JP4017921B2 - Air circulation device in heating room - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for mitigating uneven temperature distribution in a room where heating operation is performed.
[0002]
[Prior art]
In a room where heating operation is performed in winter, warm air tends to accumulate near the ceiling surface, and the temperature decreases near the floor surface, and variations in temperature distribution tend to occur in the height direction. In particular, the recent spread of OA equipment tends to promote the occurrence of such uneven temperature distribution in the room.
[0003]
On the other hand, especially in offices where the heat generated by the interior is large, the heating load is increased near the side surface with windows, etc. due to the influence of the thermal load on the outer wall, compared to the interior zone. Conventionally, various devices have been studied in order to reduce the temperature drop near the floor surface while reducing the external wall heat load during such heating operation.
[0004]
[Problems to be solved by the invention]
However, most of the conventional devices require a large number of equipment such as ducts, and there is a problem that initial cost and running cost are increased. In addition, there is a problem that these devices are forced to undergo major modifications such as duct arrangement and control system in order to be applied to existing buildings, and in addition, office relocation and redesign are normal. There is also the problem of having to devote themselves to plans that anticipate that response.
[0005]
An object of the present invention is to provide an apparatus that can alleviate uneven temperature distribution in a room where heating operation is performed with simple equipment.
[0006]
[Means for Solving the Problems]
The air circulation device for a heating room according to the present invention includes a fan that blows air along the ceiling surface toward the upper part of the side surface in which the indoor window is formed , near the ceiling surface of the room where the heating operation is performed. the top of the chamber near the side window is formed to produce a downward flow by the blowing of the downflow arranged rectifying member for the downward flow of the parallel layered along the window, is rectified along the window lowering In the layered air, a temperature gradient that is almost proportional to the distance from the window is formed, and the downflow that has reached the vicinity of the floor is mixed again. And flow downward in the room. The flow regulating member may have a vane plate in a posture parallel to the window.
[0007]
In this air circulation device, the air that is blown by the operation of the fan and flows along the ceiling surface changes direction and becomes a downward flow when it reaches the upper part near the side surface of the room. The side surface of the room where the downward flow is generated in this way is a side surface that is affected by the external wall heat load, and a window is formed on this side surface. Then, the downward flow generated in the vicinity of the side surface in this way is made parallel flow by the rectifying member disposed in the upper portion near the side surface of the room and then descends along the side surface of the room.
[0008]
On the other hand, the air descending along the side surface of the room in this way is in thermal contact with the window or the like cooled by the outside air and is affected by the external wall heat load, and the air that is descending gradually becomes colder . In this case, since the parallel flow along the side surface is formed by the rectifying member described above, the air descending near the side surface of the room out of the air passing through the rectifying member flows in the vicinity of the side surface in the room. The air is cooled to about the same temperature as the side surface, but becomes hot as it moves away from the side surface, and the air that flows sufficiently away from the side surface in the room (for example, the air that has passed through the rectifying member and is in contact with the indoor side) Without being affected by the heat load on the outer wall, the high temperature supplied from near the ceiling remains unchanged. Thus, while descending along the side surface of the room, a temperature gradient is formed in the descending air that becomes higher as the distance from the side surface increases.
[0009]
Then, the air descending near the side surface of the room in this way is mixed again when it reaches the vicinity of the floor surface, changes its direction, flows along the floor surface below the room, and is supplied to the feet of the occupants. At that time, as described above, air with a temperature gradient that increases in temperature as it moves away from the side surface of the room is mixed, and the air that flows in the immediate vicinity of the side surface and becomes low temperature in the room is located sufficiently away from the side surface. By mixing the high-temperature air that is supplied from the vicinity of the ceiling surface and is supplied from the vicinity of the ceiling surface, high-temperature air that does not impair the comfort can be blown to the vicinity of the floor surface. As a result, the cold in the feet of the occupants is reduced, and the uneven temperature distribution in the vertical direction from the indoor ceiling to the floor can be mitigated.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view schematically showing an air flow state generated in a room 1 having an air circulation device according to an embodiment of the present invention. FIG. 2 is a state in which the air circulation device is installed in the room 1. FIG.
[0011]
In the illustrated embodiment, a normal office space or the like is illustrated as the room 1. In the room 1 formed between the ceiling surface 10 and the floor surface 11, there are occupants 12 who operate OA devices and the like. A ceiling beam 15 is provided substantially at the center of the ceiling surface 10. The fan 17 is disposed near the ceiling surface 10 in the room 1 by suspending the fan 17 via the bracket 16 below the ceiling beam 15. The fan 17 is a means for sucking in the conditioned air and circulating it in the room 1. The fan 17 is provided with a rotor blade 18. When the fan 17 is rotated by the operation of the fan 17, the air near the ceiling surface 10 is leveled. Alternatively, the air is blown slightly upward from the horizontal. Thus, the air blown by the operation of the fan 17 is blown in a substantially horizontal direction in the room 1 so as to crawl the lower surface of the ceiling surface 10 by the Coanda effect.
