JP2020012571A - Flow-down type ice making machine - Google Patents

Abstract

To provide a flow-down type ice making machine capable of effectively capturing scattering water of unfrozen water and deicing water falling from an ice making plate and splashed at an ice guide portion, and free from arching of ice due to re-freezing of ice block in an ice storage, and recovery loss of the unfrozen water.SOLUTION: In a deflector 34 forming a water curtain 36 to receive falling water (unfrozen water, deicing water) from an ice making plate, a projection rib 40 is formed on a part on which the falling water is likely to concentrate to stabilize flow of the water curtain 36, so that scattering water is surely captured without fail. Further, in a model free from the deflector, a flow dividing pipe branched from a supply passage of ice making water is disposed to form the water curtain with water jetting from the flow dividing pipe to stably capture the scattering water.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a falling ice machine, and more particularly, water dropped from an ice making plate of a falling ice machine flies by jumping at an ice guide, and the flying water jumps into an ice storage to recycle ice blocks in the ice storage. The present invention relates to an invention that solves the problem of freezing.

  2. Description of the Related Art Ice machines that automatically produce a large amount of ice blocks are widely used in various facilities such as restaurants and coffee shops. This ice maker includes, for example, a closed-cell type, an auger type, and a flow-down type, depending on the difference in the ice making structure corresponding to the required shape of ice. The present invention relates to an improvement of a falling ice machine in which a large number of ice blocks are grown on the surface of a cooled ice making plate by supplying ice making water from above the ice making plate. Therefore, a schematic configuration of the falling ice maker will be described first.

  The falling ice maker 10 shown in FIG. 16 includes an ice making unit 14 for producing an ice block 17 and a refrigeration circuit 30 for cooling the ice making unit 14, and the ice block 17 formed and dropped by the ice making unit 14 is adjacent. The ice is stored in the placed ice storage 12. The ice making unit 14 includes a pair of ice making plates (ice making units) 16, 16 vertically opposed to each other, and is provided below the ice making plates 16, 16 to store ice making water, and to form the ice making plates 16, 16. An ice making water tank 18 is provided for collecting uniced ice making water (hereinafter referred to as uniced water) and deicing water flowing down from the tank. The ice making plates 16 and 16 have the evaporator EP derived from the refrigeration circuit 30 disposed in close contact with both ice making plates. Further, above the ice making unit 14, a water sprinkling section (ice making water supply means) 20 for supplying ice making water from the ice making water tank 18 to the surface (ice making surface) of each ice making plate 16, and an ice making surface of the ice making plate 16 A deicing water supply means 24 for supplying deicing water to the opposite surface (back surface) is provided. In the ice making unit 14 shown in the drawings of the present specification, three rows of ice making sections 15 each including a pair of ice making boards 16 and 16 are provided at required intervals, and the ice making sections 16 and 16 of the ice making sections 15 in the right row are arranged. Is smaller than the ice making plates 16 and 16 in the other ice making units 15.

  The ice making water tank 18 has an upper opening, and the upper opening is located immediately below the ice making plates 16, 16 constituting each ice making section 15. The uniced water and deiced water flowing down from the ice making plates 16 and 16 are collected and stored in the ice making water tank 18 and used as ice making water during the ice making operation. Above the ice making water tank 18, an ice guide portion 28 for guiding the ice dropped from the ice making plates 16, 16 to the ice storage 12 during the deicing operation is arranged. Since a large number of slits 28a are formed on each inclined surface of the ice guide portion 28 as shown in FIGS. 11 to 16, the non-icing water and the deicing water that have fallen on the ice guide portion 28 are separated by the slit 28a. Through the ice making water tank 18. Further, the ice blocks 17 that have fallen from the ice making plates 16, 16 are deflected by colliding with the ice guides 28 and discharged toward the ice storage 12.

