Sheet-fin tubular evaporator structure

Abstract

The utility model relates to a sleeve sheet tube type evaporator structure, which belongs to the technical field of refrigerating systems and comprises an air pipe, a moisture absorption curtain, a fan and a heat exchange tube are respectively arranged on the inner side of the air pipe, and a cleaning component is arranged on the outer side of the heat exchange tube. The cleaning assembly comprises a mounting shell fixedly connected to the top of the air pipe, a motor is fixedly mounted in the mounting shell, a shaft rod is mounted on an output shaft of the motor in a transmission mode, the lower end of the shaft rod extends into the air pipe and is fixedly connected with a lead screw, and the outer side of the lead screw is in threaded connection with a threaded sleeve. A cleaning plate is fixedly connected to the outer side of the threaded sleeve and arranged on the outer wall of the heat exchange pipe in a sleeving mode. A collecting assembly is further arranged at the bottom of the air pipe. According to the nest plate tube type evaporator structure, the heat exchange tube is automatically cleaned, cleaning is convenient, the heat exchange efficiency of the heat exchange tube is guaranteed, the performance of a refrigerating system is improved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration systems, in particular to a sleeve-tube evaporator structure. Background Art

[0002] In the refrigeration system of cold chain logistics cold storage, sleeve-tube evaporators are widely used. When the air in the cold room blows through the evaporator, the air temperature is lower than zero Celsius, and frost forms on the outer surface of the heat exchange tube. As the frost layer increases, the sleeves are blocked by the accumulated solidified frost, the resistance of the evaporator fan increases, and even the air cannot flow. At the same time, the thermal resistance of the evaporator increases, the heat transfer temperature difference increases, the evaporation temperature decreases, the pressure ratio of the refrigeration compressor increases, the power consumption increases, and the performance of the refrigeration system decreases. The use of electric heating to defrost requires electricity, and hot gas defrosting makes the system complicated.

[0003] Patent No. CN208567206U in the prior art discloses a sleeve-tube evaporator structure, including an air duct and a sleeve-tube evaporator arranged in the air duct, a first fan, a second fan and a movable moisture absorbing curtain; the first fan and the second fan are respectively arranged on the air outlet side and the air inlet side of the sleeve-tube evaporator, the moisture absorbing curtain is arranged at the air inlet of the sleeve-tube evaporator, the second fan is located between the moisture absorbing curtain and the sleeve-tube evaporator and close to the position of the moisture absorbing curtain, and the second fan and the moisture absorbing curtain are both arranged in the air duct; air containing moisture is blown through the moisture absorbing curtain, and the moisture absorbent in the moisture absorbing curtain is absorbed by the moisture absorbent in the air blowing through the evaporator, and the dry air is then blown between the fins on the outer surface of the evaporator, thereby reducing the thermal resistance of the evaporator, reducing the heat transfer temperature difference, reducing the pressure ratio of the refrigeration compressor, reducing the power consumption, and improving the performance of the refrigeration system.

[0004] The above-mentioned sleeve-tube evaporator structure is not convenient for cleaning the heat exchange tubes inside it during use. After long-term use, some impurities will adhere to the outer wall of the heat exchange tube, which affects the heat exchange effect of the heat exchange tube and has a certain impact on the refrigeration system. Therefore, a sleeve-tube evaporator structure is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a sleeve-and-tube evaporator structure, which has the advantages of easy cleaning of the heat exchange tubes, etc., and solves the problem that the existing sleeve-and-tube evaporator structure is inconvenient to clean the heat exchange tubes inside when in use, and some impurities will adhere to the outer wall of the heat exchange tube after long-term use, affecting the heat exchange effect of the heat exchange tube and causing a certain impact on the refrigeration system.

[0006] To achieve the above object, the utility model provides the following technical solutions: a sleeve-tube evaporator structure, comprising an air duct, the inner side of which is respectively provided with a moisture absorbing curtain, a fan and a heat exchange tube, and the outer side of which is provided with a cleaning component;

[0007] The cleaning assembly comprises a mounting shell fixedly connected to the top of the air duct, a motor is fixedly installed inside the mounting shell, a shaft is transmission-mounted on the output shaft of the motor, the lower end of the shaft extends into the air duct and is fixedly connected to a screw rod, the outer side of the screw rod is threadedly connected to a threaded sleeve, the outer side of the threaded sleeve is fixedly connected to a cleaning plate, and the cleaning plate is sleeved on the outer wall of the heat exchange tube;

[0008] A collecting component is also arranged at the bottom of the air duct.

[0009] Furthermore, a main gear is fixedly mounted on the output shaft of the motor, a slave gear is fixedly connected to the upper end of the shaft, and the main gear is meshed with the slave gear.

[0010] Furthermore, the outer wall of the shaft is connected to the air duct via a bearing, and the lower end of the screw rod is connected to the air duct via a bearing.

