JPH024342Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a residential heat exchanger that can be installed efficiently and inexpensively by installing the indoor heat exchanger in the ceiling of the non-occupied zone. It relates to air conditioning systems.

``Conventional technology'' For a time, the mainstream method for heating and cooling all the rooms in a house was to install a heat source at a desired location in the house, and then transfer the heat from this heat source to the indoor side of a fan coil unit installed in each room. A central air conditioning system configured to be connected to a heat exchanger. However, this type of central air conditioning system has the drawback of requiring long pipes to be installed inside the house to transport hot and cold water, which requires large-scale piping construction and high initial costs. , to air-condition even unoccupied rooms.
It was an uneconomical system. Therefore, in recent years,
BACKGROUND ART A heating and cooling system for a private room is provided in which an outdoor heat exchanger is connected to an indoor heat exchanger provided in each room.

``Problem that the invention aims to solve'' This type of heating and cooling system for individual rooms can freely cool and heat each room by adjusting the output of each indoor heat exchanger as necessary. Although this makes it possible to perform efficient heating and cooling operations, there is a problem in that the equipment cost is considerably high because it is necessary to provide an indoor heat exchanger for each room. In addition, each indoor heat exchanger used in the air conditioning system for individual rooms needs to be installed with a capacity slightly larger than that suitable for each room so that each room can be heated and cooled with plenty of room. However, this means that when converted to the capacity of the entire house, equipment with a much larger capacity than is required for the house will be installed, making the contract power for the house unnecessarily large.
This poses problems such as the need to provide a dedicated electric circuit for the heating and cooling system, making it difficult to achieve heating and cooling in all rooms.

In addition, as a whole room heating and cooling system that is popular in other countries, a heat source and a large blower are installed in a machine room located in a basement, etc., and hot and cold air is distributed to each room using ducts that are piped to all rooms in the house. There is a so-called air-handling type all-room heating and cooling system configured to blow air into each room, but with this system, not only is it difficult to precisely control the temperature in each room, but air is blown to all rooms. The large blower used for this purpose consumes a large amount of electricity, making it uneconomical, and the blower also makes a lot of noise, making it unsuitable for use in domestic households.

"Purpose of the invention" This invention was made in view of the above circumstances.
To provide an air conditioning system that has low equipment cost and can efficiently cool and heat each room.

``Means for Solving the Problems'' In order to solve the above-mentioned problems, the present invention provides an indoor heat exchanger that is connected to an outdoor heat exchanger, is connected to a blower, and has an air outlet and an air intake. is installed in the ceiling of non-residential zones such as hallways and halls,
An intake/exhaust unit is installed above the entrance/exit doors of multiple living rooms on both sides of this indoor heat exchanger, and the air intake and exhaust ports of the indoor heat exchanger are connected to the air supply duct and intake duct in this intake/exhaust unit. This was communicated by.

``Operation'' A single indoor heat exchanger can cool and heat multiple rooms, and the distance between the ducts connecting the indoor heat exchanger and each room can be minimized.
In addition to reducing equipment costs and improving workability, the indoor heat exchanger can be installed so that it is not noticeable to residents, and the intake and exhaust units can be installed individually above the door in a transom-like manner. All areas where leaks are a problem, such as drain piping and refrigerant piping, can be installed in a non-occupied zone.

Embodiment FIGS. 1 to 4 show an example in which an air conditioning system according to an embodiment of the present invention is applied to a two-story house A.

In Figure 1, house A has a total of four living rooms 3, 4, 5, and 6, two on each side with a hallway (non-living zone) 2 in between, on the first floor, and a hallway (non-living zone) on the second floor. There are a total of four living rooms 8, 9, 10, and 11, two on the left and right, sandwiching zone 7, and the entrances and exits of living rooms 3 and 5, which face each other across corridor 2, and corridor 2.
Entrances and exits of rooms 4 and 6 facing each other with
The entrances and exits of living rooms 8 and 10, which face each other across the corridor 7, and the entrances and exits of living rooms 9, 11, which face each other across the corridor 7, are formed to face each other, and a door 12 is installed at each entrance. A transom-shaped intake/exhaust unit 13 is installed above the transom 12.

