JPH07158907A - Air-conditioning machine - Google Patents

Abstract

PURPOSE:To permit air conditioning which never accompany the feeling of airflow, noise and the like. CONSTITUTION:An air duct 10, provided on the ceiling surface 11 in a room along a wall surface 12 so as to constitute a circulation circuit and provided with a radiation panel 15 on a surface faced to the inside of the room, is provided while the radiation panel 15 of the air duct is heated and/or cooled by introducing air, in which heat exchange is effected, into the duct 10. An air- conditioning machine is provided with a heat exchanging unit 17, effecting the air conditioning of a room by radiation heat from the radiation panel 15, and a controller, controlling the switching of first and second dampers provided in the air duct 10, the heat exchanging unit 17 and suction as well as delivery port louvers in accordance with the atmosphere in the room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner that performs indoor air conditioning.

[0002]

2. Description of the Related Art Conventionally, an indoor unit 1 of an air conditioner is
Most of them are arranged on the wall surface 3 near the ceiling 2 in the room as shown in FIG. 19, so that the dead space near the ceiling 2 is effectively used.

The indoor unit 1 of this air conditioner sucks the indoor air from the suction port shown in FIG. 4 to perform heat exchange, and then the heat-exchanged air is discharged from the air outlet shown in FIG. The air in the room is made to convection, and so-called convection air conditioning is performed.

[0004]

By the way, the above-mentioned air conditioner has the following problems to be solved. That is, in an air conditioner that always performs convection type air conditioning as described above, comfort may be deteriorated due to the feeling of airflow of blown air depending on the indoor temperature environment.

Further, there are cases in which it is impossible to avoid noise and vibration caused by the blowing of air. The present invention has been made in view of the above circumstances, and an object thereof is to provide an air conditioner capable of performing air conditioning without feeling of airflow, noise, and the like.

[0006]

A first means of the present invention is a surface which is formed along a ceiling surface, a wall surface or a floor surface in a room and which has a flow path for air to flow therein and which faces the room. Is provided in a part of this air duct, and the heat exchanged air is circulated in this duct to heat or cool the radiant surface of the air duct. An air conditioner comprising: an air conditioner that performs air conditioning in a room by radiant heat.

According to the second means, a circulatory flow path for air is formed along the wall surface in the ceiling of the room, and the surface facing the room is heated or cooled by the air flowing inside to radiate heat. An air duct that serves as a radiation surface for heating or cooling the indoor air by means of a heat exchange unit having a heat exchanger and a blower fan provided in the air duct, and an upstream side of the heat exchanger of the air duct. A suction port for sucking indoor air into the air duct, a suction port opening / closing means for opening / closing the suction port, and a suction port opening / closing means for downstream of the heat exchanger in the air duct. And an air outlet opening / closing means for opening / closing the air outlet, and a first opening / closing damper provided in an air duct upstream of the air inlet and capable of communicating or closing the air duct. A second opening / closing damper provided in an air duct on the downstream side of the air outlet and capable of connecting or closing the air duct; and the air inlet opening / closing means, the air outlet opening / closing means according to the indoor environment, The first opening / closing damper and the second opening / closing damper are respectively controlled to perform indoor air convection type air conditioning using the inlet and outlet and radiant type air conditioning by radiant heat from the radiating surface of the air duct as necessary. An air conditioner comprising: a control unit for selecting.

A third means is, in the air conditioner of the second means, circulates in the air duct at a position apart from the heat exchange unit in the air duct and heats a radiation surface of the air duct. It is characterized in that a second air outlet is provided to blow air into the room.

A fourth means is, in the air conditioner of the second means, a dew point detecting means for detecting the dew point temperature of water vapor contained in the room air, and a temperature for detecting the temperature of the room air near the surface of the duct. A detection means, and the control means, when the temperature of the room air detected by the temperature detection means is equal to or higher than the dew point detected by the dew point detection means, the first and the first The opening and closing damper 2 is closed to regulate the radiant air conditioning by the radiant heat from the radiant surface of the air duct.

The fifth means is formed along the wall surface of the ceiling portion in the room, has a flow passage through which air circulates, and heats or cools the surface facing the room by the air flowing inside. The air duct is a radiant surface that heats or cools the indoor air by radiant heat, and is connected to a part of this air duct, and the air sucked from the indoor side passes through the heat exchanger and then flows into the air duct. And an air outlet that is provided in a part of the air duct and that blows out the air after heating or cooling the radiation surface of the air duct by circulating the air in the air duct. It is a feature.

A sixth means is formed from a ceiling surface to a wall surface and a floor surface in the room, has a flow path through which air circulates inside, and heats a surface facing the room with air flowing inside. Or an air duct that is a radiant surface that heats or cools indoor air by being cooled by radiant heat, and a ceiling surface, a wall surface, a ceiling surface that opens to the floor surface, a wall surface, or a floor that is provided in the middle of this air duct. It is characterized in that it is provided with each outlet of the surface.

