JP2001090893A - Distributing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distributing device capable of separating a coolant at an arbitrary distribution factor by a simple structure. SOLUTION: This distributing device 1 is made up of two branch tube parts 2a, 2b and a single tube 3 connected to the tube parts 2a, 2b, and the tube 3 has a curved part 3a. A plane including the tube parts 2a, 2b is inclined at an angle more than 0 deg. and less than 90 deg. relative to a plane including the tube 3. A fluid flowing into the device 1 receives a centrifugal force when it passes through the curved part 3a of the tube 3 of the device 1, and the amount of coolant flowing on the outer circumferential side of the curved part 3a is larger than that of coolant flowing on the inner circumferential side of the curve. The flow rates of two lines can be changed by changing the angle α.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution device used when a refrigerant is distributed to a plurality of systems and connected to a heat exchanger of an air conditioner, for example.

[0002]

2. Description of the Related Art Conventionally, as this kind of distribution apparatus, FIG.
There is something like that shown in The distribution device 41 is composed of a branch pipe part 42 branched into two parts, and a straight single pipe part 43 connected to the branch pipe part 42. The fluid flowing into the single pipe part 43 is divided into two systems by the branch pipe part 42. Divert to FIG. 4 is a schematic diagram showing a state in which the distribution device 41 is used for a refrigerant pipe of an outdoor unit of an air conditioner. The refrigerant flowing from the indoor unit of the air conditioner (not shown) in the direction indicated by the arrow A passes through the control valve 52 and is divided into two systems by the distribution device 41. Then, after being decompressed by the capillaries 53 and 54 provided one by one in each system, the refrigerant flows into the upper part 55a and the lower part 55b of the heat exchanger 55, where heat is exchanged between the refrigerant and the outside air.

[0003]

However, in the above-mentioned conventional distributor, the upper part 55a of the heat exchanger 55 has a larger inflow resistance than the lower part 55b.
If the resistances of the capillaries 53 and 54 between the heat exchanger 1 and the heat exchanger 55 are equal to each other, the refrigerant is transferred to the upper part 55 of the heat exchanger 55.
More water flows to the lower portion 55b than to a. Therefore, the capillaries 53 and 54 are adjusted so that the heat exchanger 5
The resistance of the capillary 53 connected to the upper part 55a of the heat exchanger 55 is made smaller than the resistance of the capillary 54 connected to the lower part 55b, so that the amount of the refrigerant flowing through the upper part 55a and the lower part 55b of the heat exchanger 55 becomes equal. There is a need. However,
The resistance of the capillaries 53 and 54 is sufficiently larger than the inflow resistance of the upper part 55a and the lower part 55b.
If the difference in the inflow resistance between the 5a and the lower portion 55b can be neglected, there is no need to adjust the respective capillaries 53 and 54. Therefore, two capillaries 53 and 54 are required, and there is a case where it is necessary to adjust the capillaries 53 and 54 in some cases, so that there is a problem that the manufacturing cost of the refrigerant pipe increases.

[0004] Therefore, an object of the present invention is to divide a refrigerant at an arbitrary distribution rate with a simple structure, so that it is not necessary to provide a capillary in each of the divided systems to adjust the refrigerant pressure. An object of the present invention is to provide a dispensing device that can manufacture a refrigerant pipe at low cost because only one capillary is required.

[0005]

In order to solve the above-mentioned problems, a distribution device according to the present invention comprises a plurality of branch pipes,
A single pipe connected to the branch pipe portion, wherein the single pipe has a curved portion, and a plane including the bent portion of the single pipe and a plane including the plurality of branch pipe portions exceed 0 ° and exceed 90 °. It is characterized by being inclined at an angle of less than °.

[0006] The refrigerant, particularly the liquid refrigerant, which flows through the curved portion by flowing through the single tube is such that the refrigerant (especially the liquid refrigerant) flowing on the outer peripheral side of the curve is changed by the centrifugal force into the refrigerant (especially the liquid refrigerant) flowing on the inner peripheral side of the curve. More than). Therefore, if the angle between the plane including the branch pipe section and the plane including the curved section of the single pipe is zero,
When the angle is °, the fluid flowing out of the branch pipe portion flows more in the branch pipe portion on the outer peripheral side of the curve of the single pipe than in the branch pipe section on the inner peripheral side of the curve of the single pipe. If the angle is 90
°, the amounts of the refrigerant flowing through all the branch pipe portions become equal. Therefore, according to the first aspect of the present invention, the angle between the plane including the branch pipe portion and the plane including the single pipe exceeds 90 ° and exceeds 90 °.
The coolant is distributed to the branch pipe portion, particularly the liquid coolant, in accordance with the inflow resistance of the heat exchanger.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

[0008] As shown in FIG.
Branch pipe portions 2a and 2b,
a, 2b, and the single pipe 3 has a curved portion 3a. The plane including the branch pipe sections 2a and 2b and the plane including the curved section 3a of the single pipe 3 are inclined, and an angle α formed by both planes is about 30 °.

The branch pipe sections 2a and 2b and the single pipe 3 may be formed as a single piece or separate pieces.

