JP2586242B2 - Absorption refrigerator generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a generator for an absorption refrigerator.

[0002]

2. Description of the Related Art Generally, a generator of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. Sho 61-262566, and as shown schematically in FIG. While the passage B, the refrigerant gas outlet passage C, and the concentrated solution outlet passage (not shown) are connected, the combustion chamber D is burned on one side of the generator body A and the combustion chamber D is burned on the other side. A heat exhaust pipe E through which a gas is circulated;
The dilute solution flowing into the generator main body A through the exhaust gas is heated by the combustion gas passing through the exhaust heat pipe F, and the evaporated refrigerant gas is absorbed through the refrigerant gas outlet passage C into an absorber (not shown).
And the concentrated solution concentrated by evaporation of the refrigerant gas is supplied to the evaporator (not shown) through the concentrated solution outlet passage.
I try to return to the side.

[0003]

In the above generator, since the generator main body A is formed in a cylindrical shape, other components constituting the absorption refrigerator, such as an evaporator, When it is arranged outside the unit of the absorber, it is difficult to make the generator main body A along the outside of the unit, and there is a problem that a dead space occurs between the unit and the generator main body A.

In the above generator, since the diluted solution is heated by the heat of the combustion gas passing through the exhaust heat pipe E in the generator body A, the heating efficiency of the diluted solution is reduced. Unfortunately, in order to generate a predetermined amount of refrigerant gas, there is no other choice but to increase the size of the generator and inevitably increase the amount of solution used.

The present invention has been developed in view of the above circumstances. It is an object of the present invention to configure an absorption refrigerator while improving the heating efficiency of a dilute solution and achieving downsizing. It is an object of the present invention to provide a generator that can be rationally positioned on the side of another component.

[0006]

According to the present invention, there is provided a horizontally elongated box-shaped generator main body 1 and a dilute solution chamber S1 having a dilute solution inlet 7 opened at a lower portion of the generator main body 1. A number of solution pipes 20 communicating with the chamber S1 are densely arranged to define a heating chamber S3 and an exhaust gas passage L1 communicating with the heating chamber S3. Concentrated solution chamber S2 opening 20
Is formed, and the concentrated solution outlet 9 and the refrigerant outlet 8 are communicated with the concentrated solution chamber S2.

In the present invention, a combustor 2 is provided on one side in the longitudinal direction of the generator main body 1, and a dilute solution chamber S1 having a dilute solution inlet 7 opened at a lower portion of the generator main body 1; Many solution tubes 2 communicating with the chamber S1
0 are densely arranged to define a heating chamber S3 serving as a combustion chamber of the combustor 2 and an exhaust gas passage R1 communicating with the heating chamber S3. A concentrated solution chamber S2 with an opening 20 may be formed, and the concentrated solution outlet 9 and the refrigerant outlet 8 may communicate with the concentrated solution chamber S2.

The solution tube 20 may be formed as a straight tube to facilitate the flow of the dilute solution, and a spacer 20a may be interposed between the solution tubes 20 adjacent to each other. In the first solution pipe row L1 constituting the heating chamber S3, a solution pipe at a central portion facing the flame port 17 of the combustor 2 is:
Since the heat load is high at the high temperature part of the flame, it is preferable to displace the center part in the direction away from the flame port 17 to both sides.

A partition plate 6 forming the diluted solution chamber S1 forms a bottom of the heating chamber facing the heating chamber S3 in a boat bottom shape in which a central portion is recessed downward, and combustion gas is stored at the bottom of the heating chamber S3. May be prevented, and the outer sides of the solution tubes 20 located on the outermost side in the width direction among the solution tubes 20 standing from the partition plate 6 on both sides in the width direction of the partition plate 6 may be outside. The dilute solution flowing into the dilute solution chamber may be guided to the solution tube 20 through the inclined surface.

[0010] Further, a first solution tube row L defining a heating chamber S3.
Since the solution pipe 20 constituting the heating chamber S1 has a large heat load facing the flame of the gas burner 16, the solution pipe 20 is rarely provided below the opening of the first solution pipe row L1 defining the heating chamber S3 with respect to the diluted solution chamber S1. An inlet header 30 connected to the solution inlet 7 is provided, and the header 30 is provided with a nozzle 31 corresponding to an opening for the dilute solution chamber S1 of the first solution tube row L1. The first
It is preferable to preferentially supply a dilute solution having a low temperature to the solution tubes 20 constituting the solution tube row L1.

