JP4698188B2 - Embedded ceiling air conditioner - Google Patents

Description

  The present invention relates to a ceiling-embedded air conditioner.

In general, a unit body having a heat exchanger and a blower and a grill having a suction port and a blower outlet disposed at the lower end of the unit body, the air in the conditioned room sucked from the suction port is 2. Description of the Related Art A ceiling-embedded air conditioner that is blown out from a blower outlet into a conditioned room after heat exchange is known (see, for example, Patent Document 1).
No. 2-4337

For this type, a 4-way cassette type, 2-way cassette type, 1-way cassette type, etc. are known. However, since a filter is provided horizontally on the upper surface of the suction port of the grill, In order to secure a sufficient area, the suction port has to be enlarged, and the width of the grill inevitably increases.
In a general building, when this air conditioner is installed on the ceiling of a perimeter zone near a window, the installation area may not be sufficiently secured. Moreover, when installing in the ceiling of a narrow store, a long and narrow store, etc., there is a connection with a lighting fixture and a sufficient installation space may not be ensured. In these cases, as described above, when the width of the grill is too large, there is a problem that the installation becomes difficult.

  Accordingly, an object of the present invention is to solve the above-described problems of the conventional technology, and to provide a ceiling-embedded air conditioner that is suitable for installation on the ceiling of a perimeter zone near a window, or on the ceiling of a narrow store or an elongated store. It is to provide.

The present invention is a one-way cassette type air conditioner in which air sucked from one suction port is heat-exchanged by a heat exchanger in the unit body and then blown out from one air outlet, and is arranged at the lower end of the unit body. In the ceiling-embedded air conditioner having a grille having a suction port and an air outlet, a first space and a second space partitioned by a partition wall are formed in the unit body, and the partition wall An indoor fan is disposed in the upper space of the indoor fan, and an indoor heat exchanger and a drain pan that receives drain from the indoor heat exchanger are disposed in the second space on the downstream side of the indoor fan. In the first space extending vertically to the full height of the unit main body, the filter that cleans the air and extends to the full height of the unit main body has a filter surface. Extend almost vertically Disposed vertically, the top portion of the first space, the filter lifting mechanism is provided by the filter lift mechanism, and a vertically movable suspended a filter, characterized in that.
In this case, the shape of one inlet and one outlet may be substantially the same. Moreover, it is good also considering the width | variety of the said suction inlet and a blower outlet as 12% or more and 21% or less of the width | variety of the said grill. The filter may be removable through the grill opening. You may provide the plate which plugs the said attachment-and-detachment opening in the lower end of the said filter .

  According to the present invention, since the filter for purifying the air sucked from the suction port is arranged vertically or obliquely in the unit body, the width of the unit body and the grill is considerably smaller than the conventional one. can do.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  In FIG. 1, reference numeral 100 denotes an air conditioner. The air conditioner 100 includes an outdoor unit 100A and an indoor unit 100B. The outdoor unit 100 </ b> A includes a compressor 1 that compresses refrigerant, and an outdoor heat exchanger 3 is connected to the compressor 1 via a four-way valve 2. An outdoor mechanical valve 4 is connected to the outdoor heat exchanger 3, and the outdoor mechanical valve 4 is connected to an indoor mechanical valve 5 provided in the indoor unit 100B. The indoor heat exchanger 6 is connected. 8 is an indoor blower. An accumulator 7 on the outdoor unit 100 </ b> A side is connected to the indoor heat exchanger 6 through the four-way valve 2, and the accumulator 7 is connected to the compressor 1.

  In the air conditioner 100, solid arrows indicate the refrigerant flow during the cooling operation. The refrigerant discharged from the compressor 1 reaches the outdoor heat exchanger 3 through the four-way valve 2 and condenses here. Then, it reaches the indoor heat exchanger 6 through the mechanical valves 4 and 5, where it receives and evaporates air from the indoor blower 8 and returns to the compressor 1 through the four-way valve 2 and the accumulator 7. The room to be conditioned is cooled by the air blown by the indoor blower 8 described above.

  Broken line arrows in the figure indicate the flow of refrigerant during heating operation. In this case, the refrigerant discharged from the compressor 1 reaches the indoor heat exchanger 6 through the four-way valve 2, and receives the air from the indoor blower 8 and condenses, and then passes through the mechanical valves 5 and 4. It reaches the outdoor heat exchanger 3. And it evaporates here and returns to the compressor 1 through the four-way valve 2 and the accumulator 7. The conditioned room is heated by the air blown by the indoor blower 8 described above.

