JP2540740Y2 - Cold water showcase - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chilled water showcase, and more particularly, to a chilled water showcase having a high effect of attracting customers.

[0002]

2. Description of the Related Art Conventionally, as this type of cold water showcase, one disclosed in Japanese Utility Model Laid-Open Publication No. 61-10481 has been known.

[0003] In the device disclosed in the publication, a water tank is defined as a storage room having an opening surface on the upper side, and the outer peripheral side wall surface of one of the partitions is transparent so that the cooled food inside can be easily recognized.

[0004] Also, in a general cold water showcase, the upper part is opened so that the cooled food in the water tank can be easily visually recognized.

[0005]

In the above-described conventional cold water showcase, although it is possible to visually recognize that food is immersed in the water tank, the water in the water tank is cold water and the food in the water tank cannot be seen. It was not possible to determine at a glance whether or not it was kept at a low temperature. In other words, shoppers cannot determine whether food is kept in a cold state with cold water or simply immersed in water and cooled. There is a problem that the consciousness may not be improved.

The present invention has been made in view of the above problems, and has as its object to provide a chilled water showcase that allows the user to recognize at a glance that water in a water tank is being cooled.

[0007]

According to a first aspect of the present invention, there is provided a water tank as a storage room having an opening surface on an upper side, and water in the water tank is cooled by a cooling mechanism. In the cold water showcase, an ice block forming cooling unit that is disposed above the water surface position of the water tank and has a cooling surface, and supplies water to the cooling surface of the ice block forming cooling unit. A water supply pump for causing water to flow down along the ice block while forming an ice block in the water, and a guide member for guiding cold water flowing down along the ice block into the water tank.

Here, the cooling unit for forming ice blocks may be disposed above the water tank separately from the water tank, may be disposed on a peripheral wall of the water tank at a position higher than the surface of the water tank, It can be installed at a position higher than the water surface near the center.

[0009] The water supply pump may supply water uniformly from above the cooling surface, partially supply water, continuously or intermittently, or discharge upward like a fountain. The dropped water may be supplied to the cooling surface.

The invention according to claim 2 is based on claim 1.
In the cold water showcase described in the above, the cooling mechanism,
An ice block forming cooling unit disposed above the water surface position and a second cooling unit that cools the water in the water tank separately from the ice block forming cooling unit are provided.

Here, as the second cooling section, a pipe through which the refrigerant passes is disposed on the peripheral wall surface of the water tank, the pipe is disposed in the water tank, or the water in the water tank is pumped by a pump. To supply heat to the heat exchanger provided with the pipe.

Further, the invention according to claim 3 is a cold water showcase according to claim 1 or 2,
The cooling unit for forming ice blocks has a configuration in which a tube through which the refrigerant passes is exposed.

[0013] Here, as the exposed tube,
In addition to a straight or meandering form, it may be curved so as to partially project downward, or curved so as to have a decorative form.

According to a fourth aspect of the present invention, in the cold water showcase according to any one of the first to third aspects, the cooling unit for forming ice blocks is provided with a holding member for holding the ice blocks formed on the cooling surface. There is a configuration provided.

Here, as the holding member, a plurality of projections are projected from the cooling surface, a shelf-shaped one is projected, or a flat plate having a decorative predetermined shape is slightly separated from the cooling surface. Or can be fixed.

On the other hand, the invention according to claim 5 is based on claim 1.
In the chilled water showcase according to the fourth aspect, the cooling unit for forming ice blocks is configured to partially cool the cooling surface with a different degree of cooling.

Here, as a structure for making the degree of cooling different, the tube through which the refrigerant passes may be disposed close to or away from the rear surface of the flat cooling surface, or the heat conduction to the cooling surface may be performed. It is possible to mix and dispose members having different properties, or to locally or partially heat a portion connecting the pipe and the cooling surface.

According to a sixth aspect of the present invention, in the chilled water showcase according to any one of the first to fifth aspects, the cooling unit for forming an ice block is provided after the cooling unit for forming the ice block on the cooling surface. The configuration is provided with supercooling control means for supercooling the cooling unit.

Here, the supercooling control means includes:
Set the lower limit of the cooling temperature range lower than usual, keep the drive motor of the compressor in the cooling mechanism driven for a predetermined time after reaching the minimum cooling temperature, or supercool with the cooler that cools normally It is also possible to arrange a special cooler to be operated and to operate the special cooler every predetermined time.

