JP5468427B2 - Air conditioning control system and air conditioning control method - Google Patents

Description

  The present invention relates to an air-conditioning control system and an air-conditioning control method for supplying air adjusted using a vaporizing humidifier into a room to be air-conditioned by an air supply fan.

  Conventionally, in the winter season when the air is dry, the air to be controlled is humidified by a vaporizing humidifier installed in the air conditioning control system and provided indoors.

  As a technique for humidifying the air to be controlled, for example, there is a vaporizing humidifier described in Patent Document 1. In this vaporizing humidifier, humidification is performed to perform air conditioning in the winter, and drain water flowing through the drain hose is vaporized and discharged outdoors in the summer.

  By using this vaporizing humidifier in an air conditioning control system, it is possible to perform a humidification process in winter and to perform appropriate air conditioning in summer without installing a drain hose.

Japanese Patent Laid-Open No. 5-79653

  However, in the conventional air conditioning system as described in Patent Document 1, a large amount of energy is required to vaporize the water supplied from the outside in the vaporizing humidifier, and a technique for reducing this is desired. It was.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioning control system and an air conditioning control method capable of efficiently using thermal energy and reducing energy consumption.

In order to achieve the above object, an air conditioning control system of the present invention ventilates a humidifier that performs humidification processing on air to be controlled and air that has been humidified by the vaporizing humidifier into a room that is subject to air conditioning control. It is warmed by connecting between the blower fan, the cooling unit that cools the drive unit of the blower fan with cooling water, the vaporizing humidifier and the cooling unit, and performing the cooling process with the cooling unit. Installed on the return air duct for taking in the return air from the room subject to air-conditioning control as the air to be controlled, and the first water pipe for sending water to be used for the humidification treatment in the vaporizing humidifier , The cooling water that has not been vaporized by the humidification process in the vaporizing humidifier is taken in, and the remaining cooling water that has not been vaporized by the humidification process is obtained using the return air that is taken in from the return air duct. A heat exchanger that performs a heat exchange process for absorbing water, and the vaporizer humidifier and the heat exchanger are connected, and the cooling water that has not been vaporized by the humidification process in the vaporizer humidifier And a second water supply pipe that circulates the water so that the cooling water heat-exchanged by the heat exchanger is supplied again to be used for the cooling process by the cooling unit. .

The vaporizing humidifier of the air conditioning control system performs humidification processing on the air to be controlled, and the blower fan of the air conditioning control system blows the air humidified by the vaporizing humidifier into the air conditioning control target room, A cooling unit of the air conditioning control system performs a process of cooling the driving unit of the blower fan with cooling water, and is cooled by the cooling unit by the first water pipe connected between the vaporizing humidifier and the blower fan. On the return air duct, the cooling water warmed by executing the process is sent to be used for the humidification process in the vaporization type humidifier, and the return air from the air conditioning control target room is taken in as the control target air The installed heat exchanger takes in the cooling water that has not been vaporized by the humidification process in the vaporizing humidifier, and uses the return air taken in from the return air duct, Heat exchange treatment is performed to absorb the remaining heat of the cooling water that has not been vaporized, and the second water pipe connected between the vaporizer humidifier and the heat exchanger is humidified in the vaporizer humidifier. Cooling water that has not been vaporized in the treatment is sent to the heat exchanger, and the cooling water that has been heat exchanged in the heat exchanger is circulated so that the cooling water is sent again for use in the cooling treatment in the cooling unit. It is characterized by.

  According to the air conditioning control system and the air conditioning control method of the present invention, it is possible to efficiently use thermal energy and reduce energy consumption.

1 is an overall view showing a configuration of an air conditioning control system according to an embodiment of the present invention. It is a sequence diagram which shows operation | movement of the winter mode of the air-conditioning control system by one Embodiment of this invention. It is a sequence diagram which shows operation | movement of the summer mode of the air-conditioning control system by one Embodiment of this invention.

<Configuration of air conditioning control system according to one embodiment>
A configuration of an air conditioning control system 1 according to an embodiment of the present invention will be described with reference to FIG.