The seventh means is, in the air conditioner of the sixth means, provided in the air duct and opening / closing means for opening / closing each of the outlets on the ceiling surface, the wall surface, and the floor surface, and the indoor environment. And a control means for controlling the opening / closing means in accordance with the above.

[0013]

According to the first means, radiant heat from the radiating surface of the duct can be used to heat and cool an object such as air or a person. According to the 2nd-4th means, the heat exchange unit provided in the duct can perform convection type and radiation type air conditioning as needed.

According to the fifth means, by allowing the air from the indoor unit to pass through the duct, radiant air conditioning can be performed by the radiant heat from the radiating surface provided on the duct. According to the sixth and seventh means, it is possible to conditioned the air in the room by the radiant heat from the ceiling surface, the wall surface, and the floor surface.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the air conditioner of the present invention has an air duct 10 (hereinafter, referred to as “duct”) installed in a room in a manner of a ceiling (a kind of architectural style). As shown in FIG. 2, the duct 10 is provided at a corner portion composed of an indoor ceiling 11 and a wall surface 12, and has a heat insulating plate 14 in contact with the indoor ceiling 11 and the wall surface 12 and radiation facing the indoor side. An air flow passage 16 having a rectangular cross section is defined by the plate 15 (radiation surface). This radiation plate is formed of a material such as aluminum having a high thermal conductivity.

For example, in the case of a rectangular room as shown in FIG. 1, the duct 10 is provided in the shape of a rectangular loop that goes around the room along a corner formed by the ceiling 11 and the wall surface 12. Air can be circulated in the duct 10.

As shown in the figure, a portion 17 (heat exchange unit, air conditioning means) corresponding to an indoor unit of the air conditioner is disposed in the middle of the duct 10. Hereinafter, this configuration will be described.

As shown in FIGS. 1 and 3, the lower surface of the duct 10 is provided with a suction port 18 and a blowout port 19 which are separated by a predetermined dimension along the air flow direction. As shown in FIG. 3, the suction port 18 and the blowout port 19 are provided with a suction port louver 20 and a blowout port louver 21 for opening and closing the suction port 18 and the blowout port 19, respectively.

Further, the suction port 18 in the duct 10
A heat exchanger 22 that is inclined at a predetermined angle and has one surface facing the suction port 18 is arranged between the air outlet 19 and the air outlet 19 so as to close the inside of the duct 10.

Between the heat exchanger 22 and the air outlet 19, a blower fan for circulating the air in the duct 10 from the suction port 18 toward the air outlet 19 as shown by the arrow (a) in the figure. 23 are provided.

Further, first and second dampers 25, 26 capable of closing or opening the inside of the duct 10 are provided on the upstream side and the downstream side of the duct 10 sandwiching the suction port and the air outlet, respectively. It is openable and closable.

Although not shown, the suction inlets, the outlet louvers 20, 21 and the first and second dampers 25, 26 are provided.
A drive motor is connected to each of the drive motors and is opened and closed by each drive motor. The drive motor is connected to a control unit indicated by 28 in the drawing and is operated by a command from the control unit 28.

Further, a compressor and a control valve (not shown) connected to the heat exchanger 22 by piping are also provided in the control unit 28.
The fan 23 is also operated by a command from the controller 28.

On the other hand, on the lower surface of the duct 10 on the downstream side of the blowout port 19, the radiation plate 1 constituting the duct 10 is provided.
A surface temperature detection sensor 29 for detecting the surface temperature of No. 5 is attached.

Then, the suction port 1 in the duct 10
In the vicinity of 8, an indoor air detection sensor 30 that detects the temperature and humidity of the indoor air is provided. The surface temperature detecting sensor 29 and the room air / air detecting sensor 30 are connected to the control unit 28. The control unit 28 is
The temperature of the dew point of steam contained in the indoor air (the temperature at which dew condensation occurs) is calculated from the temperature and humidity of the indoor air detected by the indoor air detection sensor 30 and detected by the temperature and the surface temperature detection sensor 29. Duct 1 above
Compare with a surface temperature of zero. The control unit 28 controls the air conditioner based on the comparison result as described below.

The control of the air conditioner by the control unit 28 will be described below. FIG. 4 is a schematic diagram showing the entire air conditioner. This drawing shows a case where the suction inlets, the outlet louvers 20, 21 and the first and second dampers 25, 26 are all in the open state.

The control of the air conditioner according to the indoor environment will be described below with reference to this schematic diagram. First, the heating operation will be described.

First, when the temperature of the room is low and it is desired to rapidly raise the temperature of the room, such as when rising, the second
First, the case where the temperature of the room has warmed to a certain degree, and thirdly, the case where the temperature of the room approaches or reaches the set temperature will be separately described.

The control in these three cases is determined by the control unit 28 based on the temperature of the room air described above, or is performed by the user operating a remote control switch or the like.

First, the first case will be described. In this case, as shown in FIG. 5, the first and second dampers 25,
26 is closed, and the suction port 20 and the outlet louver 21 are closed.
To open.

