A plate heat exchanger

Abstract

This application relates to a plate heat exchanger, belonging to the technical field of heat exchangers. It includes a cross frame, and a clamping plate is arranged on the lower surface of the cross frame. The clamping plates are distributed on both sides of the cross frame. A plurality of groups of heat exchange fins are fixedly connected between the clamping plates, and each group of heat exchange fins abuts against each other. A plurality of groups of side guide rails are fixedly installed on both sides of the clamping plate, and the side guide rails are fixedly connected to the side edges of the heat exchange fins. An installation frame is arranged on the cross frame, and the installation frame is slidably arranged on the cross frame. A first driving member is arranged on the cross frame for driving the installation frame to slide into the gap between adjacent heat exchange fins; an attachment is arranged in the installation frame, and the attachment is used for adsorbing impurities in adjacent heat exchangers. The installation frame slides along the length direction of the cross frame, and a second driving member is arranged on the cross frame for driving the installation frame to slide along the length direction of the cross frame. This application has the effect of improving the heat exchange efficiency of the plate heat exchanger.

Description

Technical Field

[0001] This application relates to the technical field of heat exchangers, and particularly to a plate heat exchanger. Background Art

[0002] A plate heat exchanger is a highly efficient heat exchanger formed by stacking a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat exchange is carried out through the plates. A plate heat exchanger is an ideal device for heat exchange between liquid-liquid and liquid-vapor. It has the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small floor area, wide application, long service life, etc. Under the same pressure loss condition, its heat transfer coefficient is 3-5 times higher than that of a tubular heat exchanger, the floor area is one-third of that of a tubular heat exchanger, and the heat recovery rate can be as high as over 90%.

[0003] However, during the use of a plate heat exchanger, due to the curved paths inside the heat exchange fins that increase the liquid travel distance, the plate heat exchanger is prone to blockage, and the blockage of the plate heat exchanger has a greater impact on the heat exchange efficiency. Summary of the Invention

[0004] To improve the heat exchange efficiency of a plate heat exchanger, this application provides a plate heat exchanger.

[0005] The plate heat exchanger provided by this application adopts the following technical solutions:

[0006] A plate heat exchanger includes a cross frame. A clamping plate is arranged on the lower surface of the cross frame, and the clamping plates are distributed on both sides of the cross frame. A plurality of groups of heat exchange fins are fixedly connected between the clamping plates, and each group of heat exchange fins abuts against each other. A plurality of groups of side guide rails are fixedly installed on both sides of the clamping plate, and the side guide rails are fixedly connected to the side edges of the heat exchange fins. An installation frame is arranged on the cross frame, and the installation frame is slidably arranged on the cross frame. A first driving member is arranged on the cross frame for driving the installation frame to slide into the gap between adjacent heat exchange fins; An attachment is arranged inside the installation frame, and the attachment is used to adsorb impurities in adjacent heat exchangers. The installation frame slides along the length direction of the cross frame, and a second driving member is arranged on the cross frame for driving the installation frame to slide along the length direction of the cross frame.

[0007] Optionally, the attachment includes a first airbag arranged inside the installation frame. The four sides of the first airbag are fixedly arranged on the inner frame of the installation frame. The attachment further includes an attachment sheet coated on the surface of the first airbag, and an attachment glue is arranged on the attachment sheet. The attachment further includes a first air pump arranged on the installation frame, and the first air pump is communicated with the first airbag.

[0008] Optionally, a cleaning roller is provided at the bottom of the mounting frame. The cleaning roller is rotatably arranged at the bottom of the mounting frame, and the rotation axis of the cleaning roller is perpendicular to the length direction of the cross frame. A cleaning brush is provided on the peripheral wall of the cleaning roller, and a driving motor for driving the cleaning roller to rotate is provided at the bottom of the mounting frame.

[0009] Optionally, the cleaning roller includes a main shaft and a second airbag sleeved on the main shaft. The main shaft is coaxially arranged on the output shaft of the driving motor, the cleaning brush is fixedly arranged on the second airbag, and a second air pump is arranged in the main shaft. The second air pump is communicated with the second airbag.

[0010] Optionally, guide blocks are provided at the bottom of the mounting frame. The guide blocks are triangular, and there are two guide blocks. The cleaning roller is located between the two guide blocks, and the distance from the tip of the guide block to the mounting frame is greater than the diameter of the cleaning roller.

