A finned heat exchanger

Abstract

The present invention belongs to the technical field of refrigerators, and specifically relates to a fin-type heat exchanger, which comprises a base frame, a base tube assembly is installed in the base frame, circular fins are installed on the base tube assembly, the base tube assembly comprises a straight tube and a bent tube, the straight tube and the bent tube are connected by a bellows, a transverse plate is installed in the base frame, and the transverse plate fixes the bent tube; a cylinder is installed on the base frame, the cylinder output end is connected to a dredging assembly, the dredging assembly is connected to a pull block, a rotating shaft is rotatably installed on the pull block, the rotating shaft is connected to a sleeve through a connecting rod, and the sleeve is installed on the straight tube; the dredging assembly and the pull block are driven to move synchronously by the cylinder, the pull block lifts the straight tube through the connecting rod, and under the action of the bellows, the curvature between the straight tube and the bent tube gradually increases, the slope between the bent tube and the straight tube is increased, the efficiency of dust and other debris passing through the bent tube is improved, and the probability of blockage of the base tube assembly is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigerators, and in particular relates to a finned heat exchanger. Background Art

[0002] Finned heat exchanger is a heat exchange system widely used in refrigerators, mainly composed of base tubes and fins. The base tube is usually a round tube, usually passing hot fluid into the tube, and transferring heat to the external fins through the tube wall; the fins are usually tightly connected to the base tube, and their function is to expand the surface area of ​​the heat exchange tube and improve the heat exchange effect. The working principle of the finned heat exchanger: when the cold fluid passes through the fins on the outside of the finned tube, it exchanges heat with the hot fluid in the tube between the fins, and the heat of the hot fluid is transferred to the cold fluid, causing it to heat up. The presence of the fins increases the contact area between the heat exchange tube and the hot fluid outside the tube, and the heat exchange effect is improved.

[0003] When the base tube is in use, the tube body is usually bent into a U shape to improve the heat exchange efficiency. However, due to the curvature of the bending part of the U-shaped base tube, dust and debris are easily accumulated there, affecting the normal discharge of the liquid in the tube and causing blockage of the base tube. Summary of the invention

[0004] The purpose of the present invention is to provide a finned heat exchanger to solve the technical problems in the prior art.

[0005] The objective of the present invention can be achieved through the following technical scheme: a fin-type heat exchanger, which includes a base frame, a base tube assembly is installed in the base frame, a circular fin is installed on the base tube assembly, the base tube assembly includes a straight tube and a curved tube, the straight tube and the curved tube are connected by a bellows, a cross plate is installed in the base frame, and the cross plate fixes the curved tube; a cylinder is installed on the base frame, the cylinder output end is connected to the dredging assembly, the dredging assembly is connected to the pull block, a rotating shaft is rotatably installed on the pull block, the rotating shaft is connected to the connecting sleeve through a connecting rod, and the connecting sleeve is installed on the straight tube; the dredging assembly and the pull block are driven to move synchronously by the cylinder, the pull block lifts the straight tube through the connecting rod, and the curvature between the straight tube and the curved tube is increased.

[0006] As a further optimization or improvement of this solution, a through groove and a transverse sliding groove are respectively provided on the transverse plate, and the through groove and the transverse sliding groove are connected. The dredging component includes a sliding rod and a U-shaped plate, and the sliding rod is fixedly connected to the U-shaped plate. The sliding rod slides in the transverse sliding groove, and the U-shaped plate slides in the through groove. The sliding rod is connected to the cylinder, and the U-shaped plate is connected to the pull block.

[0007] As a further optimization or improvement of the present solution, the dredging component further includes a guide plate and a convex roller, the guide plate is installed in the through groove, the convex roller is installed on the guide plate, and a transmission roller is installed at the bottom of the pulling block, and the transmission roller is in contact with the convex roller.

[0008] As a further optimization or improvement of the present solution, a vertical slide groove is provided on the pull block, a slider is installed on the U-shaped plate, and the slider is slidably matched with the vertical slide groove.

[0009] As a further optimization or improvement of this solution, a limit block is fixedly installed on the pulling block, and the limit block abuts against the connecting rod.

[0010] As a further optimization or improvement of the present solution, a connecting plate is installed on the side wall of the base frame, a cylinder is fixedly installed on the connecting plate, and a chamfer is provided on the transverse plate.

[0011] As a further optimization or improvement of this solution, a temperature sensor is installed on the bent pipe, and the sensor is connected to the cylinder.

[0012] Beneficial effects of the present invention:

[0013] (1) The present invention uses a cylinder to pull the U-shaped plate, and the U-shaped plate drives the pull block to move synchronously. As the pull block moves, the rotating shaft on the pull block rotates, so that the connecting rod changes from an inclined state to a vertical state. At the same time, the connecting rod gradually supports the straight pipe. Under the action of the corrugated pipe, the curvature between the straight pipe and the bent pipe gradually increases, increasing the slope between the bent pipe and the straight pipe, improving the efficiency of dust and other debris passing through the bent pipe, and reducing the probability of blockage of the base pipe assembly.

