Closed heat pump dryer

Abstract

The utility model discloses a closed heat pump dryer which comprises a heat pump drying unit, an air outlet pipe, a backflow pipeline and an efficient dust removal device. The efficient dust removal device is arranged on the inner side of the backflow pipeline, the driving roller is controlled by the motor to rotate, so that the nylon belt turns over under the guiding action of the driving roller and the driven roller, and dust deposition parts on the dust filtering meshes can move downwards to enter the inner side of the cleaning box; when the dust filtering meshes pass through the cleaning box, the dust filtering meshes can be attached to the surfaces of the dust filtering meshes to be scraped and swept, swept dust impurities can fall into the dust collection drawers to be collected in a centralized mode, a user only needs to take out the dust collection drawers regularly to clean the dust collection drawers, the efficient dust removal device can achieve automatic cleaning, and blockage caused by dust accumulation is avoided; and the manual workload is reduced, and the dustproof function of the drying unit is further optimized.

Description

Technical Field

[0001] The utility model relates to the relevant field of heat pump dryers, in particular to a closed heat pump dryer. Background Art

[0002] Closed heat pump dryers are usually used to provide heating for the drying room. The hot air will circulate between the dryer and the drying room, which has the advantages of high thermal efficiency and low energy consumption.

[0003] Existing patent application number: CN202322035862.5 A closed air source heat pump, including a body, with a control panel fixed on the body; a return air outlet is opened on the body, and a heat recovery core and an evaporator are fixed in the body in an offset distribution, the heat recovery core is located near the return air outlet, and a cold air pipe connected to the interior of the evaporator is fixed at the cold air end of the evaporator, the cold air pipe is fixed on the heat recovery core and connected to the interior, the evaporator is electrically connected to the control panel, the heat recovery core includes a frame, a heat exchange pipe and an air guide component, both ends of the frame are closed ends, and the outer periphery is open ends; the beneficial effects of the utility model are: heat recovery is realized, which can greatly reduce heat energy loss, the heat recovery effect is good, and the air in the baking room can be dehumidified.

[0004] The above patent records a closed air source heat pump. In actual application, hot air will return to the closed heat pump through the return duct, thereby realizing heat recovery. However, dust and impurities in the drying room can easily enter the heat pump body through the return duct, which can easily cause failures and reduce the life of the equipment. Installing a dust net can reduce the amount of dust entering, but after a period of use, dust will accumulate on the surface of the dust net. If it is not cleaned in time, the air volume of the return duct will be reduced, affecting the drying efficiency. The dust removal device of the return duct in the closed heat pump can be improved to solve the above problem. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a closed heat pump drying machine.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a closed heat pump dryer, comprising a heat pump dryer unit, an air outlet duct, a return duct and a high-efficiency dust removal device, wherein the heat pump dryer unit is connected to an air outlet duct at the rear, and the heat pump dryer unit is connected to a return duct at the top, and a high-efficiency dust removal device is arranged inside the return duct, and the high-efficiency dust removal device comprises a cleaning box, a driving roller, a motor, a driven roller, a nylon belt, a dust filter mesh, a bracket, a scraping brush and a dust collecting drawer, a cleaning box is riveted and installed at the bottom of the return duct, a driving roller is horizontally arranged at the middle of the inner side of the cleaning box, and the left and right ends of the driving roller are rotatably connected to the inner wall of the cleaning box, and a motor is installed on the right side of the outside of the cleaning box , and the motor output shaft is connected to the driving roller, a driven roller is horizontally arranged on the top of the inner side of the reflux duct, and the left and right ends of the driven roller are rotatably connected to the inner wall of the reflux duct, the upper end of the nylon belt is sleeved on the outer surface of the driven roller, and the lower end of the nylon belt passes through the bottom opening of the reflux duct and extends into the cleaning box and is sleeved on the outer surface of the driving roller, and the driving roller establishes a transmission connection with the driven roller through the nylon belt, and a dust filter mesh is arranged in the middle area of ​​the nylon belt, a bracket is screwed on the front side wall of the cleaning box, a scraping brush is installed on the rear end of the bracket, and the scraping brush is attached to the surface of the nylon belt, and a dust collecting drawer is arranged on the bottom of the inner side of the cleaning box, and the dust collecting drawer can be slid outward through the rear opening of the cleaning box.

