Absorption chiller

Abstract

The present disclosure relates to an absorption chiller. An absorption chiller of the present disclosure comprises: an evaporator that evaporates a refrigerant; an absorber in which the refrigerant evaporated in the evaporator is mixed with an absorbent to generate an absorption liquid; a regenerator that heats the absorption liquid supplied from the absorber; and a condenser to which the refrigerant generated in the regenerator is supplied. The absorber comprises: a plurality of heat transfer tubes which are arranged in the vertical direction to form a plurality of stages; and a plurality of intermediate distributors arranged between the plurality of heat transfer tubes, wherein the plurality of intermediate distributors may divide the plurality of heat transfer tubes into a plurality of tube groups arranged in predetermined stages.

Description

absorption chiller

[0001] The present disclosure relates to an absorption chiller, and more particularly, to an absorption chiller having an intermediate distributor.

[0002] A chiller supplies chilled water to a demand source. Heat exchange occurs between the refrigerant circulating in the refrigerant cycle and the chilled water circulating at the demand source, cooling the chilled water. These chillers are large-capacity units and can be installed in large buildings.

[0003] An absorption chiller is a device that can perform cooling or heating by exchanging heat between refrigerant and cold water through cycle operation using an absorbent and a refrigerant.

[0004] An absorption chiller can perform cooling or heating by utilizing the principle that the refrigerant evaporated in the evaporator is absorbed by the absorbent in the absorber, the refrigerant is evaporated as the absorbent liquid that has absorbed the refrigerant passes through the regenerator, and the evaporated refrigerant is condensed as it passes through the condenser.

[0005] An absorption chiller includes heat transfer tubes used in an absorber and an evaporator. In the evaporator, the refrigerant outside the heat transfer tubes cools the water flowing inside the heat transfer tubes, and in the absorber, the absorbent can absorb the refrigerant as it flows along the outer surface of the heat transfer tubes.

[0006] The 'liquid distribution device' disclosed in Korean Patent No. 10-0926641 is: a liquid distribution device including a plurality of flow channels formed in the form of a passage with an open upper portion and a plurality of flow holes formed at the bottom, wherein the plurality of flow channels are arranged in accordance with the number and spacing of the horizontal arrangement of heat exchange tubes, and the liquid distribution device wets the heat exchange tube group on the upper portion and collects the flowing liquid and distributes it to the heat exchange tube group arranged on the lower portion.

[0007] The above conventional liquid distribution device has a problem in that it only discloses a liquid distribution device to be placed between a plurality of heat exchange tube groups, and does not specifically indicate how many heat exchange tubes the liquid distribution device should be placed between.

[0008] In addition, the conventional liquid distribution device has a problem in that the absorption liquid distributed from the liquid distribution device is initially supplied in the form of a droplet flow, but the absorption liquid transitions to a columnar flow form from the 4th to 5th stage heat exchange tube spaced downward from the liquid distribution device, resulting in a rapid decrease in absorption efficiency.

[0009] In addition, conventional liquid distribution devices have a problem in that they require a separate support to install the liquid distribution device between multiple heat exchange tube groups.

[0010] In addition, conventional liquid distribution devices have the problem of being difficult to apply to already installed absorbers.

[0011] Republic of Korea Patent No. 10-09266418 (Published on November 13, 2009)

[0012] An object of the present disclosure may be to provide an absorption chiller with improved heating and cooling performance.

[0013] Another object of the present disclosure may be to provide an absorption chiller having improved absorption performance of the absorber.

[0014] Another object of the present disclosure may be to provide an absorption chiller having improved absorption efficiency of an absorbent that absorbs a refrigerant.

[0015] Another object of the present disclosure may be to provide an absorption chiller in which non-uniform distribution of absorbent occurring in a heat transfer tube disposed in the absorber is reduced.

[0016] Another object of the present disclosure may be to provide an absorption chiller in which an absorbent flows uniformly along the outer surface of a heat pipe.

[0017] Another object of the present disclosure may be to provide an absorption chiller in which an absorbent flows between heat transfer tubes in the form of droplets.

[0018] Another object of the present disclosure may be to provide an intermediate distributor structure applicable to an already installed absorber.

[0019] Another object of the present disclosure may be to provide a combined structure of a flow device and an intermediate distributor disposed in an absorber.

[0020] Another object of the present disclosure may be to provide an intermediate distributor having a compact structure.

[0021] Another object of the present disclosure may be to provide an intermediate distributor structure with reduced leakage of absorbent.

[0022] Another object of the present disclosure may be to provide an absorption chiller with increased convenience of installation and management.

[0023] Another object of the present disclosure may be to provide an absorption chiller with reduced manufacturing cost.

[0024] Another object of the present disclosure may be to provide an absorption chiller with improved maintainability.

[0025] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0026] According to one aspect of the present disclosure for achieving the above-described object, an absorption chiller includes: an evaporator for evaporating a refrigerant; an absorber for mixing the refrigerant evaporated in the evaporator with an absorbent to produce an absorption liquid; a regenerator for heating the absorption liquid supplied from the absorber; and a condenser for supplying the refrigerant produced in the regenerator, wherein the absorber includes: a plurality of heat transfer tubes arranged in a vertical direction to form a plurality of stages; and a plurality of intermediate distributors arranged between the plurality of heat transfer tubes, wherein the plurality of intermediate distributors divide the plurality of heat transfer tubes into a plurality of tube groups formed in a predetermined stage, so that the intermediate distributor can collect an absorbent flowing unevenly from the heat transfer tubes located on the upper side and uniformly redistribute the absorbent to the heat transfer tubes located on the lower side.

[0027] The above plurality of tube groups may include a plurality of heat pipes formed in 10 or fewer stages, and the intermediate distributor may be placed in a section where an uneven columnar flow of absorbent occurs.

[0028] The above plurality of tube groups may include a plurality of tubes formed in 4 to 10 stages, and an intermediate distributor may be placed in a section after the 4th stage where the absorbent flow form is changed from a uniform droplet form to an uneven column form.

