KR200154750Y1 - Absorption type small cooler - Google Patents

Abstract

The present invention relates to an absorption type cooling / heating machine, and a heating source as a gas (GAS), and a miniaturized absorption type cooling and heating to be installed in a small building or a general home.

Absorption chillers basically consist of a condenser, an evaporator and an absorber. In order to reduce the size (volume) of a conventional absorption chiller, these condensers, evaporators and absorbers are formed by overlapping a plurality of small tubes into a spirally wound cylindrical shape. As these pipes are spirally constructed, they have a small radius of curvature, and their freezing capacity can only be 20 to 50 refrigeration tons (RT). It is difficult to manufacture and has limitations in practical use so that it can be used for general household use.

The present invention uses a condenser and an evaporator in a refrigerator using LNG (liquefied natural gas) or LPG (liquefied petroleum gas) as a heating source, and lithium embrittlement (Litbium Bromide: LiBr) as an absorption liquid, and water (H 2 O) as a refrigerant. And absorber cold to reduce the freezing capacity to 1 to 5RT by configuring the absorber in a vertical and horizontal direction with a plurality of straight fin tubes connecting the diffusion chamber and the collection chamber in the case partitioned by the partition wall It is about a heater.

Description

Absorption Compact Air Conditioner

The present invention relates to an absorption type air conditioner and an air conditioner. The heating source is a gas (GAS), and a miniaturized absorption type air conditioner and a heater can be installed in a small building or a general home.

Generally, refrigerators are classified into compression refrigerators, absorption refrigerators, steam jet refrigerators, and thermoelectric refrigerators according to the freezing method. In areas with long or tropical climates, the frequency of use is increasing continuously. Absorption-type freezer among these is a refrigerator using gas absorbency to liquid. In the coexistence state of gas and liquid, gas is absorbed into liquid at low temperature and low pressure, and when it is heated at high pressure, the gas liberated in vapor state undergoes heat exchange. As a refrigeration cycle, a gas-liquid cycle that condenses and expands and absorbs evaporated gas into a liquid is used.

-As the power source is gas or solar heat, the maintenance cost is cheaper and the service life is longer than that of electric freezer.

-One facility can solve cooling and heating together

-Since there is no driving device using electricity, there is almost no noise vibration and trouble

-There are many advantages, such as being able to relieve the burden of power generation adjustment due to the increased use of the freezer in the summer, which has recently increased the acceptance.

However, this absorption type air conditioner (or cold water heater) is still in the early stage of development, and large and large ones are widely distributed, but small and small ones still have technical problems to be solved. There is no situation.

Absorption chillers basically consist of a condenser, an evaporator and an absorber. In order to reduce the size (volume) of a conventional absorption chiller, these condensers, evaporators and absorbers are formed in a spirally wound cylindrical form by overlapping a plurality of small tubes. There is a limit to the small size by constructing the tube in a spiral shape, and its freezing capacity is about 20-50 refrigeration tones (RT) (hereinafter referred to as RT).

On the other hand, in consideration of the advantages of the absorption type refrigerator that does not generate noise and vibration, it is urgently required to be installed indoors even in general homes with an area of about 10 to 45 pyeong. Although it would be sufficient to have a refrigerator of 1 to 5RT scale with cooling capacity of 15,120Kcal / h, due to the structural features as described above, a typical absorption chiller is at least about 60,482Kcal / It is too small to be used for indoor use in general households because it can only be miniaturized to a size of 20RT with a cooling capacity of more than h, and it is not practically used for home use, and a plurality of copper tubes are spirally formed in the condenser, evaporator, and absorber configuration. As it is wound and formed into a cylindrical shape, it is not easy to weld copper pipe and steel plate, When there is practically no reliable corrosion performance, and lower life situation is not the limitations.

For this reason, indoors generally use compressed refrigerators. Compressed refrigerators are powered by electricity and consume a lot of power in order to obtain a predetermined freezing capacity. At the same time, the air temperature is concentrated in a certain period of time, which is a factor of expanding power generation facilities, but it increases the waste of having unnecessary power generation facilities except during the summer season. Compressors and other electrical appliances for the compression of the refrigerant are inevitably installed, which makes it difficult to expect a pleasant environment due to considerable noise.

In addition, the Republic of Korea Utility Model Application No. 92-4108 has been proposed for the purpose of applying the absorption chiller to a small device, but such a refrigeration device is not only available as a cooling and heating device, but also Because of its low freezing capacity, it can be applied only to small appliances, and has a problem that cannot be applied to indoor cooling and heating of general households.

