JP3006684B2 - Air conditioner with outside air blowing unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air conditioner with an outside air blowing unit.

[0002]

2. Description of the Related Art When air-conditioning a room such as a store, it is necessary to introduce outside air into the room, in addition to controlling the temperature by blowing cool and warm air from an air conditioner. For this reason, conventionally, an outside air outlet is provided separately from the cool / warm air outlet on the ceiling in the room. However, there is a problem that the equipment cost and installation work are extra, and the beauty of the ceiling surface is impaired. In addition, since the cold / hot air outlet and the outside air outlet are located at different locations, there is a problem that the respective air is unevenly distributed in the room and temperature unevenness occurs.

[0003] Further, the conventional air conditioner uses a heat exchange coil having a heat transfer tube having a heat transfer medium having a circular cross section.
In particular, since the shape drag is large, there is a problem that a separation region of an air flow called a dead water region is enlarged, a heat exchange loss is increased, a dynamic pressure is increased, and a running cost is increased. Therefore,
An object of the present invention is to provide an air conditioner that solves the above problems.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a ceiling-mounted air conditioner that exchanges heat with air to blow cold air or warm air into a room. And an outside air blowing passage was formed in the inside of the machine and connected to the air outlet of the machine and the outside air inlet, and the outside air inlet was connected to the ventilation unit or the outside air processing air conditioner. Further, in a ceiling-mounted air conditioner that exchanges heat with air to blow cool air or warm air into a room, an outside air intake port is formed in the airframe and an airflow path is formed in the airframe to blow the air. The outlet was connected in communication with the outside air inlet, and the outside air inlet was connected to the ceiling plenum chamber. Further, a blower was provided in the outside air blowing path. Further, the fuselage was formed in a box shape, and the internal space of the fuselage was divided into two or four along a diagonal line to form a heat exchange ventilation passage and an outside air ventilation passage. Further, the cross section of the heat transfer tube of the heat exchange coil was formed in an elliptical shape.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 show an embodiment of the outside air blowout unit with an air conditioner according to the present invention, the cold air or warm air by the air heat exchanger instead chamber In the ceiling-mounted type air conditioner that blows air to the
And an outside air blowing passage 3 is formed in the body 1 so as to communicate with the air outlet 4 of the body 1 and the outside air intake 2,
The outside air intake 2 is connected to a ventilation unit 5 through a duct or the like.
Alternatively, it is connected to an outside air processing air conditioner (not shown).

Specifically, as shown in FIGS. 3 and 4, an air outlet 4 and a suction port 6 are formed at the bottom of the body 1 facing the room.
An outside air intake 2 is formed on a side of the body 1 facing the ceiling.
A heat exchange air passage 7 and an outside air air passage 3 are horizontally arranged in the hollow body 1. A blower 8 and a heat exchange coil 9 are provided in the heat exchange blower 7 by connecting the outlet 4 and the inlet 6 to each other, and the blower 10 is connected to the outside air blower 3 by connecting the outlet 4 and the outside air inlet 2. Is provided.

The fuselage 1 is formed in a square box shape, and the internal space of the fuselage 1 is divided along a diagonal line by a partition plate 14 and divided into two portions in the horizontal direction. A heat exchange blower path 7 is formed and a blower 8 is provided, and an outside air blower path 3 is formed in the other substantially triangular divided portion and a blower 10 is provided.

The heat exchange air passage 7 has an inner space 16 and an upper space 1 formed by partitioning one of the divided portions by a partition member 15.
7 and the outer vacant space 18 are connected so as to form an inverted U-shape. The inner chamber 16 is connected to the suction port 6 and the outer chamber 18 is connected to the outlet 4. A blower 8, a heat exchange coil 9 and a drain pan 22 are provided in the upper chamber 17, and a filter 23 is provided in the inner chamber 16.

The outside air blowing passage 3 has an upper vacant space 20 and a lower vacant space 2 formed by partitioning the other divided portion by a partition member 19.
1 are connected and connected in a laterally inverted U-shape. The upper vacant space 20 is connected to the outside air intake 2 and the lower vacant space 21 is connected to the outlet 4. A filter 24 is provided in the upper chamber 20, and a blower 10 is provided in the lower chamber 21.

The machine body 1 includes a box body 11 having an opening at the bottom, an annular panel frame body 12 having an elongated outlet 4 at the outer edge and attached to cover the lower opening of the box body 11. ,
A central panel 13 is attached to the central opening of the panel frame 12 so as to be openable and closable and forms a square annular suction port 6. The air conditioner is installed in a suspended state on a solid portion 25 of a building via hanging bolts or the like, and the lower surface of the panel frame 12 is exposed to the room through an opening of a ceiling plate. The white arrow in FIG. 3 indicates the direction of air flow.

