JPH0718937Y2 - Air-cooled absorption refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an air-cooled absorption refrigerator having an absorber and a condenser cooled by air.

<Prior Art> Japanese Patent Laid-Open No. 58-208559 discloses a conventionally known air-cooled absorption type refrigerator / cooler that serves as an air-cooled absorption cold / hot water generator for extracting cold water. In this type of refrigerator, as shown in FIG. 4, an absorber a having an evaporator a in the upper portion and a downflow pipe portion c with a fin b in the lower portion is provided on one side, a low temperature regenerator e is provided at the upper portion, and a fin b is provided at the lower portion. A condenser g having an attached down-flowing pipe part f is opposed to each other, a fan h is provided above the evaporator a and the low temperature regenerator e, and a burner i, a high temperature regenerator j, a high temperature heat exchanger k, and The low temperature heat exchanger m and the like are simply arranged. That is, the main equipment such as the burner, the high temperature regenerator, the high temperature heat exchanger, and the low temperature heat exchanger are exposed.

<Problems to be solved by the invention> In other words, the burner, high temperature regenerator, high temperature heat exchanger,
If the low-temperature heat exchanger etc. is exposed, water will inevitably be splashed when it rains, and for example, in the high-temperature regenerator, the heat retaining material to prevent heat loss cannot absorb the water and maintain the prescribed heat retention, Sufficient waterproofing is required. In particular, electric parts such as burners and pumps are of a drip-proof type, which leads to cost increase. Further, this system has a drawback that the amount of cooling air (see the arrow in FIG. 4) changes due to the start / stop of the outdoor fan and the rotation speed conversion, and the suction air pressure of the burner fluctuates, affecting the combustion state. For example, when the absorber and the condenser are not isolated from the machine room as in the absorption refrigerator of Japanese Patent Laid-Open No. 50-120042, there is a high temperature around the absorber and the condenser when the fan is stopped. Exhaust gas accumulates, the temperature of the absorber and the condenser rises, the capacity of the absorber and the condenser significantly decreases, and it takes time for the capacity to be restored even when the fan restarts operation.

Further, in this type, since the steam of the air-cooled absorber is introduced from the upper part of the vertical pipe, it is necessary to raise the pressure of the evaporator more than the pressure loss of the steam in the pipe.

In view of the above-mentioned circumstances, the present invention is an air-cooled absorber that eliminates the above-mentioned drawbacks by housing main equipment including a regenerator (burner, high-temperature heat exchanger, low-temperature heat exchanger, pump, etc.) in the housing and shutting it off from the outside. The purpose is to provide a refrigerator.

<Means for Solving the Problem> The present invention relates to an air-cooled absorption refrigerating machine equipped with a fan in the middle upper part between a vertical air-cooled heat exchange absorber and an air-cooled heat exchange condenser that face each other. A machine room is provided under the reactor, the machine room is separated from the absorber and the condenser by a partition wall, and main equipment including a regenerator, a low temperature heat exchanger, a high temperature heat exchanger, a burner, a pump, etc. in the machine chamber. Is provided.

<Operation> Due to the above-mentioned configuration, since the high temperature regenerator, burner, high temperature heat exchanger, low temperature heat exchanger, pump, etc., which are easily affected by wind and rain, are housed in the machine room casing, Even if there is a change in the air-cooling air that flows upward from the vertical downflow pipe that is the side part due to the stoppage of the outdoor fan installed above and changes in the rotation speed, there is no effect and the prescribed combustion state is maintained. obtain. Also, since these device parts are located inside the housing,
No water splashes in rainy weather.

In addition, since the steam is introduced into the air-cooled absorber by dividing the steam into the upper part of the pipe and the intermediate position, the loss of steam pressure can be minimized.

<Embodiment> Hereinafter, the present invention will be described with reference to the drawings of an embodiment.

Reference numeral 1 denotes an absorber having a downflow pipe portion 4 with a vertical fin 3 on which an evaporator 2 is arranged, and a condenser 5 is provided at a position at a predetermined interval in the absorber 1, and the condenser 5 has the above-mentioned structure. A machine pipe 8 is provided with a vertical pipe 3 with a vertical fin 3 facing the flow pipe 4, a low temperature regenerator 7 is attached to the upper part of the flow pipe 6, and a housing is formed below the absorber 1 and the condenser 5. A high temperature regenerator 9, a burner 10 for heating the high temperature regenerator 9, a high temperature heat exchanger 11, a low temperature heat exchanger 12, an absorption liquid pump 13 and other main components are housed therein, and an evaporator 2 serving as the upper portion is provided. An air-cooling fan 14 is provided above the space between the low-temperature regenerator 7 and the air-cooling absorption refrigerator 15 of a double-effect type as a whole. In this case, the pumping pipe 16 from the high temperature regenerator 9 faces the low temperature regenerator 7 via the high temperature heat exchanger 11, the refrigerant pipe 17 from the condenser 5 is connected to the evaporator 2, and the absorber 1 The dilute liquid pipe 18 is connected to the high temperature regenerator 9 via the pump 13, the low temperature heat exchanger 12 and the high temperature heat exchanger 11 to form a predetermined refrigeration cycle.

