JPH1163733A - Refrigerating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stir a refrigerant flow after restricted and make it uniform lower pressure variation and reduce vibration due to the pressure variation by inserting a flat plate formed in a spiral shape into a piping immediately after a restricted part. SOLUTION: A porous flat plate 7 formed by winding a plate spirally is inserted into a part immediately after a restricted part 4 in a pipe 6 for connecting the restricted part 4 to an evaporator 3. The porous flat plate 7 is formed by post-working spirally a flat plate such as a foaming metal, a sintered metal, ceramics or the like, or forming a plate spirally by using a mold. Thus, since a two-phase refrigerant flow immediately after the restricted part 4 is stirred through a spiral passage, it becomes similar to a uniform refrigerant flow. As a result, pressure variation is lowered. The length of the porous flat plate 7 is adjusted, so that an effect of lowering the pressure variation can be adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a compressor, a condenser,
Restriction, and a refrigeration system composed of an evaporator, particularly,
The present invention relates to a refrigeration apparatus in which vibration caused by a change in pressure of the refrigerant after the throttle is reduced.

[0002]

2. Description of the Related Art FIG. 2 shows a general configuration of a refrigerating apparatus to which the present invention is applied. In FIG. 2, 1 is a compressor,
Reference numeral 2 denotes a condenser, 3 denotes an evaporator, and 4 denotes a throttle. In the refrigeration apparatus configured as described above, the refrigerant flows as indicated by the arrow, but the refrigerant becomes a two-phase refrigerant flow in a pipe portion communicating between the throttle 4 and the evaporator 3.

That is, in this piping portion, the refrigerant
As shown in the figure, there is a case where the liquid refrigerant 8 and the gas refrigerant 9 flow separately, a case where large bubbles and a liquid phase flow alternately, a case where relatively large bubbles are mixed in the liquid phase, and the like. Occurs. In any case of such a two-phase refrigerant flow, a pressure fluctuation accompanies each case, and accordingly, a refrigerant flow noise is generated.

Although proposals have been made to prevent the generation of this refrigerant flow noise, an example thereof is disclosed in Japanese Patent Application Laid-Open No. 61-65 / 1986.
No. 62 is disclosed. The one proposed here has the configuration shown in FIG.

[0005] In FIG. 4, reference numeral 6 denotes a pipe connecting the throttle 4 and an evaporator (cooler). The proposal here is to insert a porous body 10 into the pipe 6 and to make an injection sound. Is to be reduced.

However, in the configuration in which the porous body 10 is inserted into the pipe 6, the effect of reducing the refrigerant flow noise is reduced by half with respect to the two-phase refrigerant flow in the state shown in FIG. There is a disadvantage that the body 10 is clogged with dust and impairs its intended function.

As described above, the main factor of the refrigerant flow noise is the pressure fluctuation after the throttling, which becomes noise by vibrating the cooler. The key point in suppressing this pressure fluctuation is to make the flow before the cooler a homogeneous flow.

However, the above-mentioned conventional example of Japanese Patent Application Laid-Open No.
In the apparatus disclosed in Japanese Patent No. 6562, it is necessary to reduce the aperture ratio of the porous body in order to make the flow uniform, and the pressure loss inevitably increases. Conversely, when the aperture ratio is increased, the pressure loss is reduced, but there is a disadvantage that the liquid portion and the gas portion pass through as they are, and the flow does not become a homogeneous flow.

[0009]

SUMMARY OF THE INVENTION According to the present invention, in a refrigeration system including a compressor, a condenser, a throttle, and an evaporator, it is possible to reduce the vibration generated due to the pressure fluctuation of the refrigerant after the throttle. It is an object of the present invention to provide a refrigerating device that has been improved.

[0010]

SUMMARY OF THE INVENTION According to the present invention, there is provided a refrigeration system comprising a compressor, a condenser, a throttle, and an evaporator, which is spirally inserted into a pipe immediately after the throttle. Provided is a refrigeration apparatus having a configuration in which a formed flat plate is inserted.

As the spirally formed flat plate used in the refrigerating apparatus according to the present invention, it is preferable to use a perforated flat plate in order to enhance the effect of reducing the flow noise of the refrigerant.

In the refrigeration apparatus according to the present invention, since the spirally formed flat plate is inserted into the pipe immediately after the throttle, the two-phase refrigerant flow after the throttle is formed by the spiral spiral plate formed by the spiral flat plate. By passing through the passage, it is stirred and becomes a homogeneous refrigerant flow.

As described above, the spiral flat plate can reduce noise without substantially changing the pressure loss to the refrigerant flow.
In addition, there is no fear that the function is deteriorated due to clogging of garbage.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a refrigeration apparatus according to the present invention will be specifically described based on an embodiment shown in FIG. Note that, in the following embodiments, the same components as those of the conventional apparatus shown in FIG.

In FIG. 1, reference numeral 7 denotes a spirally wound perforated flat plate, and a pipe 6 connecting the throttle 4 and the evaporator 3.
It is inserted immediately after the diaphragm 4 in FIG.

Suitable materials for forming the perforated flat plate include foamed metal, sintered metal, ceramic and the like. Of course, the flat plate may be post-processed into a spiral shape, or may be formed into a spiral shape using a mold. The aperture ratio, diameter, and length of the holes in the porous flat plate 7 are appropriately adjusted.

By providing a refrigeration system having a pipe 6 into which a helically formed flat plate is inserted as shown in FIG. 1, the two-phase refrigerant flow after the throttle 4 passes through a helical passage to be stirred. And approach a homogeneous refrigerant flow. As a result, the pressure fluctuation reducing effect of the porous flat plate 7 is promoted. Further, by adjusting the length of the perforated plate 7, the effect of reducing the pressure fluctuation can be adjusted. At this time, the refrigerant passage pressure loss hardly changes,
No clogging due to garbage.

As described above, the present invention has been specifically described based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and the specific structure thereof is within the scope of the present invention shown in the claims. Needless to say, various changes may be made to the configuration.

For example, in the above-described embodiment, a flat plate spirally formed by a perforated plate is employed. However, the perforated plate is not necessarily indispensable, and may be a simple flat plate.

[0020]

As described above, according to the present invention, in a refrigeration system including a compressor, a condenser, a throttle, and an evaporator, a spirally formed flat plate is inserted into a pipe immediately after the throttle. It is intended to provide a refrigeration apparatus having a configuration as described above.

The refrigerant flowing out of the restrictor and flowing as a two-phase flow by the spiral flat plate is stirred and becomes a homogeneous refrigerant flow, thereby reducing pressure fluctuation. Further, when the spiral flat plate is formed of a perforated plate, the high-frequency pressure fluctuation component can be particularly reduced by the sound deadening effect of the perforated plate.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a pipe connecting a throttle and an evaporator in a refrigeration apparatus according to one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a general configuration of a refrigeration apparatus to which the present invention is applied.

FIG. 3 is an explanatory diagram showing a state of a refrigerant flow in a pipe after a throttle in the refrigeration apparatus shown in FIG. 2;

FIG. 4 is a cross-sectional view showing a configuration inside a pipe after drawing in a conventional refrigeration system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 2 Condenser 3 Evaporator 4 Restrictor 6 Pipe 7 Perforated plate 8 Liquid refrigerant 9 Gas refrigerant 10 Porous body

Claims (2)

[Claims] 1. A refrigeration apparatus comprising a compressor, a condenser, a throttle, and an evaporator, wherein a helical flat plate is inserted into a pipe immediately after the throttle. 2. The refrigerating apparatus according to claim 1, wherein the flat plate is a perforated plate.