Washing machine

Abstract

The utility model provides a washing machine which comprises a box body, a first shaft body and a second shaft body, an outer barrel is arranged in the box body, and an inner barrel is arranged in the outer barrel. The first shaft body is rotationally mounted on the outer cylinder through a first bearing, one end of the first shaft body is connected with a power device, and the other end of the first shaft body is connected with the inner cylinder; a cooling channel is further arranged in the first shaft body, and a mounting opening is formed in one end of the cooling channel. The second shaft body is mounted at the mounting opening of the cooling channel through a second bearing, a conveying channel is arranged in the second shaft body, one end of the conveying channel is communicated with the cooling channel, and the other end of the conveying channel is communicated with a cold source so as to convey a cooling medium into the cooling channel. The washing machine can solve the technical problem that a transmission shaft of an existing washing machine is poor in heat dissipation effect.

Description

Technical Field

[0001] The present application relates to the technical field of washing machines, and in particular to a washing machine. Background Art

[0002] The existing drum washing machine mainly includes a box body, an outer drum installed in the box body, and an inner drum installed in the outer drum, wherein the inner drum is mainly connected to the motor through a transmission shaft, and the transmission shaft is installed on the outer drum of the washing machine through a bearing. When the transmission shaft rotates under the drive of the motor, it drives the inner drum to rotate relative to the outer drum, thereby realizing the washing and dehydration of the clothes.

[0003] However, during the dehydration stage, the transmission shaft rotates at a high speed, and the friction between the transmission shaft and the bearing will generate a large amount of heat, which will cause wear of the transmission shaft and the bearing, affecting the reliability of the washing machine. The existing technology mainly allows the transmission shaft and the bearing to dissipate heat naturally, but the heat dissipation effect is not improved. Utility Model Content

[0004] The embodiment of the present application provides a washing machine to solve the technical problem of poor heat dissipation effect of the transmission shaft of the existing washing machine.

[0005] To achieve the above-mentioned purpose, the washing machine proposed in the present application includes a housing, a first shaft body and a second shaft body, wherein an outer cylinder is provided in the housing, and an inner cylinder is provided in the outer cylinder. The first shaft body is rotatably mounted on the outer cylinder through a first bearing, and one end of the first shaft body is connected to a power device, and the other end is connected to the inner cylinder; a cooling channel is also provided in the first shaft body, and an installation opening is provided at one end of the cooling channel. The second shaft body is installed at the installation opening of the cooling channel through a second bearing, and a conveying channel is provided in the second shaft body, and one end of the conveying channel is connected to the cooling channel, and the other end is connected to a cold source, so as to convey cooling medium into the cooling channel.

[0006] Optionally, in one embodiment, a water inlet pipe is further provided in the box body, and one end of the conveying channel is connected to the cooling channel, and the other end is connected to the water inlet pipe.

[0007] Optionally, in one embodiment, the outer cylinder is provided with a water storage cavity, the inner cylinder is provided in the water storage cavity, and the inner cylinder is provided with a washing cavity; the cooling channel is also provided with a drain port, and the drain port is connected to the water storage cavity or the washing cavity.

[0008] Optionally, in one embodiment, a sealing ring is further provided at the installation opening, the sealing ring is sleeved outside the first shaft body, and the sealing ring abuts against the inner wall of the second shaft body.

[0009] Optionally, in one embodiment, in the axial direction of the first shaft body, the sealing ring is closer to the installation opening than the first bearing.

[0010] Optionally, in one embodiment, at least two second bearings are provided, and the at least two second bearings are spaced apart along the axial direction of the second shaft body, and the sealing ring is located between two adjacent second bearings.

[0011] Optionally, in one embodiment, the drain outlet is connected to the water storage chamber, the cooling channel includes a cooling section and a buffer section, one end of the cooling section is provided with the installation opening, and the other end is connected to the buffer section; the inner diameter of the buffer section is larger than the inner diameter of the cooling section, and the drain outlet is provided on the side wall of the buffer section.

[0012] Optionally, in one embodiment, the water inlet pipe is a spray water inlet pipe, and a spray valve is provided on the water inlet pipe, and the spray valve is used to control the water inlet pipe to switch between a water-through state and a water-off state.

[0013] Optionally, in one embodiment, the second bearing is an oil-containing bearing.

[0014] Optionally, in one embodiment, the power device includes a motor, a transmission belt and a connecting member, the connecting member is sleeved and fixed outside the first shaft, and the connecting member is connected to the motor through the transmission belt; a limiting portion is provided on the second shaft, and a limiting member is also provided on the connecting member, and the limiting member is located on the side of the limiting portion away from the first shaft to limit the second shaft from separating from the first shaft.

