WO2017071638A1

WO2017071638A1 - Clothes-drying machine

Info

Publication number: WO2017071638A1
Application number: PCT/CN2016/103756
Authority: WO
Inventors: 李怡锦; 成荣锋
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2015-10-28
Filing date: 2016-10-28
Publication date: 2017-05-04
Also published as: EP3369858A1; EP3369858B1; KR20180074764A; JP2018531754A; CN106637872A; EP3369858A4; CN106637872B; US20190203406A1

Abstract

A clothes-drying machine comprises: a drying drum; a motor driving the drying drum to rotate; and a dryer (3) providing hot air to the drying drum. The dryer (3) comprises: a spiral case (31); and a fan (32) disposed inside the spiral case (31) and also driven to rotate by the motor. The motor is capable of rotating clockwise and counterclockwise, and drives the drying drum as well as the fan (32) to rotate clockwise or counterclockwise. An amount of air current produced by the fan (3) rotating clockwise is equal to that produced when the fan (3) rotates counterclockwise. The drying drum capable of rotating clockwise and counterclockwise can effectively untangle and dry clothes therein, thereby increasing drying efficiency and drying the clothes more evenly.

Description

Clothes dryer

Technical field

The invention relates to a clothes dryer and belongs to the field of clothes dryers.

Background technique

The general circulation mode of the clothes dryer is as follows: the motor drives the drying fan to rotate, so that the air inside the dryer flows to form a wind in the air passage. After the wind at normal temperature is heated to become dry hot air, it enters the drying drum and contacts the wet clothes in the cylinder, and takes the moisture on the clothes, until the clothes in the cylinder are dried, and the effective circulation of the wind is visible. The working efficiency of the machine has a great influence. The wind is formed by the fan 12 of the drying fan 1 rotating in the volute 11 to generate air pressure and then enter the air path to start the circulation.

As shown in FIG. 1 and FIG. 2, the fan of the conventional dryer drying drum and the drying fan 1 is unidirectionally rotated, and the effective airflow direction provided is a single direction, and the fan blade and the volute 11 shape of the drying fan 1 are provided. The design is based on the principle of involute, the direction of rotation of the fan 12 is rotating towards the volute of the volute (the direction of rotation of the fan is counterclockwise). Since the drying drum rotates in one direction, the clothes in the drum are entangled with each other, and cannot be completely dispersed and unfolded, resulting in low drying efficiency, uniform drying uniformity, and uneven drying of the dried clothes.

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 clothes dryer, wherein the drying drum and the drying fan can both be reversed and reversed to improve the drying efficiency and uniformity of laundry drying.

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

The clothes dryer comprises a drying drum, a drum motor for driving the drying drum to rotate, and a drying fan for providing a drying wind for the drying drum. The drying fan comprises a volute, a fan disposed in the volute and a driving fan rotating The drying motor, the drum motor and the drying motor are the same motor. The motor is a positive and negative motor, the driving drying drum is reversed, the fan is reversed, and the fan provides the same amount of air in both positive and negative conditions.

Further, the volute of the drying fan comprises two parts, a first housing and a second housing, the two parts are fastened along the axial direction of the fan to form a volute, and the first housing is provided with an air inlet along the axial direction of the fan. An air outlet is arranged on the volute along the radial direction of the fan.

Further, the second housing of the drying fan volute includes a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprising a circular-like contour composed of a plurality of involute profiles, wherein the circular contour is provided with an opening The two sides of the opening are respectively provided with a straight plate, and the two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form a volute air outlet; the fan is located in the circular contour .

Further, the second housing of the drying fan volute includes a bottom plate and a side panel mounted on one side of the bottom plate, the side panel includes a circular contour, and the circular contour is provided with an opening, and the two sides of the opening are respectively provided with an outer side The straight plate, the two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form a volute air outlet, and the fan is located in the circular contour and is located at the center of the circular contour.

Further, the first housing of the drying fan volute has a U-shaped contour that cooperates with the second volute.

Further, the clothes dryer is a dryer having a condensing function, and further comprises a condenser and a condensing fan, wherein the condensing fan provides a cooling cold air for the condenser, the condensing fan comprises a volute, a fan disposed in the volute and driving the fan to rotate The condensing motor, the condensing motor is the same motor as the drum motor and the drying motor, and the condensing fan provides the same amount of air as the drying motor is reversing and in both cases.

