JP2002277107A - Distributor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distributor which can distribute refrigerant received from an inflow tube while varying the ratio. SOLUTION: The distributor 1 comprises an inflow tube 3, an enlarged bottomed tubular header 2, and first and second outflow tubes 4 and 5 inserted into a pair of holes 2b and 2c made in the outer circumferential surface of the header 2 and welded in place wherein the opening 4a of the first outflow tube 4 is constricted by means of a surrounding flange as compared with the opening 5a of the second outflow tube 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow divider,
More specifically, the present invention relates to a configuration in which a ratio of a refrigerant amount is changed and divided into a plurality of refrigerant flow paths.

[0002]

2. Description of the Related Art A conventional flow divider is used, for example, as shown in FIG. The air conditioner 50 shown in FIG. 4 has a front suction port 51 at the top front of the main body, and a top suction port 5 at the top.
2 are provided, and an outlet 53 is provided at the lower part of the front surface. An air passage connecting the front suction port 51 and the top suction port 52 to the air outlet 53 has a vertical portion 54a and a rear inclined portion 5 having an upper end of the vertical portion 54a bent and inclined rearward.
4b, and the rear inclined portion 54b
A heat exchanger 54 formed of an inverted V-shape constituted by a rear heat exchanger comprising a downwardly inclined portion 54c having an upper end bent and inclined downward, and a blower fan 55 are provided.

[0003] The vertical portion 54a of the heat exchanger 54,
The rear inclined portion 54b and the lower inclined portion 54c are connected by a connection pipe 58 having a flow divider 58a, and two refrigerant flow paths 56a and
6b is provided. The refrigerant flow passage 56a extends from the flow divider 58a of the connection pipe 58 to the rear inclined portion 54b.
Circulates through the vertical portion 54a, returns to the rear inclined portion 54b, and returns to the pipe 6 connected to the rear inclined portion 54b.
0, the refrigerant flow path 56b reaches the lower inclined portion 54c from the branch pipe 58a of the connection pipe 58, circulates through the lower inclined portion 54c, and returns to the rear inclined portion 54b again. It is formed so as to reach a pipe 59 connected to the rear inclined portion 54b. During the cooling operation, the refrigerant that has flowed into the vertical portion 54a from the pipe 57 is evenly divided by the flow divider 58a through the connection pipe 58, and flows through the first refrigerant flow path 56a and the second refrigerant flow path 56b. The heat exchange is performed, and the heat flows out of the pipes 59 and 60, respectively.

However, since the flow divider 58a is mounted to be inclined rearward, the first refrigerant flow path 56
a, the refrigerant tends to flow more easily into the second refrigerant flow path 56b, and this phenomenon becomes remarkable particularly during low cooling operation. If a difference in the amount of heat exchange occurs between the first refrigerant flow path 56a and the second refrigerant flow path 56b, it affects the heat exchange efficiency of the heat exchanger 54 as a whole, and the temperature of the blower fan 55 There is a possibility that air with a difference may flow in and a problem that dew water is generated on the surface of the blower fan 55 may occur.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a flow divider which can supply an optimal amount of refrigerant to each refrigerant flow path by changing the ratio of the flow.

[0006]

According to the present invention, in order to solve the above-mentioned problems, an inflow pipe is connected to an upper portion or a lower portion, and an enlarged bottomed cylindrical header is formed on an outer peripheral surface of the header. A pair of insertion holes, a first outflow pipe and a second outflow pipe inserted and welded into the same insertion hole, the opening of the first outflow pipe opened in the header, the second outflow pipe Is configured to be narrower than the opening.

[0007] Further, the inflow pipe is connected to the upper or lower part, and the bottomed cylindrical header having an enlarged diameter, a pair of connection pipes protruding from the outer peripheral surface of the header, and the connection penetrating through the header. The outlet pipe is slidably supported by the pipe and has outlets at both ends.The outlet pipe is divided into right and left by a partition plate, and a plurality of flow outlets are formed on the outer peripheral surfaces on both sides of the partition plate. Perforating an inlet, sliding the outflow pipe to adjust the position of the partition plate, changing the ratio of the divided flow from the header to each of the outflow ports via the inflow port, and changing the ratio to the connection pipe. It is configured to be welded.

In addition, an inflow pipe is connected to the upper or lower part, and the bottomed cylindrical header having an enlarged diameter, a pair of connection pipes protruding from the outer peripheral surface of the header, and the connection pipe are slidable respectively. Supported by a pair of outlet pipes having a plurality of inlets perforated in the base, and by changing the amount of insertion of the outlet pipes into the header, each of the outlet pipes through the inlets. The ratio of the divided flow rate to be divided into the connection pipes is changed, and each of the connection pipes is welded to the connection pipe.