[0029] The above absorber includes a support plate having a through hole formed therein to which the plurality of heat pipes are coupled, and the plurality of intermediate distributors are coupled to the through hole of the support plate, so that the intermediate distributors can be coupled to the support plate on which the heat pipes are mounted.

[0030] The above-described plurality of intermediate distributors include: a body having an elongated shape, including a collecting space opened upward to collect a flowing absorbent; and a supporter forming an end of the body and coupled to the support plate, the cross-sectional shape of the supporter corresponding to the cross-sectional shape of the heat pipe, so that the intermediate distributor can be coupled to the support plate on which the heat pipe is mounted via the supporter.

[0031] A plurality of distribution holes are formed on the bottom surface of the above body to distribute the collected absorbent, so that the intermediate distributor can redistribute the absorbent collected from the upstream.

[0032] The absorber includes: an expander that secures the plurality of intermediate distributors to the support plate, and the supporter includes: a supporter hole into which the expander is inserted, so that the intermediate distributors can be expanded to the support plate through the expander.

[0033] The above support plate may include an expansion groove formed on the inner surface of the through hole and through which the supporter is expanded.

[0034] The above plurality of intermediate distributors include a partition wall separating the collection space and the support hole, so that the absorbent collected in the collection space may not leak.

[0035] The cross-sectional shape of the above body end portion can be formed into a semicircular shape with an upper side open to correspond to the cross-sectional shape of the supporter.

[0036] The cross-sectional shape of the above body may become closer to a 'V' shape as it gets further away from the end.

[0037] The above absorber may include: a support plate having a through hole formed to couple the plurality of heat pipes, and the support plate may include a coupling hole to couple the plurality of intermediate distributors.

[0038] The above plurality of intermediate distributors include: a body elongated in a 'V' cross-sectional shape with an open upper side, and the absorber includes: a cover plate coupled to the support plate and covering a longitudinal end of the body, so that the intermediate distributor is fixed to the support plate, and the cover plate can close both open ends of the intermediate distributor.

[0039] The above absorber comprises: a gasket disposed between the cover plate and the support plate, and surrounding a longitudinal end of the body, wherein the gasket can seal both open ends of the intermediate distributor.

[0040] The plurality of intermediate distributors may include: a plurality of bodies arranged in a horizontal direction; and a connecting plate connecting the plurality of bodies to each other, so that the plurality of intermediate distributors can form a module.

[0041] Specific details of other embodiments are included in the detailed description and drawings.

[0042] According to at least one embodiment of the present disclosure, a plurality of intermediate distributors that divide a plurality of heat transfer tubes into a plurality of tube groups formed in a predetermined sequence collect the unevenly flowing absorbent and distribute it to flow uniformly, thereby improving the refrigerant absorption efficiency of the flowing absorbent. As a result, the cooling and heating performance of the absorption chiller can be improved.

[0043] According to at least one of the embodiments of the present disclosure, the plurality of tube groups include a plurality of heat transfer tubes formed of 10 or fewer stages, and an intermediate distributor is disposed between the plurality of tube groups, such that the intermediate distributor is disposed at every 10 or fewer stages where a non-uniform columnar flow occurs, so that non-uniform flow of an absorbent flowing through the plurality of heat transfer tubes can be reduced.

[0044] According to at least one of the embodiments of the present disclosure, a plurality of tube groups include a plurality of heat pipes formed in 4 to 10 stages, and an intermediate distributor is disposed between the plurality of tube groups, such that the intermediate distributor is disposed in a section after the 4th stage where the absorbent flow form transitions from a uniform droplet form to a non-uniform column form, thereby maximizing the absorbent distribution efficiency of the intermediate distributor. In addition, an absorption chiller in which the absorbent flows in the form of droplets can be provided.

[0045] According to at least one embodiment of the present disclosure, the intermediate distributor is coupled to a through-hole of a support plate to which heat pipes are coupled, thereby eliminating the need for a separate support device to position the intermediate distributor between multiple heat pipes. Furthermore, the intermediate distributor can be applied to an already installed absorption chiller. Furthermore, since only a single through-hole is required to couple the intermediate distributor and the heat pipe, manufacturing costs can be reduced.

[0046] According to at least one of the embodiments of the present disclosure, the cross-sectional shape of the supporter forming the end of the intermediate distributor corresponds to the cross-sectional shape of the heat pipe, allowing the operator to subsequently change the arrangement of the intermediate distributor and the heat pipe. This allows for the provision of an absorption chiller with enhanced installation and maintenance convenience.

[0047] According to at least one embodiment of the present disclosure, the intermediate distributor includes a partition wall separating the collection space and the support hole, thereby minimizing leakage of the collected absorbent into the collection space. This allows for the provision of an absorption chiller with improved absorption efficiency.

[0048] According to at least one of the embodiments of the present disclosure, the intermediate distributor is elongated in a 'V' cross-sectional shape with an open upper side and is fixed to the support plate, so that a separate expansion device for preventing rotation and detachment of the intermediate distributor coupled to the support plate may not be required.

[0049] According to at least one embodiment of the present disclosure, a gasket disposed between a cover plate and a support plate can be included to minimize leakage of the absorbent through the open ends of the intermediate distributor. This can provide an absorption chiller with improved absorption efficiency of the absorbent.

[0050] According to at least one of the embodiments of the present disclosure, a plurality of intermediate distributors are provided as intermediate distributor modules connected through a connecting plate, so that a plurality of intermediate distributors can be connected to a support plate at once in the form of intermediate distributor modules, thereby improving the work efficiency and management convenience of a worker.

[0051] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0052] FIG. 1 is a conceptual diagram of an absorption chiller according to one embodiment of the present disclosure.

[0053] FIG. 2 is a schematic diagram of a flow device according to one embodiment of the present disclosure.

[0054] Figure 3 is a cross-sectional view of a conventional flow device.

[0055] FIG. 4 is a cross-sectional view of a flow device to which an intermediate distributor is applied according to one embodiment of the present disclosure.

[0056] FIG. 5 is a perspective view of an intermediate distributor according to one embodiment of the present disclosure.

