Clothes dryer using double-rotor variable frequency motor

Abstract

The clothes dryer using the double-rotor variable frequency motor comprises the variable frequency motor, a fan impeller and an inner roller, the output ends of the two sides of the variable frequency motor are provided with a first rotor shaft and a second rotor shaft respectively, the first rotor shaft is in driving connection with the inner roller through a transmission mechanism, and the second rotor shaft is connected with the fan impeller in a sleeved mode; wherein the variable-frequency motor is electrically connected with the variable-frequency plate, and a rotor shaft I on the variable-frequency motor is controlled to rotate forwards and backwards through the variable-frequency plate, so that the inner roller is subjected to isochronous forward and backward rotation or unisochronous forward and backward rotation. In the using process of the clothes dryer, the state of clothes in the inner roller is effectively changed, the situation that the clothes are wound due to single-direction rotation is avoided, the clothes can be effectively shaken to be scattered in the drying process, the drying efficiency is improved, the drying time is shortened, the energy consumption is reduced, damage to the clothes can be avoided, and the clothes dryer is suitable for popularization and application. And the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dryer structures, and particularly relates to a dryer using a dual-rotor variable-frequency motor. Background Art

[0002] Compared with the traditional washing and drying integrated washing machine for drying clothes, the dryer can perform more efficient drying by relying on the heat pump system. At the same time, the low-temperature environment provided by the heat pump system can better protect the clothes and will not damage the clothes fibers.

[0003] However, most dryers on the market at present are fixed-frequency motors. The fixed-frequency motor drives the fan and the inner drum to rotate together, so that the inner drum cannot make forward and reverse rotation movements. When the inner drum rotates in reverse, the fan will rotate in reverse together, resulting in the fan being unable to effectively provide circulating air, greatly reducing the dehumidification effect. To solve this problem, the strategy adopted by most products is to rotate forward for a long time and reverse for a very short time to avoid this problem. The long-term operation of the inner drum in one direction will cause serious entanglement of the clothes, resulting in wrinkling and damage of the clothes. At the same time, the entanglement of the clothes also reduces the drying efficiency and prolongs the drying time. Moreover, the method of rotating forward for a long time and reversing for a very short time not only takes time but also increases energy consumption, and may also damage the clothes fibers, bringing a bad experience to users. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dryer using a dual-rotor variable-frequency motor to solve the problem of poor drying effect caused by using a fixed-frequency motor to drive the inner drum in the existing dryer.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A dryer using a dual-rotor variable-frequency motor includes a variable-frequency motor, a fan impeller and an inner drum. Rotor shafts one and two are respectively arranged at both output ends of the variable-frequency motor. The rotor shaft one is drivingly connected to the inner drum through a transmission mechanism, and the rotor shaft two is sleeved and connected to the fan impeller;

[0007] Wherein, the variable-frequency motor is electrically connected to a variable-frequency board, and the positive and reverse rotations of the rotor shaft one on the variable-frequency motor are controlled through the variable-frequency board to realize the equal-time positive and reverse rotations or unequal-time positive and reverse rotations of the inner drum.

[0008] As a further scheme of the utility model: when controlling the variable-frequency motor through the variable-frequency board, the rotor shaft one and the rotor shaft two respectively output rotation torques independently.

[0009] As a further scheme of the utility model: the rotation direction of the fan impeller connected to the rotor shaft two is set to rotate in a single direction through the variable-frequency board.

[0010] As a further solution of the present utility model: the fan impeller is a centrifugal fan impeller.

[0011] As a further solution of the present utility model: the driving mechanism includes a driving wheel sleeved and connected on the first rotor shaft, the driving wheel is drivingly connected to a transmission wheel through a first belt, the transmission wheel is rotatably connected to the top of the motor bracket through a transmission shaft, and the transmission wheel is drivingly connected to an inner drum through a second belt.

[0012] As a further solution of the present utility model: a variable-frequency motor is fixedly installed on the motor bracket, and the motor bracket is fixedly installed on the whole machine base.

