JPH0821652A - Floor blow-out air-conditioning method and air-conditioning device for floor blow-out system - Google Patents

Abstract

PURPOSE:To reduce greatly a space required for an underfloor space by a method wherein an air-conditioning device for floor blow-out system is arranged at the center or the vicinity of the center of an air-conditioning area while blow-out air is dispersed radially into the underfloor space from the lower part of the air-conditioning device for floor blow-out system. CONSTITUTION:A floor surface 17 is formed in a room 41 with a predetermined space Ho from a concrete floor 45 while an underfloor space 49 is formed between the floor surface 47 and the concrete floor 45. A plurality of floor blow-out ports 51 are formed on the floor surface 47 while an air-conditioning device 53 for floor blow-out system is arranged at the center of the room 41. An air blow-out port 55, dispersing the blow-out air from the air-conditioning device 53 radially into the underfloor space 49, is provided at the lower end of the air-conditioning device 53 for floor blow-out system while an air cleaner 61, a coil 63 and a fan 65 are arranged in the main body 59 of the air-conditioning device sequentially from the upper side thereof. The air cleaner 61 is constituted of a filter 65, provided annularly, to purify air, sucked from the circumference thereof, while the purified air is heated or cooled thereafter upon passing through the coil 63, then, is sent out into the room 41 from floor blow-out ports 51 through the underfloor space 47.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor blowout air conditioning method and a floor blowout air conditioning apparatus for air conditioning and blowing the conditioned air into an underfloor space formed under the floor.

[0002]

2. Description of the Related Art Recently, in offices and the like where OA equipment has been introduced, conditioned air is blown into an underfloor space formed under the floor, and conditioned air is discharged from a floor outlet formed on the floor. The air is blown to and the room is air-conditioned.

FIG. 8 and FIG. 9 show a conventional floor blowout air conditioning system. In this system, a ceiling space 15 is formed in a ceiling 13 of a room 11, and a floor surface 17 of the room 11 has a floor. An air outlet 19 is formed, and an underfloor space 21 is formed below the floor surface 17.

Then, the air in the ceiling space 15 is supplied to the room 1
After being guided to an air conditioner 31 provided with a filter 25, a fan 27, and a hot / cold water coil 29 arranged outside the wall surface 23 of No. 1, the conditioned air is supplied to the underfloor space 21, and the floor outlet 19 supplies the room 11 to the room 11. The air in the room 11 is air-conditioned and purified by being blown out into the room 11.

[0005]

However, in such a conventional floor blowing air conditioning system, the wall surface 2 of the room 11 is
3, an air conditioner 31 is arranged outside the air conditioner 3, and conditioned air is supplied from an air outlet 33 formed in a lower portion of the air conditioner 31 to the underfloor space 21.
Since it is supplied into the underfloor space 21, the flow of conditioned air in the underfloor space 21 becomes unidirectional, and in order to make the air volume from each floor outlet 19 uniform, the height H of the underfloor space 21 should be set large. There is a problem that it is necessary to reduce the wind speed, and a large space is required in the underfloor space 21.

Conventionally, there is known an air conditioner in which a cylindrical tower is erected in the center of a building space and conditioned air is blown out from this tower. The present invention has been made in order to solve such a conventional problem, and provides a floor blowout air conditioning method capable of significantly reducing the space required for the underfloor space and a floor blowout air conditioning apparatus suitable for this method. The purpose is to provide.

[0007]

According to a first aspect of the present invention, there is provided a floor blowout air-conditioning system, wherein a floor blowout air conditioner is arranged at or near a center of an air conditioning area, and air blown from a lower part of the floor blowout air conditioner is blown under the floor. It is distributed radially in space.

According to a second aspect of the present invention, in the floor blowout air conditioner, a fan and a coil are housed in the main body of the apparatus, and the air sucked into the main body of the apparatus by the fan is cooled or heated by the coil. In a floor blowout air conditioner blowing out from the lower part of the main body into the underfloor space, the device main body is formed in a tubular shape, and at the lower part of the device main body, air blown out from the device main body is radially dispersed in the underfloor space. It is formed by forming an outlet.

