JPH0537154Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an air conditioner.

(Prior art) The present applicant has applied for an air conditioner shown in Fig. 4.
This was already proposed in No. 63-1248 (Utility Model Application No. 1-106830).

In FIG. 4, air in a room 01 is sucked into the main body 04 of a conditioned air generator 03 buried in the ceiling 02 through an inlet 05, and is heated or cooled as it passes through a heat exchanger 06 and is conditioned. It becomes air. After this conditioned air is energized by the blower 07, it passes through the duct 08, enters the blowout casing 09 fixed to the ceiling 02, and is blown out horizontally into the room 01 from the plurality of blowout ports 010. be done.
The blown out conditioned air is mixed and stirred with indoor air near the ceiling 02 by rotating a propeller fan 012 by a drive motor 011 disposed at the bottom of the air outlet 010, and the temperature is not much different from room temperature. Then, it slowly descends downward into the chamber 01 and is diffused.

(Problem to be solved by the invention) In the above-mentioned conventional device, the conditioned air flow descends inside the blow-off casing 09 and changes its direction horizontally by colliding with the cover 013. Entrainment and backflow occur, which not only increases noise and pressure loss, but also causes the air to be locally blown out from the air outlet 010 into the chamber 01. Moreover, during heating operation, warm air hits the cover 013 and heats it, so the drive motor 01 inside the cover 013 is heated.
1 may cause a seizure accident, and
During cooling operation, the cover 013 is heated due to the temperature difference between the cold air hitting the cover 013 and the heat generated by the drive motor 011.
There was a problem in which dew condensed on the outside surface of the room and was scattered inside the room 01.

(Means for Solving the Problems) The present invention was proposed to solve the above problems, and its gist is that a horizontal opening is provided at the bottom of a blow-off casing that protrudes into the room from the ceiling. In an air conditioner comprising an air outlet and a drive motor for a propeller fan disposed below the air outlet, a space between the air outlet and the drive motor faces the conditioned air flow descending within the air outlet casing. The air conditioner is characterized in that it is provided with a partition wall having a conical part that diffuses the air in a radial direction towards the air outlet and turns it in a horizontal direction.

(Function) Since the present invention has the above-mentioned configuration, the conditioned air flow descending inside the outlet casing is guided by the conical part disposed opposite thereto and directed toward the outlet in a radial direction. It diffuses, turns smoothly in the horizontal direction, and blows out horizontally into the room through the air outlet.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 3.

In Figures 1 to 3, 1 is a conditioned air generator, which includes a main body 3 embedded in the ceiling 2, a suction port 5 opening into a chamber 4, a blower 6 and a heat exchanger built into the main body 3. It has 7. Reference numeral 8 denotes a cylindrical blow-off casing fixed to the ceiling 2, and a blow-off port 9 is formed in the lower part of the casing, which opens horizontally over the entire circumference. A plurality of ring-shaped louvers 11 are disposed in the air outlet 9 and supported by a plurality of support rods 18 at predetermined intervals vertically. A partition wall 10 is fixed to the lower end of the support rod 17, and an outer rotor 12 of a propeller fan 13 that rotates about a vertical axis is disposed below the partition wall 10.

As shown in FIG. 3, the partition wall 10 has a support and a conical portion 10a that opposes the conditioned air flow descending therein, diffuses it in a radial direction toward the air outlet 9, and turns it horizontally. It includes a bottom portion 10b to which the rod 17 is fixed and a collar portion 10c that holds the outer rotor 12.

The upper end of the blowout casing 8 is a duct box 15
This duct box 15 is connected to the duct 1
It is connected to the main body 3 of the conditioned air generator 1 via 6. In addition, 14 is a lighting fixture arranged at the lower part of the outer rotor 12, and 17 is a duct box 15.
It is a sound-absorbing material pasted on the inner surface of the

Thus, the air in the room 4 enters the main body 3 from the suction port 5 of the conditioned air generator 1, is energized by the blower 6, and is cooled or heated in the process of flowing through the heat exchanger 7. This results in conditioned air. This conditioned air enters the duct box 15 through the duct 16, where its dynamic pressure component is converted into static pressure and enters the blow-off casing 8 as a uniform airflow.
The air then descends inside the blow-off casing 8, is smoothly turned horizontally by the conical portion 10a of the partition wall 10, is diffused in the radial direction, and is rectified by the ring-shaped louver 11 from the entire circumference of the blow-off port 9. Room 4
It blows out in all directions. The conditioned air blown into the room 4 is stirred and mixed with the indoor air near the ceiling 2 by the propeller fan 13, and the temperature is not much different from the room temperature, and the air is gradually lowered.

(Effect of the invention) In the present invention, the conditioned air flow descending within the blow-off casing is opposed to the air flow between the blow-off port and the drive motor, and is diffused in the radial direction toward the blow-off port, and horizontally. Since the partition wall has a conical part that deflects the air, the conditioned air flowing down inside the outlet casing is guided by the conical part and diffuses in the radial direction toward the outlet, and is smoothly diverted in the horizontal direction. , and blows out into the room through the air outlet in all directions.

In this way, the conditioned airflow is smoothly diffused in the radial direction by the conical part of the partition wall, and is also turned in the horizontal direction, so there is no vortex, entrainment of airflow, or backflow as in the conventional case. , pressure loss and noise are reduced. In addition, since the conditioned air flow does not blow onto the outer rotor of the propeller fan, it is possible to prevent the motor inside the outer rotor from seizing up, and to prevent dew condensation on the surface of the outer rotor.
Prevents drain from scattering indoors.

[Brief explanation of drawings]

1 to 3 show one embodiment of the present invention, with FIG. 1 being a schematic sectional view and FIG. 2 being a front view showing the vicinity of the air outlet. FIG. 3 is a perspective view of the partition wall. FIG. 4 is a schematic cross-sectional view of a conventional air conditioner. Ceiling...2, Room...4, Blowout casing...
8, Air outlet...9, Partition wall...10, Conical part...
10a, propeller fan...13.

Claims (1)

[Scope of utility model registration request] An air conditioner comprising an air outlet opening horizontally at the bottom of an air outlet casing projecting into a room from the ceiling, and a drive motor for a propeller fan disposed at the bottom of the air outlet, wherein the air outlet and the drive motor are arranged in the air conditioner. and a partition wall having a conical portion that faces the conditioned air flow descending within the outlet casing, diffuses it in a radial direction toward the outlet, and turns it horizontally. Characteristic air conditioner.