Composite condensation generation cooler

Abstract

The utility model discloses a composite condensation generating cooler in the technical field of absorption refrigeration and heat pumps, which comprises a tube-sheet heat exchanger, the tube-sheet heat exchanger comprises a shell and two tube box shell sections, a heat exchange tube communicated with the two tube box shell sections is arranged in the shell, preferably, a baffle is arranged in the tube-sheet heat exchanger, and the tube box shell sections are communicated with the heat exchange tube. An inner cavity of the tube-sheet heat exchanger is divided into a generation cavity, a condensation cavity, a circulating water cooling cavity and a rich liquid cooling cavity by the baffles, and the generation cavity, the condensation cavity, the circulating water cooling cavity and the rich liquid cooling cavity are isolated from one another and are respectively composed of a shell, a tube box shell ring and a heat exchange tube; the generation cavity, the condensation cavity, the circulating water cooling cavity and the rich liquid cooling cavity are integrated into one device, the cost of the device and pipelines can be reduced, the occupied area of a unit is greatly reduced, and skid-mounting of the unit is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of absorption refrigeration and heat pumps, in particular to a composite condensing cooler. Background Art

[0002] The heat-driven refrigeration unit uses low-grade waste heat to drive the thermal working medium and performs refrigeration through the phase change of the working medium (such as ammonia). The main equipment includes generator, condenser, evaporator, absorber, solution pump, etc. As shown in the figure, the low-grade waste heat is used to heat the generator, and the mixed solution (referred to as rich liquid) rich in refrigerant with a certain concentration delivered from the absorber by the solution pump is used to desorb most of the low-boiling point refrigerant in the rich solution, and becomes high-pressure gaseous refrigerant and enters the condenser. The high-pressure gaseous refrigerant is condensed into high-pressure liquid refrigerant by circulating water, and the high-pressure liquid refrigerant is decompressed into low-pressure liquid refrigerant through the expansion valve. The low-pressure liquid refrigerant enters the evaporator, absorbs the heat of the medium (coolant) to be cooled, and vaporizes into low-pressure gaseous refrigerant, and the low-pressure gaseous refrigerant enters the absorber. The high-pressure lean liquid remaining after the generation process in the generator is reduced to low-pressure lean liquid through the pressure reducing valve, enters the absorber, and is mixed and absorbed with the low-pressure gaseous refrigerant coming out of the evaporator, and restored to the original concentration to become room-temperature rich liquid. The room-temperature rich liquid is pressurized by the solution pump and sent to the generator to continue circulating. The circulating water is first used to cool the absorber solution and then to cool the condenser.

[0003] In the above refrigeration processes, most of the heat sources coming out of the generator are discharged or returned to the user's pipe network system. The heat source is generally only used once, resulting in low utilization of the heat source and energy waste. Utility Model Content

[0004] The purpose of the utility model is to provide a composite condensing cooler to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite generating condensing cooler, comprising: a tube-sheet heat exchanger, the tube-sheet heat exchanger comprising a shell and two tube-box barrel sections, a heat exchange tube communicating with the two tube-box barrel sections is arranged in the shell, preferably, a baffle is arranged in the tube-sheet heat exchanger, the baffle divides the inner cavity of the tube-sheet heat exchanger into a generating cavity, a condensing cavity, a circulating water cooling cavity and a rich liquid cooling cavity which are isolated from each other, the generating cavity, the condensing cavity, the circulating water cooling cavity and the rich liquid cooling cavity are all composed of a shell, a tube-box barrel section and a heat exchange tube;

[0006] The generating chamber is used to recover the heat discharged from the heat source of the refrigeration system generator, the condensing chamber is used to use the heat recovered by the generating chamber for refrigeration, the circulating water cooling chamber is used to use the cold energy generated by the condensing chamber to cool the circulating water before entering the refrigeration system absorber, and the rich liquid cooling chamber is used to use the cold energy generated by the condensing chamber to cool the low-pressure rich liquid before entering the refrigeration system solution pump.

