JP2001235180A - Ventilation cooling method and apparatus using natural ice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation cooling method and apparatus which is suitable for environmental preservation and capable of drastically reducing the quantity of energy and its cost required directly and indirectly for cooling. SOLUTION: Ice is produced by sucking into and discharging out of an ice making chamber for making and storing outdoor fresh air having a temperature below the freezing point. Fresh air having a temperature exceeding 0 deg.C is cooled and dehumidified by the latent heat of fusion of the ice and the cool air thus obtained is used as a cold source for cooling. The cool air is blown from the ice storing chamber to a cooling space 5 to ventilate the air in the cooling space.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cooling method and a cooling device suitable for energy saving.

[0002]

2. Description of the Related Art An increase in energy consumption of a cooling device using electricity, gas, etc., an increase in cost due to this increase,
Indoor air pollution due to air circulation (eg house dust,
Odor, proliferation of respiratory bacteria, etc. In order to solve various problems such as depletion of the ozone layer due to chlorofluorocarbon gas used as a refrigerant and global warming due to alternative chlorofluorocarbon gas, a cooling device using snow is disclosed in, for example, JP-A-7-293936.
JP-A-7-243739, JP-A-8-30380
No. 8, JP-A-10-292931 and the like. These inventions basically collect and store snow in an insulated environment, and use the cold air of the snow as a cooling source for cooling. Further, for example, there is a cooling device using cold air of ice as proposed in Japanese Patent Application Laid-Open No. 8-35691. The present invention uses cold air of ice produced by electric power at midnight, which is less likely to be used indoors and has a low electricity cost, as a cold heat source for daytime cooling.

[0003]

In the case where the cold air of snow is used as a cooling heat source for cooling, in a region where the amount of snow is small, the snow must be transported from a distant place. Energy consumption and transportation costs are necessary for cooling. In other words, although the cooling itself uses the cool air of snow, energy such as electric power or gas is not directly needed, but as mentioned above, the energy and cost of transporting the snow are indirect as running costs for cooling every season. Because it depends on
Virtually no energy savings or cost savings, and environmental impacts from the emissions from snow-carrying trucks. In addition, the wastewater treatment of the melted snow also required drainage equipment and running costs for each season. In addition, when the cold air of ice is used as a cooling heat source for cooling, electricity costs are still lower than in the daytime. It does not mean that the usage is reduced and does not actually achieve the realization of energy saving.

Accordingly, an object of the present invention is to provide a ventilation cooling method and a ventilation cooling apparatus which can greatly reduce the amount of direct and indirect energy required for cooling and the cost thereof, and are suitable for environmental protection.

[0005]

In order to achieve the above-mentioned object, the technical means of the present invention employs a technique in which a minus external air is sucked into and exhausted from an ice storage chamber 1 for making and storing ice. The outside air having a temperature exceeding 0 ° C. is cooled by the latent heat of melting of the ice, and the cool air obtained by dehumidification is used as a cooling heat source for cooling. The cool air is sent from the ice storage room 1 to the cooling space 5, and the cooling space 5 is cooled. The ventilation cooling method that ventilates the air. Here, the temperature exceeding 0 ° C. is any temperature equal to or higher than the temperature at which ice melts, and in a specific embodiment of the present invention, any temperature in an outside air environment requiring cooling. is there.

[0006] The invention according to claim 2 is the invention according to claim 1.
The present invention proposes an apparatus suitable for carrying out the ventilation and cooling method of the present invention. The technical means includes: an ice storage chamber 1 for ice making and ice storage; an ice storage tank 2 for ice making and ice storage; An intake unit 3 for taking in outside air, an exhaust unit 4 for exhausting air warmed by latent heat of water in the ice storage room 1, and a blowing unit 6 for blowing cool air in the ice storage room 1 from the ice storage room 1 to the cooling space 5. Cooling device A including a cooling device main body A1 having a cooling device and a ventilation unit 7 provided in a cooling space 5 communicating with the ice storage room 1.
It was that.

