JPH10132311A - Air-conditioner with four-way diffusing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce running cost by enabling cooling with outside air when cooling is required in an intermediate season or winter by providing a damper that freely controls the flow of the outside air taken in through an outside air inlet hole and circulating air taken in from a first opening part or freely opens or shuts off the inlet hole and the opening part. SOLUTION: An outside air inlet hole 18 that communicates to the outside of a machine body 1 and a first opening part 8 side of an upper vacant chamber 6 is formed on the side surface part of the machine body 1. In the upper vacant chamber 6, a dumper structure 23 that controls without restriction the air flow from the outside air inlet hole 18 and the circulating air flow from the first opening part 8 is provided. The dumper structure 23 is provided with a driving unit as an electric motor that swings it in the direction of an arrow to open and close to outside air inlet hole 18 and the first opening part 8. In an intermediate season or winter (November to March), the first opening part 8 is closed, the outside air inlet hole 18 is opened and blowing only the outside air into a heat exchange coil 4, outside air cooling is enabled. When necessary, hot water is fed to the heat exchange coil 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a four-way air conditioner installed on a ceiling.

[0002]

2. Description of the Related Art Conventionally, a four-way blowout type air conditioner has a structure in which return air sucked from a suction port on a lower surface of a body is exchanged with heat and blown in four directions from an outlet on an outer peripheral edge of the lower body. . In addition, a special heat exchange coil formed in an annular shape was used.

[0003]

However, such a structure has the following problems. Even when cooling is required in the middle or winter, the outside air cannot be cooled and running costs are high. In addition, when outside air is required for indoor air conditioning, an air handling unit or the like must be installed separately from this air conditioner, which is wasteful. In addition, the special coil as described above increases the cost.

[0004]

Therefore, in order to solve such a problem, a four-way air conditioner according to the present invention exchanges heat with return air sucked from a suction port on a lower surface portion of the airframe. In a four-way blowout type air conditioner that blows air in four directions from an outlet at an outer peripheral edge of a lower surface, the airframe is divided into an upper space and a lower space, and the upper space and the lower space are divided into a first opening and a second space. The lower vacant space is formed with a return air passage communicating with the suction port and the first opening, and the supply air passage communicating with the outlet and the second opening is formed in the lower vacant space. Formed around the return air passage, in the upper vacancy, a filter, a blower and a heat exchange coil are horizontally arranged between the first opening and the second opening, and on the side of the body, Forming an outside air intake communicating with the outside of the body and the first opening side of the upper vacancy, Of the outside air damper mechanism to freely flow rate adjustable or ventilation and blocking the ring air from the first opening from the outside air inlet, those provided.

Further, a swingable openable / closable panel for exposing the lower vacant space is provided on the lower surface of the fuselage, and a swingable openable / closable partition plate for exposing the upper vacant space is provided. A fan block is provided to allow the fan to be pulled out and stored from the side of the fuselage.

[0006] The air supply passage is divided into an upper side and a lower side, and a discharge part communicating with the air outlet is formed below the air supply path. An air reservoir that communicates with the discharge portion and has a larger horizontal cross-sectional area than the second opening and protrudes toward the return air path side is formed, and the branch portion that communicates with the air reservoir and the discharge portion is formed as described above. The air reservoir is formed in the upper remaining part, and has a larger horizontal cross-sectional area than the discharge part.

[0007]

1 to 4 show an embodiment of a four-way blow-out type air conditioner according to the present invention. As shown in FIG. 1, this air conditioner has a hollow body 1 in which a filter 2, a blower 3, a heat exchange coil 4, a drain pan 5, and the like are installed. Is a general flat shape.

The interior of the body 1 includes an upper vacancy 6 and a lower vacancy 7.
The upper vacant chamber 6 and the lower vacant chamber 7 communicate with each other through a first opening 8 and a second opening 9. Further, a panel 10 is provided on the lower surface of the body 1 so as to be able to swing open and close as shown by an arrow H and lockable in a closed state, so that the lower vacant space 7 can be freely exposed. ing.

