Laundry treating apparatus

Abstract

The utility model provides clothes processing equipment which comprises a box body forming a shell outside the clothes processing equipment; the outer cylinder is arranged in the box body; the bearing seat is arranged on the rear wall of the outer cylinder and provided with a mounting through hole, and the mounting through hole penetrates through the front end and the rear end of the bearing seat; the rotating shaft is rotatably arranged on the outer cylinder, and the rotating shaft is arranged in the mounting through hole in a penetrating manner; the first bearing is arranged in the mounting through hole, and the first bearing is arranged on the rotating shaft in a sleeving manner; the second bearing is mounted in the mounting through hole, the second bearing sleeves the rotating shaft, and the second bearing sleeves are arranged on the rear side of the first bearing at intervals; the heating piece is arranged on the bearing seat; the inner wall of the mounting through hole, the outer surface of the rotating shaft, the first bearing and the second bearing are sealed to form a gas space; a vent hole is formed in the bearing seat, one end of the vent hole is communicated with the gas space, and the other end of the vent hole is communicated with the outside; the heating piece is configured to heat the bearing seat so that heat can be transmitted into the gas space through the bearing seat.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, and mainly relates to a clothes treatment equipment. BACKGROUND

[0002] The washing machine is a cleaning type electric appliance for washing clothes by using electric energy. With the acceleration of life rhythm and the high requirement of people on life comfort, the washing machine has become an essential household appliance in people's daily life.

[0003] At present, the main use in the market is the pulsator washing machine and the drum type washing machine. Among them, the bearing seat in the drum type washing machine is an important force receiving part of the washing machine, and the bearing is installed in it to realize the high-speed rotation of the inner drum.

[0004] In the prior art, the front bearing of the bearing seat is sealed and isolated from water vapor by an oil seal. However, due to the structural design problem of the bearing seat, when the steam enters the bearing seat, it is difficult to discharge, and the water vapor is easily accumulated in the bearing seat for a long time, which can cause the bearing to rust and damage, and generate noise. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a clothes treatment equipment to solve the problem that the water vapor in the bearing seat of the prior art is easily accumulated and affects the working of the bearing.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] One aspect of the present application discloses a clothes treatment equipment, which comprises a box body forming an outer shell of the clothes treatment equipment, an outer drum arranged in the box body, a bearing seat arranged at a rear wall of the outer drum, the bearing seat being provided with a mounting through hole penetrating through front and rear ends of the bearing seat, a rotating shaft rotatably arranged on the outer drum, the rotating shaft being arranged in the mounting through hole, a first bearing arranged in the mounting through hole, the first bearing being sleeved on the rotating shaft, a second bearing arranged in the mounting through hole, the second bearing being sleeved on the rotating shaft, and the second bearing being arranged at a rear side of the first bearing in a spaced manner, and a heating piece arranged on the bearing seat, wherein an air space is formed between an inner wall of the mounting through hole, an outer surface of the rotating shaft, the first bearing and the second bearing; the bearing seat is provided with a ventilation hole, one end of the ventilation hole is communicated with the air space, and the other end of the ventilation hole is communicated with the outside; and the heating piece is configured to heat the bearing seat, so that heat is transmitted to the air space through the bearing seat.

[0008] The technical scheme has the following advantages or beneficial effects: in the present application, the ventilation hole is arranged on the bearing seat, one end of the ventilation hole is communicated with the first bearing and the second bearing, and the other end of the ventilation hole is communicated with the outside, thereby providing a channel for the water vapor accumulated in the gas space to be discharged out of the bearing seat, and the water vapor can be discharged out of the bearing seat through the ventilation hole, thereby effectively reducing the risk of water vapor accumulation in the bearing seat. Further, when the heating element is working, the heat generated by the heating element is transmitted to the gas space through the bearing seat. As the temperature rises, the water vapor molecules in the gas space evaporate, thereby accelerating the discharge of water vapor from the inside of the bearing seat to the outside through the ventilation hole, avoiding rusting and damage of the first bearing and the second bearing due to long-term contact with water vapor. The heating element can also heat the bearing seat and its interior. The heat can be transmitted to the bearing through the bearing seat, reducing the viscosity of the lubricating grease and enhancing its flowability. This is conducive to reducing the frictional resistance between the bearing and the rotating shaft, thereby reducing the torque of the laundry treatment apparatus when it is started, and reducing energy consumption.

[0009] In some embodiments of the present application, a laundry treatment apparatus is provided, the rear end surface of the bearing seat is exposed to the back surface of the outer drum; the end of the ventilation hole away from the gas space is arranged on the rear end surface of the bearing seat and exposed to the back surface of the outer drum; and the heating element is arranged on the rear end of the bearing seat and exposed to the back surface of the outer drum.

