JPH08313013A - Air conditioner - Google Patents

Abstract

PURPOSE: To restrict a running cost of an air conditioner in a building where an internal generated heat and a surrounding air load are excessively reduced and a less amount of variation in temperature and humidity occurs by a method wherein there is provided a dehumidifying means operated in response to an absolute humidity within a easing storing an air heater, an air cooler, a blower and an air filter. CONSTITUTION: Within a casing 1 having both a surrounding air duct 3 and a returning air duct 5 connected at its upstream side and an air feeding duct 7 connected at its downstream side are installed a filter 9 for collecting powder dust in air feed through time surrounding air duel 3 or the returning air duct 5 as well as a dehumidifier 11 or a cooling coil 13, a heating coil 15 and a blower 17 and the like. Although time dehumidifer 11 installed within time casing 1 is constituted by an evaporator or an expansion valve, a condensor and a compressor, this dehumidifier 11 is provided with a humidity sensor 27 for use in sensing an absolute humidity in the air passing in the casing 1. When time absolute humidity in a storing device exceeds a set value, the humidity sensor 27 detects this state so as to operate the dehumidifier 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an air conditioner used in a building such as a museum storehouse where internal heat generation and external air load are extremely small and temperature and humidity fluctuations are small.

[0002]

2. Description of the Related Art Conventionally, as a dehumidification measure for an art museum storage, the heat source equipment (boiler and refrigerator) of an air conditioner and an air conditioner are operated throughout the year to control the humidity, or to be sold in the store. The reality is that multiple small dehumidifiers are installed.

[0003]

However, in the conventional dehumidification countermeasure using the air conditioning equipment as described above,
The running cost is high because the heat source equipment and the air conditioner are operated throughout the year.Although the boiler and the refrigerator are operated at the same time to keep the room temperature constant, the room temperature actually fluctuates. It has also been pointed out that there is a drawback in that the stored items are unfavorable for storage.

Further, the stored items such as paintings, calligraphy and clothes should be managed by absolute humidity. However, relative humidity is used as the design condition for today's air conditioning equipment,
The regulation value of relative humidity in air conditioning is 40% RH or more,
Although it is set to 70% RH or less, the conventional dehumidification measures for managing these stored items from the same viewpoint as air conditioning for human beings by using such an air conditioning equipment were not preferable.

On the other hand, in the conventional dehumidification measures using a commercially available small dehumidifier, the curator regularly discards the water stored in the drain pan of the dehumidifier, but this work is troublesome. Moreover, in terms of the storage of the stored items, it is the actual situation that it is desired to suppress the temperature and humidity fluctuations by minimizing the number of people entering and leaving the storage unit. The present invention has been devised in view of the above circumstances, and is an air conditioner used for air conditioning of a building such as a museum storehouse where internal heat generation and external air load are extremely small and temperature and humidity fluctuations are small, and are described above. Compared to conventional dehumidification measures, running costs are reduced,
It is an object of the present invention to provide an air conditioner capable of producing an environment suitable for storing stored items.

[0006]

In order to achieve such an object, the invention according to claim 1 provides an air heater, an air cooler,
An air conditioner in which a blower and an air filter are housed in a casing is characterized in that a dehumidifying unit that operates according to absolute humidity is provided in the casing. And claim 2
The invention according to claim 1 is the air conditioner according to claim 1, wherein the drain pipe of the dehumidifying means is connected to the drain pipe of the air cooler.

[0007]

According to the first aspect of the invention, the dehumidifying means is activated when the absolute humidity of the storage or the like exceeds a predetermined value. When dehumidifying the storage, etc., if only the blower and the dehumidifying means are operated without operating the heat source device in the middle season when temperature control is not required, the dehumidifying means dehumidifies the storage, etc. Since it is a regulation, the room temperature does not fluctuate and it is preferable for storage of stored items etc. Also, since the dehumidifying means dehumidifies based on absolute humidity, an environment suitable for storing stored items etc. appears. Will be done.