[0011] the air conditioner is operated, the blower 8, the indoor air (instead of air) is sucked from the intake port 6, air passes through the heat exchange coil 9 which is heat exchanged (cooled air or warm air)
Is supplied from the outlet 4 to the room. 2 and 3
As shown in (1), the outside air sent from the outside air processing air conditioner or the blower 27 of the ventilation unit 5 enters through the outside air intake 2, passes through the outside air blowing path 3, and is supplied into the room from the outlet 4. At this time, the blower 10 of the air conditioner is used as a booster fan for supplementing insufficient air volume and static pressure of the blower 27 of the outside air processing air conditioner or the ventilation unit 5. The blower 27
If the air blower has sufficient capacity to supply outside air,
May be omitted (not shown).

In the embodiment of FIG. 2, the ventilation unit 5 or the outside air processing air conditioner is omitted, and the ceiling is formed in a ceiling plenum chamber D as shown in FIG. It may be used as a chamber, and the outside air intake 2 may communicate with the ceiling plenum chamber D. in this case,
By the blower 10, the outside air or the air after the outside air in the ceiling plenum chamber D enters through the outside air intake 2, passes through the outside air blowing passage 3, and is supplied into the room from the outlet 4.

In each of the above-described embodiments, as shown in FIG. 6, the heat exchange coil 9 is a plate fin coil, and the radially cut surface of the heat medium flow heat transfer tube 26 that comes into contact with the blowing air has an elliptical shape. Form. It is most preferable that the major axis direction of the elliptical shape be substantially parallel to the blowing direction P in order to reduce the air resistance. As a result, the resistance when air passes through the heat exchange coil 9 is reduced, so that a rise in dynamic pressure can be prevented, and the air flow separation area called dead water area indicated by the reference numeral F is reduced, and the heat exchange loss is reduced. Moreover, if the blower 8 (see FIG. 3) is a turbo blower, a high static pressure can be obtained, the pressure loss in the heat exchange coil 9 is small, and the running cost can be greatly reduced. Here, the ellipse in the present invention includes an ellipse close to a rhombus and a so-called oval shape in which both short sides of a rectangle protrude outward.

In the embodiment of FIGS. 2 and 5, FIG.
As shown in the figure, the internal space of the fuselage 1 is divided in an X shape along a diagonal line by a partition plate 14 and divided into four parts in the horizontal direction.
A heat exchange blower path 7 is formed in each of the substantially triangular divisions, and a blower 8 is provided. A blower 10 is formed in each of the remaining two substantially triangular divisions by forming the outside air blower path 3. May be provided. When the blower 10 is not used as a booster fan, it can be omitted or used freely. Outside air passage 3, 3
If the heat exchange air passages 7 and 7 are arranged to face each other as shown in the figure, the bias of the air flow distribution between the cool / warm air and the outside air can be further reduced, but they can be arranged adjacently.

The present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. Although not shown, the outside air intake 2 may be formed in a portion other than the side surface of the body 1, and may be configured to blow cold / warm air and outside air from the same outlet 4. Also,
The body 1 may be a polygonal box other than a square. Further, the cut surface in the radial direction of the heat medium flow heat transfer tube 26 may be any shape other than an ellipse, and the blowers 8 and 10 may be blowers other than the turbo blower.

[0016]

According to the first to fourth aspects of the present invention, since a single air conditioner can perform both the blowing of cold and warm air and the blowing of outside air, there is no need for a dedicated outlet for outside air on the ceiling, thus simplifying the air conditioning equipment. Equipment and installation costs can be reduced and labor can be saved, and the ceiling surface is neat and the design feel is improved. In addition, since the cool / warm air and the outside air are blown out from the same place, the respective air is distributed evenly throughout the room, and temperature unevenness can be eliminated. Blower with larger air flow than rectangular section
The air conditioner can be made more compact. Horizontal
By dividing in the direction, flattening can be achieved and high
It can be easily installed even in low ceilings. Dead water even at high wind speeds
The heat exchange loss can be reduced with a small area and the heat exchange capacity can be improved.
In addition to being able to plan, the air resistance at the time of coil ventilation decreases,
Dramatically reduce the power consumption (running cost) of the blower
Energy saving and resource saving. High wind speed
Can be used with conventional coils with the same maximum air flow.
Compared to coil and air conditioner, more compact and lower cost
And a coil having the same coil cross-sectional area
The maximum air volume can be increased compared to conventional coils.
You. In the inventions of claims 2 and 4, the blower 10 is further provided in a booth.
It can be used as a fan and has a long blowing distance
Even if the ventilation resistance is high, the outside air can be reliably
obtain. According to the fifth aspect of the present invention, the airflow distribution of the cool / hot air and the outside air is provided.
Can be further reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of an air conditioner of the present invention.

FIG. 2 is a side view of the embodiment of FIG.

FIG. 3 is a side sectional view of a main part of the embodiment of FIG. 1;

FIG. 4 is a simplified plan view of the embodiment of FIG.

FIG. 5 is a side view of another embodiment.

FIG. 6 is a sectional view of a main part of a side surface of the heat exchange coil.

FIG. 7 is a simplified plan view of another embodiment.

