Heat exchanger for a freeze-dryer

Abstract

The utility model discloses a freeze dryer is with heat exchanger, including the heat preservation tower and motor, the upper and lower both ends of heat preservation tower are installed respectively and are penetrated with the refrigerant inlet pipe and refrigerant outlet pipe, and the upper surface of heat preservation tower on refrigerant inlet pipe side is provided with motor, and the lower extreme of motor output shaft is fixedly connected with the reciprocating lead screw, and the outer wall of reciprocating lead screw is provided with the descaling mechanism, the side of heat preservation tower is fixed with heat exchange pipe and is penetrated, and the outer wall of heat exchange pipe is fixedly provided with the heat exchange fin, and the upper end outer wall of heat exchange pipe is fixedly connected with the filter bowl, and the side of filter bowl is installed and is penetrated with the air inlet pipe, the upper end outer wall of filter bowl is equipped with the end cover, and the inner wall of center place of end cover is fixedly connected with the support, and the inner wall of end cover of support side is fixedly provided with the sealing washer. The freeze dryer is with heat exchanger and improves the descaling capacity, thereby facilitating device to remove the scale body on the surface of heat exchange pipe, and the use effect of heat exchanger is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of heat exchange devices for freeze dryers, specifically a heat exchanger for freeze dryers. Background Technology

[0002] A freeze dryer is a device for drying materials. It can preserve the original components, structure, activity and appearance of materials to the greatest extent. Therefore, freeze dryers are widely used in the fields of medicine, food, chemical industry and biological research. The heat exchanger is an important component of the freeze dryer, and its main function is to transfer and exchange heat.

[0003] However, existing heat exchangers for freeze dryers have the following problems:

[0004] Because scale buildup on the surface of heat exchange tubes can affect the heat exchange efficiency of the tubes, thus affecting the normal operation of the freeze dryer, a device is needed to easily remove the scale from the surface of the heat exchange tubes. However, the existing heat exchangers used in freeze dryers have insufficient descaling capabilities, making it difficult for the device to remove the scale from the surface of the heat exchange tubes, which in turn affects the performance of the heat exchanger.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing heat exchangers used in freeze dryers. Utility Model Content

[0006] The purpose of this utility model is to provide a heat exchanger for a freeze dryer, so as to solve the problem mentioned in the background art that the existing heat exchangers for freeze dryers have insufficient descaling capacity, which makes it difficult for the device to remove scale from the surface of the heat exchange tubes, thus easily affecting the performance of the heat exchanger.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a heat exchanger for a freeze dryer, comprising an insulation tower and a motor. A refrigerant inlet pipe and a refrigerant outlet pipe are respectively installed through the upper and lower ends of the insulation tower. A motor is installed on the upper surface of the insulation tower on the side of the refrigerant inlet pipe. A reciprocating screw is fixedly connected to the lower end of the motor output shaft, and a descaling mechanism is provided on the outer wall of the reciprocating screw. A heat exchange tube is fixedly installed through the side of the insulation tower, and heat exchange fins are fixedly provided on the outer wall of the heat exchange tube. A filter cylinder is fixedly connected to the upper outer wall of the heat exchange tube, and an air inlet pipe is installed through the side of the filter cylinder. An end cap is fitted onto the upper outer wall of the filter cylinder, and a bracket is fixedly connected to the inner wall of the center of the end cap. A sealing gasket is fixedly provided on the inner wall of the end cap on the side of the bracket, and a filter frame is fixedly installed at the lower end of the bracket.

[0008] Preferably, the reciprocating screw and the insulation tower form a rotating structure.

[0009] Preferably, the descaling mechanism includes a lead screw slider and a descaling plate, wherein the lead screw slider is installed on the outer wall of the reciprocating lead screw, and the descaling plate is fixedly connected to the end face of the lead screw slider.

[0010] Preferably, the descaling plate forms a sliding structure with the heat exchange tube and the heat exchange fins respectively, and the heat exchange fins are distributed at equal angles on the heat exchange tube.

[0011] Preferably, the end cap and the filter cartridge are threaded together, and the filter cartridge and the sealing gasket are in contact.

[0012] Preferably, the cross-sectional shape of the support is set to a "T" shape, and the filter frame and filter cylinder are slidably configured.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the heat exchanger of this freeze dryer improves the descaling capacity, thereby facilitating the removal of scale from the surface of the heat exchange tubes and ensuring the performance of the heat exchanger.

