JPH10122687A - Air cooled absorption type refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the air cooling capacity and the absorption capacity, and miniaturize the whole of a device by a method wherein a heat exchange area between a condenser of which the thermal load is large, and an absorbent condenser air cooling unit, is expanded so as to be sufficiently large, and a temperature difference to an air stream is made sufficiently large. SOLUTION: A condenser 9, an absorber 14, and an absorbent cooler 15 are respectively constituted of an air cooling structure, and an evaporator 11 and the absorber 14 which are integrated, are made the center, and the flat plate-form condenser 9, the hook-shape absorbent cooler 15, and non-air-cooled units such as a high temperature regenerator 5 and a low temperature solution heat-exchanger 4, are provided around the evaporator 11 and the absorber 14. Then, a heat exchange area between the condenser 9 of which the thermal load amount is large, and air of an air cooling unit of the absorbent condenser 15, is expanded so as to be sufficiently large, and a temperature difference to an air steam is made sufficiently large as well. As a result, this refrigerating device is made compact, and respective air cooling efficiencies and absorption capacities of the condenser 9, the absorber 14 and the absorbent cooler 15 can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-cooled absorption refrigeration system in which the heat of condensation generated in a condenser and the heat of absorption generated in an absorber are cooled and radiated by an air flow.

[0002]

2. Description of the Related Art Generally, in a condenser portion of an air-cooled absorption refrigeration system, heat of condensation is generated due to condensation of refrigerant vapor, and in an absorber portion, absorption heat is generated by absorption of refrigerant vapor supplied from an evaporator. Must be removed.

For this reason, conventionally, a water-cooling type or an air-cooling type cooling means is generally provided, but a water-cooling type cooling means is provided with a high cooling efficiency but requires a water source and a cooling tower. For example, the system has a disadvantage that the system is complicated, large, and the cost is high.

[0004] Under such circumstances, recently, various structures of an air-cooled condenser, an absorber, and an absorption liquid cooler have been proposed.

[0005] Most of them are disclosed in, for example, JP-A-2-192533 and JP-A-3-105516.
As shown in Japanese Patent Publication No. 9 and the like, the body part of each of the condenser, the absorber, and the absorbing liquid cooler is formed in a heat transfer tube structure, and a radiation fin is provided on an outer peripheral portion of the body part of the heat transfer tube structure. To form a so-called cross-fin type air-cooled heat exchanger structure, and is configured to cool the air by an air flow by a ventilation means such as a fan.

[0006]

However, in the case of the above-mentioned conventional structure, a condenser, an absorber, an absorbing liquid cooler and the like having an air-cooled structure are simply arranged side by side from the upstream side to the downstream side of the air flow. In addition, the effective temperature difference with the airflow in each air-cooling section is ensured, the heat exchange area according to the heat load of each part with respect to the airflow is ensured, and the layout of each part is made compact by realizing them effectively. Factors such as these have not been adequately studied, and there is a limit to the improvement of air cooling performance and absorption performance, and there is a problem that the overall device is not compact.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has the following means for solving the problems.

That is, as shown in FIGS. 1 to 4, for example, the air-cooled absorption refrigeration apparatus of the present invention includes a condenser 9 for condensing refrigerant vapor and an evaporator for evaporating the refrigerant liquid condensed in the condenser 9. An absorber 11, an absorber 14 for absorbing the refrigerant vapor evaporated by the evaporator 11 with respect to the absorbent, and an absorbent cooler 15 for cooling the absorbent supplied to the absorber 14. In the air-cooled absorption refrigeration apparatus, each of the condenser 9, the absorber 14, and the absorbent cooler 15 is formed in an air-cooled structure, and the condenser 9, the absorber 9, and the absorber 9 are surrounded around the evaporator 11 and the absorber 14. The liquid cooler 15 is provided.

As described above, the condenser 9 and the absorber 1
4. If the parts requiring cooling, such as the absorbent heat exchanger 15, have an air-cooled structure, the system configuration is relatively simple and compact as a whole as compared with the conventional water-cooled structure.

