JP2001304727A - Absorption refrigerating machine/water cooling and warming machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the performance of an absorption refrigerating machine/ water cooling and warming machine, to simplify the structure of the machine and so on, by improving the structure, arrangement, etc., of the equipment constituting the low-temperature drum of the machine. SOLUTION: A gas extraction box 126 is formed by surrounding part of a pipe group in an absorber 108 and a noncondensable gas is collected in the box 126 and extracted. Refrigerant vapor passages 132 are provided on both sides of the pipe group section in the absorber 108 and, at the same time, the lower parts of the passages 132 are closed with baffles 134. The pipe arranging intervals in the upper part of the pipe group are made longer so as to omit an eliminator by making the evaporator 110 horizontally longer in shape. The evaporator 110 and absorber 108 are arranged in the vertical direction, and a condenser 112 and a low-temperature regenerator 114 are arranged in the lateral direction so that the regenerator 114 may come to a high-temperature regenerator side. The liquid outlet box 116 of the regenerator 114 is arranged on the condenser 112 side. The refrigerant flushing pipe 142 of the evaporator 110 is constituted of a flushing pipe and a lower pan.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention improves the performance and simplifies the structure by improving the structure and arrangement of the equipment constituting the low temperature body of an absorption refrigerator and a chiller / heater. It relates to absorption refrigerators and hot / cold water heaters.

[0002]

2. Description of the Related Art Conventionally, absorption refrigerators and cold / hot water heaters using, for example, lithium bromide as an absorbent and water as a refrigerant have been known. Such absorption chiller / chiller / heater, for example, as a configuration of the absorption chiller / heater,
As an example, a configuration as shown in FIG. 5 is known. In the absorption chiller / heater shown in FIG. 5, a low-temperature regenerator 10, a condenser 12, an absorber 14, an evaporator 16, a high-temperature regenerator 18,
It has a low-temperature heat exchanger 20, a high-temperature heat exchanger 22, and pipes for connecting these devices.
The water is sent to the low-temperature regenerator 10 via the pipe 26, the low-temperature heat exchanger 20, and the pipe 28 by the low-temperature pump 24. The dilute solution of the low-temperature regenerator 10 is heated by the high-temperature refrigerant vapor flowing from the gas-liquid separator 30 of the high-temperature regenerator 18 via the pipe 32, and is concentrated to an intermediate concentration.

[0003] This intermediate concentration liquid is divided into two parts. One of the two halves of the liquid is supplied to high-temperature pump 34 via lines 36, 38,
The high-temperature heat exchanger 22 is sent to the high-temperature regenerator 18 via the pipe 40. The intermediate concentration liquid of the high temperature regenerator 18 is supplied to the combustion device 42
, And ascends the heat recovery unit 44, enters the gas-liquid separator 30, and is separated into refrigerant vapor and concentrated liquid. The concentrated liquid in the gas-liquid separator 30 is supplied to the pipe 46, the high-temperature heat exchanger 22, and the pipe 4
8 and mixed with the intermediate-concentration liquid from the pipe 50 (the other of the two divided intermediate-concentration liquids), and introduced into the low-temperature heat exchanger 20 as a mixed concentrated liquid. Spraying device 5
4 spreads the heat on the heat transfer tube of the absorber 14. On the other hand, the refrigerant vapor separated by the gas-liquid separator 30 enters the low-temperature regenerator 10 via the pipe line 32, where the liquid is heated and condensed and liquefied to enter the condenser 12. The refrigerant vapor generated when the rare liquid is concentrated to an intermediate concentration in the low-temperature regenerator 10 enters the condenser 12 and condenses, and then enters the evaporator 16, and the condensed refrigerant water is piped by the refrigerant pump 56. Through the path 58, the spraying device 60 sprays the heat on the heat transfer tubes of the evaporator 16. Here, 62 is a combustion chamber, and 64 is an exhaust pipe.

