JPH0791789A - Vacuum device used for cooler and thawing apparatus - Google Patents

Abstract

PURPOSE:To obtain a vacuum device used for a cooler and a thawing apparatus which can cool and preserve to cool food with a simple structure without entire anxiety of ozonosphere destruction and thaw a material to be thawed in an airtight vessel without contaminating vapor generating water introduced into the vessel. CONSTITUTION:A vacuum device used for a cooler and a thawing apparatus comprises an airtight vessel 21 having an exhaust port 23 to seal water 28, a vacuum pump 32 connected to the port 23 to evacuate in vacuum the vessel 21, and an agitating mechanism 36 for agitating to vaporize the water 28 in the vessel 21 to accelerate vaporization and uniformly cooling, wherein a material to be thawed is thawed by using low temperature steam generated by vacuum evacuation, and a material to be cooled is cooled by using residual water 28 to be cooled by deriving heat of vaporization thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device and a thawing device using a vacuum device for lowering the pressure in an airtight container to vaporize a liquid such as water in the airtight container at a low temperature.

[0002]

2. Description of the Related Art Generally, Freon 1 is used for frozen storage of foods.
Electric refrigerators and freezers that use a refrigeration cycle using 2 as a refrigerant are widely used in general households. However, Freon 1
No. 2 is regarded as a problem on a global scale as a cause of ozone layer depletion, and the development of alternative refrigerants is urgently needed.

By the way, in the natural world, the boiling point of a liquid such as water is uniquely determined by the pressure of the atmosphere, and the lower the pressure, the lower the boiling point. That is, the vaporization of water at an arbitrary low temperature depending on the pressure setting of the atmosphere, that is, the boiling phenomenon is obtained, further the heat of vaporization is taken from the water by this boiling phenomenon,
It is well known in the vacuum art that the remaining water is cooled.

FIG. 12 specifically shows the boiling phenomenon.
Is. FIG. 12 shows the vapor pressure on the horizontal axis and the boiling temperature on the vertical axis, and illustrates the relationship between the vapor pressure and the boiling temperature. Such a boiling phenomenon can be easily obtained by using a vacuum device. That is, when the air in the airtight container is discharged by using the vacuum pump, the pressure in the airtight container becomes low according to the discharge capacity of the vacuum pump. For example, if the internal pressure of a watertight container containing water is reduced by a vacuum pump by about 24 Torr, the water will boil at about 25 ° C. In a state where the airtight container is insulated and no heat quantity goes in and out of the outside, the heat of vaporization is taken from the energy of water to cause boiling, and the temperature of the remaining water is reduced by the amount of heat of vaporization released.

Explaining this with a concrete example, the airtight container storing 1 liter of water is evacuated by a vacuum pump having a discharge capacity of 1 g / min of water, and the pressure in the airtight container is set to about 24 Torr. If maintained, the heat of vaporization of water at 25 ° C will be 58
Since 3cal / g and the specific heat of water are 1cal / (g ° C), the heat quantity of 583cal per minute is taken from the water stored in the airtight container as the heat of vaporization, and 1g of water is vaporized and discharged. . Then, the average temperature of the remaining water drops by about 0.58 ° C. If this is continued, the water in the airtight container will gradually cool down to about 1
It drops about 6 ° C in 0 minutes. When it is further continued, the temperature of the water in the airtight container drops to 0 ° C., and the water condenses into ice.

Conventionally, such a vacuum device has been widely used in equipment for drying food and clothes and thawing frozen food. For example, in Japanese Examined Patent Publication No. 29440/1990 (hereinafter referred to as a first conventional example), an outer body of a dryer, in which a drying drum is rotatably housed, is connected to a vacuum pump to evacuate, and then the outside of the dryer. It is shown that the drying drum in the body is set to a low pressure so that the clothes can be dried at a low temperature (about 40 ° C.).

Further, for example, in JP-A-54-157805, JP-A-62-130673, and JP-A-62-130675 (hereinafter collectively referred to as a second conventional example), there is an airtight seal. Keep the boiling point of water low by sealing the water for steam generation and the object to be thawed in a container and evacuating the airtight container with a vacuum pump, so that the low temperature steam generated by this will thaw the object to be thawed. The ones shown are shown.

Further, for example, in JP-A-54-129145 and JP-A-55-54884 (hereinafter collectively referred to as a third conventional example), water for steam generation and an object to be thawed are sealed. It is shown that a stirrer such as a blower is provided in an airtight container, and low temperature steam generated by evacuation by a vacuum pump is forcibly stirred or sprayed on the object to be thawed.

Further, for example, in Japanese Unexamined Patent Publication No. 62-225201 (hereinafter, referred to as a fourth conventional example), a rotor having an evaporation surface for receiving a stock solution to be treated is provided in an airtight container connected to a vacuum pump. And seal the rotating shaft part of this rotor,
It is shown that this rotating shaft portion is rotationally driven from outside the airtight container in a non-contact manner by a magnetic levitation type rotation introducing device.

FIG. 13 shows a second conventional example (for example, Japanese Unexamined Patent Publication No. 62-62)
FIG. 13 is a schematic configuration diagram showing a thawing device using the vacuum device shown in Japanese Patent Laid-Open No. 130675). In the figure, 1 is an object to be thawed, 2 is a vacuum pump, 3 is a heater, 4 is a water temperature measuring thermistor, 5 is an electronic cooling element, 6 is a control circuit, 7 is an airtight container, 8 is a vacuum container exhaust pipe, and 9 is a vacuum container exhaust pipe. Is an exhaust valve, 10
Is a leak valve, 11 is an electronic cooling element fan, 12 is water for steam generation, and 13 is a vacuum pump exhaust pipe.

In such an apparatus, the object to be defrosted 1 and water for steam generation (hereinafter simply referred to as water) are placed in the airtight container 7.
When 12 is put in, the exhaust valve 9 is opened, the leak valve 10 is closed, the vacuum pump 2 evacuates the airtight container 7, and the electronic cooling element 5 is operated, the pressure in the airtight container 7 is about 5 Torr (5 mmHg). You can vacuum up to. The low-temperature steam generated from the water 12 condenses on the surface of the object to be defrosted 1 and gives latent heat of condensation to the object to be defrosted 1, so that the object to be defrosted 1 is gradually thawed. Then, thawing is performed with low temperature steam while maintaining the temperature of the surface of the object to be defrosted 1 at a low temperature near the freezing point.

[0012]

However, in the first conventional example in which the vacuum device is used for drying clothes, the purpose is basically to heat the clothes (about 40 ° C.), and It is difficult to apply as it is to a cooling device and a thawing device.

Further, the inside of the airtight container is evacuated by a vacuum pump to keep the boiling point of water low, and the low temperature steam generated thereby causes the thawed object to be thawed as shown in FIG. The conventional example 2 and the third conventional example in which the generated low temperature steam is forcibly stirred or sprayed on the object to be thawed by a stirring device such as a blower,
In each case, the thawed material is also stored in the same airtight container, so it is possible to prevent the drip oozing from the thawed material from contaminating the airtight container and the steam generation water contained in this container. There is a drawback that it does not exist.

Further, since the third conventional example is intended to efficiently attach the low temperature steam generated from the steam generating water to the object to be thawed by the stirring device, the steam generating water is used. Not for direct use,
Therefore, it is unavoidable that the steam generating water has temperature unevenness, and it cannot be applied to the cooling device as it is.

Further, a rotor provided with an evaporation surface for receiving the stock solution to be treated and a rotary shaft portion of the rotor are sealed in the airtight container, and the rotary shaft portion is kept outside the airtight container by a magnetic levitation rotation introducing device. The fourth conventional example, which is rotationally driven by contact, improves the sealing property of the airtight container, but since this apparatus itself basically heats the stock solution for treatment on the evaporation surface of the rotor, It is difficult to apply as it is to a cooling device and a thawing device.

In view of the above points, the present invention has no fear of depleting the ozone layer, can cool and store foods with a simple structure, and can store water for steam generation in an airtight container or in this container. An object of the present invention is to obtain a cooling device and a thawing device using a vacuum device that can thaw an object to be thawed without being contaminated.

[0017]

A cooling device using a vacuum device according to a first aspect of the present invention comprises an airtight container which has an exhaust port and seals a liquid such as water, and is connected to the exhaust port. A vacuum pump for evacuating the airtight container and a stirring mechanism for stirring the liquid in the airtight container are provided.

Further, in the cooling device using the vacuum device according to the second aspect of the present invention, the stirring mechanism has the polarity of N · S in the horizontal direction and is detachably installed at the bottom of the airtight container. A stirring blade that stirs the liquid, and a stirring motor that has a rotating body having a polarity of N / S in the horizontal direction and that is arranged outside the lower surface of the airtight container and that rotationally drives the stirring blade in a non-contact manner. Is.

