WO2018045996A1

WO2018045996A1 - Clothes dryer transmission system

Info

Publication number: WO2018045996A1
Application number: PCT/CN2017/101076
Authority: WO
Inventors: 施衍奇; 邴进东; 王健
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2016-09-09
Filing date: 2017-09-08
Publication date: 2018-03-15
Also published as: CN107805929B; CN107805929A

Abstract

A clothes dryer transmission system, comprising a drum (2) for holding clothes, a fan (3) for blowing air to the drum (2), and a motor (4) for driving the drum (2). The motor (4) is connected to the fan (3) and drives the fan (3) to rotate; a reversing transmission mechanism is connected in series between the motor (4) and the fan (3); the reversing transmission mechanism is able to make the fan (3) not follow the reversed rotation of the motor (4) when the motor (4) reverses the rotation direction. By providing a reversing transmission mechanism between the motor (4) and the fan (3) in the clothes dryer transmission system, when the motor (4) drives the drum (2) to rotate forwardly and reversely, by controlling the reversing transmission mechanism, the fan (3) may keep rotating along one direction, so that the problem of tangling of clothes during forward and reverse rotation of the motor (4) is resolved, the fan (3) can provide a stable air volume along a same direction, and the uniformity and efficiency of clothes drying are improved.

Description

Dryer drive system

Technical field

The invention belongs to the field of clothes dryers, and in particular to a dryer drive system.

Background technique

The dryer is a clean household appliance that uses heated air to evaporate and dry the moisture in the washed clothes. The dryer is popular among people because of its quick drying characteristics. With the increasing market demand for clothes dryers, the drying effect on clothes is becoming higher and higher. The problem of clothing entanglement during the operation of clothes dryers has always been the focus of attention, and winding will not only increase the clothing. The degree of wear and tear, and will affect the drying effect of the clothes, resulting in the clothes drying or excessive drying.

The problem of clothing entanglement often occurs in the operation of the dryer, and the rotation of the dryer roller in one direction for a long time is one of the most important causes of the entanglement of the clothes, because the fan of the existing clothes dryer generally uses a curved blade turbo fan, which The advantages of the fan are small volume, large air volume, high efficiency, but not suitable for reverse operation; a dryer with a positive and negative motor, the fan uses a straight-blade fan, although it can dry clothes during forward rotation and reverse rotation. However, the diameter of the straight-blade fan is large, which not only occupies more space, but also has a lower drying efficiency.

The present invention has been made in view of the above.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a dryer drive system, wherein a reversing transmission mechanism is provided between the connection of the motor and the fan, and the motor passes through when the drum rotates forward and reverse. By controlling the reversing transmission mechanism, the fan can always rotate in one direction, and the fan can provide the same direction and stable air volume while the motor is being reversed and reversed to solve the problem of the clothing winding, thereby improving the uniformity of the clothes and the drying efficiency and saving. Drying time and reducing energy consumption.

In order to solve the above technical problems, the basic idea of adopting the technical solution of the present invention is:

A dryer drive system includes a drum for holding clothes, a fan for supplying air to the drum, and a motor for driving the drum, wherein the drum is provided with an air inlet and an air outlet, and the fan passes through the air inlet and the air inlet The air inlet is connected, the motor is connected to the fan and drives the fan to rotate, and the reversing transmission mechanism is connected between the motor and the fan, and the reversing transmission mechanism can make the fan not follow the motor when the motor rotates in the direction of reversing Turn to the direction.

Further, the reversing transmission mechanism includes a first driving wheel and a first driven wheel, the first driving wheel is connected to the motor, the first driven wheel is connected to the fan, and the first driving wheel is The first driven wheel is drivingly coupled to the first driven wheel, and the first transmitting device is configured to cause the first driving wheel to stop transmitting to the first driven wheel under an external force.

