KR101342378B1 - Absorption type chiller-heater - Google Patents

Abstract

The present invention relates to an absorption chiller, and more particularly, to an absorbent chiller that can stably operate the flow of the concentrated solution while improving the overall system efficiency.

Description

Absorption cold and hot water machine {ABSORPTION TYPE CHILLER-HEATER}

The present invention relates to an absorption chiller, and more particularly, to an absorbent chiller that can stably operate the flow of the concentrated solution while improving the overall system efficiency.

Absorption chiller uses a gas or fuel such as LPG or LNG as a heat source, and absorbs, regenerates, condenses, or evaporates a refrigerant (ie, water) using an absorbent liquid (for example, an aqueous lithium bromide (LiBr) solution). And, in the process is a device used for cooling and heating through heat exchange with cold water circulating the load side (for example, indoor unit).

1 is a schematic system diagram of a general absorption chiller 1 according to the prior art.

The general absorption cold / hot water heater 1 according to the related art shown in FIG. 1 includes two regenerators (ie, a high temperature regenerator 20 and a low temperature regenerator 30), and two heat exchangers (ie, a low temperature solution heat exchanger) 60) and a high temperature solution heat exchanger (70) is a so-called 'double effect' absorption cold and hot water machine.

As shown in FIG. 1, a general absorption chiller 1 includes an absorber 10, a high temperature regenerator 20, a low temperature regenerator 30, a condenser 40 and an evaporator 50, and a low temperature solution heat exchanger ( 60) and a high temperature solution heat exchanger 70 ().

In the cooling operation mode in the absorption type cold water heater 1 according to the prior art, the lean solution (that is, the water containing a lot of water) from the absorber is passed through the lean solution pipe 13 to the low temperature solution heat exchanger 60 and the high temperature. The solution enters the high temperature regenerator 20 via the solution heat exchanger 70. The lean solution entering the high temperature regenerator 20 is heated and boiled by the burner 21 to separate refrigerant vapor (i.e., water vapor) from the absorbent liquid, and the lean solution is changed into an intermediate absorbent liquid, that is, an intermediate solution.

The intermediate solution obtained in the high temperature regenerator 20 is heated in advance through the high temperature solution heat exchanger 70 through the intermediate solution pipe 22 to heat the lean solution entering the high temperature regenerator 20 and then enters the low temperature regenerator 30. In addition, the refrigerant vapor evaporated from the high temperature regenerator 20 flows through the heat exchange tube group 31 arranged inside the low temperature regenerator 30 through the refrigerant steam pipe 23 to heat the intermediate solution inside the low temperature regenerator 30 to further cool the refrigerant. After separation by evaporation, it enters the condenser 40 through the outlet pipe 33.

The concentrated solution made by evaporating and separating the refrigerant from the intermediate solution in the low temperature regenerator 30 is heated in advance through the low temperature solution heat exchanger 60 along the rich solution pipe 32 to heat the lean solution from the absorber 10. After entering the absorber 10, the absorber 10 is dispersed in the absorber 10 to absorb the water vapor introduced from the evaporator 50 to turn into a lean solution, the absorption heat generated in the process is cooled by the absorber side coolant heat pipe group (11) do.

The lean solution accumulated in the absorber enters the high temperature regenerator 20 through the low temperature (or medium temperature) solution heat exchanger 30 and the high temperature solution heat exchanger 70 through the above-described lean solution pipe 13.

Meanwhile, the coolant circulating in the outdoor unit (for example, the cooling tower) enters the absorber 10 along the coolant pipe 81 and flows into the absorber side coolant heat pipe group 11 in the absorber 10 to supply the above-described rich solution. After cooling (that is, cooling the heat of absorption), the refrigerant vapor introduced into the condenser is condensed while flowing again within the condenser side cooling water heat pipe group 41 in the condenser 40.

In addition, the water vapor separated by the evaporation from the absorbent liquid in the low temperature regenerator 30 passes through the eliminator between the low temperature regenerator 30 and the condenser 40, enters the condenser, and passes through the outlet pipe 33 of the heat exchange tube group to the condenser. After condensing with the cooling water flowing into the above-mentioned condenser-side cooling water heat pipe group 41 together with the incoming refrigerant vapor (water and water vapor), the refrigerant evaporates while entering the evaporator 50 through the refrigerant liquid downflow pipe 42 and evaporating. 50) Cool the cold water flowing through the cold water heat pipe group 51 therein. The refrigerant accumulated in the evaporator is dispersed again on the evaporator through the refrigerant circulation pipe 52 so that evaporation continues.

Water vapor generated by evaporation of the refrigerant in the evaporator 50 passes through an eliminator disposed between the evaporator 50 and the absorber 10, enters the absorber 10, and is continuously absorbed by the concentrated solution dispersed in the absorber. Absorption heat generated in the process is cooled by the absorber side cooling water heat pipe group (11).

As shown in FIG. 1, the absorption type cold and hot water water generator is capable of continuous operation by performing regeneration, condensation, evaporation, and absorption processes by heat exchangers arranged to the left and right, respectively.

However, according to the absorption chiller according to the prior art, since the only energy source for operating the absorption chiller is the amount of heat supplied to the high temperature regenerator, there has been a problem that the amount of fuel required by the high temperature regenerator is large. In addition, there is a fear that the absorption type cold and hot water according to the prior art precipitates the lithium bromide crystals in the rich solution inside the low-temperature solution heat exchanger, and due to the precipitation of the crystals, the absorption of the concentrated solution may not work smoothly. Concerns have existed.

Accordingly, it is an object of the present invention to provide an absorption chiller that solves the problems according to the prior art.

Specifically, it is an object of the present invention to provide an absorption chiller that can reduce the fuel consumption of the high temperature regenerator.

In addition, another object of the present invention is to provide an absorption cold and hot water machine capable of improving the overall system efficiency.

In addition, another object of the present invention is to simplify the piping provided in the absorption chiller while improving the overall system efficiency and to provide an absorption chiller that does not increase the overall size.

In addition, another object of the present invention is to provide an absorption cold and hot water machine that can maintain the flow of the concentrated solution smoothly and can always operate stably.

According to an embodiment of the present invention for solving the above problems, the present invention is an absorption chiller, including a high temperature regenerator, a low temperature regenerator, a condenser, an evaporator, and an absorber, in the lean solution produced in the absorber and the low temperature regenerator A low temperature solution heat exchanger including a rich solution heat pipe group therein to heat exchange the separated rich solution; A lean solution pipe connecting the absorber and the high temperature regenerator such that the lean solution generated in the absorber flows to the high temperature regenerator via the low temperature solution heat exchanger; A first pipe connecting the low temperature regenerator and the rich solution heat transfer tube group so that the concentrated solution separated from the low temperature regenerator flows to the low temperature solution heat exchanger; And a second pipe connecting the rich solution heat pipe group and the absorber to allow the concentrated solution passing through the low temperature solution heat exchanger to flow into the absorber, wherein the bypass pipe is disposed between the first pipe and the second pipe. Is provided, the bypass pipe provides an absorption cold and hot water heater, characterized in that it comprises a backflow prevention portion.

In addition, preferably, the backflow prevention unit is characterized in that the check valve.

In addition, preferably, the backflow prevention unit is installed to prevent the rich solution from flowing from the second pipe to the first pipe.

Also, preferably, the low temperature regenerator may be in communication with an intermediate solution pipe connecting the high temperature regenerator and the low temperature regenerator to distribute the intermediate solution into the low temperature regenerator, and the lower portion of the intermediate solution spreader. And an auxiliary heat source regenerator for heating the intermediate solution using heat energy supplied from an auxiliary heat source unit, and a refrigerant heat pipe group disposed under the auxiliary heat source regenerator and connected to the refrigerant steam pipe. .

In addition, preferably, the heat energy supplied from the auxiliary heat source unit is characterized in that the renewable energy.

In addition, the auxiliary heat source is characterized in that at least one of the solar module, solar module, underground heat exchanger and array boiler.

Preferably, the auxiliary heat source regenerator is connected to the auxiliary heat source unit through a first auxiliary storage tank in which the intermediate solution is stored, a first heat transfer medium inlet pipe, and a first heat transfer medium outlet pipe. And a first auxiliary heat pipe group positioned inside the storage tank.

