KR20180035291A - Air conditioning system - Google Patents

Abstract

According to one embodiment of the present invention, an air conditioning system comprises: an air conditioning unit; a chiller unit; a bypass damper; a coolant valve; a temperature sensor; and a control portion. The air conditioning unit includes: an indoor air suction portion; a heat exchanger exchanging heat with air introduced into the indoor air suction portion; and a bypass portion bypassing the heat exchanger to introduce air. A heating heater can be disposed in an air conditioning chamber where the air conditioning unit is installed. The chiller unit can be connected to the heat exchanger and a cold water circulation passage. The bypass damper can be installed in the bypass portion. The coolant valve can be installed in the cold water circulation passage. The temperature sensor can measure the temperature. In a heating preheating control mode, the control portion controls the coolant valve to be fully closed so that the heating heater can be turned on. Accordingly, in a heating preheating mode, air which is heated by the heating heater is introduced into the indoor air suction portion and is not cooled in the heat exchanger, so heating can be performed.

Description

[0001] AIR CONDITIONING SYSTEM [0002]

The present invention relates to an air conditioning system, and more particularly, to an air conditioning system including a heating heater controlled by a control unit.

Background Art [0002] Generally, an air conditioner is a device for creating a more comfortable indoor environment for a user, and can control at least one of temperature, humidity, and cleanliness of air.

The air conditioner is a system for cooling, heating or ventilating a space to be air-conditioned by an operation of sucking air in the room, exchanging heat with coolant of low temperature or high temperature and discharging it into the room, And a refrigerating cycle of a refrigerant consisting of a condenser (condenser or evaporator) and a second heat exchanger (evaporator or condenser).

As is well known, the air conditioner is largely divided into a separate type air conditioner in which an outdoor unit and an indoor unit are separated from each other, and an integral type air conditioner in which an outdoor unit and an indoor unit are integrally installed. Of air conditioners.

Particularly, a large-capacity air conditioner can have a structure in which an indoor unit and an outdoor unit are integrally formed, and a high-grade structure of air harmonized with a plurality of air conditioning spaces required for air conditioning by a duct or the like can be obtained.

Further, among the large-capacity air conditioners, the air conditioner is configured to mix the outside air (outdoor air) with the indoor air at an appropriate ratio in accordance with the target load amount according to the temperature, humidity, and cleanliness of the target space 'Air Handling Unit'.

Such an air handling unit can be configured for each module according to each function so that the system can be efficiently driven according to the load capacity of the target space.

An object of the present invention is to provide an air conditioning system equipped with a heating heater for raising the temperature of air flowing into an air conditioning unit.

Another object of the present invention is to provide an air conditioning system capable of heating by regulating the amount of cold water flowing into a heat exchanger.

An air conditioning system according to an embodiment of the present invention includes an air conditioning unit; Heating heater; Chiller unit; Bypass damper; Cooling water valve; temperature Senser; And a control unit.

The air conditioning unit may include an indoor air suction unit, a heat exchanger for performing heat exchange with the air introduced into the indoor air suction unit, and a bypass unit for bypassing the heat exchanger to introduce air. A heating heater may be disposed in an air conditioning room in which the air conditioning unit is installed. The chiller unit can be connected to the heat exchanger and the cold water circulation channel. The bypass damper may be installed in the bypass unit. The cooling water valve may be installed in the cold water circulation passage. The temperature sensor can measure the temperature.

In the heating preheating control mode, the control unit controls the cooling water valve to be fully closed so that the heating heater can be turned on.

According to this, in the heating preheating mode, the air heated by the heating heater flows into the indoor air intake part and can not be cooled in the heat exchanger, so that heating can be performed.

The control unit may control the bypass damper to be fully closed in a heating preheating mode.

The air conditioning system according to an embodiment of the present invention may further include an exhaust damper disposed in the air conditioning room. The air conditioning unit may further include an outside air suction unit having an outside air damper, and the control unit may control the exhaust damper and the outside air damper.

The control unit may control the outdoor air damper and the exhaust damper to be fully closed in the heating / warming-up control mode.

Wherein the controller performs the heating preheating control mode when the measured temperature sensed by the temperature sensor is lower than the preheating determination temperature and if the measured temperature exceeds the preheating determination temperature, The damper, and the cooling water valve.

The control unit may control the outside air damper and the exhaust damper in a set opening degree at the time of entering the regular control mode so that each of the bypass damper and the cooling water valve is fully opened and the heating heater can be turned off.

The control unit can preferentially control the bypass damper over the cooling water coil when the measured temperature is lower than the lower limit set value of the desired temperature in the regular control mode.

The control unit may control the bypass damper to stop the bypass damper until the measured temperature is equal to or higher than the lower limit set value of the desired temperature or when the bypass damper is fully opened, The opening degree can be increased by the first predetermined opening degree by the first predetermined opening degree.

Wherein the control unit sets the opening degree of the cooling water valve to a second value when the measured temperature is lower than the lower limit set value of the desired temperature and the bypass damper is fully opened, And can be decreased by the second set opening degree in the set period.

The control unit may control the cooling water valve more preferentially than the bypass damper when the measured temperature exceeds the upper limit set value of the desired temperature in the regular control mode.

Wherein the control unit controls the opening degree of the cooling water valve until the measured temperature is equal to or lower than the upper limit set value of the desired temperature or until the cooling water valve is fully opened, when the measured temperature exceeds the upper limit set value of the desired temperature And may be increased by a third set opening degree in a third predetermined period.

Wherein the control unit controls the bypass damper so that when the measured temperature is higher than the upper limit set value of the desired temperature and the cooling water valve is fully opened, the bypass valve is closed until the measured temperature is lower than the upper limit set value of the desired temperature, Can be reduced by the fourth predetermined opening degree by a fourth predetermined period.

According to a preferred embodiment of the present invention, the temperature of the air introduced into the air conditioning unit by the heating heater is increased, so that indoor heating can be performed.

In addition, the amount of cold water introduced into the heat exchanger can be controlled to enable indoor heating.

In addition, indoor air can be circulated by interrupting the inflow of outside air and heating the room.

1 is a perspective view of an air conditioning unit according to an embodiment of the present invention viewed from one direction.
2 is a perspective view of the air conditioning unit according to an embodiment of the present invention viewed from another direction.
3 is a view showing the inside of an air conditioning unit according to an embodiment of the present invention.
4 is a perspective view showing the mixing unit.
5 is an exploded perspective view of the mixing unit.
6 is a perspective view showing the air blowing unit.
7 is an exploded perspective view of the air blowing unit.
8 is an exploded perspective view of the control unit.
9 is a perspective view showing the take-out unit.
10 is an exploded perspective view of the take-out unit.
11 is a view schematically showing an air conditioning unit according to another embodiment of the present invention.
12 is a perspective view showing a blowout unit of an air conditioning unit according to another embodiment of the present invention.
13 is a configuration diagram illustrating an example of an air conditioning system including an air conditioning unit according to an embodiment of the present invention.
14 is a control block diagram for controlling the air conditioning system.
15 is a flowchart showing the operation sequence of the air conditioning system during the cooling operation.
16 is a flowchart showing the operation sequence of the air conditioning system during the heating operation.
17 is a flowchart showing the operation sequence of the air conditioning system in the regular control mode.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of an air conditioning unit according to an embodiment of the present invention, viewed from one direction, and FIG. 2 is a perspective view of an air conditioning unit according to an embodiment of the present invention.

Referring to Figs. 1 and 2, the air conditioning unit 1 according to the present embodiment may include a main body 10. The main body 10 may be integrally formed.

The air conditioning unit 1 may include a mixing unit 100 and an air blowing unit 200. The air conditioning unit (1) may further include a blowout unit (300). At this time, the main body 10 is not integrally formed but can be formed in accordance with the combination of the mixing unit 100, the air blowing unit 200, and the blowout unit 300.

The body 10 may have a substantially rectangular parallelepiped shape, but is not limited thereto.

The blowing unit 200 can be disposed between the mixing unit 100 and the blowout unit 300. [ This is for blowing the air mixed in the mixing unit 100 to the blowout opening 310 formed in the blowout unit 300 by the blowing mechanism 210 provided inside the blowing unit 200.

For example, the mixing unit 100 may be disposed above the blowing unit 200 and the blowing unit 300 may be disposed above the blowing unit 300.

The air conditioning unit 1 can supply air to the room 50 (see Fig. 11) to harmonize the air in the room 50. [ The air conditioning unit 1 can blow air through a duct communicating with the room 50.

The main body 10 may include an indoor air suction unit 110, an external air suction unit 120, and a bypass unit 130. More specifically, the mixing unit 100 may include an indoor air suction unit 110, an external air suction unit 120, and a bypass unit 130. The indoor air suction unit 110, the outdoor air suction unit 120, and the bypass unit 130 are preferably located on different surfaces of the mixing unit 100, respectively.

The indoor air suction unit 110, the ambient air suction unit 120 and the bypass unit 130 are not located on the upper surface of the main body 10 but on the peripheral surface of the main body 10 in order to lower the overall height of the air conditioning unit 1. [ Is preferred.

Indoor air can be introduced into the indoor air intake unit 110. At this time, the indoor air may refer to the return air (RA) circulated in the indoor space 50 and returned. The circulating air RA may have a relatively high temperature and a high carbon dioxide (CO 2) concentration due to body temperature and respiration of people in the room 50.

Outdoor air (OA: outdoor air) may be introduced into the outside air suction unit 120. The ambient air (OA) may have a relatively low CO 2 partial pressure.

Circulated air RA circulated and returned through the room 50 can be introduced into the main body 10 by bypassing the indoor air sucking unit 110 to the bypass unit 130. [

The air introduced into the indoor air suction unit 110, the external air suction unit 120, and the bypass unit 130 can be mixed in the main body 10. In more detail, the air introduced into the indoor air intake unit 110, the ambient air intake unit 120, and the bypass unit 130 may be mixed in the mixing unit 100.

At least one of the outside air suction unit 120 and the bypass unit 130 may be provided with a damper. For example, the outside air suction unit 120 may include an outside air damper 121, and the bypass unit 130 may include a bypass damper 131.

The dampers may include a vane for adjusting the opening degree of the passage through which the air flows according to the rotation angle, and a damper actuator for operating the vane. The control unit 90 can control the opening degree of each damper by operating the damper actuator. By operating the damper actuator under the control of the control unit 90, the rotational angle of the vane can be controlled.

An increase in the damper opening may mean that the damper is open. A decrease in the damper opening degree may mean that the damper is closed.

The control unit 90 can control the outside air OA and the circulating air RA flowing into the main body 10 by controlling the opening degree of the outside air damper 121 and the bypass damper 131. [

The main body 10 may be connected to a cold water circulation passage 114. More specifically, the mixing unit 100 may be connected to a cold water circulation passage 114. The cold water circulating flow path 114 may include an inlet flow path 115 and an outlet flow path 116. The cold water circulation passage 114 may be connected to a heat exchanger 131 to be described later.

A blowing mechanism 210 may be disposed inside the main body 10. [ More specifically, the air blowing unit 210 may be included in the air blowing unit 200. The blowing mechanism 210 may blow air mixed in the mixing unit 100 to the blowout unit 300.

Therefore, the blowing mechanism 210 may be positioned below the room air intake unit 110, the outside air intake unit 120, and the bypass unit 130, and may be located above the air outlet 310.

At least one outlet 310 may be formed in the main body 10. More specifically, the blowout unit 300 may include at least one blowout opening 310. The air outlet 310 may be located on the bottom surface of the main body 10 but may be formed on the peripheral surface of the main body 10 to reduce the height of the entire air conditioning unit 1. [

The air outlet 310 may be selectively openable and closable.

The blowout opening 310 may be a hole formed by opening at least a part of one surface of the blowout unit 300.

Out port 310 may be formed on at least one of the circumferential surfaces of the take-out unit 300. For example, the outlet 310 may be formed on the left side and the right side of the blowout unit 300.

The air mixed in the mixing unit 100 flows through the air blowing unit 200 to the blowout unit 300 by the blowing mechanism 210 and can be taken out to the blowout opening 310. At this time, the air mixed in the mixing unit 100 and taken out to the air outlet 310 may mean supply air (SA).

The main body 10 may be provided with at least one check door. For example, the mixing unit 100 may include a mixing unit check door 140. The manager can open the mixing unit check door 140 to perform the maintenance operation of the mixing unit 100. [ The mixing unit check door 140 may be installed on the surface of the mixing unit 100 other than the surface on which the indoor air suction unit 110, the external air suction unit 120, and the bypass unit 130 are located.