Further, the first transmission device includes a first driving shaft and a first driven shaft, the first driving shaft is coupled to the first driving wheel, and the first driven shaft is coupled to the first driven wheel. The first driving shaft is rotatably sleeved outside the first driven shaft, and the first driving shaft is sleeved with a first connecting unit that can slide axially in the first driving shaft, the first A connecting unit is arranged to drive the first driving wheel and the first driven wheel when the first driving shaft is axially slid to a certain position.

Further, the first transmission device further includes a first control unit for controlling axial displacement of the first connecting unit in the first driving shaft, the first control unit including a first spring, a first electromagnetic block, a first coil, the first electromagnetic block and the first coil are connected by a first spring, the first coil is fixed at an end of the first driving shaft close to the first driving wheel, the first electromagnetic block and the first A connection unit is connected.

Further, the reversing transmission mechanism further includes a second driving wheel and a second driven wheel, wherein the second driving wheel is meshed with the first driving wheel, and the second driven wheel and the first driven wheel Connected by a belt or a chain, the second driving wheel and the second driven wheel are drivingly connected by a second transmission, and the second transmission is arranged to cause the second driving wheel and the second driven wheel to stop under an external force transmission.

Further, the second transmission device includes a second driving shaft and a second driven shaft, the second driving shaft is coupled to the second driving wheel, and the second driven shaft is coupled to the second driven wheel. The second driving shaft is rotatably sleeved outside the second driven shaft, and the second driving shaft is sleeved with a second connecting unit axially slidable in the second driving shaft, the The two connecting units are arranged to drive the second driving wheel and the second driven wheel when the second driving shaft is axially slid to a certain position.

Further, the second transmission device further includes a second control unit for controlling axial displacement of the second connecting unit in the second driving shaft, and the second control unit includes a second spring, a second electromagnetic block, a second coil, the second electromagnetic block and the second coil are connected by a second spring, and the second coil is fixed at an end of the second driving shaft close to the second driving wheel, the second electromagnetic block and the second Two connection units are connected.

Further, the first connecting unit is a ratchet, and the first driven wheel is provided with a tooth groove that rotates in cooperation with the ratchet.

Further, the second connecting unit is a ratchet, and the second driven wheel is provided with a tooth groove that rotates in cooperation with the ratchet.

Further, the fan is a centrifugal fan, and the fan blades of the centrifugal fan are curved leaves.

After adopting the above technical solution, the present invention has the following advantageous effects compared with the prior art.

The invention provides a reversing transmission mechanism between the motor and the fan connection. When the motor drives the drum to rotate forward and reverse, by controlling the reversing transmission mechanism, the fan can be stopped or always rotated in one direction, and the reversing rotation of the motor The clothes of the drum can be not entangled or wrinkled, and the reversing transmission mechanism enables the fan to provide a one-way stable air volume for the drum, improve uniformity of drying clothes, drying efficiency, save drying time and reduce energy consumption.

Compared with the existing clothes dryer, the invention not only has stable air volume, but also solves the problem of entanglement of clothes, and provides a new technical solution for solving the problem of entanglement of clothes and low drying efficiency, thereby ensuring drying efficiency, and The invention can ensure that the clothes are uniformly dried and not entangled, and the invention has the advantages of simple structure, low production cost and resource saving.

The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are intended to be illustrative of the invention. It is apparent that the drawings in the following description are only some embodiments, and other drawings may be obtained from those skilled in the art without departing from the drawings. In the drawing:

Figure 1 is a schematic structural view of a reversing transmission mechanism of the present invention;

Figure 2 is a plan view of the reversing transmission mechanism of the present invention;

3 is a schematic view showing the assembly of an embodiment of the present invention;

4 is a schematic view of a member of an embodiment of the present invention.

In the figure: 1-shell; 2-roller; 3-fan; 4-motor; 5-commutation clutch; 6-heater; 7-condenser; 8-filter; 9-roller belt; Driving wheel; 512-first driven wheel; 513-first driving shaft; 514-first control unit; 515-first ratchet; 521-second driving wheel; 522-second driven wheel; 523-second driving shaft ; 525 - second ratchet; 530 - belt.

