KR200143514Y1 - Absorptive refrigerator - Google Patents

Abstract

The present invention relates to an absorption type air conditioner having a cooling and heating function as well as a cold / hot water supply function using lithium bromide aqueous solution, and the like. 4) a refrigerant storage tank 20 for introducing and storing contaminated liquefied refrigerant inside, a heating unit 22 for heating and evaporating the refrigerant in the refrigerant storage tank 20, and a refrigerant vapor in the refrigerant storage tank 20 under reduced pressure. And a pressure reducing valve 30 to be supplied into the evaporator 4 to maintain the purity of the refrigerant at a constant level and to improve the cooling performance. The refrigerant is heated and evaporated by using a high temperature concentrated solution supplied to the absorber. By pre-cooling the agricultural solution to increase the absorption efficiency can also significantly improve the heating performance.

Description

Absorption air conditioner

1 is a schematic view showing the overall configuration of a general absorption type air conditioner.

Figure 2 is a schematic diagram showing the overall configuration of the absorption type air conditioner according to the present invention.

3 is an enlarged view illustrating main parts of the present invention.

* Explanation of symbols for main parts of the drawings

1: Generator 4: Evaporator

20: refrigerant storage tank 22: heating unit

24: overflow pipe 26a: first valve

26b: second valve 28: supply pipe

30: pressure reducing valve

The present invention relates to an absorption type air conditioner having a cooling and heating function as well as a cooling / hot water supply function using a lithium bromide aqueous solution. In particular, the liquid refrigerant containing the solution is separated in the evaporator to maintain the purity of the refrigerant and at the same time, the refrigerant separated by The present invention relates to an absorption type air conditioner capable of improving heating and cooling performance by evaporating with a concentrated solution.

Generally, as shown in FIG. 1, the absorption type air conditioner generates a refrigerant vapor and a concentrated solution in a rare solution in which the refrigerant is absorbed when the generator 1 burns a gas or the like in the burner 1a and heats it. The refrigerant vapor generated in 1) is condensed into liquefied refrigerant in the condenser (2), and then reduced to a predetermined pressure in the decompression device (3) and sent to the evaporator (4), and the refrigerant introduced into the evaporator (4) is a refrigerant. Cooling and cold water are generated by cooling the cold water pipe 6 located inside the evaporator while circulating according to the operation of the circulation pump 5, and the refrigerant evaporated in the evaporator 4 is a rare solution and a liquefied refrigerant. It is introduced into the absorber 8 through the separating plate 7 to prevent mixing.

On the other hand, the high temperature concentrated solution in which the content of the refrigerant is reduced by releasing the refrigerant vapor from the generator (1) is heat-exchanged with the rare solution in the heat exchanger (9), the temperature is lowered, and is supplied into the absorber (8). (8) The concentrated solution supplied into the solution is repeatedly circulated according to the operation of the solution circulation pump 10 and at the same time absorbs the refrigerant evaporated from the evaporator 4 to form a rare solution, in which a large amount of heat of absorption is generated. This heat of absorption heats the water circulated into the cooling water pipe 11 installed in the absorber 8 to generate heating and hot water.

Then, the rare solution absorbing the refrigerant evaporated in the evaporator (4) is moved in accordance with the operation of the solution supply pump 12 is heat-exchanged with the agricultural liquid in the heat exchanger (9) and then sent to the generator (1) The circulation operation is repeatedly performed to enable cooling and heating and supply of cold and hot water.

However, in the conventional absorption type air conditioner configured as described above, as the solution in the absorber 8 flows into the evaporator 4 through the separator plate 7, it is difficult to maintain the purity of the refrigerant, and when a small amount of the solution is mixed with the refrigerant, the cooling performance is reduced. Not only is it remarkably lowered, but a proper amount of refrigerant can be obtained only by increasing the heating temperature of the generator, such that energy loss is enormous.

The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to keep the purity of the refrigerant at an appropriate level by separately storing and evaporating the refrigerant contaminated with the solution, etc. to supply to the evaporator again. It is to provide an absorption type air conditioner that can improve cooling and heating performance and at the same time obtain stable heating and cooling output.

Absorption air conditioner according to the present invention made to achieve this purpose is an absorption air conditioner equipped with a generator, a condenser, an evaporator, a heat exchanger, and an absorber for heating at least by the heat of combustion, the storage of the condensed liquefied refrigerant in the evaporator by inflow A refrigerant storage tank, a heating unit for heating and evaporating the refrigerant in the refrigerant storage tank, and a pressure reducing valve for supplying pressure into the evaporator by reducing the refrigerant vapor in the refrigerant storage tank to maintain the purity of the refrigerant at a predetermined level and at the same time cooling performance. As the refrigerant is heated and evaporated with a high temperature concentrated solution supplied to the absorber, the concentrated solution is pre-cooled to increase the absorption efficiency, thereby remarkably improving the heating performance.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to FIGS. 2 and 3.

In the drawings, the same components as those in the related art are denoted by the same name and the same reference numerals, and detailed description thereof will be omitted.

