Easy-to-clean drying filter for refrigeration equipment

Abstract

The invention belongs to the technical field of dry filters, and particularly relates to an easy-to-clean dry filter for refrigeration equipment, the easy-to-clean dry filter comprises a shell, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are mounted on two sides of the shell, two convex plates are mounted in the shell, mesh plates I are slidably mounted on the two convex plates respectively, spacer sleeves are mounted on the mesh plates I, and the spacer sleeves are mounted on the mesh plates II; the area between the two protruding plates is divided into a transmission cavity and a drying cavity through the spacer sleeve, and a speed reduction tooth set is installed in the transmission cavity and connected with the first mesh plate. After the air cylinder is started, under the condition that a sliding rod on the second mesh plate is in sliding fit with a chute, the first mesh plate drives the second mesh plate to rotate, so that through holes in the second mesh plate gradually coincide with through holes in the first mesh plate, the flow speed of a refrigerant passing through the second mesh plate and the first mesh plate is increased, and meanwhile, under the action of a speed reduction tooth set, the refrigerant is prevented from falling off. And the space between the drying cavities is gradually increased, so that the refrigerant passes through each part of the drying agent, and small pulverized particles of the drying agent are brought out.

Description

Technical Field

[0001] The present invention belongs to the technical field of drying filters, and particularly relates to a drying filter for a refrigeration device that is easy to clean. Background Art

[0002] The refrigerant undergoes a cycle of gas - liquid - gas in the refrigeration system. In the liquid phase, it may dissolve some moisture and impurities, and the drying filter can remove these dissolved substances. For example, when the refrigerant liquid passes through the drying filter, desiccants such as molecular sieves in it can adsorb moisture, and materials such as silica gel can filter out tiny impurity particles, preventing these substances from entering the throttling device (such as a capillary tube or an expansion valve) with the refrigerant and causing problems such as blockage.

[0003] The following problems exist during the use of the drying filter; First, the desiccant in the drying filter will be affected by the scouring of the refrigerant. The desiccant may become pulverized, and the pulverized desiccant particles may enter other components of the refrigeration system with the refrigerant, exacerbating the wear of the components. For example, some silica gel desiccants may gradually break into small particles under the long - term impact of the refrigerant flow.

[0004] Second, under certain temperature and humidity conditions, the desiccant may absorb a certain amount of moisture and agglomerate, and the agglomerated desiccant will seriously affect its adsorption performance. For example, in a humid environment, after the silica gel desiccant adsorbs moisture on its surface, the particles may adhere to each other to form lumps. Summary of the Invention

[0005] The purpose of the present invention is to provide a drying filter for a refrigeration device that is easy to clean to solve the technical problems in the prior art in view of the deficiencies of the prior art.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A drying filter for a refrigeration device that is easy to clean, which includes a housing and a liquid inlet and a liquid outlet installed on both sides of the housing. Two convex plates are installed inside the housing. Mesh plates I are slidably installed on the two convex plates respectively. A retaining sleeve is installed on the mesh plate I, and the retaining sleeves cooperate with each other. The retaining sleeves divide the area between the two convex plates into a transmission cavity and a drying cavity. A reduction gear set is installed in the transmission cavity, and the reduction gear set is connected to the mesh plate I. The drying cavity is filled with desiccant; A cylinder is installed on the housing, the output end of the cylinder is connected to a ring plate, the ring plate is connected to the mesh plate I, a conical filter screen is installed inside the housing, and the conical filter screen is arranged near the liquid outlet end. An aggregate box that opens and closes with the movement of the mesh plate I is installed at the central position of the conical filter screen.

[0007] As a further optimization or improvement of this solution, the speed reduction gear set includes a speed reduction box. A first rack and a second rack are respectively installed on the first mesh plate. The first rack is engaged with the second rack through a first gear and a second gear.

[0008] As a further optimization or improvement of this solution, a second mesh plate is respectively rotatably installed on the first mesh plate. A rotating groove is opened on the first mesh plate. A sliding rod is installed on the second mesh plate. An inclined groove is installed on the inner wall of the housing. The sliding rod passes through the rotating groove and is in sliding fit with the inclined groove.

[0009] As a further optimization or improvement of this solution, a connecting rod is installed on the first mesh plate. A straight groove and an annular groove are respectively opened in the aggregate box. A stacked plate is installed in the aggregate box. A slider is installed on the central axis of the stacked plate. The slider is in sliding fit with the straight groove. The connecting rod is connected to the central axis of the stacked plate. Side blocks are respectively installed on both sides of the stacked plate. An expansion rod is installed on the side block. The output end of the expansion rod is connected with a ball head. The ball head is in sliding fit with the annular groove.