  The water sprinkling section 20 is provided above the ice making plates 16, 16 in the respective ice making sections 15, and is capable of spraying ice making water on the ice making surface, and the ice making water sprinkling through a water supply pipe 21. And an ice making water pump PM for pumping ice making water from the ice making water tank 18 to the vessel 22. When the ice making water pump PM is driven during the ice making operation, the water sprinkling section 20 scatters and supplies the ice making water from the ice making water tank 18 to each ice making plate 16 (the ice making surface) through the ice making water sprinkler 22. During the deicing operation, the ice making water pump PM is stopped, and the supply of the ice making water to the ice making unit 15 is stopped. The deicing water supply means 24 is located below the ice making water sprinkler 22 and at the upper part between the ice making plates 16, 16 and sprays deicing water on the back surface of each ice making plate 16. 26, and a water supply valve WV inserted in a water supply pipe 25 connected to an external water source. The deicing water supply means 24 supplies deicing water from the deicing water sprinkler 26 to the back surface of each ice making plate 16 by opening the water supply valve WV for the deicing operation, and closes the water supply valve WV during the ice making operation. Then, the supply of deicing water to the ice making unit 15 is stopped.

  The refrigeration circuit 30 shown in FIG. 16 includes a compressor CM, a condenser CD, an expansion valve EV serving as a pressure reducing means, and an evaporator EP closely mounted between the ice making plates 16, 16. The CM, the condenser CD, the expansion valve EV, and the evaporator EP are connected in order through a refrigerant pipe (refrigerant circulation pipe) 31 to circulate the refrigerant through the pipe. In addition, the refrigeration circuit 30 includes a bypass circuit including a bypass pipe 32 for directly guiding the refrigerant from the compressor CM to the evaporator EP, and a hot gas valve HV inserted in the bypass pipe 32. Then, when the refrigeration circuit 30 enters the ice making operation, the hot gas valve HV is closed, and the fan FM is driven to drive the compressor CM while cooling the condenser CD. Further, by opening the expansion means EV and adiabatically expanding the refrigerant, each ice making plate 16 is cooled below the freezing point by the evaporator EP, and ice making water supplied from above is frozen on the ice making surface to form ice blocks 17. . When the refrigeration circuit 30 enters the deicing operation, the fan FM is stopped while the compressor CM is being driven and the hot gas valve HV is opened, so that the ice making plate 16 is heated by the hot gas supplied to the evaporator EP. Heat to promote deicing.

  During the ice making operation of the above-mentioned falling ice machine, the ice making water in the ice making water tank 18 is pumped by the ice making water pump PM and supplied to the ice making water sprinkler 22, and the ice making in each ice making part 15 is performed from the ice making water sprinkler 22. The water is supplied to the ice-making surfaces of the plates 16, 16. Part of the supplied ice making water freezes on the ice making surfaces of the ice making plates 16 and 16 and grows into ice blocks 17, and the ice making water that has not been frozen (non-freezing water) flows down the ice making plates 16 and 16 and falls. The ice is collected in the ice making water tank 18 through the slit 28a of the ice guide 28, and is again circulated. However, when the freezing water that has fallen collides with the ice guide portion 28, a part of the water falls into the ice storage 12 as bouncing water. The water (flying water) that has jumped into the ice storage 12 wets the ice blocks stored in the ice storage 12 and causes the ice blocks to solidify (re-freeze) with each other, resulting in the formation of ice arching. Further, since the uniced water is sufficiently cooled during the ice making process, it is uneconomical to become flying water and deviate from the circulation path, and it is against the energy saving. Further, in the deicing operation, the deicing water supplied from the deicing water sprinkler 22 through the water supply pipe 25 flows down the back surfaces of the ice making plates 16 and 16 to heat the ice making plates 16 and 16. The ice mass 17 frozen on the ice making surface is thawed to promote the detachment of the ice mass 17. The deicing water flowing down the back surfaces of the ice making plates 16, 16 also falls, and is collected in the ice making water tank 18 through the slit 28a of the ice guide 28. However, it is the same as the case of the non-ice-free water that the falling deicing water collides with the ice guide portion 28 and partly jumps and flies, jumping into the ice storage 12 as flying water.

  Therefore, as shown in FIGS. 4 to 7, a deflector 34 that is gently inclined is provided below the ice making unit 15 in the right row and diagonally above the ice making water tank 18. The deflector 34 receives the ice blocks 17 falling from the ice making plates 16 and 16 in the ice making unit 15 in the left row by the deicing operation, deflects the ice blocks 17 to the ice guide unit 28, and drops from the ice making plates 16 and 16. The water curtain 36 shown in FIG. 5 is formed by receiving uniced water (during the ice making operation) and deicing water (during the deicing operation). That is, the water (non-freezing water, de-icing water) that has collided with the deflector 34 falls obliquely downward along the lateral direction of the deflector 34 to form the water film-shaped water curtain 36. Due to the formation of the water curtain 36, the flying water that has fallen from the left two rows of ice making parts 15 and 15 shown in FIG. 4 and bounced by the ice guide part 28 is captured by the water curtain 36 as shown in FIG. The ice is collected in the ice making water tank 18 through the slit 28a of the ice guide portion 28.

