JPH02197769A - Flow divider - Google Patents

Abstract

PURPOSE:To mix together two phases of gas and liquid by collision, to prevent the occurrence of air residence and liquid residence, and to enable realization of uniform division of a flow by a method wherein a collision wall is joined with the tip of an inflow pipe to change the flow in the inflow pipe approximately to a right angled direction, and outflow pipes are radially joined with the wall surface of the inflow pipe. CONSTITUTION:A flow divider 11 is formed with an inflow pipe 12, a collision wall 13 joined with the tip of the inflow pipe to change a flow in the inflow pipe approximately to a right angled direction, and outflow pipes 14 radially joined to the wall surface of the inflow pipe. A refrigerant flowing through the inflow pipe 12 is divided in a state of two phase flows of gas phases 15 and 16 and flows out to the outflow pipes 14. In this case, the refrigerant in an uneven two-phase flow state within the inflow pipe 12 is collided with the collision wall 13 and mixed for uniformization. The refrigerant is then radially spread along the collision wall 13 and divided to the outflow pipes 14. In this case, since a flow division part has no volume part where liquid residence and gas residence occur, the gas and liquid mixing state of the refrigerant is left uniformized by means of a mixing effect produced due to collision, and the refrigerant is brought into uniform division of a flow.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a flow divider for uniformly dividing a refrigerant in a refrigeration cycle of an air conditioner or a refrigerator.

BACKGROUND OF THE INVENTION In recent years, flow dividers have been frequently used to cope with the multiplication of refrigeration systems and the creation of multiple circuits due to the reduction in diameter of heat exchanger tubes in heat exchangers, and their importance has been increasing.

Hereinafter, a conventional flow divider will be explained with reference to the drawings.

FIG. 4 shows the shape of a conventional flow divider, and FIG. 6 shows the state of the refrigerant inside the flow divider.

In FIGS. 5 and 6, 1 is a flow divider which is connected to a cylindrical container 2, an inflow pipe 3 connected to one end of the cylindrical container 2, and a plurality of outflow pipes 4 connected to the other end. configured.

The operation of the flow divider constructed as described above will be explained using FIG. 5.

In the flow divider 1, the refrigerant flowing into the cylindrical container 2 from the inflow pipe 3 is in a gas-liquid two-phase state of a gas phase 6 and a liquid phase 6. This refrigerant passes through the flow divider 1 while being distributed to a plurality of outflow pipes 4, but a part of the liquid phase 6 collides with the upper wall surface of the cylindrical container 2, falls, stays in the lower part of the cylindrical container 2, and circulates. A liquid reservoir is formed. Similarly, a part of the gas phase 6 is retained and circulated in the upper part of the cylindrical container 2 to form an air pocket.

Problems to be Solved by the Invention However, with the above configuration, the flow of the refrigerant is disturbed by the incoming two-phase flow on the liquid surface of the liquid reservoir, and at the same time, the amount of the accompanying liquid phase θ becomes uneven, and, for example, the flow of the refrigerant becomes uneven. Vessel 1
In the case where the liquid level is inclined, the liquid level approaches one of the plurality of outflow pipes 4, so that the branching of the flow to each outflow pipe 4 has a large unstable factor.

Furthermore, since the tubular container 2 connects a plurality of outflow pipes 4, it not only inevitably becomes larger and more expensive, but also has many joints, which poses problems in terms of reliability against leakage. Ta.

The present invention solves the above problems and provides a flow divider that can perform uniform and stable flow division, is small in size, is low in cost, and has high reliability against leakage.

Means for Solving the Problems In order to solve the above problems, the flow divider of the present invention includes an inflow pipe, a collision wall joined to the tip of the inflow pipe that changes the flow in the inflow pipe in a substantially perpendicular direction, and an inflow pipe wall surface. It is composed of a plurality of outflow pipes connected radially to the outflow pipe.