[0010] As a further optimization or improvement of this solution, sealing rings are respectively installed on the liquid inlet and the liquid outlet.

[0011] As a further optimization or improvement of this solution, both sides of the annular plate are connected to the housing through sealing members.

[0012] As a further optimization or improvement of this solution, a guide rod is installed on the first mesh plate. The first mesh plate is in sliding fit with the convex plate through the guide rod.

[0013] Advantages of the present invention: (1) In the present invention, the cylinder drives one of the first mesh plates to move through the annular plate. The first mesh plate drives the second rack to move synchronously. The second rack drives the first rack to move at a reduced speed through the second gear and the first gear. The first rack drives the other first mesh plate to move synchronously. At this time, there is a speed difference between the two first mesh plates, so that the space between the drying chambers gradually increases, reserving space for the desiccant in the drying chamber to absorb moisture and expand, avoiding the adhesion of the desiccant due to expansion, and reducing the caking of the desiccant; when the two first mesh plates move, the two first mesh plates drive the desiccant in the drying chamber to move synchronously, ensuring the integrity of the desiccant and avoiding the dispersion of the desiccant.

[0014] (2) Before the cylinder of the present invention is started, the through holes on the second mesh plate are staggered with the through holes on the first mesh plate. At this time, the flow rate of the refrigerant passing through the second mesh plate and the first mesh plate is reduced. When the refrigerant enters the drying chamber through the second mesh plate and the first mesh plate, the impact of the refrigerant on the desiccant inside the drying chamber can be slowed down, reducing the pulverization of the desiccant; When the cylinder of the present invention is started, the cylinder drives the mesh plate 1 to move through the ring plate. When the slide bar on the mesh plate 2 slides with the inclined groove, the mesh plate 1 drives the mesh plate 2 to rotate, so that the through holes on the mesh plate 2 gradually overlap with the through holes of the mesh plate 1, thereby increasing the flow rate of the refrigerant passing through the mesh plate 2 and the mesh plate 1. At the same time, under the action of the reduction gear group, the space between the drying chambers gradually increases, so that the refrigerant passes through various parts of the desiccant, takes out the small particles of the desiccant powder, and collects them through the conical filter screen and the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the internal overall structure of the present invention.

[0018] Figure 3 It is a front view of the internal overall structure of the present invention.

[0019] Figure 4 for Figure 3 Schematic diagram of the A part structure.

[0020] Figure 5 Schematic diagram of the conical filter structure.

[0021] Figure 6 for Figure 5 Schematic diagram of the structure of part B.

[0022] Figure 7 This is a matching diagram of the shell and the mesh plate.

[0023] Figure 8 Schematic diagram of the chute structure.

[0024] Figure 9 This is the coordination diagram of mesh plate 1 and mesh plate 2.

[0025] Figure 10 Schematic diagram of the location for the transfer slot.

[0026] Figure 11 It is a schematic diagram of the structure of mesh plate 2.

[0027] The labels in the figure are: 1. housing; 2. liquid inlet; 3. liquid outlet; 4. reduction gear set; 401. reduction gearbox; 402. first rack; 403. first gear; 404. second gear; 405. second rack; 5. cylinder; 6. ring plate; 7. convex plate; 8. first perforated plate; 9. second perforated plate; 10. guide rod; 11. transmission cavity; 12. drying cavity; 13. retaining sleeve; 14. seal; 15. conical filter screen; 16. sealing ring; 17. inclined groove; 18. rotating groove; 19. sliding rod; 20. aggregate box; 21. connecting rod; 22. laminated plate; 23. slider; 24. side block; 25. telescopic rod; 26. ball head; 27. straight groove; 28. annular groove. Detailed implementation manner

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] See Figures 1-8 , a drying filter for a refrigeration device that is easy to clean, which includes a housing 1 and a liquid inlet 2 and a liquid outlet 3 installed on both sides of the housing 1. Two convex plates 7 are installed in the housing 1, and a first perforated plate 8 is slidably installed on each of the two convex plates 7. A retaining sleeve 13 is installed on the first perforated plate 8, and the retaining sleeves 13 cooperate with each other. The retaining sleeve 13 divides the area between the two convex plates 7 into a transmission cavity 11 and a drying cavity 12. A reduction gear set 4 is installed in the transmission cavity 11, and the reduction gear set 4 is connected to the first perforated plate 8. The drying cavity 12 is filled with a desiccant; a cylinder 5 is installed on the housing 1, the output end of the cylinder 5 is connected to a ring plate 6, the ring plate 6 is connected to the first perforated plate 8, a conical filter screen 15 is installed in the housing 1, and the conical filter screen 15 is arranged near one end of the liquid outlet 3. An aggregate box 20 that moves and opens and closes with the first perforated plate 8 is installed at the center position of the conical filter screen 15.