[0014] (2) The present invention uses a cylinder to pull the U-shaped plate, and the U-shaped plate drives the pulling block to move synchronously. Under the cooperation of the driving roller at the bottom of the pulling block and the convex roller on the guide plate, the pulling block drives the connecting rod and the straight tube to continuously rise and fall during the process of the connecting rod opening the straight tube. The ups and downs movement of the straight tube loosens the debris in the tube, so that the liquid in the tube can smoothly flush out the debris, thereby avoiding blockage of the base tube assembly.

[0015] (3) After the present invention lifts the straight pipe to a fixed height through the connecting rod, the limit block limits the connecting rod, and the cylinder continues to operate. The cylinder pulls the straight pipe through the clearing assembly and the connecting rod, and the folded part of the bellows is gradually stretched, so that the fold of the bellows is gradually expanded. When the bellows is stretched to a fixed length, the cylinder stops. At this time, the debris in the fold of the bellows is exposed, and then the debris in the fold of the bellows is cleaned by the liquid flowing in the pipe, so as to avoid the bellows being damaged by squeezing the debris accumulated in the fold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a front view of the overall structure of the present invention.

[0019] Figure 3 Schematic diagram of the straight pipe and curved pipe connection structure.

[0020] Figure 4 It is a schematic diagram of the connection structure between the dredging component and the base pipe component.

[0021] Figure 5 It is a front view of the connection structure between the dredging component and the base pipe component.

[0022] Figure 6 for Figure 5 A magnified view of the structure of part A.

[0023] Figure 7 It is a schematic diagram of the connection structure between the slider and the vertical slide.

[0024] The following are marked in the figure: 1. base frame; 2. connecting plate; 3. cylinder; 4. base pipe assembly; 401. straight pipe; 402. bent pipe; 5. corrugated pipe; 6. circular fin; 7. transverse plate; 8. dredging assembly; 801. slide rod; 802. U-shaped plate; 803. guide plate; 804. convex roller; 805. slider; 806. vertical slide groove; 9. connecting sleeve; 10. chamfer; 11. through groove; 12. transverse slide groove; 13. connecting rod; 14. pull block; 15. limit block; 16. transmission roller; 17. rotating shaft. DETAILED DESCRIPTION

[0025] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 7 A fin type heat exchanger comprises a base frame 1, a base tube assembly 4 is installed in the base frame 1, a circular fin 6 is installed on the base tube assembly 4, the base tube assembly 4 comprises a straight tube 401 and a curved tube 402, the straight tube 401 and the curved tube 402 are connected by a bellows 5, a transverse plate 7 is installed in the base frame 1, and the transverse plate 7 fixes the curved tube 402; a cylinder 3 is installed on the base frame 1, the output end of the cylinder 3 is connected to a dredging assembly 8, the dredging assembly 8 is connected to a pull block 14, a rotating shaft 17 is rotatably installed on the pull block 14, the rotating shaft 17 is connected to a sleeve 9 through a connecting rod 13, and a sleeve 9 is installed on the straight tube 401; the dredging assembly 8 and the pull block 14 are driven to move synchronously by the cylinder 3, the pull block 14 lifts the straight tube 401 through the connecting rod 13, and increases the curvature between the straight tube 401 and the curved tube 402.

[0027] Specifically, a temperature sensor is installed on the curved pipe 402 , and the sensor is connected to the cylinder 3 .

[0028] It should be noted that the temperature sensor monitors the temperature of the elbow 402 in real time. If the temperature of the elbow 402 decreases, while the heat exchange efficiency of the heat exchanger remains unchanged, it means that the flow rate of the fluid in the pipe at that position decreases, which indirectly indicates that blockage occurs at that position.

[0029] When in use, the cylinder 3 pulls the U-shaped plate 802 through the slide rod 801, see Figure 5 and Figure 6 The U-shaped plate 802 drives the pull block 14 to move synchronously. As the pull block 14 moves, the rotating shaft 17 on the pull block 14 rotates, so that the connecting rod 13 changes from an inclined state to a vertical state. At the same time, the connecting rod 13 gradually supports the straight pipe 401. Under the action of the bellows 5, the curvature between the straight pipe 401 and the curved pipe 402 gradually increases, and the slope between the curved pipe 402 and the straight pipe 401 is increased, thereby improving the efficiency of dust and other debris passing through the curved pipe 402 and reducing the probability of blockage of the base pipe assembly 4.

