JPS6132309Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention is an auger-type ice making device equipped with a cylindrical freezing casing and a pressing head that compresses ice sent upward from the freezing casing and guides it further upward. It's about machines.

b. Prior Art Conventionally, there are various types of auger ice making machines, and a typical configuration thereof is as shown in FIG. 2. That is, the screw 3 is disposed inside the refrigeration casing 31, which is entirely cylindrical.
3 is rotatably supported by a pressing head 35 fixed in the upper end 31c of the freezer casing 31 by a fixing member 34 such as a bolt, and a housing 36 fixing the lower end of the freezer casing 31 to the machine stand. . A cooling member 32 such as a cooling pipe constituting a part of the cooling system is tightly wound around the outer wall surface of the refrigeration casing 31 , and the outer periphery of the cooling member 32 is covered with a heat insulating material 37 . As is well known, the pressing head 35 compresses the ice scraped from the inner wall surface of the frozen casing 31 by the screw 33 and releases it into the upper discharge port 38.
and an axial ice compression passageway (not shown) guiding the ice. A discharge part 40 defining a discharge port 38 communicating with this ice compression passage is connected to the frozen casing 3.
It is fixed to a flange portion 31a at the upper end of the ice outlet 38, and the ice at the outlet 38 is guided to the ice storage. Further, a heat insulating material 39 is disposed in close contact with the upper end 31c of the frozen casing 31 and the outer periphery of the discharge section 40 to prevent the generation of dew.

The screw 33 is connected to an output shaft portion 44 of a drive motor 40 below the sealing portion 33a, and the drive motor 40 is fixed to a main body frame (not shown) via a water drop tray 42 having a drain port 43. be done.

In the auger-type ice maker having the above-described configuration, the surface of the frozen casing that comes into contact with the fastening surface of the fixture 34 that fixes the press head 35 to the frozen casing 31 is a curved surface, so it is not fixed to prevent water leakage. The tool 34 is fixed to the refrigeration casing 31 via a bolt with a seal or an O-ring 41. However, since the fixture 34 is disposed in an area where ice is compressed and the internal pressure near the fixture is extremely high, it has been difficult to completely prevent water leakage caused by this. Furthermore, although the heat insulating material 39 is provided to prevent dew from forming on the upper end 31c of the frozen casing and the discharge portion 40, it has been difficult to completely prevent the formation of dew.

Therefore, water leakage through the fixture 34 and dew formed on the outer surface of the insulation material 39 such as the upper end 31c of the frozen casing and the discharge part 400 accumulate on the upper surface 37a of the insulation material 37, and the interface between the insulation material 37 and the frozen casing 31 to invade. The intruding water repeatedly freezes and thaws due to intermittent ice-making operation, causing cracks in the insulation material 37 and peeling from the surface of the frozen casing, reducing its insulation effect and ice-making efficiency. On the other hand, the water that has flowed down along the outer surface of the heat insulating material 37 drips near the output shaft portion 44 of the drive motor 40 and further
4 and entered the gear case, promoting deterioration of lubricating oil such as grease in the gear case. As a result, abnormal noises are generated from the gears and bearings, and the gears and bearings are damaged, resulting in the need to replace the gears and bearings with new ones before the end of the product's lifespan. Therefore, water leakage through the fixture 34;
Dew formed on the surface of the heat insulating material 39 such as the upper end 31c of the refrigerating casing and the discharge part 40 has caused serious accidents such as damage to the heat insulating material 37 and the drive motor 40.

C. Problems that the invention aims to solve Therefore, in the conventional auger ice maker,
Water leakage through the fixture that fixes the press head to the freezer casing, and water droplets generated from dew formed at the upper end of the freezer casing and the discharge part, flow down to the insulation material around the cooling member and the lower part of the freezer casing. There was a problem in that it caused damage to the drive motor that drives the material and screw.

d Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a cooling member material disposed on the outer peripheral surface of a cylindrical refrigerating casing to cool the refrigerating casing, and a refrigerating casing. An auger-type ice maker equipped with a pressing head that compresses the ice sent from the cooling member and sends it upward, and a fixture that fixes the pressing head to the refrigerating casing. A dew pan is disposed below the refrigerating casing, and the dew pan is watertightly fitted to the outer periphery of the refrigerated casing, and the dew pan is provided with a drainage section for draining water from the dew pan. It is.