Reference numeral 11 denotes a suction port for sucking the return air in the room, which is formed in an annular shape by the panel 10 and the opening at the center of the lower surface of the body 1, and around the outer periphery of the lower surface of the body 1 around this.
.. Are arranged (see FIG. 2).

Then, as shown in FIGS. 1 and 3, the suction port
A return air passage 13 communicating with 11 and the first opening 8 and an air supply passage 14 communicating with the outlet 12 and the second opening 9 are formed in the lower chamber 7, and the air supply passage 14 Formed around road 13.

The air supply passage 14 is divided into an upper part and a lower part, and a discharge part 15 communicating with the outlet 12 is formed on the lower part. In addition, a portion on the upper side corresponding to the second opening 9 communicates with the discharge portion 12 near the second opening 9 and has a larger horizontal cross-sectional area than the second opening 9 so as to be stretched toward the return air passage. A venting air reservoir 16 is formed.

Further, a flow dividing portion 17 communicating with the air reservoir 16 and the discharge portion 15 is formed in the upper remaining portion (other than the air reservoir 16). The air reservoir 16 has a larger horizontal sectional area than the discharge unit 12.

Next, in the upper empty space 6, the filter 2, the blower 3 and the heat exchange coil 4 are sequentially arranged in the horizontal direction between the first opening 8 and the second opening 9. This upper vacancy 6
A partition plate 19 which can swing open and close and can be locked in a closed state as shown by an arrow L is provided between the lower chamber 7 and the lower chamber 7 so that the upper chamber 6 can be freely exposed. Has become.

Further, a fan block 20 which allows the blower 3 including the motor 22 to be drawn out and stored from the side of the body 1 is provided in the upper empty room 6 as shown in FIG. The fan block 20 is configured to be slidable and fixable, and is inserted into and removed from an outlet 21 on the side of the body 1. The outlet 21 is covered with a cover (not shown) during operation.

As shown in FIGS. 1 and 3, an outside air inlet 18 is formed in the side of the body 1 to communicate with the outside of the body 1 and the first opening 8 of the upper chamber 6. The upper vacant chamber 6 is provided with a damper mechanism 22 that allows the air volume of the outside air from the outside air inlet 18 and the air from the first opening 8 to be freely adjusted.

The damper mechanism 22 swings (in the direction of the arrow P in FIG. 1) to open and close the outside air intake 18 and the first opening 8, and swings the cover 23 to an arbitrary angle. And a driving device, such as an electric motor (not shown), that is driven and fixed by dynamic driving, and is easy to manufacture with a simple structure.

An example of the operation of the four-way blow-out type air conditioner will be described below.
In March), the first opening 8 is closed and the outside air intake 18 is opened,
By blowing only outside air to the heat exchange coil 4, outside air cooling can be performed. At this time, hot water is supplied to the heat exchange coil 4 as needed. Alternatively, by changing the swing angle of the lid 23, the opening degree (opening degree) of the first opening 8 and the outside air intake 18 is appropriately adjusted, and the return air and fresh outside air are mixed at a predetermined ratio to exchange heat. Air can be sent to the coil 4. In summer, the first opening 8 is opened, the outside air intake 18 is closed, and only the return air is blown to the heat exchange coil 4 for efficient cooling.

During operation, the heat exchange coil 4
The supply air heat exchanged in the second opening 9 flows into the air reservoir 16.
When the air flows into the air outlet, the horizontal cross-sectional area suddenly expands, so that a vortex is formed and the wind speed is slowed down. (Note that
In the past, since there was no air reservoir 16, it was difficult to divide the flow, and even if the width of the discharge part 15 was adjusted in part, the air volume of the four outlets 12 was not uniform and was biased toward one outlet. In addition, the air reservoir 16 can also be expected to function as a silencer.

In the embodiment shown in FIG.
Although the blower 3 and the heat exchange coil 4 are arranged in the order of the push-in type, for example, as shown in FIG. 5, the filter 2, the heat exchange coil 4, and the blower 3 may be of the suction-type in order.

