JPH10306958A - Refrigerant distributor of heat exchanger for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerant distributor of a heat exchanger for an air conditioner which is constructed such that a refrigerant introduced through a plurality of distribution pipes has a uniform heat exchange efficiency. SOLUTION: A refrigerant distributor 56 of a heat exchanger for an air conditioner is constructed such that a distributor body 57 is installed in a refrigerant intake portion of a heat exchanger and a refrigerant is dispersed and distributed into a plurality of distribution pipes 55. The refrigerant distributor 56 further includes resistance means which is made of a resistance ball 2 fixedly secured to a bracket 1 which generates the resistance in the path of the refrigerant introduced into the inside of the distributor body 57 and converts the fluid condition to a turbulent flow condition thus making the distribution of the refrigerant in the distributor body 57 uniform with such a turbulent flow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributor, and more particularly, to a refrigerant distributor of an air conditioner heat exchanger for uniformly distributing a refrigerant drawn into a heat exchanger of an air conditioner for each pipe. It is.

[0002]

2. Description of the Related Art Generally, an air conditioner such as an air conditioner or a refrigerator used at home is operated according to a closed circuit refrigeration cycle.

As shown in FIG. 3, the refrigeration cycle includes a compressor 50 for converting a refrigerant into a high-temperature, high-pressure gas state.
A condenser 51 for cooling and liquefying the refrigerant discharged from the compressor 50, and an expansion valve 52 such as a capillary tube for converting the refrigerant discharged from the condenser 51 to a low-temperature and low-pressure liquid state; The evaporator 53 exchanges heat of the refrigerant discharged from the expansion valve 52 with indoor air, converts the refrigerant into a low-temperature low-pressure gas state, and transfers the low-pressure gas state to the compressor 50.

Here, the condenser 51 and the evaporator 53
When the heat is exchanged in the heat exchanger, two distribution pipes 55 branched from the refrigerant pipe 54 are installed in the heat exchanger in order to rapidly circulate the refrigerant and reduce the transfer pressure.

That is, the heat exchange efficiency is improved by allowing the refrigerant to pass through the heat exchanger through two separate lines.

Needless to say, a distributor 56 is installed at the inlet of the condenser 51 and the evaporator 53, which are heat exchangers, in order to distribute the refrigerant uniformly to the two distribution pipes 55.

As shown in FIG. 4, the distributor 56 has a refrigerant pipe 54 connected to the compressor 50 at one end and a plurality of components connected to the evaporator 53 or the condenser 51. The pipe 55 includes a distributor main body 57 formed to be connected to the other end.

The operation of the distributor 56 will be described. When refrigerant is drawn into the distributor main body 57 through the refrigerant pipe 54, the refrigerant is diffused inside the distributor main body 57.

The refrigerant diffused inside the distributor main body 57 is
While being distributed at a predetermined moving speed generated by the pressure of the compressor 50 and being distributed to the plurality of distribution pipes 55, it is supplied to the evaporator 53 or the condenser 51 through the distribution pipe 55.

[0010]

As described above, when the distribution pipe 55 is used to disperse and supply the refrigerant to the heat exchanger, that is, the evaporator 53 or the condenser 51, the refrigerant pipe is controlled by the moving speed of the refrigerant. There is a problem that it is difficult to distribute the refrigerant uniformly because a large amount of the refrigerant flows in by the distribution pipe 55 installed in a straight line position with the refrigerant 54.

That is, since the refrigerant supplied to the distribution pipe 55 varies and is distributed, the temperature and the pressure of the refrigerant passing through the condenser 51 or the evaporator 53 vary for each distribution pipe 55, and the heat exchange efficiency increases. Is reduced.

[0012]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned various problems, and an object of the present invention is to provide:
An object of the present invention is to provide a refrigerant distributor of a heat exchanger for an air conditioner, configured so that refrigerant introduced through a plurality of distribution pipes has uniform heat exchange efficiency.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is directed to a distributor body in which a refrigerant is dispersed in a plurality of distribution pipes while being diffused into a refrigerant inlet of a heat exchanger. The refrigerant distributor of the heat exchanger for an air conditioner installed includes a resistance ball positioned at a central portion of the distributor main body and fixed by a bracket.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 are a cross-sectional view showing a refrigerant distributor of the heat exchanger for an air conditioner according to the present invention and a perspective view showing a state of connection between a ball and a bracket. A resistance means for generating a resistance in the refrigerant and converting the flow into a turbulent state is provided in the refrigerant inlet portion of the distributor 56.

The resistance means is constituted by a resistance ball 2 fixed to the bracket 1 at a central portion of the distributor main body 57, that is, at a position where the refrigerant directly collides with the drawn-in refrigerant.

That is, when the refrigerant is ejected from the refrigerant pipe 54 to the distributor body 57, the refrigerant collides with the resistance ball 2 and the refrigerant diffused around the resistance ball 2 is in a turbulent state. As a result, a vortex is generated at a portion between the side portion and the coolant introduction portion, so that the distribution state of the coolant in the distributor 56 becomes uniform.

Also, when the refrigerant is drawn into the distributor body 57, the efficiency with which the refrigerant collides with the resistance ball 2, that is, the distribution of the refrigerant without colliding with the resistance ball 2 can be reduced to the utmost. The venturi section 3 for increasing the injection speed of the refrigerant so as to satisfy the following condition is installed in the refrigerant inlet portion of the distributor main body 57.

