JP2010190525A - Ice-making water sprinkler of flow-down type ice making machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly supply ice-making water to an ice-making face of an ice-making plate with respect to an ice-making water sprinkler supplying the ice-making water to the ice-making plate of a flow-down type ice making machine. <P>SOLUTION: This ice-making water sprinkler 32 includes a receiving section 33 disposed at an upper part of the ice-making plate 18 and receiving the ice-making water pumped from an ice-making water tank 26, a supply section 34 protrudedly formed at a lower part of the receiving section 33 to face to the ice-making face 22a of the ice-making plate 18, and communicated with the receiving section 33, and a water sprinkling section 35 disposed on a side face of the supply section 34 facing to the ice-making face 22a of the ice-making plate 18 for sprinkling the ice-making water toward the ice-making face 22a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an ice making water sprinkler for supplying ice making water to an ice making plate of a flow down type ice making machine.

  As an ice making machine that automatically manufactures ice blocks, a flow-down type ice making machine that can generate a large amount of ice blocks at low cost is known (for example, see Patent Document 1). As shown in FIG. 9, the flow-down ice making machine 10 includes an ice making unit 60 that generates ice blocks M above an ice storage chamber 14 that is internally defined in a heat insulating box 12.

  As shown in FIG. 10, the ice making unit 60 includes a pair of ice making plates 18 and 18 that are opposed to each other in a substantially vertical posture, and an evaporation tube 24 disposed between the back surfaces of both ice making plates 18 and 18. Each ice making plate 18 is forcibly cooled by circulating the refrigerant through the evaporation pipe 24 during the ice making operation. Each ice making plate 18 is provided with a plurality of protrusions 20 extending in the vertical direction at predetermined intervals in the horizontal direction, and extending vertically on the surface of the ice making plate 18 by adjacent protrusions 20, 20. An ice making surface 22a is defined. The ice making unit 60 is disposed below the pair of ice making plates 18, 18 and is disposed above the ice making water tank 25 for storing ice making water and the pair of ice making plates 18, 18. , 18 with a sprinkler 62 for supplying ice making water and deicing water.

  The water sprinkler 62 includes an ice making water sprinkler 64 that sprinkles ice making water pumped from the ice making water tank 25 through a sprinkling hole 64 a provided on the lower surface, and between the ice making water sprinkler 64 and the top of the ice making plate 18. And a pair of ice making plates located below the ice making water sprinkler 64 and a water sprinkling guide 70 for guiding the ice making water sprinkled from the water sprinkling hole 64a of the ice making water sprinkler 64 to the upper part of each ice making surface 22a. 18 and 18 and a deicing water sprinkler 66 for supplying deicing water to the back surface of the ice making plate 18. In the ice making operation, the ice making unit 60 freezes in the process of flowing down the ice making surface 22a in which the ice making water is cooled, and unfrozen ice making water flowing down from the lower edge of the ice making surface 22a is collected in the ice making water tank 25. Then, it is supplied again to the ice making surface 22 a via the ice making water sprinkler 64 and the water sprinkling guide 70. In the deicing operation, in the ice making unit 60, the ice making plate 18 is warmed by the deicing water supplied from the deicing water sprinkler 66 to assist deicing, and the deicing water flowing down from the ice making plate 18 flows into the ice making water tank 25. It is collected and used as ice making water for the next ice making operation.

  The sprinkler guide 70 is provided corresponding to the ice making surface 22a connected to the covering portion 72 that covers the upper portion of the protruding portion 20 and is placed on the upper end of the protruding portion 20. The guide portion 74 is inclined downward from the protruding end side of the ridge portion 20 toward the ice making surface 22a. Moreover, in the watering guide 70, the inclination lower end of the guide part 74 is set so that it may be located with a slight gap from the corresponding ice making surface 22a. In the sprinkler guide 70, the ice making water sprinkled from the sprinkling hole 64a of the ice making water sprinkler 64 is guided by the guide portion 74, and a slit defined between the inclined lower end of the guide portion 74 and the ice making surface 22a. Ice making water is supplied to the ice making surface 22a through 74a.