It is to be understood that the drawings and the written description are not intended to limit the scope of the present invention in any way.

detailed description

The embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installation" and "phase" unless otherwise specifically defined and defined. "Connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or through the middle. The medium is indirectly connected. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

As shown in FIG. 1 to FIG. 4, a dryer drive system according to the present invention includes a drum 2 for holding laundry, a fan 3 for supplying air to the drum 2, and a motor 4 for driving the drum 2, The drum 2 is provided with an air inlet and an air outlet. The fan 3 is connected to the air inlet through an air inlet. The motor 4 is connected to the fan 3 and drives the fan 3 to rotate. The motor 4 and the fan 3 are connected. In the series reversing transmission mechanism, the reversing transmission mechanism can cause the fan 3 not to rotate in accordance with the reversing of the motor 4 when the motor 4 is rotated in the reverse direction.

Specifically, a reversing transmission mechanism is connected in series between the motor 4 and the fan 3, so that the fan 3 can rotate forward when the motor 4 rotates forward, and the fan 3 is stationary or forward when the motor 4 is reversed, so that the motor 4 can drive the drum 2 to be positive. When reversing, the fan 3 can provide a stable one-way wind for the drum 2, ensuring that the clothes in the drum 2 are not entangled, and the drying efficiency is ensured.

The reversing transmission mechanism of the present invention includes a first driving wheel 511 and a first driven wheel 512. The first driving wheel 511 is connected to the motor 4, and the first driven wheel 512 is connected to the fan 3. The first driving wheel 511 and the first driven wheel 512 are drivingly connected by a first transmission device, and the first transmission device is arranged to cause the first driving wheel 511 to stop transmitting to the first driven wheel 512 under the action of an external force. The connection between the first driving wheel 511 and the first driven wheel 512 is controlled by the first transmission device, so that the first driving wheel 512 rotates forward when the first driving wheel 511 rotates forward, and the first driving wheel 511 reverses when the first driving wheel 511 rotates. The driven wheel 512 is no longer driven by the first drive wheel 511, at which time the first driven wheel 512 is in a stationary state or provided by another device.

The first transmission shaft includes a first driving shaft 513 and a first driven shaft. The first driving shaft 513 is connected to the first driving wheel 511, and the first driven shaft is connected to the first driven wheel 512. The first driving shaft 513 is rotatably sleeved outside the first driven shaft, and the first driving shaft 513 is sleeved with a first connecting unit that can slide axially in the first driving shaft 513. The first connecting unit is configured to drive the first driving wheel 511 and the first driven wheel 512 when the first driving shaft 513 is axially slid to a certain position. The first driving shaft 513 and the first driven shaft are sleeved structures, and are provided with a latching device that does not disengage the first driven shaft from the first driving shaft 513. Preferably, the first driven shaft is at the first The radial rotation of the drive shaft 513 does not cause displacement in the axial direction, and the first drive shaft 513 is coupled to the first driven shaft through a bearing. A first connecting unit capable of sliding in the axial direction is disposed outside the first driving shaft 513. Preferably, the first driving shaft 513 is provided with an axial sliding groove, and the first connecting unit is slidably connected with the sliding groove. The first connecting unit is axially slid in the first driving shaft 513, and when the first connecting unit is at a certain position, the driving of the first driven wheel 512 is triggered, thereby driving the first driven wheel 512 to rotate, preferably, the first connecting unit a ratchet wheel, the first driven wheel 512 facing the end surface of the first connecting unit is provided with a tooth groove matched with the ratchet wheel, The ratchet wheel is axially slidably coupled to the first driving shaft 513. The ratchet wheel can rotate synchronously with the first driving wheel 511 and can slide axially on the first driving shaft 513. After the ratcheting of the first driven wheel 512 is triggered, the ratchet wheel drives the first The driven wheel 512 rotates in synchronization with the first driving wheel 511.