[0057] Figure 6 is a cross-sectional view taken along line 91-92 of Figure 5.

[0058] FIG. 7 is a drawing of an intermediate distributor according to one embodiment of the present disclosure.

[0059] Figure 8 is a cross-sectional view taken along line 93-94 of Figure 5.

[0060] FIG. 9 is a perspective view of an intermediate distributor according to another embodiment of the present disclosure.

[0061] Figure 10 is a cross-sectional view taken along line 95-96 of Figure 9.

[0062] FIG. 11 is a cross-sectional view of a combined intermediate distributor and support plate according to one embodiment of the present disclosure.

[0063] FIG. 12 is a perspective view of an intermediate distributor according to another embodiment of the present disclosure.

[0064] FIG. 13 is a cross-sectional view of a flow device to which an intermediate distributor is applied according to another embodiment of the present disclosure.

[0065] FIG. 14 is a cross-sectional view of a combined intermediate distributor and support plate according to another embodiment of the present disclosure.

[0066] FIG. 15 is a perspective view of an intermediate distributor module according to another embodiment of the present disclosure.

[0067] FIG. 16 is a cross-sectional view of a flow device to which an intermediate distributor module is applied according to another embodiment of the present disclosure.

[0068]

[0069] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components are assigned the same reference numerals, and redundant descriptions thereof will be omitted.

[0070] The suffixes “module” and “part” used for components in the following description are given or used interchangeably only for the convenience of writing specifications, and do not have distinct meanings or roles in themselves.

[0071] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0072] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0073] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0074] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0075] The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are only for convenience of explanation, and the technical ideas disclosed in this specification are not limited thereby.

[0076]

[0077] Referring to Fig. 1, the structure and principle of an absorption chiller (1) are described.

[0078] An absorption chiller (1) may include a regenerator (11), a condenser (12), an absorber (14), and an evaporator (13). The refrigerant may exchange heat while sequentially circulating through the regenerator (11), the condenser (12), the absorber (14), and the evaporator (13).

[0079] An absorption chiller (1) may include a regenerator (11). The regenerator (11) may heat an absorbent liquid. The absorbent liquid may be a solution containing an absorbent and a refrigerant. The absorbent liquid may be referred to as a dilute solution or a weak solution. For example, the absorbent liquid may be an aqueous lithium bromide solution.

[0080] The absorbent can absorb the refrigerant. The absorbent that has absorbed the refrigerant can become an absorption liquid. When the regenerator (11) heats the absorption liquid, the absorbent and the refrigerant can be separated from each other. For example, the heated refrigerant can be separated from the liquid absorption liquid while changing into a vapor state. The liquid in which the refrigerant is separated from the absorption liquid can be referred to as a concentrated solution or a thick solution. For example, the absorbent can be lithium bromide, and the refrigerant can be water.

[0081] An absorption chiller (1) may include a first pipe (110) connecting a regenerator (11) and a condenser (12). Refrigerant vapor separated from the absorption liquid may move to the condenser (12) along the first pipe (110). For example, water vapor, which is refrigerant vapor, may move to the condenser (12) through the first pipe (110).

[0082] The absorption chiller (1) may include a fifth pipe (150) connecting the regenerator (11) and the absorber (14). The concentrated solution from which the refrigerant vapor has been separated may be moved to the absorber (14) through the fifth pipe (150). The concentrated solution moved to the absorber (14) may absorb the refrigerant vapor in the absorber (14).

[0083] The condenser (12) can condense the refrigerant. The regenerator (11) can supply the refrigerant to the condenser (12). For example, water vapor generated in the regenerator (11) can be supplied to the condenser (12).

[0084] An absorption chiller (1) may include a cooling tower (16) for cooling cooling water. A condenser (12) may be connected to the cooling tower (16). The cooling tower (16) and the condenser (12) may be connected via a sixth pipe (160). Cooling water may circulate between the cooling tower (16) and the condenser (12) via the sixth pipe (160). The cooling water may absorb heat energy as it passes through the condenser (12) and release heat energy as it passes through the cooling tower (16).

[0085] The refrigerant vapor supplied to the condenser (12) can be condensed by cooling water. The cooling water can absorb heat energy from the refrigerant vapor and condense the refrigerant vapor. The refrigerant vapor can undergo a phase change into a refrigerant liquid in the condenser (12). The refrigerant liquid generated in the condenser (12) can be supplied to the evaporator (13).

[0086] The absorption chiller (1) may include a second pipe (120) connecting the condenser (12) and the evaporator (13). The refrigerant liquid may be supplied to the evaporator (13) through the second pipe (120).

[0087] The evaporator (13) can be connected to a cooler (17). The cooler (17) can cool an indoor space or supply cold water to the indoor space. Furthermore, by changing the flow path, the cooler (17) can heat an indoor space or supply hot water to the indoor space. For convenience of explanation, the present disclosure will focus on the air conditioning cooler (17).

[0088] The absorption chiller (1) may include a seventh pipe (170) arranged in the evaporator (13). The seventh pipe (170) may connect the evaporator (13) and the cooler (17). Water supplied to the room may flow inside the seventh pipe (170). The temperature of the water flowing inside the seventh pipe (170) may be lowered as it passes through the evaporator (13). The water may also circulate between the evaporator (13) and the cooler (17) through the seventh pipe (170).

[0089] The refrigerant liquid supplied to the evaporator (13) can be evaporated. The refrigerant liquid can exchange heat with the water inside the heat transfer tube (20). The refrigerant liquid can change its phase into refrigerant vapor by exchanging heat with the water inside the heat transfer tube (20). For example, the refrigerant liquid absorbs heat energy from the water inside the heat transfer tube (20) and evaporates, and the temperature of the water inside the heat transfer tube (20) can be lowered by losing heat energy to the refrigerant.

[0090] The absorption chiller (1) may include a third pipe (130) connecting the evaporator (13) and the absorber (14). Refrigerant vapor evaporated in the evaporator (13) may be supplied to the absorber (14) through the third pipe (130).

