JPS626450Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses an auger mechanism to scrape off the ice that has grown on the inner surface of a freezing cylinder with a freezing system evaporation pipe wrapped around the outside and transfer it upward, and the shaved ice is transferred to the upper inner surface of the freezing cylinder. This invention relates to an auger-type ice maker that makes hard ice by compressing it in a compression passage formed by including ice, and the purpose is to ensure the strength of the cooling cylinder without reducing the cooling efficiency.

An embodiment of the present invention will be described below based on the drawings. 1 is a freezing cylinder that is open at the top and bottom and has an auger mechanism installed inside, and the auger mechanism is connected to the upper rotating shaft 2.
It is constructed by forming spiral teeth 3 on the outer circumferential surface of a rotary body 2 having a rotating body A and a lower rotating shaft 2B. Lower rotating shaft 2
B is inserted and supported by a sliding bearing 5 press-fitted into a support base 4 which is fitted and screwed into the lower opening of the freezing cylinder 1, and the upper rotating shaft 2A is inserted into the bearing housing 7 which is screwed into the freezing cylinder 1. It is inserted and supported by a radial bearing 8 and a thrust bearing 9 fitted into the inner surface. A compression housing 10 is fitted and screwed into the bearing housing 7, and ice compression passages 11 including the upper inner surface of the freezing cylinder 1 are formed on the outer surface at a plurality of locations. A passage 12 that is continuous with the compression passage 11 is also formed in the bearing housing 7. Further, tighten the nut 13 on the upper rotating shaft 2A to the position where it abuts the upper ring of the thrust bearing 9.
3 and a thrust bearing 9 to receive the thrust load of the rotating body 2. Further, a cap 14 surrounding the upper rotating shaft 2A and the nut 13 is screwed to the bearing housing 7, and an agitator 15 for releasing ice is connected to the end of the upper rotating shaft 2A projecting upward from the cap 14. Ice is ejected from the shooter 16 by rotation of the agitator 15. The end of the lower rotating shaft 2B is connected to the chain coupling 1 inside the casing 17 on which the support base 4 is placed.
8 to the drive output shaft 19. 20 is a water supply pipe that supplies water to the freezing cylinder 1.

Thus, the upper part of the freezing cylinder 1 forming the ice compression passage 11 is formed into a thick wall portion 1A, and the thick wall portion 1A has a portion facing the outlet of the compression passage 11 that is wider than the portion facing the entrance of the compression passage 11. It is further formed to have a thicker wall, and the freezing cylinder 1 below this is formed into a thinner wall portion 1B. Then, a freezing system evaporation pipe 20 is wound around the thin wall portion 1B to cool the freezing cylinder 1.

In the above configuration, the ice that has grown in the freezing cylinder 1 is scraped off by the spiral teeth 3 and transferred upward, and when it passes through the compression passage 11, it is compressed and most of the moisture is removed, becoming hard ice. This ice is passage 12
It is then sent to the shooter 16. When the ice is compressed in the compression passage 11 in this way, the internal pressure of the freezing cylinder 1 in this part becomes extremely high, but because the upper part of the freezing cylinder 1 forming the compression passage 11 is made into the thick part 1A. In order to withstand excessive internal pressure during compression, and taking into account that the internal pressure of the cylinder 1 facing the outlet portion of the compression passage 11 is higher than the internal pressure of the cylinder 1 facing the inlet portion of the compression passage 11, the thick portion 1A is designed to withstand excessive internal pressure during compression. By making the wall thickness of the cylinder 1 facing the outlet of the passage 11 thicker than the wall thickness of the cylinder 1 facing the entrance, deformation of the freezing cylinder 1 is prevented. On the other hand, since the freezing cylinder 1 in the portion where ice grows is formed in a thin wall portion 1B, and the evaporation pipe 21 is wound around this thin wall portion 1B, the ice making ability is improved without decreasing the cooling efficiency. Furthermore, since the evaporation pipe 21 is not wrapped around the thick wall portion 1A, that is, the outer surface of the freezing cylinder 1 forming the ice compression passage 11, ice does not adhere closely to the inner surface of the freezing cylinder 1 forming the ice compression passage 11. The compressed ice quickly passes through the compression passage 11.

As described above, the present invention forms the upper part of the freezing cylinder that forms the ice compression passage into a thick part, and the freezing cylinder below this is formed into a thin part, and the evaporation pipe of the refrigeration system is wound around this thin part. Therefore, the cooling efficiency does not decrease, and the freezing cylinder does not withstand the excessive internal pressure during ice compression and does not deform.In particular, the internal pressure of the freezing cylinder at the outlet part of the compression passage is higher than the inlet part of the compression passage. In consideration of this, by forming the thick wall portion to be thicker in the portion facing the outlet of the compression passage than the portion facing the inlet, deformation of the refrigeration cylinder facing the compression passage can be more reliably prevented.
This has a remarkable effect of ensuring the strength of the freezing cylinder.

Furthermore, because the evaporation pipe is not wrapped around the thick walled part of the freezing cylinder that forms the ice compression passage, and the heat transmission coefficient from the thin walled part around which the evaporation pipe is wound is also small, the temperature drop in the freezing cylinder in this part is small. This also has the advantage that compressed ice can be prevented from coming into close contact with the inner surface of the freezing cylinder, and the compressed ice can quickly pass through the compression passage.

[Brief explanation of the drawing]

The drawing is a vertical sectional view of the main part showing the internal structure of the auger ice maker of the present invention. 1... Refrigeration cylinder, 1A... Thick walled part, 1B... Thin walled part, 11... Ice compression passage, 21... Evaporation pipe.

Claims (1)

[Scope of utility model registration request] An auger mechanism scrapes off the ice that has grown on the inner surface of a freezing cylinder with a freezing system evaporation pipe wound around the outside and transports it upward, and the shaved ice is transferred to an ice compression passage formed including the upper inner surface of the freezing cylinder. In an auger-type ice maker that produces hard ice by compressing ice, an upper part of the freezing cylinder including a portion forming the compression passage is formed thick, and the thick part faces the entrance of the compression passage. An auger-type ice maker characterized in that a portion facing the outlet is thicker, a freezing cylinder below the thicker portion is thinner, and the evaporation pipe is wound around the thinner portion. .