The first transmission device further includes a first control unit 514 for controlling axial displacement of the first connecting unit at the first driving shaft 513, the first control unit 514 including a first spring, a first electromagnetic block, and a first coil The first electromagnetic block is connected to the first coil by a first spring, and the first coil is fixed to an end of the first driving shaft 513 near the first driving wheel 511, the first electromagnetic block and the first Connection unit connection. When the first coil is energized, the first coil pulls the first electromagnetic block to compress the spring and drive the first connecting unit, the first connecting unit gradually moves away from the first driven wheel 512 and stops driving the first driven wheel 512, preferably The first spring, the first electromagnetic block, and the first coil are all sleeved on the first driving shaft 513.

By connecting the first driving wheel 511 and the first driven wheel 512, by controlling the driving connection between the first driving wheel 511 and the first driven wheel 512, the first driving wheel 511 drives the first driven wheel 512 during normal transmission. Forward rotation; when the first driving wheel 511 becomes reversed, the first driven wheel 512 stops rotating.

The reversing transmission mechanism of the present invention further includes a second driving wheel 521 and a second driven wheel 522. The second driving wheel 521 is meshed with the first driving wheel 511, and the second driven wheel 522 is coupled with The first driven wheel 512 is connected by a belt 530 or a chain, the second driving wheel 521 and the second driven wheel 522 are drivingly connected by a second transmission, and the second transmission device is arranged to cause a second under the action of an external force. The driving wheel 521 and the second driven wheel 522 stop driving. The connection between the second driving wheel 521 and the second driven wheel 522 is controlled by the second transmission device to realize the forward rotation of the second driven wheel 522 when the second driving wheel 521 is rotated forward, and the second when the second driving wheel 521 is reversed. The driven wheel 522 is no longer driven by the second drive wheel 521, and the second driven wheel 522 is in a stationary state or provided by other means.

The second transmission shaft includes a second driving shaft 523 and a second driven shaft. The second driving shaft 523 is coupled to the second driving wheel 521, and the second driven shaft is coupled to the second driven wheel 522. The second driving shaft 523 is rotatably sleeved outside the second driven shaft, and the second driving shaft 523 is sleeved with a second connecting unit that can slide axially in the second driving shaft 523. The second connecting unit is configured to drive the second driving wheel 521 and the second driven wheel 522 when the second driving shaft 523 is axially slid to a certain position. The second driving shaft 523 and the second driven shaft are sleeved structures, and are provided with a latching device that does not disengage the second driven shaft and the second driving shaft 523. Preferably, the second driven shaft is in the second The radial rotation of the drive shaft 523 does not cause displacement in the axial direction, and the second drive shaft 523 and the second driven shaft are coupled by bearings. A second connecting unit capable of sliding in the axial direction is disposed outside the second driving shaft 523. Preferably, the second driving shaft 523 is provided with an axial sliding slot, and the second connecting unit is slidably connected with the sliding slot. The connecting unit is axially slid in the second driving shaft 523, and when the second connecting unit is in a certain position, the driving of the second driven wheel 522 is triggered, thereby driving the second driven wheel 522 to rotate. Optionally, the second connecting unit is a ratchet, and the end surface of the second driven wheel 522 facing the second connecting unit is provided with a slot matched with the ratchet, the ratchet is slidably connected with the second driving shaft 523, and the ratchet can be connected with the second driving wheel 521 Synchronously rotating and axially sliding on the second driving shaft 523, after the ratcheting of the second driven wheel 522 is triggered, the ratchet drives the second driven wheel 522 and the second driving wheel 521 to rotate synchronously.