[0030] Specifically, a connecting rod 21 is installed on the first perforated plate 8. A straight groove 27 and an annular groove 28 are respectively formed in the aggregate box 20. A laminated plate 22 is installed in the aggregate box 20. A slider 23 is installed on the central axis of the laminated plate 22. The slider 23 is slidably matched with the straight groove 27. The connecting rod 21 is connected to the central axis of the laminated plate 22. Side blocks 24 are respectively installed on both sides of the laminated plate 22. A telescopic rod 25 is installed on the side block 24. The output end of the telescopic rod 25 is connected to a ball head 26. The ball head 26 is slidably matched with the annular groove 28.

[0031] Specifically, a guide rod 10 is installed on the first perforated plate 8. The first perforated plate 8 is slidably matched with the convex plate 7 through the guide rod 10.

[0032] It should be noted that the area between the two convex plates 7 is a drying area, and the refrigerant is dried through this area. The first perforated plate 8 is provided in two groups, and the first perforated plate 8 is slidably matched with the convex plate 7 respectively. A filter screen is further provided in the housing 1 for filtering large particle impurities in the refrigerant. The filter screen is arranged at a position close to the liquid inlet 2. This filter screen is a prior art, and the present invention will not elaborate on it, and it does not affect the creativity of the present invention.

[0033] It should be noted that through holes may be formed at the bottom of the aggregate box 20, and the purpose is to prevent particulate matter from flowing back with the refrigerant from the aggregate box 20 when collecting the pulverized small particles of the desiccant. The laminated plate 22 is composed of a central axis and two plates connected to the central axis. When the first perforated plate 8 moves, the first perforated plate 8 pushes the central axis of the laminated plate 22 into the interior of the aggregate box 20 through the connecting rod 21, causing the two plates of the laminated plate 22 to fold, thereby opening the aggregate box 20 and realizing the opening of the aggregate box 20 along with the movement of the first perforated plate 8; when the first perforated plate 8 resets, similarly, the aggregate box 20 closes.

[0034] When the present invention is in use, the liquid inlet 2 and the liquid outlet 3 are connected to the refrigeration system through the sealing ring 16, and the refrigerant enters the housing 1 through the liquid inlet 2. When the refrigerant passes through the drying chamber 12, the desiccant filled in the drying chamber 12 adsorbs the moisture in the refrigerant; the air cylinder 5 is started, and the air cylinder 5 pushes one of the first perforated plates 8 to move through the ring plate 6. Refer to Figure 4 , the first perforated plate 8 drives the second rack 405 to move synchronously. The second rack 405 drives the first rack 402 to move at a reduced speed through the second gear 404 and the first gear 403, and the first rack 402 drives the other first perforated plate 8 to move synchronously. At this time, there is a speed difference between the two first perforated plates 8, so that the space between the drying chambers 12 gradually increases, reserving space for the desiccant in the drying chamber 12 to absorb moisture and expand, avoiding the adhesion of the desiccant due to expansion and reducing the caking of the desiccant; when the two first perforated plates 8 move, the two first perforated plates 8 drive the desiccant in the drying chamber 12 to move synchronously, ensuring the integrity of the desiccant and avoiding the dispersion of the desiccant.

[0035] During the movement of the first perforated plate 8, refer to Figure 6 , the first perforated plate 8 pushes the central axis of the laminated plate 22 to move into the aggregate box 20 along the straight groove 27 through the connecting rod 21. At this time, under the condition that the ball head 26 is slidably matched with the ring groove 28, the laminated plate 22 starts to fold, and at the same time the telescopic rod 25 extends to ensure the cooperation between the ball head 26 and the ring groove 28. As the laminated plate 22 folds, the aggregate box 20 opens, and the pulverized small particles of the desiccant are concentrated towards the aggregate box 20 when passing through the conical filter screen 15 and are collected by the aggregate box 20.

[0036] Refer to Figures 3-4, the speed reduction gear set 4 includes a speed reduction box 401. A first rack 402 and a second rack 405 are respectively installed on the first mesh plate 8. The first rack 402 is meshed with the second rack 405 through a first gear 403 and a second gear 404.

[0037] It should be noted that since there are two sets of the first mesh plates 8 and the first mesh plates 8 are connected by the speed reduction gear set 4, when the air cylinder 5 drives one set of the first mesh plates 8 to move through the ring plate 6, the first mesh plates 8 drive the other set of the first mesh plates 8 to move at a reduced speed through the speed reduction gear set 4, so that the lateral space between the drying chambers 12 slowly increases, reserving space for the desiccant inside the drying chamber 12 to absorb moisture and expand, and avoiding the desiccant from swelling and sticking.