However, on the other hand, the cooling efficiency is inferior, and the improvement of the absorption performance is insufficient. Therefore, in order to improve the absorption efficiency by improving the cooling efficiency as much as possible, the air flow to be supplied is considered in consideration of the heat load in each part of the condenser 9, the absorber 14, and the absorbing liquid cooler 15. It is necessary to make the layout on the ventilation system path such that the temperature difference between the two can be as large as possible. In addition, it is desirable that this not only does not contradict the demand for compactness, but rather can actively respond to the demand for compactness.

As described above, each of the condenser 9, the absorber 14, and the absorbing liquid cooler 15 is connected to, for example, the heat transfer bodies 9a, 14a,
15a and a heat-radiating fin 9b, 14b, 15b provided on the outer periphery of the heat transfer body 9a, 14a, 15a.
When the condenser 9 and the absorption liquid cooler 15 are provided so as to surround the periphery thereof, the heat exchange area between the air of the condenser 9 and the air cooling part of the absorption liquid cooler 15 having a large heat load is set to the periphery. The temperature difference from the air flow must be sufficiently large because the air flow can be enlarged sufficiently without restriction and can be positioned at the most upstream side of the air flow blowing system. Can be. As a result, the air-cooling performance and air-cooling efficiency are improved, and the function of the absorber 14 can be realized if the function centering on the absorption function can be realized.

In addition, since the evaporator 11 and the absorber 14 are provided by effectively utilizing the inner empty space surrounded by the evaporator 11 and the absorber 14, the structure of the entire apparatus is extremely compact, and the piping distance is short. I'm done.

A fan 10, which forms an air flow for air cooling and cools each of the condenser 9, absorber 14, and absorption liquid cooler 15 having an air cooling structure by the air flow, has an evaporator substantially at the center of the apparatus. Since it is provided above the vessel 11 and the absorber 14, one fan can be shared for each part, which contributes to downsizing by eliminating the need for a plurality of fans.

In the above construction, for example, the heat transfer body 14a of the absorber 14 is formed in a cylindrical body, and the evaporator 11 is integrated into the absorber 14 or the heat transfer body of the absorber 14 is integrated. When the body (14a) is formed in a donut-shaped double-walled cylindrical body and the evaporator 11 is integrally incorporated in the absorber 14, the evaporator communicates entirely in the absorber.
No refrigerant vapor pressure loss occurs in the absorber, and the absorption capacity (absorption efficiency) is greatly improved. As a result, the pressure at the outlet of the absorber can be kept equal to the evaporator pressure.

[0015] Further, the device itself can be made compact.

In the above configuration, other units such as the high-temperature regenerator 1 and the low-temperature regenerator 7 are also connected to the condenser 9 and the absorption liquid cooler 15 to surround the evaporator 11 and the absorber 14. When provided in such a state, the connection between the condenser 9, the absorber 14, and the absorption liquid cooler 15 can be facilitated, and the entire apparatus can be formed compact.

In the case where the heat transfer body 14a of the absorber 14 is formed as a donut-shaped double-walled cylindrical body as described above, other units such as the high-temperature regenerator 1 and the low-temperature regenerator 7 are used. , Can be provided in the space inside the heat transfer body 14a of the absorber 14, and the size can be further reduced.

[0018]

As described above, according to the air-cooled absorption refrigeration apparatus of the present invention, the air-cooled absorption refrigeration apparatus having a high air-cooling efficiency of each of the condenser, the absorber and the absorption liquid cooler and having a high absorption performance while being compact. Can be provided.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIGS. 1 and 2 show the configuration of an air-cooled absorption refrigeration apparatus according to Embodiment 1 of the present invention.

In the present embodiment, for example, a lithium bromide solution (LiBr solution) is used as the absorbing solution, and water (H ₂
O) is adopted.

