JP2004278928A - Partial air-conditioning method and device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently perform the partial air-conditioning in a room where a heat generator exists. <P>SOLUTION: The conditioned air is supplied from a position opposite to the heat generator 2 through an air conditioned area 5 to the direction L connecting the air conditioned area 5 and the heat generator 2 from a side part, when the air is supplied to a room 1 where the heat generator such as a computer 2 exists, and the air of the specific area 5 located at a position separated from the heat generator 2 is conditioned in the room 1. The diffusion of the conditioned air c can be minimized by supplying the conditioned air c in parallel with the flow b of the air in the room flowing toward the heat generator 2 in the room, to efficiently partially condition the air of the air conditioned area. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for locally air-conditioning a part of a room.
[0002]
[Prior art]
For example, in a computer room, a cooling load is required throughout the year due to heat generated by the computer. In such a computer room, an ascending air current is generated by heating the air near a heating element such as a computer, and accordingly, an air flow such that room air flows laterally toward the computer below the room. Occurs.
[0003]
On the other hand, conventionally, from the viewpoint of energy saving, so-called local air conditioning (spot air conditioning) for locally air-conditioning a part of a room, but not the whole, has been performed. The local air conditioning is generally performed by supplying conditioned air appropriately adjusted to a desired temperature, cleanliness, humidity, or the like to a specific area to be air-conditioned. As described above, by forming a local air-conditioned space around a resident or the like in a large room, energy saving can be achieved by eliminating an unnecessary air-conditioning load. For example, FIG. 16 of Japanese Patent Publication No. 3-79618 discloses an example in which air conditioning is performed by forming an air flow in a painting booth. FIG. 1 of Japanese Patent Application Laid-Open No. 2000-18663 shows an example in which a zone is formed by partitioning a partition such as a wall or a curtain in a clean room, and the inside of the zone is locally air-conditioned. Japanese Patent Application Laid-Open No. Hei 6-300399 is known as a technique for removing an upward airflow generated from a heating element.
[0004]
[Patent Document 1] Japanese Patent Publication No. 3-79618
[Patent Document 2] Japanese Patent Application Laid-Open No. 2000-18663
[Patent Document 3] JP-A-6-300359
[0005]
[Problems to be solved by the invention]
Here, when local air conditioning is performed in a room having a heating element such as the computer room described above, the room is supplied with the flow of room air flowing toward the computer and the air toward the region to be air-conditioned. The flow of the conditioned air is mixed. For this reason, the flow of the air-conditioned air may be disturbed by the flow of the indoor air, and the air-conditioned area may not be air-conditioned as intended.
[0006]
In general, when a part of a room in a large space is locally cooled, the low-temperature airflow blown toward the air-conditioning target area attracts and mixes the surrounding atmosphere in the room due to the difference in relative speed, and the air-conditioning target is cooled. You will reach the area. For this reason, when reaching the air-conditioning target area, the temperature may increase and the cooling effect may be reduced. In order to prevent such a decrease in the cooling effect, it is conceivable to increase the discharge area and supply extra low-temperature air around the air conditioning target area. However, in this case, the cooling capacity must be increased, and energy is wasted.
[0007]
In addition, although there is a method of partitioning the air-conditioning target area by partitions, the partitioning of the room by partitions such as walls is a hindrance, and the degree of freedom of work is lost. In terms of workability, such partitions should be omitted as much as possible.
[0008]
An object of the present invention is to perform local air conditioning as efficiently as possible in a room where a heating element exists.
[0009]
[Means for Solving the Problems]
In order to achieve this object, according to the present invention, there is provided a local air conditioning method for supplying air to a room in which a heating element is present and for air-conditioning a specific area in the room at a position distant from the heating element. And supplying the conditioned air from a side opposite to the heating element with the area interposed therebetween in a direction connecting the area and the heating element from the side. Is done. In this case, a plurality of air-conditioned air flows may be combined to supply air to the area. Further, the conditioned air passing through the area may be sucked at a position opposite to the conditioned air blowing position across the area.
[0010]
Further, according to the present invention, there is provided a local air conditioner for supplying air to a room in which a heating element is present, and air-conditioning a specific area located in the room at a position distant from the heating element. A local air-conditioning outlet for blowing air-conditioned air is provided at a position opposite to the heating element across the area, and a direction of the local air-conditioning outlet is defined as the direction of the area and the area. A local air conditioner is provided, which is directed in a direction connecting the heating elements.