A low-temperature cylinder of a conventional absorption refrigerator / cooled / hot water machine has, for example, a structure as shown in FIG. That is, the absorber 14 is arranged at the bottom in the main body 66 of the low-temperature cylinder, the evaporator 16 is arranged above the absorber 14, and the low-temperature regenerator 10 and the condenser 12 are arranged above the evaporator 16. I have. The heat transfer tube 68 of the absorber 14 has a spraying device 5
From 4, the absorbing liquid is sprayed. The non-condensable gas collected in the absorber 14 is exhausted through the bleed pipe 70.
Reference numeral 72 denotes an absorption liquid reservoir, 74 denotes a low-temperature regenerator liquid outlet box, 76 denotes a baffle plate, and 78 denotes a refrigerant reservoir. The evaporator 16 is provided with a refrigerant flash tube 80, and the refrigerant vapor from the refrigerant flash tube 80 is supplied to the upper heat transfer tube 82.
, And the refrigerant liquid is sent to the lower refrigerant reservoir 84.
This refrigerant liquid is distributed by the spraying device 60 to the heat transfer tube 8 of the evaporator 16.
The refrigerant vapor that has been sprayed and evaporated on the evaporator 2 flows out of the eliminator 86 on the upper side of the evaporator 16 and on the side of the evaporator 16.

[0005]

In the conventional low-temperature cylinder of an absorption refrigerator or a chiller / heater, as shown in FIG. The non-condensable gas was extracted from the extraction port 88 provided in the trachea 70. Further, the configuration was such that refrigerant vapor flows into the absorber 14 only from above the heat transfer tube 68. The arrows in FIG. 7 indicate the flow of the refrigerant vapor. However, in the configuration in which the bleeding pipe is installed at a key point in the tube bank, the non-condensable gas stay position does not always coincide with the bleeding port position of the bleeding pipe. In some cases lead to deterioration of the performance. Further, in the configuration in which the refrigerant vapor flows only from the upper part of the tube group, the flow velocity of the refrigerant vapor at the inlet part of the tube group is increased, and the pressure loss of the refrigerant vapor is large, leading to a decrease in absorber performance.

Further, in the low temperature body of the conventional absorption refrigerator / cooled / hot water machine, as described above, the eliminator is disposed at the refrigerant vapor outlet on the side of the evaporator tube group. This is because the evaporator shape is vertically long, and when the refrigerant vapor evaporated by the evaporator is allowed to flow out only from the upper part of the evaporator, the flow velocity of the refrigerant vapor becomes excessive, causing carry-over of the refrigerant liquid or the pressure of the refrigerant vapor. This is because the loss is excessive, so that the refrigerant vapor is caused to flow out also from the side of the tube bank to prevent carry-over of the refrigerant liquid. However, in the configuration in which the eliminator is installed on the side of the tube group of the evaporator, the structure of the evaporator is complicated.

As shown in FIG. 6, an evaporator, an absorber, a condenser, and a low-temperature regenerator, which constitute a conventional low-temperature cylinder, are provided with an evaporator 16 above the absorber 14, and an evaporator 16 as shown in FIG.
The low temperature regenerator 10 and the condenser 12 are arranged side by side on the upper side, and the condenser 12 is arranged on the high temperature regenerator side. However, as shown in FIG. 8, in the configuration in which the condenser 12 is arranged on the high-temperature regenerator 18 side, the condenser 1
2 and the refrigerant vapor piping 92 from the high-temperature regenerator 18 to the refrigerant vapor header of the low-temperature regenerator 10 had a complicated arrangement.

[0008] In the conventional low-temperature cylinder of an absorption refrigerator or a chiller / heater, as shown in FIG. 9, a refrigerant flash tube 80 of an evaporator includes a flash tube 94, an upper baffle 96,
The lower tray 98 is formed. In this case, the refrigerant liquid from the condenser is ejected from the hole 100 of the flash tube 94 to the upper baffle 96, and the refrigerant vapor and the refrigerant liquid flow to the lower tray 98, and the refrigerant vapor flows into the notch 10 of the upper baffle 96.
2 flows to the upper tube group, and the refrigerant liquid flows into the hole 1 of the lower tray 98.
From 04 flows to the lower refrigerant sump. The arrows in FIG. 9 indicate the flow of the refrigerant. However, the structure of the evaporator refrigerant flash tube as described above was complicated.

The present invention has been made in view of the above points, and an object of the present invention is to improve performance by improving the structure and arrangement of equipment constituting a low-temperature body of an absorption refrigerator or a chiller / heater. It is an object of the present invention to provide an absorption refrigerator and a chiller / heater which can achieve simplification of the structure and the like.

