Heating inner tube absorption refrigerating unit

Abstract

This invention discloses a heated inner tube absorption chiller, relating to the field of chiller technology. It includes a generator, condenser, evaporator, absorber, liquid receiver, and filter unit. The generator consists of an inner tube and a sleeve, with the sleeve fitted over the outer wall of the inner tube. An inlet pipe is fixedly connected to the bottom end of the inner tube and is connected to the liquid receiver. A solution pump is installed on the outer wall of the inlet pipe. A heating tube extending into the inner tube is installed on the outer wall of the inner tube. The inlet pipe is filtered by a filtration mechanism, and a flow meter is installed at the top end of the inlet pipe. This invention directly heats the refrigerant in the generator's inner tube by inserting the heating tube into it, resulting in faster system start-up, increased cooling capacity, and approximately 70% energy savings compared to previous methods that heated the outer tube.

Description

Technical Field

[0001] This invention relates to the field of refrigeration unit technology, specifically to a heated inner tube absorption refrigeration unit. Background Technology

[0002] A refrigeration unit is an integrated system that provides cooling capacity to industrial or commercial equipment through a refrigeration cycle. Its core function is to transfer heat away from the target environment to achieve cooling or temperature control. It mainly consists of four major components: compressor, condenser, evaporator (air cooler), and expansion valve, supplemented by components such as oil separator, liquid receiver, and solenoid valve. The system completes refrigeration through a cycle of compression → condensation → expansion → evaporation.

[0003] However, during the operation of the refrigeration unit, the heating tube heats the outer tube, which is filled with a circulating heating medium. The heated circulating heating medium then heats the refrigerant in the inner tube of the generator. This results in a slow system start-up speed and a waste of heat. Furthermore, after prolonged use, calcium and magnesium ions introduced from the solution in the circulating pipe combine with carbonate ions and precipitate on the heating surface. In addition, ammonium ions and dissolved oxygen in the solution can cause metal corrosion. The accumulation of corrosion products and impurity particles can easily cause blockage in the circulating pipe. Therefore, in order to improve the system start-up speed and remove suspended corrosion products and impurity particles, a heated inner tube absorption refrigeration unit is provided. Summary of the Invention

[0004] The purpose of this invention is to provide a heated inner tube absorption chiller unit in order to improve system startup speed and remove suspended corrosion products and impurity particles.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heated inner tube absorption refrigeration unit, comprising a generator, a condenser, an evaporator, an absorber, a liquid storage tank, and a filtration unit. The generator consists of an inner tube and a sleeve, the sleeve being fitted onto the outer wall of the inner tube. An inlet pipe is fixedly connected to the bottom end of the inner tube and is connected to the liquid storage tank. A solution pump is installed on the outer wall of the inlet pipe. A heating tube extending into the inner tube is installed on the outer wall of the inner tube. The inlet pipe is filtered by a filtration mechanism. A flow meter is installed at the top end of the inlet pipe. The filtration mechanism includes a C-shaped frame, which is fixedly connected to the outer wall of the inlet pipe. A mounting base is provided below the C-shaped frame. A motor is installed on the outer wall of the mounting base. The output end of the motor is connected to a rotating disk, which is located on the inner wall of the C-shaped frame. Three mounting holes are provided on the outer wall of the rotating disk, and filter elements are installed on the inner walls of the mounting holes.

[0006] As a further embodiment of the present invention: the filtration mechanism further includes a positioning block and a locking block, the positioning block and the locking block being slidably connected to the interior of the rotating disk, the positioning block and the locking block extending into the inner cavity of the mounting hole and located at both ends of the filter element, a first spring connecting the positioning block and the rotating disk, a spur gear being rotatably connected to the interior of the rotating disk located on the outer wall of the positioning block, a pressing block being slidably connected to the interior of the rotating disk located on the outer wall of the spur gear, the pressing block extending to the outer wall of the rotating disk, a second spring connecting the locking block and the rotating disk, an electric push rod being mounted on the outer wall of the mounting base away from the motor, a connecting frame being connected to the output end of the electric push rod, a first push rod and a second push rod being fixedly connected to the outer wall of the connecting frame, an arc-shaped frame being fixedly connected to one side of the mounting base, a collection box being provided on one side of the mounting base at one end of the arc-shaped frame, a sealing mechanism being used to seal the C-shaped frame and the rotating disk, and a new filter element being replenished via a moving mechanism.