A cooling device using a vacuum device according to a third aspect of the present invention is a grid-like structure for receiving an object to be cooled, which is immersed in the liquid in the airtight container, above the stirring blade in the airtight container. It is provided with a cooling shelf.

Further, in the cooling device using the vacuum device according to the fourth aspect of the present invention, the low temperature vapor generated by vacuuming is condensed and discharged in the middle of the pipe connecting from the exhaust port of the airtight container to the vacuum pump. The dehumidifying device is provided.

A cooling device using a vacuum device according to a fifth aspect of the present invention is provided with a flow rate sensor for detecting the flow rate of gas from the exhaust port of the airtight container.

A cooling device using a vacuum device according to a sixth aspect of the present invention includes an airtight container in which an object to be cooled and a liquid such as water for immersing the object to be cooled are sealed, and the inside of the airtight container. A vacuum pump for vacuuming, one end in the liquid in the airtight container, and the other end in communication with an injection port arranged in the upper part of the airtight container so as to face the object to be cooled, and the pipe And a liquid circulation pump that is installed in the middle of the above and circulates the liquid between the inside of the airtight container and the pipe.

A cooling device using a vacuum device according to a seventh aspect of the present invention includes an airtight container in which a liquid such as water is sealed, a vacuum pump for evacuating the airtight container, and an object to be cooled. Refrigerator to store, a refrigerant such as liquid or gas is sealed inside, a part of the liquid in the airtight container to pass through the liquid, the other part of the closed loop to pass through the refrigerator, and the middle of the pipe And a coolant circulation pump for circulating the coolant.

A cooling device using a vacuum device according to an eighth aspect of the present invention includes an airtight container in which a liquid such as water is sealed, a vacuum pump for evacuating the airtight container, and an object to be cooled. A refrigerator for storage, a pipe part of which passes through the liquid in the airtight container, one end of which communicates with an upper space of the refrigerator and the other end of which communicates with a lower space of the refrigerator, and a pipe of the pipe. It is provided with an in-compartment air circulation blower which is installed on the way and circulates the air inside the refrigerator between the inside of the refrigerator and piping.

A cooling device using a vacuum device according to a ninth aspect of the present invention includes an airtight container in which a liquid such as water is sealed, a vacuum pump for evacuating the airtight container, and an object to be cooled. A refrigerator for storing, one end in the liquid in the airtight container, the other end passing through the inside of the refrigerator to the upper space in the airtight container, the pipes respectively communicating, the pipe installed in the middle of the pipe, A liquid circulation pump for circulating the liquid between the inside of the airtight container and the pipe.

A cooling device using a vacuum device according to a tenth aspect of the present invention is an airtight container in which a liquid such as water is hermetically sealed, a refrigerator for storing an object to be cooled, and one end of which is inside the airtight container. A pipe communicating with the upper space and having the other end passing through the inside of the refrigerator and protruding to the outside, and a vacuum pump connected to the protruding portion of the pipe and vacuuming the inside of the airtight container via the pipe It is a thing.

A cooling device using a vacuum device according to an eleventh invention of the present invention is a refrigerator for storing an object to be cooled,
An airtight container which is integrated with the refrigerator and in which a liquid such as water is sealed, and a vacuum pump which evacuates the airtight container,
One having one end immersed in the liquid in the airtight container, the other end exposed in the refrigerator, and a cooler comprising a heat pipe in which pure water serving as a refrigerant is sealed at a low pressure Is.

A cooling device using a vacuum device according to a twelfth aspect of the present invention is an airtight container in which steam generating water is sealed, and a steam generating water in the airtight container is kept at a constant temperature. A heater, a vacuum pump for evacuating the inside of the airtight container, and a sealable defroster installed in the middle of a pipe connecting the vacuum pump and the airtight container and accommodating and holding an object to be defrosted It is a thing.

[0029]

In the first aspect of the present invention, when the pressure in the airtight container is lowered by the vacuum pump while stirring the liquid in the airtight container, the vaporization of the liquid is promoted and the heat of vaporization is deprived from the liquid, so that the airtightness is improved. The remaining liquid in the container is gradually and uniformly cooled. If this is continued, the temperature of the liquid in the airtight container will be 0 ° C.
And then condenses into ice or sherbet.

Further, in the second aspect of the present invention, since the stirring blade for stirring the liquid in the airtight container is detachably attached to the bottom of the airtight container and is rotationally driven from the outside without contact, the ice Since the stirring blade is not unduly applied during the production of the ice or sherbet and the stirring blade can be taken out together with the produced ice or sherbet, it is easy to take out the ice or sherbet or clean the airtight container.

Further, according to the third aspect of the present invention, by placing the object to be cooled in the liquid in the airtight container in a cooling shelf provided above the stirring blade in the airtight container,
The object to be cooled can be cooled without being affected by the rotation of the stirring blade.

Further, in the fourth aspect of the present invention, a dehumidifying device provided in the middle of a pipe connecting from the exhaust port of the airtight container to the vacuum pump condenses the low temperature vapor generated by vacuuming in front of the vacuum pump. , The amount of low temperature steam sucked into the vacuum pump is reduced to reduce the load on the vacuum pump.

Further, in the fifth aspect of the present invention, the amount of exhaust heat can be easily calculated based on the gas flow rate from the exhaust port of the airtight container detected by the flow rate sensor.

Further, in the sixth aspect of the present invention, since the gas in the airtight container is discharged by the vacuum pump while the liquid is jetted to the object to be cooled, the droplet adheres to the surface of the object to be cooled, and Vaporization is also promoted on the surface of the adhered object to be cooled, and heat of vaporization is directly taken from the object to be cooled, so that the object to be cooled is rapidly cooled.

Further, in the seventh aspect of the present invention, the refrigerant is enclosed in a closed loop pipe that passes through the liquid in the airtight container and the refrigerator, and is circulated by the refrigerant circulation pump while the vacuum pump is being circulated. The liquid in the airtight container is cooled by discharging the gas in the airtight container, and the refrigerant in the pipe is cooled by this cooling liquid, so that the selectivity of the refrigerant is expanded and the earth environment may be destroyed as a refrigerant. It is possible to use a liquid or a gas that does not have any.

Further, in the eighth aspect of the present invention, the air in the refrigerator is drawn in and circulated by the air circulating fan in the refrigerator into the pipe which passes through the liquid in the airtight container and communicates with both ends of the refrigerator. However, by discharging the gas in the airtight container with a vacuum pump, the liquid in the airtight container is cooled, and the air in the cold storage passing through the piping is directly cooled by this cooling liquid, so that the temperature of the air in the cold storage is efficiently increased. Can be kept at low temperature.

Further, in the ninth aspect of the present invention, the liquid cooled by discharging the gas in the airtight container is directly circulated in the pipe passing through the refrigerator by the liquid circulation pump, so that the refrigerator is Since the inside is cooled, the inside of the refrigerator can be more efficiently kept at a low temperature.

In the tenth aspect of the present invention,
The low-temperature steam generated by discharging the gas in the airtight container in which the liquid is sealed by the vacuum pump is discharged through the pipe passing through the inside of the refrigerator to cool the inside of the refrigerator. The circulation pump is unnecessary and the structure is simplified.

In addition, in the eleventh invention of the present invention,
One end of the heat pipe, in which pure water that serves as a refrigerant is sealed at a low pressure, is immersed in the liquid that is cooled by discharging the gas in the airtight container with a vacuum pump, and the other end of the heat pipe is stored in the refrigerator. By exposing the heat pipe to the evaporation part of the heat pipe, the inside of the refrigerator is cooled by this, so once the liquid in the airtight container is cooled, the inside of the refrigerator is cooled by the action of the heat pipe for a while. The cooling can be performed, and thus the operation time of the vacuum pump can be extended and the running cost can be kept low.

Further, in the twelfth invention of the present invention,
Since the defroster was installed independently between the airtight container that sealed the water for steam generation held at a constant temperature by the heater and the vacuum pump that evacuated the airtight container, the drip that oozes out from the object to be defrosted It is possible to prevent the steam generating water contained in the airtight container and the container from being contaminated.

[0041]

【Example】

Example 1. The present invention will be described below with reference to illustrated embodiments.
FIG. 1 is an explanatory view showing a partial cross section of a schematic configuration of a cooling device using a vacuum device according to a first embodiment of the present invention. In the figure, reference numeral 21 denotes an airtight container having an airtight opening 22 at an upper part thereof and an exhaust port 23 provided at an upper part of a peripheral side wall, and 24 covers the opening 22 of the airtight container 21 and a packing 2
It is a detachable lid that hermetically seals via 5, and is fixed by a clamp 27 attached to the upper edge flange of the airtight container 21 by a hinge 26. An ice-making container 29 storing water 28 is stored in the airtight container 21 so that it can be freely taken in and out.
A handle 31 used when putting in and out is provided.