A plenum chamber (indoor heat exchanger) 15 is installed in the ceiling of each of the hallways 2 and 7 above between the intake and exhaust units 13 and 13 facing each other across the hallways 2 and 7. , a plenum chamber 15 in the attic on the first floor connects a connecting pipe 17 to an outdoor heat exchanger 16 installed under the floor in the hallway 2 on the first floor.
The plenum chamber 15 in the attic on the second floor is connected to the outdoor heat exchanger 18 installed under the floor of the living room 3 on the first floor by connecting pipes 19 and 1.
9. Note that each of these outdoor heat exchangers 16 and 18 has a capacity of, for example,
High-speed operation of the internal compressor,
"Strong", "Medium", depending on medium speed driving and low speed driving.
It can be freely switched between 3 levels of "weak".

As shown in FIG. 2, each plenum chamber 15 includes a casing 20 having a polygonal planar shape and a heat exchanger 2 provided inside the casing 20.
The main components are a blower 1A and a blower 21B. On one side of the casing 20, an air outlet 22,
23 is formed, and intake ports 24, 25 are formed on the other side.
is formed. The heat exchanger 21A is a heat medium transfer connecting pipe 1 connected to the outdoor heat exchanger 16.
7 is connected to a heat medium transfer connecting pipe 19 connected to an outdoor heat exchanger 18.

The blower 21B is provided inside the casing 20 between the heat exchanger 21A and the intake ports 24 and 25, and includes two fans 27 and 28.
The fan 27 takes in air from the intake port 24 and blows the air to the outside via the heat exchanger 21A and the air outlet 22, and the fan 28 takes in air from the intake port 25. , heat exchanger 21
Air can be blown outside through A and the air outlet 23, and the air blowing capacity is, for example, "strong",
It can be freely switched between 3 levels: "medium" and "weak".

The intake/exhaust unit 13 is shown in FIGS.
As shown in the figure, above the door 12 of each living room, its back part faces toward the hallway 2 (or hallway 7), and its front part is exposed to the living room, and
It is a box-shaped item installed with its upper part exposed in the attic of hallway 2 (or in the attic of hallway 7).

This intake/exhaust unit 13 consists of a hollow box 30
and the partition body 3 provided inside this box body 30.
1, and an intake hole 32 and a discharge hole 33 which are adjacent to each other on the left and right and open to the ceiling are formed in the upper part of the back side of the box 30. The partition body 31
has a U-shaped plate shape in front consisting of a bottom plate 34 and side plates 35, 35, and is provided so as to be movable in the left-right direction along a rail member (not shown) installed in parallel inside the box body 30. , when the bottom plate 34 of the partition body 31 is positioned below the intake hole 32 as shown in FIG.
and the discharge hole 33, the interior of the box body 30 is divided into an intake zone 36 and an exhaust zone 3.
7, and when the bottom plate 34 is positioned below the discharge hole 33 as shown in FIG. 4, the other side plate 35 is positioned between the intake hole 32 and the discharge hole 33. The inside of the box body 30 is divided into an intake zone 38 and an exhaust zone 39. Note that the partition body 31 may have a rectangular frame shape or other shapes.

A through hole is formed on the indoor side surface of the box body 30 for communicating the intake and exhaust zones 36, 37, 38, and 39 into the room, and a garari 50 is attached to each through hole. There is. Kono Garari 50
In order to prevent the short circuit phenomenon in which air exhausted from the exhaust zone 37 (or exhaust zone 39) directly flows into the intake zone 36 (or intake zone 37) to occur, the air blowing direction is adjusted to reduce the air in the living room. This ensures that the air is drawn into the intake zones 36, 37.