[0007] As a further embodiment of the present invention: the sealing mechanism includes a displacement frame, the displacement frame is fixedly connected to the top of the connecting frame, a displacement block extending out of the C-shaped frame is slidably connected inside the C-shaped frame, a connecting airbag is installed inside the C-shaped frame at one end of the displacement block, sealing airbags are symmetrically installed on the inner wall of the C-shaped frame, the connecting airbag and the sealing airbag are connected by a connecting pipe, and a return spring is installed inside the connecting airbag.

[0008] As a further embodiment of the present invention: the moving mechanism includes a placement box, which is fixedly connected to the bottom of the inner wall of the mounting base. The outer wall of the placement box has an insertion hole located at one end of the inner wall of the placement box. A push plate is slidably connected to the inner wall of the placement box. A third spring is connected between the push plate and the placement box. A rotating cover is rotatably connected to the top of the placement box. A fixing block extending from the rotating cover is slidably connected inside the rotating cover. A fourth spring is connected between the fixing block and the rotating cover. A fixing groove for the fixing block to be inserted is provided on the outer wall of the placement box.

[0009] As a further embodiment of the present invention: the outer wall of the arc-shaped frame is in contact with the outer wall of the rotating disk, and the end of the extrusion block extending out of the rotating disk is provided with an arc-shaped surface.

[0010] As a further embodiment of the present invention: the outer walls of both the positioning block and the extrusion block are provided with toothed grooves, which mesh with the spur gear.

[0011] As a further embodiment of the present invention: the end of the card block extending into the inner cavity of the mounting hole is provided with an inclined surface, and the outer wall of the filter element is in contact with the inner wall of the mounting hole.

[0012] As a further embodiment of the present invention: the outer wall of the first push rod is in contact with the inner wall of the mounting hole, the outer wall of the second push rod is in contact with the inner wall of the insertion hole, and the outer wall of the filter element is in contact with the inner wall of the insertion hole.

[0013] As a further embodiment of the present invention: the outer wall of the pusher plate is in contact with the inner wall of the placement box, and the outer wall of the filter element is in contact with the inner wall of the placement box.

[0014] As a further embodiment of the present invention: the fixing block is L-shaped, and the outer wall of one end of the fixing block is in contact with the inner wall of the fixing groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By inserting the heating element into the inner tube, the refrigerant in the generator's inner tube is directly heated, which speeds up the system startup, increases the cooling capacity, and saves about 70% more energy than the previous method of heating the outer tube.

[0016] 2. By setting up a filtration mechanism, when the liquid flows through the inlet pipe, it passes through the mounting holes, and the filter element filters the liquid. When the filter element becomes clogged, the motor drives the rotating disk to rotate, causing the three mounting holes to shift. After the rotating disk rotates 120 degrees, the new filter element is located between the C-shaped brackets. Then, the electric push rod drives the connecting frame to shift, and the shift of the connecting frame drives the first push rod and the second push rod to shift synchronously. The shift of the first push rod pushes the old filter element out of the mounting hole and into the collection box for collection. The shift of the second push rod pushes the new filter element into the mounting hole, which facilitates the filtration of the circulation pipeline, continuously removing suspended corrosion products and impurity particles, and automatically replacing the filter element when it becomes clogged. Attached Figure Description

[0017] Figure 1 This is a flowchart of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the generator of the present invention; Figure 4 This is a schematic diagram of the mounting base of the present invention; Figure 5 This is a schematic diagram of the rotating disk of the present invention; Figure 6 This is a schematic diagram of the installation of the filter element of the present invention; Figure 7 This is a cross-sectional view of the filter element of the present invention; Figure 8 This is a cross-sectional view of the C-shaped frame of the present invention; Figure 9 This is a schematic diagram of the installation of the push plate of the present invention; Figure 10 This is a cross-sectional view of the placement box of the present invention.

