JPS62125277A - Cooling preserving device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for cooling and preserving foods such as meat and fresh fish using cooling water.

(b) Prior art For example, patent application No. 3854, filed earlier by the applicant of the present application.
No. 7 includes a food cooling storage device that cools the water in the water tank by flowing a refrigerant through a cooling nozzle installed in the water tank, and cools and preserves the food stored in the water tank. It is shown.

(c) Problems to be Solved by the Invention In the above-mentioned conventional technology, a low temperature liquid refrigerant of, for example, -5°C is flowed through a cooling pipe immersed in water in a water storage tank, and the water in the water storage tank is When cooled to 0.degree. C., the water temperature around the cooling pipe becomes 0.degree. C. or less due to this cooling operation, and ice gradually forms on the surface of the cooling pipe. Therefore, when the operation of the cooling storage device is stopped and the water in the water tank is drained to clean the water tank, if you want to quickly melt the ice in the cooling pipe, it is necessary to melt it by pouring hot water on it, for example. , thawing work becomes complicated,
Furthermore, if the ice is left to melt naturally in the surrounding air, cleaning cannot be carried out after the water has been drained until the ice has melted, resulting in the problem that it takes a long time to clean the inside of the water tank.

By the way, if you let the ice melt naturally after draining, the smell of fish and meat contained in the melted water will remain in the tank.
As a result, there is a problem in that new cleaning is required after the ice has completely thawed or before water is poured into the water tank. The present invention aims to solve the above problems.

B) Means for Solving the Problems In order to solve the above problems, the present invention includes a heat exchange pipe immersed in water stored in a water tank, and a low temperature liquid refrigerant is flowed through the heat exchange pipe. In the cooling storage device for cooling water, the heating device heats the heat exchange pipe while water is stored in the water storage tank to melt ice formed on the surface of the heat exchange pipe during cooling operation. The present invention provides a cooling storage device equipped with the following.

(e) Operation When the operation of the cooling storage device is stopped and the water in the water tank is drained for cleaning, etc., the heating device is operated as the water is drained and the heat exchange pipe is heated to exchange heat. Quickly melts ice that forms in pipes.

(F) Example Hereinafter, an example of the present invention will be described in detail based on the drawings.

In Fig. 2, (11) indicates a cooling storage device, (2) is a water storage tank defined by a heat insulating box that opens upward;
A partition plate (3) is provided inside the partition plate (2).
3), the water tank (2) has a main tank (4) and a sub tank (5).
) and partitions are formed. A net shelf (6) is installed at the bottom of the main water tank (4) to store food. or,
A screen (7) serving as a filter is installed horizontally in the sub-tank (5) below the upper end of the partition plate (3).
Further below, a heat exchange pipe (8) included in the refrigeration cycle of the cooling device is arranged apart from the bottom of the water tank. Further, near the heat exchange pipe (8), there is provided a drought sensor 0υ, which is an electrode that detects a drought by passing a current through the heat exchange pipe (8) through the water or salt water in the water storage tank. Here, as shown in FIG. 5, the refrigeration cycle includes an electric compressor αJ, a four-way valve (1), a condenser (1), a dehydrator, a first cavity recess (toward), a heat exchange pipe (8), a four-way valve Valve (Ha) and Akiemureta (Ha)
In addition, in parallel with the piping between the dehydrator (c) and the first capillary tube Q4J, piping for the check valve (to) and the second capillary tube (b) is provided. has been done. When cooling the water in the water storage tank (2), the refrigerant flows as shown by the solid arrow in Figure 5, and when heating the heat exchange pipe (8), the refrigerant flows as shown by the chain arrow. flows. Note that the feed 1 for the condenser is the machine.

Furthermore, a draining table 0υ is installed at the opening of the water tank (2) above the sub-water tank (5). az is a unit box body that houses the sterilizer eQ9 consisting of the compressor floor 0, condenser a4, and ozone generator that constitute the refrigeration cycle of the cooling system, and is located on the water tank (2) side on the sub-water tank (5) side. placed in the department.

The heat exchange pipe (8) extends from there into the sub-water tank (5), and the upper surface of the box α2 is flat and its height is the same as that of the draining table Ql. This allows the top surface of the box 03 to be used as a table. or,
Since the draining stand O1 is located on the sub-water tank (5), it is very easy to drain the food after cooling, washing, or thawing.