The floor blowing air conditioner according to claim 3 is the same as that according to claim 2.
In the above, the coil is formed in a truncated cone shape having a smaller diameter toward the lower side. According to a fourth aspect of the present invention, in the floor blowing air conditioner according to the second or third aspect, the fan is an axial blower.

The floor blowout air-conditioning apparatus of claim 5 is the same as that of claim 2
4 to 4, the apparatus main body is provided with a cylindrical air purifier that sucks ambient air. According to a sixth aspect of the present invention, in the third aspect, the coil is a refrigerant type coil through which a refrigerant having a gas-liquid phase change flows.

The floor blowout air-conditioning apparatus of claim 7 is the same as that of claim 6.
In the above, in the lower part of the coil, an evaporation mechanism for evaporating the drain generated in the coil is arranged.

An air conditioner for floor blowout according to claim 8 is characterized in that
In the above, the evaporation mechanism includes a drain pan disposed below the coil and an evaporation element mounted on the drain pan.

[0013]

According to the floor blowout air-conditioning method of the present invention, the air blown from the floor blowout air-conditioning device is radially dispersed in the underfloor space at or near the center of the air-conditioning area. Is smaller, and the distance from the floor air conditioner to each floor outlet is more uniform.

An air conditioner for floor blowout according to a second aspect is used by being arranged in the center of an air conditioning region or in the vicinity thereof, and air blown out from the blowout port is radially dispersed in the underfloor space. Further, since the device body is formed in a tubular shape, it is easy to achieve harmony with the interior of the room.

In the floor blowout air conditioner of the third aspect, since the coil is formed in a truncated cone shape having a smaller diameter toward the lower side,
This facilitates accommodation in the cylindrical device body, improves heat exchange efficiency, and reduces the size of the coil.

In the floor blowout air conditioner according to the fourth aspect, since the fan is an axial blower, it can be easily housed in the cylindrical apparatus body. In the floor blowing air conditioner of the fifth aspect, since the air purifier has a cylindrical shape, the air from the surroundings is efficiently sucked.

In the floor blowout air conditioner according to the sixth aspect of the present invention, the coil is a refrigerant type coil through which a refrigerant having a gas-liquid phase change flows, and the evaporation mechanism eliminates the need for a drain pipe or the like.
In the air conditioner for floor blowout according to the seventh aspect, the drain composed of condensed water generated in the coil is evaporated by the evaporation mechanism.

In the floor blowout air-conditioning apparatus of the eighth aspect, the drain formed of condensed water in the coil is absorbed by the evaporation element mounted on the drain pan, and the air which has passed through the center of the coil and has not undergone heat exchange is exchanged. Is vaporized by.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views for explaining an embodiment of the floor blowout air conditioning method of the present invention. In the drawings, reference numeral 41 indicates a room formed by a partition wall 43 in a rectangular shape. The inside is the air-conditioning area.

A floor surface 47 is formed in the room 41 at a predetermined distance H ₀ from the concrete floor 45, and an underfloor space 49 is formed between the floor surface 47 and the concrete floor 45. A plurality of floor outlets 51 are formed on the floor surface 47.

In this embodiment, a floor blowing air conditioner 53 is arranged at the center of the room 41. At the lower end of the floor blowout air conditioner 53, there is a blowout port 5 for radially distributing the air blown out from the floor blowout air conditioner 53 into the underfloor space 49.
5 is formed.

A blowout hole 57 is formed in the floor surface 47 to open the blowout port 55. FIG. 3 shows the details of the floor blowing air conditioner 53, and in the figure, reference numeral 59.
Shows a device body formed in a cylindrical shape.

Inside the device main body 59, in order from the upper side,
An air purifier 61, a coil 63 and a fan 65 are arranged. The air purifier 61 has a filter 62 formed in an annular shape and is capable of sucking air from the surroundings.

