WO2018171526A1

WO2018171526A1 - Sealing apparatus for drum of tumble dryer

Info

Publication number: WO2018171526A1
Application number: PCT/CN2018/079314
Authority: WO
Inventors: 成荣锋; 杨坤; 李怡锦
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2017-03-24
Filing date: 2018-03-16
Publication date: 2018-09-27
Also published as: CN108625132B; CN108625132A

Abstract

A sealing apparatus for a drum of a tumble dryer. The tumble dryer comprises the drum (1). An extremity of the drum (1) is connected to a supporting element (2). The sealing apparatus comprises a sealing ring (3) engagedly connected to the supporting element (2). An extremity of the drum (1) is hermetically connected to the sealing ring (3), so that the drum (1) is hermetically connected in both the axial direction and the radial direction via the sealing ring (3) to the supporting element (2). By means of an axial sealing part and a radial sealing part of the sealing apparatus, implemented is the hermetic connection between the extremities of the drum (1) and the supporting element (2) in the axial direction and the radial direction, sealing effects are increased for the extremities of the drum (1), thus reducing heat loss from circulating hot air in a tumble dry process, implementing effective utilization of the heat of the circulating hot air, reducing drying time, reducing the energy consumption for drying, and increasing drying effects.

Description

Dryer drum sealing device

Technical field

The present invention relates to the field of clothes dryers, and more particularly to a dryer drum sealing device.

Background technique

The method of raising the temperature, lowering the temperature, increasing the airflow speed, and expanding the evaporation area by the dryer is that the clothes are quickly dried, the circulating steam is used, the water vapor evaporated from the clothes, and then condensed into water through the condenser, and then from the machine. discharge. This requires a seal between the dryer air duct system and the drum to minimize the loss of heat from the circulating hot air.

In the prior art, the sealing structure of the end of the dryer drum is usually a radial seal, but the gravity of the drum itself causes a radial assembly error, so that the end of the drum is not uniformly sealed, and with the working time of the dryer The extension of the radial sealing structure wears and the end seal of the drum becomes more and more uneven, which leads to heat loss and low drying efficiency. The axial seal is also used, but the sealing effect is not good.

In view of this, the present invention has been specifically proposed.

Summary of the invention

It is an object of the present invention to provide a dryer drum sealing device for improving the sealing effect of the end portion of the drum.

To achieve this, the present invention adopts the following technical solutions:

A dryer drum sealing device, the dryer comprising a drum, the end of the drum being connected with the support member, the sealing device comprising a sealing ring connected to the support member, the end of the drum being sealed with the sealing ring The drum is sealedly connected to the support member in the axial direction and the radial direction via the seal ring.

Further, the seal ring includes an axial seal portion axially sealingly coupled to the support member and a first radial seal portion radially connected to the support member, the axial seal portion being coupled to the first radial seal portion to form a concave portion The groove, the end of the drum is axially pressed into the interior of the groove and sealed.

Further, the axial seal portion and the first radial seal portion are a single piece, and one end of the axial seal portion in sealing contact with the support member is bent toward the inside of the drum to form a first radial seal portion.

Further, the outer circumference of the support member is a limiting portion, and the limiting portion is a vertical plate provided in a circle, the limiting portion is perpendicular to the axial direction of the drum, and the limiting portion is in sealing contact with the axial sealing portion of the sealing ring. The support member on the inner side of the limiting portion is provided with a radial sealing surface protruding toward the inner direction of the drum, and the first radial sealing portion of the sealing ring is sleeved to the outside of the radial sealing surface, so that the first radial sealing portion and the diameter Sealed to the sealing surface.

Further, the radial sealing surface is formed by a pressing type of the support member that protrudes toward the inside of the drum.

Further, the first end of the first radial sealing portion is connected to the axial sealing portion, and the second end is in sealing contact with the radial sealing surface; the first radial sealing portion is gradually inclined from the first end to the second end The inclined surface inclined toward the middle of the drum causes the first radial seal portion to be sealed corresponding to the radial seal surface.