In the method of the first aspect and the apparatus of the second aspect,
In the winter season when the outside air temperature is equal to or less than minus, minus outside air is taken into the ice storage chamber 1 from the intake unit 3 to freeze the water in the ice storage tank 2. At this time, the outside air heated by the latent heat when the water freezes is exhausted from the exhaust unit 4. The ice in the ice storage tank 2 thus frozen is stored until summer when the outside air becomes hot and humid for cooling. In summer, when hot and humid outside air is taken into the ice storage compartment 1 from the intake section 3, the outside air is cooled by the latent heat of the ice in the ice storage tank 2 and the water in the outside air is cooled during the cooling. In the water storage chamber 1, dew is formed by dew condensation and dehumidified cold air. Further, dust, pollen and bacteria contained in the outside air are adsorbed and removed by the moisture condensed in the ice storage tank 2 during cooling, so that fresh and clean cold air can be obtained. The cool air obtained here is blown from the blower 6 to the cooling space 5 (living room), mixed with the high-temperature and high-humidity air in the cooling space 5, and cooled and dehumidified. The mixed air in the cooling space 5 is ventilated with fresh and clean cool air blown by the ventilation unit 7, and house dust, pollen, bacteria, etc. in the cooling space 5 are exhausted together with the air, so that the air is extremely clean. It will be cooled.

That is, in the first and second aspects of the present invention, the ice is natural ice produced by the outside air, and the latent heat of the natural ice is used to cool and dehumidify the hot and humid outside air. Therefore, no energy is required for ice making and cooling and dehumidification of the outside air, and energy is required in this method and apparatus because of the operation of the blowing unit 6 that blows cool air from the ice storage room 1 to the cooling space 5. It is about electric power,
Compared with the above-mentioned conventional cooling device (cooling by ice made by electric power, cooling by electric power or gas energy), extremely significant energy saving is achieved. In addition, since the water in the ice storage tank 2 alternately freezes and thaws in winter and summer, the water does not run out except for spontaneous evaporation or sudden accidents. Since maintenance-free operation is realized, it is possible to reduce energy and cost for transporting snow, which was required every season, in the cooling device using the cold air of snow. Then, the content of dust, pollen and bacteria in the cooled and dehumidified outside air is drastically reduced, so that extremely fresh and clean cold air can be obtained.
And the absolute humidity of the cooling space 5 can be reduced, so that the environment in the cooling space 5 can be made extremely clean and comfortable. It should be noted that the method and apparatus of the present application can be implemented at least in a place where the outside air in the winter records a minus temperature, and it is considered that the method and apparatus can be used in a considerably wide range in Japan, for example.

In the present invention, as described above, the absolute humidity is lowered at the same time as the temperature in the cooling space 5 is lowered. This is because, in the cooling space 5, a person cannot obtain a refreshing feeling simply by lowering the temperature. In other words, the high absolute humidity in the cooling space 5 means that the water vapor pressure acting on the human becomes high, and the water vapor pressure reduces the amount of perspiration and the rise in body temperature cannot be suppressed. It is possible that it cannot be obtained.
Therefore, the present invention uses the ventilation cooling method and the ventilation cooling device A capable of lowering the absolute humidity in the cooling space 5 as described above, thereby reducing the water vapor pressure acting on humans, increasing the amount of perspiration, and increasing the body temperature. By suppressing the rise of humans, it is possible for humans to feel refreshed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the ventilating and cooling system A, the intake unit 3 and the exhaust unit 4 are configured such that the intake unit 3 is provided below the ice storage chamber 1 and the exhaust unit 4 is provided above.
Are preferably openably and closably provided. Claim 3
The invention of the present invention utilizes the property that warm air rises, that is, in the ice storage room 1, the negative outside air is warmed by the latent heat of water and rises due to the temperature difference with the outside air that is sequentially taken in, and the temperature rises above. The air is naturally exhausted from the exhaust unit 4. Then, the rising of the warmed outside air generates an ascending airflow in the ice storage chamber 1, and the ascending airflow naturally sucks the negative outside air from the lower intake section 3. Therefore,
Since power is not required for intake and exhaust of outside air, it is extremely suitable for energy saving. Further, according to the fact that the intake unit 3 and the exhaust unit 4 can be opened and closed, when the water in the ice storage chamber 1 is frozen, both the intake unit 3 and the exhaust unit 4 are opened.
The outside air is sucked and exhausted as described above. When the ice in the ice storage chamber 1 is stored, the intake section 3 and the exhaust section 4 are both closed to prevent outside air exceeding 0 degrees from entering, thereby suppressing the melting of the ice in the ice storage chamber 1. When using air conditioning,
With only the intake unit 3 in the open state, the outside air is sucked by the operation of the blower unit 6. As described above, by opening and closing the intake unit 3 and the exhaust unit 4 according to the situation, it is expected that the ice storage performance in the ice storage chamber 1 is improved.

