JP2003302116A - Cold and heat insulation apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To expand a storage space, and to save the power. <P>SOLUTION: A cold and heat insulation apparatus comprises one system, and has an intake fan 21, a compressor 22, a primary heat exchanger 23 and a secondary heat exchanger 24, and an expansion turbine 25. Outside air is taken into the primary heat exchanger 23 by the intake fan 21, the outside air is heat-exchanged with high-temperature and high-pressure air from the compressor 22 in the primary heat exchanger 23, and generated in hot air, and the hot air is fed to a heating chamber 11. Air from the compressor 22 is passed through the heat exchangers 23 and 24 and cooled, and further passed through the expansion turbine 25 to generate cold air of low-temperature at the atmospheric pressure, and the generated cold air is fed to a cooling chamber 12. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold insulation / heat insulation device that performs both heating and cooling.

[0002]

2. Description of the Related Art For example, in vending machines for canned juice, both cold drinking water and warm drinking water are prepared. Such a vending machine is divided into a heating chamber 1 and a cooling chamber 2 as shown in FIG. 5, and a heating chamber 1 and a machine room 3 provided at the bottom of the cooling chamber 2 as shown in FIG. A heating device 4 for heating the greenhouse 1 and a cooling device 5 for cooling the cooling chamber 2 are provided.

The heating device 4 energizes the heater to heat the greenhouse 1.
The product 9 is warmed by heating. Cooling device 5
Is a refrigerant such as CFCs enclosed inside, which is adiabatically compressed by the compressor 6 to a high pressure, and then reaches the condenser 7 to radiate the condensation heat and liquefy it, and then by a decompression means (not shown). The reduced pressure causes adiabatic expansion to a low temperature and low pressure. Then, the low-temperature and low-pressure refrigerant further reaches the evaporator 8 and takes the heat of evaporation to generate cooling air, which is sent to the cooling chamber 2 to cool the product. On the other hand, the refrigerant cooled by the evaporator 8 returns to the compressor 6, and the same cycle is repeated thereafter.

[0004]

By the way, since the vending machine described above is provided with two systems of the cooling device 5 and the heating device 4, the space between the heating chamber 1 and the cooling chamber 2 is restricted. There was a problem that the receiving and storage space became smaller. In particular, the cooling device 5 requires a compressor 6, a condenser 7, an evaporator 8 as well as a pressure reducing means, a pipe 5a, etc., and thus has a large number of components, and it is difficult to make the installation space of the machine room 3 small. It was In addition, if the cooling device 5 and the heating device 4 are provided independently of each other, there is a problem that the power consumption is accordingly increased and the running cost rises. Moreover, since the cooling device uses Freon as a refrigerant, it is not preferable from the environmental viewpoint.

The present invention has been made in consideration of such circumstances, and an object thereof is to obtain both functions of cooling and heating, and to expand a storage space and save power. It is to provide a cool / heat-retaining device.

[0006]

In order to achieve the above object, the present invention proposes the following means. The invention according to claim 1 is a cold-retaining / heat-retaining device that generates cold air and warm air supplied to a cooling chamber and a warming room in a single system, respectively. And warm air generating means for generating warm air to be fed into the cooling chamber, and cold air generating means for further adiabatically expanding the low-temperature and high-pressure air to generate cold air to be fed into the cooling chamber.

According to the cold / warm device according to the present invention,
Since the warm air generating means for supplying warm air to the greenhouse and the cool air generating means for supplying cold air to the cooling chamber are configured in one system,
The space of the heating chamber and the cooling chamber is not limited, the storage space can be expanded, and since it is a single system, the power consumption can be reduced and the running cost can be reduced.

According to a second aspect of the present invention, in the cool / warm apparatus according to the first aspect, the warm air generating means includes a compressor that generates high temperature and high pressure air, and an intake body that takes in outside air.
A heat exchanger for exchanging heat of the high temperature and high pressure air from the compressor with the outside air taken in by the intake body and supplying it to the cold air generating means, wherein the cold air generating means comprises an expansion turbine. And

According to the cold / warm device of the present invention,
The outside air can generate warm air by exchanging heat with the high-temperature and high-pressure air from the compressor in the heat exchanger, and the high-temperature and high-pressure air is passed through the heat exchanger to the expansion turbine to generate cool air. As a result, the warm air and the cold air can be accurately generated.

