JPH0752027B2 - Air conditioner - Google Patents

Description

Description: [Industrial application] The present invention relates to an air conditioner for air conditioning in a building.

[Prior Art] In recent years, a centralized air conditioner called so-called central heating, which is shared by many indoor units with one outdoor unit, has been used. This is to cool and heat each room individually by flowing a refrigerant set to a predetermined temperature condition from one outdoor unit to an indoor unit installed in each room of the building through a pipe. .

However, such central heating basically performs heat exchange through a refrigerant, merely performs cooling and heating, and does not ventilate the room at all. Therefore, problems such as indoor air pollution and dew condensation occur.

In addition, it is necessary to secure a space for installing the indoor unit in each room, and avoid complicated work when installing these and installing piping for the refrigerant that connects the indoor unit and the outdoor unit. However, the reality is that we have no choice but to leave it to a skilled professional.

Therefore, the present applicant has previously proposed an integrated centralized air conditioning system that enables simple on-site piping construction and centralized air conditioning including air conditioning and ventilation (Japanese Patent Application No. 1-109999).

This integrated centralized air conditioning system is
An air supply duct that supplies air to each room of the building, and an exhaust duct that exhausts the air inside the building to the outside are provided, and the outside of the building sucks the air inside the building from the exhaust duct. The air conditioner is provided with cooling and heating and ventilation, and sends out conditioned air conditioned in a predetermined state by the cooling and heating and ventilation into the air supply duct.

As shown in FIGS. 4 and 5, this air conditioner has upper ends to which respective base end portions of the air supply duct 1 and the exhaust duct 2 are connected, and the inside of Has an air circulation path 3 that circulates a U-shape from the exhaust duct 2 side to the air supply duct 1 side.
An air blower unit 4 that takes in air into the air circulation path 3 from the above and sends it out into the air supply duct 1, and a heat source unit 5 that cools and heats the air passing through the air circulation path 3.
An air conditioner 7 including a ventilation unit 6 that ventilates the air from the outside air, and an outdoor unit 8 that is disposed outside the air machine 7 and supplies a cooling / heating refrigerant to the heat source unit 5.
And have.

The blower unit 4 has a fan 9 for taking in the air in the building into the air conditioner 7 through the exhaust duct 2.
, And a fan 10 for supplying the air in the air conditioner 7 to the building through the air supply duct 1 are provided.

The heat source unit 5 is provided with a heat exchanger 11. The heat exchanger 11 is connected to the outdoor unit 8 through a pipe 12, and a cooling / heating refrigerant is circulated between the heat exchanger 11 and the outdoor unit 8 so that the air passing through the heat exchanger 11 has a predetermined temperature. It is adjusted to the temperature.

A heat exchange type ventilation fan 13 is used for the ventilation unit 6. Specifically, this one includes an intake passage 14 for taking in air from the outside, an exhaust passage 15 for exhausting unnecessary air inside, a fan 16 for sucking and exhausting the air, and an intake passage 14. The exhaust passage 15 and the heat exchanging portion 17 are provided at positions intersecting with each other and exchange heat between the two.

[Problems to be Solved by the Invention] By the way, in the conventional integrated centralized air conditioning unit, as described above, two blower fans are provided in the blower unit and one fan is provided in the ventilation unit. Therefore, when the air conditioner is operated to perform air conditioning including heating / cooling and ventilation on the air in the building, it is necessary to operate all of these fans at the same time. Therefore, there is a problem that the energy required to operate each fan is large and it is uneconomical.

Further, since the plurality of fans rotate simultaneously in this way, noise increases, and vibrations due to the rotation of the fans are easily transmitted to the inside of the building. Therefore, there is also an inconvenience that it makes people in the building uncomfortable.

[Means for Solving the Problems] In the present invention, an air supply duct for supplying air to each room of a building is connected to an upper part, and an exhaust duct for exhausting air from each room is connected to a lower part, In addition, a heat source unit that circulates air from the exhaust duct side to the air supply duct side and cools and heats the air, and an air conditioner that has a ventilation unit that ventilates the air are provided inside. In the air conditioner, the ventilation unit has an intake passage for taking in outside air, an exhaust passage for exhausting unnecessary air, and a heat exchange section for exchanging heat between the intake passage and the exhaust passage. A heat exchange type ventilation device is provided, a fan that sends air from the heat source unit side to the ventilation unit side is installed between the ventilation unit and the heat source unit, and the air supply side is provided on the blow side of the fan. Flow path communicating with the air duct And a flow path communicating with an exhaust passage of the heat exchange type ventilation device, and a flow path communicating with an intake passage of the heat exchange type ventilation device is provided on a suction side of the fan. And

[Operation] According to the present invention, all the intake and exhaust of air from the building to the air conditioner and the intake and exhaust of outside air from the outside to the heat exchange type ventilation device are performed by one fan provided in the air conditioner. It is possible to reduce the unpleasant phenomena such as noise and vibration due to the rotation of the fan by collectively performing the operations.