e Function In the auger-type ice maker of the present invention having the above-mentioned configuration, water leaks through the fixture when compressing ice sent from the frozen casing, and water is sent upward from the pressing head in the portion above the fixture. The water droplets produced by the growth of the dew cooled by the compressed ice are reliably collected in the dew pan. At this time, since the dew pan is fitted into the outer circumferential surface of the frozen casing, the water leakage through the fixing device and the water droplets generated from the dew are absorbed into the outer circumferential surface of the frozen casing below the dew pan and the heat insulating material covering the cooling member. There is no flow down to the inner and outer surfaces. The water collected on the drip pan is drained out of the machine through the drainage section.

f. Embodiment Next, a preferred embodiment of the auger ice maker of the present invention will be described in detail with reference to the drawings.

In FIG. 1, a screw 3 located inside a cylindrical refrigeration casing 1 is rotatably supported by a pressing head 5 at its upper end and by a housing 6 at its lower end. The pressing head 5 is fixed to the upper end of the frozen casing 1 from the outside of the frozen casing by a fixing device 4 such as a bolt, and is used for compressing ice sent from the frozen casing 1 and guiding it to the upper discharge port 8a. A passageway (not shown) is provided. The housing 6 fixes the lower end of the refrigeration casing 1. A cooling member 2 such as a cooling pipe constituting a part of the cooling system is tightly wound and fixed to the outer wall surface of the refrigeration casing 1. A heat insulating material 7 is provided around the outer periphery of the cooling member 2 and the refrigeration casing 1.

A dew pan 14 is disposed above the cooling member 2 and between the fixture 4 and the upper end 7a of the heat insulating material 7. The dew pan 14 is, for example, an annular plate having a circular hole in the center, and a central circumferential wall portion 14a defining the center hole projects slightly above the flat portion 14b. The dew pan 14 has a central circumferential wall 1
A drainage section 15 is provided for discharging water droplets flowing down over 4a, the drainage section 15 defines a drainage port and is connected to one end of a hose 16. The other end of the hose 16 is directed onto the water droplet tray 12. Preferably, a sealing material (not shown) is provided between the central circumferential wall 14a of the dew pan 14 and the freezer casing 1 to ensure sealing.
or by seal welding,
By fitting the frozen casing 1 into the center hole of the dew pan 14, the dew pan 14 is attached to the outer periphery of the frozen casing 1 in a watertight manner. After that, it is preferable that the heat insulating material 7 is foam-formed so as to be integrated with the dew pan 14. A discharge portion 8 made of, for example, resin is fixed to a flange portion 1b at the upper end of the refrigeration casing 1, and defines a discharge port 8a.

The screw 3 is connected to an output shaft portion 11 of a drive motor 10, and the drive motor 10 is fixed to a main body frame (not shown) via a water drop tray 12.

Next, the operation of the auger ice maker of the present invention having the above configuration will be explained.

When the ice making machine is turned on, ice making water is stored in the ice making water tank (not shown) up to a certain level.
This ice-making water is then sent into the freezing casing 1. At the same time, the drive motor 10 and the compressor (not shown) start operating, and the refrigerant is circulated and supplied into the cooling member 2 to cool the refrigeration casing 1.
is cooled and a thin layer of ice is formed on its inner wall. This thin ice layer is scraped off by the screw 3 and sent to the ice compression passage of the pressing head 5, where it is compressed into a hard ice column.The ice column is cut into ice cubes of appropriate size by the cutter 17, and the ice is discharged through the outlet 8a. It is then taken out into the ice storage.