Japanese Utility Model Publication No. 7-218066

  As described above, in the ice-falling ice making machine 10, in the ice making operation, the ice making water is cooled by the ice making plate 18, and a part of the ice making water is frozen, and unfrozen ice making water is collected in the ice making water tank 25. The circulation cycle fed again to is repeated. Since the ice making water is gradually cooled by the cooling on the ice making plate 18, ice particles called cotton ice W may be generated in the ice making water at a time when the temperature is lowered to 0 ° C. or lower. . When the ice making water containing the cotton ice W is supplied to the water sprinkler guide 70 or the cotton ice W is generated by the impact sprinkled from the ice making water sprinkler 64 to the guide portion 74, the slit 74a is blocked with the cotton ice W. The ice making water is not sprinkled from the slit 74 a, and the ice making water overflows beyond the upper end edge of the water sprinkling guide 70 to the outside of the sprinkling guide 70. In particular, in the sprinkler guide 70, the ice making water that overflows from the upper end of the covering portion 72 flows down through the ridge portion 20 located below the covering portion 72. That is, in the ice making water tank 25 which is mainly assumed to collect the unfrozen ice making water flowing down from the ice making surface 22a of the ice making plate 18, the ice making water flowing down from the protruding portion 20 protruding from the ice making surface 22a is used. The ice making water cannot be recovered and the ice making water leaks out of the ice making water tank 25. For this reason, in the ice making operation, the ice making water is insufficient and the ice making plate 18 cannot be supplied with the necessary amount of ice making water, so that the ice mass M cannot be grown sufficiently, and deformed ice is generated. There was a problem that the commercial value of the ice mass M was impaired.

  Further, the ice making water that is not collected in the ice making water tank 25 hangs down to the ice storage chamber 14 and other parts located below the ice making unit 60, and in particular, when dripping into the ice storage chamber 14, the ice mass M stored in the ice storage chamber 14. There are drawbacks that cause adverse effects such as melting of ice blocks and blocking of ice blocks M. Furthermore, when ice-making water drops on other members such as electric devices and movable parts, it may cause failure or damage of these members. Moreover, the ice-making water flowing down along the ridges 20 located on both sides of the ice-making plate 18 flows to the evaporation pipe 24 protruding from the side of the ice-making plate 18 and other members provided on the side of the ice-making plate 18. However, the ice making water may freeze in the evaporator tube 24 or the like. At this time, heat exchange between the evaporator tube 24 and the ice making plate 18 is hindered, which may hinder the generation of the ice mass M on the ice making surface 22a, and may cause damage to the evaporator tube 24.

  That is, the present invention has been proposed in order to suitably solve these problems inherent in the ice making water sprinkler of the flow down type ice making machine according to the prior art, and the ice making water is used as the ice making surface of the ice making plate. It aims at providing the ice making water sprinkler of the flow-down type ice making machine which can be supplied appropriately.

In order to overcome the above-mentioned problems and achieve the intended purpose, an ice making water sprinkler of a flow-down type ice making machine according to claim 1 of the present application,
In an ice making water sprinkler of a flow down type ice making machine provided above the ice making plate and supplying ice making water to the ice making surface of the ice making plate,
A receiving portion that is located above the ice making plate and extends across the lateral direction of the ice making plate, and that receives ice making water pumped from an ice making water tank;
A supply part formed below the receiving part so as to be opposed to the ice making surface of the ice making plate, and communicated with the receiving part;
It is provided on a side surface of the supply unit facing the ice making surface of the ice making plate, and has a watering part for sprinkling ice making water toward the ice making surface.
According to the first aspect of the invention, since the ice making water is sprayed directly from the ice making water sprinkler to the ice making surface of the ice making plate, cotton ice is not easily clogged between the ice making water sprinkler and the ice making surface. Inadequate supply of ice making water can be avoided.

In the invention according to claim 2, the supply unit is located between adjacent ridges that are formed at intervals in the horizontal direction of the ice making plate in an upright position and extend in the vertical direction. A plurality of the receiving portions are provided apart from each other in the lateral direction of the ice making plate, and a side surface of each supply portion facing the ice making plate is spaced from the ice making surface defined between adjacent ridge portions. The gist is that
According to the invention which concerns on Claim 2, ice-making water can be appropriately supplied with respect to each of the ice-making surface defined between the protrusions.

The gist of the invention according to claim 3 is that the water sprinkling part is composed of a plurality of through holes that are spaced apart in the lateral direction of the ice making plate.
According to the invention which concerns on Claim 3, it is easy to supply ice making water from the water sprinkling part over the width direction of an ice making surface.

The gist of the invention according to claim 4 is that the water sprinkling part is constituted by a slit provided so as to extend in a lateral direction of the ice making plate in accordance with the ice making surface.
According to the invention which concerns on Claim 4, it is easy to supply ice making water from the water sprinkling part over the width direction of an ice making surface.

  According to the ice making water sprinkler of the flow-down type ice making machine according to the present invention, it is difficult to be affected by cotton ice, and ice making water can be appropriately supplied to the ice making surface of the ice making plate.