[Examples] Hereinafter, the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an example of an integrated centralized air conditioning system using the air conditioner of the present invention.

In FIG. 1, a building 20 as a house is provided with a corridor 21 that blocks the building 20 on the first floor and the second floor, and a plurality of rooms 22, 22 arranged on both sides thereof. The first floor and the second floor are partitioned by a second floor panel 23, and an air supply duct 24 is arranged inside the second floor panel 23. The air supply duct 24 is a panel unit type main duct 25 disposed substantially in the center of the second floor panel 23.
And a panel unit type sub-duct 26, 2 which is arranged by branching from both sides of the main duct 25 into a branch leading to each room.
It consists of 6 ... At the tip of the sub-ducts 26, 26 ... (the end opposite to the side where the main duct 25 is joined), there is a hole that opens to each room 22, 22 ... on the first or second floor of the building 20. The air supply ports 27, 27 are provided for supplying air to each room. Also, the main duct 25
The base end of is connected to the upper part of the air conditioner described later.

In addition, a panel-type or hose-type exhaust duct 29 is provided inside the first-floor panel 28, and its tip end is opened in an unobtrusive area near the first-floor (a space under the stairs in FIG. 1). It is arranged. The exhaust duct 29 has a tip end serving as an exhaust port 30 for sucking and exhausting the air of the entire building, and a base end portion thereof is connected to a lower portion of an air conditioner described later.

Further, a pedestal 31 is installed outside the building 20 as a house so as to extend along the outer wall surface of the building 20 with a predetermined gap left therebetween. The pedestal 31 is partitioned into several stages in the vertical direction (two stages in FIG. 1), and each device constituting the air conditioner 32 of this embodiment is installed in each stage.

An air conditioner 33 described later is mounted on the upper stage 31a of the gantry 31, and an outdoor unit 34 described later is mounted on the lower stage 31b. The outdoor unit 34 is installed in the front half of the lower stage 31b of the gantry 31, and in the rear half thereof, the base end of the exhaust duct 29 extending outside from the side near the first floor of the building 20. The end on the side of the building is spaced apart from the outdoor unit 34 by a predetermined distance, and the building
It extends upward along the outer wall of 20 and is connected to the lower part of the air conditioner 33 mounted on the upper stage 31a of the gantry 31.

As shown in FIGS. 2 and 3, the air conditioner 33 has a lower end to which a base end portion of the exhaust duct 29 is connected and an upper portion to which the main air supply duct 24 is connected. duct
A base end portion of 25 is connected, and a lower heat source unit 35 and an upper ventilation unit 36 are provided inside thereof.

Inside the heat source unit 35, a heat exchanger 37 for adjusting the air sent from the exhaust duct 29 to a predetermined temperature is provided. The heat exchanger 37 is connected to the outdoor unit 34 arranged below the air conditioner 33 via a pipe 38.

The outdoor unit 34 is equivalent to a so-called heat pump type air conditioner, and can circulate a refrigerant between the heat exchanger 37 and the heat exchanger 37 through a pipe 38.
In the heat exchanger 37, the temperature of the air passing through the heat exchanger 37 is adjusted by the heat of the refrigerant supplied from the outdoor unit 34, and the air is heated and cooled as desired.

Further, the ventilation unit 36 is provided on the upper part of the heat source unit 35, and on the upper part thereof, a heat exchange type ventilation device.
39 are provided.

The heat exchange type ventilation device 39 includes an intake passage 40 for taking in fresh air from the outside, an exhaust passage 41 for exhausting unnecessary air inside, and the intake passage 40 and the exhaust passage 41 intersect with each other. A heat exchange section 42 provided at a position for exchanging heat between the two.
And is equivalent to the one in which a fan in a normal heat exchange type ventilation fan is omitted. One end of the intake passage 40 is provided at the side portion of the heat exchange type ventilation device 39 so as to open to the outside, and an outside air intake 40a for taking in outside air.
, And the other end communicates with a pipe (flow path) described later provided in the ventilation unit 36. Also the exhaust passage 41
Is such that one end thereof communicates with a pipe (flow path) described later provided in the ventilation unit 36, and the other end is opened to the outside on the side portion of the heat exchange type ventilation device 39. It is provided and communicates with an exhaust port 41a for exhausting unnecessary air to the outside.