According to the second aspect of the invention, the water dehumidified by the dehumidifying means is drained through the drain pipe of the cooling coil.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of an air conditioner according to claims 1 and 2, wherein 1 is an outside air duct 3 and a return air duct 5 on the upstream side, and an air supply duct 7 is on the downstream side. With the casings connected to each other, in the casing 1, there are provided a dehumidifier 11, a cooling coil 13, a heating device, including a filter 9 for collecting dust in the air introduced through the outside air duct 3 and the return air duct 5. The coil 15, the blower 17, etc. are installed.

As in the conventional air conditioner, a cooling water pipe 19 and a return water pipe 21 are connected to the cooling coil 13, and
A steam pipe 23 and a return water pipe 25 are connected to the heating coil 15, respectively, so that cold water cooled by an evaporator of a refrigerator (not shown) is introduced into the cooling coil 13 via a cold water pipe 19. There is. Then, the cold water introduced into the cooling coil 13 is returned to the refrigerator via the return water pipe 21 after heat exchange is performed with the air passing through the inside of the casing 1.
After being cooled by the refrigerator, it is introduced again into the cooling coil 13.

Further, the steam generated by a steam boiler (not shown) is introduced into the heating coil 15 from the steam pipe 23 as a heat medium, and the steam introduced into the heating coil 15 is inside the casing 1. After the heat exchange is performed with the air passing through and the water is changed to warm water, it returns to the steam boiler via the return water pipe 25, and becomes steam in the steam boiler and is introduced into the heating coil 15 again. Has become.

On the other hand, the dehumidifier 11 installed in the casing 1 is composed of an evaporator, an expansion valve, a condenser and a compressor, like the small dehumidifiers commercially available today.
Further, the dehumidifier 11 is equipped with a humidity sensor 27 for detecting the absolute humidity in the air passing through the casing 1, and when the absolute humidity in the storage exceeds a set value, the humidity sensor 27 detects this. Then, the dehumidifier 11 is operated.

Since the dehumidifying function of the dehumidifier 11 is proportional to the volume of the room, a dimension (filter 9 and cooling coil 1 is shown in the figure.
3) and the b dimension (size of the dehumidifier 11) are appropriately determined according to the indoor volume of the storage. And the dehumidifier 1
A drain pipe 29 is connected to 1 and the water dehumidified by the dehumidifier 11 is discharged to the outside through the drain pipe 29.
The drain pipe 29 is connected to the drain pipe 31 of the cooling coil 13.

The air conditioner 33 according to this embodiment has such a structure, and the air conditioner 33 is installed in the machine room of the museum. In the air conditioning equipment including such an air conditioner 33, the blower 17 can be operated throughout the year, and the dehumidifier 11, the refrigerator, and the heat source device of the steam boiler can be operated, but the temperature control is unnecessary. When the absolute humidity in the storage exceeds the set value in the middle season, only the blower 17 and the dehumidifier 11 are operated.
When the indoor conditions of the storage are constantly monitored and temperature control is required during continuous operation in the middle season, in summer,
The heat source equipment is becoming more operational in winter.

In addition, in FIG. 1, 35 is each duct 3, 5,
7 is a damper mounted in the flow path 7. The air conditioner 33 according to the present embodiment is configured in this way, and as described above, in the air conditioner equipped with the air conditioner 33, the refrigerator and the steam boiler operate during the middle season when temperature control is unnecessary. Without the blower 17, the absolute humidity in the storage exceeds the set value, and when the humidity sensor 27 detects it, the dehumidifier 11 operates together with the blower 17 to dehumidify the air in the storage. , The water dehumidified by the dehumidifier 11 is a drain pipe 29,
It will be drained to the outside via 31.

The indoor conditions of the storage are monitored, and if temperature control is required during continuous operation in the middle season, or in summer or winter, the refrigerator and the steam boiler are further operated to store. The temperature and humidity of the warehouse are controlled at the same time,
The water dehumidified by the dehumidifier 11 is discharged to the outside through the drain pipe 31 together with the dew condensation water of the cooling coil 13.

As described above, according to the present embodiment, in dehumidifying the storage, the heat source device does not operate in the middle season when temperature control is unnecessary, and the blower 17 and the dehumidifier 11 operate to operate inside the storage. Since it is dehumidified, it is not necessary to operate the heat source equipment throughout the year, and as a result, the running cost is lower than before, and since only humidity is adjusted, the room temperature of the storage will change. This is preferable for storage of the stored items.