[0007] Preferably, the shell of the generating chamber is provided with a high-pressure rich liquid inlet, a secondary rich liquid outlet, and a secondary high-pressure gaseous refrigerant outlet, and the two tube box cylinder sections of the generating chamber are respectively provided with a heat source inlet and a heat source outlet;

[0008] The shell of the condensing chamber is provided with a sub-high pressure gaseous refrigerant inlet and a sub-high pressure liquid refrigerant outlet for communicating with the sub-high pressure gaseous refrigerant outlet, and the two tube box cylinder sections of the condensing chamber are respectively provided with a first circulating water inlet and a first circulating water outlet;

[0009] The shell of the circulating water cooling chamber is provided with a low-pressure liquid refrigerant inlet and a low-pressure gaseous refrigerant outlet for communicating with the secondary high-pressure liquid refrigerant outlet, and the two pipe box barrel sections of the circulating water cooling chamber are respectively provided with a second circulating water inlet and a second circulating water outlet;

[0010] The shell of the rich liquid cooling chamber is provided with a low-pressure liquid refrigerant inlet and a low-pressure gaseous refrigerant outlet for communicating with the sub-high-pressure liquid refrigerant outlet, and the two pipe box cylinder sections of the rich liquid cooling chamber are respectively provided with a low-pressure normal temperature rich liquid inlet and a low-pressure supercooled rich liquid outlet.

[0011] Preferably, the baffle plate includes a baffle plate arranged in the shell and a first baffle plate arranged in the tube box barrel section, and the first baffle plate and the baffle plate are both in a cross shape.

[0012] Preferably, the baffle comprises a second baffle arranged transversely and a third baffle arranged vertically on the second baffle, the generating chamber and the condensing chamber are located above the circulating water cooling chamber and the rich liquid cooling chamber, a first opening is provided above the side wall of the third baffle, the first opening is the outlet of the sub-high pressure gaseous refrigerant of the generating chamber and the inlet of the sub-high pressure gaseous refrigerant of the condensing chamber, and a liquid baffle is provided in the first opening;

[0013] The second partition plate includes an upper plate and a lower plate which are arranged horizontally and at intervals in the shell. The upper plate is provided with a liquid guide hole in the condensing chamber, and the liquid guide hole is the outlet of the sub-high-pressure liquid refrigerant in the condensing chamber. The lower plate is provided with a drainage hole in the circulating water cooling chamber and the rich liquid cooling chamber, and the drainage hole is the inlet of the low-pressure liquid refrigerant. The upper plate is provided with a liquid level switch assembly for sealing the drainage hole.

[0014] Preferably, the liquid level switch assembly comprises a spring member mounted on the upper plate, the bottom end of the spring member passes through the drainage hole and is connected to the switch plug plate, and the top wall of the switch plug plate is in contact with the bottom wall of the lower plate.

[0015] Preferably, a second opening is provided below the side wall of the third partition plate to allow the circulating water cooling chamber and the shell of the rich liquid cooling chamber to communicate with each other.

[0016] Preferably, there are several low-pressure gaseous refrigerant outlets, and the several low-pressure gaseous refrigerant outlets are evenly distributed on the shells of the circulating water cooling chamber and the rich liquid cooling chamber. The outlets of the several low-pressure gaseous refrigerant outlets located on one side of the circulating water cooling chamber are commonly connected to a first conduit, and the outlets of the several low-pressure gaseous refrigerant outlets located on one side of the rich liquid cooling chamber are commonly connected to a second conduit.

[0017] Preferably, a spray device is provided in the shell of the generating chamber, which is connected to the high-pressure rich liquid inlet and is located above the heat exchange tube.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] In this application, the generating chamber, condensing chamber, circulating water cooling chamber and rich liquid cooling chamber are integrated into one device, which can reduce the cost of equipment and pipelines, greatly reduce the floor space of the unit, and is conducive to the skid-mounting of the unit;

[0020] In the present application, the heat source discharged from the generator of the refrigeration system is reused through the generating chamber of the composite generating condensing cooler, and the heat in the heat source is deeply recovered and utilized;

[0021] In the present application, part of the heat source used in the generating chamber of the composite generating condensing cooler will be used to drive the condensing chamber of the composite generating condensing cooler to produce cold capacity, part of the cold capacity is used to cool the circulating water before entering the absorber of the refrigeration system, and the other part of the cold capacity is used to cool the low-pressure rich liquid between the solution pumps entering the refrigeration system, which not only improves the utilization rate of the heat source, but also improves the absorption efficiency of the absorber, ensures the refrigeration efficiency of the refrigeration unit and the process requirements for producing deep cold, and at the same time reduces the cavitation margin of the solution pump, avoids cavitation during pump operation, and also reduces the overall height increase of the unit, reduces the cost of the unit pipeline, and reduces the cost of ultra-high transportation; the original expansion valve is replaced by the liquid level switch assembly and the liquid level switch bottom plate, and the expansion valve originally placed externally in the pipeline is built into the equipment. The risk of valve leakage is reduced and the safety and reliability of operation are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the composite condensation cooler of the utility model;