JP 2010-249490 A JP-A-2006-6376

(Issues when forming a water curtain)
In order to catch the flying water with the water curtain 36, as shown in FIG. 6, the water curtain 36 is formed uniformly along the lateral direction of the deflector 34, which is ideal because there is no leakage of the flying water. It is. However, a uniform and stable water curtain 36 is formed in the lateral direction of the deflector 34 when the amount of falling water (non-freezing water, deicing water) is uniform in the lateral direction of the deflector 34. It is. However, as shown in FIG. 7A, if the amount of water falling onto the deflector 34 is not uniform, it may be difficult to form a stable water curtain 36. For example, when the amount of water that falls on the deflector 34 is large, as shown in FIG. 7B, the water curtain 36 may fly laterally as a result of partial concentration of water at that location. As shown in FIG. 7 (c), the water may be irregularly collected and the water curtain 36 may be cut. If the water curtain 36 flutters in the horizontal direction or cuts in this way, the above-described partial capture and leakage of the flying water will occur. When the trapping of the flying water occurs, the trapped flying water jumps into the ice storage 12, leading to the arching of ice due to the re-icing of the ice blocks 17 in the ice storage and the recovery loss of the uniced water. There is a disadvantage.

(Issues when installing deflectors)
The deflector 34 described with reference to FIGS. 6 and 16 receives the falling water (non-freezing water and deicing water) from the ice making plates 16 and 16 to form a water curtain 36, which can capture the flying water. In addition to preventing re-freezing of the ice blocks in the refrigerator 12, it has an advantage of contributing to energy saving by enabling effective recovery of non-freezing water. However, on the other hand, as shown in FIG. 12, the gap S between the ice guide 28 and the deflector 34 (referred to as an ice-fall opening) is considerably narrow. If a large amount of the ice block 17 falls at one time, the ice block 17 may be caught and clogged in the ice-drop opening S as shown in FIG. When the ice block 17 is clogged in the ice falling opening S in this manner, ice cannot be discharged to the ice storage 12. Further, when this state continues, as shown in FIG. 14, ice blocks 17 gradually accumulate on the ice guide portion 28 to form multiple ice making, which may damage the ice making plates 16 and 16 or perform a smooth ice making and deicing operation. There is a risk that it will hinder you.

In order to solve the above-mentioned problems and achieve the intended purpose, the invention according to claim 1
An ice making unit in which a plurality of rows of ice making sections comprising an evaporator sandwiched between a pair of ice making plates are provided;
A water spraying unit disposed above the ice making unit, for flowing ice making water or deicing water supplied to each ice making plate to the ice making surface;
An ice making water tank disposed below the ice making section, for collecting and storing unfreezed ice making water or deicing water falling from the ice making plate;
An ice storage disposed diagonally below the ice making unit and collecting ice blocks falling from the ice making plate,
An ice block disposed between the ice making water tank and the lower portion of the ice making plate, for guiding ice blocks falling from the ice making plate to the ice storage, and for allowing water falling from the ice making plate to fall into the ice making water tank. A guide,
Disposed between the lower part of the ice making part and the ice guide part, and deflects the ice block falling from the ice making plate to the ice guide part,
A falling type ice making machine comprising a deflector for flowing water falling from the ice making plate to the ice guiding portion to form a water curtain,
The gist is that a projecting rib is formed in a region of the deflector and in a region where water falling from the ice making plate is likely to concentrate.
According to the invention according to claim 1, water (non-freezing water, deicing water) falling from the ice making plate constituting the ice making section of each row is formed with a protruding rib at a position on the deflector where it is most likely to concentrate, The water flowing from the deflector can be made uniform. Thereby, the water curtain formed on the deflector is also uniform and stable, and does not fail to catch the flying water.

  In the invention described in claim 2, the protruding rib is located upstream of a path on which the water falling from the ice making plate is concentrated, and is a branch rib set at a height at which the water cannot get over. And

  In the invention described in claim 3, the projecting rib is located upstream of a path where a large amount of water falls from the ice making plate, and is a water stop rib set to a height at which the water can get over. Make a summary.