Further, the volute of the condensing fan comprises a first part and a second part, the two parts are fastened along the axial direction of the fan to form a volute, and the first housing is provided with an air inlet along the axial direction of the fan, and the volute An air outlet is arranged on the casing along the radial direction of the fan.

Further, the second housing of the condensing fan volute includes a bottom plate and a side panel mounted on one side of the bottom plate, and the side panel includes a circular-like contour composed of a plurality of involute profiles, and an opening is formed in the circular contour. The two sides of the opening are respectively provided with a straight plate, and the two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form a volute air outlet; the fan is located in the circular contour.

Further, the second housing of the condensing fan volute includes a bottom plate and a side panel mounted on one side of the bottom plate, the side panel includes a circular contour, and the circular contour is provided with an opening, and the opening is provided with two straight plates respectively The U-shaped profile is formed tangent to the circular contour on both sides of the opening, and a volute air outlet is formed between the two straight plates, and the fan is located in the circular contour and is located at the center of the circular contour.

Further, the first housing of the condensing fan volute has a U-shaped profile that cooperates with the second volute.

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

The clothes dryer of the invention comprises a drying fan and a drying roller, and the air outlet of the drying fan is connected to the air inlet of the drying drum through the air duct. The drying fan includes a volute, a fan and a drying motor that drives the fan to rotate. The drying roller and the drying fan can both be reversed and driven by the same motor to save costs. Since the drying drum can rotate forward and backward, the clothes in the drying drum can be more effectively shaken, so that the drying is more uniform and the drying efficiency is higher.

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

DRAWINGS

1 is a schematic view showing the installation of a drying fan and a condensing fan in a dryer in the prior art.

2 is a schematic view showing the installation of a drying fan in the prior art in a clothes dryer.

Fig. 3 is a schematic view showing the installation of a condenser fan in the prior art in a clothes dryer.

Figure 4 is a schematic view showing the installation of the drying fan in the dryer in the present invention.

Fig. 5 is an enlarged schematic view showing C of Fig. 4;

Figure 6 is a schematic view showing the installation of a condensing fan in the present invention in a clothes dryer.

Figure 7 is an enlarged schematic view of B of Figure 6.

Figure 8 is a schematic view showing the installation of the drying fan in the clothes dryer of the fourth and sixth embodiments of the present invention.

Figure 9 is an enlarged schematic view of D of Figure 8.

1. Drying fan 11, volute 12, fan 2. Condensing fan 21, volute 22, fan 3, drying fan 31, volute 32, fan 33, gap 34, clearance 4, condensation fan 41, volute 42 , fan 5, condenser.

detailed description

Since the drying drum of the existing clothes dryer can only rotate in one direction, the degree of dishing of the clothes in the drum is limited, in order to make the clothes shake more, improve the drying efficiency and improve the drying uniformity, the invention The dryers of the drying machine, the drying drum and the drying fan 3 can all be reversed, and the air volume provided when the fan is reversed is equal. This structure can be applied to various types of drying drums and drying. Fan dryer.

Embodiment 1

Some dryers are in-line dryers. The indoor air in the room where the dryer is located is sucked into the drying fan 3 of the dryer through the air inlet of the dryer, and is installed in the heating device in the drying air passage. After heating, enter the drying drum of the dryer through the drying air passage, and dry the clothes in the drying drum, then discharge the dryer through the air outlet of the dryer, and cycle the above actions to realize the drying of the clothes. . The clothes dryer of the present invention may be a dryer of the type comprising a drying drum, a drum motor for driving the drying drum, and a drying fan for providing a drying wind for the drying drum, the drying fan including the volute a fan disposed in the volute and a drying motor for driving the fan to rotate, the drum motor and the drying motor are the same motor, the motor is a positive and negative motor, the driving drying drum is reversed, the fan is reversed, and the fan The amount of air supplied in both cases of positive and negative is equivalent.