In the drawing, reference numeral 1 denotes a heating vessel 3 at a lower side.
Is a high-temperature regenerator provided with a gas-liquid separator 6 on the upper side.
At the bottom of the heating vessel 3 of the high-temperature regenerator 1, a heating source 2 such as a gas burner is provided. Then, heat is recovered as much as possible sequentially through a low-temperature solution heat exchanger 4 and a high-temperature solution heat exchanger 5 to be described later, and after completion of the absorption operation, the temperature is raised as much as possible and supplied into the heating vessel 3. The dilute lithium bromide solution 1 is heated and boiled under a pressure of, for example, 600 to 700 mHg, and refrigerant vapor a (for example, 160 ° C.) and lithium bromide concentrated solution b (for example, 160 ° C.) are formed in the upper gas-liquid separator 6.
And separate playback.

Reference numeral 7 denotes a low-temperature regenerator, and the refrigerant vapor a separated and regenerated by the gas-liquid separator 6 and the high-temperature solution heat exchanger 5 separated and regenerated by the gas-liquid separator 6. The lithium bromide dilute solution k (for example, 9) after the completion of the absorption operation, the temperature of which has been raised slightly through the low-temperature solution heat exchanger 4
0 ° C.) and a lithium bromide concentrated solution c (for example, 95 ° C.) having a considerably lowered temperature due to heat exchange, thereby condensing the refrigerant vapor a and causing the odor generated during the heat exchange. Evaporated moisture d in concentrated lithium chloride solution c
(For example, 98 ° C.).

Reference numeral 9 denotes a condenser, which is formed in a cross-fin type air cooling structure in which a plurality of radiating fins 9b, 9b,... Are provided on the outer periphery of a tubular heat transfer body 9a through which refrigerant vapor flows. Have been. The condenser 9 introduces together the refrigerant liquid e condensed by the low-temperature regenerator 7 and the evaporated water d in the lithium bromide concentrated solution c, and cools the refrigerant from the blower fan 10 under a pressure of, for example, about 60 mmHg. The refrigerant (water) h (for example, 41) in a liquid state is cooled by wind.
° C).

Reference numeral 11 denotes an evaporator, which is formed around an evaporator coil 12 through which cold water passes. The evaporator 12 is integrally formed with the evaporator 12 by inserting the evaporator coil 12 from above into a heat transfer body 14a of an absorber 14 and surrounding the eliminator 11a. By effectively utilizing the negative pressure generated by the refrigerant vapor absorbing action of
A low-pressure state of about 6 mmHg is reliably maintained, and the refrigerant water h condensed in the condenser 9 under the low pressure is sprayed onto, for example, a cooling water circulation type evaporation coil 12 to evaporate about 5 ° C. For example, cold water of 12 ° C. supplied into 12 is cooled to 7 ° C.
And supplies it to an air conditioning heat exchanger (not shown).

Reference numeral 14 denotes an absorber, which is constructed by providing a large number of radiating fins 14b, 14b,... Solution guides 13a and 13b are provided on the liquid spraying parts on both sides of the peripheral portion of the upper space 21.

The absorber 14 converts the lithium bromide concentrated solution f (for example, 95 ° C.) from the low-temperature regenerator 7 through the low-temperature solution heat exchanger 4 into the lithium bromide dilute solution j (from the air-cooled absorber 14). (For example, 40 ° C.) and a lithium bromide concentrated solution i (for example, 50 ° C.) cooled to a predetermined temperature or lower by heat exchange with a lithium bromide dilute solution j after absorbing refrigerant vapor from the lower liquid retaining portion 22. It is introduced into the inside of the solution guides 13a and 13b, and is brought down to the inner wall surface of the heat transfer body 14a using the slopes of the solution guides 13a and 13b to flow down in a liquid film state. The dilute solution j introduced from the liquid retaining portion 22 is moved by the solution pump 16 to the absorption liquid cooler 15 having a cross-fin type air cooling structure provided with radiation fins 15b on the outer periphery of the tubular heat transfer body 15a. It is introduced after being supercooled through the interposed absorbent circulation circuit 30.