[0012]
In the illustrated embodiment, the fan 17 is operated to blow air leftward in FIG. The air blown to the vicinity of the upper part of the left side surface 20 of the room 1 along the ceiling surface 10 reaches the upper part of the left side 20 of the room 1 and hits the upper part of the inner wall (left side 20) of the room 1, Sequentially turning downward by about 90 °, it becomes a downward flow. The air that has flowed down in this way is blown downward along the left side 20 near the left side 20 of the room 1.
[0013]
In FIG. 1, the left side surface 20 of the room 1 is formed as a window surface provided with a window 21. In this embodiment, as shown in FIG. 2, the windows 21 are arranged side by side so as to cover the entire width of the left side surface 20. As described above, the air that is turned downward near the upper portion of the left side surface 20 and blown downward along the left side surface 20 flows downward in the vicinity of the window 21 in the room 1.
[0014]
Further, on the upper part of the left side surface 20 formed on the window surface in this manner, a rectifying member that makes the downward flow blown along the left side surface 20 (window 21) into a parallel downward flow along the left side surface 20. 25 is arranged.
[0015]
3 is a perspective view of the rectifying member 25, and FIG. 4 is a cross-sectional view taken along the line AA in FIG. The illustrated rectifying member 25 has a configuration in which a vane plate 27 is mounted in the longitudinal direction of a rectangular frame 26. The frame body 26 is open at the top and bottom surfaces so that air can pass through without resistance from the top to the bottom. In the example shown in the figure, two vane plates 27 are arranged substantially vertically and parallel to each other inside the frame 26.
[0016]
In the illustrated embodiment, as shown in FIG. 4, the angle of each vane plate 27 is configured to be variable with respect to the frame body 26. 3 and 4 show an example in which two vane plates 27 are arranged inside the frame body 26, the number of vane plates 27 arranged inside the frame body 26 is, for example, 1 to 4. About 5 sheets. In the example shown in FIG. 2, the rectifying member is manufactured by dividing 25 into four parts according to the length of the surface of the window 21 that is a thermal load, thereby facilitating attachment.
[0017]
As shown in FIG. 2, in the upper part of the left side surface 20 of the room 1, the rectifying member 25 is positioned above the window 21 (however, separated from the room 1 by a not-shown blind box). It is attached. Further, the rectifying member 25 is also attached over the entire lateral width of the left side surface 20 so as to correspond to the windows 21 arranged over the entire lateral width of the left side surface 20. By attaching the rectifying member 25 to the upper part of each window 21 in this way, the vane plate 27 attached to the rectifying member 25 is installed in a posture parallel to the left side surface 20 (window 21).
[0018]
As shown in FIG. 1, the right side of the room 1 is partitioned by a partition 30. A hallway 31 is formed on the back of the partition 30.
[0019]
In addition, a direct-blowing floor-mounted air conditioner 35 is disposed at one corner of the room 1. A heat exchanger 36 and a blower fan 37 are provided inside the air conditioner 35. A heat medium is circulated and supplied to the heat exchanger 36 from the pipes 40 and 41 arranged in the upper part of the hallway 31 through the forward pipe 42 and the return pipe 43. Then, by operating the blower fan 37, the air in the room 1 is sucked into the air conditioner 35 from the air inlet 45 below the air conditioner 35 (located near the floor 11), and the air is heated by the heat exchanger 36. The heated air is blown out from the air supply port 46 at the top of the air conditioner 35 toward the room 1. Note that the air supply port 46 of the air conditioner 35 is at a height of about 1800 mm from the floor surface 11, and the warm air blown from here is the ceiling beam 15 in the case of the fan 17 without the fan 17. Try to stay on the interior side of the. By providing the suction port of the fan 17 toward the air supply port 46 of the air conditioner 35 (lower left in FIG. 1), the warm air and the ambient air are attracted and the stagnation of the warm air around the ceiling beam 15 is eliminated.
[0020]
Now, in the room 1 configured as described above, the heated air blown into the room 1 from the air supply port 46 at the top of the air conditioner 35 is blown out by the operation of the blower fan 37 built in the air conditioner 35. Normal heating operation is performed. In the room 1 in which such heating operation is performed, warm air tends to accumulate near the ceiling surface 10, while temperature tends to decrease near the floor surface 11.