Further, the first solution pipe line L1-1 faces the front end of the side solution pipe line L1-1 defining the side of the heating chamber S3 and the flame port 17 of the combustor 2; Tube row L
1, a heating chamber outlet 21 is formed between the heating chamber S3 and a front solution tube row L1-2 that defines the front of the heating chamber S3.
A second solution pipe row L2, which is continuous with the front solution pipe row L1-2 and is arranged outside the side solution pipe row L1-1 and in which a number of solution pipes 20 are densely arranged, is provided. 2 solution line L2
Between the heating chamber outlet 2 and the side solution pipe row L1-1.
An exhaust gas passage R1 communicating with the first exhaust gas passage R1 may be formed.
A large number of solution pipes 20 are densely arranged at an outer position which is continuous with the front end of the side solution pipe row L1-1 in the solution pipe row L1 and is separated from the side solution pipe row L1-1 by a predetermined distance. A third solution pipe row L3 is provided between the third solution pipe row L3 and the second solution pipe row L2 that is continuous with the front solution pipe row L1-1 in the first solution pipe row L1. An exhaust gas passage R1 communicating with the heating chamber outlet 21 may be formed, or a first exhaust gas passage R1 formed between the second solution pipe row L2 and the third solution pipe row L3 may be formed in the first solution pipe row L1. Solution line L
1-1 and a side solution pipe line L in the first solution pipe line L1 while communicating with a first exhaust gas outlet 22 provided outside.
1-1 is connected to the continuous part of the third solution line L3.
An exhaust gas outlet 24 may be provided to form a second exhaust gas passage R2 communicating with the second exhaust gas outlet 24 between the side solution pipe row L1-1 and the third solution pipe row L3.

A concentrated solution return passage 12 may be provided between the concentrated solution chamber S2 and the diluted solution chamber S1 to return the concentrated solution in the concentrated solution chamber S2 to the diluted solution chamber S1.

[0013]

According to the present invention, since the generator main body 1 is formed in a horizontally long box shape, when the generator main body 1 is disposed, for example, outside the constituent unit U constituting the absorption refrigerator, the generator main body 1 is constituted. It can be reasonably arranged along the outer surface of the unit U.

Moreover, according to the present invention, the generator body 1
A number of solution tubes 20 communicating the concentrated solution chamber S2 and the dilute solution chamber S1 formed above and below in the generator main body 1 are densely arranged, and the heating chamber S3 and the heating chamber S3 are arranged by the solution tube row. By defining an exhaust gas passage R1 communicating with the chamber S3, the dilute solution chamber S1 can be
The dilute solution flowing to zero can be efficiently heated by the solution tube 20, and the generation efficiency of the refrigerant vapor increases.

Further, according to the present invention, a number of solution pipes 20 communicating between the concentrated solution chamber S2 and the dilute solution chamber S1 formed above and below the generator body 1 are densely arranged in the generator body 1. While arranging, the solution pipe row defines a heating chamber S3 and an exhaust gas passage R1 communicating with the heating chamber S3, and a combustor 2 is provided on one side in the length direction of the generator main body 1, By using the heating chamber S3 as a combustion chamber of the combustor 2, the dilute solution flowing from the dilute solution chamber S1 to the solution pipe 20 with each of the solution pipes 20 facing the combustion flame burning in the heating chamber S3. Can be heated, the dilute solution can be more efficiently heated by the solution pipe 20, and the generation efficiency of the refrigerant vapor can be further increased.

The solution tube 20 is formed as a straight tube, and a spacer 20 is provided between the solution tubes 20 adjacent to each other.
By interposing a, the flow of the dilute solution flowing through the solution tube can be made smooth, scale can be prevented from being attached on the way, and the combustion gas can be bypassed between the solution tubes 20 adjacent to each other. Can be prevented. Further, of the first solution line L1 constituting the heating chamber S3, the combustor 2
By displacing the central part of the heat load opposed to the flame port 17 where the heat load is high in the direction away from the flame port 17 with respect to both sides, the solution pipe constituting the central part is locally heated more than necessary and the solution is concentrated. It can be prevented from being done too much.

Further, by forming the bottom of the heating chamber facing the heating chamber S3 in the partition plate 6 forming the diluted solution chamber S1 into a boat bottom shape in which the central portion is recessed downward, the combustion gas is supplied to the heating chamber S3. It can be smoothly guided to the exhaust gas passage without collecting at the bottom.

On both sides of the partition plate 6 defining the dilute solution chamber S1 in the width direction, of the solution tubes 20 standing from the partition plate 6, the outside of the solution tube 20 located at the outermost side in the width direction is By inclining downward toward the outside, the dilute solution flowing into the dilute solution chamber S1 can be smoothly guided to the solution pipe 20 via the inclined surface, and overheating due to stagnation can be prevented. .

A first solution tube row L defining a heating chamber S3
An inlet header 30 connected to the diluted solution inlet 7 is provided below the opening for the diluted solution chamber S1, and the header 30 is connected to the opening for the diluted solution chamber S1 of the first solution tube row L1. By providing the corresponding nozzle 31, a low-temperature dilute solution introduced from the dilute solution inlet 7 is preferentially supplied to the first solution pipe row L1 having a large heat load facing the combustion flame of the heating chamber. Therefore, it is possible to prevent the dilute solution from being overheated in the solution tubes 20 forming the first solution tube row L1, and to prevent the solution tubes 20 from being thermally deformed.