Further, the second end of the first radial sealing portion is bent toward the inside of the groove to form a first bent portion, and the end portion of the roller is axially pressed into the inside of the groove, and the inner wall surface of the end portion of the drum is first folded The end of the bend is in sealing contact;

Preferably, the end of the drum is axially pressed into the interior of the groove and is in sealing contact with the axial seal.

Further, the seal ring further includes a second radial seal portion extending horizontally from the axial seal portion toward the inside of the drum, the drum end portion is axially pressed to the inside of the groove, and the outer wall surface of the drum end portion and the second radial direction The sealing portion is in sealing contact;

Preferably, preferably, the end of the drum is inserted into the interior of the second radial seal, and the outer wall of the end of the drum is in interference fit with the inner wall of the second radial seal, so that the end of the drum and the second diameter The sealing portion is in sealing contact and fixed.

Further, the outer portion of the end portion of the second radial sealing portion is provided with an elastic ring having elastic contraction property, so that the second radial sealing portion is clamped and fixed between the end portion of the roller and the elastic ring to realize the roller. a fixed connection of the end portion to the second radial sealing portion;

Preferably, an adhesive layer is disposed between the roller end portion and the second radial sealing portion to achieve adhesion and fixation between the roller end portion and the second radial sealing portion.

Further, the front and/or rear ends of the drum are respectively sealed and connected to the corresponding front and rear support members via a seal ring.

Compared with the prior art, the present invention has the following beneficial effects:

The invention realizes the sealing connection between the end portion of the drum and the support member in the axial direction and the radial direction by the axial seal portion and the radial seal portion of the sealing device, thereby improving the sealing effect of the end portion of the drum, thereby reducing the drying process. The loss of heat in the circulating hot airflow realizes the effective utilization of the heat of the circulating hot airflow, shortens the drying time, reduces the drying energy consumption, and improves the drying effect.

DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are not intended to be construed as limiting 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:

1 is a schematic structural view of a sealing device according to an embodiment of the present invention;

Figure 2 is a schematic view showing the enlarged structure of A in Figure 1 of the present invention;

3 is a schematic structural view of a sealing device according to another embodiment of the present invention;

Figure 4 is a schematic view showing the enlarged structure of B in Figure 3 of the present invention;

The names of the components are as follows:

1 - roller, 2 - support, 3 - seal ring, 4 - groove, 5 - limit, 6 - elastic ring, 7 - second radial seal, 8 - shaft To the sealing portion, 9 - first radial seal, 10 - first bend, 11 - joint, 12 - radial sealing surface, 13 - adhesive layer.

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 present invention is described in the following detailed description of the embodiments of the present invention, and is not intended to limit the scope of the present invention.

As shown in Figures 1-4, an embodiment of the present invention introduces a dryer drum sealing device, the dryer comprising a drum 1, the end of the drum 1 being coupled to the support member 2, the sealing device comprising and supporting The sealing ring 3 of the piece 2 is fastened to the sealing ring 3, and the end of the drum 1 is sealingly connected with the sealing ring 3, so that the drum 1 is sealingly connected to the supporting member 2 via the sealing ring 3 in the axial direction and the radial direction.

The above-mentioned sealing device realizes the sealing of the end portion of the drum 1 in the axial direction and the radial direction, thereby improving the sealing effect of the end portion of the drum 1, thereby shortening the drying time, reducing the drying energy consumption and improving the drying effect. And through the above arrangement, the worker only needs to press the end of the drum 1 into the inner side of the seal ring 3 to complete the sealing of the end of the drum 1, and the above operation is simple and quick.

Specifically, the seal ring 3 includes an axial seal portion 8 axially sealingly coupled to the support member 2 and a first radial seal portion 9 radially sealingly connected to the support member 2, the axial seal portion 8 and the first diameter The groove 4 is connected to the sealing portion 9, and the end of the drum 1 is axially pressed to the inside of the groove 4 and sealedly connected.

The axial seal portion 8 and the first radial seal portion 9 are a single piece, and one end of the axial seal portion 8 in sealing contact with the support member 2 is bent toward the inside of the drum 1 to form a first radial seal portion 9.

The front and/or rear ends of the drum are respectively sealedly connected to the corresponding front and rear support members via a seal ring 3.