In each of the above embodiments, the structure of the damper mechanism 22 can be freely changed. For example, if the outside air inlet 18 and the first opening 8 are selectively opened and closed by the lid 23 so as to allow ventilation and shutoff, simple control only on / off is required. Alternatively, although not shown, the lid 23 may be of a slide type or a shutter type.

[0021]

According to the first aspect of the present invention, the outside air can be cooled in the middle period to the winter period (November to March), thereby saving energy. It is not necessary to install an air handling unit or the like, so that equipment costs can be reduced. The filter 2, the blower 3, and the heat exchange coil 4 are arranged side by side and the air supply passage 14 is formed around the return air passage 13 so that the entire body 1 is flat and low, so that Can also be installed. Since the filter 2 can also be used for filtering the outside air and the return air, and a general and inexpensive heat exchange coil 4 can be used,
The number of parts and cost can be reduced.

According to the second aspect of the present invention, the filter 2, the heat exchange coil 4, and the blower 3 can be easily maintained by opening the panel 10 and the partition plate 19 even when the filter 2 is embedded in the ceiling. Further, since the blower 3 can be easily pulled out from the body 1, maintenance is further facilitated.

According to the third aspect of the present invention, the air volume at the air outlet 12 is not biased, and a silencing effect can be expected.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing one embodiment of the present invention.

FIG. 2 is a bottom view of the embodiment.

FIG. 3 is a simplified perspective view in which the internal structure of the embodiment is partially omitted.

FIG. 4 is a perspective view of the appearance of the embodiment.

FIG. 5 is a side view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airframe 2 Filter 3 Blower 4 Heat exchange coil 6 Upper chamber 7 Lower chamber 8 First opening 9 Second opening 10 Panel 11 Inlet 12 Outlet 13 Return air path 14 Supply path 15 Discharge section 16 Air pool Part 17 Dividing part 18 Outside air intake 19 Partition plate 20 Fan block 22 Damper mechanism

Claims (3)

[Claims] 1. A return air sucked from a suction port (11) on a lower surface portion of the body (1) is subjected to heat exchange, and an outlet (12) on an outer peripheral edge of the lower surface portion of the body (1).
In the four-way blowout type air conditioner which blows air from four directions, the above-mentioned airframe 1 is divided into an upper chamber 6 and a lower chamber 7, and the upper chamber 6 and the lower chamber 7 are divided into a first opening 8 and a second opening. The lower vacant chamber 7 is formed with a return air passage 13 communicating with the suction port 11 and the first opening 8 and communicates with the outlet 12 and the second opening 9. An air supply path 14 is formed around the return air path 13, and a filter 2, a blower 3 and a heat exchange coil 4 are provided in the upper chamber 6 by the first opening 8 and the second opening 9. An outside air intake 18 communicating with the outside of the airframe 1 and the first opening 8 side of the upper space 6 is formed in the side surface of the airframe 1 between the airframes 1 and 2. A damper mechanism 22 that allows the outside air to be adjusted and the air flow from the first opening 8 to be freely adjustable or to allow ventilation and cutoff.
, A four-way blowout type air conditioner. 2. A swingable openable / closable panel 10 for exposing the lower space 7 and a swingable openable / closable partition plate 19 for exposing the upper space 6 are provided on the lower surface of the body 1. The blower 3 is drawn out from the side of the fuselage 1 into the vacant room 6.
The four-way blow-out type air conditioner according to claim 1, further comprising a fan block (20) that can be freely stored. 3. An air supply passage 14 is divided into an upper part and a lower part, and a discharge part 15 communicating with the air outlet 12 is formed below the lower part, and a part corresponding to the second opening part 9 on the upper part. In the discharge unit
An air reservoir 16 communicating with the air inlet 15 and having a larger horizontal sectional area than the second opening 9 and projecting toward the return air passage 13 is formed, and communicates with the air reservoir 16 and the discharge portion 15. A flow dividing portion 17 is formed in the upper remaining portion, and the air reservoir 16 has a larger horizontal cross-sectional area than the discharge portion 15.
The four-way blowout type air conditioner as described in the above.