[0010]

In order to achieve the above object, an absorption refrigerator and a chiller / heater according to the present invention comprise a low-temperature regenerator,
Condenser, absorber, evaporator, high temperature regenerator, low temperature heat exchanger,
In an absorption refrigerator and a chiller / heater equipped with a high-temperature heat exchanger and a pipe for connecting these devices, a bleeding box is provided by providing a surrounding member having a closed upper end so as to surround a part of a tube group in the absorber. The bleeding box is connected to a bleeding tube at the top of the bleeding box to collect non-condensable gas in the bleeding box and bleed from the bleeding tube (see FIGS. 1 and 2). In the above absorption refrigerator / cooled / hot water machine, a refrigerant vapor passage is provided on the side of the tube group in the absorber so that gas is collected in the bleeding box, and the lower side surface of the passage may be closed with a baffle. It is preferable (see FIGS. 1 and 2).

Further, the absorption refrigerator / cooler / heater of the present invention comprises:
In absorption chillers and chiller / heaters equipped with low-temperature regenerators, condensers, absorbers, evaporators, high-temperature regenerators, low-temperature heat exchangers, high-temperature heat exchangers, and pipes connecting these devices, In addition to arranging the tube groups in a horizontally long shape, the pipe pitch at the top of the tube group is made large, so that the refrigerant vapor passage at the top of the tube group is enlarged so that the refrigerant vapor flows out only from the upper part of the evaporator. (See FIG. 1).

Further, the absorption refrigerator and the chiller / heater of the present invention include:
In low-temperature regenerators, condensers, absorbers, evaporators, high-temperature regenerators, low-temperature heat exchangers, high-temperature heat exchangers, and absorption chillers and chiller / heaters equipped with piping connecting these devices, The evaporator, the absorber, the condenser, and the low-temperature regenerator that constitute the evaporator are provided above the absorber, and the condenser and the low-temperature regenerator are arranged side by side with the low-temperature regenerator above the evaporator with the high-temperature regenerator side. (See FIGS. 1 and 3).
reference). In the above absorption refrigerators and cold / hot water heaters, the liquid outlet box of the low-temperature regenerator is arranged on the side of the condenser opposite to the high-temperature regenerator, and the low-temperature cylinder is connected to connect the low-temperature regenerator and the liquid outlet box. Preferably, a tube is provided (see FIG. 1).

Further, the absorption refrigerator / cooler / heater of the present invention comprises:
In absorption chillers and chiller / heaters equipped with low-temperature regenerators, condensers, absorbers, evaporators, high-temperature regenerators, low-temperature heat exchangers, high-temperature heat exchangers, and pipes connecting these devices, The refrigerant flash tube is composed of a flash tube and a lower tray, a hole for spraying refrigerant is provided on a lower tray side of the flash tube, and a hole for introducing refrigerant liquid into the refrigerant reservoir is provided on the lower tray. (See FIGS. 1 and 4). In addition, it is of course possible to configure an absorption refrigerator and a chiller / heater by appropriately combining the configurations of the present invention described above.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the present invention will be described below with reference to an absorption chiller / heater, but the present invention is not limited to an absorption chiller / heater. Is also applicable. FIG. 1 shows a low temperature body of an absorption chiller / heater according to an embodiment of the present invention. As shown in FIG. 1, an absorber 10 is provided at the bottom inside the main body 106 of the low temperature cylinder.
8, an evaporator 110 is arranged above the absorber 108, and a condenser 112 and a low-temperature regenerator 114 are arranged above the evaporator 110. FIG. 1 shows a configuration in which the low-temperature regenerator 114 is arranged on the high-temperature regenerator side. The low-temperature regenerator liquid outlet box 116 is arranged on the condenser 112 side, and the low-temperature regenerator 114 and the liquid outlet box 116 are connected by a communication pipe 118. 120 is a baffle plate, 122 is a refrigerant reservoir.

The absorber 108 is provided with a surrounding member 124 whose upper end is closed so as to surround a part of the tube group, and a non-condensable gas extraction box 126 is formed. Bleed box 1
The non-condensable gas collected at 26 is exhausted through a bleed pipe 128. 130 is a bleed port. In addition, the absorber 10
A refrigerant vapor passage 132 is provided on the side of the tube group in 8, and the lower part of the side surface of the refrigerant vapor passage 132 is closed by a baffle 134. 136 is a device for spraying the absorbing liquid, 13
Reference numeral 8 denotes an absorbing liquid reservoir. In the evaporator 110, the heat transfer tubes 140 are arranged so that the shape of the evaporator is horizontally long, and the tube pitch of the upper heat transfer tubes 140 is large. By expanding the refrigerant vapor passage at the top of the tube bank, it is not necessary to install an eliminator on the side of the evaporator. Evaporator 1
10 is provided with a refrigerant flash tube 142 (the structure will be described later). The refrigerant vapor from the refrigerant flash tube 142 is sent to the upper heat transfer tube 140, and the refrigerant liquid is sent to the lower refrigerant sump 144. This refrigerant liquid is sprayed to the heat transfer tube 140 of the evaporator 110 by the spraying device 146,
The evaporated refrigerant vapor flows out from the upper part of the evaporator 110.