  As shown in FIG. 2, the indoor unit 100 </ b> B having this configuration is embedded in the ceiling 101 of the conditioned room. The indoor unit 100B includes a unit main body 200, and a first space A and a second space B partitioned by a partition wall 31 are formed in the unit main body 200. In the upper space C of the partition wall 31, an indoor fan 8 composed of a cross flow fan is arranged, and on the downstream side of the indoor fan 8, that is, in the second space B, the indoor heat exchanger 6 and A drain pan 13 that receives the drain from the indoor heat exchanger 6 is disposed, and in the upstream side of the indoor blower 8, that is, in the first space A, the filter 11 that cleans the air substantially covers the filter surface 11A. It extends vertically and is placed vertically.

In addition, a makeup grill 300 exposed to the conditioned room is disposed at the lower end of the unit body 200. The grill 300 has one inlet 301 and one outlet 302, and the louver 10 is attached to the outlet 302. As shown in FIG. 3, one inlet 301 and one outlet 302 are horizontally long in the longitudinal direction of the grill 300, and their length dimension L1 and width dimension W1 are formed to be substantially the same as each other. Each dimension becomes the length dimension L1 of the suction inlet 301 and the blower outlet 302, the width dimension W0 of the whole grill 300, and the width dimension W1 of the suction inlet 301 and the blower outlet 302 in descending order. Specifically, the length dimension L1 of the suction port 301 and the outlet 302 is 1230 mm, the width dimension W0 of the entire grill 300 is 330 mm, and the width dimension W1 of the inlet 301 and the outlet 302 is 55 mm. Other dimensions in the present embodiment are a dimension W2 = 40 mm from the inlet 301 and the outlet 302 to the long side end of the grill 300, and a dimension W3 = 140 mm between the inlet 301 and the outlet 302. In addition, the width dimension W1 of the suction inlet 301 and the blower outlet 302 in this invention is about 40-70 mm, ie, ratio W1 / W0 of the width dimension W1 of the suction inlet 301 and the blower outlet 302, and the width dimension W0 of the grill 300 whole is About 12 (40/330) to 21 (70/330)% is preferable. Here, by setting W1 / W0 to 12% or more, a sufficient suction port and outlet area can be obtained, and by setting W1 / W0 to 21% or less, the heat exchanger 6 and its drain pan 13 etc. A sufficient dimension W3 between the inlet 301 and the outlet 302 is obtained. Therefore, in this configuration, W1 / W0 is set to 12 to 21%, which is considerably smaller than the width of the conventional grill 300.
When this air conditioner is operated, the air sucked from one suction port 301 is cleaned by the filter 11 with reference to FIG. From 302, the air is blown into the room to be conditioned.

  In the present embodiment, as described above, the filter 11 is provided vertically in the unit main body 200. As shown in FIG. 4, the filter 11 is divided into two parts, and the respective filter portions 11A and 11B are arranged along the filter guide 14 formed on the side wall 200A and the central part 200B of the unit body 200. The unit main body 200 can be taken out. In this case, as shown in FIG. 2, a plate 11 </ b> P is attached to the lower end of the filter 11, and the plate 11 </ b> P is inserted into the unit main body 200 through the attachment / detachment opening 300 </ b> A formed in the grill 300. When stored, the attachment / detachment opening 300A is closed.

A string 20 is connected to the upper end of the filter 11 as shown in FIG. 2 or 5, and the string 20 extends upward in the unit main body 200 and is horizontally changed through the rollers 21A. Thereafter, the take-up roller 21 </ b> B is wound around the take-up roller 21 </ b> B, and the take-up roller 21 </ b> B is connected to the motor 18 provided on the back of the rectifying plate 22. The motor 18, the take-up roller 21 </ b> B, etc. constitute a filter winding device 19.
The filter hoisting device 19 will be described in more detail. Each filter portion 11A, 11B is suspended by two strings 20a to 20d as shown in FIG. Each of the strings 20a to 20d is individually wound around a winding roller 21B, and these winding rollers 21B are connected to one shaft 23. A transmission gear 23A is connected to the center of the shaft 23, and a gear (not shown) connected to the output shaft of the motor 18 is engaged with the transmission gear 23A.

The filter hoisting device 19 is operated when the filter 11 is moved up and down, for example, by operating a remote controller (not shown).
When the remote controller is operated and the motor 18 is driven, the rotational force is transmitted to the transmission gear 23A, and the shaft 23 rotates. When the shaft 23 rotates, the take-up roller 21B fixed to the shaft 23 rotates. When the shaft 23 rotates in the forward direction, the string 20 is fed out, for example, as shown in FIGS. The filter 11 is lowered to a height at which the operator can easily perform the filter maintenance work. When the shaft 23 rotates in the reverse direction, the take-up roller 21 </ b> B takes up the string 20, and as shown in FIG. 4, the filter 11 is raised and stored in a fixed position in the unit main body 200.