[0009] Further, the inflow pipe is connected to the upper or lower part, and is biased to one of the cylindrical header having an enlarged diameter, the outflow pipe connected to both sides of the header, and the outflow pipe. A flow dividing plate which hangs down from an upper inner wall of the header and changes a ratio of a flow divided into the outflow pipe.

[0010]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Figure 1
1A is an external perspective view showing a flow divider according to a first embodiment of the present invention, and FIG. 1B is a sectional view thereof. FIG. 2 is a sectional view showing a state where the flow divider according to the present invention is mounted on an air conditioner. FIGS. 3A to 3C are cross-sectional views showing the second to fourth embodiments. As shown in the external view of FIG. 1A and the cross-sectional view of FIG. 1B, the flow distributor 1 according to the present invention connects the inflow pipe 3 to the lower portion 2a and expands the diameter of the bottomed cylindrical header 2. A pair of insertion holes 2b and 2c formed in the outer peripheral surface of the header 2;
And a second outflow pipe 5 inserted into and welded to 2c. As shown in the cross-sectional view of FIG. 1B, the first outflow pipe 4 and the second outflow pipe 5 are inserted into the header 2 and the opening 4 of the first outflow pipe 4 is formed.
a is narrowed from the opening 5a of the second outflow pipe 5 by a flange provided on the periphery.

When the refrigerant flows in from the inflow pipe 3 of the flow divider 1, the refrigerant advances to the leading end of the header 2 and flows backward in a swirling manner. The refrigerant flows from the openings 4a and 5a, respectively. It flows out to the first outflow pipe 4 and the second outflow pipe 5. At this time, the flow velocity of the refrigerant is reduced by the enlarged header 2 and the flow velocity is made uniform, so that the refrigerant flows smoothly into the openings 4a and 5a. Further, the amount of the refrigerant flowing into the first outflow pipe 4 by the narrowed opening 4 a is smaller than the amount of the refrigerant flowing into the second outflow pipe 5.

Next, mounting of the flow divider 1 on an air conditioner will be described. The air conditioner 30 shown in FIG.
2 are provided, and an outlet 33 is provided at the lower part of the front surface. In the air passage connecting the front suction port 31 and the top suction port 32 with the outlet 33, fins arranged in parallel and heat transfer tubes arranged in a meandering manner perpendicular to the fins are provided. A heat exchanger 34 and a blower fan 35 are provided. The heat exchanger 34 has a vertical portion 34a, a rear inclined portion 34b in which the upper end of the vertical portion 34a is bent and inclined rearward, and an upper end of the rear inclined portion 34b is bent and inclined downward. The first refrigerant flow path 36a and the second refrigerant flow path 36b are provided in the inverted V-shape formed by the lower inclined portion 34c. Further, one end of the inflow pipe 3 communicating with the first connection port 37 provided in the vertical part 34a is connected to the vertical part 34a, and the other end of the inflow pipe 3 is connected to the flow divider 1 and the same flow is divided. The first outflow pipe 4 of the vessel 1 is connected to the heat transfer tube of the lower inclined portion 34c, and the second outflow tube 5 is connected to the heat transfer tube of the rear inclined portion 34b.

The first refrigerant flow passage 36a passes through the second outflow pipe 5 through the heat transfer tubes in the front row of the rear inclined portion 34b and the vertical portion 34a, and is connected to the vertical portion 34a and the rear inclined portion 34b. Passing through the rear row of heat transfer tubes, the rear inclined portion 34b
The second refrigerant flow path 36b is formed so as to reach the second connection port 40 provided in the first outlet pipe 4, and circulates from the first outflow pipe 4 to the front row and rear row heat transfer pipes of the lower inclined portion 34c. It is formed so as to reach the heat transfer tube in the rear row of the rear inclined portion 34b and to be connected to the third connection port 39 provided in the rear inclined portion 34b.

Next, the operation of the flow divider 1 will be described. The first refrigerant flow path 36a is provided at the rear inclined portion 34b.
From the vertical portion 34a to the vertical portion 34a, the difference in height is large, and the connection port of the second outflow pipe 5 to the rear inclined portion 34b is higher than the opening portion 5a. In this case, the flow path resistance is large as compared with the above, and it is difficult for the refrigerant to flow. The flow of the refrigerant flowing into the flow divider 1 from the first connection port 37 is made uniform, and the first refrigerant flow path 36a is formed by the structure of the flow divider 1 described above.
More refrigerant flows than the second refrigerant flow path 36b, so that the first refrigerant flow path 36
a and the second refrigerant flow path 36b is maintained in a path balance.