[0018] In the diagram: 1. Inner tube; 2. Sleeve; 3. Heating tube; 4. Liquid inlet tube; 5. Filtration mechanism; 501. C-shaped frame; 502. Mounting base; 503. Motor; 504. Rotating disk; 505. Mounting hole; 506. Filter element; 507. Positioning block; 508. First spring; 509. Spur gear; 510. Pressing block; 511. Locking block; 512. Second spring; 513. Arc-shaped frame; 514. Collection box; 515. Electric push rod; 516. Connecting frame; 517. First push rod; 518. Second push rod; 6. Sealing mechanism; 601. Displacement frame; 602. Displacement block; 603. Connecting airbag; 604. Connecting pipe; 605. Sealing airbag; 7. Moving mechanism; 701. Placement box; 702. Insertion hole; 703. Push plate; 704. Third spring; 705. Rotating cover; 706. Fixing block; 707. Fourth spring; 708. Fixing groove; 8. Flow meter. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0021] Please see Figures 1 to 10 In this embodiment of the invention, the heating inner tube absorption refrigeration unit includes a generator, a condenser, an evaporator, an absorber, a liquid storage tank, and a filtration unit. The generator consists of an inner tube 1 and a sleeve 2. The sleeve 2 is sleeved on the outer wall of the inner tube 1. The bottom end of the inner tube 1 is fixedly connected to an inlet pipe 4, which is connected to the liquid storage tank. A solution pump is installed on the outer wall of the inlet pipe 4. A heating pipe 3 extending into the inner tube 1 is installed on the outer wall of the inner tube 1. The inlet pipe 4 is filtered by a filtration mechanism 5. A flow meter 8 is installed at the top end of the inlet pipe 4.

[0022] In this embodiment: the absorbent-refrigerant solution (ammonia-aqueous solution) inside the generator is heated by an electric heating tube. The low-boiling-point refrigerant (such as ammonia or water vapor) evaporates upon heating, forming high-pressure vapor. The remaining absorbent (high-boiling-point) and a small amount of refrigerant flow to the absorber. The refrigerant vapor enters the condenser, is cooled by external air or water, and condenses into liquid, releasing heat to the outside. The liquid refrigerant enters the evaporator after being depressurized by a throttling device. The low-pressure liquid refrigerant absorbs heat from the cooled space in the evaporator, evaporating into low-pressure vapor to achieve a cooling effect. The high-boiling-point absorbent solution flowing out of the generator enters the absorber after being depressurized by a throttling device. At the same time, the low-pressure refrigerant vapor from the evaporator also enters the absorber. The absorbent absorbs the refrigerant vapor, reforming the solution to the initial concentration. The solution flows into the storage tank and is then pumped back to the generator to complete the cycle. Directly heating the refrigerant in the inner tube 1 of the generator achieves 70% energy savings, accelerates system start-up, and increases cooling capacity. It saves 70% more energy than the previous method of heating the outer tube, and the sleeve 2 is used to keep the inner tube 1 warm.

[0023] Please refer to this carefully. Figures 4 to 7The filtration mechanism 5 includes a C-shaped frame 501, which is fixedly connected to the outer wall of the inlet pipe 4. A mounting base 502 is located below the C-shaped frame 501. A motor 503 is mounted on the outer wall of the mounting base 502. The output end of the motor 503 is connected to a rotating disk 504, which is located on the inner wall of the C-shaped frame 501. Three mounting holes 505 are formed on the outer wall of the rotating disk 504. Filter elements 506 are mounted on the inner walls of the mounting holes 505. The filtration mechanism 5 also includes a positioning block 507 and a locking block 511, which are slidably connected to the interior of the rotating disk 504. The positioning block 507 and the locking block 511 extend into the inner cavity of the mounting holes 505 and are located at both ends of the filter element 506. A first spring 508 connects the positioning block 507 to the rotating disk 504. The interior of the rotating disk 504 is located within the positioning block. A spur gear 509 is rotatably connected to the outer wall of the 507. A pressing block 510 is slidably connected to the inner wall of the rotating disk 504 on the outer wall of the spur gear 509. The pressing block 510 extends to the outer wall of the rotating disk 504. A second spring 512 is connected between the locking block 511 and the rotating disk 504. An electric push rod 515 is installed on the outer wall of the mounting base 502 at the end away from the motor 503. A connecting frame 516 is connected to the output end of the electric push rod 515. A first push rod 517 and a second push rod 518 are fixedly connected to the outer wall of the connecting frame 516. An arc-shaped frame 513 is fixedly connected to one side of the mounting base 502. A collection box 514 is provided on one side of the mounting base 502 at one end of the arc-shaped frame 513. The C-shaped frame 501 and the rotating disk 504 are sealed by a sealing mechanism 6. A new filter element 506 is replenished by a moving mechanism 7.