The opening and closing of the intake section 3 and the exhaust section 4 in claim 3 may be performed manually or automatically, but is preferably automatic. For example, when the outside air temperature is constantly sensed by the air temperature sensor and the outside air temperature is detected by the air temperature sensor, the control means outputs the same to the opening / closing means. When an outside air temperature exceeding ° C. is detected, the control means outputs to the opening / closing means, and the opening / closing means closes the intake unit 3 and the exhaust unit 4. When the blower unit 6 is operated, the opening / closing means is simultaneously operated by the intake unit 3.
The opening / closing means closes the intake unit 3 when the door is opened and stopped. With this configuration,
The intake unit 3 and the exhaust unit 4 can be quickly opened and closed, the timing at the time of ice making and the storage of ice are optimized, and the outside air is not taken in when the cooling is not performed. It has ice making performance and storage performance. This automatic opening and closing requires power,
The amount of energy consumed is small in comparison with the amount of energy consumed in the conventional cooling device described above, and is not an amount affected by realization of energy saving.

According to the fourth aspect of the present invention, the ice storage tank 2 is constructed by stacking a large number of tank bodies 21 in a multi-tiered manner with intervals between the tank bodies, thereby improving the ice making efficiency and the ease of maintenance. Is being improved. In other words, when freezing the same amount of water, it is faster to freeze the water in small portions in a large number of tanks 21 than to freeze all the water in one water tank. In addition, since a large number of the tanks 21 are provided with an interval therebetween, the entire surface of the tank 21 can be exposed to negative outside air to take away the heat of water from the entire surface.
It is possible to make ice more quickly. And many tank bodies 21
If the ice storage tank 2 is composed of any of the above, even if one of them is damaged, only the damaged tank body 21 needs to be replaced. Does not significantly affect

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a ventilation cooling device A that specifically implements the ventilation cooling method of the present invention. The ventilation cooling device A is heated in an ice storage chamber 1 for ice making and ice storage, an ice storage tank 2 for ice making and ice storage, an intake unit 3 for taking in outside air into the ice storage chamber 1, and latent heat of water in the ice storage chamber 1. The cooling device main body A1 includes an exhaust unit 4 for exhausting the cooled air and a blowing unit 6 for blowing cool air in the ice storage room 1 from the ice storage room 1 to the cooling space 5, and the cooling space 5 communicated with the water storage room 1. It is composed of a provided ventilation unit 7.

The ice storage chamber 1 is surrounded by a heat insulating material 11, has an intake section 3 below a side wall 12, and has a chimney-shaped exhaust section 4 on a ceiling 13. The intake unit 3 and the exhaust unit 4 are openable and closable as required. Further, on the side wall 14 opposite to the side wall 12 on which the air intake section 3 is provided, a blower section 6 composed of various fans typified by a sirocco fan is provided, and the blower section 6 and the cooling space 5 are provided. The inside of the ice storage room 1 and the cooling space 5 are communicated by the provided pipe 8 having a heat insulating effect. The ice storage tank 2 is configured by stacking a large number of tank bodies 21 in a multi-tiered manner with a distance between the tank bodies 21, and each of the plurality of tank bodies 21 is filled with water. Incidentally, a rack is actually used when stacking the tank bodies 21, but illustration of the rack is omitted in this embodiment.

