JP4928515B2 - Absorption type water heater - Google Patents

Description

  This is a technology related to the structure of an absorption chiller / heater.

Conventionally, a large absorption chiller / heater that cannot be accommodated in an elevator is installed using a crane or the like before the building that houses the absorption chiller / heater is completed. When the absorption chiller / heater was renewed due to aging, etc., the building walls and floor were broken and carried in, but the absorption chiller / heater was replaced by an elevator etc. for the purpose of eliminating the inconvenience. There has been known a technique of dividing into blocks of a size that can be accommodated and carrying them to the installation site, and then welding and assembling the blocks (see Patent Document 1).
JP 2001-124438 A

In the prior art as shown in Patent Document 1, since welding is performed at the time of assembly at the installation site, there is a risk of fire due to sparks at the time of welding, and a large amount of equipment is required, and further high Since confidentiality is required, there are problems such as securing skilled engineers.
Moreover, there was a problem in confidential reliability when using a packing and a flange joint instead of the welding.

  The present invention has been made to solve the above-described problems, and provides an absorption chiller / heater that can be easily assembled without performing welding and has high sealing performance when assembled at the installation site. For the purpose.

A regenerator, a condenser, an evaporator, an absorber, a heat exchanger, a solution pump, a refrigerant pump, a pipe connecting each of the predetermined apparatuses, a refrigerant circulating through the predetermined apparatus through the pipe, and an absorbing solution that absorbs the refrigerant, And an absorption chiller / heater having a shell for housing the regenerator, condenser, evaporator, absorber, etc.
The shell and the regenerator, condenser, evaporator, and absorber housed in the shell are configured to be capable of being divided into a plurality of parts in the longitudinal direction. There are provided a plurality of elastic seal members that surround all the devices by combining them and a flange having a fixing means formed on the outer extension thereof, and the one flange and the other flange facing each other at the split end face are It is characterized by being fixed so as to be split by a fixing means.

  As described above, the shell and the regenerator, condenser, evaporator, and absorber accommodated in the shell are configured to be divided into a plurality of parts in the longitudinal direction, and when installing the shell, the shell is divided, Since the divided shells are not used for welding when they are brought into the installation site and assembled, there is no risk of fire, and it is easy to assemble without the need for large-scale equipment and skilled technicians. Play.

  Further, when a combination of a seal by a single go of a device and a seal by a combined go is used, double sealing is performed with a small number of elastic seal members, that is, each device is surrounded by an inner elastic seal member and is enclosed. The number of grooves for accommodating the elastic seal member is smaller than the case where each device is further surrounded by an outer elastic seal member to make a double seal, and the groove processing becomes easy and the sealing performance is improved because of the double seal. There is a higher effect.

An embodiment of the present invention will be described with reference to FIGS. 1 to 6 by taking a double-effect absorption refrigerator as an example.
1 is a front view according to the first embodiment, FIG. 2 is a divided view taken along line II in FIG. 1, FIG. 3 is a partially enlarged view of FIG. 2, and FIG. FIG. 5 is a division view in the second embodiment separated by the line I-I in FIG. 1, FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5, and FIG.

First, the structure of the double-effect absorption refrigerator will be described with reference to FIG.
The double-effect absorption refrigerator includes a high temperature regenerator 2 having a boiler 1, a low temperature regenerator 3, a condenser 4, an evaporator 5, an eliminator 6, an absorber 7, a refrigerant pump 8, a solution pump 9, a heat exchanger 10, It is comprised by the pipe line which connects each said predetermined apparatus.
Next, the operation of each device will be described.
The high-temperature regenerator 2 heats an absorbing solution that absorbs a refrigerant such as lithium bromide in the high-temperature regenerator 2 with the combustion heat of the boiler 1 to generate a refrigerant vapor such as water contained in the absorbing solution. A small amount of absorption solution (hereinafter referred to as “concentrated absorption solution”) is produced.

The low-temperature regenerator 3 has a heating tube group 3A, and the refrigerant solution containing the refrigerant in the low-temperature regenerator 3 is heated by the refrigerant vapor from the high-temperature regenerator 2 flowing into the heating tube group 3A. To produce a concentrated absorbent solution.
The condenser 4 has a cooling water pipe group 4A, and the refrigerant vapor generated in the low temperature regenerator 3 and flowing into the condenser 4 is cooled and liquefied by cooling water passing through the cooling water pipe group 4A.
The evaporator 5 has a cold water pipe group 5A and a distribution header 5B. The refrigerant liquid liquefied by the condenser 4 is distributed from the distribution header 5B to the cold water pipe group 5A to evaporate the refrigerant liquid. Cools by removing the latent heat of vaporization from the cold water that passes.

