JPS644018Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a ceiling-embedded air conditioner, more specifically, a fan and a plurality of heat exchangers are installed in the casing body, and each heat exchanger is installed in the casing body. The present invention relates to a ceiling-embedded air conditioner that is provided with a plurality of outlets corresponding to an exchanger and blows out conditioned air in multiple directions to an air-conditioned room.

(Prior art) Conventionally, this type of ceiling-embedded air conditioner is illustrated in Utility Application No. 103624/1983, and is equipped with a fan 2 inside the casing body 1 at the lower part as shown in FIG. A suction passage 8 opening to the air-conditioned room is provided at the lower part of the main body 1 corresponding to the fan chamber 3, and a plurality of heat exchangers 4 are provided at the inner upper part of the main body 1. On the other hand, a blowout passage 5 is formed at a position inside the outer periphery of the main body 1, which opens into the air-conditioned room and blows out conditioned air in multiple directions.

In this way, by driving the fan 2, the air in the air-conditioned room is sucked in from the suction passage 8 and sent to each heat exchanger 4, and as it passes through each heat exchanger 4, heat is exchanged and the air is sent to the blow-off passage 5. Conditioned air is blown out from the air conditioner into the air-conditioned room.

By the way, regarding the air conditioner mentioned above,
A suction passage 8 is formed in the lower part of the main body 1, and the inside of the main body 1 is opened to the air-conditioned room through the suction passage 8, so that the driving noise of the fan 2, etc. generated within the main body 1 is reduced. There was a problem in that the noise was directly transmitted to the air-conditioned room, and the noise in the air-conditioned room was large, causing discomfort.

(Purpose of the invention) This invention was devised in view of the above-mentioned problems, and its purpose is to shield the lower part of the casing body corresponding to the fan chamber with a shielding plate, while also shielding each adjacent heat exchanger. By utilizing the space inside the casing body outside the opposing side surfaces and providing a suction passage in the space, conditioned air can be blown out in multiple directions as in the past, and the casing body can be made larger. The object of the present invention is to prevent fan driving noise from being directly transmitted from the main body to the air-conditioned room, thereby enabling low-noise operation.

(Structure of the invention) The ceiling-embedded air conditioner of the invention has a rectangular casing body 1 with an open lower part and four side walls, and a fan 2 is installed inside the central part of the casing body 1, and the fan 2 is mounted on the outside of the fan 2. At the same time, four heat exchangers 4 are installed inside each of the side walls, and an air outlet 6 is provided corresponding to each of the heat exchangers 4 to air condition the air-conditioned room in multiple directions. In a ceiling-embedded air conditioner that blows out air, the side walls 9a, 9a facing the side surfaces of the heat exchanger 4 adjacent to each other are connected to the corner portions of the casing body 1. A partition plate 9 having a connecting wall 9b is provided, and four suction passages 8 are provided at the corner portions separated from the fan chamber 3 in which the fan 2 is installed. A shielding plate 7 is provided to close the lower part of the chamber 3, and a suction port 13 is provided below the shielding plate 7.
A passage 20 that is blocked from the air outlet 6 is provided between the suction port 13 and the shielding plate 7, and this passage 20 is communicated with each of the suction passages 8. Each of the heat exchangers 4 is disposed on the blow-off side or the suction side of the fan chamber 3, communicating with the blow-off passage 5 separated from the suction passages 8 through the fan chamber 3. , the air sucked through the suction passage is heat-exchanged by the heat exchangers, and the conditioned air is blown out from the plurality of outlets into the air-conditioned room in multiple directions, and the fan is driven by the shielding plate. This is designed to prevent sound from directly transmitting to the air-conditioned room, allowing for low-noise operation.

(Embodiment) A ceiling-embedded air conditioner according to an embodiment of the present invention will be described in detail below with reference to the drawings.

In the embodiment shown in FIGS. 1 and 2, 1 is a casing body of a ceiling-embedded air conditioner, which has a rectangular shape with an open bottom, and a fan 2 connected to a fan motor 2a at the center of the interior. A fan chamber 3 is formed, and four heat exchangers 4 are arranged around the outer periphery of the fan chamber 3, facing each side wall of the main body 1.

