Tower type refrigerator

Abstract

The utility model discloses a tower-type refrigerator in the technical field of refrigeration equipment, which comprises a tower body and a partition plate arranged in the tower body, and the partition plate is used for dividing an inner cavity of the tower body into a first cavity and a second cavity which are isolated from each other and are distributed up and down; an absorption section and an evaporation section are arranged on the upper side and the lower side of an inner cavity of the first cavity respectively, a condensation section and a generation section are arranged on the upper side and the lower side of an inner cavity of the second cavity respectively, the second cavity is used for heat of an external heat source, and the first cavity is used for refrigerating through the heat; the refrigerating unit is integrated into the tower type refrigerating machine and the solution pump through equipment integration, laying of pipelines is reduced, the cost is reduced, and meanwhile the occupied area of refrigerating equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a tower refrigerator. Background Art

[0002] The 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 a generator, a condenser, an evaporator, an absorber, an expansion valve, a pressure reducing valve and a solution pump; the generator uses waste heat to heat the rich liquid to produce a lean liquid and a high-pressure gaseous refrigerant, the condenser uses circulating water to cool the high-pressure gaseous refrigerant into a high-pressure liquid refrigerant, and the evaporator uses the high-pressure liquid refrigerant after the pressure is reduced by the expansion valve to absorb the heat of the external refrigerant, so that the refrigerant is cooled to provide cooling to the outside world, and at the same time produces a low-pressure gaseous refrigerant. The absorber mixes the low-pressure gaseous refrigerant with the lean liquid to form a rich liquid, which is then transported to the generator by a solution pump for recirculation. The generator, condenser, evaporator and absorber are generally separated from each other, which results in the need to install and fix the above components separately during assembly of the refrigeration unit, and then connect the components together, which increases the installation time of the refrigeration unit and makes the installation process more complicated. In addition, the connection between the components also requires the laying of more pipes, which increases the production cost and also makes the overall space occupied by the refrigeration unit larger. Utility Model Content

[0003] The purpose of the present invention is to provide a tower refrigerator to solve the problem in the above background technology that the components of the refrigeration unit are generally separated independently, resulting in the need to install each component separately during assembly of the refrigeration unit, which increases the installation time.

[0004] To achieve the above object, the present invention provides the following technical solution: a tower refrigerator, comprising: a tower body and a partition provided in the tower body, wherein the partition is used to divide the inner cavity of the tower body into a first cavity and a second cavity which are isolated from each other and distributed vertically;

[0005] The upper and lower sides of the inner cavity of the first cavity are respectively an absorption section and an evaporation section, and the upper and lower sides of the inner cavity of the second cavity are respectively a condensation section and a generation section. The second cavity is used for heat from an external heat source, and the first cavity uses this heat for cooling.

[0006] Preferably, a first right-angled baffle and a first spiral coil located in the first right-angled baffle are provided above the inner cavity of the first cavity, a rich liquid outlet is provided at the bottom of the first right-angled baffle, a lean liquid inlet is provided at the top of the first cavity, and a pressure reducing member is provided on the lean liquid inlet; a heat exchange straight pipe is provided below the inner cavity of the first cavity, both ends of the heat exchange straight pipe extend to the outside of the tower body and are respectively connected to two first pipe box sections, one of the first pipe box sections is provided with a cold water inlet and a tower top product condensate inlet, and the other first pipe box section is provided with a cold water outlet and a tower top product condensate outlet; a liquid refrigerant inlet is provided on the side wall of the first cavity between the first right-angled baffle and the heat exchange straight pipe, and an expansion member is provided on the liquid refrigerant inlet;

[0007] A second right-angled partition and a U-shaped heat exchange tube in the second right-angled partition are provided above the inner cavity of the second cavity. Both ends of the U-shaped heat exchange tube extend to the outside of the tower body and are connected with the second pipe box barrel section. A circulating water inlet and a circulating water outlet are provided on the second pipe box barrel section. The circulating water inlet is connected with the first spiral coil. The bottom of the second right-angled partition is provided with a liquid refrigerant outlet for connecting with the liquid refrigerant inlet. A second spiral coil and a nozzle above the second spiral coil are provided below the inner cavity of the second cavity. A lean liquid outlet for connecting with the lean liquid inlet is provided at the bottom of the second cavity.

