JPH02242030A - Auxiliary duct for ceiling buried type air conditioner - Google Patents

Abstract

PURPOSE:To provide a sufficient blowing of air into a room and make a comfortable interior environment by a method wherein a blowing port is arranged in a ceiling part and a suction port is arranged near a floor. CONSTITUTION:FCU 32 mounted in a ceiling 12 has a suction part 34 at a side surface of a main body. In turn, a ceiling garret wall is fixed with a suction connection chamber 36. The suction connection chamber 36 and the FCU 32 are connected by an easy round duct 38. The suction connection chamber 36 has a vertical duct 40 inserted from below and fixed thereto. A lower end of the vertical duct 40 has a slant opening 46. The opening 46 is positioned near a floor in a room 22. The opening 46 is provided with a filter 48 is such a way as it may be freely inserted or fed out of it. Accordingly, blown air from the FCU 32 arranged at the ceiling is sucked into the opening 46 arranged near the floor 54 as it is and then a distribution of temperature within the room is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an auxiliary duct for a ceiling-embedded air conditioner, and particularly to an auxiliary duct that is effective for improving indoor temperature distribution.

[Conventional technology]

Conventional ceiling-mounted fan coil unit (generally referred to as cassette type fan coil unit, hereinafter referred to as FCU)
) is a major improvement on the labor involved in the previous attic duct work.As shown in Figure 6, an inlet 4 and an outlet 6 are installed on the indoor side of the FCU 2, and a fan 8 and heat exchanger are installed inside. It was equipped with a container 1o, which was attached to the ceiling 12. In this case, the indoor air was circulating as shown by the arrows in the figure.

[Problem to be solved by the invention]

However, in conventional FCUs, the suction port and the blowout port are integrated, and their relative positions are close to each other.

For this reason, especially during heating, the temperature of the blown air is high, so the buoyancy is large, and the blown air may be sucked in from the suction port as it is, so the warm air does not reach the bottom of the room sufficiently. As shown in the figure, there was a problem in that the temperature difference between the high temperature area 24 and the low temperature area 26 of the room 22 was large.

In addition, even if the FCU itself is equipped with a temperature thermostat, the temperature in the upper part of the room is high, even though the temperature is not high enough in areas where humans live, so the thermostat may work and cause the FCU to shut down or operate at a low air volume. It was becoming something like that.

Furthermore, as shown in Figure 7, even if the temperature thermometer 28 is installed in a place where there are people, the temperature near the ceiling will be quite high in order to warm the feet. This is not desirable because it gives a feeling of

The purpose of this invention was to solve the above problems, and to provide an auxiliary duct that improves indoor temperature distribution and provides a comfortable indoor environment by sufficiently distributing blown air indoors. It is.

[Means to solve the problem]

In order to achieve the above objects, the present invention provides a ceiling-embedded fan coil unit having a suction section other than the indoor side, a suction connection chamber provided near a wall in the attic, and the suction connection chamber and the fan coil unit. The device is characterized in that it is composed of a horizontal duct connected to the suction portion of the duct, and a rigid duct having an opening at the lower end and having an upper portion attached to the suction connection chamber.

[Effect]

According to the above configuration, indoor low temperature air is sucked in from the opening at the lower end of the hard duct, and is taken into the FCU from the horizontal duct in the attic via the suction connection chamber.

Heat can be exchanged and blown out from the ceiling.

Therefore, the blown air is sufficiently distributed downward in the room, and the temperature difference between the upper and lower parts of the room can be reduced.

C Embodiment] Hereinafter, an embodiment of the present invention will be described based on the drawings. Note that the same reference numerals are given to the same structural parts as in the conventional example, and the explanation thereof will be omitted.

In FIG. 1, the FCU 32 installed on the ceiling 12 is 1
A suction section 34 is provided on the side surface of the main body, and a suction connection chamber 36 is installed near the ceiling wall, and the suction connection chamber 36 and the FCU 32 are connected by a simple round duct 38.

A rigid duct 40 is inserted and attached to the suction connection chamber 36 from below. When installing, it can be adjusted in the vertical direction as shown by arrow 42. code 44
is the adjustment section.

An opening 46 is provided diagonally at the lower end of the hard duct 40, and the opening 46 is located near the floor of the room 22. Further, a filter 48 is attached to the opening 46 so as to be removable.

In addition, the reference numeral 50 is a hanging bolt for suspending the simple round duct 38, and the reference numeral 52 is a heat medium piping 54 connected to the FCU 32.
is the indoor floor.

Next, the details of the arrangement near the suction connection chamber 36 are explained in the second section.
This will be explained using figures.