[0030] See also Figure 5 and Figure 6 The transverse plate 7 is respectively provided with a through groove 11 and a transverse groove 12, the through groove 11 and the transverse groove 12 are connected, the dredging component 8 includes a sliding rod 801 and a U-shaped plate 802, the sliding rod 801 is fixedly connected to the U-shaped plate 802, the sliding rod 801 slides in the transverse groove 12, the U-shaped plate 802 slides in the through groove 11, the sliding rod 801 is connected to the cylinder 3, and the U-shaped plate 802 is connected to the pull block 14.

[0031] Specifically, a connecting plate 2 is installed on the side wall of the base frame 1 , a cylinder 3 is fixedly installed on the connecting plate 2 , and a chamfer 10 is provided on the transverse plate 7 .

[0032] It should be noted that the dredging components 8 all adopt a hidden design, so that the dredging components 8 are hidden in the horizontal plate 7, ensuring uniform air flow and reducing wind noise. At the same time, chamfers 10 are opened on the sides of the horizontal plate 7 to reduce air resistance.

[0033] See also Figure 4-Figure 7 The dredging component 8 also includes a guide plate 803 and a convex roller 804. The guide plate 803 is installed in the through groove 11, and the convex roller 804 is installed on the guide plate 803. A transmission roller 16 is installed at the bottom of the pulling block 14, and the transmission roller 16 is in contact with the convex roller 804.

[0034] Specifically, a vertical slide groove 806 is provided on the pulling block 14 , a sliding block 805 is installed on the U-shaped plate 802 , and the sliding block 805 is slidably matched with the vertical slide groove 806 .

[0035] Specifically, a limiting block 15 is fixedly mounted on the pulling block 14 , and the limiting block 15 abuts against the connecting rod 13 .

[0036] It should be noted that if the debris inside the curved pipe 402 is tightly clogged, even if the slope between the curved pipe 402 and the straight pipe 401 is increased, the debris is not easy to be discharged from the pipe if the hydraulic pressure inside the pipe remains unchanged.

[0037] Therefore, when the cylinder 3 pulls the U-shaped plate 802 through the slide rod 801, the U-shaped plate 802 drives the pull block 14 to move synchronously. Under the cooperation of the transmission roller 16 at the bottom of the pull block 14 and the convex roller 804 on the guide plate 803, during the process of the connecting rod 13 stretching the straight tube 401, the pull block 14 drives the connecting rod 13 and the straight tube 401 to continuously rise and fall. At the same time, the slider 805 slides in the vertical slide groove 806. The ups and downs movement of the straight tube 401 loosens the debris in the tube, so that the liquid in the tube can smoothly flush out the debris, thereby avoiding blockage of the base tube assembly 4.

[0038] It should be noted that as the slopes of the straight tube 401 and the curved tube 402 change, the bellows 5 will stretch accordingly, which may easily lead to accumulation of debris at the folds of the bellows 5. When the straight tube 401 is reset, the bellows 5 contracts. At this time, the bellows 5 will squeeze the debris accumulated at the folds, which may easily cause damage to the bellows 5 and lead to liquid leakage.

[0039] Therefore, when the connecting rod 13 lifts the straight pipe 401 to a fixed height, the limit block 15 limits the connecting rod 13, and the cylinder 3 continues to operate. The cylinder 3 pulls the straight pipe 401 through the clearing component 8 and the connecting rod 13, and the folded part of the bellows 5 is gradually stretched, so that the folded gap of the bellows 5 is gradually expanded. When the bellows 5 is stretched to a fixed length, the cylinder 3 stops. At this time, the debris in the folded gap of the bellows 5 is exposed, and then the debris in the folded gap of the bellows 5 is cleaned up by the liquid flowing in the pipe, so as to avoid the bellows 5 from being damaged by squeezing the debris accumulated in the folded gap.

[0040] It should be noted that the stretching length of the bellows 5 is controlled within the normal expansion and contraction range of the bellows 5 .

[0041] Working principle of the present invention:

[0042] When in use, the temperature sensor monitors the temperature of the curved pipe 402 in real time. If the temperature of the curved pipe 402 decreases, it indicates that a blockage occurs at that position. The temperature sensor controls the cylinder 3 to start, causing the cylinder 3 to pull the dredging component 8.

[0043] During this process, the cylinder 3 pulls the U-shaped plate 802 through the slide rod 801, see Figure 5 and Figure 6The U-shaped plate 802 drives the pull block 14 to move synchronously. As the pull block 14 moves, the rotating shaft 17 on the pull block 14 rotates, so that the connecting rod 13 changes from an inclined state to a vertical state. At the same time, the connecting rod 13 gradually supports the straight pipe 401. Under the action of the bellows 5, the curvature between the straight pipe 401 and the curved pipe 402 gradually increases, and the slope between the curved pipe 402 and the straight pipe 401 is increased, thereby improving the efficiency of dust and other debris passing through the curved pipe 402 and reducing the probability of blockage of the base pipe assembly 4.

