JPH0212494Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cassette-type fan coil unit that is installed on the ceiling of a particularly quiet room such as a hotel or an office to create a completely noise-free and comfortable environment in the room.

Conventionally, in this kind of cassette type fan coil unit, the air passage is divided into upper and lower U-shaped air passages A and B in order to make the overall shape flat due to ceiling installation space etc., as shown in Figure 1. Various mechanisms such as a blower A and a heat exchange coil A are arranged in the upper air passage A.

Furthermore, various silencing devices were installed in the upper air passage A as a mechanism to eliminate noise.

However, installing the silencer C in such a ventilation path A creates a great resistance to the wind flow, and it goes without saying that a good ventilation shape cannot be obtained, but on the other hand, the resistance increases the noise. Furthermore, cleaning, inspection, and replacement work is very difficult because it is inside the upper air passage A, and noise from mechanisms such as the blower and electric motor flows out from the inlet and outlet, making it impossible to completely eliminate noise. There was a serious drawback in that it was not possible to obtain what was desired.

The main purpose of this invention is to fundamentally solve these conventional drawbacks, and its configuration is such that a cassette-type fan coil unit has a blow-off grill with a blow-off outlet in the front, and a blow-out grill in the bottom. The air inlets are provided inside the body, with suction ports provided on both sides of the lower panel, and lower grilles each having a lower air outlet adjacent to the air inlets, each of which is extendable and movable, with a partition plate in between. An upper air passage A that communicates with the outlet and the lower air outlet and a lower air passage B that communicates with the suction port are interconnected to form a U-shaped air passage, and a blower, a heat exchange coil, and a drain pan are installed in the upper air passage A. Further, a sound insulating plate is disposed below the blower in the lower air passage B, and a U-shaped air passage is further formed within the U-shaped air passage.

Hereinafter, specific examples of the present invention will be explained in detail with reference to the accompanying drawings, FIGS. 2 and 3.

Reference numeral 1 denotes an air outlet grille 2 having an air outlet 3 at the front of the container body, which is extendable and retractable to an appropriate length, and the air outlet 3 is opened on a vertical wall surface a at a high place such as the ceiling of the room.

Further, below the container body 1, suction ports 5, 5 are provided on both sides of the lower panel 4, and a lower grille 7, which has one of the suction ports 5 and a lower air outlet 6 adjacent to the suction port 5, is installed in the ceiling b.

The inside of the container body 1 is divided into two parts by a partition plate 8 into an upper air passage A and a lower air passage B.
B are communicated with each other to form a U-shaped air passage, and the upper air passage A is communicated with the air outlet 3 and the lower air outlet 6, and the lower air air passage B is communicated with the suction ports 5, 5 on both sides of the lower surface, respectively.

In addition, various mechanisms such as a blower 9, a heat exchange coil 10, a drain pan 11, etc. are arranged in the upper air passage A, and a sound insulating plate 12 made of steel plate, vibration damping steel, sound absorbing material, etc. is arranged in the lower air passage B. is installed below the blower 9.

In addition, reference numeral 13 in the figure indicates the air outlet installed in the lower air outlet 6, and by adjusting the air outlet with regulating blades, the air outlet direction can be changed to any direction, such as not only to the front but also to the downward direction, such as bidirectional or unidirectional. Can be easily switched.

14 is a filter.

The present invention is based on the above-mentioned configuration, in which indoor air passes through the lower air passage B from the suction ports 5, 5 on the lower surface of the vessel body 1, and passes through the heat exchange coil 10 in the upper air passage A.
The front air outlet 3 exchanges heat and generates suitable cool and warm air.
Therefore, it is possible to simultaneously bring about an optimum cool and warm environment in the blow-off chamber from the lower blow-off port 6 as well.

In particular, in the present invention, by disposing the sound insulating plate 12 in the lower air passage B, the noise generated from the upper blower 9 is insulated and canceled by the sound insulating plate 12, which was a concern in the past. The sound insulating plate 12 not only completely eliminates the noise flowing out from the openings of the lower suction ports 5, 5, etc., making it extremely quiet, but also eliminates dust and the like inside the device.
It is possible to prevent it from falling, and it can be easily removed without exposing the internal mechanism from the lower suction ports 5, 5, and inspection and cleaning are easy.In particular, the entire airflow path forms a W-shaped airflow path. It can be said to be an air conditioner ideal for use in hotels with low ceilings, as it has a more effective sound deadening effect and can be formed into an extremely flat and low-volume overall shape.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional cassette type air conditioner. FIG. 2 is a bottom view of a fan coil unit showing an embodiment of the present invention, and FIG. 3 is a sectional view of the same. Explanation of symbols, 1... vessel body, 3... air outlet, 5...
...Suction port, 6...Downward outlet, 9...Blower, 1
0...Heat exchange coil, 12...Sound insulating plate, A...Upper air duct, B...Lower air duct.

Claims (1)

[Scope of utility model registration request] A blowout grille 2 with a blowout port 3 provided at the front, and suction ports 5, 5 provided on both sides of the lower panel 4 at the bottom.
In addition, the air outlet 3 and the lower air outlet 6 are installed in the interior of the container body 1, which has a lower grille 7, which is movably extendable and retractable, with a lower air outlet 6 adjacent to the air inlet 5, separated by a partition plate 8. The upper air passage A that communicates with the air passage A and the lower air air passage B that communicates with the suction ports 5 and 5 communicate with each other to form a U-shaped air air passage, and within the upper air passage A, there is a blower 9, a heat exchange coil 10, and a drain pan. 11, and a sound insulating plate 12 below the blower 9 in the lower air passage B.
A cassette-type fan coil unit characterized in that a U-shaped air blowing passage is further formed within the U-shaped air blowing passage by arranging the following.