Preferably, the first auxiliary storage tank is provided on a bottom surface, a side surface extending upward from the bottom surface, and a part of the side surface, when the water surface of the intermediate solution reaches a predetermined height of the side surface. It characterized in that it comprises a dripping groove for allowing the intermediate solution to flow down.

In addition, preferably, the absorption cold / hot water machine includes a first intermediate pipe connecting the first heat transfer medium inlet pipe and the refrigerant steam pipe, an outlet pipe connecting the outlet of the refrigerant heat pipe group and the condenser, and the first heat transfer. And further comprising a second intermediate pipe connecting the medium outlet pipe.

Further, preferably, a first three-way valve is provided at a connection portion of the first heat transfer medium inlet pipe and the first intermediate pipe, and a second three-way valve is provided at the connection portion of the first heat transfer medium outlet pipe and the second intermediate pipe. It is characterized in that the three-way valve is provided.

In addition, preferably, the absorption cold / hot water control unit controls the first three-way valve and the second three-way valve and the first three-way valve and the second three-way valve respectively provided corresponding to the first intermediate pipe and the second intermediate pipe. The control unit further comprises a control unit, wherein the control unit is the first heat transfer medium inlet pipe and the first heat transfer medium outlet pipe when the heat energy supplied from the first auxiliary heat source unit is insufficient to separate the refrigerant vapor from the intermediate solution It is characterized in that for closing and opening the first intermediate pipe and the second intermediate pipe.

Preferably, the auxiliary heat source regenerator may include a first auxiliary heat source regenerator disposed under the intermediate solution dispersing unit and connected to a first auxiliary heat source unit, and disposed below the first auxiliary heat source regenerator and a second one. And a second auxiliary heat source regeneration unit connected to the auxiliary heat source unit.

Preferably, the first auxiliary heat source regeneration unit includes a first auxiliary storage tank for storing the intermediate solution supplied from the intermediate solution dispersion unit, a first heat transfer medium inlet pipe, and a first heat transfer medium outlet pipe. A second auxiliary heat storage tube group connected to an auxiliary heat source unit and positioned inside the first auxiliary storage tank, and the second auxiliary heat source regeneration unit is a second auxiliary storage tank in which the intermediate solution flowing from the first auxiliary storage tank to the bottom is stored; And a second auxiliary heat transfer tube group connected to the second auxiliary heat source unit through a second heat transfer medium inlet pipe and a second heat transfer medium outlet pipe and positioned inside the second auxiliary storage tank.

Further, preferably, the first auxiliary storage tank and the second auxiliary storage tank are provided on a bottom surface, a side surface extending upward from the bottom surface, and a part of the side surface so that the water surface of the intermediate solution is formed on the side surface. It characterized in that it comprises a dripping groove for allowing the intermediate solution to flow down when reaching a predetermined height.

Further, preferably, the first auxiliary storage tank, the second auxiliary storage tank and the storage tank of the low temperature regenerator are arranged in a step shape.

In addition, preferably, the absorption cold / hot water machine connects the first heat transfer medium inlet pipe and the second heat transfer medium inlet pipe to the refrigerant vapor pipe, and includes a first intermediate pipe and a third intermediate pipe, and the first refrigerant heat pipe group. And a second intermediate pipe and a fourth intermediate pipe connecting the first outlet pipe and the second outlet pipe of the second refrigerant heat pipe group to the first heat transfer medium outlet pipe and the second heat transfer medium outlet pipe. The first intermediate pipe to the fourth intermediate pipe is characterized in that it comprises a first three-way valve to the fourth three-way valve to correspond to the first intermediate pipe to the fourth intermediate pipe, respectively.

Preferably, the absorption cold / hot water machine further includes a control unit for controlling the first three-way valve to the fourth three-way valve, wherein the control unit is at least one of the first auxiliary heat source unit and the second auxiliary heat source unit. If the heat energy supplied from the auxiliary heat source unit is insufficient to separate the refrigerant vapor from the intermediate solution, the heat transfer medium inlet tube and the heat transfer medium outlet tube of the at least one auxiliary heat source unit are closed, and the heat transfer medium of the at least one auxiliary heat source unit. It characterized in that the opening of the intermediate pipes provided in the inlet pipe and the heat transfer medium.

According to the above problem solving means, the present invention can reduce the fuel consumption of the high temperature regenerator, thereby providing an environmentally friendly absorption cold and hot water heater.

In addition, the present invention can provide an environmentally friendly absorption cold and hot water heater because it can be supplemented by using the renewable energy for the shortage of the thermal energy provided to the low temperature regenerator according to the reduction of fuel consumption of the high temperature regenerator.

In addition, the present invention can maintain the performance of the absorption type cold water heater while reducing the amount of fuel consumed in the high temperature regenerator, and as a result can improve the overall system efficiency of the absorption type cold water heater.

In addition, the present invention can simplify the piping provided to the absorption chiller while improving the overall system efficiency and can provide a cryogenic regenerator and absorption chiller that does not increase the overall size.

In addition, the present invention can smoothly maintain the flow of the concentrated solution in the concentrated solution piping and low-temperature solution heat exchanger to ensure that the absorbent cold and hot water can always operate stably, thereby improving the overall system efficiency of the absorbent cold and hot water heater.

1 is a schematic system diagram of an absorption chiller according to the prior art.
Figure 2 is a schematic diagram of an absorption cold and hot water heater according to an embodiment of the present invention.
3A to 3C are schematic diagrams of an absorption type cold and hot water machine having an additional heat source regeneration unit according to the first to third embodiments of the present invention.
4 is a schematic diagram of a low temperature regenerator according to an embodiment of the present invention.
5 is a schematic diagram of a low temperature regenerator according to another embodiment of the present invention.
Figure 6 is a schematic enlarged partial view of the absorption chiller with a rich solution piping according to an embodiment of the present invention.
7A and 7B are schematic diagrams showing the flow of the concentrated solution of the rich solution pipe of FIG. 6 when the low temperature solution heat exchanger is normally operated and when the lithium bromide crystal is generated at the low temperature solution heat exchanger.

Hereinafter, an outdoor unit of an air conditioning system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

Figure 2 is a schematic diagram of the absorption chiller hot water 1000 according to an embodiment of the present invention.

As shown in Figure 2, the absorption type cold and hot water heater 1000 according to an embodiment of the present invention, the indoor unit 100 for cooling or heating the air conditioning space by heat-exchanging the cold water and air in the air conditioning space, heat exchange the cooling water and outdoor air A large amount of refrigerant (or refrigerant vapor) in a lithium bromide (LiBr) solution, which is an outdoor unit 200 that controls the temperature of the cooling water, and a refrigerant (that is, water (hereinafter, refrigerant liquid) or water vapor (hereinafter, refrigerant vapor)) absorbent. Absorber 300 (absorber) that absorbs to produce a lean solution, the lean solution generated by the absorber 300 is heated by an external heat source 410 (for example, a burner) to the lean solution intermediate And an intermediate solution separated from the high temperature regenerator 400 by using a high temperature generator 400 separating the refrigerant vapor from the high temperature regenerator 400 and the thermal energy of the high temperature refrigerant vapor separated from the high temperature regenerator 400. Low separation into refrigerant steam Regenerator 500 (low temperature generator), the condenser 600, the condenser 600 to condense the refrigerant vapor to the refrigerant liquid by heat-exchanging the refrigerant vapor separated from the low temperature regenerator 500 with the coolant connected to the outdoor unit 200 After the refrigerant liquid condensed in the and the refrigerant vapor supplied from the high temperature regenerator 400 generates heat in the low temperature regenerator 500, the condensed refrigerant liquid is exchanged with cold water of the indoor unit 100 to evaporate the refrigerant liquid into the refrigerant vapor. And a control unit (not shown) for controlling the pipes and valves connected to the above-described devices and the above-described devices. At this time, the refrigerant vapor evaporated from the evaporator 700 is supplied to the absorber 300 through the evaporator side eliminator 703, separated from the low temperature regenerator 500 and supplied to the absorber 300. It is absorbed into and thus forms lean solution.

