JPH10197114A - Vertical type ice making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical type ice making machine in which white-colored ice is not produced at the central part of it and a lacked ice is not produced at the corner part of it. SOLUTION: This ice making machine comprises an ice making chamber in which a plurality of ice making small compartments are arranged in a grid- like manner and installed in a vertical orientation; a water pan 109 for opening or closing an opening side surface of the ice making chamber; an ice making water passage 121 formed in the water pan 109; a similar pressure chamber 119; a water injection port 107 for supplying ice making water from the ice making water passage 121 to the ice making small compartments; and a return port 171 for returning the ice making water supplied to the ice making small compartments into a water returning passage in the water pan 109. In this case, at least one returning port 171 is arranged below the water injection port 107 so as to prevent ice from being colored white. In addition, the returning port 172 is arranged above the water injection port 107 so as to prevent a lack of ice from being produced. More preferably, the returning ports 171, 172 are arranged just below and just above the water injection port 107, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical ice maker having a plurality of ice making chambers arranged in a grid on a substantially vertical surface and having an ice making chamber opened horizontally. It is.

[0002]

2. Description of the Related Art A vertical ice maker shown in FIG. 9 reduces the "folds" connecting the ice pieces to each other and also forms "concaves (conical space portions)" formed on the surface of each ice piece. In order to achieve this object, the ice making machine arranges the ice making chambers 5 in a grid on a substantially vertical plane, and opens the ice making chambers 5 in the lateral direction. Ice making room 1 and an external wall 11 for opening and closing the opening surface of the ice making room 1
Water tray 9 provided with an ice making channel 21 formed in the water tray 9
And the pressure chamber 19, an ice making water tank 61 disposed below the ice making chamber 1, a circulation pump 67 for guiding the ice making water in the ice making water tank 61 to the pressure chamber 19, and the like.

The ice making chamber 1 has a plurality of ice making chambers 5 which are defined in a substantially square shape when viewed from the opening side by partition plates 3a and 3b extending in a grid shape in the vertical and horizontal directions. Partition plates 3a, 3b
Of these, the horizontal partition plate 3b is inclined downward by a predetermined angle from the horizontal direction from the back side of the ice making chamber 5 toward the opening side. Thereby, at the time of the deicing process, the ice in each ice making chamber 5 is easily separated by its own weight and falls into an ice storage (not shown). On the other hand, as shown in the drawing, one fountain port 7 is provided for one ice making chamber 5 on the outer wall 11 of the water tray 9 which closes the whole opening of each ice making chamber 5 when it is in the closed position. The ice making water in the ice making water tank 61 is sent by a circulation pump 67 through a water supply pipe 69 to a communication port 70 of a pressure chamber 19 in an upper portion of the water tray 9, and is supplied to the pressure chamber 19. Supplied to The ice making channel 21 is connected to the lower side of the pressure chamber 19,
As shown in FIG. 11, it is formed in the water tray 9 using the outer wall 11. The ice making water supplied to the pressure chamber 19 is supplied to the ice making water passage 21.
Flows down, and is jetted from each fountain port 7 and supplied to each ice making chamber 5. Then, in the ice making process, the low-pressure refrigerant is supplied to the evaporator 35 disposed on the back of the ice making room 1 and the ice making room 5 is made.
The ice making water is successively frozen from the wall surface of the ice making machine, and ice is made concentrically toward the center of the ice making chamber 5.

FIG. 10 is a sectional view taken along line XX in FIG.
FIG. 11 is a sectional view taken along the line YY in FIG. 10, and FIG. 12 is an enlarged sectional view around the ice making chamber 5.
In the figure, two-dot chain lines 3a and 3b show a vertical partition plate and a horizontal partition plate of the ice making chamber 1, respectively.
Two return ports 71 are formed in the outer wall 11 at the same height position on the left and right of the fountain port 7 outside the ice making water channel 21 with respect to each of the ice making chambers 5 partitioned by the ice making chambers 3b. Is returned to the return water channel 42 through these return ports 71 and returned to the ice making water tank 61 below. In this prior art, as shown in FIG. 11, the ice making water channel 21 has the cylindrical body 40 and the inner wall 39 of the water tray 9 integrated with each other, but there is also a case where the inner wall 39 is omitted.

