JPH0134060Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a refrigerant diverter that diverts refrigerant to the evaporator of a refrigeration cycle of a refrigerator, vending machine, air conditioner, etc.

Conventional configuration and its problems FIG. 1 shows a conventional refrigerant flow divider.

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 1 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, the tips of the capillary tubes 8 and 9 were made to protrude into the hollow portion 4.

In such a device, since the capillary tubes 8 and 9 are provided at the discharge ports 6 and 7, a throttling effect is activated, and the gas-liquid two-phase flow flowing from the suction port 3 is
The liquid refrigerant is separated within the main body 1 of the flow divider and accumulates therein. 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 with the same alignment, but it is possible to align the insertion distances of the capillary tubes 8 and 9 from the discharge ports 6 and 7 of the lid 5. It was difficult.

The reason for this difficulty is that since there is no positioning of the lid 5 or the capillary tubes 8, 9, it is difficult to maintain a constant insertion distance into the hollow portion 4. In addition, if the size of the discharge ports 6, 7 and the diameter of the capillary tubes 8, 9 are almost the same, force is required when inserting the capillary tubes 8, 9, so it is difficult to determine the insertion distance. It was hot. In addition, the discharge ports 6, 7
If it is large, it will be easier to position the insertion allowance of the capillary tubes 8 and 9, but this will cause wobbling when fixed with silver solder, etc., so the tips of the capillary tubes 8 and 9 may be tilted within the hollow part 4. The insertion distance from the lid 5 is different. Therefore,
The heights of the tips of the capillary tubes 8 and 9 are different, resulting in an uneven amount of refrigerant flowing into the evaporator. If the amount of refrigerant is non-uniform, the capacity of the evaporator, which is originally determined by the resistance of the capillary tube, will change as the amount of refrigerant changes.

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

Purpose of the invention The purpose of the invention is to eliminate these drawbacks and to distribute the refrigerant evenly.

Structure of the invention In order to achieve this object, the invention provides a substantially horizontal pipe with openings for pipe insertion formed at both ends, a positioning part for determining the insertion distance of the pipe, and a positioning part for determining the insertion distance of the pipe. A refrigerant outlet facing the positioning part and formed on the bottom of the pipe, a hollow outer shell covering the positioning part and the outlet, and a refrigerant inlet provided on the upper side of the outer shell. , so that the outlet ports of the pipes are at approximately the same height.

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

In the figure, 10 is the main body of the refrigerant flow divider, and an inlet 14 is formed on the upper surface of an outer shell 12 having a hollow part 11 into which a pipe 13 connected to an outlet of a condenser (not shown) is inserted. . 15 is the outer shell 1
Pipes 16 and 17 consisting of capillary tubes that are connected to separate evaporators (not shown) from both ends are inserted through the pipes 2 . This pipe 15 is provided substantially horizontally, and the pipe 15 is provided substantially horizontally.
A positioning portion 18 for determining the insertion distance of the pipes 6 and 17 is formed by recessing the upper end of the pipe 15. This positioning section 18 is located below the inflow port 14. 19 is a refrigerant outlet, which is connected to the pipe 15.
It is formed at a position opposite to the positioning section 18 on the lower surface of the . This outlet 19 is connected to the pipes 16 and 1.
7 is inserted so that it will not be blocked.
is to be determined.

The suction port 14, the piping 13, and the outer shell 12
and pipe 15, pipe 15 and pipes 16 and 17,
Both are attached so as to seal the hollow part 11 with silver solder or the like. Further, the positioning part 18 and the outlet 19 of the pipe 15 are connected to the hollow part 11 of the outer shell 12.
It is covered with Further, the outflow port 19 is formed smaller than the inflow port 14.

In such a device, the gas and liquid 2 are connected to the pipe 13.
The phase refrigerant flows into the hollow portion 11 . and,
Liquid refrigerant accumulates below the hollow part 11. At this time, since the outflow port 19 of the pipe 15 is smaller than the inflow port 14, a restriction is activated, and the liquid level becomes higher than the outflow port 19. As a result, the completely liquid refrigerant flows to the pipes 16 and 17, and an even distribution balance can be obtained by not including gas. In other words, non-uniformity in the branch flow balance due to the installation state of the pipes 16 and 17 does not occur. Further, even if the main body 10 is installed at an angle, the position of the outlet 19 is common to the pipes 16 and 17, so that there is no possibility that the flow will become unbalanced.

Effects of the invention As is clear from the above explanation, the present invention forms a positioning part that determines the pipe insertion allowance in the pipe provided approximately horizontally in the outer shell of the hollow part, and also forms a positioning part on the lower surface facing the positioning part. By forming an outlet in the common outlet, the liquid refrigerant passing through the common outlet is divided into each pipe, so that the balance of the divided flow can be kept constant and the cooling capacity can be maintained uniformly.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a conventional refrigerant flow divider, and FIG. 2 is a cross-sectional view of a refrigerant flow divider showing an embodiment of the present invention. 11...Hollow part, 12...Outer shell, 13...Piping, 14...Suction port, 15...Pipe, 16,1
7...Piping, 18...Positioning section, 19...Discharge port.

Claims (1)

[Scope of utility model registration request] A substantially horizontal pipe with openings for pipe insertion formed at both ends, a positioning part formed on this pipe to determine the insertion distance of the pipe, and a refrigerant formed on the bottom surface of the pipe opposite to this positioning part. A refrigerant flow divider comprising: an outflow port; a hollow outer shell that covers the positioning portion and the outflow port; and a refrigerant inlet provided on the upper surface side of the outer shell.