[0038] See Figures 7-11 , second mesh plates 9 are respectively rotatably installed on the first mesh plates 8. Rotating grooves 18 are formed on the first mesh plates 8. Slide rods 19 are installed on the second mesh plates 9. Oblique grooves 17 are installed on the inner wall of the housing 1. The slide rods 19 pass through the rotating grooves 18 and are in sliding fit with the oblique grooves 17.

[0039] It should be noted that in the initial state, that is, before the air cylinder 5 is started, the through holes on the second mesh plates 9 are staggered with the through holes on the first mesh plates 8. At this time, the flow rate of the refrigerant passing through the second mesh plates 9 and the first mesh plates 8 is reduced. When the refrigerant enters the drying chamber 12 through the second mesh plates 9 and the first mesh plates 8, the impact of the refrigerant on the desiccant inside the drying chamber 12 can be slowed down, and the phenomenon of desiccant pulverization can be reduced; After the air cylinder 5 is started, the air cylinder 5 drives the first mesh plates 8 to move through the ring plate 6. When the slide rods 19 on the second mesh plates 9 are in sliding fit with the oblique grooves 17, the first mesh plates 8 drive the second mesh plates 9 to rotate, so that the through holes on the second mesh plates 9 gradually coincide with the through holes on the first mesh plates 8, increasing the flow rate of the refrigerant passing through the second mesh plates 9 and the first mesh plates 8. At the same time, under the action of the speed reduction gear set 4, the space between the drying chambers 12 gradually increases, enabling the refrigerant to pass through each part of the desiccant, taking out the small pulverized particles of the desiccant, and collecting them through the conical filter screen 15 and the aggregate box 20.

[0040] Due to the speed difference between the two first mesh plates 8, see Figure 3 , the second mesh plate 9 closer to the liquid inlet 2 rotates slower, and the second mesh plate 9 closer to the liquid outlet 3 rotates faster. Therefore, the through holes on the second mesh plate 9 closer to the liquid inlet 2 coincide with the through holes on the first mesh plate 8 at a slower speed, and the through holes on the second mesh plate 9 closer to the liquid outlet 3 coincide with the through holes on the first mesh plate 8 at a faster speed, so that the impact force of the refrigerant passing through the first mesh plate 8 and the second mesh plate 9 on the desiccant inside the drying chamber 12 increases slowly, reducing the influence of the increased impact force on the desiccant.

[0041] See Figure 1 , sealing rings 16 are respectively installed on the liquid inlet 2 and the liquid outlet 3.

[0042] It should be noted that the purpose of disposing the sealing ring 16 is to enhance the sealing performance between the shell 1 and the refrigeration system and prevent external air from entering the shell 1 .

[0043] See also Figures 2-3 The two sides of the ring plate 6 are connected to the housing 1 through sealing members 14 .

[0044] It should be noted that the ring plate 6 is connected to the housing 1 via the seal 14 to ensure that the interior of the housing 1 is sealed, thereby preventing external water vapor from entering the interior of the housing 1 .

[0045] Working principle of the present invention: When the present invention is used, the liquid inlet 2 and the liquid outlet 3 are connected to the refrigeration system through the sealing ring 16, and the refrigerant enters the shell 1 through the liquid inlet 2. When the refrigerant passes through the drying chamber 12, the desiccant filled in the drying chamber 12 absorbs the moisture in the refrigerant; the cylinder 5 is started, and the cylinder 5 pushes one of the mesh plates 8 to move through the ring plate 6, see Figure 4 , the mesh plate 18 drives the rack 2 405 to move synchronously, the rack 2 405 drives the rack 1 402 to move at a reduced speed through the gear 2 404 and the gear 1 403, and the rack 1 402 drives another mesh plate 8 to move synchronously. At this time, there is a speed difference between the two mesh plates 8, so that the space between the drying chambers 12 is gradually increased, and space is reserved for the moisture absorption and expansion of the desiccant inside the drying chamber 12, so as to avoid the expansion and adhesion of the desiccant and reduce the agglomeration of the desiccant.