The first solution line L1 faces the front end of the side solution line L1-1 which defines the side of the heating chamber S3 in the first solution line L1 and the flame opening 17 of the combustor 2. Tube row L
1, a heating chamber outlet 21 is formed between the heating chamber S3 and a front solution tube row L1-2 that defines the front of the heating chamber S3.
A second solution pipe row L2, which is continuous with the front solution pipe row L1-2 and is arranged outside the side solution pipe row L1-1 and in which a number of solution pipes 20 are densely arranged, is provided. 2 solution line L2
Between the heating chamber outlet 2 and the side solution pipe row L1-1.
The first and second exhaust gas passages R1 communicate with the exhaust gas passage R1 through the combustion outlet 21 and the combustion gas supplied to the exhaust gas passage R1 through the combustion outlet 21. The dilute solution passing through the solution tubes 20 constituting the solution tube rows L1 and L2 can be efficiently heated.

The side solution pipe row L1-1 is connected to the front end of the side solution pipe row L1-1 in the first solution pipe row L1.
A third solution pipe row L3 in which a number of solution pipes 20 are densely arranged is further provided at an outer position spaced apart from the first solution pipe 1-1 by a predetermined distance, and the third solution pipe row L3 and the first solution pipe A second solution tube row L continuous with the front solution pipe row L1-1 in the row L1
2, a first exhaust gas passage R1 communicating with the heating chamber outlet 21 is formed, so that the side solution pipe row L1-1 defining the heating chamber S3 is a combustion gas passing through the exhaust gas passage R1. Can be prevented from being heated, the dilute solution passing through the side part solution tube row L1-1 is overheated,
It is possible to prevent the solution tubes 20 of the side solution tube row L1-1 from being thermally deformed.

The first exhaust gas passage R1 communicates with a first exhaust gas outlet 22 provided outside the front solution line L1-1 in the first solution line L1, and the side solution line L1-1. In order to effectively use the gap between the third solution pipe row L3 and the third solution pipe row L3, the front of the side solution pipe row L1-1 in the first solution pipe row L1 and the third solution pipe row L3 are connected. A second exhaust gas outlet 24 is provided in the section, and the side solution pipe row L1-
The second exhaust gas outlet 24 is located between the first solution line L3 and the third solution line L3.
By forming the second exhaust gas passage R2 communicating with the
It is possible to prevent the dilute solution passing through the side solution pipe row L1-1 from being overheated and to prevent the solution pipe 20 from being thermally deformed, and to heat the dilute solution more efficiently, thereby reducing the refrigerant vapor generation efficiency. Can be further increased.

Further, a concentrated solution return passage 12 communicating with the concentrated solution chamber S2 is provided, and the return passage 12 is opened to the diluted solution chamber S1, so that a part of the concentrated solution in the concentrated solution chamber S2 is removed. Since the solution is returned to the dilute solution chamber S1, even if the amount of the solution supplied into the dilute solution chamber S1 decreases, the flow rate of each of the solution tubes 20 can be compensated to a certain level or more. Overheating can be prevented.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The generator shown in FIGS. 1 to 5 basically comprises a generator body 1 and a combustor 2 provided on one side of the generator body 1.
As shown schematically in FIG. 10, the generator main body 1 is provided on an outer surface of a box-shaped component unit U including an evaporator U1 and an absorber U2 constituting an absorption refrigerator. In order to be able to be arranged rationally along a small space, it is formed in a horizontally long box shape, and a horizontally long cylindrical separator 3 is provided above the generator body 1,
The internal space of the separator 3 and the upper space in the generator main body 1 are communicated with each other via a communication pipe 4, and upper and lower partition plates 5 and 6 are provided in the upper and lower parts in the generator main body 1, respectively. A lower space partitioned by the lower partition plate 6 in the generator main body 1 is a dilute solution chamber S1, and an upper space partitioned by the upper partition plate 5 in the generator main body 1 is a concentrated solution chamber S2. In the lower part of the generator main body 1, a dilute solution inlet 7 opening to the dilute solution chamber S1 is provided.

The upper part of the separator 3 is provided with a refrigerant outlet 8 opening to the concentrated solution chamber S2, and the lower part is provided with a concentrated solution outlet 9 also opened to the concentrated solution chamber S2. An eliminator 10 is provided in the upper part of the separator 3, and a connecting pipe 4 and the concentrated solution outlet 9 are provided in the lower part of the separator 3.
The vertical walls 11 for maintaining the liquid level of the concentrated solution flowing into the inside are provided, respectively, and the separation from the concentrated solution chamber S2 is performed between the lower part of the separator 3 and the lower part of the generator main body 1. A concentrated solution return passage 12 for returning the concentrated solution flowing into the vessel 3 to the dilute solution chamber S1 is provided.
The return passage 12 may be opened in the concentrated solution chamber S2.

On the other hand, the combustor 2 comprises a blower 15 and a gas burner 16, and a flame 17 of the gas burner 16 is connected to the upper and lower partition plates 5 in the generator main body 1.
An opening is provided between the burners 16 so that the combustion flame of the burner 16 blows out in the longitudinal direction of the generator main body 1 between the partition plates 5 and 6. The generator body 1
A large number of solution pipes 2 are
0 are densely arranged in parallel with each other, and the lower end opening of the solution tube 20 communicates with the dilute solution chamber S1 and the upper end opening communicates with the concentrated solution chamber S2, respectively. Accordingly, a heating chamber S3 serving as a combustion chamber of the combustor 2 and an exhaust gas passage communicating with the heating chamber S3 are defined in a space partitioned between the upper and lower partition plates 5 and 6 in the generator main body 1. Has formed.