Note that inside the box body 30, the partition body 31
can be installed in two ways, the position shown in Figure 3 and the position shown in Figure 4, but this
When installing the intake/exhaust unit 13 in rooms 6, 10, and 11, the partition body 31 is positioned as shown in FIG.
3, by locating the partition body 31 as shown in FIG. 4, it is possible to install it regardless of whether the intake hole 32 and the discharge hole 33 are located on the left or right side. It is.

In addition, in the plenum chamber 15, the air outlet 22 is connected to the air duct 40 through the outlet hole 33 of the intake/exhaust unit 13 on one side of the plenum chamber 15.
In addition, the ventilation ports 23 are connected to the discharge holes 33 of the intake/exhaust unit 13 on the other side by air ducts 41, and the intake ports 24 are connected to the intake/exhaust unit 13 on the other side. The intake port 25 is connected to the intake hole 32 of the intake/exhaust unit 13 on the other side by an intake duct 42, and the intake port 25 is connected to the intake hole 32 of the intake/exhaust unit 13 on the other side by an intake duct 43.

Further, an opening/closing damper 45 is provided inside each intake hole 32 and inside each discharge hole 33 of each intake/exhaust unit 13, and the opening/closing damper 45 is provided on the back side of each intake/exhaust unit 13. An opening/closing motor 46 that opens and closes the intake hole 32 and the discharge hole 33 is attached, and each of these opening/closing motors 46
is operated by an operation switch (not shown) provided on the indoor side of the intake/exhaust unit 13, and the intake hole 32 and the discharge port 33 can be opened and closed from the indoor side by this operation switch.

Next, the operation of the heating and cooling system configured as described above will be explained.

Living room 3, 4, 5, 6 or living room 8, 9, 1
If air conditioning becomes necessary on 0.11,
Outdoor heat exchanger 16 (or outdoor heat exchanger 1
8) and the plenum chamber 15... are operated, and the intake hole 32 and the discharge hole 33 are opened by operating the operation switch of the intake/exhaust unit 13 of the room that requires air conditioning. With this operation, the plenum chamber 15
The air blower 21B blows the air inside the living room between the intake hole 32 and the intake duct 43 (or intake duct 42).
into the chassis 20 through the heat exchanger 21
A, heat exchange is carried out, and the air is returned to the room via the air supply duct 41 (or air supply duct 40) and the discharge hole 33 to air-condition the room. During this air conditioning, if the room does not require air conditioning, the operation switch of the intake/exhaust unit 13 of the room may be used to close the opening/closing damper 45 to close the intake hole 32 and the discharge hole 33. This operation eliminates the need to air-condition rooms that do not require air-conditioning, making it possible to perform economical air-conditioning operations.

In addition, in the case where the air conditioning target is living room 3 and living room 5, and the temperature of living room 3 is 15 degrees Celsius and the temperature of living room 5 is 10 degrees Celsius during the cold season, heating of living rooms 3 and 5 is explained below. An example of the operation of this embodiment will be explained based on FIG. 5.

In this case, first, at the beginning of operation, the blowing capacity of the blower 21B of the plenum chamber 15 is set to "strong".
The compressors of the outdoor heat exchanger 16 are operated at a high rotation speed, and each opening/closing damper 4 of the living room 3 is activated.
5, 45 fully open, each opening/closing damper 45 of the living room 5,
45 is fully opened. With this operation, living room 3,
5 rises as shown by the solid line and dotted line in FIG. 'Medium' air blowing capacity
Then, the compressors of the outdoor heat exchanger 16 are operated at medium speed, and the opening/closing dampers 45, 45 of the living room 3 are brought into a half-open state, and the opening/closing dampers 45, 45 of the living room 5 are brought into a fully open state. . In this state, living room 3 is heated to the extent that the room temperature is maintained, and the room temperature of living room 3 is maintained.
Room 5 is heated to raise its room temperature.
The temperature increases as shown by the dotted line in FIG. Next, when the temperature of the living room 5 reaches approximately 20°C, the blowing capacity of the blower 21B of the plenum chamber 15 is set to "weak" and the rotation speed of the compressor of the outdoor heat exchanger 16 is set to low speed, respectively. Each opening/closing damper 45 of the rooms 3 and 5 is fully opened.
By this operation, both living rooms 3 and 5 are heated to a state where the room temperature is maintained. Note that, of course, if there is no need for air conditioning, each opening/closing damper 45 in the room may be closed.