[0010] Another technical scheme in the above technical scheme has the following advantages or beneficial effects: by exposing the rear end surface of the bearing seat to the back surface of the outer drum, that is, the rear end of the bearing seat is not closed by the outer drum, and the end of the ventilation hole away from the gas space is arranged on the rear end surface of the bearing seat, that is, the ventilation hole penetrates through the rear end of the bearing seat, and the ventilation hole is also exposed to the back surface of the outer drum. In this way, the ventilation hole can be communicated with the outside, and the water vapor can be more smoothly discharged from the inside of the bearing seat to the outside through the ventilation hole. Moreover, by arranging the heating element on the rear end of the bearing seat, the worker can install the heating element on the bearing seat without disassembling too many parts, thereby simplifying the installation process of the heating element.

[0011] In some embodiments of the present application, a laundry treatment apparatus is provided, the heating element is annular and arranged around the circumference of the rear end of the bearing seat.

[0012] Another technical scheme in the above technical scheme has the following advantages or beneficial effects: by configuring the heating element into an annular structure, the annular heating element can heat around the entire circumference of the rear end of the bearing seat, so that the heat can be more uniformly distributed and transmitted to the gas space arranged around the circumference outside the rotating shaft, thereby avoiding the situation of local overheating or insufficient heating of the bearing seat.

[0013] In some embodiments of the present application, a laundry treating apparatus is provided, the bearing seat is provided with a boss, the boss is protrusively arranged on the rear end surface of the bearing seat and exposed on the back surface of the outer cylinder, the air vent hole penetrates the rear end surface of the boss along the end away from the gas space, and the heating element is sleeved on the boss.

[0014] Another technical solution in the above technical solution has the following advantages or beneficial effects: since the boss can serve as a reference surface for the installation of the heating element, the boss provides an accurate positioning and fixing point for the heating element, thereby simplifying the installation process and improving the installation accuracy. Further, the air vent hole penetrates the rear end surface of the boss along the end away from the gas space, so that the heating element can heat the boss directly and transmit the heat to the air vent hole through the boss, which can make the water vapor at the air vent hole more quickly discharged to the outside through the air vent hole.

[0015] In some embodiments of the present application, a laundry treating apparatus is provided, the air vent hole includes a first air vent hole, the first air vent hole is located below the bottom of the gas space, and the first air vent hole is in communication with the bottom region of the gas space.

[0016] Another technical solution in the above technical solution has the following advantages or beneficial effects: by arranging the first air vent hole below the bottom of the gas space, the first air vent hole is used to communicate the bottom region of the gas space with the outside, so that water can be more efficiently discharged from the gas space, improving the water discharge efficiency and reducing the water residence time in the bearing seat. In this way, it helps to reduce the risk of rusting and damaging of the first bearing and the second bearing due to long-time contact with water, and also reduces the noise and vibration generated during the working rotation of the rotating shaft, thereby improving the stability and durability of the laundry treating apparatus.

[0017] In some embodiments of the present application, a laundry treating apparatus is provided, the first air vent hole is arranged along the axial direction of the bearing seat, the rear end of the first air vent hole penetrates the rear end surface of the bearing seat, and the front end of the first air vent hole is in communication with the bottom region of the gas space.

[0018] Another technical solution in the above technical solution has the following advantages or beneficial effects: the first air vent hole is arranged along the axial direction of the bearing seat, the extending direction of the first air vent hole is consistent with the axial direction of the bearing seat and the rotating shaft, the rear end of the first air vent hole penetrates the rear end surface of the bearing seat and is in communication with the outside, and the front end of the first air vent hole is directly in communication with the bottom region of the gas space. The axial arrangement of the first air vent hole enables the water vapor to be more directly and efficiently discharged through the hole, thereby reducing the water vapor residence time in the bearing seat and further reducing the risk of rusting and damaging of the bearing.

[0019] In some embodiments of the present application, a laundry treating apparatus is provided, wherein a hole wall at the bottom of the gas space is provided with a first vent groove, an upper end of the first vent groove is in communication with the gas space, and a lower end of the first vent groove is in communication with one end of the first vent hole close to the gas space.

[0020] Another technical solution in the above technical solution has the following advantages or beneficial effects: by providing the first vent groove on the hole wall at the bottom of the gas space, the first vent groove can communicate the gas space with the first vent hole, and under the action of gravity, liquid water can directly deposit on the hole wall at the bottom of the gas space and can be directly discharged out of the bearing seat through the first vent groove and the first vent hole.

