JP3306010B2 - Air conditioning system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air conditioning system capable of cooling outside air.

[0002]

2. Description of the Related Art In an office in which multimedia equipment is introduced, not only a heating load generated through a window or an outer wall but also a cooling load due to heat generation of the equipment occurs in winter. This cooling load occurs not only in summer, but also throughout the year, including in winter and in the middle. Therefore, it is necessary to operate a cooling heat source unit that performs annual cooling.

[0003]

The year-round operation of the cooling heat source unit consumes a large amount of energy of electricity, gas and kerosene, which has a bad influence on the global environment. In addition, since simultaneous operation of heating and cooling is required in winter, heat source equipment, piping equipment, pump equipment, control equipment, and the like capable of simultaneous operation of cooling and heating must be prepared, and equipment costs rise.

[0004] The present invention has been made in view of the above circumstances,
The goal is to provide cooling with sufficient capacity using outside air, which can save energy over the years, reduce equipment costs, and ensure the health of residents. It is to provide a system.

[0005]

An air-conditioning system according to the first aspect of the present invention is an indoor air circulating means for taking in room air and supplying it to the room again, and an outside air introducing means for introducing outside air and supplying it to the room. An air circulating means for mutually circulating the air taken in by the indoor air circulating means and the air introduced by the outside air introducing means; a first heat exchange means for cooling or heating the air taken in by the indoor air circulating means; Second heat exchange means for cooling or heating the introduced air of the introduction means, control means for executing the first outside air cooling operation by operation of the outside air introduction means, operation of the indoor air circulation means and the first heat exchange while performing the heating operation by the heating action of the means, and a control means for performing an appropriate flow effect and the second outdoor air cooling operation by the driver and the air flow means of the outside air introduction means, upper During operation of the outside air introduction means, the outside air guide
Exhaust the same amount of indoor air as the outside air
Exhaust means .

An air conditioning system according to a second aspect of the present invention is a room air circulating means which takes in room air and supplies it to the room again through a duct and a flow rate adjusting damper, and a duct and a flow rate adjusting damper for introducing outside air. Means for supplying outside air into the room through the air passage means, air circulation means for mutually flowing the intake air of the room air circulation means and the introduction air of the outside air introduction means through a duct and a damper for air volume adjustment, and intake of the room air circulation means First heat exchange means for cooling or heating air by heat exchange with heat energy given from outside, and second heat for cooling or heating air introduced by the outside air introduction means by heat exchange with heat energy given from outside. Exchange means; control means for executing a first outside air cooling operation by operation of the outside air introduction means; Control means for executing the second outside air cooling operation by the operation of the outside air introduction means and the appropriate circulation operation of the air circulation means while performing the operation of the means and the heating operation by the heating action of the first heat exchange means. And above
During operation of the outside air introduction means, the outside air introduction amount of the outside air introduction means
Exhaust means for discharging the same amount of indoor air to the outside of the room .

The air-conditioning system according to the third aspect of the present invention is limited to the exhaust means according to the first or second aspect.
I have decided. The exhaust means is an air vent that discharges indoor air to the outside.
It has an exhaust fan for conditioning and smoke exhaust.

An air-conditioning system according to a fourth aspect of the present invention is an air-conditioned room having a space under the floor and a space above the ceiling, and having a plurality of outlets on the floor, a plurality of inlets and a plurality of outlets on the ceiling. , Indoor air circulating means for taking in indoor air through each suction port on the ceiling surface and the space above the ceiling and supplying it to the underfloor space, and outside air for introducing outside air and supplying it to each outlet on the ceiling surface Introduction means, air circulation means for mutually circulating the intake air of the indoor air circulation means and the introduction air of the outside air introduction means, first heat exchange means for cooling or heating the intake air of the indoor air circulation means, A second heat exchange unit that cools or heats the introduced air of the outside air introduction unit; a control unit that executes a first outside air cooling operation by operating the outside air introduction unit; While performing the heating operation by the heating action of the rotation and the first heat exchange means, first by a proper distribution effect of operation and the air flow means of the outside air introduction means 2
And a control means for executing the outside air cooling operation, the outside air introduction hand
During the operation of the stage, the same amount of external air as the external air
Exhaust means for discharging air from the space above the ceiling to the outside of the room,
Is provided.

