Roller dryer
By installing a heating device at the rear end of the drum and changing the direction of the hot air, combined with the design of the outer drum and air duct, the problem of low heat utilization rate of existing drum dryers has been solved, achieving more efficient hot air utilization and shortening drying time.
Patent Information
- Application Number
- CN202520576457.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The existing duct design of rotary drum dryers results in low heat utilization, with some hot air being lost without passing through the inside of the drum, leading to long drying times.
By changing the direction of the hot air and placing the heating device in the connecting cavity at the rear end of the drum, the hot air enters the rear end of the drum through the connecting cavity and then exits from the front end along the drum axis. Combined with the design of the outer cylinder and air duct, heat loss is reduced and utilization is improved.
It improves the utilization rate of hot air, shortens the drying time, and ensures that the hot air is fully utilized through slow hot air circulation, and the exhaust air can be recycled.
Smart Images
Figure CN223951451U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of drying machine, especially, it relates to a drum dryer. BACKGROUND
[0002] The main function of the drying machine is to provide heat through the heating device, and the moisture in the wet clothes is rapidly volatilized through the hot air form, so that the clothes are quickly dried. At present, the drum dryer mostly adopts the straight exhaust air duct structure. The exhaust port and the air inlet are usually needed to ensure that the air can enter and exit the drying machine. The drum also continuously rotates at the same time of drying. However, the existing drying structure design has defects. The air duct direction is mostly L-shaped distribution. The air inlet and the heating device are arranged on the top of the drum. The fan and other structures are used to blow air to the bottom of the drum. The hot air passes through the drum downward, and finally is discharged from the front side or the rear side of the bottom. The air inlet design of such drying structure makes part of the airflow carrying heat not pass through the inside of the drum, but flow from the side of the drum. The heat utilization rate is very low, and the drying time is long. SUMMARY
[0003] The utility model discloses a drum dryer, which changes the direction of hot air to solve the above-mentioned problems.
[0004] To achieve the above object, the utility model provides the following technical scheme: a drum dryer, which comprises a machine box, a drum and a heating device. The drum is rotatably arranged in the machine box. Multiple through holes are arranged on both ends of the drum. The rear end of the drum is connected to the outside through a connecting cavity. The heating device is arranged in the connecting cavity. An air duct is arranged below the drum. The air duct inlet is connected to the front end of the drum. The air duct outlet is arranged on the top or the rear of the machine box. The air duct is provided with a fan.
[0005] Further, a partition is arranged in the machine box, so that two cavities are formed between the partition and the front side / rear side of the machine box. The drum is arranged in the cavity in front of the partition.
[0006] Further, gaps are formed between both ends of the drum and the partition and the front side of the machine box. An outer cylinder is arranged on the drum. The outer cylinder is abutted to the partition and the front side of the machine box at both ends, so that air flowing spaces are formed at both ends of the drum. One air flowing space is connected to the air duct, and the other air flowing space is connected to the connecting cavity.
[0007] Further, the outer cylinder is fixedly arranged in the machine box. The outer cylinder is provided with an opening connected to the air duct. The opening is located between the drum and the air duct.
[0008] Further, the opening is detachably provided with a filter layer.
[0009] Further, the connecting cavity is provided with a plurality of baffles on both sides in staggered arrangement, so as to form a bypass channel, the heating device is arranged at the channel entrance, and the channel exit is connected to the rear end of the roller.
[0010] Further, the rear side of the cabinet is provided with an air inlet corresponding to the connecting cavity.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the connecting cavity is communicated with the rear end of the roller, the heating device is arranged in the connecting cavity, the air duct is communicated with the front end of the roller, the heating device is used for heating air, the hot air enters the rear end of the roller from the connecting cavity, and then is discharged to the air duct from the front end along the axial direction of the roller, so that the hot air can penetrate the roller, heat loss is reduced, the utilization rate of the hot air is improved, the drying time is shortened, and the fan is arranged in the air duct behind the roller according to the air blowing direction, which is beneficial to the discharge of the air after drying. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a front angle perspective view of the utility model.
[0013] Figure 2 It is a back angle perspective view of the utility model.
[0014] Figure 3 It is a sectional view of the utility model.
[0015] Figure 4 It is an internal structure schematic view of the utility model.
[0016] Figure 5 It is another angle schematic view of the internal structure of the utility model.
[0017] Figure 6 It is a structure schematic view of the cavity behind the partition plate in the utility model.
[0018] Figure 7 It is a perspective view of the roller in the utility model.
[0019] Figure 8 It is another angle perspective view of the roller in the utility model.
