JPH11141962A - Central air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a central air-conditioning system to supply airflow corresponding to a cooling heating load of each room during rise of cooling and heating, and to uniformize rise when a plurality of rooms are simultaneously cooled and heated. SOLUTION: Air-conditioning air outlets 3 of a plurality of rooms 2 of a housing 1 and one air-conditioning device body 4 arranged in the proper place of a housing are intercommunicated together through a duct 5 for supply of air-conditioning air. An air-conditioning air supplied through a duct 5 by an air supply means arranged at the air-conditioning body 4 is supplied to an air-conditioning air outlet 3 of each room 2. In a so formed central air- conditioning system, a flow rate regulating damper to regulate an air flow flowing through each duct 5 is arranged in a flow passage corresponding to each duct 5. A set part is provided to set the maximum opening of each flow rate regulation damper such that a maximum air flow supplied to each room 2 during rise of air-conditioning is adjusted to a value predetermined according to whether a room is situated in the south or in the north, whether air- conditioning is cooling or heating, and whether the area of a room is wide or narrow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner main body in which air-conditioning air outlets in a plurality of rooms of a house and one air conditioner main body installed at an appropriate place in the house are communicated with each other through a duct for supplying air conditioning air. The present invention relates to a central air-conditioning system that blows air-conditioned air blown by a blowing means provided in the air-conditioning air outlet of each room via a duct.

[0002]

2. Description of the Related Art Conventionally, in this type of central air conditioning system, air-conditioning air outlets of a plurality of rooms of a house and one air-conditioning device main body installed at an appropriate place in the house are respectively connected to air-conditioning air supply ducts. The air-conditioning air blown by the air-blowing means provided in the air-conditioning device body is blown out to the air-conditioning air outlet of each room through a duct, and a flow rate adjustment damper that adjusts the amount of air flowing through each duct is provided. It is provided in the flow path corresponding to each duct, and the amount of air sent to each room is adjusted by controlling the opening and closing of each flow rate adjustment damper (the cooling and heating capacity increases as the amount of air increases). Conventionally, when the air conditioner is started, each flow rate adjustment damper is fully opened to blow air.

[0003]

[0005] By the way, in the rooms of houses such as condominiums, there are rooms such as LDK, Japanese-style room, master bedroom, children's room, and the like. The cooling and heating load of each room differs depending on whether there is a difference, the difference between cooling and heating, and the like. However, in the case of the conventional central air-conditioning system, the air-conditioning air having the same air volume is sent to each duct by maximally opening the flow control damper of each room regardless of the room to be cooled or heated at the time of starting up the cooling and heating. In other words, when starting up the air conditioning, the same air volume is sent regardless of the condition of the room in order to perform air conditioning by blowing the same air volume in each room. There is a problem in that each room is significantly different, and it takes time for each room to become comfortable. In other words, a large room has a large load during both cooling and heating, a small room has a small load during both cooling and heating, and a room on the south side has a large cooling load and a small heating load. The north side room has a small cooling load and a large heating load, but when the same air volume is blown into each room, a room with a fast rise and a room with a slow rise are created, and the air conditioning of the desired room is in a predetermined state. There is a problem that it takes time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above description, and it is possible to blow air at a rate corresponding to the cooling and heating load of each room when starting up the cooling and heating, and to start up when performing cooling and heating of a plurality of rooms simultaneously. The aim is to provide a central air-conditioning system that can make the air conditioning uniform.

[0005]

In order to solve the above-mentioned problems, a central air-conditioning system according to a first aspect of the present invention comprises an air-conditioning air outlet 3 in a plurality of rooms 2 of a house 1 and a single air-conditioning system installed at an appropriate place in the house. The air conditioning device main body 4 is communicated with each of the air conditioning air supply ducts 5, and the conditioned air blown by the air blowing means provided in the air conditioning device main body 4 is passed through the duct 5 to the conditioned air outlet 3 of each room 2. In the blowout device, a flow rate adjustment damper 6 for adjusting the airflow flowing through each duct 5 is provided in a flow path corresponding to each duct 5, and the maximum airflow sent to each room 2 at the time of starting air conditioning is that the room is on the south side. Setting to set the maximum opening of each flow rate adjustment damper 6 so that the air flow rate is determined in advance depending on whether the air conditioning is cooling or heating, or whether the room area is large or small. Department Characterized by comprising Te. When simultaneously starting the cooling and heating of a plurality of rooms 2, the flow adjustment damper 6 is opened to the maximum opening corresponding to the cooling and heating load of each room 2,
By blowing air at a flow rate corresponding to each room 2, the start-up of air-conditioning in each room can be made uniform, and comfortable air-conditioning can be performed.