[0020]

In the invention according to the first aspect, the cooling unit for forming ice blocks has a cooling surface disposed above the water surface position of the water tank, and the water supply pump is provided with the cooling unit for forming the ice blocks. Water is supplied to the cooling surface of the cooling unit. The water is cooled on the cooling surface to form an ice block, and is further cooled when the water supplied on the ice block flows down the water along the ice block, and the guide member moves along the ice block. The flowing cold water is guided into the water tank.

In the invention according to claim 2 configured as described above, the cooling mechanism includes the ice block forming cooling unit and the second cooling unit, and the cooling unit is provided above the water surface position of the water tank. An ice block is formed by the provided ice block forming cooling section, and the water in the water tank is cooled by the second cooling section separately from the ice block forming cooling section.

Further, in the invention according to claim 3 configured as described above, when water is supplied to the cooling unit for forming ice blocks by the water supply pump, the pipe through which the refrigerant passes is exposed. Rapid heat exchange between the refrigerant and water on the exposed surface.

In the invention according to claim 4 configured as described above, the holding member in the cooling unit for forming ice blocks holds the ice blocks formed on the cooling surface, and the ice blocks drop from the cooling surface. So that they don't go away.

On the other hand, in the invention according to claim 5 configured as described above, since the cooling surface in the cooling unit for forming ice blocks is partially different in cooling degree, the ice blocks are large in a portion having a large cooling degree. The ice blocks are formed and cooled in small portions in a small cooling degree.

In the invention according to claim 6 configured as described above, the supercooling control means in the cooling unit for forming ice blocks is configured to supercool the cooling unit for forming ice blocks after the ice blocks are formed on the cooling surface. At the same time, the ice block is supercooled from the inside, causing cracks.

[0026]

[Effects of the Invention] As described above, in the present invention, an ice block is formed above the water surface, and water flowing along the ice block is guided into the water tank. It turns out that the water is cold water. That is, it is possible to provide a cold water showcase that allows the purchaser to understand that the food is cooled and displayed, and to improve the purchase consciousness.

According to the second aspect of the present invention, since the water in the water tank is not cooled only by the cooling unit for forming ice blocks, the cooling capacity of the cooling unit for forming ice blocks can be given a margin.
In other words, a small ice block formed on the cooling surface is sufficient, and the degree of freedom of arrangement near the water tank can be increased, or a more decorative form can be obtained.

Further, according to the invention of claim 3, water can be supplied to the surface of the pipe through which the refrigerant passes to form an ice block at an early stage. Therefore, an ice block is formed during the preparation for opening the store, and the purchaser can be made to understand that the ice block has been cooled since the store was opened.

According to the present invention, the formed ice block can be held on the cooling surface for a long time. By the way, when a temporary power failure occurs, the temperature of the cooling surface may exceed the upper limit according to the power failure time. Then, the ice blocks on the cooling surface begin to melt and slide down from the cooling surface by the molten water. In such a case, if the ice blocks fall into the water tank, the water in the water tank jumps out, and if the ice blocks fall outside the water tank, the floor surface becomes wet. Also, once the ice block falls, it takes a certain amount of time for the ice block to be formed even when the power is turned on, and during this time, there is an image that it is not cold water just because there is no ice block, which is counterproductive. .

On the other hand, in the present invention, the holding member prevents the ice blocks from falling, so that the surroundings can be prevented from being wet by the sliding of the ice blocks, and the holding member is held on the cooling surface when the power is supplied again. Since the ice blocks grow, the required size of ice blocks can be formed at an early stage.

On the other hand, the invention according to claim 5 can change the size of the ice block formed by partially varying the degree of cooling of the cooling surface, thereby exhibiting a decorative effect. In addition, an ice effect of characters and marks can be formed to exert an advertising effect.

In the device according to the sixth aspect of the present invention, the ice block is overcooled after the ice block is formed, and cracks are generated from the inside. At the time of the cracks, a "pip" sound is generated. The sound generated at the time of the cracks attracts the consciousness of the purchaser, and the presence of the cracks makes it easier to find the ice block itself, thereby improving the effect of attracting customers.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a cold water showcase according to an embodiment of the present invention, and FIG. 2 is a view showing a cooling mechanism applied to the cold water showcase.