Effect: With the above-described configuration, the present invention causes the flow of refrigerant flowing through the inflow pipe to collide with the collision wall to advance the mixing of the gas phase 9gI phase and eliminate the internal volume portion where liquid pools and gas pools occur. Therefore, it is possible to divide the flow evenly by allowing the flow to flow smoothly into the radially connected outflow pipes. Furthermore, since the outflow pipe is directly joined to the inflow pipe in a radial manner, the conventional cylindrical container is not required, and the system is small, low cost, and highly reliable against leakage.

EMBODIMENTS Below, flow dividers according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the appearance of a flow divider according to a first embodiment of the present invention, and FIG. 2 shows its sectional view.

Further, FIG. 3 shows a second embodiment of the present invention, and a fourth embodiment of the present invention is shown in FIG.
The figure shows its cross-sectional view. In Figures 1 to 4, 1
1.11' indicates the flow divider, 12.1 indicates the inflow pipe, 13
, 13' is a collision wall joined to the tip of the inflow pipe, 14,
Reference numeral 14' denotes a plurality of outflow pipes radially joined to the wall surface of the inflow pipe.

The operation of the flow dividers 11 and 11' configured as described above will be explained below.

The operation of the first embodiment and the second embodiment is similar, and will be explained using FIG. 2 of the first embodiment.

The refrigerant flowing through the inflow pipe 12 is divided into the outflow pipe 14 in a two-phase flow of a gas phase 16 and a liquid phase 16 and exits. At this time, the refrigerant in the two-phase flow, which was non-uniform in the inflow pipe 12, collides with the collision wall 13 and is mixed, and the gas phase 15
The mixing state of the liquid phase 16 and the liquid phase 16 is made uniform. The homogenized refrigerant spreads radially along the collision wall 13 and is divided into an outflow pipe 14 radially joined to the wall surface of the inflow pipe. At this time, since there is no volumetric area in which liquid pools or gas pools are formed in the divided flow portion, the gas-liquid mixing state of the refrigerant remains uniform due to the mixing effect due to the collision, and therefore the refrigerant is evenly divided.

In addition, because the outflow pipe is connected radially directly to the inflow pipe, it is more compact than conventional flow dividers.

Cost reduction is possible, and since there are few joints, reliability against leakage is also high. In particular, the second embodiment allows for significant downsizing.

As described above, according to this embodiment, the inflow pipe and the collision wall joined to the tip of the inflow pipe that changes the flow inside the inflow pipe in a substantially perpendicular direction, and the plurality of outflow pipes joined radially to the wall surface of the inflow pipe. By configuring this structure, it is possible to achieve uniform flow division, downsizing, and cost reduction, as well as improving reliability against leakage.

In this embodiment, the collision wall has a planar shape, but the same effect can be obtained even if it is semicircular. Further, the same effect can be obtained by using an integral shape by drawing or the like.

Effects of the Invention As described above, the present invention includes an inflow pipe, a collision wall joined to the tip of the inflow pipe for changing the flow inside the inflow pipe in a substantially perpendicular direction, and a plurality of outflow pipes joined radially to the side surface of the inflow pipe. With this structure, gas-liquid two-phase mixing occurs through collision, eliminating air and liquid pools and achieving uniform flow separation. Further, it is possible to reduce the size and cost, and has high reliability against leakage.

[Brief explanation of the drawing]

Fig. 1 is an external view of a flow divider according to a first embodiment of the present invention, Fig. 2 is a sectional view of Fig. 1, Fig. 3 is an external view of a flow divider according to a second embodiment of the present invention, and Fig. 4 is an external view of a flow divider according to a first embodiment of the present invention. FIG. 3 is a sectional view, FIG. 6 is an external view of a conventional flow divider, and FIG. 6 is a sectional view of FIG. 5. 11... Flow divider, 12... Inflow pipe, 1
3... Collision wall, 14... Outflow pipe. Name of agent: Patent attorney Shigetaka Awano and 1 other list

Claims (1)

[Claims] A flow divider consisting of an inflow pipe, a collision wall disposed at the tip of the inflow pipe that changes the direction of flow within the inflow pipe, and a plurality of outflow pipes radially joined to the wall surface of the inflow pipe.