The suction connection chamber 36 is attached to a ceiling base material 62 (lightweight steel in this embodiment) in the ceiling next to the wall, and its lower end is flush with the finished surface of the ceiling material 64. After inserting the adjusting part 44 of the hard duct 4o into the suction connection chamber 36 and installing it at an arbitrary position, the hole formed in the ceiling material is covered with a ceiling hole decorative panel 66 to finish. This allows the ceiling material 64 to be cut into a larger size.

In this embodiment, the thickness of the suction connection chamber 36 (l in the figure)
1iiT) is set to be about 70 mm larger than the rigid duct 4o, so that even if the opening of the horizontal round duct 38 is hidden by about half by adjusting the rigid duct 4o, there is no problem with ventilation.

The rigid duct 40 is inserted downward into the suction connection chamber 36,
The lower end is located at an appropriate height from the floor, but if more than half of the opening of the round duct 38 is to be blocked, the upper end can be appropriately cut off with a saw or the like. Since the cut end is hidden inside the suction connection chamber 36, the appearance does not deteriorate, and the space between the rigid duct 4o and the suction connection chamber 36 is sealed by a seal cushion material 68.

The reference numeral 70 is a set screw for fixing the ceiling decorative panel 66, and 72 is a wall. When the wall 72 is installed up to the ceiling, the suction connection chamber 36 may be attached to the wall 72. is a channel for attaching the suction connection chamber 36 to the lightweight ceiling underlayment.

FIG. 3 shows the lower part of the rigid duct 40. The lower end of the rigid duct 40 is opened diagonally at an angle of approximately 45 degrees, so the opening ratio is large, and at the same time it reduces the air resistance of the filter 48. , clogging of the filter 48 is prevented.

The filter 48 can be easily inserted into the slit of the filter insertion 68o along the entrance surface.

The FCU 32 used in this example is as shown in FIG.
The air intake port on the indoor 22 side is closed, leaving only the air outlet 6.

According to this embodiment, as shown in FIG. 5 (and FIG. 1), the blown air from the FCU 32 provided on the ceiling is sucked as it is into the opening 46 provided near the floor 54, and as shown in FIG. Since the airflow can flow as shown by the arrow, the short-circuited airflow that occurs in the conventional example is no longer generated, and the temperature distribution in the room is improved.

Additionally, by installing a thermosensor specifically for the air conditioner inside the hard duct, optimal operation control can be achieved.

By passing the thermosensor wire through the hard duct,
Wiring work is easy, and the same can be done by installing a control switch in the hard duct.

Although this embodiment has been described using a cassette-type FCU, it is also fully applicable to conventional ceiling-mounted fan coil units and ceiling-mounted compact air handling units.

〔Effect of the invention〕

As described above, according to the present invention, the outlet is provided in the ceiling and the inlet is provided near the floor, so the blown air is sufficiently distributed throughout the room, improving the temperature distribution in the room.
Air conditioners can also be controlled by sensing actual temperatures. Therefore, a comfortable indoor environment can be created.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing one embodiment of the present invention, and Fig. 2 is a schematic diagram showing an embodiment of the present invention.
Figure 3 is a detailed view of part A in Figure 1, Figure 4 is a sectional view of the FCU of this embodiment, Figure 5 is an explanatory diagram of the interior of the room,
FIG. 6 is a sectional view of a conventional FCU, and FIG. 7 is an explanatory diagram of the interior of a conventional room. 4.°°Suction port, 6.Blowout port, 12.Ceiling. 22...Indoor, 28...Thermo sensor, 32...
Cassette type fan coil unit, 36... Suction connection chamber, 38... Simple optical duct, 4o... Hard duct, 46... Opening, 48... Filter. 54...Floor, 66...Ceiling hole decorative panel, 72...
·wall. Figure 1

Claims (4)

[Claims] 1. A ceiling-embedded fan coil unit having a suction section other than the indoor side, a suction connection chamber provided near a wall in the attic, and a horizontal duct connecting the suction connection chamber and the suction section of the fan coil unit; An auxiliary duct for a ceiling-embedded air conditioner, comprising a hard duct whose upper part is attached to the suction connection chamber and whose lower end is opened. 2. The auxiliary duct for a ceiling-embedded air conditioner according to claim 1, wherein the rigid duct has an opening at a lower end located directly above the indoor floor. 3. 2. The auxiliary duct for a ceiling-embedded air conditioner according to claim 1, wherein the hard duct has a lower end with an oblique opening. 4. The hard duct is an auxiliary duct for a ceiling-embedded air conditioner, and the hard duct is provided with a thermosensor or a control switch for controlling the fan coil unit.