In the figure, a water tank section 10 having a water tank 11 having an opening on the upper surface is disposed at a lower portion.
An ice block forming part 20 that protrudes upward is disposed at an edge part on the back side of 1.

The water tank 11 in the water tank section 10 is made of a member having good thermal conductivity, and a heat insulating material 12 is provided on the outer periphery thereof.

Further, a cooling mechanism 30 is provided below the water tank 11, and as shown in FIG. 2, the cooling mechanism 30 compresses a refrigerant and an air-cooled compressed refrigerant. A condenser 33 that condenses under the air cooling action of the fan 32, a dryer 34 that dehumidifies the condensed condensed refrigerant, a capillary tube 35 that converts the dehumidified condensed refrigerant into a low-temperature low-pressure refrigerant, and vaporization of the low-temperature low-pressure refrigerant A cooler 36 (36a, 36a) that cools by heat and supplies the vaporized refrigerant to the compressor 31
b).

Here, the cooler 36 is a cooler 3 for forming ice blocks.
6a and a second cooler (second cooling unit) 36b, the ice block forming cooler 36a is disposed in the ice block forming unit 20, and the second cooler 36b is provided on the outer peripheral side of the water tank 11. It is fixed by contacting the peripheral wall while rotating around the peripheral wall.

In the water tank 11, the water tank 1
1 is provided with a partition plate 13 for partitioning the inside 1 in parallel to the back wall. A large number of communication holes 13 a are formed in the partition plate 13, and a communication hole 14 communicating with a water supply port of a pump (water supply pump) 41 is formed on the bottom surface between the partition plate 13 and the inner wall. The pump 41 is for pumping water in the water tank 11 supplied through the communication hole 14, and its discharge port is provided at the sprinkling guide pipe 21 provided above the ice block forming unit 20.
It is connected to the.

The ice block forming section (ice block forming cooling section) 20 in which the watering guide tube 21 is disposed is configured such that a flat cooling plate 22 made of a heat conductive member is directed upward from the back wall of the water tank 11. The ice block forming cooler 36a, which is connected in a flush state (forms a guide member) and has a meandering and reduced overall length on the back surface of the cooling plate 22, is arranged in contact with the cooling plate 22. Further, the sprinkling guide pipe 21 is disposed horizontally in the vicinity of the upper end of the surface of the cooling plate 22. In addition, an ice block forming cooler 36a is provided on the back surface of the cooling plate 22, and the heat insulating material 23 is provided at an appropriate position.

Here, the sprinkling guide tube 21 has sprinkling ports 21a formed at appropriate intervals, and is arranged with the sprinkling ports 21a facing upward of the surface of the cooling plate 22.
An ice block detection sensor 5 for detecting whether or not an ice block is formed on the surface of the back surface of the cooling plate 22 below the portion where the ice block forming cooler 36a is disposed.
1 is provided.

The ice block detection sensor 51 is a switch that is turned off when the temperature decreases, and is provided in an electric control circuit 50 connected to a commercial AC power supply as shown in FIG. Here, the electric control circuit 50 includes first and second power supply lines (L1, L2) 53, 5 connected to the commercial AC power supply via a main switch (MS) 52.
The sensor 51 for detecting ice blocks and the electromagnetic coil 55 of the relay (R1) are connected in series between the two power supply lines 53 and 54, and the normally open contact R1 of the relay R1 is connected.
-1 is connected in series with a parallel circuit including a compressor motor (CM) 56 and a fan motor (FM) 57. It should be noted that the pump motor (P
M) 58 is also connected between the first and second power supply lines 53 and 54.

The water tank section 10 and the ice block forming section 20 are both housed in a cabinet 60.

Next, the operation of this embodiment having the above configuration will be described. After filling the water tank 11, the main switch 5
When the switch 2 is turned on, the pump motor 58 is energized, and the pump 41 is operated to pump up the water in the water tank 11 and spray water from the water spray port 21 a of the water spray guide pipe 21 to the cooling plate 22.
The water sprinkled on the cooling plate 22 flows down as a water film and reaches the lower end of the cooling plate 22. Then, the water film is transmitted to the inner wall of the water tank 11 via a guide member, which is a connection portion between the lower end and the inner wall of the water tank 11, and returns to the inside of the water tank 11.

