JPH0643713B2 - Dew condensation prevention method and device for ice arena - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for preventing dew condensation in an ice arena.

(Prior art) Ice arenas are generally operated only during the winter when the outside temperature is low, but recently, for the purpose of operating the equipment efficiently, many facilities are open all year long. There is.

In such facilities that operate all year round, the problem that did not appear during the winter, that is, the problem of dew condensation in the facility, is a major problem.

That is, in the winter period, ventilation is usually performed to make the indoor and outdoor areas of the ice arena equivalent to each other. Therefore, the dew condensation on the wall surface is not a problem, but in summer, the outside temperature is high. As the temperature difference between the inside and outside becomes significant, a large amount of dew condensation will occur on the ceiling of the ice arena, the back of the hut, and the wall surface. This is because the radiant heat of ice removes heat from the ceiling surface, wall surfaces, and the like, resulting in extremely low temperatures on these surfaces.

In addition, since the outside air is humid and humid during the summer period, when the person goes in and out, the outside air flows into the ice arena room, so that dew condensation is more likely to occur. Since the ice arena is a large-scale facility, the amount of dew condensation water is much larger than that of a general building, and the treatment of such dew condensation water becomes a big problem.

(Problems to be solved by the invention) In order to prevent dew condensation in a building, a method using dehumidifying ventilation is usually used. However, this dehumidification / ventilation method is also not very effective when the indoor temperature is low, such as in an ice arena, because the amount of water that can be stored in the indoor air is small.

In the ice arena, when the condensed water falls from the ceiling surface or the like, the ice surface is dimpled or raised by falling from a considerably high position, which makes the ice surface uneven. Since a large amount of condensed water adheres to the ceiling surface, etc., the condensed water always falls. Therefore, even if a machine or the like that melts the ice surface to form a smooth surface cannot be used to finish the ice surface cleanly, a high-quality ice surface cannot be formed, and it is difficult to slip. There is a problem.

In addition, since the dew condensation is extremely significant at the ice arena,
There is also a situation in which dew condensation occurs inside various equipment such as attached lighting equipment, and there is a problem that these equipment do not function.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to effectively prevent a dew condensation disorder of an ice arena where the indoor temperature is considerably lower than the outside temperature. The present invention aims to provide a dew condensation prevention method and a device thereof.

(Means for Solving the Problems) The present invention has the following configuration in order to achieve the above object.

That is, the floor surface of the indoor space is formed as an ice surface portion by an ice making device such as a refrigerator, and the wall surface portion and the ceiling portion of the indoor space are formed by using exhaust heat of the refrigerator or a heating device. It is characterized in that the warmed air is sent along the inner wall surfaces of the wall surface portion and the ceiling portion to supply heat to prevent dew condensation on the wall surface portion and the ceiling portion.

Further, an ice making mechanism such as a refrigerator for forming the floor surface of the indoor space as an ice surface portion, and warming indoor air or outside air,
A heating mechanism having a heater such as a refrigerator utilizing a waste heat of a refrigerator or a boiler, a duct, a blower and a blower, and heating air heated by the heating mechanism is applied to at least the inner wall surface of the ceiling. It is characterized in that it is provided with a blower mechanism that blows along it, and a sensor for monitoring the temperature and humidity in the ice arena, and a control mechanism that controls the heating mechanism and the blower mechanism based on the measured value of the sensor.

(Function) The indoor floor surface of the ice arena is formed as an ice surface portion by an ice making mechanism such as a refrigerator. At the same time, the air warmed by the heating mechanism is sent to the wall surface portion and the ceiling portion by the air blowing mechanism, so that the wall surface portion and the ceiling portion are heated. The temperature and humidity inside the ice arena are monitored by the control mechanism, and the blower mechanism and the like are controlled to eliminate the dew condensation trouble on the ceiling and the like. The ice surface is not affected by heating air and forms a good quality ice surface.

(Examples) Hereinafter, preferred examples of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, 10 is a building of an ice arena, 12 is a ceiling part, 14 is a wall surface part, and 16 is an ice surface part. Wall surface 1
Blow-out parts 18 and 20 are arranged at the lower part and the upper part of 4, respectively. These blowing parts 18 and 20 extend horizontally along the wall surface.