[0023] Figure 2 This is a schematic diagram of the top view of the structure of the composite condensing cooler of the utility model;

[0024] Figure 3 This is a schematic diagram of the AA-plane cross-sectional structure of the composite condensation cooler of the utility model;

[0025] Figure 4 This is a schematic diagram of the BB-side cross-sectional structure of the composite condensation cooler of the utility model;

[0026] Figure 5 This is a schematic diagram of the CC-plane cross-sectional structure of the composite condensing cooler of the utility model;

[0027] Figure 6 It is an enlarged schematic diagram of the structure at point A of the utility model.

[0028] In the figure: 1. shell; 2. tube box cylinder section; 3. first partition; 4. heat source inlet; 5. heat exchange tube; 6. first circulating water outlet; 7. first circulating water inlet; 8. heat source outlet; 9. low-pressure normal temperature rich liquid inlet; 10. second circulating water outlet; 11. second circulating water inlet; 12. low-pressure supercooled rich liquid outlet; 13. spray device; 14. secondary rich liquid outlet; 15. second partition; 151. upper plate; 152. liquid guide hole; 153. lower plate; 154. drainage hole; 16. low-pressure gaseous refrigerant outlet; 17. third partition; 18. liquid baffle; 19. liquid level switch assembly; 191. spring member; 192. switch plug plate; 20. high-pressure rich liquid inlet; 101. generating chamber; 102. condensing chamber; 103. circulating water cooling chamber; 104. rich liquid cooling chamber. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] See also Figure 1A composite condensing cooler comprises: a tube-sheet heat exchanger, the tube-sheet heat exchanger comprises a shell 1 and two tube-box barrel sections 2, the two tube-box barrel sections 2 are respectively mounted on the two ends of the shell 1 (the tube-box barrel section 2 comprises a tube-box barrel section body and a head and a tube sheet respectively welded on the two ends of the tube-box barrel section body, and the side of the tube sheet away from the tube-box barrel section body is welded to the end of the shell 1), a plurality of heat exchange tubes 5 are arranged in the shell 1, the two ends of the heat exchange tubes 5 are respectively connected with the two tube-box barrel sections 2, and the two tube-box barrel sections 2 are connected through the heat exchange tubes 5.

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The tube-sheet heat exchanger is provided with a baffle plate (the baffle plate is coated with an insulating layer), and the baffle plate divides the inner cavity of the tube-sheet heat exchanger into a mutually isolated generating chamber 101, a condensing chamber 102, a circulating water cooling chamber 103, and a rich liquid cooling chamber 104. The generating chamber 101, the condensing chamber 102, the circulating water cooling chamber 103, and the rich liquid cooling chamber 104 are all composed of a shell 1, a tube box barrel section 2, and a heat exchange tube 5;

[0033] Among them, see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The top of the shell 1 of the generating chamber 101 is provided with a high-pressure rich liquid inlet 20 and a secondary rich liquid outlet 14, the bottom of the shell 1 of the generating chamber 101 is provided with a secondary high-pressure gaseous refrigerant outlet, and the two pipe box cylinder sections 2 of the generating chamber 101 are respectively provided with a heat source inlet 4 and a heat source outlet 8;

[0034] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The shell 1 of the condensing chamber 102 is provided with a sub-high pressure gaseous refrigerant inlet and a sub-high pressure liquid refrigerant outlet for communicating with the sub-high pressure gaseous refrigerant outlet, and the two pipe box barrel sections 2 of the condensing chamber 102 are respectively provided with a first circulating water inlet 7 and a first circulating water outlet 6;

[0035] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The shell 1 of the circulating water cooling chamber 103 is provided with a low-pressure liquid refrigerant inlet and a low-pressure gaseous refrigerant outlet 16 for communicating with the secondary high-pressure liquid refrigerant outlet, and the two pipe box barrel sections 2 of the circulating water cooling chamber 103 are respectively provided with a second circulating water inlet 11 and a second circulating water outlet 10;

[0036] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The shell 1 of the rich liquid cooling chamber 104 is provided with a low-pressure liquid refrigerant inlet and a low-pressure gaseous refrigerant outlet 16 for communicating with the sub-high-pressure liquid refrigerant outlet, and the two pipe box cylinder sections 2 of the rich liquid cooling chamber 104 are respectively provided with a low-pressure normal temperature rich liquid inlet 9 and a low-pressure supercooled rich liquid outlet 12.