[0046] Specifically, in the initial state, that is, before the cylinder 5 is started, the through holes on the mesh plate 2 9 are staggered with the through holes on the mesh plate 1 8. At this time, the refrigerant flow rate through the mesh plate 2 9 and the mesh plate 1 8 is reduced. When the refrigerant enters the drying chamber 12 through the mesh plate 2 9 and the mesh plate 1 8, the impact of the refrigerant on the desiccant inside the drying chamber 12 can be slowed down, reducing the desiccant pulverization phenomenon. When the cylinder 5 is started, the cylinder 5 drives the mesh plate 1 8 to move through the ring plate 6. When the slide bar 19 on the mesh plate 2 9 slides with the inclined groove 17, the mesh plate 1 8 drives the mesh plate 2 9 to rotate, so that the through holes on the mesh plate 2 9 gradually overlap with the through holes of the mesh plate 1 8, thereby increasing the flow rate of the refrigerant passing through the mesh plates 2 9 and 1 8. At the same time, under the action of the reduction gear group 4, the space between the drying chambers 12 gradually increases, so that the refrigerant passes through various parts of the desiccant, takes out the small particles of the desiccant powder, and collects them through the conical filter 15 and the collection box 20.

[0047] In the process of mesh plate 8 moving, see Figure 6, the mesh plate 1 8 pushes the central axis of the stacked plate 22 to move along the straight groove 27 into the aggregate bin 20 through the connecting rod 21. At this time, with the ball head 26 slidingly engaged with the annular groove 28, the stacked plate 22 starts to fold up, and at the same time, the telescopic rod 25 extends to ensure the engagement between the ball head 26 and the annular groove 28. As the stacked plate 22 folds up, the aggregate bin 20 opens, and the small pulverized particles of the desiccant concentrate towards the aggregate bin 20 when passing through the conical filter screen 15 and are collected by the aggregate bin 20.

[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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A drying filter for a refrigeration device that is easy to clean, characterized in that: It includes a housing (1), a liquid inlet (2) and a liquid outlet (3) installed on both sides of the housing (1). Inside the housing (1), two convex plates (7) are installed. On each of the two convex plates (7), a perforated plate one (8) is slidably installed. A retaining sleeve (13) is installed on the perforated plate one (8). The retaining sleeves (13) cooperate with each other. The retaining sleeves (13) divide the area between the two convex plates (7) into a transmission cavity (11) and a drying cavity (12). A reduction gear set (4) is installed in the transmission cavity (11). The reduction gear set (4) is connected to the perforated plate one (8). The drying cavity (12) is filled with a desiccant. A cylinder (5) is installed on the housing (1). The output end of the cylinder (5) is connected to an annular plate (6). The annular plate (6) is connected to the perforated plate one (8). A conical filter screen (15) is installed inside the housing (1), and the conical filter screen (15) is arranged near the liquid outlet (3). An aggregate box (20) that opens and closes with the movement of the perforated plate one (8) is installed at the center of the conical filter screen (15).

2. The dry filter for a refrigeration equipment that is easy to clean according to claim 1, wherein: The reduction gear set (4) includes a reduction box (401). A rack one (402) and a rack two (405) are respectively installed on the perforated plate one (8). The rack one (402) is meshed with the rack two (405) through a gear one (403) and a gear two (404).

3. The dry filter for a refrigeration device that is easy to clean according to claim 1, wherein: Perforated plates two (9) are respectively rotatably installed on the perforated plate one (8). A rotating groove (18) is opened on the perforated plate one (8). A sliding rod (19) is installed on the perforated plate two (9). An inclined groove (17) is installed on the inner wall of the housing (1). The sliding rod (19) passes through the rotating groove (18) and is slidably matched with the inclined groove (17).

4. The dry filter for a refrigeration device that is easy to clean according to claim 1, wherein: A connecting rod (21) is installed on the perforated plate one (8). A straight groove (27) and an annular groove (28) are respectively opened in the aggregate box (20). A laminated plate (22) is installed in the aggregate box (20). A slider (23) is installed on the central axis of the laminated plate (22). The slider (23) is slidably matched with the straight groove (27). The connecting rod (21) is connected to the central axis of the laminated plate (22). Side blocks (24) are respectively installed on both sides of the laminated plate (22). An expansion rod (25) is installed on the side block (24). The output end of the expansion rod (25) is connected to a ball head (26). The ball head (26) is slidably matched with the annular groove (28).

5. The dry filter for a refrigeration device that is easy to clean according to claim 1, wherein: Sealing rings (16) are respectively installed on the liquid inlet (2) and the liquid outlet (3).

6. The dry filter for a refrigeration device that is easy to clean according to claim 1, wherein: Both sides of the annular plate (6) are connected to the housing (1) through sealing members (14).

7. The dry filter for a refrigeration device that is easy to clean according to claim 1, wherein: Guide rods (10) are installed on the perforated plate one (8). The perforated plate one (8) is slidably matched with the convex plate (7) through the guide rods (10).

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