Rotating wheel switching type adsorption refrigeration device

Abstract

The utility model discloses a rotating wheel switching type adsorption refrigeration device, and relates to an adsorption refrigeration device. In order to solve the problem that the mass transfer efficiency is reduced due to the fact that an existing fixed single-bed or multi-bed adsorption refrigeration device is too large in size, the rotating wheel switching type adsorption refrigeration device is composed of an inner barrel, an annular hollow outer shell, an evaporator, a condenser and a liquid storage tank. A plurality of adsorption beds are arranged to perform adsorption and desorption processes at the same time, and rotary-cut conversion adsorption and desorption functions are performed, so that continuous cooling can be realized; meanwhile, the multi-channel medium pipe is arranged, the problem that the mass transfer efficiency is reduced due to the too large size is effectively solved, the annular hollow outer shell is in a fixed state, arrangement is convenient, and the occupied area is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of adsorption refrigeration device. BACKGROUND

[0002] Adsorption refrigeration technology is a technology that uses solid adsorbent to absorb and release heat during adsorption and desorption to achieve refrigeration, with the advantages of not using Freon and other environmental deterioration substances, low noise, low energy consumption, etc. The basic structure of adsorption refrigeration includes generator, condenser, liquid accumulator, evaporator, adsorber and valve modules. Compared with traditional compressor refrigeration, it has lower energy consumption. Adsorption refrigeration technology can use lower temperature industrial waste heat and solar energy as driving heat source, suitable for environmental requirements, and has simple structure, no moving parts, no noise, good shock resistance and almost no site restrictions, with wide application prospect and value, especially suitable for renewable energy and low temperature energy applications. In addition, adsorption refrigeration technology can also heat the adsorption bed by auxiliary energy to provide hot water for daily use and other functions. Compared with absorption refrigeration, adsorption refrigeration can be driven by various low-grade heat sources, including solar energy, engine exhaust, etc., with more flexible energy selection. In contrast, absorption refrigeration can also use low-grade heat energy such as waste heat, but its requirements for heat source may be more stringent. Adsorption refrigeration uses water, ammonia, methanol and other refrigerants, which are harmless to the environment and ozone layer, meeting environmental requirements. Adsorption refrigeration system usually does not require solution pump or rectification device, and the system structure is relatively simple. Secondly, adsorption refrigeration has stable refrigeration effect, even when the hot water inlet temperature is low, it can maintain high refrigeration effect, and is suitable for various scale refrigeration requirements, from small air conditioning systems to large refrigeration equipment. However, the refrigeration effect of absorption refrigeration system may be affected by heat source temperature and refrigerant circulation, and is only suitable for large refrigeration or air conditioning equipment, such as central air conditioning systems in commercial buildings. The operating cost of adsorption refrigeration system is usually low, and compared with conventional systems, it can save a lot of energy costs.

[0003] Conventional fixed single-bed or multi-bed adsorption refrigeration belongs to intermittent operation condition, usually needs to go through adsorption and desorption processes, which are separated in time, resulting in intermittent operation characteristics of the system. And the volume of adsorption bed in traditional adsorption refrigeration is usually large, which increases the land area and space requirement of the system. Larger adsorption bed volume may also lead to lower mass transfer efficiency of refrigerant in the adsorption bed, because refrigerant needs longer time to diffuse into the entire adsorption bed. SUMMARY

[0004] The utility model discloses in order to solve the problem of the mass transfer efficiency reduction caused by the too large volume of the current fixed single bed or multi-bed adsorption refrigeration, through setting up multiple adsorption beds simultaneously adsorbing and desorbing process, and carrying out rotary cutting conversion adsorption and desorption function, can realize the continuous cooling supply, simultaneously through setting up multichannel medium pipe, effectively solve the problem of the mass transfer efficiency reduction caused by the too large volume, the annular hollow outer shell body (2) of the new type is in the fixed state, and the land area is reduced conveniently.