[0011] Optionally, the clamping plate is slidably arranged on the cross frame. The clamping plate slides along the length direction of the cross frame, and a third driving member for driving the clamping plate to slide and drive the heat exchange fins to slide and press against the first airbag is arranged on the cross frame.

[0012] Optionally, scrapers are provided inside the mounting frame and on both sides of the first airbag respectively. The end of the scraper abuts against the first airbag. The scraper is located at the inner ring bottom of the mounting frame. The scraper is slidably arranged in the inner ring of the mounting frame. The scraper slides along the height direction of the mounting frame, and a fourth driving member for driving the scraper to slide and scrape the adhering sheet is arranged inside the mounting frame.

[0013] Optionally, the end face of the scraper abutting against the first airbag is inclined and fits on the surface of the first airbag.

[0014] Optionally, a material box is provided at the bottom of the outer ring of the mounting frame. The adhering glue is located in the material box. A spraying pipe is provided on the scraper. The spraying pipe is communicated with the material box. There are multiple spraying pipes and they are evenly arranged along the length direction of the scraper. A conveying pump is arranged in the material box. The conveying pump extracts the adhering glue and sprays it on the first airbag.

[0015] Optionally, the outlet end of the spraying pipe is flat and parallel to the first airbag.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. After the heat exchanger has been used for a long time, first adjust the position of the installation frame through the second driving member so that the installation frame is facing the gap between adjacent heat exchange fins. Then, drive the installation frame into the gap between adjacent heat exchange fins through the first driving member. After the installation frame enters the gap between the heat exchange fins, under the action of the adhering member, the impurities on the surface of the heat exchanger are adsorbed. Then, drive the installation frame out of the gap between the heat exchange fins through the first driving member, thereby removing the impurities to improve the heat exchange efficiency of the heat exchanger. And under the action of the second driving member, it is convenient to adjust the position of the installation frame to clean all the heat exchange fins, further improving the heat exchange efficiency of the heat exchanger. Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of a plate heat exchanger according to an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of the structure of the installation frame in a plate heat exchanger according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of the structure of the adhering member in a plate heat exchanger according to an embodiment of the present application;

[0021] Figure 4 is a cross-sectional view of the installation frame in a plate heat exchanger according to an embodiment of the present application.

[0022] Description of the reference numerals: 1, horizontal frame; 2, clamping plate; 3, heat exchange fin; 4, side guide rail; 5, installation frame; 6, electric push rod; 7, adhering member; 71, first airbag; 72, adhering piece; 73, first air pump;

[0023] 8, cleaning roller; 81, main shaft; 82, second airbag;

[0024] 9, cleaning brush; 10, driving motor; 11, guiding block; 12, first push rod; 13, scraper; 14, first motor; 15, lead screw; 16, material box; 17, spraying pipe. Detailed Description of the Embodiment

[0025] The following will Figures 1-4 further describe the present application in detail with reference to the attached

[0026] An embodiment of the present application discloses a plate heat exchanger. Refer to Figure 1 、 Figure 2 and Figure 3, the plate heat exchanger includes a cross frame 1. A clamping plate 2 is arranged on the lower surface of the cross frame 1. The clamping plates 2 are distributed on both sides of the cross frame 1. A plurality of groups of heat exchange fins 3 are fixedly connected between the clamping plates 2. Each group of heat exchange fins 3 abuts against each other. A plurality of groups of side guide rails 4 are fixedly installed on both sides of the clamping plate 2. The side guide rails 4 are fixedly connected to the side edges of the heat exchange fins 3. The side guide rails 4 clamp the heat exchange fins 3 therebetween to fix the heat exchange fins 3. An installation frame 5 is arranged on the cross frame 1. The installation frame 5 is slidably arranged on the cross frame 1. A first driving member is arranged on the cross frame 1 for driving the installation frame 5 to slide into the gap between adjacent heat exchange fins 3; An attachment member 7 is arranged in the installation frame 5. The attachment member 7 is used to adsorb impurities in the adjacent heat exchanger. The installation frame 5 slides along the length direction of the cross frame 1. A second driving member is arranged on the cross frame 1 for driving the installation frame 5 to slide along the length direction of the cross frame 1.