[0021]
Therefore, in the room 1 in which such heating operation is performed, the rotating blades 18 are rotated by the operation of the fan 17 disposed in the vicinity of the ceiling surface 10, so that the room 1 tends to accumulate in the vicinity of the ceiling surface 10. Warm air is blown in a substantially horizontal direction along the ceiling surface 10 toward the vicinity of the upper portion of the left side surface 20. Further, the air blown along the ceiling surface 10 in this way attracts the air in the vicinity of the ceiling surface 10 of the room 1 and also conveys the attracted air toward the upper portion of the left side surface 20 together. To go.
[0022]
Thus, the air blown by the operation of the fan 17 and flowing along the ceiling surface 10 (warm air near the ceiling surface 10), when reaching the upper part near the left side surface 20 of the room 1, gradually turns downward by about 90 °. However, it becomes a downward flow. Thus, the air that has flowed down descends along the left side 20 near the left side 20 of the room 1 and is blown downward near the window 21.
[0023]
On the other hand, when the air flowing in the vicinity of the left side surface 20 of the room 1 is blown downward in the vicinity of the window 21 as described above, the air flows through the rectifying member 25 attached to the upper portion of the window 21 from the top to the bottom. Will pass. Thus, when passing through the flow regulating member 25, air flows along the vane plate 27 arranged vertically, so that the air blown around the left side surface 20 of the room 1 is forced to the window 21. It is made into the parallel laminar downward flow along (left side 20).
[0024]
On the other hand, while descending along the left side surface 20 of the room 1 in this way, it is in thermal contact with the window 21 or the like that is cooled by the outside air, and is affected by the external wall thermal load. The air gradually gets colder. In this case, since the parallel flow is formed by the rectifying member 25 described above, the temperature T of the air flowing in the immediate vicinity of the window 21 while descending the vicinity of the left side surface 20 of the room 1 is as shown in FIG. The temperature T of the air flowing in a position sufficiently separated from the window 21 in the room 1 is as follows. Without being affected by the heat load on the outer wall, the hot air supplied from the vicinity of the ceiling surface 10 remains in a hot state. Thus, in the layered air that is rectified and descending along the left side surface 20 of the room 1, there is a temperature gradient that the temperature T of the descending air becomes high in proportion to the distance X from the window 21. It is formed.
[0025]
The air descending in the vicinity of the left side surface 20 of the room 1 in this way is mixed again when it reaches the vicinity of the floor surface 11, and is converted into a substantially horizontal direction of 90 ° and flows below the room 1 along the floor surface 11. . In this way, the air that has flowed under the room 1 is supplied to the feet of the occupants 12. In this case, as described above, a temperature gradient is formed in the air descending along the left side surface 20 of the room 1 by the action of the rectifying member 25, so that it reaches the vicinity of the floor surface 11 and is mixed. In this case, the air that has flowed in the immediate vicinity of the window 21 and becomes cold and the high-temperature air (warm air) that has flowed away from the window 21 can be mixed, so that comfort is not impaired. Hot air can be blown near the floor 11. As a result, the cold in the feet of the occupant 12 is reduced, and the uneven temperature distribution in the room 1 can be alleviated.
[0026]
Assuming that there is no rectifying member 25, the air flowing along the ceiling surface 10 by the operation of the fan 17 changes direction at the upper part of the room 1 near the left side surface 20 as shown in FIG. However, since the downward flow is not provided with the rectifying member 25, a large amount of vortex or the like is generated when the air is blown downward near the left side surface 20 of the room 1. For this reason, the air flowing in the vicinity of the left side surface 20 of the room 1 is agitated while descending. And by this stirring action, while descending along the left side 20 of the room 1, the entire air flowing in the vicinity of the left side 20 of the room 1 is in thermal contact with the window 21 cooled by the outside air, It will be affected by the external wall heat load. As a result, the window 21 that does not need to be heated is heated with a large amount of air. Further, in the air descending along the left side surface 20 of the room 1, a temperature gradient proportional to the distance X from the window 21 is not formed, and the temperature T of the air flowing in the immediate vicinity of the window 21 and the room 1, the temperature T of the air flowing through the position away from the window 21 is considerably low. Then, after such low temperature air reaches the vicinity of the floor surface 11, the direction is changed, the air flows along the floor surface 11, and is supplied to the feet of the occupants 12 to cool the feet. Become. In addition, in order to avoid such an adverse effect of cooling the feet, it is necessary to further increase the capacity of the air conditioner 35.
[0027]
In this regard, if the rectifying member 25 as in the embodiment of the present invention is used, the parallel flow is formed by the rectifying member 25 as described above with reference to FIG. A temperature gradient in which the temperature T becomes high in proportion to the distance X from the window 21 can be formed in the descending air, and the outer wall heat load is applied to the air flowing away from the window 21. It is possible to prevent the influence of. As a result, the influence of the external wall heat load can be reduced. Further, even if the heating capacity of the air conditioner 35 is not increased more than necessary, it is possible to reduce the cold of the occupants 12 and to reduce the temperature distribution unevenness in the room 1.