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The baffle plate includes a baffle and two first baffles 3. The baffle plate is arranged in the inner cavity of the shell 1. The two first baffles 3 are respectively arranged in the inner cavities of the two pipe box barrel sections 2. The first baffle 3 and the baffle are both cross-shaped. The first baffle 3 and the baffle are used to divide the inner cavities of the shell 1 and the pipe box barrel section 2.

[0038] See also Figure 4 and Figure 6 The baffle plate includes a second baffle plate 15 which is arranged horizontally and a third baffle plate 17 which is arranged vertically on the second baffle plate 15. The generating chamber 101 and the condensing chamber 102 are located above the circulating water cooling chamber 103 and the rich liquid cooling chamber 104. A first opening is provided above the side wall of the third baffle plate 17. The first opening is the outlet of the sub-high pressure gaseous refrigerant of the generating chamber 101 and the inlet of the sub-high pressure gaseous refrigerant of the condensing chamber 102 (the shell 1 of the generating chamber 101 and the condensing chamber 102 are connected through the first opening). A liquid baffle plate 18 is provided in the first opening. The second baffle plate 15 includes an upper plate 151 and a lower plate 153. The upper plate 151 and the lower plate 153 are transversely arranged in the inner cavity of the shell 1, and there is a gap between the upper plate 151 and the lower plate 153. The upper plate 151 is provided with a liquid guide hole 152, which is located inside the condensing chamber 102. The liquid guide hole 152 is the outlet of the sub-high-pressure liquid refrigerant of the condensing chamber 102. The lower plate 153 is provided with a drainage hole 154, and there are multiple drainage holes 154. The multiple drainage holes 154 are respectively located inside the circulating water cooling chamber 103 and the rich liquid cooling chamber 104. The drainage hole 154 is the inlet of the low-pressure liquid refrigerant. The upper plate 151 is provided with a liquid level switch assembly 19;

[0039] Among them, see Figure 6 The liquid level switch assembly 19 includes a spring member 191 mounted on the upper plate 151 , the bottom end of the spring member 191 passes through the drain hole 154 and is connected to the switch plug plate 192 , and the top wall of the switch plug plate 192 is in contact with the bottom wall of the lower plate 153 .

[0040] In this embodiment, as a further optimized solution, please refer to Figure 4A second opening is provided below the side wall of the third partition plate 17 for interconnecting the circulating water cooling chamber 103 with the shell 1 of the rich liquid cooling chamber 104 , that is, the circulating water cooling chamber 103 with the shell 1 of the rich liquid cooling chamber 104 are interconnected.

[0041] In this embodiment, as a further optimized solution, please refer to Figure 2 There are several low-pressure gaseous refrigerant outlets 16, which are evenly distributed on the shell 1 of the circulating water cooling chamber 103 and the rich liquid cooling chamber 104. The outlets of the several low-pressure gaseous refrigerant outlets 16 located on one side of the circulating water cooling chamber 103 are commonly connected to a first conduit, and the outlets of the several low-pressure gaseous refrigerant outlets 16 located on one side of the rich liquid cooling chamber 104 are commonly connected to a second conduit; through the several low-pressure gaseous refrigerant outlets 16, the low-pressure gaseous refrigerant inside the shell 1 of the circulating water cooling chamber 103 and the rich liquid cooling chamber 104 can be quickly discharged.

[0042] In this embodiment, as a further optimized solution, please refer to Figure 1 and Figure 4 A spray device 13 (the spray device 13 includes a pipe and a nozzle installed on the pipe) is installed inside the shell 1 of the generating chamber 101, and is provided with a spray device 13 for communicating with the high-pressure rich liquid inlet 20 and being located above the heat exchange tube 5; the high-pressure rich liquid is sprayed onto the heat exchange tube 5 through the spray device 13, so that the high-pressure rich liquid is in full contact with the heat exchange tube 5, thereby increasing the heat exchange efficiency.