According to a third aspect of the present invention, in the cool / warm device according to the second aspect, the compressor and the expansion turbine share a rotating shaft. According to the cold insulation / heat insulation device according to the present invention, not only the storage space is expanded by sharing the rotating shaft, but also the energy recovered from the expansion turbine is supplied as a part of the drive source of the compressor to save power. Can be realized even more.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an automatic vending machine to which a cool / heat insulating device according to an embodiment of the present invention is applied, and FIGS. 1 and 2 are a front view and a side sectional view of the automatic vending machine. 3 is a piping diagram showing a cold insulation / heat insulation device installed in the vending machine. The vending machine 10 of this embodiment is provided with a heating chamber 11 and a cooling chamber 12 as shown in FIG. 1, and a machine room 13 is provided under the heating chambers 11 and 12, and as shown in FIG. To greenhouse 11
A heat retention / heat retention device 20 is provided for cooling the cooling chamber 12 while maintaining the temperature.

As shown in FIG. 3, the cold insulation / heat insulation device 20 is composed of one system, and includes an intake fan (intake body) 2
1. Compressor 22 and primary heat exchanger 23 as heat exchange means
And a secondary exchanger 24 and an expansion turbine 25.
Then, the intake fan 21 changes the outside air to the primary heat exchanger 2
3 is heated in the primary heat exchanger 23 by being heat-exchanged with the high-temperature and high-pressure air generated by the compressor 22 in the primary heat exchanger 23 to generate warm air, and the generated warm air is supplied to the heating chamber 11. It is supposed to be done.

On the other hand, the high-temperature and high-pressure air from the compressor 22 passes through the primary heat exchanger 23 to exchange heat with the outside air,
After being condensed and cooled as high-pressure air, it is further cooled by passing through the secondary heat exchanger 24, and the cooling air passes through the expansion turbine 25 to undergo adiabatic expansion and further cool air at low temperature and atmospheric pressure. The generated cold air is supplied to the cooling chamber 12.

When high-pressure air is introduced by rotating at high speed, the expansion turbine 25 cools the air by abruptly reducing it to atmospheric pressure and adiabatically expanding it. In that case, the motor 26 of the compressor 22 is installed coaxially with the expansion turbine 25. Then, after the cool air discharged from the cooling chamber 12 is used for heat exchange of the secondary heat exchanger 24,
It is supplied to the compressor 22 again, and thereafter, heating and cooling are repeated through the same path.

Therefore, in the cold / warm device 20, the intake fan 21, the compressor 22, and the primary heat exchanger 23 exchange the heat of the outside air with the high-temperature and high-pressure air to generate the warm air to be supplied to the greenhouse 11. It is provided with a generation unit and a cold air generation unit that adiabatically expands low-temperature high-pressure air by the expansion turbine 25 to generate cold air to be supplied to the cooling chamber 12, and the warm air generation unit and the cold air generation unit circulate air. Configure the system. 2 and 3, reference numeral 27 is a duct piped between the secondary heat exchanger 24 and the expansion turbine 25.

Since the vending machine 10 of this embodiment is constructed as described above, the motor 26 and the intake fan 21 are
When the motor 22 is operated by being energized, the motor 22 drives the compressor 22, and the high-pressure and high-temperature air flows into the primary heat exchanger 23 by the compressor 22. At that time, the intake fan 21 takes in the outside air into the primary heat exchanger 23, and the outside air is heat-exchanged with the high-temperature and high-pressure air from the compressor 22 in the primary heat exchanger 23 to generate and generate warm air. Warm air is supplied to the heating chamber 11 as indicated by arrow A in FIG. At this time, when the outside air taken in is normal temperature and the air discharged from the compressor 22 is about 90 ° C., the outside air is heated to about 70 ° C. by the primary heat exchanger 23, so that the heating chamber 1
In 1, the commodity 9 such as a can that is stored can be warmed.

On the other hand, when the high-temperature and high-pressure air discharged from the compressor 22 is heat-exchanged with the outside air by the primary heat exchanger 23,
The high temperature air becomes low temperature and high pressure, and when the high pressure air is sent to the expansion turbine 25 after being further cooled through the secondary exchanger 24, the expansion turbine 25 adiabatically expands the air to cool the air. The generated cool air is supplied to the cooling chamber 12 as indicated by an arrow B in FIG. In this case, the air from the compressor 22 passes through the primary heat exchanger 23 to be cooled to about 50 ° C., and when the secondary heat exchange 24 lowers the temperature to about 20 ° C., the expansion turbine 25 brings the temperature to about −5 ° C. Since it is cooled, it is possible to cool the products stored in the cooling chamber 12.