[0008] Preferably, the rich liquid outlet is connected to the nozzle via a solution pump.

[0009] Preferably, a first orifice plate and a second orifice plate are provided in the first cavity, the first orifice plate is located above the first spiral coil, and the second orifice plate is located between the liquid refrigerant inlet and the heat exchange straight tube.

[0010] Preferably, the expansion member includes a second elastic member, a second plug plate, a second groove and a second bottom plate, and the pressure relief member includes a first bottom plate, a first groove, a first plug plate and a first elastic member.

[0011] Preferably, a first partition plate is provided in each of the two first pipe box sections, and the first partition plate is used to separate the cold water inlet from the top product condensate inlet, and the cold water outlet from the top product condensate outlet. A second partition plate is provided in the second pipe box section, and the second partition plate is used to separate the circulating water inlet from the circulating water outlet.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] In this application, the refrigeration unit is integrated into a tower refrigeration unit through equipment integration, which reduces the laying of pipelines, reduces costs, and reduces the floor space occupied by the refrigeration equipment, making the refrigeration unit more convenient during installation;

[0014] The tower refrigerator in the present application is divided into an absorption section, an evaporation section, a condensation section and a generation section from top to bottom through a reasonable spatial arrangement; by utilizing the height difference of the liquid level and the mutual conversion between the static pressure energy and the pressure energy of the liquid, the low-pressure rich liquid before entering the solution pump is converted into a medium-pressure rich liquid, which can reduce the head of the solution pump in the refrigeration unit, thereby reducing energy consumption, and converting the high-pressure liquid refrigerant before entering the expansion component into a medium-pressure liquid refrigerant, and the high-pressure lean liquid before entering the pressure reducing component into a medium-pressure lean liquid. At the same time, by setting an expansion component and a pressure reducing component, the expansion valve and the pressure reducing valve in the original refrigeration unit are replaced, and the expansion valve and the pressure reducing valve originally placed externally in the pipeline are built into the tower body, which reduces the risk of valve leakage and improves the safety and reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of the tower refrigerator of the utility model;

[0016] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0017] Figure 3 For this utility model Figure 1 Enlarged structural diagram at point B in the middle.

[0018] In the figure: 1. expansion member; 101. second elastic member; 102. second plug plate; 103. second groove; 104. second bottom plate; 2. pressure reducing member; 201. first bottom plate; 202. first groove; 203. first plug plate; 204. first elastic member; 3. tower body; 301. first cavity; 302. second cavity; 4. partition; 5. first orifice plate; 6. first right-angle partition; 7. first spiral coil; 8. second orifice plate; 9. straight heat exchange tube; 10. first tube box section; 11. first partition plate; 12. second right-angle partition plate; 13. U-shaped heat exchange tube; 14. second tube box section; 15. second partition plate; 16. second spiral coil; 17. nozzle; 18. solution pump. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] See also Figure 1The tower refrigerator includes a tower body 3, and a partition 4 is installed in the inner cavity of the tower body 3. The partition 4 is used to divide the inner cavity of the tower body 3 into a first cavity 301 and a second cavity 302. The first cavity 301 and the second cavity 302 are isolated from each other, and the first cavity 301 is located above the second cavity 302.

[0022] See also Figure 1 A first right-angle partition plate 6 is provided on one side wall above the inner cavity of the first cavity 301 (the first right-angle partition plate 6 cooperates with the inner side wall of the tower body 3 to form a space with only the top open), a channel is formed between the side wall of the first right-angle partition plate 6 and the other side wall above the inner cavity of the first cavity 301 (the channel is for the gaseous refrigerant to pass through), a first spiral coil 7 is installed in the inner cavity of the first cavity 301, the first spiral coil 7 is located on the inner side of the first right-angle partition plate 6, a rich liquid outlet is provided at the bottom of the first right-angle partition plate 6, and a lean liquid inlet is provided at the top of the first cavity 301 (the lean liquid inlet is located just above the first spiral coil 7 A pressure reducing member 2 is provided on the lean liquid inlet; a transversely arranged heat exchange straight pipe 9 is provided below the inner cavity of the first cavity 301, both ends of the heat exchange straight pipe 9 extend to the outside of the tower body 3, and both ends of the heat exchange straight pipe 9 are connected to a first pipe box barrel section 10, one first pipe box barrel section 10 is provided with a cold water inlet and a tower top product condensate inlet, and the other first pipe box barrel section 10 is provided with a cold water outlet and a tower top product condensate outlet, a liquid refrigerant inlet is opened on the side wall of the first cavity 301, the liquid refrigerant inlet is located between the first right-angle partition 6 and the heat exchange straight pipe 9, and an expansion member 1 is provided on the liquid refrigerant inlet;