The control valve of the air conditioner is switched to the heating operation, and the compressor and the fan 22 are operated to perform the heating operation. Because of this, the suction port 18
The room air sucked into the duct 10 through the heat exchanger 22 is blown into the room through the outlet 18 without flowing through the duct 10, and the air in the room is directly heated by so-called convection heating. It will be.

Therefore, the user near the outlet 18 can directly feel the warm wind, and the indoor temperature can be rapidly raised. The second case will be described.

In the second case, the first case (FIG. 5)
In addition to the above, the first and second dampers 2 as shown in FIG.
Open 5, 26. In this case, a part of the warm air circulated by the fan 23 circulates in the duct 10 and heats the radiation plate 15 of the duct 10. Then, objects such as air and people in the room are warmed by the radiant heat from the radiant plate 15, and so-called radiant heating is performed.

A portion of the hot air is blown into the room for convection heating, but the air flow rate is reduced. Therefore, the feeling of air flow and noise due to the blowing air can be reduced, and the comfort of heating can be improved. It should be noted that the heating capacity is not lowered even if the flow rate of air blown into the room, which is to be used together with the radiant heating, is small.

Next, the third case will be described. Third
The case is when the temperature of the room becomes warm. In this case, the inlet and outlet louvers 20, 21 are closed from the second case (FIG. 6). As a result, the convection heating is stopped and only the radiant heating is operated.

In this case, since all the warm air circulated by the blower circulates in the duct, there is no feeling of air flow and there is no noise accompanying the blowing. Therefore, there is an effect that comfort during heating is further improved. Further, since hot air circulates in the duct, there is also an effect that the input of the heat source system for realizing the same radiation temperature can be reduced.

Next, the cooling operation will be described. Even during the cooling operation, the following control is performed according to the operation status, as in the heating operation. Firstly, there is a possibility that dew condensation may occur on the surface of the duct 10 when it is desired to cool the room rapidly when the room temperature is very high such as at the time of rising.

In the first case, as shown in FIG. 5, the first and second dampers 25 and 26 are closed, and the outlets and suction louvers 20 and 21 are opened. Then, the control valve of the air conditioner is switched to the cooling operation and the fan 23 is operated.

As a result, so-called convection cooling is performed, the air in the room is cooled rapidly, and the user can feel the cool air. In the second case, as described above, the control unit 28 compares the temperature of the surface of the duct 10 detected by the surface temperature detection sensor 30 with the dew point temperature detected by the indoor air detection sensor 29. Based on the above, the first and second dampers 25,
26 and the outlet and suction dampers 20 and 21 are finely controlled.

That is, if the surface temperature of the radiation plate 15 of the duct 10 is lower than the dew point, dew condensation may occur on the surface of the radiation plate 15. This is when the humidity is high, that is, the dew point is high. In this case, it is necessary to lower the room temperature or the room humidity first.

Therefore, the control unit 28 defines low humidity when the dew point is lower than the surface temperature, medium humidity when the dew point is slightly lower, and high humidity when the dew point is equal to or higher than the surface temperature as follows. The dampers 25 and 26, the suction port, and the outlet louvers 20 and 21 are controlled to be opened and closed.

First, the high humidity cooling operation will be described.
At the time of high humidity operation, as shown in FIG.
0 and the suction port louver 21 are opened, and the first and second dampers 25 and 26 are both closed. In this case, the radiation type cooling is not performed, but only the convection type cooling is performed.

When the room temperature is low, the fan 20 is weakened so as to suppress the air flow feeling in the room as much as possible. According to such control, since the cooled air does not flow in the duct 10, it is possible to effectively prevent the temperature of the radiation plate 15 of the duct 10 from cooling to a dew point or lower to cause dew condensation on the surface. be able to.

If the cooling operation is continued as it is, the temperature of the room is lowered, and the drain generated in the heat exchanger 22 is collected to dehumidify. This results in medium humidity and the following control is performed.

Next, the medium humidity cooling operation will be described.
During medium humidity operation, the first and second dampers 25 and 26 are also opened as shown in FIG. 6 in addition to during high humidity operation. In this case, part of the cooled air circulated by the fan 23 circulates in the duct 10 and cools the radiation plate 15 of the duct 10. Then, the air in the room is cooled by the radiant heat from the radiant plate 15, and the radiant cooling is performed.

In this case, convection cooling is also performed in parallel by the air blown out from the air outlet 19. By thus using the radiation cooling and the convection cooling together, a weak radiation cooling can be performed and the flow rate of air blown out by the convection cooling can be reduced.

Therefore, it is less likely that the radiation plate 15 is too cold to cause dew condensation on the surface thereof, and the air flow feeling and noise due to the convection cooling can be reduced. Further, since the indoor dehumidification can be performed by performing the convection cooling, the indoor humidity further decreases and the humidity becomes low, so that the next control can be performed.

Next, the low humidity operation will be described. During low-humidity operation, as shown in FIG. 7 from the state during medium-humidity operation (FIG. 6), both the inlet and outlet louvers 20, 21 are closed, and the first and second dampers 25 in the duct 10 are closed. , 26 open. As a result, the cooled air circulates only in the duct 10 and only the radiant cooling is performed.