It is a sectional side view which shows the principal part of the ice making unit provided with the watering apparatus which concerns on the suitable Example of this invention. It is a front view which shows the ice making unit of an Example. It is a principal part perspective view fractured | ruptured and shown in the state which decomposed | disassembled the watering guide and deicing water watering device of the watering apparatus of an Example. It is a principal part perspective view fractured | ruptured and shown in the state which assembled | attached the watering guide and the deicing water watering device of the watering apparatus of an Example. It is a schematic side view which shows the ice making unit of an Example. It is a schematic perspective view which shows the ice making water tank of an Example. It is a perspective view which partially fractures and shows the ice making water sprinkler of the example 1 of a change. It is a perspective view which partially fractures and shows the ice making water sprinkler of the example 2 of a change. It is side sectional drawing which shows a general flow-down type ice maker. It is a sectional side view which shows the ice making unit provided with the conventional watering apparatus.

  Next, a preferred embodiment of the ice making water sprinkler of the flow down type ice making machine according to the present invention will be described below with reference to the accompanying drawings. For convenience of explanation, the same components as those of the flow-down ice making machine 10 shown in FIG. 9 are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the surface of the ice making plate refers to the side where the ice blocks are generated, and the back surface refers to the side where the evaporation pipe for cooling the ice making plate is provided.

  In the flow-down type ice making machine 10, an ice making unit 16 for generating ice blocks M is disposed above the ice storage chamber 14 defined in the heat insulating box 12, and the ice blocks M discharged from the ice making unit 16 are stored in the ice storage chamber. 14 is stored. As shown in FIG. 1 or FIG. 2, the ice making unit 16 is disposed between a pair of ice making plates 18, 18 opposed to each other with a substantially vertical posture and opposed surfaces of both ice making plates 18, 18. An evaporation pipe 24 and an ice making water tank 26 are provided below the both ice making plates 18 and 18 and store ice making water and collect ice making water flowing down from both ice making plates 18 and 18. The ice making unit 16 of the embodiment includes three pairs of ice making plates (hereinafter, each pair of ice making plates is referred to as an ice making plate set) 18, 18. Further, the ice making unit 16 is provided with a watering device 30 that is disposed above each ice making plate set and supplies ice making water and deicing water to both ice making plates 18, 18.

  The ice making plate 18 is provided between a plurality of projecting ridges 20 extending in the vertical direction and the adjacent projecting ridges 20, 20 provided at intervals in the lateral direction of the ice making plate 18. It is comprised from the ice making part 22 (refer FIG. 1 or FIG. 2). That is, the ice making plate 18 is formed in a zigzag shape in which the mountain-shaped protrusion 20 and the flat ice making portion 22 are continuous in plan view (see FIG. 3). Each protrusion 20 is formed so as to protrude to the side away from the other ice making plate 18, and the surface side of the ice making plate 18 is convex. In addition, the ridge part 20 is arrange | positioned at the both sides of the ice-making board 18, respectively. Here, the pair of ice making plates 18 and 18 have the same configuration, and are installed in a symmetrical relationship with the evaporation tube 24 interposed therebetween.

  In the ice making unit 22, the surface side of the ice making plate 18 becomes an ice making surface 22a on which ice blocks M are generated, and a plurality of ice blocks M are generated separately in the vertical direction on the ice making surface 22a extending in the vertical direction. Is set. The ice making part 22 is formed with protrusions 22b for separating the ice mass M from the ice making surface 22a, corresponding to below the ice making position where the ice mass M is generated on the ice making surface 22a. Each protrusion 22b is formed in a rectangular shape whose bottom surface facing the ice making surface 22a is long in the horizontal direction, and its cross section is formed in a triangular shape whose upper and lower surfaces are hypotenuses as shown in FIG.

  The evaporator tube 24 is formed in a repeating meandering shape, and the linear portion 24a extends laterally as shown in FIG. It is installed between the opposing surfaces of the ice making plates 18 and 18. Further, in the evaporation pipe 24, the straight portion 24a extending apart in the vertical direction of the ice making plate 18 abuts on the back surface of the ice making portion 22 in each ice making plate 18, and corresponds to the contact portion of the straight portion 24a. The ice making surface 22a of the ice making unit 22 is the ice making position where the ice block M is generated. The evaporating pipe 24 constitutes a part of a refrigeration apparatus (not shown), and forcibly cools the ice making section 22 of each ice making plate 18 by heat exchange with the refrigerant circulating in the evaporating pipe 24 during ice making operation. . In addition, hot gas flows through the evaporation pipe 24 during the deicing operation, and the ice making portions 22 of the ice making plates 18 are heated.