[0013] Advantages of the present utility model:

[0014] (1) During the use of the dryer of the present application, in order to effectively solve the problem of the forward and reverse rotation of the inner drum of the dryer, a variable-frequency motor is installed in the dryer, and under the control of the frequency conversion board, the inner drum can perform isochronous forward and reverse rotation or non-isochronous forward and reverse rotation, effectively changing the state of the clothes in the inner drum, avoiding the entanglement caused by single-direction rotation, effectively shaking and dispersing the clothes during the drying process, improving the drying efficiency, shortening the drying time, achieving the purpose of reducing energy consumption, and avoiding damage to the clothes, thus improving the user experience;

[0015] (2) Under the control of the frequency conversion board, the inner drum can perform isochronous forward and reverse rotation or non-isochronous forward and reverse rotation, which can be specifically selected and adjusted according to the quantity and type of the clothes to be dried in the inner drum;

[0016] (3) During the use of the dryer of the present application, the variable-frequency motor installed in the dryer can be compatible with the function of a fixed-frequency motor. Under the control of the frequency conversion board, only the first rotor shaft output by the variable-frequency motor needs to be controlled in a single rotation direction, which helps to improve the compatibility function and application function of the dryer;

[0017] (4) When controlling the variable-frequency motor through the frequency conversion board, the first rotor shaft and the second rotor shaft respectively output rotational torque independently. Since the first rotor shaft drives the inner drum to rotate and the second rotor shaft drives the fan impeller to rotate, the first rotor shaft and the second rotor shaft are respectively controlled independently, so that under the control of the frequency conversion board, not only can the problem of the forward and reverse rotation of the inner drum be effectively solved, but also the rotation of the fan impeller will not be affected. Description of the Drawings

[0018] The following further describes the present utility model with reference to the drawings.

[0019] Figure 1 is the structural schematic diagram of the present utility model;

[0020] Figure 2 It is a side view of the present utility model.

[0021] In the figure: 1, variable-frequency motor; 100, first rotor shaft; 110, second rotor shaft; 2, inner drum; 3, fan impeller; 4, drive wheel; 5, transmission wheel; 6, first belt; 7, transmission shaft; 8, second belt; 9, motor bracket; 10, whole machine base. Specific embodiments

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model; in the description of the present utility model, the meanings of "a plurality" and "several" are at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] Please refer to Figure 1 and Figure 2 As shown, the present utility model is a clothes dryer using a dual-rotor variable-frequency motor, including a variable-frequency motor 1, a fan impeller 3 and an inner drum 2. The two output ends of the variable-frequency motor 1 are respectively provided with a first rotor shaft 100 and a second rotor shaft 110. The first rotor shaft 100 is drivingly connected to the inner drum 2 through a transmission mechanism, and the second rotor shaft 110 is sleeved and connected to the fan impeller 3; wherein, the variable-frequency motor 1 is electrically connected to a variable-frequency board, and the positive and reverse rotations of the first rotor shaft 100 on the variable-frequency motor 1 are controlled through the variable-frequency board to realize the isochronous positive and reverse rotations or non-isochronous positive and reverse rotations of the inner drum 2.

[0025] During the use of the dryer of the present application, in order to effectively solve the problem of forward and reverse rotation of the drum 2 in the dryer, a variable frequency motor 1 is installed in the dryer, and rotor shaft 1 100 and rotor shaft 2 110 are respectively arranged at the output ends on both sides of the variable frequency motor 1. Under the control of the frequency conversion board, the rotor shaft 100 on the variable frequency motor 1 performs forward and reverse rotation to realize the isochronous forward and reverse rotation or unequally timed forward and reverse rotation of the inner drum 2, which effectively changes the state of the clothes in the inner drum 2 and avoids the entanglement caused by single-direction rotation. The clothes can be effectively shaken out during the drying process, thereby improving the drying efficiency and shortening the drying time, reducing energy consumption, avoiding damage to the clothes, and improving the user experience.

[0026] It should be understood that during the implementation of the isochronous forward and reverse rotation or unequal forward and reverse rotation of the inner drum 2, if the inner drum 2 performs isochronous forward and reverse rotation, it is to drive the inner drum 2 to rotate forward for a certain period of time and reverse for the same period of time, so that the inner drum 2 can cyclically perform isochronous forward and reverse rotation; if the inner drum 2 performs unequal forward and reverse rotation, it is to drive the inner drum 2 to rotate forward and reverse at different times, so that the inner drum 2 can cyclically perform unequal forward and reverse rotation.

