making device of the present invention, the upper bearing portion extends radially to a center portion that pivotally supports the rotation shaft, an outer peripheral annular portion that is attached near the upper end of the inner cylinder, and the center portion and the outer peripheral annular portion. It is characterized in that it is composed of a spoke portion for connecting the spoke portions, and the opening is provided between the spoke portions.
According to this, the opening of the upper bearing portion through which sherbet ice flows can be increased and the inner cylinder can be arranged in a well-balanced manner in the circumferential direction. Therefore, the sherbet ice can be smoothly transferred upward in a well-balanced manner in the entire circumferential direction of the inner cylinder, and the sherbet ice can be transferred and discharged more smoothly.

The ice making device of the present invention is characterized in that the lid material is formed of metal and a discharge pipe communicating with the discharge port is integrally formed with the lid material.
According to this, by making the lid material made of metal, the strength of the lid material can be improved, and waste plastic etc. due to the synthetic resin lid material when the equipment is discarded in the future can be reduced to protect the environment. Can contribute. In addition, by providing the discharge pipe on the lid material, the connection pipe or connection tube through which sherbet ice flows downstream can be connected to the discharge pipe to improve the convenience of connection, the distribution and supply of sherbet ice. it can.

In the ice making device of the present invention, the rotating body is formed in a cylindrical shape, the scraping blade is spirally provided along the outer peripheral surface of the rotating body, and the gap between the inner cylinder and the rotating body is provided. It is characterized in that the liquid material flows into the body.
According to this, by allowing the liquid material to be pressure-supplied to flow into the gap between the inner cylinder and the rotating body, the liquid material and sherbet ice can be transferred upward more smoothly, and the spiral scratching can be performed. The blade allows the sherbet ice to move spirally and move upwards. Therefore, sherbet ice can be transferred and discharged more smoothly.

The ice making device of the present invention is characterized in that the cutting edge of the spiral scraping blade is provided on the inner peripheral surface of the inner cylinder in a non-contact manner.
According to this, by making the cutting edge of the spiral scraping blade non-contact with the inner peripheral surface of the inner cylinder, deterioration due to wear of the scraping blade is suppressed, and the durability of the scraping blade and the ice making device is improved. , The life can be extended. Further, by making the cutting edge of the spiral scraping blade non-contact, the rotating body and the scraping blade can be rotated more smoothly, and the spiral movement of the sherbet ice can be performed more smoothly. it can.

The ice making device of the present invention is characterized in that the outside of the outer cylinder is covered with a heat insulating portion, and at least the periphery of the top of the lid material is exposed from the heat insulating portion.
According to this, by covering the outside of the outer cylinder with a heat insulating portion, it is possible to produce the necessary sherbet ice with more energy saving. In addition, by exposing the area around the top of the lid material from the heat insulating part, it is possible to prevent freezing lumps from adhering to the area around the top of the lid material, and while saving energy, ice clogging occurs at the discharge port on the top of the lid material. Can be reliably prevented from doing so.

According to the ice making apparatus of the present invention, it is possible to surely prevent the occurrence of ice clogging at the discharge port of the lid material, reduce the risk of failure, and reduce the manufacturing cost and running cost.

The perspective view of the ice making apparatus of embodiment according to this invention. The vertical sectional view of the ice making apparatus of an embodiment. Longitudinal sectional view of the ice making device of the embodiment in another direction The cross-sectional view of the ice making apparatus of an embodiment. The perspective view of the state which removed the lid material from the ice making apparatus of an embodiment. The perspective view of the rotating body in the ice making apparatus of embodiment. The cross-sectional explanatory view explaining the flow of the liquid material in the ice making apparatus of embodiment.

[Ice making device of the embodiment]
As shown in FIGS. 1 to 5, the ice making device 1 of the embodiment according to the present invention includes an inner cylinder 2, an outer cylinder 3 which is separated from the inner cylinder 2 and is exteriorized by the inner cylinder 2, and an outer cylinder 3. A heat insulating cylinder 4 is provided to form a heat insulating portion that is separated from the outside of the outer cylinder 3 and is exteriorized by the outer cylinder 3. An annular lower support 5 is provided on the lower side of the inner cylinder 2, and the lower end of the inner cylinder 2 and the lower end of the outer cylinder 3 are fixed to the lower support 5. The lower end of the heat insulating cylinder 4 is fixed to the outer peripheral surface of the outer cylinder 3 in the vicinity of the lower end of the outer cylinder 3. An annular upper support 6 is fitted onto the upper end of the inner cylinder 2, and the upper end of the inner cylinder 2 is fixed to the upper support 6. The upper end of the outer cylinder 3 and the upper end of the heat insulating cylinder 4 are fitted to the lower surface of the upper support 6, respectively. The space between the outer cylinder 3 and the heat insulating cylinder 4 is a decompressed vacuum heat insulating space S1, and the heat insulating cylinder 4 and the vacuum heat insulating space S1 form a heat insulating portion that covers the outside of the outer cylinder 3.