That is, in the embodiment shown in FIGS. 1 to 5, the side solution pipe row L1-1 which defines both sides of the heating chamber S3.
And a first solution pipe row L1 having a U-shape in plan view, comprising a front solution pipe row L1-2 facing the flame port 17 of the gas burner 16 and defining a front portion of the heating chamber S3. The heating chamber S3 is formed between the upper and lower partition plates 5 and 6, and the front end portions of the both-side solution pipe rows L1-1 and the front solution pipe rows L1 are formed.
-2 is provided between the heating chamber outlet 21 and
Also, a number of solution pipes 2 are provided outside the side solution pipe row L1-1.
0 is densely arranged, a second solution pipe row L2 is provided, and the front end of the second solution pipe row L2 is connected to both ends of the front solution pipe row L1-2. And a first solution communicating between the heating chamber outlet 21 and the side solution pipe row L1-1.
While forming the exhaust gas passage R1, the front solution pipe row L on the side wall of the generator body 1 and in the first solution pipe row L1
1-2, a first exhaust gas outlet 22 is provided outside the first exhaust gas outlet 22.
The first exhaust gas passage R1 communicates with the exhaust gas outlet 22.

As shown in FIG. 4, the solution pipes 20 constituting the respective solution tube rows are assembled to the upper and lower partition plates 5 and 6, respectively. A large number of circular insertion holes 23 are formed at the respective positions, while the solution pipe 20 is formed in order to reduce the flow resistance of the solution.
Is formed from a straight pipe having a circular cross section, and both ends in the length direction of the solution pipe 20 are inserted into the insertion holes 23, and the solution pipe 2 is welded.
0 are fixed to the upper and lower partitioning plates 5 and 6 at the longitudinal direction, and between the outer peripheral surfaces of the solution tubes 20 adjacent to each other as shown in FIG. The spacer 20a is interposed. The spacer 20a may have a rectangular cross section.

In the embodiment shown in FIG. 3, in order to prevent the combustion gas from staying at the corners of the bottom and ceiling of the heating chamber S3, as shown in FIG. A portion of the upper partition plate 5 defining the upper portion facing the heating chamber S3 is curvedly recessed upward and the heating of the lower partition plate 6 defining the bottom of the heating chamber SS is performed. The part facing the room S3 is
While the boat bottom shape is concavely recessed downward,
An inclined wall portion 61 is provided on both sides in the width direction of the lower partition plate 6 to incline downward toward the outside of the second solution pipe row L2, and the dilute solution is formed by the inclined wall portion 61. The dilute solution flowing into the chamber S1 can be guided without staying in each solution tube 20 constituting the second solution tube row L2.

In the figure, reference numeral 62 denotes a liquid level controller attached to the separator 3.

Next, the operation of the generator having the above configuration will be described.

The dilute solution flowing into the dilute solution chamber S1 from the dilute solution inlet 7 flows into the concentrated solution chamber S2 through the solution tubes 20 forming the first and second solution tube rows L1 and L2. However, the dilute solution passing through the solution pipes 20 constituting the first solution pipe row L1 is generated by the combustion flame of the gas burner and the second solution pipe row L2.
Is heated by the combustion gas passing through the first exhaust gas passage R1. The refrigerant vapor generated by heating the dilute solution flows from the concentrated solution chamber S2 to the refrigerant outlet 8
The concentrated solution which is sent to the condenser constituting the absorption refrigerator through the
The concentrated solution which has accumulated in the vertical wall 11 and overflows from the vertical wall 11 flows from the concentrated solution outlet 9 into an absorber U which constitutes an absorption refrigerator.
2 and a part of the concentrated solution is returned to the diluted solution chamber S1 through the concentrated solution return passage 12, and is again passed through the solution tube 20 together with the diluted solution flowing into the diluted solution chamber S1. It is heated.

Thus, the dilute solution flowing into the both sides in the width direction in the dilute solution chamber S1 does not stay in the both sides in the width direction in the chamber S1, and the second solution is guided by the inclined wall portion 61. The solution flows smoothly into each solution tube 20 constituting the solution tube row L2, and
Since 0 is composed of a straight pipe, the dilute solution flows smoothly without stagnation even in the solution pipe 20, preventing overheating due to stagnation and preventing scale from adhering. I can do it.

The combustion gas passing through the first exhaust gas passage R1 is discharged from the first exhaust gas outlet 22 to the outside.

In the generator of the above embodiment, the heating chamber S facing the flame of the gas burner 16 is used.
The third solution tube row L3 which is located outside the side solution tube line L1-1 of the first solution tube line L1 due to a large heat load of the first solution tube line L1 defining the third solution tube line L1, The third solution tube row L
Since the heat load gradually decreases as the position of the second solution line L2 located outside of the third solution line 3 increases, an inlet header 30 is provided at the dilute solution inlet 7 as shown in FIG. It is preferable that the dilute solution having a low temperature be preferentially introduced into the solution tubes 20 constituting the first solution tube row L1.