Reference numeral 32 is a vacuum pump having an intake cylinder 33 and an exhaust cylinder 34. The intake cylinder 33 of the vacuum pump 32 and the exhaust port 23 of the airtight container 21 are connected by a connecting pipe 35.

Reference numeral 36 denotes a stirring mechanism for stirring the water 28 in the ice making container 29, which has a polarity of N · S in the horizontal direction, and the shaft portion is detachable and rotatable at the center of the bottom portion 37 in the ice making container 29. A stirring blade 38 installed in the airtight container, and a rotating body 39 having a horizontal N / S polarity for guiding the stirring blade 38. The stirring blade 38 is disposed outside the center of the lower surface of the airtight container 21. It is composed of a stirring motor 41 that is rotationally driven in a non-contact manner.

Reference numeral 42 denotes a flow rate sensor attached to the atmosphere side of the exhaust flow passage, that is, to the exhaust pipe 34 side of the vacuum pump 32. The flow rate sensor 42 is rotatably provided in the flow passage 43 by a rotary shaft 44 to control the air flow rate. An impeller 45 that proportionally increases the number of rotations per unit time and a pulse generator 46 that generates one pulse signal per one rotation of the impeller 45, and generate a signal of 10 pulses per liter of air flow rate. Is configured. Further, it has a control unit for counting the number of pulses of the pulse generator 46, and this control unit performs various calculations,
The configuration of this control unit is omitted.

Next, the operation of the cooling device using the vacuum device of this embodiment having the above-mentioned structure will be described. In this case, about 2 liters of water 28 is stored in the ice making container 29, and the vacuum pump 32 has a discharge capacity of about 2 liters / min on the atmosphere side of the exhaust stack 34 (at the atmospheric pressure when 18 g of water is vaporized). Since it has a volume of about 22.4 liters, it should be about 10 g / min in terms of water. First,
Put about 2 liters of water at a temperature of about 25 ° C into the ice making container 29,
The opening 24 of the airtight container 21 is covered with the lid 24, and the lid 24 is crimped and fixed to the hinge 26 side by the clamp 27. Then
The stirring motor 41 and the vacuum pump 32 are energized, and the stirring blade 3
8 is rotatably driven to stir the water 28 in the ice making container 29 so as to constantly flow, and the air in the airtight container 21 is exhausted through the exhaust port 23, the connecting pipe 35, the intake pipe 33, and the vacuum pump 32. Emission from 34 into the atmosphere. by this,
The pressure inside the airtight container 21 gradually decreases from 760 Torr, and the water 28 gradually evaporates from the surface. Where the water 28
Since the temperature is about 25 ° C, when the pressure in the airtight container 21 becomes about 24 Torr, the water 28 vaporizes not only from the surface but also from the inside, that is, it vaporizes while boiling, and the remaining water 28 takes heat of vaporization. The temperature drops. Since the water 28 is constantly stirred, the temperature drops almost uniformly.

Since the discharge capacity of the vacuum pump 32 is about 10 g / min in terms of water, the amount of heat taken from the stored water 28 is about 5800 cal / min. 5800 / (2
000-10) is approximately 3 (° C), and the remaining water 2
8 is cooled at a rate of about 3 ° C./min.

FIG. 2 concretely shows the progress characteristics of the temperature of the water. FIG. 2 shows operating time on the horizontal axis and water temperature on the vertical axis, and shows the rate of decrease in water temperature with respect to operating time. Strictly speaking, the amount of heat exchanged between the outer wall of the airtight container 21 and the atmosphere, and the heat of vaporization per gram due to the decrease in the temperature of the water 28 is slightly increased, so about 3 ° C / m
Although the cooling rate of in varies, after 8 minutes, the remaining water 28 is cooled to about 0 ° C. Then, as the evacuation is continued, the heat of vaporization is removed and the freezing starts partially. When the freezing starts, the stirring blade 38 receives resistance and the stirring becomes insufficient, but the ice making at 0 ° C. is completed in about 30 minutes from the start of the operation. When the evacuation is further continued, the surface temperature of the ice gradually decreases, and ice below the freezing point can be obtained.

During operation of the vacuum pump 32 (after the residual air in the airtight container 21 has been discharged at the beginning of operation), the airtight container 21
The amount of water vapor generated inside is detected by the flow rate sensor 42. That is, when the water vapor generated in the airtight container 21 passes through the flow passage 43 on the exhaust pipe 34 side of the vacuum pump 32, the impeller 45 of the flow rate sensor 42 is rotated, and the pulse generated by the pulse generator 46 at this time. The number N is counted by the control unit. From the count number N, the control unit calculates the amount of discharged water vapor V =
N / 10 [liter], drainage W = V / 1.24 [g
], The exhaust heat amount K = 583 × W is calculated, and the airtight container 21
The amount of heat deprived from the water 28 in the interior is predicted to judge the progress of ice making, and the vacuum pump 32 and the stirring motor 4 are automatically operated.
1 energization is controlled.

When the operation is stopped according to the judgment of the control unit, the ice making is completed, and air is gradually put into the airtight container 21 by a leak valve (not shown) to release the pressure, and then the lid 2 is closed.
4 is removed, and the ice making container 29 is taken out of the airtight container 21 to complete the production of ice. Since the stirring blade 38 is detachable from the bottom portion 37 in the ice making container 29, it can be easily taken out from the ice making container 29 together with ice, and the airtight container can be easily cleaned. Then, the stirring blade 38 can be easily plucked with a hard object such as a metal piece from the taken ice.

In this embodiment, the flow rate sensor 42 is attached to the atmosphere side of the exhaust flow passage, that is, inside the flow passage 43 on the exhaust pipe 34 side of the vacuum pump 32, but the present invention is not limited to this. For example, it may be provided in the connecting pipe 35 that connects the intake pipe 33 of the vacuum pump 32 and the exhaust port 23 of the airtight container 21, and in any case, the temperature T of the detection portion,
The relationship between the pressure P and the flow rate V can be calculated with P × V / T = constant,
The exhaust heat quantity can be easily calculated based on the gas flow rate from the exhaust port 23 of the airtight container 21.

Further, since the amount of water vapor discharged decreases as the ice making progresses, the operation can be controlled by judging the progress of the ice making from the temporal change of the pulse count number.

When freezing starts, the stirring blade 38 receives resistance to prevent its rotation, and the current value of the stirring motor 41 changes. Therefore, the operation of the stirring blade 38 is judged from the change in the current value. It can also be controlled.

Further, although the present embodiment has been described with respect to pure ice making, it goes without saying that this can also be applied to the production of ice cream and sorbet, and further, the airtight container 21.
After taking out the ice-making container 29 together with the stirring blade 38 from the inside, put fruits and vegetables such as watermelon and cucumber having water in the airtight container 21, or those with water droplets on the surface, and put a vacuum pump 32 in the airtight container 21. It is also possible to cool these fruits, vegetables, etc. by vacuuming with.

Example 2. FIG. 3 is an explanatory view showing a partial cross-section of a schematic configuration of a cooling device using a vacuum device according to a second embodiment of the present invention. The description is omitted. In the figure, 51 is water 2.
A stirring blade 38 is detachably and rotatably installed at the center of the bottom of the airtight container 21 in which 8 is stored. 52
Is a grid-shaped cooling shelf detachably provided at a predetermined height position above the stirring blade 38 in the airtight container 21, and the cooling shelf 5
The object to be cooled 53 such as a beverage or a food to be cooled, which is to be cooled, is placed on the surface 2 in a state of being immersed in the water 28, and the object to be cooled 53 is not affected by the rotation of the stirring blade 38. Can be cooled. Reference numeral 54 denotes a water temperature sensor that is installed on the bottom 51 of the airtight container 21 and detects the temperature of the water 28. Reference numeral 55 denotes a controller that controls the vacuum pump 32 and the stirring motor 41 based on the detection result of the water temperature sensor 54. Further, pipes and valves for water supply and drainage are connected to the airtight container 21,
Further, although a leak valve for adjusting the pressure inside the airtight container 21 after cooling is provided, the configuration thereof will be omitted. The other configuration is the same as that of the first embodiment.

Next, the operation of the cooling device using the vacuum device of this embodiment will be described. First, a beverage to be cooled such as juice or beer, or an object to be cooled 53 of fruit such as watermelon or melon is placed on a cooling shelf 52 in the airtight container 21, and a lid 24 is put on the opening 22 of the airtight container 21. Clamp 2
At 7, the lid 24 is pressure-fixed to the hinge 26 side. Next, when a power switch (not shown) is turned on, a predetermined amount of water 28 is supplied into the airtight container 21 under the control of the controller 55, and then the stirring motor 41 and the vacuum pump 32 are energized to generate the stirring motor 41. And the operation of the vacuum pump 32 is started,
The water 28 is agitated and the air containing water vapor in the airtight container 21 is discharged from the exhaust pipe 34. Then, as described in the first embodiment, the pressure inside the airtight container 21 gradually decreases, part of the water 28 is vaporized, and the temperature of the remaining water 28 decreases. Since the water 28 is constantly stirred, it draws heat from the object 53 to be cooled while flowing,
The object to be cooled 53 is cooled at a rate of about 5800 cal / min.