[0007] Preferably, the dust filter mesh accounts for no less than 80% of the longitudinal cross-sectional area in the return duct.

[0008] Preferably, the driving roller and the driven roller are not in the same vertical direction, and the bottom section of the nylon belt is inclined.

[0009] Preferably, a spring rod is installed between the bracket and the scraper brush, and the front and rear ends of the spring rod are respectively connected to the bracket and the scraper brush.

[0010] Preferably, baffles are welded on the left and right walls inside the return duct, the baffles are located between the nylon belt and the air inlet of the return duct, and the distance between the baffles and the nylon belt does not exceed 1 cm.

[0011] Preferably, the scraping brush is consistent with the horizontal width of the dust filter mesh.

[0012] Beneficial effects of the utility model:

[0013] The utility model arranges a high-efficiency dust removal device on the inner side of the reflux duct, controls the rotation of the driving roller through the motor, causes the nylon belt to flip and move under the guidance of the driving roller and the driven roller, and the dust accumulation part on the dust filter mesh will move down and enter the inner side of the cleaning box. In the process of the dust filter mesh passing through the cleaning box, the scraper brush will stick to the surface of the dust filter mesh for scraping and sweeping, and the swept dust and impurities will fall into the dust collecting drawer for centralized collection. The user only needs to take out the dust collecting drawer regularly for cleaning. The high-efficiency dust removal device can realize automatic cleaning, avoid blockage caused by dust accumulation, reduce manual workload, and further optimize the dust prevention function of the drying unit.

[0014] The utility model provides a spring rod between the bracket and the scraping brush, and the spring rod can provide elastic potential energy for the scraping brush, thereby ensuring that the scraping brush can always be closely attached to the surface of the nylon belt, thereby ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a right-side partial cross-sectional structural schematic diagram of the return pipe in the utility model;

[0017] Figure 3 It is a right side partial cross-sectional structural schematic diagram of the cleaning box in the utility model;

[0018] Figure 4 It is a rear view structural schematic diagram of the return pipe in the utility model;

[0019] Figure 5 It is an independent structural schematic diagram of the nylon belt in the utility model.

[0020] Among them: heat pump drying unit-1, air outlet duct-2, return duct-3, high-efficiency dust removal device-4, cleaning box-41, driving roller-42, motor-43, driven roller-44, nylon belt-45, dust filter mesh-451, bracket-46, spring rod-461, scraper brush-47, dust collection drawer-48, baffle-49. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] See also Figure 1 The utility model provides an intelligent indoor thermal comfort monitoring device for a building, comprising a heat pump drying unit 1, an air outlet duct 2, a return duct 3 and a high-efficiency dust removal device 4. The rear portion of the heat pump drying unit 1 is connected to the air outlet duct 2, the top of the heat pump drying unit 1 is connected to the return duct 3, and the high-efficiency dust removal device 4 is arranged inside the return duct 3.

[0023] See also Figure 2-5 The high-efficiency dust removal device 4 in the utility model includes a cleaning box 41, a driving roller 42, a motor 43, a driven roller 44, a nylon belt 45, a dust filter mesh 451, a bracket 46, a scraping brush 47 and a dust collecting drawer 48. The cleaning box 41 is riveted to the bottom of the return pipe 3, and a driving roller 42 is horizontally arranged at the middle of the inner side of the cleaning box 41. The left and right ends of the driving roller 42 are rotatably connected to the inner side wall of the cleaning box 41. A motor 43 is installed on the right side of the outside of the cleaning box 41, and the output shaft of the motor 43 is connected to the driving roller 42. A driven roller 44 is horizontally arranged at the top of the inner side of the return pipe 3. The left and right ends of the driven roller 44 are connected to the inner side wall of the return pipe 3. The upper end of the nylon belt 45 is sleeved on the outer surface of the driven roller 44, and the lower end of the nylon belt 45 passes through the bottom opening of the reflux duct 3 and extends into the cleaning box 41 and is sleeved on the outer surface of the driving roller 42. The driving roller 42 establishes a transmission connection with the driven roller 44 through the nylon belt 45. A dust filter mesh 451 is provided in the middle area of ​​the nylon belt 45. A bracket 46 is screwed on the front side wall inside the cleaning box 41, and a scraper 47 is installed on the rear end of the bracket 46. The scraper brush 47 is attached to the surface of the nylon belt 45. A dust collecting drawer 48 is arranged at the bottom of the inner side of the cleaning box 41, and the dust collecting drawer 48 can be slid outward through the rear opening of the cleaning box 41.