The second transmission device further includes a second control unit for controlling axial displacement of the second connecting unit at the second driving shaft 523, the second control unit including a second spring, a second electromagnetic block, and a second coil. The second electromagnetic block and the second coil are connected by a second spring, and the second coil is fixed to one end of the second driving shaft 523 near the second driving wheel 521, the second electromagnetic block and the second connecting unit. connection. When the second coil is energized, the second coil pulls the second electromagnetic block to compress the spring and drive the second connecting unit, the second connecting unit gradually moves away from the second driven wheel 522, and stops driving the second driven wheel 522, preferably The second spring, the second electromagnetic block, and the second coil are all sleeved on the second driving shaft 523.

In order to increase the air intake amount of the fan 3, the fan 3 is a centrifugal fan, and the fan blades of the centrifugal fan are curved leaves.

The meshing transmission of the second driving wheel 521 and the first driving wheel 511 of the present invention can change the driving direction of the first driving wheel 511. When the first driving wheel 511 is reversed, the second driving wheel 521 rotates forward to control the first initiative. The wheel 511 and the first driven wheel 512 stop the transmission, and then control the transmission connection between the second driving wheel 521 and the second driven wheel 522. When the second driving wheel 521 rotates forward, the second driven wheel 522 is rotated forward. The driven wheel 522 drives the first driven wheel 512 to rotate forward through the belt 530, so that when the first driving wheel 511 is reversed, the first driven wheel 512 is rotated forward after being driven by the stages to realize the reverse rotation of the motor 4, and the fan 3 The purpose of always turning in one direction is to enable the fan 3 to provide a continuous and stable one-way wind.

When the motor of the invention drives the drum to rotate forward and reverse, by controlling the reversing transmission mechanism, the fan can be stopped or always rotated in one direction, and the reversing rotation of the motor can make the drum clothes not wrap or wrinkle, and the reversing transmission The mechanism enables the fan to provide a one-way stable air volume for the drum, which improves the uniformity of the clothes and the drying efficiency, thereby saving the drying time and reducing the energy consumption. The invention has novel structure, and provides a new technical solution for not simultaneously solving the clothing winding and hot air drying in the drying process, which can ensure the drying efficiency, and can ensure uniform drying and no winding of the clothes, and the invention has simple structure and production. Low cost and resource saving.

Embodiment 1

As shown in FIG. 1 to FIG. 4, a dryer drive system according to this embodiment includes a casing 1, a drum for holding laundry, a fan 3 for supplying air to the drum 2, a driving roller 2, and The motor 4 of the fan 3 rotates, the drum 2 is provided with an air inlet and an air outlet, and the fan 3 is connected to the air inlet through the air inlet, and the reversing transmission mechanism is connected in series between the motor 4 and the fan 3, The reversing transmission mechanism can cause the fan 3 not to follow the reversing rotation of the motor 4 when the motor 4 is rotated in the reverse direction. .

Specifically, the drum 2 is disposed inside the casing 1, and the transmission of the drum 2 and one end of the motor 4 pass through the drum belt 9 Connected, the other end of the motor 4 is connected to the fan 3, the fan 3 is provided with air volume for the drum 2 for drying clothes, and the fan 3 is connected to the air inlet of the drum 2 through a duct or a duct, and the fan 3 can be directly disposed in the air duct or the wind. In the tube, the air duct is connected to the air inlet of the drum 2, and it should be understood by those skilled in the art that the duct or air duct described herein only guides the air from the fan 3 to the drum 2, and does not serve as a limit. A fixed form of the invention. The air outlet of the drum 2 can be directly connected to the outside.

A reversing transmission mechanism is arranged between the single machine and the fan 3. The reversing transmission mechanism is respectively connected with the rotating shaft of the motor and the rotating shaft of the fan. The function of the reversing transmission mechanism is: when the motor 4 is positive or negative, the fan 3 does not The forward and reverse rotations are performed in synchronization with the motor 4, and the control of the reversing transmission mechanism ensures that the fan 3 always rotates in one direction.