[0005]

In the conventional vertical ice maker described above, when the ice grown concentrically toward the center of the ice making chamber 5 closes the return port 71 as shown in FIGS.
The ice making is completed with the conical space 75 left around the fountain port 7, the circulation pump 67 is stopped, and hot gas flows into the evaporator 35. However, since the return port 71 is provided at the same height position on the left and right of the fountain port 7 (see FIG. 10 and FIG. 13), the portion below the return port 71 in the conical space 75 has no freezing water. The uniced water was frozen by the cold heat capacity of the ice making chamber 5 after the stop, resulting in cloudy ice 73 at the lower portion of the return port 71 as shown in FIGS.

In the ice making chamber 5, air holes 8 are provided.
(See FIG. 12) and a gap 10 between the ice making chamber 1 and the water tray 9.
When (see FIG. 12) is closed, the ice making water jetted from the fountain port 7 fills the return port 71 and closes the return port 71, so that the air that has lost its escape in the upper part on the back side of the ice making chamber 5 accumulates. This part was ice-free 74. In particular, as described above, in the conventional vertical ice maker, the pressure chamber 19 is disposed horizontally above the water tray 9, and is connected to the ice making water channel 21 which is vertically connected to the pressure chamber 19. Since the ice making water is supplied to the ice making chamber 5 through the fountain port 7, the water pressure in the ice making water passage 21 in the upper part is lower than the water pressure in the ice making water passage 21 in the lower part. Because the fountain power of the part was weak, the ice making water was not filled in the ice making small chamber 5, and the ice free 74 was easily generated. For example, when the voltage becomes low in the 50 cycle area, the discharge pressure of the circulation pump 67 decreases, and there is a problem that the ice breakage 74 is particularly likely to occur in the upper ice making chamber 5. Such cloudy ice 73 and chipped ice 74 are problematic in that the quality of the finished ice is reduced and the commercial value is reduced. Therefore, in the conventional vertical ice making machine, measures have been taken to increase the output of the circulation pump 67 to increase the discharge pressure, and to spread the ice making water to the corners of the ice making chamber 5 at the upper part by the high pressure. As a countermeasure, not only does the circulation pump 67 become large in size due to high output, the ice making machine itself becomes large in size, and a large installation space is required, but also the manufacturing cost and operation cost (electricity fee) of the device increase. There was a disadvantage.

The present invention has been made by paying attention to such problems existing in the prior art. It is an object of the present invention to provide a vertical ice maker in which cloudy ice is not generated at the center of ice and ice is not formed at corners of ice.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of ice making compartments are arranged in a grid on a substantially vertical surface, and the ice making compartments are opened laterally. An ice making chamber, an ice tray provided with an external wall for opening and closing the opening side of the ice making chamber, an ice making water channel formed in the water tray using the external wall of the water making dish, and an ice making water path. A pressure chamber connected to one side surface for diverting the ice making water from the ice making tank to the ice making water passage, a fountain port formed in the outer wall for supplying ice making water from the ice making water passage to the ice making small room, and an ice making small room. And a return opening formed in the outer wall for returning the ice making water supplied to the return water passage in the water tray, wherein at least one return opening is provided below the fountain opening. It is characterized by having.

Therefore, in the vertical ice maker constructed as described above, ice making water is supplied from the fountain port to the ice making chamber,
The ice making is performed while growing the ice concentrically toward the center of the ice making chamber, while the uniced ice making water is returned from the return channel from the return port. Then, when the grown ice closes the return port, ice making is completed in a state where a conical space is left around the fountain port, but since the return port is provided below the fountain port at this time, The amount of unfreezing water remaining in the conical space is reduced or completely eliminated. Therefore, the generation of cloudy ice is reduced or prevented.