When the food to be stored is meat or fresh fish, salt is mixed into the water α barrel injected into the water tank (2) to adjust the permeation cliff, and the salt content is approximately 1% for meat and 3.5% for fresh fish. % saline solution. In the case of vegetables, the fresh water remains as it is, and when the water reaches 0 seconds, it is pumped into the sub-tank (
5) It is inhaled through the suction pipe (to) opened at the bottom, and at this time, it is generated in the sterilizer α9, and after being sterilized by the action of ozone released from the ozone injection pipe (IQ), it is sent to the bottom of the main water tank (4). The water is discharged from the opened discharge pipe QO into the main tank (4).The water level in the main tank (4) is set in advance by the partition plate (3).
), and as a result, the overflow water (a) is filtered by force and falls into the sub-tank (5), where it is stored and circulated again by being sucked in through the suction pipe (2). The water level in the secondary water tank (5) is set above the cooling pipe 4, thereby cooling the water to, for example, +5°C for vegetables, 0°C for meat, and -2°C for fresh fish.Such foods. is cooled by cold water in the main water tank (4), which has the effect of increasing the cooling rate of its core temperature.Furthermore, when used for washing food, dirt is filtered by the screen (7). This prevents clogging of pump members, etc.

It is necessary to replace the circulating water α mallet because it is contaminated with food odors and fine particles that have not been filtered by the screen (7). Therefore, in this application, as shown in FIG.
(A pump 21 is provided with a conduit 6z branching from the conduit 6υ facing the L!J direction, and a normally closed valve 6 is installed in the middle of this conduit 6z.
3) Attach. That is, when discarding the circulating water (181), remove the partition plate (3) and open the valve 5Q with the main water tank (4) and the sub water tank (5) communicating, and the water tank (2
) flows down the water 08 & house suction pipe (■) and the conduit 5z and is discharged from its outlet 1!54). Also, at this time, since the discharge pipe Qυ is positioned above the conduit 5952, etc., the water Q11G in the discharge pipe eυ also flows into the pump H and the conduit 51).
Since the water flows backward and is discharged from the discharge port 64), the waste water in each pipe can also be properly discharged.

Furthermore, Fig. 1 shows the operation control circuit of the cooling storage device +11 (40 is an operation control section composed of a microcomputer, and this operation control section stores in advance the defrosting return temperature, time, etc. ROM (memory circuit) (40, RAM (memory circuit) for temporarily storing control data (water temperature data, etc.) (4'2I), and the ROM (411, Ra
tv (CPU (arithmetic circuit) (43) and engineering 10 (input/output signal control circuit) (4
4). Here, l10 (44) is provided between the ROM (411, RAM (42), CPU (43), data display section (451, control signal output circuit (461), each data detection section, etc.), and (47) controls the input/output signals between the water temperature sensor (47).
and capacitor sensor (A/D conversion circuit that inputs the signal from 491 and converts the signal, (G) is a clock counter, 57) is a water shortage sensor 0 that detects water shortage in the water tank (2).
1) is connected to the water temperature sensor circuit, (A) is the keyboard equipped with the ice melting switch 59°, ozone injection switch + 60), etc., and the surface is the buzzer that generates the alarm sound. As shown in the figure, the capacitor sensor (4'l is a pipe on the outlet side of the condenser α4 as shown in Figure 5) is attached by a mounting member (48a) between the heat exchange pipes (8) located above and below In addition, the control signal output circuit (461) operates based on the output signal of the I/O (44), and the control signal output from this output circuit (461) controls the pump α value and the compressor , and the four-way valve (23) is controlled.

In the above operation controls t and h, when the operation of the cooling storage device (1) is finished and the drain valve ① is opened, the deicing switch 61 on the keyboard (support) is pressed, and the switch is switched from the keyboard to the I/01441. A suppression signal is provided. Then, the I/O (441) outputs switch data to the CPU (43) indicating that the thawing switch (5gl) is pressed, and the input CPU outputs this switch data.
G131 enters an operation to thaw the ice. At this time,
CPU (A/D (47) to l10f441 from 4
) is given a command to manually input the temperature data learned by the water temperature sensor (481), and l10 (4J is A
/ D (49 inputs temperature data. Then, l10 (441 inputs the temperature data through CPU (43
Output to. In addition, the CPU t43 inputs the deicing return temperature (for example, the hot state of water in the heat exchange pipe) of 5° C. which is preset in the ROM (411), and compares this deicing returning temperature with the 1 degree data. .