At first, since the temperature of the cooling plate 22 is close to room temperature, the ice block detection sensor 51 is turned on, and the electromagnetic coil 55 of the relay R1 is energized.
Therefore, the normally open contact R1-1 of the relay R1 becomes conductive, and the compressor motor 56 and the fan motor 57 in the cooling mechanism 30 are energized.

Compressor motor 56 and fan motor 5
7 operates, the cooling mechanism 30 operates,
The ice block forming cooler 36a and the second cooler 36b are cooled. Since the second cooler 36b cools the peripheral wall of the water tank 11, the water in the water tank 11 is gradually cooled from the peripheral wall. Since the ice block forming cooler 36 a cools the cooling plate 22, the cooling plate 22 is
The water sprinkled thereon is cooled when flowing down along the cooling plate 22.

The water in the water tank 11 is pumped above the cooling plate 22 by the pump 41 and circulated, and the temperature gradually decreases due to the action of the ice block forming cooler 36a and the second cooler 36b. .

Then, the water flowing down on the cooling plate 22 is at 0 ° C.
When the following occurs, ice blocks begin to form on the cooling plate 22,
This ice block grows gradually. The ice block grows on the cooling plate 22 in a forward and a vertical direction with respect to the portion where the ice block forming cooler 36a is provided, and the portion growing below the ice block detecting sensor 51 shown by a solid line in FIG. When reaching the installed position, the temperature of the ice block detection sensor 51 starts to decrease.

When the temperature of the ice block detection sensor 51 drops below a predetermined temperature, the ice block detection sensor 51 is turned off, the electromagnetic coil 55 of the relay R1 is not energized, and the normally open contact R1-1 is turned off. Becomes Then, power is not supplied to the compressor motor 56 and the fan motor 57, and the operation of the cooling mechanism 30 is stopped.

Even if the cooling mechanism 30 stops operating, the pump 4
1 continues the operation and sprinkles the water in the water tank 11 from above the cooling plate 22. Accordingly, the temperature of the water in the water tank 11 rises at room temperature, and the ice blocks on the cooling plate 22 are melted. Then, the ice block gradually melts, and the ice block detection sensor 5
When the ice block detection sensor 51 deviates from the installation portion, the temperature of the ice block detection sensor 51 rises and the sensor turns on, and the cooling mechanism 30 starts operating in the same manner as described above.

Hereinafter, this operation is repeated, and the main switch 5
While turning on 2, the ice block on the cooling plate 22 repeats growth and melting within a certain range, and keeps the water in the water tank 11 at a low temperature by causing the water in the water tank 11 to flow down along the ice block. Can be. Therefore, low temperature can be maintained by immersing bottled food, canned food, sealed food, fresh flowers, and the like in the water tank 11. Also, at this time, the partition plate 13 restricts the movement of the immersion object, so that the immersion object does not block the water supply port of the pump 41.

FIG. 4 shows a modification of the present invention. In the present embodiment, the tube 3 constituting the ice block forming cooler 36a
6a1 is arranged so as to be exposed on the front surface, not on the back surface of the cooling plate 22, and the sprinkling port 21a of the sprinkling guide tube 21 is oriented with respect to the uppermost pipe 36a1.

In this configuration, the water discharged from the water sprinkling port 21a is cooled as it flows down the pipe 36a1 of the ice block forming cooler 36a and flows down.
Ice blocks form on the surface. As the ice blocks grow, the ice blocks formed around each tube 36a1 are connected in the vertical direction to form one ice block.

The water flowing down along the surface of the ice block drops into the water tank 11, and it can be seen that the water tank 11 is kept at a low temperature. The ice block detection sensor 51 is disposed on the back surface of the cooling plate 22 and at the same height as the lowermost tube 36a1, and the ice block formed around the tube 36a1 grows. When contacting the cooling plate 22, the temperature drops and the presence of ice blocks is detected.

On the other hand, the tube 36a1 may meander and have a shape having a horizontal portion and a curved portion.
As shown in FIG. 5 or FIG. 6, a substantially horizontal portion may be partially bent downward.
At this time, the sprinkling port 21a of the sprinkling guide tube 21 is oriented mainly toward a portion bent downward.

