JPH11304321A - Refrigerating casing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To block infiltration of outside air into a fixed part wound with a copper pipe. SOLUTION: In a refrigerating casing 10 wherein a copper pipe 12 is spirally wound on the outer circumference of a cylindrical casing body 11 except for both end parts of the copper pipe 12 and fixed, then, an insulation hose 14 is fitted covering into both end parts of the copper pipe 12 and a part 14a of the insulation hose 14 and the exterior of the fixed part 12a wound with the copper pipe 12 are covered with an insulating foam material 15, the outer circumference of a part excluding both the end parts of the copper pipe 12 is wrapped tight very closely by a resin film 13 with excellent resistance to water and heat before the foaming of the heat insulating foam material 15 to cover and the outside of the resin film 13 is covered with the heat insulating foam material 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a refrigeration casing,
For example, the present invention relates to a refrigeration casing (cylindrical heat exchanger) that can be used in a refrigeration system of an auger ice machine.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a refrigeration casing used for a refrigeration system of an auger type ice maker has a copper pipe 2 spirally formed around an outer periphery of a cylindrical casing body 1 except for both ends. After wrapping and fixing (the wrapped part is generally brazed and fixed with solder or the like), the copper pipe 2
The insulation hose 3 is fitted and covered at both ends of the insulation hose 3 and then a part 3a of the insulation hose 3 and the outside of the fixed portion 2a around which the copper pipe 2 is wound are heat-insulated foam material 4
(For example, urethane foam). The covering with the heat insulating foam 4 is performed by setting the casing main body 1 in a state where the copper pipe 2 is wound and fixed and the insulation hose 3 is fitted to the copper pipe 2 in a predetermined mold (not shown), and then the same mold is used. It is performed by injecting a heat insulating foam material 4 into the inside and foaming it.

[0003] Further, the freezing casing is, for example, a real hokkaido 5
As is well known in Japanese Patent Publication No.
An auger (not shown) that is rotationally driven by a driving device (not shown) is mounted therein, and a pressing head, a cutter, an ice discharge path, etc. (not shown) are mounted on the upper end of the casing body 1. A watertight mechanical seal (not shown) is attached between the lower part of the auger and an ice making water supply path (not shown) is attached to the lower water supply port 1a of the casing body 1, and the refrigerant is circulated and supplied to the copper pipe 2. By connecting a refrigeration circuit (not shown), the refrigeration circuit is incorporated in an auger type ice machine and used.

[0004]

In the above-mentioned conventional refrigeration casing, the insulation hose 3 is fitted to a position where it comes into contact with the winding fixing portion 2a of the copper pipe 2 as shown in FIG. , A part 3a of the insulation hose 3 and a fixed part 2 wound around the copper pipe 2
The outside of a may be covered with the heat insulating foam material 4. In such a case, when the refrigerated casing is used by being incorporated into an auger-type ice maker, the thermal expansion of the casing body 1 is reduced.
The outside air enters through a small gap between the copper pipe 2 and the insulation hose 3 due to the respiratory action caused by the contraction, and condensed water flows around the winding fixing portion 2 a of the copper pipe 2 covered with the heat insulating foam 4. May accumulate, and this water may freeze and crush the winding fixing portion 2a of the copper pipe 2 around the casing body 1.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. After a copper pipe is spirally wound around an outer periphery of a cylindrical casing body except for both ends, and fixed. In a refrigeration casing in which an insulation hose is fitted and covered at both ends of a copper pipe, and a part of the insulation hose and the outside of a wrapping fixed portion of the copper pipe are covered with a heat insulating foam material, foaming of the heat insulating foam material is performed. Before coating, the outer periphery of the portion excluding both ends of the copper pipe is densely wrapped with a resin film excellent in water resistance and heat resistance without gaps, and the outside of the resin film is coated with the heat insulating foam material. There is a feature in doing so.
In this case, it is desirable that the insulation hose is positioned at a set position by the resin film.

[0006]

In the refrigerating casing according to the present invention, the outer periphery of the portion excluding both ends of the copper pipe before the foam coating of the heat insulating foam material is made of a resin film having excellent water resistance and heat resistance without any gaps. Since the plastic film was wrapped so that the outside of the resin film was covered with the heat-insulating foam material, the thermal expansion of the casing body when the frozen casing was used.
Even if outside air enters through a slight gap between the copper pipe and the insulation hose due to the respiratory action caused by the contraction, the outside air is densely wrapped around the outer periphery of the part excluding both ends of the copper pipe without a gap by a resin film. Intrusion of the copper pipe into the winding fixing portion is accurately prevented. Therefore, condensed water does not accumulate around the winding fixing portion of the copper pipe, and it is possible to prevent the winding fixing portion of the copper pipe from being crushed by freezing of the condensed water.