When the temperature data is equal to or higher than the thawing return temperature, the CPU (43) does not output a heating operation instruction, does not enter the thawing operation, and returns to the state before pressing the thawing switch (59). .

Furthermore, when the CPU (43) compares the deicing temperature with the temperature data, it is determined whether the water temperature sensor (481) is in contact with the ice that has formed in the heat exchange pipe (8) or is buried in the ice. When the temperature data is lower than the deicing return temperature, the CPU (43 outputs a heating operation instruction to Ilo (441).
461, the four-way valve (2) is switched so that the heat exchange pipe (8) acts as a condenser, and a signal is given to forcibly turn on the compressor. Based on this signal, a four-way valve switching signal and a compressor operation signal are output from the control signal output circuit-G, and the four-way valve (n is switched) and the compressor α3 is forcibly operated. The refrigerant circulates as shown by the arrow.As the four-way valve is switched, high-temperature, high-pressure hot gas refrigerant flows into the heat exchange pipe (8), exchanging heat with the ice surrounding the heat exchange pipe (8). As a result, the ice gradually melts and becomes easy to peel off from this pipe.The CPUtA3 sends instructions for heating operation to l10 (
44), a count signal is input from the clock counter 6e via l10 (44) and counting is performed.

As the hot gas refrigerant circulates through the heat exchange pipe (8), the ice around the pipe melts and is gradually discharged together with the water in the water tank, causing the temperature of the water temperature sensor (48) to rise and be detected by the water temperature sensor (410). When the temperature data obtained exceeds the thawing return temperature, the CPU (4:1) outputs a heating stop instruction instead of the heating operation instruction.
outputs a signal to the control signal output circuit f461 to switch the four-way valve @ and to stop the compressor 0. Based on this signal, a four-way valve switching signal and a compressor stop signal are output from the control signal output circuit (461), the four-way valve is switched, the compressor is forced to stop, and the deicing operation is stopped. If there is a large amount of ice, you can first press the thawing switch (51) and, for example, after 5 minutes, operate the drain valve to open it.
Alternatively, the drain valve 63) may be automatically operated.

In addition, the CPU (43) performs counting by inputting a count signal from the clock counter (G) via l10 (44) after the ice-melting operation starts, and calculates the count number and RO in advance.
It compares the count e for thawing recovery stored in M (411).Then, before the temperature data detected by the water temperature sensor (4110t/c exceeds the thawing recovery temperature), the CPU (43) When the count reaches the thawing return count, the CPU (43) outputs a heating stop instruction in the same way as above.As a result, the thawing operation is stopped and the state returns to the state before the thawing switch 691 was pressed. Return.

Therefore, by terminating the operation of the cold brine treatment equipment @ (1) and pressing the de-icing switch (Low), the operation control unit will operate to prevent the water temperature from decreasing due to the formation of ice in the heat exchange pipe (8). When the temperature data from the temperature sensor is lower than the deicing temperature, the four-way valve switches the heat exchange pipe (8) to act as a condenser, and the compressor a3 is forced to operate. For this reason, a high-temperature, high-pressure hot gas refrigerant is circulated through the heat exchange pipe (81) to exchange heat with the ice in the heat exchange pipe (8), and the ice is automatically and quickly melted and discharged together with the water or salt water in the water storage tank. Moreover, the cleaning work of the cooling storage device (1) after the end of operation can be easily carried out after quickly melting the ice, which can simplify the cleaning work and shorten the time. , the return to the thawing operation is automatically performed based on the water temperature set/temperature data or the preset thawing time, making the thawing process easier and less wasteful. The process can be completed without extensive heating.

Furthermore, after the temperature of the heat exchange pipe (8) reaches, for example, 50°C, which has a sterilization effect by circulating the hot gas refrigerant to the heat exchange pipe (8), the water temperature sensor decoy that detects the temperature is activated to thaw the ice. By stopping the operation, the surface of the heat exchange pipe (8) can also be sterilized at the same time.

