JPH04106467U - Diversion device - Google Patents

Abstract

(57) [Summary] [Purpose] A large number of branch pipes communicating with the refrigerant inlet pipe are arranged inside the container to separate refrigerant liquid and refrigerant gas from the container regardless of the container's inclination or refrigerant jetting state. Divides almost even flow to the refrigerant outlet pipe. [Structure] A large number of holes 5 are provided in the top wall 2 and bottom wall 4 of the container 15 that partitions the diversion chamber 13. A branch pipe 7 is fitted and fixed into a part of the hole 5 of the top wall 2 and the bottom wall 4 facing each other, and a rod 6 is fitted into the other part of the hole 5. The remaining hole 5 is communicated with the branch chamber 13, and a refrigerant outlet pipe 14 is connected to the peripheral wall side of the branch chamber 13. A plurality of branching units A to C configured in this manner are stacked one on top of the other, the refrigerant inlet pipe 12 is connected to the bottom wall 4 of the lowermost branching unit, and the hole 5 in the top wall 2 of the uppermost branching unit is closed. do.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is designed to divide the flow of refrigerant in the refrigeration cycle of air conditioning equipment, refrigeration equipment, etc. This relates to a flow device.

0002

[Conventional technology]

In order to improve local temperature control and heat exchanger performance in the refrigeration cycle, Addition of multiple units to the heat exchanger and making the refrigerant tube (heat transfer tube) smaller in diameter Several circuits have been adopted.

0003 However, it is extremely difficult to separate the refrigerant when the refrigerant gas and liquid are mixed. The condition of the refrigerant gas ejection, the inclination of the flow dividing device, and the amount of protrusion of the refrigerant inlet pipe into the flow dividing chamber Due to variations, etc., the flow rate of refrigerant to each refrigerant outlet pipe becomes uneven, resulting in heat loss. The degree of dryness in each circuit of the exchanger becomes uneven, and the performance of the heat exchanger cannot be fully demonstrated. There are some bad things.

0004 For example, in the flow dividing device disclosed in Japanese Utility Model Application Publication No. 54-60348, the end of the refrigerant inlet pipe is A large number of thin tubes (refrigerant outflow tubes) are connected and granules are accommodated on the upstream side of the connection, and the refrigerant is Allows liquid and refrigerant gas to flow uniformly from the refrigerant inlet pipe to each capillary through the gaps between the granules. However, this device converts the energy of the refrigerant liquid flowing in small droplets into granules. However, due to the irregular passage configuration, fluid resistance increases. There is a problem.

[0005] In the flow dividing device disclosed in Utility Model Application Publication No. 2-116656, the inside of the container that partitions the flow dividing chamber is A refrigerant inlet pipe is connected to the end wall of the container, while a plurality of refrigerant outlet pipes are connected to the end wall of the container. Refrigerant liquid and refrigerant gas are uniformly mixed inside the container and guided to the refrigerant outlet pipe. this minute According to the flow device, there is little influence from the tilt of the container or the state of the refrigerant jetting, and the refrigerant is distributed between each set. Although the refrigerant flows almost uniformly to the refrigerant outlet pipes, it is difficult to combine a large number of refrigerant outlet pipes into several sets. It takes time to connect the refrigerant outlet pipes, and the number of refrigerant outlet pipes connected to the container is also restricted due to the structure. limited.

[0006]

[Problem that the invention attempts to solve]

In view of the above-mentioned problems, the purpose of this invention is to provide a large number of pipes inside the container that communicate with the refrigerant inlet pipe. By installing a flow divider pipe, the refrigerant liquid and refrigerant can be separated regardless of the tilt of the container or the state of the refrigerant gas being ejected. To provide a flow dividing device that allows gas to flow almost equally from a container to each refrigerant outlet pipe. be.

[0007]

[Means to solve the problem]

In order to achieve the above object, the structure of the present invention is to A large number of holes are provided in the wall, and separate flow pipes and rods are installed in some of the opposing holes in the top and bottom walls. Connect the remaining hole to the diversion chamber, and connect the refrigerant outlet pipe to the peripheral wall of the diversion chamber. multiple flow divider units are stacked one on top of the other, and the lowermost flow divider is Connect the refrigerant inlet pipe to the bottom wall of the unit, and close the hole in the top wall of the uppermost diverter unit. This is what I did.