As described above, the intake fan 21, the compressor 22, and the primary heat exchanger 23 of the cold / warm device 20 exchange heat with the high-temperature and high-pressure air to generate warm air to be supplied to the greenhouse 11. Since the low temperature and high pressure air is adiabatically expanded by the expansion turbine 25 to generate the cold air to be supplied to the cooling chamber 12, the warm air to be supplied to the warming chamber 11 and the cold air to be supplied to the cooling chamber 12 are reliably generated in one system. be able to.

Therefore, since the installation space of the machine room 13 can be made small, the heating device 4 as in the conventional example.
It becomes unnecessary to install the cooling device 5 and the cooling device 5,
The storage space of the warming greenhouse 11 and the cooling chamber 12 is not limited, and the storage space can be expanded, and the high-temperature exhaust heat in the cooling system of one system is used to heat the space. Electric power can be reduced and running costs can be reduced.

Moreover, the cold / warm device 20 is composed of a closed system in which the air discharged from the compressor 22 is returned to the compressor 22 again. By using the air as a medium, the cold / warm heat is maintained. Therefore, not only is there no possibility of polluting the environment, but it is also excellent in safety because there is no need to use high pressure as in the case of CFCs.

The outside air can generate warm air only by the heat exchange between the high temperature and high pressure air from the compressor 22 and the primary heat exchanger 23, and the high temperature and high pressure air is guided to the expansion turbine 25. As a result, cold air can be generated, so that both warm air and cold air can be accurately generated. In addition, the compressor 22 and the expansion turbine 25 are installed coaxially for compactness, and the power recovered from the expansion turbine is used as a part of the drive source of the compressor, which also expands the storage space. Further, it is possible to further reduce the power consumption. Further, the primary heat exchanger 23 and the secondary heat exchanger 2 are provided between the compressor 22 and the expansion turbine 25.
4, the high-temperature high-pressure air from the compressor 22 is heat-exchanged in a two-stage configuration and sent to the expansion turbine 25, so that the heat balance of the air is good, and the air can be cooled and heated smoothly.

In the illustrated embodiment, the cold / heat-retaining device 20 is applied to the vending machine 10, but the invention is not limited to this. For example, as shown in FIG. It can also be used as a cold / warm car. 4, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals. Therefore, in the present invention, it is extremely beneficial to apply the invention to the ones that perform cold keeping and warm keeping at the same time.

[0023]

As described above, according to the invention of claim 1, the warm air generating means for supplying warm air to the warming room and the cold air generating means for supplying cool air to the cooling chamber are configured in one system. As a result, the storage space can be expanded, and the power can be saved.

According to the second aspect of the present invention, the outside air can be generated as warm air by simply exchanging the high temperature and high pressure air from the compressor with the heat exchanger, and the high temperature and high pressure air is guided to the expansion turbine. As a result, cold air can be generated, so that the effect of accurately generating both warm air and cold air can be obtained.

According to the third aspect of the present invention, it is possible to reduce the size by installing it coaxially, and the power recovered by the expansion turbine is used as a part of the drive source of the compressor, so that the storage space is expanded. It is possible to obtain the effect that not only power saving but also power saving can be realized.

[Brief description of drawings]

FIG. 1 is a front view showing an automatic vending machine to which a cool / warm device according to an embodiment of the present invention is applied.

FIG. 2 is a side sectional view of FIG.

FIG. 3 is a piping diagram showing a cold insulation / heat insulation device.

FIG. 4 is an explanatory diagram showing a vehicle equipped with a cold insulation / heat insulation device.

FIG. 5 is a front view showing an automatic vending machine provided with a conventional cold / heat retaining device.

FIG. 6 is a side sectional view of FIG.

[Explanation of symbols]

10 vending machines 11 heating greenhouse 12 Cooling chamber 13 Machine room 20 Cooler / heat retainer 21 Intake fan (intake body) 22 compressor 23 Primary heat exchanger 24 Secondary heat exchanger 25 expansion turbine

Claims (3)

[Claims] 1. A cool / warm device for generating cold air and warm air supplied to a cooling chamber and a warming room in a single system, wherein warm air is exchanged with air for sending warm air to the warming room. A cold / warm device, comprising: warm air generating means and cold air generating means for adiabatically expanding the air to generate cold air to be sent to a cooling chamber. 2. The cool / warm apparatus according to claim 1, wherein the warm air generating means includes a compressor that generates high temperature and high pressure air, an intake body that takes in outside air, and high temperature and high pressure air from the compressor. A cool / heat-retaining device comprising: a heat exchanger that exchanges heat with the outside air taken in by the intake body and supplies the cold air to the cold air generating means, and the cold air generating means is an expansion turbine. 3. The cold insulation / heat retention apparatus according to claim 2, wherein the compressor and the expansion turbine share a rotating shaft and are integrated with each other.