[0091] The refrigerant evaporated in the evaporator (13) can move to the absorber (14). The concentrated solution generated in the regenerator (11) can be supplied to the absorber (14) through the fifth pipe (150).

[0092] An absorption chiller (1) may include a heat transfer tube (20) disposed in an absorber (14). The heat transfer tube (20) may be connected to a cooling tower (16). Cooling water supplied from the cooling tower (16) may flow through the heat transfer tube (20). The cooling water may circulate between the cooling tower (16) and the absorber (14) through the heat transfer tube (20).

[0093] The concentrated solution supplied through the fifth pipe (150) can flow down the heat transfer tube (20). The concentrated solution can flow downward along the outer surface of the heat transfer tube (20). The refrigerant vapor generated in the evaporator (13) is supplied to the absorber (14) through the third pipe (130), and the concentrated solution can absorb the refrigerant vapor. The refrigerant vapor and the concentrated solution can meet in the absorber (14) to become a diluted solution.

[0094] The absorption chiller (1) may include a fourth pipe (140) connecting the absorber (14) and the regenerator (11). The absorption liquid produced in the absorber (14) may be transferred back to the regenerator (11) through the fourth pipe (140). The absorption liquid supplied to the regenerator (11) may be reheated and separated into a concentrated solution and refrigerant vapor.

[0095]

[0096] Referring to Fig. 2, a flow device (140) placed in an absorber is described.

[0097] The flow device (140) may include a plurality of heat pipes (20) arranged in a vertical direction. The plurality of heat pipes (20) may be arranged in a horizontal direction. The plurality of heat pipes (20) may be arranged in a vertical direction. The plurality of heat pipes (20) arranged in a horizontal direction may be arranged in a vertical direction.

[0098] The flow device (140) may include a support plate (50) on which heat pipes (20) are arranged. The support plate (50) may support the flow device (140). The support plate (50) may have heat pipes (20) coupled to it. The heat pipes (20) may be coupled to and supported by the support plate (50). The support plate (50) may extend in a vertical direction. A plurality of heat pipes (20) may be arranged horizontally on the support plate (50). A plurality of heat pipes (20) may be arranged vertically on the support plate (50). An absorbent distributed from the upper side of the flow device (140) may flow from the heat pipes (20) located at the upper side toward the heat pipes (20) located at the lower side. The absorbent may flow along the outer surface of the heat pipes (20). For example, the absorbent distributed to the upper part of the upper heat pipe (20) can flow along the outer surface of the heat pipe (20) and descend to the lower heat pipe (20).

[0099] A plurality of heat pipes (20) arranged in a horizontal direction can form one stage. The plurality of heat pipes (20) can be arranged vertically in multiple stages. In one stage, a plurality of heat pipes (20) can be arranged horizontally. A plurality of heat pipes (20) arranged horizontally constitute one stage, and the multiple stages can be arranged vertically. A stage can refer to a plurality of heat pipes (20) arranged in a horizontal direction. That is, a plurality of heat pipes (20) arranged in the same stage can be arranged at the same height.

[0100] The flow device (140) may include an intermediate distributor (40) disposed between a plurality of heat pipes (20). The intermediate distributor (40) may be disposed between a plurality of stages. The intermediate distributor (40) may include a plurality of intermediate distributors (40) disposed at each of a plurality of stages. A plurality of heat pipes (20) each having a plurality of stages may be disposed between two intermediate distributors (40). The intermediate distributor (40) may be disposed between a plurality of heat pipes (20) arranged in a vertical direction, and may collect the absorbent flowing from the heat pipes (20) located at the upper side and redistribute it to the heat pipes (20) located at the lower side.

[0101] A plurality of stages arranged between two intermediate distributors (40) can form a tube group (200). That is, a tube group (200) can refer to a plurality of stages arranged between two intermediate distributors (40). Each tube group (200) can be formed of a plurality of stages. Each tube group (200) can include a plurality of heat pipes (20) arranged vertically in a plurality of stages. A plurality of intermediate distributors (40) can be arranged between a plurality of tube groups (200).

[0102] The plurality of intermediate distributors (40) may include a first intermediate distributor (40a) located at the uppermost side among the plurality of intermediate distributors (40). The plurality of tube groups (200) may include a first tube group (200a) located at the uppermost side among the plurality of tube groups (200). The first tube group (200a) located at the uppermost side among the plurality of tube groups (200) may be located above the first intermediate distributor (40a) located at the uppermost side among the plurality of intermediate distributors (40). The first tube group (200a) may include a plurality of heat transfer tubes (20) arranged in four stages. The number of the plurality of heat transfer tubes (20) included in the first tube group (200a) may be determined as a multiple of four. The first intermediate distributor (40a) may divide the first tube group (200a) and the second tube group (200b).

[0103] The plurality of intermediate distributors (40) may include a first intermediate distributor (40a) positioned at the top, and a second intermediate distributor (40b) arranged spaced apart from the first intermediate distributor (40a) downward. The plurality of tube groups (200) may include a second tube group (200b) positioned between the first intermediate distributor (40a) and the second intermediate distributor (40b). The second tube group (200b) may include a plurality of heat transfer tubes (20) arranged in four stages. The number of the plurality of heat transfer tubes (20) included in the second tube group (200b) may be determined as a multiple of four. The second intermediate distributor (40b) may partition the second tube group (200b) and a third tube group (not shown).

[0104]

[0105] Referring to Fig. 3, a conventional flow device (900) is described.

[0106] A conventional flow device (140) in which an intermediate distributor is not arranged between a plurality of tube groups (200) is described. In the absorber, an absorbent is distributed from the upper side of the heat pipe (920). The distributed absorbent can flow downward along the outer surface from the upper side of the first heat pipe (920a) located at the uppermost position. The absorbent forms a film (921) while flowing along the outer surface of the first heat pipe (920a), and the absorbent film (921) formed on the outer surface of the first heat pipe (920a) can absorb refrigerant vapor within the absorber.