Since the convection type cooling is not performed at all, it is possible to eliminate the feeling of air flow and noise caused by the blowing of cold air.
There is an effect that a more comfortable cooling operation can be performed. Moreover, since cooling is performed by circulating the cooled air in the duct, the input of the heat source system for realizing the same radiation temperature can be reduced.

According to the first embodiment, since the air duct 10 can be installed in a descending ceiling type, which is a kind of architectural style, it has an excellent interior effect.

Next, the second embodiment will be described. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. In the second embodiment, as shown in FIG. 8, a second outlet 32 is provided at a position apart from the position where the heat exchanger 22 and the like of the duct 10 are provided, and the second outlet 32 is provided. 32 is provided with a second outlet louver 33 for opening and closing this. In this embodiment, the second outlet 32 is provided at a position farthest from the heat exchanger 22 and the like.

Next, the control of the air conditioner performed by the control unit 28 will be described. First, control during heating operation will be described. During the heating operation, the second outlet louver 33 is closed, and the same control as in the first embodiment is performed. Therefore, the description of this embodiment is omitted.

Next, the cooling operation will be described. During high-humidity operation, as shown in FIG. 9, the suction port and the outlet port louvers 20, 21 are opened, and the first and second dampers 2 are opened.
5, 26 and the second outlet louver 33 are closed. As a result, the same action and effect as in the high humidity cooling operation of the first embodiment can be obtained.

During medium humidity operation, as shown in FIG.
The first and second dampers 25 and 26 are opened while the second louver 33 is closed. Therefore, it is possible to obtain the same action and effect as those in the medium humidity operation of the first embodiment.

During low humidity operation, as shown in FIG.
While closing the outlet louver 21, the second outlet louver 21 is closed.
Open the bar 33. In this case, the air in the room is the suction port 20.
The cold air that has been sucked in through the duct 10 merges with the cold air flowing through the duct 10 and passes through the heat exchanger 22. The cooled air that has passed through the heat exchanger 22 is cooled by the first damper 26.
Through the duct 10 to reach the second outlet 32. A part of the cooled air is blown out into the room from the second outlet 32 at the second outlet 32.
Other cool air circulates in the duct 10.

That is, when the cooled air circulates in the duct 10, the radiant plate 15 of the duct 10 is cooled, and the radiant heat from the radiant plate 15 performs radiant cooling. In addition, convection cooling is also performed by blowing cool air into the room from the second outlet 32.

The difference from the above-mentioned medium humidity operation is the position where the cool air is blown out. The air blown into the room for convection cooling is also supplied from the heat exchanger 22 to the second outlet 3
Since it contributes to the radiant cooling in the ducts 10 up to 2, the ratio of reliance on the radiant cooling becomes larger than that during the medium humidity operation.

Therefore, since the flow rate of the air blown out from the air outlet 22 may be small, it is possible to reduce the feeling of airflow associated with the blowing of the air and reduce the noise caused by the blowing out, and to perform a more comfortable cooling operation. There is an effect that can be done.

Further, even in the low humidity operation of this embodiment, since the convection type cooling is carried out, the indoor dehumidification can be carried out. Further, since the position of the second air outlet 32 is away from the air inlet 18, a short circuit kit does not occur and it is more excellent in convection type air conditioning of the whole room as compared with the medium humidity operation.

During the cooling sleeping operation, the second outlet louver 33 may be closed to provide only the radiation type cooling.
However, in this case, the cooling capacity needs to be weakened to the extent that dew condensation does not occur on the surface of the duct 10. But,
There is no problem because it is necessary to reduce the cooling capacity during sleep.

Next, the third embodiment will be described. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in FIG. 12, the air conditioner of the third embodiment is embedded in a duct 10 provided along a wall surface in a room and a ceiling 11 corresponding to a part of the duct 10 in an embedded manner. Indoor unit 3
It consists of 5.

As shown in the figure, the indoor unit 35 is
Has a suction port 36 and a first outlet 37 opening to the ceiling 11. The first outlet 37 is shown in FIG.
As shown in (1), a first outlet louver 38 is provided.

As shown in FIG. 13, a heat exchanger 39 and a fan 40 are provided in the indoor unit 35 between the suction port 36 and the first outlet 37. The one end of the indoor unit 35 is a communication passage 42 that communicates with the upper surface of the duct 10, and a damper 43 that closes or opens the communication passage 42 is provided in the communication passage 42. .

Therefore, when the indoor air sucked through the suction port 36 passes through the heat exchanger 39, the first outlet port louver 38 is opened when the first outlet port louver 38 is opened. The damper 4 is blown out into the room from 37
When 3 is open, it passes through the communication passage 42 and is circulated in the duct 10.

A second outlet 45 is provided at a position farthest from the position of the duct 10 to which the indoor unit 35 is connected, as shown in FIGS. 12 and 14. Therefore, as shown in FIG. 14, the air flowing from the indoor unit 35 into the duct 10 through the communication passage 42 is divided into left and right at the connection portion with the communication passage 42, and after flowing into the duct 10, The second air outlet 42 joins and the second air outlet 45 blows out indoors.