[0023] It should be noted that the interior of the first spiral coil 7 is used to pass circulating water; the expansion member 1 and the pressure reducing member 2 are both installed inside the tower body 3 .

[0024] See also Figure 1A second right-angled partition 12 is provided on one side wall above the inner cavity of the second cavity 302 (the second right-angled partition 12 cooperates with the inner side wall of the tower body 3 to form a space with only the top open). A channel is formed between the side wall of the second right-angled partition 12 and the other side wall above the inner cavity of the second cavity 302 (the channel is for the gaseous refrigerant to pass through). A U-shaped heat exchange tube 13 is installed in the inner cavity of the second cavity 302. The U-shaped heat exchange tube 13 is on the inner side of the second right-angled partition 12. Both ends of the U-shaped heat exchange tube 13 extend to the outside of the tower body 3, and both ends of the U-shaped heat exchange tube 13 are connected to the outer side of the tower body 3. A second pipe-box barrel section 14 is connected, and a circulating water inlet and a circulating water outlet are provided on the second pipe-box barrel section 14. The circulating water inlet is connected to the outlet of the first spiral coil 7. A liquid refrigerant outlet is provided at the bottom of the second right-angle partition 12, and the liquid refrigerant outlet is connected to the liquid refrigerant inlet. A second spiral coil 16 and a nozzle 17 are provided below the inner cavity of the second cavity 302, and the nozzle 17 is located above the second spiral coil 16. A lean liquid outlet is provided at the bottom of the second cavity 302, and the lean liquid outlet is connected to the lean liquid inlet. The rich liquid outlet is connected to the nozzle 17 through a solution pump 18.

[0025] In this embodiment, as a further optimization solution, please refer to Figure 1 A first orifice plate 5 and a second orifice plate 8 are provided in the inner cavity of the first cavity 301 . The first orifice plate 5 is located above the first spiral coil 7 , and the second orifice plate 8 is located between the liquid refrigerant inlet and the heat exchange straight tube 9 .

[0026] In this embodiment, as a further optimization solution, please refer to Figure 1-Figure 3 The expansion member 1 includes a second elastic member 101 (spring), a second plug plate 102, a second groove 103 and a second bottom plate 104. The second bottom plate 104 is installed on the right side wall of the first cavity 301. The second groove 103 is provided on the left side wall of the second bottom plate 104, and the second groove 103 is communicated with the liquid refrigerant inlet. The second elastic member 101 is provided on the left side wall of the first cavity 301. The right end of the second elastic member 101 is connected to the second plug plate 102. The right side wall of the second plug plate 102 is in contact with the left side wall of the second bottom plate 104, and the second plug Plate 102 covers the second groove 103; the pressure reducing member 2 includes a first bottom plate 201, a first groove 202, a first plug plate 203 and a first elastic member 204 (spring). The first bottom plate 201 is installed at the top of the inner cavity of the first cavity 301, the first groove 202 is provided at the bottom of the first bottom plate 201, the first elastic member 204 is installed on the first orifice plate 5, the top of the first elastic member 204 is connected to the first plug plate 203, the top of the first plug plate 203 is fitted with the bottom of the first bottom plate 201, and the first plug plate 203 covers the first groove 202.

[0027] It should be noted that the expansion valve and the pressure reducing valve in the original refrigeration unit are replaced by the expansion member 1 and the pressure reducing member 2, and the expansion valve and the pressure reducing valve originally placed externally in the pipeline are built into the tower body 3, thereby reducing the risk of valve leakage and improving the safety and reliability of operation.

