JP4090178B2 - High temperature regenerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-temperature regenerator for an absorption refrigerator.
[0002]
[Prior art]
As this type of high-temperature regenerator, as described in, for example, Japanese Patent Laid-Open No. 10-197100, a space 3 between the inner shell 1 and the outer shell 2 and a pipe that penetrates the inner shell 1 vertically. The absorbing liquid injected into the numerous liquid pipes 4 is heated by the flame 6 generated inside the inner shell 1 by the surface combustion burner 5 and its combustion gas, and the refrigerant absorbed in the absorbing liquid is evaporated and separated. The thing of the structure which raised the density | concentration of absorption liquid and was made to reproduce | regenerate absorption liquid is known.
[0003]
And in the high temperature regenerator of such a structure, while using the surface combustion burner 5 which equips the front of the mixing chamber 8 with the surface combustion plate 7 in which the flame 6 is formed shortly, while aiming at size reduction of an apparatus, Combustion is completed in a short period of time to suppress generation of NOx.
[0004]
[Problems to be solved by the invention]
In the case of the high-temperature regenerator having the above configuration, the combustible gas and the combustion air are mixed in the mixing chamber, and the mixed gas passes through countless small holes of the surface combustion plate and burns on the surface side. If the air-fuel mixture leaks due to cracks or misalignment in the surface combustion plate that is subjected to thermal stress, there is a risk of a backfire and explosion to the mixing chamber, causing a major accident.
[0005]
For this reason, the surface combustion plate to be mounted on the surface combustion burner must be made so that it will not crack even if it is repeatedly subjected to thermal stress, but the surface combustion plate, which is often made of ceramics, Since there is a limit to the increase in size, there is a problem that it is difficult to increase the capacity of the high-temperature regenerator, and therefore the capacity of the absorption refrigerator cannot be increased.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is directed to a burner, an inner shell in which a flame of the burner is formed, a combustion gas passes through, an outer shell that contains an absorbent between the inner shell, and an inner shell A plurality of double cans that are piped through the pipe and have a liquid tube group that allows the absorption liquid to pass therethrough are juxtaposed in a horizontal plane, and communicate with the space between the inner shell and the outer shell of each double can. A high-temperature regenerator having a first configuration in which an inlet header for absorbing liquid and an outlet header are provided, and an exhaust header that communicates the inner end portions of the non-flame forming side of each inner shell is provided;
[0007]
In the high-temperature regenerator having the first configuration, the space between the inner shell and the outer shell of each double can body is lower than the liquid outlet of the outlet header for absorbing liquid, and the inlet header and outlet for absorbing liquid A high-temperature regenerator having a second configuration that communicates with other than the header;
[0008]
In the high temperature regenerator of the first or second configuration, the absorbing liquid flowing into the high temperature regenerator based on the output information of the absorbing liquid detecting means provided in the outlet header for absorbing liquid or any one of the double cans A high temperature regenerator of a third configuration that controls the amount of
[0009]
In the high temperature regenerator of any one of the first to third configurations, a high temperature regenerator of the fourth configuration configured to control the combustion amount of the burner attached to each double can body to the same amount;
Is to provide.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. In order to facilitate understanding, in these drawings, parts having the same functions as those described with reference to FIG.
[0011]
The illustrated high temperature regenerator 100 includes a plurality of, for example, two outer shells 2 provided with an inner shell 1 in the same horizontal plane, and a surface combustion burner 5 at one end of each same side. It was installed facing the inside. That is, two double cans 9 similar to the conventional high-temperature regenerator described in FIG. 2 are arranged side by side.
[0012]
One liquid inlet header 10 shared by the two double can bodies 9 is installed below the double can body 9 on the side where the surface combustion burner 5 is installed, and the liquid inlet header 10 has an absorption (not shown). Absorbed liquid whose absorption liquid concentration has been reduced by absorbing refrigerant from the absorber of the refrigerator is forcibly injected from the injection port 11 by the absorption liquid pump, and below the space 3 of each of the double can bodies 9 via the liquid inlet header 10. The gas-liquid which flows into the side substantially evenly, and the absorbed liquid which flows in is in each liquid pipe | tube 4 (not shown in FIG. 1) of each double can body 9, is heated, boils, and rises vigorously Each liquid pipe 4 is entered by the drawing action of the mixed fluid and is continuously heated through the respective pipe walls of the liquid pipe 4.
[0013]
In addition, a single liquid outlet header 12 shared by the two double can bodies 9 is installed in the middle portion of the double can body 9 on the side where the surface combustion burner 5 is not installed. The absorption liquid which is forcedly injected into the space 3 of each double can 9 and heated via the pipe wall of each liquid pipe 4 to evaporate and separate the refrigerant and the concentration of the absorption liquid is increased. It merges at the outlet header 12 and is configured to be sent out toward a low-temperature regenerator of an absorption refrigerator (not shown). The liquid outlet 12A of the liquid outlet header 12 is installed at a position higher than the upper end of the inner shell 1 by a predetermined dimension, and the absorption liquid is higher than the upper end of the inner shell 1, that is, the liquid pipe 4 in each double can body 9. It can be accommodated up to the position.
[0014]
In addition, one steam outlet header 13 shared by the two double can bodies 9 is installed on the upper portion of the double can body 9 on the side where the surface combustion burner 5 is not installed. Refrigerant vapor that has been forcedly injected into the space 3 of the double can 9 and heated from the tube walls of the respective liquid tubes 4 and evaporated from the absorption liquid joins at the vapor outlet header 13 and is supplied to the low-temperature regenerator. It is configured so that it can be sent out.
[0015]
