JP3927823B2 - Refrigerant flow divider for refrigeration cycle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerant flow divider for a refrigeration cycle, and more particularly, to a refrigerant flow divider for a refrigeration cycle in which a refrigerant enclosure tube is provided in a flow divider body that divides the refrigerant.
[0002]
[Prior art]
As shown in FIG. 4, the refrigeration cycle 10 generally used in an air conditioner includes a compressor 11, a four-way valve 12, an indoor heat exchanger 13, an expansion valve 14, an outdoor heat exchanger 15, and a gas-liquid separator 16 as refrigerant. It is formed by connecting in a loop with piping, and the refrigerant is circulated in the loop to cool and heat the room.
[0003]
In addition, the outdoor heat exchanger 15 has a plurality of parallel circuits, and the flow paths are branched into a plurality of parallel circuits. In the refrigerant inlet portion, in order to allow the refrigerant to flow through the branched refrigerant tubes 15a and 15b, respectively, the portion A in FIG. And the refrigerant | coolant divider | distributor is provided in the position as shown to B part, The improvement of the heat exchange rate of the outdoor heat exchanger 15 is aimed at by branching and flowing a refrigerant | coolant in parallel. In FIG. 4, solid line arrows indicate the flow of the refrigerant during the cooling operation, and dotted line arrows indicate the flow of the refrigerant during the heating operation.
[0004]
As shown in FIG. 5, the conventional refrigerant flow divider 21 is connected to a flow divider main body 22 that diverts the refrigerant, and a refrigerant pipe 23 that has one end connected to one side of the main body 22 and connected to the compressor side. One refrigerant inflow pipe 24 and two refrigerants whose one end is connected to the other side of the flow divider body 22 so as to face the inflow pipe 24 and the other end is branched into a parallel circuit of the outdoor heat exchanger 25 The two refrigerant outlet pipes 27a and 27b are connected to the pipes 26 and 26, respectively. Further, a T-shaped pipe joint 28 is connected to the refrigerant outflow pipe 27a, and a refrigerant sealing pipe 29 for sealing the refrigerant is connected to one connection port thereof. Since this refrigerant sealed pipe 29 is connected to the refrigerant outflow pipe 27a using a T-shaped pipe joint 28, the number of parts increases, and the man-hours for brazing, piping processing, etc. increase, producing an air conditioner. The cost was high.
[0005]
[Problems to be solved by the invention]
Therefore, there has been a demand for a refrigerant flow divider for a refrigeration cycle that can reduce the number of parts, reduce the number of steps such as brazing and piping, and manufacture an air conditioner at low cost.
[0006]
The present invention has been made in consideration of the above-described circumstances, and can reduce the number of parts, reduce the number of steps such as brazing and piping processing, improve reliability, and can manufacture an air conditioner at low cost. An object of the present invention is to provide a refrigerant flow divider.
[0007]
[Means for Solving the Problems]
To achieve the above object, according to one aspect of the present invention, a shunt body with a hollow sealed structure for shunting a refrigerant, one end of the shunt body being connected to one side, and the other end connected to the compressor side. One refrigerant inflow pipe connected to the refrigerant pipe to be connected, one end connected to the other side of the flow divider body so as to face the refrigerant inflow pipe, and the other end of the outdoor heat exchanger of the refrigeration cycle A plurality of refrigerant outlet pipes respectively connected to the plurality of refrigerant pipes branched into the parallel circuit, and a refrigerant sealing pipe for refrigerant sealing whose one end is connected to the refrigerant outlet pipe connecting side of the flow divider body. A refrigeration cycle refrigerant flow divider is provided. Thereby, the number of parts can be reduced, the number of steps such as brazing and piping processing can be reduced, the reliability is improved, and an inexpensive air conditioner can be realized.
[0008]
In a preferred example, the refrigerant sealing tube is provided in a vertical plane including a horizontal center line of the refrigerant inflow tube, and the refrigerant outflow tube is positioned so as to be symmetric with respect to the vertical plane. Provided. Thereby, a refrigerant can be made to flow evenly to a plurality of refrigerant pipes via a plurality of refrigerant outflow pipes, and the heat exchange rate of the outdoor heat exchanger can be improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments according to the present invention will be described below with reference to the accompanying drawings.
[0010]
FIG. 1 is a perspective view showing a state in which a refrigerant flow divider of a refrigeration cycle according to the present invention is attached to an outdoor heat exchanger.
[0011]
As shown in FIG. 1, the refrigerant flow divider 1 of the refrigeration cycle according to the present invention is used by being attached to a position as shown in part A in FIG. 4 in the refrigeration cycle of the general air conditioner shown in FIG. .
[0012]