In the ice making process described above, the ice pieces scraped off by the screw 3 are sent in a shear bed state to the ice compression passage of the pressing head 5 and compressed, so that the pressure inside the pressing head increases. For this reason, some of the water generated by compressing the ice sent to the ice compression passage passes through the gap between the inner wall surface of the refrigeration casing 1 and the surface of the pressing head 5 that contacts this inner wall surface. It leaks out of the freezer casing through the hole in the freezer casing 1 that can receive the threaded part of the fixture 4, and the gap between the washer of the fixture 4 and the cylindrical outer surface of the freezer casing 1. The leaked water flows down the outer peripheral wall of the refrigeration casing 1, passes over the central circumferential wall 14a of the dew pan 14, and is guided into the dew pan 14. At this time, since the space between the outer surface of the frozen casing 1 and the central circumferential wall 14a is kept watertight, water leakage will not flow down between the frozen casing 1 and the central circumferential wall 14a. On the other hand, since the upper end 1c of the frozen casing 1 and the discharge part 8 are cooled by the ice sent to the discharge port 8a, dew forms on the surfaces of these members that come into contact with the outside air. This dew grows and becomes water droplets on the upper end 1 of the frozen casing.
It flows down on the outer peripheral surface of c and is guided into the dew pan 14.

The water thus collected in the drip tray 14 passes through the drain section 15 and the hose 16 to the drip tray 14.
2 and is discharged to the outside of the machine through the drain port 13 of the water drop tray 12. Therefore, the dew pan 14
Water leakage is completely prevented from entering the gap between the outer circumferential surface of the refrigeration casing 1 and the inner surface of the heat insulating material 7 located below, and at the same time, the output of the drive motor 10 is reduced through the outer surface of the heat insulating material 7. Shaft part 11
No more water droplets dripping.

g. Effects of the invention As described above, in the auger ice maker of the invention, a condensation tray that fits watertightly into the freezer casing is provided at the upper end of the insulating material that covers the cooling member on the outer peripheral surface of the freezer casing. , water leakage through the fixture securing the press head to the refrigeration casing;
Enlarged water droplets from the dew generated in the upper part of the frozen casing and the discharge part can be collected in the dew pan. Therefore, water droplets are completely prevented from dripping onto the heat insulating material around the cooling member or onto the output shaft of the drive motor that drives the screw. Therefore, it is possible to prevent damage such as deterioration and peeling of the insulation material, thereby preventing a decrease in the insulation effect and ice making efficiency, and furthermore, since there is no intrusion into the gear case from the output shaft portion, the gear This can prevent serious accidents such as deterioration of lubricating oil such as grease inside the case, wear and tear of gears and bearings, etc.

In addition, since the insulation material has some hygroscopicity, the contact surface tends to become unhygienic, but if the insulation material covering the upper end of the freezer casing and the discharge section is removed as shown in Figure 1, this can be prevented. The number of hygienic contact surfaces can be reduced, and the discharge part, press head, dew pan, screw, etc. can be easily attached and detached, making maintenance and inspection work easier. Furthermore, if the outer diameter of the dew pan is set to be larger than the outer diameter of the heat insulating material covering the cooling member,
This dew pan can also be used as a jig when foaming the heat insulating material.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional view showing the ice making mechanism of an auger ice maker according to the present invention, and FIG. 2 is a partially sectional view showing the ice making mechanism of a conventional auger ice maker. 1...Frozen casing, 1b...Frozen casing flange portion, 1c...Frozen casing upper end,
2... Cooling member, 3... Screw, 4... Pressing head fixing tool, 5... Pressing head, 6... Housing,
7...Insulating material, 7a...Insulating material upper end, 8...Discharge portion, 8a...Discharge port, 10...Drive motor, 1
DESCRIPTION OF SYMBOLS 1...Output shaft portion, 12...Water droplet tray, 13...Drain port, 14...Dew tray, 14a...Central circumferential wall portion, 14b...Flat portion, 15...Drain port, 16...
...Hose, 17...Cutter.

Claims (1)

[Scope of utility model registration request] A cylindrical frozen casing 1 having a screw 3 inside, a cooling member 2 disposed on the outer peripheral surface of the frozen casing and covered with a heat insulating material 7, and a fixing member 4 installed inside the upper end of the frozen casing 1. In an auger-type ice maker equipped with a pressing head 5 having an axial ice compression passage attached from the outside of the upper end of the casing, at the upper end of the heat insulating material 7 covering the cooling member 2 and below the fixture 4, A dew pan 14 that fits watertightly on the outer periphery of the upper end of the frozen casing is disposed,
This auger-type ice maker is characterized in that a drain port 15 is provided in a dew tray 14.