JPH10160198A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system where an air conditioner to perform air conditioning on the first floor side and air conditioning on the second floor side can be installed with good work execution performance without affecting a living space. SOLUTION: An indoor machine 5, ducts 24 and 25, outlet chambers 25 and 26, etc., are installed in a garret 7 on the second floor side, and each room R2, R3, etc., is supplied with conditioned air from the ceiling, and an indoor machine 3 is installed in the space 41S under the stairs on the first floor side, and also ducts 57 and 58 and outlet chambers 50 and 60 are arranged in the space 46S under the floor, and each room R5, R6, etc., is supplied with conditioned air from the floor face, and besides the effective utilization of the indoor space is performed by arranging an outside air introduction pipe 66 for ventilation, and also the space 42S under the stairs functions as a return space for air and a suction space for outside air, thus this is built as one with good work execution performance, and also the conditioned air is circulated in the room without waste, whereby an air conditioning system which can perform more confortable air conditioning is provided.

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 configured so that air conditioning of rooms on the first and second floors of a building can be efficiently performed.

[0002]

2. Description of the Related Art Conventionally, air conditioning of a plurality of rooms in a building is performed by using a separate type air conditioner having an air conditioning capability according to the size of the room, and installing each outdoor unit outdoors and each room. This was done by installing an indoor unit every time. However, this method is uneconomical because it requires the same number of separate air conditioners as the number of rooms, and also requires the installation of indoor units in each room and the refrigerant piping between the outdoor units and indoor units for each unit. Inconvenient workability, etc.
2. Description of the Related Art In recent years, a multi-type air conditioner has been proposed in which a refrigerant is distributed and supplied from one outdoor unit to an indoor unit in each room by a distribution refrigerant pipe to perform air conditioning.

[0003]

However, even in this multi-type air conditioner, the number of indoor units required is the same as the number of rooms. There is a problem that a large-sized outdoor unit having a large capacity is used to circulate the air, and a complicated refrigerant piping path is used, thereby deteriorating workability and maintenance.

Therefore, the present invention provides a harmony system in which conditioned air subjected to heat exchange in an indoor unit is sent to each room through a duct. In such a case, especially by installing indoor units and ducts in the building space that does not affect the structure of the building, it is possible to improve the workability and to achieve a good and efficient air conditioning in each room. It is intended to provide an air conditioning system.

[0005] It is another object of the present invention to provide an air conditioning system that is formed into a system that performs ventilation together with air conditioning to maintain indoor air cleanliness and provide a more comfortable living space.

[0006]

In order to achieve the above object, the present invention provides air conditioning for a room on the first floor and air conditioning for a room on the second floor by installing a compressor, a heat source side heat exchanger, and the like. Air that is performed by two refrigeration cycles dedicated to each floor configured by connecting an outdoor unit with a decompressor, a use-side heat exchanger, an air blower, and other indoor units in an annular manner by refrigerant piping. In the harmony system, an indoor unit is installed on the floor on the first floor so as to blow down the conditioned air after heat exchange by the use side heat exchanger on the first floor, and the conditioned air from the indoor unit is placed under the floor. A branch chamber for introducing and branching and discharging from a plurality of discharge ports is provided, and a conditioned air supply duct for guiding conditioned air discharged from the branch chamber to each room on the first floor side is provided,
The air-conditioning system is provided with blow-off chambers for blowing the conditioned air supplied from the respective conditioned air supply ducts upward on the floor of each room.

[0007] Further, the present invention provides an air conditioning system in which an indoor unit is installed in a closed space having a return port for indoor air.