Next, the control of this air conditioner will be described. First, control during heating operation will be described. This control is performed firstly when the room is warmed up or rapidly, and secondly when the room is normally heated.

When the first control is performed, in FIG. 14, the first outlet louver 38 of the first outlet 37 is opened and the damper 43 is closed. Then, the control valve of the air conditioner is switched to the heating operation to operate the fan 40.

As a result, warm air does not flow in the duct 10 and only convection heating is performed by blowing air from the air outlet 37. As a result, the air in the room can be directly heated and a rapid heating effect can be obtained.

When the second control is performed, the first outlet louver 38 is closed and the damper 43 is opened.
The air in the room is sucked into the indoor unit 35 from the suction port 36 by the operation of the fan 40, warmed by the heat exchanger 39, passes through the damper 43, and passes through the communication passage 42 to the duct. It flows into 10. Then, while passing through the inside of the duct 10, the duct 1
The radiant plate 15 of 0 is heated, and the room is warmed by radiant heating by radiant heat from the surface of the radiant plate 15.

The duct 1 is connected to the second outlet 45.
The air that has flowed through the inside of 0 merges, and the second outlet 4
It is blown from 5 into the room. As a result, convection heating is also performed.

In this case, since radiant heating is performed, it is not necessary to increase the air flow rate when the heating capacity is sufficient thereby, and therefore the amount of air blown out from the second outlet 45 should be reduced. It is possible to reduce noise and air flow. Therefore, there is an effect that more comfortable heating can be performed.

Next, the control during the cooling operation will be described. First, the control during the cooling operation is separately performed at the time of rising or when the indoor temperature is high, and secondly, when dew condensation may occur.

In the first case, the damper 43 is closed, the first outlet louver 38 is opened, and only convection cooling is performed. The air in the room is directly cooled by the convection cooling, which has the effect of rapidly lowering the temperature in the room.

In the second case, in order to prevent dew condensation from occurring on the lower surface of the duct, the control is made different at high humidity, medium humidity and low humidity as in the first embodiment. Although not shown, as in the first embodiment, a surface temperature detecting sensor 29 is attached to the lower surface of the duct, and the temperature and humidity of the indoor air are kept near the suction port. An indoor air detection sensor 30 for detecting is provided.

In the above control, the control unit 28 controls the temperature of the surface of the duct 10 detected by the surface temperature detecting sensor 29 and the dew point temperature calculated based on the detected value of the indoor air detecting sensor 30. High by comparing
It is carried out by judging medium and low humidity.

In the case of high humidity operation, it is necessary to lower the room temperature and perform dehumidification. Therefore, the damper 43 is closed, and the air that has been sucked from the suction port 36 and heat-exchanged is blown out from the first blowout port 37 to perform convective cooling with a large air flow rate.

As a result, since cold air does not flow in the duct 10, dew condensation on the surface of the duct 10 is effectively prevented. In addition, the air can be circulated at the large flow rate to cool the room rapidly and effectively dehumidify the room. As a result, the following control is performed if the inside of the room has a medium humidity.

During medium humidity operation, both the damper 43 and the first outlet louver 38 are opened to reduce the ratio of the convection cooling and increase the amount of radiation cooling.
As a result, comfortable driving with less airflow and noise can be performed.

Since the first outlet 37 and the second outlet 45 are open, the flow rate of air blown into the room is relatively large. Therefore, dehumidification can be effectively performed, and if this results in low humidity, the following control is performed.

During low humidity operation, the first outlet rule
Radiant cooling is mainly performed by closing the bar 38 and circulating cooled air in the duct 10. Although air is blown out from the second air outlet 45, in the case of radiant cooling, there is no need to increase the air flow rate too much. Therefore, there is an effect that a comfortable cooling operation with less noise and feeling of airflow can be performed. Further, since the air in the room is sucked in, there is an effect that dehumidification can be performed to some extent at the same time.

The structure of the indoor unit is shown in FIG.
It is not limited to the one shown in FIG.
It may have a structure as shown in (c). That is, the indoor unit 35 ′ of FIG. 15 (a) is replaced by the indoor unit 35 ′ of FIG.
A flexible duct 47 for distributing the air inside the duct 10 to the left and right is provided.

The tip of the flexible duct 47 is
The flexible duct 47 is held by a fixing portion 48 provided in the duct 10, and the tip of the flexible duct 47 is shown in FIG.
It can be opened and closed by an electric damper shown by 9.

Further, the indoor unit 5 shown in FIG.
No. 0 is provided in the duct 10, and the suction port 51 (the suction port blower 3 in FIG. 13 is provided on the lower surface of the duct 10).
6)) and a first air outlet 52 (corresponding to the first air outlet 37 in FIG. 13) on the front surface. Although not shown, the first outlet 52 is provided with a first inlet louver, which is openable and closable, similarly to the third embodiment.