When the temperatures of the water 28 and the object to be cooled 53 gradually decrease and reach the desired cooling temperature of 6 ° C., the water temperature sensor 54
Based on this information, the controller 55 stops energizing the stirring motor 41 and the vacuum pump 32. When the operation of the stirring motor 41 and the vacuum pump 32 is stopped by the judgment of the controller 55, the cooling of the object 53 to be cooled to the desired cooling temperature (6 ° C.) is completed, and the leak valve (not shown) in the airtight container 21 is shown. After gradually adding air by (No.) to release the pressure, the lid 24 is removed and the object 53 to be cooled is taken out of the airtight container 21.

Example 3. FIG. 4 is an explanatory diagram showing a partial cross-section of a schematic configuration of a cooling device using a vacuum device according to a third embodiment of the present invention. The description is omitted. In the figure, reference numeral 61 denotes a net-like basket that is housed in the airtight container 21 so that it can be freely taken out and put in, and the object to be cooled 53 is housed in the basket 61 in a state in which a part thereof is immersed in the water 28. 62 is a circulating water inlet provided in the center of the bottom portion 51 of the airtight container 21, 63 is an injection port installed on one side of the airtight container 21 facing the object 53 to be cooled, and 64 is circulating water at both ends. Inlet 62 and jet 63
And 65 is a liquid circulation pump installed in the middle of the pipe 64. By driving the liquid circulation pump 65, the water 28 in the airtight container 21 is introduced into the pipe 64 from the circulating water inlet 62. To the cooled object 53 from the injection port 63 toward the cooled object 53,
3 can be sprayed on the part protruding from the water surface. 6
6 is the vacuum pump 3 based on the detection result of the water temperature sensor 54.
2 and the liquid circulation pump 65. Further, in this embodiment as well, as in the second embodiment, the airtight container 2
1 has a water supply / drainage function and a pressure adjusting function in the airtight container 21 after cooling, but these configurations are omitted. The other configuration is the same as that of the second embodiment.

Next, the operation of the cooling device using the vacuum device of this embodiment will be described. First, when the object 53 to be cooled is put in the airtight container 21, the lid 24 is set, and the power is turned on, the airtight container 21 is controlled by the controller 66.
After a predetermined amount of water 28 is supplied to the inside, the operation of the vacuum pump 32 and the liquid circulation pump 65 is started, the air containing water vapor in the airtight container 21 is discharged from the exhaust pipe 34, and the water 28 is discharged. Inhaled from the circulating water inlet 62,
It is sprayed like a shower from the spray port 63 through the pipe 64, and is sprayed on the object 53 to be cooled evenly. Then, the pressure in the airtight container 21 gradually decreases, part of the water 28 vaporizes, and the temperature of the remaining water 28 decreases. The water 28 having the lowered temperature is directly sprayed on the object 53 to be cooled, and when the object 53 to be cooled is touched, heat is efficiently taken from the object 53 to be cooled and the object 53 to be cooled is rapidly cooled.

By spraying the water 28,
Water droplets are attached to the surface of the portion of the object to be cooled 53 exposed from the water surface, and vaporization is promoted even in the portion of the object to be cooled 53 exposed from the water surface. Therefore, the heat of vaporization is directly taken from the object to be cooled 53,
The object 53 to be cooled is rapidly cooled.

Further, since the water 28 is circulated and sprinkled to cool the object 53 to be cooled, the heat exchange efficiency is extremely good.

When the temperatures of the water 28 and the object 53 to be cooled gradually decrease and are cooled to a desired temperature, the controller 55 energizes the vacuum pump 32 and the liquid circulation pump 65 based on the information from the water temperature sensor 54. Stop. When the operation of the vacuum pump 32 and the liquid circulation pump 65 is stopped by the judgment of the controller 55, the cooling of the object to be cooled 53 to the desired cooling temperature is completed, and a leak valve (not shown) in the airtight container 21.
After gradually adding air to release the pressure, the lid 24 is removed, and the object 53 to be cooled is taken out from the airtight container 21.

Example 4. FIG. 5 is an explanatory diagram showing a partial cross-section of a schematic configuration of a cooling device using a vacuum device according to a fourth embodiment of the present invention. The description is omitted. In the figure, 71 is a refrigerator in which the upper opening of the airtight container 21 is airtightly sealed and integrally provided on the upper portion thereof, and 72 is a cooled object (hereinafter referred to as a cooling object) stored in the refrigerator 71 for cooling storage. 73 is a door for putting the refrigerated preservation 72 in and out of the refrigerator 71, and 74 is a closed loop in which a refrigerant such as liquid or gas (in this embodiment, saline is used) 75 is enclosed. A part of the pipe is provided so as to pass through the water 28 in the airtight container 21, and the other part is provided so as to pass through the refrigerator 71. In addition, the pipe 74 includes the passage portion 74 in the airtight container.
A plurality of fins 76 are attached to the outer periphery of a, and the portion to which the fins 76 are attached constitutes the first cooler 77, and the passage part 74b in the refrigerator is formed in a shelf shape to form the second cooler 78. Are configured. Therefore, the cold preservation 7
2 is mounted on the 2nd cooler 78 which has a function of a food shelf. Reference numeral 79 is a refrigerant circulation pump that is installed in the middle of a portion 74c of the pipe 74 drawn to the outside of the back of the refrigerator and circulates the refrigerant (saline solution) 75 in the pipe 74.
1 is a water supply pipe for supplying water into the airtight container 21, 82
Is a valve provided in the middle of the water supply pipe, which is automatically controlled based on the detection result of a water level sensor (not shown) and is adjusted so that a predetermined amount of water 28 in the airtight container 21 is always held. Reference numeral 83 denotes an inside temperature sensor installed in the refrigerator 71 for detecting the inside temperature, and 84 denotes a vacuum pump 32 based on the detection results of the inside temperature sensor 83 inside the refrigerator 71 and the water temperature sensor 54 inside the airtight container 21, Stirring motor 41,
And a controller for controlling the refrigerant circulation pump 79. When the temperature of the water 28 in the airtight container 21 exceeds, for example, 0 ° C., the vacuum pump 32 is operated according to the information from the water temperature sensor 54, and the internal temperature of the refrigerator reaches 3 ° C. When it exceeds, it is set to operate the refrigerant circulation pump 79 by the information of the internal temperature sensor, but the operation start set temperature of the vacuum pump 32 (0 ° C) and the operation start set temperature of the refrigerant circulation pump 79 (3 ° C). Can be freely set by an operation panel (not shown). Reference numeral 85 in the figure denotes a refrigerant (saline solution) whose temperature has risen by cooling the inside of the refrigerator 71 by the second cooler 78.
75 is a return port to the first cooler 77, and 86 is a refrigerant (saline) 75 cooled by the first cooler 77 to a low temperature.
Is an outlet from the first cooler 77. The other configuration is the same as that of the second embodiment.

Next, the operation of the cooling device using the vacuum device of this embodiment will be described. First, when the power is turned on, the valve 82 is opened and the airtight container 21 is opened from the water pipe 81.
Water 28 is supplied therein, and when the amount of water supply reaches a predetermined amount, the valve 82 is closed. Then, under the control of the controller 84, the operation of the vacuum pump 32, the agitation motor 41, and the refrigerant circulation pump 79 is started, the water 28 is agitated, and the air containing the water vapor in the airtight container 21 is discharged from the exhaust pipe 34. At the same time, the refrigerant (saline solution) 75 circulates in the pipe 74, which is a closed loop. Then, the pressure in the airtight container 21 gradually decreases, and the water 28 stirred and flowing by the stirring blades 38 is promoted to vaporize, and the temperature of the remaining water 28 gradually decreases, and this continues. By this, water 28
Temperature drops to 0 ° C.

On the other hand, the refrigerant circulation pump 79 is used to connect the pipe 7
The refrigerant (saline solution) 75 circulating in the inside of the cooling tank 4 is cooled by the first cooler 77, and the outlet 86 of the first cooler 77.
From the refrigerator rear side portion 74c to the second cooler 78 in the refrigerator 71 in which the cooled preservation 72 is placed, cools the inside of the refrigerator 71 and the cooled preservation 72, and becomes a high temperature. It returns to the return port 85 to the cooler 77, and is cooled again by the first cooler 77. The circulation of the refrigerant (saline solution) 75 is continued by the refrigerant circulation pump 79 while the temperature inside the refrigerator 71 exceeds 3 ° C., and the cooled preservation product 72 is cooled and preserved.

Since the inside of the refrigerator 71 is in an air environment of atmospheric pressure, by opening the door 73, the cooled preservation 72 can be easily taken in and out.