[0107] The absorbent flowing down the lower end of the first heat pipe (920a) may fall into the second heat pipe (920b) located below the first heat pipe (920a). At this time, the absorbent falling from the first heat pipe (920a) to the second heat pipe (920b) may flow in the form of droplets (922). The droplet-shaped flow may mean that the absorbent moves while forming pendant droplets. The absorbent flowing between the heat pipes (920) in the form of droplets (922) may absorb the refrigerant vapor within the absorber.

[0108] The absorbent that has descended from the first heat pipe (920a) can fall to the upper end of the second heat pipe (920b). The absorbent that has fallen to the upper end of the second heat pipe (920b) can move downward along the outer surface of the second heat pipe (920b). The absorbent forms a film (921) while flowing along the outer surface of the second heat pipe (920b), and the absorbent film (921) formed on the outer surface of the second heat pipe (920b) can absorb the refrigerant vapor within the absorber.

[0109] The absorbent flowing down the lower end of the second heat pipe (920b) can fall into the third heat pipe (920c) located on the lower side of the second heat pipe (920b). At this time, the absorbent falling from the second heat pipe (920b) to the third heat pipe (920c) can flow in the form of droplets (922). The absorbent flowing from the second heat pipe (920b) to the third heat pipe (920c) in the form of droplets (922) can absorb the refrigerant vapor within the absorber.

[0110] The absorbent that has fallen onto the third heat pipe (920c) can flow along the outer surface of the third heat pipe (920c) and form a film (921). The absorbent that has flowed along the outer surface of the third heat pipe (920c) can form droplets (922) at the bottom of the third heat pipe (920c) and then flow down to the fourth heat pipe (920d).

[0111] Hereinafter, the form in which the absorbent flows after the fourth heat pipe (920d) will be described. The description will focus on the fourth heat pipe (920d), but the following description may also apply to the heat pipes (20) after the fourth heat pipe (20). The absorbent supplied to the fourth heat pipe (920d) may flow along the outer surface of the fourth heat pipe (920d) and form a film (921). The absorbent formed at the lower end of the fourth heat pipe (920d) may flow to the fifth heat pipe (920e) while forming a liquid column (923). That is, in the heat pipes (920) after the fourth heat pipe (920d), the absorbent flowing between the heat pipes (920) has the appearance of flowing in the form of a column (923). An absorbent flowing in a columnar shape (923) between heat pipes (920) can also absorb refrigerant vapor within the absorber. However, the absorbent flowing in a columnar shape (923) may have a smaller absorption amount than the absorbent flowing in a droplet shape (922). Accordingly, the absorbent flowing in a plurality of heat pipes (920) arranged in a vertical direction may continuously reduce the amount of refrigerant vapor absorbed in heat pipes (920) after the fourth stage.

[0112]

[0113] Referring to FIG. 4, a flow device (140) in which an intermediate distributor (40) of the present disclosure is arranged will be described.

[0114] According to the present disclosure, an intermediate distributor (40) can be placed between a plurality of tube groups (200). An intermediate distributor (40) placed between a plurality of tube groups (200) can collect absorbent flowing from a tube group (200) located at the upper side and redistribute it to a tube group (200) located at the lower side.

[0115] A plurality of intermediate distributors (40) arranged between two pipe groups (200) can form one intermediate distributor group (400). That is, the intermediate distributor group (400) can refer to a plurality of intermediate distributors (40) arranged between two pipe groups (200). Each intermediate distributor group (400) can be formed as a single stage. Each intermediate distributor group (400) can include a plurality of intermediate distributors (40) arranged horizontally as a single stage. For example, the intermediate distributor group (400) can include a first intermediate distributor group (400a) positioned between a first pipe group (200a) and a second pipe group (200b). The first intermediate distributor group (400a) can include seven intermediate distributors (40) arranged to be spaced apart in the horizontal direction. The intermediate distributor group (400) may include a second intermediate distributor group (400b) located between the second pipe group (200b) and the third pipe group (not shown).

[0116] The intermediate distributor group (400) and the tube group (200) may be arranged alternately. The plurality of intermediate distributor groups (400) and the plurality of tube groups (200) may be arranged alternately in the vertical direction. For example, a first intermediate distributor group (400a) may be arranged below a first tube group (200a), a second tube group (200b) may be arranged below the first intermediate distributor group (400a), a second intermediate distributor group (400b) may be arranged below the second tube group (200b), and a third tube group (200) may be arranged below the second intermediate distributor (40b). By arranging the intermediate distributor group (400) between the plurality of tube groups (200), the absorption efficiency of the absorber may be improved.

[0117] A single tube group (200) arranged between intermediate distributors (40) may include multiple stages. The multiple stages may be formed in groups of 10 or fewer. For example, an intermediate distributor (40) may be arranged one at a time for every 10 stages. Through this, the intermediate distributor (40) can collect and redistribute the absorbent for every 10 stages.

[0118] Accordingly, since the intermediate distributor (40) redistributes the absorbent every 10 stages, the absorbent can restart the droplet-shaped flow every 10 stages.

[0119] Additionally, the absorption efficiency of the absorber can be improved.

[0120] The multiple stages can be formed into 4 to 10 stages. For example, one intermediate distributor (40) can be arranged every four stages. This allows the intermediate distributor (40) to collect and redistribute the absorbent in every four stages.

[0121] Accordingly, since the intermediate distributor (40) redistributes the absorbent before the flow of the absorbent changes from droplet-shaped flow to column-shaped flow after the fourth stage, the proportion of column-shaped flow in the downstream device (140) can be reduced.

[0122] Additionally, the absorption efficiency of the absorber can be improved.

[0123] The intermediate distributor (40) can be coupled to the support plate (50). The intermediate distributor (40) can be inserted into the support plate (50). The intermediate distributor (40) can penetrate the support plate (50). The intermediate distributor (40) can have both ends fixed to the support plate (50).