[0014] The motor drives the reciprocating screw, causing the screw slider to move vertically back and forth. At this time, the screw slider drives the descaling plate to move back and forth relative to the heat exchange tubes and heat exchange fins, thereby cleaning the scale on the surface of the heat exchange tubes and heat exchange fins. Therefore, the device improves the descaling capacity, making it easier for the device to remove scale from the surface of the heat exchange tubes, thus ensuring the performance of the heat exchanger. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the orthographic section of the present invention;

[0016] Figure 2 This is a schematic diagram of the front section structure of the filter barrel of this utility model;

[0017] Figure 3 This is a top view of the descaling mechanism of this utility model;

[0018] Figure 4 This is a partial top view of the filter frame of this utility model.

[0019] In the diagram: 1. Insulation tower; 2. Refrigerant inlet pipe; 3. Refrigerant outlet pipe; 4. Motor; 5. Reciprocating screw; 6. Descaling mechanism; 601. Screw slider; 602. Descaling plate; 7. Heat exchange tube; 8. Heat exchange fin; 9. Filter cartridge; 10. Air inlet pipe; 11. End cap; 12. Support; 13. Sealing gasket; 14. Filter frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a heat exchanger for a freeze dryer, comprising an insulation tower 1, a refrigerant inlet pipe 2, a refrigerant outlet pipe 3, a motor 4, a reciprocating lead screw 5, a descaling mechanism 6, a lead screw slider 601, a descaling plate 602, a heat exchange tube 7, heat exchange fins 8, a filter cartridge 9, an air inlet pipe 10, an end cap 11, a bracket 12, a sealing gasket 13, and a filter frame 14. The refrigerant inlet pipe 2 and the refrigerant outlet pipe 3 are respectively installed through the upper and lower ends of the insulation tower 1. The motor 4 is mounted on the upper surface of the insulation tower 1 on the side of the refrigerant inlet pipe 2, and the lower end of the output shaft of the motor 4 is fixedly connected to... A reciprocating screw 5 is provided, and a descaling mechanism 6 is provided on the outer wall of the reciprocating screw 5. A heat exchange tube 7 is fixedly installed through the side of the heat exchange tower 1, and a heat exchange fin 8 is fixedly installed on the outer wall of the heat exchange tube 7. A filter cylinder 9 is fixedly connected to the upper outer wall of the heat exchange tube 7, and an air inlet pipe 10 is installed through the side of the filter cylinder 9. An end cap 11 is fitted on the upper outer wall of the filter cylinder 9, and a bracket 12 is fixedly connected to the inner wall of the center of the end cap 11. A sealing gasket 13 is fixedly installed on the inner wall of the end cap 11 on the side of the bracket 12, and a filter frame 14 is fixedly installed at the lower end of the bracket 12.

[0022] The reciprocating screw 5 and the insulation tower 1 form a rotating structure, which makes it easy for the motor 4 to drive the reciprocating screw 5 to rotate stably relative to the insulation tower 1.

[0023] The descaling mechanism 6 includes a lead screw slider 601 and a descaling plate 602. The lead screw slider 601 is installed on the outer wall of the reciprocating lead screw 5, and the descaling plate 602 is fixedly connected to the end face of the lead screw slider 601, so that the descaling mechanism 6 can be driven by the reciprocating lead screw 5 to remove the scale on the heat exchange tube 7 and the heat exchange fin 8.

[0024] The descaling plate 602 forms a sliding structure with the heat exchange tube 7 and the heat exchange fin 8 respectively, and the heat exchange fin 8 is distributed at equal angles on the heat exchange tube 7, which facilitates the descaling plate 602 to slide back and forth relative to the heat exchange tube 7 and the heat exchange fin 8, thereby cleaning the surface of the heat exchange tube 7 and the heat exchange fin 8, and increasing the heat exchange area of ​​the heat exchange tube 7 through the heat exchange fin 8.

[0025] The end cap 11 and the filter cartridge 9 are threaded together, and the filter cartridge 9 and the sealing gasket 13 fit together, which makes it easy for the user to rotate the end cap 11 to disassemble and install the end cap 11, and to improve the sealing performance of the end cap 11 installation through the sealing gasket 13.

[0026] The cross-sectional shape of the bracket 12 is set to a "T" shape. The filter frame 14 and the filter cylinder 9 are slidable, which makes it easy for the user to move the end cap 11. The end cap 11 drives the bracket 12 to slide the filter frame 14 relative to the filter cylinder 9, thereby allowing the filter frame 14 to be installed or removed.