[0043] It should be noted that the above-mentioned composite generator-condenser cooler is used in conjunction with a refrigeration system, which includes a generator, a condenser, an evaporator, an absorber, an expansion valve, a solution pump, and a pressure reducing valve;

[0044] Among them, the composite generating condensing cooler is connected to the refrigeration system in the following way: the high-pressure lean liquid outlet of the generator is connected to the low-pressure lean liquid inlet of the absorber through a pressure reducing valve, the high-pressure gaseous refrigerant outlet of the generator is connected to the high-pressure gaseous refrigerant inlet of the condenser, the high-pressure liquid refrigerant outlet of the condenser is connected to the low-pressure liquid refrigerant inlet of the evaporator through an expansion valve, and the low-pressure gaseous refrigerant outlet of the evaporator is connected to the low-pressure gaseous refrigerant inlet of the absorber; the low-pressure room-temperature rich liquid outlet of the absorber is connected to the low-pressure room-temperature rich liquid inlet 9 of the rich liquid cooling chamber 104, and the low-pressure supercooled rich liquid outlet 12 of the rich liquid cooling chamber 104 is connected through The solution pump is connected to the high-pressure rich liquid inlet 20 of the generating chamber 101, the heat source outlet of the generator is connected to the heat source inlet 4 of the generating chamber 101, the secondary rich liquid outlet 14 of the generating chamber 101 is connected to the rich liquid inlet of the generator, the second circulating water outlet 10 of the circulating water cooling chamber 103 is connected to the circulating water inlet of the absorber, the circulating water outlet of the absorber is connected to the first circulating water inlet 7 of the condensing chamber 102, the first circulating water outlet 6 of the condensing chamber 102 is connected to the circulating water inlet of the condenser, and the low-pressure gaseous refrigerant outlet 16 of the circulating water cooling chamber 103 and the rich liquid cooling chamber 104 is connected to the low-pressure gaseous refrigerant inlet of the absorber.

[0045] The compound condensing cooler works in the refrigeration system as follows:

[0046] First, the heat source from the generator enters the heat exchange tube 5 of the generating chamber 101 through the heat source inlet 4 of the generating chamber 101, and heats the high-pressure rich liquid sprayed on the outer wall of the heat exchange tube 5 by the spray device 13, so that a part of the refrigerant in the rich liquid is desorbed, and the desorbed refrigerant becomes a sub-high-pressure gaseous refrigerant. The rich liquid becomes a sub-rich liquid after a part of the refrigerant is removed, and the heat of the heat source is reused by the generating chamber 101 and then discharged outside the unit;

[0047] Second, the secondary rich liquid is discharged through the secondary rich liquid outlet 14 and enters the generator to be heated and desorbed, and the subsequent refrigeration cycle continues. At the same time, the secondary high-pressure gaseous refrigerant enters the shell 1 of the condensing chamber 102 through the liquid baffle 18;

[0048] It should be noted that after the secondary rich liquid enters the generator, it is heated by the heat source to desorb the refrigerant in the secondary rich liquid. The desorbed refrigerant becomes a high-pressure gaseous refrigerant and enters the condenser, where it is condensed into a high-pressure liquid refrigerant by circulating water. The high-pressure liquid refrigerant is decompressed into a low-pressure liquid refrigerant through an expansion valve. The low-pressure liquid refrigerant enters the evaporator, absorbs the heat of the medium (refrigerant) to be cooled, and vaporizes into a low-pressure gaseous refrigerant. The low-pressure gaseous refrigerant enters the absorber. The secondary rich liquid in the generator becomes a high-pressure lean liquid after the refrigerant is removed. The high-pressure lean liquid is decompressed into a low-pressure lean liquid through a pressure reducing valve, enters the absorber, and is mixed and absorbed with the low-pressure gaseous refrigerant coming out of the evaporator to restore its original concentration and become a low-pressure room-temperature rich liquid.