[0008]

[Effect]

When the refrigerant in the refrigerant inlet pipe flows in the form of droplets to the diverter chamber through the diverter tube, the inside of the container The refrigerant droplets are fragmented at the edges of a large number of branch pipes housed in close proximity to the refrigerant gas. They flow into each branch pipe together. The refrigerant that has flowed into each branch pipe is The refrigerant is distributed to the branch chambers of the container and flows from the refrigerant outlet pipes to each circuit of the heat exchanger. in each container A large number of branch pipes are arranged in a close-packed manner, so there is no risk of container tilting or refrigerant gas blowing out. Refrigerant flows uniformly into each branch chamber without being affected by any influence.

[0009]

[Example of idea]

FIG. 1 is a perspective view showing a schematic configuration of a flow dividing device according to the present invention. Flow divider shown The system consists of three branch units A, B, and C, but there are more branch units. can be superimposed. The refrigerant inlet pipe 12 is connected to the bottom wall of the lower division unit C. The top wall 2 of the upper flow dividing unit A is closed. Each branch unit A to C is The container 15 is provided with a container 15 having an oval or oval horizontal cross section, and the container 15 has a cylindrical shape. A large number of branch pipes are arranged in a close-packed manner in the branch chamber, and the pipes are radially outward from the branch chamber of the container 15. A refrigerant outlet pipe 14 extending in the overlapping direction of the flow dividing units is connected to the part protruding from the refrigerant outlet pipe 14. It will be done.

0010 As shown in FIG. 2, the container 15 of the upper distribution unit A has a cylindrical distribution chamber 13. an arc-shaped peripheral wall 3a that covers the refrigerant outlet pipe 14; and an arc-shaped peripheral wall 3c that continues to the peripheral wall of the refrigerant outlet pipe 14. , and a peripheral wall 3b connecting peripheral walls 3a and 3c. Upper end of peripheral wall 3 is closed by the top wall 2 (FIG. 1), and the lower end of the peripheral wall 3 is closed by the bottom wall 4. A refrigerant outlet pipe 14 is connected to the opening 14a of the ceiling wall 2. There are many walls on the top wall 2 and the bottom wall 4. A hole 5 is drilled. The arrangement of the holes 5 in the top wall 2 and the bottom wall 4 is exactly the same, and they are opposite to each other. A rod 6 is fitted into a part of the hole 5. A portion of the hole 5 in the bottom wall 4 communicates directly with the flow separation chamber 13 However, the branch chamber 13 communicates with the refrigerant outlet pipe 14 via the communication chamber 9. Insert the rod 6 on the ceiling wall 2 Holes 5 that do not match are closed or not pre-processed.

[0011] The upper flow divider unit A in the three-tier stacked flow divider has a hole 5 into which the rod 6 is fitted. The ratio of the hole 5 to which the rod 6 is not fitted is approximately 2:1. Bottom wall 4 where rod 6 is not fitted The hole 5 directly communicates with the diversion chamber 13, and the refrigerant inlet pipe 12 is connected to the diversion unit C, which will be described later. The refrigerant that has flowed into the branching chamber 13 of the branching unit A through the branching pipes of the rods 6 and 6 is It flows into the communication chamber 9 through the gap 8 between the two.

0012 As shown in Figure 3, the container 15 of the middle diversion unit B is the same as that of the distribution unit A Although they have the same structure, a rod 6 is fitted into a part of the opposing hole 5 in the top wall 2 and bottom wall 4, and the hole is closed. A branch pipe 7 is fitted into a part of the hole 5, and neither the rod 6 nor the branch pipe 7 is fitted into the remaining hole 5. The three sets of holes 5 are approximately the same in number.

[0013] As shown in Fig. 4, the container 15 of the lower division unit C is also the same as that of the division unit B. In this structure, a branch pipe 7 is fitted into a part of the opposing hole 5 of the top wall 2 and bottom wall 4, and the remaining Nothing is fitted into the hole 5. The hole 5 into which the flow branch pipe 7 is fitted and the flow branch pipe 7 are fitted. The ratio of holes 5 with no holes is approximately 2:1.

[0014] Each of the above-mentioned distribution units A, B, C preferably has a connection connecting the refrigerant outlet pipe 14. The chambers 9 are stacked one on top of the other so that they protrude radially outward at a rotational phase of 120° (FIG. 1), They are joined by welding, etc. In the above-mentioned flow dividing device, the refrigerant in the refrigerant inlet pipe 12 is It enters the diversion chamber 13 from the hole 5 without the diversion pipe 7 in the diversion unit C, passes through the communication chamber 9, and cools. It flows into the medium outlet pipe 14. On the other hand, the refrigerant flowing into the branch pipe 7 from the refrigerant inlet pipe 12 is Half of the diverter pipes 7 are connected to the diverter chamber 13 from the hole 5 where there is neither the diverter tube 7 nor the rod 6 in the diverter unit B. The refrigerant enters the refrigerant outlet pipe 14 through the communication chamber 9. The remaining half of the diverter pipe 7 is the diverter unit. It enters the diversion chamber 13 through the hole 5 without the rod in tube A, passes through the communication chamber 9, and goes to the refrigerant outlet pipe 14. flows.