[0024] To further illustrate, the dust filter mesh 451 accounts for no less than 80% of the longitudinal cross-sectional area in the return duct 3, thereby ensuring the dust filtering effect.

[0025] To further illustrate, the driving roller 42 and the driven roller 44 are not in the same vertical direction, and the bottom section of the nylon belt 45 is inclined so that dust can be more easily scraped off by the scraping brush 47 and fall into the dust collecting drawer 48 under the action of gravity potential energy.

[0026] Further explanation, a spring rod 461 is installed between the bracket 46 and the scraper brush 47. The front and rear ends of the spring rod 461 are respectively connected to the bracket 46 and the scraper brush 47. The spring rod 461 can provide elastic potential energy for the scraper brush 47 to ensure that the scraper brush 47 can always fit tightly on the surface of the nylon belt 45 to ensure the cleaning effect.

[0027] Further explanation: baffles 49 are welded on the left and right walls inside the return duct 3. The baffles 49 are located between the nylon belt 45 and the air inlet of the return duct 3, and the distance between the baffles 49 and the nylon belt 45 does not exceed 1 cm. The baffles 49 can cover the gaps on the left and right sides of the nylon belt 45 to prevent dust-laden airflow from passing through the gaps, thereby ensuring the dust filtering effect of the nylon belt 45.

[0028] To further illustrate, the scraping brush 47 is consistent with the horizontal width of the dust filter mesh 451, ensuring that the scraping brush 47 can completely clean all parts of the dust filter mesh 451 without leaving any dead corners.

[0029] Here’s how it works:

[0030] First, the air outlet pipe 2 is connected to the air inlet of the drying room, and the return pipe 3 is connected to the air outlet of the drying room, so as to complete the installation of the drying unit 1, and then the motor 43 is connected to the control system of the drying unit 1 for centralized control.

[0031] Second, when in use, the drying unit 1 is turned on and powered on, and hot air is blown into the drying room through the air outlet pipe 2. After passing through the drying room, the hot air is circulated back to the drying unit 1 through the return pipe 3 to realize heat energy recovery, thereby improving thermal efficiency and reducing operating energy consumption.

[0032] Third, during use, dust and impurities in the drying room can easily enter the drying unit 1 through the return duct 3. By arranging a high-efficiency dust removal device 4 on the inner side of the return duct 3, when the airflow in the return duct 3 passes through the dust filter mesh 451 on the surface of the nylon belt 45, large particles of dust in the airflow are filtered out and intercepted through the dust filter mesh 451, thereby reducing the dust content of the airflow and providing dust protection for the drying unit 1.

[0033] Fourth, after a period of use, dust and impurities will accumulate on the surface of the dust filter mesh 451. When cleaning is needed, the user only needs to start the motor 43, and the motor 43 controls the driving roller 42 to rotate, so that the nylon belt 45 is turned over under the guidance of the driving roller 42 and the driven roller 44. The dust accumulation part on the dust filter mesh 451 will move down and enter the inner side of the cleaning box 41. In the process of the dust filter mesh 451 passing through the cleaning box 41, it will be scraped by the scraper 47 on its surface. By setting a spring rod 461 between the bracket 46 and the scraper brush 47, the spring rod 461 can provide elastic potential energy for the scraper brush 47 to ensure that the scraper brush 47 can always fit tightly on the surface of the nylon belt 45 to ensure the cleaning effect. The swept dust and impurities will fall into the dust collecting drawer 48 for centralized collection. The user only needs to take out the dust collecting drawer 48 regularly for cleaning. The high-efficiency dust removal device 4 can realize automatic cleaning, avoid blockage caused by dust accumulation, reduce manual workload, and further optimize the dust prevention function of the drying unit 1.