  In the invention according to claim 4, the projecting rib is located at an upstream of a path where water falling from the ice making plate is concentrated, and is a guide rib set at a height at which the water can get over. I do.

The invention according to claim 5 solves the another problem and achieves an intended purpose.
An ice making unit in which a plurality of rows of ice making sections comprising an evaporator sandwiched between a pair of ice making plates are provided;
A water spraying unit disposed above the ice making unit, for flowing ice making water or deicing water supplied to each ice making plate to the ice making surface;
An ice making water tank disposed below the ice making section, for collecting and storing unfreezed ice making water or deicing water falling from the ice making plate;
An ice storage disposed diagonally below the ice making unit and collecting ice blocks falling from the ice making plate,
An ice block disposed between the ice making water tank and the lower portion of the ice making plate, for guiding ice blocks falling from the ice making plate to the ice storage, and for allowing water falling from the ice making plate to fall into the ice making water tank. A guide,
A water supply pipe for circulating the ice making water of the ice making water tank to the water sprinkling section with an ice making water pump,
The water supply pipe is branched from the water supply pipe, horizontally disposed obliquely above the ice guide portion, and ice making water from the ice making water tank is jetted through a number of through holes to form a water curtain above the ice guide portion. The gist of the present invention is to provide a branch pipe for forming
According to the invention according to claim 5, disposing the deflector is abolished, and the ice making water that is pumped from the ice making water tank to the water supply pipe during the ice making operation is branched, and the water curtain is formed by the branch pipe. The flying water can be reliably captured by the stable water curtain.

  In the invention according to claim 6, the point is that, during the deicing operation, the supply of deicing water to the ice making unit in the row closest to the branch pipe in the plurality of rows of ice making units is stopped. .

  According to the falling ice machine of the configuration in which the water curtain is formed by the deflector, the water curtain formed on the deflector is made uniform and stable by forming the protruding rib in the portion where the water falling on the deflector tends to concentrate. Become something. For this reason, the flying water that has fallen from the ice making plate and splashed by the ice guide portion is effectively captured by the water curtain. Therefore, the ice blocks in the ice storage do not re-freeze due to the flying water.

  In the case of a falling ice machine without a deflector, a water curtain is formed by the branch pipe provided with the branch water for the ice making water in the ice making water tank, so that the falling water from the ice making plate can be formed. The flying water splashed by the ice guide is effectively captured by the water curtain. In addition, since the deflector does not exist on the ice falling path from the ice making plate, the ice dropped on the ice guide is smoothly guided to the ice storage. That is, no ice clogging occurs between the ice making plate and the ice guide portion, and there is no inconvenience such as damage to the ice making plate due to multiple ice making.

FIG. 2 is an enlarged perspective view of the deflector according to the first embodiment of the present invention. It is an expansion perspective view of the modification 1 of the deflector shown in FIG. It is an expansion perspective view of the modification 2 of the deflector shown in FIG. It is sectional drawing of the ice making unit during the ice removal operation of a falling ice machine. FIG. 5 is an enlarged sectional view of an ice guide portion and a deflector provided below the ice making unit shown in FIG. 4. FIG. 6 is a perspective view showing a state in which water that has fallen on the deflector shown in FIG. 5 flows obliquely downward along the deflector to form a uniform water curtain. (a) is a perspective view showing a state in which water falling on a deflector is partially concentrated, and (b) is a partially enlarged view of (a), showing a state in which a water curtain is fluttering sideways. (C) is a partially enlarged view of (a), and shows a state in which vertical stripes are formed in the water curtain. FIG. 7 is a schematic perspective view showing an arrangement state of an ice guide and a branch pipe in a second embodiment of the present invention. FIG. 9 is a schematic perspective view of the arrangement state of the branch pipes and the ice guide shown in FIG. 8 as observed from a different angle from FIG. 8. FIG. 10 is a schematic perspective view showing a state where a water curtain is formed from the branch pipe shown in FIG. 9 toward the ice guide portion. FIG. 9 is a cross-sectional view of the falling icemaker using the branch pipe shown in FIG. 8 during an icemaking operation. It is sectional drawing to which the lower part of the ice making unit in a falling ice machine was expanded, and the space | interval (ice fall opening part) between an ice guide part and a deflector is shown. FIG. 12 is a diagram illustrating a state in which ice blocks falling from the ice making plate are clogged at the falling ice opening portion in the configuration of FIG. 12 during deicing of the falling ice maker. FIG. 14 is an explanatory diagram showing that multiple ice making occurs in the ice making unit if the state of the ice clogging of FIG. 13 continues. (a) And (b) is a sectional view of the falling ice machine explaining the reason why flying water can be prevented from jumping into the ice storage even if the water curtain is not formed from the branch pipe during the deicing operation. . FIG. 2 is a schematic sectional view showing an ice making unit and a refrigeration circuit of the falling ice maker, wherein the ice making unit is in an ice making operation.