The volute of the drying fan of the dryer comprises two parts, a first housing and a second housing, the two parts are fastened along the axial direction of the fan to form a volute, and the first housing is provided with the axial direction of the fan. The bell mouth type air inlet has an air outlet along the radial direction of the fan on the volute. The second casing of the drying fan volute comprises a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprises a circular contour, and the circular contour is provided with an opening, and the two sides of the opening are respectively provided with a straight plate, two The straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped profile, and a volute air outlet is formed between the two straight plates, and the fan is located in the circular contour and is located at the center of the circular contour. The first housing of the drying fan volute has a U-shaped profile that cooperates with the second volute.

Embodiment 2

Some dryers are heat pump dryers, including a drying drum, a drum motor that drives the drying drum to rotate, and a drying fan that provides a drying wind for the drying drum. The drying fan and the drying drum are closed. The circulation air passage is connected, and a heat exchanger is disposed in the circulation air passage between the air outlet of the drying fan and the air inlet of the drying drum. The drying fan comprises a volute, a fan disposed in the volute and a drying motor for driving the fan to rotate, the drum motor and the drying motor are the same motor, the motor is a positive and negative motor, and the driving drying drum is reversed, The fan is reversing, and the fan provides the same amount of air in both positive and negative conditions.

Embodiment 3

Some dryers are dryers with a condensing function, and such dryers are also provided with a condenser and a condenser fan.

The clothes dryer of the invention comprises a drying drum, a drum motor for driving the drying drum to rotate, a drying fan 3, a condenser 5, a condensation fan 4, and an air outlet of the drying fan 3 is connected to the air inlet of the drying drum through the air duct. .

The drying drum, the condenser 5, and the drying fan 3 are sequentially connected through the air passage to form a drying circulation air passage, and the condensation fan 4 provides the condenser 5 with cooling and cooling air. The gas in the drying circulation air passage is isolated from the cooled cold air passing through the condenser 5.

As shown in FIGS. 4 and 5, the drying fan 3 includes a volute 31, a fan 32, and a drying motor that drives the fan to rotate. The central axis of the volute 31 is coaxial with the central axis of the fan 32. Both the volute 31 and the fan 32 have a symmetrical structure.

The volute 31 of the drying fan 3 includes two parts, a first housing and a second housing. The two parts are fastened along the axial direction of the fan to form a volute, and the first housing is provided with a bell-shaped shape along the axial direction of the fan. The tuyere has an air outlet along the radial direction of the fan on the volute. The bell mouth type air inlet means that the air inlet has a small diameter toward the end of the fan, and the end facing away from the fan has a large diameter and is shaped like a bell mouth.

The second casing of the drying fan volute 31 comprises a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprising a circular contour, wherein the circular contour is provided with an opening, and the two sides of the opening are respectively provided with a straight plate. The two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and a volute air outlet is formed between the two straight plates, and the fan 32 is located in the U-shaped contour and is located at the center of the circular contour.

The first housing of the drying fan volute has a U-shaped profile that cooperates with the second volute.

The fan blade of the fan 32 of the drying fan 3 is a straight fan blade, and the blade extends radially along the fan, and the blade leaf surface is parallel to the central axis of the fan 32, that is, the rotation axis.

6 and 7, the condensing fan 4 includes a volute 41, a fan 42 and a condensing motor that drives the fan to rotate. The central axis of the volute 41 is coaxial with the central axis of the fan 42, and the volute 41 and the fan 42 are symmetric structures. .

The volute 41 of the condensing fan 4 includes a first housing and a second housing. The two portions are fastened along the axial direction of the fan to form a volute, and the first housing is provided with a bell-shaped air inlet along the axial direction of the fan. An air outlet is arranged on the volute along the radial direction of the fan.

The second casing of the volute 41 of the condensation fan 4 comprises a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprising a circular profile, wherein the circular profile is provided with an opening, and the two sides of the opening are respectively provided with a straight plate The two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form a volute air outlet, and the fan is located in the circular contour and is located at the center of the circular contour. The first housing of the volute 41 of the condensation fan 4 has a U-shaped profile that cooperates with the second volute.

The fan blades of the condenser fan 4 are straight blades, the blades extend radially along the fan 42, and the blade faces are parallel to the central axis of the fan 42.