Then, as described above, each solution guide 13
The concentrated solution and the dilute solution in the supercooled state which flow down from above to below in the form of a liquid film along the inner wall surface of the heat transfer body 14a via the a and 13b have a radius through the eliminator 13 in the flowing down state. The refrigerant vapor (water vapor) from the evaporator 11 diffused uniformly in the direction is efficiently absorbed.
At this time, part of the absorbed heat generated due to the absorption of the refrigerant vapor is radiated to the outside through a large number of radiation fins 14b provided on the outer peripheral portion of the heat transfer body 14a. Then, the cooling air is efficiently cooled by the cooling air from the blower fan 17. As a result, a reduction in the absorption capacity at the absorber portion is prevented as much as possible.

In this case, the blower fan 17
Is formed above the evaporator 11 and the absorber 14, and forms a ventilation system passage that blows upward through the absorber 14 from the condenser 9 and the absorbing liquid cooler 15 arranged as shown in the figure. And the absorber 1
Absorbent liquid heat exchanger 15 is provided so as to be located on the upstream side of the air flow from the position 4. Thus, the supercooling efficiency of the dilute lithium bromide solution j supplied to the absorber 14 via the absorbent circulation circuit 30 is sufficiently increased.

As described above, a part of the lithium bromide dilute solution j that has released the heat of absorption through the absorbent cooler 15 and the absorber 14 is passed through the solution pump 16 to the lithium bromide dilute solution j. The low-temperature solution heat exchanger 4 and the high-temperature solution heat exchanger 5 in the return passage 31 are sequentially heat-exchanged with the high-temperature lithium bromide concentrated solution from the low-temperature and high-temperature regenerators 7 and 1, for example, at 90 ° C., 1
After the temperature is gradually increased to 40 ° C., it is returned to the heating vessel 3 of the high-temperature regenerator 1 again, heated and boiled, and regenerated.

In the air-cooled absorption refrigeration system of the present embodiment, the condenser 9 for condensing the refrigerant vapor g from the low-temperature regenerator 7 as described above, and the refrigerant liquid h condensed by the condenser 9
Evaporator 11, and a lithium bromide dilute solution j supplied in a circulating state via an absorbent circulation circuit 30 by a solution pump 16 and a lithium bromide concentrated solution i supplied from a low-temperature solution heat exchanger 4. On the other hand, an absorber 14 for absorbing the refrigerant vapor evaporated by the evaporator 11, an absorber cooler 15 for cooling the lithium bromide dilute solution j supplied to the absorber 14 in a circulating state, and a high-temperature regenerator 1. In an air-cooled absorption refrigeration system including units that do not particularly require cooling, such as a low-temperature regenerator 7, a high-temperature solution heat exchanger 5, and a low-temperature solution heat exchanger 4, for example, as shown in FIG. Each of the vessel 9, the absorber 14, and the absorbent cooler 15 is formed into an air-cooled unit structure having a heat transfer body and a radiation fin as described above, while the evaporator 11 and the absorber 14 are formed as shown in FIG.
Around the four sides of the condenser 9 around the outside,
A refrigeration apparatus is configured by connecting and connecting units such as the absorbent cooler 15, the high-temperature regenerator 1, and the low-temperature regenerator 7 in a rectangular shape as a whole.

By the way, in order to improve the cooling efficiency as much as possible to enhance the absorption performance, the condenser 9 and the absorber 1 are required.
4. In consideration of the heat load in each part of the absorption liquid cooler 15, it is necessary to provide a layout on a ventilation path so that the temperature difference from the supplied air flow can be as large as possible. . In addition, it is desirable that this not only does not contradict the demand for compactness, but rather can actively respond to the demand for compactness.