[0011]
Further, according to the present invention, there is provided a local air conditioner for supplying air to a room in which a heating element is present and for air-conditioning a specific area in the room at a position distant from the heating element. A plurality of outlets for local air conditioning to be blown out are provided at a plurality of locations, and the conditioned air blown out from each outlet for local air conditioning has substantially the same height as the area, and is opposite to the heating element across the area. The flow of the conditioned air obtained by combining the conditioned air blown out from each of the plurality of local air-conditioning outlets and directing the blowing direction of each of the plurality of local air-conditioning outlets so that the air is blown from the area is combined with the area. There is provided a local air conditioner, wherein the plurality of local air conditioning outlets are respectively arranged so as to be directed in a direction connecting the heating elements.
[0012]
In these local air conditioners, an intake port for sucking conditioned air that has passed through the region may be provided between the region and the heating element.
[0013]
In the present invention, the heating element has a heat-generating portion of, for example, 50 ° C. or more, and heats the surrounding air to generate an ascending airflow. The specific area to be locally air-conditioned is located in a room at a position away from the heating element, and is an area that becomes a part of the room, such as a work space or a work space where a person exists. The room in which a heating element is present is exemplified by a computer room in which a heating element such as a computer is present, but the present invention is also applicable to various rooms such as a clean room in which various heating elements are present. You. The air-conditioned air supplied to the air-conditioning target area is not only cooled air, but also heated air, air cleaned by filter filtration, humidified or dehumidified air, and the like. The present invention is applied to a case where air conditioning is performed under various conditions. According to the present invention, by supplying conditioned air in a room in parallel with the flow of room air flowing toward a heating element such as a computer, the diffusion of conditioned air can be reduced as much as possible, and the area to be air-conditioned can be made more efficient. Air conditioning can be improved.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In this embodiment, a personal air conditioner 3 for cooling and air-conditioning the air-conditioning target area 5 in the computer room 1 will be described as an example.
[0015]
As shown in FIG. 1, a computer 2 as a heating element is present inside a computer room 1. For this reason, in the computer room 1, a cooling load is required throughout the year due to heat generated by the computer 2. Although not shown, an air conditioner for cooling and air-conditioning the entire inside of the computer room 1 is provided, and the inside of the computer room 1 is maintained at a predetermined temperature by operating the air conditioner (not shown).
[0016]
In the computer room 1, air is heated near a heating element such as the computer 2 in a room that is constantly cooled and air-conditioned, so that an ascending airflow a is generated near the computer 2. Although the surface itself of the computer 2 is not so high in temperature, there is a radiator plate having a temperature of, for example, 50 ° C. or more inside the computer. The higher the temperature, the higher the temperature, and the air around the computer 2 is taken into the inside by natural convection through a gutter and heated to generate an ascending air current. Accordingly, an airflow b is generated below the inside of the computer room 1 (in the living area) such that room air flows laterally (in a direction parallel to the floor surface) toward the computer 2.
[0017]
The local air conditioner 3 according to the embodiment of the present invention supplies low-temperature conditioned air c to an air-conditioning target area 5 such as a work space or a work space where a person 4 is staying inside the computer room 1. It is configured to supply air and partially air-condition the air-conditioning target area 5 which is a part in the computer room 1. Inside the computer room 1, a blow-out unit 10 for supplying the conditioned air c toward the air-conditioned area 5 and an intake unit 11 located on the opposite side of the air-conditioned area 5 from the blow-out unit 10 are arranged. It is. An outlet 12 for local air-conditioning is opened at the front of the blow-off unit 10 (the surface facing the air-conditioning target area 5), and the front of the air intake unit 11 (the surface facing the air-conditioning target area 5). The mouth 13 is open.