  The ice making water tank 26 is formed in a box shape whose upper part is open (see FIG. 6). The ice making water tank 26 is disposed below the ice making plate assembly, is formed to communicate with the receiving portion 50 for receiving ice making water and deicing water flowing down from the ice making plate 18, and an ice making water pump 38. And a reservoir 52 in which the water level detecting means 58 is installed, and an overflow portion 54 provided in the reservoir 52 and defining the upper limit water level HWL of the ice making water (see FIG. 2 or FIG. 5). The ice making water tank 26 has a receiving portion 50 that extends in the horizontal direction of the ice making plate 18, and a storage portion 52 that is continuously provided on one side (continuous side) of the receiving portion 50. It is formed to extend in the direction intersecting the transverse direction with the longitudinal direction. That is, the ice making water tank 26 is substantially T-shaped in plan view with the receiving part 50 and the storage part 52. The ice making water tank 26 is provided with a step portion 26a composed of a portion extending outward at the upper opening edge and a portion erected at the extending end of the extended portion. The heat insulating box 12 is placed on the heat insulating box 12 by being placed on a support piece 12 a that is formed to protrude from the side wall of the heat insulating box 12.

  The receiving portion 50 is formed so that the inner bottom surface 50a is inclined upward from the side connected to the storage portion 52 toward the other side portion (closed side) that is separated in the lateral direction of the ice making plate 18 (FIG. 2). Or see FIG. Thus, the receiving part 50 is formed so as to become deeper toward the storage part 52 side, so that the ice making water and the deicing water received by the receiving part 50 are guided toward the storage part 52 by the inclination of the inner bottom surface 50a. It has become. An ice guide member 28 is placed on the step portion 26 a provided on the upper portion of the receiving portion 50. The ice guide member 28 is formed by juxtaposing a plurality of plate-like bodies (not shown) in which the cross-sections in the opposing direction of both ice making plates 18, 18 are formed in a mountain shape, and is inclined below the ice making plate 18. The ice block M is guided to the ice storage chamber 14 by the surface. In the ice guide member 28, a gap is formed between adjacent plate-like bodies, and uniced ice making water, deicing water and ice blocks M are separated by the ice guide member 28, and only ice making water or the like is received. Collected by the unit 50.

  The storage portion 52 is biased to one side (inflow side) and connected to the receiving portion 50, and overflows to the other side (discharge side) that is spaced apart in the opposing direction of the inflow side and the ice making plate assembly. A portion 54 is provided (see FIG. 6). The inner bottom surfaces 52a and 52b of the storage part 52 are formed so as to be lower as a whole than the inner bottom surface 50a on the connection side that is the lower inclined end of the receiving part 50, and the inner bottom surface 52a on the inflow side is compared with the inner bottom surface 52b on the discharge side. It is formed so as to increase in a step shape (see FIG. 5). That is, the storage part 52 is formed so that the inflow side is shallower than the discharge side, and in the storage part 52 of the embodiment, the storage part 52 is formed so as to be shallower up to the connection part with the receiving part 50, while the ice making water pump 38. And the part where the water level detection means 58 is installed is deepened.

  The overflow portion 54 has a discharge port 54a that opens upward at the inner upper portion of the storage portion 52 and communicates with the outside of the ice making water tank 26. The overflow portion 54 discharges to a portion facing the outside of the ice making water tank 26 in the overflow portion 54. A discharge pipe 56 is connected to the outlet 54a to discharge the ice making residual water and surplus water discharged from the discharge port 54a (see FIG. 2). In the overflow part 54, the height of the discharge port 54 a becomes the upper limit water level HWL of ice making water that can be stored in the ice making water tank 26, and the ice making water tank 26 is set lower than the step part 26 a of the receiving part 50.

  The said water level detection means 58 is located in the discharge part of the storage part 50, and is installed in the inside of the storage part 50. In the Example, it is installed in the overflow part 54 along with the horizontal direction of the ice-making board 18 (refer FIG. 2). ). The water level detection means 58 includes a float 58a that moves up and down in accordance with the water level of the storage unit 52, and the float 58a is detected by a water level switch (not shown) provided on the bottom side of the storage unit 52. The water level LWL is determined. The lower limit water level LWL of the ice making water tank 26 is set to be higher than the inner bottom surface 52a on the inflow side of the storage unit 52 and lower than the inner bottom surface 50a on the closing side of the receiving unit 50, and the ice making water is received at the lower limit water level LWL. The entire portion 50 is not left (see FIG. 6).