  The air conditioning control system 1 according to the present embodiment includes a humidity sensor 10 installed in a room X subject to air conditioning control, a return air duct 20 that takes in return air from the room X that is subject to air conditioning control, and an outside air duct that takes in outside air from the outside. 30, an air conditioner 40 that air-conditions the return air taken in from the return air duct 20 and the outside air taken in from the outside air duct 30, a water supply pipe 50 that supplies cold / hot water used for air conditioning of the air conditioner 40, A drain pipe 60 that drains cold / hot water used for air conditioning, an air supply duct 70 that supplies air conditioned by the air conditioner 40 as supply air to the air-conditioning control target room X, and a return air duct 20. In addition, the first heat exchanger 80, the second water supply pipe 90 for supplying the cooling water circulating between the air conditioner 40 and the first heat exchanger 80, and the air not used for the air conditioning in the return air are discharged to the outside. Exhaust duct 10 When, a second heat exchanger 110 installed in the exhaust duct 100 on, and a third water supply pipe 120 for water cooling water circulating between the air conditioner 40 and the second heat exchanger 110.

  The air conditioner 40 adjusts the temperature-adjusted air based on the indoor humidity measurement value measured by the coil 41 and the humidity sensor 10 that adjust the return air and outside air taken in to the target temperature using cold / hot water. Cools the frictional heat of the vaporizing humidifier 42 that humidifies by vaporizing water, the blower fan 43 that blows air from the supply duct 70 into the room X using the adjusted air as the supply air, and the fan bearing that is the drive unit of the blower fan 43 The cooling unit 44 that performs the cooling process with water is connected between the vaporizing humidifier 42 and the cooling unit 44, and the cooling water heated by the cooling unit 44 is cooled to be used for the humidifying process in the vaporizing humidifier 42. And a first water supply pipe 45 for supplying water.

  The first water pipe 45, the second water pipe 90, and the third water pipe 120 can be laid with a polytube or the like.

  The air conditioner 40 operates in a winter mode suitable for control when the outside air humidity is low, and operates in a summer mode suitable for control when the outside air humidity is high, and operates in the winter mode. The vaporizing humidifier 42 is operated when the operation is performed, and the vaporizing humidifier 42 is stopped when operating in the summer mode.

  The first heat exchanger 80 is a plug-in type heat exchanger. When the vaporizing humidifier 42 is in operation, the first heat exchanger 80 takes in water that has not been vaporized by the humidifying process in the vaporizing humidifier 42 and again cools the cooling unit 44. In order to use it for the cooling process, the heat exchange process is performed using the return air to absorb and cool the residual heat.

  The 2nd water supply pipe 90 connects between the vaporization type humidifier 42 of the air conditioner 40, and the 1st heat exchanger 80, and the 1st heat exchange is carried out for the cooling water which was not vaporized by the humidification process in the vaporization type humidifier 42. The water is supplied to the vessel 80 and is circulated so that the cooling water subjected to the heat exchange process is again supplied to the cooling unit 44 for use in the cooling process.

  The second heat exchanger 110 is a plug-in type heat exchanger, and takes in the cooling water heated by the cooling unit 44 when the vaporizing humidifier 42 is not in operation, and uses it again for cooling the fan bear rig. Then, the exhaust is cooled by heat exchange treatment.

  The third water supply pipe 120 connects between the vaporizing humidifier 42 of the air conditioner 40 and the second heat exchanger 110, and supplies the cooling water warmed by the cooling unit 44 to the second heat exchanger 110. Then, the cooling water subjected to the heat exchange process is circulated so that the cooling unit 44 sends the water again for use in the cooling process.

<Operation of Air Conditioning Control System According to One Embodiment>
Next, the case where the air conditioning control system 1 according to the present embodiment operates in the winter mode and the case where it operates in the summer mode will be described. The winter mode and the summer mode are switched by controlling a control valve in the vaporizing humidifier 42 by a mode switching signal transmitted from a central monitoring device (not shown) or the like.

[When air conditioner 40 operates in winter mode]
As an example of the case where the air conditioner 40 operates in the winter mode, it is assumed here that the temperature set value of the room X subject to air conditioning control is set in the range of 22 to 28 ° C.

  When the air conditioning control system 1 is operated in the winter mode, indoor humidity measurement values measured by the humidity sensor 10 installed in the room X subject to air conditioning control are acquired by the vaporizing humidifier 42 of the air conditioner 40 at predetermined time intervals. Is done.