[0027] In this specific implementation, when the variable frequency motor 1 is controlled by the frequency conversion board, the rotor shaft 1 100 and the rotor shaft 2 110 output the rotational torque separately. Since the rotor shaft 100 drives the inner drum 2 to rotate and the rotor shaft 2 110 drives the fan impeller 3 to rotate, the rotor shaft 100 and the rotor shaft 2 110 output the control separately, so that under the control of the frequency conversion board, not only the forward and reverse rotation problem of the inner drum 2 can be effectively solved, but also the rotation of the fan impeller 3 will not be affected.

[0028] In this specific embodiment, the rotation direction of the fan impeller 3 connected to the rotor shaft 110 is set to a unidirectional rotation direction by the frequency conversion board. The fan impeller 3 is a centrifugal fan impeller, and is not limited to a centrifugal fan. Under the control of the frequency conversion board, the fan impeller 3 rotates in one direction. Based on the shape of the fan blades of the fan impeller 3, the fan movement direction needs to be in a single counterclockwise direction. If it is reversed, the fan cannot generate the target wind speed, which will seriously affect the circulating wind and reduce the performance of the whole machine.

[0029] In this specific embodiment, the transmission mechanism includes a driving wheel 4 which is sleeved and connected to the rotor shaft 100. The driving wheel 4 is connected to the transmission wheel 5 through a belt 6. The transmission wheel 5 is rotatably connected to the top of the motor bracket 9 through a transmission shaft 7. The transmission wheel 5 is connected to the inner drum 2 through a belt 8. The variable frequency motor 1 controls the forward and reverse rotation of the rotor shaft 100, so that the inner drum 2 can be driven to perform forward and reverse movements through the transmission mechanism.

[0030] In this specific embodiment, a variable-frequency motor 1 is fixedly installed on a motor bracket 9, and the motor bracket 9 is fixedly installed on a whole-machine base 10, so that the installation of the variable-frequency motor 1 and the motor bracket 9 is convenient.

[0031] It should be understood that the variable-frequency motor 1 is controlled accordingly through a variable-frequency board, so that the rotation directions and speeds of a first rotor shaft 100 and a second rotor shaft 110 can be controlled respectively. Not only can the operating speed of the fan impeller 3 be adjusted to obtain different drying air speeds, but also the operating direction, speed and time of the inner drum 2 can be freely switched between forward and reverse, achieving the purpose of equal-time or unequal-time forward and reverse rotation.

[0032] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the patent coverage scope of the present invention.

Claims

1. A dryer using a dual-rotor variable-frequency motor, characterized in that, It includes a variable-frequency motor (1), a fan impeller (3) and an inner drum (2). Rotor shafts one (100) and two (110) are respectively arranged at both output ends of the variable-frequency motor (1). The rotor shaft one (100) is drivingly connected to the inner drum (2) through a transmission mechanism, and the rotor shaft two (110) is sleeved and connected to the fan impeller (3). Among them, the variable-frequency motor (1) is electrically connected to a variable-frequency board, and the forward and reverse rotations of the rotor shaft one (100) on the variable-frequency motor (1) are controlled through the variable-frequency board to enable the inner drum (2) to perform isochronous forward and reverse rotations or non-isochronous forward and reverse rotations.

2. The dryer using a dual-rotor variable-frequency motor according to claim 1, characterized in that When controlling the variable-frequency motor (1) through the variable-frequency board, the rotor shaft one (100) and the rotor shaft two (110) respectively output rotational torques independently.

3. The dryer using a dual-rotor variable-frequency motor according to claim 2, characterized in that, The rotational direction of the fan impeller (3) connected to the rotor shaft two (110) is set to rotate in a single direction through the variable-frequency board.

4. The dryer using a dual-rotor variable-frequency motor according to claim 3, wherein The fan impeller (3) is a centrifugal fan impeller.

5. The dryer using a dual-rotor variable-frequency motor according to claim 1, characterized in that, The transmission mechanism includes a driving wheel (4) sleeved on the rotor shaft one (100). The driving wheel (4) is drivingly connected to a transmission wheel (5) through a first belt (6). The transmission wheel (5) is rotationally connected to the top of a motor bracket (9) through a transmission shaft (7), and the transmission wheel (5) is drivingly connected to the inner drum (2) through a second belt (8).

6. The dryer using a dual-rotor variable-frequency motor according to claim 5, wherein The variable-frequency motor (1) is fixedly installed on the motor bracket (9), and the motor bracket (9) is fixedly installed on the whole machine base (10).

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