[0027] After the heat exchanger is used for a long time, first, the position of the installation frame 5 is adjusted by the second driving member so that the installation frame 5 is aligned with the gap between adjacent heat exchange fins 3. Then, the installation frame 5 is driven into the gap between adjacent heat exchange fins 3 by the first driving member. After the installation frame 5 enters the gap between the heat exchange fins 3, under the action of the attachment member 7, the impurities on the surface of the heat exchanger are adsorbed. Then, the installation frame 5 is driven out of the gap between the heat exchange fins 3 by the first driving member, thereby removing the impurities to improve the heat exchange efficiency of the heat exchanger; And under the action of the second driving member, it is convenient to adjust the position of the installation frame 5 to clean all the heat exchange fins 3, further improving the heat exchange efficiency of the heat exchanger.

[0028] Refer to Figure 1 , in the embodiment of the present application, the second driving member includes a rodless cylinder arranged on the lower surface of the cross frame 1. The installation frame 5 is arranged on the moving part of the rodless cylinder; Further, the first driving member includes an electric push rod 6 fixedly arranged on the moving part of the rodless cylinder. The installation frame 5 is fixedly arranged on the output shaft of the electric push rod 6.

[0029] Refer to Figure 3 , in the embodiment of the present application, the attachment member 7 includes a first airbag 71 arranged in the installation frame 5. The four sides of the first airbag 71 are fixedly arranged in the inner frame of the installation frame 5. The first airbag 71 expands along both sides of the installation frame 5. The attachment member 7 further includes an attachment sheet 72 coated on the surface of the first airbag 71. An attachment glue is arranged on the attachment sheet 72. The attachment member 7 further includes a first air pump 73 arranged on the installation frame 5. The first air pump 73 is communicated with the first airbag 71. When the installation frame 5 enters the gap between the heat exchange fins 3, the first air pump 73 is started. The first air pump 73 inflates the first airbag 71. The first airbag 71 expands to drive the attachment glue to move towards the heat exchange fins 3 and abut against the heat exchange channels of the heat exchange fins 3. The attachment glue bonds the impurities to the adhesion sheet, and then the impurities are removed through the installation frame 5. The operation is simple and convenient; And under the action of the first airbag 71, it is convenient for the adhesion glue to fully contact the surface of the heat exchange fins 3 to remove impurities.

[0030] Reference Figure 4 To improve the cleaning effect on the surface of the heat exchange fin 3, a cleaning roller 8 is provided at the bottom of the mounting frame 5. The cleaning roller 8 is rotatably arranged at the bottom of the mounting frame 5, and the rotation axis of the cleaning roller 8 is perpendicular to the length direction of the cross frame 1. A cleaning brush 9 is arranged on the peripheral wall of the cleaning roller 8, and a driving motor 10 for driving the cleaning roller 8 to rotate is arranged at the bottom of the mounting frame 5; when the mounting frame 5 enters the gap between the heat exchange fins 3, the driving motor 10 is started, and the driving motor 10 drives the cleaning roller 8 to rotate. The rotation of the cleaning roller 8 drives the cleaning brush 9 to rotate, and the surface of the heat exchange fin 3 is scraped, and the impurities after scraping fall through the lower part.

[0031] Reference Figure 4 To improve the cleaning effect of the cleaning roller 8 on the heat exchange fin 3, the cleaning roller 8 includes a main shaft 81 and a second airbag 82 sleeved on the main shaft 81. The second airbag 82 is annular and sleeved on the main shaft 81. The main shaft 81 is coaxially arranged on the output shaft of the driving motor 10. The cleaning brush 9 is fixedly arranged on the second airbag 82, and a second air pump is arranged in the main shaft 81. The second air pump is communicated with the second airbag 82. After the cleaning roller 8 enters between the heat exchange fins 3, the second air pump is started, and the second air pump causes the second airbag 82 to expand. The expansion of the second airbag 82 drives the cleaning brush 9 to move towards the heat exchange fin 3, which is convenient for scraping the impurities on the heat exchange fin 3.

[0032] Reference Figure 4 To facilitate the mounting frame 5 to enter between the heat exchange fins 3, a guiding block 11 is fixedly arranged at the bottom of the mounting frame 5. The guiding block 11 is triangular and is an isosceles or equilateral triangle. There are two guiding blocks 11, and the cleaning roller 8 is located between the two guiding blocks 11. The distance from the tip of the guiding block 11 to the mounting frame 5 is greater than the diameter of the cleaning roller 8; when the mounting frame 5 enters the gap between the heat exchange fins 3, the guiding block 11 pushes open the adjacent heat exchange fins 3, which is convenient for the mounting frame 5 to enter between the heat exchange fins 3.