[0011] Furthermore, a guide rod is fixedly installed inside the air duct, and a sliding sleeve is fixedly connected to one end of the cleaning plate away from the threaded sleeve, and the sliding sleeve is sleeved on the outer wall of the guide rod.

[0012] Furthermore, a plurality of through holes are provided on the inner side of the cleaning plate, and a scraper ring is fixedly connected to the inner side of the through hole, and the scraper ring is matched with the outer wall of the heat exchange tube.

[0013] Furthermore, the collecting assembly includes a collecting box fixedly connected to the bottom of the air duct, a cabinet door is provided on one side of the collecting box, an opening is provided between the air duct and the collecting box, and the opening is located at the lower side of the heat exchange tube.

[0014] Furthermore, a mounting frame is fixedly connected to the bottom of the air duct, an electric push rod is fixedly installed on the inner side of the mounting frame, the output shaft of the electric push rod extends to the inside of the collection box and is fixedly connected to a connecting plate, the upper end of the connecting plate is fixedly connected to a baffle, the end of the baffle away from the cabinet door extends to the outside of the collection box, and the baffle is located on the lower side of the opening.

[0015] Compared with the prior art, the utility model provides a sleeve-tube evaporator structure, which has the following beneficial effects:

[0016] The sleeve-tube evaporator structure drives the main gear and the slave gear through the starting motor, and drives the shaft and the screw to rotate. The screw drives the threaded sleeve to move up and down, thereby driving the cleaning plate to move up and down along the outer wall of the heat exchange tube, so that the scraper ring in the cleaning plate wipes the outer wall of the heat exchange tube, thereby cleaning the impurities attached to the outer wall of the heat exchange tube. The removed impurities fall into the collection box through the opening under the action of gravity, thereby realizing automatic cleaning of the heat exchange tube, facilitating cleaning, ensuring the heat exchange efficiency of the heat exchange tube, helping to improve the performance of the refrigeration system, and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of the cleaning component of the utility model;

[0019] Figure 3 It is a structural stereogram of the cleaning plate of the utility model.

[0020] In the figure: 1. air duct; 2. moisture absorption curtain; 3. fan; 4. heat exchange tube; 5. mounting shell; 6. motor; 7. main gear; 8. slave gear; 9. shaft; 10. screw rod; 11. threaded sleeve; 12. cleaning plate; 13. scraper ring; 14. guide rod; 15. sliding sleeve; 16. collecting box; 17. opening; 18. mounting frame; 19. electric push rod; 20. connecting plate; 21. baffle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 A tube-and-sheet evaporator structure in this embodiment includes an air duct 1, and a moisture absorbing curtain 2, a fan 3 and a heat exchange tube 4 are respectively arranged on the inner side of the air duct 1.

[0023] In this embodiment, a cleaning assembly is provided on the outside of the heat exchange tube 4, and the cleaning assembly includes a mounting shell 5 fixedly connected to the top of the air duct 1, and a motor 6 is fixedly installed inside the mounting shell 5. A shaft 9 is transmission-installed on the output shaft of the motor 6, and the lower end of the shaft 9 extends to the inside of the air duct 1 and is fixedly connected to a screw rod 10. The outer side of the screw rod 10 is threadedly connected to a threaded sleeve 11, and the outer side of the threaded sleeve 11 is fixedly connected to a cleaning plate 12, and the cleaning plate 12 is sleeved on the outer wall of the heat exchange tube 4.

[0024] Among them, a main gear 7 is fixedly installed on the output shaft of the motor 6, and a slave gear 8 is fixedly connected to the upper end of the shaft rod 9. The main gear 7 is meshed with the slave gear 8. The outer wall of the shaft rod 9 is connected to the air duct 1 through a bearing, and the lower end of the screw rod 10 is connected to the air duct 1 through a bearing. In addition, a guide rod 14 is fixedly installed inside the air duct 1, and a sliding sleeve 15 is fixedly connected to the end of the cleaning plate 12 away from the threaded sleeve 11, and the sliding sleeve 15 is sleeved on the outer wall of the guide rod 14.

[0025] It should be noted that a plurality of through holes are opened on the inner side of the cleaning plate 12, and a scraper ring 13 is fixedly connected to the inner side of the through hole. The scraper ring 13 is adapted to the outer wall of the heat exchange tube 4, and the scraper ring 13 is made of rubber. The scraper ring 13 is used to wipe the outer wall of the heat exchange tube 4, thereby facilitating cleaning.

[0026] In this embodiment, a collecting assembly is further provided at the bottom of the air duct 1, and the collecting assembly includes a collecting box 16 fixedly connected to the bottom of the air duct 1, and a cabinet door is provided on one side of the collecting box 16. An opening 17 is provided between the air duct 1 and the collecting box 16, and the opening 17 is located at the lower side of the heat exchange tube 4. The opening 17 facilitates impurities on the heat exchange tube 4 to fall into the collecting box 16, and the staff can clean the impurities in the collecting box 16 through the cabinet door, which is convenient for cleaning.