  In the falling ice machine 10 in which the water curtain 36 is formed by the deflector 34 described with reference to FIGS. 4 to 6, the flying water jumps into the ice storage 12 because the water curtain 36 captures the flying water. It is excellent in that there is no inconvenience to refreeze ice blocks. However, since the falling ice making machine 10 has the deflector 34 as an essential configuration, as described with reference to FIG. 7, the water falling from the ice making plates 16 and 16 does not uniformly fall on the deflector, and the water partially flows. There may be a part that concentrates on In this case, the water curtain 36 flutters sideways (see FIG. 7B), or a vertical stripe-shaped cut is formed in the water curtain 36 (see FIG. 7C), and a stable water curtain 36 is not formed. .

  The falling ice maker 10 according to the first embodiment shown in FIG. 1 is configured to form a stable water curtain 36 by making the amount of water dropped on the deflector 34 uniform. For example, in the falling ice maker 10 during the ice making operation shown in FIG. 16, ice making water sprayed on the ice making plates 16, 16 falls along the ice making plates 16, 16. However, when observing the flow of water in the horizontal direction of the ice making plates 16, 16, the ice making water is drawn in the left and right vertical direction of each ice making plate 16 due to the surface tension of the water, and falls from the left and right sides of each ice making plate 16. There is a phenomenon that the amount of water becomes relatively larger than that near the center. For this reason, the water that falls to the deflector 34 tends to concentrate on the left and right sides of the deflector 34 as a whole, so that the water curtain 36 flutters horizontally as shown in FIG. As shown in (c), a break occurs in the water curtain 36.

  Therefore, in the present invention according to the first embodiment, as shown in FIG. 1, in the region of the deflector 34, the water (non-freezing water, deicing water) that falls from the ice making plates 16, 16 tends to concentrate. A protruding rib 40 is formed. Due to the protruding ribs, a stable flow of the falling water as a whole is secured in the deflector 34 even if there is a portion concentrated on the falling water from the ice making plates 16 and 16 to the deflector 34. As a result, the water flowing from the deflector 34 becomes uniform, and a stable water curtain 36 is formed. More specifically, as shown in FIG. 1, in the vicinity of the left side or the right side of the deflector 34, in a region where water falling from the ice making plates 16, 16 is likely to concentrate, a distribution rib 40 a is formed as the protruding rib. Is formed. The height dimension of the flow dividing rib 40a is preferably set to a height (for example, 1.5 mm) that does not allow falling water to get over.

(Modification 1)
FIG. 2 shows a first modification of the protruding rib 40 according to the first embodiment, which is located upstream of a path where the flow rate of water falling from the ice making plates 16 and 16 is large and at which the water can climb over A water stop rib 40b set to (for example, 1.0 mm) is provided.

(Modification 2)
FIG. 3 shows a second modification of the protruding rib 40 according to the first embodiment, which is located upstream of a path on which the water falling from the ice making plates 16 and 16 is concentrated and at which the water can get over the height ( For example, a guide rib 40c set to 1.0 mm) is provided.

  In any of the first embodiment, the first modification, and the second modification, where the protruding ribs 40 (40a, 40b, 40c) are formed on the deflector 34 is best determined by actually performing trial production in the course of development research. It is the one that was located. That is, the number of the protruding ribs 40 and where the deflectors 34 are provided are important in forming the water curtain 36. In the first embodiment (and the first and second modifications), the greatest common contraction is used. The numerically best location on the deflector is identified.