An air-conditioning system according to a fifth aspect of the present invention is an air-conditioned room having a space under the floor and a space above the ceiling, and having a plurality of outlets on the floor, a plurality of inlets and a plurality of outlets on the ceiling. , Indoor air circulating means for taking in indoor air through each suction port of the ceiling surface and the space above the ceiling and supplying it to the underfloor space through a duct and a damper for air volume control, and introducing outside air and introducing it into the duct and air volume control device Outside air introducing means for supplying to each outlet of the ceiling surface through the damper for the air, and air circulation means for mutually flowing the intake air of the room air circulation means and the introduction air of the outside air introduction means through the duct and the damper for air volume adjustment. ,
A first method of cooling or heating the intake air of the indoor air circulation means by heat exchange with heat energy given from outside;
A heat exchange means, a second heat exchange means for cooling or heating the introduced air of the outside air introduction means by heat exchange with heat energy given from the outside, and a first outside air cooling operation by operation of the outside air introduction means are executed. Control means for performing the heating operation by the operation of the indoor air circulation means and the heating action of the first heat exchange means, and the second operation by the operation of the outside air introduction means and the appropriate circulation action of the air circulation means. Control means for executing the outside air cooling operation of the outside air introduction means,
During operation, the same amount of air as the outside air introduction amount of the outside air introduction means
Exhaust means for discharging air from the space above the ceiling to the outside of the room .

According to a sixth aspect of the present invention, in the air conditioning system according to the fourth or fifth aspect, an air volume adjusting means is further provided at each of the outlets on the floor surface and each of the outlets on the ceiling surface.

The air-conditioning system according to the seventh aspect of the present invention is limited to the exhaust means according to the fourth or fifth aspect.
I have decided. The exhaust means exhausts the air in the space above the ceiling to the outside.
It has an exhaust fan for air conditioning and smoke exhaust.

An air conditioning system according to an eighth aspect of the present invention is the air conditioning system according to the third or seventh aspect, further comprising an exhaust switch for activating an exhaust fan in an emergency.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a room to be air-conditioned, which is provided with an underfloor space 3 below a floor surface 2 (double floor structure),
A space 5 behind the ceiling is provided behind the ceiling surface 4. A plurality of outlets 2 a are formed on the floor 2, and a plurality of inlets 4 a and a plurality of outlets 4 b are formed on the ceiling surface 4.

At each outlet 2a of the floor 2, a manual air volume adjusting unit 6 is provided as air volume adjusting means. By operating the air volume adjustment unit 6 to change the opening degree of the air outlet 2a, the air volume of the air outlet 2a can be adjusted.

At each outlet 4b of the ceiling surface 4, an automatic air volume adjusting unit 7 is provided as air volume adjusting means. The air volume adjustment unit 7 has a built-in air volume adjustment damper, for example, and can automatically adjust the air volume of the air outlet 4b.

A duct 11 is provided from the space 5 above the ceiling to the outdoor space, and the duct 11 is provided with an exhaust fan 12 for air conditioning and smoke exhaust. The exhaust fan 12 discharges the urethane air in the under-ceiling space 5 and the smoke at the time of fire through the duct 11 to the outside of the room.

One end of a duct 21 communicates with the space 5 above the ceiling, and a damper 31 for adjusting the air volume is provided at the other end of the duct 21. Then, the duct 22 is attached to the air volume adjusting damper 31.
Is connected, and the other end of the duct 22 is connected to the underfloor space 3.
Is communicated to. The duct 22 is provided with a first heat exchanger 32 and a fan 33.

This duct 21, an air volume adjusting damper 31,
The duct 22, the first heat exchanger 32, and the fan 33 constitute an indoor air circulation unit. That is, when the fan 33 is started, the room air is supplied to each of the suction ports 4 a of the ceiling surface 4.
Then, the air is sucked into the duct 21 through the space 5 above the ceiling, and is supplied to the underfloor space 3 through the damper 31 for adjusting the air volume, the duct 22, and the first heat exchanger 32.