With this configuration, the water sprinkled on the pipe 36a1 can be dripped from a portion bent downward to form an ice block like an icicle.

FIG. 7 shows another modification of the present invention. In this embodiment, the ice block forming section 20 is formed on the entire periphery of the water tank section 10. That is, the edge of the water tank 11 is made tall, and is disposed around the outer periphery of the ice block forming cooler 36a.
1 is arranged.

In this configuration, the pump 41 is connected to the water tank 1
1 is drawn up and allowed to flow down from the upper end edge of the water tank 11, and an ice block forming cooler 36a disposed on the way is provided.
To form an ice block.

FIG. 8 shows another modification of the present invention. In this embodiment, as compared with the embodiment shown in FIG. 7, a slope wall 11 a is formed so as to gradually widen outward in an opening portion of the water tank 11, and is formed on an outer peripheral side of the slope wall 11 a. The difference is that an ice block forming cooler 36a is provided.

With such a configuration, the inclined wall 11a
Even if an ice block is formed in the portion, the opening area of the water tank 11 is not narrowed, and the cooling material in the water tank 11 can be easily taken out. In addition, the ice blocks can be easily visually recognized without looking into the water tank 11.

FIG. 9 shows another modification of the present invention. In this embodiment, the island-shaped projecting portion 11 is
b, and the pump 41 pumps water in the water tank 11 upward from the water spout 21a formed at the center of the protruding portion 11b. An ice block forming cooler 36a is provided on the inner peripheral side of the upper end of the protruding portion 11b.

In this configuration, water discharged upward from the center of the protruding portion 11b falls downward and flows down along the outer peripheral surface of the upper end of the protruding portion 11b. It is cooled by the vessel 36a to form an ice block.

In this manner, the decorative effect of fountain and the substantial effect of cooling can be exhibited.

In the embodiment described above, the second cooler 36b is provided together with the ice block forming cooler 36a.
The inside of the water tank 11 is cooled. However, if the ability to cool the water in the water tank 11 by the ice block forming cooler 36a is sufficient, the second cooler 36b may be omitted.

By the way, as shown in FIG. 1, in the case of having the flat cooling plate 22, when a power failure occurs due to malfunction of the power supply equipment, the ice block starts to melt at room temperature. And
As the melting of the ice block progresses, the molten water enters the contact portion with the cooling plate 22, so that the entire ice block slides off the cooling plate 22.

In order to prevent such a situation, as shown in FIG. 10, a holding member (holding member) 71 protruding in the surface direction from the flat cooling plate 22 may be fixed. Each holding body 71 may have a form in which the end is directed upward as shown in FIG. 11 or a form in which the end is formed in a flange shape as shown in FIG. FIG.
As shown in FIG. 3, the rod-shaped body 72 may be disposed in the horizontal direction at a predetermined distance from the cooling plate 22.

When such a holding body 71 or a rod-shaped body (holding member) 72 is provided, the ice blocks grow around them, so that even if the ice blocks melt and molten water enters between the cooling plates 22. Does not slide down immediately. Also, when the electricity is re-energized, the ice blocks grow around the remaining ice blocks,
The original ice block can be revived early.

FIG. 14 shows another modification of the present invention. The present embodiment is different from the embodiment shown in FIG. 1 in that the meandering interval in the meandering and bent ice block forming cooler 36a is widened and the respective pipes 36a1 are arranged at a distance from each other. Different. The cooling plate 22 is made of stainless steel, which has not so good thermal conductivity.

In this configuration, the cooling plate 22 is
The temperature is lowered by cooling well at the position where 6a1 is disposed, and the temperature does not decrease without being cooled very well at the intermediate position of each pipe body 36a1. Therefore, the water film flowing down from the water spray guide tube 21 from above the cooling plate 22 easily forms an ice block at a position where the temperature is low, and the speed at which the ice block is formed becomes low at a position where the temperature is not too low. As a result, a thick ice block is formed on the cooling plate 22 at the portion where the tube 36a1 of the ice block forming cooler 36a is disposed on the back surface, and each tube 36a1 is formed.
A thin ice block is formed in the middle part of, and an ice block having a wavy surface as a whole is formed.

An ice block having a wavy surface has an effect that it is easier for a purchaser to find it from a distance than an ice block having a flat surface.