That is, the inlet header 30 shown in FIG. 6 is connected to the first solution tube row L in the dilute solution chamber S1.
1 and the front solution line L1
-2, the header 30 is connected to the diluted solution inlet 7 along with the diluted solution chamber S1 side opening of each solution tube 20 constituting the central portion of the solution tube 20, and the both-side solution tube row L1- No. 1 and nozzles 31 are formed in the respective solution tubes 20 constituting the central portion of the front solution tube row L1-2 at portions opposed to the dilute solution chamber S1 side opening, and flow out from the respective nozzles 31 of the inlet header 30. The diluted solution to be supplied is mainly supplied to each solution pipe 20 of the first solution pipe row L1 corresponding to each nozzle 31.

By providing the header 30 in this manner, the dilute solution flowing into the inlet header 30 from the dilute solution inlet 7 is supplied from the respective nozzles 31 to the first solution pipe which first defines the heating chamber S3. Each solution tube 2 constituting the row L1
0, and the dilute solution that does not flow into the solution tube 20 travels through the dilute solution chamber S1 to the second solution.
The dilute solution flowing into the solution pipes 20 constituting the second solution pipe row L2 sequentially flows into the respective solution pipes 20 constituting the solution pipe row L3. The diluted solution chamber S1 until it flows into the chamber
While being heated while passing through the inside, the dilute solution flowing directly from each nozzle 31 into the solution pipes 20 constituting the first solution pipe row L1 flows into the dilute solution chamber S1.
In the solution tubes 20 constituting the first solution tube row L1 facing the combustion flame of the gas burner 16, the dilute solution with the lowest temperature passes. There is no possibility that the concentration of the dilute solution in the solution tubes 20 constituting the first solution tube row L1 becomes excessive, and the solution tubes 20 constituting the first solution tube line L1 can be prevented from being overheated. is there.

The nozzle 31 may be opened toward the opening of each solution tube 20 as shown in FIG.
Alternatively, as shown in FIG. 7, an opening may be made toward the bottom wall of the dilute solution chamber S1 at a position corresponding to the opening of the solution tube 20.

The arrangement of the solution tubes 20 may be as shown in FIG. 8 other than the arrangement as shown in FIG.

Next, the generator shown in FIG. 8 will be described.

In the generator shown in FIG. 8, the outer side of the first solution line L1 is continuous with the front end of the side solution line L1-1 and is separated from the side solution line L1-1 by a predetermined distance. At a position, a third solution pipe row L3 in which a number of solution pipes 20 are densely arranged is provided in parallel, and this third solution pipe row L3 and the first
A first exhaust gas passage R1 communicating with the heating chamber outlet 21 is formed between the solution tube line L1 and a second solution tube line L2 that is continuous with the front solution tube line L1-1.
To the front solution line L1- in the first solution line L1.
2 is connected to a first exhaust gas outlet 22 provided outside. The side solution pipe row L1-1 and the third solution pipe row L
3, a second exhaust gas passage R2 communicating with the first exhaust gas passage R1 is formed, and a front part of the side solution tube line L1-1 in the first solution tube line L1 and the third solution tube line are formed. A second exhaust gas outlet 24 communicating with the second exhaust gas passage R2 is provided in a continuous portion with L3.

In the above generator, as shown in FIG. 8, the heat load is located at the front portion of the heating chamber S3 facing the flame opening 17 of the gas burner 16 and facing the high temperature portion of the combustion flame. A central portion of the front solution tube row L1-2, which becomes higher, facing the burner port 17 is arranged in a curved shape in a direction away from the burner port 17 with respect to both side portions, and the first solution pipe train L1-2. The front end portion of the side solution pipe row L1-1 in L1 is displaced toward the second solution pipe row L2 to keep it away from the combustion flame, so that overheating of the solution and thermal deformation of the solution pipe 20 do not occur. ing.

When the above-mentioned inlet header 30 is used in the above-mentioned generator, the inlet header 30 is connected to both side solution pipe rows L1-1 in the first solution pipe row L1 as shown in FIG. The inlet header 30 is formed in a plan view frame shape with a bulge at the front so as to be disposed along the opening of the solution tube S1 of the solution tube row L1-2 on the dilute solution chamber S1 side. To the diluted solution chamber S
1, the header S1 is connected to the dilute solution inlet 7, and each of the solutions constituting the central portion of the both-side solution pipe row L1-1 and the front solution pipe row L1-2. Tube 2
0, a nozzle 31 is formed at a position facing the diluted solution chamber S1 side opening, and the inlet header 3 is formed.
The diluted solution flowing out from each nozzle 31
Is mainly supplied to each of the solution tubes 20 of the corresponding first solution tube row L1.