The reversing transmission mechanism includes a first driving wheel 511, a first driven wheel 512, a first driving shaft 513, a first driven shaft, a first control unit 514, a first ratchet 515, a second driving wheel 521, and a second driven wheel. 522. The second driving shaft 523, the second driven shaft, the second control unit, and the second ratchet 525. It should be noted that the second control unit is not shown in the drawing.

The first driving wheel 511 is connected to the motor 4, the first driving wheel 512 is connected to the fan 3, the first driving shaft 513 is connected to the first driving wheel 511, and the first driven shaft is connected to the first driven wheel 512. The driving shaft 513 is rotatably sleeved outside the first driven shaft, the first driven shaft and the first driving shaft 513 are relatively rotatable, the first control unit 514 is sleeved on the first driving shaft, and the first control unit 514 includes a first spring, a first electromagnetic block, a first coil, the first electromagnetic block and the first coil are connected by a first spring, and the first coil is fixed at an end of the first driving shaft 513 near the first driving wheel 511, the first electromagnetic block The first ratchet 515 is coupled to the first ratchet 515. The first driven wheel 512 is coupled to the first ratchet 515. The first ratchet 515 is axially slidably coupled to the first drive shaft 513. The first ratchet 515 can be coupled to the first drive wheel. The 511 rotates synchronously and can slide axially on the first drive shaft 513. When the first ratchet 515 drives the first driven wheel 512, the first ratchet 515 drives the first driven wheel 512 to rotate synchronously with the first driving wheel 511.

The second driving wheel 521 is meshed with the first driving wheel 511, the second driven wheel 522 is connected with the first driven wheel 512 via a belt 530, the second driving shaft 523 is connected with the second driving wheel 521, and the second driven shaft and the second The second driving shaft 522 is rotatably sleeved outside the second driven shaft, the second driven shaft and the second driving shaft 523 are relatively rotatable, and the second control unit is sleeved on the second driving shaft 523. The second control unit includes a second spring, a second electromagnetic block, and a second coil. The second electromagnetic block and the second coil are connected by a second spring. The second coil is fixed to the second driving shaft 523 and adjacent to the second driving wheel 521. The second electromagnetic block is connected to the second ratchet 525. The second driven wheel 523 is provided with a tooth groove that rotates with the second ratchet 525. The second ratchet 525 is slidably coupled to the second driving shaft 523. The second ratchet 525 is 525. The second driving wheel 521 can rotate synchronously and can slide axially on the second driving shaft 523. When the second ratchet 525 drives the second driven wheel 522, the second ratchet 525 drives the second driven wheel 522 to rotate synchronously with the second driving wheel 521.

Working principle of the reversing transmission mechanism:

When the motor 4 drives the first driving wheel 511 to rotate forward, the first coil in the first control unit 514 is in a power-off state, the first ratchet 515 is rebounded by the first spring, and the first ratchet 515 and the first driven wheel 512 are driven. When the second coil in the second control unit is energized, the second electromagnetic block is sucked by the second coil, the second ratchet 525 and the second driven wheel 522 are in a disengaged state, and the second driven wheel is not driven by the second ratchet 525, A driven wheel 512 drives the second driven wheel 522 to rotate forward through the belt 530. Since the first driven wheel 512 is driven by the first ratchet 515, the first driven wheel 512 drives the fan 3 to rotate forward.

When the motor 4 drives the first driving wheel 511 to reverse, the first driving wheel 511 meshes with the second driving wheel 521, the second driving wheel 521 is forward rotation, the first coil in the first control unit 514 is energized, and the first coil is engaged. The first electromagnetic block, the first spring is compressed, so that the first ratchet 515 is disengaged from the first driven wheel 512. At this time, the first driven wheel 512 is not driven by the first ratchet 515, and the second coil in the second control unit is powered off. The second ratchet 525 is driven by the second driven wheel 522, the second driven wheel 522 is synchronously rotated with the second driving wheel 521, and the second driven wheel 525 drives the first driven wheel 515 to rotate forward through the belt 530, so that the first driven wheel 512 is rotated. Drive the fan forward.