  The ice making water pump 38 is located on the discharge side of the storage unit 52 and installed inside the storage unit 52, and in the embodiment is installed side by side on the inflow side of the water level detection means 58 (see FIG. 5). The ice making water pump 38 is connected to an ice making water pipe 36 connected to the ice making water sprinkler 32 of the water sprinkler 30. By driving the ice making water pump 38, the suction part 38 a is moved from the storage part 52 of the ice making water tank 26. The ice making water sucked in through the water is pumped to the ice making water sprinkler 32. The suction part 38a of the ice making water pump 38 is disposed at a position lower than the lower limit water level LWL. In the ice making water pipe 36, a drain pipe 37 is branched in the middle of the ice making water sprinkler 32, and the discharge end of the drain pipe 37 is located above the discharge port 54a. The ice making unit 16 operates a switching valve 39 inserted in the ice making water pipe 36 and the drain pipe 37, so that the ice making water path pumped by the ice making water pump 38 is routed to the ice making water sprinkler 32 or the overflow unit 54. It can be changed to either.

  The watering device 30 is provided corresponding to each ice making plate set (see FIG. 5). The water sprinkler 30 includes an ice making water sprinkler 32 that sprinkles ice making water pumped from the ice making water tank 26 toward the ice making plate 18, and a pair of ice making plates 18, 18 positioned below the ice making water sprinkler 32. A deicing water sprinkler 40 that is installed in between and supplies deicing water to the back surface of the ice making plate 18 is provided (see FIG. 3 or FIG. 4). That is, the watering device 30 of the embodiment is configured to directly spray the ice making water from the ice making water sprinkler 32 to the ice making surface 22a of the ice making plate 18, and like the watering device 62 described in the conventional example, the watering guide 70 Do not need.

  The ice making water sprinkler 32 is installed on the ice making plate 18. The ice making water sprinkler 32 is provided with a receiving portion 33 disposed above the ice making plate 18 and so as to protrude below the receiving portion 33, and at least a part of the side surface is relative to the ice making surface 22 a of the ice making plate 18. The supply part 34 formed to do so and a watering part 35 provided on the side surface of the supply part 34 facing the ice making surface 22a are provided (see FIG. 3 or FIG. 4). The receiving portion 33 is a long hollow cylindrical member (in the embodiment, a rectangular tube shape), and is installed above the ice making plates 18, 18 with the longitudinal direction thereof being along the lateral direction of the ice making plate 18. (See FIG. 1 or FIG. 2). The receiving portion 33 is formed so as to extend over the entire lateral direction of the ice making plate 18. The receiving portion 33 of the embodiment is formed so that the width in the facing direction of the pair of ice making plates 18 and 18 is slightly larger than the width between the projecting ends of the ridges 20 and 20 in the ice making plates 18 and 18 facing each other. Yes. An ice making water pipe 36 connected to an ice making water pump 38 is connected to one side of the receiving portion 33, and receives ice making water pumped from the ice making water tank 26 by the ice making water pump 38 during ice making operation. ing.

  The supply unit 34 is provided below the receiving unit 33 so as to be opposed to the ice making surface 22a of the ice making plate 18, and the supply unit 34 is provided in an ice making water circulation space defined inside the receiving unit 33. The ice making water distribution space defined inside is configured to communicate (see FIG. 3). The supply unit 34 bulges downward from the lower surface of the receiving unit 33, and one side surface of the supply unit 34 faces the upper part of the ice making plate 18. Further, the ice making water sprinkler 32 has two rows of supply parts 34, 34 corresponding to the ice making plates 18, 18 provided below the receiving part 33 so as to be separated from each other in the facing direction of the pair of ice making plates 18, 18. It has been. Further, in the ice making water sprinkler 32, the supply portions 34 are arranged on the adjacent protrusions 20, 20 so as to correspond to the ice making portions 22 defined by the adjacent protrusions 20, 20 on each ice making plate 18. Arranged between. That is, on the lower surface of the receiving portion 33, a plurality of supply portions 34 corresponding to the ice making portions 22 are provided in the lateral direction of the ice making plate 18 so as to be symmetrical with respect to the pair of ice making plates 18, 18. It has been. And each supply part 34 is arrange | positioned at intervals from the corresponding ice making surface 22a in the side surface which opposes the ice making surface 22a.

  The water sprinkling part 35 is provided on the side surface of each supply part 34 that faces the ice making surface 22 a and communicates with the ice making water circulation space of the supply part 34. The water sprinkling part 35 of the embodiment is a through hole formed on the side surface of the supply part 34 that faces the ice making surface 22 a, and the water sprinkling part 35 is located in the center of the supply part 34 in the lateral direction of the ice making plate 18. Are formed through. The water sprinkling unit 35 sprinkles the ice making water which is pumped by the ice making water pump 38 and arrives through the ice making water circulation space of the receiving unit 33 and the supply unit 34 toward the ice making surface 22a. As described above, the ice making water sprinkler 32 is disposed between the supply units 34 and 34 that are spaced in the opposing direction of the pair of ice making plates 18 and 18, and the upper portions of the pair of ice making plates 18 and 18 and the ice making plates 18. , 18 is accommodated in the upper part of the ice making plate assembly by accommodating the deicing water sprinkler 40 attached to the upper part of the ice making plate assembly. It is done.