[0021] In some embodiments of the present application, a laundry treating apparatus is provided, wherein the vent hole comprises a second vent hole, the second vent hole is located above the top of the gas space, and the second vent hole is in communication with the bottom region of the gas space.

[0022] Another technical solution in the above technical solution has the following advantages or beneficial effects: by providing the second vent hole above the top of the gas space, the second vent hole is used to communicate the top region of the gas space with the outside and provide an airflow passage, so that the water vapor accumulated at the top of the gas space can be more efficiently discharged from the gas space, thereby reducing the residence time of water vapor inside the bearing seat. In this way, it helps to reduce the risk of rusting and damaging the first bearing and the second bearing due to long-term contact with water vapor, and also reduces the noise and vibration generated during the operation of the rotating shaft, thereby improving the stability and durability of the laundry treating apparatus.

[0023] In some embodiments of the present application, a laundry treating apparatus is provided, wherein the second vent hole is arranged to extend along the axial direction of the bearing seat, a rear end of the second vent hole penetrates through the rear end surface of the bearing seat, and a front end of the second vent hole is in communication with the top region of the gas space.

[0024] Another technical solution in the above technical solution has the following advantages or beneficial effects: the second vent hole is arranged to extend along the axial direction of the bearing seat, the extending direction of the second vent hole is consistent with the axial direction of the bearing seat and the rotating shaft, the rear end of the second vent hole penetrates through the rear end surface of the bearing seat, so as to be in communication with the outside; and the front end is in direct communication with the top region of the gas space. The axial extension arrangement of the second vent hole enables the water vapor to be discharged more directly and efficiently through the hole, thereby reducing the residence time of water vapor inside the bearing seat and further reducing the risk of rusting and damaging the bearing.

[0025] In some embodiments of this application, a clothing processing device is provided, wherein a second ventilation groove is provided on the top wall of the gas space, the lower end of the second ventilation groove is connected to the gas space, and the upper end of the second ventilation groove is connected to the end of the second ventilation hole near the gas space.

[0026] Another technical solution in the above-mentioned technical solution has the following advantages or beneficial effects: by providing a second vent groove on the hole wall at the top of the gas space, the second vent groove can connect the gas space with the second vent hole. Moreover, since water vapor usually accumulates at the top of the gas space, the water vapor can be directly discharged from the bearing housing through the second vent groove and the second vent hole at the top. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the specification, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of a garment processing device according to an embodiment of this application;

[0029] Figure 2 for Figure 1 Schematic diagram of the rear side of the inner and outer cylinders;

[0030] Figure 3 for Figure 2 A cross-sectional schematic diagram of AA in the middle;

[0031] Figure 4 for Figure 2 A three-dimensional schematic diagram of the intermediate bearing assembly;

[0032] Figure 5 for Figure 4 An exploded view;

[0033] Figure 6 for Figure 3 A partial enlarged view of the bearing assembly;

[0034] Figure 7 for Figure 1 Schematic diagram of the rear side of the inner and outer cylinders;

[0035] Figure 8 for Figure 7 An exploded view;

[0036] Figure 9 for Figure 2 Schematic diagram of the heating element;

[0037] Figure 10 This is a schematic diagram of the control circuit structure of a garment processing device according to an embodiment of this application.

[0038] Figure 11 forFigure 4 A schematic view of the back of the middle bearing seat;

[0039] Figure 12 A schematic view of the back of the middle bearing seat; Figure 11 A schematic view of the back of the middle bearing seat;

[0040] Figure 13 A schematic view of the back of the middle bearing seat; Figure 11 A schematic view of the back of the middle bearing seat;

[0041] Figure 14 A schematic view of the back of the middle bearing seat; Figure 6 An enlarged view of a part B of the middle bearing seat;

[0042] Figure 15 An enlarged view of a part D of the middle bearing seat; Figure 13 An enlarged view of a part D of the middle bearing seat;

[0043] Figure 16 A schematic view of the back of the middle bearing seat from another perspective; Figure 11 A schematic view of the back of the middle bearing seat from another perspective;

[0044] Figure 17 An enlarged view of a part E of the middle bearing seat; Figure 16 An enlarged view of a part E of the middle bearing seat;

[0045] Correspondence between the reference signs and the component names is as follows:

[0046] 1, cabinet; 101, assembly hole; 11, cabinet door; 12, outer cylinder; 13, connecting arm;

[0047] 2, bearing device; 201, mounting through hole; 202, gas space; 203, connecting hole; 204, air hole; 2041, first air hole; 2042, second air hole; 205, first air groove; 206, second air groove;

[0048] 21, bearing seat; 211, first mounting position; 212, second mounting position; 22, rotating shaft; 23, first bearing; 24, second bearing; 25, oil seal; 26, boss;

[0049] 3, heating piece; 301, notch; 31, first connecting end; 32, second connecting end; 33, first wiring end; 34, second wiring end;

[0050] 4, temperature sensor;

[0051] 5, controller. DETAILED DESCRIPTION

[0052] The utility model provides a kind of clothes processing equipment, to make the purpose, technical scheme and effect of the utility model more clear, definite, the following referring to drawing and taking example further detailedly to the utility model should be understood, the specific embodiment described here is only used to explain the utility model, and is not used to limit the protection scope of the utility model.