In addition, the lower part of the ventilation unit 36, that is, the ventilation unit 36
Between the heat source unit 35 and the heat source unit 35, a fan 43 that blows air from the heat source unit 35 above the ventilation unit 36 is provided.

On the outlet side of the fan 43, in order to send the air blown upward by the fan 39 through the air unit 36 to the air supply duct 24 connected to the upper portion of the ventilation unit 36, An exhaust pipe (flow path) 44 communicating with the air supply duct 24 is connected. The exhaust pipe (flow path) 44 is branched midway, and the end of the branched branch path (flow path) 45 is the exhaust path of the heat exchange type ventilation device 39.
It communicates with 41.

The heat exchange type ventilation device is provided on the suction side of the fan 43.
An intake pipe (flow passage) 46 provided so as to communicate with the intake passage 40 of 39 is connected.

A ventilation unit 36 equipped with such a heat exchange type ventilation device 39
Then, the rotation of the fan 43 causes the heat source unit to rotate.
The air from 35 is introduced into the exhaust passage 41 of the heat exchange type ventilation device 39 through the exhaust pipe (flow passage) 44 and its branch passage (flow passage) 45, and at the same time, from the outside air intake 40a The fresh air is taken into the intake passage 40, and in the heat exchange section 42 where the two intersect, a part of the heat of the air passing through the exhaust passage 41 is recovered to the fresh air passing through the intake passage 40. The heat-deprived air is exhausted to the outside through the exhaust port 41a, and the fresh air that has recovered the heat enters the intake pipe (flow path) 46 in the ventilation unit 36 from the lower part of the ventilation device 39 and the fan 43. By the rotation of, the gas is again sent into the exhaust pipe (flow path) 44, passes through the exhaust pipe (flow path) 44, and is supplied into the air supply duct 24.

Further, the control of each of these units 35, 36 is performed collectively by a control device (not shown). That is, this control device is connected to a motor for driving the fan 43, a motor for operating the heat exchanger 37 and the outdoor unit 34, etc., and these can be driven and controlled by a wireless remote controller or the like not shown. ing. In addition, consideration is given to this control device so that the amount of air blown into the room and the temperature of the air blow can be adjusted.

Next, the operation of the air conditioner 32 of this embodiment will be described.

First, based on a command from the control device, the fan 43 installed between the heat source unit 35 and the ventilation unit 36 is started to operate, and the air in the entire building is exhausted to the exhaust port 30 near the first floor.
Negative pressure is sucked into the exhaust duct 29 more collectively.

The air is introduced into the air conditioner 33 through the exhaust duct 29. The air introduced into the air conditioner 33 is a heat source unit.
After passing through the heat exchanger 37 of 35, the temperature thereof is adjusted to a predetermined temperature by the refrigerant supplied from the outdoor unit 34, and cooling / heating is performed. The air adjusted to a predetermined temperature by the heat exchanger 37,
It is introduced into the exhaust pipe (flow path) 44 by the fan 43 and rises through the exhaust pipe (flow path) 44. A part of this air is distributed to a branch path (flow path) 45 branched from a part of the exhaust pipe 44, and the branch path (flow path) 45 is distributed.
And is introduced into the exhaust passage 41 of the heat exchange type ventilation device 39. At the same time, with the rotation of the fan 39, fresh outside air is taken into the heat exchange type ventilation device 39 from the outside air intake 40a and flows in the intake passage 40. At this time, in the heat exchange section 42 where the intake passage 40 and the exhaust passage 41 intersect, the heat of the air passing through the exhaust passage 41 is partially recovered by the fresh air passing through the intake passage 40 to perform heat exchange. . The heat-deprived air is exhausted to the outside, and fresh air adjusted to a predetermined temperature passes through the intake passage 40 from the lower part of the ventilation device 39 to the intake pipe (flow passage) provided in the ventilation unit 36. Road) 46
Sent in. The air in the intake pipe (flow path) 46 is
By the rotation of the fan 43, the exhaust pipe (flow path) again
Introduced within 44. Therefore, in the exhaust pipe (flow path) 44, the fresh air thus adjusted to the predetermined temperature and the air directly sent from the heat source unit 35 are mixed at a predetermined ratio. And is ventilated.