The lower support 5 is provided with a refrigerant inflow path 51 communicating with the distribution space S2 between the inner cylinder 2 and the outer cylinder 3, and the upper support 6 is provided with the inner cylinder 2 and the outer cylinder 3. A refrigerant outflow passage 61 communicating with the flow space S2 between the two is provided, and the refrigerant R flowing in from the refrigerant inflow passage 51 circulates in the distribution space S2 between the inner cylinder 2 and the outer cylinder 3, and the refrigerant outflow passage It is designed to flow out from 61. The distribution of the refrigerant R is continuously performed during the production of sherbet ice.

A rotating body 7 is rotatably built in the inner cylinder 2. The rotating body 7 is formed in a cylindrical shape, and is housed in the inner cylinder 2 so that the outer peripheral surface 71 of the rotating body 7 is not in contact with the inner peripheral surface 21 of the inner cylinder 2. The distance between the outer peripheral surface 71 of the rotating body 7 and the inner peripheral surface 21 of the inner cylinder 2 is, for example, about 2 to 3 mm. As shown in FIG. 6, a scraping blade 72 is provided on the outer peripheral surface 71 of the rotating body 7. The scraping blade 72 is formed in a spiral shape along the outer peripheral surface 71 of the rotating body 7 and extending in the axial direction of the rotating body 7. The scraping blade 72 has a cross-sectional shape composed of a tapered surface 721 formed so as to gradually expand outward and a substantially horizontal upper surface 722, and scrapes sherbet ice upward. It has a shape that makes it easy to transfer. The cutting edge of the spiral scraping blade 72 is provided in non-contact with the inner peripheral surface 21 of the inner cylinder 2, and the distance between the cutting edge of the scraping blade 72 and the inner peripheral surface 21 of the inner cylinder 2 is, for example, 0.3 to. It is about 0.5 mm or the like.

At the center of the rotating body 7, a rotating shaft 73 extending in the axial direction of the rotating body 7 is fixed. The portion of the rotating shaft 73 protruding below the rotating body 7 is pivotally supported by the lower bearing portion 8 built in the lower support 5, and further below the lower support 5 of the rotating shaft 73. The portion protruding to the side is attached to a drive mechanism 9 that rotates the rotary shaft 73, and the rotary shaft 73 and the rotating body 7 are rotated by the drive control of the drive mechanism 9.

A portion of the rotating shaft 73 protruding above the rotating body 7 is pivotally supported by an upper bearing portion 10. As shown in FIG. 5, the upper bearing portion 10 has a center portion 101 that pivotally supports the rotating shaft 73, an outer peripheral annular portion 102 that is attached near the upper end of the inner cylinder 2, and a center portion 101 and an outer peripheral annular portion that extend radially. It is composed of a spoke portion 103 connecting the portions 102, and an opening 104 provided in the upper bearing portion 10 is provided between the spoke portions 103 and 103. The outer peripheral annular portion 102 in the present embodiment is arranged and fixed so as to fit into the fitting step 62 of the upper support 6.

A lid member 11 is arranged on the upper side of the inner cylinder 2. The lid material 11 is formed in an upwardly convex shape, and in the present embodiment, is formed in an upwardly convex dome shape or hemispherical shape. A flange 111 projecting outward is provided at the lower end of the lid material 11, and the flange 111 is provided so as to be placed on the upper surface of the upper support 6, and the flange 111 is fixed to the upper support 6 by welding or the like. There is. The outer peripheral annular portion 102 of the upper bearing portion 10 is provided so as to be sandwiched between the fitting step 62 and the flange 111. Further, a ring-shaped sealing material 12 for preventing the sherbet ice from flowing out to the outside is provided between the upper surface of the upper support 6 and the flange 111 at a position outside the fitting step 62.

A sherbet ice discharge port 112 is provided on the top of the lid material 11 so that sherbet ice is discharged from the discharge port 112. Further, the lid material 11 in the present embodiment is made of metal, and the discharge pipe 113 communicating with the discharge port 112 is integrally formed, and the discharge pipe 113 protruding outward or upward from the dome shape is formed on the lid material 11. It is integrally formed. In addition to the configuration in which the heat insulating portion in the present invention is provided only on the outside of the outer cylinder 3, it is also possible to provide the heat insulating portion up to the upper side of the outer cylinder 3, but freezing to the top of the lid material 11 and its periphery. In order to more reliably prevent or suppress the adhesion of lumps, it is preferable to expose at least the periphery of the top of the lid material 11 from the heat insulating portion.