When the motor 4 rotates forward, the reversing transmission mechanism does not work, the motor 4 drives the drum 2, and the fan 3 rotates forward together. When the motor 4 reverses, the reversing transmission mechanism works, and the motor 4 drives the drum 2 to reverse, due to the reversal The reversal of the transmission mechanism causes the fan 3 to still rotate forward, ensuring that the fan 3 always rotates in one direction during the commutation operation, providing a unidirectional stable air volume for the drum 2, thereby causing the drum 2 to rotate forward and reverse alternately. It is carried out to prevent the clothes from being entangled, and the fan 3 provides the unidirectional stable air volume for the drum 2, thereby improving the drying efficiency.

In order to increase the air supply volume and the air supply efficiency of the fan 3, the fan 3 in this embodiment uses a centrifugal fan, and the blade adopts a curved blade. When the fan 3 can always run in one direction, it is no longer necessary to use a conventional straight leaf. The leaf fan has a larger air volume and a better drying efficiency. The two axial end faces of the fan 3 are air inlet faces, and the radial circumferential curved surface of the fan 3 is an air outlet surface, and the air inlet channel is connected with the air outlet surface, and the air inlet surface can directly communicate with the outside or the air outlet channel. connection.

In this embodiment, a reversing transmission mechanism is connected in series between the motor 4 and the fan 3, so that the fan 3 can always maintain a positive rotation when the motor 4 rotates forward and reverse. Therefore, the fan 3 can provide a fixed direction for the drum 2. The wind ensures that the fan 3 can always provide a one-way stable air volume to the drum 2 when the drum 2 is being reversed.

Embodiment 2

The embodiment is further defined by the first embodiment. The dryer drive system further includes a heater 6, a condenser 7, and a filter 8. The heater 6 is connected in series between the fan 3 and the air inlet. The condenser 7 is connected to the air outlet of the drum 2 through an air outlet provided in the casing 1, and a filter 8 is connected in series between the condenser 7 and the air outlet, and the fan 3, the motor 4, and the condenser 7 are arranged in a line. At the bottom of the casing 1, the casing 1 is provided with an outer air outlet for providing an external wind to the fan 3. Wherein, the fan 3 is disposed in the air inlet duct, and the air inlet duct, the drum 2 and the air outlet duct are connected to form a loop, and a circulation air path is formed, and the commutation transmission of the embodiment The moving mechanism is a reversing clutch 5, and the working principle of the reversing clutch 5 is similar to the working principle of the above-mentioned reversing transmission mechanism, and can control the on/off of the reversing clutch 5, so that the fan 3 is always maintained when the motor 4 is rotated in the reversing direction. Rotate in one direction.

Specifically, the intake air delivered by the fan 3 can increase the temperature under the heating of the heater 6, accelerate the drying process, and set the circuit, thereby improving the utilization rate of the hot air and saving energy. At a certain temperature, a certain amount of air can only contain a certain amount of water vapor. When it exceeds this limit, it becomes saturated, and the clothes cannot be dried. Therefore, the condenser 7 is provided to rapidly turn the high-temperature air into hot and humid air to form liquid water droplets. Dehumidifying the air in the circuit helps to improve the drying efficiency.

When applying, the dryer is started by the control device, the motor drives the drum and the fan to rotate forward at the same time, and the reversing clutch 5 is in the non-working state, the fan sucks the natural wind from the outer air outlet at the bottom of the housing, and the natural air through the air inlet passage After the wind is sent to the heater to heat, hot air is formed. The hot air enters the drum through the air inlet to dry the clothes, and then the hot humid air is discharged from the drum through the air outlet. After passing through the air inlet, the filter and the condenser are sequentially passed through the filter. The wire, hair and other debris are filtered, the condenser liquefies the wet hot air to remove the moisture to form a dry wind, and then the dry wind is sent to the air inlet end face of the fan through the air outlet to perform subsequent work for the fan, thus forming an internal air circulation. It can improve the heat utilization of the wind and save energy. When the motor reverses and the drum is reversed, the reverse clutch 5 operates, and the fan still rotates forward, repeating the above-described wind direction cycle.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any technology that is familiar with the present patent. Those skilled in the art can make some modifications or modifications to equivalent embodiments by using the technical content of the above-mentioned hints without departing from the technical scope of the present invention, but the technology according to the present invention does not deviate from the technical solution of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the present invention.