Further, the air conditioning of the room on the first floor and the air conditioning of the room on the second floor can be performed by using an outdoor unit equipped with a compressor, a heat source side heat exchanger, etc. The refrigeration cycle dedicated to each floor is constructed by connecting an indoor unit equipped with devices and the like in an annular manner with refrigerant pipes, while providing ventilation paths by providing an outside air introduction path and indoor air exhaust path. In the air conditioning system, the indoor unit is installed on the floor on the first floor so that the conditioned air after the heat exchange by the use side heat exchanger on the first floor is blown downward, and the indoor unit is placed under the floor from the indoor unit. A branch chamber for introducing conditioned air and branching and discharging from a plurality of discharge ports is provided, and a conditioned air supply duct for guiding conditioned air discharged from the branch chamber to each room on the first floor side is provided. And each On the floor of the house, while providing blow-off chambers for blowing out the conditioned air supplied by the respective conditioned air supply ducts upward, a ventilation duct for introducing outside air is provided below the floor, and a tip of the ventilation duct is provided. Is an air conditioning system having a configuration in which the air supply port is opened to the floor of a closed space in which the indoor unit is installed.

The air conditioning system is configured so that the indoor unit is installed in a space below the stairs.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows two separate air conditioners,
It is explanatory drawing which shows the air-conditioning system of this invention which air-conditions the room on the second floor and the room on the second floor separately.

In this figure, reference numeral 1 denotes an outdoor unit for the first floor air conditioning, and 2 denotes an outdoor unit for the second floor air conditioning, both of which are equipped with a compressor, a heat source side heat exchanger and the like. Installed outdoors. Reference numeral 3 denotes a first-floor air-conditioning indoor unit connected to the first-floor air-conditioning outdoor unit 1 by a refrigerant pipe 4 disposed under the floor, and 5 denotes a second-floor air-conditioning outdoor unit 2 and a refrigerant. It is an indoor unit for air conditioning on the second floor connected by a pipe 6, and both internally have a use-side heat exchanger including a decompression device and a blower.

In the indoor unit 3 and the indoor unit 5, the conditioned air indoors is exchanged with the refrigerant in the use side heat exchanger, and the air cooled or heated by the heat exchanger is exchanged. Is returned to the conditioned room or indoors by the blower. The refrigerant pipe 6 on the second floor is drawn out of the outdoor unit 2, crawls from the wall surface of the house to the indoor unit 5, and then returns to the outdoor unit 2 along the same route.

Here, the indoor unit 5 for air conditioning on the second floor side can use the space of the attic 7 as an installation place.
It can be hidden and installed there.

On the other hand, since there is no suitable place on the first floor side where the indoor unit 3 can be easily hidden and installed like the attic 7 on the second floor, it is necessary to take measures. As one of the features of the present invention,
There is a method of installing the indoor unit 3 on the first floor side, and this point will be described later in detail.

Here, the air conditioners on the first floor and the second floor have the same configuration. As shown in FIG. 2, a compressor 10, a heat source side heat exchanger 11,
2. Compressor 1 by connecting use side heat exchangers 13 in a ring
In addition to the refrigerant circuit configuration in which the refrigerant circulates through 0,
As shown in FIG. 1, a refrigeration cycle is provided in which a heat recovery machine 14 that recovers heat from air (exhaust) exhausted from indoors to outdoors is inserted in the middle of the refrigerant pipe 4.

The heat recovery machine 14 is a single unit, but has two built-in heat recovery heat exchangers for the first and second floors, and recovers indoor air. One common exhaust fan 1 that blows heat to the heat exchanger and promotes heat exchange
8 is provided. More specifically, FIG. 14A is a heat recovery heat exchanger for the first floor, and an exhaust passage 16 provided to exhaust indoor air mainly on the first floor side through a room R7 such as a bathroom and a toilet in the corner of the first floor. It is installed inside. And
The refrigeration cycle shown in FIG. 2 in which the heat recovery heat exchanger for the first floor connects the compressor 10, the heat source side heat exchanger 11, the heat recovery heat exchanger 14A, the pressure reducing device 12, and the use side heat exchanger 13 in this order. Is formed.

Similarly, through a room R1 such as a toilet in the corner of the second floor, an exhaust path 17 provided mainly for exhausting indoor air on the second floor side has a heat recovery heat for the second floor of the heat recovery machine 14. An exchange 14B is provided.