[0024] In this embodiment: the filter element 506 is installed in the mounting hole 505, and the positioning block 507 and the locking block 511 are in contact with both ends of the filter element 506 respectively, positioning the filter element 506 in the mounting hole 505; when the liquid flows through the liquid inlet pipe 4, the liquid passes through the mounting hole 505, and the filter element 506 performs a filtration operation on the liquid. During this process, the flow meter 8 detects the flow rate of the liquid in the inlet pipe 4. When the flow rate decreases, it indicates that the filter element 506 is blocked. At this time, the electric push rod 515 rotates, causing the connecting bracket 516 to move forward a short distance, and the first push rod 517 is not in contact with the rotating disk 504. Then, the motor 503 is started, and the motor 503 rotates, causing the rotating disk 504 to rotate, resulting in the displacement of the three mounting holes 505. After the rotating disk 504 rotates 120 degrees, the new filter element 506 is located between the C-shaped brackets 501; then the electric push rod 515... 5. The operation drives the connecting frame 516 to move, and the movement of the connecting frame 516 drives the first push rod 517 and the second push rod 518 to move synchronously. The first push rod 517 pushes the old filter element 506 out of the mounting hole 505 and into the collection box 514 for collection. The second push rod 518 pushes the new filter element 506 into the mounting hole 505, which facilitates the filtration operation of the circulation pipeline, continuously removes suspended corrosion products and impurity particles, and automatically replaces the filter element 506 when it becomes clogged. During the rotation of the rotating disk 504, the extrusion block 510 comes into contact with the arc-shaped frame 513. The extrusion block 510 is displaced by the force, and the displacement of the extrusion block 510 drives the spur gear 509 to rotate. The rotation of the spur gear 509 drives the positioning block 507 to move, which compresses the first spring 508. The positioning block 507 moves out of the mounting hole 505, thus facilitating the subsequent pushing of the old filter element 506 out of the mounting hole 505. After the extrusion block 510 separates from the arc-shaped frame 513, the positioning block... 507 is displaced into the mounting hole 505 by the elastic force of the first spring 508. At this time, the new filter element 506 can be pushed into the mounting hole 505. The filter element 506 contacts the locking block 511, pushing the locking block 511 to move and squeezing the second spring 512 until the filter element 506 contacts the positioning block 507. The locking block 511 is reset by the elastic force of the second spring 512. The positioning block 507 and the locking block 511 together position the filter element 506 in the mounting hole 505.

[0025] Please refer to this carefully. Figure 8 The sealing mechanism 6 includes a displacement frame 601, which is fixedly connected to the top of the connecting frame 516. A displacement block 602 extending out of the C-shaped frame 501 is slidably connected inside the C-shaped frame 501. A connecting airbag 603 is installed inside the C-shaped frame 501 at one end of the displacement block 602. Sealing airbags 605 are symmetrically installed on the inner wall of the C-shaped frame 501. The connecting airbag 603 and the sealing airbag 605 are connected by a connecting pipe 604. A return spring is installed inside the connecting airbag 603.