[0005] The utility model discloses a rotary wheel switching type adsorption refrigeration device is constituted by inner cylinder (1), annular hollow outer shell body (2), evaporimeter (33), condenser (34) and liquid storage tank (35).

[0006] The inner cylinder (1) is hollow cylinder, and four mutually perpendicular inner cylinder partition plates (15) are arranged vertically on the inner cylinder (1), and the inner cylinder (1) is divided into a first adsorption bed (11), a second adsorption bed (12), a third adsorption bed (13) and a fourth adsorption bed (14) by the inner cylinder partition plate (15); a plurality of vertical porous mass transfer pipes (4) are arranged in the first adsorption bed (11), the second adsorption bed (12), the third adsorption bed (13) and the fourth adsorption bed (14) respectively; the bottom of the inner cylinder (1) is sealed, the top of the inner cylinder (1) is sealed by the inner cylinder cover (3), and the upper end of the porous mass transfer pipe (4) is arranged outside the inner cylinder cover (3);

[0007] The annular hollow outer shell body (2) is formed by sleeving an inner tube and an outer tube, and the annular cavity formed between the inner tube and the outer tube is sealed at both ends; the inner cylinder (1) is arranged inside the inner tube of the annular hollow outer shell body (2), and the gap between the inner cylinder (1) and the inner tube of the annular hollow outer shell body (2) is filled with a lubricant (16); four vertical night separation strips (36) are arranged between the outer wall of the inner cylinder (1) and the inner tube of the annular hollow outer shell body (2), the night separation strips (36) are arranged correspondingly to the inner cylinder partition plate (15), four vertical annular cavity partition plates (17) are arranged in the annular cavity of the annular hollow outer shell body (2) and correspond to the positions of the inner cylinder partition plate (15), and the four annular cavity partition plates (17) divide the annular cavity into a first heat exchange cavity (7), a second heat exchange cavity (8), a third heat exchange cavity (9) and a fourth heat exchange cavity (10);

[0008] The lower part of the first heat exchange cavity (7) is provided with a cooling water inlet, and the upper part of the first heat exchange cavity (7) is provided with a cooling water outlet; the lower part of the third heat exchange cavity (9) is provided with a cooling water inlet, and the upper part of the third heat exchange cavity (9) is provided with a cooling water outlet; the lower part of the second heat exchange cavity (8) is provided with a heat medium inlet, and the upper part of the second heat exchange cavity (8) is provided with a heat medium outlet; the lower part of the fourth heat exchange cavity (10) is provided with a heat medium inlet, and the upper part of the fourth heat exchange cavity (10) is provided with a heat medium outlet; the 1# pipeline (19), the 2# pipeline (20), the 3# pipeline (21) and the 4# pipeline (22) are all provided with valves;

[0009] The refrigerant outlet of the evaporator (33) is connected with the 1# pipeline (19) and the 2# pipeline (20), the outlet of the 2# pipeline (20) is connected with the 4# pipeline (22), the refrigerant inlet of the evaporator (33) is connected with the refrigerant outlet of the liquid storage tank (35) through the 9# pipeline (27), the refrigerant inlet of the liquid storage tank (35) is connected with the refrigerant outlet of the condenser (34) through the 10# pipeline (28), the refrigerant inlet of the condenser (34) is connected with the 3# pipeline (21) and the 4# pipeline (22), and the inlet of the 3# pipeline (21) is connected with the 1# pipeline (19); one end of the porous mass transfer pipe (4) in the first adsorption bed (11) is connected with one end of the 5# pipeline (23), one end of the porous mass transfer pipe (4) in the third adsorption bed (13) is connected with one end of the 6# pipeline (24), the other end of the 5# pipeline (23), the other end of the 6# pipeline (24) and the outlet end connected with the 1# pipeline (19) are respectively connected with three interfaces of the 1# three-way regulating valve (29); one end of the porous mass transfer pipe (4) in the second adsorption bed (12) is connected with one end of the 8# pipeline (26), one end of the porous mass transfer pipe (4) in the fourth adsorption bed (14) is connected with one end of the 7# pipeline (25), the other end of the 8# pipeline (26), the other end of the 7# pipeline (25) and the outlet end of the 4# pipeline (22) are respectively connected with three interfaces of the 2# three-way regulating valve (30);

[0010] The center of the inner cylinder (1) is provided with a rotating shaft (5); the rotating shaft (5) is connected with a driving device.