An outside air intake 23 is provided on the outer wall surface of the building, and one end of a duct 24 is connected thereto. Duct 24
Is provided with an air volume adjusting damper 41 at the other end. One end of the duct 25 is connected to the air volume adjusting damper 41, and the other end of the duct 25 is connected to the air volume adjusting unit 7 in the space 5 above the ceiling. The duct 25 is provided with a second heat exchanger 42 and a fan 43.

The outside air intake 23, the duct 24, the damper 41 for adjusting the air volume, the duct 25, the second heat exchanger 42, and the fan 43 constitute outside air introduction means. That is, when the fan 43 is started, the outside air flows into the outside air intake 23.
The air is then sucked into the duct 24, and is supplied to the air outlets 4 b of the ceiling surface 4 through the air volume adjusting damper 41, the duct 25, and the second heat exchanger 42.

One end of a duct 26 is connected to a middle part of the duct 21 in the indoor air circulation means, and the other end of the duct 26 is connected to a middle part of the duct 24 in the outside air introduction means. The duct 26 is provided with an air volume adjusting damper 27.

The duct 26 and the damper 2 for adjusting the air volume
7, the air flow adjusting dampers 31 and 41 are further added to allow the intake air (the air in the duct 21) of the indoor air circulation means and the air introduced by the outside air introduction means (the outside air in the duct 24) to flow through each other. Means are configured.

The first heat exchanger 32 cools or heats the intake air (air in the duct 21) of the indoor air circulating means by heat exchange with heat energy supplied from an external heat source device 50. It is connected to a heat source device 50 as a heat energy source via 51 and 52 and a water pump 53.

The second heat exchanger 42 cools or heats the air introduced into the outside air introducing means (air in the duct 24) by heat exchange with heat energy given from the heat source device 50. The heat source device 50 is connected to the heat source device 50 via a water supply pump 55 and a water supply pump 56.

The heat source unit 50 generates cold water for cooling or hot water for heating as heat energy. These ducts 2
1, 22, 24, 25, 26, air volume adjustment damper 27,
31, 41, heat exchangers 32, 42, fans 33, 43,
The water pipes 51, 52, 54, 55, the pumps 53, 56, and the heat source device 50 constitute an air conditioning unit for air conditioning the room to be air-conditioned 1.

On the other hand, an operation unit 61 and an exhaust switch 62 are mounted on a side wall surface or the like in the room 1 to be air-conditioned. The operation unit 61 sets the ventilation state (opening / closing, ventilation amount) of the air volume adjustment unit 7 provided at each of the outlets 4 b of the ceiling surface 4, and sets a predetermined plurality of zones in the air-conditioned room 1. For setting the target indoor temperature.

The exhaust switch 62 is provided for activating the exhaust fan 12 in an emergency such as when a fire occurs or on a trial basis. The control circuit is shown in FIG.

The controller 70 includes a damper 2 for adjusting the air volume.
7, 31, 41 drive motors 27M, 31M, 41M,
The drive motors 33M and 43M of the fans 33 and 43, the drive motors 53M and 56M of the pumps 53 and 56, the heat source device 50,
Driving motors 8M, 8M, 8M for the air volume adjusting dampers in each air volume adjusting unit 7, and driving motors 12 for the exhaust fan 12
M, an outside air temperature sensor 71, an operation unit 61, and an exhaust switch 62 are connected.

The outside air temperature sensor 71 detects the temperature of outside air. The exhaust switch 62 has an emergency button 62a that can push the push button inside by breaking the transparent plate on the surface when pressed by a finger, and a see-saw that can operate and stop the exhaust fan 12 at normal times. It has a formula operation button 62b.

The drive motor 12M of the exhaust fan 12
Is connected to a power supply via a first contact which is closed upon receiving a push operation of the emergency button 62a, and is connected to a power supply via a second contact which is opened and closed by the controller 70.

