JP2606405Y2 - Auger ice machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auger-type ice maker having a refrigerating casing having a cooling pipe wound around an outer peripheral surface thereof.

[0002]

2. Description of the Related Art FIG. 4 is a sectional view of an auger type ice making machine (Japanese Utility Model Application No. 2-51249) which has already been filed by the present applicant. A cooling pipe 3 through which a refrigerant flows is wound around the surface. The cooling pipe 3 communicates with a condenser and a compressor (not shown) and forms a refrigeration circuit with them. The heat insulating material 4 made of, for example, urethane foam, surrounding the cooling pipe 3 has a cylindrical shape, and the lower diameter reduced portion 4 a surrounds the lower end of the freezing casing 2. The drive motor 5 supported by the base 11 communicates with the auger 6 via a power transmission system in the base 11 including a shaft, gears, and the like. The housing 13 fixed to the base 11 extends into the lower end of the freezing casing 2 and is fixed by bolts 15. A water supply pipe 17 extends outside through the reduced diameter portion 4a of the heat insulating material 4 so that water is supplied into the freezing casing 2 from a water supply tank (not shown). Due to the evaporating effect of the refrigerant flowing through the cooling pipe 3, the temperature of the freezing casing 2 and the temperature of the water therein decreases,
Ice grows on the inner surface of the freezing casing 2. That is, the portion of the refrigerating casing 2 surrounded by the cooling pipe 3 becomes a frozen part.

In the upper end of the freezing casing 2, a pressing head 7 is provided.
Is provided and fixed firmly by fixing bolts 8 penetrating the freezing casing 2. A discharge cylinder 21 that is opened in the lateral direction is attached to a flange 19 that is fastened to the bolt 8, and a known rotary blade 6 a is attached to the tip of the auger 6 that extends upward through the pressing head 7. Is installed. The rotary blade 6a faces the exit of the pressing head 7 from the ice compression passage (not shown). The ice on the inner surface of the freezing casing 2 is scraped off by the screw blade 6b of the auger 6 and sent upward. This ice is compressed and hardened in the ice compression passage of the pressing head 7, and when it comes out of its outlet, it is cut or cut to an appropriate length by the rotary blade 6a. This ice is sent laterally through a discharge cylinder 21 and is normally discharged into an ice storage (not shown).

In this example, an elastic packing 10 is interposed between the lower end of the heat insulating material 4 and the freezing casing 2 in addition to the elastic packing 9 between the upper end of the heat insulating material 4 and the freezing casing 2. However, it is not always necessary to attach elastic packings to both sides. The elastic packings 9 and 10 are made of butyl rubber, and the heat insulating material 4 is made of urethane foam. Therefore, the dew water generated at the upper end of the freezing casing 2 outside the pressing head 7 flows along the tapered surface 9a of the heat insulating material 4 without entering the gap. Since the elastic packing 10 is also provided at the lower end, water does not flow upward and reach the cooling pipe 3 due to the capillarity of the gap that would otherwise occur.

[0005]

In the case of an auger type ice making machine submitted by the present applicant, the elastic packings 9 and 10 prevent dew condensation water from entering through a gap between the heat insulating material 4 and the cooling pipe 3. You. Thus, although the cooling pipe 3 is connected to the freezing casing 2 by soldering, it is difficult to connect the spiral cooling pipe 3 to the freezing casing 2 without forming a gap, or the pin is hardly pinned. There is a hall.
Therefore, when the temperature difference of the freezing casing 2 between the ice making operation and the stop is as high as 40 to 50 ° C., the external moisture is removed from the surface of the heat insulating material 4 by the respiration by air in the gap and the pinhole. Part and pinholes (hygroscopic action), and while this water repeatedly freezes and melts in the ice making operation and the deicing operation, cracks are generated starting from the voids and pinholes, and the cooling pipe 3 is deformed. However, there is a problem that there is a risk of damage. The present invention has been made to solve such a problem, and an object of the invention is to provide an auger type ice making machine in which a cooling pipe is not deformed or damaged due to a respiratory action and a moisture absorbing action.

[0006]

According to a first aspect of the present invention, there is provided an auger-type ice making machine which forms a coating film on a cooling pipe, and fixes a void formed by fixing solder and a pinhole of the solder. Filled with a coating film. The auger-type ice maker according to claim 2 of the present invention is obtained by coloring a coating film.

