JPH0345303B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a refrigerant diverter that diverts refrigerant to an evaporator of a refrigeration cycle of a refrigerator, vending machine, air conditioner, or the like.

Configuration of conventional example and its problems FIG. 1 shows a conventional refrigerant flow divider. A conventional refrigerant flow divider will be explained with reference to FIG.

In the figure, reference numeral 1 denotes a main body of a refrigerant flow divider, and an inlet 3 is formed in the upper part thereof into which a pipe 2 connected to an outlet of a condenser (not shown) is inserted. Further, the main body has a hollow portion 4 that is open at the bottom and communicates with the suction port 3 . Reference numeral 5 denotes a lid that covers the lower surface of the main body 1 and forms two discharge ports 6 and 7.
Capillary tubes 8, 9 connected to respective evaporators (not shown) are attached to the discharge ports 6, 7. At this time, capillary tube 8,
The tip of 9 was made to protrude into the hollow part 4.

In such a device, since the capillary tubes 8 and 9 are provided at the discharge ports 6 and 7, a throttling action is activated, and the gas-liquid two-phase flow flowing from the suction port 3 is separated within the main body 1 of the flow divider. This causes liquid refrigerant to accumulate. Therefore, the flow separation is performed only in the liquid phase. However, in order to divide the flow evenly, it is necessary to align the tips of the capillary tubes 8 and 9 to the same level.
7, it was more difficult to align the insertion distances of the capillary tubes 8 and 9. Therefore, the heights of the tips of the capillary tubes 8 and 9 are different,
There was a drawback that the amount of refrigerant flowing to each evaporator was uneven. If the amount of refrigerant becomes uneven, even though the capacity of the evaporator is originally determined by the resistance of the capillary tube, the capacity changes due to the amount of refrigerant.

Further, when the main body 1 is installed at an angle, the inlets of the capillary tubes are different, which may cause imbalance in the divided flow.

OBJECTS OF THE INVENTION The object of the present invention is to eliminate these drawbacks and to distribute the refrigerant evenly.

Structure of the Invention In order to achieve the above object, the present invention forms an outlet pipe from a single straight pipe, provides a notch in the straight pipe, and bends the straight pipe from the notch to make the end face heights uniform. This eliminates assembly errors and achieves even refrigerant distribution.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 10 denotes a cylindrical body of a refrigerant flow divider, and a refrigerant inlet 11 is formed in the upper part thereof into which a pipe 2 connected to an outlet of a condenser (not shown) is inserted. In addition, the cylindrical body 10
The lower surface thereof is open, and a hollow portion 12 communicating with the refrigerant inlet 11 is formed. 13 and 14 are discharge pipes connected to each evaporator (not shown). The discharge pipes 13, 14 are formed from an outlet pipe 15 consisting of a single capillary tube.

The outlet pipe 15 has a V-shaped notch 16 formed in its center. This cut 16 forms two suction ports 17 and 18. Also,
By bending the connecting portion 19 of the remaining outlet pipe 15 by 180 degrees in the direction of the arrow in FIG. body 10
The openings are formed along the parallel discharge pipes 13 and 14, and the discharge ports 13 and 14 are inserted and fixed by brazing or the like. This positions the outlet ends 20, 211 of the outlet pipe 15 to the outside of the cylindrical body 10, respectively.

The operation will be explained based on the above configuration.

In such a device, since the outlet pipe 15 forming the discharge pipes 13 and 14 is a capillary tube, a throttling action works, and the gas-liquid two-phase flow flowing in from the refrigerant inlet 11 is separated in the cylinder body 10 of the flow divider. is,
Liquid refrigerant will accumulate. Therefore, the flow separation is performed only in the liquid phase. At this time, the suction ports 17 and 18 sides of the discharge pipes 13 and 14 are connected at a connecting part 19 at a part of the entire circumference, so they are at the same height, and even if there is a deviation, this interval is minute. . Therefore, the amount of refrigerant discharged becomes uniform, and stable evaporator performance is obtained.
Further, even when the cylindrical body 10 is installed at an angle, since the amount of change in the tip height is small, the change in the shunt balance is small.

Although the outlet pipe 15 is a capillary tube, similar effects can be obtained by using other types of tubes.

Effects of the Invention As is clear from the above explanation, the present invention provides the following advantages:
This notch becomes the refrigerant suction port, so the heights can be made almost the same, allowing for even distribution of liquid refrigerant, and even if the cylinder is tilted, the suction ports are close together because they are connected at the connecting part. Therefore, unbalanced flow is less likely to occur. In addition, mistakes during assembly are eliminated, and the end faces of the inlet port can be aligned by bending the outlet pipe, reducing the number of connections to the cylinder, saving on silver solder, etc. for connections, and improving work efficiency. can be achieved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a conventional refrigerant flow divider, FIG. 2 is a cross-section view of a refrigerant flow divider according to an embodiment of the present invention, and FIG. 3 is a perspective view of the outlet pipe shown in FIG. 2 before processing. FIG. 4 shows a perspective view of the outlet pipe in FIG. 2 after processing. 10... Cylindrical body, 13, 14... Discharge pipe, 15...
...Outlet pipe, 17, 18...Intake port.

Claims (1)

[Claims] 1. A cylindrical body of a flow divider having a refrigerant inlet, a surplus connecting portion made by a cut inside the cylindrical body, an outlet pipe bent approximately parallel to the connecting portion, and an outlet pipe of the outlet pipe. A refrigerant flow divider comprising a hollow part located between a connecting part and a refrigerant inlet.