[0015] The first shaft body in the washing machine provided by the present application is rotatably mounted on the outer drum through the first bearing, and one end of the first shaft body is connected to the inner drum, and the other end is connected to the power device. The first shaft body can drive the inner drum to rotate relative to the outer drum under the drive of the power device to achieve washing or dehydration of clothes. In addition, a cooling channel is also provided in the first shaft body, and an installation opening is provided at one end of the cooling channel. The second shaft body is installed at the installation opening of the cooling channel through the second bearing, and a conveying channel is provided in the second shaft body, and one end of the conveying channel is connected to the cooling channel, and the other end is connected to the cold source. Then, the second shaft body can convey cooling medium to the inner cooling channel of the first shaft body without affecting the rotation of the first shaft body, so that the heat generated between the first shaft body and the first bearing can be absorbed by the cooling medium, thereby achieving heat dissipation of the first shaft body and the first bearing.

[0016] It can be understood that by providing a cooling channel in the first shaft body and introducing a cooling medium into the refrigerator cooling channel, the heat on the first shaft body and the first bearing can be better absorbed, thereby achieving a better heat dissipation effect and thereby improving the reliability of the washing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a structural cross-sectional view of an embodiment of a washing machine of the present application;

[0019] Figure 2 for Figure 1 A local structural diagram at the first axis;

[0020] Figure 3 for Figure 2 Schematic diagram of some structures in ;

[0021] Figure 4 This is a partial structural diagram of another embodiment of the washing machine of the present application.

[0022] Description of Figure Numbers:

[0023] Label name Label name Label name 100 washing machine 411 Mounting opening 80 Powerplant 10 Cabinet 412 Drain 81 Connectors 11 Mounting cavity 413 Cooling section 811 Limiting parts 20 outer cylinder 414 Buffer segment 82 Transmission belt 21 Water storage chamber 50 First bearing 90 Water inlet pipe 30 Inner tube 60 Second axis 91 Sprinkler valve 31 Washing chamber 61 Conveying channel 110 Sealing ring 40 The first axis 62 Limiting part 41 Cooling channels 70 Second bearing

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] An embodiment of the present application provides a washing machine to solve the problem of poor heat dissipation of the transmission shaft of the washing machine, which will be described below with reference to the accompanying drawings.

[0027] In the embodiments of the present application, Figures 1 to 3 As shown, the washing machine 100 includes a housing 10 , a first shaft 40 and a second shaft 60 .

[0028] Among them, Figure 1As shown, an outer drum 20 is provided in the housing 10, and an inner drum 30 is provided in the outer drum 20. Specifically, the housing 10 is approximately in the shape of a rectangular box, and is usually made of metal materials, such as steel plates, aluminum alloys, etc. The housing 10 is the supporting structure of the entire washing machine 100, and is used to carry other components on the washing machine 100, such as a drum, a motor, a water pump, etc. Specifically, an installation cavity 11 is provided in the housing 10, and other components on the washing machine 100, such as a drum, a motor, a water pump, etc., are installed in the installation cavity 11, which can protect and support other components, and ensure the stability and safety of the washing machine 100 during operation.

[0029] Of course, the box body 10 is also provided with a door body, a knob switch, a heat dissipation vent, etc. The specific structure of the box body 10 can be designed according to relevant existing technologies and is not specifically limited here.

[0030] The outer drum 20 is fixedly installed in the housing 10, and the outer drum 20 is provided with a water storage chamber 21. The washing machine 100 generally further includes a water inlet pipe and a drain pipe. One end of the water inlet pipe is connected to a water source (such as a faucet), and the other end is connected to the outer drum 20 and communicates with the water storage chamber 21; one end of the drain pipe is connected to the outer drum 20 and communicates with the water storage chamber 21, and the other end extends to the outside of the housing 10 and communicates with the floor drain. When water needs to be inlet and washed, the water inlet pipe introduces water into the water storage chamber 21 of the outer drum 20; and when washing is completed or during dehydration, the drain pipe discharges the water in the water storage chamber 21.