The invention according to claim 2 is characterized in that a plurality of the return ports are provided, some return ports are provided above the fountain port, and the remaining return ports are provided below the fountain port.

With this configuration, since there is a return port above the fountain port, the air holes formed in the upper part of the ice making chamber and the gap between the ice making chamber and the water tray are closed during ice making. Even in this case, since the air in the ice making chamber is discharged from the return port, ice chips are less likely to be formed. Further, since the return port is provided below the fountain port, the generation of cloudy ice is reduced or prevented as described above.

According to a third aspect of the present invention, the pressure chamber is provided in a vertical direction, the ice making channel is provided in a horizontal direction, and a return port is provided directly above and below the fountain port. I do.

[0013] With this configuration, when the ice making is completed, return ports are provided at the uppermost portion and the lower portion of the conical space formed around the fountain port. Thus, the discharge of non-freezing water remaining in the ice making chamber and the discharge of air in the ice making chamber during ice making can be more reliably performed, and the generation of cloudy ice and ice icing can be more reliably reduced or prevented.

According to a fourth aspect of the present invention, the pressure chamber is provided in a vertical direction, the ice making water channel is provided in a horizontal direction, and an ice making water communication port is provided at an intermediate height of the pressure chamber. It is characterized by the following.

With this configuration, the difference between the fountain pressure of the ice making water at the upper fountain and the fountain at the lower part is reduced, and the supply of the ice making water in the upper ice making chamber is sufficiently performed. Ice is more reliably prevented.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is embodied in a vertical ice maker will be described below with reference to FIGS. The vertical ice maker of the present invention shown in FIG. 1 and FIG.
Mainly, an ice-making chamber 101 attached to the frame and arranged in the vertical direction, an opening of the ice-making chamber 101 is opened and closed by an outer wall 111 of the water tray 109, and a water tray 109 is disposed opposite to the opening. A pressure chamber 119 and an ice making channel 121 formed in the water tray 109, a water tray driving mechanism located below the ice making chamber 101 and tilting the water tray 109;
An ice making water tank 16 arranged below the water tray driving mechanism.
1, an ice storage (not shown) disposed near the ice making water tank 161; The detailed structure of each is as described below.

In FIG. 1, the ice making chamber 101 is provided with a bolt 13
It is attached to the frame 133 by an appropriate fastening means such as 1. The ice making chamber 101 has a plurality of small ice making chambers 105 which are defined in a substantially square shape by grid-like vertical and horizontal partition plates 103a and 103b which intersect at right angles.
Among the partition plates 103a and 103b, the partition plate 103b extending in the horizontal direction is inclined downward from the horizontal direction from the back side of the ice making chamber 105 toward the opening side. Also,
An evaporator 135 is attached in contact with the back side of the wall surface, that is, the wall surface 101c opposite to the opening of the ice making chamber 101. The evaporator 135 is one of components constituting a refrigeration circuit of a general ice maker. Although not shown, an upper end thereof is led out from an expansion valve such as a capillary tube, and a lower end thereof communicates with the compressor. doing.

At the opening side of the ice making chamber 105, a water tray 109 is provided.
Is tiltably disposed between a closed position during the ice making process (FIG. 1) and an open position during the deicing process (FIG. 2). Water dish 1
09 is screwed to a mounting plate 134 at an upper portion thereof, and the mounting plate 134 is
The water tray 109 is rotatably supported by a pivot 33. The rotatable angle of the water tray 109 depends on the operation and length of a cam lever and the like described later and the ice making chamber 10.
1 is limited by contact with the outer frame plates 101a and 101b. Inside the water tray 109, a pressure chamber 119 is provided in a vertical direction on one side thereof, and an ice making water passage 121 is horizontally connected to the pressure chamber 119 so as to be connected to the pressure chamber 119. One fountain port 107 is provided for one ice making chamber 105 on the outer wall 111 of the water tray 109 which closes each opening of the ice making chamber 105 in the ice making process at the closed position. And
At least one, in this embodiment, two return ports 171 and 172 (see FIGS. 3, 4 and 5) are formed around one fountain port 107. The outer wall 111 at the closed position is in contact with the outer frame plates 101a and 101b that define the ice making chamber 101, but the ice making chamber 101
The partition plates 103a and 103b extending in the vertical and horizontal directions are separated from each other, and a gap 110 (see FIG. 4) is formed between the two. That is, the partition plate 10 extending in the vertical and horizontal directions
3a and 103b are shorter than the outer frame plates 101a and 101b. Accordingly, each ice making chamber 105 is separated from the outer wall 111 by the gap 110 formed between the vertical partition plate 103a and the horizontal partition plate 103b.
Ice making water can enter and exit. In addition, water dish 109
Has a water tray cover 141 on the opposite side of the outer wall 111, and the inside thereof forms a return water passage 142. The lower portion of the return water channel 142 has a shape like a spout of a “kettle” as seen in FIG. 1, and the tip is directed to the ice making water tank 161.