In the refrigeration cycle having such a configuration, the heat in the indoor air exhausted by the heat exchange action of the heat recovery unit 14 is recovered, so that the evaporation capacity of the refrigeration cycle,
The condensing capacity is to be added. Although FIG. 2 shows the refrigeration cycle of the first floor air conditioner, the refrigeration cycle of the second floor air conditioner is the same. During this refrigeration cycle, the accumulator, receiver tank,
A configuration in which a strainer, a muffler, a four-way valve, and the like are provided may also be employed. Further, as the pressure reducing device, an electric expansion valve, a capillary tube, and a refrigerant flow control valve capable of adjusting the amount of refrigerant flowing to the heat utilization side heat exchanger can be used.

Further, the heat source side heat exchanger 13 in FIG.
Is for performing heat exchange between a heat source, for example, outside air and a refrigerant, and an arrow shown in the figure indicates a blower (not shown) provided in the heat source side heat exchanger 13 to promote heat exchange. ) Indicates the outside air supplied by In addition, water (drainage or the like) can be used as a heat source in addition to outside air. Similarly, arrows drawn on the heat recovery unit 14 and the use side heat exchanger 13 respectively indicate an exhaust fan (not shown) and a use side heat exchanger attached to the heat recovery heat exchanger of the heat recovery unit. Shows the outside air being supplied by a blower (not shown) for promoting heat exchange.

Next, a supply structure for supplying conditioned air obtained by heat exchange between the indoor units 3 and 5 to each room will be described. First, a description will be given of the second floor side. Reference numeral 20 designates a predetermined area in order to mainly concentrate the air in the rooms R1, R2, R3, and R4 on the second floor (a room shared with the first floor) and suck the air into the indoor unit 5. This is a suction chamber installed behind the ceiling of the room R4, and has a hollow structure inside to form an indoor air inlet. Reference numeral 21 denotes a duct for introducing the sucked indoor air into the indoor unit 5.
Contact

The air that has entered the indoor unit 5 through the duct 21 undergoes heat exchange in the use-side heat exchanger and is blown out by the blower. Reference numeral 22 denotes a blow duct, and reference numeral 23 denotes a branch chamber provided at the end of the blow duct 22 for receiving the blown conditioned air and branching and supplying the conditioned air to each of the rooms R2 and R3. It is installed in.
The branch chamber 23 also has a cavity inside like the suction chamber 20.

The conditioned air supply ducts 24 and 25 are arranged in the attic 7 so that the branch chamber 23 leads to the rooms R2 and R3 on the second floor. 26 and 27 are blowing chambers for blowing out the conditioned air sent from the conditioned air supply ducts 24 and 25 to the respective rooms R2 and R3.
It is arranged at the tip of 4, 25 and is installed behind the ceiling of each room R2, R3 with the outlet facing downward.

Therefore, the conditioned air heat exchanged in the indoor unit 5 passes through the outlet duct 22, the branch chamber 23, the respective conditioned air supply ducts 24 and 25, and the outlet chambers 26 and 27.
And each room R2, R from each blowing chamber 26, 27
3. Air is blown out from the ceiling to air-condition each room. The air blown into the rooms R2 and R3 is divided into the rooms R2 and R3.
Are connected to each other by the lower communication hole 29 and the room R2 and the room R4 are connected to each other by the lower communication hole 30. Therefore, after entering the room R4 through the communication holes 29 and 30, the suction chamber 20 Circulated so as to be sucked and returned to the indoor unit 5. In some rooms R1 such as a toilet, a part of the conditioned air blown out to the room R4 is introduced from a lower communication hole 31 communicating the room R4 and the room R1, and air conditioning is performed.

In this way, the air conditioning of the room on the second floor is performed. In the air conditioning system of the present invention, ventilation is simultaneously performed so as to take in outside air, exhaust indoor air, and circulate clean indoor air. Let me.