[0028]
As mentioned above, although an example of preferable embodiment of this invention was demonstrated, this invention is not limited to the illustrated form. For example, the number and position of the fans 17 arranged in the vicinity of the ceiling surface 10 of the room 1 are arbitrary, and it is only necessary to blow air toward the upper part of the side surface of the room 1 that is affected by the heat load on the outer wall. Appropriately selected according to the shape and size. For example, a plurality of fans 17 may be installed near the ceiling surface 10 of the room 1. In this case, when there are a plurality of side surfaces in the room 1 that are affected by the outer wall thermal load, the air may be blown toward the upper portions of the respective side surfaces, and the air may be lowered along the respective side surfaces. Further, the fan 17 may be provided with a swing function so that a single fan 17 can blow air over a wide range as shown in FIG. For example, the fan 17 can be used by assembling a cross flow fan to a width corresponding to the width of the window 21, or a plurality of fans 17 can be arranged in the width direction. Further, warm air may be supplied to an area corresponding to the width of the window 21 by providing a swing mechanism for one axial fan. However, even if only one fan 17 is installed in a fixed manner in order to save costs, there is a certain effect because it spreads after the warm air hits the wall. Further, in the illustrated equipment, the fan 17 is attached to the beam 15 so as to be applied to a so-called direct ceiling equipment in which the ceiling board is not attached. However, in the case of applying to the equipment in which the ceiling board is attached, the fan 17 and the rectifying member 25 are appropriately connected. Can be supported by
[0029]
Further, the height (vertical distance) of the vane plate 27 provided in the rectifying member 25 may be, for example, about 25 to 100 mm, and about 1 to 5 sheets within a range of about 200 to 400 mm from the side surface of the room 1. The vane plates 27 are preferably arranged in parallel at equal intervals. The length of the vane plate 27 (the distance in the horizontal direction) may be appropriately set to a length that is easy to use. The vane plate 27 is arranged in parallel to the side surface of the room 1, but another vane plate may be provided so as to be orthogonal to the vane plate 27, and the rectifying member 25 may be configured in a lattice shape. As shown in FIGS. 1 and 2, when a space (blind box space) 50 for attaching a blind is formed on the upper portion of the window 21, the rectifying member 25 is disposed on the space 50. Good. If it does so, when attaching a blind to the window 21, the baffle member 25 will not become obstructive. In the cooling operation, if the fan 17 is stopped, the cooling is not affected.
[0030]
【The invention's effect】
According to the present invention, although it is a simple facility, warm air that tends to accumulate near the ceiling surface of the room is supplied along the floor surface while being maintained at a high temperature without being affected by the thermal load of the outer wall as much as possible. Therefore, it is possible to alleviate the uneven temperature distribution in the room and to reduce the coldness of the occupants' feet. In particular, the device according to the present invention is not only simple and inexpensive, but also can be easily dealt with when changing patterns such as partitioning and rearrangement, and can be installed without changing existing air-conditioning equipment. .
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view schematically showing an air flow state generated in a room provided with an air circulation device according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a state in which an air circulation device is installed in a room.
FIG. 3 is a perspective view of a rectifying member.
4 is a cross-sectional view taken along the line AA in FIG. 3;
FIG. 5 is an explanatory diagram showing a state in which a temperature gradient is formed in the air that is forced into a parallel downward flow along the window by the rectifying member and becomes hot in proportion to the distance from the window. is there.
FIG. 6 is an explanatory diagram of a temperature distribution generated in the air descending along the window when there is no rectifying member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Indoor 10 Ceiling surface 11 Floor surface 12 Residents 15 Ceiling beam 17 Fan 20 Left side surface 21 Window 25 Rectification member 26 Frame 27 Vane board 30 Partition 31 Corridor 35 Air conditioner 36 Heat exchanger 37 Blower fan

Claims (2)

Near the ceiling surface of the room heating operation is performed, a fan for blowing air is arranged along the ceiling surface toward the top of the sides of Window is formed, indoor windows resulting in downward flow by the blowing of the fan A rectifying member for arranging the downward flow into a parallel laminar downward flow along the window is disposed near the formed side surface .
A temperature gradient approximately proportional to the distance from the window is formed in the layered air that is rectified and descends along the window, and the descending flow that has reached the floor surface is mixed again, so that it is 90 ° horizontally. An air circulation device in a heating room, which changes direction and flows downward along the floor surface . The air circulation device in a heating room according to claim 1, wherein the rectifying member has a vane plate in a posture parallel to the window .

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