Here, the lean solution, the intermediate solution and the concentrated solution are classified according to the concentration of lithium bromide contained in the lithium bromide (LiBr) solution as a refrigerant absorber. The greater the concentration of lithium bromide, the higher the absorbency of the refrigerant. Therefore, the absorbent of the refrigerant is higher in the order of the concentrated solution, the intermediate solution and the lean solution, and the high temperature regenerator 400 and the low temperature regenerator 500 have low absorbency of the refrigerant and the intermediate The refrigerant vapor is separated from the solution to recover (or regenerate) the refrigerant absorbing power of the lithium bromide solution.

Absorption cold water heater 1000 according to an embodiment of the present invention, the low-temperature solution heat exchanger 800 and the absorber (300) for heat-exchanging the lean solution generated in the absorber 300 and the concentrated solution separated from the low temperature regenerator (500) It further comprises a high temperature solution heat exchanger 900 for heat-exchanging the lean solution generated in the) and the intermediate solution separated from the high temperature regenerator (400).

In addition, the absorption chiller 1000 further includes an auxiliary heat source regenerator 550 inside the low temperature regenerator 500. The auxiliary heat source regenerator 550 is connected to the auxiliary heat source unit 560 through a heat transfer medium and / or heat transfer medium pipe, and the heat energy supplied from the auxiliary heat source unit 560 is new and renewable energy. . This will be described in more detail below with reference to the drawings.

Hereinafter, with reference to Figure 2 will be described in detail with respect to each component of the absorption type cold and hot water heater 1000 according to an embodiment of the present invention.

As shown in FIG. 2, the indoor unit 100 includes a fan 101 for forcing the air in the air conditioning space to the inside of the indoor unit 100 through an air inlet, and a driving motor 103 for driving the fan 101. ), The indoor unit side cold water heat pipe group 105 (that is, the indoor unit 100 side heat exchanger) disposed in front of the fan 101 to exchange heat with air in the air conditioning space, and the indoor unit side cold water heat pipe group 105 It is disposed in front of the air discharge port for cooling or heated air discharge port 109 is included.

The indoor unit side cold water heat pipe group 105 is a pipe through which cold water flows as a refrigerant, and the indoor unit side cold water heat pipe group 105 is an evaporator side cold water heat pipe group 107 disposed inside the evaporator 700 through the cold water pipe 106. ) That is, the indoor unit side cold water heat pipe group 105, the cold water pipe 106, and the evaporator side cold water heat pipe group 107 form a closed circulation circuit.

Although not shown in the drawings, the outdoor unit 200 is a device for controlling the temperature of the outdoor air (eg, cooling the cooling water) by exchanging the coolant circulated with the absorber 300 and the condenser 600 with the outdoor air.

The outdoor unit 200 may be configured as, for example, a cooling tower. In detail, the outdoor unit 200 includes a main body having an air discharge port 109 formed at an upper portion thereof and an air suction hole formed at a side thereof, and installed in the air discharge port 109 to forcibly suck external air into the main body. And a blowing fan 101 for forcibly discharging the external air to the air discharge port 109 and the cooling water installed in the upper part of the main body part and heat-exchanged by the condenser 600 toward the lower part of the main body part through an injection part. A coolant inlet pipe, a coolant collector configured to collect and cool the coolant injected from the coolant inlet tube by heat exchange with external air, and a coolant outlet tube communicating with the coolant collector to supply the coolant to the condenser 600. It includes. The cooling water inlet pipe and the cooling water outlet pipe are part of the cooling water pipe 211.

The coolant pipe 211 connected to the outdoor unit 200 is connected to the absorber side coolant heat pipe group 213 installed inside the absorber 300, thereby absorbing the heat of absorption generated when the refrigerant vapor is absorbed into the rich solution as the coolant. do. In addition, the cooling water pipe 211 is connected to the condenser-side cooling water heat pipe group 215 installed inside the condenser 600, thereby heat-exchanging the refrigerant steam separated from the cooling water and the low temperature regenerator 500 to convert the refrigerant vapor into the refrigerant liquid. To condense.

As shown in FIG. 2, the absorber 300 and the evaporator 700 are arranged side by side in one shell, and a lean solution of the absorber 300 is disposed between the absorber 300 and the evaporator 700. The side partition wall 701 which prevents the refrigerant liquid from the evaporator 700 from moving toward the absorber 300 and the evaporator side elimine disposed above the side partition wall 701 while preventing it from moving toward the evaporator 700. Data 703 is provided. The evaporator side eliminator 703 allows the refrigerant vapor generated in the evaporator 700 to be moved toward the absorber 300, while the refrigerant vapor and the rich solution contained in the absorber 300 are transferred to the evaporator 700. This component prevents movement.

The evaporator 700 exchanges the refrigerant liquid of the condenser 600 and the cold water of the indoor unit 100 to evaporate the refrigerant liquid into the refrigerant vapor, and the refrigerant vapor is absorbed into the absorber 300 through the evaporator side eliminator 703. Supply.

The evaporator 700 is connected to the condenser 600 through a refrigerant liquid pipe 607 allowing the refrigerant liquid to flow. That is, the refrigerant liquid of the condenser 600 is supplied to the evaporator 700 through the refrigerant liquid pipe 607.

The evaporator 700 includes a refrigerant liquid supply part connected to a refrigerant liquid pipe 607 connected to the condenser 600, an evaporator storage tank 705 storing refrigerant fluid, a lower part of the evaporator storage tank 705, and an upper part of the evaporator 700. Refrigerant liquid circulation tube 707 for connecting the refrigerant liquid circulation unit 709 connected to one end of the refrigerant liquid circulation tube 707 and installed on the evaporator 700, and cold water of the indoor unit 100 Evaporator side cold water heat pipe group 107 connected to the pipe 106.

A refrigerant liquid pump 708 is installed in the refrigerant liquid circulation pipe 707, and the refrigerant liquid pump forces the refrigerant liquid stored in the evaporator storage tank 705 to the refrigerant liquid dispersion unit 709 installed on the evaporator 700. To flow.

The evaporator side cold water heat pipe group 107 is disposed between the refrigerant liquid dispersion unit 709 and the evaporator storage tank 705.

An absorber 300 is disposed on an inner side of the evaporator 700, and a side partition 701 and an evaporator side eliminator 703 are provided between the evaporator 700 and the absorber 300 as described above. .

The absorber 300 absorbs the refrigerant vapor generated from the evaporator 700 in the concentrated solution separated in the low temperature regenerator 500 to generate a lean solution.

The absorber 300 receives the rich solution from the rich solution pipe 503 connected to the low temperature regenerator 500 and the concentrated solution dispersion unit 509 for dispersing the rich solution into the absorber 300, and the refrigerant vapor in the rich solution. Absorber storage tank 310 for storing the lean solution generated by absorbing the water and the absorber side cooling water heat pipe group 213 connected to the cooling water pipe 211 of the outdoor unit 200 to remove the heat of absorption of the refrigerant absorber with the cooling water. do.

In this case, the absorber side coolant heat pipe group 213 is disposed between the absorbent solution spreader and the absorber storage tank 310.

The lower part of the absorber storage tank 310 is provided with a lean solution pipe 301 to allow the lean solution stored in the absorber storage tank 310 to be supplied to the high temperature regenerator 400. The lean solution pipe 301 is provided with a lean solution pump 303 for forcibly flowing the lean solution from the absorber 300 to the high temperature regenerator 400.

The lean solution pipe 301 passes through the low temperature solution heat exchanger 800 and the high temperature solution heat exchanger 900 before reaching the high temperature regenerator 400. The low temperature solution heat exchanger (800) has a structure in which the lean solution pipe (301) and the rich solution pipe (503) can exchange heat, so that the rich solution separated from the low temperature regenerator (500) and the lean solution generated from the absorber (300). The heat exchanger primarily raises the temperature of the lean solution, and the high temperature solution heat exchanger 900 has a structure in which the lean solution pipe 301 and the intermediate solution pipe 406 can exchange heat, and are separated from the high temperature regenerator 400. The intermediate solution and the lean solution generated in the absorber 300 are heat-exchanged to raise the temperature of the lean solution secondarily.

Preferably, the lean solution bypass pipe 302 is added to the lean solution pipe 301 to prevent the lean solution from passing through the low temperature solution heat exchanger 800 when the heat exchange performance of the low temperature solution heat exchanger 800 is lowered. It may be provided as.