[0033] Reference Figure 1 In the embodiment of the present application, the clamping plate 2 is slidably arranged on the cross frame 1. The clamping plate 2 slides along the length direction of the cross frame 1. A third driving member for driving the clamping plate 2 to slide to drive the heat exchange fin 3 to slide and press against the first airbag 71 is arranged on the cross frame 1. The third driving member includes a first push rod 12 arranged on the cross frame 1, and the clamping plate 2 is fixedly arranged on the output shaft of the first push rod 12; the first push rod 12 drives the clamping plate 2 to slide to release the heat exchange fin 3. When the mounting frame 5 enters between the heat exchange fins 3, the first push rod 12 pushes the clamping plate 2 to drive the heat exchange fins 3 to approach each other, which is convenient for the first airbag 71 to be inflated and spread on the surface of the heat exchange fin 3.

[0034] Reference Figure 3 and Figure 4, in the embodiment of the present application, scrapers 13 are provided on both sides of the first airbag 71 inside the installation frame 5. The end of the scraper 13 abuts against the first airbag 71. The scraper 13 is located at the inner bottom of the installation frame 5. The scraper 13 is slidably arranged inside the installation frame 5. The scraper 13 slides along the height direction of the installation frame 5. A fourth driving member is provided inside the installation frame 5 for driving the scraper 13 to slide and scrape the adhering piece 72. Further, an installation groove is formed in the vertical side frame of the inner ring of the installation frame 5, and the edge of the first airbag 71 is fixedly installed in the installation groove. The fourth driving member includes a first motor 14 arranged in the installation groove. A lead screw 15 is arranged on the output shaft of the first motor 14. The scraper 13 is threadedly connected to the lead screw 15. After the installation frame 5 is removed from between the heat exchange fins 3, the first motor 14 is started. The first motor 14 drives the lead screw 15 to rotate. The rotation of the lead screw 15 drives the scraper 13 to move. The movement of the scraper 13 scrapes the impurities on the surface of the first airbag 71, thereby facilitating the cleaning of the heat exchange fins 3 in the next stage.

[0035] Refer to Figure 3 and Figure 4 , to improve the scraping effect of the scraper 13 on the first airbag 71, the end surface of the scraper 13 abutting against the first airbag 71 is inclined and fits on the surface of the first airbag 71.

[0036] Refer to Figure 4 , in the embodiment of the present application, a material box 16 is provided at the bottom of the outer ring of the installation frame 5. The adhering glue is in liquid form and is located in the material box 16. A spraying pipe 17 is provided on the scraper 13. The spraying pipe 17 is communicated with the material box 16. A plurality of spraying pipes 17 are provided and are evenly arranged along the length direction of the scraper 13. A delivery pump is provided in the material box 16. The delivery pump extracts the adhering glue and sprays it on the first airbag 71. When the scraper 13 scrapes the first airbag 71, the delivery pump is started. The delivery pump extracts the adhering glue and sprays it on the adhering plate, thereby improving the adhering effect on the impurities on the surface of the heat exchange fins 3.

[0037] Refer to Figure 4 , further, the outlet end of the spraying pipe 17 is flat-mouthed and parallel to the first airbag 71. The flat-mouthed spraying pipe 17 improves the spraying range of the adhering glue and reduces the number of spraying pipes 17 invested.

[0038] The implementation principle of a plate heat exchanger in the embodiment of the present application is:

[0039] After the heat exchanger has been used for a long time, first, the position of the mounting frame 5 is adjusted by the rodless cylinder so that the mounting frame 5 faces the gap between adjacent heat exchange fins 3. Then, the mounting frame 5 is driven into the gap between adjacent heat exchange fins 3 by the electric push rod 6. After the mounting frame 5 enters the gap between the heat exchange fins 3, under the action of the first airbag 71 and the adhesive, the impurities on the surface of the heat exchanger are adsorbed. Then, the mounting frame 5 is driven out of the gap between the heat exchange fins 3 by the electric push rod 6, thereby removing the impurities to improve the heat exchange efficiency of the heat exchanger. And under the action of the rodless cylinder, it is convenient to adjust the position of the mounting frame 5 to clean all the heat exchange fins 3, further improving the heat exchange efficiency of the heat exchanger.