[0028] In this embodiment, as a further optimization solution, please refer to Figure 1 A first partition plate 11 is provided in each of the two first pipe box barrel sections 10. The first partition plate 11 is used to separate the cold water inlet from the tower top product condensate inlet, and the cold water outlet from the tower top product condensate outlet, so that the cold water and the tower top product condensate will not be mixed together. A second partition plate 15 is provided in the second pipe box barrel section 14. The second partition plate 15 is used to separate the circulating water inlet and the circulating water outlet.

[0029] It should be noted that the partition 4 , the first right-angle partition 6 , the second right-angle partition 12 , the first partition 11 , and the second partition 15 are all made of heat-insulating materials.

[0030] It should also be noted that the upper part of the first cavity 301 is the absorption section (including the first spiral coil 7, the first right-angle partition 6 and other components), the lower part of the first cavity 301 is the evaporation section (including the heat exchange straight tube 9 and other components), the upper part of the second cavity 302 is the condensation section (including the U-shaped heat exchange tube 13 and the second right-angle partition 12 and other components), and the lower part of the second cavity 302 is the generation section (including the nozzle 17 and the second spiral coil 16 and other components).

[0031] Here's how it works:

[0032] First, an external heat source enters the second spiral coil 16 inside the second cavity 302 and heats the high-pressure rich liquid sprayed on the surface of the second spiral coil 16 by the nozzle 17, desorbing most of the low-boiling-point refrigerant in the rich liquid and converting it into high-pressure gaseous refrigerant. After the refrigerant is removed, the high-pressure rich liquid becomes a high-pressure lean liquid, and the heat source after heat exchange is discharged from the second spiral coil 16;

[0033] Second, the high-pressure gaseous refrigerant moves upward and enters the inner side of the second right-angled partition 12 and contacts the U-shaped heat exchange tube 13. It is cooled by the circulating water flowing inside the U-shaped heat exchange tube 13 and becomes a high-pressure liquid refrigerant. The high-pressure liquid refrigerant is discharged from the liquid refrigerant outlet of the second right-angled partition 12 and enters the interior of the first cavity 301 from the liquid refrigerant inlet. After being decompressed by the expansion element 1 (due to the increase in the height of the pipeline and the increase in the static pressure of the liquid column, the high-pressure liquid refrigerant has become a medium-pressure liquid refrigerant before entering the expansion element 1. The medium-pressure liquid refrigerant pushes the second elastic element 101 of the expansion element 1. Because the pressure of the medium-pressure liquid refrigerant is slightly greater than the thrust of the second elastic element 101, the second plug plate 102 is slightly opened. The medium-pressure liquid refrigerant passes through the micro-opening between the second bottom plate 104 and the second plug plate 102 and is throttled and decompressed to become a low-pressure liquid refrigerant), it becomes a low-pressure liquid refrigerant.

[0034] Third, the low-pressure liquid refrigerant is evenly distributed on the outer surface of the heat exchange straight tube 9 through the second orifice plate 8, absorbs the heat of the coolant flowing inside the heat exchange straight tube 9, and vaporizes itself into low-pressure gaseous refrigerant. The cooled coolant is discharged from the heat exchange straight tube 9 to provide cooling to the outside world.