[0124] The support plate (50) may include a through hole (not shown) through which a plurality of heat pipes (20) are coupled. The intermediate distributor (40) may be coupled to the through hole of the support plate (50). Both ends of the intermediate distributor (40) may be fixed to a pair of support plates (50) spaced apart from each other. The shape of both ends of the intermediate distributor (40) may correspond to the shape of both ends of the heat pipe (20). For example, the cross-sections of both ends of the intermediate distributor (40) and the cross-sections of both ends of the heat pipe (20) may be formed in a circular shape.

[0125] Accordingly, since the intermediate distributor (40) is connected to a through hole into which the heat pipe (20) can be connected, a separate support device may not be required.

[0126] Additionally, the intermediate distributor (40) can also be applied to an already installed flow device (140).

[0127] Additionally, the worker can change the arrangement of the intermediate distributor (40) afterwards.

[0128]

[0129] Referring to FIGS. 5 and 6, the structure of the intermediate distributor (40) will be described.

[0130] The intermediate distributor (40) may include an elongated body (42). The body (42) may be open at the top. The body (42) may include an opening formed at the top. The body (42) may include a collection space (420) that is open at the top. The flowing absorbent may be collected in the collection space (420) through the upper opening formed at the body (42).

[0131] The body (42) can be extended in a long manner. The body (42) can be extended in a long manner in the longitudinal direction of the heat pipe (20). The body (42) can be extended in a long manner in a direction in which a pair of support plates (50) are spaced apart. The body (42) can be extended in a long manner in a direction intersecting the direction in which the support plates (50) are extended.

[0132] The intermediate distributor (40) may include a distribution port (422) formed in the body (42). The distribution port (422) may be formed at the bottom of the body (42). The absorbent collected in the collection space (420) may be distributed to the heat pipe (20) located at the bottom through the distribution port (422).

[0133] The distribution port (422) may include a plurality of distribution ports (422) arranged in the longitudinal direction of the body (42). The plurality of distribution ports (422) may be arranged spaced apart from each other in the longitudinal direction of the body (42). Through this, the absorbent collected in the collection space (420) may be evenly distributed in the longitudinal direction of the heat pipe (20).

[0134] The body (42) may have a bottom surface that protrudes downward. The body (42) may protrude downward toward the center. For example, the body (42) may have a cross-section formed in a 'V' shape. For example, the body (42) may have a cross-section formed in a 'U' shape. Through this, the absorbent collected in the collection space (420) may be gathered toward the center of the body (42) where the distribution port (422) is formed.

[0135] The cross-sectional shape of the end of the body (42) may correspond to the cross-sectional shape of the supporter (44). The cross-sectional shape of the end of the body (42) may be formed in a semicircular shape with an open upper side. For example, the cross-sectional shape of the end of the body (42) may be formed in a 'U' shape.

[0136] The cross-sectional shape of the body (42) may become closer to a 'V' shape as it gets farther away from the end. The central portion of the body (42) may have a cross-sectional shape of a folded shape. For example, the cross-sectional shape of the central portion of the body (42) may be formed in a 'V' shape.

[0137] The intermediate distributor (40) may include a supporter (44) forming an end portion. The intermediate distributor (40) may be coupled to a support plate (50) via the supporter (44). The supporter (44) may be inserted into the support plate (50). The supporter (44) may be positioned in a through hole formed in the support plate (50). For example, a pair of supporters (44a, 44b) positioned at opposite ends in the longitudinal direction of the intermediate distributor (40) may be fixed to the through hole formed in the support plate (50).

[0138] The cross-sectional shape of the supporter (44) may correspond to the cross-sectional shape of the heat pipe (20). For example, both the cross-section of the supporter (44) and the cross-section of the heat pipe (20) may be formed in a circular shape. The diameter of the cross-section of the supporter (44) formed in a circular shape may correspond to the diameter of the cross-section of the heat pipe (20) formed in a circular shape.

[0139]

[0140] Referring to FIGS. 7 and 8, the intermediate distributor (40) will be described.

[0141] The supporter (44) may include a supporter hole (440) that is opened in the longitudinal direction of the body (42). The supporter hole (440) may be a space formed inside the supporter (44). The supporter hole (440) may be an opening formed at both ends in the longitudinal direction of the intermediate distributor (40). The supporter hole (440) may be formed in each of a pair of supporters (44a, 44b) located at both ends in the longitudinal direction of the body (42).

[0142] The intermediate distributor (40) may include a partition wall (442) that separates the collection space (420) and the support hole (440). The partition wall (442) may prevent the absorbent collected in the collection space (420) from flowing into the support hole (440). The partition wall (442) may partition the support hole (440) and the collection space (420).

[0143] Accordingly, the amount of absorbent collected in the collection space (420) leaking from the intermediate distributor (40) can be minimized.

[0144] In addition, a lightweight intermediate distributor (40) can be provided.

[0145]

[0146] Referring to FIGS. 9 and 10, the structure of the intermediate distributor (40) will be described.

[0147] The body (42) has a 'U'-shaped cross-section with an open upper side and can be extended in a long manner. The body (42) can be extended in a 'U'-shaped cross-section from one end to the other in the longitudinal direction.

[0148] A plurality of distribution ports (422) can be arranged spaced apart from each other on the bottom surface along the length direction of the body (42).

[0149] The cross-section of the body (42) may be circular with an open upper side. The cross-section shape of the end of the body (42) may correspond to the cross-section shape of the supporter (44). For example, the cross-section shape of the supporter (44) may be circular, and the cross-section shape of the end of the body (42) may be a shape with an open upper side in the circular cross-section shape of the supporter (44). The supporter (44) may be covered at the upper side.

[0150]

[0151] Referring to Fig. 11, the coupling structure of the intermediate distributor (40) is described.

[0152] The flow device (140) may include an expander (54) that secures the intermediate distributor (40) to the support plate (50). The expander (54) may be inserted into a supporter hole (440) formed in the supporter (44). The expander (54) inserted into the supporter hole (440) may press the supporter (44) against the support plate (50). For example, the expander (54) may be inserted into the supporter hole (440) to press the peripheral wall forming the supporter hole (440) against the through hole formed in the support plate (50).