The main body 10 may be provided with a control unit 290. The controller 295 included in the control unit 290 may include an inverter drive, an interface (HMS: Human-Machine Interface), and the like.

The controller 295 may be a control unit of the air conditioning unit 1. [

The inverter drive of the controller 295 can control the number of revolutions of the motor of the blowing mechanism to set the air volume or the positive pressure for each site. This allows the air conditioning unit to be operated under optimum conditions. Further, the user can control the air volume of the air supply unit SA, the operation state of the air conditioning unit 1, etc. by operating the interface, confirm the operation history, control the air conditioning unit to operate according to the set schedule It is possible.

The controller 295 may include a communication unit. The communication unit can communicate with the central control unit. The central control unit may be a building management system (BMS) of a building in which the air conditioning unit 1 is installed. Therefore, central control and monitoring through communication can be possible.

The control unit 290 may be a control box. The control unit 290 can be installed on the outer surface of the main body 10. [ That is, the portion where the interface is located in the control unit 290 may be exposed to the outside of the main body 10. [ Thereby, the user can easily access the interface of the control unit 290 to control the air conditioning unit 1, and the control convenience can be increased.

When the control unit 290 is installed in the mixing unit 100, it may obstruct the flow of the air flowing into the mixing unit 100, and the position of the control unit 290 is high, It can be difficult to access. Therefore, it is preferable that the control unit 290 is installed in the air blowing unit 200.

If the control unit 290 is arranged so as to face the blowing unit 210, the vibration due to the operation of the blowing unit 210 may be directly transmitted to the control unit 290 to lower the stability of the control unit 290 have.

Therefore, the control unit 290 can be positioned between the mixing unit 100 and the blowing mechanism 210. [ The control unit 290 may be located between the heat exchanger 110 and the blower mechanism 210. The control unit 290 may be positioned between the blower mechanism 210 and the blowout unit 300. [

3 is a view showing the inside of an air conditioning unit according to an embodiment of the present invention.

Referring to FIG. 3, the mixing unit 100, the blowing unit 200, and the blowout unit 300 can communicate with each other.

A heat exchanger 111 may be disposed inside the main body 10. An indoor air filter (112) may be installed in the indoor air suction unit (110).

As described above, the circulating air RA can be introduced into the indoor air suction unit 110. [ Since the circulating air RA is circulated air in the room 50, the circulating air RA can be hot air whose temperature has risen due to human body temperature or the like in the room 50. Therefore, the heat exchanger 111 can heat-exchange the air introduced into the main body 10 through the indoor air intake unit 110.

The cold water circulation flow path (114) may be connected to the heat exchanger (111). In more detail, the inlet channel 115 and the outlet channel 116 may be connected to the heat exchanger 111.

The cold water supplied by the chiller unit 5 (see FIG. 11) to be described later can be introduced into the heat exchanger 111 through the intake passage 115. The cold water flowing into the heat exchanger 111 can heat-exchange the circulating air RA sucked through the indoor air suction unit 110 to cool the circulating air RA. The cold water exchanged with the circulating air (RA) in the heat exchanger (111) can flow into the outflow channel (116).

A cooling water valve 62 (see FIG. 11) may be installed in the intake flow path 115. The control unit 90 may control the flow rate of the cold water flowing into the heat exchanger 111 through the inlet flow path 115 by adjusting the opening degree of the cooling water valve 62. When the flow rate of the cold water flowing into the heat exchanger 111 is increased, the temperature of the supply air SA is lowered, and when the flow rate of the cold water flowing into the heat exchanger 111 is decreased, the temperature of the supply air SA can be increased.

The heat exchanger 111 may be arranged to face the indoor air intake part 110. The heat exchanger 111 may be disposed closer to the indoor air intake unit 110 than the ambient air intake unit 120 and the bypass unit 130. [

The heat exchanger 111 may be installed to be connected to the indoor air suction unit 110. In more detail, the heat exchanger 111 and the indoor air intake part 110 may be disposed in contact with each other.

A drain pan 113 may be provided below the heat exchanger 111. Since the surface temperature of the heat exchanger 111 is lower than that of the surrounding air, water can be formed on the surface of the heat exchanger 111 due to the condensation phenomenon, and the water can flow down the heat exchanger 111 . The drain pan 113 may serve to receive water flowing down from the heat exchanger 111.

A drain channel (not shown) is connected to the drain pan 113 so that water that has fallen to the drain pan 113 can be drained.

The indoor air filter 112 may include a pre-filter and / or a medium filter.

The circulating air RA is circulated air in the room 50, so it may be air that passes through the room 50 and is contaminated. The indoor air filter 112 can purify the circulating air RA flowing through the indoor air suction unit 110. [

The indoor air filter 112 may be installed outside the indoor air intake unit 110, but is not limited thereto.

The heat exchanger 111 may be disposed after the indoor air filter 112 along the flow direction of the circulating air RA. Accordingly, the circulated air RA purified by the indoor air filter 112 can be introduced into the indoor air intake unit 110, and the circulated air RA passes through the heat exchanger 111 and can be cooled down . That is, the circulating air RA introduced into the main body 10 through the indoor air suction unit 110 may be purified low-temperature air.

Meanwhile, the bypass unit 130 may be provided with a bypass damper 131. The bypass unit 130 may include a bypass filter 132.

The indoor air can be introduced into the bypass unit 130 by bypassing the indoor air intake unit 110. [ More specifically, the bypass unit 130 may bypass the heat exchanger 111 to introduce the circulated air RA into the main body 10. That is, the circulating air RA warmed in the room 50 can be introduced into the mixing unit 100 without being cooled in the heat exchanger 111.

When the temperature of the circulating air RA is sufficiently low, a part of the circulating air RA flows into the main body 10 through the bypass unit 130, so that energy required for heat exchange can be reduced. That is, the energy required for heat exchange can be advantageously reduced.

In order to prevent the circulating air RA flowing into the bypass unit 130 from being exchanged with the heat exchanger 111 on the indoor air intake unit 110 side, the bypass unit 130 and the indoor air intake unit 110 Can be arranged as far as possible from each other. For example, when the indoor air intake part 110 is located on one side of the main body 10, the bypass part 130 is positioned on the other side of the main body 10 facing the one side, can do. That is, the bypass unit 130 and the indoor air intake unit 110 may be disposed to face each other.

The bypass damper 131 may be provided to the bypass unit 130. The bypass damper 131 may regulate the opening degree to adjust the flow rate of the circulating air RA flowing through the bypass unit 130. [

It is preferable that the circulating air RA flowing into the bypass unit 130 constitutes 50% of the supply air SA taken out to the air outlet 310 when the bypass damper 131 is completely opened.

The bypass filter 132 may be provided to the bypass unit 130. The bypass filter 132 can purify the circulating air RA flowing through the bypass unit 130.

The bypass filter 132 may include a pre-filter and / or a medium filter.

The bypass filter 132 may be installed outside the bypass unit 130, but is not limited thereto.

The bypass damper 131 may be disposed after the bypass filter 132 along the flow direction of the circulating air RA. Accordingly, the circulating air RA purified by the bypass filter 132 can be introduced into the bypass unit 130, and the bypass damper 131 can be introduced into the main body 10 through the bypass unit 130 The flow rate of the circulating air RA to be introduced can be adjusted. Therefore, the circulating air RA introduced into the main body 10 through the bypass unit 110 may be purified air at room temperature.

The outside air suction unit 120 may be provided with an outside air damper 121. The outside air damper 120 can regulate the opening degree to adjust the flow rate of the outside air OA flowing through the outside air suction portion 120.

When the outside air damper 121 is completely opened, the outside air OA flowing into the outside air suction portion 120 preferably constitutes 10% of the air supply portion SA taken out to the air outlet 310.

On the other hand, a control unit 290 may be installed on the outer surface of the main body 10. The control unit 290 may be installed on one side of the main body 10. The control unit 290 may be positioned between the heat exchanger 111 and the blower mechanism 210.

An auxiliary panel 270 disposed to face the control unit 290 may be disposed inside the main body 10 in order to facilitate the flow of the air flowing through the air blowing mechanism 210 and to reduce the noise.

The blowing mechanism 210 may include a blowing fan 211 and a motor 212.

The blowing fan 211 may be an axial flow fan. The blowing fan 211 can blow the air mixed in the mixing unit 100 to the blowout unit 300.

The motor 212 may be located below the blowing fan. The motor can rotate the blower fan. The motor 212 may be controlled by the control unit 90. The controller 90 controls the operation frequency (rpm) of the motor 212 to adjust the air volume and pressure of the air supply SA to be taken out to the air outlet 310.

A blowing unit base 220 may be provided in the main body 10. The blowing mechanism 210 can be supported by the blowing unit base 220. The blowing unit base 220 may be a blower supporter.

Since the air blown by the blowing mechanism 210 must flow to the blowout unit 300, the blowing unit base 220 may include a plurality of blowing units. For example, the blowing unit base 220 may be a base frame formed by intersecting a plurality of bars and formed into a lattice shape.

An air guide 320 may be installed on the inner bottom surface of the main body 10.

The air guide 320 may be installed on the bottom surface of the take-out unit 300 and protrude toward the take-out unit 300. At this time, the degree of protrusion can be reduced from the central portion to the edge portion of the air guide 320. That is, the distance between the upper surface of the air guy 320 and the bottom surface of the main body 10 can be reduced from the central portion toward the peripheral portion.

The air that has flown to the blowout unit 300 by the blowing mechanism 210 can be guided along the upper surface of the air guide 320 and can be taken out to the blowout opening 310. [ Therefore, the flow resistance of the supply air SA blown out from the blowout unit 300 to the blowout opening 310 can be reduced, and noise generated during blowout can be reduced.

On the other hand, the mixing unit 100, the blowing unit 200, and the blowout unit 300 can be modularized, respectively. In this case, diversity can be provided to the configuration of the air conditioning unit 1 through the addition and removal of the units 100, 200, and 300, This is possible. In addition, the completed units 100, 200, and 300 can be transported in a separated state to the place where the air conditioning unit 1 is installed, and the assembling process of each unit 100, 200, and 300 can be performed very quickly and easily .

The mixing unit 100, the air blowing unit 200, and the blowout unit 300 may be detachably coupled to each other. At this time, the air conditioning unit 1 is disposed in the air blowing unit 200 and the blowout unit 300 between the mixing unit 100 and the blowing unit 200, and a sealing member (not shown) As shown in FIG.

The mixing unit 100 and the blowing unit 200 can communicate with each other and the blowing unit 200 and the blowing unit 300 can communicate with each other.

It is needless to say that the mixing unit 100, the blowing unit 200, and the blowout unit 300 can be formed integrally without being detachable from each other.

Hereinafter, the configuration and operation of each unit will be described in detail.

Fig. 4 is a perspective view showing the mixing unit, and Fig. 5 is an exploded perspective view of the mixing unit.

The mixing unit 100 may mean the upper part of the air conditioning unit 1. [ The mixing unit 100 may be disposed on the upper side of the air blowing unit 200 and may communicate with the air blowing unit 200.

Referring to Figs. 4 and 5, the mixing unit 100 may have a substantially rectangular parallelepiped shape.

The mixing unit 100 may be located above the blowing unit 200. [ The mixing unit 100 can communicate with the blowing unit 200. [

The mixing unit 100 may include at least one of a mixing unit frame 150, an indoor air intake unit 110, an external air intake unit 120, a bypass unit 130, and a mixing unit check door 140 . The mixing unit 100 may include a heat exchanger 111 and a drain pan 113.

The mixing unit frame 150 may be formed by combining a plurality of bars. The mixing unit frame 150 may be made of a metal.

The indoor air intake unit 110, the ambient air intake unit 120, and the bypass unit 130 are preferably disposed on different surfaces of the mixing unit 100, but are not limited thereto.

The indoor air suction unit 110, the external air suction unit 120, and the bypass unit 130 may be spaced apart from each other.

Since the air introduced into the bypass unit 130 is not heat-exchanged with the heat exchanger 111 on the indoor air intake unit 110 side, the distance between the bypass unit 130 and the indoor air intake unit 110 is maximized . Therefore, the bypass unit 130 and the indoor air intake unit 110 can be disposed to face each other. More specifically, the bypass unit 130 may be disposed on one side of the mixing unit 100, and the indoor air intake unit 110 may be disposed on the other side facing the one side.