Note that an electric heater such as a sheathed heater may be provided as a heating device on the surface of the heat exchange pipe (8) to heat the heat exchange pipe (8).

The temperature control of cooling storage device # (11) will be explained below.
When the low-temperature liquid refrigerant circulates, for example, salt water in the water storage tank (2) is cooled, and the temperature of the salt water gradually decreases.

At this time, the water temperature sensor (detects the temperature of 1 salt water and
PU (4:I is the temperature data sent via I/O (441) and RAM (42i stored in e.g. -2
Comparison with set temperature data in °C. Then, when the salt water temperature becomes lower than the set temperature and the temperature data becomes lower than the set temperature data, the CPU (43) outputs a signal to stop the operation of the compressor (131).Based on this signal, the sixth
At time (T1) in the figure, the compressor (13&) is stopped, the refrigerant circulation in the heat exchange pipe (8) is stopped, and after a while, the salt water temperature starts to rise gradually.

When the salt water temperature rises further and reaches the upper limit temperature that is, for example, 0.6°C higher than the set temperature at time (T,), the CPU (43
1 outputs a signal to start operation of compressor 0. Then, based on this signal, the compressor (13) starts operating and the heat exchange pipe (8) VC low temperature liquid refrigerant circulates, the salt water is cooled and the salt water temperature gradually decreases. Compressor u based on comparison with set temperature data
The salt water temperature is maintained approximately between the set temperature and the upper limit set temperature by the operation and stop of step 3.

After that, for example, by operating the compressor u3, the heat exchange pipe (
When the low-temperature liquid refrigerant flows to 8) and the temperature of the salt water gradually decreases, if frozen fish, for example, is thrown into the water tank (2) at time (T,), the temperature of the salt water decreases further. do. Then, at time (T4), when the salt water temperature reaches the set temperature, a signal is output to stop the operation of the vcCPU (from 43 to compressor 03) as described above, and the compressor 0 is stopped. However, the latent heat of the frozen fish further lowers the brine temperature. When the set temperature is determined in advance, when the salt water temperature reaches the lower limit temperature set in KRAM (4B) at time (T,), the salt water temperature data and the lower limit set temperature data are stored in the KRAM (4B). The CPU you were comparing (
43 switches the four-way valve so that the heat exchange pipe (8) acts as a condenser, and also outputs a signal to start the operation of compressor a.For this reason, the chain line in the refrigerant circuit in FIG. As shown in , the refrigerant circulates, high-temperature, high-pressure hot gas refrigerant circulates through the heat exchange pipe (8), and the salt water exchanges heat with the hot gas refrigerant through the heat exchange pipe (8). As the brine is heated, the temperature of the brine gradually rises.
When defrosting frozen food - Therefore, set the temperature to 15, for example.
The ice is melted by setting the temperature to ℃.

When time passes and the brine temperature reaches the set temperature at time (T,)K, the CPU (43) outputs a signal to stop the operation of the compressor (13).Therefore, hot gas is supplied to the heat exchange pipe (8). Refrigerant stops flowing and heating of the brine stops.

At this time, if the fish in the water storage tank are not completely thawed, the latent heat at the point cools the salt water again and the temperature gradually decreases. Then, when the salt water temperature reaches the lower limit temperature at time (T,), the CPU (43) outputs a signal to start the operation of the compressor αj.Based on this output, the compressor a starts operating, The hot gas refrigerant flows through the heat exchange pipe (8), where it exchanges heat with the salt water, and the temperature of the salt water gradually rises.

When the salt water temperature gradually rises to the set temperature at time (T,), the CPU (43) that was comparing the salt water temperature data with the set temperature data is operated to stop the operation of the compressor α. A signal is output.Then, the compressor α3 is stopped and hot gas refrigerant no longer flows into the heat exchange pipe (8).And, if the temperature of the fish has risen by the time the operation of the compressor αJ is stopped, When the salt water temperature gradually increases depending on the ambient temperature and reaches the upper limit temperature, the CPU 14:I outputs a signal to switch the four-way valve and also outputs a signal to start the operation of the compressor 03, and the four-way valve is turned off. The heat exchange pipe (8) K is replaced by the compressor (13).
As the low temperature liquid refrigerant circulates, the brine is cooled and its temperature gradually decreases. Thereafter, in the same way as above, cooling operation and heating operation of the salt water are performed as the salt water temperature changes, and therefore,
The salt water temperature is maintained approximately at the set temperature.