  The deicing water sprinkler 40 is located below the ice making water sprinkler 32 and is disposed on the upper back side of the ice making plate 18 (see FIG. 1). The deicing water sprinkler 40 includes a main body portion 42 having a plurality of supply holes 44 and a flange portion 46 provided on a side surface of the main body portion 42 facing the ice making plate 18 (see FIG. 3). . In the deicing water sprinkler 40 according to the embodiment, the flange portions 46 and 46 are formed so as to protrude in symmetrical positions on the opposite side surfaces of the main body portion 42 corresponding to each of the pair of ice making plates 18 and 18 that are opposed to each other. Has been. The main body 42 is a long hollow cylindrical body, and is installed between the pair of ice making plates 18 and 18 so as to extend in the lateral direction of the ice making plate 18. In addition, a deicing water pipe 48 connected to an external water source such as a water supply via a water supply valve WV is connected to one side of the main body 42 and is spaced apart in the longitudinal direction of the main body 42 by opening and closing the water supply valve WV. The deicing water can be supplied to the rear surface of the ice making plate 18 through the supply hole 44 or stopped.

  Each flange portion 46 is a plate-like portion protruding and formed on the outer surface along the longitudinal direction of the main body portion 42 and is provided so as to extend over the entire longitudinal direction of the main body portion 42 (see FIG. 3). ). The flange portion 46 is provided at an intermediate portion in the vertical direction on the outer surface of the main body portion 42, and is disposed at a portion biased upward in the embodiment. Here, as for the main-body part 42, while the site | part above both flange parts 46 and 46 is formed in semicircle shape, the site | part below both flange parts 46 and 46 is formed in the substantially rectangular shape.

  The deicing water sprinkler 40 is fitted between the pair of ice making plates 18, 18 at a position below both flanges 46, 46, and the both flange portions 46, 46 are placed on the upper ends of the corresponding ice making plates 18. (See FIG. 4). Further, the portion of the main body 42 above the flange portions 46, 46 fits into a groove 33 a that is recessed in accordance with the portion of the receiving portion 33 in the ice making water sprinkler 32 and is mounted on the deicing water sprinkler 40. The ice making water sprinkler 32 to be placed can be positioned (see FIG. 1 or FIG. 4).

(Effects of Example)
Next, the effect | action of the watering apparatus 30 which concerns on an Example is demonstrated. In the ice making operation, the ice making water pump 38 is driven in a state where the switching valves 39 and 39 are switched to the ice making water sprinkler 32 side, so that the ice making water stored in the ice making water tank 26 passes through the ice making water pipe 36. And supplied to the ice making water sprinkler 32. Here, the ice making water tank 26 stores the ice making water up to the upper limit water level HWL at the start of the ice making operation. The ice making water enters the receiving portion 33 of the ice making water sprinkler 32, flows from the receiving portion 33 into each supply portion 34, and is sprinkled from the water sprinkling portion 35 provided in the supplying portion 34 to the corresponding ice making surface 22a. The ice making water flows down the ice making surface 22a of the ice making plate 18 in a film shape, and gradually freezes around the ice making position cooled by heat exchange with the refrigerant flowing through the evaporator tube 24. Then, the ice making water flowing down from both ice making plates 18, 18 without freezing flows down into the receiving part 50 of the ice making water tank 26, flows into the storing part 52 from the receiving part 50, and is made by the ice making water pump 38. 18 and 18 are supplied again. In the ice making water tank 26, the inner bottom surface 50a of the receiving portion 50 is inclined downward toward the storage portion 52, and the inner bottom surface 52a on the inflow side of the storage portion 52 is inclined downward toward the discharge side. Ice making water is guided toward a suction portion 38a of an ice making water pump 38 provided on the discharge side of 52.