In the generator shown in FIG. 8, the combustion gas generated in the heating chamber S3 passes through the first exhaust gas passage R1 from the combustion outlet 21 and passes through the first exhaust gas passage R1.
The exhaust gas is discharged from the exhaust gas outlet 22 to the outside, and a part of the gas flows from the first exhaust gas passage R1 to the second exhaust gas passage R2 and is discharged to the outside from the second exhaust gas outlet 24. The solution pipes 20 constituting the second and third solution pipe rows L2 and L3 pass through the second solution pipe row L3 and the third solution pipe row L3 as the combustion gas passes through the second exhaust gas passage R1. The dilute solution passing through each solution pipe 20 constituting the side solution pipe row L1-1 in the first solution pipe row L1 is heated.
The temperature of the combustion gas passing through the first exhaust gas passage R1 is lower than that of the combustion gas passing through the first exhaust gas passage R1. And the low temperature dilute solution flowing from the dilute solution inlet 7 into the inlet header 30 firstly forms the first heating chamber S3.
Each of the solution pipes 20 constituting the solution pipe row L1 has the nozzle 31
Thus, the dilute solution passing through the first solution line L1 may be overheated, or the solution line 2 of the side solution line L1-1 may be overheated.
0 can be more effectively prevented from being thermally deformed.

In the above embodiment, the combustor 2 is provided on one side of the generator main body 1, and the heating chamber S3 is
However, for example, high-temperature (300 ° C. to 1000 ° C.) exhaust gas generated in a boiler in a factory or the like can be used as a heat source of the generator according to the present invention. When used, the combustor 2 may be omitted, and an exhaust gas pipe may be connected to the generator body 1 to supply high-temperature exhaust gas to the heating chamber S3.

The exhaust gas pipe is connected to the generator body 1
When the combustion chamber 2 is connected to the combustion chamber 2, the combustion chamber 2 can be omitted, and the heating chamber S3 may have a narrow passage area enough for exhaust gas to flow therethrough. As compared with the case where the heating chamber is used as a combustion chamber of the combustor 2, the cross-sectional area of the heating chamber can be set to a gas passage cross-sectional area corresponding to the exhaust gas flow rate, and the generator main body 1 can be reduced in size.

When the exhaust gas pipe is connected to the generator body 1, the number of bypasses in the exhaust gas passage may be determined in accordance with the temperature of the exhaust gas and the amount of heat recovered, and the exhaust gas is transferred from the heating chamber S3. For example, two passes, three passes, or four passes can be freely performed before reaching the exhaust gas outlet.

[0048]

As described above, according to the present invention, the generator main body 1 constituting the outer shape of the generator is formed in a horizontally long box shape.
For example, as shown in FIG. 10, a box-shaped constituent unit U composed of an evaporator U1 and an absorber U2 constituting an absorption refrigerator.
When the generator main body 1 is disposed outside the generator unit, the generator main body 1 can be rationally disposed along the outer surface of the constituent unit without generating a dead space between the generator main body and the constituent unit. You can.

Further, according to the present invention, the generator body 1
A number of solution tubes 20 communicating the concentrated solution chamber S2 and the dilute solution chamber S1 formed above and below in the generator main body 1 are densely arranged, and the heating chamber S3 and the heating chamber S3 are arranged by the solution tube row. By defining an exhaust gas passage R1 communicating with the chamber S3, the dilute solution chamber S1 can be
Since the dilute solution flowing to zero can be efficiently heated by the solution tube 20 and the generation efficiency of the refrigerant vapor can be increased, the generator can be downsized and the amount of solution used can be reduced. .

Further, according to the present invention, the arranging device main body 1
A number of solution tubes 20 communicating the concentrated solution chamber S2 and the diluted solution chamber S1 formed above and below in the generator main body 1 are densely arranged, and a heating chamber S3 is formed by the solution tube row.
And a flue gas passage R1 arranged in the heating chamber S3, and a combustor 2 is provided on one side in the longitudinal direction of the generator main body 1 so that the heating chamber S3 serves as a combustion chamber of the combustor 2. Therefore, each of the solution tubes 20 faces the flame burning in the heating chamber S3, and can heat the dilute solution flowing in the solution tube 20.
Thus, the dilute solution flowing from 1 to the solution tube 20 can be efficiently heated. As a result, the generation efficiency of the refrigerant vapor can be sufficiently increased, so that the generator can be made smaller and the amount of the solution used can be reduced.

Further, by forming the solution tube 20 from a straight tube and by interposing a spacer between the solution tubes 20 adjacent to each other, the flow of the dilute solution flowing through the solution tube can be made smooth. Thus, it is possible to prevent the scale from adhering to the pipe, and to surely prevent the combustion gas from bypassing between the solution pipes 20 adjacent to each other. In addition, by displacing the central portion of the first solution pipe row L1 constituting the heating chamber S3 where the heat load facing the flame port 17 of the combustor 2 becomes higher with respect to both sides in a direction away from the flame port 17, It is possible to prevent the solution tube constituting the central portion from being locally heated more than necessary and the solution from being excessively concentrated.

Further, the bottom of the heating chamber facing the heating chamber S3 is formed in a boat bottom shape in which the central portion is recessed downward by the partition plate 6 forming the diluted solution chamber S1, so that the combustion gas is supplied to the heating chamber S3. It can be smoothly guided to the exhaust gas passage without collecting at the bottom.