A blowout portion 18 provided at the lower portion of the wall surface portion 14 is provided with a blowout port for blowing air toward the upper side of the wall surface.
The blow-out portion 20 provided at the upper part of the above is provided with a blow-out port that blows out air above the ceiling portion along the inner surface of the ceiling portion 12. Reference numeral 22 is a collection unit arranged at the top of the ceiling 12. Reference numeral 24 is a sensor arranged on the ceiling 12 to monitor the temperature and humidity inside the ice arena 10.

A management mechanism for controlling and driving each of these parts is attached to the ice arena. Next, these management mechanisms will be described.

Reference numeral 30 denotes a refrigerator used for ice making, which is connected to a pipe or the like embedded in the ice surface portion 16.

Reference numeral 32 denotes a blower unit, the air outflow side of which is connected to the blowing units 18 and 20 through a duct 34.

At the air inflow side of the blower unit 32, the outside air and the recovery unit 22 are
The air recovered by is introduced. Reference numeral 36 is a filter installed at the outside air inlet, and 38 is a fan for introducing outside air. The outside air flows into the blower unit 32 through the dehumidifier 40 and the heater 42.

The heater 42 is a mechanism for collecting exhaust heat or high temperature outside air heat by using a heat pump or the like to heat the outside air, and the exhaust heat generated in each part managing the ice arena can be used as a heat source. For example, the exhaust heat generated from the electric room 44 accommodating the power source or the like or the exhaust heat generated in the refrigerator 30 described above can be used.

Reference numeral 46 denotes a dehumidifier for dehumidifying the air collected by the collection unit 22.

Reference numeral 48 is a boiler attached to the blower unit 32.
It is controlled to turn on and off by a sensor and a control mechanism that monitors the temperature of the air flowing into 2, and heats the blown air.

Next, the operation of the above-described embodiment will be described. After the outside air is dehumidified, it is heated in the heater 42 and the recovery unit 22
The air flows into the blower unit 32 together with the indoor air collected in step S6. If the temperature of the incoming air is lower than a certain temperature, the boiler 48
The blast air is warmed by the blower unit 32 to the blower units 18, 2
Send heating air to 0. Heating air is blown upward from the blowing portion 18 along the wall surface portion 14, and heating air is blown from the blowing portion 20 along the inner surface of the ceiling portion 12. The heating air blown into the ice arena 10 is recovered by the recovery unit 22, and again flows into the blower unit 32 and is circulated and used, as described above.

In this way, the heating air flows constantly on the inner wall surfaces of the ceiling portion 12 and the wall surface portion 14 of the ice arena 10, and by supplying heat to the ceiling portion 12 and the wall surface portion 14, the ceiling portion 1
2 and the wall surface portion 14 can be prevented from dew condensation.

In the ice surface portion 16, ice making work is performed by the refrigerator 30.

Therefore, in the ice arena 10 of the embodiment, cooling is performed on the floor surface, heating is performed on the wall surface and ceiling surface, and cooling and heating are performed simultaneously in one indoor space.

As mentioned above, the ice arena was originally constructed mainly for use in the winter, and in that case the indoor and outdoor temperatures are used in common, so there is a facility to actively heat the room. It is usually not done, and the above heating method has not been done due to the fact that heating in the summer is not suitable for the senses, and because heating may impair the quality of ice.

However, according to actual tests, it has been found that under certain conditions, dew condensation can be effectively eliminated without any loss of ice quality.

FIG. 2 shows the results of measuring the temperature and humidity near the ceiling of the ice arena at a plurality of measurement points. In the graph, the horizontal axis represents temperature and the vertical axis represents humidity.

FIG. 3 shows the measurement points of the ice arena measured in the experiment.

The data shown in Fig. 2 are the measurement points 2, 4, 6, 1 in Fig. 3.
It shows the average value of the temperature measurement results of 0, 14, 19, and 29 and the measurement result of the humidity at the measurement point 30, and the values are plotted every hour.

In FIG. 2, an area A is an area where the ceiling portion is in a non-condensing state, and an area B is an area where it is in a dew condensation state. That is, for example, when the temperature near the ceiling is around 8 ° C, dew condensation can be prevented by maintaining the humidity at around 85% or less, and
It shows that dew condensation can be prevented by keeping the humidity at about 90% or less at about 12 ° C.