The absorber 7 distributes the concentrated absorbent solution generated in the high temperature regenerator 2 and the low temperature regenerator 3 from the distribution header 7B to the cooling water pipe group 7A, evaporates in the evaporator 5 and absorbs the absorption via the eliminator 6. The refrigerant vapor flowing into the vessel 7 is absorbed by the concentrated absorbent solution, and an absorbent solution with an increased refrigerant content (hereinafter referred to as “dilute absorbent solution”) is generated.
The refrigerant pump 8 circulates the refrigerant solution through the distribution header 5B in order to distribute the refrigerant solution accumulated in the bottom liquid reservoir of the evaporator 8 to the cold water tube group 5A.

The solution pump 9 is a low-temperature regenerator 3, a high-temperature regenerator 2, a distribution header for distributing the refrigerant-containing absorption solution accumulated in the bottom reservoir of the absorber 7 to the cooling water pipe group 7 </ b> A of the absorber 7. Circulate 7B.
The heat exchanger 10 includes a dilute absorbent solution having a low temperature sent to the low temperature regenerator 3 and the high temperature regenerator 2 by the solution pump 9 and a concentrated absorbent solution having a high temperature returning from the low temperature regenerator 3 and the high temperature regenerator 2 to the absorber 7. Exchange heat with.

Next, a first embodiment will be described with reference to FIGS.
In FIG. 1, reference numeral 11 denotes a shell of the present invention, and the shell 11 is formed to be split into two in the longitudinal direction on the opposed surfaces of the flange 11A and the flange 11B. The container 4, the evaporator 5, and the absorber 7 are accommodated.

The storage example will be described with reference to FIG.
The shell 11 has a substantially quadrangular cross section. The inside of the shell 11 is divided into an upper region and a lower region. The upper region houses the low-temperature regenerator 3 and the condenser 4, and the lower region horizontally. The evaporator 5 and the absorber 7 are accommodated side by side.
Further, an upper inner groove that surrounds the combination of the low-temperature regenerator 3 and the condenser 4 is provided on any one of the opposing end faces (here, the end face provided with the flange 11B) of the split end face of the shell 1. 12, a lower inner groove 13 that surrounds the evaporator 5 and the absorber 7, and an outer groove 14 that surrounds both the upper inner groove 12 and the lower inner groove 13 outside the upper inner groove 12 and the lower inner groove 13. The upper inner groove 12, the lower inner groove 13, and the outer groove 14 are inner elastic seals made of a metal, such as copper, brass, aluminum, or rubber, which is softer and more elastic than the material of the flange 11. Members 16 and 17 and an outer elastic seal member 18 are mounted.
The “combination go” referred to here means that a plurality of devices are collectively put together.

  Further, fixing bolt holes 15 for joining the flanges 11A and 11B to form the shell 11 are formed at a predetermined interval on the flange 11A and the flange 11B, and both the bolt holes 15 of the flange 11A and the flange 11B are connected to the bolt holes 15 of the flange 11A and the flange 11B. Bolts that pass through the flanges 11A and 11B are inserted, and the flanges 11A and 11B are fixed to be separable by the bolts and nuts.

  According to the above embodiment, when the shell 11 containing the low-temperature regenerator 3, the condenser 4, the evaporator 5, and the absorber 7 is divided and brought into the installation site and assembled, the flange surface provided with the elastic seal member Are fixed with bolts and nuts so that they can be fixed easily, and unlike welding, there is an effect that there is no danger of a fire due to sparks and large-scale equipment is unnecessary.

  Further, since the elastic seal member is a double seal that is doubly arranged with the inner elastic seal members 16 and 17 and the outer elastic seal member 18, the low-temperature regenerator 3, the condenser 4, the evaporator 5, and the absorption Since the isolation performance between the vessel 7 and the atmosphere is increased, the airtight reliability, which is a problem in Patent Document 1, is not impaired.

Next, a second embodiment will be described based on FIG.
As shown in FIG. 5, the difference from the first embodiment is that only the inner elastic seal members 16 and 17 surrounding the upper region and the lower region of the shell 11 are not mounted on the outer elastic seal member 18. A single seal is used, and the bottom shape of the inner groove 12 is a knife edge, and the inner elastic seal members 16 and 17 are made of metal such as copper, brass, or aluminum.
As shown in FIG. 6, the inner groove 12 is formed in both flanges 11A and 11B, the bottom surface thereof is formed in the shape of a knife edge protruding in the shape of an acute triangle, and the inserted inner elastic seal members 16 and 17 are It is formed in a flat plate shape.
Further, the inner groove 12 may be formed by only one flange 11B.
Therefore, according to this embodiment, high sealing performance can be ensured and the number of grooves for storing the elastic seal member can be reduced.