Further, on both sides in the width direction of the partition plate 6 defining the dilute solution chamber S1, the outside of the solution tube 20 located at the outermost side in the width direction among the solution tubes 20 standing from the partition plate 6 is By inclining downward toward the outside, the dilute solution flowing into the dilute solution chamber can be smoothly guided to the solution tube 20 through the inclined surface, and overheating due to stagnation can be prevented. .

The first solution tube row L defining the heating chamber S3
In the case where an inlet header 30 connected to the diluted solution inlet 7 is provided below the opening for the diluted solution chamber S1, the header 30 particularly has an opening for the diluted solution chamber S1 of the first solution line L1. Is provided, the low-temperature dilute solution introduced from the dilute solution inlet 7 is preferentially supplied to the first solution pipe row L1 having a large heat load facing the flame of the heating chamber. Can do
Therefore, overheating of the dilute solution in the solution tubes 20 constituting the first solution tube row L1 can be more effectively prevented,
The thermal deformation of the solution tube 20 can be more effectively prevented.

Further, the first solution line L1 faces the front end of the side solution line L1-1 defining the side of the heating chamber S3 in the first solution line L1 and the flame opening 17 of the combustor 2. Tube row L
1, a heating chamber outlet 21 is formed between the heating chamber S3 and a front solution tube row L1-2 that defines the front of the heating chamber S3.
A second solution pipe row L2, which is continuous with the front solution pipe row L1-2 and is arranged outside the side solution pipe row L1-1 and in which a number of solution pipes 20 are densely arranged, is provided. 2 solution line L2
Between the heating chamber outlet 2 and the side solution pipe row L1-1.
The first and second exhaust gas passages R1 communicate with the exhaust gas passage R1 through the combustion outlet 21 and the combustion gas supplied to the exhaust gas passage R1 through the combustion outlet 21. The dilute solution passing through the solution tubes 20 constituting the solution tube rows L1 and L2 can be efficiently heated,
The generation efficiency of the refrigerant vapor is improved.

The side solution pipe row L1-1 is connected to the front end of the side solution pipe row L1-1 in the first solution pipe row L1.
A third solution pipe row L3 in which a number of solution pipes 20 are densely arranged is further provided at an outer position spaced apart from the first solution pipe 1-1 by a predetermined distance, and the third solution pipe row L3 and the first solution pipe are provided. A second solution tube row L continuous with the front solution pipe row L1-1 in the row L1
2, a first exhaust gas passage R1 communicating with the heating chamber outlet 21 is formed, so that the side solution pipe row L1-1 defining the heating chamber S3 is formed by the combustion gas passing through the exhaust gas passage. Since the heating can be prevented, overheating of the dilute solution passing through the side solution pipe row L1-1 and thermal deformation of the solution pipe 20 constituting the side solution pipe row L1-1 are effectively prevented. I can do it.

The first exhaust gas passage R1 is communicated with a first exhaust gas outlet 22 provided outside the front solution line L1-1 in the first solution line L1, and is connected to the first solution line L1. A second exhaust gas outlet 24 is provided at a continuous portion between the front part of the partial solution line L1-1 and the third solution line L3,
A second exhaust gas passage R2 communicating with the second exhaust gas outlet 24 between the side solution pipe row L1-1 and the third solution pipe row L3.
Is formed, the gap between the side solution pipe row L1-1 and the third solution pipe row L3 can be effectively utilized, while rarely passing through the side solution pipe row L1-1. Since overheating of the solution and overheating of the solution tube 20 can be reduced, the heating of the diluted solution can be performed more efficiently, and the generation efficiency of the refrigerant vapor can be further increased.

Further, by providing a concentrated solution return passage 12 communicating with the concentrated solution chamber S2 and opening the return passage 12 to the diluted solution chamber S1, a part of the concentrated solution in the concentrated solution chamber S2 can be removed. Since the solution is directly returned to the dilute solution chamber S1, even if the amount of the solution supplied into the dilute solution chamber S1 decreases, the flow rate of each of the solution tubes 20 can be compensated to a certain value or more. This can prevent overheating of the solution.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing one embodiment of a generator according to the present invention.

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is a sectional view taken along line YY in FIG. 1;

FIG. 4 is an enlarged sectional view of a main part of the generator.

FIG. 5 is a sectional view taken along line ZZ in FIG. 4;

FIG. 6 is an enlarged sectional view of a main part showing an example in which an inlet header is provided in a dilute solution chamber.

FIG. 7 is an enlarged sectional view of a waist showing an application example of the entrance header.

FIG. 8 is a cross-sectional view showing another embodiment of the generator according to the present invention.

FIG. 9 is a schematic plan view of an inlet chamber.

FIG. 10 is an explanatory view schematically showing a state in which a generator is arranged on a side of a constituent unit of an absorption refrigerator.