The lean solution pipe 301 is connected to the high temperature regenerator 400 to supply the lean solution to the high temperature regenerator 400.

The high temperature regenerator 400 separates the lean solution into an intermediate solution and a refrigerant vapor by applying external heat energy to the lean solution supplied through the lean solution pipe 301.

The high temperature regenerator 400 is a high temperature regenerator storage tank 403 for storing the lean solution or a lean solution flow tube through which the lean solution flows, and an external heat source for supplying external heat energy to the high temperature regenerator storage tank 403 or the lean solution flow tube ( 410, a refrigerant vapor outlet 407 connected to the refrigerant vapor pipe 408 and discharging the refrigerant steam separated by the external heat energy applied from the external heat source 410, and the external heat applied from the external heat source 410. Intermediate solution outlet 405 which discharges the intermediate solution separated by thermal energy and is connected to the intermediate solution pipe 406.

The external heat source 410 may preferably be a burner using LPG or LNG as fuel.

As a further embodiment, as shown in Figure 2, the other end of the lean solution pipe 301 is provided with a three-way valve (305), one of the two outlets of the three-way valve 305 The outlet of the is connected to the high temperature regenerator side pipe 307 is connected to the high temperature regenerator 400, the other outlet is connected to the exhaust gas heat exchanger side pipe 308 is connected to the exhaust gas heat exchanger (450). The three-way valve 305 is controlled by a control unit of the absorption chiller.

The exhaust gas heat exchanger 450 separates the intermediate solution and the refrigerant vapor from the lean solution in advance before the high temperature regenerator 400 by using the thermal energy of the exhaust gas discharged from the external heat source 410 of the high temperature regenerator 400, The refrigerant vapor is discharged through the exhaust gas heat exchanger side refrigerant vapor outlet 451 provided in the exhaust gas heat exchanger 450, and the exhaust gas heat exchanger side refrigerant vapor outlet 451 is connected to the refrigerant steam pipe 408. In addition, the exhaust gas heat exchanger 450 supplies the intermediate solution separated by the lean solution and / or the thermal energy of the exhaust gas to the high temperature regenerator 400.

The three-way valve 305 provided at the other end of the lean solution pipe 301 has a lean solution when the heat energy of the exhaust gas of the high temperature regenerator 400 is sufficient to separate the lean solution into the intermediate solution and the refrigerant vapor. The high temperature regenerator side pipe 307 is closed and the exhaust gas heat exchanger side pipe 308 is opened to be supplied to the high temperature regenerator 400 via the 450.

Thus, by providing a three-way valve and the exhaust gas heat exchanger 450, it is possible to save the thermal energy of the external heat source 410 to be applied to the high temperature regenerator 400, thereby reducing the amount of fuel consumed in the external heat source 410 You can.

The refrigerant vapor separated from the high temperature regenerator 400 and the exhaust gas heat exchanger 450 or the refrigerant vapor separated from the high temperature regenerator 400 is supplied to the low temperature regenerator 500 through the refrigerant vapor pipe 408, and the refrigerant vapor pipe 408 is connected to the refrigerant heat pipe group 570 installed inside the low temperature regenerator 500 to supply refrigerant steam to the refrigerant heat pipe group 570.

The intermediate solution separated from the high temperature regenerator 400 is supplied to the low temperature regenerator 500 through the intermediate solution pipe 406, and the intermediate solution pipe 406 flows through the lean solution pipe 301 while passing through the high temperature solution regenerator. Heat exchange the lean and intermediate solutions.

As shown in FIG. 2, the low temperature regenerator 500 and the condenser 600 are disposed side by side in one shell, and the low temperature regenerator 500 and the condenser 600 are disposed in the low temperature regenerator 500. The side partition wall 601 and the side partition wall 601 which prevent the separated lean solution from moving toward the condenser 600 and prevent the refrigerant liquid condensed in the condenser 600 from moving toward the low temperature regenerator 500. A condenser side eliminator 603 is disposed above. The condenser side eliminator 603 allows the refrigerant vapor separated from the low temperature regenerator 500 to move toward the condenser 600, while the refrigerant vapor contained in the condenser 600 moves toward the low temperature regenerator 500. It is a component that prevents it.

In addition, the lower portion of the low temperature regenerator 500 (that is, the lower portion of the low temperature regenerator storage tank 501) and the lower portion of the condenser 600 are connected to the outlet pipe, and are supplied through the refrigerant steam pipe 408 to supply the low temperature regenerator 500. Refrigerant vapor and / or refrigerant vapor condensed with the refrigerant vapor is supplied to the condenser 600 through the outlet pipe. In this way, the refrigerant vapor supplied from the low temperature regenerator 500 toward the condenser 600 is condensed by the coolant heat transfer tube group in the condenser 600, and / or the refrigerant liquid supplied from the low temperature regenerator 500 toward the condenser 600. The refrigerant liquid stored in the condenser storage tank 605 is stored in the condenser storage tank 605.

The low temperature regenerator 500 separates the intermediate solution separated from the high temperature regenerator 400 into a rich solution and a refrigerant vapor using thermal energy of the high temperature refrigerant vapor separated from the high temperature regenerator 400.

The low temperature regenerator 500 is in contact with an intermediate solution pipe 406 connected to the high temperature regenerator 400, and the intermediate solution spreader 409 disperses the intermediate solution into the low temperature regenerator 500, and the intermediate solution spreader. An auxiliary heat source regenerator 550 disposed below the auxiliary heat source unit 560 and heating the intermediate solution using the thermal energy supplied from the auxiliary heat source unit 560, and a low temperature regenerator storage tank disposed below the auxiliary heat source regenerator 550. Located in 501 and includes a refrigerant heat pipe group 570 connected to the refrigerant steam pipe 408.

The low temperature regenerator 500 according to an embodiment of the present invention primarily separates the intermediate solution supplied from the intermediate solution spreader 409 into the concentrated solution and the refrigerant vapor through the auxiliary heat source regenerator 550 disposed thereon. The intermediate solution, which is not separated from the auxiliary heat source regenerator 550, is secondarily separated into the concentrated solution and the refrigerant vapor through the refrigerant heat pipe group 570 disposed under the auxiliary heat source regenerator 550.

Preferably, the auxiliary heat source regenerator 550 may be provided in plurality up and down.

The low temperature regenerator 500 will be described in more detail below with reference to the drawings.

A condenser 600 is disposed on an inner side surface of the low temperature regenerator 500, and a side partition 601 and a condenser side eliminator 603 are disposed between the low temperature regenerator 500 and the condenser 600 as described above. It is provided.

The condenser 600 heat-exchanges the refrigerant vapor of the low temperature regenerator 500 passing through the condenser side eliminator 603 and the cooling water of the outdoor unit 200 to condense the refrigerant vapor into the refrigerant liquid, and the refrigerant liquid is condenser storage tank ( 605).

The condenser 600 is connected to the evaporator 700 through the refrigerant liquid pipe 607 to allow the refrigerant liquid to flow to the evaporator 700. In addition, an outlet pipe is connected to a lower portion of the condenser 600 so that refrigerant vapor and / or refrigerant liquid via the low temperature regenerator 500 may be supplied to the condenser 600 through the refrigerant heat pipe group 570. The outlet pipe is connected to the refrigerant heat pipe group 570.

The condenser 600 is disposed between the condenser storage tank 605 in which the refrigerant liquid is stored, the condenser side eliminator 603 and the condenser storage tank 605, and is connected to the cooling water pipe 211, and is connected to the cooling water pipe 211. 215).

Hereinafter, the low temperature regenerator 500 having the auxiliary heat source regenerator 550 connected to the auxiliary heat source units 560 according to the first to third embodiments of the present invention will be described.

3A to 3C are schematic views of a low temperature regenerator 500 having an auxiliary heat source regenerator 550 connected to the auxiliary heat source unit 560 according to the first to third embodiments of the present invention.