[0153] The support plate may include an expansion groove (52) formed on the inner surface of the through hole. The expansion groove (52) may be a groove (53) formed on the inner surface of the through hole. The expansion groove (52) may be formed on at least one of the upper and lower surfaces forming the through hole. For example, the expansion groove (52) may be formed on each of the upper and lower surfaces forming the through hole. The peripheral wall contacted by the expansion member (54) may protrude into the expansion groove (52). Through this, the intermediate distributor (40) may be fixed to the support plate (50).

[0154]

[0155] Referring to Fig. 12, the structure of the intermediate distributor (40) is described.

[0156] The cross-section of the body (42) may be formed in a 'V' shape with an open upper side. The body (42) has a 'V' shaped cross-section and may be elongated. The collection space (420) may be a fine groove on the upper surface of the body (42). The body (42) may be open in the longitudinal direction. That is, the body (42) may be open at both the upper side and the longitudinal end.

[0157]

[0158] Referring to Fig. 13, the arrangement of the intermediate distributor (40) is described.

[0159] The intermediate distributor (40) can be placed between multiple groups of pipes (200). The description regarding the placement of the intermediate distributor (40) can be the same as that in Fig. 4.

[0160] The intermediate distributor (40) can be coupled to the support plate (50). The support plate (50) can include a coupling groove (not shown) to which the intermediate distributor (40) is coupled. The support plate (50) can include a coupling groove to which the intermediate distributor (40) is coupled and a through hole to which the heat pipe (20) is coupled. The coupling groove can be formed in the cross-sectional shape of the intermediate distributor (40). The shape of the coupling groove can be different from the shape of the through hole. For example, the coupling groove can be formed in a 'V' shape, and the through hole can be formed in a circular shape.

[0161]

[0162] Referring to Fig. 14, the coupling structure of the intermediate distributor (40) is described.

[0163] The flow device (140) may include a cover plate (56) coupled to a support plate (50). The cover plate (56) may be coupled to the outside of the support plate (50). The cover plate (56) may cover an end of the body (42). The cover plate (56) may close an end of the open body (42). The cover plate (56) may contact an end of the body (42).

[0164] The flow device (140) may include a gasket (54) disposed between the cover plate (56) and the support plate (50). The gasket (54) may surround an end of the body (42) that contacts the cover plate (56). For example, the gasket (54) may be a circular gasket (54) that surrounds an end of the body (42).

[0165] The cross section of the gasket (54) can be formed into a circular shape.

[0166] The support plate (50) may include a groove (53) in which a gasket (54) is placed. The gasket (54) may be placed in the groove (53). The gasket (54) placed in the groove (53) may be in contact with the support plate (50) and the cover plate (56).

[0167]

[0168] Referring to Fig. 15, the intermediate distributor (40) module (410) is described.

[0169] An absorption chiller may include an intermediate distributor (40) module (410) having a plurality of bodies (42) connected thereto. The intermediate distributor (40) module (410) may include a plurality of integrated bodies (42). The plurality of bodies (42) may be arranged to correspond to the arrangement of the plurality of heat pipes (20) arranged in a horizontal direction. That is, the plurality of bodies (42) may be arranged below the plurality of heat pipes (20) arranged in a horizontal direction.

[0170] The intermediate distributor (40) module (410) may include a connecting plate (46) connecting a plurality of bodies (42). The connecting plate (46) may be arranged between the plurality of bodies (42). The connecting plate (46) may include a plurality of connecting plates (46) arranged alternately with the plurality of bodies (42). The plurality of bodies (42) may be integrally connected to a support plate (50) or detachable from the support plate (50).

[0171]

[0172] Referring to Fig. 16, the arrangement of the intermediate distributor (40) module (410) is described.

[0173] The support plate (50) may include a coupling hole into which the intermediate distributor (40) module (410) is coupled. The coupling hole may be formed in the cross-sectional shape of the intermediate distributor (40) module (410). The intermediate distributor (40) module (410) may be inserted and coupled into the coupling hole of the support plate (50).

[0174] The shape of the through hole and the shape of the coupling hole may be different. For example, the through hole may be formed in a circular cross-sectional shape of the heat pipe (20), and the coupling hole may be formed in a cross-sectional shape of the intermediate distributor (40) module (410). The through hole may include a plurality of through holes corresponding to the tube group (200). The plurality of through holes may be arranged in a horizontal direction and a vertical direction.

[0175] The intermediate distributor (40) module (410) can be placed between multiple tube groups (200). The intermediate distributor (40) module (410) placed between multiple tube groups (200) can collect absorbent flowing from the tube group (200) located on the upper side and redistribute it to the tube group (200) located on the lower side.

[0176] The intermediate distributor (40) module (410) and the tube group (200) may be arranged alternately. A plurality of intermediate distributor (40) modules (410) and a plurality of tube groups (200) may be arranged alternately in the vertical direction. For example, a first intermediate distributor (40a) module (410) may be arranged below a first tube group (200a), a second tube group (200b) may be arranged below the first intermediate distributor (40a) module (410), a second intermediate distributor (40b) module (410) may be arranged below the second tube group (200b), and a third tube group (200) may be arranged below the second intermediate distributor (40b). By arranging the intermediate distributor (40) module (410) between the plurality of tube groups (200), the absorption efficiency of the absorber may be improved.

[0177] A single tube group (200) arranged between intermediate distributor (40) modules (410) may include multiple stages. The number of stages, arrangement, and relationship with the intermediate distributor (40) of the multiple stages may be the same as the description in Fig. 4.

[0178]

[0179] Referring to FIGS. 1 to 16, an absorption chiller according to one aspect of the present disclosure includes: an evaporator that evaporates a refrigerant; an absorber in which the refrigerant evaporated in the evaporator is mixed with an absorbent to produce an absorption liquid; a regenerator that heats the absorption liquid supplied from the absorber; and a condenser to which the refrigerant produced in the regenerator is supplied, wherein the absorber includes: a plurality of heat transfer tubes arranged in a vertical direction to form a plurality of stages; and a plurality of intermediate distributors arranged between the plurality of heat transfer tubes, wherein the plurality of intermediate distributors can divide the plurality of heat transfer tubes into a plurality of tube groups formed in a certain stage.