Further, the end portions of the inner shell 1 on the side where the surface combustion burner 5 of the double can body 9 is not installed are communicated with each other by an exhaust header 14, and an exhaust duct 15 is connected thereto to connect each double can body. The combustion gas generated by the combustion by the surface combustion burner 5 is joined so that it can be exhausted.
[0016]
Moreover, the communication pipe | tube 16 is installed in two places so that the adjacent spaces 3 of the double can bodies 9 may communicate. Each of the two communication pipes 16 is installed at a position slightly lower than the liquid outlet 12 </ b> A of the liquid outlet header 12, so that the absorption liquid stored in each space 3 can be moved back and forth.
[0017]
Further, a liquid level sensor 18 is installed at a position lower than the liquid outlet 12A of the liquid outlet header 12 and higher than the upper end of the inner shell 1, and the liquid level of the absorbing liquid in the liquid outlet header 12 is detected and controlled. The data is output to the device 19.
[0018]
Based on the information detected and output by the liquid level sensor 18, the controller 19 performs on / off control or rotation speed control of an absorption liquid pump of an absorption refrigerator (not shown) to absorb the refrigerant with the absorber. Absorbing liquid whose concentration of absorbing liquid is lowered is forcibly injected into each of the double cans 9 from the inlet 11 of the liquid inlet header 10, and the amount (liquid level) of the absorbing liquid in the high-temperature regenerator 100 is constant or within a predetermined range. To control.
[0019]
The controller 19 supplies the same amount of combustible gas and combustion air to the two mixing chambers 8 so that the heating powers of the two surface combustion burners 5 are the same.
[0020]
In addition, since this invention is not limited to the said embodiment, various deformation | transformation implementation is possible in the range which does not deviate from the meaning as described in a claim.
[0021]
For example, the liquid level sensor 18 for detecting the liquid level of the absorbing liquid may be installed not in the liquid outlet header 12 but in any one of the double cans 9.
[0022]
It is also possible to increase the capacity further by arranging three or more double cans 9 side by side.
[0023]
【The invention's effect】
As described above, the present invention is a high-temperature regenerator constructed by arranging a plurality of double can bodies equipped with burners in a horizontal plane, so that even if it is difficult to increase the capacity of the surface combustion plate, it is manufactured. Since a plurality of surface combustion plates of a possible size are arranged side by side to increase the capacity, it is easy to increase the capacity of a high-temperature regenerator using a surface combustion plate that generates little NOx, and therefore an absorption refrigerator Can be easily increased in capacity.
[0024]
In addition, an inlet header and an outlet header for absorbing liquid that communicate with the space between the inner shell and the outer shell of each double can body are provided, and an exhaust header that communicates between the non-flame forming side inner terminal portions of each inner shell The high-temperature regenerator is provided with a high-temperature regenerator, so that the piping structure is simplified, the heat generation amount of the burner provided for each double can body is different, and even if there is a difference in the generation amount of refrigerant vapor, the liquid level of the absorbing liquid The level is adjusted through the outlet header, and the heat exchange mechanism in the type of absorption refrigerator that recovers the heat of the combustion gas is simplified.
[0025]
Further, the space between the inner shell and the outer shell of each double can that is lower than the liquid outlet of the absorbent outlet header is communicated with other than the absorbent inlet and outlet headers. According to the invention, the liquid level of the absorbing liquid which is accommodated between the inner shell and the outer shell of each double can body and heated to evaporate and separate the refrigerant becomes easier to match.
[0026]
Further, the invention according to claim 3, wherein the amount of absorbing liquid flowing into the high-temperature regenerator is controlled based on the output information of the absorbing liquid detecting means provided in the absorbing liquid outlet header or any one of the double cans. According to the invention of claim 4 which controls the combustion amount of the burner attached to each double can body to the same amount, the control is further simplified, and between the inner shell and the outer shell of each double can body. The liquid level of the absorption liquid in the layer is also more easily matched.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an embodiment of the present invention, in which (A) is a plan view and (B) is a side view.
2A and 2B are explanatory views showing a conventional technique, in which FIG. 2A is a horizontal sectional view and FIG. 2B is a vertical sectional view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inner shell 2 Outer shell 3 Space 4 Liquid pipe 5 Surface combustion burner 6 Flame 7 Surface combustion plate 8 Mixing chamber 9 Double can body 10 Liquid inlet header 11 Inlet 12 Liquid outlet header 12A Liquid outlet 13 Steam outlet header 14 Exhaust header 15 Exhaust duct 16 Communication pipe 17 Communication pipe 18 Liquid level sensor 19 Controller 100 High temperature regenerator

Claims (4)

A burner, a burner flame is formed inside, an inner shell through which combustion gas passes, an outer shell that contains the absorbent between the inner shell, and a pipe that passes vertically through the inner shell and passes through the absorbent A plurality of double cans having a liquid tube group to be arranged are arranged side by side in a horizontal plane, and an inlet header and an outlet header for absorbing liquid communicating with a space between the inner shell and the outer shell of each double can body are provided. In addition, a high-temperature regenerator comprising an exhaust header that communicates the non-flame forming side inner terminal portions of the inner shells. The space between the inner shell and the outer shell of each double can body, which is lower than the liquid outlet of the absorbent outlet header, is communicated with other than the absorbent inlet header and outlet header. The high temperature regenerator according to claim 1. The amount of the absorption liquid flowing into the high-temperature regenerator is controlled based on output information of the absorption liquid detection means provided in the absorption liquid outlet header or any one of the double can bodies. The high temperature regenerator according to 1 or 2. The high-temperature regenerator according to any one of claims 1 to 3, wherein the combustion amount of the burner attached to each double can body is controlled to the same amount.

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