FIGS. 15 and 16 show another modification of the present invention, which forms an ice block having an uneven surface, similarly to that shown in FIG. In this embodiment, a copper conductive plate 36a2 having the shape of "A" shown in FIG.
1 is brought into contact with the conductive plate 36a2.

In this configuration, the heat of the tube 36a1 is transmitted to the conductive plate 36a2. Since the conductive plate 36a2 is made of copper, which is a heat conductive member, cold heat is transmitted uniformly,
Cooling plate 22 is well cooled in a portion where conductive plate 36a2 is in contact.

Accordingly, the water film flowing down from above the cooling plate 22 from the watering guide tube 21 is well cooled at the portion where the conductive plate 36a2 is in contact with the back surface to form an ice block. An ice block having an "A" shape substantially the same as the shape of the plate 36a2 is formed.

As described above, in this embodiment, an ice block having the same shape as the conductive plate 36a2 can be formed.
Advertising effects can be obtained by using the conductive plate 36a2 as characters corresponding to the food stored in the water tank 11 or as characters for the store name.

FIG. 17 is a circuit diagram of an electric control circuit according to another modification of the present invention. In the figure, the ice piece detection sensor 59 has a movable piece connected to the fixed contact H when no ice piece is detected, and the movable piece connected to the fixed contact L when an ice piece is detected. The fixed contact H and the relay (R
The normally open contact R2-2 of 2) is connected in parallel, and the parallel circuit and the pump motor 58 are connected to the power supply lines 53 and 54.
They are connected in series between them.

The fixed contact L of the ice block detecting sensor 59
Is connected in series with the timer 61 between the power supply lines 53 and 54. The timer (T) 61 has a normally open contact T1, and conducts the normally open contact T1 after a lapse of a predetermined time from the supply of power.

The normally open contact T1 of the timer 61 is connected in series with the electromagnetic coil 62 of the relay R2 between the power supply lines 53 and 54, and the normally closed contact R2-1 of the relay R2 is connected to the compressor motor 56 and the fan motor. 57 is connected between the power supply lines 53 and 54 in series with the parallel circuit composed of 57.

In this configuration, it is assumed that the main switch 52 is turned on from the normal temperature state. Ice block detection sensor 5
In No. 9, since the ice block is not detected, the movable section is connected to the fixed contact H, and the pump motor 58 is energized. Therefore, the fixed contact L remains open, the timer 61 is not energized,
The normally open contact T1 remains open, and the electromagnetic coil 62 of the relay R2 is not energized. Then, the normally closed contact R2
-1 and the compressor motor 56 and the fan motor 5
7 is energized.

That is, the cooling mechanism 30 is operated to cool the cooling plate 22, and the pump 41 is operated to form a water film on the cooling plate 22 from the watering guide tube 21.
Ice blocks are formed on the cooling plate 22.

As the ice blocks on the cooling plate 22 gradually grow, the portion where the ice block detection sensor 59 is disposed is cooled, and the movable section is connected to the fixed contact L. As a result, the power supply to the pump motor 58 is cut off and the timer 61 starts counting time. Since the normally open contact T1 remains open for a predetermined time after the energization of the timer 61 is started, the relay R2 is not energized and the normally open contact R2-1 remains closed. ing.

That is, with the supply of the water film from the watering guide tube 21 stopped, only the cooling mechanism 30 continues to operate. In such a state, the ice block is supercooled from the inside and cracks occur.

When this crack occurs, "pick"
It makes a loud noise and attracts buyers' attention. In addition, as shown in FIG. 18, when a crack occurs in the ice block, an opaque line is visible, so that it is easily understood that the ice block is formed on the cooling plate 22.

Normally, the buyer turns his / her eyes in the direction of the sound, and when a sound is generated when a crack occurs, turns the eyes in the direction of the sound and recognizes that the cold water showcase is installed. . Then, it is also understood that the cracks have formed ice blocks, and it is possible to recognize at a glance that there are foods that are not only immersed in water but also kept at low temperature with cold water.