An air outlet 81 connected to the pipe 8 is attached to the ceiling 51 of the cooling space 5.
The cooling air is supplied from 1 to the cooling space 5.
Further, a ventilation unit 7 for ventilating the air in the cooling space 5 is provided above the side wall 52 of the cooling space 5, and when fresh and clean dehumidified cool air is supplied from the blower port 81, the cooling space is provided. The high-temperature, high-humidity dirty air in the air 5 rises and is exhausted from the ventilation unit 7. Therefore, when the cool air is supplied, the air in the cooling space 5 is constantly ventilated, so that the inside of the cooling space 5 can always be kept comfortable.
Although the ventilation section 7 is illustrated as an insertion hole in the present embodiment, the invention is not limited to this, and the ventilation section 7 may be forcibly evacuated by a ventilation mechanism represented by a ventilation fan.

According to the ventilation cooling system A of the present embodiment, the intake unit 3 and the exhaust unit 4 are opened in winter when the outside air becomes minus, and the temperature difference between the minus outside air and the outside air heated by the latent heat of water is obtained. The water in the ice storage tank 2 is frozen by introducing negative outside air into the ice storage chamber 1 using the updraft, and the intake unit 3 is operated until the outside air becomes hot and humid, requiring cooling.
Then, the exhaust part 4 is closed to preserve the ice. Then, in the summer when cooling is required, when the air intake unit 3 is opened and the air blowing unit 6 is operated, hot and humid outside air is introduced into the ice storage chamber 1, and the outside air is cooled by the latent heat of ice, Moisture containing dust, pollen and bacteria is dehumidified by dew condensation on the ice storage tank 2 to become fresh, clean and dehumidified cold air, and
The air is supplied to the cooling space 5 from the air outlet 81 through the pipe 8. When the cool air is supplied, the high-temperature, high-humidity and dirty air in the cooling space 5 rises and is ventilated from the ventilation unit 7, so that
The cooling space 5 is cooled and the absolute humidity is lowered, so that the environment in the cooling space 5 becomes extremely clean and comfortable.

[0017]

As described above, the present invention does not use any energy such as electric power or gas at the time of ice making, and can use only a small amount of electric power to operate the air blower at the time of cooling. Cooling, the dehumidified cold air is used as a cooling heat source, so that the amount of direct and indirect energy required for cooling and its cost are significantly reduced,
A ventilation cooling method and a ventilation cooling device suitable for environmental conservation can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a ventilating cooling apparatus implementing a ventilating cooling method of the present invention.

[Explanation of symbols]

 1: Ice storage room 2: Ice storage tank 3: Intake section 4: Exhaust section 5: Cooling space 6: Ventilation section 7: Ventilation section A: Ventilation cooling apparatus A1: Cooling apparatus body

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Jun Dokoshi 9-17-7 Kita 5-Jo Nishi, Chuo-ku, Sapporo, Hokkaido (72) Inventor Jin 3-5-20 Oyachi Higashi, Atsubetsu-ku, Sapporo 701 Alshine Oyachi F-term (reference) 3L053 BA10

Claims (4)

[Claims] 1. An air storage chamber for ice making and ice storage, in which negative external air is sucked and exhausted to cool the external air having a temperature exceeding 0 ° C. by the latent heat of melting of the frozen ice, and cool the air obtained by dehumidifying the air. A ventilation cooling method, wherein the cooling air is blown from an ice storage room to a cooling space and the air in the cooling space is ventilated. 2. An ice storage chamber for ice making and ice storage, an ice storage tank for ice making and ice storage, an intake unit for taking in outside air into the ice storage room, and an exhaust unit for exhausting air heated by latent heat of water in the ice storage room. And a ventilation unit provided with a ventilation unit provided in a cooling space that communicates with the water storage room, and a ventilation unit that blows cool air in the ice storage room from the ice storage room to the cooling space. 3. The ventilation cooling apparatus according to claim 2, wherein an intake section is provided below the ice storage chamber, and an exhaust section is provided above the ice storage chamber so as to be opened and closed. 4. The cooling device according to claim 2, wherein the ice storage tank is formed by stacking a large number of tank bodies in a multi-stage shape with a distance between the tank bodies.