[0180] According to another aspect of the present disclosure, the plurality of tube groups may include a plurality of heat transfer tubes formed of 10 or fewer units.

[0181] According to another aspect of the present disclosure, the plurality of tube groups may include a plurality of tube heat pipes formed in 4 to 10 stages.

[0182] According to another aspect of the present disclosure, the absorber may include: a support plate having a through hole formed therein to which the plurality of heat pipes are coupled.

[0183] According to another aspect of the present disclosure, the plurality of intermediate distributors can be coupled to the through holes of the support plate.

[0184] According to another aspect of the present disclosure, the plurality of intermediate distributors may include: an elongated body including a collecting space opened upward to collect a flowing absorbent; and a supporter forming an end of the body and coupled to the support plate.

[0185] According to another aspect of the present disclosure, the cross-sectional shape of the supporter may correspond to the cross-sectional shape of the heat pipe.

[0186] According to another aspect of the present disclosure, a plurality of distribution holes may be formed on the bottom surface of the body through which the collected absorbent is distributed.

[0187] According to another aspect of the present disclosure, the absorber may include: an expander that secures the plurality of intermediate distributors to the support plate.

[0188] According to another aspect of the present disclosure, the supporter may include: a supporter hole into which the expander is inserted.

[0189] According to another aspect of the present disclosure, the support plate may include: an expansion groove formed on the inner surface of the through hole and through which the supporter is expanded.

[0190] According to another aspect of the present disclosure, the plurality of intermediate distributors may include a partition wall separating the collection space and the supporter hole.

[0191] According to another aspect of the present disclosure, the cross-sectional shape of the body end portion may be formed into a semicircular shape with an upper side opened to correspond to the cross-sectional shape of the supporter.

[0192] According to another aspect of the present disclosure, the cross-sectional shape of the body may become closer to a 'V' shape as it gets farther away from the end.

[0193] According to another aspect of the present disclosure, the absorber may include: a support plate having a through hole formed therein to which the plurality of heat pipes are coupled; and the support plate may include a coupling hole to which the plurality of intermediate distributors are coupled.

[0194] According to another aspect of the present disclosure, the plurality of intermediate distributors may include: a body elongated in a 'V' cross-sectional shape with an open upper side; and the absorber may include: a cover plate coupled to the support plate and covering a longitudinal end of the body.

[0195] According to another aspect of the present disclosure, the absorber may include: a gasket disposed between the cover plate and the support plate, the gasket surrounding a longitudinal end of the body.

[0196] According to another aspect of the present disclosure, the plurality of intermediate distributors may include: a plurality of bodies arranged in a horizontal direction; and a connecting plate connecting the plurality of bodies to each other.

[0197]

[0198] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0199] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0200] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. An evaporator that evaporates the refrigerant; An absorber in which the refrigerant evaporated in the above evaporator is mixed with an absorbent to produce an absorption liquid; A regenerator for heating the absorbent liquid supplied from the absorber; and A condenser is included to which the refrigerant generated in the above generator is supplied, The above absorber: A plurality of heat pipes arranged in a vertical direction to form a plurality of stages; and Including a plurality of intermediate distributors arranged between the plurality of heating tubes, The above multiple intermediate distributors are, An absorption chiller in which the above-mentioned plurality of heat transfer tubes are divided into a plurality of tube groups arranged in a certain order.

2. In paragraph 1, The above multiple government forces, An absorption chiller comprising a plurality of heat transfer tubes arranged in groups of ten or fewer.

3. In paragraph 2, The above multiple government forces, An absorption chiller comprising a plurality of heat pipes arranged in groups of four to ten.

4. In paragraph 1, The above absorber: It includes a support plate having a through hole formed to connect the plurality of above-mentioned heating tubes, The above multiple intermediate distributors are, An absorption chiller coupled to the through hole of the above support plate.

5. In paragraph 4, The above multiple intermediate distributors are: A body having an elongated shape, comprising a collecting space opened upward to collect the flowing absorbent; and A supporter is formed to form a section of the above body and is coupled to the support plate, The cross-sectional shape of the above supporter is An absorption chiller corresponding to the cross-sectional shape of the above heat transfer tube.

6. In paragraph 5, On the bottom surface of the above body, An absorption chiller having a plurality of distribution ports through which the collected absorbent is distributed.

7. In paragraph 5, The above absorber: Including an expander that secures the plurality of intermediate distributors to the support plate, The above supporters are: An absorption chiller including a support hole into which the above-mentioned expander is inserted.

8. In paragraph 7, The above support plate: An absorption chiller including an expansion groove formed on the inner surface of the above through hole and through which the supporter is expanded.

9. In paragraph 7, The above multiple intermediate distributors are: An absorption chiller comprising a bulkhead separating the collection space and the supporter hole.

10. In paragraph 6, The cross-sectional shape of the above body section is: An absorption chiller formed in a semicircular shape with an open upper side to correspond to the cross-sectional shape of the above supporter.

11. In Article 10, The cross-sectional shape of the above body is, An absorption chiller that becomes closer to a 'V' shape the farther away from the end.

12. In paragraph 1, The above absorber: It includes a support plate having a through hole formed to connect the plurality of above-mentioned heating tubes, The above support plate: An absorption chiller comprising a coupling hole into which the plurality of intermediate distributors are coupled.

13. In paragraph 12, The above multiple intermediate distributors are: It includes a body that is elongated and has a 'V' cross-sectional shape with an open upper side, The above absorber: An absorption chiller comprising a cover plate coupled to the support plate and covering a longitudinal end of the body.

14. In paragraph 13, The above absorber: An absorption chiller comprising a gasket disposed between the cover plate and the support plate and surrounding a longitudinal end of the body.

15. In paragraph 13, The above multiple intermediate distributors are: a plurality of bodies arranged in a horizontal direction; and An absorption chiller comprising a connecting plate connecting the plurality of bodies to each other.

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