The coil 63 is formed in a truncated cone shape having a smaller diameter toward the lower side, and a truncated cone-shaped air passage 63a is formed in the center of the coil 63. As the coil 63, a refrigerant-type coil through which a refrigerant whose gas-liquid phase changes, which will be described later, flows is used.

The fan 65 is a propeller fan which is an axial blower. Further, in this embodiment, below the coil 63, an evaporation mechanism 67 for evaporating the drain generated in the coil 63 is arranged.

The evaporation mechanism 67 is composed of a drain pan 69 arranged below the coil 63, and an evaporation element 70 mounted on the drain pan 69.
The evaporation element 70 has an annular shape and is formed of, for example, a moisture absorbing member such as sponge or nonwoven fabric.

In this embodiment, the floor blowout air conditioner 53 employs a refrigerant circulation multi-system (RCM) completed by the applicant of the present invention. FIG. 4 shows an outline of this refrigerant circulation multi-system. This system has an indoor unit 75 in which a fan 71 and a coil 73 acting as an evaporator during cooling and as a condenser during heating are incorporated.
Is arranged above, and a heat exchanger unit 81 incorporating a heat exchanger 77 and a circulation pump 79, which function as a condenser during cooling and an evaporator during heating, is arranged below, and these are arranged in a circulation pipe 83,
It is connected by 85 and is filled with a refrigerant that changes in gas-liquid phase.

In this system, during cooling,
As shown in FIG. 4, the refrigerant liquid is forcibly supplied to the indoor unit 75 by using the circulation pump 79.
The refrigerant evaporated in 5 becomes a gas, which is returned to the heat exchanger 87 of the heat exchange unit 81 by the pressure difference between the evaporation pressure and the condensation pressure, and is heat-exchanged with the cold water and condensed.

On the other hand, during heating, as shown in FIG. 5, the pump 79 is stopped, the bypass valve 87 is opened, the refrigerant is circulated through the circulation pipes 83 and 85 by natural circulation, and the heat exchange of the heat exchange unit 81 is performed. The refrigerant heated by the hot water in the container 77 and evaporated is condensed in the indoor unit 75 and returned to the heat exchange unit 81 by the weight of the liquid.

In this embodiment, as shown in FIG. 1, the heat exchange unit 81 is arranged outside the room 41, the coil 63 shown in FIG. 3 corresponds to the coil 73, and the fan 6 is used.
5 corresponds to the fan 71.

As shown in FIG. 1, the heat exchange unit 81 and the coil 63 are connected by circulation pipes 83 and 85. In the floor blowout air conditioning method described above, the air in the room 41 is guided from the air purifier 61 of the floor blowout air conditioner 53 arranged in the center of the room 41 into the apparatus main body 59,
After being cooled or heated by the coil 63, the fan 65
As a result, the air is ejected from the air outlet 55 of the apparatus body 59 toward the concrete floor 45 side, and is radially emitted from the air outlet 55 to the underfloor space 49, and then passes through the underfloor space 49 from each floor air outlet 51 to the room 41. It is blown out inside.

Further, in the above-mentioned floor blowing air conditioner 53, the drain composed of condensed water generated in the coil 63 is absorbed by the evaporation element 70 mounted on the drain pan 69, as shown in FIG. It is evaporated by the air which has not passed the heat exchange and which has passed through the center of 63.

However, in the above floor blowout air conditioning method,
Underfloor space 49 in the center of room 41, which is the center of the air-conditioning area
In addition, since the air blown out from the floor blowing air conditioner 53 is radially dispersed, the underfloor wind speed becomes smaller than that in one direction, and the distance to each floor outlet 51 is made relatively uniform. As a result, even when the height H ₀ of the underfloor space 49 is reduced, it is possible to make the air volume from each floor outlet 51 relatively uniform, and the space required for the underfloor space 49 is significantly reduced compared to the conventional case. can do.