Further, a blowout passage 5 is provided between each of the heat exchangers 4 and each side wall of the main body 1, and a blowout port 6 is provided at the lower end of the main body 1 facing each blowout passage 5, The conditioned air that has been heat exchanged in each of the heat exchangers 4 and has reached each outlet passage 5 is blown out from each outlet 6 into the air-conditioned room.

Therefore, the main body 1 corresponding to the fan chamber 3
A shielding plate 7 is provided at the lower part of the fan chamber 3, and the shielding plate 7 closes the lower part of the fan chamber 3 to prevent the drive sound of the fan 2 from directly transmitting from the fan chamber 3 to the air-conditioned room. Each of the heat exchangers 4, 4
Suction passages 8 are formed inside the casing body 1 in a manner isolated from the air outlet 6 on the outside of the opposing side surfaces, and the air in the conditioned room is heated through each of the suction passages 8. This is done as if supplying it to vessel 4.

Specifically, the suction passage 8 is formed at the corner of the main body 1 by utilizing the space between each heat exchanger 4, 4, that is, along the side surface of each heat exchanger 4, 4. A partition plate 9 having rising side walls 9a, 9a and a connecting wall 9b connecting each of the side walls 9a, 9a is used. The suction passage 8 is formed by the corner wall 1a.

Further, a suction grill 10 that opens a large number of suction ports 13 is provided at the lower part of the main body 1 facing the shielding plate 7 of the main body 1,
The intake passage 8 is communicated with the intake passage 8 through a passage 20 formed between the intake grille 10 and the intake grille 10.

In the embodiments shown in FIGS. 1 and 2, the upper part of the partition plate 9 is connected to an upper partition plate 14 having a fan guide, and the upper partition plate 14 and the top plate 1b of the main body 1 are connected to each other. A flow passage 11 is formed between the suction passage 8 and the fan chamber 3, and as the fan 2 in the fan chamber 3 is driven, the suction passage 8 is connected to the suction passage 8 through the suction port 13 and the passage 20. The sucked air is introduced into the fan chamber 3 through the flow passage 11, passes through each heat exchanger 4 from the fan chamber 3, and is blown out into the air-conditioned room via the blow-off passage 5 and the blow-off port 6. .

Note that in the embodiment shown in FIGS. 1 and 2, the air blown from the fan 2 is made to flow into the heat exchanger 4, but the suction air is first circulated from the suction passage 8 to the heat exchanger 4. 3 and 4, the gap between the heat exchanger 4 and the top plate 1b of the main body 1 is closed, and the suction passage is closed. 8 is communicated with the outer peripheral surface side of the heat exchanger 4, and the air outlet 6
is formed separately from the suction passage 8, and the passage 8
is opened to the fan chamber 3, and the suction passage 8 is opened to the fan chamber 3.
The air sucked in may be heat-exchanged by the heat exchanger 4 and sent to the fan chamber 3, and then blown out from the fan chamber 3 through the outlet 6 into the air-conditioned room. still,
In FIGS. 3 and 4, 30 is a drain pan having a fan guide 31.

In addition, in FIG. 1, FIG. 3, k is a gas side piping, l is a liquid side piping, and m is a drain piping.

Further, in the embodiment shown in FIG. 1, the central portion of the shielding plate 7 is recessed upward, and the recessed portion is used as a housing space for the electrical equipment box 12.
The outer circumferential portion of the shielding plate 7 is raised to cover the lower end of the outer surface of each of the heat exchangers 4, and also functions as a drain pan for receiving drain generated from the heat exchanger 4.

The fan 2 provided in the fan chamber 3 includes:
By using a Sirotskov fan, a mixed flow fan, a propeller fan, a turbo fan, etc., and by using a fan other than the Sirotskov fan which requires a fan casing, the vertical width of the fan chamber 3 can be made as small as possible, and the air This makes it possible to reduce the size of the harmonizer and to efficiently blow air from all directions.

The present embodiment is constructed as described above, and when the fan 2 provided in the fan room 3 is driven, the air in the air-conditioned room is sucked into the suction passage 8 from the suction port 13, and heat exchanged by each heat exchanger 4. Thereafter, this conditioned air is blown out from the four blow-off ports 6 into the air-conditioned room in multiple directions as in the conventional case.