The controller 70 controls the entire air conditioning system, and has the following main functions [1] to [ 5 ]. [1] By operation of outside air introduction means (operation of fan 43)
Control means for executing a first outside air cooling operation; This operation control (outside air cooling mode) is selected in winter or an intermediate period.

[2] Operation of Indoor Air Circulation Means (Fan 3
3 of operation) and the heating effect of the first heat exchanger 32 (while performing the heating operation by the driver of the hot water generator and the pump 53 of the heat source apparatus 50), operation of the outside air introducing means (the operation of the fan 4 3)
And the appropriate flow action of the air flow means (air flow adjusting damper 2)
Control means for executing a second outdoor air cooling operation based on (7) , ( 31, 41) intake of urethane air according to the degree of opening. This operation control (heating / outside air cooling mode) is selected in winter or an intermediate period. Instead of the appropriate circulation operation of the air circulation means, an appropriate heating operation of the second heat exchanger 42 (the generation of hot water by the heat source device 50 and the operation of the pump 56) may be used.

[ 3 ] Operation of Indoor Air Circulation Means (Fan 3
3) and the cooling operation of the first heat exchanger 32 (the generation of cold water of the heat source unit 50 and the operation of the pump 53) to perform the indoor air circulation type cooling operation and the operation of the outside air introducing means (the operation of the fan 43). ) And the cooling operation of the second heat exchanger 42 (the generation of cold water of the heat source unit 50 and the operation of the pump 56) to execute the cooling operation of the outside air introduction type, and to appropriately circulate the air circulating means (the air volume adjusting dampers 27, Control means for performing mixing of the urethane air and the outside air in accordance with the degree of opening of the first and the third air. This operation control (cooling mode) is selected in summer.

[ 4 ] Ventilation state of each air volume adjustment unit 7 set by operation unit 61 and operation unit 61
Control means for controlling the degree of opening of the air volume adjusting dampers in each air volume adjusting unit 7 in accordance with the target indoor temperature of each zone set in the above.

[ 5 ] Control means for controlling the opening and closing of the second contact in accordance with the on / off operation of the seesaw operation button 62b of the exhaust switch 62.

(1) Winter (when a heating load and a cooling load are generated) In a situation where a heating load and a cooling load are generated in the air-conditioned room 1 as in winter, first, the operation of the indoor air circulation means (fan Heating is performed by the operation of the first heat exchanger 32 (the operation of the heat source device 50 and the operation of the pump 53).

That is, the fan 33 is activated, and the room air is sucked into the duct 21 through the respective suction ports 4 a of the ceiling surface 4 and the space 5 above the ceiling. The sucked air passes through the air volume adjusting damper 31 and the duct 22, is further heated by the first heat exchanger 32, and is supplied to the underfloor space 3. The warm air supplied to the underfloor space 3 is blown into the room from each outlet 2a of the floor surface 2.

The opening and closing of each outlet 2a and the amount of ventilation can be appropriately set by the operation of the resident on each air volume adjusting unit 6. Thereby, a required amount of hot air can be supplied to a zone requiring heating.

[0039] At the same time, the operation of the outside air introduction means (fan 4 3
) And the appropriate circulation action of the air circulation means (renewal air intake according to the opening degree of the air volume adjustment dampers 27, 31 and 41) cools the outside air.

That is, the fan 43 is started, and the outside air is sucked into the duct 24 through the outside air intake 23. Also,
A part of the room air passing through the duct 21, that is, the urethane air, is distributed to the duct 24 side through the duct 26 and the air volume adjusting damper 27, and is mixed with the outside air in the duct 24. By this mixing, the temperature of the outside air is increased to a level that does not impair the cooling effect (a temperature lower than the room temperature), and an excessive decrease in the room temperature is avoided.

The mixed air in the duct 24 passes through the air volume adjusting damper 41, the duct 25, and the second heat exchanger 42, and is supplied to each outlet 4b of the ceiling surface 4. The air supplied to each outlet 4b is blown into the room from each outlet 4b of the ceiling surface 4. In this case, the cooling action of the second heat exchanger 42 is unnecessary.

