JPS63116057A - Gas-liquid contactor for non-azeotropic mixed refrigerant - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a gas-liquid contactor for varying the concentration of a non-azeotropic refrigerant mixture circulating within a cycle.

An example of a refrigeration cycle device using a conventional non-azeotropic mixed refrigerant is shown in the second example.
FIG. 3 shows the structure of a gas-liquid contactor for changing the concentration of refrigerant.

In Fig. 2, 1 is a compressor, 2 is a condenser, 3 is a first throttle device, 4 is a second throttle device, 5 is an evaporator, 6 is a gas-liquid contactor, 7 is a cooler, and 8 is a It is a reservoir.

Further, in FIG. 3, 9 is a container, 10 is a connecting pipe with the upstream side of the refrigeration cycle, 11 is a connecting pipe 1.12 with the downstream side,
13 is an upper and lower filler holder; 14 is a filler; 15
16 is a gas outlet pipe, and 16 is a liquid return pipe from the reservoir.

The operation will be described below.

The mixed refrigerant discharged from the compressor 1 circulates in the direction of the arrow in FIG. 2 and returns to the compressor 1. At this time, the refrigerant condensed in the condenser 2 expands in the first throttle device 3 and generates some steam, which passes through the upstream connecting pipe 10 and enters the gas-liquid contactor 6 into the container 9. The gas rises through the gap between the filling material 14 and enters the cooler 7 through the gas outflow w15, where it is cooled and liquefied into the reservoir 8.
Go inside.

Further, a part of the liquid refrigerant from the reservoir 8 is returned to the gas-liquid contactor 6 again through the liquid return pipe 16, descends through the gap between the fillers 14, and comes into gas-liquid contact with the steam rising on the way.
The circulating refrigerant concentration changes due to heat exchange and mass transfer.

The refrigerant whose concentration has changed passes through the downstream connecting pipe 11 and enters the second throttling device 4, where the pressure is further reduced, and the refrigerant enters the evaporator 5.

By configuring the above cycle, the concentration circulating within the cycle is varied, and the range of concentration variation is greatly influenced by the performance of the gas-liquid contactor 6.

In other words, increasing the contact area between refrigerant vapor and liquid refrigerant to improve contact will promote heat exchange and mass exchange, widening the range of concentration variation, so it is necessary to create a structure that can expand the gas-liquid contact area as much as possible. .

Problems to be Solved by the Invention However, in the structure of the gas-liquid contactor 6 of this conventional example, the liquid return pipe 16 from the reservoir 8 is not located at the center of the container 9, so that a biased flow occurs in the liquid in the filling material. However, there is a problem in that gas-liquid contact is not carried out over the entire area of the filler, reducing the gas-liquid contact area and reducing the range of concentration variation. The objective is to greatly vary the refrigerant circulation concentration.

Means to solve problems In order to solve the above problems, the present invention provides a non-azeotropic solution.

In a gas-liquid contactor placed in a refrigeration cycle device containing mixed refrigerant, a connecting pipe with the upstream side of the refrigeration cycle and a connecting pipe with the downstream side are provided at the bottom of the contactor container, and many holes are provided above the connecting pipe. A lower filler holder is provided, and a refrigerant gas outlet pipe and a refrigerant liquid return pipe are provided in the upper part of the container, and an upper filler holder having many holes is provided below the container, and both the upper and lower fillers are provided with a lower filler holder. A filling material is filled between the holders, and the refrigerant liquid return pipe is configured such that its opening faces downward at the center of the container.

Effect: By adopting such a configuration, uneven flow of the refrigerant in the filler can be prevented, and heat exchange and mass exchange between gas and liquid can be promoted.

EXAMPLE Hereinafter, a gas-liquid contactor according to an example of the present invention is shown in FIG. 1, and a configuration applied to a refrigeration cycle device is shown in FIG. 2 and will be described. In the container 2o of the gas-liquid contactor 6 in FIG.
21 is a connecting pipe with the upstream side of the refrigeration cycle, 22 is a connecting pipe with the downstream side, and 23 and 24 are upper and lower filler holders having a large number of through holes. A filler 25 is filled between the filler holders 23 and 24 on both the upper and lower sides.

26 is a gas outflow pipe, and 27 is a liquid return pipe from the reservoir, which penetrates from the upper side of the container 20, its tip curved downward, and opens at the bottom approximately on the axis of the container 20. .

The mode of operation of a refrigeration cycle device having such a gas-liquid contactor will be explained below.

The refrigerant condensed in the condenser 2 of the refrigeration cycle device shown in FIG. enter. The gas then rises through the gap between the filling material 25 in the container 20, passes through the gas outlet pipe 26, enters the cooler 7, is cooled and liquefied, and enters the reservoir 8.

Further, a part of the liquid refrigerant from the reservoir 8 is returned to the gas-liquid contactor 6 through the liquid return pipe 27, descends through the gap between the fillers 25, and comes into gas-liquid contact with the steam rising on the way. , heat exchange, and mass transfer to change the circulating refrigerant concentration.

The refrigerant whose concentration has changed passes through the downstream connecting pipe 22 and enters the second throttling device 4, where the pressure is further reduced, and the refrigerant enters the evaporator 5.

Here, as shown in FIG. 1, the liquid return pipe 27 from the reservoir 8 is
By providing the contactor container 20 facing downward at the center of the contactor container 20, it is possible to prevent the return liquid from drifting in the filling material 25, allowing gas-liquid contact throughout the filling material, and expanding the gas-liquid contact area.

Therefore, heat exchange and mass exchange between gas and liquid can be further promoted, the performance of the filler can be maximized, and the refrigerant concentration can be varied over a wide range.

Effects of the Invention By using the gas-liquid contactor for non-azeotropic mixed refrigerants as in the present invention, uneven flow of the return liquid in the filling material can be prevented, so the gas-liquid contact area can be expanded and the refrigerant concentration can be varied over a wide range. Can be changed.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a gas-liquid contactor showing an embodiment of the present invention. 6... Gas-liquid contactor, 20... Container, 2
3... Lower filler holder, 24... Upper filler holder, 25... Filler, 26...
...Gas outflow pipe, 27...Liquid return pipe. Name of agent: Patent attorney Toshio Nakao and one other person? 0
---Breath 21-m--Non-compliance with Satoshi 11-22--Ichigo 7-) Hi's I meeting 25-m-Filling material 26--Case zu L 1 1-11 Compression Scary machine 2-11 Rin J Shonen 3-1-Ne1 no Ku 1) Toshin 4-11 Fude 42 no Squeezing spring 3'' 6--Suichi also Harudo-11 vs. Rensoichi Figure 3

Claims (1)

[Claims] A connecting pipe with the upstream side of the refrigeration cycle and a connecting pipe with the downstream side of the refrigeration cycle are provided in the lower part of the container, a lower filler holder having many holes is provided above the connecting pipe, and a refrigerant gas outflow pipe and a refrigerant gas outlet pipe are provided in the upper part of the container. A refrigerant liquid return pipe is provided, an upper filler holder having many holes is provided below the refrigerant liquid return pipe, a filling material is filled between both the upper and lower filler holders, and the shape of the refrigerant liquid return pipe is A gas-liquid contactor for non-azeotropic mixed refrigerants arranged so that the opening faces downward in the center of the container.