[0011] The method for refrigeration by the rotating wheel switching type adsorption refrigeration device is as follows:

[0012] I. Close the valves on the 2# line (20) and the 3# line (21), and open the valves on the 1# line (19) and the 4# line (22); the refrigerant in the liquid storage tank (35) enters the evaporator (33) through the 9# line (27), and the refrigerant evaporates into refrigerant vapor in the evaporator (33), the refrigerant vapor enters the first adsorption bed (11) through the 1# line (19), the 5# line (23) and the mass transfer pipe (4) in turn, and enters the third adsorption bed (13) through the 1# line (19), the 6# line (24) and the mass transfer pipe (4) in turn, and the refrigerant vapor is adsorbed by the adsorbent in the adsorption bed; at the same time, cooling water is transported into the first heat exchange cavity (7) and the third heat exchange cavity (9) through the cooling water inlet arranged at the lower part of the first heat exchange cavity (7) and the cooling water inlet arranged at the lower part of the third heat exchange cavity (9), and the cooling water removes the heat generated in the adsorption process; at the same time, the heat medium is transported into the second heat exchange cavity (8) and the fourth heat exchange cavity (10) through the heat medium inlet arranged at the lower part of the second heat exchange cavity (8) and the heat medium inlet arranged at the lower part of the fourth heat exchange cavity (10), and the heat medium heats the adsorbent in the second adsorption bed (12) and the fourth adsorption bed (14) to release refrigerant vapor, and the refrigerant vapor returns to the condenser (34) through the 7# line (25) and the 4# line (22), and through the 8# line (26) and the 4# line (22) to release heat and condense into liquid, and finally enters the liquid storage tank (35) through the 10# line (28), and then enters the evaporator (33) through the 9# line (27) to complete the refrigeration cycle;

[0013] II. Rotate the inner cylinder (1) clockwise by 90°, open the valves on the 2# line (20) and the 3# line (21), and close the valves on the 1# line (19) and the 4# line (22); the refrigerant evaporates into refrigerant vapor in the evaporator (33), the refrigerant vapor is adsorbed by the adsorbent in the fourth adsorption bed (14) through the 2# line (20), the 7# line (25) and the mass transfer pipe (4) in turn, and is adsorbed by the adsorbent in the second adsorption bed (12) through the 2# line (20), the 8# line (26) and the mass transfer pipe (4); at the same time, cooling water is transported into the first heat exchange cavity (7) and the third heat exchange cavity (9) through the cooling water inlet arranged at the lower part of the first heat exchange cavity (7) and the cooling water inlet arranged at the lower part of the third heat exchange cavity (9), and the cooling water removes the heat generated in the adsorption process of the second adsorption bed (12) and the fourth adsorption bed (14);

[0014] Meanwhile, the heat medium is delivered into the second heat exchange cavity (8) and the fourth heat exchange cavity (10) through the heat medium inlet arranged at the lower part of the second heat exchange cavity (8) and the heat medium inlet arranged at the lower part of the fourth heat exchange cavity (10), and the adsorbing medium in the second adsorbing bed (12) and the fourth adsorbing bed (14) is heated to release the refrigerant vapor, the refrigerant vapor returns to the condenser (34) through the 5# pipeline (23) and the 3# pipeline (21) and the 6# pipeline (24) and the 3# pipeline (21), releases heat and condenses into liquid, and finally enters the liquid storage tank (35) through the 10# pipeline (28), and then enters the evaporator (33) through the 9# pipeline (27), so that the refrigeration cycle is completed.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The rotary switching adsorption refrigeration device based on the adsorption and desorption process of solid adsorbing medium on refrigerant can rotate and switch the positions of the adsorption area and the regeneration area, realize the conversion of adsorption and desorption functions, change the heating or cooling cooling conditions, and enable the adsorption refrigeration to be continuously performed.