The indoor air intake unit 110 may include a first panel 118 on which an indoor air intake port 119 is formed. The indoor air intake part 110 may further include a first fixing part 117.

The first panel 118 may be fastened to the mixing unit frame 150. An indoor air inlet 119 may be formed in the first panel 118. The circulating air RA can be introduced into the mixing unit 100 through the indoor air inlet 119.

The first fixing part 117 may be fastened to the front surface of the first panel 118. The front surface may be a surface facing the outer surface of the mixing unit 100. The first panel 118 and the first fixing part 117 may be integrally formed. The first fixing part 117 may be a bracket assembly to which a plurality of brackets are coupled.

An indoor air filter 112 may be installed in the first fixing part 117. The circulated air RA purified by the indoor air filter 112 may be introduced into the mixing unit 100 through the room air inlet 119 of the first panel 118. [

The heat exchanger 111 may be disposed inside the mixing unit 100. Also, a drain pan 113 may be disposed inside the mixing unit 100. In more detail, a heat exchanger 111 and a drain pan 113 may be disposed inside the mixing unit frame 150.

The heat exchanger 111 may be arranged to face the indoor air intake part 110. Preferably, the heat exchanger 111 may be provided on the back surface of the first panel 118. The back surface may be a surface that faces the inner surface of the mixing unit 100. That is, the heat exchanger 111 can be in contact with the first panel 119.

The size of the heat exchanger 111 may be larger than the size of the room air inlet 119. Thus, the entire circulating air (RA) introduced through the indoor air intake port (119) passes through the heat exchanger (111) and can be heat-exchanged.

The drain pan 113 may be located below the heat exchanger 111. As described above, the drain pan 113 is formed on the surface of the heat exchanger and can receive water falling down.

On the other hand, an outside air inlet 122 may be formed in the outside air inlet portion 120. The outside air OA can be introduced into the mixing unit 100 through the outside air intake port 122. [

The outside air suction part 120 can be fastened to the mixing unit frame 150.

The outside air suction unit 120 may be provided with an outside air damper 121. More specifically, the outside air damper 121 may be installed at the outside air inlet 122. The outside air damper 121 adjusts the opening degree to adjust the flow rate of the outside air flowing into the mixing unit 100 through the outside air intake port 122.

The outside air suction unit 120 may be connected to an outside air flow path 123 (see FIG. 11) to be described later. Alternatively, the outside air damper 121 may be connected to the outside air flow path 123. The outside air OA flowing into the outside air flow path 123 may flow into the mixing unit 100 through the outside air damper 121 and the outside air intake opening 122. [

Meanwhile, the bypass unit 130 may include a second panel 134 on which the bypass suction port 133 is formed. The bypass unit 130 may further include a second fixing unit 135.

The second panel 134 may be fastened to the mixing unit frame 150. A bypass inlet 133 may be formed in the second panel 134. The circulating air RA can be introduced into the mixing unit 100 through the bypass inlet 133. [

The second fixing part 135 may be fastened to the front surface of the second panel 134. The front surface may be a surface facing the outer surface of the mixing unit 100. The second panel 134 and the second fixing part 135 may be integrally formed. The second fixing part 135 may be a bracket assembly to which a plurality of brackets are coupled.

The second fixing part 135 may be provided with a bypass filter 132. The circulated air RA purified by the bypass filter 132 may be introduced into the mixing unit 100 through the bypass suction port 133 of the second panel 134.

The bypass unit 130 may be provided with a bypass damper 131. More specifically, the bypass damper 131 may be installed in the bypass suction port 133. [ The bypass damper 131 adjusts the opening degree to adjust the flow rate of the outside air flowing into the mixing unit 100 through the bypass inlet 133.

The second fixing part 135 can be fastened to the bypass damper 131 provided on the second panel 134 without the second panel 134 and the second fixing part 135 being directly fastened.

The circulating air RA that has passed through the bypass damper 131 may be introduced into the mixing unit 100 through the bypass suction port 133. [

On the other hand, the mixing unit check door 140 can be coupled to the mixing unit frame 150 to open and close the mixing unit 100. The user can open the mixing unit check door 140 to maintain the mixing unit 100. [

The mixing unit 100 may further include at least one first casing panel 160. The first casing panel 160 can be fastened to the mixing unit frame 150.

When there are a plurality of the first casing panels 160, the sizes and shapes of the first casing panels 160 may be different from each other.

The first casing panel 160 includes a first casing panel 160 and a second casing panel 160. The first casing panel 160 includes a first casing panel 160 and a second casing panel 160. The first casing panel 160 includes a first casing panel 160, As shown in Fig.

However, the first casing panel 160 may not be fastened to the lower portion of the mixing unit frame 150 to allow the mixing unit 100 and the air blowing unit 200 to communicate with each other.

It is preferable that the indoor air intake part 110, the outside air suction part 120, the bypass part 130, and the mixing unit check door 140 are fastened to the periphery of the mixing unit frame.

Hereinafter, the operation of the mixing unit 100 will be described.

The mixing unit 100 can mix the circulating air RA flowing into the indoor air suction unit 110 and the bypass unit 130 and the outside air OA flowing into the outside air suction unit 120.

A part of the circulating air RA may be introduced through the indoor air intake part 110. [ The circulating air RA flowing into the indoor air suction unit 110 can be purified in the indoor air filter 112 and heat-exchanged with the heat exchanger 111 to be introduced into the mixing unit 100. That is, the air introduced into the mixing unit 100 through the indoor air intake unit 110 may be purified air having a high carbon dioxide concentration and a low temperature.

Another portion of the circulating air RA may be introduced by bypassing the heat exchanger 111 via the bypass unit 130. [ The circulating air RA flowing into the bypass unit 130 may be purified by the bypass filter 132 and may be introduced into the mixing unit 100 through the bypass damper 131. The air introduced into the mixing unit 100 through the bypass unit 130 is not heat-exchanged in the heat exchanger 111. Therefore, the air introduced into the mixing unit 100 through the bypass unit 130 has a high carbon dioxide concentration , And purified air at room temperature.

The outside air OA may be introduced through the outside air suction portion 120. [ The outside air OA flowing into the outside air suction unit 120 may flow into the mixing unit 100 through the outside air damper 121. [ That is, the air introduced into the mixing unit 100 through the outside air suction unit 120 may be air having a low carbon dioxide concentration.

The air introduced into the indoor air intake unit 110, the ambient air intake unit 120 and the bypass unit 130 may be mixed in the mixing unit 100. The air mixed in the mixed pressure unit 100 may constitute an air supply unit (SA) to be taken out to the air outlet (310).

The amount of air introduced into the indoor air intake unit 110 may be constant. The temperature of the air sucked into the indoor air suction unit 110 may vary depending on the flow rate of the cold water flowing into the heat exchanger 111. [ That is, the control unit 90 includes a cooling water valve 62 connected to the cold water circulating passage 114 connected to the heat exchanger 111, a chiller unit 5 for supplying cold water through the cold water circulating passage 114 To control the temperature of the air flowing into the indoor air intake unit 110. [0054] As more cold water flows into the heat exchanger 111, heat exchange between the air flowing into the indoor air suction unit 110 and the cold water of the heat exchanger 111 can be activated, The temperature of the air can be lowered. As a result, the temperature of the supply air (SA) can be lowered.

The amount of air flowing into the outside air suction unit 120 may vary depending on the opening degree of the outside air damper 121. The temperature of the outside air OA may be higher or lower than the circulating air RA. The control unit 90 can control the amount of air flowing into the outside air suction unit 120 by adjusting the opening degree of the outside air damper 121. [ The more the outside air OA flows into the outside air suction unit 120, the lower the carbon dioxide concentration of the air supply unit SA.

The amount of air flowing into the bypass unit 130 may vary depending on the opening degree of the bypass damper 131. The control unit 90 may control the amount of air flowing into the bypass unit 130 by adjusting the opening degree of the bypass damper 131. As more indoor air flows into the bypass unit 130, the temperature of the air supply unit SA can be increased. That is, the temperature of the supply air SA can be close to the temperature of the circulating air RA.

Therefore, if the temperature of the circulating air RA is sufficiently low, the amount of the air introduced into the bypass unit 130 is increased without performing heat exchange at the indoor air intake unit 110, Can be supplied. That is, by providing the bypass unit 130 in the mixing unit 100, it is possible to optimally control the temperature of the supply air (SA) and to save energy required for heat exchange.

Fig. 6 is a perspective view showing the air blowing unit, Fig. 7 is an exploded perspective view of the air blowing unit, and Fig. 8 is an exploded perspective view of the control unit.

6 to 8, the blowing unit 200 may have a substantially rectangular parallelepiped shape.

The blowing unit 200 can be positioned between the mixing unit 100 and the blowout unit 300. The air blowing unit 200 may be located on the lower side of the mixing unit 100 and on the upper side of the blowout unit 300. The blowing unit 200 can communicate with the mixing unit 100 and the blowout unit 300, respectively.

The air blowing unit 200 may include at least one of the air blowing unit frame 250, the air blowing unit base 220, the air blowing unit checking door 230, and the guide member 240. The blowing unit 200 may include a blower opening 210.

The air blowing unit frame 250 may be formed by combining a plurality of bars. The air blowing unit frame 250 may be made of a metal. The air blowing unit frame 250 may include an upper frame 251 and a lower frame 252.

A control unit 290 may be installed in the upper frame 251. More specifically, a control unit 290 may be provided on the side of the upper frame 251.

A blowing mechanism 210 may be disposed inside the lower frame 252.

Further, the lower frame 252 may be provided with a guide member 240. In more detail, a guide member 240 may be installed on the upper portion of the lower frame 252. It is also possible that the guide member 240 is installed below the upper frame 251.

The lower frame 252 may be provided with a blowing unit check door 230. More specifically, a blowing unit check door 230 may be provided on the side of the lower frame 252. In addition, a ventilation unit base 220 may be installed in the lower frame 252. More specifically, a blowing unit base 220 may be installed below the lower frame 252.

The air blowing unit base 220 can be positioned below the air blowing unit 200. The air blowing unit base 220 can be installed below the air blowing unit frame 250.

The blowing unit base (220) can support the blowing mechanism (210). The blowing unit base 220 may have at least one passage through which the air passes. For example, when the air-blowing unit base 220 is a lattice-shaped base frame, the space between the gratings may be a cylinder.

The air blowing unit check door 230 may be provided on the side of the air blowing unit frame 250. The blowing unit check door 230 can open / close the blowing unit 200. The manager or the user can open the air blowing unit check door 230 to approach the interior of the air blowing unit 200 and remove the air blowing mechanism 210 from the air blowing unit 200. [

The guide member 240 may be installed in the air blowing unit frame 250. The guide member 240 may serve to guide the air mixed in the mixing unit 100 to the blowing mechanism 210. The guide member 240 may be positioned above the blower mechanism 210. The guide member 240 can be positioned between the mixing unit 100 and the blowing mechanism 210. [

The blowing unit 200 may further include at least one second casing panel 260. The second casing panel 260 can be fastened to the air blowing unit frame 250.

When there are a plurality of the second casing panels 260, the sizes and shapes of the second casing panels 260 may be different from each other.

The second casing panel 260 can be fastened to the portion of the blowing unit frame 250 excluding the portion where the blowing unit check door 140 is fastened.

However, the second casing panel 260 may not be fastened to the upper portion of the ventilation unit frame 250 to allow the mixing unit 100 and the ventilation unit 200 to communicate with each other. The second casing panel 260 may not be fastened to the lower portion of the air blowing unit frame 250 in order for the blowing unit 200 and the blowout unit 300 to communicate with each other.

The blowing mechanism 210 may be located inside the blowing unit 200. More specifically, the blower opening 210 may be located inside the blower unit frame 250.

The blowing mechanism 210 can blow the mixed air in the mixing unit 100 to the blowout unit 300. That is, the air blowing mechanism 210 can cause the air on the upper side to flow downward.

As described above, the blowing mechanism 210 may include a blowing fan 211 and a motor 212. The blower mechanism 210 may be modularized and detachably fastened to the blower unit 200.

The blowing mechanism 210 can be supported by the blowing unit base 220. The upper end of the blower mechanism 210 can be in contact with the guide member 240. Thus, the air mixed in the mixing unit 100 can be guided to the blowing mechanism 210 along the upper surface of the guide member 240.