  Since the water sprinkler 30 is configured to sprinkle ice making water directly from the water sprinkling part 35 of the ice making water sprinkler 32 to the ice making surface 22a, the water sprinkler guide for guiding the ice making water described in the conventional example toward the ice making surface 22a. Therefore, the configuration can be simplified. Moreover, since the flange part 46 of the deicing water sprinkler 40 is supported by the upper end of the ice-making board 18, and the upper part of the ice-making board 18 is covered by this flange part 46, the water sprinkler 30 sprinkles the ice making surface 22a. It is possible to prevent water from entering the back side of the ice making plate 18. Furthermore, in the conventional watering guide, in order to flow down the ice making water guided along the inclination of the guide portion to the ice making surface, the gap between the inclined lower end of the guide portion and the ice making surface is narrowed. In some cases, the water spray device 30 of the embodiment does not have the water sprinkler guide itself as described above, and therefore there is no portion where the cotton ice is clogged with the ice making surface 22a. That is, in the water sprinkler 30, ice making water is jetted and supplied from the water sprinkling part 35 under the pressure of the ice making water pump 38, so that the side surface of the supply part 34 that faces the ice making surface 22a is the guide part in the conventional water sprinkler guide. Compared with the lower end of the slope, the distance from the ice making surface 22a can be increased.

  Furthermore, it has been found that cotton ice is generated when the supercooled ice-making water is subjected to some impact. In the ice making unit 16, cotton ice is generated by the impact of spraying ice making water on the ice making surface 22a from the water sprinkling part 35, but the cotton ice generated at the moment of hitting the ice making surface 22a is washed away by the subsequent ice making water. Therefore, the cotton ice can be prevented from staying at a specific site, and the flow of ice making water can be prevented from being inhibited by the cotton ice. Also, when the ice making water is pumped to the ice making water pump 38 and circulates inside the ice making water tank 26, the ice making water pipe 36 and the ice making water sprinkler 32, the water is sprayed from the water sprinkling part 35 and hits the ice making surface 22a. Therefore, the part where the cotton ice is generated can be squeezed to the upper part of the ice making surface 22a, and adverse effects due to the cotton ice in other parts can be prevented.

  As described above, according to the ice making water sprinkler 32 of the embodiment, the ice making water can appropriately flow down to the ice making surface 22a in the ice making operation, and the ice making surface 22a caused by the lack of ice making water due to the outflow of the ice making water to the outside. It is possible to prevent the growth failure of the ice mass M at Further, since the ice making water flowing out to the outside without being collected in the ice making water tank 26 can be suppressed, the ice blocks M stored in the ice storage chamber 14 located below the ice making unit 16, electric parts, movable parts, etc. It can suppress that ice making water dripping to another member. That is, the ice block M in the ice storage chamber 14 is not melted or the ice blocks are joined and blocked due to the ice making water, and it is possible to avoid impairing the commercial value of the ice block M. Moreover, since the failure and damage of the other member which ice making water adheres or ice making water does not plan to freeze can be suppressed, the lifetime of these members can be improved.

In the ice making operation, the ice making water pumped by the ice making water pump 38 is supplied to the receiving portion 33 of the ice making water sprinkler 32. It is led to each supply part 34 which communicates. The ice making water hits the inner wall intersecting with the inflow direction of the ice making water in the supply unit 34 and is further buffered and guided to the water sprinkling unit 35. That is, in the ice making water circulation space of the supply unit 34, the flow velocity difference and the pressure difference of the ice making water are reduced, and the ice making water can be sprayed in a balanced manner from the water spraying unit 35 provided in each supply unit 34. In addition, the ice making water sprinkler 32 is configured to receive the pressure-fed ice making water at the receiving portion 33 and introduce it into the supplying portion 34, thereby suppressing the influence of the flow rate and pressure of the ice making water in the supplying portion 34. The amount of ice making water supplied from the sprinkler 35 corresponding to 22a can be made uniform. On the ice making plate 18, the ice grows stably and evenly on each ice making surface 22 a, and the obtained ice also has a uniform size, and generation of deformed ice or cloudy ice due to excess or deficiency of the ice making water is generated. Can be suppressed. Moreover, since the ice making unit 16 can uniformly make ice on the entire ice making surface 22a of each ice making plate 22, the cooling efficiency and the deicing efficiency are good, and the ice making capacity can be improved.
Further, since the flow rate of ice making water is suppressed, the ice making water does not flow obliquely from the respective water sprinkling portions 35 toward the lateral direction of the ice making plate 18, and the ice making water is scattered outside the ice making unit 16. Inconveniences such as water shortage and melting of ice blocks M stored in the ice storage chamber 14 can be avoided.