The present invention uses a condenser and an evaporator in a refrigerator using LNG (liquefied natural gas) or LPG (liquefied petroleum gas) as a heating source, and using lithium bromide (LiBr) as an absorbent liquid and water (H 2 O) as a refrigerant. And absorber cold to reduce the freezing capacity to 1 to 5RT by forming a structure of the absorber in a vertical and horizontal direction with a plurality of straight pipe tubes connecting the diffusion chamber and the collection chamber in the case partitioned by the partition wall. It is about a heater.

1 is a partially enlarged overall sectional view showing an embodiment of the present invention.

2 is a perspective view of the main portion of the present invention.

3 is a cross-sectional view taken along the line A-A 'of FIG.

Figure 4 is an overall cross-sectional view showing another embodiment of the present invention

* Explanation of symbols for main parts of the drawings

1: body 2: player

3: gas burner 4: communication

5: nutrient solution tube 7: blocking plate

8: steam transfer pipe 9: agricultural liquid dropping pipe

10: equalization pipe 11: case

12a, 12b, 34: bulkhead 12 ': communication part

13: condensing chamber 14: evaporating chamber

15 Absorption chamber 16 Condenser

18: evaporator 20: absorber

17a, 19a, 21a: diffusion chamber 17b, 19b, 21b: water collecting chamber

17c, 19c, 21c: fin tube 22a: cooling water inlet

22b: cooling water outlet 23: cooling water circulation device

24a: water inlet 24b: water inlet

25: fan coil 26: water pipe

27: refrigerant U tube 28: agricultural liquid rise pipe

29: solution drop pipe 30: heat exchanger

31a: 1st flow room 31b: 2nd flow room

32: solution transfer pipe 33: air conditioning separator

35: heating steam supply pipe 36: agricultural liquid drain pipe

37a, 37b, 37c: Communication tube 38a, 38b: Tray

39a, 39b: capillary

1 is a partially enlarged overall cross-sectional view showing an embodiment of the present invention, the regenerator 2 and the gas-liquid separator 6, the heating and cooling separator 33, the condenser 16, the evaporator 18, the absorber in the body (1) 20 and heat exchanger 30 are arranged.

The condenser 16, the evaporator 18 and the absorber 20 are installed in the case 11 and partitioned into partitions 12a and 12b, respectively, so that the condensation chamber 13 and the evaporation chamber 14 and The absorption chamber 15 is partitioned, and the communication part 12 'is formed below the partition 12b of the vertical direction, and the evaporation chamber 14 and the lower part of the absorption chamber 15 are communicated.

The regenerator 2 is filled with lithium brimide (LiBr) in a sealed chamber in which a plurality of flues 2 'are formed so that the heat of combustion of the gas burner 3 installed below communicates with each other. To be discharged to, the regenerator (2) and gas-liquid separator (6) is connected to the nutrient solution pipe (5).

The upper portion of the gas-liquid separator 6 communicates with the steam transfer pipe 8 and the pressure equalizing pipe 10 to the condensation chamber 13 and the upper part of the second return chamber 31b of the heat exchanger 30, respectively, The solution drop pipe 9 communicates with the first flow chamber 31a of the heat exchanger 30, and an internal block plate 7 is installed to be positioned at the upper end of the nutrient solution pipe 5.

The refrigerant U magnetic pipe 27 is installed in the condensation chamber 13 in communication with the upper tray 38a of the evaporation chamber 14, and the first flow chamber 31a of the heat exchanger 30 is disposed above the absorption chamber 15. The agricultural liquid rising pipe 28 withdrawn from the) is provided in communication with the tray 38b.

In the air-conditioning separator 33, the ends of the separation pipe 35 and the communication tube 37a drawn out from the absorption chamber 15 are penetrated to both sides of the partition wall 34, and the bottom of one side of the air-conditioning separator 33 is absorbed ( 15) and the agricultural liquid drain pipe (36).

The agricultural liquid rise pipe 28, the steam transfer pipe 8 and the communication pipe 37a are communicated with each other communication pipes 37a and 37c.

The inlet and outlet of the second flow chamber 31b of the heat exchanger 30 communicate with the evaporation chamber 14 and the regenerator 2 through the rare solution drop pipe 29 and the rare solution transfer pipe 32, respectively.

In the condenser 16, the evaporator 18, and the absorber 20, the diffusion chambers 17a, 19a, 21a and the collection chambers 17b, 19b, 21b are respectively fin tubes 17c ( The water inlets 24a and the water outlets communicated with the fan coil 25 in the diffusion chamber 19a and the collecting chamber 19b of the evaporator 18, and are installed to communicate with each other by a predetermined interval by 19c and 21c. 24b) is spoken, the cooling water inlet 22a communicating with the cooling water circulation device 23 is communicated to the diffusion chamber 21a of the absorber 20, and the collection chamber 21b is the diffusion chamber 17a of the condenser 16. And a water supply pipe 26, and a cooling water outlet 22b is communicated to the water collecting chamber 17b of the condenser 16 to communicate with the cooling water circulation device 23.