As described above, each of the condenser 9, the absorber 14, and the absorption liquid cooler 15 is formed into the above-described air-cooled structure, and the evaporator 11 and the absorber 14 are integrated with each other. A flat condenser 9 surrounding the periphery.
And a non-air cooling unit such as a high-temperature regenerator 5 and a low-temperature solution heat exchanger 4 provided with a hook-shaped absorption liquid cooler 15 and a condenser 9 and absorption liquid cooler 15 with a large heat load. The heat exchange area with the air in the air cooling section can be enlarged sufficiently without restriction of the surroundings as shown in the figure, and each of them is located on the most upstream side of the air flow blowing system. From being able to do
In any case, the temperature difference from the air flow can be made sufficiently large. As a result, air cooling performance and air cooling efficiency are improved,
In the absorber 14 portion, it is sufficient if a function centering on the absorption function can be realized, so that the refrigerant vapor absorption performance also increases.

Further, since the evaporator 11 and the absorber 14 are provided by effectively utilizing the inner empty space surrounded by the evaporator 11 and the absorber 14, the structure of the entire apparatus becomes extremely compact and the piping distance is short. I'm done.

A fan 1 for forming an air flow for air cooling
0 is provided above the evaporator 11 and the absorber 14 in the central part, so that one fan can be used in common for each air-cooling unit, and the number of fans is reduced, so that the size is reduced. Will contribute.

Further, the evaporator 11 is a cylindrical absorber 14
As a result, the evaporator 11 communicates entirely within the absorber 14, and as a result, the refrigerant vapor pressure loss does not occur in the absorber 14, and the absorption capacity (absorption efficiency) is greatly improved. As a result, the pressure at the outlet of the absorber can be kept equal to the evaporator pressure.

As a result, according to the air-cooled absorption refrigeration apparatus according to the first embodiment of the present invention, each of the condenser, the absorber, and the absorption liquid cooler has high air-cooling efficiency and high absorption performance while being compact. An air-cooled absorption refrigeration apparatus can be provided.

(Embodiment 2) FIGS. 3 and 4 show the configuration of an air-cooled absorption refrigeration apparatus according to Embodiment 2 of the present invention.

In this embodiment, for example, a lithium bromide solution (LiBr solution) is used as the absorbing liquid, and water (H ₂
O) is adopted.

In the figure, reference numeral 1 denotes a heating vessel 3 on the lower side.
Is a high-temperature regenerator provided with a gas-liquid separator 6 on the upper side.
At the bottom of the heating vessel 3 of the high-temperature regenerator 1, a heating source 2 such as a gas burner is provided. Then, heat is recovered as much as possible sequentially through a low-temperature solution heat exchanger 4 and a high-temperature solution heat exchanger 5 to be described later, and after completion of the absorption operation, the temperature is raised as much as possible and supplied into the heating vessel 3. The dilute lithium bromide solution 1 is heated and boiled under a pressure of, for example, 600 to 700 mHg, and refrigerant vapor a (for example, 160 ° C.) and lithium bromide concentrated solution b (for example, 160 ° C.) are formed in the upper gas-liquid separator 6.
And separate playback.

Reference numeral 7 denotes a low-temperature regenerator. The refrigerant vapor a is separated and regenerated in the gas-liquid separator 6 and the refrigerant vapor a is also separated and regenerated in the gas-liquid separator 6 and then the high-temperature solution heat exchanger 5 The lithium bromide dilute solution k (for example, 9) after the completion of the absorption operation, the temperature of which has been raised slightly through the low-temperature solution heat exchanger 4
0 ° C.) and a lithium bromide concentrated solution c (for example, 95 ° C.) having a considerably lowered temperature due to heat exchange, thereby condensing the refrigerant vapor a and causing the odor generated during the heat exchange. Evaporated moisture d in concentrated lithium chloride solution c
(For example, 98 ° C.).