[0026] In this embodiment: when the connecting frame 516 moves away from the mounting base 502, the displacement of the connecting frame 516 drives the displacement frame 601 to move as well. The displacement frame 601 contacts the displacement block 602, pushing the displacement block 602 to move and compressing the connecting airbag 603. The air inside the connecting airbag 603 enters the sealing airbag 605 through the connecting pipe 604. The sealing airbag 605 expands and compresses the rotating disk 504, thereby improving the sealing between the C-shaped frame 501 and the rotating disk 504 and preventing leakage. When the filter element 506 is replaced, the connecting frame 516 moves one end, causing the displacement frame 601 to separate from the displacement block 602. The connecting airbag 603 is reset by the action of the internal return spring, causing the sealing airbag 605 to contract, thereby avoiding obstruction of the rotation of the rotating disk 504.

[0027] Please refer to this carefully. Figures 9 to 10 The moving mechanism 7 includes a placement box 701, which is fixedly connected to the bottom of the inner wall of the mounting base 502. The outer wall of the placement box 701 has an insertion hole 702 located at one end of the inner wall of the placement box 701. A push plate 703 is slidably connected to the inner wall of the placement box 701. A third spring 704 is connected between the push plate 703 and the placement box 701. A rotating cover 705 is rotatably connected to the top of the placement box 701. A fixing block 706 extending from the rotating cover 705 is slidably connected inside the rotating cover 705. A fourth spring 707 is connected between the fixing block 706 and the rotating cover 705. A fixing groove 708 for the fixing block 706 to be inserted is provided on the outer wall of the placement box 701.

[0028] In this embodiment: the fixed block 706 is pushed to move, compressing the fourth spring 707; the rotating cover 705 is rotated to open the placement box 701; the push plate 703 is pushed to slide within the placement box 701, compressing the third spring 704; the filter element 506 is neatly placed into the inner wall of the placement box 701; the rotating cover 705 is rotated to close the placement box 701; the fixed block 706 is engaged in the fixing groove 708 by the elastic force of the fourth spring 707, fixing the rotating cover 705; during the displacement of the second push rod 518, the second push rod 518 moves into the insertion hole 702, pushing the new filter element 506 into the mounting hole 505; when the second push rod 518 moves out of the insertion hole 702, the push plate 703 is displaced by the elastic force of the third spring 704, and the push plate 703 pushes the new filter element 506 into the insertion hole 702 again, thus facilitating the next replacement operation.

[0029] Please refer to this carefully. Figures 4 to 7 The outer wall of the arc-shaped frame 513 is in contact with the outer wall of the rotating disk 504, and the end of the extrusion block 510 extending out of the rotating disk 504 is provided with an arc-shaped surface.

[0030] In this embodiment: during the rotation of the rotating disk 504, the extrusion block 510 comes into contact with the arc frame 513, and the extrusion block 510 is displaced by the force.

[0031] Please refer to this carefully. Figures 4 to 7 The outer walls of both the positioning block 507 and the pressing block 510 are provided with toothed grooves, which mesh with the spur gear 509.

[0032] In this embodiment: the displacement of the compression block 510 causes the spur gear 509 to rotate, and the rotation of the spur gear 509 causes the positioning block 507 to move, thereby compressing the first spring 508.

[0033] Please refer to this carefully. Figures 4 to 7 The end of the card block 511 extending into the inner cavity of the mounting hole 505 is provided with a bevel, and the outer wall of the filter element 506 fits against the inner wall of the mounting hole 505.

[0034] In this embodiment: the new filter element 506 is pushed into the mounting hole 505, the filter element 506 contacts the locking block 511, and pushes the locking block 511 to move, which squeezes the second spring 512 until the filter element 506 contacts the positioning block 507. The locking block 511 is reset by the elastic force of the second spring 512. The positioning block 507 and the locking block 511 together position the filter element 506 in the mounting hole 505.

[0035] Please refer to this carefully. Figures 9 to 10 The outer wall of the first push rod 517 is in contact with the inner wall of the mounting hole 505, the outer wall of the second push rod 518 is in contact with the inner wall of the insertion hole 702, and the outer wall of the filter element 506 is in contact with the inner wall of the insertion hole 702.