The intercalated disc 13 located between the lower support 5 and the rotating body 7 at a position outside the lower support 5 and the rotating shaft 73 is a liquid material such as salt water or fresh water that is a source of sherbet ice. The material inflow passages 52 and 131 are provided so as to communicate with each other. The liquid material flowing through the liquid material inflow passages 52 and 131 flows into the gap between the inner cylinder 2 and the rotating body 7, and mainly the inner peripheral surface 21 of the inner cylinder 2 and the outer peripheral surface 71 of the rotating body 7. The liquid material flows into the gap between the two.

When making sherbet ice with the ice making device 1 of the present embodiment, the rotating body 7 is rotated and the refrigerant R is circulated in the flow space S2 between the inner cylinder 2 and the outer cylinder 3 on the lower side. A liquid material such as salt water or fresh water is pressure-supplied to the liquid material inflow passage 52 of the support 5, and the liquid material pumped from the lower side of the inner cylinder 2 is made to flow into the inner cylinder 2. The liquid material supplied under pressure flows between the lower surface of the rotating body 7 and the intercalated disc 13 through the liquid material inflow passages 52 and 131, and the inner peripheral surface 21 of the inner cylinder 2 and the outer peripheral surface 71 of the rotating body 7 It flows into the gap between the and (see the thick arrow in FIG. 7).

The liquid material that has flowed into the gap between the inner peripheral surface 21 of the inner cylinder 2 and the outer peripheral surface 71 of the rotating body 7 is cooled by the refrigerant R flowing through the distribution space S2, and a part of the liquid material becomes ice and becomes the inner cylinder. It adheres to the inner peripheral surface 21 of 2. The generated and attached ice is scraped off by the scraping blade 72 of the rotating body 7, and does not become ice due to the flow of the liquid material pumped upward and the transfer by the spiral scraping blade 72 that performs spiral motion. It is transferred upward as sherbet ice or slurry ice together with the liquid material (see the thick line arrow in FIG. 7). The generated sherbet ice is discharged to the outside of the ice making device 1 from the discharge port 112 and the discharge pipe 113 of the lid member 11 which is convex upward and has a dome shape.

According to the ice making device 1 of the present embodiment, it is difficult for ice lumps to adhere to the top of the downward concave lid material 11 and its surroundings, and the adhered ice lumps are easily dropped, and the discharge port 112 on the top of the lid material 11 It is possible to surely prevent the occurrence of ice clogging. Then, the sherbet ice can be smoothly transferred upward from the opening 104 to the upper bearing portion 10 to the top of the lid material 11, and the sherbet ice can be smoothly discharged from the discharge port 112 at the top of the lid material 11. Further, since a means for complicating the device structure such as a heating means is not required, the risk of failure can be reduced, and the manufacturing cost and the running cost can be reduced. Further, by forming the lid material 11 in an upwardly convex dome shape, the strength and impact resistance of the lid material 11 can be increased, and even when the ice making device is used on a ship with unstable scaffolding, for example. Damage can be prevented.

Further, by providing an opening 104 through which sherbet ice flows between the spokes 103 and 103 of the upper bearing portion 10, the opening 104 of the upper bearing portion 10 through which sherbet ice flows is enlarged and in the circumferential direction of the inner cylinder 2. It can be arranged in a well-balanced manner. Therefore, the sherbet ice can be smoothly transferred upward in a well-balanced manner in the entire circumferential direction of the inner cylinder 2, and the sherbet ice can be transferred and discharged more smoothly.

Further, by making the lid material 11 made of metal, the strength of the lid material 11 can be improved, and waste plastics and the like due to the synthetic resin lid material when the equipment is discarded in the future can be reduced, which contributes to environmental protection. be able to. Further, by providing the discharge pipe 113 on the lid material 11, a connection pipe or a connection tube through which sherbet ice flows further downstream can be connected to the discharge pipe 113 to improve the convenience of connection, the distribution and supply of sherbet ice. Can be enhanced.

Further, by allowing the liquid material to be pressure-supplied to flow into the gap between the inner cylinder 2 and the cylindrical rotating body 7, the liquid material and sherbet ice can be transferred upward more smoothly and spirally. The sherbet ice can be spirally moved and transferred upward by the scraping blade 72 of the above. Therefore, sherbet ice can be transferred and discharged more smoothly.

Further, by making the cutting edge of the spiral scraping blade 72 non-contact with the inner peripheral surface 21 of the inner cylinder 2, deterioration due to wear of the scraping blade 72 is suppressed, and the durability of the scraping blade 72 and the ice making device 1 is suppressed. It is possible to improve the property and extend the life. Further, the rotating body 7 and the scraping blade 72 can be rotated more smoothly, and the sherbet ice can be moved in a spiral shape more smoothly.