According to a second aspect of the present invention, in the central air conditioning system according to the first aspect, in the room 2 on the south side, the air volume during cooling is increased and the air volume during heating is reduced, and the room 2 is located on the north side. Room 2 is characterized in that the air flow during cooling is reduced and the air flow during heating is increased. Whether the room is south or north
Alternatively, the air can be blown at an optimum air volume depending on whether the air conditioner is air-conditioning or heating, so that the start-up of air-conditioning in each room 2 can be made uniform.

According to a third aspect of the present invention, there is provided a central air conditioning system according to the first or second aspect, wherein the room 2 of the house is composed of the LDK 2a and a plurality of private rooms.
When the diameters of the plurality of ducts 5 are the same, two ducts 5 communicating with the air conditioner body 4 are communicated with the LDK 2a having a large area and a large air conditioning load, and the other private rooms are each provided with one duct 5. It is characterized by communicating. LDK2 with a large air conditioning load even if ducts 5 of the same diameter can be used and piping can be performed easily with ducts 5 of the same diameter.
A sufficient air volume can be secured for a so that the start-up of cooling and heating can be made uniform.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of a typical 3LDK apartment will be described as an example of a house. FIG. 1 is a plan view of a house 1, which is divided into a plurality of rooms 2. In the case of this example, an LDK (living / dining kitchen) 2a, a Japanese-style room 2b, a main bedroom 2c, and a child room 2d are provided for a 3LDK house 1. The LDK 2a and the Japanese-style room 2b are located on the south side of the house 1, and the main bedroom 2c and the children's room 2d
Is located on the north side. In FIG. 1, 8 is the entrance, 9 is the hallway, 1
0 is a toilet, 11 is a dressing room, 12 is a bathroom, and 13 is LD
K2a kitchen, 14 is an LDK2a living room dining room, 15 is a range hood, 16 is a bin, and 17 is a closet.

In the case of the present invention, central air conditioning is performed, and an air conditioner main body 4 is arranged in a washroom 11. As shown in FIGS. 2 and 3, the air conditioner main body 4 is provided with a heat exchange chamber 18 for air conditioning, and the heat exchange chamber 18 for air conditioning has a heat exchanger 19 for cooling, a heat exchanger 20 for heating, A blower 21 is installed. The cooling heat exchanger 19 and the cooling outdoor unit 22 are communicated by a refrigerant pipe 23, and the heating heat exchanger 20 and the heat source unit 24 are communicated by a hot water pipe 25. The air conditioner main body 4 is provided with a damper unit 26 that communicates adjacent to the air conditioning heat exchange chamber 18. In the case of this example, the damper unit 26 is provided with five flow rate adjusting dampers 6 having the same capacity, and each flow rate adjusting damper 6 is provided with an air outlet 27, respectively. This flow control damper 6 is called a VAV damper,
The flow rate can be adjusted by rotating the damper blade.

The LDK 2a, the Japanese room 2b, the master bedroom 2c, and the children's room 2d are provided with air-conditioned air outlets 3 in each of the rooms 2, and the air outlets 3 and the air outlets 27 of the flow rate adjusting dampers 6 are air-conditioned. They are communicated by a duct 5 for supplying air. In this case, since the LDK 2a has a large area and a large cooling / heating load, two air-conditioned air outlets 3 are provided, and the two air-conditioned air outlets 3 and the two air outlets 27 are separately provided to the two ducts 5, respectively. Communication. The five ducts 5 have the same diameter, and for example, have a diameter of 150 mm in this example. LDK2a, Japanese style room 2
b, the main bedroom 2c, and the children's room 2d, each room 2 is provided with an air suction port 29, and the air suction port 29 and the heat exchange room 18 for air conditioning are communicated by a duct 30 for returning air. When the circulation blower 21 is driven, air is sent from the air-conditioning heat exchange chamber 18 to each duct 5 via the flow rate adjusting damper 6, and air-conditioning air is sent from each duct 5 to the air-conditioning air outlet 3, and The conditioned air is blown out to the room 2, and the exhaust air of each room 2 is sucked from the air suction port 29, and the air is circulated so as to return to the air conditioning heat exchange chamber 18 via the duct 30. At this time, cooling can be performed by exchanging heat with the cooling heat exchanger 19, and heating can be performed by exchanging heat with the heating heat exchanger 20. In addition,
The temperature of each room 2 can be adjusted by opening and closing each flow rate adjusting damper 6 to adjust the amount of air to be blown.