[0036] In this embodiment: During the displacement of the second push rod 518, the second push rod 518 moves into the insertion hole 702, pushing the new filter element 506 into the mounting hole 505. When the second push rod 518 is displaced out of the insertion hole 702, the push plate 703 is displaced by the elastic force of the third spring 704, and the push plate 703 pushes the new filter element 506 into the insertion hole 702 again.

[0037] Please refer to this carefully. Figures 9 to 10 The outer wall of the push plate 703 is in contact with the inner wall of the placement box 701, and the outer wall of the filter element 506 is in contact with the inner wall of the placement box 701.

[0038] In this embodiment: the push plate 703 is pushed to slide inside the placement box 701, which compresses the third spring 704 and neatly arranges the filter element 506 into the inner wall of the placement box 701.

[0039] Please refer to this carefully. Figures 9 to 10The fixing block 706 is L-shaped, and the outer wall of one end of the fixing block 706 is in contact with the inner wall of the fixing groove 708.

[0040] In this embodiment: rotating the rotating cover 705 closes the placement box 701, and the fixing block 706 is engaged into the fixing groove 708 by the elastic force of the fourth spring 707, thus fixing the rotating cover 705.

[0041] Energy-saving experiment: Using the same ammonia-water absorption chiller unit, both a traditional external pipe heating generator module and the internal pipe heating generator module of this invention were installed and compared under the same operating conditions. The test conditions were: cooling water temperature 32℃, chilled water inlet temperature 12℃, outlet temperature 7℃, and ambient temperature 35℃. After the system stabilized, the heating power and the temperature difference between the chilled water inlet and outlet were recorded continuously for 120 minutes. The cooling capacity was calculated using the cooling capacity calculation formula.

[0042] Calculate the energy efficiency ratio using the formula:

[0043] Each test was repeated 3 times, the average value was taken, and then the energy saving rate was calculated.

[0044] Table 1: Test data of external tube heating generator (control group)

[0045] Table 2: Test data of the inner tube heating generator (experimental group)

[0046] Table 3: Summary of Energy Saving Rates

[0047] Test results show that, under the condition of achieving the same cooling capacity (approximately 11.8 kW), the average input power of the traditional external pipe heating method is 18.23 kW, with an EER of approximately 0.65; while the average input power of the internal pipe heating method of this invention is 5.40 kW, with an EER of approximately 2.18. Compared to the traditional external pipe heating method, this invention saves approximately 70.4% of energy, and the time for the unit to reach a stable cooling state after startup is shortened from approximately 15 minutes to approximately 5 minutes, significantly improving the system startup speed.

[0048] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heated inner tube absorption chiller unit, characterized in that, The system includes a generator, a condenser, an evaporator, an absorber, a storage tank, and a filtration unit. The generator consists of an inner tube (1) and a sleeve (2). The sleeve (2) is fitted onto the outer wall of the inner tube (1). An inlet pipe (4) is fixedly connected to the bottom end of the inner tube (1). The inlet pipe (4) is connected to the storage tank. A solution pump is installed on the outer wall of the inlet pipe (4). A heating tube (3) extending into the inner tube (1) is installed on the outer wall of the inner tube (1). The inlet pipe (4) performs filtration through a filtration mechanism (5). A flow meter is installed at the top end of the inlet pipe (4). 8) The filtration mechanism (5) includes a C-shaped frame (501), which is fixedly connected to the outer wall of the liquid inlet pipe (4). A mounting base (502) is provided below the C-shaped frame (501). A motor (503) is installed on the outer wall of the mounting base (502). The output end of the motor (503) is connected to a rotating disk (504). The rotating disk (504) is located on the inner wall of the C-shaped frame (501). Three mounting holes (505) are opened on the outer wall of the rotating disk (504). A filter element (506) is installed on the inner wall of the mounting holes (505).