[0018]
Here, the air-conditioning target area 5, the outlet 12 and the air inlet 13 are all set to the height of the living area (air-conditioning target area 5) below the inside of the computer room 1. , The outlet 12 and the inlet 13 are almost equal in height. Further, as shown in FIG. 1, the air outlet 12 and the air inlet 13 are arranged side by side on a horizontal straight line L connecting the air conditioning target area 5 and the computer 2. The outlet 12 is located on the straight line L at a position opposite to the computer 2 with the air-conditioning target area 5 interposed therebetween. The intake port 13 is arranged on the straight line L at a position between the air conditioning target area 5 and the computer 2. That is, the computer 2, which is a heating element, the air conditioning target area 5, the air outlet 12 of the blow-out unit 10, and the air inlet 13 of the air intake unit 11 are arranged on the same straight line L.
[0019]
An indoor unit 15 is arranged on the ceiling of the computer room 1. An air supply duct 16 is connected between the indoor unit 15 and the blowing unit 10, and a return air duct 17 is connected between the indoor unit 15 and the intake unit 11. In this embodiment, the conditioned air c cooled by the indoor unit 15 is supplied to the blowout unit 10 through the air supply duct 16, and the conditioned air c blown out from the blowout port 12 on the front face of the blowout unit 10 is supplied to the air conditioning target area 5. Is supplied with air. The air-conditioned air c that has passed through the air-conditioning target area 5 is sucked into the air-intake unit 11 from the air inlet 13 at a position opposite to the air outlet 12 across the air-conditioning target area 5, and passes through the return air duct 17. It is designed to be returned to the indoor unit 15.
[0020]
An outdoor unit 20 is provided above the outside of the computer room 1. In this embodiment, the outdoor unit 20 is installed immediately above the indoor unit 15 with a concrete slab (not shown) partitioning the ceiling of the computer room 1 therebetween. A refrigerant outgoing pipe 21, a refrigerant return pipe 22, and a drain pipe 23 are connected between the indoor unit 15 and the outdoor unit 20.
[0021]
As shown in FIG. 2, the indoor unit 15 includes a heat exchanger 30 and a fan 31. A drain pan 32 is mounted on the bottom of the indoor unit 15. By operating the fan 31, the air sucked into the indoor unit 15 from the return air duct 17 is sent to the air supply duct 16. Further, when the air passes through the indoor unit 15 in this manner, the air is cooled by being in thermal contact with the heat exchanger 30 to produce low-temperature conditioned air c. The drain water condensed on the surface of the heat exchanger 30 by cooling falls and is received by the drain pan 32.
[0022]
The outdoor unit 20 includes a heat exchanger 35 and a fan 36. An evaporation unit 37 is connected to the upstream side of the outdoor unit 20 (the left side of the outdoor unit 20 in FIG. 2), and an exhaust unit 38 is connected to the downstream side of the outdoor unit 20 (the right side of the outdoor unit 20 in FIG. 2). Is connected. Drain water received by the drain pan 32 in the indoor unit 15 is sent from the drain pan 32 to the upper part of the evaporation unit 37 through the drain pipe 23 by operation of a pump (not shown). The drain water sent to the upper part of the evaporation unit 37 is sprayed on the upper part of the evaporation unit 37. Inside the exhaust unit 38, a vane 39 for changing the blowing direction from a horizontal direction to an upward direction is attached.
[0023]
In the outdoor unit 20, the outside air is sucked into the outdoor unit 20 via the evaporation unit 37 by the operation of the fan 36, and is blown to the exhaust unit 38. By bringing the outside air having passed through the evaporating unit 37 into thermal contact with the heat exchanger 35, the refrigerant in the heat exchanger 35 is cooled. Then, the refrigerant cooled by the heat exchanger 35 passes through the refrigerant return pipe 22 and is sent to the heat exchanger 30 of the indoor unit 15. In addition, the refrigerant whose temperature has been increased by cooling the air in the heat exchanger 30 of the indoor unit 15 is sent to the heat exchanger 35 of the outdoor unit 20 through the refrigerant outward pipe 21. Although not shown, a pump or a compressor for pumping the refrigerant from the heat exchanger 30 of the indoor unit 15 to the heat exchanger 35 of the outdoor unit 20 is provided in the refrigerant outward pipe 21. The outside air blown to the exhaust unit 38 by the operation of the fan 36 in the outdoor unit 20 changes the blowing direction from sideways to upward by the vane 39 when passing through the exhaust unit 38, and thereafter, upwards from the upper surface of the exhaust unit 38. It is designed to be exhausted.