In this embodiment, a refrigerant (saline solution) 75 is enclosed in a closed loop pipe 74 that passes through the water 28 in the airtight container 21 and the refrigerator 71, and is circulated by a refrigerant circulation pump 79. Meanwhile, by discharging the air containing water vapor in the airtight container 21 by the vacuum pump 32, the water 28 in the airtight container 21 is cooled, and the cooling water cools the refrigerant (saline solution) 75 in the pipe 74. Therefore, the selectivity of the refrigerant 75 is widened, and as the refrigerant 75, a liquid such as pure water or a gas such as air that is not likely to damage the air pollution or the global environment can be used.

Further, the second cooler 78 for cooling the inside of the refrigerator 71 may be provided with fins in order to increase the area of heat exchange with the air in the refrigerator, and by doing so, the heat exchange efficiency is further enhanced. Therefore, the cooling rate can be increased.

Example 5. FIG. 6 is an explanatory view showing a schematic cross-sectional view of a part of a cooling device using a vacuum device according to a fifth embodiment of the present invention. The description is omitted. In the figure, 91 is a pipe that communicates with the upper space of the refrigerator 71 at one end and the lower space of the refrigerator 71 at the other end, and a part of the pipe is provided so as to pass through the water 28 in the airtight container 21. Has been.
Further, in the pipe 91, a plurality of fins 76 are attached to the outer periphery of the passage portion 91a in the airtight container, and the portion to which the fins 76 are attached constitutes the cooler 92. Reference numeral 93 denotes a portion 91 of the pipe 91 which is pulled out to the outside of the back of the refrigerator.
It is an internal air circulation blower installed in the middle of b, and when the internal air circulation blower 93 is driven, the air in the refrigerator 71 (indicated by an arrow in the figure) causes The cooler 92 is sucked in from the circulating air inlet 94.
From the return port 95 to the cooler 92 which is the passage part 91a in the airtight container, and from the outlet 96 of the cooler 92 through the refrigerator rear side portion 91b to the circulating air discharge port of the end of the pipe 91 in the refrigerator upper space side. It is guided to the inside of the refrigerator 71 from 97 and is circulated again through the circulating air introduction port 94 to the cooler 92.
Reference numeral 98 denotes the internal temperature sensor 83 in the refrigerator 71 and the airtight container 2.
1 is a controller for controlling the vacuum pump 32, the stirring motor 41, and the in-compartment air circulation blower 93 based on the detection result of the water temperature sensor 54 in the refrigerator 1.
2 is a breathable net-like food shelf that holds 2. The other configuration is the same as that of the fourth embodiment.

Next, the operation of the cooling device using the vacuum device of this embodiment will be described. The operation of supplying the water 28 into the airtight container 21, the vacuum pump 32 and the stirring motor 41.
The operation of the (stirring blade 38) is the same as that of the fourth embodiment, and therefore its explanation is omitted. Further, here, it is assumed that the temperature of the water 28 in the airtight container 21 is lowered to 0 ° C. by the action of the vacuum pump 32, and the water 28 is stirred by the stirring blade 38 and flows. First, when the operation of the in-compartment air circulation blower 93 is started, the air in the refrigerator 71 is cooled by the cooler 92 immersed in the water 28, and passes from the outlet 96 of the cooler 92 to the refrigerator rear side portion 91b. While being introduced into the refrigerator 71 through the circulating air outlet 97 in the upper part of the refrigerator and flowing downward in the refrigerator 71, the inside of the refrigerator 71 and the cooled preserved material 72 are cooled and become high temperature, and the circulating air inlet in the lower part of the refrigerator becomes It is sucked from 94, is guided from the return port 95 to the cooler 92 to the cooler 92 which is the passage portion 91a in the airtight container, and is cooled again by the cooler 92. This circulation of air in the refrigerator is performed in the refrigerator 7
While the temperature in 1 exceeds 3 ° C., it is continued by the in-compartment air circulation blower 93 to cool and store the cold preservation 72.

In this embodiment, since the cooler 92 directly cools the inside air while circulating it, the inside air temperature can be efficiently kept at a low temperature.

Further, although there is air circulation in the refrigerator 71, since it is in the air environment of atmospheric pressure, there is no obstacle to the opening and closing of the door 73, and the cooled preserve 72 can be easily taken in and out.

Also in this embodiment, as in the case of the fourth embodiment, the operation start set temperature (0 ° C.) of the vacuum pump 32 and the operation start set temperature (3 ° C.) of the internal air circulation blower 93 are set as follows.
It can be freely set by an operation panel (not shown).

Example 6. FIG. 7 is an explanatory view showing a partial cross-section of a schematic configuration of a cooling device using a vacuum device according to a sixth embodiment of the present invention. The description is omitted. In the figure, 101 is a pipe which communicates with water 28 in the airtight container 21 at one end and communicates with the upper space in the airtight container 21 through the inside of the refrigerator 71 at the other end. The cooler 102 is formed by being formed into a shape. Therefore, the cold preservation 72 is placed on the cooler 102 having the function of a food shelf. Reference numeral 103 denotes a liquid circulation pump installed in the middle of a portion 101b of the pipe 101 that is pulled out to the outside of the back of the refrigerator. When the liquid circulation pump 103 is driven, the water 28 in the airtight container 21 flows from the cooling water outlet 104 to the pipe 101. It is sucked into the inside of the refrigerator, and the rear side portion 101b
After that, it is guided to the cooler 102 in the refrigerator 71 in which the cooled preservation 72 is placed, and the inside of the refrigerator 71 and the cooled preservation 72 is introduced.
Is cooled to a high temperature, returns to the inside of the airtight container 21 through the return port 105 to the upper space in the airtight container 21, and is cooled again by the action of the vacuum pump 32. 106 is a refrigerator 71
It is a controller that controls the vacuum pump 32, the stirring motor 41, and the liquid circulation pump 103 based on the detection results of the inside temperature sensor 83 inside and the water temperature sensor 54 inside the airtight container 21, and other configurations are the same as the embodiment. The same as 4.

Next, the operation of the cooling device using the vacuum device of this embodiment will be described. The operation of supplying water 28 into the airtight container 21, the vacuum pump 32 and the stirring motor 41.
The operation of the (stirring blade 38) is the same as that of the fourth embodiment, and therefore its explanation is omitted. Further, here, it is assumed that the temperature of the water 28 in the airtight container 21 is lowered to 0 ° C. by the action of the vacuum pump 32, and the water 28 is stirred by the stirring blade 38 and flows. First, when the operation of the liquid circulation pump 103 is started, the water 28 that has become a low temperature (0 ° C.) in the airtight container 21
The cooler 1 in the refrigerator 71 in which the cooled preservation 72 is placed from the cooling water outlet 104 through the refrigerator rear side portion 101b.
02, the inside of the refrigerator 71 and the cooled preservation 72 are cooled to a high temperature and dropped into the airtight container 21 from the return port 105 to the upper space in the airtight container 21 and cooled again by the action of the vacuum pump 32. To be done. The circulation of this water 28 is
While the temperature inside the refrigerator 71 exceeds 3 ° C., the liquid circulation pump 103 continues to cool and store the cold preservation 72.

In this embodiment, since the water 28 cooled by the action of the vacuum pump 32 is directly circulated in the pipe 101 passing through the inside of the refrigerator 71, the inside of the refrigerator is efficiently cooled and the inside of the refrigerator 71 is cooled. The stored material 72 can be cooled efficiently.

Also in this embodiment, the operation start set temperature (0 ° C.) of the vacuum pump 32 and the operation start set temperature (3 ° C.) of the liquid circulation pump 103 are set by an operation panel (not shown) as in the fourth embodiment. It can be set freely.

Example 7. FIG. 8 is an explanatory view showing a partial cross-section of a schematic configuration of a cooling device using a vacuum device according to a seventh embodiment of the present invention. The description is omitted. In the figure, 111 is a pipe which has one end communicating with the upper space in the airtight container 21 and the other end passing through the inside of the refrigerator 71 and protruding to the outside, and connected to the connecting pipe 35 connected to the intake pipe 33 of the vacuum pump 32. Then, the in-refrigerator passage portion 111a is formed in a shelf shape to form a cooler 112, and the cooled preserve 72 is placed on the cooler 112 having the function of the food shelf. Therefore, the vacuum pump 32 evacuates the inside of the airtight container 21 via the pipe 111. 113 is water 2
8, an outlet from the airtight container 21 of low temperature steam generated from
111b is a vertical flow path connecting the outlet 113 and the cooler 112, 114 is an exhaust port of water vapor that has become high in temperature by exchanging heat in the cooler 112, and 115 is an internal temperature sensor 83 in the refrigerator 71. The controller is a controller that controls the vacuum pump 32 based on the detection result of the water temperature sensor 54 in the airtight container 21, and the other configurations are the same as in the sixth embodiment.