[0031] The inner drum 30 is arranged in the water storage chamber 21 of the outer drum 20, and the inner drum 30 is provided with a washing chamber 31, the washing chamber 31 is used to place clothes, and the side wall of the inner drum 30 is generally provided with a plurality of water holes, so that the water in the water storage chamber 21 can enter the washing chamber 31, or the water in the washing chamber 31 can flow out to the water storage chamber 21. In addition, the outer wall of the inner drum 30 is spaced from the inner wall of the outer drum 20, and the inner drum 30 is connected to the power device 80 through the first shaft body 40, and then the first shaft body 40 can drive the inner drum 30 to rotate under the drive of the power device 80 to achieve washing and dehydration of clothes.

[0032] For details, please refer to Figure 2 The first shaft body 40 is rotatably mounted on the outer cylinder 20 through the first bearing 50, and one end of the first shaft body 40 is connected to the power device 80, and the other end is connected to the inner cylinder 30. Among them, the first shaft body 40 is a rotating shaft that plays a transmission role, and the first bearing 50 is mainly a roller bearing, whose outer ring is fixed on the outer cylinder 20, and the inner ring is fixedly sleeved on the outer periphery of the first shaft body 40. In addition, in order to improve the installation stability of the first shaft body 40, a plurality of first bearings 50 are provided, and the plurality of first bearings 50 are arranged at intervals along the axial direction of the first shaft body 40.

[0033] The power device 80 mainly includes a motor (not shown), a transmission belt 82 and a connector 81. The connector 81 is sleeved and fixed on the outside of the first shaft 40. The transmission belt 82 is sleeved on the outside of the connector 81 and the output shaft of the motor. When the output shaft of the motor rotates, the transmission belt 82 and the connector 81 can rotate, and the connector 81 drives the first shaft 40 to rotate relative to the outer drum 20. Because the inner drum 30 is connected to the first shaft 40, the inner drum 30 can rotate with the first shaft 40 to achieve washing and dehydration of clothes.

[0034] It can be understood that during the rotation of the first shaft 40, especially in the dehydration stage, the rotation speed of the first shaft 40 is relatively high, and a large amount of heat will be generated between the first shaft 40 and the first bearing 50 due to friction, which will cause wear of the first shaft 40 and the first bearing 50, affecting the reliability of the washing machine 100.

[0035] In this regard, in this application, Figure 2 , Figure 3 or Figure 4 As shown, a cooling channel 41 is also provided in the first shaft body 40, and the cooling channel 41 is coaxially arranged with the first shaft body 40. Of course, if the process conditions permit, the cooling channel 41 can also be bent and extended. An installation opening 411 is provided at one end of the cooling channel 41, and the installation opening 411 is located on the end surface of the first shaft body 40 away from the inner cylinder 30. The second shaft body 60 is installed at the installation opening 411 of the cooling channel 41 through the second bearing 70, that is, the second shaft body 60 at least partially extends into the cooling channel 41 of the first shaft body 40, and the second shaft body 60 is connected to the first shaft body 40 through the second bearing 70, so that the first shaft body 40 and the second shaft body 60 can rotate relative to each other.

[0036] In addition, a delivery channel 61 is provided in the second shaft body 60, one end of the delivery channel 61 is connected to the cooling channel 41, and the other end is connected to the cold source, so as to deliver the cooling medium into the cooling channel 41. Specifically, the delivery channel 61 is coaxially arranged with the second shaft body 60, and the second channel penetrates the second shaft body 60 along the axial direction of the second shaft body 60, and because the second shaft body 60 at least partially extends into the cooling channel 41 of the first shaft body 40, one end of the delivery channel 61 is connected to the cooling channel 41. The other end of the delivery channel 61 is connected to the cold source, which can be a faucet, a water pipe, a cold oil tank, a cold air tank, etc., and then the delivery channel 61 can deliver the cooling medium such as cold water, cold oil, cold air, etc. in the cold source to the cooling channel 41.

[0037] It should be noted here that a drain port 412 or an exhaust port can be set on the cooling channel 41 so that the cooling medium can take the heat out of the first shaft 40 in time after absorbing the heat; alternatively, when the cooling medium is cold air, the cooling medium can also be set to flow out from the installation opening 411, so that the heat can be taken away in time.

[0038] It can be understood that the second shaft body 60 is installed in the cooling channel 41 of the first shaft body 40 through the second bearing 70, and a conveying channel 61 connected to the cooling channel 41 is provided in the second shaft body 60, so that the second shaft body 60 can convey cooling medium to the inner cooling channel 41 of the first shaft body 40 without affecting the rotation of the first shaft body 40, thereby allowing the heat generated between the first shaft body 40 and the first bearing 50 to be better absorbed by the cooling medium, thereby achieving a better heat dissipation effect.