  The falling ice maker 10 shown in FIGS. 4 and 16 has the deflector 34 as an essential structure. However, by providing the deflector 34, the opening size of the ice falling opening S between the ice guide portion 28 and the deflector 34 becomes narrower as described in the section of the problem, and the ice falling from the ice making plates 16, 16 is reduced. Ice that has clogged the falling ice opening S. As described above with reference to FIGS. 12 to 14, there is a possibility that the ice making plates 16 and 16 may be damaged due to multiple ice making. Therefore, in the flow-down type ice making machine 10 according to the second embodiment of the present invention, as shown in FIG. 11, instead of disposing the deflector 34, a distribution pipe 42 is provided. That is, in the falling icemaker 10 shown in FIG. 11, since the deflector 34 is not provided, the icefall opening S is provided on a path on which the ice blocks 17 dropped from the icemakers 16 are guided to the ice storage 12. It does not exist, no ice clogging occurs at this site, and there is no development of multiple ice making.

  However, since the deflector 34 is eliminated, the water curtain 36 for capturing the above-mentioned flying water is not formed. In this state, the flying water formed by splashing the ice making water jumps into the ice storage 12, causing an inconvenience of reicing the ice blocks in the storage. For this reason, in the second embodiment, as shown in FIG. 8, a branch pipe 42 is provided, a water curtain 36 is formed by the branch pipe 42, and the flying water is captured by the water curtain 36. . That is, regarding the water supply pipe 21 that circulates the ice making water from the ice making water tank 18 to the ice making water sprinkler 22 by the ice making water pump PM, as shown in FIG. 8, a branch pipe 42 branched from the water supply pipe 21 is used. , Is horizontally positioned obliquely above the ice guide portion 28. As shown in FIG. 9, a large number of through-holes 42a (preferably horizontal slit-like through-holes) are formed in the portion along the lateral direction of the branch pipe 42 so as to be directed to the ice guide portion 28. It is.

  For this reason, a part of the ice making water which has been pressure-fed through the water supply pipe 21 and blows out from the through hole 42a along the lateral direction of the branch pipe 42, and as shown in FIG. A water curtain 36 is formed, which flows obliquely downward toward the arc. Therefore, the flying water that the ice making water falling from the ice making plates 16 and 16 bounces at the ice guiding portion 28 during the ice making operation is reliably captured by the water curtain. Further, since the water curtain 36 is formed by the branch pipe 42, a stable water curtain 36 is always formed during the ice making operation. Therefore, the water curtain 36 does not fail to catch the flying water.

  In the flow-down type ice making machine 10 of the second embodiment, the water curtain 36 is formed by the ice making water branched to the branch pipe 42 during the ice making operation. However, during the deicing operation, the ice making water pump PM is stopped, so that the circulating supply of the ice making water is not performed. Therefore, the water curtain 36 cannot be formed by the branch pipe 42. During this deicing operation, deicing water, which is external tap water, is supplied from the deicing water sprinkler 26 to the ice making plates 16, 16 in each ice making section 15, as described above. For this reason, the deicing water that has fallen from the ice making plates 16, 16 bounces off the ice guide 28 and becomes flying water, jumps into the ice storage 12, and refreezes the ice blocks. In particular, in the second embodiment, since the deflector 34 is not provided, the flying water easily jumps into the ice storage 12.

  Therefore, in the second embodiment, the supply of deicing water during the deicing operation is performed for the ice making plates 16 and 16 on the side closest to the branch pipe 42 among the plurality of rows of the ice making units 15 formed of the ice making plates 16 and 16. Stopping eliminated the need for a water curtain. That is, in the falling ice making machine 10 shown in FIG. 15A, when deicing water is supplied to the three rows of ice making sections 15 composed of the ice making plates 16, 16, the deicing water travels along the right row of ice making sections 15 adjacent to the distribution pipe 42. The flying water due to the deicing water easily jumps into the ice storage 12 because the water curtain 36 that blocks the flying water does not exist. However, in FIG. 16, the evaporator EP arranged in the three rows of ice making sections 15 is such that the inlet side of the hot gas from the refrigeration circuit 30 is above the ice making sections 15 in the right row, and the outlet side of the hot gas is the left side. It is below the ice making section 15 of the row. Therefore, when the operation is switched from the ice making operation to the deicing operation, the hot gas valve HV is opened in FIG. 16, and the hot gas flows from the inlet of the evaporator EP located above the ice making unit 15 in the right-hand row. Flows while heating the ice making section 15 of the left side, and flows out from the outlet of the evaporator EP located below the ice making section 15 in the left row. Since the hot gas flowing through the evaporator EP has a sufficiently high temperature on the inlet side, it is not necessary to supply deicing water to the ice making plates 16 and 16 on the left side.