Next, the operation of the cooling device using the vacuum device of this embodiment will be described. The operation of supplying water 28 into the airtight container 21 and the operation of the stirring motor 41 (stirring blade 38) will be described. Omit it. Further, here, the water 28 in the airtight container 21 has been operated since the vacuum pump 32 started to operate.
It is assumed that the operating time has passed until the boiling point at about 0 ° C. The low temperature steam generated by boiling at about 0 ° C. by the action of the vacuum pump 32 is discharged from the outlet 113 to the vertical flow path portion 11
After passing through 1b, it is guided to the cooler 112 in the refrigerator 71 in which the cooled preservation 72 is placed, cools the inside of the refrigerator 71 and the cooled preservation 72, becomes a high temperature, and reaches the connecting pipe 3 from the exhaust port 114.
5, exhaust pipe 34 through the intake pipe 33 and vacuum pump 32
Emitted into the atmosphere.

In this embodiment, the inside of the refrigerator 71 can be cooled by discharging the low temperature steam generated by the action of the vacuum pump 32 from the inside of the pipe 111 passing through the inside of the refrigerator 71. The refrigerant circulation pump, the in-compartment air circulation blower, and the liquid circulation pump described in Embodiments 4 to 6 are unnecessary, and the structure can be simplified.

Example 8. FIG. 9 is an explanatory view showing a partial cross-section of a schematic configuration of a cooling device using a vacuum device according to an eighth embodiment of the present invention, and parts having the same functions as those of the embodiments described above are designated by the same reference numerals. Is attached and the description thereof is omitted. In this embodiment, the airtight container 21 is arranged above the refrigerator 71. A plurality of heat pipes 121 are installed so as to relate to the refrigerator 71 and the airtight container 21, and the plurality of heat pipes 121 constitute a cooler 122.

The heat pipe 121 is arranged vertically, the upper end is immersed in the water 28 in the airtight container 21, the lower end is exposed in the refrigerator 71, and the pure water as a refrigerant inside is reduced in pressure. It is enclosed in. Therefore, the upper end of the heat pipe 121 is the condensing section 121a and the lower end is the evaporating section 1a.
21b. Further, fins 123 are provided on the exposed portion (evaporating portion) of the heat pipe 121 in the refrigerator to enhance the efficiency of heat exchange with the air in the refrigerator.

Further, in the refrigerator 71, a duct 124 and a fan 125 for circulating the air in the refrigerator are installed, and the air in the refrigerator is forced to the cooler 122 by the fan 125 in the middle of the circulation path. It is designed to be in contact.

Next, the operation of the cooling device using the vacuum apparatus of this embodiment will be described, but the description of the operation of supplying water 28 into the airtight container 21 and the operation of the vacuum pump 32 will be omitted. Further, here, it is assumed that the water 28 in the airtight container 21 is cooled to about 0 ° C. by the action of the vacuum pump 32. First, due to the action of the vacuum pump 32, about 0
The condensing part 121a of the heat pipe 121 is cooled by the water 28 cooled to 0 ° C. Thereby, the condensing unit 12
The refrigerant (pure water) in a gas state inside 1a is condensed and becomes a liquid and moves to the evaporation section 121b. Evaporator 121b
Then, heat is taken from the air in the refrigerator via the fins 123 and the taken heat is given to the refrigerant (pure water) in the liquid state, so that the refrigerant (pure water) in the liquid state takes heat of vaporization from the fins 123. Evaporate to become gas and move to the condenser 121a. Then, it is cooled again by the water 28 and condensed to become a liquid. By repeating this, the evaporator 121b and the fins 123 are cooled, the air inside the refrigerator circulated by the fan 125 is cooled, and the cooled preservation product 72 on the food shelf 99 is cooled.
Store cold.

In this embodiment, the airtight container 21 is once
When the water 28 in the heat pipe 12 is cooled for a while,
Since the inside of the refrigerator 71 can be cooled by the action of 1 itself, the operation stop time of the vacuum pump 32 can be extended and the running cost can be kept low.

Example 9. FIG. 10 is an explanatory view showing a partial cross-section of a schematic configuration of a defrosting apparatus using a vacuum apparatus according to a ninth embodiment of the present invention, and parts having the same functions as those of the above-described embodiments are designated by the same reference numerals. Is attached and the description thereof is omitted. In the figure, 131 is a sheathed heater installed in the bottom 51 of the airtight container 21 to heat the water 28 for steam generation and maintain it at a constant temperature, and 132 is a vacuum pump 32 and sheathed heater based on the detection result of the water temperature sensor 54. A controller 133 for controlling the energization condition of 131 is a defroster installed in the middle of the connecting pipe connecting the airtight container 21 and the vacuum pump 32, and one side upper part of the peripheral side wall of the defroster is the first connecting pipe 35a. To the airtight container 21 and to the second lower part on the other side of the peripheral side wall.
Are connected to the vacuum pump 32 by the connecting pipes 35b.

The thawing chamber 133 has an opening portion 134 which can be hermetically sealed at the upper part, and the opening portion 134 is covered with a detachable lid 136 which hermetically seals through a packing 135. The lid 136 is fixed by a clamp 138 attached to the upper edge flange of the thawing chamber 133 by a hinge 137. In addition, on one side upper part of the peripheral side wall of the defroster 133,
Exhaust port 23 of airtight container 21 via first connecting pipe 35a
And an exhaust port 141 connected to the intake cylinder 33 of the vacuum pump 32 via the second connecting pipe 35b is formed in the lower portion of the other side of the peripheral side wall. Further, inside the thawing cabinet 133, a breathable net-like thawed material shelf 142 is provided.
A frozen object 143 to be thawed, such as fish or rice, is placed on 42.

The vacuum pump 32 has the ability to evacuate the pressure inside the airtight container 21 to about 20 Torr, and the controller 132 controls the water 2 based on the information from the water temperature sensor 54.
When the temperature of 8 rises to 30 ° C, the sheath heater 131
Is set to stop energization of. The energization stop temperature (30 ° C.) of the sheathed heater 131 can be changed by an operation panel (not shown). Also in this embodiment, as in the above-described embodiments, the airtight container 2
1 has a water supply / drainage function and a pressure adjusting function in the airtight container 21 after thawing, but these configurations are omitted. Other configurations are the same as those of the embodiments described above.

Next, the operation of the thawing device using the vacuum device of this embodiment will be described. First, the lid 24 of the airtight container 21 is set, then the defrosted product 143 such as tuna is placed on the defrosted product shelf 142 in the defrosting container 133, and the lid 13 is placed.
When 6 is set and the power is turned on, the airtight container 21
After a predetermined amount of water 28 is supplied to the inside, the operation of the vacuum pump 32 is started, and the air containing the low-temperature steam in the airtight container 21 is discharged through the exhaust port 23, the first connecting pipe 35a, and the intake port 139.
Through the exhaust port 141, the second connecting pipe 35b, and the intake pipe 33 while touching the surface of the object to be defrosted 143, and then discharged from the exhaust pipe 34 into the atmosphere. Then, the pressure in the airtight container 21 gradually decreases, and the internal pressure becomes 3
As the water 28 approaches 0 Torr, the water 28
Heated by 1, the water temperature gradually rises to 30 ° C. When the water temperature exceeds 30 ° C., the controller 132 stops energizing the sheath heater 131 based on the information from the water temperature sensor 54. Therefore, low temperature steam of about 30 ° C. is constantly generated in the airtight container 21 due to the boiling phenomenon. The low-temperature steam is cooled when it comes into contact with the surface of the object to be thawed 143, and is condensed to give about 560 cal / g of heat of condensation to the object to be thawed 143. The low-temperature steam that has not been completely condensed is discharged into the atmosphere through the exhaust stack 34. On the other hand, the condensed water is
With the drip exuding from the surface of 43, it flows down to the bottom of the thawing chamber 133 and is stored.

In this embodiment, the defroster 133 is provided in the middle of the connecting pipe connecting the airtight container 21 and the vacuum pump 32.
Since they are arranged independently, in the airtight container 21,
The generated low-temperature steam is not mixed with the drip of the object to be thawed 143, the inside of the airtight container 21 and the water 28 are not contaminated, are always clean, and do not affect the quality of the object to be thawed 143. Furthermore, since it is thawed by low temperature steam at about 30 ° C., good quality thaw can be performed without denaturation of protein.