[0024]
As shown in FIG. 3, the blowout unit 10 is formed of a box formed in the blowout port 12 with an open front surface (the left side surface in FIG. 3). A vane 40 for changing the blowing direction from upward to horizontal is provided inside the blowing unit 10. Then, the conditioned air c blown from the indoor unit 15 described above via the air supply duct 16 is supplied downward into the blowout unit 10 via the upper surface of the blowout unit 10, and the blown air is directed upward by the vane 40. , And is blown out from the outlet 12 in the horizontal direction. A rectifying grid 41 having a configuration in which flat plates are combined vertically and horizontally in a grid pattern is attached to the front surface (blow outlet 12) of the blowing unit 10. The conditioned air c blown out from the outlet 12 is rectified when passing through the rectifying grid 41, and becomes a parallel flow toward the air conditioning target area 5.
[0025]
As described above with reference to FIG. 1, the air outlet 12 on the front of the air outlet unit 10 is directed to the air conditioning target area 5, and the air outlet 12 and the air inlet 13 are arranged on a straight line L connecting the air conditioning target area 5 and the computer 2. Due to the arrangement, the conditioned air c blown out from the outlet 12 in the horizontal direction flows along the straight line L and is supplied to the air-conditioning target area 5, further passes through the air-conditioning target area 5, and passes through the intake unit. The air is sucked into the intake unit 11 from the intake port 13 on the front of the unit 11.
[0026]
Now, inside the computer room 1 as described above, since the computer 2 as a heating element is present as described above with reference to FIG. 1, an upward airflow a is generated near the computer 2, Along with this, an airflow b in which room air flows laterally toward the computer 2 is generated below the inside of the computer room 1 (residential area).
[0027]
Then, in the local air conditioner 3, the conditioned air c cooled by the heat exchanger 3 in the indoor unit 15 is blown to the blowout unit 10 through the air supply duct 16 by the operation of the fan 31. The conditioned air c blown to the blow-out unit 10 is blown out from the blow-out port 12 on the front face of the blow-out unit 10 toward the air-conditioning target area 5 in the horizontal direction. Thus, the conditioned air c blown out from the outlet 12 flows along the straight line L connecting the air conditioning target area 5 and the computer 2 to reach the air conditioning target area 5.
[0028]
In this case, the situation around the conditioned air c supplied from the air outlet 12 to the air conditioning target area 5 is as follows. That is, as described above, a horizontal airflow b is generated below the inside of the computer room 1 (residential area), and this airflow b has a velocity component flowing laterally toward the computer 2. . The airflow b substantially follows the straight line L in the vicinity of the flow path connecting the air outlet 12 and the air inlet 13 (that is, in the vicinity of the horizontal straight line L connecting the air-conditioning target area 5 and the computer 2). It will have a velocity component. For this reason, there is an airflow b flowing in the same direction as the flow of the conditioned air c around the conditioned air c which is blown out from the outlet 12 and supplied to the air-conditioning target area 5. A state is formed in which the conditioned air c and the airflow b flow together while being wrapped by the airflow b.
[0029]
Here, as shown in FIG. 4, if air-conditioned air c is supplied from the air outlet 12 toward the air-conditioning target area 5 in a room where the airflow b is not generated, the indoor atmosphere is stationary. Then, the indoor atmosphere is induced and mixed around the conditioned air c by the difference in the relative speed, and reaches the air conditioning target area 5. Therefore, when the air-conditioning air c reaches the air-conditioning target area 5, the air-conditioning air c diffuses to increase the temperature, and the cooling effect is reduced. Further, in order to prevent such a decrease in the cooling effect, the cooling capacity must be increased excessively, and energy is wasted.
[0030]
As shown in FIG. 5, even in a room where the airflow b is generated, the conditioned air c is blown from the air outlet 12 in a direction that does not match the velocity component of the airflow b, and When the air-conditioning air c is supplied, the flow of the air-conditioning air c collides with the flow of the air-conditioning air c. Therefore, the flow of the air-conditioning air c is disturbed by the airflow b, and the air-conditioning air c reaches the air-conditioning target area 5. There is a fear that it will not work. In addition, the airflow b and the flow of the conditioned air c collide with each other, and the cooling effect is reduced.