As can be understood from FIG. 4, one ice making water channel 121 is formed by an outer wall 111 and a single cylindrical wall 140 extending horizontally from the pressure chamber 119. Then, as understood from FIGS.
At the positions directly above and below the fountain 107 on both sides of the fountain 40, the return ports 171 and 172 are
It is provided so as to open to the return water passage 142 inside. Further, as shown in FIG. 4, an air vent 108 for evacuating the air during the ice making operation to the outside is formed in the wall surface 101c located at the back of each ice making chamber 105. Further, a cleaning port 127 is provided at an end of the ice making water channel 121 opposite to the pressure chamber 119. When the cleaning port 127 is disposed in such a horizontal direction, there is an advantage that the ice making water channel 121 can be easily cleaned.

Referring to FIG. 1 and FIG. 2, a mechanism for operating the water tray 109 is provided below the ice making chamber 101. First, a motor (drive device) is provided at a required position below the ice making chamber 101, and a cam lever 147 has a base end integrated with the motor shaft 145 on a motor shaft 145 as an output shaft of the motor. It is fixed and attached to. That is, it is attached so as to be tilted by the same angle as the rotation angle of the motor shaft 145.

A lever piece 149 is integrally fixed to the cam lever 147. A switch 151 provided on the frame 133 is provided on the tilt locus of the lever piece 149. A spring holder 153 is provided at the tip of the cam lever 147, and a spring 155 is provided.
Has one end engaged with a spring holder 153 and the other end engaged with a spring holder 157 provided below the water tray 109. Accordingly, when the water tray 109 is closed during ice making, the spring 155 is in an extended state, and the water tray 10 is closed.
Numeral 9 closes the opening of the ice making chamber 105 by its elastic force (tensile force). An ice making water tank 161 for collecting and storing ice making water is provided below the water tray 109. One end of a water supply pipe 163 faces near the upper edge of the ice making water tank 161, and an electromagnetic valve 165 is connected to the other end. The water supply source is located on the opposite side of the water supply pipe 163 with respect to the solenoid valve 165. The circulation pump 167 disposed below the ice making water tank 161 has its suction side connected to the ice making water tank 1.
61, and the discharge side thereof is connected to a water pipe 169.
It is connected to the lower end of. Further, the water pipe 169 is connected to a communication port 170 (see FIG. 3) provided at the center of the side wall of the pressure chamber 119 via an upper part of the water tray 109, and is connected to the pressure chamber 119 through the water pipe 169. Is supplied with ice making water.

Next, the operation of the vertical ice maker of the present invention will be described. First, water supply to the ice making water tank 161 in the vertical ice maker according to the embodiment of the present invention will be described. When the ice making process is completed and the deicing process is started, the water tray 109
Pivots to the open position as shown in FIG. When the water tray 109 is fully opened in this way, the solenoid valve 165 opens, and tap water is supplied from the tip of the water supply pipe 163 into the ice making water tank 161 via the solenoid valve 165. The solenoid valve 165 has a 90
The valve is maintained in the open state for a second, then the valve is closed and the water supply is stopped once. When the ice in the ice making chamber 101 is separated by the progress of the deicing process, the temperature of the ice making chamber rises.
1 detects that the temperature has risen as de-icing is completed, and the water tray 109 rotates from the inclined state shown in FIG. 2, ie, the open position, to the vertical state shown in FIG. 1, ie, the closed position. Enters the ice making process. When the water tray 109 reaches the closed position, the ice making machine enters the ice making process as described above, but the solenoid valve 165 keeps the valve opened further and closes 15 seconds after the water tray is completely closed. .