Therefore, when the temperature of the water or salt water in the water storage tank (1) reaches the upper limit temperature higher than the set temperature, the cooling operation is started, and when the temperature reaches the lower limit temperature lower than the set temperature, the heating operation is started. Not only when food whose temperature is higher than the set temperature is put into the tank (2), but also when food whose temperature is lower than the set temperature is put into the tank (2), external factors such as ambient temperature and frozen food etc. Regardless of internal factors, the temperature can be maintained at approximately the set temperature of water or salt water, and the food can be defrosted quickly while maintaining the quality of the food. Furthermore, the heating in the water storage tank (2) changes the refrigerant circulation in the refrigerant circuit shown in Figure 5,
This can be done by flowing a hot gas refrigerant through the heat exchange pipe (8), and there is no need to newly install a heating device such as a waterproof and anti-corrosion electric heater in the water tank (2) for the heating. Water or salt water can be heated and cooled through the heat exchange pipe (8), and the configuration and maintenance of the cooling storage device (1) can also be simplified.

Next, we will explain the operation of the cooling preservation device [ft (11) when food is immersed in cold brine in the water storage tank (11) and the food is treated with cold brine to maintain freshness. , and after karaoke and cold salt water treatment at the same time,
The soaking time for each fish is different: 5 minutes for horse mackerel, 10 minutes for mackerel, and 30 minutes for bonito. Second
And the keyboard (corresponding to the third basket 6υ, Zeng, and
Set the time using 5Fj. In other words, by operating the keyboard group, set 5 minutes to RAM (4Z) corresponding to the first basket f11J containing horse mackerel (fat). 10 minutes and 30 minutes corresponding to the device and the third basket are stored in RAM by operating the keyboard.
(Set to d.

After that, the first. Soak the second and third baskets, vessels, and (6) in salt water in the water tank (2), and operate the start switch (S) on the keyboard 6.This operation causes the CPU (
43) inputs and subtracts the count signal sent from the clock counter board through l10 (44) from each immersion time data from RAM (4S). Also, by the above subtraction, the immersion time data of each point The signal representing the remaining time is sent to the CPU.
(43) is output to the display unit (4!19) via I/(] 441. Then, the remaining time of soaking the fish arbitrarily specified using the keyboard (to) is displayed on the display unit (4).

Then, when the start switch (S) is operated, the first to third cages 6υ, (6a, a) corresponding to the first to third light emitting diodes (hereinafter referred to as LEDs) (
D, ), (Dz), and (Ds) are lit to indicate that the timer is operating.

After that, when time has elapsed since the start switch (S) was operated and the 5 minutes previously set for horse mackerel have passed, the horse mackerel soaking time data becomes zero and the CPU (4
3 operates based on this zero and outputs a signal for sounding the buzzer. This signal gives a sounding signal to the buzzer σO via l10 (44), and the buzzer σe sounds to notify that the horse mackerel soaking time has elapsed. Also, at this time, the first LED (D,) of the display section (451) is
13 to 110 (the lights are turned off by the lights-off signal given through 441. Then, the user hears the sound of the buzzer qO and takes out the first basket 11 containing horse mackerel) from the water tank (2).

As more time passes and the mackerel soaking time elapses, C.
Based on the operation of the PU (43), the buzzer q■ sounds to notify that the mackerel soaking time has elapsed.At this time, the 2nd L! ':D (D,) is turned off to indicate that the immersion time has ended. Then, the user takes out the second basket 163 containing the mackerel.

After that, when further time passes and the bonito soaking time has elapsed, the buzzer σα sounds in the same way as above, and the third LED (D,) on the display section (4!19) turns off, indicating that the bonito soaking time has elapsed. Notify that the process has ended.In the above example, fresh fish such as horse mackerel, mackerel, and bonito were explained.
When fresh fish or meat other than the above-mentioned fish is treated with cold brine, the soaking time is set respectively using the keyboard (to) and the treatment is started, as in the above embodiment, and the cold brine treatment is performed.

Therefore, when treating fish, meat, etc. with cold salt water using the cooling storage device (1), by setting the soaking time of a plurality of foods in advance, it is possible to treat a plurality of foods with different soaking times. However, cold brine treatment can be performed at the same time without changing the processing time and without compromising the quality of the food.