The blowing fan 211 that rotates by the driving of the motor 212 can form a descending airflow that flows from the mixing unit 100 to the blowout unit 300 via the blowing unit 200. [

The air sucked into the blowing mechanism 210 can be blown by the blowing fan 211 and passed through the passage formed in the blowing mechanism base 220 and can be taken out to the blowout opening 310 formed in the blowout unit 300. That is, the blowing mechanism 210 can cause air to flow through the mixing unit 100, the blowing unit 200, and the blowout unit 300 in order.

The control unit 290 may be installed in the air blowing unit 200. More specifically, the control unit 290 can be installed in the air blowing unit frame 250.

The control unit may include a control unit door 291, a controller 295, and a casing 293. [

The casing 293 may be in the form of a box whose one side is open. A heat insulating material (not shown) may be provided on the back surface of the casing 293

A control unit door 291 may be provided on the open side of the casing 293. The control unit door 291 can open and close the control unit 290. [ The user or the administrator can open the control unit door 291 and directly control the controller 295. [

A controller 295 may be provided inside the casing 293. The controller 295 can control the bypass damper 131, the outside air damper 121, the cooling water valve 62, the motor 212, and the like. The controller 295 may include an inverter drive, an interface, a communication unit, and the like. The inverter drive can control the operating frequency of the motor of the blower. The user can enter commands into the controller via the interface. The communication unit can communicate with a building management system (BMS) of a building in which the air conditioning unit 1 is installed. Therefore, central control and monitoring through communication can be possible.

The control unit 290 may be installed on the outer surface of the air blowing unit 200. Thereby, the user can easily access the control unit 290 to control the air conditioning unit 1, and the control convenience can be increased.

When the control unit 290 is installed in the lower frame 252 in which the blowing mechanism 210 is disposed, the vibration due to the operation of the blowing mechanism 210 is directly transmitted to the control unit 290, ) May be lowered. Therefore, the control unit 290 can be installed in the upper frame 251. [

Hereinafter, the operation of the air blowing unit 200 will be described.

The air mixed in the mixing unit 100 can be introduced into the air blowing unit 200 communicating with the mixing unit 100. More specifically, the blowing mechanism 210 can suck the mixed air in the mixing unit 100 into the blowing unit 200.

The air sucked into the air blowing unit 200 flows downward and can pass through the back surface of the control unit 290. [

The air sucked from the upper side of the air blowing unit 210 can be sucked into the air blowing mechanism 210 along the upper surface of the guide member 240. The air sucked into the blowing mechanism 210 can be discharged to the side and / or the lower portion of the blowing mechanism 210 by the blowing fan 211. The air discharged from the blowing mechanism 210 can flow downward.

 Even if a part of the air discharged from the blower mechanism 210 flows upward, it may be reflected by the lower surface of the guide member 240 and flow downward again.

The air discharged in the downward direction from the blowing mechanism 210 can be flowed to the blowout unit 300 through the blowing unit base 220. [ More specifically, the air discharged in the downward direction from the blowing unit 210 can be flowed to the blowout unit 300 through the passage formed in the blowing unit base 220.

Fig. 9 is a perspective view showing the takeout unit, and Fig. 10 is an exploded perspective view of the takeout unit.

9 and 10, the take-out unit 300 may have a substantially rectangular parallelepiped shape. The height of the blowout unit 300 may be lower than the height of the mixing unit 100 or the blowing unit 200. [

The blowout unit 300 can be positioned below the blowing unit 200. [ The blowout unit 300 can communicate with the blowing unit 200.

The take-out unit 300 may include at least one of the takeout unit frame 300, the third casing panel 360, and the fixed door 330. At least one blowout opening 310 may be formed in the blowout unit 300. The blowout unit 300 may be provided with an air guide 320.

The takeout unit frame 360 may be formed by combining a plurality of bars. The takeout unit frame 360 may be made of a metal.

It is preferable that the air outlet 310 is formed on at least a part of the peripheral surface of the takeout unit 300. For example, the left side surface and the right side surface of the take-out unit 300 can be opened. At this time, the opened left and right sides may be the outlet 310.

The third casing panel 360 may be installed at the lower end of the takeout unit frame 350. In order to communicate with the blowing unit 200, the third casing panel 360 may not be installed at the upper end of the blowout unit frame 350.

The air guide 320 may be installed on the inner bottom surface of the take-out unit 300. The air guide 320 may protrude inward of the take-out unit 300. The distance between the upper surface of the air guide 320 and the bottom surface of the take-out unit 300 may become closer to the edge from the center of the air guide 320.

The air guide 320 can guide the air that has flowed from the air blowing unit 200 to the blowout unit 300 to the blowout opening 310. The air guide 320 can smooth the flow of the air supply SA taken out through the air outlet 310 and reduce the noise generated by the air flow in the air blowing out unit 300. [

The securing door 330 may be detachably installed at the side end of the takeout unit frame 350. The position of the dispensing opening in the dispensing unit can be determined according to the installation position of the fixing door 330. [ For example, when the fixing door 330 is provided at the front end and the rear end of the takeout unit frame 350, the left end and the right end of the takeout unit frame 350 can form a takeout port.

A portion of the blowout unit 300 where the fixing door 330 is not provided in the blowout unit frame 350 may be the blowout opening 310. Therefore, the user can change the position of the outlet 310 by installing or removing the fixing door 330.

The operation of the blowout unit 300 will be described. The air blown from the air blowing unit 200 to the blowout unit 300 by the blowing mechanism 210 can be taken out to the blowout opening 310 along the upper surface of the air guide 320. [ At this time, air taken out to the air outlet 310 may mean air supply (SA).

FIG. 11 is a simplified view of an air conditioning unit according to another embodiment of the present invention, and FIG. 12 is a perspective view showing a blowout unit of an air conditioning unit according to another embodiment of the present invention.

Hereinafter, the same contents as those described above will be omitted and differences will be mainly described.

11 and 12, the air conditioning unit 10 according to the present embodiment includes a plurality of blowing units 200, and a plurality of blowing units 300 (corresponding to the plurality of blowing units 200) ). ≪ / RTI > For example, two blowing units 200 and two blowing units 100 may be provided.

The size of the mixing unit 100 may be larger than when a single blowing unit 200 is provided.

The plurality of blowing units 200 may be arranged side by side. More specifically, the upper sides of the plurality of air blowing units 200 may be connected to the lower side of the mixing unit 100 and arranged side by side.

The plurality of blowing units 200 are preferably not connected to each other, but are not limited thereto.

The mixing unit 100 may be disposed horizontally on the upper side of the plurality of blowing units 200. The mixing unit 100 can communicate with each of the plurality of blowing units 200. [

A plurality of blowout units (300) can be coupled to each blowing unit (200). More specifically, the plurality of blowout units 300 may be arranged below the respective blowing units 200 and arranged side by side.

A plurality of blowout units (300) can communicate with each blowing unit (200).

A barrier panel may be provided between the two extraction units 300 that are in contact with each other among the plurality of extraction units 300. More specifically, among the plurality of take-out units 300, the take-out unit contacting the one take-out unit may be provided with a barrier panel on the face facing the one take-out unit. At this time, the barrier panel may refer to the fixed door 330.

If the fixing door 330 is not provided between the two take-out units 300, the two take-out units 300 can communicate with each other. In this case, there is a fear that the air blown from one blowing unit 200 connected to the one blowing out unit 300 and the air blown from the other blowing unit 200 connected to the other blowing out unit 300 act as flow resistance of each other have. That is, it is preferable that the two extraction units 300 that are in contact with each other are partitioned without being in communication with each other.

For example, when the air conditioning unit 1 includes two blowout units 300, the left side of the one blowout unit 300 and the right side of the other takeout unit 300 may be in contact with and connected to each other. At this time, the fixing door 300 may be provided on at least one of the left side of the takeout unit frame 350 of the take-out unit 300 and the right side of the takeout unit frame 350 of the take-out unit 300.

According to the present embodiment, by including the plurality of blowing units 200, there is an advantage that the air conditioning load that the air conditioning unit 1 can afford can be further increased. In addition, since the conventional air blowing unit 200 is coupled without separately manufacturing the air blowing units of different sizes, the manufacturing cost of the air conditioning unit 1 can be reduced and the manufacturing process can be simplified.

13 is a configuration diagram illustrating an example of an air conditioning system including an air conditioning unit according to an embodiment of the present invention.

Referring to Fig. 13, the air conditioning system may include an air conditioning unit 1. Fig. The air conditioning system may further include a ventilation unit 3 and / or a chiller unit 5.

Hereinafter, detailed configuration and operation of the air conditioning unit 1 are the same as those described above, and a description thereof will be omitted.

The air conditioning unit (1) can be disposed in the air conditioning room (20). More specifically, the mixing unit 100 and the air blowing unit 200 of the air conditioning unit 1 can be located on the floor of the air conditioning room 24, and the blowout unit 300 is located below the floor of the air conditioning room 24 can do.

The air conditioning system may include a floor duct (59). At least a portion of the floor duct 59 may be located under the indoor floor 55 of the room 50.

In more detail, the floor duct 59 includes an air conditioning room floor duct 21 located below the air conditioning room floor 24 of the air conditioning room 20, an air conditioning room floor duct 21 located below the indoor floor 55 of the room 50, And may include a duct 51.

An air conditioning room floor duct (21) can be located under the floor of the air conditioning room (24). The blowout unit 300 can be located inside the air conditioning room floor duct 21. [ It is also possible that the space under the floor of the air conditioning room 24 itself serves as the air conditioning floor duct 21.

The air conditioning room 20 may be provided with a heating heater 77. The heating heater 77 can raise the temperature of the air conditioning chamber 20. [ In more detail, the heating heater 77 can raise the temperature of the circulating air RA in the air conditioning chamber 20.

The room 50 can be distinguished from the air conditioning room 20. The room 50 may be a space where people are active. The room 50 may mean a space between the indoor floor 55 and the indoor ceiling 56.

The air conditioning room floor duct 21 can communicate with the indoor floor duct 51 located under the indoor floor surface 55. [ More specifically, the air conditioning room floor duct 21 can communicate the air outlet unit 310 of the air conditioning unit 1 and the indoor floor duct 51 with each other.

It is also possible that the space under the indoor floor 55 serves as the indoor floor duct 51 itself.

The indoor floor 55 may include a plurality of outlet bodies 52 having air discharge holes. The indoor ceiling 56 may be provided with a plurality of inlet bodies 54 having air suction holes. The outlet body and the inlet body may be diffusers.

The outlet body 52 can communicate with the floor 50 and the floor duct 59. The inlet body 54 can communicate with the indoor duct 53 and the room 50.

The conditioning duct (53) disposed on the indoor ceiling (56) can communicate with the air conditioning room (20).

The supply air SA taken out to the air conditioning room floor duct 21 at the air outlet 310 of the air conditioning unit 1 can be flowed to the indoor floor duct 51. The supply air (SA) can be introduced into the indoor space (50) through the air discharge hole formed in the outlet body (52) to the indoor floor duct (51).

The temperature and carbon dioxide concentration of the air supply unit (SA) flowing into the indoor unit (50) may be increased due to body temperature or respiration of the people in the room (50). Accordingly, the temperature of the air flowing into the indoor space 50 may gradually increase, and the air whose temperature has risen may rise inside the room 50 and may be introduced into the air suction holes formed in the inlet body 54. The air that has flowed through the air suction holes into the sailing duct 53 may be circulated air (RA) circulated in the room (50).

The circulating air (RA) that has flowed into the selction duct (53) can flow into the air conditioning chamber (20). A part of the circulating air RA flowing into the air conditioning room 20 flows into an exhaust flow path 22 to be described later and the other part flows into the mixing unit 100 through the indoor air intake part 110, May be introduced into the mixing unit (100) through the bypass unit (130).

Since the air supply SA flows into the room 50 through the floor duct 59, the air conditioning system according to this example is a floor air conditioning system, in which case the air conditioning unit can be a floor air conditioner. Such a floor air conditioning system has an advantage that it can reduce floor space compared to a ceiling air conditioning system in which air is supplied from the ceiling of a room. Here, the height may mean the height of the space above the ceiling scene 56.

It is preferable that the temperature of the supply air SA taken out from the air outlet 310 of the air conditioning unit 1 is about 18 DEG C in the floor air conditioning system. This is advantageous in that the same air conditioning effect can be obtained by using less energy because it is higher than the supply air temperature of 14 DEG C in a general ceiling air conditioning system.