Embodiment 1

As shown in FIG. 1-4, in the embodiment, the outer periphery of the support member 2 is a limiting portion 5, and the limiting portion 5 is a vertical plate provided in a circle, and the limiting portion 5 is axially opposite to the roller 1. Vertically, the limiting portion 5 is in sealing contact with the axial sealing portion 8 of the sealing ring 3; the support member 2 on the inner side of the limiting portion 5 is provided with a radial sealing surface 12 protruding toward the inside of the drum 1, the sealing ring 3 The first radial seal 9 is sleeved to the outside of the radial sealing surface 12 such that the first radial seal 9 is sealingly connected to the radial sealing surface 12.

The above arrangement improves the sealing effect between the seal ring 3 and the support member 2, thereby improving the functions of the dryer.

The radial sealing surface 12 is formed by a pressing shape of the support member 2 that protrudes toward the inside of the drum 1.

The radial sealing surface 12 provided above is not easily deformed, and the supporting effect on the sealing ring 3 is better.

Embodiment 2

As shown in FIG. 1-4, in the embodiment, the first end of the first radial sealing portion 9 is connected to the axial sealing portion 8, and the second end is in sealing contact with the radial sealing surface 12; A radial seal portion 9 is a slope that gradually inclines from the first end toward the second end toward the central portion of the drum 1, so that the first radial seal portion 9 is engaged with the radial seal surface 12.

The above arrangement makes the seal ring 3 have elastic contraction property, which facilitates the snap-fit connection with the support member 2, and at the same time, when the drum 1 is subjected to its own gravity, the first radial seal portion 9 of the seal ring 3 is elastically contracted all the time with the support member. The radial sealing faces 12 of the two are hermetically connected to each other, thereby improving the sealing effect between the sealing ring 3 and the support 2.

The second end of the first radial sealing portion 9 is bent inside the groove 4 to form a first bent portion 10, and the end portion of the drum 1 is axially pressed into the inside of the groove 4, and the inner wall surface of the end portion of the drum 1 It is in sealing contact with the end of the first bent portion 10.

The above arrangement improves the sealing effect between the end of the drum 1 and the seal ring 3, thereby improving the functions of the dryer, and at the same time strengthening the support of the seal ring 3 to the drum 1, reducing the gravity of the drum 1 to the drum 1 The effect of the end seal effect.

Preferably, the end of the drum 1 is axially pressed into the interior of the recess 4 and is in sealing contact with the axial seal 8.

The above arrangement improves the sealing effect between the end of the drum 1 and the seal ring 3, thereby improving the functions of the dryer.

The end of the first bent portion 10 is a tapered surface that gradually contracts toward the inside of the seal ring 3.

The above arrangement reduces the frictional resistance of the first bent portion 10 to the end portion of the drum 1 on the basis of achieving the sealing connection between the end portion of the drum 1 and the seal ring 3, facilitating the insertion or withdrawal of the end portion of the drum 1 from the inside of the seal ring 3.

Embodiment 3

As shown in FIG. 1-4, in the present embodiment, the seal ring 3 further includes a second radial seal portion 7 extending horizontally from the axial seal portion 8 toward the inside of the drum 1, and the end of the drum 1 is axially extruded. Pressed into the interior of the recess 4, the outer wall surface of the end of the drum 1 is in sealing contact with the second radial seal portion 7.

The end of the second radial sealing portion 7 is bent to the outside of the sealing ring 3 to form a second bent portion;

Preferably, the end of the second bent portion is in sealing contact with the limiting portion 5 of the support member 2.

As such, the above arrangement improves the sealing effect between the seal ring 3 and the support member 2, thereby improving the functions of the dryer.

The second radial seal portion 7 of the seal ring 3 and the outer surface of the axial seal portion 8 are horizontally disposed in the axial direction.

Embodiment 4

As shown in FIG. 1-4, in the present embodiment, the end portion of the drum 1 is bent outward to form a connecting portion 11, and the end portion of the drum 1 is axially pressed to the inside of the sealing ring 3, and is located outside the connecting portion 11. The end of the drum 1 is sealingly connected to the second radial seal 7 under radial pressure.