[0039] Optionally, in one embodiment, as Figures 1 to 4 As shown in any of the figures in the drawings, a water inlet pipe 90 is further provided in the box body 10, one end of the delivery channel 61 is connected to the cooling channel 41, and the other end is connected to the water inlet pipe 90. That is, in this embodiment, the water inlet pipe 90 is a cold source that can provide a cooling medium, and the cooling medium is cold water, which has a large heat capacity and a low acquisition cost, thereby achieving a better heat dissipation effect at a lower cost.

[0040] For further information, please refer to Figure 2 The outer drum 20 is provided with a water storage chamber 21, the inner drum 30 is provided in the water storage chamber 21, and the inner drum 30 is provided with a washing chamber 31; the cooling channel 41 is also provided with a drain port 412, the drain port 412 is located at one end of the cooling channel 41 close to the inner drum 30, and the drain port 412 is connected to the water storage chamber 21 or the washing chamber 31. Therefore, after absorbing heat, the cold water can take the heat out of the first shaft body 40 through the drain port 412, and the cold water flows out from the drain port 412 and flows into the water storage chamber 21 of the outer drum 20 or the washing chamber 31 of the inner drum 30, so it will not affect other devices in the washing machine 100.

[0041] Further, such as Figure 3 or Figure 4 As shown, a sealing ring 110 is also provided at the installation opening 411. The sealing ring 110 may be a rubber ring, an oil seal, etc. The sealing ring 110 is sleeved outside the first shaft body 40, and the sealing ring 110 abuts against the inner wall of the second shaft body 60. This can prevent cold water from flowing out of the installation opening 411 and prevent cold water from dripping onto live components such as the motor, thereby improving the safety of the washing machine 100.

[0042] Of course, in other embodiments, waterproof gaskets may be provided between the outer ring of the second bearing 70 and the inner wall of the first shaft body 40, and between the inner ring of the second bearing 70 and the outer wall of the second shaft body 60, and a water-retaining membrane may be covered on the end face of the second bearing 70 to prevent cold water from leaking from the installation opening 411 of the cooling channel 41.

[0043] Further, such as Figure 3 or Figure 4 As shown, in the axial direction of the first shaft body 40, the sealing ring 110 is closer to the installation opening 411 than any first bearing 50, so that cold water can flow to the position corresponding to the first bearing 50, thereby better absorbing the heat generated by the first bearing 50 and improving the heat dissipation effect.

[0044] Optionally, in one embodiment, as Figure 3 or Figure 4 As shown, in order to improve the installation stability of the second shaft body 60, at least two second bearings 70 are provided. The at least two second bearings 70 are spaced apart along the axial direction of the second shaft body 60, and the sealing ring 110 is located between two adjacent second bearings 70. This can reduce the pressure exerted by cold water on the sealing ring 110, so that the sealing ring 110 can more stably prevent cold water from flowing out of the installation opening 411.

[0045] Optionally, in one embodiment, please combine Figure 2 and Figure 3 , the drain port 412 is communicated with the water storage chamber 21, the cooling channel 41 includes a cooling section 413 and a buffer section 414, one end of the cooling section 413 is provided with a mounting opening 411, and the other end is communicated with the buffer section 414; the inner diameter of the buffer section 414 is larger than the inner diameter of the cooling section 413, and the drain port 412 is arranged on the side wall of the buffer section 414. It can be understood that because the inner diameter of the buffer section 414 is larger than the inner diameter of the cooling section 413, when the cold water flows from the cooling section 413 to the buffer section 414, the pressure of the cold water will be attenuated, so as to avoid the problem that the cold water flows out of the drain port 412 too fast and then hits the inner cylinder 30 to generate noise.

[0046] Optionally, in one embodiment, as Figure 1As shown, the water inlet pipe 90 is a spray water inlet pipe, and the water inlet pipe 90 is provided with a spray valve 91, and the spray valve 91 is used to control the water inlet pipe 90 to switch between the water-through state and the water-off state. When the water inlet pipe 90 is switched to the water-through state, the water inlet pipe 90 can pass cold water into the cooling channel 41, and when the water inlet pipe 90 is switched to the water-off state, the water inlet pipe 90 does not pass cold water into the cooling channel 41. It can be understood that the first shaft body 40 and the first bearing 50 generally generate a large amount of heat during the dehydration stage. If too much cold water is used for cooling, it is not conducive to the dehydration of the clothes. Therefore, by connecting the second shaft body 60 to the spray water inlet pipe 90 with less water consumption, the first shaft body 40 and the first bearing 50 can be efficiently cooled, and too much water can be prevented from entering the outer drum 20 or the inner drum 30.