[0049] Third, the circulating water from the absorber enters the heat exchange tube 5 of the condensing chamber 102 through the first circulating water inlet 7 of the condensing chamber 102, exchanges heat with the sub-high pressure gaseous refrigerant inside the shell 1 of the condensing chamber 102, condenses the sub-high pressure gaseous refrigerant into a sub-high pressure liquid refrigerant, and the circulating water after heat exchange is discharged through the first circulating water outlet 6 and enters the condenser to be used as a heat exchange medium in the condenser;

[0050] Fourth, the sub-high-pressure liquid refrigerant flows into the cavity between the upper plate 151 and the lower plate 153 through the liquid guide hole 152. When the liquid level of the sub-high-pressure liquid refrigerant in the condensing chamber 102 reaches a preset value (i.e., the pressure exerted by the sub-high-pressure liquid refrigerant in the condensing chamber 102 on the switch plug plate 192 is greater than the pulling force of the spring member 191), the spring member 191 stretches, so that the switch plug plate 192 moves downward (a small gap is generated between the switch plug plate 192 and the lower plate 153), and the sub-high-pressure liquid refrigerant passes through the drain hole 154 and the gap between the switch plug plate 192 and the lower plate 153, and is transformed into a low-pressure liquid refrigerant, and enters the interior of the shell 1 of the circulating water cooling chamber 103 and the rich liquid cooling chamber 104;

[0051] It should be noted that when the sub-high-pressure liquid refrigerant enters the interior of the condensing chamber 102, the sub-high-pressure liquid refrigerant will pass through the liquid guide hole 152 into the cavity between the upper plate 151 and the lower plate 153 and exert a downward pressure on the switch plug plate 192; the liquid level switch assembly 19 composed of the switch plug plate 192 and the spring member 191 (spring) will convert the sub-high-pressure liquid refrigerant entering the circulating water cooling chamber 103 and the rich liquid cooling chamber 104 into a low-pressure liquid refrigerant, and there is no need to use an expansion valve for decompression, and the liquid level switch assembly 19 is built into the equipment, which reduces the risk of valve leakage and improves the safety and reliability of operation;

[0052] Fifth, the circulating water from outside the unit enters the heat exchange tube 5 of the circulating water cooling chamber 103 through the second circulating water inlet 11, and exchanges heat with the low-pressure liquid refrigerant inside the shell 1 of the circulating water cooling chamber 103 to cool the circulating water. The cooled circulating water is discharged from the circulating water cooling chamber 103 through the second circulating water outlet 10, and then enters the absorber for circulation. The low-pressure liquid refrigerant is heated and converted into a low-pressure gaseous refrigerant, and then is discharged from the circulating water cooling chamber 103 from the low-pressure gaseous refrigerant outlet 16, and enters the absorber for circulation. At the same time, the heat from the absorber The low-pressure room temperature rich liquid of the absorber enters the heat exchange tube 5 of the rich liquid cooling chamber 104 through the low-pressure room temperature rich liquid inlet 9, and exchanges heat with the low-pressure liquid refrigerant inside the shell 1 of the rich liquid cooling chamber 104 to cool the low-pressure room temperature rich liquid. After the low-pressure room temperature rich liquid is cooled to form a low-pressure supercooled rich liquid, it is discharged from the rich liquid cooling chamber 104 from the low-pressure supercooled rich liquid outlet 12 and enters the solution pump for circulation. After the low-pressure liquid refrigerant is converted into a low-pressure gaseous refrigerant through heat exchange, it is discharged from the rich liquid cooling chamber 104 from the low-pressure gaseous refrigerant outlet 16 and enters the absorber for circulation.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Composite condensing cooler, including: A tube-sheet heat exchanger, the tube-sheet heat exchanger comprising a shell (1) and two tube-box barrel sections (2), the shell (1) being provided with a heat exchange tube (5) communicating with the two tube-box barrel sections (2), characterized in that: a baffle is provided in the tube-sheet heat exchanger, the baffle divides the inner cavity of the tube-sheet heat exchanger into mutually isolated generating chambers (101), condensing chambers (102), circulating water cooling chambers (103) and rich liquid cooling chambers (104), the generating chambers (101), condensing chambers (102), circulating water cooling chambers (103) and rich liquid cooling chambers (104) all being composed of the shell (1), the tube-box barrel sections (2) and the heat exchange tubes (5); The generating chamber (101) is used to recover heat discharged from a heat source of a refrigeration system generator; the condensing chamber (102) is used to use the heat recovered by the generating chamber (101) for refrigeration; the circulating water cooling chamber (103) is used to use the cold energy generated by the condensing chamber (102) to cool the circulating water before entering the refrigeration system absorber; and the rich liquid cooling chamber (104) is used to use the cold energy generated by the condensing chamber (102) to cool the low-pressure rich liquid before entering the refrigeration system solution pump.

