JPS648263B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses the rotation of an auger placed inside the freezing cylinder to scrape off ice that has grown on the inner surface of the freezing cylinder and transport it upward, compressing this scraped ice to form hard ice. To provide a hollow auger for making an auger type ice making machine, which is particularly designed to reduce the weight of a large auger, ensure sufficient strength, and facilitate the manufacture of the auger. An embodiment of the present invention will be described below based on the drawings. Fig. 1 schematically shows an auger-type ice maker, in which 1 is a hollow auger of the present invention disposed inside a refrigeration cylinder 2 around which an evaporation pipe 2A of the refrigeration system is wound; A radial bearing 5 fitted into the inner surface of a bearing housing 4 screwed onto the cylinder 2
The lower rotary shaft 7 is supported by a sliding bearing 9 press-fitted into a support base 8 which is fitted into the opening at the lower end of the freezing cylinder 2 and connected by screws.
A compression housing 10 is fitted and screwed into the bearing housing 4, and a plurality of ice compression passages 11 including the upper inner surface of the freezing cylinder 2 are formed on the outer surface thereof. A passage 4A that is continuous with the ice compression passage 11 is also formed in the bearing housing 4. Further, a nut 12 is tightened on the upper rotating shaft 3 to a position where it abuts the upper ring of the thrust bearing 6, so that the thrust load of the auger 1 is received by the nut 12 and the thrust bearing 6. Further, a cover 13 surrounding the upper rotating shaft 3 and the nut 12 is screwed to the bearing housing 4, and an agitator 14 for releasing ice is connected to the end of the upper rotating shaft 3 that projects upward from the cover 13. As the agitator 14 rotates, ice is ejected from the shooter 15. The end of the lower rotating shaft 7 is connected to the chain coupling 1 inside the casing 16 on which the support stand 8 is placed.
It is connected to the drive output shaft 18 via 7. 1
9 is a water supply pipe that supplies water to the freezing cylinder 2. Furthermore, the hollow auger 1 of the present invention will be explained in detail based on FIGS. 2 and 3. The auger 1 is composed of five parts: a cylindrical body 20 , an upper cap 21 , a lower cap 22 , the upper rotating shaft 3 , and the lower rotating shaft 7 . Thus, spiral teeth 20A are formed on the outer peripheral surface of the cylindrical body portion 20 , and the upper and lower portions are formed into circular openings having a larger diameter than the middle portion, thereby forming an upper stepped portion 20B.
and a lower step portion 20C is formed. Said upper cap 2
1 is formed with a circular opening having a small diameter at the top and a large diameter at the bottom, thereby forming a stepped portion 21A in the middle part. Similarly to the upper cap 21 , the lower cap 22 has a circular opening having a small diameter at the upper part and a large diameter at the lower part, thereby forming a stepped part 22A in the middle part. A fitting portion 3A is formed at the lower part of the upper rotation shaft 3 . The lower rotating shaft 7 has a fitting portion 7A at the upper part.
form. Then, insert the upper cap 21 into the upper rotating shaft 3 and connect the fitting portion 3A of the upper rotating shaft 3 to the upper cap 21.
The upper cap 21 is brought into contact with the stepped portion 21A of the upper cap 21A.
Press fit into the upper and lower openings of the holder and connect the two by welding. Next, the fitting portion 7A of the lower rotary shaft 7 is brought into contact with the stepped portion 22A of the lower cap 22 , and is press-fitted into the upper and lower openings of the lower cap 22 , and the two are connected by welding. Next, upper rotating shaft 3
The upper cap 21 with which the upper cap 21 is connected is brought into contact with the upper step part 20B of the cylindrical body part 20 , and is press-fitted into the upper opening of the body part 20 , and the two are joined together by welding. Then, the lower cap 22 to which the lower rotary shaft 7 is connected is brought into contact with the lower step portion 20C of the cylindrical body 20 , and is press-fitted into the lower opening of the body 20 , and the two are connected by welding. . In the embodiment of the present invention, after welding the cylindrical body part 20 , the upper cap 21 , the lower cap 22 , the upper rotating shaft 3 , and the lower rotating shaft 7 as described above, each rotating shaft 3 and 7 is finished . Spiral teeth 20A are cut on the outer circumferential surface of. As described above, the present invention can provide a lightweight hollow auger, and since the joint part has a stepped part in the thrust direction, it can sufficiently withstand the thrust load generated during ice making, and the welded part has a stepped part in the thrust direction. This has the advantage that the generated shear force can be reduced, the strength is significantly improved, and the groove of the welded part can be made smaller, so that the time required for welding can be significantly shortened. Further, by forming step portions in each component, positioning during assembly is facilitated, and assembly work can be improved. Furthermore, since each rotating shaft is finished and the helical teeth are cut after welding, dimensional accuracy is improved and many other advantages are achieved.

[Brief explanation of drawings]

Figure 1 is an internal configuration diagram of the auger-type ice maker of the present invention, with the auger not cut away, Figure 2 is an internal configuration diagram of the auger taken in cross section, and Figure 3 is an exploded view of the five parts that make up the auger of the present invention. FIG. 1 ...Hollow auger, 3 ...Upper rotating shaft, 3A...Fitting part, 7 ...Lower rotating shaft, 7A...Fitting part, 20 ...Cylindrical body part, 20A...Spiral tooth, 20B...Upper step part, 2
0C...Lower step part, 21 ...Upper cap, 21A...Step part, 22 ...Lower cap, 22A...Step part.

Claims (1)

[Claims] 1. In an auger-type ice maker, the ice that has grown on the inner surface of the freezing cylinder is scraped off and transferred upwards by the rotation of the auger placed inside the freezing cylinder, and the shaved ice is compressed to produce hard ice. The cylindrical body has a spiral tooth formed therein, and the upper and lower parts are circular openings with a larger diameter than the middle part to form an upper step part and a lower step part, and the upper part has a smaller diameter so as to form a step part in the middle part. The cap consists of an upper cap and a lower cap each having a circular opening with a large diameter at the bottom, and an upper rotating shaft and a lower rotating shaft each forming a fitting part, and the relationship between each of the rotating shafts and each cap is determined by the rotating shaft. The caps are fitted into the upper and lower openings of the caps with their fitting portions in contact with the step portions of the caps, and the relationship between the caps and the cylindrical body portion is such that the caps are in contact with the step portions of the body portions. Hollow auger structure of an auger-type ice maker, wherein the auger is fitted into an opening in the body in a state in which the auger is fitted into an opening in the body, and the rotating shafts and the caps are joined by welding, and the cylindrical body and the caps are joined by welding. .