[0027] Working principle: When using the heat exchanger for this freeze dryer, firstly as follows... Figure 1-4As shown, the user moves the end cap 11, causing it to move the bracket 12 so that the filter frame 14 is inserted into the filter cylinder 9. Then, the user places the end cap 11 onto the filter cylinder 9 and tightens it. At this point, the end cap 11 causes the sealing gasket 13 to press tightly against the filter cylinder 9, thus completing the sealing of the filter cylinder 9 and the installation of the filter frame 14. The user then connects the device to the freeze dryer system. Air enters the device through the air inlet pipe 10, then passes through the filter cylinder 9 and filter frame 14 before entering the heat exchange tube 7. The air is filtered by the filter frame 14, preventing impurities from entering the heat exchange tube 7 and causing blockage. As air enters the device, refrigerant enters the insulation tower 1 through the refrigerant inlet pipe 2. The refrigerant then cools the air in the heat exchange tube 7, thus completing the process. The heat exchanger facilitates heat exchange with the air, and the heat exchange fins 8 increase the heat exchange area of ​​the heat exchange tubes 7. The air that has undergone heat exchange is then discharged from the device through the heat exchange tubes 7. Simultaneously, the refrigerant in the insulation tower 1 is discharged from the device through the refrigerant outlet pipe 3. As the device operates, the user starts the motor 4, which drives the reciprocating screw 5 to rotate. The screw slider 601 then moves vertically back and forth relative to the reciprocating screw 5. Simultaneously, the screw slider 601 drives the descaling plate 602 to move back and forth relative to the heat exchange tubes 7 and heat exchange fins 8, thereby cleaning the surfaces of the heat exchange tubes 7 and heat exchange fins 8 and removing scale from their surfaces. Therefore, the device improves its descaling capacity, making it easier to remove scale from the surface of the heat exchange tubes 7, thus ensuring the effective use of the heat exchanger.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat exchanger for a freeze dryer, comprising an insulation tower (1) and a motor (4), characterized in that: The upper and lower ends of the insulation tower (1) are respectively connected by a refrigerant inlet pipe (2) and a refrigerant outlet pipe (3). A motor (4) is installed on the upper surface of the insulation tower (1) on the side of the refrigerant inlet pipe (2). A reciprocating screw (5) is fixedly connected to the lower end of the output shaft of the motor (4). A descaling mechanism (6) is provided on the outer wall of the reciprocating screw (5). A heat exchange tube (7) is fixedly installed through the side of the insulation tower (1). Heat exchange fins are fixedly installed on the outer wall of the heat exchange tube (7). 8), and a filter cylinder (9) is fixedly connected to the upper outer wall of the heat exchange tube (7), and an air inlet pipe (10) is installed through the side of the filter cylinder (9). An end cap (11) is fitted on the upper outer wall of the filter cylinder (9), and a bracket (12) is fixedly connected to the inner wall of the center of the end cap (11). A sealing gasket (13) is fixedly installed on the inner wall of the end cap (11) on the side of the bracket (12), and a filter frame (14) is fixedly installed at the lower end of the bracket (12).

2. The heat exchanger for a freeze dryer according to claim 1, characterized in that: The reciprocating lead screw (5) and the insulation tower (1) form a rotating structure.

3. A heat exchanger for a freeze dryer according to claim 1, characterized in that: The descaling mechanism (6) includes a lead screw slider (601) and a descaling plate (602), and the lead screw slider (601) is installed on the outer wall of the reciprocating lead screw (5), and the end face of the lead screw slider (601) is fixedly connected to the descaling plate (602).

4. A heat exchanger for a freeze dryer according to claim 3, characterized in that: The descaling plate (602) forms a sliding structure with the heat exchange tube (7) and the heat exchange fin (8) respectively, and the heat exchange fin (8) is distributed at equal angles on the heat exchange tube (7).

5. A heat exchanger for a freeze dryer according to claim 1, characterized in that: The end cap (11) and the filter cylinder (9) are threaded together, and the filter cylinder (9) and the sealing gasket (13) are in contact.

6. A heat exchanger for a freeze dryer according to claim 1, characterized in that: The cross-sectional shape of the bracket (12) is set to a "T" shape, and the filter frame (14) and filter cylinder (9) are slidably configured.

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