[Explanation of Signs] 1 Airframe 2 Outside air intake 3 Outside air ventilation path 4 Outlet 5 Ventilation unit 7 Heat exchange ventilation path 9 Heat exchange coil 10 Blower 26 Heat medium flow heat transfer tube D Ceiling plenum chamber 12

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-210405 (JP, A) JP-A-10-26366 (JP, A) JP-A 5-73422 (JP, U) JP-A 53- 46761 (JP, U) Japanese Utility Model Showa 62-36313 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 431

Claims (5)

(57) [Claims] 1. Heat exchange between return air and cool air or warm air into the room
In the ceiling-mounted air conditioner that blows air,
It is formed in a box shape, and the internal space of the fuselage 1 is
And divide it into two parts in the horizontal direction.
The heat exchange air passage 7 is formed in the shape of the divided portion, and the other
The outside air ventilation passage 3 is formed in a substantially triangular division,
1 is formed with an outlet 4 and a suction port 6 at the bottom.
An outside air intake 2 is formed on the side of the body 1 and the heat exchange air passage is provided.
The air outlet 4 and the suction port 6 are connected and connected to the
And a heat exchange coil 9, and the blower 8 is a turbo blower
And the heat transfer tube 26 of the heat exchange coil 9
Is formed to have an elliptical cross section, and the outside air blowing passage 3 has an outlet.
4 and the outside air inlet 2 are communicatively connected, and this outside air inlet 2 is exchanged.
Air unit 5, outside air processing air conditioner or ceiling plenum chan
An air conditioner with an outside air blowing unit, characterized in that the air conditioner is in communication with a bag D. 2. Cooling or warm air is blown indoors by heat exchange of return air.
In the ceiling-mounted air conditioner that blows air,
It is formed in a box shape, and the internal space of the fuselage 1 is
And divide it into two parts in the horizontal direction.
The heat exchange air passage 7 is formed in the shape of the divided portion, and the other
The outside air ventilation passage 3 is formed in a substantially triangular division,
1 is formed with an outlet 4 and a suction port 6 at the bottom.
An outside air intake 2 is formed on the side of the body 1 and the heat exchange air passage is provided.
The air outlet 4 and the suction port 6 are connected and connected to the
And a heat exchange coil 9, and the blower 8 is a turbo blower
And the heat transfer tube 26 of the heat exchange coil 9
Is formed to have an elliptical cross section, and the outside air blowing passage 3 has an outlet.
4 is connected to the outside air inlet 2 to provide a blower 10,
The outside air intake 2 is connected to the ventilation unit 5, the outside air processing air conditioner or
An air conditioner with an outside air blowing unit, wherein the air conditioner communicates with a ceiling plenum chamber D. 3. Cooling or warm air is blown indoors by heat exchange of return air.
In the ceiling-mounted air conditioner that blows air,
It is formed in a box shape, and the internal space of the fuselage 1 is
And divide it into four parts in the horizontal direction.
When the heat exchange air passages 7 are respectively formed in the triangular divisions,
Then, the outside air ventilation path 3 is connected to the remaining two substantially triangular divisions.
The air outlet 4 and the inlet 6 are formed at the bottom of the body 1
And the outside air intake 2 is formed on the side of the body 1
And, in the heat exchange air flow passage 7 on the SL outlet 4 and the suction port 6
A blower 8 and a heat exchange coil 9 are provided in communication with each other.
The blower 8 is a turbo blower and the heat exchange coil 9
The cross section of the heat medium flow heat transfer tube 26 of FIG.
The air outlet 3 is connected to the air outlet 4 and the outside air inlet 2 in a communicating manner,
This outside air intake 2 is connected to a ventilation unit 5, an outside air processing air conditioner or
Is connected to the ceiling plenum chamber D.
Outside air blowout unit with an air conditioner that. 4. Heat exchange between return air and cool air or warm air into the room.
In the ceiling-mounted air conditioner that blows air,
It is formed in a box shape, and the internal space of the fuselage 1 is
And divide it into four parts in the horizontal direction.
When the heat exchange air passages 7 are respectively formed in the triangular divisions,
Then, the outside air ventilation path 3 is connected to the remaining two substantially triangular divisions.
The air outlet 4 and the inlet 6 are formed at the bottom of the body 1
And the outside air intake 2 is formed on the side of the body 1
And, the above-mentioned outlet 4 and suction port 6 are provided in
A blower 8 and a heat exchange coil 9 are provided in communication with each other.
The blower 8 is a turbo blower and the heat exchange coil 9
The cross section of the heat medium flow heat transfer tube 26 of FIG.
The air outlet 3 is connected to the air outlet 4 and the outside air inlet 2 in a communicating manner.
A blower 10 is provided, and the outside air intake 2 is connected to a ventilation unit.
5. Communicate with outside air processing air conditioner or ceiling plenum chamber D
An air conditioner with an outside air blowing unit , characterized in that: 5. An external air blowing path 3, and a heat exchange blowing path.
The air conditioner with an outside air blowing unit according to claim 3 or 4, wherein the air conditioners (7, 7) are arranged to face each other .