As a result, it becomes possible to flexibly cope with various architectural restrictions such as the height of the room 41.
Further, in the above-mentioned floor blowout air conditioner 53, the blowout port 55
Since the air blown out of the floor is radially dispersed in the underfloor space 49, it can be used as it is in the floor blowout air conditioning method of the present invention.

Further, since the apparatus main body 59 is formed in a substantially cylindrical shape, it can be easily harmonized with the interior of the room. That is, in the conventional floor air-conditioning device 53,
Since the device main body 59 had a thin rectangular shape, the room 4
When it is installed in the center of 1, it is difficult to harmonize with the interior of the room, and it is difficult to install it in the room. However, when the device body 59 is cylindrical, it is relatively easy to harmonize with the interior of the room. Can be achieved.

Further, in the above-mentioned floor blowout air conditioner 53, since the coil 63 is formed in the shape of a truncated cone having a smaller diameter toward the lower side, it can be easily housed in the cylindrical device body 59. The heat exchange efficiency can be improved and the coil 63 can be downsized.

That is, when the rectangular coil 63 used in the conventional floor air-conditioning device 53 is housed in the device body 59, as shown in FIG. And the heat exchange efficiency is reduced,
By making the coil 63 into a truncated cone shape, the coil 63 can be easily accommodated in the cylindrical device main body 59, the heat exchange efficiency can be improved, and the coil 63 can be downsized.

Further, since the fan 65 is an axial blower, it can be easily housed in the cylindrical device body 59. Further, since the air purifier 61 has a cylindrical shape, air from the surroundings can be efficiently sucked.

In the conventional air conditioner 53 for floor blowout, in order to reduce the thickness of the air conditioner, the shapes and installation of the coil, the filter and the fan to be incorporated in the main body 59 of the apparatus are unreasonable, and the static pressure inside the machine becomes large. , The static pressure of the fan was increased, the power was also increased, and the running cost was increased. However, in the present invention, since the device main body 59 has a cylindrical shape,
It is possible to reduce the static pressure in the machine and reduce the size of the apparatus as a whole.

Furthermore, in the above-mentioned floor blowout air-conditioning apparatus 53, since the coil 63 is a refrigerant type coil 63 through which a refrigerant having a gas-liquid phase change is circulated, it is not necessary to install a water pipe or the like.

Further, since the drain composed of condensed water generated in the coil 63 is evaporated by the evaporation mechanism 67, it is possible to eliminate the need for installing a drain pipe for condensed water. Furthermore, in the above-mentioned floor blowout air conditioner 53, the coil 63
The drain composed of the condensed water generated in step 6 is absorbed by the evaporation element 70 placed on the drain pan 69, and the coil 63
Since it is vaporized by the air that has not passed the heat exchange that has passed through the center of the, the condensed water can be surely treated.

In the conventional floor blowing air conditioner, since the water pipe and the drain pipe are required, it is necessary to install the device near the wall or in the machine room. However, in the present invention, the floor is provided in the center of the room 41. Since the blowout air conditioner 53 can be installed, it is possible to reliably deal with a change in layout and the like.

In the embodiment described above, the fan 65
Although the example using the propeller fan has been described in the above, the present invention is not limited to this embodiment, and an axial fan 65 such as a line fan may be used.

In the embodiment described above, the device body 5
Although the example in which 9 is formed in a cylindrical shape has been described, the present invention is not limited to this example, and may be, for example, an elliptical shape.

[0045]

As described above, according to the floor blowout air conditioning method of claim 1, since the blowout air from the floor blowout air conditioner is radially dispersed in the underfloor space at or near the center of the air conditioning area, The distance to each floor outlet is relatively uniform, and as a result, even when the height of the underfloor space is reduced,
The air volume from each floor outlet can be made relatively uniform, and the space required for the underfloor space can be significantly reduced compared to the conventional case.

In the floor blowout air conditioner according to the second aspect, the air blown out from the blowout port is radially dispersed in the underfloor space.
It can be used as it is in the floor blowout air conditioning system of claim 1. Further, since the device body is formed in a substantially cylindrical shape, harmony with the interior of the room can be easily achieved.