Further, when the insulation hose is positioned at a set position by a resin film in the practice of the present invention, the assemblability of the insulation hose to the copper pipe is improved, and the insulation hose is improved. Mis-assembly of hose (excess or insufficient fitting amount)
Can be prevented, and the insulation hose can reliably exhibit the foam leakage preventing function.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment in which the present invention is embodied in a frozen casing of an auger type ice making machine (in which an auger is rotatably mounted in a known manner),
In the refrigerating casing 10 of this embodiment, after the copper pipe 12 is spirally wound around the outer periphery of the cylindrical casing body 11 except for both ends and brazed and fixed with solder or the like, the copper pipe 12 is removed at both ends. The outer periphery of the predetermined portion is wrapped densely and tightly with a resin film 13 having excellent water resistance and heat resistance (for example, a polyvinylidene chloride film used for food packaging) without any gaps.
An insulation hose 14 having elasticity is fitted to and covered at both ends of the resin hose 2, and thereafter, a resin film 13, a portion 14 a of the insulation hose 14, and a heat insulating foam material 15 ( (For example, urethane foam). In addition, the covering with the heat insulating foam material 15 is performed in the same manner as in the related art, by molding the casing main body 11 with the copper pipe 12 and the like attached thereto in a predetermined mold (not shown).
After that, the heat insulating foam material 15 is injected into the same mold and foamed, and the heat of the reaction at the time of foaming usually raises the heat insulating foam material 15 to about 70 ° C.

Further, as in the conventional example shown in FIG. 2, an auger (not shown) which is driven to rotate by a driving device (not shown) is assembled in the casing body 11 of the refrigerating casing 10 as in the conventional example shown in FIG. A pressing head, cutter, ice discharge path, etc. (not shown) are attached to the upper end of the
A watertight mechanical seal (not shown) is attached between the casing body 11 and the lower part of the auger, and the casing body 1
An ice making water supply path (not shown) is attached to the lower water supply port 11a of the first unit, and a refrigeration circuit (not shown) for circulating a refrigerant is connected to the copper pipe 12, thereby being incorporated in an auger type ice making machine. Is being used.

[0010] By the way, the freezing casing 1 of the present embodiment.
In the case of No. 0, the outer periphery of a predetermined portion except for both ends of the copper pipe 12 before the foam coating of the heat insulating foam material 15 is densely wrapped without gaps with a resin film 13 having excellent water resistance and heat resistance. Since the outside of the casing 13 is covered with the heat insulating foam material 15, when the frozen casing 10 is incorporated in an auger type ice machine and used, a copper pipe is formed by a respiratory action caused by thermal expansion and contraction of the casing body 11. Even if outside air enters through a small gap between the insulation pipe 12 and the insulation hose 14, the outside air is covered by the resin film 13 that closely wraps the outer periphery of a predetermined portion except for both ends of the copper pipe 12 without gap. Intrusion into the winding fixing portion 12a is accurately prevented. Therefore, condensed water does not accumulate around the winding fixing portion 12a of the copper pipe 12, and the winding fixing portion 12a of the copper pipe 12 can be prevented from being crushed by freezing of the condensed water.

In this embodiment, the copper pipe 1
2 is wrapped around the resin film 13 so that the insulation hose 14
Since the position is set at the set position at 3, the assemblability of the insulation hose 14 to the copper pipe 12 is improved, and erroneous assembly of the insulation hose 14 (excess or insufficient fitting amount) is prevented. Therefore, the insulation leak preventing function of the insulation hose 14 can be reliably exhibited.

In the above embodiment, the present invention is applied to a frozen casing of an auger type ice making machine. However, in the present invention, a copper pipe is spirally wound around the outer periphery of a cylindrical casing body except for both ends. Later, various freezing casings (e.g., ice) in which insulation hoses are fitted and covered at both ends of the copper pipe, and a part of the insulation hose and the outside of the wrapping fixed portion of the copper pipe are covered with a heat insulating foam material. The present invention can be similarly applied to a frozen casing of a cream production machine, and is not limited to the above embodiment.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing an embodiment in which the present invention is applied to a freezing casing of an auger type ice making machine.

FIG. 2 is a partially cutaway front view showing a conventional freezing casing of the auger type ice making machine.

[Explanation of symbols]

10 ... frozen casing, 11 ... casing body, 12 ...
Copper pipe, 12a: wrapped fixing part, 13: resin film, 14: insulation hose, 15: heat insulating foam.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhiko Nozu 3-16 Hoshizaki Electric Co., Ltd., Sakaemachi Minamikan, Toyoake-shi, Aichi Prefecture (72) Inventor Masami Shiraki 3-16-16 Sakaemachi Minamikan, Toyoake-shi, Aichi Hoshizaki Electric Co., Ltd. Inside

Claims (2)

[Claims] After a copper pipe is spirally wound around and fixed to the outer periphery of a cylindrical casing body except for both ends, an insulation hose is fitted and covered on both ends of the copper pipe, and a part of the insulation hose is provided. And a refrigeration casing in which the outside of the fixed portion of the copper pipe is fixed with a heat-insulating foam material, the outer periphery of a portion excluding both ends of the copper pipe before foam coating of the heat-insulating foam material is water-resistant.
A refrigeration casing characterized by being wrapped closely with a resin film having excellent heat resistance without gaps, so that the outside of the resin film is covered with the heat insulating foam material. 2. The refrigeration casing according to claim 1, wherein said insulation hose is positioned at a set position by said resin film.