Further, reference numeral 9 denotes a condenser, which is formed in a cross-fin type air cooling structure in which a plurality of radiating fins 9b, 9b... Are provided on the outer periphery of a tubular heat transfer body 9a through which refrigerant vapor flows. Have been. The condenser 9 introduces together the refrigerant liquid e condensed by the low-temperature regenerator 7 and the evaporated water d in the lithium bromide concentrated solution c, and cools the refrigerant from the blower fan 10 under a pressure of, for example, about 60 mmHg. The refrigerant (water) h (for example, 41) in a liquid state is cooled by wind.
° C).

Reference numeral 11 denotes an evaporator, which is formed around an evaporator coil 12 through which cold water passes. The evaporator 12 is integrally formed with the evaporator coil 12 by inserting a part of the evaporator coil 12 from above into a heat transfer body 14a of an absorber 14 having a donut-shaped double-walled cylindrical body, which will be described later. By effectively utilizing the negative pressure generated by the refrigerant vapor absorbing action in the absorber 14, for example,
A low pressure state of about 6 mmHg is surely maintained, and the refrigerant water h condensed in the condenser 9 under the low pressure is sprinkled onto, for example, a cooling water circulation type evaporating coil 12 to evaporate at about 5 ° C. For example, cold water of 12 ° C. supplied into 12 is cooled to 7 ° C.
And supplies it to an air conditioning heat exchanger (not shown).

Reference numeral 14 denotes an absorber, and the absorber 14 has a large number of heat dissipating fins 14 on the outer periphery of a heat transfer body 14a formed of a cylindrical body having a donut-shaped double-walled structure having a considerably large diameter.
, 14b... are provided, and solution guides 13, 13 are provided in the liquid spraying portions on both sides of the peripheral edge of the upper space 21.

The absorber 14 converts the lithium bromide concentrated solution f (for example, 95 ° C.) from the low-temperature regenerator 7 through the low-temperature solution heat exchanger 4 into the lithium bromide dilute solution j (from the air-cooled absorber 14). (For example, 40 ° C.), a lithium bromide concentrated solution i (for example, 50 ° C.) whose temperature has been lowered to a predetermined temperature or less is introduced into the lower liquid retaining portion 22, while the refrigerant vapor is absorbed from the liquid retaining portion 22. Of the lithium bromide dilute solution j is introduced into the inside of the solution guides 13, 13 and is brought down to both inner wall surfaces of the heat transfer body 14a using the slopes of the solution guides 13, 13 to flow down in a liquid film state. The dilute solution j introduced from the liquid retaining portion 22 is a cross-fin type air-cooled absorption liquid cooler having a heat radiating fin 15b provided on the outer periphery of a tubular heat transfer body 15a by a solution pump 16. It is introduced after being supercooled through the absorbent circulation circuit 30 interposed therebetween.

Then, as described above, the solution guides 13, 1
The dilute solution in a supercooled state that flows down from above in a liquid film state through both inner wall surfaces of the heat transfer body 14a through 3 is uniformly diffused to both sides in the radial direction in the flow down state. The refrigerant vapor (water vapor) from the evaporator 11 is efficiently absorbed. At this time, a part of the heat absorbed due to the absorption of the refrigerant vapor is divided into a large number of radiating fins 14b provided on the outer peripheral portion of the heat transfer body 14a.
The heat is radiated to the outside via the cooling fan and is efficiently cooled by the cooling air from the blower fan 10. As a result, a reduction in the absorption capacity at the absorber portion is prevented as much as possible.

In this case, the blower fan 17
Is formed above the evaporator 11 and the absorber 14, and forms a ventilation system passage that blows upward through the absorber 14 from the condenser 9 and the absorbing liquid cooler 15 arranged as shown in the figure. And the absorber 1
Absorbent liquid heat exchanger 15 is provided so as to be located on the upstream side of the air flow from the position 4. Thus, the supercooling efficiency of the lithium bromide dilute solution j supplied to the absorber 14 via the absorbent circulation circuit 30 is sufficiently increased.