[0017] 2. The rotary switching adsorption refrigeration device utilizes waste heat recovery refrigeration in industrial production, and the adsorption refrigeration utilizes the adsorption effect of solid adsorbing medium such as zeolite and activated carbon on refrigerant such as water and methanol, utilizes the waste heat in industrial production to evaporate the refrigerant liquid to produce a refrigeration effect, and can utilize various low-grade heat sources for driving, thereby greatly improving the energy utilization efficiency.

[0018] 3. The rotary switching adsorption refrigeration device adopts a rotary cutting design, the adsorption and desorption functions can be switched through the rotary inner cylinder (1), and the annular hollow outer shell (2) is fixed, can be provided with a flat bottom and a top, and can be stably stacked together or centrally arranged, so that the storage space can be more effectively utilized, the floor area can be reduced, and the space can be saved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a structural schematic view of the rotary switching adsorption refrigeration device;

[0020] Figure 2 Fig. 2 is a sectional schematic view of the rotary switching adsorption refrigeration device;

[0021] Figure 3 Fig. 3 is a schematic view of the pipeline connection of the rotary switching adsorption refrigeration device. DETAILED DESCRIPTION

[0022] The technical scheme of the present application is not limited to the following specific embodiments, and any reasonable combination of the specific embodiments is also included.

[0023] Specific embodiment one: the rotating wheel switching type adsorption refrigeration device is composed of an inner cylinder (1), an annular hollow outer shell (2), an evaporator (33), a condenser (34) and a liquid storage tank (35);

[0024] The inner cylinder (1) is a hollow cylinder, and four inner cylinder partitions (15) are vertically arranged in the inner cylinder (1), and the inner cylinder partitions (15) divide the inner cylinder (1) into a first adsorption bed (11), a second adsorption bed (12), a third adsorption bed (13) and a fourth adsorption bed (14); a plurality of vertical porous mass transfer pipes (4) are arranged in the first adsorption bed (11), the second adsorption bed (12), the third adsorption bed (13) and the fourth adsorption bed (14) respectively; the bottom of the inner cylinder (1) is sealed, the top of the inner cylinder (1) is sealed by an inner cylinder cover (3), and the upper end of the porous mass transfer pipe (4) is arranged outside the inner cylinder cover (3);

[0025] The annular hollow outer shell (2) is formed by sleeving an inner tube and an outer tube, and the annular cavity formed between the inner tube and the outer tube is sealed at both ends; the inner cylinder (1) is arranged inside the inner tube of the annular hollow outer shell (2), and the gap between the inner cylinder (1) and the inner tube of the annular hollow outer shell (2) is filled with a lubricant (16); four vertical night partitions (36) are arranged between the outer wall of the inner cylinder (1) and the inner tube of the annular hollow outer shell (2), the night partitions (36) are arranged correspondingly to the inner cylinder partitions (15), and four vertical annular cavity partitions (17) are arranged in the annular cavity of the annular hollow outer shell (2) at positions corresponding to the inner cylinder partitions (15), and the four annular cavity partitions (17) divide the annular cavity into a first heat exchange cavity (7), a second heat exchange cavity (8), a third heat exchange cavity (9) and a fourth heat exchange cavity (10);