The upper sides of the fin tubes 19c and 21c of the evaporator 18 and the absorber 20 are provided with trays 38a and 38b, and a plurality of capillaries 39a and 39b are provided on both sides of the trays 38a and 38b. ) Is installed.

Figure 2 is a perspective view of the main portion of the present invention, Figure 3 is a cross-sectional view taken along line AA 'of Figure 2, the condenser 16, the evaporator 18 and the absorber 20 is a plurality of fins at equal intervals in the longitudinal direction The diffusion chambers 17a, 19a and 21a and the collection chambers 17a, 19b and 21b communicate with each other at both ends of the tubes 17c, 19c and 21c.

4 is an overall cross-sectional view showing another embodiment of the present invention, showing a state in which the operation of the cooling water circulation device 23 is stopped.

In the figure, reference numeral 40 denotes a circulation jump for circulating water.

The present invention configured as described above can be switched between a use as a cooling device and a use state as a heating device.

As a cooling device, as shown in FIG. 1, when the regenerator 2 is heated by the gas burner 3 in the state where the cooling water of the normal temperature is circulated in the evaporator 18 using the cooling water circulation device 23. Lithium brimide in the regenerator 2 is boiled, and the capillary tube and the pressure difference rise through the nutrient solution tube 5, and the water vapor is released into the condensation chamber 13 through the vapor transfer tube 8. The lithium embrittlement concentrate in the state where the water vapor is released hits the blocking plate 7 and enters the first flow chamber 31a of the heat exchanger 30 through the concentrate drop pipe 9 and at the same time the condensation chamber 13 The water vapor entering the c) is cooled by the cooling water circulating in each fin tube 17c and liquefied, that is, condensed and supplied onto the tray 38a through the refrigerant U-shaped tube 27, which is again capillary 39a. Through the fin tube (19c) of the evaporator 18 through the net By the water by evaporation in the state unbeaten (霧 適) is entering the absorption chamber 15 through the communicating portion (12 ') which.

Meanwhile, the lithium embrittlement concentrate entering the first flow chamber 31a through the concentrate dropping tube 9 is absorbed through the concentrate riser 28 by the high pressure in the gas-liquid separator 6. Is supplied onto the tray 38b of the unfilled refrigerant entering the evaporation chamber 14 by falling into the fin tube 21c of the absorber 20 by the capillary tube 39b. Absorbed to form a lithium embrittlement solution, which enters the second flow chamber 31b of the heat exchanger 30 through the diluent solution dropping tube 29, and regenerators 2 through the rare solution transfer pipe 32 again. By supplying to, the above-mentioned action is repeated.

At this time, a considerable amount of heat is generated in the process of absorbing the refrigerant in which the lithium embrittlement concentrate is invincible in the absorption chamber 15. At this time, the cooling water circulating in the absorber 20 cancels the reaction heat, and evaporates. In the exaggeration of the evaporation of the liquefied refrigerant in the chamber 14, the refrigerant takes heat away from the surface of the fin tube 19c while lowering the temperature of the water circulating inside the fin tube 19c. It is possible to obtain a cooling effect through the fan coil (25) and the speech, the water circulating in the evaporator 18 is circulated to the room temperature state of about 18 ~ 20 ℃ in the initial state, but the evaporator (18) The temperature lowered to about 5 ~ 7 ℃ by the action of) can be obtained, the cooling effect can be obtained by releasing this temperature to the room through the fan coil (25).