FIG. 11 is a schematic explanatory view showing an example of a conventional generator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Generator main body 2 Combustor 6 Lower partition plate (partition plate) 7 Dilute solution inlet 8 Refrigerant outlet 9 Concentrated solution outlet 12 Concentrated solution return passage 20 Solution pipe 20a Spacer 21 Heating chamber outlet 22 First exhaust gas outlet 24 Second exhaust gas outlet 30 inlet header 31 nozzle S1 dilute solution chamber S2 concentrated solution chamber S3 heating chamber L1 first solution pipe row L1-1 side solution pipe row L1-2 front solution pipe row L2 second solution pipe row L3 third solution pipe row R1 First exhaust gas passage R2 Second exhaust gas passage

Claims (12)

(57) [Claims] 1. A dilute solution chamber S1 having a horizontally elongated box-shaped generator main body 1 and a dilute solution inlet 7 opened at a lower portion of the generator main body 1, and a number of solution pipes 20 communicating with the chamber S1. Are densely arranged to define a heating chamber S3 and an exhaust gas passage L1 communicating with the heating chamber S3, and a concentrated solution chamber S2 in which the respective solution pipes 20 are opened is formed above the solution pipe row. Then, the concentrated solution chamber S2
A concentrated solution outlet 9 and a refrigerant outlet 8 are connected to each other. 2. A generator body 1 having a horizontally long box shape and a combustor 2 provided on one side in the longitudinal direction of the generator body 1, and a dilute solution inlet 7 is opened at a lower portion of the generator body 1. A diluted solution chamber S1 is provided, and a number of solution tubes 20 communicating with the chamber S1 are densely arranged to form a heating chamber S3 serving as a combustion chamber of the combustor 2 and an exhaust gas passage R1 communicating with the heating chamber S3. On the other hand, a concentrated solution chamber S2 in which the respective solution tubes 20 are opened is formed above the solution tube row, and the concentrated solution outlet 9 and the refrigerant outlet 8 communicate with the concentrated solution chamber S2. A generator for an absorption refrigerator. 3. The generator of an absorption refrigerator according to claim 1, wherein the solution pipes 20 are straight pipes, and spacers 20a are interposed between the adjacent solution pipes 20. 4. A first solution tube row L1 constituting a heating chamber S3.
Of the front solution line L facing the flame port 17 of the combustor 2
3. The generator of the absorption refrigerator according to claim 1, wherein 1-2 is displaced in a direction away from the flame port 17 at a center portion facing the flame port 17 with respect to both sides. 5. The absorption type according to claim 1, wherein the partition plate 6 forming the dilute solution chamber S1 has a bottom portion of the heating chamber facing the heating chamber S3, the bottom portion of which is recessed downward at the center. Refrigerator generator. 6. The outer side of the solution pipe 20 located at the outermost side in the width direction among the solution pipes 20 erected from the partition plate 6 on both sides in the width direction of the partition plate 6, and is inclined downward outward. The generator of the absorption refrigerator according to claim 6, wherein 7. A first solution tube row L1 defining a heating chamber S3.
The generator of the absorption refrigerator according to claim 1 or 2, further comprising an inlet header (30) connected to the diluted solution inlet (7) below the opening for the diluted solution chamber (S1). 8. The inlet header 30 has a plurality of nozzles 31, each of which corresponds to an opening of the first solution pipe row L1 defining the heating chamber S3 with respect to the dilute solution chamber S1. The generator of the absorption refrigerator described. 9. The heating chamber S in a first solution tube row L1.
A front end of a side solution tube row L1-1 defining a side of the third solution tube;
A front solution pipe row L facing the flame port 17 of the combustor 2 and defining a front part of the heating chamber S3 in the first solution pipe row L1.
1-2, a heating chamber outlet 21 is formed, and a large number of solution pipes 20 are densely connected to the front solution pipe row L1-2 and outside the side solution pipe row L1-1. An array of second solution pipes L2 is provided, and an exhaust gas passage R1 communicating with the heating chamber outlet 21 is formed between the second solution pipe row L2 and the side solution pipe row L1-1. Claim 1 or 2
The generator of the absorption refrigerator described. 10. The side solution tube row L1-continuous with the front end of the side solution tube row L1-1 in the first solution tube row L1.
A number of solution tubes 20
Are arranged densely, and a third solution pipe row L3 and a second solution pipe row continuous with the front solution pipe row L1-1 in the first solution pipe row L1 are provided. The generator of the absorption refrigerator according to claim 9, wherein an exhaust gas passage (R1) communicating with the heating chamber outlet (21) is formed between the exhaust gas passage (R2) and the heating chamber outlet (21). 11. A second solution line L2 and a third solution line L3.
A first exhaust gas passage R1 formed between the first solution pipe line L1 and the first solution pipe line L1 is provided outside the front solution pipe line L1-1.
While communicating with the exhaust gas outlet 22, a second exhaust gas outlet 24 is provided at a continuous portion between the front part of the side solution pipe line L1-1 in the first solution pipe row L1 and the third solution pipe row L3,
A second exhaust gas passage R2 communicating with the second exhaust gas outlet 24 between the side solution pipe row L1-1 and the third solution pipe row L3.
The generator of the absorption refrigerator according to claim 10, wherein: 12. The generator of the absorption refrigerator according to claim 1, further comprising a concentrated solution return passage connected to the concentrated solution chamber, wherein the return passage is opened to the diluted solution chamber.