At the corner of the distributor main body 57 on the opposite side of the refrigerant inlet portion, the resistance generated during the movement of the refrigerant is reduced, and the refrigerant flowing into the distribution pipe 55 is concentrated on the distribution pipe 55. The curved portion 4 is formed so as to flow more smoothly.

In the case of the evaporator 53, for example, in the case of the evaporator 53, the refrigerant formed at a high temperature and a high pressure in the compressor 50 passes through the condenser 51 and the expansion valve 52 to the inlet portion of the evaporator 53. The distributor 5 installed in the
6

The refrigerant flowing into the distributor 56 is supplied to the compressor 5
The refrigerant flows into the distributor body 57 through the refrigerant pipe 54 connected to the refrigerant pipe 54. The refrigerant that has flowed into the distributor body 57 is jetted from the end of the refrigerant pipe 54, and at this time, the jetting speed of the refrigerant is reduced to the pressure applied from the compressor 50 by the venturi section 3.
Then, the ball collides with the resistance ball 2 at a speed obtained by adding the acceleration effect.

When the refrigerant whose speed has been increased in the venturi section 3 is extracted from the refrigerant pipe 54, the refrigerant collides with the resistance balls 2 before being diffused in the distributor body 57 because the resistance balls 2 are close to each other. Become like

The refrigerant colliding with the resistance ball 2 is
Are distributed and diffused while flowing over the outer surface of the resistance ball 2 because of the spherical shape.

The refrigerant diffused throughout the inside of the distributor main body 57 is mixed while colliding with the wall surface of the distributor main body 57, and flows back to the central portion again at the time of the collision, while being diverted to the side and bottom surfaces of the resistance ball 2. A vortex is formed.

When the refrigerant forms a vortex, the refrigerant mixes on the bottom surface of the resistance ball 2, that is, on the side opposite to the portion where the refrigerant is drawn in, and the mixing changes the refrigerant into a turbulent flow.

When the refrigerant is changed into a turbulent flow, the distributor body 5
Although the refrigerant distribution in the pipe 7 is uniform, when the refrigerant flows into the plurality of distribution pipes 55 in the uniform distribution state, fairly accurate distribution to the plurality of distribution pipes 55 becomes possible.

In particular, since the curved portion 4 is formed in a streamlined shape at the corner of the distributor main body 57 which forms the side surface of the distribution pipe 55, after the refrigerant dispersed throughout the distributor main body 57 is mixed, The distribution efficiency is increased by being concentrated on the pipe 55.

As described above, the distribution pipe 55 is connected by the resistance ball 2.
When the refrigerant flowing into the evaporator 53 is evenly distributed, the refrigerant passing through the distribution pipe 55 is uniformly distributed throughout the evaporator 53, and the cooling effect of the air passing through each part of the evaporator 53 is evenly distributed. Become.

That is, since the heat exchange efficiency of the refrigerant becomes uniform over the entire evaporator 53, the heat exchange efficiency can be improved as a whole by preventing a partial decrease in the heat exchange efficiency due to the conventional distribution of the scattered refrigerant. Will be able to gain.

The degree of generation of the vortex can be appropriately adjusted by adjusting the diameter of the resistance ball 2.

[0030]

As described above, according to the present invention, a uniform heat exchange efficiency can be achieved throughout the heat exchanger by installing a resistance ball in the distribution pipe for uniform distribution of the refrigerant drawn into the heat exchanger. And has an excellent effect that the cooling capacity is improved as a whole.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a refrigerant distributor of a heat exchanger for an air conditioner according to the present invention.

FIG. 2 is a perspective view showing a connected state of a ball and a bracket in FIG. 1;

FIG. 3 is a schematic diagram showing a refrigeration cycle of a general air conditioner.

FIG. 4 is a sectional view showing the refrigerant distributor of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bracket 2 Resistance ball 3 Venturi 55 minute piping 56 Distributor (refrigerant distributor) 57 Distributor main body

Claims (4)

[Claims] 1. A refrigerant distributor for an air conditioner heat exchanger, wherein a distributor main body is installed at a refrigerant inlet of the heat exchanger so that refrigerant is dispersed and distributed to a plurality of distribution pipes. Including resistance means configured to generate resistance in the path of the refrigerant drawn into the main body to convert the flow into a turbulent state, and to make the distribution of the refrigerant inside the distributor main body uniform by the turbulent flow. A refrigerant distributor for an air conditioner heat exchanger. 2. The heat exchanger for an air conditioner according to claim 1, wherein the resistance means comprises a resistance ball fixed to a bracket so as to be located at a central portion inside the distributor body. Refrigerant distributor. 3. When the refrigerant is drawn into the distributor main body, the speed is increased in a state where the refrigerant is not diffused into the distributor main body, and the refrigerant is formed in the refrigerant drawing part of the distributor main body so as to directly collide with the resistance ball. The refrigerant distributor for an air conditioner heat exchanger according to claim 2, further comprising a venturi section. 4. The distribution pipe is formed at a distribution pipe installation portion of the distributor body so that the resistance of the refrigerant flowing into the distribution pipe during the flow of the refrigerant is reduced so that the refrigerant is concentrated in the distribution pipe and flows more smoothly. The refrigerant distributor of a heat exchanger for an air conditioner according to claim 1, wherein the refrigerant distributor includes a curved portion.