In the ice making process, referring to FIG.
The ice making water 159 in the ice making water tank 161 is supplied to the circulation pump 1
The water is discharged into the water pipe 169 by the operation of the valve 67, rises the water pipe 169, and is guided to the pressure chamber 119 through the communication port 170 at an intermediate height of the pressure chamber 119 on the side of the water tray 109. I will The ice making water in the pressure chamber 119 which extends in the vertical direction flows into each ice making water passage 121 which is separated vertically and extends in the horizontal direction.
5 is injected. At this time, communication port 1 to pressure chamber 119
The pressure difference between the ice making water in the upper and lower ice making water passages 121 is reduced because 70 is provided at an intermediate height position of the vertically arranged pressure chamber 119. For this reason, the jetting force in the ice making channel 121 above the communication port 170 does not become weak,
A sufficient amount of ice making water is supplied from the fountain port 107 to each ice making chamber 105. The ice making channel 1 below the communication port 170
Also at 21, the pressure of the ice making water is increased more than necessary, and a large amount of the ice making water is prevented from being sprayed into the ice making chamber 105.

On the other hand, the ice making water injected into each ice making chamber 105 spreads to the far side and the upper side of each ice making chamber 105, as shown by the typical streamlines in FIG. Those that do not result in freezing are inverted and flow toward the opening, and part of the ice is made from the kettle-shaped tip through the return ports 171 and 172 through the return water passage 142 different from the ice making water passage 121. It falls into the water tank 161. The remaining part is the horizontal partition plate 103b and the outer wall 111 of the water tray 109.
The ice making chamber 10 one step below the gap 110 formed between
Flow down little by little to 5. Ice making channel 121 of water tray 109
The ice making water is supplied under pressure by the continuous operation of the circulation pump 167, so that the ice making water is supplied to any of the ice making chambers 105 as described above. Ice making room 105
In parallel with the supply of the refrigerant to the evaporator 135, a low-temperature and low-pressure refrigerant is introduced from an upstream end communicating with the expansion valve into an evaporator 135 provided outside the inner wall surface 101 c of the ice making chamber 101. Then, the refrigerant absorbs the heat of the ice making water in each ice making chamber 105 while flowing down the evaporator 135. As a result, the ice making water in each ice making chamber 105 is supplied to the evaporator 135.
And horizontal and vertical ice making chamber outer frame plates 101a and 101b and vertical partition plates 103 made of a material having good heat conductivity.
a and the region in contact with the horizontal partition plate 103b freezes, and eventually grows into ice having a predetermined shape along the inner shape of the ice making chamber 105.

When the ice making process proceeds as described above, the ice grows concentrically around the center of the ice making chamber 105,
When the ice blocks the return ports 171 and 172, a sensor (not shown) detects the completion of ice making in the ice making chamber 105, the circulation pump 167 stops, and the ice making process is completed, and a driving device (not shown) The motor shaft 145 rotates to move to the deicing process. The ice formed as described above leaves a conical space 175 centered on the fountain 107 due to the effect of the fountain from the fountain 107, but the return port 17
1 is provided below the fountain port 107, particularly at the lowest position of the conical space 175 in the present embodiment, so that no freezing water remains in the conical space 175. . Therefore, the formation of cloudy ice due to the imperfect progress of ice making due to the heat capacity of each ice making chamber 105 after completion of the ice making process as in the prior art is prevented. In the course of the ice making process, even if the gap 110 and the air hole 108 between the ice making chamber 101 and the water tray 109 are closed,
7, the air in the ice making chamber 105 is discharged from the return port 172,
No ice-free.