As described above, a part of the dilute lithium bromide solution j that has released the heat of absorption through the absorption liquid cooler 15 and the absorber 14 is passed through the solution pump 16 to the dilute lithium bromide solution. The low-temperature solution heat exchanger 4 and the high-temperature solution heat exchanger 5 in the return passage 31 are sequentially heat-exchanged with the high-temperature lithium bromide concentrated solution from the low-temperature and high-temperature regenerators 7 and 1, for example, at 90 ° C., 1
After the temperature is gradually increased to 40 ° C., it is returned to the heating vessel 3 of the high-temperature regenerator 1 again, heated and boiled, and regenerated.

In the air-cooled absorption refrigeration system of the present embodiment, the condenser 9 for condensing the refrigerant vapor g from the low-temperature regenerator 7 as described above, and the refrigerant liquid h condensed by the condenser 9
Evaporator 11, and a lithium bromide dilute solution j supplied in a circulating state via an absorbent circulation circuit 30 by a solution pump 16 and a lithium bromide concentrated solution i supplied from a low-temperature solution heat exchanger 4. On the other hand, an absorber 14 for absorbing the refrigerant vapor evaporated by the evaporator 11, an absorber cooler 15 for cooling the lithium bromide dilute solution j supplied to the absorber 14 in a circulating state, and a high-temperature regenerator 1. An air-cooled absorption refrigeration system including a low-temperature regenerator 7, a high-temperature solution heat exchanger 5, a low-temperature solution heat exchanger 4, and other units that do not particularly require cooling, for example, as shown in FIG. 9, the absorber 14 and the absorption liquid cooler 15 are each formed into an air cooling unit structure having a heat transfer body and a radiation fin as described above, while the evaporator 11 having an integrated structure as shown in FIG.
The flat plate-shaped condenser 9 and the U-shaped absorption liquid cooler 15 are connected and arranged in a rectangular shape around the four sides around the absorber and the absorber 14 as a whole.
The unit such as the high-temperature regenerator 1 and the low-temperature regenerator 7 having the above-mentioned integrated structure is incorporated by utilizing the space inside the heat transfer body 14a.

In order to improve the absorption performance by improving the cooling efficiency as much as possible, the condenser 9 and the absorber 1
4. In consideration of the heat load in each part of the absorption liquid cooler 15, it is necessary to provide a layout on a ventilation path so that the temperature difference from the supplied air flow can be as large as possible. . In addition, it is desirable that this not only does not contradict the demand for compactness, but rather can actively respond to the demand for compactness.

As described above, each of the condenser 9, the absorber 14, and the absorption liquid cooler 15 is formed into the above-described air-cooled structure, and the evaporator 11 and the absorber 14 are integrated with each other. A flat condenser 9 surrounding the periphery.
And the U-shaped absorption liquid cooler 15, the condenser 9 and the absorption liquid cooler 15 with a large heat load are provided.
The heat exchange area with the air in the air cooling section can be enlarged sufficiently without restriction of the surroundings as shown in the figure, and each of them is located on the most upstream side of the air flow blowing system. Therefore, the temperature difference from the air flow can be made sufficiently large in any case. As a result, the air-cooling performance and air-cooling efficiency are improved, and the function of the absorber 14 can be realized if the function centering on the absorption function can be realized.

Further, the evaporator 11 and the absorber 14 are provided by effectively utilizing the inner empty space surrounded by them, and are integrated with each other.
Is formed by a doughnut-shaped double-walled cylindrical body, and the regenerators 1 and 7 for high temperature and low temperature can be integrally incorporated by utilizing an open space extending in the vertical direction inside the absorber 14. Therefore, the structure of the entire apparatus becomes extremely compact, and the piping distance can be reduced.

A fan 1 for forming an air flow for air cooling
0 is provided above the evaporator 11 and the absorber 14 in the central part, so that one fan can be used in common for each air-cooling unit, and the number of fans is reduced, so that the size is reduced. Will contribute.