That is, an outside air introduction port 33 is provided at the eaves of the roof, etc., an outside air introduction pipe 34 having one end connected to the outside air introduction port 33 is arranged on the attic 7, and the other end air supply port is provided in the suction chamber 20. Connected to contact. Therefore, partial ventilation of the indoor air is performed by the exhaust path 17 and the outside air introduction pipe 34, and air conditioning with clean air is enabled. In addition, it is also possible to provide a damper in the suction chamber 20 to selectively take in outside air or indoor air, and to perform air conditioning by only outside air or only by indoor air.

Next, the conditioned air supply structure on the first floor side will be described. First, it is necessary to install the indoor unit 3 on which the heat utilization side heat exchanger 13 and the blower are mounted on the first floor side of the room. It is installed utilizing the space below 41S. Since the lower part 41S of the stairs is a moderately wide space, the installation of the indoor unit 3 is not so difficult, and since it is a closed space, the indoor unit 3 can be installed without showing it. As a result, the installation of the indoor unit 3 does not cause a loss of the living space.

In addition to the space 41S below the stairs, if there is an appropriate space inside the building, such as the space behind the article storage space, it may be installed in a closed space.

Here, the indoor unit 3 installed below the stairs 41S
In order to take indoor air into the room, an indoor air inlet 42 which is a return port for indoor air is formed above the wall surface of the stairs. Therefore, the air in the room on the first floor side mainly enters the space 41S below the stairs from the indoor air inlet 42. Therefore, the space under the stairs itself is the
Since it functions as a suction chamber like the suction chamber 20 on the floor side, there is no need to separately provide a suction chamber exclusively for indoor air on the first floor, and a second floor duct 21 for connecting the suction chamber to the indoor unit is provided. Similar ducts can be dispensed with.

As shown in FIG. 3, the indoor unit 3 incorporates a use-side heat exchanger 13 and has a return air intake 43 directed sideways, and a lower part of the upper case 3A. And a lower box 3B having a built-in air blower 44, and is installed on a floor 46 on the first floor with its outlet 45 facing downward. by this,
The conditioned air that has been heat-exchanged by the use-side heat exchanger 13d is blown downward by the blowing device 44 to the underfloor 46S.

The lower box 3B of the indoor unit 3, which incorporates the air blower 44, can change the coupling direction with respect to the upper box 3A so that the blowing direction of the conditioned air can be changed. That is, the lower box 3B has openings 48a and 48b as communication ports with the upper box 3A at two places on the side surface, and can be detachably mounted so that the openings 48a and 48b can be selectively opened or closed. A cover 49 is provided.

Therefore, in the lower case 3B shown in FIG. 3, the cover 49 on the right side is temporarily removed, the lower case 3B is turned 45 degrees counterclockwise, and the opening 48a coming on the left side is
When the cover is closed by 9, the opening 48 b which has been closed by the cover 49 is turned upward and becomes a communication port for air, and as shown in FIG. 4, the air intake 43 and the air outlet 45 are on the same side. Indoor unit that takes in air from the side and blows it out
It can be. That is, the indoor unit in this case is
This corresponds to the indoor unit 5 for air conditioning on the second floor shown in FIG.

Now, in order to supply the conditioned air heat-exchanged in the indoor unit 3 to the rooms R5, R6, R7 on the first floor and the common room R4, the above-mentioned branch chamber arranged on the attic on the second floor. 23, a branch chamber 50 similar to the conditioned air supply ducts 24 and 25 and the blowout chambers 26 and 27, the conditioned air supply ducts 57 and 58, and the blowout chambers 59 and 60.
Is installed using the space under the floor 46S.

That is, the conditioned air blown from the outlet 45 of the indoor unit 3 to the underfloor 46 through the outlet duct 55 is received and branched and discharged. 46S below the floor
Install in the space. The branch chamber 50 has a connection hole for the blowing duct 55 on the upper surface and a plurality of duct connection holes on the side surface. 57 and 58 are conditioned air supply ducts each having one end connected to each of the duct connection holes so that conditioned air discharged from the branch chamber 50 can be introduced into each of the rooms R5 and R6, and arranged in the space below the floor 46S. Have been.