FIG. 2 is an enlarged view of the absorber shown in FIG. 1, and shows the structure of the absorber in the low temperature body of the absorption chiller / heater according to the first embodiment of the present invention. As shown in FIG. 2, an enclosing member 124 having an upper end closed so as to surround a part of the heat transfer tube 148 in the absorber 108 is provided.
6 and a bleed tube 128 is connected to the top of the bleed box 126 to collect non-condensable gas in the bleed box 126 and
Bleed from 28. Further, a refrigerant vapor passage 132 is provided on the side of the group of heat transfer tubes 148 in the absorber 108 so that gas is collected in the bleeding box 126.
Is configured so as to close the lower side of the baffle 134 with the baffle 134. The arrows in FIG. 2 indicate the flows of the refrigerant vapor and the gas. As described above, a part of the tube group is surrounded to form an bleeding box, and the gas is collected and bleeding in the bleeding box, whereby the non-condensable gas can be surely exhausted, so that the performance of the absorber is improved. In addition, by providing a refrigerant vapor passage on the side of the tube bank and closing the lower part of this passage with a baffle, not only gas is easily collected in the bleeding box, but also refrigerant vapor flows in from the top and side of the tube bank. With this configuration, the flow rate of the refrigerant vapor at the tube bank inlet portion is reduced, so that the pressure loss of the refrigerant vapor is reduced and the performance of the absorber is improved.

The second embodiment of the present invention is a structure of an evaporator in which an eliminator can be omitted. As shown in FIG. 1 described above, the heat transfer tubes 140 are arranged so that the shape of the evaporator 110 is horizontally long, and the vertical and horizontal tube pitches of the upper heat transfer tubes 140 are set large, so that the refrigerant vapor passage at the upper part of the tube group is formed. The refrigerant vapor is expanded so that the refrigerant vapor flows out only from the upper part of the evaporator 110. In this way, by expanding the refrigerant vapor passage at the top of the tube group to suppress the flow velocity of the refrigerant vapor and reduce the pressure loss, there is no need to allow the refrigerant vapor to flow out from the side of the tube group, thereby preventing refrigerant liquid carryover. The eliminator can be omitted, and the structure of the evaporator can be simplified. Further, since the shape of the evaporator is horizontally long, as can be seen from FIG. 3 described later, the height of the low-temperature cylinder is reduced, and the installation height of the apparatus can be reduced.

A third embodiment of the present invention is an arrangement of an evaporator, an absorber, a condenser, and a low-temperature regenerator constituting a low-temperature cylinder. As shown in FIG. 1, the evaporator 110 is provided above the absorber 108, and the low-temperature regenerator 1 is provided above the evaporator 110.
A condenser 112 and a low-temperature regenerator 114 are arranged side by side with 14 as a high-temperature regenerator. As shown in FIG. 3, by arranging the low-temperature regenerator 114 on the high-temperature regenerator 150 side,
Cooling water communication piping 152 and refrigerant vapor piping 1 from the high temperature regenerator 150 to the refrigerant vapor header of the low temperature regenerator 114
54 is the shortest and simplest. In this case, as shown in FIG. 1 described above, the low-temperature regenerator liquid outlet box 116 is disposed on the side of the condenser 112 opposite to the high-temperature regenerator, and the low-temperature regenerator 114 and the liquid outlet box are provided inside the low-temperature cylinder. A communication tube 118 is provided to connect the communication tube 116. As described above, when the low-temperature regenerator is disposed on the high-temperature regenerator side, if the low-temperature regenerator liquid outlet box is provided on the side of the low-temperature regenerator, the liquid outlet box is connected between the low-temperature cylinder and the high-temperature regenerator. Since space for piping to be used is required, a machine width dimension is increased. Therefore, in order to solve this problem, the low-temperature regenerator liquid outlet box is arranged on the side of the condenser, and a connecting pipe from the low-temperature regenerator to the liquid outlet box is installed inside the low-temperature body.