A turbo fan 54 is provided in the duct 10 corresponding to the upper side of the first air outlet 52.
Around the bofan 54, a heat exchanger 55 bent in a U shape is arranged. Further, first and second dampers 56 and 57 are provided on both sides of the duct 10 sandwiching the turbo fan 54 and the heat exchanger 55, respectively.
The inside can be closed or opened freely.

That is, when the turbo fan 54 operates, the air sucked from the suction port 36 passes through the heat exchanger 39 and is blown out from the first blowout port or the first blowout port. When the first and second dampers 56 and 57 are opened, the first and second dampers 56 and 57 are distributed to the right and left in the duct 10, and the second blower outlet 45 shown in FIG.
Is blown indoors.

The indoor unit 60 shown in FIG.
The lower surface of the duct 10 has a suction port 61 on the wall surface side and an air outlet 62 on the indoor side. A heat exchanger 63 is disposed between the suction port 61 and the blowout port 62, and a pair of fans 64 capable of blowing air in the extending direction of the duct 10 are opposed to each other above the blowout port 62. It is arranged so that air can be blown in any direction.

A pair of first and second dampers 65 and 6 are provided on both sides of the duct 10 that sandwiches the indoor unit 60.
6 is provided. Therefore, this indoor unit 60
Like other indoor units, the air sucks indoor air from the suction port 61 and blows the heat-exchanged air into the room from the air outlet 62.

Further, the first and second dampers 65 and 66 are also provided.
Is open, the heat-exchanged air is circulated from the damper into the duct 10, and the air is transferred to the radiation plate 1
After heating 5 to perform radiant heating, the second outlet 4
It is designed to be blown into the room from 5.

The effect similar to that of the third embodiment can be obtained also by such another indoor unit. In addition, about 1st-3rd Example, although the case where a lower ceiling part was used as the air duct 10 was demonstrated,
The present invention is not limited to this, and even if an air duct is provided on the back side of the ceiling surface 11 formed in a flat shape, substantially the same effects as those of the first to third embodiments can be obtained. .

Next, a fourth embodiment will be described. The air conditioner of the fourth embodiment, as shown in FIG.
It has an air duct 71 arranged from the ceiling surface 11 to one wall surface 12 and the floor surface 70. The radiation surface of the air duct 71 is the ceiling surface 11, the wall surface 12 and the floor surface 7.
It is provided integrally with 0.

As shown in FIG. 16, the air duct 71 is divided into first to fourth air ducts 71a to 71d from the ceiling surface 11 to the wall surface 12, and the first to fourth air ducts 71a to 71d are distributed. The air ducts 71a to 71d are directly on the floor surface 7
It is supposed to be extended to 0.

The air duct 71 formed on the ceiling surface 11 has, for example, a ceiling radiating plate 72 made of aluminum or the like installed on a ceiling substrate such as a gypsum board, plywood, etc. 73 and 73.

Further, each of the first to fourth air ducts 71a to 71d formed on the wall surface is partitioned by the stud and the heat insulating material 75, for example, by mounting a wall radiation plate 74 made of an aluminum plate or the like on a horizontal shaft. The space serves as an air flow path.

Further, each of the first to fourth air ducts 71a to 71d formed on the floor surface has a floor radiating surface 7 made of joist and aluminum or the like on which a heat insulating material 76 and plywood are attached on the draft.
7 and 7 form each air duct.

The air duct 71 provided on the ceiling surface
The indoor unit 78 is connected to the end of the. This indoor unit 78 is embedded in the ceiling and
The ceiling surface 11 has a suction port 79 and a first air outlet 80 which are open.

Further, the indoor unit 78 has a heat exchanger 81 and a fan 82 between the suction port 79 and the first outlet 80, and the downstream side of the indoor unit 78 is the air duct 71 as it is. Is in communication with. In addition, at the connecting portion between the indoor unit 78 and the air duct 71,
A first damper 84 that can close the air duct 71 is provided.

The first wall provided on the wall surface 12
~ The wall surface 12 is provided on the fourth air ducts 71a to 71d.
Second and third outlets 8 opening at the upper end and the lower end of the
5, 86 are provided.

In the first to fourth air ducts 71a to 71d corresponding to the first and second outlets 85 and 86, immediately after the second and third outlets 85 and 86, Cooling tamper 87 capable of closing the air ducts 71a to 71d
And a heating damper 88 are provided respectively.

Further, the dampers 87 and 88 are arranged so that when the air ducts 71a to 71d are opened, the dampers 87 and 88 simultaneously move to the second and the second ducts.
The third outlets 85 and 86 can be closed.

A third air outlet 90 is provided at the end of each of the air ducts 71a to 71d formed on the floor surface 70 and is open to the room. Next, the control of this air conditioner will be described.

First, the control during heating will be described. At the time of heating, the control is separately performed firstly when performing rapid heating, and secondly when performing normal heating.

When performing the first rapid heating, the first damper 84 is closed and only the convection heating by the indoor unit 78 is performed. This has the effect of warming the indoor air directly and rapidly.