On the other hand, the ventilation unit 3 may be installed in the sub-air conditioning room 30 which is separated from the air conditioning room 20. [ It is also possible that the ventilation unit 3 is installed outdoors.

The ventilation unit 3 may be connected to the air conditioning unit 1 and the outside air flow path 123 and may be connected to the air conditioning room 20 and the exhaust flow path 22. [

The outdoor air flow path 123 may be connected to the outdoor air suction unit 120 of the air conditioning unit 1. [ Or the outside air flow path 123 may be connected to the outside air damper 121 installed in the outside air suction part 110. The outside air flow path 123 can communicate the ventilation unit 3 and the air conditioning unit 1.

The exhaust passage 22 can communicate the ventilation unit 3 with the air conditioning chamber 20. The air flowing outside the air conditioning chamber 20 through the exhaust passage may mean exhaust air (EA).

An exhaust damper 23 may be installed in the exhaust flow path 22. The exhaust damper 23 can be disposed in the air conditioning chamber 20. The exhaust damper 23 can adjust the amount of air flowing into the exhaust passage 22 by adjusting the opening degree.

The ventilation unit 3 may include an exhaust part 31 and an outer base part 32. [

The outer base portion 32 and the exhaust portion 31 can be partitioned into a barrier 33. That is, the barrier 33 may be positioned between the outer base portion 32 and the exhaust portion 31.

The barrier 33 may be provided with an opening 34. The opening portion 34 may include an opening hole for communicating the outer base portion 32 and the exhaust portion 31. [ A mixing damper 35 may be installed in the opening 34. The mixing damper 35 can regulate the amount of air flowing from the exhaust part 31 to the outer part 32 through the opening part 34 by regulating the opening degree.

The exhaust passage (22) can be connected to the exhaust section (31). The exhaust portion 31 may be provided with an exhaust discharge portion 38. A sub-exhaust damper 39 may be provided in the exhaust emission section 38. The sub-exhaust damper 39 can adjust the amount of the exhaust EA flowing out to the exhaust discharge portion 38 by adjusting the opening degree.

The sub exhaust passage 40 may be connected to the exhaust exhaust portion 38 and the sub exhaust damper 39. The sub exhaust passage 40 can connect the exhaust part 31 to the outside. However, when the ventilation unit 3 is disposed outdoors, the sub-exhaust flow path 40 may be unnecessary.

An exhaust blowing mechanism (36) can be disposed inside the exhaust part (31). The exhaust blowing mechanism 36 can blow the air that has flowed into the exhaust portion 31 through the exhaust flow path 22 to the exhaust discharge portion 38 and /

The outer air flow path 123 may be connected to the outer base portion 32. The outer base portion 32 may be provided with an outside air introduction portion 41. The outside air introduction part 41 may be provided with a sub outside air damper 42. The sub open air damper 42 can regulate the amount of the outside air OA flowing into the outside air inlet portion 41 by adjusting the opening degree.

A sub outside air flow path 43 may be connected to the outside air introduction part 41 or the sub outside air damper 42. The sub outside air flow path 43 can connect the outside base portion 32 to the outside. However, if the ventilation unit 3 is disposed outdoors, the sub outside air flow path 43 may be unnecessary.

An outside air blowing mechanism (37) may be disposed inside the outer base (32). The outside air blowing mechanism 37 can blow the air that has flowed into the outer base portion 32 through the outside air introducing portion 41 and / or the opening portion 34 to flow to the outside air flow path 123.

The ventilation unit 3 may be provided with an outside air heat exchanger 47. More specifically, an outside-air heat exchanger 47 may be disposed inside the outer base portion 32.

The outside air heat exchanger 47 may be located between the outside air blowing mechanism 37 and the barrier 33. The outdoor heat exchanger 47 may be located between the outdoor air inlet 41 and the outdoor air blower 37. The connecting portion of the outside air flow passage 123 and the outer base portion 32 may be located on the opposite side of the outside air introducing portion 41 and the opening portion 34 with respect to the outside air heat exchanger 47.

The outdoor heat exchanger (47) may be connected to a cold water circulation channel (114). More specifically, the sub-circulation flow path 44 may be connected to the outside heat exchanger 47. [

The sub-circulation flow path 44 may include a sub-intake flow path 45 and a sub-take-out flow path 46. The sub-intake flow passage 45 can connect the intake flow passage 115 to the outside-air heat exchanger 47. The sub outlet water flow path 46 can connect the outflow path 116 and the outside air heat exchanger 47.

The sub-intake flow path 45 may be a branched flow path 115 and the sub outflow flow path 46 may be a flow path in which the outflow flow path 116 is branched.

The cold water flowing into the outside air heat exchanger 47 through the incoming air flow path 115 through the sub incoming flow path 45 passes through the outside air heat exchanger 47 and can exchange heat with the air inside the outside base portion 32. The cold water heat-exchanged with the air in the outdoor heat exchanger (47) can flow into the outflow channel (116) through the sub outlet channel (46).

Hereinafter, the operation of the ventilation unit 3 will be described.

The outside air OA, which is outside air, can be introduced into the outside air introducing portion 41. The outside air OA may be introduced into the outside air introduction portion 41 through the sub outside air flow path 43. At this time, the amount of the outside air OA flowing into the outside air inlet portion 41 may vary depending on the opening of the sub outside-air damper 42.

The outside air OA flowing into the outside air introducing portion 41 can flow into the inside of the outside base portion 32. [ The outside air OA flowing into the outside air introducing portion 41 can be mixed with the air flowing from the exhaust portion 31 to the outside portion 32 through the opening portion 34. [ That is, when the mixing damper 35 is opened, a part of the exhaust air EA may be mixed with the outside air OA flowing into the air conditioning unit 1 through the outside air flow path 123 from the inside of the outer base portion 32 .

The outside air blowing mechanism 37 can blow air that has flowed to the outer base portion 32 through the outside air introduction portion 41 and / or the opening portion 34. More specifically, the air that has flowed into the outer base portion 32 through the outside air introduction portion 41 and / or the opening portion 34 can be flowed by the outside air blowing mechanism 37. The air passes through the outside air heat exchanger 37 and is heat-exchanged with the cold water in the outside air heat exchanger 37 and then flows into the outside air sucking portion 121 of the air conditioning unit 100 through the outside air flow path 123 have.

Therefore, the outside air OA flowing into the mixing unit 100 through the outside air suction unit 120 may be low-temperature air. Further, as described above, the carbon dioxide concentration of the outside air (OA) may be relatively low.

On the other hand, the exhaust EA, which is part of the circulating air RA flowing from the carrying duct 53 to the air conditioning chamber 20, can be flowed to the exhaust part 31 of the ventilation unit 3 through the exhaust flow path 22 have. At this time, the exhaust damper 23 may be in the open state.

The exhaust EA flowing into the exhaust part 31 can be flowed to the opening part 34 and / or the exhaust discharge part 38 by the exhaust blowing mechanism 36. [

At this time, the amount of the exhaust EA taken out to the opening portion 34 and the exhaust discharge portion 38 may vary depending on the opening degree of the exhaust damper 39 and the mixing damper 35, respectively. For example, when the mixing damper 35 is closed and the exhaust damper 39 is open, the entire exhaust EA flowing into the exhaust portion 31 is exhausted to the exhaust discharge portion 38 Can flow. That is, it can be discharged to the outside through the sub-exhaust flow path 40.

On the other hand, the air conditioning system may include a chiller unit 5.

The chiller unit 5 may include a compressor through which the refrigerant is circulated, a condenser, an expansion mechanism, and an evaporator.

The refrigerant compressed in the compressor is condensed in the condenser, expanded in the expansion mechanism and evaporated in the evaporator. The refrigerant evaporates in the evaporator and can be heat-exchanged with cold water supplied to the cold water circulation passage (114). Therefore, the cold water is heat-exchanged with the refrigerant and can be further cooled.

The chiller unit 5 may be disposed in the machine room 60. The machine room 60 may be a basement. The machine room 60 can be distinguished from the room 50, the air conditioning room 20, and the sub air conditioning room 30. However, the mounting position of the chiller unit 5 is not limited to this, and the chiller unit 5 may be installed outside the room such as a roof.

The chiller unit 5 may serve to supply cold water to the heat exchanger 111 of the air conditioning unit 1 and / or the outdoor heat exchanger 47 of the ventilation unit 3. [ The cold water may be cooling water.

The chiller unit 5 may be connected to the heat exchanger 111 and the cold water circulation passage 114. More specifically, the cold water circulation passage 114 can connect the evaporator of the chiller unit 5 and the heat exchanger. The cold water circulating flow path 114 includes an inlet flow path 115 through which the cold water flows from the chiller unit 5 to the heat exchanger 111 and an outlet flow path 116 through which the cold water flows from the heat exchanger 111 to the chiller unit 5 ).

The circulation pump 61 may be installed in the cold water circulation channel 114. The circulation pump 61 may be installed in the inlet flow path 115 and / or the outlet flow path 116. The circulation pump (61) circulates the cold water along the cold water circulation flow path (114).

The sub-circulation flow path 44 can connect the cold water circulation passage 114 and the outdoor heat exchanger 47. The sub-circulation flow path 44 may include a sub-intake flow path 45 and a sub-take-out flow path 46.

The sub-intake flow passage 45 can connect the outside air heat exchanger 47 and the intake flow passage 115. Part of the cold water flowing from the chiller unit 5 to the inlet flow path 115 can be introduced into the outdoor heat exchanger 47 through the sub inlet flow path 45 while the remaining part flows into the heat exchanger 111 .

The sub outflow channel (46) can connect the outside air heat exchanger (47) and the outflow channel (116). Therefore, the cold water flowing from the outside air heat exchanger 47 to the sub outlet water passage 115 can be combined with the cold water flowing from the heat exchanger 111 to the outflow channel 116, and can flow to the chiller unit 5.

As described above, the air conditioning unit 1 is provided with a bypass unit, which can reduce unnecessary heat exchange energy. Therefore, the efficiency of the chiller unit 5 can be improved.

Also, in the floor air conditioning system, it is preferable that the temperature of the cold water supplied through the intake flow path 115 in the chiller unit 5 is 10 ° C. This is higher than the temperature of the cold water normally supplied in the ceiling air conditioning system, 7 ° C. Thus, the efficiency of the chiller unit 5 can be improved.

Hereinafter, each sensor included in the air conditioning system will be described.

The air conditioning system may include a temperature sensor 65. The temperature sensor 65 includes an intake temperature sensor 63, an outflow temperature sensor 64, an indoor temperature sensor 70, an air supply temperature sensor 71, a return temperature sensor 72, an outside air temperature sensor 78, A temperature sensor 79, and the like.

In addition, the air conditioning system may further include at least one of a carbon dioxide sensor 73, a static pressure sensor 76, The air conditioning system may further include additional sensors as needed.

The intake temperature sensor 63 may be installed in the intake flow path 115. The intake temperature sensor 63 can measure the temperature of the cold water flowing from the chiller unit 5 to the heat exchanger 111 through the intake flow path 115.

The outflow temperature sensor 64 can be installed in the outflow channel 116. The outflow temperature sensor 64 can measure the temperature of the cold water flowing from the heat exchanger 111 to the chiller unit 5 through the outflow channel 116.

The room temperature sensor 70 may be disposed in the room 50. [ The room temperature sensor 70 can measure the temperature of the air in the room 50. The air temperature of the room 50 may be higher than the temperature of the air supply SA and lower than the temperature of the circulating air RA.

The supply air temperature sensor 71 can measure the temperature of the supply air SA taken out from the air outlet 310.

The supply air temperature sensor 71 may be disposed in the floor duct 59. In more detail, the air supply temperature sensor 71 may be disposed in the air conditioning room floor duct 21. It is also possible that the supply air temperature sensor 71 is disposed in the blowout unit 300.

The return temperature sensor 72 can measure the temperature of the circulating air RA flowing into the receiving duct 53.

The return temperature sensor 72 may be disposed at an upper portion of the air conditioning chamber 20. More specifically, the return temperature sensor 72 may be installed adjacent to a portion communicating with the seating duct 53 at an upper portion of the air conditioning chamber 20. Or the return temperature sensor 72 may be disposed in the receiving duct 53.

The carbon dioxide sensor 73 can measure the carbon dioxide concentration of the circulating air RA. The concentration of carbon dioxide can mean the partial pressure of carbon dioxide.