[0047] In addition, by providing the spray valve 91, the amount of water introduced can be controlled, and the water inlet pipe 90 can be switched to a water-off state when heat dissipation is not required, which makes control very convenient.

[0048] Optionally, in one embodiment, the second bearing 70 is an oil-containing bearing. The performance of the oil-containing bearing itself allows it to be made into a smaller size. This allows the first shaft body 40 to accommodate the second shaft body 60 and the second bearing 70 in a smaller size, thereby avoiding the situation where the first shaft body 40 and the cooling channel 41 need to be made larger, thereby occupying a larger installation space and increasing the cost.

[0049] Optionally, in one embodiment, as Figure 1 As shown, the power device 80 includes a motor (not shown), a transmission belt 82 and a connecting member 81. The connecting member 81 is sleeved and fixed outside the first shaft 40, and the connecting member 81 is connected to the motor through the transmission belt 82. Figure 4 As shown, the second shaft body 60 is provided with a stopper 62, which can be a boss protruding outside the second shaft body 60, and the stopper 62 can extend along the circumferential direction of the second shaft body 60. The connector 81 is also provided with a stopper 811, which can be an annular clamp, and the stopper 811 is detachably mounted on the connector 81, and the stopper 811 is at least partially located on a side of the stopper 62 away from the first shaft body 40, so that the second shaft body 60 can be limited from being separated from the first shaft body 40, and the second shaft body 60 can be prevented from being separated from the cooling channel 41 during use, thereby improving the reliability of the washing machine 100.

[0050] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. In the description of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0051] The washing machine provided in the embodiment of the present application is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A washing machine, characterized in that: include: A box body, wherein an outer cylinder is arranged inside the box body, and an inner cylinder is arranged inside the outer cylinder; a first shaft body, wherein the first shaft body is rotatably mounted on the outer cylinder through a first bearing, and one end of the first shaft body is connected to the power device, and the other end is connected to the inner cylinder; a cooling channel is also provided in the first shaft body, and one end of the cooling channel is provided with a mounting opening; and A second shaft body, wherein the second shaft body is installed at the installation opening of the cooling channel through a second bearing, and a conveying channel is provided in the second shaft body, one end of the conveying channel is connected to the cooling channel, and the other end is connected to a cold source to convey cooling medium into the cooling channel.

2. The washing machine according to claim 1, characterized in that: A water inlet pipe is also provided in the box body, one end of the conveying channel is communicated with the cooling channel, and the other end is communicated with the water inlet pipe.

3. The washing machine according to claim 2, characterized in that: The outer cylinder is provided with a water storage cavity, the inner cylinder is arranged in the water storage cavity, and the inner cylinder is provided with a washing cavity; the cooling channel is also provided with a drain port, and the drain port is communicated with the water storage cavity or the washing cavity.

4. The washing machine according to claim 3, characterized in that: A sealing ring is also provided at the installation opening. The sealing ring is sleeved outside the first shaft body and abuts against the inner wall of the second shaft body.

5. The washing machine according to claim 4, characterized in that: In the axial direction of the first shaft body, the sealing ring is closer to the installation opening than the first bearing.

6. The washing machine according to claim 4, characterized in that: There are at least two second bearings, and the at least two second bearings are spaced apart along the axial direction of the second shaft body. The sealing ring is located between two adjacent second bearings.

7. The washing machine according to claim 3, characterized in that: The drain port is communicated with the water storage chamber, the cooling channel includes a cooling section and a buffer section, one end of the cooling section is provided with the installation opening, and the other end is communicated with the buffer section; the inner diameter of the buffer section is larger than the inner diameter of the cooling section, and the drain port is provided on the side wall of the buffer section.

8. The washing machine according to claim 2, characterized in that: The water inlet pipe is a spray water inlet pipe, and a spray valve is provided on the water inlet pipe. The spray valve is used to control the water inlet pipe to switch between a water-through state and a water-off state.

9. The washing machine according to any one of claims 1 to 8, characterized in that: The second bearing is an oil-containing bearing.

10. The washing machine according to any one of claims 1 to 8, characterized in that: The power device comprises a motor, a transmission belt and a connecting piece, wherein the connecting piece is sleeved and fixed outside the first shaft, and the connecting piece is connected to the motor through the transmission belt; A limiting portion is provided on the second shaft body, and a limiting member is also provided on the connecting member. The limiting member is located on a side of the limiting portion away from the first shaft body to limit the second shaft body from being separated from the first shaft body.

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