During a predetermined period after the timer 61 is energized, the cooling mechanism 30 operates, and cracks occur in the ice block as described above. However, when a predetermined time has elapsed, the timer 61 closes the normally open contact T1. Normally open contact T1
Is closed, the electromagnetic coil 62 of the relay R2 is energized to open the normally closed contact R2-1 and close the normally opened contact R2-2. When the normally open contact R2-1 opens, the cooling mechanism 30 stops operating and stops cooling the ice block. On the other hand, when the normally open contact R2-2 is closed, the pump motor 58 is energized, the pump 41 resumes its operation, pumps up water, and the watering guide pipe 2
1 to form a water film on the cooling plate 22.

The water film penetrates into the cracks to make the cracks disappear, and the ice blocks gradually melt. When the ice block has melted until the ice block detection sensor 59 no longer detects the ice block, the movable piece of the ice block detection sensor 59 is connected to the fixed contact H, and the power supply to the timer 61 is stopped. Then, the normally open contact T1 of the timer 61 is opened to return to the initial state, the cooling mechanism 30 starts operating, and the pump 41 causes the water in the water tank 11 to be discharged from the watering guide pipe 21.

In the above embodiment, the lighting equipment is not described. However, the ice blocks may be irradiated with blue light to make the ice blocks easier to see. Further, a water wheel or a flow path may be provided in a flow path through which water flows to make it easier to understand a state in which water transmitted on the ice block flows into the water tank 11.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a cold water showcase according to an embodiment of the present invention.

FIG. 2 is a diagram showing a cooling mechanism.

FIG. 3 is a circuit diagram of an electric control circuit.

FIG. 4 is a side sectional view showing a modification of the present invention.

FIG. 5 is a perspective view showing a modification of the cooler for forming ice blocks.

FIG. 6 is a perspective view showing a modification of the present invention.

FIG. 7 is a side sectional view showing a modification of the present invention.

FIG. 8 is a side sectional view showing a modification of the present invention.

FIG. 9 is a side sectional view showing a modification of the present invention.

FIG. 10 is a partial front view showing a mounting state of a holding member.

FIG. 11 is a sectional view showing a holding member.

FIG. 12 is a sectional view showing a holding member.

FIG. 13 is a sectional view showing a holding member.

FIG. 14 is a side sectional view showing a modification of the present invention.

FIG. 15 is a cross-sectional view showing an arrangement state of a conductive plate.

FIG. 16 is a front view showing an arrangement state of a conductive plate.

FIG. 17 is a circuit diagram of an electric control circuit according to a modification of the present invention.

FIG. 18 is a front view showing a crack generated in an ice block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Water tank 20 ... Ice block formation part 21 ... Sprinkling guide tube 22 ... Cooling plate 30 ... Cooling mechanism 36a ... Cooler for ice block formation 36a1 ... Tube 36a2 ... Conducting plate 36b ... Second cooler 41 ... Pump 50 ... Electric control circuit 51,59… Ice block detection sensor

Claims (6)

(57) [Scope of request for utility model registration] 1. A chilled water showcase comprising a water tank as a storage room having an upper opening surface, wherein water in the water tank is cooled by a cooling mechanism, wherein the cooling water is disposed above a water surface position of the water tank. A cooling unit for forming an ice block having a surface, a water supply pump that supplies water to a cooling surface of the cooling unit for forming an ice block, and causes water to flow down along the ice block while forming an ice block on the cooling surface; And a guide member for guiding cold water flowing down along the ice block into the water tank. 2. The chilled water showcase according to claim 1, wherein the cooling mechanism is provided separately from the ice block forming cooling unit disposed above the water surface position and the ice block forming cooling unit. A cold water showcase, comprising: a second cooling unit for cooling water in the water tank. 3. The chilled water showcase according to claim 1, wherein the cooling unit for forming ice blocks has a configuration in which a tube through which a refrigerant passes is exposed. . 4. The chilled water showcase according to claim 1, wherein the cooling unit for forming ice blocks is provided with a holding member for holding the ice blocks formed on the cooling surface. Features a cold water showcase. 5. The chilled water showcase according to claim 1, wherein the cooling unit for forming ice blocks is configured to partially cool the cooling surface with a different cooling degree. Features a cold water showcase. 6. The cold-water showcase according to claim 1, wherein the cooling unit for forming ice blocks is formed by supercooling the cooling unit for forming ice blocks after the ice blocks are formed on the cooling surface. A cold water showcase comprising cooling control means.