[0026] The lower part of the first heat exchange cavity (7) is provided with a cooling water inlet, and the upper part of the first heat exchange cavity (7) is provided with a cooling water outlet; the lower part of the third heat exchange cavity (9) is provided with a cooling water inlet, and the upper part of the third heat exchange cavity (9) is provided with a cooling water outlet; the lower part of the second heat exchange cavity (8) is provided with a heat medium inlet, and the upper part of the second heat exchange cavity (8) is provided with a heat medium outlet; the lower part of the fourth heat exchange cavity (10) is provided with a heat medium inlet, and the upper part of the fourth heat exchange cavity (10) is provided with a heat medium outlet; valves are arranged on the 1# pipeline (19), the 2# pipeline (20), the 3# pipeline (21) and the 4# pipeline (22);

[0027] The steam or hot water as heat medium enters the second heat exchange cavity (8) and the fourth heat exchange cavity (10) through the heat medium inlet arranged at the lower part of the second heat exchange cavity (8) and the heat medium inlet arranged at the lower part of the fourth heat exchange cavity (10), and the heat is transferred to the adsorbent in the second adsorption bed (12) and the fourth adsorption bed (14), so that the temperature and pressure of the second adsorption bed (12) and the fourth adsorption bed (14) increase until the saturation pressure at the refrigerant condensing temperature is reached, and the adsorption bed starts to release the adsorbed refrigerant vapor, and the desorbed refrigerant vapor is then discharged through the porous mass transfer pipe (4) and transported into the condenser (34) and cooled and condensed into a liquid state for reuse in the subsequent evaporation process, so as to realize the regeneration of the refrigerant; at the same time, the high-temperature and high-pressure refrigerant gas discharged from the evaporator (33) enters the first adsorption bed (11) and the third adsorption bed (13), and the refrigerant gas molecules start to contact the surface of the adsorbent; as the refrigerant gas molecules interact with the surface of the adsorbent (physical adsorption or chemical adsorption), the refrigerant molecules start to be adsorbed into the pores of the adsorbent. During the adsorption process, the refrigerant gas molecules release a certain amount of heat at the surface of the adsorbent, and since the adsorption is an exothermic process, the temperature of the first adsorption bed (11) and the third adsorption bed (13) will usually rise, at which time the cooling water enters the first heat exchange cavity (7) and the third heat exchange cavity (9) through the cooling water inlet arranged at the lower part of the first heat exchange cavity (7) and the cooling water inlet arranged at the lower part of the third heat exchange cavity (9), and the cold heat is transferred to the adsorbent in the first adsorption bed (11) and the third adsorption bed (13), so that the temperature of the first adsorption bed (11) and the third adsorption bed (13) decreases, and the heat released by the adsorbent is taken away by the cooling device, and the adsorption process can continue; finally, the inner cylinder (1) is rotated by 90°, and the functions of the first adsorption bed (11), the second adsorption bed (12), the third adsorption bed (13) and the fourth adsorption bed (14) are changed.

[0028] The refrigerant outlet of the evaporator (33) is connected with the 1# pipeline (19) and the 2# pipeline (20), the outlet of the 2# pipeline (20) is connected with the 4# pipeline (22), the refrigerant inlet of the evaporator (33) is connected with the refrigerant outlet of the liquid storage tank (35) through the 9# pipeline (27), the refrigerant inlet of the liquid storage tank (35) is connected with the refrigerant outlet of the condenser (34) through the 10# pipeline (28), the refrigerant inlet of the condenser (34) is connected with the 3# pipeline (21) and the 4# pipeline (22), the inlet of the 3# pipeline (21) is connected with the 1# pipeline (19); the porous mass transfer pipe (4) in the first adsorption bed (11) is connected with one end of the 5# pipeline (23), the porous mass transfer pipe (4) in the third adsorption bed (13) is connected with one end of the 6# pipeline (24), the other end of the 5# pipeline (23), the other end of the 6# pipeline (24) and the outlet end of the 1# pipeline (19) are respectively connected with three interfaces of the 1# three-way regulating valve (29); the porous mass transfer pipe (4) in the second adsorption bed (12) is connected with one end of the 8# pipeline (26), the porous mass transfer pipe (4) in the fourth adsorption bed (14) is connected with one end of the 7# pipeline (25), the other end of the 8# pipeline (26), the other end of the 7# pipeline (25) and the outlet end of the 4# pipeline (22) are respectively connected with three interfaces of the 2# three-way regulating valve (30);