In the drawing, reference numeral 20 denotes a refrigerant purifier tank in which the contaminated refrigerant supplied from the evaporator 4 is stored, and a high temperature agricultural liquid is supplied from the generator 1 into the refrigerant purifier tank 20 to store the internally. The heating part 22 which heats and evaporates the liquefied refrigerant which has been formed is formed, and the concentrated solution which heated the refrigerant in the refrigerant purifying tank 20 is configured to be sent to the absorber 8.

One side of the refrigerant storage tank 20 is connected to an overflow pipe 24 through which a refrigerant is supplied when the level of the liquefied refrigerant stored in the evaporator 4 is greater than or equal to a predetermined level, and the overflow pipe 24 is liquefied. The 1st valve 26a which controls the supply amount of refrigerant | coolant is provided.

On the other hand, the upper side of the refrigerant storage tank 20 is connected to the evaporator tube 28 for supplying the vaporized refrigerant vapor into the evaporator 4 is heated by the high temperature concentrated solution sent from the generator (1), The evaporator tube 28 is provided with a pressure reducing valve 30 for reducing the evaporated refrigerant vapor and a second valve 26b for controlling the supply amount of the refrigerant vapor.

In the figure, reference numeral 32 denotes a drain cock for discharging the contaminated refrigerant stored in the refrigerant storage tank 20 when it is stored above a predetermined amount.

Next will be described the action and effect on the absorption type air conditioner according to the present invention configured as described above.

First, as shown in FIG. 2, the refrigerant vapor generated in the generator 1 according to the heating of the burner 1a is condensed with liquefied refrigerant while being radiated in the condenser 2, and then the predetermined pressure is reduced in the decompression device 3. It is reduced in pressure and introduced into the evaporator (4).

Subsequently, the liquefied refrigerant introduced into the evaporator 4 is evaporated in the evaporator 4 to cool the cold water pipe 6 as shown in FIGS. The liquefied refrigerant repeatedly performs a circulating action injected to the upper side of the evaporator 4 according to the operation of the refrigerant circulation pump 5.

When the amount of storage of the liquefied refrigerant stored in the evaporator 4 is greater than or equal to a predetermined amount, the refrigerant flows into the refrigerant storage tank 20 through the overflow pipe 24, and the solution flowed back from the absorber 8 is mixed. As the contaminated liquefied refrigerant is heated in the heating unit 22 by the agricultural solution heated in the generator (1), only the pure refrigerant is evaporated to maintain a constant refrigerant purity in the evaporator (4), The refrigerant vapor generated in the refrigerant storage tank 20 flows back into the evaporator 4 through the supply pipe 28 to continuously perform evaporation.

At this time, the refrigerant vapor generated in the refrigerant reservoir 20 is sufficiently reduced while passing through the pressure reducing valve 30 installed in the supply pipe 28 and then flows into the evaporator 4 to evaporate in the evaporator 4. The operation can be made more smoothly to further improve the cooling performance, and the high temperature concentrated solution heated in the generator 1 is also heated in contact with the liquefied refrigerant in the heating unit 22 in the refrigerant storage tank 20. As a result, the temperature becomes low and flows into the absorber 8, thereby increasing the absorption efficiency in the absorber 8, thereby remarkably improving the heating performance.

On the other hand, the supply amount of the refrigerant flowing into the refrigerant storage tank 20 from the evaporator 4 is enabled by the control of the first valve 26a, the refrigerant vapor supplied into the evaporator 4 in the refrigerant storage tank 20. The amount is enabled by the control of the second valve 26b, the pollutant refrigerant stored in the refrigerant storage tank 20 is discharged to the outside according to the opening and closing operation of the drain cock (32).

As described above, according to the absorption type air conditioner according to the present invention, after storing the contaminated refrigerant in which the solution and the like are sucked in the evaporator into a separate refrigerant storage tank, only the pure refrigerant is evaporated by the hot concentrated solution heated in the generator, and then again in the evaporator. By maintaining the purity of the refrigerant to a certain level by evaporating at the same time to improve the cooling performance, by increasing the absorption efficiency by pre-cooling the agricultural solution as the refrigerant is heated and evaporated with a high temperature agricultural solution supplied to the absorber It has various excellent effects, such as a significant improvement in heating performance.

Claims (2)

An absorbent air conditioner including an evaporator to which liquefied refrigerant is introduced and evaporated, an absorber to which a concentrated solution is supplied, and a separation plate configured to move the refrigerant gas between the evaporator and the absorber as well as the liquefied refrigerant and the rare solution not mixed. When the liquefied refrigerant stored in the evaporator is above a certain flow rate, the refrigerant storage tank connected to the overflow pipe so as to be introduced, the heating unit is installed to pass through the agricultural solution stored in the refrigerant reservoir, and when the liquefied refrigerant is evaporated And a supply pipe installed to connect the evaporator and the refrigerant reservoir to return it to the upper portion of the evaporator. The absorption type air conditioner according to claim 1, further comprising a pressure reducing valve installed to adjust the pressure of the refrigerant passing through the supply pipe to facilitate evaporation.