The opening and closing of each outlet 4b and the amount of ventilation are adjusted by the operation of the resident on the operation unit 61 and the operation of each air volume adjusting unit 7 according to the operation. Thereby, a required amount of cold air can be supplied to a zone requiring cooling.

During the heating / cooling of the outside air, the exhaust fan 12 is operated, and the air in the space 5 above the ceiling is discharged outside through the duct 11. For the displacement,
Damper 2 for speed control or air volume adjustment of exhaust fan 12
The opening degree control of 7, 31, 41 sets the same state as the outside air introduction amount from the duct 24.

FIG. 3 shows the relationship among the amount of outside air introduced, the amount of air blown for cooling, the amount of air blown for heating, and the amount of exhaust air. Regarding the amount of outside air introduced, by controlling the speed of the fan 43, it is possible to introduce a larger amount of outside air (an amount of outside air corresponding to the cooling load) than the required amount of fresh outside air in consideration of the occupants' health and the like. Cooling capacity is obtained.

(2) Intermediate period between winter and summer (when a cooling load is generated and the outside air temperature is in a state where the outside air can be cooled) During the intermediate period when a cooling load is generated, the operation of the outside air introducing means (fan) 43)).

That is, the fan 43 is started, and the outside air is sucked into the duct 24 through the outside air intake 23. The sucked outside air is supplied to the air outlets 4b of the ceiling surface 4 through the air volume adjusting damper 41, the duct 25, and the second heat exchanger 42, and is blown into the room from there. The cooling action of the second heat exchanger 42 is unnecessary.

The opening and closing of each outlet 4b and the amount of air flow are adjusted by the operation of the resident on the operation unit 61 and the operation of each air volume adjusting unit 7 according to the operation. Thereby, a required amount of cold air can be supplied to a zone requiring cooling.

At the same time, the fan 33 is activated, and the room air is sucked into the duct 21 through the respective suction ports 4 a of the ceiling surface 4 and the space 5 above the ceiling. A part of the outside air passing through the duct 24 is distributed to the duct 21 through the duct 26 and the air volume adjusting damper 27 and is mixed with the urethane air in the duct 21. This mixing lowers the temperature of the ethane air.

The mixed air in the duct 21 is supplied to the underfloor space 3 through the damper 31 for adjusting the air volume, the duct 22, and the first heat exchanger 32. The air supplied to the underfloor space 3 is blown into the room from each outlet 2a of the floor surface 2. In this case, the cooling action of the first heat exchanger 32 is unnecessary.

The opening and closing of each outlet 2a and the amount of air flow can be appropriately set by the operation of the resident on each air volume adjusting unit 6. Thereby, a required amount of cold air can be supplied to a zone requiring cooling.

When the outside air is cooled, the exhaust fan 12 is operated, and the urethane air in the space 5 above the ceiling is removed from the duct 1.
It is discharged outside through 1. Regarding the exhaust volume, the speed control of the exhaust fan 12 or the air volume adjusting dampers 27, 3
By the opening degree control of 1, 41, it is set to the same state as the amount of outside air introduced from the duct 24.

FIG. 4 shows the relationship among the amount of outside air introduced, the amount of air blown for cooling, and the amount of exhaust air. Regarding the amount of outside air introduced, the fan 43
With this speed control, it is possible to introduce a larger amount of outside air (an amount of outside air commensurate with the cooling load) than the required amount of fresh outside air in consideration of the occupant's health and the like, and sufficient cooling capacity can be obtained.

(3) Summer (when a cooling load is generated) In a summer when only a cooling load is generated, the operation of the indoor air circulation means (the operation of the fan 33) and the cooling operation of the first heat exchanger 32 (the operation of the heat source unit 50) are performed. The cooling operation of the indoor air circulation type by the cold water generation and the operation of the pump 53 is executed, the operation of the outside air introducing means (the operation of the fan 43) and the cooling action of the second heat exchanger 42 (the cold water generation of the heat source unit 50). And pump 56
Operation), the outside air introduction type cooling operation is performed, and the air circulation means appropriately circulates (air volume adjustment dampers 27, 3).
(The mixing of the urethane air and the outside air) according to the opening degree of the first and the fourth air.

