KR200323227Y1 - A absorption solution refining filter unified cool-hot water supply implement - Google Patents

Abstract

Absorption solution purification filter integrated cold and hot water unit to eliminate the problem of solution contamination caused by vacuum leakage due to long time operation by integrating the filter and the cold and hot water of the absorbent solution, the absorber in the absorber (1) is a solution pump ( 2) and the filtration vessel (9) having a pipe (11) flowing through the vacuum valve (7) has a diaphragm (19) with a diaphragm (19) on top of the inner side formed of a microporous membrane having an average pore diameter of 0.1 micrometer The filter has an opening 18 above the diaphragm 19 and a plurality of hermetic arrays are formed, and the back washing pipe 15 for introducing nitrogen gas or tap water having a vacuum valve 8 above the filter container 9 and A discharge pipe (17) composed of a discharge pipe (16) having a vacuum valve (12) sent to the absorber and having a vacuum valve (10) below the filter container (9) for backwashing debris such as iron and copper oxides. Consisting of .

Description

Absorption solution refining filter unified cool-hot water supply implement

The present invention integrates the refining filter of the absorbing solution and the cold and hot water in the cold and hot water machine using lithium bromide as the absorbing liquid to eliminate the solution contamination problem caused by vacuum leakage due to long time operation. It is about a water heater.

Absorption cold and hot water heaters have been widely distributed in Korea for 1,500 years.

Therefore, in order to eliminate this problem, it can be said that a device that can purify the solution itself in the cold and hot water device is more necessary than ever.

Looking at the structure of the absorption liquid filter filter integrated cold, water heaters are divided into a series flow, reverse flow and series, parallel combined flow method according to the flow of the solution, and the serial flow and parallel flow method is mainly used in Korea.

1 shows an absorption cold and hot water heater of a series flow method to which the present invention is applied, and as shown, the dilute solution from the absorber 1 is connected to a low temperature heat exchanger 3 and a high temperature heat exchanger by a solution pump 2. 4) to enter the high temperature regenerator (5). Here, the diluted solution becomes a medium solution by increasing the concentration after generating the refrigerant, and heat-exchanges with the diluted solution of low temperature in the high temperature heat exchanger (4). Thereafter, the low temperature regenerator 6 is heated again by the high temperature refrigerant vapor generated in the high temperature regenerator 5 to generate the refrigerant, and then to a deeper solution state. The absorber 1 passes through the low temperature heat exchanger 3. Return to

2 shows a parallel flow type absorption cold and hot water heater to which the present invention is applied, and as shown, a dilute solution from the absorber 1 is passed through a low temperature heat exchanger 3 by a solution pump 2, It is sent to the high temperature regenerator (5) through the high temperature heat exchanger (4) and another part of the solution is introduced directly to the low temperature regenerator (6) to generate a refrigerant, respectively, and the thick solution and the intermediate solution into a thick solution is a high temperature heat exchanger ( 4), and the intermediate solution in the low temperature regenerator (6) comes directly to the low temperature heat exchanger (3), heat exchanges with the dilute solution, and then returns to the absorber (1).

In the above flow, the lithium bromide (LiBr) solution used as the absorbent exists in the liquid state, and the refrigerant (H 2 O) coexists in the absorption type cold and hot water device in the liquid and gaseous state. If the vapor pressure in the absorbent liquid is lower than the vapor pressure in the gaseous state, absorption occurs at the interface. Heat generated in the absorption phenomenon forms a temperature gradient, causing heat transfer.

Lithium bromide (LiBr) solution used as absorbent liquid has chemical properties similar to that of saline solution, so it is very sensitive to metal corrosion and management is very important.

Iron and copper oxides are generated as the cold and hot water come into contact with iron and copper materials in a circulation path constituting the device as the absorbent liquid and the refrigerant circulate in a vacuum state.

Failure to remove these oxides will lead to higher concentrations, which can lead to problems such as scale formation in the circulation paths and eastern phenomena in the pumps.

For proper operation of cold and water heaters, it is necessary to replace absorbents or purify chemicals every few years. At this time, to extract the liquid from the inside of the machine under vacuum, the absorbent liquid is drawn out above the atmospheric pressure using nitrogen gas temporarily. It has to go through many processes such as recovery, transportation, chemical transfer and vacuum maintenance.

In addition, it takes many days to restart the cold and hot water heaters, and a lot of labor and costs are excessively spent.

If the absorbent solution is not replaced or the chemical refining is not performed, the efficiency of the machine may be lowered, resulting in an increase in energy cost and shortening of the machine life.