As shown in Figures 3a to 3c, the low temperature regenerator 500 according to the present invention, the intermediate solution generated in the high temperature regenerator 400 is separated into a rich solution and a refrigerant vapor and the refrigerant vapor through an eliminator A low temperature regenerator 500 of the absorption type cold water heater 1000 that is delivered to the condenser 600, which is in communication with the intermediate solution pipe 406 connected to the high temperature regenerator 400 to distribute the intermediate solution into the low temperature regenerator 500. An intermediate solution spreader 409; At least one auxiliary heat source regenerator 550 disposed under the intermediate solution spreading unit 409 and heating the intermediate solution using thermal energy supplied from at least one auxiliary heat source unit 560; A low temperature regenerator storage tank disposed below the auxiliary heat source regenerator 550 and storing an intermediate solution in which the refrigerant vapor is not separated from the auxiliary heat source regenerator 550; A refrigerant heat pipe group 570 is disposed in the low temperature regenerator storage tank 501 and connected to the refrigerant steam pipe 408.

In this case, the low temperature regenerator 500 is controlled by a control unit of the absorption type cold and hot water generator 1000.

Preferably, the heat energy supplied from the auxiliary heat source unit 560 may be renewable energy. For example, the thermal energy supplied from the auxiliary heat source unit 560 is solar energy, photo-voltaic energy, geothermal energy, biomass energy, heat energy. (energy of waste heat), waste energy, and the like.

As shown in FIGS. 3A to 3C, the auxiliary heat source unit 560 is, for example, one of a solar module 569, a solar module 569, a geothermal heat exchanger 567, and an array boiler 565. When the auxiliary heat source unit 560 is provided in plurality, the auxiliary heat source unit 560 is one of a solar module, a solar module, an underground heat exchanger, and an array boiler, and the plurality of auxiliary heat source units 560 are the same auxiliary heat source. Negative or different auxiliary heat source portions.

Although not shown, the auxiliary heat source may be an exhaust gas discharge part of the high temperature regenerator 400. That is, the thermal energy supplied from the auxiliary heat source unit may be an array energy of exhaust gas discharged from the high temperature regenerator 400.

The auxiliary heat source regenerator 550 includes at least one auxiliary heat source regenerator. Each of the auxiliary heat source regenerators includes an auxiliary storage tank for storing the intermediate solution supplied from the intermediate solution dispersion unit 409 of the low temperature regenerator 500, and an auxiliary heat transfer tube group located inside the auxiliary storage tank and for heating the intermediate solution. Include.

At this time, the auxiliary heat pipe group may be connected to the auxiliary heat source through each heat transfer medium inlet pipe and each heat transfer medium outlet pipe.

The heat transfer medium for transferring the (heat) energy of the auxiliary heat source unit to the auxiliary heat source regeneration unit may be one of, for example, medium temperature water, high temperature water, and steam.

In addition, when the auxiliary heat source unit is an exhaust gas discharge unit of the high temperature regenerator 400, the heat transfer medium that transfers (heat) energy of the auxiliary heat source unit to the auxiliary heat source regenerator may be exhaust gas discharged from the high temperature regenerator 400.

The auxiliary storage tank and the low temperature regenerator storage tank 501 of the at least one auxiliary heat source regenerator 550 are arranged in a step shape such that the bottom surface thereof becomes wider in the direction of the low temperature regenerator storage tank 501 in the direction of the intermediate solution spreader 409. When the intermediate solution is stored in the auxiliary algae above the height of the auxiliary storage tank in which the water surface of the intermediate solution is located above, the overflowed intermediate solution falls to another auxiliary storage tank or the low temperature regenerator storage tank 501 located below the other This is to be stored in the auxiliary storage tank or the low temperature regenerator storage tank (501).

Thus, the present invention by providing the auxiliary heat source regenerator 550 or the auxiliary heat source regeneration unit that can utilize the energy of the auxiliary heat source unit in the low temperature regenerator 500, it is possible to reduce the amount of fuel consumed in the high temperature regenerator 400, high temperature As the fuel consumption of the regenerator 400 is reduced, the renewable energy may be compensated for the shortage of the thermal energy provided to the low temperature regenerator 500, thereby providing an environment-friendly absorption cold / hot water generator 1000.

In addition, the present invention can maintain the performance of the absorption type cold water heater 1000 while reducing the amount of fuel consumed in the high temperature regenerator 400, and as a result, it is possible to improve the overall system efficiency of the absorption type cold water heater 1000.

Hereinafter, the configuration of the low temperature regenerator 500 will be described in more detail with reference to the accompanying drawings.

4 is a schematic diagram of a low temperature regenerator 500 according to an embodiment of the present invention.

As shown in FIG. 4, the low temperature regenerator 500 according to an embodiment of the present invention is generated in the high temperature regenerator 400 using heat energy supplied from one auxiliary heat source regeneration unit and a refrigerant heat transfer tube group 570. The intermediate solution is separated into a concentrated solution and a refrigerant vapor, and the refrigerant vapor is transferred to the condenser 600 through the condenser side eliminator 603.

Referring to FIG. 4, the low temperature regenerator 500 communicates with an intermediate solution pipe 406 connected to the high temperature regenerator 400 to distribute the intermediate solution 409 into the low temperature regenerator 500. At least one auxiliary heat source regenerator and a lower portion of the auxiliary heat source regenerator disposed under the intermediate solution spreading unit 409 and for heating the intermediate solution using thermal energy supplied from at least one auxiliary heat source unit. A low temperature regenerator storage tank (501) for storing an intermediate solution in which the refrigerant vapor is not separated from the auxiliary heat source regenerator, and a refrigerant heat pipe group (570) disposed inside the low temperature regenerator storage tank (501) and connected to the refrigerant steam pipe (408). It includes.

The auxiliary heat source regenerator includes a first auxiliary heat source regenerator 550. The first auxiliary heat source regeneration unit 550 includes a first auxiliary storage tank 551 for storing the intermediate solution supplied through the intermediate solution dispersing unit 409, a first heat transfer medium inlet pipe 561, and a first heat transfer method. And a first auxiliary heat pipe group 553 connected to the auxiliary heat source unit through a medium outlet pipe 563 and positioned inside the first auxiliary storage tank 551.

The first auxiliary storage tank 551 is provided on a bottom surface 551a, a side surface 551b extending upwardly from the bottom surface 551a, and a part of the side surface 551b so that the water surface of the intermediate solution is At least one lower groove for allowing the intermediate solution to flow down when reaching the predetermined height of the side (551b).

The side surface of the first auxiliary storage tank 551 is disposed spaced apart from the condenser side side partition wall 601 or the condenser side eliminator 603 by a predetermined distance.

Between the first heat transfer medium inlet pipe 561 and the refrigerant vapor pipe 408, a first intermediate pipe connecting the first heat transfer medium inlet pipe 561 and the refrigerant vapor pipe 408 to allow the refrigerant vapor to flow. 572 is provided.

In addition, a first three-way valve 573 is provided at a connection portion between the first heat transfer medium inlet pipe 561 and the first intermediate pipe 572. The first three-way valve (573) is composed of two inlets and one outlet, one inlet of the two inlet is connected to the secondary heat source portion of the first heat transfer medium inlet pipe 561, two The other inlet of the inlet is connected to the first intermediate pipe 572, and the one outlet is connected to the portion of the first auxiliary heat source regenerator 550 of the first heat transfer medium inlet 561. The first three-way valve 573 may open or close one inlet of two inlets to selectively heat the refrigerant of the heat transfer medium or the high temperature regenerator 400 supplied from the auxiliary heat source to the first auxiliary heat source regenerator 550. To be supplied as

Meanwhile, refrigerant vapor flows between the outlet pipe 571 provided between the outlet of the refrigerant heat transfer pipe group 570 of the low temperature regenerator 500 and the lower portion of the condenser 600, and the first heat transfer medium outlet pipe 563. A second intermediate pipe 574 connecting the outlet pipe 571 and the first heat transfer medium outlet pipe 563 may be provided.

In addition, a second three-way valve 575 is provided at a connection portion between the first heat transfer medium outlet pipe 563 and the second intermediate pipe 574. The second three-way valve 575 is composed of two inlets and one outlet, one inlet of the two inlet side of the first secondary heat source regeneration unit 550 of the first heat transfer medium outlet pipe 563 And an inlet of the other of the two inlets is connected to the second intermediate pipe 574, and the one outlet is connected to a portion of the auxiliary heat source side of the first heat transfer medium outlet pipe 563.

Opening and closing of the first three-way valve 573 and the second three-way valve 575 is controlled by the control unit of the absorption type cold and hot water heater (1000).