The condensation fan in the present invention is different from the existing condensation fan of the dryer having the condenser and the condensation fan. In the existing such clothes dryer, as shown in FIG. 3, the fan blade and the volute of the condensation fan 2 are shown in FIG. The 21-shape design is based on the principle of involute, and the direction is the same as the direction in which the fan 22 rotates.

A heating device is disposed in the drying circulation air passage between the condenser and the drying fan.

In order to reduce the complexity of the dryer equipment and reduce the energy consumption, the condensing motor is the same motor as the drum motor and the drying motor, so that the fan of the drying drum, the drying fan and the fan of the condensing fan can rotate together in the same direction.

The clothes dryer of the invention comprises a drying fan, a drying drum, a condenser, a condensation fan, and a drying fan outlet The air passage is connected to the air inlet of the drying drum. The drying drum, the condenser and the drying fan are sequentially connected through the air passage to form a drying circulation air passage, and the condensation fan provides cooling and cooling air for the condenser. The drying fan comprises a volute and a fan, the central axis of the volute is coaxial with the central axis of the fan, the condensation fan comprises a volute and a fan, the central axis of the volute is coaxial with the central axis of the fan, the condensing motor and the drum motor, the drying motor For the same motor, reduce the load on the equipment and reduce energy consumption. The drying drum, the fan of the drying fan and the fan of the condensation fan can both be reversed. Since the drying drum can rotate forward and backward, the clothes in the drying drum can be more effectively shaken, making the drying more uniform. , drying efficiency is higher. The drying fan supplies power to the drying circulating air in and out of the drying drum, and the condensing fan provides cooling and cooling air to the condenser, so that the damp heat drying circulating air coming out of the drying drum is cooled and dehumidified at the condenser. The shape of the volute and the fan blade of the drying fan and the condensing fan are symmetrical. When the drying drum is reversing, the drying fan can effectively provide power to circulate the gas in the drying drum through the drying circulating air passage, and the condensing fan Both provide effective power to allow the lower temperature air outside the dryer to flow to the condenser. It does not provide an effective air volume for both directions of rotation when the drying fan and the condensing fan in the existing dryer are reversed due to the involute design of the volute and the fan.

Embodiment 4

The difference between this embodiment and the first, second or third embodiment is:

As shown in FIGS. 8 and 9, the second casing of the volute 31 of the drying fan 3 includes a bottom plate and a side panel mounted on one side of the bottom plate, and the side panel includes a circular-like contour composed of a plurality of involute profiles. The circular contour is provided with an opening, and the two sides of the opening are respectively provided with a straight plate, and the two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form a volute air outlet. The fan 32 is located within a circular-like profile, and the central axis of the fan 32 is located on the side of the circular-like contour center away from the air outlet. That is, the gap 33 between the volute 31 and the fan 32 gradually increases from the bottom of the U-shaped profile toward the air outlet, and a better wind pressure can be formed to increase the circulating air flow.

Embodiment 5

The difference between this embodiment and the third embodiment is:

The second housing of the volute 41 of the condensation fan 4 comprises a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprising a circular-like contour composed of a plurality of involute profiles, wherein the circular contour is provided with an opening. The two sides of the opening are respectively provided with a straight plate, and the two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form an air outlet of the volute 41; the fan 42 is located in a circular shape. The central axis of the fan 42 is located on the side of the circular-like contour center away from the air outlet. That is, the gap between the volute 41 and the fan 42 gradually increases from the bottom of the U-shaped profile toward the air outlet, and a better wind pressure can be formed to increase the circulating air flow.

Embodiment 6

The difference between this embodiment and the third embodiment is:

As shown in FIGS. 8 and 9, the second casing of the volute 31 of the drying fan 3 includes a bottom plate and a side panel mounted on one side of the bottom plate, and the side panel includes a circular-like contour composed of a plurality of involute profiles. The circular contour is provided with an opening, and the two sides of the opening are respectively provided with a straight plate, and the two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form a volute air outlet. The fan 32 is located within a circular-like profile, and the central axis of the fan 32 is located on the side of the circular-like contour center away from the air outlet. That is, the gap 33 between the volute 31 and the fan 32 gradually increases from the bottom of the U-shaped profile toward the air outlet, and a better wind pressure can be formed to increase the circulating air flow. The gap 33 is the smallest gap between the volute 31 and the fan 32, and the gap 34 is a gap between the volute 31 and the fan 32 adjacent to the air outlet, and the gap gradually increases from the gap 33 to the gap 34.