In the second embodiment, as shown in FIG. 3 (A), a pair of connecting pipes 6a are protruded from the outer peripheral surface of the header 6 and can slide through the header 6 to the connecting pipe 6a. , The inside is partitioned by a partition plate 7a, and a plurality of outlets 7b are formed in an outer peripheral surface around the partition plate 7a, and the position of the partition plate 7a is adjusted in the header 6,
It is composed of an inflow pipe 7 welded to the connection pipe 6a, and the flow can be divided by changing the ratio of the amount of refrigerant flowing from the inflow pipe.

In the third embodiment, as shown in FIG. 3B, a pair of connecting pipes 8a are protruded from the outer peripheral surface of the header 8, and a plurality of inflow ports 9a and 10a are formed in the base. Each of the outflow pipes 9 and 10 having an outflow opening at the tip is connected to the connection pipe 8
a is slidably provided with respect to a, and by changing the respective insertion amounts of the outflow pipes 9 and 10 into the header 8 and welding them to the connection pipe 8a, the split ratio can be changed. .

In the fourth embodiment, as shown in FIG. 3C, an outflow pipe 12 and an outflow pipe 13 are respectively connected to both sides of a header 11, and either of the outflow pipe 12 or the outflow pipe 13 is connected. A flow divider 11a is provided on one side and is suspended from the upper inner wall of the header 11, so that the flow can be divided by changing the ratio of the amount of refrigerant flowing from the inflow pipe.

[0018]

As described above, according to the present invention,
By supplying an optimal amount of refrigerant to each of the refrigerant flow paths while changing the ratio of the branch flow, a flow divider capable of maintaining the balance of the plurality of refrigerant flow paths provided in the air conditioner can be provided.

[Brief description of the drawings]

FIG. 1A is an external perspective view showing a flow divider according to a first embodiment of the present invention. (B) is a cross-sectional view showing a flow divider according to the first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an air conditioner equipped with a flow divider according to the present invention.

3A is a cross-sectional view illustrating a current divider according to a second embodiment of the present invention. FIG. 3B is a cross-sectional view illustrating a current divider according to a third embodiment of the present invention. FIG. FIG. 10 is a cross-sectional view illustrating a flow divider according to a fourth embodiment of the present invention.

FIG. 4 is a sectional view showing an air conditioner equipped with a flow divider according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Divider 2 Header 2a Lower part 2b Insertion hole 2c Insertion hole 3 Inflow pipe 4 First outflow pipe 4a Opening 5 Second outflow pipe 5a Opening 6 Header 6a Connection pipe 7 Outflow pipe 7a Partition plate 7b Outflow 8 Header 8a Connection Pipe 9 Outflow pipe 9a Outflow port 10 Outflow pipe 10a Outflow port 11 Header 11a Distribution plate 12 Outflow pipe 13 Outflow pipe 30 Air conditioner 31 Front suction port 32 Top suction port 33 Blow port 34 Heat exchanger 34a Vertical section 34b Back slope section 34c Lower inclined portion 35 Blower fan 36a First refrigerant flow path 36b Second refrigerant flow path 37 First connection port 39 Third connection port 40 Second connection port

Claims (4)

[Claims] 1. An inflow pipe is connected to an upper portion or a lower portion, and has a cylindrical header having an enlarged diameter and a bottom, a pair of insertion holes formed in an outer peripheral surface of the header, and inserted into the insertion hole and welded. A first outflow pipe and a second outflow pipe, wherein the opening of the first outflow pipe opened in the header is narrower than the opening of the second outflow pipe. vessel. 2. An inflow pipe connected to an upper or lower part, a cylindrical header having an enlarged bottom and a pair of connection pipes projecting from an outer peripheral surface of the header, and the connection penetrating through the header. The outlet pipe is slidably supported by the pipe and has outlets at both ends.The outlet pipe is divided into right and left by a partition plate, and a plurality of flow outlets are formed on the outer peripheral surfaces on both sides of the partition plate. Perforating an inlet, adjusting the position of the partition plate by sliding the outflow pipe, changing the ratio of the divided flow from the header to each of the outlets through the inflow port,
A flow divider characterized by being welded to the connection pipe. 3. An inflow pipe is connected to an upper or lower part, and has a cylindrical header having an enlarged diameter, a pair of connection pipes protruding from an outer peripheral surface of the header, and slidable on the connection pipe. Supported by a pair of outlet pipes having a plurality of inlets perforated at the base, and by changing the amount of insertion of the outlet pipes into the header, each of the outlet pipes via the inlets. A flow divider characterized in that the ratio of the divided flow rates of the divided pipes is changed and each of the divided pipes is welded to the connection pipe. 4. An inflow pipe connected to an upper portion or a lower portion, and a bottomed cylindrical header having an enlarged diameter; an outflow pipe connected to both sides of the header; A flow divider, comprising: a flow dividing plate that hangs down from an upper inner wall of the header and changes a ratio of a flow divided into the outflow pipe.