The control unit, when the thermal energy supplied from the first auxiliary heat source unit 560 is insufficient to separate the refrigerant vapor from the intermediate solution, the first heat transfer medium inlet pipe 561 and the first heat transfer medium outlet pipe 563. When the first intermediate pipe 572 and the second intermediate pipe 574 is closed and the thermal energy supplied from the first auxiliary heat source 560 is sufficient to separate the refrigerant vapor from the intermediate solution. A first heat transfer medium inlet pipe 561 and the first heat transfer medium outlet pipe 563 are opened, and the first intermediate pipe 572 and the second intermediate pipe 574 are closed.

Due to the intermediate pipe, the three-way valve provided in the intermediate pipe and the three-way valve control mechanism of the control unit described above, separating the intermediate solution supplied to the low temperature regenerator 500 with the thermal energy supplied from the auxiliary heat source unit to the concentrated solution and the refrigerant vapor. Even if it is insufficient, since the refrigerant vapor can be supplied to the first auxiliary heat pipe group 553, the first auxiliary heat pipe group 553 can be utilized, thereby ensuring a large heat transfer area between the refrigerant vapor and the intermediate solution. have.

5 is a schematic diagram of a low temperature regenerator 500 according to another embodiment of the present invention.

As shown in FIG. 5, the low temperature regenerator 500 according to another embodiment of the present invention includes a first auxiliary heat source regenerator 550, a second auxiliary heat source regenerator 580, and a refrigerant heat pipe group 570. The intermediate solution generated in the high temperature regenerator 400 is separated into a rich solution and a refrigerant vapor by using the thermal energy supplied from the high temperature regenerator, and the refrigerant vapor is transferred to the condenser 600 through the condenser side eliminator 603.

Referring to FIG. 5, the low temperature regenerator 500 communicates with an intermediate solution pipe 406 connected to the high temperature regenerator 400 to distribute the intermediate solution 409 into the low temperature regenerator 500. At least one auxiliary heat source regenerator and a lower portion of the auxiliary heat source regenerator disposed under the intermediate solution spreading unit 409 and for heating the intermediate solution using thermal energy supplied from at least one auxiliary heat source unit. A low temperature regenerator storage tank (501) for storing an intermediate solution in which the refrigerant vapor is not separated from the auxiliary heat source regenerator, and a refrigerant heat pipe group (570) disposed inside the low temperature regenerator storage tank (501) and connected to the refrigerant steam pipe (408). It includes.

The auxiliary heat source regenerator includes a first auxiliary heat source regenerator 550 disposed under the intermediate solution spreader 409 of the low temperature regenerator 500 and connected to the first auxiliary heat source 560, and the first auxiliary heat source. The second auxiliary heat source regeneration unit 580 is disposed below the regeneration unit 550 and connected to the second auxiliary heat source unit 590. A coolant heat transfer pipe group 570 is disposed below the second auxiliary heat source regeneration unit 580.

As illustrated in FIG. 5, the first auxiliary heat source regeneration unit 550 may include a first auxiliary storage tank 551 in which the intermediate solution supplied from the intermediate solution dispersion unit 409 of the low temperature regenerator 500 is stored, A first auxiliary heat pipe group 553 connected to the first auxiliary heat source part 560 through a heat transfer medium inlet pipe 561 and a first heat transfer medium outlet pipe 563 and located in the first auxiliary storage tank 551. ).

In addition, the second auxiliary heat source regeneration unit 580 includes a second auxiliary storage tank 581 in which the intermediate solution flowing down from the first auxiliary storage tank 551 is stored, and a second heat transfer medium inlet pipe 591 and a second heat storage medium. And a second auxiliary heat pipe group 583 connected to the second auxiliary heat source unit 590 through a second heat transfer medium outlet 593 and positioned inside the second auxiliary storage tank 581.

Here, preferably, the heat exchange medium supplied from the first auxiliary heat source unit 560 to the first auxiliary heat source regenerator is more thermal energy (eg, than the heat exchange medium supplied from the second auxiliary heat source unit 590 to the second auxiliary heat source regenerator). Enthalpy) may be a high heat transfer medium. For example, the heat exchange medium between the first auxiliary heat source unit 560 and the first auxiliary heat source regenerator is medium temperature or high temperature water, and between the second auxiliary heat source unit 590 and the second auxiliary heat source regenerator. The heat exchange medium may be water vapor or exhaust gas discharged from the high temperature regenerator 400.

This is because the process of separating the refrigerant vapor from the intermediate solution in the low temperature regenerator 500 is performed sequentially from the top to the bottom.

Each of the first auxiliary storage tank 551 and the second auxiliary storage tank 581 includes bottom surfaces 551a and 581a, and side surfaces 551b and 581b extending upward from the bottom surfaces 551a and 581a. And at least one dripping groove provided at a portion of the side surfaces 551b and 581b to allow the intermediate solution to flow downward when the water surface of the intermediate solution reaches a predetermined height of the side surface. .

The side surface of the first auxiliary storage tank 551 is disposed spaced apart from the condenser side side partition wall 601 or the condenser side eliminator 603 by a first predetermined distance, and the side surface of the second auxiliary storage tank 581 is a condenser side side surface. It is arranged to be spaced apart from the partition 601 or the condenser side eliminator 603 by a second predetermined distance greater than the first predetermined distance, and the lower portion of the condenser side side partition wall 601 is the side surface of the low temperature regenerator storage tank 501. To form.

That is, the first auxiliary storage tank 551, the second auxiliary storage tank 581, and the low temperature regenerator storage tank 501 are disposed in a step shape.

Between the first heat transfer medium inlet pipe 561 and the refrigerant vapor pipe 408, a first intermediate pipe connecting the first heat transfer medium inlet pipe 561 and the refrigerant vapor pipe 408 to allow the refrigerant vapor to flow. 572 is provided.

In addition, a first three-way valve 573 is provided at a connection portion between the first heat transfer medium inlet pipe 561 and the first intermediate pipe 572. The first three-way valve 573 includes two inlets and one outlet, and one of the two inlets is a portion of the first auxiliary heat source unit 560 of the first heat transfer medium inlet pipe 561. And an inlet of the other one of the two inlets is connected to the first intermediate pipe 572, and the one outlet is a portion of the first auxiliary heat source regeneration unit 550 of the first heat transfer medium inlet pipe 561. Connected with The first three-way valve 573 opens or closes one inlet of two inlets so that the heat transfer medium or the high temperature regenerator 400 is supplied from the first auxiliary heat source unit 560 to the first auxiliary heat source regenerator 550. The refrigerant vapor of to be selectively supplied.

Meanwhile, refrigerant vapor flows between the outlet pipe 571 provided between the outlet of the refrigerant heat transfer pipe group 570 of the low temperature regenerator 500 and the lower portion of the condenser 600, and the first heat transfer medium outlet pipe 563. A second intermediate pipe 574 connecting the outlet pipe 571 and the first heat transfer medium outlet pipe 563 may be provided.

In addition, a second three-way valve 575 is provided at a connection portion between the first heat transfer medium outlet pipe 563 and the second intermediate pipe 574. The second three-way valve 575 is composed of two inlets and one outlet, one inlet of the two inlet side of the first secondary heat source regeneration unit 550 of the first heat transfer medium outlet pipe 563 And an inlet of the other of the two inlets is connected to the second intermediate pipe 574, and the one outlet is a part of the first auxiliary heat source part 560 of the first heat transfer medium outlet pipe 563. Connected with

Between the second heat transfer medium inlet pipe 591 and the refrigerant steam pipe 408, a third intermediate pipe connecting the second heat transfer medium inlet pipe 591 and the refrigerant steam pipe 408 so that the refrigerant vapor flows 576 is provided.

In addition, a third three-way valve 577 is provided at a connection portion between the second heat transfer medium inlet pipe 591 and the third intermediate pipe 576. The third three-way valve (577) is composed of two inlets and one outlet, one inlet of the two inlet portion of the second auxiliary heat source 590 side of the second heat transfer medium inlet tube 591 And an inlet of the other one of the two inlets is connected to the third intermediate pipe 576, and the one outlet is a portion of the second auxiliary heat source regeneration unit 580 of the second heat transfer medium inlet 591. Connected with The third three-way valve 577 opens or closes one inlet of two inlets so that the heat transfer medium or the high temperature regenerator 400 is supplied from the second auxiliary heat source 590 to the second auxiliary heat source regenerator 580. The refrigerant vapor of to be selectively supplied.