The carbon dioxide sensor 73 may be disposed in the air conditioning room 20 or the room 50. In order to measure the carbon dioxide concentration of the circulating air RA, it is preferable that the carbon dioxide sensor 73 is installed in the air conditioning chamber 20.

The static pressure sensor 76 can measure the pressure in the floor duct 59. More specifically, the static pressure sensor 76 can measure the pressure in the indoor floor duct 51.

The static pressure sensor 76 may be disposed in the floor duct 59. More specifically, the static pressure sensor 76 may be disposed in the indoor floor duct 51.

The static pressure sensor 76 may include a first static pressure sensor 75 and a second static pressure sensor 74. The first static pressure sensor 75 may be disposed at an end of the floor duct 59 remote from the air outlet 310. The second static pressure sensor 74 may be disposed between the first static pressure sensor 75 and the dispensing opening 310. It is preferable that the second static pressure sensor 74 is disposed at the intermediate position between the first static pressure sensor 75 and the dispensing opening 310.

Since the first static pressure sensor 75 is located far away from the outlet port 310 from which the air supply SA is extracted from the second static pressure sensor 74, the pressure measured by the first static pressure sensor 75 is smaller than the pressure measured by the second static pressure sensor 74). ≪ / RTI >

The outside air temperature sensor 78 may be installed in the sub outside air flow path 43. The outdoor air temperature sensor 78 may be installed outdoors. The outside air temperature sensor 78 can measure the temperature of the outside air OA flowing outdoors.

Alternatively, the outside air temperature sensor 78 may be installed in the outside air flow path 123. At this time, the outside air temperature sensor 78 can measure the temperature of the outside air OA flowing into the air conditioning unit 1 by heat exchange in the outside air heat exchanger 47 in the ventilation unit 3.

The mixing temperature sensor 79 may be disposed inside the main body 10 of the air conditioning unit 1. [ More specifically, the mixing temperature sensor 79 may be installed in the mixing unit 100. The mixing temperature sensor 79 may be connected to the outside air suction unit 120, the indoor air suction unit 110 and the bypass unit 130 to measure the temperature of the mixed air in the mixing unit 100.

The age detection sensor 80 may be disposed indoors. In more detail, the mountainside sensor 80 may be installed in the ceiling scene 56. The almanac sensor 80 can detect smoke generated in the room 50. [ When smoke is generated in the room 50 due to a fire or the like, the almanac sensor 80 can detect this.

14 is a control block diagram for controlling the air conditioning system.

Referring to FIG. 14, the air conditioning system may include a control unit 90. The control unit 90 may include a controller 295 as an air conditioning unit control unit, a ventilation unit control unit, and a chiller unit control unit.

The control unit 90 may further include a central control unit for communicating with the controller 295, the ventilation unit control unit, and the chiller unit control unit, respectively. At this time, the central control unit may include a building management system (BMS) of a building provided with an air conditioning system.

That is, the control unit 90 can control the air conditioning unit 3, the ventilation unit 3 and the chiller unit 5 through the central control, and controls the air conditioning unit 3, the ventilation unit 3, the chiller unit 5 ) May be separately controlled.

The control unit 90 can control the air conditioning system according to various modes. The control mode of the controller 90 may include a main mode and a sub mode.

The main mode may mean a normal mode, a normal board, a basic mode, and the like. The main mode can mean the most basic control mode of the air conditioning system. The control unit may enter the main mode when a predetermined time has elapsed after the start of operation of the air conditioning system. Or, when the required condition is satisfied, the control unit can enter the main mode.

 The sub mode may mean a guitar mode, a spare mode, an emergency mode, etc., and may be performed before or after the main mode. It is also possible to perform during the main mode in a specific condition.

The controller 90 can receive the temperature sensed by the temperature sensor 65. [ More specifically, the control unit 90 controls the temperature measured by at least one of the indoor temperature sensor 70, the air supply temperature sensor 71, the return temperature sensor 72, the ambient temperature sensor 78, and the mixed temperature sensor 79 Respectively. In addition, the controller 90 can receive and sense the temperature measured by the intake temperature sensor 63 and the outflow temperature sensor 64.

The controller 90 can receive and sense the concentration of the carbon dioxide measured by the carbon dioxide sensor 73.

The control unit 90 may receive and sense the pressure measured by the static pressure sensor 76.

The control unit 90 can receive and sense a smoke generation signal when the smoke sensor 80 senses smoke. The control unit 90 can enter the emergency mode when the smoke sensor is sensed by the almanac sensor 80. In the emergency mode, the control unit 90 can stop the air conditioning system. More specifically, in the emergency mode, the control unit 90 can stop the air conditioning unit 1, the chiller unit 3, and the ventilation unit 5, respectively.

The control unit 90 can control the cooling water valve 62. [ More specifically, the control unit 90 may control the opening degree of the cooling water valve 62 to adjust the flow rate of the cold water flowing through the cold water circulation channel 114. As the opening degree of the cooling water valve 62 increases, the amount of cold water flowing into the heat exchanger 111 and / or the outside heat exchanger 47 may increase. Therefore, the temperature of the air to be heat-exchanged in the heat exchanger 111 and / or the outside air heat exchanger 47 can be further lowered.

The control unit 90 can control the outside-air damper 121. More specifically, the control unit 90 controls the opening degree of the outside air damper 121 to adjust the amount of the outside air OA flowing into the outside air suction unit 120. As the opening degree of the outside air damper 121 increases, the amount of the outside air OA flowing into the outside air suction portion 120 can be increased. Therefore, the proportion of the outside air OA in the mixed air in the mixing unit 100 can be increased.

The control unit 90 can control the bypass damper 131. [ More specifically, the control unit 90 controls the opening degree of the bypass damper 131 to adjust the amount of the circulating air RA flowing into the bypass unit 130. As the opening degree of the bypass damper 131 increases, the amount of the circulating air RA flowing into the bypass unit 130 can be increased. Therefore, in the mixed air in the mixing unit 100, the proportion of the circulating air RA bypassed from the heat exchanger 111 can be increased.

The control unit 90 can control the circulation pump 61. [ More specifically, the control unit 90 can control the flow rate of cold water circulating along the cold water circulation flow path 114 by controlling the operation frequency of the circulation pump 61. As the operating frequency of the circulation pump 61 increases, the flow rate of the cold water circulating along the cold water circulating flow path 114 may increase. Therefore, the amount of the cold water flowing into the heat exchanger 111 and / or the outdoor heat exchanger 47 can be increased, and the temperature of the air exchanged in the heat exchanger 111 and / You can go down.

The control unit 90 can control the blower mechanism 210. More specifically, the control unit 90 can control the rotation of the blowing fan 211 by controlling the operation frequency of the motor 212 included in the blowing unit 210. As the rotation speed of the blowing fan 211 increases, the flow rate of the air supply SA blown out through the blowing out port 310 increases, and the pressure inside the floor duct 59 may increase.

That is, the controller 90 controls the blower mechanism 210 so that the static pressure of the room 50 set by the user can be maintained. The controller 90 may also control the blower mechanism 210 to vary the air flow rate of air taken out from the air outlet 310 and the outlet body 52.

The control unit 90 can control the exhaust damper 23. More specifically, the control unit 90 can control the opening degree of the exhaust damper 23 to adjust the amount of the exhaust EA flowing into the exhaust passage 22. As the opening degree of the exhaust damper 23 increases, the amount of the exhaust EA flowing from the air conditioning chamber 20 to the exhaust portion 31 of the ventilation unit 3 through the exhaust passage 22 can be increased.

The control unit 90 may control the sub outside air damper 42. [ More specifically, the control unit 90 can control the opening degree of the sub outside-air damper 42 to adjust the amount of the outside air OA flowing into the outside-air introducing unit 41. As the opening degree of the sub air conditioner damper 42 increases, the amount of the outside air OA flowing into the outside base portion 32 through the outside air introducing portion 41 outdoors can be increased.

The control unit 90 can control the sub-exhaust damper 39. [ More specifically, the control unit 90 can control the opening degree of the sub-exhaust damper 39 to adjust the amount of the exhaust EA flowing into the exhaust discharge unit 38. [ As the opening degree of the sub-exhaust damper 39 increases, the amount of exhaust EA discharged from the exhaust portion 31 to the outside through the exhaust discharge portion 38 can be increased.

The control unit 90 can control the mixing damper 35. [ More specifically, the control unit 90 may control the opening of the mixing damper 35 to adjust the amount of air passing through the opening 34. As the opening degree of the mixing damper 35 increases, the amount of air flowing from the exhaust part 31 to the outer base part 32 through the opening part 38 can be increased.

The control unit 90 can control the exhaust blower orifice 36. More specifically, the control unit 90 can control the operating frequency of the exhaust blower opening 36. [ As the operating frequency of the exhaust blower opening 36 increases, the air sucked from the air conditioning chamber 20 to the exhaust portion 31 through the exhaust flow path 22 and the air sucked from the exhaust portion 31 through the exhaust discharge portion 38 The amount of air to be discharged and the amount of air flowing from the exhaust part 31 to the outer base part 32 through the opening part 34 can be increased.

The control unit 90 can control the outside air blower opening 37. [ More specifically, the control unit 90 can control the operating frequency of the outside air blower opening 37. The air flowing from the exhaust portion 31 to the outer base portion 32 through the opening portion 34 and the air flowing into the outer base portion 32 through the outside air introduction portion 41 become larger as the operating frequency of the outside air blower opening 37 increases. The amount of air to be inhaled and the amount of air flowing into the air conditioning unit 1 through the outside air flow path 123 can be increased.

The control unit 90 can control the heating heater 77. The control unit 90 can control the temperature of the circulating air RA in the air conditioning chamber 20 by controlling the temperature of the heating heater 77 by turning the heating heater 77 on or off.

FIG. 15 is a flowchart showing the operation sequence of the air conditioning system during the cooling operation, and FIG. 16 is a flowchart showing the operation sequence of the air conditioning system during the heating operation.

The air conditioning system can perform a cooling operation or a heating operation. The control unit 90 can determine the cooling operation or the heating operation according to the user's command.

Or the control unit 90 can determine the cooling operation or the heating operation according to the outdoor temperature. For example, since the outdoor temperature is high in summer, cooling operation can be performed. In winter, the outdoor temperature is low, so that heating operation can be performed. However, the present invention is not limited to this, and cooling operation or heating operation can be determined in consideration of other factors.

The cooling operation and the heating operation may be essentially the same operation in that the temperature of the room 50 is kept constant.

On the other hand, the controller 90 can control the air conditioning system according to the measured temperature T and the desired temperature W.

The measured temperature T may be the temperature sensed by the temperature sensor 65. [ More specifically, the measured temperature T is detected in any one of the room temperature sensor 70, the air supply temperature sensor 71, the return temperature sensor 72, the outside air temperature sensor 78, and the mixed temperature sensor 79 Lt; / RTI > The measured temperature T may be the temperature sensed by any one of the indoor temperature sensor 70, the air supply temperature sensor 71 and the return temperature sensor 72. [

As described above, the room temperature sensor 70 can be disposed in the room 50 connected to the air conditioning unit 1 by a duct. More specifically, the room temperature sensor 70 may be disposed in the room 50 connected to the air outlet 310 of the air conditioning unit 1 and the floor duct 59.

The air supply temperature sensor 71 and the return temperature sensor 72 may be installed in a duct connecting the air conditioning unit 1 and the room 50. More specifically, the supply air temperature sensor 71 may be disposed in a floor duct 59 connecting the outlet 50 of the air conditioning unit 1 and the room 50, and the return temperature sensor 72 may be disposed in the air conditioning room 20 Or in a conditioning duct 53 connecting the room 20 and the room 50. [

The desired temperature W may be the temperature of the room 50 desired by the user. The user can input the desired temperature through the interface included in the control unit 290 or through the central control. Or the desired temperature W may be basically a set temperature.

Referring to FIG. 15, at the start of the cooling operation, the controller 90 may compare the measured temperature T with the pre-cooling determination temperature A (S1).

The pre-cooling judgment temperature A may be a temperature lower than the desired temperature W. The pre-cooling judgment temperature (A) may vary depending on the desired temperature (W). The pre-cooling judgment temperature A may be a temperature as low as a predetermined set value at the desired temperature W. [ For example, if the desired temperature W is 24 占 폚 and the set value is 0.5 占 폚, the pre-cooling determination temperature A may be 23.5 占 폚.