[0031]
On the other hand, as shown in FIG. 6, in the case of this embodiment, the airflow having the same directional component as the flow of the conditioned air c flows around the conditioned air c blown from the outlet 12. Since the air-conditioned air c and the airflow b flow together toward the air-conditioning target area 5 while being wrapped by the air-conditioning b, the rate at which the air-conditioned air c induces and mixes the indoor atmosphere can be reduced. Further, since the flow of the conditioned air c is hardly disturbed, the conditioned air c can efficiently reach the air-conditioning target area 5. For this reason, the supply distance of the conditioned air c can be lengthened, and the conditioned air c can be supplied to the air conditioning target area 5 without mixing and diffusion, so that the temperature can be easily maintained.
[0032]
On the other hand, the air-conditioned air c that has reached the air-conditioning target area 5 flows along the straight line L while being wrapped by the airflow b even after passing through the air-conditioning target area 5. When the air reaches the intake unit 11, the conditioned air c is drawn into the intake unit 11 from the intake port 13 by the operation of the fan 31 provided in the indoor unit 15. Then, the conditioned air c is returned to the indoor unit 15 via the return air duct 17, cooled by the heat exchanger 3 and brought to a desired temperature, and is circulated again to the air conditioning target area 5. In this case, the air-conditioning air c can be collected in the intake unit 11 with as little mixing and diffusion as possible, so that the air is returned to the indoor unit 15 in a state where the temperature does not rise excessively. The load can be further reduced, and energy can be saved. In the illustrated example, since the intake unit 11 is interposed between the air conditioning target area 5 and the computer 2, it is determined that the radiant heat and the penetration heat of the computer 2, which is a heating element, are transmitted to the air conditioning target area 5. There is also an effect of being able to be blocked by the unit 11, and the heat of the person 4 staying in the air conditioning target area 5 is reduced.
[0033]
In the local air conditioner 3 according to this embodiment, the drain water condensed on the surface of the heat exchanger 30 in the indoor unit 15 is received by the drain pan 32 and sent to the upper part of the evaporation unit 37 through the drain pipe 23. Is done. The drain water thus sent to the upper part of the evaporating unit 37 is sprayed at the upper part of the evaporating unit 37 and evaporated by the outside air sucked into the outdoor unit 20. As a result, the dry-bulb temperature of the outside air sucked into the outdoor unit 20 can be reduced. As described above, by evaporating the drain water generated in the indoor unit 15 on the suction side (upstream side) of the outdoor unit 20, the suction temperature of the outdoor unit 15 is reduced, and energy savings can be expected to be improved by improving the coefficient of performance. In the case where the drain water is evaporated on the outlet side (exhaust) of the outdoor unit 15, there is an advantage that the drain water can be surely evaporated by the exhaust with high temperature and low humidity, and the reliability of the drain water treatment is improved. In any case, by draining the drain water generated in the indoor unit 15 in the outdoor unit 20, it is possible to omit drainage of the drain water to the outside, and the drain piping and the like are not required. In addition, as a method of evaporating the drain water, in addition to the spraying treatment in the evaporating unit 37 as described in this embodiment, a method using a drip-type humidifier, a method using water atomization by an ultrasonic generator, and the like. Is also possible. However, while the drain water itself has no mineral components and no scale generation, it contains a large amount of dust in the air, and therefore it is desirable to filter it with a filter.
[0034]
Further, in this embodiment, since the outdoor unit 20 is installed immediately above the indoor unit 15, the refrigerant outgoing pipe 21, the refrigerant return pipe 22, the drain pipe 23, and the like provided between them can be shortened. Costs can be reduced. In addition, there is an advantage that the movement and installation of the local air conditioner 1 are facilitated.
[0035]
Next, a local air conditioner 50 according to another embodiment of the present invention will be described. The local air-conditioning apparatus 50 shown in FIG. 7 synthesizes conditioned air blown out from a plurality of local air-conditioning outlets that blows out conditioned air, sends the synthesized air to the air-conditioning target area 51, and air-conditions the air-conditioning target area 51. It is configured as
[0036]
The room in which the local air conditioner 50 is provided is also a computer room 53 in which a computer 52 as a heating element exists, as in the case described above with reference to FIG. In order to process the cooling load caused by the heat generated by the computer 52, the entire inside of the computer room 53 is cooled and air-conditioned by the operation of an air-conditioning facility (not shown). Then, inside the computer room 53, an ascending air flow a is generated near the computer 52, and the room air is directed laterally toward the computer 2 (parallel to the floor) below the inside of the computer room 1 (residential area). Direction b).