Meanwhile, refrigerant vapor flows between the outlet pipe 571 provided between the outlet of the refrigerant heat transfer pipe group 570 of the low temperature regenerator 500 and the lower portion of the condenser 600, and the second heat transfer medium outlet pipe 593. A fourth intermediate pipe 578 is provided to connect the outlet pipe 571 and the second heat transfer medium outlet pipe 593 to each other.

In addition, a fourth three-way valve 579 is provided at a connection portion between the second heat transfer medium outlet pipe 593 and the fourth intermediate pipe 578. The second three-way valve 575 is composed of two inlets and one outlet, one inlet of the two inlet side of the second auxiliary heat source regeneration unit 580 of the second heat transfer medium outlet pipe 593 And an inlet of the other of the two inlets is connected to the fourth intermediate pipe 578, and the one outlet is a part of the second auxiliary heat source part 590 of the second heat transfer medium outlet pipe 593. Connected with

Opening and closing of the first three-way valve 573 to the fourth three-way valve 579 is controlled by the control unit of the absorption type cold and hot water heater (1000).

The control unit, when the thermal energy supplied from at least one auxiliary heat source unit of the first auxiliary heat source unit 560 and the second auxiliary heat source unit 590 is insufficient to separate the refrigerant vapor from the intermediate solution. Closing the heat transfer medium inlet pipe and the heat transfer medium outlet pipe of the at least one auxiliary heat source part, open the heat transfer medium inlet pipe of the at least one auxiliary heat source part and the intermediate pipes provided in the heat transfer medium, and the first auxiliary heat source part 560. And heat transfer medium inlet pipe and heat transfer medium outlet of the at least one auxiliary heat source unit when the heat energy supplied from at least one auxiliary heat source unit of the second auxiliary heat source unit 590 is sufficient to separate the refrigerant vapor from the intermediate solution. Opening the tube and provided in the heat transfer medium inlet tube and the heat transfer medium of the at least one auxiliary heat source Close the liver lines.

For example, the controller determines that the thermal energy supplied from the first auxiliary heat source unit 560 is sufficient to separate the intermediate solution supplied to the low temperature regenerator 500 into the concentrated solution and the refrigerant vapor, and the second auxiliary heat source unit 590. If it is determined that the thermal energy supplied from the) is insufficient to separate the intermediate solution supplied to the low temperature regenerator 500 into the concentrated solution and the refrigerant vapor, the control unit is the first heat transfer medium inlet pipe 561 and the first heat transfer medium outflow While opening the pipe 563 and closing the first intermediate pipe 572 and the second intermediate pipe 574, and closing the second heat transfer inlet pipe 591 and the second heat transfer medium outlet pipe 593, The third intermediate pipe 576 and the fourth intermediate pipe 578 are opened.

Due to the intermediate pipe, the three-way valve provided in the intermediate pipe and the three-way valve control mechanism of the control unit described above, separating the intermediate solution supplied to the low temperature regenerator 500 with the thermal energy supplied from the auxiliary heat source unit to the concentrated solution and the refrigerant vapor. Even if it is insufficient, since the refrigerant vapor can be supplied to the first auxiliary heat pipe group 553 and the second auxiliary heat pipe group 583, the first auxiliary heat pipe group 553 and the second auxiliary heat pipe group 583 can be utilized. As a result, it is possible to secure a large heat transfer area between the refrigerant vapor and the intermediate solution.

6 is a schematic enlarged partial view of an absorbent cold water heater 1000 having a rich solution piping 503 according to an embodiment of the present invention, and FIGS. 7A and 7B illustrate a low temperature solution heat exchanger 800 operating normally. And a schematic diagram showing the flow of the concentrated solution of the concentrated solution piping 503 of FIG. 6 according to the case where lithium bromide crystals are produced in the low temperature solution heat exchanger 800.

As described above, the concentrated solution separated from the low temperature regenerator 500 in the absorption type cold and hot water generator 1000 according to an embodiment of the present invention is a concentrated solution pipe 503 connecting the low temperature regenerator 500 and the absorber 300. It is supplied to the absorber 300 through.

In addition, the low temperature solution heat exchanger 800 includes a rich solution heat pipe group 508 for heat-exchanging the lean solution generated in the absorber 300 and the concentrated solution separated from the low temperature regenerator 500 therein, and the low temperature solution The heat exchanger 800 passes through the low temperature solution heat exchanger 800 such that the lean solution generated in the absorber 300 flows to the high temperature regenerator 400 after passing through the low temperature solution heat exchanger 800. At least a portion of the lean solution pipe 301 connecting the 300 and the high temperature regenerator 400. The rich solution heat pipe group 508 is a rich solution flows therein, the inlet and outlet of the rich solution is connected to the rich solution pipe 503.

As shown in FIGS. 6, 7A and 7B, the rich solution pipe 503 may include a first pipe 503a connecting a lower portion of the low temperature regenerator 500 storage tank and an inlet of the rich solution heat pipe group 508. A second pipe 503b connecting the outlet of the concentrated solution heat pipe group 508 and the concentrated solution spreading unit 509 installed inside the absorber 300, the first pipe 503a and the second pipe; And a bypass pipe 505 for connecting 503b and a backflow prevention part 504 provided in a portion of the bypass pipe 505.

The first pipe 503a connects the low temperature regenerator 500 and the rich solution heat transfer tube group 508 so that the concentrated solution separated from the low temperature regenerator 500 can flow to the low temperature solution heat exchanger 800. 2 pipe 503b is concentrated solution heat pipe group 508 and the absorber 300 (that is, the absorber) so that the concentrated solution heat exchanged with the lean solution while passing through the low temperature solution heat exchanger 800 flows into the absorber 300 Connect the rich solution dispersion unit 509 provided therein (300).

The bypass pipe 505 is a portion of the first pipe 503a positioned before the low temperature solution heat exchanger 800 and the second pipe 503b disposed after the low temperature solution heat exchanger 800 based on the flow of the rich solution. Connect part of the).

By providing the bypass pipe 505, when the lithium bromide crystal is precipitated from the lithium bromide solution as the absorbent in the low temperature solution heat exchanger 800, the concentrated solution is transferred to the low temperature solution heat exchanger 800 in the first pipe 503a. Since it can flow to the 2nd piping 503b without passing, even if lithium bromide crystal | crystallization precipitates in the low temperature solution heat exchanger 800, the flow of a rich solution can be maintained smoothly.

However, the bypass pipe 505 is a concentrated solution flowing through the second pipe 503b when the concentrated solution passes through the low temperature solution heat exchanger 800 because lithium bromide crystals do not precipitate in the low temperature solution heat exchanger 800. There is a risk that some of the flow back to the first pipe 503a through the bypass pipe 505, thereby forming the flow resistance of the concentrated solution in the concentrated solution piping 503, thereby improving the overall efficiency of the absorption type cold and hot water heater (1000). There is a risk of inhibiting.

In order to solve the problem of the bypass pipe 505, a part of the bypass pipe 505 according to an embodiment of the present invention is provided with a backflow prevention portion 504, the backflow prevention portion 504 is rich The solution is provided to prevent the solution from flowing from the second pipe 503b to the first pipe 503a.

As shown in FIG. 7A, when the low temperature solution heat exchanger 800 operates normally because lithium bromide crystals do not precipitate inside the rich solution heat exchanger group 508 of the low temperature solution heat exchanger 800, the low temperature regenerator 500 may be used. The rich solution separated from the first pipe 503a, the rich solution heat pipe group 508 and the second pipe 503b sequentially flows from the lower portion of the low temperature regenerator 500 storage tank, due to the backflow prevention unit 504 The rich solution can be prevented from flowing from the second pipe 503b to the first pipe 503a through the pass pipe 505. Thus, during the normal operation of the low temperature solution heat exchanger (800) it is possible to prevent the overall efficiency of the absorption type cold and hot water heater (1000) due to the backflow of the concentrated solution through the bypass pipe (505).