If the measured temperature T is less than the pre-cooling determination temperature A, the control unit 90 can immediately enter the on-time control mode S300. The on-time control mode (S300) will be described later in detail.

On the other hand, if the measured temperature T is equal to or higher than the pre-cooling determination temperature A, the control unit 90 can enter the pre-cooling control mode S100.

The pre-cooling control mode (SlOO) may be a sub control mode. More specifically, the pre-cooling control mode S100 is a mode for cooling the room 50 preferentially prior to entering the main control mode since the temperature of the present room 50 is too high compared to the desired temperature W .

Hereinafter, the control in the pre-cooling control mode (S100) will be described.

In the pre-cooling control mode (S100), the control unit 90 can control the outside air damper 121 and the exhaust damper 23 to be fully open. The full opening of the damper may mean the maximum opening of the damper.

When the outside air damper 121 is fully opened, the amount of outdoor air OA flowing into the air conditioning unit 100 increases, and when the exhaust damper 23 is fully opened, the circulating air RA of the air conditioning room 20 The amount of outflow to the outdoors may increase. In other words, since the inflow of the outside air OA and the outflow of the outside air EA are maximized in the air conditioning system, the room 50 can be ventilated smoothly, so that the warmed air can be discharged from the room 50.

In addition, the controller 90 can control the bypass damper 131 to be fully closed during the pre-cooling control mode (S100). The full close of the damper may mean that the opening of the damper is completely closed.

When the bypass damper 131 is fully closed, the circulating air RA flowing into the mixing unit 100 through the bypass unit 130 can be shut off. That is, the hot circulating air RA circulated in the room 50 may not be included in the air supply SA. Therefore, the temperature of the air supply SA taken out through the air outlet 310 and supplied to the room 50 through the floor duct 59 can be lowered, whereby the room 50 can be cooled.

In the precooling control mode (S100), the controller (90) can control the cooling water valve (62) to be fully open. The full opening of the valve may mean the maximum opening of the valve.

When the cooling water valve 62 is fully opened, the flow rate of cold water supplied from the chiller unit 5 and circulating along the cold water circulating flow path 114 may increase. Therefore, the flow rate of the cold water flowing into the heat exchanger 111 through the inlet flow path 115 can be increased, and heat exchange between the cold water and the air can be more actively performed in the heat exchanger 111. That is, the air sucked into the indoor air suction unit 110 is sufficiently cooled by the heat exchanger 111 and can be included in the air supply unit SA, and the air supply unit SA is connected to the indoor unit 50 through the floor duct 59 And the room 50 can be cooled.

Also, in the pre-cooling control mode (S100), the control unit 90 can turn on the fan bulb 210.

After performing the pre-cooling control mode (S100), the controller (90) can again compare the measured temperature (T) with the pre-cooling determination temperature (A) (S1).

As the pre-cooling control mode S100 is performed, the temperature of the room 50 can be lowered and the measured temperature T can be lower than the pre-cooling judgment temperature A when a predetermined time has elapsed. In this case, the control unit 90 can enter the on-time control mode (S300).

Referring to FIG. 16, at the start of the heating operation, the controller 90 may compare the measured temperature T with the preheating determination temperature B (S2).

The preheating determination temperature B may be a temperature higher than the desired temperature W. The preheating determination temperature (B) may vary depending on the desired temperature (W). The preheating determination temperature B may be a temperature that is higher than the desired temperature W by a preset value. For example, if the desired temperature W is 24 占 폚 and the set value is 0.5 占 폚, the preheating determination temperature B may be 24.5 占 폚.

If the measured temperature T exceeds the preheating determination temperature B, the controller 90 may immediately enter the on-time control mode S300.

On the other hand, if the measured temperature T is equal to or higher than the preheating determination temperature B, the control unit 90 can enter the heating preheating control mode S200.

The heating preheating control mode (S200) may be a sub control mode. More specifically, the heating / warming-up control mode (S200) is a mode for heating the room 50 preferentially prior to entering the main mode since the temperature of the present room 50 is too low compared to the desired temperature W .

Hereinafter, the control in the heating preheating control mode (S200) will be described.

In the heating / warming-up control mode (S200), the control unit 90 can control the outside air damper 121 and the exhaust damper 23 to be fully closed.

When the outside air damper 121 is fully closed, the outdoor outside air OA does not flow into the air conditioning unit 100. When the exhaust damper 23 is fully closed, the circulating air RA of the air conditioning room 20 flows out . That is, since the outside air OA and the exhaust air EA do not flow in the air conditioning system, the air warmed in the room 50 can be continuously circulated and the temperature of the room 50 can be raised.

In the heating preheating control mode (S200), the controller (90) can control the cooling water valve (62) to be fully closed. Full close of the valve may mean that the valve is fully closed.

When the cooling water valve 62 is fully closed, the cold water supplied from the chiller unit 5 may not circulate along the cold water circulating flow path 114. Therefore, cold water may not flow into the heat exchanger 111 through the inlet flow path 115, and heat exchange between the cold water and the air may not occur in the heat exchanger 111. That is, the air sucked into the indoor air suction unit 110 can be included in the air supply unit SA without being cooled by the heat exchanger 111, and the air supply unit SA can be connected to the indoor unit 50 So that the room 50 can be heated.

In addition, the control unit 90 can control the bypass damper 131 to be fully closed during the heating preheating control mode (S200). It is not necessary to bypass the heat exchanger 111 because the present cooling water valve 62 is fully closed and the air sucked into the indoor air intake unit 110 is not heat-exchanged in the heat exchanger 111, as described above.

In addition, the control unit 90 can turn on the fan bulb 210 in the heating preheating control mode (S200).

Further, in the heating preheating control mode (S200), the controller 90 can turn on the heating heater 77. [

The temperature of the air conditioning chamber 20 is raised when the heating heater 77 is turned on so that the temperature of the air flowing into the air conditioning unit 1 through the indoor air intake portion 110 can be raised. Therefore, the temperature of the air flowing into the room 50 through the floor duct 59 at the outlet 310 increases, and the room 50 can be heated.

After performing the heating preheating control mode S200, the controller 90 may compare the measured temperature T with the preheating determination temperature B (S2).

As the heating preheating control mode S200 is executed, the temperature of the room 50 can be increased, and the measured temperature T may be higher than the preheating determination temperature B when a predetermined time has elapsed. In this case, the control unit 90 can enter the on-time control mode (S300).

17 is a flowchart showing the operation sequence of the air conditioning system in the regular control mode.

The on-time control mode (S300) may be the main control mode. The on-time control mode (S300) may be a temperature-based mode for keeping the temperature of the room (50) constant at the desired temperature (W).

Hereinafter, the control in the regular control mode (S300) will be described.

17, the controller 90 can control the outside air damper 121 and the exhaust damper 23 at a predetermined opening degree upon entering the on-time control mode (S300), and the bypass damper 131 and the cooling water The valve 62 can be fully opened (S301).

Further, if the heating heater 77 has been previously turned on, the controller 90 can turn off the heating heater 77 upon entering the regular control mode.

The control unit 90 may compare the measured temperature T with the lower limit set value W1 of the desired temperature (S310).

The lower limit set value W1 of the desired temperature may be a temperature obtained by subtracting a predetermined set value from the desired temperature W. [ For example, if the desired temperature W is 24 占 폚 and the set value is 1 占 폚, the lower limit set value W1 of the desired temperature may be 23 占 폚.

If the measured temperature T is equal to or higher than the lower limit set value W1 of the desired temperature, the control unit 90 can compare the measured temperature T with the desired temperature upper set value W2 (S320).

The upper limit set value W2 of the desired temperature may be a temperature obtained by adding a predetermined set value at the desired temperature W. [ For example, if the desired temperature W is 24 占 폚 and the set value is 1 占 폚, the desired temperature upper limit set value W2 may be 25 占 폚.

If the measured temperature T is less than the lower limit set value W1 of the desired temperature, the control unit 90 can preferentially control the bypass damper 131 over the cooling water coil 62. [

If the measured temperature T is less than the lower limit set value W1 of the desired temperature, the control unit 90 determines whether the measured temperature T is equal to or higher than the lower limit set value W1 of the desired temperature or the bypass damper 131 is fully open The opening degree of the bypass damper 131 can be increased by a first predetermined opening degree in a first predetermined period.

When the measured temperature T is less than the lower limit set value W1 of the desired temperature and the bypass damper 131 is fully opened, the controller 90 determines that the measured temperature T is equal to or higher than the lower limit set value W1 of the desired temperature, The opening degree of the cooling water valve 62 can be decreased by the second predetermined opening degree by the second predetermined opening degree until the door 62 is fully closed.

More specifically, when the measured temperature T is less than the lower limit set value W1 of the desired temperature, the controller 90 may increase the opening degree of the bypass damper 131 by a predetermined first set opening degree (S311). For example, if the first set opening degree is 10% of the total opening degree, the control section 90 can increase the opening degree of the bypass damper 131 by 10%.

When the opening degree of the bypass damper 131 is increased, the amount of the circulating air RA flowing into the air conditioning unit 1 through the bypass unit 130 increases, so that the temperature of the air supply unit SA can be increased, The temperature of the heat exchanger 50 may rise. Therefore, the measurement temperature T can be increased.

If the degree of opening of the bypass damper 131 is increased by the first predetermined opening degree, the controller 90 may compare the measured temperature T with the desired temperature lower limit set value W1 again at step S312.

At this time, if the measured temperature T is equal to or higher than the desired temperature lower limit set value W1, the control unit 90 can compare the measured temperature T with the upper set value W2 of the desired temperature (S320). On the other hand, if the measured temperature T is less than the lower limit set value W1 of the desired temperature, the control unit 90 can determine whether the bypass damper 131 is in a fully opened state (S313).

If the bypass damper 131 is not in the fully opened state, the controller 90 may increase the opening degree of the bypass damper 131 by the first set opening degree (S311). At this time, the degree of opening of the bypass damper 131 may be increased by the first predetermined opening degree in accordance with the first predetermined period. For example, if the first predetermined period is 3 minutes and the first predetermined opening degree is 10%, the opening degree of the bypass damper 131 is increased by 10% and the opening degree of the bypass damper 131 is increased by 10% .

That is, the control steps of S311 to S313 are repeated according to the first predetermined period, and the opening degree of the bypass damper 131 may gradually increase.

When the bypass damper 131 is fully opened, the control unit 90 can reduce the opening degree of the cooling water valve 62 by the second predetermined opening degree (S314). If the measured temperature T is lower than the lower limit set value W1 of the desired temperature even though the bypass damper 131 is fully opened and the bypass valve 132 is opened, So that the temperature of the room can be raised.

When the opening degree of the cooling water valve 62 is decreased, the amount of the cold water flowing into the heat exchanger 111 through the intake flow path 115 decreases, so that the air introduced into the indoor air intake unit 110 flows into the heat exchanger 111 Can be less air-cooled. Therefore, the temperature of the supply air SA can be raised, and the temperature of the room 50 can be raised, and the measured temperature T can be raised.

If the opening degree of the cooling water valve 62 is reduced by the second predetermined opening degree, the control unit 90 may compare the measured temperature T with the desired temperature lower limit set value W1 again (S315).

At this time, if the measured temperature T is equal to or higher than the desired temperature lower limit set value W1, the control unit 90 can compare the measured temperature T with the desired temperature upper set value W2 (S320). On the other hand, if the measured temperature T is less than the desired temperature lower limit set value W1, the controller 90 may further reduce the opening degree of the cooling water valve 62 by the second set opening degree (S314).

At this time, the opening degree of the cooling water valve 62 may be reduced by the second predetermined opening degree in accordance with the second predetermined period. For example, if the second predetermined period is 3 minutes and the second predetermined opening degree is 10%, the opening degree of the cooling water valve 62 is reduced by 10% and the opening degree of the cooling water valve 62 is further reduced by 10% have.

That is, the control steps of S314 to S315 are cycled according to the second predetermined cycle, and the opening degree of the cooling water valve 62 can be gradually decreased.

Meanwhile, the controller 90 may compare the measured temperature T with the desired temperature upper limit set value W2 (S320).

The controller 90 can control the cooling water valve 62 more preferentially than the bypass damper 131 when the measured temperature T exceeds the upper limit set value W2 of the desired temperature.

If the measured temperature T exceeds the upper limit set value W2 of the desired temperature, the control unit 90 determines whether the measured temperature T is lower than the upper limit set value W2 of the desired temperature or the cooling water valve 62 is fully opened The opening degree of the valve 62 can be increased by the third predetermined degree in the third predetermined cycle.