[0040] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A plate heat exchanger, characterized in that: It includes a cross frame (1), on the lower surface of the cross frame (1), there are clamping plates (2) arranged, the clamping plates (2) are distributed on both sides of the cross frame (1), between the clamping plates (2), there are multiple groups of heat exchange fins (3) fixedly connected, each group of heat exchange fins (3) abuts against each other, on both sides of the clamping plates (2), multiple groups of side guide rails (4) are fixedly installed, the side guide rails (4) are fixedly connected to the side edges of the heat exchange fins (3), on the cross frame (1), there is an installation frame (5), the installation frame (5) is slidably arranged on the cross frame (1), on the cross frame (1), there is a first driving member for driving the installation frame (5) to slide into the gap between adjacent heat exchange fins (3); inside the installation frame (5), there is an adhering member (7), the adhering member (7) is used for adsorbing impurities in adjacent heat exchangers, the installation frame (5) slides along the length direction of the cross frame (1), on the cross frame (1), there is a second driving member for driving the installation frame (5) to slide along the length direction of the cross frame (1); the adhering member (7) includes a first airbag (71) arranged inside the installation frame (5), the periphery of the first airbag (71) is fixedly arranged on the inner frame of the installation frame (5), the adhering member (7) further includes an adhering sheet (72) coated on the surface of the first airbag (71), there is an adhering glue on the adhering sheet (72), the adhering member (7) further includes a first air pump (73) arranged on the installation frame (5), the first air pump (73) is communicated with the first airbag (71). At the bottom of the installation frame (5), there is a cleaning roller (8), the cleaning roller (8) is rotatably arranged at the bottom of the installation frame (5), the rotation axis of the cleaning roller (8) is perpendicular to the length direction of the cross frame (1), on the peripheral wall of the cleaning roller (8), there is a cleaning brush (9), at the bottom of the installation frame (5), there is a driving motor (10) for driving the cleaning roller (8) to rotate. The cleaning roller (8) includes a main shaft (81) and a second airbag (82) sleeved on the main shaft (81), the main shaft (81) is coaxially arranged on the output shaft of the driving motor (10), the cleaning brush (9) is fixedly arranged on the second airbag (82), inside the main shaft (81), there is a second air pump, and the second air pump is communicated with the second airbag (82).

2. The plate heat exchanger according to claim 1, wherein: At the bottom of the installation frame (5), there are guide blocks (11), the guide blocks (11) are triangular, there are two guide blocks (11), the cleaning roller (8) is located between the two guide blocks (11), and the distance from the tip of the guide block (11) to the installation frame (5) is greater than the diameter of the cleaning roller (8).

3. A plate heat exchanger according to claim 1, characterized in that: The clamping plate (2) is slidably arranged on the cross frame (1), the clamping plate (2) slides along the length direction of the cross frame (1), on the cross frame (1), there is a third driving member for driving the clamping plate (2) to slide to drive the heat exchange fins (3) to slide and press against the first airbag (71).

4. A plate heat exchanger according to claim 1, characterized in that: Scrapers (13) are provided inside the mounting frame (5) and on both sides of the first airbag (71) respectively. The end of the scraper (13) abuts against the first airbag (71). The scraper (13) is located at the bottom of the inner ring of the mounting frame (5). The scraper (13) is slidably arranged in the inner ring of the mounting frame (5). The scraper (13) slides along the height direction of the mounting frame (5). A fourth driving member is provided in the mounting frame (5) for driving the scraper (13) to slide and scrape the adhering sheet (72).

5. A plate heat exchanger according to claim 4, characterized in that: The end face of the scraper (13) abutting against the first airbag (71) is inclined and fits on the surface of the first airbag (71).

6. A plate heat exchanger according to claim 4, characterized in that: A material box (16) is provided at the bottom of the outer ring of the mounting frame (5). The adhering glue is located in the material box (16). A spraying pipe (17) is provided on the scraper (13). The spraying pipe (17) is communicated with the material box (16). A plurality of spraying pipes (17) are provided and are evenly arranged along the length direction of the scraper (13). A delivery pump is provided in the material box (16). The delivery pump extracts the adhering glue and sprays it on the first airbag (71).

7. A plate heat exchanger according to claim 6, characterized in that: The outlet end of the spraying pipe (17) is flat and parallel to the first airbag (71).

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