From this result, it is possible to prevent the dew condensation on the ceiling surface by controlling the heat supply mechanism so as to maintain the temperature / humidity condition within the area A in FIG. 2 while monitoring the temperature / humidity in the vicinity of the ceiling portion with a sensor or the like. You can

When observing changes in the ice surface of the ice arena with the above-mentioned dew condensation disappeared, the dew condensation water did not fall onto the ice surface, so the surface of the ice surface did not become uneven, and it was much better than before. It became a great ice quality. In this case, it is considered that the adverse effect of dew condensation water could be prevented, and at the same time, heating the inside of the ice arena melted the ice surface to some extent, and at the same time, the effect of making ice made the ice surface smooth.

Thus, the test results confirmed that heating the ice arena has the effect of eliminating the dew condensation water and the effect of improving the ice quality.

Therefore, it is possible to obtain a suitable indoor environment and ice quality by controlling the temperature and humidity of the ice arena at least under the conditions shown in FIG. Thus, it is possible to prevent the ice surface from becoming uneven due to dew condensation water, and it is possible to maintain a smooth surface and a good-quality ice surface portion, and to maintain a slippery condition.

Since the temperature and humidity inside the ice arena vary slightly depending on the facility, it is considered that the temperature and humidity conditions that will not cause dew condensation will vary slightly depending on the facility, but by supplying and managing heat to maintain conditions that do not cause dew condensation, Similarly, it is possible to obtain a suitable ice surface.

Also, by heating the room by heat supply, the temperature difference inside and outside will be reduced, the indoor environment will be comfortable, the athlete will be able to enjoy activities, and the audience will be able to see the competition comfortably. . In addition, by preventing dew condensation, it is possible to prevent damage to various machinery such as lighting equipment, and to prevent damage to the building itself by preventing condensation water and mold from forming. There is.

Although the ceiling is described in the above example, the same applies to the back of a hut, the back of the ceiling, and the like, and the same effect can be obtained for the wall surface and the like.

In the above-mentioned embodiment, the ice arena is taken up and explained, but the above-mentioned dew condensation prevention method is used for other facilities, such as an indoor ski resort, where a part of the room must be cooled below the ice temperature. It can be suitably used also in.

Although the present invention has been variously described above with reference to the preferred embodiments, the present invention is not limited to these embodiments.
Of course, many modifications can be made without departing from the spirit of the invention.

(Effects of the Invention) According to the present invention, by the configuration as described above,
It is possible to eliminate the dew condensation trouble on the wall surface and the ceiling in the ice arena without adversely affecting the ice surface. As a result, it is possible to prevent dew condensation water from falling onto the ice surface from the ceiling or the like, and to prevent the ice surface from becoming uneven, thereby improving the ice quality and making it slippery. In addition, the indoor environment of the ice arena is improved, and the building itself is not damaged, which is very effective.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment using the dew condensation prevention method according to the present invention, FIG. 2 is a graph showing the measurement results of temperature and humidity near the ceiling of an ice arena, and FIG. 3 is an experimental object. It is explanatory drawing which shows the measurement point of an ice arena. 10 ... Ice arena, 12 ... Ceiling part, 14 ... Wall part, 16 ... Ice surface part, 18, 20 ... Blowing part, 2
2 ... Recovery unit, 24 ... Sensor, 30 ... Refrigerator, 32
...... Blower, 34 ...... duct, 36 ...... filter, 38
...... Fan, 40, 46 …… Dehumidifier, 42 …… Heating machine,
44 ... electric room, 48 ... boiler.

Claims (2)

[Claims] 1. A floor surface of an indoor space is formed as an ice surface portion by an ice making device such as a refrigerator, and exhaust heat of a refrigerator or the like is used for a wall surface portion and a ceiling portion of the indoor space. Air warmed using
A method for preventing dew condensation on an ice arena, which prevents dew condensation on the wall surface portion and the ceiling portion by sending heat along the inner wall surface of the wall portion and the ceiling portion to supply heat. 2. An ice making mechanism such as a refrigerator for forming a floor surface of an indoor space as an ice surface portion, and a heater such as a boiler or a boiler for warming indoor air or outside air and utilizing exhaust heat of the refrigerator or the like. A heating mechanism having a heater, a duct, a blower, and a blower, and a blowing mechanism that blows out the heating air heated by the heating mechanism along at least the inner wall surface of the ceiling, and monitors the temperature and humidity inside the ice arena. And a control mechanism for controlling the heating mechanism and the blower mechanism based on the measured value of the sensor for preventing dew condensation on the ice arena.