The conditioned air thus generated by cooling and heating and ventilation is sent from the upper part of the air conditioner 33 into the air supply duct 24, passes through the main duct 25, the sub-ducts 26, 26 ... And is distributed in a predetermined direction. , Is supplied to each room 22,22 of the building to cool and heat the room.

On the other hand, unconditioned air in each room 22, 22 ... and dirty air after heating / cooling / ventilation are collectively discharged into the exhaust duct 29 through the exhaust port 30 opening near the first floor. It is sucked in, repeatedly introduced into the air conditioner 33, and circulates. As a result, as the operation of the integrated centralized air conditioning system progresses, the entire building including the rooms 22, 22 ... Is maintained in a desired harmony state.

Thus, according to the present embodiment, the fan 43 that sends air from the heat source unit 35 side to the ventilation unit 36 side is installed between the heat source unit 35 and the ventilation unit 36.
On the outlet side of 43, an exhaust pipe (flow path) 44 communicating with the air supply duct 24 and an exhaust path 41 of the heat exchange type ventilation device 39.
A branch passage (flow passage) 45 communicating with the fan is provided.
Since an intake pipe (flow path) 46 communicating with the intake passage 40 of the heat exchange type ventilation device 39 is provided on the suction side of 43,
By the one fan 43, it is possible to collectively perform the intake and exhaust from the building 20 into the air conditioner 33 and the intake and exhaust from the outside into the ventilation unit 36. Therefore, in comparison with the conventional air conditioner in which two blower fans are provided in the air conditioner 33 and one fan is provided in the heat exchange type ventilation fan,
It is possible to omit the fan in the heat exchange type ventilation device 39 and reduce the number of the two ventilation fans to one. Therefore, the energy required for the rotation of the fan 43 can be reduced, which is economically advantageous, and vibration and noise accompanying the rotation of the fan 43 can be reduced,
It also reduces discomfort and discomfort to the inhabitants. Further, by using only one fan 43, the disposition of each device in the air conditioner 33 is improved, and accordingly, the entire air conditioning apparatus 32 can be made compact.

Further, by adjusting the rotation speed of the fan 43, it is possible to appropriately adjust the degree of air supply / exhaust to the heat exchange type ventilation device 39 (air volume, air pressure, etc.).

In addition, in this embodiment, a gantry 31 is provided outside the building 20, and each device of the air conditioner 32 (the air conditioner 33 and the outdoor unit 34) is arranged on each of the steps 31a and 31b of the gantry 31. Since the configuration is adopted, the devices are arranged side by side, and the space for installing these devices can be small. Therefore, even in today's housing situation where it is difficult to provide sufficient space with adjacent land due to the densely packed houses, effective use of land and space is not wasted. Can be planned.

Further, the air sucked from the exhaust duct 29 is subjected to intensive air conditioning including cooling and heating and ventilation in the air conditioner 33, and this conditioned air is supplied from the air supply duct 24 into the respective rooms 22, 22. Therefore, the air conditioning of the building 20 can be performed centrally and comprehensively.

In addition, by providing the function of ventilation, indoor air pollution is prevented, consideration is given to the health of the inhabitants, the local temperature distribution in the room is eliminated, condensation prevention and the prevention of mold, mites, etc., It will be possible to extend the life of the house.

The air conditioner 32 of the present invention is not limited to the configuration of the above-described embodiment, and the external appearance, dimensions, and the specific configuration of each unit 35, 36 arranged inside can be appropriately changed in implementation. It is said that.

For example, in the above-described embodiment, the exhaust pipe (flow path) 44 in the ventilation unit 36 is branched midway and this is branched off (flow path).
45, the branch passage (flow passage) 45 and the exhaust passage 41 of the heat exchange type ventilation device 39 are connected to each other.
The flow path 45 that is communicated with is not limited to the branch path as in the above embodiment, and a pipe (flow path) that is a flow path that communicates with the exhaust path 41 is directly provided on the outlet side of the fan 43. It may be configured to be connected.

Further, a shutter is attached to each of the places where the exhaust pipe 44 communicates with the air supply duct 24, the place where the exhaust pipe 44 communicates with the branch passage 45, etc., such that the opening / closing degree can be adjusted,
The opening and closing of these shutters may be appropriately performed,
This makes it possible to adjust the mixing ratio of the air collected from inside the building and the fresh air from the outside, that is, the degree of ventilation.