The connecting portion 11 provided above and the end portion of the drum 1 constitute a U-shaped structure having elastic properties, and therefore, when the drum 1 is subjected to its own gravity, the connecting portion 11 is always elastically contracted with the second radial sealing portion 7 of the seal ring 3 The sealing connection improves the sealing effect between the end of the drum 1 and the sealing ring 3.

The seal ring 3 in the above embodiment may be a sheet metal material, a rubber material, or a felt.

The second radial seal portion 7, the axial seal portion 8, and the first radial seal portion 9 of the seal ring 3 are formed by a one-piece bending.

Embodiment 5

In the present invention, the seal ring 3 may be made of rubber or felt or the like.

The limiting portion 5 is provided with a sealing portion extending in the inner direction of the drum 1 and disposed outside the radial sealing surface 12, and the sealing portion and the radial sealing surface 12 are respectively provided with oppositely extending first clamping members. And the second clamping member, the axial sealing portion 8 is clamped and fixed between the first clamping member and the second clamping member, so that the sealing ring 3 and the supporting member 2 are fixedly connected.

The end faces of the first clamping member and the second clamping member are horizontally disposed in the axial direction.

Since the inclined radial sealing surface 12 causes the sealing ring 3 to slide under the action of its own gravity or the gravity of the drum 1, the sealing effect between the sealing ring 3 and the support 2 is reduced, and the present invention is improved by the above arrangement. The sealing effect between the seal ring 3 and the support member 2 is reduced while the weight of the seal ring 3 is reduced, thereby further improving the sealing effect between the seal ring 3 and the support member 2.

The first clamping member is sealingly connected to the second radial sealing portion 7, and the first clamping member and the vertical projection portion of the end portion of the roller 1 are coincident.

With the above arrangement, when the drum 1 vibrates, the second radial seal portion 7 is always clamped between the end portion of the drum 1 and the first clamp member, improving the sealing effect of the end portion of the drum 1.

The second radial seal portion 7 is bent outward to form a second bent portion, and the second bent portion seals the joint of the first clamp member and the second radial seal portion 7.

The above arrangement improves the sealing effect between the second radial sealing portion 7 and the first clamping member, and even if the sealing ring 3 of the present invention has a radial sealing unevenness after a long period of use, the second bending portion can still achieve the second A seal between the clamping member and the second radial seal portion 7.

Embodiment 6

As shown in FIG. 1-4, in the present embodiment, the seal ring 3 includes a first radial seal portion 9, an axial seal portion 8, and a second radial seal portion 7, and the end portion of the drum 1 is axially extruded. The inside of the recess 4 is fixedly connected to the second radial seal 7 to achieve a fixed connection of the end of the drum 1 to the seal ring 3.

Through the above arrangement, the technician first fixedly connects the end of the drum 1 with the seal ring 3, and then fixedly connects the two to the support member 2.

In this embodiment, the end of the drum 1 is inserted into the inside of the second radial sealing portion 7, and the outer wall of the end portion of the drum 1 is in interference fit with the inner wall of the second radial sealing portion 7, so that the end of the drum 1 It is in sealing contact with the second radial seal portion 7 and is fixed.

With the above arrangement, the fixed connection of the end of the drum 1 to the seal ring 3 can be realized without an auxiliary connecting member, which is the easiest and quickest.

As shown in FIG. 1 and FIG. 2, the outer portion of the second radial sealing portion 7 is sleeved with an elastic ring 6 having elastic contraction properties, so that the second radial sealing portion 7 is clamped and fixed to the end portion of the roller 1 and the elastic ring. Between 6 to achieve a fixed connection of the end of the drum 1 to the second radial seal 7 . The elastic ring 6 can also be sleeved outside the second bend.

The above arrangement facilitates the separation of the end of the drum 1 from the second radial seal portion 7 on the basis of ensuring the reliability of the connection of the end portion of the drum 1 with the second radial seal portion 7, thereby facilitating the end portion of the drum 1. Separation from the seal ring 3.

As shown in FIGS. 3 and 4, an adhesive layer 13 is provided between the end of the drum 1 and the second radial seal portion 7 to achieve adhesion and fixation of the end portion of the drum 1 and the second radial seal portion 7.