When the measured temperature T exceeds the upper limit set value W2 of the desired temperature and the cooling water valve 62 is fully opened, the controller 90 determines that the measured temperature T is lower than the upper limit set value W2 of the desired temperature, The opening degree of the bypass damper 131 can be decreased by the fourth predetermined opening degree by the fourth predetermined opening degree until the door 131 is fully closed.

More specifically, if the measured temperature T exceeds the upper limit set value W2 of the desired temperature, the controller 90 can increase the opening degree of the cooling water valve 62 by the third predetermined opening degree (S321). For example, if the third set opening degree is 10% of the total opening degree, the control section 90 can increase the opening degree of the cooling water valve 62 by 10%.

When the opening degree of the cooling water valve 62 is increased, the amount of the cold water flowing into the heat exchanger 111 through the intake flow path 115 increases, so that the air introduced into the indoor air intake unit 110 passes through the heat exchanger 111 It can be more air-cooled. Accordingly, the temperature of the supply air SA can be lowered, thereby lowering the temperature of the room 50, so that the measured temperature T can be lowered.

If the opening degree of the cooling water valve 62 is increased by the third predetermined opening degree, the control unit 90 can compare the measured temperature T with the desired temperature upper limit setting value W2 again (S322).

At this time, if the measured temperature T is not higher than the desired temperature upper limit set value W2, the control unit 90 can compare the measured temperature T with the lower set value W2 of the desired temperature (S310). On the other hand, if the measured temperature T exceeds the upper limit set value W2 of the desired temperature W, the control unit 90 can determine whether the cooling water valve 62 is in the fully opened state (S323).

If the cooling water valve 62 is not in the fully opened state, the controller 90 may increase the opening degree of the cooling water valve 62 by the third set opening degree (S321). At this time, the opening degree of the cooling water valve 62 is increased by the third predetermined opening degree in accordance with the third predetermined period. For example, if the third predetermined period is 3 minutes and the third predetermined opening degree is 10%, the opening degree of the cooling water valve 62 is increased by 10%, and after 3 minutes, the opening degree of the cooling water valve 62 can be further increased by 10% have.

That is, the control steps of S321 to S323 are cycled according to the third predetermined cycle, and the opening of the cooling water valve 62 may gradually increase.

When the cooling water valve 62 is fully opened, the control unit 90 can reduce the opening degree of the bypass damper 131 by the fourth setting degree (S324). That is, if the opening degree of the cooling water valve 62 is preferentially increased and the measured temperature T is still above the upper limit set value W2 of the desired temperature even when the cooling water valve 62 is fully opened, the bypass damper 131 is controlled So that the temperature of the room can be lowered.

When the opening degree of the bypass damper 131 is reduced, the amount of the circulating air RA flowing into the air conditioning unit 1 through the bypass unit 130 decreases, so that the temperature of the air supply unit SA can be lowered, The temperature of the heat exchanger 50 may be lowered. Therefore, the measurement temperature T can be lowered.

If the degree of opening of the bypass damper 131 is reduced by the fourth predetermined opening degree, the controller 90 may compare the measured temperature T with the desired temperature upper limit set value W2 again (S325).

At this time, if the measured temperature T is not higher than the desired temperature upper limit set value W2, the control unit 90 can compare the measured temperature T with the desired temperature lower limit set value W1 (S310). On the other hand, if the measured temperature T exceeds the desired temperature upper limit set value W2, the controller 90 may further reduce the opening degree of the bypass damper 131 by the fourth set opening degree (S324).

At this time, the opening degree of the bypass damper 131 may be reduced by the fourth predetermined opening degree in accordance with the fourth predetermined period. For example, if the fourth predetermined period is 3 minutes and the fourth predetermined opening degree is 10%, the opening degree of the bypass damper 131 is reduced by 10% and the opening degree of the bypass damper 131 is further reduced by 10% .

That is, the control steps of S324 to S325 are cycled according to the fourth predetermined cycle, and the opening degree of the bypass damper 130 may gradually decrease.

In the time control mode (S300), the controller (90) compares the measured temperature (T) with the desired temperature (W) and can control the air conditioning system continuously. Thereby, the temperature of the room 50 can be kept constant at the desired temperature W.

Meanwhile, as described above, the sub-mode may include the pre-cooling control mode S100 and the heating preheating control mode S200. In addition, the sub-mode may further include a carbon dioxide control mode and a constant pressure control mode.

Hereinafter, the carbon dioxide control mode will be described.

The concentration of carbon dioxide in the room 50 can be continuously increased by the respiration of the people in the room 50. [ That is, the carbon dioxide concentration of the circulating air RA can be gradually increased. The carbon dioxide control mode may be a mode for controlling the concentration of carbon dioxide in the room 50.

The carbon dioxide control mode can be performed simultaneously with the pre-cooling control mode (S100), the heating preheating control mode (S200), and the regular control mode (S300). The carbon dioxide control mode may be performed independently of the pre-cooling control mode (S100), the heating preheat control mode (S200), and the regular control mode (S300).

The control unit 90 can control the outside air damper 121 and the exhaust damper 23 in accordance with the measured concentration D detected by the carbon dioxide sensor 73 for measuring the concentration of carbon dioxide in the air .

More specifically, the control unit 90 can increase the opening degrees of the outside-air damper 121 and the exhaust damper 23 when the measured concentration D is higher than a predetermined set concentration. Preferably, the controller 90 can open the outside air damper 121 and the exhaust damper 23 in a fully open state.

When the opening degree of the exhaust damper 23 is increased, the circulated air RA circulated from the room 50 to the air conditioning chamber 20 through the conditioning duct 53 is exhausted through the exhaust passage 22 to the outside ) Can be increased. Therefore, the ratio of the circulating air RA flowing into the air conditioning unit 1 through the indoor air suction unit 110 and / or the bypass unit 130 to the supply air SA is reduced, and the ratio of the carbon dioxide The concentration may be lowered.

Also, when the opening degree of the outside air damper 121 increases, the amount of the outside air OA flowing into the air conditioning unit 1 through the outside air intake portion 120 can be increased. The carbon dioxide concentration of the outside air OA may be relatively low as compared with the air in the room 50. [ Therefore, the ratio of the outside air OA to the air supply SA increases, and the carbon dioxide concentration of the air supply SA can be lowered.

That is, as the opening degree of the outside air damper 121 and the exhaust damper 23 increases, the carbon dioxide concentration of the air supply SA flowing into the room 50 through the floor duct 59 at the air outlet 310 becomes low, 50) can be lowered.

Hereinafter, the constant pressure control mode will be described.

Air that has flowed from the air outlet 310 to the floor duct 59 can be introduced into the room 50 through the outlet body 52. At this time, it is preferable that the pressure of the supply air (SA) flowing from the outlet body (52) to the room (50) maintains a constant pressure which is a predetermined pressure. If dust or the like is accumulated in the outlet body 52, the air supply to the room 50 through the outlet body 52 may not be smooth and the pressure inside the floor duct 59 may increase. The constant pressure control mode may be a mode for keeping the pressure constant at a constant pressure.

The constant pressure control mode can be implemented simultaneously with the pre-cooling control mode (S100), the heating preheating control mode (S200), and the regular control mode (S300). The constant pressure control mode may be performed independently of the pre-cooling control mode (S100), the heating preheating control mode (S200), and the regular control mode (S300).

In the constant pressure control mode, the controller 90 can control the operating frequency of the blower mechanism 210 in accordance with the measured pressure P sensed by the constant pressure sensor 76.

At this time, the measurement pressure P is measured by the first static pressure sensor 75 disposed at the end far from the outlet port 310 of the floor duct 59 and the second static pressure sensor 75 disposed between the outlet port 310 and the first static pressure sensor 75 And the average pressure of the respective pressures measured by the second static pressure sensor 74. The pressure in the floor duct 59 can be varied depending on the distance from the outlet 310 so that the pressure in the floor duct can be measured more accurately through the average pressure of the first static pressure sensor 75 and the second static pressure sensor 74 have.

The control unit 90 can control the operation frequency of the blower mechanism 210 to be higher when the measured pressure P is lower than a preset static pressure.

When the operating frequency of the blower port 210 is increased, the air volume of the air blown out to the blowout port 310 and the outlet body 52 can be strengthened, and the pressure in the floor duct 59 can be increased. As a result, the pressure drop factors such as dust accumulated in the outlet body 52 can be removed.

According to a preferred embodiment of the present invention, the temperature of the air introduced into the air conditioning unit by the heating heater is increased, so that indoor heating can be performed.

In addition, the amount of cold water introduced into the heat exchanger can be controlled to enable indoor heating.

In addition, indoor air can be circulated by interrupting the inflow of outside air and heating the room.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: air conditioning unit 3: ventilation unit
5: Chiller unit 10: Body
20: air conditioner 23: exhaust damper
50: Indoor 52: Outlet body
53: Slinging duct 54: Inlet body
59: Floor duct 65: Temperature sensor
73: carbon dioxide sensor 76: constant pressure sensor
77: Heating heater 90:
110: Indoor air intake part 111: Heat exchanger
114: cold water circulating flow path 120:
121: Ambient air damper 130: Bypass section
131: bypass damper 210: blowing mechanism
310:

Claims (12)

An indoor air suction unit, a heat exchanger for exchanging heat with the air introduced into the indoor air suction unit, and a bypass unit for bypassing the heat exchanger to introduce air into the indoor unit;
A heating heater disposed in an air conditioning room in which the air conditioning unit is installed;
A chiller unit connected to the heat exchanger by a cold water circulation channel;
A bypass damper installed in the bypass section;
A cooling water valve provided in the cold water circulation passage;
A temperature sensor for measuring temperature; And
And a controller for controlling the cooling water valve to be fully closed when the heating / preheating control mode is selected, and turning on the heating heater. The method according to claim 1,
Wherein the control unit controls the bypass damper to be fully closed in a heating preheating mode. The method according to claim 1,
Further comprising an exhaust damper disposed in the air conditioning room,
Wherein the air conditioning unit further includes an outside air suction portion provided with an outside air damper,
And the control unit controls the exhaust damper and the outside-air damper. The method of claim 3,
Wherein,
And controls the outdoor air damper and the exhaust damper to be fully closed in the heating preheating control mode. The method according to claim 1,
Wherein,
If the measured temperature detected by the temperature sensor is lower than the preheating determination temperature, the heating preheating control mode is performed,
Wherein the controller enters the normal control mode for controlling the bypass damper and the cooling water valve according to the measured temperature and the desired temperature when the measured temperature exceeds the preheating determination temperature. 6. The method of claim 5,
Wherein,
And controls the outdoor damper and the exhaust damper to be in a set opening degree when the normal control mode is entered, controls the bypass damper and the cooling water valve to be fully opened, and turns off the heating heater. 6. The method of claim 5,
Wherein,
And controls the bypass damper more preferentially than the cooling water coil when the measured temperature is lower than the lower limit set value of the desired temperature in the regular control mode. 6. The method of claim 5,
Wherein,
The bypass damper is opened in a first control mode until the measured temperature is equal to or higher than a lower limit set value of the desired temperature or when the bypass damper is fully opened when the measured temperature is lower than the lower limit set value of the desired temperature, And increases by a first predetermined opening degree in a predetermined cycle. 9. The method of claim 8,
Wherein,
Wherein the control unit controls the opening degree of the cooling water valve to a second set period until the measured temperature is equal to or lower than the lower limit set value or the cooling water valve is fully closed, when the measured temperature is lower than the lower limit set value of the desired temperature and the bypass damper is fully opened, The air conditioning system reduces the set air volume. 6. The method of claim 5,
Wherein,
And controls the cooling water valve in preference to the bypass damper when the measured temperature exceeds the upper limit set value of the desired temperature in the regular control mode. 6. The method of claim 5,
Wherein,
The control unit controls the opening degree of the cooling water valve to a third predetermined period until the measured temperature is equal to or lower than the upper limit set value of the desired temperature or until the cooling water valve is fully opened, The air conditioning system according to claim 1, further comprising: 12. The method of claim 11,
Wherein,
When the measured temperature exceeds the upper limit set value of the desired temperature and the cooling water valve is fully opened, the opening degree of the bypass damper is controlled until the measured temperature is equal to or lower than the upper limit set value of the desired temperature, or until the bypass damper is fully closed. The air-conditioning system further comprising:

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