If living rooms 3 and 5 are heated by the above operations, after the temperature of living room 3 reaches 20℃,
Since heat other than the amount of heat necessary to maintain the temperature of the living room 3 can be prevented from being sent to the living room 3, it is possible to supply each living room 3 and 5 with the amount of heat that is needed. The plenum chamber 15 and the outdoor heat exchanger 16 can be operated efficiently without energy loss.

The detailed temperature control described above can be achieved by connecting the blower 21B, the outdoor heat exchanger 16, and the opening/closing motor 46 to a required control device, and instructing this control device to perform operating procedures with little energy loss according to the temperature of each room. is stored in memory, and this control device switches the blowing capacity of the blower 21B, switches the rotation speed of the compressors of the outdoor heat exchangers 16 and 18, and controls the open state of each opening/closing damper 45... You can do it automatically if you do this. Note that the blower 21B and the outdoor heat exchanger 16,1
8 may have a configuration in which the output can be adjusted steplessly,
In that case, by setting the memory contents of the control device to correspond to more detailed temperature changes, even more detailed air conditioning operations can be performed.

Further, the plenum chamber 15 is connected to the corridors 2 and 7.
Because the plenum chamber 15 is installed behind the ceiling, it is possible that the ceiling height of hallways 2 and 7 will be slightly lower due to the thickness of the plenum chamber 15. Since it is a non-residential zone, there is little impact on the lives of residents. In this regard, if a plenum chamber is installed in the attic of a living room, the reduction in ceiling height is undesirable because it gives a feeling of pressure to the occupants. Note that the intake/exhaust unit 13 has a structure in which only the partition body 31 is provided inside, so it can be easily made thin, and it is located above the door 12 and also serves as a transom.
Since the installation space can be used in the conventional transom installation space, it fits comfortably and can be easily installed in a living room.

Furthermore, in the air conditioning system having the above configuration, the piping construction for the air supply ducts 40, 41 and the intake ducts 42, 43 is carried out from the ceiling of the hallways 2, 7 to the door 12 of the living room.
Because it is better to do this up to the top of the house, the piping distance is shorter than in conventional central air conditioning systems, which require duct piping construction throughout the entire house, making piping construction such as insulation treatment easier. Additionally, when the plenum chamber 15 is installed in a non-occupied zone such as the attic, it has the feature that the areas where leaks such as drain piping and refrigerant piping are a problem can be installed together in the non-occupied zone. It is easier to discharge the drain water than if it were installed, and it is an advantageous configuration in terms of maintenance.Furthermore, since the installation location is far from the living room, the noise of the blower 21B does not bother the living room. There is. In this regard, in conventional systems that accommodate individual rooms, if a plenum chamber is installed in the living room, there is a risk that drain water may be discharged into the room, but this problem does not occur if the above configuration is adopted. .