  That is, as shown in FIG. 15B, the supply of the deicing water to the ice making plates 16, 16 in the ice making unit 15 in the right-hand row may be stopped. For this reason, since the deicing water does not fall from the ice making plates 16 and 16 in the right-hand row during the deicing operation, flying water due to this does not exist, and there is no problem even if the water curtain is not formed. In the middle row and the left side of the ice making section 15, the thermal energy of the hot gas flowing through the evaporator EP gradually decreases. Ice water is supplied.

12 ice storage, 14 ice making unit, 15 ice making section, 16 ice making plate, 17 ice blocks,
18 ice making water tank, 20 water sprinkling section, 21 water supply pipe, 28 ice guide section,
34 deflector, 36 water curtain, 40 projecting rib, 40a diverting rib,
40b water stop rib, 40c guide rib, 42 branch pipe, 42a through hole,
EP evaporator, PM ice making water pump

Claims (6)

An ice making unit (14) in which a plurality of rows of ice making units (15) comprising an evaporator (EP) sandwiched between a pair of ice making plates (16, 16) are provided;
A water spraying unit (20) disposed above the ice making unit (15), for flowing ice making water or deicing water supplied to each ice making plate (16) to the ice making surface,
An ice making water tank (18) disposed below the ice making section (15) and collecting and storing unfreezed ice making water or deicing water falling from the ice making plates (16, 16).
An ice storage (12) disposed diagonally below the ice making unit (15) and collecting ice blocks (17) falling from the ice making plates (16, 16),
An ice block (17) disposed between the ice making water tank (18) and the lower part of the ice making plates (16, 16) and falling from the ice making plates (16, 16) is guided to the ice storage (12). At the same time, water falling from the ice making plate (16, 16) is dropped into the ice making water tank (18) with an ice guide portion (28),
The ice block (17) disposed below the ice making section (15) and the ice guide section (28) and falling from the ice making plates (16, 16) is deflected to the ice guide section (28). Along with
A falling ice machine comprising a deflector (34) for flowing water falling from the ice making plates (16, 16) to the ice guide portion (28) to form a water curtain (36),
A falling ice machine, wherein a projecting rib (40) is formed in a region of the deflector (34) and in a region where water falling from the ice making plates (16, 16) tends to concentrate.   The projecting rib (40) is a distribution rib (40a) positioned upstream of a path where water falling from the ice making plates (16, 16) is concentrated and set at a height at which the water cannot get over. Item 3. A falling ice maker according to Item 1.   The protruding rib (40) is a water stop rib (40b) that is located upstream of a path where the flow rate of water falling from the ice making plates (16, 16) is large, and is set to a height at which the water can get over. The falling ice maker according to claim 1.   The projecting rib (40) is a guide rib (40c) located upstream of a path where water falling from the ice making plates (16, 16) is concentrated and set at a height at which the water can get over. 2. The falling ice machine according to 1. An ice making unit (14) in which a plurality of rows of ice making units (15) comprising an evaporator (EP) sandwiched between a pair of ice making plates (16, 16) are provided;
A water spraying unit (20) disposed above the ice making unit (15), for flowing ice making water or deicing water supplied to each ice making plate (16) to the ice making surface,
An ice making water tank (18) disposed below the ice making section (15) and collecting and storing unfreezed ice making water or deicing water falling from the ice making plates (16, 16).
An ice storage (12) disposed diagonally below the ice making unit (15) and collecting ice blocks (17) falling from the ice making plates (16, 16),
An ice block (17) disposed between the ice making water tank (18) and the lower part of the ice making plates (16, 16) and falling from the ice making plates (16, 16) is guided to the ice storage (12). At the same time, water falling from the ice making plate (16, 16) is dropped into the ice making water tank (18) with an ice guide portion (28),
In a falling ice machine comprising a water supply pipe (21) for circulating the ice making water of the ice making water tank (18) to the water sprinkling section (20) by an ice making water pump (PM),
Branched from the water supply pipe (21) and horizontally disposed obliquely above the ice guide portion (28), the ice making water from the ice making water tank (18) is passed through a number of through holes (42a). A flow-down type ice maker, comprising: a branch pipe (42) that is ejected to form a water curtain (36) above the ice guide section (28).   6. The deicing operation according to claim 5, wherein during the deicing operation, the supply of deicing water to the ice making unit (15) of the row closest to the branch pipe (42) in the plurality of rows of ice making units (15) is stopped. Flow-down ice machine.

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