However, when the air conditioner is in operation, driving noise of the fan 2 is generated, but a shielding plate 7 is provided at the bottom of the fan 2. Therefore, the shielding plate 7 suppresses the driving noise. The noise is cut off and does not directly reach the air-conditioned room, resulting in low-noise operation.

(Effect of the invention) As explained above, in the ceiling-embedded air conditioner according to the invention, the fan 2 is installed in the center of the rectangular casing body 1 having an open lower part and four side walls. outside of 2, and
Four heat exchangers 4 are installed inside each of the side walls, and a blowout port 6 is provided corresponding to each heat exchanger 4 so that conditioned air is blown out in multiple directions to the air-conditioned room. In the ceiling-embedded air conditioner, side walls 9a, 9a facing the side surfaces of the heat exchangers 4 adjacent to each other and a connecting wall 9b connecting these side walls 9a, 9a are provided at the corner portions of the casing body 1. A partition plate 9 is provided with a partition plate 9, and four suction passages 8 are provided at the corner portions, which are separated from the fan chamber 3 in which the fan 2 is housed. A closing shielding plate 7 is provided, a suction port 13 is provided below the shielding plate 7, and a passage 20 is provided between the suction port 13 and the shielding plate 7 and is blocked from the air outlet 6.
The passages 20 are made to communicate with each of the suction passages 8, while each of the suction passages 8 is made to communicate with the blow-off passage 5 separated from each of the suction passages 8 via the fan chamber 3, and the passage 20 is made to communicate with each of the suction passages 8. Since each of the heat exchangers 4 is disposed on the outlet side or the suction side of the casing body 3, the internal space of the casing body 1 can be effectively used, and the casing body 1 can be made larger. Conditioned air can be blown into the air-conditioned room in many directions without having to
The driving noise of the fan 2 is blocked by the shielding plate 7, and is not directly transmitted to the air-conditioned room, allowing the air conditioner to operate with low noise.

[Brief explanation of drawings]

Fig. 1 is a plan sectional view of a ceiling-embedded air conditioner according to the present invention, Fig. 2 is a sectional view taken along the line X-X in Fig. 1,
FIG. 3 is a plan sectional view of another embodiment, FIG. 4 is a vertical sectional view taken along the line Y--Y in FIG. 3, and FIG. 5 is a vertical sectional view showing a conventional example. 1... Casing body, 2... Fan, 3...
Fan chamber, 4... Heat exchanger, 6... Air outlet, 7...
...Blocking plate, 8...Suction passage, 5...Blowout passage, 9
...Partition plate, 9a...Side wall, 9b...Connection wall, 1
3... Suction port, 20... Passage.

Claims (1)

[Scope of utility model registration request] A fan 2 is installed in the center of a rectangular casing body 1 having an open bottom and four side walls, and four heat exchangers 4 are installed outside the fan 2 and inside each of the side walls. In the ceiling-mounted air conditioner, the casing body 1 is installed internally and is provided with blow-off ports 6 corresponding to the respective heat exchangers 4 to blow out conditioned air in multiple directions to the air-conditioned room. Side walls 9a, 9a facing the side surfaces of the heat exchanger 4 adjacent to each other are provided at the corner portions of the heat exchanger 4.
and a connecting wall 9b connecting these side walls 9a, 9a, and four suction passages 8 separated from the fan chamber 3 in which the fan 2 is housed are provided in the corner portion. Fan room 3
A shielding plate 7 for closing the lower part of the fan chamber 3 is provided at the bottom of the fan chamber 3, a suction port 13 is provided below the shielding plate 7, and between the suction port 13 and the shielding plate 7,
A passage 20 that is blocked from the air outlet 6 is provided, and the passage 20 is communicated with each of the suction passages 8, while each of the suction passages 8 is separated from each of the suction passages 8 via the fan chamber 3. A ceiling-embedded air conditioner characterized in that each of the heat exchangers 4 is disposed in communication with a blow-off passage 5 and on the blow-out side or the suction side of the fan chamber 3.