Then, each conditioned air supply duct 5
7 and 58 reach the lower positions of the respective rooms R5 and R6, and blowout chambers 59 and 60 are provided at the ends thereof. The inside of each of the blowing chambers 59 and 60 is also a cavity,
R6 is provided vertically to penetrate the floor 46 downward,
The outlets of the rooms R5 and R6 face the floor so that the conditioned air is blown from below.

Therefore, the conditioned air that has undergone heat exchange in the indoor unit 3 communicates with the outlet duct 55, the branch chamber 50, and the respective conditioned air supply ducts 57, 58, and the outlet chambers 59, 60.
To each room R5, R from each blowing chamber 59, 60
6 is blown out from below to perform air conditioning of each room R5, R6. The air blown into the rooms R5 and R6 is
5 and the room R6 are connected to each other by the lower communication hole 62, and the room R5 and the room R4 are connected to each other by the lower communication hole 63. Therefore, after exiting to the room R4 through the communication holes 62 and 63, The air is circulated so as to be sucked into the suction chamber 20 and returned to the indoor unit 5. Furthermore, the air is sucked into the space below the stairs 41S from the air inlet 42 of the stairs again and circulated so as to return to the indoor unit 3. Some rooms R7 such as bathrooms and toilets on the first floor have some of the conditioned air blown out into room R4.
The air is conditioned by being introduced from the lower communication hole 64 connecting the room R4 and the room R7.

Further, an outside air introduction pipe 66 is provided utilizing the space under the floor 41S so that the outside air can be taken in and ventilated even on the first floor side. The outside air introduction pipe 66 is provided with the outside air intake 67 at the lower part of the outer wall of the building and communicates with the outside.
It opens to the floor to open into the space.

Therefore, a part of the indoor air is ventilated by the exhaust passage 16 and the outside air introducing pipe 66, thereby enabling air conditioning with clean air.

In the air-conditioning system configured as described above, the rooms R1, R2, R3R4, etc. on the second floor are divided into five indoor units installed on the attic 7, a branch chamber 23 and the branch chamber 23, and are arranged. Supply duct 24,
A sufficient amount of cold air or warm air is supplied from the ceiling surface of each room by the blowout chambers 26 and 27 for air conditioning by 25 or the like, while the room on the first floor side is a room installed in the space under the floor 46S on the first floor. Machine 3 and branch chamber 50 and supply duct 5 branched and arranged at branch chamber 503.
A sufficient amount of cool air or warm air is supplied from the floor surface of each room by the blowout chambers 59 and 60 by 7, 58 and the like, and air conditioning is performed. Therefore, each room can be air-conditioned efficiently without unevenness, and can be air-conditioned without wasting the supplied conditioned air.

In addition, attic 7, under floor 46S and under stairs 4
The indoor units 3, 5 and the supply ducts 24, 25, 57, 58, etc. are installed using the internal space of the building internal structure such as 1S, so that the indoor space can be used effectively and the air conditioner is installed. Can be installed well.

[0041]

As described above, according to the first aspect of the present invention, in a two-story house, a refrigeration cycle apparatus for air-conditioning a room on the second floor can be installed by using an attic. The location of the refrigeration cycle device for air-conditioning the room on the first floor side poses a problem. In the present invention, however, attention is paid to the space under the floor, and the conditioned air is blown downward from the indoor unit installed on the floor. Is supplied through a conditioned air branching / discharging branch chamber provided under the floor and a supply duct leading to each room, and a sufficient amount of conditioned air is supplied to the blowout chamber provided on the floor of each room to perform air conditioning. It is assumed. Therefore, the conditioned air supply system on the first floor side can be relatively easily constructed by effectively using the indoor space, ie, the use under the floor, and the workability can be improved.

According to the second aspect of the present invention, by installing the indoor unit in a closed space having a return port for indoor air, the closed space can be used also as an inlet space for return air, and at the same time, disturbance can be prevented. Return air can be quietly stayed in this closed space without being affected, and as a result, the suction performance to the indoor unit can be improved,
Smooth circulating air can be expected.