[0027] It should be noted that a mounting frame 18 is fixedly connected to the bottom of the air duct 1, an electric push rod 19 is fixedly installed on the inner side of the mounting frame 18, the output shaft of the electric push rod 19 extends to the inside of the collection box 16 and is fixedly connected to a connecting plate 20, and a baffle 21 is fixedly connected to the upper end of the connecting plate 20, and the end of the baffle 21 away from the cabinet door extends to the outside of the collection box 16, and the baffle 21 is located on the lower side of the opening 17. The baffle 21 can be driven to move by the drive of the electric push rod 19, and the closure of the opening 17 can be adjusted conveniently by setting the baffle 21.

[0028] The working principle of the above embodiment is:

[0029] When the utility model is in use, the connecting plate 20 is driven to move by starting the electric push rod 19, and the baffle plate 21 is moved to the outside of the collection box 16. The main gear 7 and the slave gear 8 are driven by the starting motor 6, and the shaft 9 and the screw rod 10 are driven to rotate. The screw rod 10 drives the threaded sleeve 11 to move up and down, thereby driving the cleaning plate 12 to move up and down along the outer wall of the heat exchange tube 4, so that the scraper ring 13 in the cleaning plate 12 wipes the outer wall of the heat exchange tube 4, thereby cleaning the impurities attached to the outer wall of the heat exchange tube 4. The removed impurities fall into the collection box 16 through the opening 17 under the action of gravity. After cleaning, the electric push rod 19 is controlled to drive the baffle plate 21 to move to the inside of the collection box 16, and the opening 17 can be closed.

[0030] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical methods, and they can be implemented as long as they can achieve their beneficial effects. In addition, the electrical components appearing in the text are all electrically connected to the main controller and the power supply. The main controller is a conventional known device, and there is an existing disclosed power connection technology. Therefore, the text will not go into too much detail on its specific structural composition and working principle.

[0031] It should be noted that in this article, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tube-and-sheet evaporator structure, comprising an air duct (1), wherein a moisture absorbing curtain (2), a fan (3) and a heat exchange tube (4) are respectively arranged on the inner side of the air duct (1), characterized in that: A cleaning component is provided on the outer side of the heat exchange tube (4); The cleaning assembly comprises a mounting shell (5) fixedly connected to the top of the air duct (1), a motor (6) being fixedly mounted inside the mounting shell (5), a shaft (9) being transmission-mounted on the output shaft of the motor (6), the lower end of the shaft (9) extending into the interior of the air duct (1) and being fixedly connected to a screw rod (10), the outer side of the screw rod (10) being threadedly connected to a threaded sleeve (11), the outer side of the threaded sleeve (11) being fixedly connected to a cleaning plate (12), the cleaning plate (12) being sleeved on the outer wall of the heat exchange tube (4); A collecting component is also provided at the bottom of the air duct (1).

2. The structure of a tube-and-sheet evaporator according to claim 1, characterized in that: A main gear (7) is fixedly mounted on the output shaft of the motor (6), a slave gear (8) is fixedly connected to the upper end of the shaft rod (9), and the main gear (7) is meshed with the slave gear (8).

3. The structure of a tube-and-sheet evaporator according to claim 1, characterized in that: The outer wall of the shaft rod (9) is connected to the air duct (1) via a bearing, and the lower end of the screw rod (10) is connected to the air duct (1) via a bearing.

4. The structure of a tube-and-sheet evaporator according to claim 1, characterized in that: A guide rod (14) is fixedly installed inside the air duct (1), and a sliding sleeve (15) is fixedly connected to one end of the cleaning plate (12) away from the threaded sleeve (11), and the sliding sleeve (15) is sleeved on the outer wall of the guide rod (14).

5. The structure of a tube-and-sheet evaporator according to claim 1, characterized in that: A plurality of through holes are provided on the inner side of the cleaning plate (12), and a scraper ring (13) is fixedly connected to the inner side of the through hole, and the scraper ring (13) is adapted to the outer wall of the heat exchange tube (4).

6. The structure of a tube-and-sheet evaporator according to claim 1, characterized in that: The collection assembly comprises a collection box (16) fixedly connected to the bottom of the air duct (1), a cabinet door is provided on one side of the collection box (16), an opening (17) is provided between the air duct (1) and the collection box (16), and the opening (17) is located at the lower side of the heat exchange tube (4).

7. The structure of a tube-and-sheet evaporator according to claim 6, characterized in that: The bottom of the air duct (1) is fixedly connected to a mounting frame (18), an electric push rod (19) is fixedly installed on the inner side of the mounting frame (18), an output shaft of the electric push rod (19) extends to the inside of the collection box (16) and is fixedly connected to a connecting plate (20), an upper end of the connecting plate (20) is fixedly connected to a baffle (21), an end of the baffle (21) away from the cabinet door extends to the outside of the collection box (16), and the baffle (21) is located at the lower side of the opening (17).

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