[0037]
In this embodiment, two blow-off units 55 and 56 for blowing out conditioned air are installed inside the computer room 53. In addition, one intake unit 57 is arranged between the computer 2 and the air conditioning target area 5. Outlets 60 and 61 for local air conditioning are respectively opened on the front surfaces of the blowout units 55 and 56, and an inlet 62 is opened on the front surface of the intake unit 57.
[0038]
The air-conditioning target area 51, the outlets 60, 61 and the air inlet 62 are all set at the height of the living area (air-conditioning target area 51) below the inside of the computer room 53. The heights of the outlets 60, 61 and the inlet 62 are substantially equal. As before, rectifying grids are attached to the outlets 60 and 61, respectively, and the room air d1 and d2 blown out from the outlet units 55 and 56, respectively, are blown out as described later. When passing through, the flow is rectified by the rectification grid, and each of them is made a horizontal parallel flow.
[0039]
The intake port 62 is disposed on a horizontal straight line L connecting the air conditioning target area 51 and the computer 52 between the computer 52 and the air conditioning target area 51. On the other hand, an obstacle 65 such as a partition exists on a straight line L connecting the air-conditioning target area 51 and the computer 52 at a position opposite to the air intake port 62 on the coaxial line with respect to the air-conditioning target area 51. . For this reason, it is not possible to arrange an outlet for blowing out conditioned air for supplying air to the air conditioning target area 51 on the straight line L.
[0040]
For this reason, in the local air conditioner 50 shown in this embodiment, the two outlets 60 and 61 that blow out the conditioned air are arranged at positions that are all off the straight line L connecting the air conditioning target area 51 and the computer 52. The air-conditioning air blown out from the plurality (two in the figure) of the air outlets 60 and 61 is substantially the same height as the air-conditioning target area 51 and opposite to the computer 52 with the air-conditioning target area 51 interposed therebetween. (In other words, the position O on the straight line L and opposite to the computer 52 across the air-conditioning target area 51), and the synthesized air-conditioned air is supplied to the air-conditioning target area 51. I have to.
[0041]
As shown in FIG. 8, with respect to a straight line L connecting the air conditioning target area 51 and the computer 52, the inclination angle α formed by the velocity component of the room air d1 blown from the outlet 60 of the blow unit 55, and the blow unit 56 Assuming that the inclination angle β is formed by the velocity component of the room air d2 blown out from the air outlet 61, the following equation (1) holds.
[0042]
Q1 · V1 · sinα = Q2 · V2 · sinβ (1)
Here, Q1 is the flow rate of the room air d1 blown from the outlet 60 of the blowout unit 55, and V1 is the speed of the room air d1. Q2 is the flow rate of the room air d2 blown from the outlet 61 of the blowout unit 56, and V2 is the speed of the room air d2.
[0043]
By laying out each of the blow-out units 55 and 56 so as to satisfy the expression (1), the room air d1 blown from the blow-out port 60 and the room air d2 blown out from the blow-out port 61 are combined with the position O described above. And the combined conditioned air d flows along the straight line L and is supplied to the air conditioning target area 51.
[0044]
Also in this embodiment, the indoor unit 65 is disposed on the ceiling of the computer room 53 as in the case described above with reference to FIG. A duct 66 is connected. On the other hand, branch air supply ducts 67 and 68 are connected between the indoor unit 65 and the blowout units 55 and 56, respectively. Then, the air sucked into the intake unit 57 from the intake port 62 is sent to the indoor unit 65 through the return air duct 17, and the conditioned air d cooled by the indoor unit 65 is passed through the branch supply ducts 67 and 68. The conditioned air d1 and d2 are supplied to the blow-out units 55 and 56, respectively, and blow out from the outlets 60 and 61 on the front surface of the blow-out units 55 and 56, respectively.