When the second normal heating is performed, the first damper 84 and the cooling damper 87 are opened, and
The cooling damper 87 closes the first outlet 85. When floor heating is not performed, the heating damper 88 is closed to close the air ducts 71a to 71d immediately after the second outlet 86. When performing floor heating,
The heating damper 88 is opened to open the air duct 71a to
71d communicates with the floor surface 70.

Then, the control valve (not shown) of the air conditioner is switched to the heating operation and the fan 82 is operated. As a result, a part of the warmed air is blown out from the first outlet 80 provided on the ceiling surface to perform convection heating, and the other air is removed from the air duct 7 described above.
It is sent to the lower part of the wall surface 12 while performing radiant heating by circulating in 1 and is blown out into the room from the third outlet 86 provided at this position when floor heating is not performed.

When floor heating is performed, the warmed air in the air duct 71 reaches the ends of the air ducts 71a to 71d provided on the floor 70 while contributing to the radiant heating. The air is blown out into the room from the fourth air outlet 90 provided at the position.

According to such control, since the convection heating and the radiant heating can be used together, the amount of air blown out from the convection heating can be reduced by that amount, and the feeling of air flow and the air blowing can be accompanied. There is an effect that comfortable driving with less noise can be performed.

Next, the control during the cooling operation will be described.
During the cooling operation, first, it is necessary to obtain a rapid cooling effect, and secondly, when there is a possibility that dew condensation may occur on the surface of the radiation plate of the air duct 71, that is, the ceiling surface 11.

In the first case, the first damper 84 is closed and the indoor unit 78 cools only by convection cooling. Since the air in the room is cooled directly and rapidly and the cooled air does not flow in the air duct 71, it is possible to effectively prevent the dew condensation on the ceiling surface 11.

In the second case, the control is performed separately for high, medium and low humidity as in the case of the first embodiment and others. The surface temperature detecting sensor that is the basis of control is attached to the ceiling surface 11, and the indoor air detecting sensor is arranged near the suction port 79 of the indoor unit 78.

During the cooling operation, the temperature of the air in the air duct 71 rises as the distance from the indoor unit 78 increases, so it is sufficient to attach the temperature detecting sensor only to the ceiling surface 11. is there.

First, during the high humidity cooling operation, the same operation as in the first case is performed. However, in order to reduce the feeling of air flow, the output of the fan 82 is slightly suppressed. As a result, the indoor temperature is lowered and dehumidification is performed, and the humidity becomes medium or high, and the following control is performed.

In the case of medium and high humidity, the above first
Of the air duct 71 immediately after the second air outlet 85 using the second damper 87.
Block a to 71d.

In this case, the convection cooling is performed by the blowout from the first outlet 80, and the chilled air circulates through the air duct 71 on the ceiling surface so that the radiant cooling from the ceiling radiation surface 72 is also performed. Done.

In this case, since radiation cooling is also used, the amount of air blown out can be reduced by that amount, and the air flow feeling and noise can be reduced accordingly. Further, since dehumidification is appropriately performed, dew condensation on the ceiling surface 11 is also prevented.

Incidentally, in the case of a blow-through space such as a hall or a living room with a high ceiling, the structure shown in FIG. 18 may be used. With this configuration, the second outlet 85 is provided.
Is provided at a portion corresponding to the height of the first floor. Other functions are the same as those in the fourth embodiment.

According to this structure, it is possible to completely improve the points that could not be efficiently achieved by the ordinary convection air conditioning in the blow-through space. In particular, during heating, it is possible to eliminate the adverse effect of the convection method in which only the ceiling is heated. In addition, it is possible to directly cool and heat the human body by radiant heat even for the dissipation of cold air and warm air in a space with a large number of ventilation such as entrance hall and living room. -It is also effective.

Also in this embodiment, the first to third
Similar to the embodiment described above, if an opening / closing louver is provided in the first air outlet 80 and the first air outlet 80 is closed during radiation cooling, the same effect as in the other embodiments can be obtained. .

[0118]

As described above, the present invention is formed along the ceiling surface, wall surface, or floor surface of a room, has a flow passage through which air circulates, and radiates a surface facing the room. According to the indoor environment, a part of the air duct to be heated, by circulating the heat-exchanged air in this duct, to heat or cool the radiant surface of the air duct, the radiant heat from this radiant surface It is an air conditioner that can perform air conditioning.

According to such a structure, by performing the radiant air conditioning in accordance with the indoor environment, there is an effect that a comfortable air conditioning with less airflow feeling and noise associated with blowing air can be performed.

[Brief description of drawings]

FIG. 1 is an overall schematic perspective view showing a first embodiment.

FIG. 2 is likewise a longitudinal sectional view of an air duct.

FIG. 3 is likewise a vertical cross-sectional view of a main part.

FIG. 4 is also a schematic diagram.

FIG. 5 is a schematic diagram of the same.

FIG. 6 is also a schematic diagram.

FIG. 7 is a schematic diagram of the same.

FIG. 8 is a schematic diagram showing a second embodiment.

FIG. 9 is also a schematic diagram.

FIG. 10 is also a schematic diagram.

FIG. 11 is also a schematic diagram.