FIG. 4 is an enlarged view showing the details of the refrigerant flash tube of the evaporator shown in FIG. 1. The structure of the evaporator refrigerant flash tube in the low temperature body of the absorption chiller / heater according to the fourth embodiment of the present invention. Is shown. As shown in FIG. 4, the refrigerant flash tube 142 of the evaporator includes a flash tube 156 and a lower tray 158, and a hole 160 for spraying the refrigerant is provided on the lower tray 158 side of the flash tube 156. Hole 1 for introducing liquid into coolant reservoir
62 are provided. In this case, the refrigerant liquid from the condenser is ejected from the hole 160 of the flash tube 156 to the lower tray 158, the refrigerant vapor flows to the upper tube group, and the refrigerant liquid flows from the hole 162 of the lower tray 158 to the lower refrigerant reservoir. In addition,
The arrows in FIG. 4 indicate the flow of the refrigerant. As described above, the evaporator refrigerant flash tube can be constituted by the flash tube and the lower pan, and the structure is simplified. In addition,
It is possible to configure an absorption refrigerator / cooled / hot water machine by appropriately combining the configurations of the first to fourth embodiments described above.

[0020]

As described above, the present invention has the following effects. (1) A part of the tube group in the absorber is surrounded to form an bleeding box, and by collecting and bleeding gas in the bleeding box, the non-condensable gas can be reliably exhausted, thereby improving the performance of the absorber. In addition, when a refrigerant vapor passage is provided on the side of the tube bank and the lower part of this passage is closed with a baffle, not only the gas is easily collected in the bleeding box, but also refrigerant vapor flows in from the upper part and the side of the tube bank. With this configuration, the flow rate of the refrigerant vapor at the inlet of the tube bank is reduced, the pressure loss of the refrigerant vapor is reduced, and the performance of the absorber is improved. (2) By arranging the tube banks so that the shape of the evaporator is horizontally long, and by increasing the tube pitch at the top of the tube group and widening the refrigerant vapor passage at the top of the tube group, the refrigerant vapor can be discharged only from the upper portion of the evaporator. The effluent can be configured so that there is no need to install an eliminator on the side of the tube bank. This simplifies the structure of the evaporator. (3) In the low-temperature body of the absorption refrigerator and the chiller / heater, the low-temperature regenerator is arranged on the high-temperature regenerator side, so that the cooling water communication pipe from the absorber to the condenser and the low-temperature regenerator from the high-temperature regenerator The refrigerant vapor piping to the refrigerant vapor header of the regenerator is shortest and simple. In this case, if the low-temperature regenerator liquid outlet box is arranged on the condenser side and a connecting pipe from the low-temperature regenerator to the liquid outlet box is installed inside the low-temperature cylinder, the liquid outlet box will be located between the low-temperature cylinder and the high-temperature regenerator. Therefore, there is no need to provide a space for piping connected to the apparatus, and the machine width dimension does not increase. (4) The evaporator refrigerant flash tube can be composed of the flash tube and the lower pan, and the structure is simple.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional explanatory view showing a low-temperature body of an absorption chiller / heater according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional explanatory view showing an absorber in a low-temperature cylinder of the absorption chiller / heater according to the first embodiment of the present invention.

FIG. 3 is a schematic external view showing a configuration of an absorption chiller / heater according to a third embodiment of the present invention.

FIG. 4 is an enlarged sectional view showing an evaporator refrigerant flash tube in a low temperature body of an absorption chiller / heater according to a fourth embodiment of the present invention.

FIG. 5 is a systematic schematic configuration diagram showing an example of a conventional absorption chiller / heater.

FIG. 6 is a schematic cross-sectional explanatory view showing a low-temperature cylinder of a conventional absorption chiller / heater.

FIG. 7 is an enlarged cross-sectional explanatory view showing an absorber in a low temperature body of a conventional absorption chiller / heater.

FIG. 8 is a schematic configuration external view showing a conventional absorption chiller / heater.

FIG. 9 is an enlarged sectional view showing an evaporator refrigerant flash tube in a low temperature body of a conventional absorption chiller / heater.