[0015] As mentioned above, approximately 1/3 of the refrigerant in the refrigerant inlet pipe 12 is distributed to the dividing units C, B, A and flows from each refrigerant outlet pipe 14 to each circuit of the heat exchanger. Refrigerant inlet pipe 1 2 and the bottom wall 4 of the diverter unit C, the refrigerant liquid (see droplet 19 in Figure 5) is Since the holes 5 and the edges of the branch pipe 7 are divided into small parts, refrigerant liquid and refrigerant gas can flow to any hole 5. Flows smoothly at approximately the same rate (constant dryness). Diversion chamber 1 of each distribution unit Since a large number of holes 5, rods 6 or branch pipes 7 are arranged in the closest position to the container 1, 5 is tilted or the state of refrigerant gas ejected from each branch pipe 7 to the branch chamber 13 changes. , the amount of refrigerant flowing into each branch chamber 13 is kept approximately equal.

[0016] Note that a connecting piece is arranged in the gap 8 between the peripheral wall 3, rod 6, and diverter pipe 7 of each diverter unit. If this structure is adopted, the diverter unit except for the ceiling wall 2 should be made of aluminum alloy, etc. Can be cast into your body.

[0017] As shown in FIG. A large number of branch pipes 7a are accommodated in the container 15 in close proximity, and each branch unit is A rod or a stopper 18 is fitted into the interior of the diverter pipe 7a corresponding to points A to C. A long hole 17 is provided in the pipe wall of a, and the required branch pipe 7a is communicated with the required branch flow chamber 13. You can do it like this.

[0018]

[Effect of the idea]

As mentioned above, the present invention has a large number of holes in the top and bottom walls of the container that partition the separation chamber. , Separately fit and fix the diverter pipe and rod into parts of the mutually opposing holes in the top wall and the bottom wall, and then leave the remaining parts. Connect the hole to the diversion chamber and connect the refrigerant outlet pipe to the peripheral wall of the diversion chamber to construct a diversion unit. By stacking multiple diverter units one on top of the other, the bottom wall of the lowest diverter unit is cooled. The medium inlet pipe is connected and the hole in the top wall of the uppermost division unit is closed. When the refrigerant in the medium inlet pipe flows into the dividing chamber, the refrigerant droplets are broken up into small pieces at the edge of the dividing pipe. The refrigerant flows to each branch pipe, flows to the branch chamber of each container stacked in multiple layers, and from the branch chamber Flows into the outlet pipe.

[0019] Since a large number of branch pipes are arranged in a close-packed manner in each container, the refrigerant flows at the inlet of each branch pipe. The droplets are efficiently segmented and are not affected by the tilt of the container or the state of refrigerant gas ejection. First, the refrigerant liquid and refrigerant gas are divided into the respective division chambers in approximately equal proportions.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a flow dividing device according to the present invention.

FIG. 2 is a sectional plan view of the upper flow dividing unit.

FIG. 3 is a sectional plan view of a middle-stage branching unit.

FIG. 4 is a sectional plan view of the lower flow dividing unit.

FIG. 5 is a front sectional view of a flow dividing unit according to another embodiment.

[Explanation of symbols]

A to C: Diversion unit 2: Top wall 3: Peripheral wall 4: Bottom wall 5: Hole 6: Rod 7: Diversion pipe 12: Refrigerant inlet pipe 1
3: Diversion chamber 14: Refrigerant outlet pipe 15: Container

Claims (1)

[Scope of utility model registration request] Claim 1: A large number of holes are provided in the top and bottom walls of a container that partitions a diversion chamber, and a diversion pipe and a rod are individually fitted and fixed into some of the mutually opposing holes in the top and bottom walls, The remaining holes are communicated with the diversion chamber, and a refrigerant outlet pipe is connected to the peripheral wall of the diversion chamber to form a diversion unit.Multiple distribution units are stacked one on top of the other, and a refrigerant inlet pipe is connected to the bottom wall of the lowest diversion unit. A flow diversion device characterized in that the holes in the top wall of the uppermost diversion unit are closed.