[0035] Fourth, the low-pressure gaseous refrigerant enters the inner side of the first right-angle partition 6 upward and contacts the first spiral coil 7. The high-pressure lean liquid in the second cavity 302 is discharged from the lean liquid outlet, transported upward through the pipeline, and enters the inner cavity of the first cavity 301 from the lean liquid inlet, and is reduced in pressure to low-pressure lean liquid through the pressure reducing member 2 (due to the increase in the height of the pipeline and the increase in the static pressure of the liquid column, the high-pressure lean liquid has become medium-pressure lean liquid before entering the pressure reducing member 2. The medium-pressure lean liquid pushes the first elastic member 204 of the pressure reducing member 2. Because the pressure of the medium-pressure lean liquid is slightly greater than the thrust of the first elastic member 204, the first plug plate 203 is slightly moved downward to open, and the medium-pressure lean liquid is throttled and reduced in pressure to low-pressure lean liquid through the micro-opening between the first bottom plate 201 and the first plug plate 203). The low-pressure lean liquid passes through the first orifice plate 5 is evenly distributed on the outer surface of the first spiral coil 7 and mixed with the incoming low-pressure gaseous refrigerant to form a low-pressure rich liquid. The heat generated in this process is carried away by the circulating water in the first spiral coil 7 (the circulating water inside the first spiral coil 7 flows into the interior of the U-shaped heat exchange tube 13 after being discharged). The low-pressure rich liquid is discharged from the rich liquid outlet and transported to the solution pump 18 through the pipeline. As the height of the pipeline decreases, the gravitational potential energy of the liquid is converted into the pressure energy of the liquid. Before entering the solution pump 18, the low-pressure rich liquid has become a medium-pressure rich liquid (which can reduce the head of the solution pump 18 and thus reduce energy consumption). The medium-pressure rich liquid is further pressurized by the solution pump 18 and then sent to the nozzle 17 for recycling. The circulating water is first used to cool the solution in the absorption section and then used to cool the condensation section.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Tower refrigerator, including: A tower body (3) and a partition (4) arranged in the tower body (3), characterized in that the partition (4) is used to divide the inner cavity of the tower body (3) into a first cavity (301) and a second cavity (302) that are isolated from each other and distributed up and down; The upper and lower sides of the inner cavity of the first cavity (301) are respectively an absorption section and an evaporation section, and the upper and lower sides of the inner cavity of the second cavity (302) are respectively a condensation section and a generation section. The second cavity (302) is used to recover heat from an external heat source, and the first cavity (301) uses the heat for cooling.

2. The tower refrigerator according to claim 1, wherein: A first right-angled partition (6) and a first spiral coil (7) located in the first right-angled partition (6) are provided above the inner cavity of the first cavity (301); a rich liquid outlet is provided at the bottom of the first right-angled partition (6); a lean liquid inlet is provided at the top of the first cavity (301); a pressure reducing member (2) is provided on the lean liquid inlet; a heat exchange straight pipe (9) is provided below the inner cavity of the first cavity (301); both ends of the heat exchange straight pipe (9) extend to the outside of the tower body (3) and are respectively connected to two first pipe box barrel sections (10); a cold water inlet and a tower top product condensate inlet are provided on one of the first pipe box barrel sections (10); a cold water outlet and a tower top product condensate outlet are provided on the other first pipe box barrel section (10); a liquid refrigerant inlet is provided between the first right-angled partition (6) and the heat exchange straight pipe (9) on the side wall of the first cavity (301); an expansion member (1) is provided on the liquid refrigerant inlet; A second right-angled partition (12) and a U-shaped heat exchange tube (13) located in the second right-angled partition (12) are provided above the inner cavity of the second cavity (302). Both ends of the U-shaped heat exchange tube (13) extend to the outside of the tower body (3) and are in communication with the second tube box barrel section (14). A circulating water inlet and a circulating water outlet are provided on the second tube box barrel section (14). The circulating water inlet is in communication with the first spiral coil (7). A liquid refrigerant outlet for communicating with the liquid refrigerant inlet is provided at the bottom of the second right-angled partition (12). A second spiral coil (16) and a nozzle (17) located above the second spiral coil (16) are provided below the inner cavity of the second cavity (302). A lean liquid outlet for communicating with the lean liquid inlet is provided at the bottom of the second cavity (302).

3. The tower refrigerator according to claim 2, wherein: The rich liquid outlet is connected to the nozzle (17) through a solution pump (18).

4. The tower refrigerator according to claim 2, wherein: A first orifice plate (5) and a second orifice plate (8) are provided in the first cavity (301), wherein the first orifice plate (5) is located above the first spiral coil (7), and the second orifice plate (8) is located between the liquid refrigerant inlet and the heat exchange straight tube (9).

5. The tower refrigerator according to claim 2, wherein: The expansion member (1) comprises a second elastic member (101), a second plug plate (102), a second groove (103) and a second bottom plate (104); the decompression member (2) comprises a first bottom plate (201), a first groove (202), a first plug plate (203) and a first elastic member (204).

6. The tower refrigerator according to claim 2, wherein: A first partition plate (11) is provided in each of the two first pipe box barrel sections (10), and the first partition plate (11) is used to separate the cold water inlet from the tower top product condensate inlet, and the cold water outlet from the tower top product condensate outlet. A second partition plate (15) is provided in the second pipe box barrel section (14), and the second partition plate (15) is used to separate the circulating water inlet from the circulating water outlet.

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