In the above-described configuration, if the capacity of the plenum chamber 15 is sufficiently large, it may be connected to three or more living rooms. Considering that in recent years houses with excellent insulation treatment have a heating load of about 1,000 Kcal/H for an 8-tatami room, this means that the plenum chamber 15 has a heating capacity of about 2,500 to 3,000 Kcal/H. If you use 2~
This is because it becomes possible to connect to the third room, and of course
If the plenum chamber 15 has a heating capacity greater than 3000 Kcal/H, it can be connected to three or more living rooms. The blower 21B may be installed outside the plenum chamber 15, such as inside the air supply ducts 40, 41, inside the intake ducts 42, 43, or inside the intake/exhaust unit 13, but this should be taken into consideration from the noise standpoint. Therefore, it is preferable that the air blower 21B is not provided in the intake/exhaust unit 13. Furthermore, since the intake/exhaust unit 13 does not have any special device inside, it is easy to reduce the thickness of the intake/exhaust unit 13. Furthermore, the plenum chamber 15 may be installed not only in the ceilings of the hallways 2 and 7 but also in the ceilings of entrances, halls, and the like.

On the other hand, inside the plenum chamber 15, the openings of the ventilation ports 22 and 23 and the intake ports 24 and 2
An opening/closing damper may be provided in each of the openings of the ventilation openings 22 and 23.
By providing a switching damper for closing either one of the air intake ports 2 or 23, and further providing a switching damper for closing either one of the air intake ports 24, 25 between the air intake ports 24, 25. , to prevent the air from the living room that does not require air conditioning from being drawn into the plenum chamber 15 to prevent negative pressure in the living room that does not require air conditioning, and to prevent air from being conveyed to the duct on the side of the living room that does not require air conditioning. It can also reduce energy loss.

"Effects of the invention" As explained above, the present invention installs an indoor heat exchanger that is connected to an outdoor heat exchanger, is connected to a blower, and has an air outlet and an air intake in the ceiling of a non-occupied zone. However, each of the air outlet and air intake of the indoor heat exchanger is connected to each of the air intake and exhaust units installed above the door of each room through an air supply duct and an air intake duct. A single indoor heat exchanger can air-condition multiple rooms, reducing equipment costs and providing efficient air-conditioning operations. In addition, because the indoor heat exchanger is installed in the ceiling of the non-occupied zone, maintenance of the indoor heat exchanger is easier compared to when it is installed inside a living room, and the noise generated by the indoor heat exchanger is Since almost no noise is transmitted to the living room, it is possible to air-condition the living room with less noise. Furthermore, the distance between the non-occupied zone and the occupied room is the piping distance of each duct, which is shorter than the piping distance of conventional central air conditioning systems, making piping construction easier. Also plays. The intake/exhaust unit installed above the door does not have any special equipment inside and can be made thin, and since it is located above the door and also serves as a transom, it can be installed comfortably in a living room. Further, the intake/exhaust unit can be installed above the door using the space for installing a conventional transom in the same manner as the conventional transom installation procedure, and the installation work is easy.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a perspective view showing the overall system configuration, Figure 2 is a sectional view showing a blower installed in a non-occupied space, Fig. 3 is a partially cutaway perspective view of the intake/exhaust unit, Fig. 4 is a perspective view showing another state of the intake/exhaust unit, and Fig. 5 is an efficient It is a diagram for explaining heating operation. 2, 7... Corridor (non-occupied zone), 3, 4, 5,
6, 8, 9, 10, 11... Living room, 13... Intake/exhaust unit, 15... Plenum chamber (indoor heat exchanger), 16... Outdoor heat exchanger, 21A...
...Heat exchanger, 21B...Blower, 22, 23...
Ventilation port, 24, 25... Intake port, 40, 41...
Air supply duct, 42, 43...Intake duct.

Claims (1)

[Scope of utility model registration request] An indoor heat exchanger connected to the outdoor heat exchanger, connected to a blower, and having an air outlet and an intake port is installed in the ceiling of a non-occupied zone between a plurality of facing rooms; Above the entrance/exit door of each of the plurality of rooms on both sides of the heat exchanger, a transom-like thin box-shaped intake/exhaust unit is installed with its upper part exposed to the ceiling of the non-occupancy zone. A residential air conditioning system characterized in that the air outlet and air intake of the inner heat exchanger are each connected to the upper part of the intake/exhaust unit by an air supply duct and an air intake duct, and each communicates with a living room.