Example 10. FIG. 11 is an explanatory view showing a partial cross-section of a schematic configuration of a defrosting apparatus using a vacuum apparatus according to a tenth embodiment of the present invention. The description is omitted. In the figure, 15
Reference numeral 1 denotes a partition plate made of a heat insulating material that defines a water storage portion in the airtight container 21 into a storage portion 152 for water 28 for steam generation and a storage portion 154 for cooling water 153.
In addition to communicating with each other in the upper space in the airtight container 21, a sheath heater 131 for heating the water 28 and holding it at a constant temperature is installed at the bottom 51 in the storage portion 152 of the water 28. Reference numeral 155 is a pipe, one end of which is in the cooling water 153 of the storage portion 154, and the other end of which is in communication with the upper space of the storage portion 154 through the second connecting pipe 35b.
A plurality of fins 1 are provided on the outer periphery of the connecting pipe passage 155a.
56 is attached, and the part to which this fin 156 is attached constitutes the cooler 157. 158 is a pipe 155
Is a cooling water circulation pump installed on the way of the cooling water circulation pump 158. When the cooling water circulation pump 158 is driven, the cooling water 153 in the storage portion 154 is cooled by the action of the vacuum pump 32.
Is sucked into the pipe 155 through the cooling water outlet 159,
It is guided to the cooler 157 which is the passage 155a in the connecting pipe,
The vacuum pump 32 cools the low-temperature steam in the connecting pipe 35b toward the atmosphere side to cause dew condensation, and the temperature becomes high, so that the return port 161 to the upper space in the storage section 154 to the storage section 154.
It returns to the inside and is cooled again by the action of the vacuum pump 32. 162 is a drain hole for discharging the drain condensed in the cooler 157, 163 is a leak valve provided in the drain hole 162, which leaks the atmosphere into the connecting pipe 35b and is stored in the connecting pipe 35b. It has the function of discharging the existing drain into the atmosphere. 164 is a connecting pipe 3
5b is a stop valve which is provided at an intermediate position between the position where the cooler 157 is provided and the exhaust port 141 of the defroster 133 and which opens and closes the passage in the connecting pipe 35b. The stop valve 164 and the leak valve 163 are interlocked with each other, and operate if the drain is stored in the connecting pipe 35b by a predetermined amount, the stop valve 164 closes the passage of the connecting pipe 35b, and the leak valve 163 connects the drain hole 162 to the atmosphere. The drain is configured to be discharged. At the same time as the drain discharge operation, the energization of the vacuum pump 32 and the sheath heater 131 is stopped. That is, the cooler 157, the drain hole 162, the stop valve 1
64 and the leak valve 163, the dehumidifier 17
0 is configured.

Reference numeral 165 denotes a controller for controlling the vacuum pump 32, the sheath heater 131, and the cooling water circulation pump 158 based on the detection result of the water temperature sensor 54 and the drain discharge start signal and the drain discharge end signal.
Is set so that the energization of the sheath heater 131 is stopped when the temperature of the water 28 reaches 30 ° C., and when the drain discharge start signal is input, the vacuum pump 32 and the sheath heater 131 are supplied. When the energization is stopped and the drain discharge completion signal is input, the vacuum pump 32 and the sheath heater 131 are energized. In this embodiment also, the sheath heater 131
The energization stop temperature (30 ° C.) can be changed by an operation panel (not shown).

Reference numeral 166 controls the stop valve 164 and the leak valve 163 to cause the drain discharge operation to be performed at a predetermined time interval after the vacuum pump 32 has started its operation, and to cause the controller 165 to start the drain discharge operation. This is a valve controller that outputs a drain discharge start signal and outputs a drain discharge end signal to the controller 165 when the drain discharge operation is completed.

The cooling water 153 in the storage section 154 is not affected by the heating by the sheath heater 131 in the storage section 152, and the atmosphere of 30 Torr is maintained by the vacuum pump 32. Although there is no phenomenon), the water evaporates from the water surface, and the remaining water loses the heat of vaporization, and the temperature gradually decreases. The temperature reached by the cooling water 153 is 10 ° C. or lower, and the water 28 in the storage part 152 heated by the sheath heater 131 becomes low-temperature steam at 30 ° C., and the object to be defrosted 143 has been heated and the connecting pipe 35 b is completed. It has the ability to cool and condense low temperature steam of about 15 ° C.

In this embodiment as well, as in the above-described embodiments, each storage portion 15 in the airtight container 21.
2,154 water supply and drainage function and airtight container 21 after thawing
Although the internal pressure adjusting function is provided, these configurations will be omitted. Other configurations are the same as those of the embodiments described above.

Next, the operation of the thawing apparatus using the vacuum apparatus of this embodiment will be described. The thawing operation of the object 143 to be defrosted is the same as that of the above-mentioned ninth embodiment, and therefore its explanation is omitted and low temperature steam is used. The dehumidifying operation will be mainly described. First, the cooling water 153 in the reservoir 154, which is cooled to 10 ° C. or less by the action of the vacuum pump 32, is cooled by the cooling water circulation pump 158 from the cooling water outlet 159 to the pipe 155.
It is sucked in and guided to the cooler 157. Then, the vacuum pump 32 cools and condenses the low-temperature steam in the connecting pipe 35b toward the atmosphere side on the surface of the cooler 157,
It is dropped as drain into the connecting pipe 35b. The cooling water 153 in the pipe 155, which has become high in temperature due to this, flows from the return port 161 to the upper space in the reservoir 154 to the reservoir 154.
It returns to the inside and is cooled again by the action of the vacuum pump 32.

When the dripping drain is stored in the connecting pipe 35b by a predetermined amount, the vacuum pump 32 and the sheath heater 13 are connected.
1, the stop valve 164 closes the connecting pipe 35b, and in conjunction with this, the leak valve 16
3 opens the drain hole 162 to connect air in the atmosphere to the connecting pipe 3
The drain in 5b is leaked into the space downstream of the stop valve 164, and the stored drain is smoothly discharged into the atmosphere. When the drain discharge is completed, the vacuum pump 32 and the sheath heater 131 are energized again, the stop valve 164 opens the connecting pipe 35b, and in conjunction with this, the leak valve 163 closes the drain hole 162, and the object to be defrosted. The decompression operation of 143 is restarted.

In this embodiment, a dehumidifying device 170 including a cooler 157, a drain hole 162, a stop valve 164 and a leak valve 163 is provided in the middle of a pipe connected from the exhaust port 23 of the airtight container 21 to the vacuum pump 32. The low temperature steam generated by evacuation is dehumidified by the dehumidifier 1
Since 70 is used to cool and condense before the vacuum pump 32 and discharge it to the atmosphere as a drain, the amount of low-temperature steam sucked into the vacuum pump 32 can be reduced, and the discharge load of the vacuum pump 32 is reduced. It can be reduced as compared with the ninth embodiment. As a result, the vacuum pump 32 can be downsized and its capacity can be reduced.

In particular, in this embodiment, the single airtight container 2
Since low-temperature steam having a large temperature difference and cooling water are generated at the same time in 1 and are utilized, it is possible to obtain an inexpensive device having a simple structure.

In this embodiment, as the dehumidifying device, the cooler 157 in which the cooling water 153 is circulated is shown, but the dehumidifying device is not limited to this. For example, the low temperature steam to be discharged may be silica gel or the like. It may be adsorbed by a chemical substance or may be cooled and condensed by another cooling mechanism, and in any case, the same effect as that of this embodiment is obtained.

Further, it goes without saying that the dehumidifying device described in this embodiment can be applied to all of the other embodiments 1 to 9 described so far, by applying the dehumidifying device to the other embodiments 1 to 9. Also in 9, the vacuum pump can be downsized and the capacity can be reduced.

[0101]

As described above, according to the first aspect of the present invention, the pressure in the airtight container is reduced by the vacuum pump while stirring the liquid in the airtight container to cool the remaining liquid. Therefore, the vaporization of the liquid can be promoted, and the temperature of the liquid in the airtight container can be uniformly reduced to 0 ° C. to be condensed by continuing the pressure reduction in the airtight container by the vacuum pump, This makes it possible to produce ice and sherbet.

Further, according to the second aspect of the present invention, the stirring blade for stirring the liquid in the airtight container is detachably attached to the bottom of the airtight container and can be rotationally driven from the outside without contact. Therefore, the stirring blade is not unduly loaded during the production of ice or sherbet, and the stirring blade can be taken out together with the produced ice or sherbet, which makes it easy to take out the ice or sherbet or clean the airtight container.

Further, according to the third aspect of the present invention, since the cooling shelf is provided above the stirring blade in the airtight container, the object to be cooled is immersed in the liquid in the airtight container on the cooling shelf. It is possible to cool the object to be cooled without being affected by the rotation of the stirring blade.

Further, according to the fourth aspect of the present invention, since the dehumidifying device is provided in the middle of the pipe connected from the exhaust port of the airtight container to the vacuum pump, the low temperature vapor generated by vacuuming is vacuumed by the dehumidifying device. By condensing before the pump, the amount of low temperature vapor sucked into the vacuum pump can be reduced, and the load on the vacuum pump can be reduced.
As a result, the vacuum pump can be downsized and its capacity can be reduced.

Further, according to the fifth aspect of the present invention, since the flow rate sensor for detecting the gas flow rate from the exhaust port of the airtight container is provided, the gas flow rate from the exhaust port of the airtight container detected by this flow rate sensor is provided. Based on the above, the amount of heat exhausted can be easily calculated.