First, the operation of the indoor air circulation means (fan 3
3) and the cooling action of the first heat exchanger 32 (the generation of cold water of the heat source unit 50 and the operation of the pump 53) perform indoor air circulation type cooling.

That is, the fan 33 is started, and the room air is sucked into the duct 21 through the respective suction ports 4 a of the ceiling surface 4 and the space 5 above the ceiling. The sucked air passes through the air volume adjusting damper 31 and the duct 22, is further cooled by the first heat exchanger 32, and is supplied to the underfloor space 3. The cool air supplied to the underfloor space 3 is blown into the room from each outlet 2a of the floor surface 2.

The opening and closing of each outlet 2a and the amount of air flow can be appropriately set by the operation of the resident on each air volume adjusting unit 6. Thereby, a required amount of cold air can be supplied to a zone requiring cooling.

At the same time, the operation of the outside air introducing means (the fan 33
Operation) and the cooling action of the second heat exchanger 42 (the heat source unit 5).
0 cold water generation and operation of the pump 56), the outside air introduction type cooling is performed.

That is, the fan 43 is started, and the outside air is sucked into the duct 24 through the outside air intake 23. The sucked outside air passes through the air volume adjusting damper 41 and the duct 25, is further cooled by the second heat exchanger 42, is supplied to the respective outlets 4 b of the ceiling surface 4, and is blown into the room from there.

The opening and closing of each air outlet 4b and the amount of air flow are adjusted by the operation of the resident on the operation unit 61 and the operation of each air volume adjusting unit 7 according to the operation. Thereby, a required amount of cold air can be supplied to a zone requiring cooling.

A part of the air in the duct 21 and a part of the outside air in the duct 24 are mutually circulated through the duct 26 and the air volume adjusting damper 27 and mixed. This mixed air is supplied to the room.

At the time of this cooling, the exhaust fan 12
Is operated, and the urethane air in the space 5 above the ceiling is discharged outside through the duct 11. Regarding the exhaust volume, the speed control of the exhaust fan 12 or the dampers 27, 31,
By the opening degree control of 41, it is set to be the same as the amount of outside air introduced from the duct 24.

(4) Specific examples of air volume control according to various operation modes are shown in FIG. As described above, by performing the outside air cooling in the winter or the middle period, it is not necessary to obtain the cooling energy from the heat source unit 50, and the energy saving effect can be obtained.

Further, in winter, in addition to the energy saving effect obtained by reducing the cooling energy based on the outside air cooling, the introduced outside air is used only for processing the cooling load and does not become the heating load. Therefore, as a result, the heating energy during heating / air cooling is reduced, and the energy saving effect is increased.

Further, since a large amount of fresh outside air is introduced during the outside air cooling, the indoor air quality (IAQ) can be improved.
Residents' health can be ensured. By the way, conventionally, in order to cope with the cooling load throughout the year, heat source equipment, piping equipment, pump equipment, control equipment and the like capable of simultaneous cooling and heating operation are required, but according to this embodiment, in the summer, Only cold energy is required, neither cold energy nor hot energy is required in the interim period, only warm energy is required in winter, meaning that there is no need to simultaneously generate and transport both cold energy and hot energy, greatly simplifying equipment Therefore, equipment costs can be greatly reduced.

Since the heat source unit 50 can be stopped during the intermediate period, appropriate maintenance can be performed during the stop period, and the life of the heat source unit 50 can be improved.

Conventionally, a boundary line between the interior zone and the perimeter zone is provided, for example, every 1 m from the outer wall surface in the winter season to cope with the assumption that a cooling load is generated in the interior zone and a heating load is generated in the perimeter zone. It is common to provide an air conditioning system, but due to external weather conditions such as cold and warm, solar radiation, uneven distribution of office equipment heat, actual conditions of personnel and lighting, etc., the cooling load and heating load may not always be as expected. It is a fact. Depending on the space, it may be too hot or too cold.