[0029] The inner cylinder (1) is provided with a rotating shaft (5) in the center; the rotating shaft (5) is connected with a driving device;

[0030] 1. The rotary switching adsorption refrigeration device of the embodiment is based on the adsorption and desorption process of solid adsorption medium on refrigerant, can rotate to switch the positions of adsorption area and regeneration area, realize the conversion of adsorption and desorption functions, change the heating or cooling cooling conditions, and make the adsorption refrigeration continuous.

[0031] 2. The rotary switching adsorption refrigeration device of the embodiment utilizes waste heat recovery refrigeration in industrial production, and the adsorption refrigeration utilizes the adsorption of solid adsorption medium such as zeolite and activated carbon on refrigerant such as water and methanol, utilizes the waste heat in industrial production to make the refrigerant liquid evaporate to produce refrigeration effect, and can utilize various low-grade heat sources for driving, greatly improving energy utilization efficiency.

[0032] 3. The embodiment adopts rotary cutting design, can realize the switching of adsorption and desorption functions by rotating the inner cylinder (1), and the annular hollow outer shell (2) is fixed, can be provided with flat bottom and top to be stably stacked together or centrally arranged, so that the storage space can be more effectively utilized, the floor area can be reduced, and space can be saved.

[0033] Specific implementation two: the difference between this embodiment and specific implementation one is that: the first adsorption bed (11), the second adsorption bed (12), the third adsorption bed (13) and the fourth adsorption bed (14) are filled with adsorption medium; the adsorption medium is activated carbon or zeolite.

[0034] Specific implementation three: the difference between this embodiment and specific implementation one or two is that: the inner tube of the annular cavity of the annular hollow outer shell (2) is provided with fins (18) on the tube wall.

[0035] Specific implementation four: the difference between this embodiment and one of specific implementation one to three is that: the outer tube of the annular hollow outer shell (2) is coated with a heat preservation layer (6) outside.

[0036] Specific implementation five: the difference between this embodiment and one of specific implementation one to four is that: one side of the night separation strip (36) is in close contact with the outer wall of the inner cylinder (1), and the other side of the night separation strip (36) is tightly connected with the inner tube of the annular hollow outer shell (2).

[0037] Specific implementation six: the difference between this embodiment and one of specific implementation one to five is that: the 9# pipeline (27) is provided with a 1# throttle valve (31), and the 10# pipeline (28) is provided with a 2# throttle valve (32).