  The ice making unit 16 performs the ice making operation when the ice making operation proceeds and the ice making water in the ice making water tank 26 decreases as the ice block M is generated on the ice making surface 22a of the ice making plate 18, and the water level detecting means 58 detects the lower limit water level LWL. And deicing operation or draining operation is started. In the deicing operation, deicing water is supplied from the deicing water sprinkler 40, and hot gas is circulated through the evaporation pipe 24 to achieve deicing from the ice making surface 22 a. In the drainage operation, the switching valve 39 is switched to the drainage pipe 37 side to drive the ice making water pump 38 and the ice making residual water is discharged to the outside through the overflow portion 54. The drainage operation may be performed every cycle, but may be performed every plural cycles, such as once every two cycles or once every five cycles. Here, since the depth of the inflow side of the receiving part 50 and the storage part 52 is formed shallower than the discharge side of the storage part 52, the ice making water tank 26 is the ice making water (ice making residual water) remaining at the lower limit water level LWL. The amount can be reduced. Since the ice making unit 16 has a small amount of ice making water remaining at the lower limit water level LWL, the amount of ice making water to be cooled to the freezing temperature in the ice making operation can be reduced and the ice making efficiency can be improved, and the amount discharged in the drain operation is small. Time can be shortened. In the initial cycle when the flow-down type ice making machine 10 is started up (cycle in which the power switch is turned on while there is no ice making water in the ice making water tank 26), the ice removing operation is started, but the ice making water tank 26 reaches the upper limit water level HWL. In order to save the ice making water, it is controlled to sprinkle from the deicing water sprinkler 40 for a minimum time (for example, 2 minutes), and the necessary water supply amount to the upper limit water level HWL in the ice making water tank 26 is reduced. The time required for water supply is shortened, and more efficient ice making becomes possible.

(Example of change)
The present invention is not limited to the configuration of the above-described embodiment, and can be modified as follows.
(1) In the embodiment, the paired ice making plates are described as being arranged opposite to each other with the evaporation pipe interposed therebetween. However, for example, the evaporation pipes may be arranged in a meandering manner on the back surface of one ice making plate.
(2) In the embodiment, the water sprinkling part is constituted by one through hole provided at the center of the side surface of the supply part, but it may be constituted by a plurality of through holes. For example, in the ice making water sprinkler 80 of the modification 1 shown in FIG. 7, the water sprinkling part 82 is comprised from several (three) through-holes 82a arranged in the horizontal direction of the ice making board 18. As shown in FIG. According to the water sprinkling part 82 of the first modification, since the plurality of through holes 82a are arranged in the lateral direction of the ice making plate 18, it is easy to supply ice making water over the entire width of the ice making surface 22a.
(3) Moreover, the shape of the through-hole of the watering part is not limited to a circle, and may be a polygon such as a quadrangle. For example, in the ice making water sprinkler 84 of the modification 2 shown in FIG. 8, the water sprinkling part 86 is comprised from the slit extended in the horizontal direction of the ice making board 18 according to the ice making surface 22a. According to the water sprinkling part 86 of the modified example 2, the ice making water can be easily supplied over the entire width of the ice making surface 22a by the slit extending in the lateral direction of the ice making plate 18. In addition, in the ice making water sprinklers 80 and 84 of FIG. 7 and FIG. 8, the same code | symbol is attached | subjected about the structure same as the structure of the ice making water sprinkler 32 of an Example.

18 ice making plate, 20 ridge, 22a ice making surface, 26 ice making water tank,
33 receiving part, 34 supply part, 35 watering part, 82 watering part, 82a through-hole,
86 Watering part

Claims (4)

In an ice making water sprinkler of a falling ice making machine that is provided above the ice making plate (18) and supplies ice making water to the ice making surface (22a) of the ice making plate (18),
A receiving part (33) for receiving the ice-making water pumped from the ice-making water tank (26), which is provided above the ice-making board (18) and extends in the lateral direction of the ice-making board (18). When,
A supply section (34) formed below the receiving section (33) so as to be opposed to the ice making surface (22a) of the ice making plate (18), and communicated with the receiving section (33),
A water sprinkling part (35, 82, 86) provided on the side surface of the supply part (34) facing the ice making surface (22a) of the ice making plate (18) and spraying ice making water toward the ice making surface (22a). An ice making water sprinkler of a flow-down type ice making machine characterized by comprising:   The supply section (34) is positioned between adjacent protrusions (20, 20) that are formed at intervals in the lateral direction of the ice making plate (18) in an upright position and extend in the vertical direction. The ice making plate (18) is provided in a plurality in the receiving portion (33) so as to be separated from each other in the lateral direction, and the side facing the ice making plate (18) of each supply portion (34) has an adjacent ridge portion ( The ice-making water sprinkler of a flow-down type ice making machine according to claim 1, wherein the ice making water sprayer is disposed at a distance from the ice making surface (22a) defined between 20, 20).   The water sprinkler (82) is composed of a plurality of through holes (82a) spaced apart in the lateral direction of the ice making plate (18). .   The flow-down type ice maker according to claim 1 or 2, wherein the water sprinkling part (86) is constituted by a slit provided so as to extend in a lateral direction of the ice making plate (18) in accordance with the ice making surface (22a). Ice water sprinkler.

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