Further, in the above-described embodiment, the pedestal 31 is arranged outside the building 20, and each stage (31a, 31b) of the pedestal 31 is provided with each device (air conditioner 33 and outdoor unit 34) that constitutes the air conditioner 32 of the present embodiment. Although an example of mounting is shown, the gantry 31 can be omitted as appropriate.
Further, the pedestal 31 has a vertical three-stage configuration, and the air conditioner 33 has a configuration in which the heat source unit 35 and the ventilation unit 36 are separated from each other, and the outdoor unit 34 is provided at the bottom of the pedestal 31.
The heat source unit 35 may be placed in the middle stage, and the ventilation unit 36 may be placed in the uppermost stage. In this case, the fan provided below the ventilation unit 36
Since the 43 is placed directly on the uppermost stage of the pedestal 31 and is substantially fixed, the vibration accompanying the rotation of the fan 43 is stopped or reduced by the pedestal 31. can get.

Further, in the above-mentioned embodiment, the heat source unit 35 and the ventilation unit 36 are provided in the air conditioner 33 to provide the functions of cooling and heating and ventilation, but other than this, for example, if necessary, for air purification. It is also possible to add a multi-functional unit having various functions such as a function, a dehumidifying or humidifying function, an oxygen mixing function, or a carbon dioxide gas removing function.

[Effects of the Invention] As described above, according to the air conditioner of the present invention,
An air intake path that takes in outside air to the ventilation unit of the air conditioner,
A heat exchange type ventilation device provided with an exhaust passage for exhausting unnecessary air and a heat exchange section for exchanging heat between the intake passage and the exhaust passage is provided between the ventilation unit and the heat source unit. Is provided with a fan for sending air from the heat source unit side to the ventilation unit side, and a flow path communicating with the air supply duct and an exhaust path of the heat exchange type ventilation device are provided on the blowout side of the fan. Since a flow path that communicates with the intake path of the heat exchange type ventilation device is provided on the suction side of the fan, the air from the building to the air conditioner is blown by the one fan. It is possible to collectively perform the intake and exhaust of the air, and the intake and exhaust from the outside into the heat exchange type exhaust device. Therefore, the number of fans can be reduced as compared with the conventional air conditioner in which a plurality of fans are provided in the air conditioner, and the fans in the heat exchange type ventilation device can be omitted. Therefore, it is possible to reduce the energy required to rotate the fan, which is economically advantageous, and to reduce the vibration and noise that accompany the rotation of the fan, which makes the occupants feel uncomfortable and uncomfortable. Also disappears. Further, since the number of fans is one, the disposition of each device in the air conditioner is improved, and accordingly, the entire air conditioner can be made compact.

Further, since the fan having the above-described configuration is provided, the degree of intake and exhaust of air into the heat exchange type ventilation device can be appropriately adjusted by a simple operation only by changing the rotation speed of the fan, and at the same time, the degree of ventilation can be adjusted. It also has excellent operability in that adjustments such as the above can be performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of an integrated centralized air conditioning system using the air conditioner of the present invention, and FIGS. 2 and 3 show an embodiment of the air conditioner of the present invention.
FIG. 2 is a perspective view, FIG. 3 is a side sectional view, and FIGS. 4 and 5 show an example of a conventional air conditioner, which are sectional views seen from the front and side, respectively. 20 …… building, 22 …… room, 24 …… air supply duct, 29 …… exhaust duct, 32 …… air conditioner, 33 …… air conditioner, 35 …… heat source unit, 36 …… ventilation unit, 39 …… heat exchange type ventilation device, 40 …… intake passage, 41 …… exhaust passage, 42 …… heat exchange section, 43 …… fan, 44 …… exhaust pipe (flow passage), 45 …… branch passage ( Flow path), 46 ... Intake pipe (flow path).

Claims (1)

[Claims] 1. An air supply duct for supplying air to each room of a building is connected to an upper part, an exhaust duct for exhausting air from each room is connected to a lower part, and the inside is provided with the exhaust gas. An air conditioner that circulates air from the duct side to the air supply duct side and that includes a heat source unit that cools and heats the air, and an air conditioner that has a ventilation unit that ventilates the air, The ventilation unit is a heat exchange type ventilation having an intake passage for taking in outside air, an exhaust passage for exhausting unnecessary air, and a heat exchange section for exchanging heat between the intake passage and the exhaust passage. A device is provided, a fan that sends air from the heat source unit side to the ventilation unit side is provided between the ventilation unit and the heat source unit, and a flow that communicates with the air supply duct is provided on the blowout side of the fan. And the heat exchange type ventilation device Provided a flow passage communicating with the exhaust passage, also the suction side of the fan, an air conditioner, wherein a flow passage communicating with the intake passage of the heat exchange type ventilator is provided.