JPS597902B2 - flow divider - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flow divider that evenly distributes liquid refrigerant to evaporators that constitute a refrigeration cycle.

If the evaporator of a refrigeration cycle has a small capacity, there is no problem with one or two refrigerant passages, but for a large capacity evaporator, 20 to 30 parallel channels are required. It is necessary to uniformly vaporize the refrigerant within the thin tube.

However, conventional flow dividers are based on a long structure in which a conical flow divider is installed opposite the open end of the main pipe that leads liquid refrigerant to the evaporator, making it difficult to avoid drifting. Because it is difficult to make adjustments, it is difficult to uniformly cool the entire surface of the evaporator and exchange heat efficiently. had.

The present invention, which was made in view of this point, will be described below with reference to the drawings. Reference numeral 1 indicates a main pipe that guides liquid refrigerant flowing from a condenser (not shown) to an evaporator 3 via an expansion valve 2, and 4 is a main pipe parallel to the main pipe. from the evaporator 3 to the compressor (not shown)
It is a thin tube that forms a number of independent refrigerant flow paths between the suction tube 5 that leads the vaporized refrigerant to the main tube 1, and the liquid refrigerant is evenly distributed to the thin tube through a flow divider 6 attached to the tip of the main tube 1. I'm trying to make it happen.

As shown in FIGS. 2 and 3, the flow divider 6 has a circulation chamber 8 containing a jet pipe 7, and a main pipe 1, a main pipe 1, Similarly, a thin tube 4 is attached to the upper side in such a manner as to surround the main tube 1, and the jet tube 7 has a length such that the tip 9 is bent in one direction to promote a swirling flow of liquid refrigerant in the circulation chamber 8. It is composed of different groups of tubes 7', 7//e, and each jet tube is attached to the tip of the main tube 1 so as to communicate with it.

The flow divider having such a structure can jet the liquid refrigerant flowing from the main pipe 1 into the swirling chamber 8 through the jet pipe 7 to create a swirling flow in a gas-liquid mixed state with refrigerant bubbles mixed in, and each thin pipe 4 The refrigerant can be evenly distributed and delivered.

In other words, in conventional flow dividers, the liquid refrigerant from the main pipe is immediately diverted to the capillary tubes in its liquid state. However, in the flow divider of the present invention, air bubbles are mixed into the refrigerant immediately before it is divided into the thin tubes, so that the specific weight becomes smaller. , it is less affected by gravity and pipe resistance, and there is almost no relationship with dryness.

Furthermore, in the flow divider of the present invention, since the thin tubes and the main tube are connected through the swirl chamber, if it is necessary to increase or decrease the refrigerant flow rate to some of the thin tubes due to the structure of the evaporator, the swirl chamber It is possible to meet such requests by attaching appropriate auxiliary fittings to the refrigerant, and it is possible to not only increase the efficiency of the divided refrigerant flow by eliminating uneven flow of the refrigerant flow, but also to form a highly efficient refrigeration cycle structure with the evaporator. It is also a wide range flow divider.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a usage state of a flow divider according to the present invention, FIG. 2 is a vertical side view of the flow divider, and FIG. 3 is a sectional view taken along line 1 of FIG. 1... Main tube, 4... Thin tube, 7...
... Jet pipe, 8... Turning chamber.

Claims (1)

[Claims] 1 A main pipe and a number of thin tubes parallel to the main pipe are connected via a swirling chamber attached to the tip of the main pipe, and the swirling chamber has a plurality of tubes each consisting of a group of tubes of different lengths with their tips bent in one direction. A flow divider characterized in that a jet flow pipe is installed in communication with a main pipe so that liquid refrigerant flowing from the main pipe is evenly divided into thin pipes.