Therefore, the present invention solves the above-mentioned problems by allowing the operation of the absorption solution refining device to be attached at the time of manufacturing the cold and hot water heaters, while maintaining the airtight state from the beginning of the trial run. .

Specific means of the present invention for achieving the above object, the liquid in the absorber through the solution pump (2) and the vacuum valve (7) some of the solution enters the filter and has a special material of the external pressure type The absorbent solution filtered while passing through the hollow fiber membrane enters the absorber through the vacuum valve 12, and also has a pipe for recovering the backwashed solution from the backwashing nitrogen gas and the water backwashing tube. It is done by doing so.

1 is a configuration of the absorption type cold, water heater of the series flow method to which the present invention is applied.

Figure 2 is an aqueous diagram of the absorption type cold, water heater of the parallel flow method to which the present invention is applied.

Figure 3 is a block diagram of an absorption solution stabilizing filter applied to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: absorber

2: solution pump

9: filtration vessel

8,10,12: vacuum valve

16 discharge pipe

17: discharge piping

18: opening

19: diaphragm

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a configuration diagram of the absorbent solution static filter applied to the present invention, an example in which the absorbent solution static filter of FIG. 3 is illustrated in FIGS. 1 and 2.

1 and 2, the present invention provides an inlet tube through which the solution in the absorber 1 is introduced through the solution pump 2 and the vacuum valve 7 as shown in FIG. The hollow fiber-type polymer filter 20 having the diaphragm 19 at the top and the microporous membrane having an average pore diameter of 0.1 micrometer is formed inside the filtration container 9 having the opening 11. And a plurality of hermetic arrays are formed, and a discharge tube 16 which is sent to the absorber 1 is provided with a back washing pipe 15 for the inflow of nitrogen gas and tap water for washing in the upper part of the filtration vessel 9. At the same time, the lower part of the filtration vessel 9 has a discharge pipe 17 for discharging the filtered debris, and the discharge pipe 17 has a vacuum valve 10 for adjusting the discharge amount.

According to the operating state of the present invention configured as described above, traces of iron and copper ions and oxides generated by reacting a small amount of oxygen introduced during operation of the machine with lithium bromide solution and corrosion inhibitor are gradually accumulated or scaled in the cold / hot water apparatus. As it is formed, the power generation of the machine is degraded or progressed to failure.

At this time, the contaminated absorbent liquid is introduced into the inlet pipe 11 through the vacuum valve 7 to filter iron and copper oxides from the polymer filter 20. Only the absorbent liquid purified from the polymer filter 20 flows through the upper opening 18 from the inside of the hollow fiber and is sent to the upper side of the filtration vessel 9 to the absorber through the discharge pipe 16 having the vacuum valve 12. As it is sent, it is used as a purified solution.

At this time, as the hollow fiber filter 20 is used, wastes such as iron and copper oxide are accumulated in the outside of the hollow fiber, so that the inlet pipe 11 and the discharge pipe 16 are periodically blocked in order to remove them. 15) is supplied through the opening 18 of the hollow fiber-type polymer filter 20 through the upper portion of the partition 19 through the upper portion of the filtration vessel (9) by supplying nitrogen gas or tap water through the filter 20 is accumulated outside the filter 20 Debris, such as iron and copper oxide, is separated and discharged through the discharge pipe 17 to be completely separated outside the machine. In this process, no air should be introduced during operation.

Therefore, the connection between the pipes (11, 15, 16, 17) and the vacuum valves (7, 8, 10, 12) through which the absorbent liquid is circulated must be completely sealed by welding, and the flange (21) of the filter filtration vessel (9) is completely closed. It is preferable to use a gasket 22 that can be sealed and can withstand high temperatures.

As described above, the present invention is conventionally made by directly attaching the filtration and purification device to the vacuum purification and refining process. It has been found that it can prevent the contamination of absorbent solution, can operate for a long time, save more than 13% of energy, and extend the life of the machine.

Claims (1)

In the installation of the filtration and purification device for the absorbing solution in the absorption type cold and hot water, the filtration vessel (9) having the pipe (11) through which the absorbent liquid in the absorber (1) flows through the solution pump (2) and the vacuum valve (7). Hollow fiber type external pressure filter having a diaphragm 19 having an average pore diameter of 0.1 micrometer and having an opening 18 above the diaphragm 19 has a plurality of hermetic arrays and a plurality of filter vessels. The upper part is composed of a backwash pipe 15 for introducing nitrogen gas or tap water having a vacuum valve 8 and a discharge pipe 16 having a vacuum valve 12 which is sent to the absorber. The cold and hot water absorber integrated filter, characterized in that the exhaust pipe 17 for backwashing the residue of iron and copper oxide having a vacuum valve (10).