FIG. 12 is an overall schematic perspective view showing a third embodiment.

FIG. 13 is a perspective view showing a main part of the same.

FIG. 14 is also a schematic diagram.

FIG. 15 is also a perspective view showing another embodiment.

FIG. 16 is an overall schematic perspective view showing a fourth embodiment.

FIG. 17 is likewise an overall schematic vertical sectional view.

FIG. 18 is also a schematic perspective view showing another embodiment.

FIG. 19 is a perspective view showing a conventional example.

[Explanation of symbols]

10 ... Air duct, 11 ... Ceiling surface, 12 ... Wall surface, 15 ...
Radiant plate (radiation surface), 17 ... Heat exchange unit (air conditioner), 18 ... Suction port, 19 ... Blowing port, 20 ... Suction port rule
Bar (suction opening / closing means), 21 ... outlet louver (blowing opening / closing means), 22 ... heat exchanger, 23 ... fan (blower),
25 ... 1st damper (1st opening / closing damper), 26 ... 2nd
Damper (second opening / closing damper), 28 ... control unit (control means), 32 ... second outlet, 33 ... second outlet louver (second outlet opening / closing means), 29 ... indoor Air detection sensor (dew point detection means), 30 ... Surface temperature detection sensor (temperature detection means), 35 ... Indoor unit, 45 ... Second air outlet.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koichi Kitagawa 8 Shinshinsita-cho, Isogo-ku, Yokohama-shi, Kanagawa Stock company Toshiba Yokohama office

Claims (7)

[Claims] 1. An air duct which is formed along a ceiling surface, a wall surface or a floor surface of a room, has an internal flow passage for air, and has a surface facing the room as a radiation surface, and an air duct of the air duct. By providing air that has been heat-exchanged in a part of this duct, the radiant surface of the air duct is heated or cooled, and the air conditioning means for conditioning the air in the room by the radiant heat from this radiant surface. An air conditioner characterized by being provided. 2. The indoor air is circulated along the wall surface in the ceiling part of the room, and the surface facing the room is heated or cooled by the air flowing through the room so that the indoor air is radiated to heat the indoor air. An air duct serving as a radiation surface for heating or cooling, a heat exchange unit having a heat exchanger and a blower fan provided in the air duct, and an air duct provided upstream of the heat exchanger in the air duct. A suction port for sucking indoor air into the air duct, a suction port opening / closing means for opening / closing the suction port, and a suction port opening / closing means for opening / closing the suction port, the air inside the air duct An outlet opening / closing means for opening / closing the outlet, and a first opening / closing damper provided in the air duct upstream of the inlet and capable of communicating or closing the inside of the air duct. , A second opening / closing damper provided in the air duct on the downstream side of the air outlet and capable of connecting or closing the air duct, and the air inlet opening / closing means, the air outlet opening / closing means, or the second air outlet opening / closing means depending on the indoor environment. If necessary, the convective air conditioning of the indoor air using the suction opening and the air outlet and the radiant air conditioning by the radiant heat from the radiating surface of the air duct are controlled by controlling the first opening / closing damper and the second opening / closing damper, respectively. An air conditioner comprising: a control means for performing the operation. 3. The air conditioner according to claim 2, wherein the air that is provided at a position apart from the heat exchange unit of the air duct, flows through the air duct, and heats a radiation surface of the air duct indoors. An air conditioner comprising: a second air outlet that blows out into the air outlet; and a second air outlet opening / closing means that opens and closes the second air outlet. 4. The air conditioner according to claim 2, further comprising dew point detecting means for detecting the dew point temperature of water vapor contained in the room air, and temperature detecting means for detecting the temperature of the room air near the surface of the duct. The control means includes the first and second opening / closing dampers when the temperature of the room air detected by the temperature detection means is equal to or higher than the dew point detected by the dew point detection means. And regulating radiant air conditioning by radiant heat from the radiation surface of the air duct. 5. Formed along the wall surface of the ceiling in the room,
An air duct that has a flow path through which air flows inside and the surface facing the room is a radiating surface that heats or cools the room air by radiant heat by being heated or cooled by the air flowing inside. An indoor unit that is connected to a part of the air duct and that allows the air sucked from the indoor side to pass through the heat exchanger and then flow into the air duct; and the air unit that is provided in a part of the air duct. An air conditioner, comprising: an air outlet that blows out, into the room, air that has heated or cooled the radiation surface of the air duct by flowing inside. 6. A room is formed from a ceiling surface to a wall surface and a floor surface, and has an internal flow passage through which air flows,
An air duct that is a radiant surface that heats or cools the indoor air by radiant heat by heating or cooling the surface facing the room by the air flowing inside, and the ceiling surface provided in the middle of the air duct, An air conditioner comprising: a wall surface, a ceiling surface opening to the floor surface, a wall surface, and an outlet for the floor surface. 7. Opening / closing means provided in the air duct for opening / closing the duct and the outlets provided on the ceiling surface, wall surface or floor surface, and controlling the opening / closing means in accordance with the indoor environment. An air conditioner comprising: a control unit.