2. The composite condensing cooler according to claim 1 is characterized in that: The shell (1) of the generating chamber (101) is provided with a high-pressure rich liquid inlet (20), a secondary rich liquid outlet (14), and a secondary high-pressure gaseous refrigerant outlet, and the two pipe box cylinder sections (2) of the generating chamber (101) are respectively provided with a heat source inlet (4) and a heat source outlet (8); The shell (1) of the condensing chamber (102) is provided with a sub-high pressure gaseous refrigerant inlet and a sub-high pressure liquid refrigerant outlet for communicating with the sub-high pressure gaseous refrigerant outlet, and the two pipe box barrel sections (2) of the condensing chamber (102) are respectively provided with a first circulating water inlet (7) and a first circulating water outlet (6); The shell (1) of the circulating water cooling chamber (103) is provided with a low-pressure liquid refrigerant inlet and a low-pressure gaseous refrigerant outlet (16) for communicating with the secondary high-pressure liquid refrigerant outlet, and the two pipe box barrel sections (2) of the circulating water cooling chamber (103) are respectively provided with a second circulating water inlet (11) and a second circulating water outlet (10); The shell (1) of the rich liquid cooling chamber (104) is provided with a low-pressure liquid refrigerant inlet and a low-pressure gaseous refrigerant outlet (16) for communicating with the sub-high-pressure liquid refrigerant outlet, and the two pipe box cylinder sections (2) of the rich liquid cooling chamber (104) are respectively provided with a low-pressure normal temperature rich liquid inlet (9) and a low-pressure supercooled rich liquid outlet (12).

3. The composite condensing cooler according to claim 1 is characterized in that: The baffle plate comprises a baffle plate arranged in the shell (1) and a first baffle plate (3) arranged in the tube box barrel section (2); the first baffle plate (3) and the baffle plate are both in a cross shape.

4. The composite condensing cooler according to claim 3 is characterized in that: The baffle comprises a second baffle (15) arranged transversely and a third baffle (17) arranged vertically on the second baffle (15); the generating chamber (101) and the condensing chamber (102) are located above the circulating water cooling chamber (103) and the rich liquid cooling chamber (104); a first opening is provided above the side wall of the third baffle (17); the first opening is an outlet for the sub-high pressure gaseous refrigerant of the generating chamber (101) and an inlet for the sub-high pressure gaseous refrigerant of the condensing chamber (102); a liquid baffle (18) is provided in the first opening; The second partition plate (15) comprises an upper plate (151) and a lower plate (153) which are arranged transversely and at intervals in the shell (1); the upper plate (151) is provided with a liquid guide hole (152) in the condensing chamber (102); the liquid guide hole (152) is an outlet for the sub-high-pressure liquid refrigerant in the condensing chamber (102); the lower plate (153) is provided with a liquid discharge hole (154) in the circulating water cooling chamber (103) and the rich liquid cooling chamber (104); the liquid discharge hole (154) is an inlet for the low-pressure liquid refrigerant; and the upper plate (151) is provided with a liquid level switch assembly (19) for blocking the liquid discharge hole (154).

5. The composite condensing cooler according to claim 4 is characterized in that: The liquid level switch assembly (19) comprises a spring member (191) mounted on the upper plate (151); the bottom end of the spring member (191) passes through the drainage hole (154) and is connected to the switch plug plate (192); the top wall of the switch plug plate (192) is in contact with the bottom wall of the lower plate (153).

6. The composite condensing cooler according to claim 4 is characterized in that: A second opening is provided below the side wall of the third partition plate (17) to allow the circulating water cooling chamber (103) and the shell (1) of the rich liquid cooling chamber (104) to communicate with each other.

7. The composite condensing cooler according to claim 2 is characterized in that: There are a plurality of low-pressure gaseous refrigerant outlets (16), and the plurality of low-pressure gaseous refrigerant outlets (16) are evenly distributed on the shell (1) of the circulating water cooling chamber (103) and the rich liquid cooling chamber (104); the outlets of the plurality of low-pressure gaseous refrigerant outlets (16) located on one side of the circulating water cooling chamber (103) are commonly connected to a first conduit, and the outlets of the plurality of low-pressure gaseous refrigerant outlets (16) located on one side of the rich liquid cooling chamber (104) are commonly connected to a second conduit.

8. The composite condensing cooler according to claim 1 is characterized in that: A spray device (13) is provided in the shell (1) of the generating chamber (101) and is used to communicate with the high-pressure rich liquid inlet (20) and is located above the heat exchange tube (5).

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