2. The heating inner tube absorption chiller unit according to claim 1, characterized in that, The filtration mechanism (5) further includes a positioning block (507) and a locking block (511). The positioning block (507) and the locking block (511) are slidably connected to the interior of the rotating disk (504). The positioning block (507) and the locking block (511) extend into the inner cavity of the mounting hole (505) and are located at both ends of the filter element (506). A first spring (508) is connected between the positioning block (507) and the rotating disk (504). A spur gear (509) is rotatably connected to the interior of the rotating disk (504) on the outer wall of the positioning block (507). A pressing block (510) is slidably connected to the interior of the rotating disk (504) on the outer wall of the spur gear (509). The pressing block (510) extends to the outer wall of the rotating disk (504). A second spring (512) is connected between the card block (511) and the rotating disk (504). An electric push rod (515) is installed on the outer wall of the mounting base (502) away from the motor (503). The output end of the electric push rod (515) is connected to a connecting frame (516). A first push rod (517) and a second push rod (518) are fixedly connected to the outer wall of the connecting frame (516). An arc frame (513) is fixedly connected to one side of the mounting base (502). A collection box (514) is provided on one side of the mounting base (502) at one end of the arc frame (513). The C-shaped frame (501) and the rotating disk (504) are sealed by a sealing mechanism (6). A new filter element (506) is replenished by a moving mechanism (7).

3. The heating inner tube absorption chiller unit according to claim 2, characterized in that, The sealing mechanism (6) includes a displacement frame (601), which is fixedly connected to the top of the connecting frame (516). A displacement block (602) extending out of the C-shaped frame (501) is slidably connected inside the C-shaped frame (501). A connecting airbag (603) is installed inside the C-shaped frame (501) at one end of the displacement block (602). Sealing airbags (605) are symmetrically installed on the inner wall of the C-shaped frame (501). The connecting airbag (603) and the sealing airbag (605) are connected by a connecting pipe (604). A return spring is installed inside the connecting airbag (603).

4. The heating inner tube absorption chiller unit according to claim 3, characterized in that, The moving mechanism (7) includes a placement box (701), which is fixedly connected to the bottom of the inner wall of the mounting base (502). The outer wall of the placement box (701) is provided with an insertion hole (702), which is located at one end of the inner wall of the placement box (701). A push plate (703) is slidably connected to the inner wall of the placement box (701). A third spring (704) is connected between the push plate (703) and the placement box (701). A rotating cover (705) is rotatably connected to the top of the placement box (701). A fixing block (706) extending from the rotating cover (705) is slidably connected inside the rotating cover (705). A fourth spring (707) is connected between the fixing block (706) and the rotating cover (705). A fixing groove (708) for the fixing block (706) to be inserted is provided on the outer wall of the placement box (701).

5. The heating inner tube absorption chiller unit according to claim 2, characterized in that, The outer wall of the arc-shaped frame (513) is in contact with the outer wall of the rotating disk (504), and the end of the extrusion block (510) extending out of the rotating disk (504) is provided with an arc-shaped surface.

6. The heating inner tube absorption chiller unit according to claim 2, characterized in that, The outer walls of the positioning block (507) and the extrusion block (510) are provided with toothed grooves, which mesh with the spur gear (509).

7. The heating inner tube absorption chiller unit according to claim 2, characterized in that, The end of the card block (511) extending into the inner cavity of the mounting hole (505) is provided with an inclined surface, and the outer wall of the filter element (506) is in contact with the inner wall of the mounting hole (505).

8. The heating inner tube absorption chiller unit according to claim 4, characterized in that, The outer wall of the first push rod (517) is in contact with the inner wall of the mounting hole (505), the outer wall of the second push rod (518) is in contact with the inner wall of the insertion hole (702), and the outer wall of the filter element (506) is in contact with the inner wall of the insertion hole (702).

9. The heating inner tube absorption chiller unit according to claim 4, characterized in that, The outer wall of the push plate (703) is in contact with the inner wall of the placement box (701), and the outer wall of the filter element (506) is in contact with the inner wall of the placement box (701).

10. The heating inner tube absorption chiller unit according to claim 4, characterized in that, The fixing block (706) is L-shaped, and the outer wall of one end of the fixing block (706) is in contact with the inner wall of the fixing groove (708).

Images