Further, since the dehumidifier 11 operates when the absolute humidity of the storage exceeds a predetermined value, an environment suitable for storing the stored goods is provided as compared with the conventional dehumidification measures by the air conditioning equipment based on the relative humidity. Can be revealed. Furthermore, in the present embodiment, the dehumidifier 1 uses the drain pipe 31 of the cooling coil 13.
Since the water dehumidified in 1 is drained to the outside, there is no need for the curator to periodically throw away the water stored in the drain pan of the dehumidifier, and to enter and exit the storage room. It is possible to suppress temperature and humidity fluctuations, which is preferable for storage of stored items.

In addition, according to this embodiment, the cooling coil 1
Since the existing equipment such as the drain pipe 31 of No. 3 is used, the installation cost can be suppressed, and it is not necessary to purchase small commercial dehumidifiers. Therefore, the dehumidification cost can be reduced. In the above embodiment, one dehumidifier 11 including an evaporator, an expansion valve, a condenser, and a compressor is installed in the casing 1 as the dehumidifying means.
Instead of the dehumidifier 11, the casing 1 between the filter 9 and the cooling coil 13 as in the other embodiment shown in FIG.
Inside the evaporator 37, the expansion valve 39, the condenser 41, the compressor 43
Are individually arranged, and a refrigerant is circulated therebetween to dehumidify the air in the storage, a humidity sensor 27 is separately mounted in the casing 1, and water dehumidified by the evaporator 37 is cooled. You may drain to the exterior from the drain pipe 29 connected to the drain pipe 31 of the coil 13.

Thus, the air conditioner 45 according to this embodiment can also achieve the intended purpose as in the above embodiment. In each of the above-described embodiments, the steam boiler is used as the heat source device, but it is needless to say that the invention can be applied to the one using the hot water boiler. Further, the air conditioner according to each of the present embodiments can be used not only in the museum storage but also in a building where internal heat generation and external air load are extremely small and temperature and humidity fluctuations are small.

[0022]

As described above, according to the air conditioner according to each claim, when dehumidifying a storage room or the like, the heat source device is not operated in the middle season when temperature control is unnecessary, and the air conditioner is not used. Since it is possible to dehumidify the storage by operating only the dehumidifying means, it is not necessary to operate the heat source equipment throughout the year, and as a result, the running cost is lower than before and only the humidity is adjusted. Since the room temperature does not fluctuate, it is preferable for storage of the stored products.

Further, since the dehumidifying means operates when the absolute humidity of the storage exceeds a predetermined value, an environment suitable for storing the stored goods is developed as compared with the conventional dehumidification measures by the air conditioning equipment based on the relative humidity. Can be issued. Further, according to the invention of claim 2, the water dehumidified by the dehumidifying means can be drained by using the drain pipe of the cooling coil, so that the curator regularly collects the water stored in the drain pan of the dehumidifying means. This eliminates the need for troublesome work such as throwing away the material, makes it unnecessary to enter and leave the storage space, and suppresses temperature and humidity fluctuations, which is preferable for storage of stored products.

In addition, since the existing equipment such as the drain pipe of the cooling coil is used, the installation cost can be suppressed, and it is not necessary to purchase a small commercial dehumidifier, so that the dehumidification cost can be reduced. Also has.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of an air conditioner according to claim 1 and claim 2.

FIG. 2 is a schematic configuration diagram of another embodiment of the air conditioner according to claim 1 and claim 2.

[Explanation of symbols]

 1 Casing 3 Outside air duct 5 Return air duct 7 Air supply duct 9 Filter 11 Dehumidifier 13 Cooling coil 15 Heating coil 17 Blower 27 Humidity sensor 29, 31 Drain pipe 33, 45 Air conditioner 37 Evaporator 39 Expansion valve 41 Condenser 43 Compressor

Claims (2)

[Claims] 1. An air conditioner in which an air heater, an air cooler, an air blower, and an air filter are housed in a casing, wherein the casing is provided with dehumidifying means that operates according to absolute humidity. An air conditioner. 2. The air conditioner according to claim 1, wherein the drain pipe of the dehumidifying means is connected to the drain pipe of the air cooler.