Further, according to the third aspect of the present invention, in order to improve the cleanliness of the conditioned air circulating indoors, an outside air introduction duct for taking in outside air can be easily installed using the underfloor. And by opening the air supply port at the tip of the duct for introducing outside air to the floor surface and communicating with the closed space in which the indoor unit is housed, this outdoor air is also sucked into the indoor unit immediately. Then, it can be supplied to the room via the supply duct, and the ventilation action can be performed efficiently, so that a more comfortable living space can be provided.

According to the fourth aspect of the present invention, if the indoor unit is installed in a space below the stairs, the space below the stairs is considerably large, so that the workability of the installation can be improved. It is convenient in terms of maintainability. In addition, the indoor units are hidden, so that the living room does not feel uncomfortable, and the well-being of the living space is maintained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an air conditioning system for air conditioning a two-story house according to the present invention.

FIG. 2 is a schematic diagram of a refrigeration cycle of the air conditioning system.

FIG. 3 is a vertical sectional side view schematically showing an internal structure of an indoor unit configured by connecting and assembling an upper box containing a use-side heat exchanger and a lower box containing a blower.

FIG. 4 is a vertical sectional side view schematically showing an internal structure of the indoor unit in a case where a blowing direction can be changed by changing a connecting direction of the upper case and the lower case.

[Explanation of symbols]

 1, 2 outdoor unit 3, 5 indoor unit 4, 6 refrigerant pipe 7 attic 14 heat recovery unit 14A, 14B heat recovery heat exchanger 23, 50 branch chamber 24, 25, 57, 58 conditioned air supply duct 26, 27, 59 , 60 outlet chamber 34, 36 outside air inlet pipe 40 stairs 41S down stairs 42 indoor air inlet 46S under floor R1, R2, R3, R4, R5, R6, R7 room

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Shigeo Desk 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Shinji Kaneko 2-2-5 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (4)

[Claims] An air conditioner for a room on the first floor and an air conditioner for a room on the second floor, an outdoor unit equipped with a compressor and a heat source side heat exchanger, a decompression device, a use side heat exchanger, and air blowing In an air conditioning system configured to perform two dedicated refrigeration cycles for each floor by connecting an indoor unit equipped with devices etc. in an annular manner with refrigerant piping, heat exchange by the first-floor use-side heat exchanger An indoor unit is installed on the floor on the first floor side to blow out the conditioned air afterwards,
A branch chamber for introducing conditioned air from the indoor unit and branching and discharging from the plurality of discharge ports is provided under the floor, and the conditioned air discharged from the branch chamber is guided to each room on the first floor side. An air conditioning system, wherein a conditioned air supply duct is provided, and a blowout chamber for blowing out the conditioned air supplied by each of the conditioned air supply ducts upward is provided on the floor of each room. . 2. The air conditioning system according to claim 1, wherein said indoor unit is installed in a closed space having a return port for indoor air. 3. An air conditioner for a room on the first floor and an air conditioner for a room on the second floor, an outdoor unit equipped with a compressor, a heat source side heat exchanger, etc. The refrigeration cycle dedicated to each floor is constructed by connecting an indoor unit equipped with devices and the like in an annular manner with refrigerant pipes, while providing ventilation paths by providing an outside air introduction path and indoor air exhaust path. In the air conditioning system, the indoor unit is installed on the floor on the first floor side so that the conditioned air after the heat exchange by the first floor use side heat exchanger is blown down,
A branch chamber for introducing conditioned air from the indoor unit and branching and discharging from the plurality of discharge ports is provided under the floor, and the conditioned air discharged from the branch chamber is guided to each room on the first floor side. A conditioned air supply duct is arranged, and on the floor surface of each room, a blowout chamber for blowing out the conditioned air supplied by each of the conditioned air supply ducts upward is provided, while a ventilation duct for introducing outside air is provided. An air conditioning system which is arranged under the floor and has an air supply opening at a tip end of the ventilation duct opened to a floor surface of a closed space in which the indoor unit is installed. 4. The apparatus according to claim 1, wherein the indoor unit is installed in a space below the stairs.
Item 4. The air conditioning system according to Item 3.