Claims

A clothes dryer transmission system, comprising: a drum for holding laundry, a fan for blowing air to the drum, and a motor for driving the drum, wherein the motor is connected with the fan and drives the fan to rotate, the motor and the motor A reversing transmission mechanism is connected between the fans, and the reversing transmission mechanism can prevent the fan from rotating in the reverse direction of the motor when the motor is rotated in the reverse direction.
The clothes dryer transmission system according to claim 1, wherein the reversing transmission mechanism comprises a first driving wheel and a first driven wheel, and the first driving wheel is coupled to the motor, The first driven wheel is connected to the fan, and the first driving wheel and the first driven wheel are drivingly connected by the first transmission device, and the first transmission device is arranged to cause the first driving wheel to stop and be driven under the action of an external force. The first driven wheel.
A dryer drive system according to claim 2, wherein said first transmission comprises a first drive shaft, a first driven shaft, said first drive shaft and said first drive wheel Connecting, the first driven shaft is coupled to the first driven wheel, the first driving shaft is rotatably sleeved outside the first driven shaft, and the first driving shaft is sleeved on the first a first connecting unit that axially slides the driving shaft, and the first connecting unit is configured to drive and connect the first driving wheel and the first driven wheel when the first driving shaft is axially slid to a certain position.
A dryer drive system according to claim 3, wherein said first transmission further comprises a first control unit for controlling axial displacement of the first coupling unit in the first drive shaft, The first control unit includes a first spring, a first electromagnetic block, and a first coil. The first electromagnetic block is connected to the first coil by a first spring, and the first coil is fixed to the first driving shaft. One end of the first driving wheel, the first electromagnetic block is connected to the first connecting unit.
A clothes dryer transmission system according to claim 2, wherein said reversing transmission mechanism further comprises a second driving wheel and a second driven wheel, said second driving wheel and said first driving wheel Engaging the transmission connection, the second driven wheel and the first driven wheel are connected by a belt or a chain, and the second driving wheel and the second driven wheel are drivingly connected by the second transmission, the second transmission device is arranged Under the action of external force, the second driving wheel and the second driven wheel stop driving.
A dryer drive system according to claim 5, wherein said second transmission comprises a second drive shaft, a second driven shaft, said second drive shaft and said second drive wheel Connecting, the second driven shaft is coupled to the second driven wheel, the second driving shaft is rotatably sleeved outside the second driven shaft, and the second driving shaft is sleeved on the second a second connecting unit that axially slides the driving shaft, and the second connecting unit is configured to drive the second driving wheel and the second driven wheel when the second driving shaft is axially slid to a certain position.
A dryer drive system according to claim 6 wherein said second transmission further includes a second control unit for controlling axial displacement of the second coupling unit in the second drive shaft, The second control unit includes a second spring, a second electromagnetic block, a second coil, the second electromagnetic block and the second coil are connected by a second spring, and the second coil is fixed at an end of the second driving shaft close to the second driving wheel, The second electromagnetic block is connected to the second connecting unit.
A dryer drive system according to claim 2 or 3, wherein said first connecting unit is a ratchet, and said first driven wheel is provided with a tooth groove that rotates in cooperation with the ratchet.
A dryer drive system according to claim 6 or 7, wherein said second connecting unit is a ratchet, and said second driven wheel is provided with a tooth groove that rotates in cooperation with the ratchet.
A dryer drive system according to claim 1, wherein said fan is a centrifugal fan, and said fan of said centrifugal fan is a curved leaf.