JPH04263717A - Air conditioner - Google Patents

Abstract

PURPOSE:To raise the efficiency of a centrifugal fan and reduce noises caused by the turbulence in the air flow by forming as one body in the drain pan a blow-out air guide that extends to the blow-out port of the centrifugal fan from the side of the inner circumference of a drain pan, the drain pan being provided below a heat exchanger provided round the centrifugal fan. CONSTITUTION:An air conditioner has a centrifugal fan 6 at the central section in the main body 2 of the case that is buried in the ceiling and a bell mouth 12 that guides the air to the centrifugal fan 6. Below a heat exchanger 7 that is provided around the centrifugal fan 6 a drain pan 10 is provided. In this constitution, the drain pan 10 has a blowout air guide 20 formed as one body with the drain pan 10 by resin injection forming. The blow-out air guide 20 extends to the vicinity of a blow-out port 6a of the centrifugal fan 6 from the side of the inner circumference of the drain pan 10. And the air flow that is blown out from a blow-out port 6a is guided by the blow-out air guide 20 and made to flow into the heat exchanger 7 smoothly. With this arrangement turbulence in the air flow and pressure loss are reduced, and thereby the efficiency is raised and noises are reduced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner such as a ceiling-embedded air conditioner.

0002

2. Description of the Related Art An example of a conventional air conditioner of this type is shown in FIG. As shown in FIG. 2, a centrifugal fan 6 and a bell mouth 12 are installed in the center of the case body 2 buried in the ceiling 1, and a heat exchanger 7 arranged around the centrifugal fan 6 is A drain pan 10 is installed. A ceiling panel 8 facing the chamber 9 is attached to the lower part of the case body 2, and a suction port 3 is formed in the center of the ceiling panel 8, and an air outlet 4 is formed adjacent to the suction port 3. There is.

When the air conditioner is in operation, refrigerant from an outdoor unit (not shown) circulates through the heat exchanger 7, and the motor 5 drives the blower 6. Then, the room air in the room 9 passes through the suction grille 11 and the filter 13 from the suction port 3, is guided to the bell mouth 12, is drawn into the centrifugal fan 6 from the suction port 6b, and is energized. And heat exchanger 7
In the process of flowing through the air, the air is cooled or heated and becomes conditioned air, which is blown out from the air outlet 4 into the chamber 9.

0004

[Problems to be Solved by the Invention] In the conventional air conditioner described above, the flow of air blown out from the outlet 6a of the centrifugal fan 6 is disturbed in the process of flowing over the bell mouth 12. There is a problem in that efficiency decreases and noise is generated due to this disturbance.

[0005]

[Means for Solving the Problems] The present invention was invented to solve the above problems, and the gist thereof is to provide a centrifugal fan in the center of the case body and a centrifugal fan below the centrifugal fan. In an air conditioner in which a bell mouth is installed at the suction port to guide air, and a drain pan is installed under the heat exchanger arranged around the centrifugal fan, the centrifugal fan is connected to the drain pan from the inner circumference side. This air conditioner is characterized by integrally forming a blow-out air guide that extends to the vicinity of the blow-off port of the fan.

[0006]

[Operation] Since the present invention has the above structure, the flow of air blown out from the outlet of the centrifugal fan is guided by the outlet air guide and smoothly flows into the heat exchanger.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the invention is shown in FIG. The drain pan 10 has a blowout air guide 20 that extends from the inner peripheral side of the upper part thereof to the vicinity of the blowout port 6a of the centrifugal fan 6 and is integrally formed with the drain pan 10 by injection molding of resin. The rest of the structure is similar to the conventional one shown in FIG. 2, and corresponding members are given the same reference numerals.

[0008] Thus, the flow of air blown out from the outlet 6a of the centrifugal fan 6 is guided by the outlet air guide 20 and smoothly flows into the heat exchanger 7. In this way, the turbulence of the air flow blown out from the centrifugal fan 6 is reduced, reducing pressure loss and improving the efficiency of the centrifugal fan 6. Therefore, the power consumption for driving the centrifugal fan 6 is reduced and the air flow is improved. It also reduces noise caused by turbulence.

[0009]

[Effects of the Invention] In the present invention, since the drain pan is integrally formed with a blowout guide that extends from the inner peripheral side of the drain pan to the vicinity of the outlet of the centrifugal fan, the air blown out from the outlet of the centrifugal fan is transferred to the outlet of the centrifugal fan. guided by the heat exchanger. As a result, the power consumption of the centrifugal fan and the noise caused by the turbulence of airflow can be reduced despite the extremely simple and inexpensive configuration.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a conventional air conditioner.

[Explanation of symbols]

2　Case body 6 Centrifugal fan 6a　Air outlet 7 Heat exchanger 10 Drain pan 20　Blowout wind guide

Claims (1)

[Claims] [Claim 1] A centrifugal fan is installed in the center of the case body, and a bell mouth is installed below this to guide air to the suction port of the centrifugal fan, and a bell mouth is installed below the heat exchanger arranged around the centrifugal fan. An air conditioner equipped with a drain pan, characterized in that the drain pan is integrally formed with a blowout air guide extending from the inner circumferential side of the drain pan to the vicinity of the outlet of the centrifugal fan.