The refrigerant flow divider 1 of this refrigeration cycle is made of a metal, for example, copper, which has a cylindrical closed structure, and one end connected to the lower end surface 2a of the flow divider main body 2 and the other end on the compressor side. One refrigerant inflow pipe 4 made of, for example, copper connected to the refrigerant pipe 3 connected to the pipe, and one end connected to the upper surface portion 2b of the flow divider body 2 so as to face the refrigerant inflow pipe 4 A plurality of, for example, two refrigerant pipes 6, 6 connected to a plurality of, for example, two refrigerant pipes 6, 6 branched into a parallel circuit of the outer heat exchanger 5, and an upper surface portion 2 b of the flow divider main body 2. That is, it has the refrigerant | coolant enclosure pipe | tube 8 for refrigerant | coolant enclosure which one end was connected to the refrigerant | coolant outflow pipe | tube connection side.
[0013]
As shown in FIG. 2, the refrigerant enclosure tube 8 is attached via a refrigerant enclosure tube attachment port 8a so as to be located in a vertical plane s including the horizontal center line c of the refrigerant inflow tube 4. The refrigerant outflow pipes 7 and 7 are positioned so as to be symmetric with respect to the vertical plane s, and are attached to the upper surface portion 2b of the flow distributor main body 2 through the refrigerant outflow pipe attachment ports 7a and 7a. As a result, the refrigerant can flow evenly through the two refrigerant outflow pipes 7, 7, and further, the refrigerant can flow through the two refrigerant outflow pipes 7, 7 evenly into the two refrigerant outflow pipes 6, 6. Therefore, the heat exchange rate of the outdoor heat exchanger 5 can be improved.
[0014]
In the present embodiment shown in FIG. 2, the refrigerant enclosure tube 8 is attached to the refrigerant inflow tube 4 side of the upper surface portion 2 b of the flow distributor body 2, but as shown in FIG. The same effect can be expected even when the pipe 8A is attached to the anti-refrigerant inflow pipe 4A side of the upper surface portion 2Ab of the flow divider main body 2A. In addition, a refrigerant shunt that is not integrally provided with a refrigerant sealing tube is used at a position as shown by a portion B in FIG.
[0015]
Next, the manufacturing method of the refrigerant | coolant flow splitter of the refrigerating cycle concerning this invention is demonstrated.
[0016]
As shown in FIG. 1, a flow divider main body 2 to which a refrigerant inflow pipe 4 is connected in advance is prepared, and the refrigerant inflow pipe 4 is brazed to a refrigerant pipe 3 communicating with a four-way valve. Insert one end of the refrigerant outflow pipes 7 and 7 connected to the refrigerant pipes 6 and 6 whose other ends are branched into the parallel circuit of the outdoor heat exchanger 5 into the refrigerant outflow pipe attachment ports 7a and 7a provided in 2b. Furthermore, one end of the refrigerant enclosure tube 8 is inserted into the refrigerant enclosure tube attachment port 8a.
[0017]
Thereafter, brazing of the refrigerant outflow pipes 7 and 7 and the refrigerant sealing pipe 8 is simultaneously performed in one brazing step.
[0018]
Since the refrigerant sealing tube 8 is integrally attached to the flow distributor body 2 together with the refrigerant outflow tubes 7 and 7 as described above, the three tubes can be brazed at the same time, and the number of brazing steps and the number of piping steps can be reduced. In addition, a T-shaped joint is not required and the number of parts can be reduced, and an air conditioner can be manufactured at a low cost.
[0019]
【The invention's effect】
According to the refrigerant flow distributor of the refrigeration cycle according to the present invention, the number of parts, the number of processes such as brazing and piping processing can be reduced, the reliability is improved, and the air conditioner can be manufactured at a low cost. A refrigerant shunt can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a refrigerant flow divider of a refrigeration cycle according to the present invention is attached to an outdoor heat exchanger.
FIG. 2 is a plan view of the refrigerant flow divider of the refrigeration cycle according to the present invention.
FIG. 3 is a plan view of a modification of the refrigerant flow divider of the refrigeration cycle according to the present invention.
FIG. 4 is a conceptual diagram of a general refrigeration cycle.
FIG. 5 is a perspective view showing a state in which a refrigerant flow divider of a conventional refrigeration cycle is attached to a heat exchanger.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Refrigeration cycle refrigerant | coolant flow divider 2 Flow divider main body 2a Lower end surface 2b Upper surface part 3 Refrigerant piping 4 Refrigerant inflow pipe 5 Outdoor heat exchanger 6 Refrigerant pipe 7 Refrigerant outflow pipe 7a Refrigerant outflow pipe attachment port 8 Refrigerant enclosure pipe 8a Refrigerant enclosure Pipe fitting port c Center line s Vertical plane

Claims (2)

A shunt main body having a hollow sealed structure for shunting a refrigerant, one refrigerant inflow pipe connected to a refrigerant pipe having one end connected to one side of the flow divider main body and the other end connected to the compression side, and the refrigerant A plurality of refrigerants having one end connected to the other side of the flow divider main body and the other end connected to a plurality of refrigerant tubes branched to a parallel circuit of the outdoor heat exchanger of the refrigeration cycle so as to face the inflow pipe A refrigerant flow divider for a refrigeration cycle, comprising: an outflow pipe; and a refrigerant enclosure pipe for refrigerant enclosure having one end connected to the refrigerant outflow pipe connection side of the flow distributor body. The refrigerant sealing pipe is provided in a vertical plane including a horizontal center line of the refrigerant inflow pipe, and the refrigerant outflow pipe is provided to be symmetrical with respect to the vertical plane. The refrigerant shunt for the refrigeration cycle according to claim 1.

Images