[0020] In the drawing: cabinet 1, roller 2, heating device 3, air duct 4, outer cylinder 5, partition plate 11, connecting cavity 30, fan 41, air inlet 100, air passing space 205, through hole 222, baffle 301, filter layer 441, opening 500. DETAILED DESCRIPTION
[0021] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of embodiments of the utility model, and not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.
[0022] As shown in the drawings, the utility model relates to a drum dryer, including machine box 1, drum 2 and heating device 3, machine box 1 is rectangular body, each side has side panel, still set up taking and placing mouth on the front side panel, the taking and placing mouth corresponds to the front end of drum 2, the drum 2 rotationally arranged in machine box 1, heating device 3 can adopt heating device 3 such as electric heating pipe, the drum 2 front and rear ends are evenly distributed with multiple through holes 222, referring to the drawing, the middle of the front end of drum 2 has another taking and placing mouth, the user puts or takes clothes into drum 2 through the taking and placing mouth, the machine box 1 taking and placing mouth is provided with door panel, and this belongs to the structure of the existing drum 2 dryer, it needs to be explained that the through hole 222 of the front end of drum 2 is annularly arranged with the taking and placing mouth of drum 2 as the center, the rear end of drum 2 is communicated with the outside through connecting cavity 30, connecting cavity 30 has an inlet and an outlet, the outlet is communicated with the rear end of drum 2, and the inlet is communicated with the outside air, the heating device 3 is arranged in connecting cavity 30, the air duct 4 is arranged below the drum 2, the inlet of air duct 4 is communicated with the front end of drum 2, and the outlet of air duct 4 is arranged at the top or rear part of machine box 1, such as Figure 1 、 2 The outlet of air duct 4 shown in the middle is located at the top, and can also be arranged at the rear position, the air duct 4 is provided with fan 41, and the air duct 4 includes a horizontal section below the drum 2 and a vertical section behind the partition plate 11.
[0023] The utility model relates to a drum dryer, which is communicated with the connecting cavity 30 at the rear end of the drum 2, and the heating device 3 is arranged in the connecting cavity 30, the connecting cavity 30 has an inlet and an outlet, the outlet is communicated with the rear end of the drum 2, and the inlet is communicated with the outside air, the outside air enters the connecting cavity 30, is heated by the heating device 3, and becomes hot air, the hot air here refers to air with heat, the hot air enters the rear end of the drum 2 from the outlet of the connecting cavity 30, the air duct 4 is communicated with the front end of the drum 2, the air is heated by the heating device 3, and the hot air enters the rear end of the drum 2 from the connecting cavity 30, and then is discharged to the air duct 4 from the front end along the axial direction of the drum 2, so that the hot air can penetrate the drum 2, the heat loss is reduced, the utilization rate of the hot air is improved, the drying time is shortened, the fan 41 is arranged in the air duct 4 behind the drum 2 according to the blowing direction, which is conducive to the discharge of the air after drying or the recycling of the discharged air, the smoothness of the hot air entering and exiting the drum 2 is maintained, and the hot air can enter the drum 2 at a relatively slow speed, so that the fan 41 directly blowing the hot air into the drum 2 is avoided, and it is ensured that the air is heated to a certain temperature in the connecting cavity 30 before entering the drum 2.
[0024] In the embodiment, the cabinet 1 is internally provided with a partition plate 11, thereby forming two cavities between the partition plate 11 and the front / rear side of the cabinet 1, the drum 2 is arranged in the cavity in front of the partition plate 11, the front cavity is the cavity where the drum 2, the outer cylinder 5 and part of the air duct 4 are arranged, and the rear cavity is used for mounting a motor assembly for driving the drum 2 to rotate, the heating device 3 and the like. The motor assembly includes a motor, a rotating shaft connected to the drum 2 and the like, which belongs to the prior structure and will not be described in detail here. The drum 2 has a gap between both ends of the drum 2 and the partition plate 11 and the front side of the cabinet 1, the drum 2 is sleeved with the outer cylinder 5, the both ends of the outer cylinder 5 abut against the partition plate 11 and the front side of the cabinet 1, thereby forming air passing spaces 205 at both ends of the drum 2, there is a gap between the outer cylinder 5 and the drum 2, the outer cylinder 5 is fixed in the cabinet 1 and does not rotate with the drum 2, a sealing ring is arranged at a position close to the rear end in the gap, the sealing ring is preferably directly used to connect the drum 2 and the outer cylinder 5, one air passing space 205 is connected to the air duct 4, and the other air passing space 205 is connected to the connecting cavity 30. The outer cylinder 5 arranged outside the drum 2 can achieve a heat preservation effect and prevent heat loss into the cabinet 1; meanwhile, the drum 2 needs to be connected to the air duct 4 at the front end, since the drum 2 will continuously rotate during the drying process, the arrangement of the outer cylinder 5 can also guide hot air to enter the air duct 4 from the front end of the drum 2. Specifically, the outer cylinder 5 is fixedly arranged in the cabinet 1, the outer cylinder 5 is provided with an opening 500 connected to the air duct 4, the opening 500 is located between the drum 2 and the air duct 4, hot air is discharged from the front end of the drum 2 to the air passing space 205 at the front end, then enters the air duct 4 through the opening 500 arranged on the outer cylinder 5, there is a gap between the front end of the drum 2 and the outer cylinder 5, which is beneficial to the hot air in the drum 2 to enter the gap, then enter the gap between the outer cylinder 5 and the drum 2, and finally enter the air duct 4 through the opening 500, so as to make full use of the hot air. The opening 500 is detachably provided with a filter layer 441, which can be directly used as a filter screen. The filter layer 441 is arranged at the opening 500, so that the hot air passes through the filter layer 441 and then enters the air duct 4 for discharge. The filter layer 441 can filter out impurities such as lint to prevent pollution of the environment.
