JPH11141954A - Central air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a central air-conditioning system to effect proper ventilation according to the number of persons, by computing the number of persons present in a housing by the state of air-conditioning operation and reducing incurring of a heat loss. SOLUTION: A central air-conditioning system is formed such that, the air- conditioning air outlets 3 of a plurality of rooms of a housing 1, and a single air-conditioning device body 4 arranged in the proper place of the housing 1, are respectively communicated together, air is supplied by an air supply means arranged at the air conditioning device body 4 and air-conditioning air is blown off through an air conditioning air outlet 3 of each room, and air is returned to the air-conditioning device body 4. The air-conditioning device body 4 is provided with a ventilation part 31 to effect ventilation of a part of air between an outdoor place and an indoor place. A control part is provided to compute the number of persons present in the housing 1 through ON and OFF of air-conditioning of rooms and control an air flow ventilated by the ventilation part 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning system in which air-conditioning air outlets of a plurality of rooms of a house are connected to one air-conditioner main body installed at an appropriate place in the house, and air is blown by a blowing means provided in the air-conditioner main body. The present invention relates to a central air-conditioning system that blows conditioned air to an air-conditioned air outlet of each room and circulates room air back to an air-conditioning apparatus main body, and more particularly to a device that ventilates when performing central air-conditioning.

[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 in a house and one air conditioner main body installed in a suitable place in the house are communicated by a duct or the like, and air conditioning is performed. The air is blown by a blowing means provided in the apparatus main body to blow out the conditioned air to the air-conditioned air outlet of each room, and the room air is circulated back to the air conditioner main body. In addition, if only the air is circulated, the air is contaminated. Therefore, a ventilation unit is provided in the air conditioner main body to ventilate part of the air between the outside and the outside. And the ventilation part was driven according to the drive of the air conditioner main body, and ventilation with the outdoors was performed. In other words, the ventilation unit is periodically driven by a timer or the like during operation of the air conditioner body to perform ventilation, or the remote control is operated to perform ventilation.

[0003]

By the way, when air-conditioning is performed, the ventilation air volume per occupant is 30.
Although it is said to be m ³ / h · person, in the case of the above conventional example, ventilation cannot be performed according to the number of people who are currently in the house. In other words, in the case of the conventional example, since only a certain amount of ventilation is performed according to the presence or absence of operation of the air conditioner body, if the number of people in the house increases, ventilation tends to be insufficient, and the number of people in the house increases. When the amount is small, there is a problem that ventilation is excessive and thermal loss increases.

[0004] The present invention has been made in view of the above description, and determines the number of people in a house according to the operating state of air conditioning to provide appropriate ventilation and thermal ventilation. It is an object of the present invention to provide a central air-conditioning system capable of reducing a large loss.

[0005]

In order to solve the above-mentioned problems, a central air-conditioning system according to a first aspect of the present invention is provided with a plurality of air-conditioned air outlets 3 in a plurality of rooms 2 in a house 1 and an air-conditioning system installed in a proper place in the house 1. And the two air conditioning units 4
The air-conditioning device is configured such that air is blown by air blowing means provided in the air-conditioning device main body 4 to blow out the conditioned air to the air-conditioned air outlet 3 of each room 2 and to circulate the air in the room 2 back to the air-conditioning device main body 4. A ventilation unit 31 for ventilating a part of the air between the outside and the outside, a control unit for controlling the air volume ventilated by the ventilation unit 31 by determining the number of persons in the house 1 by turning on and off the air conditioning of each room 2 It is characterized by comprising. The number of people in the house 1 is determined by turning on and off the air conditioner in each room, and ventilation can be performed with the air volume according to the number of people. Nothing to do.

According to a second aspect of the present invention, there is provided a central air-conditioning system according to the first aspect, wherein the number of persons in a house is determined based on the type of the room 2 used and the combination of the rooms 2 used. Features. As a result, the number of people in the house can be more accurately determined, and appropriate ventilation can be performed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of a typical 3LDK apartment will be described as an example of a house. FIG. 3 is a plan view of the 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. 3, 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. 1 and 2, 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-style 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. In addition, an air inlet 29 is provided in each of the rooms 2 such as the LDK 2a, the Japanese room 2b, the master bedroom 2c, and the children's room 2d.
The air suction port 29 and the air-conditioning heat exchange chamber 18 are communicated with each other through an air return duct 30. 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. 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 ventilating section 31, in which an air supply chamber 32, an exhaust chamber 33, and an exhaust heat exchanger 34 are arranged. 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, the ventilation unit 31 is provided in the air conditioner main body 4 as described above. Fresh air outside is supplied through the duct 40, and dirty air in the house 1 is removed from the duct 39. The ventilation is performed so that the air is exhausted to the outside via the air conditioner. The ventilation is performed only for the number of people who are presently in the house 1 so as to perform only the airflow according to the number of people. In other words, the number of persons in the house 1 is determined by turning on and off the air conditioning of each room 2, and the amount of air ventilated by the ventilation unit 31 is controlled. At this time, the type of room 2 being used (LDK 2a, Japanese room 2b, master bedroom 2c)
Or the children's room 2d) or the number of rooms 2 in use. In this example, the house 1 is a 3LDK house, and the total number of residents is determined to be five. As described above, the number of people in the house 1 is determined by the control unit by turning on and off the air conditioning of each room 2, and the control unit controls the ventilation air volume so that the ventilation air volume according to the people in the housing 1 can be ventilated. I have. At this time, the ventilation air volume is determined as 30 m ³ / h per person. When the ventilation is performed with the ventilation air volume according to the people in the house 1 in this way, there is no danger that the ventilation will not be insufficient and the ventilation will be too much and the thermal loss will not occur. Adjustment of the ventilation air volume is performed by intermittent drive operation of the air supply blower 35 and the exhaust blower 36 and opening and closing of a damper.