Further, the evaporator 11 is integrally incorporated in the absorber 14 formed of the above-mentioned donut-shaped double-walled cylindrical body, and as a result of the evaporator 11 being entirely connected in the absorber 14, No refrigerant vapor pressure loss occurs in the absorber 14, and the absorption capacity (absorption efficiency) is greatly improved. As a result, the pressure at the outlet of the absorber can be kept equal to the evaporator pressure, and the absorption capacity can be greatly improved.

As a result, according to the air-cooled absorption refrigeration apparatus according to Embodiment 2 of the present invention, the air-cooling efficiency of each of the condenser, the absorber, and the absorption-liquid cooler is high, while being extremely compact, and the absorption performance is high. The air-cooled absorption refrigeration system with high refrigeration can be provided.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of an air-cooling absorption refrigeration apparatus according to Embodiment 1 of the present invention, with a fan removed.

FIG. 2 is a longitudinal sectional view of the same device.

FIG. 3 is a plan view showing a configuration of an air-cooling absorption refrigeration apparatus according to Embodiment 2 of the present invention, with a fan removed.

FIG. 4 is a longitudinal sectional view of the same device.

[Explanation of symbols]

1 is a high temperature regenerator, 7 is a low temperature regenerator, 9 is a condenser, 9a is a heat transfer body, 9b is a radiation fin, 10 is a blower fan, 11
Is an evaporator, 12 is a cooling water circulation type evaporating coil, 14 is an absorber, 14a is a heat transfer body, 14b is a radiation fin, 15 is an absorption liquid cooler, 15a is a heat transfer body, 15b is a radiation fin,
16 is a solution pump.

Claims (7)

[Claims] 1. A condenser (9) for condensing refrigerant vapor, an evaporator (11) for evaporating the refrigerant liquid condensed in the condenser (9), and an evaporator (11) for absorbing liquid. An air-cooled absorption refrigeration system comprising: an absorber (14) for absorbing the refrigerant vapor evaporated in step (1); and an absorption liquid cooler (15) for cooling the absorption liquid supplied to the absorber (14).
The condenser (9), the absorber (14), and the absorption liquid cooler (1)
Each of 5) is formed in an air cooling structure, and a condenser (9) and an absorbing liquid cooler (15) are provided around the evaporator (11) and the absorber (14). Air-cooled absorption refrigeration system. 2. The air-cooling structure comprises a heat transfer body (9).
a), (14a), (15a) and the heat transfer body (9a),
2. The air-cooled absorption refrigeration system according to claim 1, wherein the air-cooling absorption refrigeration system is provided with radiation fins (9b), (14b), and (15b) provided on the outer periphery of (14a) and (15a). 3. A fan (10) for cooling each of the condenser (9), the absorber (14) and the absorbing liquid cooler (15) by an air flow, and the fan (10) is connected to the absorber (14). The air-cooled absorption refrigeration system according to claim 1 or 2, wherein the air-cooled absorption refrigeration system is provided above. 4. The heat transfer body (14a) of the absorber (14) is formed in a cylindrical body, and the evaporator (11) is integrated into the absorber (14). Terms 1, 2
Or the air-cooled absorption refrigeration apparatus according to 3. 5. The evaporator (11) wherein the heat transfer body (14a) of the absorber (14) is formed in a donut-shaped double-walled cylindrical body.
4. An air-cooled absorption refrigeration system according to claim 1, wherein said refrigeration unit is integrated into said absorber (14). 6. Other units such as a high-temperature regenerator (1) and a low-temperature regenerator (7) are connected to a condenser (9), an absorbent cooler (15) and an evaporator (11) and an absorber. (1
5. The air-cooling absorption refrigeration system according to claim 1, wherein the air-cooling absorption refrigeration system is provided so as to surround 4). 7. An air-cooled absorption system according to claim 5, wherein other units such as a high-temperature regenerator (1) and a low-temperature regenerator (7) are provided inside the absorber (14). Refrigeration equipment.