[Explanation of symbols]

10,114 Low temperature regenerator 12,112 Condenser 14,108 Absorber 16,110 Evaporator 18,150 High temperature regenerator 20 Low temperature heat exchanger 22 High temperature heat exchanger 24 Low temperature pump 26,28,32,36,38, 40, 46, 48, 5
0, 52, 58 Pipeline 30 Gas-liquid separator 34 High temperature pump 42 Combustion device 44 Heat recovery device 54, 60, 136, 146 Spraying device 56 Refrigerant pump 62 Combustion chamber 64 Exhaust cylinder 66, 106 Low temperature body main body 68, 82 , 140, 148 Heat transfer tube 70, 128 Bleed tube 72, 138 Absorbent liquid reservoir 74, 116 Low temperature regenerator liquid outlet box 76, 120 Baffle plate 78, 84, 122, 144 Refrigerant reservoir 80, 142 Refrigerant flash tube 86 Eliminator 88, 130 Extraction port 90, 152 Cooling water communication pipe 92, 154 Refrigerant vapor pipe 94, 156 Flash pipe 96 Upper baffle 98, 158 Lower tray 100, 104, 160, 162 hole 102 Notch 118 Communication pipe 124 Surrounding member 126 Extraction box 132 refrigerant Steam passage 134 baffle

 ──────────────────────────────────────────────────の Continuing on the front page (72) Osamu Oishi, Inventor 1000, Aoji-cho, Kusatsu-shi, Shiga Kawagei-Hiroshi Kogyo Co., Ltd. (72) Inventor Susumu Shinohara 1000 Aochi-cho, Kusatsu-shi, Shiga Prefecture F-term (reference) 3J09 BB11 BB31 BB32 BB33 LL03 MM07

Claims (6)

[Claims] 1. A low-temperature regenerator, a condenser, an absorber, an evaporator,
Absorption chillers and chiller / heaters equipped with high-temperature regenerators, low-temperature heat exchangers, high-temperature heat exchangers, and pipes connecting these devices are closed at the upper end so as to partially surround the tube group in the absorber. An extraction refrigerator, wherein an extraction box is formed by providing an enclosed member, and an extraction pipe is connected to an upper part of the extraction box, and non-condensable gas is collected in the extraction box and extracted from the extraction pipe.・ Cool and hot water machine. 2. An absorption refrigerator according to claim 1, wherein a refrigerant vapor passage is provided on a side of the tube group in the absorber so that gas is collected in the bleeding box, and a lower side surface of the passage is closed with a baffle.・ Cool and hot water machine. 3. A low-temperature regenerator, a condenser, an absorber, an evaporator,
In absorption chillers and chilled water heaters equipped with high-temperature regenerators, low-temperature heat exchangers, high-temperature heat exchangers, and pipes connecting these devices, the evaporators are arranged in a horizontally long shape and the tube groups are arranged. An absorption chiller / cooler / heater, wherein the upper pipe pitch is made larger so that the refrigerant vapor passage at the upper part of the tube group is enlarged so that refrigerant vapor flows out only from the upper part of the evaporator. 4. A low-temperature regenerator, a condenser, an absorber, an evaporator,
Evaporator, absorber, condenser, low-temperature regeneration for low-temperature cylinders in absorption refrigerators and cold / hot water heaters equipped with high-temperature regenerators, low-temperature heat exchangers, high-temperature heat exchangers, and pipes connecting these devices An evaporator is provided above the absorber, and a condenser and a low-temperature regenerator are arranged side by side with the low-temperature regenerator on the high-temperature regenerator side above the evaporator. Machine / cooled / hot water machine. 5. The low-temperature regenerator liquid outlet box is disposed on the side of the condenser opposite to the high-temperature regenerator, and a communication pipe for connecting the low-temperature regenerator and the liquid outlet box is provided inside the low-temperature cylinder. 4. The absorption refrigerator / cooler / heater according to 4. 6. A low-temperature regenerator, a condenser, an absorber, an evaporator,
In absorption chillers and water heaters equipped with high-temperature regenerators, low-temperature heat exchangers, high-temperature heat exchangers, and pipes connecting these devices, the refrigerant flash tube of the evaporator is composed of a flash tube and a lower pan. An absorption refrigerator / cooler / heater, wherein a hole for spraying refrigerant is provided on a lower tray side of a flash tube, and a hole for introducing refrigerant liquid into a refrigerant reservoir is provided in the lower tray.