[0007]

In this invention, since the coating film is formed on the cooling pipe, the voids and the pinholes of the solder generated by the soldering are filled with the paint, and the entire surface of the cooling pipe is covered with the coating film.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional view showing an embodiment of the present invention, and FIG.
FIG. 3 is a partial view of FIG. 1 viewed from another angle, and FIG. 3 is a view of FIG. 2 with the heat insulating material removed, and the same or corresponding parts as in FIG. I do. In the figure, 30 is a drain pipe formed at the lower part of the freezing casing 2, 31 is formed by coating the entire surface of the cooling pipe 3 and the lower and upper parts of the freezing casing 2 with a colored paint having excellent water resistance and adhesion. It is a coating film.

In the auger-type ice making machine having the above-described structure, during the ice making operation, the refrigerant enters through the inlet 3a of the cooling pipe 3, evaporates inside the cooling pipe 3, and cools the freezing casing 2 (-10 ° C. to -15 ° C.). As a result, ice is formed on the inner wall surface of the freezing casing 2. The grown ice is peeled off by the rotary blade 6a of the auger 6, compressed and dehydrated by the pressing head 7, and the flake ice pieces are discharged to the ice storage (not shown) via the discharge cylinder 21. When the ice storage is full, the ice making operation is stopped in response to a signal from an ice storage switch (not shown), and the ice making operation is restarted when the ice in the ice storage is used. By the way, in the above-mentioned auger type ice making machine, the temperature difference of the refrigeration casing 2 between the time of operation and the time of shutdown is 40 ° C.
When the temperature reaches 50 ° C., cracks are generated from the voids (between the solder and the cooling pipe 3 and between the solder and the freezing casing 2) and the pinholes of the solder when the voids and the pinholes are present. , Cooling pipe 3
However, in this embodiment, a coating film 31 is formed on the cooling pipe 3 so that voids and solder pinholes generated by soldering are filled with paint. In addition, since the entire surface of the cooling pipe 3 is covered with the coating film 31, the temperature difference causes a respiration action and a moisture absorption action,
Moisture does not enter the vicinity of the cooling pipe 3. In addition, since a colored paint is used, the application can be confirmed with the naked eye on the solder attachment portion of the cooling pipe 3.

[0010]

As described above, according to the auger-type ice making machine according to the first aspect of the present invention, the void formed by soldering and the pinholes of the solder are filled on the cooling pipe so as to be filled with the paint. Since the coating film is formed on the cooling pipe, it is possible to prevent the cooling pipe from being deformed or damaged due to the respiratory action and the moisture absorbing action due to the temperature difference. According to the auger-type ice making machine of the second aspect of the present invention, since the cooling pipe is applied using the coloring paint, in addition to the effect of the first aspect, the uncoated portion of the cooling pipe can be easily visually observed. The determination can be made, and there is also an effect that the paint can be surely applied over the entire surface of the cooling pipe.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing an embodiment of the present invention.

FIG. 2 is a partial view of the auger ice maker of FIG. 1 viewed from another angle.

FIG. 3 is a view when the heat insulating material of FIG. 2 is removed.

FIG. 4 is a partial cross-sectional view of a conventional auger type ice making machine.

[Explanation of symbols]

2. Freezing casing, 3. Cooling pipe, 4. Insulation material, 31.

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Noboru Watanabe 3-16 Hoshizaki Electric Co., Ltd., Sakaemachi South Building, Toyoake City, Aichi Prefecture (56) References JP-A 64-10072 (JP, A) -11369 (JP, U) JP-B 63-23466 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25C 1/14 301

Claims (2)

(57) [Scope of request for utility model registration] 1. A cooling pipe is fixed on the outer peripheral surface using solder.
A freezing casing that is fixed, an auger rotatably provided in the freezing casing, and a heat insulating material that is attached tightly to the outer peripheral surface of the freezing casing so as to cover the frozen part where the cooling pipe is located. in the auger type ice making machine, coating is formed on the cooling pipe, the solder
Solder, cooling pipe and solder generated by fixing
Then, the gap between the freezing casing, and the
An auger-type ice maker, wherein a pinhole is filled with the coating . 2. The auger ice maker according to claim 1, wherein the coating is colored.