In the floor blowout air conditioner of the third aspect, since the coil is formed in a truncated cone shape having a smaller diameter toward the lower side,
It becomes easy to accommodate the device in the cylindrical device main body, the heat exchange efficiency is improved, and the size of the coil can be reduced.

In the floor blowing air conditioner according to the fourth aspect, since the fan is an axial blower, it can be easily housed in the cylindrical apparatus body. In the floor blowout air conditioner according to the fifth aspect, since the air purifier has a cylindrical shape, air from four directions can be efficiently sucked.

In the floor blowout air conditioner according to the sixth aspect, the coil is a refrigerant type coil through which a refrigerant having a gas-liquid phase change is circulated, and the evaporation mechanism makes it unnecessary to install a drain pipe or the like.

In the floor blowout air-conditioning apparatus of the seventh aspect, since the drain composed of the condensed water generated in the coil is evaporated by the evaporation mechanism, it is not necessary to install a drain pipe for the condensed water.

In the floor blowout air conditioner of the eighth aspect, the drain formed of the condensed water in the coil is absorbed by the evaporation element mounted on the drain pan, and the non-heat exchanged air passing through the center of the coil is passed. Because it is vaporized by
There is an advantage that the condensed water can be surely treated.

[Brief description of drawings]

FIG. 1 is a top view for explaining an embodiment of a floor outlet air conditioning method of the present invention.

FIG. 2 is a cross-sectional view showing the floor blowing air conditioner of FIG. 1 and its vicinity.

FIG. 3 is a perspective view showing an embodiment of an air conditioner for floor blowing according to the present invention.

FIG. 4 is a piping system diagram showing a state of the refrigerant circulation multi-system during cooling.

FIG. 5 is a piping system diagram showing a state of the refrigerant circulation multi-system during heating.

FIG. 6 is an explanatory diagram showing the operation of the evaporation mechanism.

FIG. 7 is an explanatory diagram showing a state in which a rectangular coil is accommodated in the apparatus main body.

FIG. 8 is a cross-sectional view showing a conventional floor blowing air conditioning system.

9 is a side view showing the floor blowing air conditioner of FIG. 8. FIG.

[Explanation of symbols]

 41 room 49 underfloor space 53 air conditioner for floor blowout 55 air outlet 61 air purifier 63 coil 65 fan 67 evaporation mechanism 69 drain pan 70 evaporation element

Claims (8)

[Claims] 1. A floor blow-out air conditioner characterized in that a floor blow-out air conditioner is arranged at or near the center of an air-conditioning area, and air blown from a lower part of the floor blow-out air conditioner is radially dispersed in an underfloor space. Method. 2. A fan and a coil are housed in the device body, and the air sucked into the device body by the fan is cooled or heated by the coil and blown out into the underfloor space from the lower part of the device body. In an air conditioner for floor blowing, the device body is formed in a tubular shape, and at the lower part of the device body, air outlets for radially distributing air blown out from the device body to an underfloor space are formed. Air conditioner for floor blowing. 3. The floor blowing air conditioner according to claim 2, wherein the coil is formed in a truncated cone shape having a smaller diameter toward the lower side. 4. The floor blowout air conditioner according to claim 2, wherein the fan is an axial blower. 5. The floor blowing air conditioner according to any one of claims 2 to 4, wherein a cylindrical air purifier that sucks ambient air is arranged in the main body of the apparatus. 6. The floor blowing air conditioner according to claim 3, wherein the coil is a refrigerant type coil through which a refrigerant having a gas-liquid phase change is circulated. 7. The floor blowing air conditioner according to claim 6, wherein an evaporation mechanism for evaporating the drain generated in the coil is arranged below the coil. 8. The floor blowing air conditioner according to claim 7, wherein the evaporation mechanism includes a drain pan arranged below the coil, and an evaporation element mounted on the drain pan.