  Next, a predetermined amount of return air in the room X is taken into the air conditioner 40. At this time, the return air in the room X passes through the return air duct 20 and is cooled to about 15 ° C., for example.

  Further, a predetermined amount of outside air of about 10 ° C., for example, is taken into the air conditioner 40 from the outside air duct 30 as needed from the outside (S1).

  In the air conditioner 40, the return air and outside air taken in are adjusted to the target temperature by using the cold / hot water supplied from the water supply pipe 50 in the coil 41 (S2). The cold / hot water used in the coil 41 is drained from the drain pipe 60.

  In the winter mode, the vaporizing humidifier 42 is operated, and the air whose temperature is adjusted by the coil 41 is humidified based on the indoor humidity measurement value measured by the humidity sensor 10 in the vaporizing humidifier 42. (S3). Immediately after activation of the air conditioning control system 1, water used for humidification in the vaporizing humidifier 42 is supplied from the outside through the water supply pipe 50.

  The air humidified by the vaporizing humidifier 42 is supplied as supply air to the room X subject to air conditioning control by the blower fan 43 (S4).

  At this time, in the blower fan 43, frictional heat is generated in the fan bearing due to operation, and this frictional heat is cooled by the cooling unit 44 with cooling water (S5). Immediately after activation of the air conditioning control system 1, water used for cooling in the cooling unit 44 is supplied from the outside through the water supply pipe 50, the vaporizing humidifier 42, and the first water supply pipe 45.

  The cooling water used for cooling the fan bearing in the cooling unit 44 rises in water temperature to, for example, about 30 ° C. by heat exchange by this cooling process. The cooling water whose water temperature has risen is sent to the vaporizing humidifier 42 through the first water supply pipe 45 and used for the humidification process (S6).

  By using the cooling water whose temperature has increased in this way for the humidification process, the load on the vaporizing humidifier 42 is reduced.

  Next, the cooling water that has not been vaporized by the humidification process in the vaporizing humidifier 42 is sent to the first heat exchanger 80 through the second water supply pipe 90 (S7), and the return air is returned in the first heat exchanger 80. Is used to perform heat exchange processing, and the remaining heat of the cooling water is absorbed and cooled (S8).

  The cooled cooling water is returned to the cooling unit 44 through the second water pipe 90, the vaporizing humidifier 42, and the first water pipe (S9), and is used again for cooling the fan bearing (S10). .

  In the first heat exchanger 80, the return air used for cooling the cooling water rises in temperature due to heat exchange, and rises above 15 ° C., which is the temperature in the return air duct 20 in the above-described example. The load on the coil 41 is reduced.

[When the air conditioner 40 operates in the summer mode]
As an example of the case where the air conditioner 40 operates in the summer mode, it is assumed here that the temperature setting value of the room X subject to air conditioning control is set in the range of 22 to 28 ° C.

  When the air conditioning control system 1 is operated in the summer mode, the return air in the room X passes through the return air duct 20 and a predetermined amount is taken into the air conditioner 40. Further, a predetermined amount of outside air of about 30 ° C., for example, is taken into the air conditioner 40 from the outside air duct 30 as needed from the outdoors (S11).

  In the air conditioner 40, the return air and the outside air taken in are adjusted to the target temperature by using the cold / hot water supplied from the water supply pipe 50 in the coil 41 (S12). The cold / hot water used in the coil 41 is drained from the drain pipe 60.

  In the summer mode, the vaporizing humidifier 42 is stopped, and the air whose temperature has been adjusted by the coil 41 is supplied as air supply to the air-conditioning control target room X by the blower fan 43 without being humidified (S13). ).

  At this time, in the blower fan 43, the frictional heat generated by the operation is cooled by the cooling water supplied from the outside through the water supply pipe 50, the vaporizing humidifier 42, and the first water supply pipe 45 (S14).

  The cooling water used for cooling the fan bearing in the cooling unit 44 rises in water temperature to, for example, about 30 ° C. by heat exchange by this cooling process. The cooling water whose water temperature has risen is sent to the second heat exchanger 110 through the vaporizing humidifier 42 and the third water supply pipe 120 that have been stopped (S15), and is, for example, 25 ° C. in the second heat exchanger 110. About the amount of exhaust gas is used to perform heat exchange processing, and this cooling water is cooled (S16).