Claims

1. A rotary switch adsorption refrigeration device, characterized by: The rotary switch adsorption refrigeration device is composed of an inner cylinder (1), an annular hollow outer shell (2), an evaporator (33), a condenser (34) and a liquid storage tank (35); The inner cylinder (1) is a hollow cylinder, and four inner cylinder partitions (15) are vertically arranged in the inner cylinder (1), which divide the inner cylinder (1) into a first adsorption bed (11), a second adsorption bed (12), a third adsorption bed (13) and a fourth adsorption bed (14); a plurality of vertical porous mass transfer pipes (4) are arranged in the first adsorption bed (11), the second adsorption bed (12), the third adsorption bed (13) and the fourth adsorption bed (14) respectively; the bottom of the inner cylinder (1) is sealed, the top of the inner cylinder (1) is sealed by an inner cylinder cover (3), and the upper end of the porous mass transfer pipe (4) is arranged outside the inner cylinder cover (3); The annular hollow outer shell (2) is formed by sleeving an inner tube and an outer tube, and the annular cavity formed between the inner tube and the outer tube is sealed at both ends; the inner cylinder (1) is arranged inside the inner tube of the annular hollow outer shell (2), and the gap between the inner cylinder (1) and the inner tube of the annular hollow outer shell (2) is filled with a lubricant (16); four vertical night partitions (36) are arranged between the outer wall of the inner cylinder (1) and the inner tube of the annular hollow outer shell (2), and the night partitions (36) are arranged correspondingly to the inner cylinder partitions (15); four vertical annular cavity partitions (17) are arranged in the annular cavity of the annular hollow outer shell (2) at positions corresponding to the inner cylinder partitions (15), and the four annular cavity partitions (17) divide the annular cavity into a first heat exchange cavity (7), a second heat exchange cavity (8), a third heat exchange cavity (9) and a fourth heat exchange cavity (10); The lower part of the first heat exchange cavity (7) is provided with a cooling water inlet, and the upper part of the first heat exchange cavity (7) is provided with a cooling water outlet; the lower part of the third heat exchange cavity (9) is provided with a cooling water inlet, and the upper part of the third heat exchange cavity (9) is provided with a cooling water outlet; the lower part of the second heat exchange cavity (8) is provided with a heat medium inlet, and the upper part of the second heat exchange cavity (8) is provided with a heat medium outlet; the lower part of the fourth heat exchange cavity (10) is provided with a heat medium inlet, and the upper part of the fourth heat exchange cavity (10) is provided with a heat medium outlet; valves are arranged on the 1# pipeline (19), the 2# pipeline (20), the 3# pipeline (21) and the 4# pipeline (22). The refrigerant outlet of the evaporator (33) is connected to pipe #1 (19) and pipe #2 (20). The outlet of pipe #2 (20) is connected to pipe #4 (22). The refrigerant inlet of the evaporator (33) is connected to the refrigerant outlet of the liquid receiver (35) via pipe #9 (27). The refrigerant inlet of the liquid receiver (35) is connected to the refrigerant outlet of the condenser (34) via pipe #10 (28). The refrigerant inlet of the condenser (34) is connected to pipe #3 (21) and pipe #4 (22). The inlet of pipe #3 (21) is connected to pipe #1 (19). The porous mass transfer tube (4) in the first adsorption bed (11) is connected to pipe #5 (23). At one end, the porous mass transfer tube (4) in the third adsorption bed (13) is connected to one end of the 6# pipeline (24), the other end of the 5# pipeline (23), the other end of the 6# pipeline (24) and the outlet end of the 1# pipeline (19) are respectively connected to the three ports of the 1# three-way regulating valve (29); the porous mass transfer tube (4) in the second adsorption bed (12) is connected to one end of the 8# pipeline (26), the porous mass transfer tube (4) in the fourth adsorption bed (14) is connected to one end of the 7# pipeline (25), the other end of the 8# pipeline (26), the other end of the 7# pipeline (25) and the outlet end of the 4# pipeline (22) are respectively connected to the three ports of the 2# three-way regulating valve (30); A rotating shaft (5) is provided at the center of the inner cylinder (1); the rotating shaft (5) is connected to a drive device.

2. The rotary switch adsorption refrigeration device according to claim 1, characterized in that: The first adsorption bed (11), the second adsorption bed (12), the third adsorption bed (13) and the fourth adsorption bed (14) are filled with adsorption media; the adsorption media are activated carbon or zeolite.

3. The rotary switch adsorption refrigeration device according to claim 1, characterized in that: The inner tube of the annular cavity of the annular hollow outer shell (2) is provided with fins (18).

4. The rotary switch adsorption refrigeration device according to claim 1, characterized in that: The outer tube of the annular hollow shell (2) is covered with a heat insulation layer (6).

5. The rotary switch adsorption refrigeration device according to claim 1, characterized in that: One side of the overnight strip (36) is in close contact with the outer wall of the inner cylinder (1), and the other side of the overnight strip (36) is tightly connected to the inner tube of the annular hollow outer shell (2).

6. The rotary switch adsorption refrigeration device according to claim 1, characterized in that: A throttle valve (31) is installed on the 9# pipeline (27), and a throttle valve (32) is installed on the 10# pipeline (28).

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