In addition to the above embodiment, other embodiments may be as follows.
In the first and second embodiments, the combination envelope of the low temperature regenerator 3 and the condenser 4 and the combination envelope of the evaporator 5 and the absorber 7 are surrounded by the elastic seal member. That is, the low temperature regenerator 3, the condenser 4, the evaporator 5, and the absorber 7 may be individually surrounded by the elastic seal member as a single surrounding.
Then, since the length surrounding each of the low-temperature regenerator 3, the condenser 4, the evaporator 5, and the absorber 7 is shortened, it becomes easy to manufacture a groove for inserting the elastic seal member and insert the elastic seal member. There is an effect.

Furthermore, as described above, the elastic seal member that individually surrounds the low-temperature regenerator 3, the condenser 4, the evaporator 5, and the absorber 7 is used as an inner elastic seal member, and the difference between the pressure of each device and the atmospheric pressure is further reduced. Accordingly, an outer elastic seal member for combining and enclosing the inner elastic seal members in an appropriate combination may be provided, or an elastic seal member surrounding the combination of devices having similar pressures may be further combined with an outer elastic seal member. May be.
Then, since only the part which raises the reliability of a seal | sticker will be sealed twice, there exists an effect which can use a sealing member efficiently.

Moreover, in the said 1st, 2nd embodiment, although the shell 11 was divided into two, you may divide into the number suitably according to the elevator used at the time of carrying in, the width of a passage, etc.
In the first and second embodiments, the elastic seal member is an O-ring. However, the cross-sectional shape may be a square or polygonal square ring, or a rectangular flat ring having a flat cross-sectional shape.

It is a front view in the Example of this invention. It is the division | segmentation figure isolate | separated by the II line | wire of FIG. FIG. 3 is a partially enlarged view of FIG. It is VV sectional drawing of FIG. It is the division | segmentation figure of 2nd Embodiment isolate | separated by the II line | wire of FIG. It is VI-VI sectional drawing of FIG. It is a schematic block diagram of a well-known double effect absorption refrigerator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Boiler 2 High temperature regenerator 3 Low temperature regenerator 3A Heating tube group 4 Condenser 4A Cooling water tube group 5 Evaporator 5A Cold water tube group 5B Distribution header 6 Eliminator 7 Absorber 7A Cooling water tube group 7B Distribution header 8 Refrigerant pump 9 Solution pump 10 Heat exchanger 11 Shell 11A Flange 11B Flange 12 Upper inner groove 13 Lower inner groove 14 Outer groove 15 Bolt hole 16 Inner elastic seal member 17 Inner elastic seal member 18 Outer elastic seal member

Claims (5)

A regenerator, a condenser, an evaporator, an absorber, a heat exchanger, a solution pump, a refrigerant pump, a pipe connecting each of the predetermined apparatuses, a refrigerant circulating through the predetermined apparatus through the pipe, and an absorbing solution that absorbs the refrigerant, And an absorption chiller / heater having a shell for housing the regenerator, condenser, evaporator, absorber, etc.
The shell and the regenerator, condenser, evaporator, and absorber housed in the shell are configured to be capable of being divided into a plurality of parts in the longitudinal direction. A plurality of elastic seal members that surrounds all the devices by combination surroundings and a flange having a fixing means formed on the outer extension thereof are provided, and one flange and the other flange facing each other at the split end face are fixed to each other. Absorption chiller / heater fixed by means to be separable.   The absorption chiller / heater according to claim 1, wherein a regenerator, a condenser, an evaporator, and an absorber are surrounded by the device enclosure.   The regenerator, the condenser, the evaporator, and the absorber are surrounded by the regenerator, the condenser, the evaporator, and the absorber, respectively, and the regenerator, the condenser, the evaporator, and the absorber surrounded by the single are surrounded. 1. Absorption type hot and cold water machine according to 1.   The absorption chiller / heater according to claim 1, wherein the equipment enclosure is a regenerator / condenser combination enclosure and an evaporator / absorber combination enclosure.   The absorption chiller-heater according to claim 1, wherein the equipment enclosure is a combination enclosure of a regenerator and a condenser, a combination enclosure of an evaporator and an absorber, and the combination enclosure is further combined.

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