  The cooled cooling water is returned to the cooling unit 44 through the third water pipe 120, the vaporizing humidifier 42, and the first water pipe (S17), and is used again for cooling the fan bearing (S18). .

  According to the present embodiment described above, when the humidification process is required, the heat energy is effectively obtained by using the cooling water whose temperature is increased by cooling the fan bearing of the blower fan for the humidification process in the vaporizing humidifier. It is possible to reduce wasteful energy consumption. In addition, at this time, the cooling water that has not been vaporized in the humidification process is subjected to heat exchange treatment with the return air, so that the cooling water can be circulated again for cooling the fan bearing, and the temperature of the return air The coil load can be reduced by raising the value, and wasteful energy consumption can be reduced.

  Even when no humidification is required, the cooling water whose temperature has risen due to the cooling of the fan bearing of the blower fan is heat-exchanged by exhaust, and the cooling water is used again for cooling the fan bearing. The heat energy can be used effectively.

  Moreover, according to this embodiment, since the water cooling type cooling unit is provided in the fan bearing of the blower fan, the life of the fan bearing can be extended.

  Further, in this embodiment, the case where the cooling fan for cooling the fan bearing is provided in the blower fan has been described. However, when the inverter is mounted on the blower fan, a small heat exchanger is further installed and this small heat exchange is performed. You may make it utilize the thermal energy which generate | occur | produces with an oven for operation | movement of a vaporization type humidifier.

DESCRIPTION OF SYMBOLS 1 ... Air conditioning control system 10 ... Humidity sensor 20 ... Return air duct 30 ... Outside air duct 40 ... Air conditioner 41 ... Coil 42 ... Evaporative humidifier 43 ... Blower fan 44 ... Cooling unit 45 ... 1st water supply pipe 50 ... Water supply pipe 60 ... Drain pipe 70 ... Air supply duct 80 ... First heat exchanger 90 ... Second water pipe 100 ... Exhaust duct 110 ... Second heat exchanger 120 ... Third water pipe

Claims (2)

A vaporizing humidifier that humidifies the air to be controlled;
A blower fan that blows air that has been humidified by the vaporizing humidifier into a room to be air-conditioned; and
A cooling unit for cooling the driving unit of the blower fan with cooling water;
A first unit that connects between the vaporizing humidifier and the cooling unit and supplies water for use in the humidifying process in the vaporizing humidifier by using the cooling water heated by performing the cooling process in the cooling unit. A water pipe ,
It is installed on a return air duct that takes in the return air from the air-conditioning control target room as control target air, takes in the cooling water that has not been vaporized by the humidification process in the vaporization type humidifier, and takes in from the return air duct A heat exchanger that performs a heat exchange process to absorb the remaining heat of the cooling water that has not been vaporized by the humidification process,
The vaporizing humidifier and the heat exchanger are connected, and cooling water that has not been vaporized in the vaporizing humidifier in the humidifying process is sent to the heat exchanger, and heat exchange treatment is performed in the heat exchanger. An air conditioning control system comprising: a second water pipe that circulates the cooled cooling water so that the cooling water is sent again for use in the cooling process by the cooling unit . The vaporizing humidifier of the air conditioning control system humidifies the controlled air,
The air blower fan of the air conditioning control system blows the air humidified by the vaporizing humidifier into the air conditioning control target room,
The cooling unit of the air conditioning control system performs a process of cooling the driving unit of the blower fan with cooling water,
In order to use the cooling water heated by performing the cooling process in the cooling unit by the first water pipe connected between the vaporizing humidifier and the blower fan for the humidifying process in the vaporizing humidifier. Water to
A heat exchanger installed on a return air duct that takes in return air from the air conditioning control target room as control target air takes in cooling water that has not been vaporized in the humidification process in the vaporizing humidifier, and Using the return air taken from the return air duct, a heat exchange process is performed to absorb the remaining heat of the cooling water that has not been vaporized by the humidification process,
The second water supply pipe connected between the vaporizing humidifier and the heat exchanger supplies cooling water that has not been vaporized in the vaporizing humidifier in the humidification process to the heat exchanger, and the heat exchange. The cooling water that has been heat exchanged in the cooler is circulated so as to be sent again for use in the cooling process in the cooling unit.
The air-conditioning control method characterized by the above-mentioned .

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