JPS6032844Y2 - air conditioner - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a housing for housing a finned heat exchanger and a compressor in an air conditioner, which has low noise and
The aim is to provide an air conditioner with low power consumption.

A conventional air conditioner of this type will be explained with reference to FIG.

Reference numeral 1 designates a heat exchanger with fins, which includes a large number of fins 1a and a large number of heat transfer tubes 2 inserted at right angles to the fins and through which a refrigerant passes.
The bark is from.

3 is a compressor, 4 is a housing that houses the finned heat exchanger 1 and the compressor 3, and an air blower 6 is provided at the air outlet 5.

In such an air conditioner, air that exchanges heat with the refrigerant that passes through the heat transfer tubes is made to flow in the direction of the arrow using a blower.

As a result, wind noise was likely to occur when the wind passed between the fins of the finned heat exchanger.

Although this noise is annoying to the ears, it has been difficult to prevent it in this type of air conditioner that uses a blower to move the air.

In addition, in recent years, there has been a call for the development of low-input air conditioners from the viewpoint of energy saving.

In conventional air conditioners, a large proportion of the total power consumption was consumed by the compressor, but as highly efficient compressors have been developed in recent years, the proportion of the total power consumption by the blower has increased. There is.

Therefore, in developing even more energy-saving air conditioners, it is necessary to improve the efficiency of the blower.
Conventional air conditioners like the one shown in the figure have their limits.

As described above, conventional air conditioners have had the disadvantage of approaching the limits of noise reduction and power consumption reduction due to their structure.

The present invention includes a heat exchanger with fins, which is composed of a large number of fins and a large number of heat transfer tubes inserted at right angles to the fins, and which exchanges heat by passing a refrigerant inside the heat transfer tubes, and is arranged around the compressor.
A double duct consisting of an inner duct and an outer duct is installed at the air outlet of the housing that houses the finned heat exchanger and compressor, and the chimney effect of the duct is used to flow air through natural convection for heat exchange. By doing so, the above-mentioned conventional drawbacks are solved.

An embodiment of the present invention will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a finned heat exchanger consisting of a large number of fins 1a and a large number of heat transfer tubes 2 inserted at right angles to the fins and containing a refrigerant therein, and is arranged around a compressor 3.

7 is a housing that houses the finned heat exchanger 1 and the compressor 3, and the air outlet 8 has an inner duct 9 and an outer duct 1.
0 double ducts are provided, and an opening 9a at one end of the inner duct is located directly above the compressor 3.

When the air conditioner according to the present invention with the above configuration is operated, the high temperature and high pressure refrigerant discharged from the compressor 3 flows inside the heat transfer tubes of the finned heat exchanger 1.

As a result, a temperature difference occurs between the air to be heat exchanged and the fin surface of the finned heat exchanger, and since the fin surface is higher, a convection phenomenon occurs in the direction of the arrow, and the air is transferred to the housing 7.
The air flows between the outer duct 10 and the inner duct 9 provided at the air outlet 8 in the direction of the arrow.

Since this duct has a chimney effect, convective movement of air is promoted.

Furthermore, the temperature of the compressor 3 located at the center of the housing 7 is higher than the surface temperature of the fins, and the air around the compressor 3 is subjected to strong convection motion.

Air that tries to rise due to convection moves through the inner duct 9
through the opening 9a in the direction of the arrow.

The strong convection movement of the air traveling inside the inner duct is promoted by the chimney effect of the duct, and the air is released into the atmosphere from the duct outlet 11, but at this time it sucks in the air flowing between the outer duct and the inner duct.

As a result, there is sufficient air flow for heat exchange even without a blower.

Because of the wind flow caused by convection movement, harsh wind noise is hardly generated, and the noise of the air conditioner of the present invention is significantly reduced.

Furthermore, since there is no blower, the power consumption required for the blower is unnecessary, and the power consumption of the air conditioner of the present invention is also significantly reduced.

Furthermore, by making the air outlet of the housing, the outer duct, and the inner duct freely removable, the air conditioner of the present invention can be packed and transported very easily.

Note that the effect remains the same even if the cross-sectional shapes of the inner duct and outer duct are round or square.

As is clear from the above description, the air conditioner of the present invention includes a heat exchanger with fins, which consists of a large number of fins and a large number of heat transfer tubes inserted at right angles to the fins, and which exchanges heat by passing a refrigerant inside the heat transfer tubes. A double duct consisting of an inner duct and an outer duct is provided at the air outlet of the housing that houses the compressor, and the opening at one end of the inner duct is placed directly above the compressor, so that the chimney effect of the duct can be sufficiently achieved. By causing the air used for heat exchange to flow through convective motion, it has the effect of significantly reducing noise caused by wind noise and at the same time significantly reducing the power consumption of the air conditioner.

Furthermore, by making the housing air outlet, the inner duct, and the outer duct removable, the air conditioner of the present invention can be packed and transported very easily.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of an air conditioner according to the present invention.
FIG. 2 is a sectional view of a conventional air conditioner. 1... Heat exchanger with fins, 3... Compressor, 7... Housing, 8... Air outlet, 9... Inner duct, 10... Outer duct.

Claims (2)

[Scope of utility model registration request] (1) A heat exchanger with fins, which consists of a large number of fins and a large number of heat transfer tubes inserted at right angles to the fins, and which exchanges heat by passing refrigerant through the heat transfer tubes, is placed around the compressor, and the heat exchanger with fins is arranged around the compressor. An air conditioner in which a double duct consisting of an inner duct and an outer duct is provided at the air outlet of a housing that houses an exchanger and a compressor, and an opening at one end of the inner duct is located directly above the compressor. (2) The air conditioner according to claim 1, in which the air outlet of the housing, the inner duct, and the outer duct are each detachable.