JPS62245058A - Flow diverter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flow divider for a refrigeration cycle used in refrigerators, air conditioners, etc.

BACKGROUND OF THE INVENTION Conventionally, this type of refrigeration cycle has a compressor 1, as shown in FIG. Condenser 2. Receiver 3. Aperture with the same resistance 4. It is constructed by connecting evaporators 6 in an annular manner through piping. and,
In order to reduce the pressure loss on the refrigerant side of the evaporator 6 as much as possible, a plurality of refrigerant circuits are provided, and accordingly, a plurality of throttles 4 having the same resistance are provided in accordance with the number of refrigerant circuits. In such a configuration, air flows in the evaporator 6 in the direction of the arrow 6 and exchanges heat with the refrigerant.

Problems to be Solved by the Invention However, with such a configuration, even if the resistance of the throttle 4 is changed, in a normal refrigeration cycle, the flow becomes a critical flow and the flow rate cannot be changed. Furthermore, in the evaporator 5, an equal flow rate of refrigerant is applied to the part of the evaporator 5 where fresh air that is not subjected to heat exchange enters, that is, the windward side heat transfer tube, and the part where heat exchanged air enters, that is, the leeward side heat transfer tube, by the aperture 4 having the same resistance. Inflow. Therefore, on the windward side where the heat flux is large, the refrigerant evaporates quickly and the gas region becomes long, resulting in a problem that heat transfer performance deteriorates.

Means for Solving the Problems The present invention solves the problems as described above. In other words, in order to flow a refrigerant flow rate in accordance with the heat flux of each refrigerant circuit to the multiple refrigerant circuits of the evaporator, a plurality of refrigerant circuits, one end of which is open to the gas side and the other end of which is connected to the evaporator, are installed in a container that separates gas and liquid. A flow divider is attached to a refrigeration cycle, in which a plurality of tubes are provided, and holes formed in the tube wall on the liquid side of the plurality of tubes are arranged at different heights from the bottom of the container.

Effect: With such technical means, the flow rate of refrigerant to the evaporator can be controlled according to the head difference between the liquid level in the container and the hole, so that the refrigerant can be efficiently evaporated in each refrigerant circuit of the evaporator. As a result, heat exchange performance can be significantly improved.

Example An embodiment of the present invention will be described below with reference to FIG.

Compressor7. Condenser8. Throttle 91 Divider 10° Evaporator 11
are connected in an annular manner by a refrigerant pipe 12 to form a refrigeration cycle. In order to minimize the pressure loss of the refrigerant, the evaporator 11 has three refrigerant circuits 13, 14 .
I set it to 15.

In addition, the flow divider 1o is a container that separates the gas 16 and the liquid 17, and in this container there are three pipes 18, 19, 20, one end of which is on the gas 16 side, depending on the number of refrigerant circuits of the evaporator 11. The other end is open to each refrigerant circuit 13, 14 .
15, and each of these pipes 18,
19 and 20 have holes 21 of the same diameter in the tube walls on the liquid 17 side.
, 22.23, and the total height from the bottom of container 1o is 2.
The height increases in the order of 1.22°23. In addition, 24 is tube 1
This is a baffle plate provided at the gas side open ends of 8°19 and 20 to prevent the refrigerant liquid that has passed through the throttle 9 from flowing into the gas side open ends.

Further, the evaporator 11 is provided with an arrow 2 by a blower (not shown).
Air flows in five directions.

Next, the operation of the configuration of this embodiment will be explained. In the refrigerant circuit of the evaporator 11, the heat flux decreases in order from the windward side, that is, in the order of 13, 14, and 15.

On the other hand, in the flow divider 10, since the head difference is larger in the order of pipes 20, 19, 18, the refrigerant flow rate is also larger in the order of pipes 20, 19, 18.
The number increases in the order of 8.

Therefore, the refrigerant flow rate is large in the refrigerant circuit 13 with a large heat flux, and the refrigerant flow rate is low in the refrigerant circuit 16 with a small heat flux, that is, the refrigerant flow rate can be optimally adjusted according to the heat flux.

The latent heat of vaporization can be effectively absorbed in each refrigerant circuit 13, 14, 15, and the heat transfer performance of the evaporator 11 is significantly improved.

In addition, the means to change the refrigerant flow rate according to the heat flux in this way is to make the heights of the holes 21° and 22.23 provided in the pipe IEl, 19.20 the same from the bottom of the container and have different hole diameters, or to make the holes with the same hole diameter. A person skilled in the art can easily think that the number of holes may be made different.

Effects of the Invention As described above, in the flow divider of the present invention, a container for separating gas and liquid is provided with a plurality of tubes, one end of which is open to the gas side and the other end of which is connected to an evaporator. Since the holes in the pipe wall on the liquid side are arranged at different heights from the bottom of the container, the refrigerant flow rate can be controlled according to the heat flux of each refrigerant circuit in the evaporator, which improves the transmission of the evaporator. Thermal performance is significantly improved.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a heat pump device using a flow divider according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a heat pump device using a conventional flow divider. 10... Flow divider, 18-20... Tube,
21-23... Holes.

Claims (1)

[Claims] A container for separating gas and liquid is provided with a plurality of tubes with one end open to the gas side and the other end connected to an evaporator, and holes provided in the tube wall on the liquid side of the plurality of tubes are inserted from the bottom of the container. Flow dividers arranged at different heights.