On the other hand, in this embodiment, each outlet 2
a, 4b, the ceiling surface 4 is adjusted according to the distribution and size of the cooling load and the heating load.
The resident can freely select the position and amount of the cool air blown from the floor and the position and amount of the warm air blown from the floor 2. Therefore, a comfortable indoor environment can be secured. This effect is particularly noticeable in a small room with a window.

On the other hand, according to the Building Standards Law, the installation of smoke exhaust equipment is required for certain buildings in order to secure a safe evacuation route in case of fire. This smoke exhaust system is composed of a smoke exhaust device and a smoke exhaust start switch, and is operated in the event of a fire in order to facilitate initial evacuation. However, in reality, there is no opportunity for the resident to actually drive.

On the other hand, in this embodiment, the resident can easily grasp the existence and the position of the exhaust switch 62 as the smoke exhaust facility, and furthermore, operates the seesaw type operation button 62b of the exhaust switch 62. Since the exhaust fan 12 can be freely operated and stopped, it is possible to easily experience and understand the situation at the time of start-up as a smoke exhaust system, and to smoothly and quickly reduce smoke exhaustion and initial blame during a fire. Can be done.

Further, since the exhaust fan 12 is used not only as a smoke exhaust facility but also for exhausting the ethane air, the facility cost can be reduced. In the above embodiment, the outlet and the suction port are provided on the floor 2 and the ceiling 4 respectively.
Not only the ceiling surface 4 but also the side wall surface in the room can be appropriately selected.

Although the application to the office in which the multimedia equipment is installed has been described, the invention can be similarly applied to a place where cooling is required even in winter, such as a shopping store or a factory. In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention.

[0072]

As described above, according to the present invention, it is possible to perform cooling with sufficient capacity by introducing outside air, thereby achieving an energy saving effect over a year and reducing equipment costs. It is possible to provide an air conditioning system that can ensure the health of residents.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of one embodiment.

FIG. 2 is a block diagram of a control circuit according to the embodiment.

FIG. 3 is a diagram showing the interrelationship between the amount of outside air introduced, the amount of air for cooling, the amount of air for heating, and the amount of exhaust air during the winter operation of the embodiment.

FIG. 4 is a diagram showing the interrelationship between the amount of outside air introduced, the amount of air blown for cooling, and the amount of exhaust air during an intermediate operation of the embodiment.

FIG. 5 is a diagram showing a specific example of air volume control according to various operation modes of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Room to be air-conditioned 2 ... Floor surface 2a ... Outlet 3 ... Underfloor space 4 ... Ceiling 4a ... Inlet 4b ... Outlet 5 ... Above ceiling space 12 ... Exhaust fan 21, 22, 24, 25, 26 ... Duct 27, 31, 41 ... Damper for adjusting air volume 33, 43 ... Fan 50 ... Heat source unit 61 ... Operation unit 62 ... Exhaust switch 70 ... Controller

Continuation of the front page (56) References JP-A-8-49877 (JP, A) JP-A-5-66044 (JP, A) JP-A-6-313582 (JP, A) JP-A-6-193947 (JP) , A) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 11/02 102

Claims (8)