As for the heating device, as shown in Fig. 4, when the regenerator 2 is heated with the gas burner 3 while the operation of the cooling water circulation device 23 is stopped, the regenerator 2 is used as the cooling device. The lithium embrittlement solution in the c) is cut off and rises through the nutrient solution pipe 5 so that the water vapor enters the condensation chamber 13 and the lithium embrittlement concentrate solution enters the first flow chamber 31a of the heat exchanger 30. However, since the water vapor entering the condensation chamber 13 is hardly condensed because the cooling water is not circulated in the condenser 16, the water vapor exists as water vapor, while a small amount of water is lost due to the loss of conduction heat in the process of contacting the fin tube 17C. As water vapor condenses and enters the refrigerant U-shaped tube 27, it also remains blocked due to the loss of conduction heat, so that the pressure in the condensation chamber 13 increases, and steam cannot flow through the refrigerant U-shaped tube 27. Increase It acts as a communication tube (37b) 37a in communication with the transfer pipe (8) to push up the lithium embrittlement solution present in these to the air-conditioning separator (33) to absorb the absorption chamber (15) through the agricultural solution drain pipe (36) And the water vapor is discharged to the bottom of the evaporation chamber 14, and water vapor is continuously supplied to the lower part of the evaporation chamber 14 through the heating steam supply pipe 35 while destroying the reverse cyclic action of the communication tubes 37b and 37a. While being in contact with the fin tube 19c of the evaporator 18, heat is lost to the water circulating in the fin tube 19c, and the water is heated to about 55 to 60 ° C and condensed to fall to the bottom of the evaporation chamber. do. On the other hand, through the first dropping chamber 31a of the heat exchanger 30 through the concentrate dropping tube 9, the capillary tube on the tray 38b in the upper portion of the absorption chamber 15 along the concentrate rising pipe 28. The concentrated embrittlement lithium solution falling into the fin tube (21c) in the evaporation chamber (14) absorbs water vapor that has not been condensed, falls to the bottom of the absorption chamber (15) and is mixed with the water condensed in the evaporation chamber (14). After the rare solution is liquefied and transferred to the regenerator 2 through the rare liquid transfer pipe 32, the above-described action is repeated to maintain the temperature of the water circulating in the evaporator 18 to about 55 to 60 ℃, By heating this temperature to the room through the fan coil 25 it is possible to obtain a heating effect.

As described above, in the absorption type cooling and heating unit, the condenser 16, the evaporator 18, the absorber 20, and the cooling water and the water circulating therein have a very important correlation. ), The evaporator 18 and the absorber 20 are fin tubes 17c and 19c having an appropriate length between the diffusion chambers 17a, 19a, 21a and the collection chambers 17b, 19b, 21b, respectively. 21c is in communication with each other, and the fin tubes 17c, 19c, and 21c are arranged at equal intervals in the horizontal and vertical directions so that the refrigerant and the concentrated solution supplied from the steam and the capillaries 39a and 39b are finned. The outer surfaces of the tubes 17c, 19c, and 21c can be evenly contacted, so that condensation, evaporation, and absorption efficiency due to heat exchange can be performed at the best state, and the structure can minimize the volume. Will be.

The present invention changes the fin tubes connecting the diffusion chamber and the collecting chamber from the conventional spiral configuration to the straight tube configuration, making the production simple and perfect vacuum, so that efficient heat exchange can be performed, thereby greatly reducing the overall size. It is possible to install the absorption air-conditioner in the home of the general home, providing a comfortable indoor environment as well as the effect that can greatly contribute to energy saving.

Claims (8)

With the regenerator 2 and gas-liquid separator 6 heated by the gas burner 3 in the main body 1, the air-conditioning separator 33, the condenser 16, the evaporator 18, the absorber 20, and the heat exchanger 30 In the absorption type cooling and heating unit in which the regenerator 2 and the gas-liquid separator 6 are extended to the nutrient solution pipe 5, the condenser 16, the evaporator 18, and the absorber 20 are the case 11. The condensation chamber 13, the evaporation chamber 14, and the absorption chamber 15 which are provided inside and partitioned into the partition 12a, 12b of a horizontal and a vertical direction, respectively, are formed, and it communicates below the vertical partition 12b of a vertical direction. An absorption type air conditioner / heater having a portion 12 '. The condenser 16, the evaporator 18, and the absorber 20 are each arranged between a plurality of diffusion chambers 17a, 19a, 21a and collection chambers 17b, 19b, 21b. Absorption-type small air conditioner / heater with fin tubes (17c) (19c) and (21c) in communication. The absorption type air conditioner / heater of claim 1, wherein the refrigerant U-shaped tube (27) is provided to communicate with the lower portion of the condensation chamber (13) and the upper portion of the evaporation chamber (14). The absorption type air conditioner / heater according to claim 2, wherein the fin tubes (17c) (19c) (21c) are arranged at equal intervals in the horizontal and vertical directions, respectively. The absorption type air conditioner / heater of claim 2 or 4, wherein the trays (38a, 38b) are provided above the fin tubes (19c) (21c). The absorption type air conditioner / heater of claim 5, wherein a plurality of capillary tubes (39a, 39b) are provided on both sides of the trays (38a, 38b). The absorption type air conditioner according to claim 2, wherein a water inlet (24a) and a water outlet (24b) are respectively connected to the diffusion chamber (19a) and the collection chamber (19b) of the evaporator (18). The cooling water inlet 22a and the cooling water outlet 22b are respectively connected to the diffusion chamber 21a of the absorber 20 and the collection chamber 17b of the condenser 16, and the water absorber 20 is connected. An absorption type air conditioner / heater provided with a water collecting pipe (21b) and a diffusion chamber (17a) of the condenser (16) communicating with a water pipe (26).