Further, by covering the outside of the outer cylinder 3 with a heat insulating portion, it is possible to produce the necessary sherbet ice with more energy saving. Further, by exposing the periphery of the top of the lid material 11 from the heat insulating portion, it is possible to prevent the freezing lumps from adhering to the periphery of the top of the lid material 11, and while saving energy, ice is provided at the discharge port on the top of the lid material 11. It is possible to surely prevent the occurrence of clogging.

[Scope of inclusion of the invention disclosed in the present specification]
In addition to the inventions, embodiments and modifications thereof listed as inventions, the inventions disclosed in the present specification are, to the extent applicable, modified from these partial contents to other contents disclosed in the present specification. What is specified, or what is specified by adding other contents disclosed in the present specification to these contents, or those partial contents are deleted to the extent that a partial action and effect can be obtained to make it a higher concept. Include what you have identified. The invention disclosed in the present specification also includes the following modifications and additional contents.

For example, the lid material having an upwardly convex shape in the present invention is preferably formed in an upwardly convex dome shape as in the above embodiment, but it can also be formed in another shape such as a head cone. is there. Further, the lid material in the present invention is not limited to the one made of metal, but also includes the one made of other materials such as synthetic resin. Further, the lid material in the present invention is not limited to the one in which the discharge pipe communicating with the discharge port is integrally formed, the lid material has only the discharge port, and another discharge pipe is welded and bolted to this discharge port. It also includes a configuration in which they are fixed and communicated with each other. Further, the configuration of the heat insulating portion in the present invention is appropriate within the scope of the gist of the present invention, and includes, for example, a configuration in which a heat insulating material is provided so as to wind around the outer circumference of the outer cylinder.

The present invention can be used as an ice making device for sherbet ice.

1 ... Ice making device 2 ... Inner cylinder 21 ... Inner peripheral surface 3 ... Outer cylinder 4 ... Insulation cylinder 5 ... Lower support 51 ... Refrigerant inflow path 52 ... Liquid material inflow path 6 ... Upper support 61 ... Refrigerant outflow path 62 ... Fitting step 7 ... Rotating body 71 ... Outer surface 72 ... Scraping blade 721 ... Tapered surface 722 ... Top 73 ... Rotating shaft 8 ... Lower bearing 9 ... Drive mechanism 10 ... Upper bearing 101 ... Center 102 ... Outer ring Part 103 ... Spoke part 104 ... Opening 11 ... Lid material 111 ... Flange 112 ... Discharge port 113 ... Discharge pipe 12 ... Sealing material 13 ... Intervening plate 131 ... Liquid material inflow path S1 ... Vacuum insulation space S2 ... Flow space R ... Refrigerant

Claims (7)

A rotating body with a scraping blade is rotatably installed in the inner cylinder.
A liquid material pumped from the lower side of the inner cylinder is allowed to flow into the inner cylinder.
The liquid material is cooled by the refrigerant flowing between the inner cylinder and the outer cylinder, and ice is attached to the inner peripheral surface of the inner cylinder.
An ice making device that discharges sherbet ice generated by scraping the attached ice with the scraping blade from a discharge port of a lid material arranged on the upper side of the inner cylinder.
An opening is provided in the upper bearing portion of the rotating shaft of the rotating body, and the rotating body is provided with an opening.
An ice making apparatus characterized in that the lid material is formed in an upwardly convex shape and the discharge port is provided on the top of the lid material. The ice making device according to claim 1, wherein the lid material is formed in an upwardly convex dome shape. The upper bearing portion comprises a center portion that pivotally supports the rotating shaft, an outer peripheral annular portion that is attached near the upper end of the inner cylinder, and a spoke portion that extends radially to connect the center portion and the outer peripheral annular portion. Configured
The ice making device according to claim 1 or 2, wherein the openings are provided between the spoke portions. The ice making device according to any one of claims 1 to 3, wherein the lid material is made of metal, and a discharge pipe communicating with the discharge port is integrally formed with the lid material. The rotating body is formed in a cylindrical shape, and the scraping blade is spirally provided along the outer peripheral surface of the rotating body.
The ice making apparatus according to any one of claims 1 to 4, wherein the liquid material flows into a gap between the inner cylinder and the rotating body. The ice making device according to claim 5, wherein the cutting edge of the spiral scraping blade is provided on the inner peripheral surface of the inner cylinder in a non-contact manner. The outside of the outer cylinder is covered with a heat insulating part, and
The ice making device according to any one of claims 1 to 6, wherein at least the periphery of the top of the lid material is exposed from the heat insulating portion.

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