FIG. 2 is a schematic diagram showing a refrigerant pipe of an outdoor unit of an air conditioner using the distribution device 1 having the above configuration. A pipe led from an unillustrated indoor unit is connected to the capillary 12 via the control valve 11 and then to the distribution device 1.
The pipes branched into two systems by the distribution device 1 are connected to the upper part 13a and the lower part 13b of the heat exchanger 13, respectively.

In the refrigerant pipe having the above structure, the refrigerant sent from the indoor unit (not shown) of the air conditioner as indicated by an arrow A passes through the control valve 11 and is decompressed by the capillary 12. The depressurized refrigerant flows into the distribution device 1 and receives a centrifugal force when passing through the curved portion 3a of the single pipe 3 of the distribution device 1. The refrigerant that receives the centrifugal force, particularly the liquid refrigerant, flows more on the outer peripheral side of the curve than on the inner peripheral side of the curve. When the refrigerant flows into the branch pipes 2a and 2b of the distribution device 1, the plane including the branch pipes 2a and 2b is inclined at an angle of about 30 ° with the plane including the single pipe 3 so that the flow rate is reduced. The refrigerant on the outer peripheral side of the curved portion of the single tube 3 and the refrigerant on the inner peripheral side of the curved portion having a small flow rate are distributed to the two branch pipe portions 2a and 2b. The refrigerant distributed to the above two is that the refrigerant flowing through the branch pipe portion 2a on the outer peripheral side of the curved single pipe having a large flow rate is disposed on the upper portion 13a of the heat exchanger 13 on the inner peripheral side of the curved single pipe having a small flow rate. The refrigerant flowing through the branch pipe portion 2b is sent to the lower portion 13b of the heat exchanger 13. The upper part 13a of the heat exchanger 13 has the lower part 1a.
3b, the refrigerant is sent to the upper part 13a of the heat exchanger 13 in a large amount, and the refrigerant is sent to the lower part 13b in a small amount. The amount of refrigerant flowing through the upper part 13a and the lower part 13b of the vessel becomes equal. Therefore, even if capillaries are not provided on the downstream side of the branch pipe sections 2a and 2b of the distribution device 1, the above-mentioned inclination angle α is adjusted according to the resistance on each downstream side, and the refrigerant is distributed at a desired distribution ratio. it can.

In the above-described embodiment, the plane including the branch pipe sections 2a and 2b is different from the plane including the curved section 3a of the single pipe 3 by about 3
Although it is inclined at an angle of 0 °, the angle α between the two planes is set to 0 ° according to the inflow resistance of the heat exchanger connected to the distribution device 1.
May be inclined at another angle exceeding 90 ° and less than 90 °. When the pipe is not connected to the branch pipe sections 2a and 2b, α is 0 °.
, The ratio of the refrigerant flowing through the inner branch pipe portion 2b to the refrigerant flowing through the outer branch pipe portion 2a increases, and the closer to 90 °, the closer the ratio becomes to 1. Therefore, the branch pipe section 2
The inclination angle α is set to 0 ° <α in accordance with the resistance of the outlet side of a and 2b.
It may be adjusted within the range of <90 °.

In the above-described embodiment, the branch pipe sections 2a and 2b of the distribution device 1 are distributed to two systems, but may be distributed to three or more systems.

[0014]

As is apparent from the above description, according to the distribution device of the first aspect of the present invention, the plane including the curved portion of the single pipe and the plane including the plurality of branch pipes exceed 90 °. Since the angle is inclined at less than 0 °, an appropriate flow rate can be distributed to the plurality of branch pipe sections, and an equal amount can be supplied to the heat exchangers having different inflow resistances connected to the branch pipes of the distributor. Can flow. Further, since the distribution device can appropriately distribute the flow rate of the refrigerant to be sent to the branch pipe portion, there is no need to provide a plurality of capillaries having a resistance sufficiently larger than the inflow resistance of the heat exchanger downstream of the distribution device, In addition, there is no need to provide a plurality of capillaries having different resistances downstream of the distribution device to adjust the flow rate of the refrigerant, and the number of the capillaries can be reduced to one. Therefore, the refrigerant pipe can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a diagram showing a distribution device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a refrigerant pipe of an outdoor unit of an air conditioner using the distribution device of the embodiment shown in FIG.

FIG. 3 is a diagram showing a conventional distribution device.

FIG. 4 is a schematic diagram of a refrigerant pipe of an outdoor unit of an air conditioner using a conventional distribution device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Distributor 2a, 2b Branch pipe part 3 Single pipe 3a Curved part (alpha) Incline angle between the plane containing a branched pipe part and the plane containing a curved part of a single pipe

Claims (1)

[Claims] 1. A single pipe (3) connected to a plurality of branch pipes (2a, 2b) and the branch pipes (2a, 2b). The single pipe (3) has a curved portion (3a). A plane including the curved portion (3a) of the single pipe (3) and a plane including the plurality of branch pipe sections (2a, 2b) exceed 0 ° and 90 °
A dispensing device characterized by being inclined at an angle (α) of less than.