Next, this operation will be described. First, when the air-cooled absorption type refrigerator 15 is operated, the fan 14 provided at the center upper portion can be rotated so as to stand upright on both sides of the flow-down pipe portion 4 of the absorber 1 and the condenser 5. The cooling air is discharged upward from the lateral direction at the position of the down-flow pipe portion 6 via the fan 14 directly above, so that cold water is obtained from the cold water pipe 20 arranged in the evaporator 2 by the action of a predetermined refrigeration cycle. become. Reference numeral 21 is a concentrated liquid spraying section.

Here, even if the fan 14 changes the flow rate of the cooling air according to the start / stop and the change of the rotation speed and the negative pressure generated in the lower portion of the cooling air passage 19 changes, the cooling air passage 19 is also changed. Between the absorber 1 and the condenser 5, which are the lower end of the
Since 8a is located, the suction air pressure of the burner 10 in the machine room 8 does not change. Further, even if water flows down to the lower end of the inner cold air passage 19 due to rain or the like, the high temperature regenerator 9, the high temperature heat exchanger 11, the low temperature heat exchanger 12, the pump 13 and the like are not splashed with water as well as the burner 10.

Further, in this case, as shown in FIG. 2, the introduction of the refrigerant vapor into the vertically long downflow pipe portion 4 between the evaporator 2 and the absorber 1 is at a half (1/2) position of the downflow pipe portion 4. A distribution pipe 22 branched from the evaporator 2 may be connected midway. With such a configuration, the refrigerant vapor flowing through the downflow tube portion 4 of the absorber 1 is halved, and the flow resistance (pressure loss) of the vapor flowing through the tube is
It will be about 1/4. As a result, the evaporation pressure is lowered, the evaporation temperature is also lowered, and a sufficient refrigerating capacity is exhibited. Also,
As shown in FIG. 3, if the distribution pipe 22 is further branched and the refrigerant vapor is introduced into the flow-down pipe portion 4 from three points, the flow resistance becomes small, and the pressure of the evaporator 2 may not be so high.

<Effects of the Invention> As described above, the air-cooled absorption refrigerator of the present invention is provided with a machine room under the air-cooled heat exchanger (absorber, condenser), in which main equipment (burner, high-temperature heat generator) including a regenerator is installed. By housing the exchanger, low-temperature heat exchanger, pump, etc.), it will not be rained and it will be safe for electric parts. In addition, the influence of the start / stop of the outdoor fan etc. on the burner suction air amount disappears,
Stable operation can be secured. Moreover, since the absorber and the condenser are separated from the machine room, the influence of the exhaust gas from the burner on the absorber and the condenser can be avoided, and the operation of the air-absorption refrigerator can be performed from this point. Can also be more stable. In addition, the lower panel can be removed at the time of servicing, which has the advantage of easy maintenance. Further, in this case, in the absorber that performs absorption in the vertical downflow pipe portion, since the refrigerant vapor is introduced from the middle of the downflow pipe portion, the flow resistance in the pipe can be lowered, and the evaporation temperature is sufficiently lowered. It has practical effects such as obtaining a refrigerating capacity.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram of another embodiment of the absorber portion, FIG. 3 is an explanatory diagram of the absorber portion, and FIG. 4 is a conventional configuration. It is a figure. 1 ... Absorber, 2 ... Evaporator, 4 ... Downflow pipe section, 5 ...
Condenser, 6 ... Downflow pipe section, 7 ... Low temperature regenerator, 8 ... Machine room, 9 ... High temperature regenerator, 10 ... Burner, 11 ... High temperature heat exchanger, 12 ... Low temperature heat exchanger , 13 …… pump, 14 …… fan.

Front page continued (72) Inventor Takao Tanaka 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Ikume Yonezo, 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Denki Co., Ltd. (72) Yuito Kobayashi, 2-18, Keihanhondori, Moriguchi-shi, Osaka, Sanyo Electric Co., Ltd. (56) References JP-A-50-120042 (JP, A) JP-A-61-147062 (JP, A) )

Claims (1)

[Scope of utility model registration request] 1. An air-cooled absorption refrigerating machine having a fan in the upper middle part between a vertical air-cooled heat exchange absorber and an air-cooled heat exchange condenser that face each other, and a machine room is provided below the absorber and the condenser. , An air-cooled absorption device in which the machine room is separated from the absorber and the condenser by a partition wall, and main equipment including a regenerator and a low-temperature heat exchanger, a high-temperature heat exchanger, a burner, a pump, etc. is installed in the machine room. Refrigerator.