[0025] In the embodiment, the connecting cavity 30 is correspondingly provided with a plurality of baffles 301 arranged in a staggered manner on both sides, thereby forming a circuitous channel, the heating device 3 is arranged at the entrance of the channel, and the outlet of the channel is connected to the rear end of the drum 2. The hot air in the connecting cavity 30 is slowly introduced into the rear end of the drum 2 through the circuitous channel. During the drying process, the drum 2 and the external environment need to be continuously circulated, air enters from the connecting cavity 30 and is finally discharged from the air duct 4. In this process, the circuitous channel of the connecting cavity 30 makes the hot air pass through at a slower speed, so as to ensure that the hot air obtains enough heat before being discharged into the drum 2.
[0026] In the embodiment, the rear side of the cabinet 1 is provided with an air inlet 100 corresponding to the connecting cavity 30, air enters the connecting cavity 30 from the air inlet 100, and the air inlet 100 and the outlet of the air duct 4 cooperate to ensure air circulation of the drum 2.
[0027] At the beginning, the drum 2 starts to rotate, the heating device 3 and the fan 41 also start to operate, external air enters the connecting cavity 30, the air is heated by the heating device 3, passes through the passage, enters the air passing space 205 between the rear end of the drum 2 and the partition plate 11, enters the drum 2 through the through hole 222 at the rear end of the drum 2, the hot air penetrates the drum 2 along the axial direction of the drum 2, finally enters another air passing space 205 through the through hole 222 at the front end of the drum 2, enters the air duct 4 through the opening 500, and is finally discharged from the outlet of the air duct 4, and the fan 41 mainly assists the hot air circulation in the drum 2.
[0028] The above embodiment is a preferred embodiment of the utility model, and any similar structure and equivalent changes made should belong to the protection scope of the utility model.
Claims
1. A drum dryer comprising a housing, a drum and a heat generating device, characterized in that: The drum is rotatably arranged in the cabinet, the drum is provided with a plurality of through holes at two ends thereof, the rear end of the drum is communicated with the outside through a connecting cavity, the heating device is arranged in the connecting cavity, a wind channel is arranged below the drum, an inlet of the wind channel is communicated with the front end of the drum, an outlet of the wind channel is arranged on the top or rear of the cabinet, and the wind channel is provided with a fan.
2. A drum dryer according to claim 1, characterised in that: The cabinet is internally provided with a partition plate, thereby forming two cavities between the partition plate and the front side / rear side of the cabinet, and the drum is arranged in the cavity in front of the partition plate.
3. A drum dryer according to claim 2, characterised in that: The drum is provided with an outer cylinder, and the outer cylinder is abutted against the partition plate and the front side of the cabinet at two ends thereof, thereby forming two air passing spaces at two ends of the drum, one of the air passing spaces is communicated with the wind channel, and the other air passing space is communicated with the connecting cavity.
4. A drum dryer according to claim 3, characterised in that: The outer cylinder is fixedly arranged in the cabinet, and the outer cylinder is provided with an opening communicated with the wind channel, the opening is located between the drum and the wind channel.
5. A drum dryer according to claim 4, characterised in that: The opening is detachably provided with a filter layer.
6. A drum dryer according to claim 1, characterised in that: The connecting cavity is correspondingly and staggeredly provided with a plurality of baffles on two sides, thereby forming a circuitous channel, the heating device is arranged at an inlet of the channel, and an outlet of the channel is connected with the rear end of the drum.
7. A drum dryer according to claim 1, characterised in that: The rear side of the cabinet is provided with an air inlet corresponding to the connecting cavity.