When the motor shaft 145 of the driving device is rotated after the ice making process is completed as described above, the cam lever 147 fixed integrally with the motor shaft 145 is moved to the motor shaft 145.
In FIG. 1, the spring 155 is contracted. And during the ice making process, the spring 1
The water tray 10 closing the ice making chamber 101 by the elastic force of 55
9 is the ice making chamber 101 by the cam action of the cam lever 147.
As the spring 155 moves leftward as viewed in the drawing in addition to the decrease in the elastic force of the spring 155, the spring 155 tilts and separates clockwise about the upper shaft 137 as shown in FIG. To go. On the other hand, cam lever 1
The lever piece 149 integrally fixed to the cam shaft 147 is also rotated by the same angle and in the same direction as the cam lever 147.
When the water tray 109 is fully opened as shown in FIG. 2, the switch 151 attached to the frame 133 is switched to stop the driving device (see FIG. 2).

Next, in the deicing step, hot gas is flown into the evaporator 135 from the upstream end. As a result, the ice in each ice making chamber 105 is melted from the contact surface with the ice making chamber 105, and the horizontal partition plate 103b is inclined downward, so that the ice falls into an ice storage (not shown) by its own weight. Thus, the de-icing process is completed, and the motor shaft 145 of the driving device rotates in the reverse direction, and accordingly,
Cam lever 147, spring 155 and lever piece 1
Reference numeral 49 indicates a movement reverse to the movement described above, and the water tray 109 closes the opening of the ice making chamber 105 by the elastic force of the spring 155. At the same time, the tip of the lever piece 149 again switches the switch 151 provided on the frame 133, and the driving device stops (see FIG. 1).

Next, a second embodiment will be described with reference to FIGS. This second embodiment is shown in FIGS.
In this embodiment, only the position of the return port is changed as compared with the conventional one described in FIG. Therefore, in FIG. 6 and FIG. 7, the same reference numerals are given to the same or corresponding parts as those in the related art, and the contents thereof will be described below. That is, FIG.
In, the pressure chamber 19 is arranged in a horizontal direction above the water tray 9, and an ice making water channel 121 is arranged in a vertical direction so as to communicate with the pressure chamber 19. A fountain port 7 is provided for each ice making chamber 5 on the outer wall 11 of the water tray 9 which constitutes the ice making water channel 21 and closes the ice making chamber 5, and a fountain is provided on the outer walls 11 on both sides of the ice making water channel 21. Return ports 171 a and 172 communicating the ice making chamber 5 and the return water passage 42 at the lower and upper portions of the port 7.
a is provided. Since the return ports 171a and 172a are not at the same position level as the fountain port 7, they function in the same manner as in the first embodiment, and prevent the generation of cloudy ice and ice breakage. However, the return port 171 in the first embodiment is used.
And 172 are provided directly above or directly below the fountain port 7, so that the uniced water in the conical space portion of the ice-made ice is completely discharged. In the case of this embodiment, the conical space portion is formed. Is slightly lower than the return port 171a, there is a possibility that some un-iced water remains. Therefore, although the generation of cloudy ice can be reduced, it is difficult to completely prevent it.

FIG. 8 shows a third embodiment, which differs from the second embodiment in that a return port 172a above the fountain port 7 in the second embodiment is eliminated. Thus, two return ports 171a below the fountain port 7 are provided, and these are two return ports 171b. Therefore, also in the third embodiment, the return port 171b below the fountain port 7 exhibits the same function as the lower return ports 171 and 171a in the first and second embodiments, and becomes cloudy. The generation of ice can be prevented.

[0030]

As described above, according to the first aspect of the present invention, the ice making water supplied to the ice making compartment is provided below the fountain for supplying ice making water from the ice making channel to the ice making compartment. A return port is provided for returning water to the return water channel in the water dish, which can reduce or prevent the remaining of non-freezing water in the conical space around the fountain port, and reduce the generation of cloudy ice. Can be reduced or prevented.