The embodiments of the present invention may be further combined or substituted, and the embodiments are merely described for the preferred embodiments of the present invention, and are not intended to limit the scope and scope of the present invention. Various changes and modifications made by those skilled in the art to the technical solutions of the present invention are within the scope of the present invention.

Claims

The clothes dryer comprises a drying drum, a drum motor for driving the drying drum to rotate, and a drying fan for providing a drying wind for the drying drum. The drying fan comprises a volute, a fan disposed in the volute and a driving fan rotating Drying the motor, the drum motor and the drying motor are the same motor.

The utility model is characterized in that: the motor is a positive-reverse motor, the driving drying drum is reversed, the fan is reversed, and the fan provides the same amount of air in both the forward and reverse directions.
The clothes dryer of claim 1 wherein:

The volute of the drying fan comprises a first part and a second part, and the two parts are fastened along the axial direction of the fan to form a volute.

An air inlet is arranged on the first housing along the axial direction of the fan, and an air outlet is arranged on the volute in the radial direction of the fan.
The clothes dryer of claim 1 wherein:

The second casing of the drying fan volute comprises a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprising a circular-like contour composed of a plurality of involute profiles, wherein the circular contour has an opening and two openings The side plates are respectively provided with a straight plate, and the two straight plates are respectively cut into a U-shaped contour tangential to the circular contours on both sides of the opening, and the two straight plates communicate with the opening to form a volute air outlet; the fan is located in the circular shape.
The clothes dryer of claim 1 wherein:

The second casing of the drying fan volute comprises a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprises a circular contour, and the circular contour is provided with an opening, and the two sides of the opening are respectively provided with a straight plate, two The straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped profile, and the two straight plates communicate with the opening to form a volute air outlet, and the fan is located in the circular contour and is located at the center of the circular contour.
A clothes dryer according to claim 3 or 4, wherein the first casing of the drying fan volute has a U-shaped profile that cooperates with the second volute.
The clothes dryer according to any one of claims 1 to 5, wherein the clothes dryer is a dryer having a condensing function, further comprising a condenser and a condensing fan, and the condensing fan provides a cooling and cooling wind to the condenser.

The condensing fan comprises a volute, a fan disposed in the volute and a condensing motor for driving the fan to rotate, and the condensing motor is the same motor as the drum motor and the drying motor.

The condensing fan provides the same amount of air as the drying motor is reversing and the positive and negative conditions are provided.
A clothes dryer according to claim 6, wherein:

The volute of the condensing fan comprises a first part and a second part, and the two parts are fastened along the axial direction of the fan to form a volute The shell is provided with an air inlet opening along the axial direction of the fan on the first casing, and an air outlet is arranged on the volute in the radial direction of the fan.
A clothes dryer according to claim 7, wherein:

The second casing of the condensing fan volute includes a bottom plate and a side panel mounted on one side of the bottom plate, and the side panel comprises a circular-like contour composed of a plurality of involute profiles, and the circular contour is provided with an opening on both sides of the opening The straight plates are respectively arranged outwards, and the two straight plates are respectively tangent to the circular contours on both sides of the opening to form a U-shaped contour, and the two straight plates communicate with the opening to form a volute air outlet; the fan is located in the circular contour.
The clothes dryer according to claim 7, wherein the second casing of the condensing fan volute comprises a bottom plate and a side panel mounted on one side of the bottom plate, the side panel comprising a circular contour, wherein the circular contour is provided There is an opening, and two straight plates are outwardly arranged at the opening to be tangential to the circular contours on both sides of the opening to form a U-shaped contour, and a volute air outlet is formed between the two straight plates, and the fan is located in the circular contour and is located at the center of the circular contour .
A clothes dryer according to claim 8 or claim 9 wherein the first housing of the condensing fan volute has a U-shaped profile that cooperates with the second volute.