The air conditioner main body 4 is provided with a ventilator 31, and an air supply chamber 32, an exhaust chamber 33, and an exhaust heat exchanger 34 are arranged in the ventilator 31. An air supply blower 35 is disposed in the air supply chamber 32, and an exhaust air blower 36 is disposed in the exhaust chamber 33.
Is arranged. The LDK 2a, the washroom 11 and the like are provided with an exhaust port 37 exclusively for exhaust, and the exhaust port 33 and the exhaust chamber 33 are communicated by a duct 38 for exhaust. The exhaust chamber 33 communicates with the outside via an exhaust heat exchanger 34 and an exhaust duct 39, and the air supply chamber 32 communicates with the outside via an air supply duct 40. It communicates with the air conditioning heat exchange chamber 18 via 34. Thus, the supply air blower 35 and the exhaust blower 36
When the air conditioner is driven, fresh outdoor air is supplied to the air supply chamber 32 through the duct 40, and is supplied to the air-conditioning heat exchange chamber 18 through the exhaust heat exchanger 34. The exhausted air is exhausted from an exclusive exhaust port 37 through a duct 38 to an exhaust chamber 33, and the exhaust heat exchanger 3
4. The air is exhausted outside through the duct 39, and the air in the house 1 is ventilated. When performing this ventilation, the exhaust heat exchanger 3
At 4, the supply air and the exhaust gas undergo heat exchange, so that heat loss can be reduced and ventilation can be performed.

The air conditioner main body 4 has a control unit having a microcomputer built therein for controlling the air conditioner main body 4, so that the air conditioner main body 4 can be controlled by inputting a signal from a remote controller 45. Has become. The remote controller 45 includes a main remote controller 45a and a sub remote controller 45.
The main remote controller 45a is located in the LDK 2a, and the sub remote control 45b is located in the other room 2. As shown in FIG. 1, the toilet 10, the dressing room 11, and the bathroom 12 are provided with ventilation holes 41, 42, 43, respectively.
At 4, it is communicated outdoors. The range hood 15 is also communicated outdoors with a ventilation duct 44.

In the present invention, five flow control dampers 6 are provided, and each of the flow control dampers 6 is connected to the LDK 2a, the Japanese room 2b, the main bedroom 2c, and the five ducts 5 having the same diameter.
Each of the flow rate adjustment dampers 6 is provided with a setting unit for setting the maximum air volume at the start of cooling and heating (setting the maximum opening of the damper). The maximum air volume can be set by operating a switch or the like of a setting section of each flow rate adjusting damper 6 in accordance with the above. In other words, the maximum air volume to be sent to each room 2 when the air conditioning is started depends on whether the room 2 is on the south side or the north side, whether the air conditioning is cooling or heating, and whether the area of the room 2 is large or small. A setting unit is provided for setting the maximum opening of each flow rate adjusting damper 6 so that the air volume becomes a predetermined air volume. If the area of the room 2 is large, the maximum air volume is set to be large both during cooling and heating, and if the area of the room 2 is small, the maximum air volume is set to be small both during cooling and heating. In the room 2 on the south side, the maximum air volume is set to be large during cooling and the maximum air volume is set to be small during heating. In the room 2 on the north side, the maximum air volume is set to be small during cooling. And the maximum air volume during heating is set to be large. In addition, the LDK 2a having cooking appliances and the like is set so that the maximum air volume increases during cooling, and the maximum air volume decreases during heating.

If the maximum air volume to be sent to the room 2 such as the LDK 2a, the Japanese room 2b, the main bedroom 2c, and the children's room 2d is set at the time of cooling and heating as described above, the cooling and heating of a plurality of rooms are performed simultaneously. When the air conditioner is started up, even if the flow rate adjustment damper 6 corresponding to each room is fully opened (opened to the set maximum air volume), the air volume corresponding to the cooling and heating load of each room 2 is blown, and the cooling and heating of each room 2 is started. Becomes uniform. After the start of cooling and heating, the remote controller 45 is activated.
The temperature can be adjusted by controlling the flow rate adjusting damper 6 so that the temperature desired by the user is set in the above.