[0045]
Similarly, in the inside of the computer room 53 as described above, an ascending airflow a is generated near the computer 52, and accordingly, in the lower part (living area) of the inside of the computer room 53, the indoor air is computerized. An airflow b flowing laterally toward the machine 52 is generated. In the local air conditioner 50, the conditioned air d cooled by the indoor unit 65 is supplied to each of the blowout units 55 and 56 via the branch air supply ducts 67 and 68, respectively, and the blowout ports at the front of the blowout units 55 and 56 are provided. The conditioned air d1, d2 blows out from 60, 61, respectively. Then, the room air d1 and the room air d2 are combined at the above-described position O, and the combined conditioned air d flows along the straight line L connecting the air-conditioning target area 51 and the computer 52 to the air-conditioning target area 51. Will be reached.
[0046]
Thus, similarly to the embodiment described with reference to FIG. 1 and the like, it is possible to create a state in which the periphery of the combined conditioned air d is wrapped by the airflow b having substantially the same directional component. The air-conditioning air d can be efficiently reached. Further, the conditioned air d that has passed through the air conditioning target area 51 in this way is drawn into the intake unit 57 from the intake port 62 and returned to the indoor unit 65 via the return air duct 17.
[0047]
According to the local air conditioner 50 of this embodiment, in addition to the same effects as those of the local air conditioner 3 of the embodiment described above with reference to FIG. Even if the air outlet that supplies air-conditioned air to the air-conditioning target area 51 cannot be arranged on the straight line L and exists on the straight line L connecting The state surrounding the conditioned air d can be created by b, and the air-conditioning target area 51 can be efficiently air-conditioned.
[0048]
The preferred embodiment of the present invention has been described above by way of example, but the present invention is not limited to the embodiment shown here. In the present invention, it is most preferable that the conditioned air blown out toward the local area has the same speed as the airflow generated in the room due to the effect of the heating element (airflow wrapping around the conditioned air). For example, it is effective to provide a flow rate adjusting damper in the air supply duct 16 shown in FIG. 1 and adjust the opening degree thereof to adjust the wind speed of the conditioned air c blown out from the outlet 12. Further, a method of controlling the air flow of the fan 36 provided in the indoor unit 15 by an inverter may be used.
[0049]
In the present invention, it is not always necessary to suck the conditioned air at a position on the opposite side of the conditioned air blowing position across the air-conditioning target area. For example, in FIGS. 1 and 7, the air supply units 11 and 57 are not arranged on the straight line L, but the air inlets are arranged on the ceiling of the room, for example. Air or outside air may be taken in, and the air may be cooled and supplied locally.
[0050]
In the present invention, the heating element existing in the room may be, for example, a heating furnace or various production apparatuses that generate heat, and is not limited to the computer 2. The room for performing local air conditioning according to the present invention is not limited to the computer room 3. The present invention is also applicable to various rooms such as a clean room where various heating elements exist.
[0051]
Although FIGS. 7 and 8 illustrate an example in which two blowout units 55 and 56 are provided, the number of blowout units is not limited to two. Three or more blowout units may be installed, and the air-conditioning air for local air-conditioning blown out from three or more blowout ports may be combined and sent to the air-conditioning target area. When the flow rate Q1 and the speed V1 of the room air d1 blown from the blow-out unit 55 described in FIGS. 55 and 56 are arranged at symmetrical positions with respect to a straight line L connecting the air conditioning target area 51 and the computer 52, and the indoor air d1 and the indoor air By synthesizing at the position O on the straight line L opposite to the computer 52 across the region 51, an isosceles triangle having the position O as the apex (the side connecting the position It is preferable to arrange the blowout units 55 and 56 so as to form an isosceles triangle whose length is equal to the length of the side connecting the blowout unit 56 and the position O). By adopting a similar arrangement, an even number of blowout units, such as four blowout units and six blowout units, are arranged in pairs, and are used for local air conditioning blown out from each blowout port. The air-conditioned air may be synthesized and sent to the air-conditioning target area. If the pair of outlet units cannot be arranged symmetrically with respect to the straight line L, as described above with reference to FIG. 8 and equation (1), the indoor air blown from the outlet of each outlet unit The flow rate and speed may be adjusted.