Further, according to the sixth aspect of the present invention, while the liquid in the airtight container is sucked up by the liquid circulation pump and jetted to the object to be cooled, the gas in the airtight container is discharged by the vacuum pump. , The droplets can be attached to the surface of the object to be cooled to promote vaporization even on the surface of the object to be cooled, whereby heat of vaporization can be directly taken from the object to be cooled, and the object to be cooled can be cooled rapidly. it can.

Further, according to the seventh aspect of the present invention, the refrigerant is enclosed in a closed loop pipe that passes through the liquid in the airtight container and the refrigerator, and is circulated by a refrigerant circulation pump while vacuuming. By discharging the gas in the airtight container by the pump, the liquid in the airtight container is cooled, and the coolant in the pipe is cooled by this cooling liquid. A liquid or gas that is not likely to be destroyed can be used.

Further, according to the eighth aspect of the present invention, the air in the refrigerator is drawn and circulated by the air circulation fan in the refrigerator into the pipe which passes through the liquid in the airtight container and communicates with both ends of the refrigerator. While discharging, the gas in the airtight container is discharged by the vacuum pump to cool the liquid in the airtight container,
Since this cooling liquid directly cools the inside air passing through the pipe, the inside air temperature can be efficiently kept low.

According to the ninth aspect of the present invention, the liquid cooled by discharging the gas in the airtight container is directly circulated in the pipe passing through the refrigerator by the liquid circulation pump. Since the inside of the refrigerator is cooled, the inside of the refrigerator can be kept at a low temperature more efficiently.

According to the tenth aspect of the present invention, the low temperature steam generated by discharging the gas in the airtight container in which the liquid is sealed by the vacuum pump is discharged through the pipe passing through the refrigerator. As a result, since the inside of the refrigerator is cooled, another circulation pump such as a refrigerant circulation pump is not required, and the structure is simplified.

According to the eleventh aspect of the present invention, one end of the heat pipe in which pure water serving as a refrigerant is sealed at a low pressure is cooled by discharging the gas in the hermetic container with a vacuum pump. Since the other end of the heat pipe is exposed to the inside of the refrigerator and the evaporating part of the heat pipe is placed inside the refrigerator to cool the inside of the refrigerator, once inside the airtight container, When the liquid is cooled, the inside of the refrigerator can be cooled by the action of the heat pipe itself for a while, so that the operation stop time of the vacuum pump can be extended and the running cost can be kept low.

According to the twelfth aspect of the present invention, a thaw chamber is provided between an airtight container in which water for steam generation kept at a constant temperature by a heater is sealed and a vacuum pump for evacuating the airtight container. Since they are installed independently, it is possible to prevent the drip bleeding from the object to be thawed from contaminating the airtight container and the steam generating water contained in the container.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a cooling device using a vacuum device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a temperature progression characteristic of water according to the first embodiment.

FIG. 3 is an explanatory diagram of a cooling device using a vacuum device according to a second embodiment of the present invention.

FIG. 4 is an explanatory diagram of a cooling device using a vacuum device according to a third embodiment of the present invention.

FIG. 5 is an explanatory diagram of a cooling device using a vacuum device according to a fourth embodiment of the present invention.

FIG. 6 is an explanatory diagram of a cooling device using a vacuum device according to a fifth embodiment of the present invention.

FIG. 7 is an explanatory diagram of a cooling device using a vacuum device according to a sixth embodiment of the present invention.

FIG. 8 is an explanatory diagram of a cooling device using a vacuum device according to a seventh embodiment of the present invention.

FIG. 9 is an explanatory diagram of a cooling device using a vacuum device according to an eighth embodiment of the present invention.

FIG. 10 is an explanatory diagram of a thawing device using a vacuum device according to a ninth embodiment of the present invention.

FIG. 11 is an explanatory diagram of a thawing device using a vacuum device according to a tenth embodiment of the present invention.

FIG. 12 is an explanatory diagram for explaining a relationship between vapor pressure and a boiling phenomenon.

FIG. 13 is a schematic configuration diagram of a conventional defroster using a vacuum device.

[Explanation of symbols]

 21 Airtight Container 23 Exhaust Port 28 Water (Liquid) 32 Vacuum Pump 35, 35a, 35b Connecting Pipe (Piping) 36 Stirring Mechanism 38 Stirring Blade 39 Rotating Body 41 Stirring Motor 42 Flow Rate Sensor 52 Cooling Shelf 53 Coolant 63 Discharge Port 64 , 74, 91, 101, 111 Piping 65 Liquid circulation pump 71 Refrigerator 72 Refrigerated preservation (object to be cooled) 75 Refrigerant (saline) 79 Refrigerant circulation pump 93 Air circulation fan 103 Liquid circulation pump 121 Heat pipe 122 Cooler 131 sheathed heater (heater) 133 defroster 143 defrosted object 170 dehumidifier

Claims (12)

[Claims] 1. An airtight container having an exhaust port and hermetically sealing a liquid such as water; a vacuum pump connected to the exhaust port to evacuate the airtight container; and an agitator for agitating the liquid in the airtight container. And a cooling device using a vacuum device. 2. A stirring mechanism having a horizontal N / S polarity, a stirring blade that is detachably installed at the bottom of an airtight container to stir a liquid, and has a horizontal N / S polarity. 2. A cooling device using a vacuum device according to claim 1, wherein the cooling device comprises a rotating body, and the stirring motor is arranged outside the lower surface of the airtight container and rotationally drives the stirring blades in a non-contact manner. 3. A vacuum apparatus according to claim 2, wherein a grid-shaped cooling shelf is provided above the stirring blade in the airtight container and receives the object to be cooled which is immersed in the liquid in the airtight container. Cooling device used. 4. A dehumidifying device for condensing and discharging low-temperature vapor generated by vacuuming is provided in the middle of a pipe connecting from an exhaust port of an airtight container to a vacuum pump. A cooling device using the vacuum device according to any one of 1. 5. A cooling device using a vacuum device according to claim 1, further comprising a flow rate sensor for detecting a gas flow rate from an exhaust port of the airtight container. 6. An airtight container in which an object to be cooled and a liquid such as water for immersing the object to be cooled are hermetically sealed, a vacuum pump for evacuating the inside of the airtight container, and one end in the liquid in the airtight container, Pipings that communicate with the injection ports arranged at the upper part of the airtight container with the other end facing the object to be cooled, and the liquids between the inside of the airtight container and the pipes installed in the middle of the pipes. A cooling device using a vacuum device, characterized in that the cooling device is provided with a liquid circulation pump for circulating the liquid. 7. An airtight container in which a liquid such as water is hermetically sealed, a vacuum pump for evacuating the inside of the airtight container, a refrigerator for storing an object to be cooled, and a refrigerant such as a liquid or a gas sealed inside. A closed loop, one part passing through the liquid in the airtight container and the other part passing through the refrigerator; and a refrigerant circulation pump installed in the middle of the pipe to circulate the refrigerant. A cooling device using a characteristic vacuum device. 8. An airtight container in which a liquid such as water is sealed, a vacuum pump for evacuating the airtight container, a refrigerator for storing an object to be cooled, and a part of which passes through the liquid in the airtight container. At the same time, one end communicates with the upper space inside the refrigerator and the other end communicates with the lower space inside the refrigerator. A cooling device using a vacuum device, comprising: an internal air circulation blower that circulates between the chambers. 9. An airtight container in which a liquid such as water is sealed, a vacuum pump for evacuating the airtight container, a refrigerator for storing an object to be cooled, one end in the liquid in the airtight container and the other end A pipe that passes through the refrigerator and communicates with the upper space of the airtight container, and a liquid circulation pump that is installed in the middle of the pipe to circulate the liquid between the airtight container and the pipe. A cooling device using a vacuum device characterized by comprising: 10. An airtight container in which a liquid such as water is sealed, a refrigerator for storing an object to be cooled, one end communicating with an upper space in the airtight container, and the other end passing through the refrigerator to the outside. A cooling device using a vacuum device, comprising: a projecting pipe; and a vacuum pump connected to the projecting portion of the pipe to evacuate the inside of the airtight container via the pipe. 11. A refrigerator for storing an object to be cooled, an airtight container which is integrated with the refrigerator and in which a liquid such as water is sealed, a vacuum pump which evacuates the airtight container, and the airtight one end. It is immersed in the liquid in the container, is exposed at the other end in the refrigerator, and is provided with a cooler composed of a heat pipe in which pure water serving as a refrigerant is sealed at a low pressure. Cooling device using a vacuum device. 12. An airtight container hermetically sealing water for steam generation, a heater for keeping the water for steam generation in the airtight container at a constant temperature, a vacuum pump for evacuating the airtight container, and the vacuum pump. A defrosting apparatus using a vacuum device, comprising: a defrosting chamber which is installed in the middle of a pipe connecting the airtight container and which is capable of holding and holding an object to be defrosted.