Next, a method for determining the ventilation air volume will be specifically described. In this case, the house 1 is 3LDK, the total occupancy of the house 1 is 5 people, the maximum ventilation air volume is 30 m ³ / h · person × 5 people = 150 m ³ / h, and the ventilation air volume in each room 2 is shown in the following Table 1.
It is assigned as follows.

[0014]

[Table 1]

[0015] LDK 2a, Japanese-style room 2b, master bedroom 2c and
LDK2 when the air conditioning of all children's rooms 2d is on.
If there are two people in a, it is 60m^Three/ H ventilation air volume
1 each for layout, Japanese-style room 2b, master bedroom 2c and children's room 2d
30m each to find out where people are ^Three/ H ventilation air volume divided
If there are a total of 5 people in house 1, the total is 150
m^Three/ H ventilation. Indicates that the air conditioning of the LDK 2a is on, the Japanese-style room 2b, the main bedroom 2c
And when the air conditioning of the children's room 2d is off, the LDK 2a
When there are four people, it is 120m^Three/ H ventilation air volume
If there are a total of 4 people in house 1, the total is 12
0m^Three/ H ventilation. Indicates that the air conditioning of the Japanese-style room 2a is on, the LDK 2a, and the master bedroom 3c
And when the air conditioning of the children's room 2d is off,
If there are two people, it is 60m^Three/ H ventilation air volume divided
If there are a total of 2 people in the house 1
^Three/ H ventilation. Indicates that the air conditioning of the master bedroom 2c is on, the LDK 2a, the Japanese-style room 2
b, when the air conditioning of the children's room 2d is off, and the master bedroom 2b
60m when there are two people^Three/ H ventilation air volume
Calculate that there are 2 people in the house 1 and a total of 60m
^Three/ H ventilation. Indicates that the air conditioning of the LDK 2a and the Japanese-style room 2b is on, and the main bedroom 2
c and the children's room 2d are off, and LDK2
If there are two or three people in a^Three/ H ventilation wind
Allocate the amount and determine if there are 1-2 people in the Japanese room 2b
45m^Three/ H ventilation air volume, 4 people in house 1
135m to determine if there is a front and back^Three/ H ventilation rate
I care.

[0016]

According to the first aspect of the present invention, as described above, the air conditioner main body is provided with a ventilation portion for ventilating a part of the air between the outside and the outside, and the air conditioner in each room is turned on / off to be in a house. Since a control unit is provided to control the amount of air ventilated by the ventilation unit by determining the number of people, the number of people in the house is determined by turning on and off the air conditioning in each room, and it is possible to ventilate with the air volume according to the number of people. It is possible to provide appropriate ventilation so as not to be in shortage, and not to cause heat loss due to excessive ventilation.

Further, the invention of claim 2 of the present invention is directed to claim 1
In the above, the number of people in a house is determined based on the type of room used and the combination of rooms used, so that the number of people in the house can be more accurately determined and appropriate ventilation can be performed.

[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 the front.

FIG. 2 is an enlarged view of an air conditioner main body of FIG. 1;

FIG. 3 is a piping diagram viewed from the above-mentioned plane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 House 2 Room 2a LDK 2b Japanese-style room 2c Main bedroom 2d Children's room 3 Air-conditioning air outlet 4 Air-conditioning device main body 31 Ventilation part

Claims (2)

[Claims] An air-conditioning air outlet of a plurality of rooms of a house is communicated with one air-conditioning device main body installed at an appropriate position in the house, and air is blown by a blowing means provided in the air-conditioning device main body to supply conditioned air to each room. In a central air-conditioning system that circulates the air in the room back to the air-conditioner body while blowing it out to the air-conditioning air outlet of the air conditioner, the air-conditioner body is provided with a ventilator that ventilates some of the air to and from the outside. A central air-conditioning system comprising a control unit that determines the number of people in a house by turning on and off air conditioning and controls the amount of air ventilated by a ventilation unit. 2. The central air-conditioning system according to claim 1, wherein the number of persons in the house is determined based on the type of room used and the combination of the rooms used.