[0034] The utility model provides a closed heat pump dryer, which is provided with a high-efficiency dust removal device 4 at the inner side of a reflux duct 3, and controls the rotation of a driving roller 42 through a motor 43, so that the nylon belt 45 is turned over under the guidance of the driving roller 42 and the driven roller 44, and the dust accumulation part on the dust filter mesh 451 will move down and enter the inner side of the cleaning box 41, and the dust filter mesh 451 will be scraped and swept by a scraper 47 in the process of passing through the cleaning box 41, and the swept dust and impurities will fall into a dust collecting drawer 48 for centralized collection, and the user only needs to take out the dust collecting drawer 48 for cleaning regularly, and the high-efficiency dust removal device 4 can realize automatic cleaning, avoid blockage caused by dust accumulation, and reduce manual workload, further optimizing the dust prevention function of the drying unit 1, and a spring rod 461 is provided between the bracket 46 and the scraper brush 47, and the spring rod 461 can provide elastic potential energy for the scraper brush 47, so as to ensure that the scraper brush 47 can always be closely fitted to the surface of the nylon belt 45, thereby ensuring the cleaning effect.

[0035] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A closed heat pump drying machine, comprising a heat pump drying unit (1), an air outlet pipe (2) and a return pipe (3), wherein the heat pump drying unit (1) is connected to the air outlet pipe (2) at the rear, and the heat pump drying unit (1) is connected to the return pipe (3) at the top; Features: The invention also comprises a high-efficiency dust removal device (4), wherein the high-efficiency dust removal device (4) is arranged inside the return pipe (3), and the high-efficiency dust removal device (4) comprises a cleaning box (41), a driving roller (42), a motor (43), a driven roller (44), a nylon belt (45), a dust filter mesh (451), a bracket (46), a scraping brush (47) and a dust collecting drawer (48). The bottom of the return pipe (3) is riveted with a cleaning box (41), a driving roller (42) is arranged horizontally in the middle of the inner side of the cleaning box (41), and the left and right ends of the driving roller (42) are rotatably connected to the inner wall of the cleaning box (41), a motor (43) is installed on the right side of the outside of the cleaning box (41), and the output shaft of the motor (43) is connected to the driving roller (42), and a driven roller (44) is arranged horizontally at the top of the inner side of the return pipe (3), and the driven roller ( The left and right ends of the nylon belt (44) are rotatably connected to the inner wall of the return pipe (3); the upper end of the nylon belt (45) is sleeved on the outer surface of the driven roller (44); the lower end of the nylon belt (45) passes through the bottom opening of the return pipe (3) and extends into the cleaning box (41) and is sleeved on the outer surface of the driving roller (42); the driving roller (42) is connected to the driven roller (44) through the nylon belt (45); a dust filter mesh (451) is arranged in the middle area of ​​the nylon belt (45); a bracket (46) is screwed on the front side wall of the cleaning box (41); a scraping brush (47) is installed on the rear end of the bracket (46); the scraping brush (47) is attached to the surface of the nylon belt (45); a dust collecting drawer (48) is arranged on the inner bottom of the cleaning box (41), and the dust collecting drawer (48) can be slid outward through the rear opening of the cleaning box (41) to be taken out.

2. A closed heat pump dryer according to claim 1, characterized in that: The dust filter mesh (451) accounts for no less than 80% of the longitudinal cross-sectional area in the return pipe (3).

3. A closed heat pump dryer according to claim 1, characterized in that: The driving roller (42) and the driven roller (44) are not in the same vertical direction, and the bottom section of the nylon belt (45) is inclined.

4. A closed heat pump dryer according to claim 1, characterized in that: A spring rod (461) is installed between the bracket (46) and the scraper (47), and the front and rear ends of the spring rod (461) are respectively connected to the bracket (46) and the scraper (47).

5. A closed heat pump dryer according to claim 1, characterized in that: Baffles (49) are welded on the left and right walls of the return duct (3); the baffles (49) are located between the nylon belt (45) and the air inlet of the return duct (3); and the distance between the baffles (49) and the nylon belt (45) does not exceed 1 cm.

6. A closed heat pump dryer according to claim 1, characterized in that: The scraping brush (47) is consistent with the horizontal width of the dust filter mesh (451).

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