In the present embodiment, as described above, since the filter 11 is provided vertically at a fixed position in the unit main body 200, first, the width dimension W of the unit main body 200 can be formed small. The width dimension W0 can be made small. Accordingly, it is possible to arrange a suitable arrangement on the ceiling of the perimeter zone of the building or the ceiling of a narrow store or a long and narrow store in consideration of the connection with the lighting fixture.
In addition, since the filter 11 is arranged vertically with the filter surface 11A extending substantially in the extending direction, the suction space A facing the filter surface 11A becomes vertically long, and the suction port 301 of the grill 300 Even if the width dimension W1 is made small, the area of the filter surface 11A can be ensured as large as in the conventional configuration, and therefore the filter 11 is prevented from being clogged and the suction pressure loss is prevented from being lowered. The

As shown in FIG. 2, a partition wall 31 is formed in the unit main body 200, and the partition wall 31 has an angle with respect to the filter 11 so that the interval increases as the distance from the blower 8 decreases. Is formed. According to this, it becomes possible to distribute the air volume distribution over the entire surface of the filter 11 substantially evenly.
As shown in FIGS. 4 and 6, a suspension fitting 115 is fixed to the outer surface of the side wall of the unit body 200, and a suspension bolt 116 penetrating from the ceiling penetrates the suspension fitting 115, and the projecting lower end of the bolt 116 is inserted. The unit main body 200 is suspended from the ceiling by tightening the nut 16 to the ceiling.

In the present embodiment, as shown in FIG. 3, covers 17 are detachably attached to both ends of the short side of the grill 300.
After installing this air conditioner on the ceiling, the installation height of the indoor unit may be adjusted. In this case, if the cover 17 is removed from the grill 300, the nut 16 is exposed there. Therefore, if a tool is inserted from the space after the cover 17 is removed and the nut 16 is loosened, the unit body 200 suspended by the suspension bolt 116 is lowered by its own weight, and if it is tightened, the unit body The position of 200 rises, and this makes it possible to easily adjust the installation height of the indoor unit.

  As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this. The ceiling-embedded air conditioner configured as described above is a so-called one-way cassette-type ceiling-embedded air conditioner, but is not limited to this. A built-in air conditioner or the like may be used. Moreover, although the crossflow fan is used as the indoor air blower 8, it is not limited to this, A sirocco fan etc. may be sufficient. Furthermore, although the filter surface 11A of the filter 11 extends in the substantially vertical direction and is arranged vertically, the present invention is not limited thereto, and the filter body 11A can be formed with a small width dimension W. For example, it may be placed vertically with respect to the vertical direction.

1 is a circuit diagram showing an embodiment of a ceiling-embedded air conditioner according to the present invention. It is sectional drawing of the same ceiling embedded type air conditioning apparatus. It is a top view of a grill. It is NN sectional drawing of FIG. FIG. 3 is a view corresponding to FIG. 2 showing a state where the filter is lowered. FIG. 5 is a view corresponding to FIG. 4 showing a state where the filter is lowered.

Explanation of symbols

6 Indoor Heat Exchanger 8 Indoor Blower 11 Filter 11P Plate 19 Filter Winding Device (Filter Lifting Mechanism)
200 Unit body 300 Grill 300A Detachment port 301 Suction port 302 Air outlet

Claims (5)

This is a one-way cassette type air conditioner that heats the air sucked from one inlet through a heat exchanger in the unit body and then blows out from one outlet, and is located at the lower end of the unit body. And a ceiling-embedded air conditioner including a grille having a blower outlet,
A first space and a second space partitioned by a partition wall are formed in the unit body, and an indoor fan is disposed in the upper space of the partition wall, and a second space on the downstream side of the indoor fan. Inside, an indoor heat exchanger and a drain pan that receives the drain from the indoor heat exchanger are arranged, and the first extending vertically to the height of the unit main body on the upstream side of the indoor fan. In the space, a filter that purifies the air and extends to the full height of the unit body is arranged vertically with the filter surface extending substantially vertically ,
A filter lifting mechanism is provided at the top of the first space, and the filter lifting mechanism allows the filter to be lifted and lowered freely .
A ceiling-embedded air conditioner characterized by that.   2. The ceiling-embedded air conditioner according to claim 1, wherein the shape of the one inlet and the one outlet is substantially the same.   3. The ceiling-embedded air conditioner according to claim 2, wherein a width of the inlet and the outlet is 12% or more and 21% or less of a width of the grill.   4. The ceiling-embedded air conditioner according to claim 1, wherein the filter is detachable through a grill opening.   The ceiling-embedded air conditioner according to claim 4, further comprising a plate that closes the attachment / detachment port at a lower end of the filter.

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