According to the second aspect of the present invention, since the return port is provided below and above the fountain port, air in the ice making chamber is discharged from the upper return port in the ice making process. And the ice making water can be discharged to the return water channel from the lower return port, so that the occurrence of ice-free and cloudy ice can be reduced or prevented.

According to the third aspect of the present invention, since the return port is provided immediately above and below the fountain port, the air in the small ice making room is discharged from the upper return port in the ice making process and the conical shape around the fountain port. It is possible to more reliably discharge the uniced water in the space portion, and it is possible to more reliably generate ice-free and cloudy ice.

According to the fourth aspect of the present invention, the ice making water communication port is provided at an intermediate height position of the pressure chamber vertically provided in the water tray, and the ice making water passage is provided in the horizontal direction. The pressure difference of the ice making water in the ice making water channel becomes small, and the ice free in the upper ice making small chamber can be more reliably prevented without increasing the discharge pressure of the circulation pump.

[Brief description of the drawings]

FIG. 1 is an elevational view showing the entire structure of a vertical ice maker according to a first embodiment in an ice making process, partially broken away.

FIG. 2 is a similar view showing the overall structure of the vertical ice making machine in a deicing step.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a cross-sectional view taken along line BB in FIG. 3 and also shows a state of ice making.

FIG. 5 is an explanatory view of the arrangement of a fountain port and a return port of the vertical ice maker according to the first embodiment.

FIG. 6 is a view for explaining a main part of the vertical ice maker according to the second embodiment, and is a view in which an inner wall is viewed from inside a water dish.

FIG. 7 is a layout explanatory view of a fountain port and a return port of the vertical ice maker according to the second embodiment.

FIG. 8 is an explanatory view of the arrangement of a fountain port and a return port of the vertical ice maker according to the third embodiment.

FIG. 9 is a view showing the entire structure of a conventional vertical ice maker.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

11 is a sectional view taken along the line YY in FIG.

FIG. 12 is an enlarged view around the ice making chamber in the vertical ice making machine of FIG. 9;

FIG. 13 is a view for explaining the arrangement of the fountain port and the return port and the generation position of cloudy ice in the vertical ice maker of FIG. 9;

[Explanation of symbols]

101 ... ice making room, 5, 105 ... ice making room, 7, 107 ...
Fountain, 9, 109: water dish, 110: gap, 11, 11
DESCRIPTION OF SYMBOLS 1 ... External wall, 19, 119 ... Pressure chamber, 21, 121 ... Ice channel, 140 ... Cylindrical wall, 42, 142 ... Return water channel, 16
9 ... water pipe, 170 ... communication port, 171, 171a, 17
1b: Lower return port, 172, 172a: Upper return port, 173: Cloudy ice, 174: Ice-free, 175: Conical space.

Claims (4)

[Claims] 1. An ice making room having a plurality of ice making compartments arranged in a grid on a substantially vertical surface, and having the ice making compartment opening laterally, and an external wall for opening and closing the opening side of the ice making compartment. A water tray, an ice making channel formed in the water tray by using the outer wall, and a pressure chamber connecting the ice making channel to one side and dividing the ice making water from the ice making water tank into the ice making channel. A fountain hole formed in the outer wall for supplying ice making water from the ice making water channel to the ice making chamber, and the outer wall for returning the ice making water supplied to the ice making chamber to the return water passage in the water tray. A vertical ice maker having a perforated return port, wherein at least one return port is provided below the fountain port. 2. The vertical ice making device according to claim 1, wherein a plurality of the return ports are provided, some return ports are provided above the fountain port, and other return ports are provided below the fountain port. Machine. 3. The water supply system according to claim 1, wherein the pressure chamber is arranged in a vertical direction, the ice making channel is arranged in a horizontal direction, and a return port is provided directly above and below the fountain port. Vertical ice machine as described. 4. An ice making water communication port is provided in a vertical direction of the pressure chamber and in a horizontal direction of the ice making water passage, and at an intermediate height position of the pressure chamber. Item 4. The vertical ice maker according to any one of Items 1 to 3.