As shown in FIG. 7B, when the lithium bromide crystal is deposited inside the rich solution heat exchanger group 508 of the low temperature solution heat exchanger 800 and the low temperature solution heat exchanger 800 does not operate normally, the low temperature regenerator 500 may be used. The concentrated solution separated from the first pipe 503a, the bypass pipe 505, the backflow prevention part 504 and the second pipe 503b may sequentially flow from the lower portion of the low temperature regenerator 500 storage tank. Therefore, when lithium bromide crystals are precipitated from the lithium bromide solution as the absorbent in the low temperature solution heat exchanger 800, the rich solution does not pass through the low temperature solution heat exchanger 800 in the first pipe 503a and the second pipe 503b. ), It is possible to smoothly maintain the flow of the concentrated solution even when lithium bromide crystals are precipitated in the low temperature solution heat exchanger (800), and as a result, the concentrated solution heat exchanger group of the low temperature solution heat exchanger (800) Even when lithium bromide crystals are deposited at 508, it is possible to prevent the overall efficiency of the absorption type cold and hot water heater 1000 from being impaired.

As shown in FIG. 6, the backflow prevention part 504 may be preferably a check valve. By configuring the non-return check unit 504 as a check valve to allow only one-way flow, the structure of the non-return check unit 504 can be simplified because a separate control mechanism is unnecessary at the same time without requiring a separate determination sensing unit. It can facilitate the maintenance of the absorption chiller (1000).

According to the above problem solving means, the present invention can reduce the fuel consumption of the high temperature regenerator, thereby providing an environmentally friendly absorption cold and hot water heater.

In addition, the present invention can provide an environmentally friendly absorption cold and hot water heater because it can be supplemented by using the renewable energy for the shortage of the thermal energy provided to the low temperature regenerator according to the reduction of fuel consumption of the high temperature regenerator.

In addition, the present invention can maintain the performance of the absorption type cold water heater while reducing the amount of fuel consumed in the high temperature regenerator, and as a result can improve the overall system efficiency of the absorption type cold water heater.

In addition, the present invention can simplify the piping provided to the absorption chiller while improving the overall system efficiency and can provide a cryogenic regenerator and absorption chiller that does not increase the overall size.

In addition, the present invention can smoothly maintain the flow of the concentrated solution in the concentrated solution piping and low-temperature solution heat exchanger to ensure that the absorbent cold and hot water can always operate stably, thereby improving the overall system efficiency of the absorbent cold and hot water heater.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

1000: Absorption cold water heater
100: indoor unit
200: outdoor unit
300: Absorber
400: high temperature regenerator
500: low temperature regenerator
600: condenser
700: Evaporator
800: low temperature solution heat exchanger
900: high temperature solution heat exchanger

Claims (13)

Absorption cold water heater including a high temperature regenerator, a low temperature regenerator, a condenser, an evaporator and an absorber,
A low temperature solution heat exchanger including a rich solution heat exchanger tube therein to heat exchange the lean solution generated in the absorber and the concentrated solution separated in the low temperature regenerator;
A lean solution pipe connecting the absorber and the high temperature regenerator such that the lean solution generated in the absorber flows to the high temperature regenerator via the low temperature solution heat exchanger;
A first pipe connecting the low temperature regenerator and the rich solution heat transfer tube group so that the concentrated solution separated from the low temperature regenerator flows to the low temperature solution heat exchanger; And
And a second pipe connecting the rich solution heat pipe group and the absorber so that the rich solution passing through the low temperature solution heat exchanger flows into the absorber.
A bypass pipe is provided between the first pipe and the second pipe, and the bypass pipe includes a backflow prevention part.
The low temperature regenerator is in communication with an intermediate solution pipe connecting the high temperature regenerator and the low temperature regenerator, the intermediate solution dispersing unit for distributing the intermediate solution into the low temperature regenerator, and a lower portion of the intermediate solution dispersing unit. A subsidiary heat source regenerator for heating the intermediate solution using thermal energy supplied from the subsidiary heat source, and a coolant heat pipe group disposed under the subsidiary heat source regenerator and connected to a refrigerant steam pipe connecting the high temperature regenerator and the low temperature regenerator; ,
The auxiliary heat source regenerator is connected to the auxiliary heat source unit through a first auxiliary storage tank in which the intermediate solution is stored, a first heat transfer medium inlet pipe, and a first heat transfer medium outlet pipe, and is located inside the first auxiliary storage tank. Absorption-type cold and hot water machine, characterized in that it comprises one auxiliary heat pipe group. The method of claim 1,
Absorption cold water heater, characterized in that the backflow prevention unit is a check valve. The method of claim 1,
The reverse flow prevention unit is an absorption type hot and cold water heater, characterized in that the thick solution is installed to prevent the flow from the second pipe to the first pipe. delete The method of claim 1,
Heat energy supplied from the auxiliary heat source unit is an absorption type cold and hot water heater, characterized in that the renewable energy. The method of claim 1,
The auxiliary heat source unit is an absorption cold and hot water heater, characterized in that at least one of the solar module, solar module, underground heat exchanger and array boiler. delete The method of claim 1,
The first auxiliary storage tank has a bottom surface, a side surface extending from the bottom surface in an upward direction, and a portion of the side surface so that the intermediate solution moves downward when the water surface of the intermediate solution reaches a predetermined height of the side surface. Absorption chiller, characterized in that it comprises a drip groove for allowing the flow. The method of claim 1,
The absorption chiller is connected to the first intermediate pipe connecting the first heat transfer medium inlet pipe and the refrigerant steam pipe, the outlet pipe connecting the outlet of the refrigerant heat pipe group and the condenser, and the first heat transfer medium outlet pipe. Further comprising a second intermediate pipe,
The first three-way valve is provided at the connection portion of the first heat transfer medium inlet pipe and the first intermediate pipe, and the second three-way valve is provided at the connection portion of the first heat transfer medium outlet pipe and the second intermediate pipe. Absorption cold water heater characterized by the above-mentioned. The method of claim 1,
The auxiliary heat source regenerator is disposed below the intermediate solution spreader and is connected to a first auxiliary heat source unit, and is connected to a second auxiliary heat source unit and is disposed below the first auxiliary heat source regenerator. Absorption cold water heater comprising a second auxiliary heat source regeneration unit. The method of claim 10,
The first auxiliary heat source regeneration unit is connected to the first auxiliary heat source unit through a first auxiliary storage tank storing an intermediate solution supplied from the intermediate solution dispersion unit, a first heat transfer medium inlet pipe, and a first heat transfer medium outlet pipe. A first auxiliary heat pipe group positioned inside the first auxiliary storage tank,
The second auxiliary heat source regeneration unit includes a second auxiliary storage tank for storing the intermediate solution flowing down from the first auxiliary storage tank, and a second auxiliary heat source unit through a second heat transfer medium inlet pipe and a second heat transfer medium outlet pipe. And a second auxiliary heat transfer tube group connected to and located inside the second auxiliary storage tank. The method of claim 10,
The first auxiliary heat source regeneration unit includes a first auxiliary storage tank storing an intermediate solution supplied from the intermediate solution dispersing unit, and the second auxiliary heat source regeneration unit stores an intermediate solution flowing downward from the first auxiliary storage tank. A second auxiliary storage tank,
And the first auxiliary storage tank, the second auxiliary storage tank, and the storage tank of the low temperature regenerator are disposed in a step shape. The method of claim 10,
A first heat transfer medium inlet pipe and a first heat transfer medium outlet pipe connecting the first auxiliary heat pipe group to the first auxiliary heat source unit;
A second heat transfer medium inlet pipe and a second heat transfer medium outlet pipe connecting the second auxiliary heat pipe group to the second auxiliary heat source unit;
A first intermediate pipe and a third intermediate pipe connecting each of the first heat transfer medium inlet pipe and the second heat transfer medium inlet pipe to the refrigerant vapor pipe;
A second intermediate pipe and a fourth intermediate pipe connecting the first outlet pipe of the first refrigerant heat pipe group and the second outlet pipe of the second refrigerant heat pipe group to the first heat transfer medium outlet pipe and the second heat transfer medium outlet pipe; Further includes plumbing,
The first intermediate pipe to the fourth intermediate pipe absorbing cold and hot water heater, characterized in that each of the first three-way valve to the fourth three-way valve corresponding to the first intermediate pipe to the fourth intermediate pipe.

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