(57) [Claims] 1. Indoor air circulation means for taking in room air and supplying it to the room again, outside air introduction means for introducing outside air and supplying it to the room, intake air of said indoor air circulation means and said outside air introduction means An air circulating means for mutually circulating the introduced air, a first heat exchange means for cooling or heating the intake air of the indoor air circulating means, and a second heat or cooling means for cooling or heating the introduced air of the outside air introducing means.
A heat exchange unit, a control unit that executes a first outside air cooling operation by operating the outside air introduction unit, and a heating operation that performs an operation of the indoor air circulation unit and a heating action of the first heat exchange unit, Control means for performing a second outside air cooling operation by the operation of the outside air introduction means and an appropriate circulation action of the air circulation means, and the operation of the outside air introduction means during the operation of the outside air introduction means.
An air- conditioning system comprising: an exhaust unit that discharges the same amount of indoor air as the amount of air entering the room . 2. Room air circulation means for taking in room air and supplying it again through a duct and a flow rate adjusting damper to the room, and outside air introducing means for introducing outside air and supplying it to the room through a duct and a flow rate adjusting damper. Air circulating means for mutually circulating the intake air of the indoor air circulating means and the introduced air of the outside air introducing means through a duct and a damper for adjusting the air volume; and a heat energy supplied from outside to the intake air of the indoor air circulating means. Cooling or heating by heat exchange
Heat exchange means, second heat exchange means for cooling or heating the introduced air of the outside air introduction means by heat exchange with heat energy given from the outside, and executing first outside air cooling operation by operation of the outside air introduction means Control means for performing the operation of the indoor air circulation means and the heating operation by the heating action of the first heat exchange means while performing the second operation by the operation of the outside air introduction means and the appropriate circulation action of the air circulation means. Control means for executing the outside air cooling operation of the outside air introduction means;
An air- conditioning system comprising: an exhaust unit that discharges the same amount of indoor air as the amount of air entering the room . 3. The air-conditioning system according to claim 1, wherein said exhaust means includes an air- conditioning system for discharging room air to the outside of the room.
An air conditioning system having an exhaust fan for exhausting smoke and smoke . 4. An air-conditioned room having a space under the floor and a space behind the ceiling, and having a plurality of outlets on the floor, a plurality of suction ports and a plurality of outlets on the ceiling, Indoor air circulating means for taking in the air through each suction port and the space above the ceiling and supplying it to the underfloor space; external air introducing means for introducing outside air and supplying it to each outlet on the ceiling surface; Air circulating means for mutually circulating intake air of the outside air and the introduction air of the outside air introduction means, first heat exchange means for cooling or heating the intake air of the indoor air circulation means, and cooling the introduction air of the outside air introduction means Or the second to heat
A heat exchange unit, a control unit that executes a first outside air cooling operation by operating the outside air introduction unit, and a heating operation that performs an operation of the indoor air circulation unit and a heating action of the first heat exchange unit, Control means for performing a second outside air cooling operation by the operation of the outside air introduction means and an appropriate circulation action of the air circulation means, and the operation of the outside air introduction means during the operation of the outside air introduction means.
Discharge the same amount of air from the space above the ceiling outside the room
Air conditioning system characterized by comprising an exhaust means, the that. 5. An air-conditioned room having an underfloor space and a space above a ceiling, and having a plurality of outlets on a floor surface, a plurality of suction ports and a plurality of outlets on a ceiling surface, wherein indoor air is supplied to the ceiling surface. An indoor air circulation means which takes in the air through each suction port and the space above the ceiling and supplies it to the underfloor space through a duct and a damper for air volume control; Outside air introduction means to be supplied to an outlet; air circulation means for mutually flowing the intake air of the indoor air circulation means and the introduction air of the outside air introduction means through a duct and a damper for air volume adjustment; and intake air of the indoor air circulation means Cooling or heating by heat exchange with heat energy given from the outside
A heat exchange unit, a second heat exchange unit that cools or heats the introduced air of the outside air introduction unit by heat exchange with heat energy given from the outside, and executes a first outside air cooling operation by operating the outside air introduction unit. And a second control unit that controls the operation of the outside air introduction unit and the appropriate circulation operation of the air circulation unit while performing the operation of the indoor air circulation unit and the heating operation by the heating operation of the first heat exchange unit. Control means for executing the outside air cooling operation of the outside air introduction means;
Discharge the same amount of air from the space above the ceiling outside the room
Air conditioning system characterized by comprising an exhaust means, the that. 6. The air conditioning system according to claim 4, wherein an air volume adjusting means is provided at each of the outlets on the floor surface and at each of the outlets on the ceiling surface. 7. The air conditioning system according to claim 4, wherein the exhaust means exhausts the air in the space above the ceiling to the outside.
An air conditioning system having an exhaust fan for air conditioning and smoke exhaust . 8. The air conditioning system according to claim 3, wherein an exhaust switch for activating the exhaust fan in an emergency is provided in the room.