In the case of the 3LDK house 1 shown in FIG. 1, concrete set values of the maximum air flow during cooling and heating are as shown in Table 1 below, for example. In this case, the performance of the air conditioner body 4 is, for example, as follows. Heating capacity: 7.0 kW (6,020 kcal / h) Cooling capacity: 5.0 kW (4,300 kcal / h) Circulating air volume: 1,000 m ³ / h

[0016]

[Table 1]

[0017]

According to the first aspect of the present invention, as described above, a flow rate adjusting damper for adjusting an air flow rate flowing through a duct is provided in a flow path corresponding to each duct, and a maximum air flow rate sent to each room when air conditioning is started is as follows. The maximum opening of each flow control damper is adjusted so that the air flow is predetermined according to whether the room is on the south side or the north side, whether the air conditioning is cooling or heating, and whether the room area is large or small. When setting up the cooling and heating of multiple rooms at the same time, open the flow rate adjustment damper to the maximum opening corresponding to the cooling and heating load of each room, and send the air with the air volume according to each room. Since the start-up of each room can be made uniform and the cooling and heating can be performed comfortably, and the maximum opening of the flow control damper is set as described above, the start-up of each room is made uniform. , Complicated control system In which costs can be reduced without requiring.

[0018] The invention of claim 2 of the present invention is based on claim 1.
In the room on the south side, it is set so that the air volume during cooling is increased and the air volume during heating is reduced, and in the room on the north side, the air volume during cooling is reduced and the air volume during heating is increased. Therefore, it is possible to blow the air at an optimum air volume according to whether the room is on the south side or the north side, or whether the room is air-conditioning or heating, so that the cooling and heating of each room can be made uniform.

Further, the invention of claim 3 of the present invention is directed to claim 1
Alternatively, in the case where the room of the house is composed of an LDK and a plurality of individual rooms according to claim 2, when the diameter of the plurality of ducts is the same, the LDK having a large area and a large air conditioning load communicates with the air conditioner body. Two ducts that communicate with each other and the other private rooms with one duct each,
LDs with large air-conditioning load can be installed by using ducts of the same diameter, as well as pipes can be piped with the same diameter.
K can secure a sufficient amount of air flow to make the startup of cooling and heating uniform.

[Brief description of the drawings]

FIG. 1 is a piping diagram showing the entire example of an embodiment of the present invention as viewed from a plane.

FIG. 2 is a piping diagram as viewed from the front of the same.

FIG. 3 is an enlarged view showing an air conditioner main body in FIG. 2 in an enlarged manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 House 2 Room 2a LDK 2b Japanese-style room 2c Master bedroom 2d Children's room 3 Air-conditioning air outlet 4 Air-conditioner main unit 5 Duct 6 Flow rate adjustment damper

Claims (3)

[Claims] An air-conditioning air outlet in a plurality of rooms of a house and one air-conditioning apparatus main body installed at an appropriate place in the house are communicated with respective air-conditioning air supply ducts. In a central air-conditioning system that blows the conditioned air that is blown to the conditioned air outlet of each room via a duct, a flow rate adjustment damper that adjusts the amount of air flowing through each duct is provided in the flow path corresponding to each duct, and air conditioning is performed. The maximum air volume to be sent to each room at the time of startup is a predetermined air volume depending on whether the room is on the south side or the north side, whether the air conditioning is cooling or heating, and whether the room area is large or small. A central air-conditioning system comprising a setting unit for setting a maximum opening of each flow control damper. 2. In the room on the south side, the air volume for cooling is increased and the air volume for heating is reduced. In the room on the north side, the air volume for cooling is reduced and the air volume for heating is increased. The central air conditioning system according to claim 1, wherein the central air conditioning system is set as follows. 3. A case where a room in a house is composed of an LDK (living dining kitchen) and a plurality of private rooms, and an LDK having a large area and a large air conditioning load when a plurality of ducts have the same diameter is provided. 2 that communicates with the body
The one duct communicates with one duct, and the other private chambers communicate with one duct each.
Central air conditioning system as described.