The above arrangement reinforces the reliability of the connection of the end of the drum 1 to the second radial seal portion 7.

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, any technology that is familiar with the present invention. 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 dryer drum sealing device, the dryer comprising a drum (1), the end of the drum (1) being connected to the support member (2), characterized in that the sealing device comprises a support member (2) The sealing ring (3) is fastened and connected, and the end of the drum (1) is sealingly connected with the sealing ring (3), so that the drum (1) passes through the sealing ring (3) and the supporting member (2) in both the axial direction and the radial direction. Sealed connection.
A dryer drum sealing device according to claim 1, wherein said seal ring (3) comprises an axial seal (8) and a support member axially sealingly connected to the support member (2) (2) a first radial seal portion (9) connected in a radial seal, the axial seal portion (8) being connected to the first radial seal portion (9) to form a groove (4), the end portion of the drum (1) Axial extrusion into the interior of the groove (4) and sealing connection.
A dryer drum sealing device according to claim 2, wherein the axial seal portion (8) and the first radial seal portion (9) are a single piece, and the axial seal portion (8) One end in sealing contact with the support member (2) is bent inside the drum (1) to form a first radial seal portion (9).
The dryer cylinder sealing device according to claim 2, wherein the outer periphery of the support member (2) is a limiting portion (5), and the limiting portion (5) is vertically arranged in a circle. The plate, the limiting portion (5) is perpendicular to the axial direction of the drum (1), and the limiting portion (5) is in sealing contact with the axial sealing portion (8) of the sealing ring (3); the inner side of the limiting portion (5) The support member (2) is provided with a radial sealing surface (12) protruding toward the inside of the drum (1), and the first radial sealing portion (9) of the sealing ring (3) is sleeved to the radial sealing surface ( 12) Externally, the first radial seal portion (9) is sealingly connected to the radial sealing surface (12).
A dryer drum sealing device according to claim 4, wherein said radial sealing surface (12) is formed by a pressing shape of the support member (2) projecting toward the inside of the drum (1).
A dryer cylinder sealing device according to claim 4, wherein the first end of the first radial sealing portion (9) is connected to the axial sealing portion (8), and the second end is The radial sealing surface (12) is in sealing contact; the first radial sealing portion (9) is a slope which gradually inclines from the first end toward the second end toward the middle of the drum (1), so that the first radial sealing portion ( 9) Sealed corresponding to the radial sealing surface (12).
A dryer drum sealing device according to claim 6, wherein the second end of the first radial seal portion (9) is bent inside the groove (4) to form a first bend a portion (10), the end portion of the drum (1) is axially pressed into the inside of the groove (4), and the inner wall surface of the end portion of the drum (1) is in sealing contact with the end portion of the first bent portion (10);

Preferably, the end of the drum (1) is axially pressed into the interior of the recess (4) and is in sealing contact with the axial seal (8).
A dryer drum sealing device according to any one of claims 2-7, wherein the seal ring (3) further comprises a horizontal extension from the axial seal portion (8) toward the inside of the drum (1). a second radial seal (7), the end of the drum (1) is axially pressed into the interior of the groove (4), and the outer wall surface of the end of the drum (1) is sealed with the second radial seal (7) contact;

Preferably, the end of the drum (1) is inserted into the interior of the second radial seal (7), and the outer wall of the end of the drum (1) is in interference with the inner wall of the second radial seal (7). The end of the drum (1) is in sealing contact with the second radial seal portion (7) and fixed.
A dryer cylinder sealing device according to claim 8, wherein the outer portion of the second radial sealing portion (7) is provided with an elastic ring (6) having elastic contraction properties, so that the second The radial sealing portion (7) is clamped and fixed between the end of the drum (1) and the elastic ring (6) to achieve a fixed connection between the end of the drum (1) and the second radial sealing portion (7);

Preferably, an adhesive layer (13) is disposed between the end of the drum (1) and the second radial seal portion (7) to realize the end portion of the drum (1) and the second radial seal portion (7) The bonding is fixed.
A dryer drum sealing device according to any one of claims 1-9, characterized in that the front and/or rear end portions of the drum are respectively passed through a sealing ring (3) and corresponding front and rear support members. Phase sealed connection.