Next, the alarm device provided in this cooling storage device (1) will be explained based on the table shown in FIG. 7.

First, when an abnormality occurs in a unit circuit such as an operation control circuit of an electrical component, the buzzer συ sounds intermittently, and rU-RLj is displayed on the display section (c).

Further, if the temperature of water or salt water in the water tank (2) continues for a predetermined period of time, for example, 15 minutes, for example, several degrees higher or lower than the set temperature, the CPU (43) operates and the buzzer ff1 goes off. It sounds intermittently and the display (4
When HIJ is high at 51, [LOJ is displayed when HIJ is low. Furthermore, if the temperature of the condenser α is high due to an increase in ambient temperature or a narrow suction port, the capacitor sensor 0gl detects the temperature and sends the temperature data to the CPU (43) via the A/D (4η). given, CPU (43
The operation of the compressor (134) is stopped based on the operation of
C-ALJ is displayed. Further, if the water temperature sensor (48) is disconnected or short-circuited, temperature data outside the measurement temperature range is provided to the CPU (43) via the A/D (4η).

Then, the CPU (43) compares the measured temperature with the temperature data when the wire is disconnected or short-circuited, and when the temperature data is lower than the measured temperature range, a signal is sent to the CPU (43 to l10 ( 44).

Further, when the temperature data is higher than the measured temperature range, a signal for notifying a short circuit is sent to the CPU (from 43 to l10).
(44). Therefore, regardless of disconnection or short circuit, a signal that sounds the buzzer ff (I) is output, and the buzzer σ
[ will sound intermittently, and if there is a disconnection, rProLJ will be displayed on the display (4), and if there is a short circuit, rProLJ will be displayed.
HJ is displayed. Also, in the event of a disconnection or short circuit, the CP
U (43 outputs a signal to stop compressor α4,
The compressor 0 is stopped and the refrigerant circulation in the cooling pipe (8) is stopped.

In addition, if a failure such as a disconnection or short circuit occurs in the capacitor sensor (49), temperature data outside the measurement temperature range will be sent to the CP.
U(43 is input via l10(44). Then,
By outputting a signal for failure notification from the CPU (43),
The buzzer σO sounds intermittently, and the display (4 C[P
Rob J is displayed. Furthermore, water tank (2)
When the water or salt water becomes lower than the predetermined water level due to leakage caused by a malfunction of the drain valve q, current stops flowing between the drought sensor 6υ and the heat exchange pipe (8), and a drought signal is output from the drought sensor circuit 67). CP via l10 (44)
The buzzer σα is intermittently sounded by the operation of the CPU (43), and rL-OFJ is displayed on the display.

As described above, various abnormalities or malfunctions can be notified by the buzzer qI and the display section (c), and the user can quickly learn about the abnormalities and take countermeasures through the notification.

(G) Effects of the Invention Since the present invention is a cooling storage device configured as described above, the system is operated as follows.

By heating the heat exchange pipe with a heating device, the ice formed on the heat exchange pipe can be quickly melted and discharged together with the water or salt water in the water tank, making it possible to quickly clean the water tank after operation. This can be done easily after the ice has melted, which simplifies the cleaning process and shortens the time.In addition, the odor of food contained in the ice can be removed as the ice melts. It is discharged with water or salt water, eliminating any residual odor.

[Brief explanation of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is a schematic diagram of the operation control circuit of the cooling storage device, FIG. 2 is a side view of the cooling storage device, and FIG. 3 is a plan view of the cooling storage device. Figure 4 is a schematic sectional view of the same, Figure 5 is a schematic diagram of the refrigeration cycle, Figure 6 is a time transition diagram showing the operation control of the cooling storage device, and Figure 7 is an alarm list diagram showing various alarms. be. (11...cooling storage device, (2)...water storage tank,
(8)...Heat exchange pipe. Figure 5 - Ri1111

Claims (1)

[Claims] 1. In a cooling storage device that includes a heat exchange pipe immersed in water stored in a water storage tank and cools the water by flowing a low-temperature liquid refrigerant through the heat exchange pipe, water is stored in the water storage tank. A cooling storage device comprising: a heating device that heats the heat exchange pipe to melt ice formed on the surface of the heat exchange pipe during cooling operation.