[0052]
Further, in each of the embodiment described with reference to FIG. 1 and the like and the embodiment described with reference to FIG. In addition to the case where the target area is locally cooled and heated, the air-conditioning target area such as a clean booth is supplied with clean air, and the air-conditioning target area is maintained at a predetermined humidity. It can be applied to local air conditioning. Even in such a case, the air conditioning efficiency is improved and energy saving is achieved by allowing clean air or air with a predetermined humidity to reach a remote place / area (area to be air-conditioned) without diffusion. be able to. When clean air is supplied to an air-conditioning target area such as a clean booth, a dust removal filter may be used instead of the heat exchanger provided in the indoor unit in the above-described embodiment. If the area is kept at a predetermined humidity, a humidifier or a dehumidifier may be used instead of the heat exchanger. In this case, for example, various types of dehumidifiers such as a dry dehumidifier, a wet dehumidifier, and a pressure swing dehumidifier can be used.
[0053]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, in a room where a heating element exists, it becomes possible to efficiently local air-condition a region to be air-conditioned without diffusing conditioned air as much as possible.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state where a local air conditioner according to an embodiment of the present invention is installed in a computer room.
FIG. 2 is an explanatory diagram of an indoor unit and an outdoor unit.
FIG. 3 is a vertical cross-sectional view of a blowing unit.
FIG. 4 is an explanatory diagram of a state in which conditioned air is diffused when conditioned air is supplied to a region to be air-conditioned in a room where no airflow is generated.
FIG. 5 is an explanatory diagram of a state in which the flow of the conditioned air is disturbed when the conditioned air is blown out in a direction that does not match the airflow generated in the room.
FIG. 6 is an explanatory diagram of a state in which conditioned air is supplied to an air conditioning target area while wrapping the surroundings with an airflow.
FIG. 7 is a perspective view showing a local air-conditioning apparatus according to another embodiment of the present invention, which is configured to synthesize conditioned air blown out from a plurality of outlets and send the air to an air-conditioning target area.
FIG. 8 is an explanatory diagram of a relationship between room air blown out from each outlet in the local air conditioner according to the embodiment of the present invention shown in FIG. 7;
[Explanation of symbols]
a Updraft
b airflow
c Air conditioning air
1 computer room
2 Computer
3 local air conditioners
4 people
5 Air conditioning target area
10 blowout unit
11 Intake unit
12 outlet
13 Inlet
15 indoor units
16 Air supply duct
17 Return air duct
20 outdoor units
L A horizontal straight line connecting the air conditioning area and the computer

Claims (6)

A local air-conditioning method for supplying air to a room in which a heating element is present, and air-conditioning a specific area in the room at a position distant from the heating element,
A local air-conditioning method, characterized in that air-conditioned air is supplied from a side opposite to the heating element with the area interposed therebetween in a direction connecting the area and the heating element. The local air-conditioning method according to claim 1, wherein a plurality of air-conditioned air flows are combined to supply air to the area. 3. The local air-conditioning method according to claim 1, wherein the air-conditioned air passing through the area is sucked at a position opposite to a position where the air-conditioned air is blown across the area. A local air conditioner for supplying air to a room in which a heating element is present and for air-conditioning a specific area in the room at a position distant from the heating element,
A local air-conditioning outlet for blowing air-conditioned air is provided at a position substantially the same height as the region and opposite to the heating element with the region interposed therebetween;
The local air conditioner is characterized in that the blowing direction of the local air conditioning outlet is directed to a direction connecting the area and the heating element. A local air conditioner for supplying air to a room in which a heating element is present and for air-conditioning a specific area in the room at a position distant from the heating element,
The air outlet for local air conditioning that blows out the conditioned air is installed at multiple locations,
The plurality of local air-conditioning units are configured such that the conditioned air blown out from each local air-conditioning outlet is synthesized at a position substantially the same height as the region and opposite to the heating element across the region. The outlet direction of the air outlet
Further, the plurality of local air-conditioning air outlets are respectively arranged such that the flow of the air-conditioned air synthesized from the air-conditioning air blown out from each of the local air-conditioning air outlets is directed in a direction connecting the area and the heating element. A local air conditioner, characterized in that: 6. The local air conditioner according to claim 4, wherein an intake port for sucking conditioned air passing through the area is provided between the area and the heating element.

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