[0044] Specifically, if the curved pipe 402 is tightly clogged with debris, even if the slope between the curved pipe 402 and the straight pipe 401 is increased, the debris is difficult to be discharged from the pipe if the hydraulic pressure in the pipe remains unchanged.

[0045] Therefore, when the cylinder 3 pulls the U-shaped plate 802 through the slide rod 801, the U-shaped plate 802 drives the pull block 14 to move synchronously. Under the cooperation of the transmission roller 16 at the bottom of the pull block 14 and the convex roller 804 on the guide plate 803, during the process of the connecting rod 13 opening the straight tube 401, the pull block 14 drives the connecting rod 13 and the straight tube 401 to continuously rise and fall. The ups and downs movement of the straight tube 401 loosens the debris in the tube, so that the liquid in the tube can smoothly flush out the debris, thereby avoiding blockage of the base tube assembly 4.

[0046] Specifically, as the slopes of the straight tube 401 and the curved tube 402 change, the bellows 5 will stretch accordingly, which may easily lead to accumulation of debris at the folds of the bellows 5. When the straight tube 401 is reset, the bellows 5 contracts. At this time, the bellows 5 will squeeze the debris accumulated at the folds, which may easily cause damage to the bellows 5 and lead to liquid leakage.

[0047] Therefore, when the connecting rod 13 lifts the straight pipe 401 to a fixed height, the limit block 15 limits the connecting rod 13, and the cylinder 3 continues to operate. The cylinder 3 pulls the straight pipe 401 through the clearing component 8 and the connecting rod 13, and the folded part of the bellows 5 is gradually stretched, so that the folded gap of the bellows 5 is gradually expanded. When the bellows 5 is stretched to a fixed length, the cylinder 3 stops. At this time, the debris in the folded gap of the bellows 5 is exposed, and then the debris in the folded gap of the bellows 5 is cleaned up by the liquid flowing in the pipe, so as to avoid the bellows 5 from being damaged by squeezing the debris accumulated in the folded gap.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A finned heat exchanger, characterized in that: It comprises a base frame (1), a base tube assembly (4) is installed in the base frame (1), a circular fin (6) is installed on the base tube assembly (4), the base tube assembly (4) comprises a straight tube (401) and a curved tube (402), the straight tube (401) and the curved tube (402) are connected via a corrugated tube (5), a transverse plate (7) is installed in the base frame (1), and the transverse plate (7) fixes the curved tube (402); The base frame (1) is provided with a cylinder (3), the output end of the cylinder (3) is connected to a dredging assembly (8), the dredging assembly (8) is connected to a pull block (14), a rotating shaft (17) is rotatably installed on the pull block (14), the rotating shaft (17) is connected to a connecting sleeve (9) through a connecting rod (13), and the connecting sleeve (9) is installed on the straight pipe (401); the dredging assembly (8) and the pull block (14) are driven to move synchronously by the cylinder (3), and the pull block (14) lifts up the straight pipe (401) through the connecting rod (13), thereby increasing the curvature between the straight pipe (401) and the curved pipe (402); The transverse plate (7) is provided with a through groove (11) and a transverse sliding groove (12), the through groove (11) and the transverse sliding groove (12) are connected, the dredging component (8) comprises a sliding rod (801) and a U-shaped plate (802), the sliding rod (801) and the U-shaped plate (802) are fixedly connected, the sliding rod (801) is located in the transverse sliding groove (12) and slides, the U-shaped plate (802) is located in the through groove (11) and slides, the sliding rod (801) is connected to the cylinder (3), and the U-shaped plate (802) is connected to the pull block (14); The dredging assembly (8) further comprises a guide plate (803) and a convex roller (804); the guide plate (803) is installed in the through groove (11); the convex roller (804) is installed on the guide plate (803); a transmission roller (16) is installed at the bottom of the pulling block (14); the transmission roller (16) is in contact with the convex roller (804).

2. The finned heat exchanger according to claim 1, characterized in that: A vertical slide groove (806) is provided on the pulling block (14), a sliding block (805) is installed on the U-shaped plate (802), and the sliding block (805) is slidably matched with the vertical slide groove (806).

3. The finned heat exchanger according to claim 1, characterized in that: A limiting block (15) is fixedly mounted on the pulling block (14), and the limiting block (15) abuts against the connecting rod (13).

4. The finned heat exchanger according to claim 1, characterized in that: A connecting plate (2) is installed on the side wall of the base frame (1), a cylinder (3) is fixedly installed on the connecting plate (2), and a chamfer (10) is provided on the transverse plate (7).

5. The finned heat exchanger according to claim 1, characterized in that: A temperature sensor is installed on the curved pipe (402), and the sensor is connected to the cylinder (3).

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