[0053] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms "upper", "lower", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0054] In the description of the utility model, it needs to be understood that the terms "mounting", "connection", "connecting" should be understood in a broad sense unless otherwise explicitly specified and limited, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements or the interaction relationship between the two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0055] Figure 1 It is a schematic view of the clothes processing equipment of an embodiment of the present application.

[0056] As shown in the drawings, Figure 1 In some embodiments, the clothes processing equipment can include a cabinet 1. The cabinet 1 can be the overall structure outside the washing machine, and the cabinet 1 is a hollow structure, wherein other component structures of the washing machine can be arranged, such as circuit structure (not shown in the drawings), air duct structure (not shown in the drawings), driving mechanism (not shown in the drawings) and drain valve assembly (not shown in the drawings) and the like.

[0057] It should be noted that the clothes processing equipment can be a clothes dryer or a washing and drying integrated machine or other clothes processing equipment.

[0058] As shown in the drawings, Figure 1 In some embodiments, the cabinet door 11 and the cabinet 1 can be connected through a hinge, and the cabinet door 11 can rotate around the axis of the hinge, thereby realizing the opening and closing of the cabinet door 11 and opening and closing the clothes feeding port.

[0059] In some embodiments, the drum assembly can be arranged in the cabinet 1. The front end face of the drum assembly is formed with a drum port, which is opposite to the clothes feeding port of the cabinet 1 and the cabinet door 11. The drum assembly is formed with a clothes processing cavity. The drum port can be in communication with the clothes processing cavity. The clothes processing cavity can be used as a storage position for work procedures such as clothes washing and drying. After the cabinet door 11 is opened, the clothes can be sequentially put into the clothes processing cavity in the drum assembly through the clothes feeding port on the front side of the cabinet 1 and the drum port of the drum assembly, and dried.

[0060] In some embodiments, the drum assembly is rotatably arranged in the cabinet 1. During the drying process of the clothes in the clothes treatment cavity, the drum assembly can drive the clothes in the clothes treatment cavity to rotate, thereby improving the drying uniformity and efficiency of the clothes.

[0061] In some embodiments, the drum assembly is rotatably arranged in the cabinet 1. During the drying process of the clothes in the clothes treatment cavity, the drum assembly can drive the clothes in the clothes treatment cavity to rotate, thereby improving the drying uniformity and efficiency of the clothes.

[0062] In some embodiments, the drum assembly can include an inner drum (not shown in the figure). The inner drum is rotatably arranged in the inner space of the outer drum 12, and a clothes treatment cavity can be formed in the inner drum for containing clothes to be cleaned. The drum opening of the inner drum can be arranged opposite to the drum opening of the outer drum 12, i.e., the front side opening of the clothes treatment cavity is arranged opposite to the drum opening of the outer drum 12 and the clothes feeding opening. Therefore, the clothes can enter the clothes treatment cavity in sequence from the clothes feeding opening of the cabinet 1, the drum opening of the outer drum 12, and the drum opening of the inner drum.

[0063] In some embodiments, the outer drum 12 and the inner drum can be coaxially arranged inside and outside. A hole can be formed in the outer wall of the inner drum, and water in the outer drum 12 can enter the inner drum through the hole to clean the clothes in the clothes treatment cavity of the inner drum. At the same time, during the drying of the clothes, the air in the clothes treatment cavity of the inner drum can also enter the inner space of the outer drum 12 through the hole.

[0064] In some embodiments, a driving device (not shown in the figure) can be arranged in the cabinet 1. The driving device can be arranged outside the outer drum 12, and the output end of the driving device can extend into the inner drum from the center of the rear end of the outer drum 12 to drive the inner drum to rotate relative to the outer drum 12, thereby cleaning the clothes in the inner drum.

[0065] Figure 2 For Figure 1 A rear view of the inner and outer drums; Figure 3 For Figure 2 A cross-sectional view of A-A.

[0066] As Figure 2 and Figure 3 shown, in some embodiments, the clothes treatment device can include a rotating shaft 22. The rotating shaft 22 is rotatably arranged on the outer drum 12. One end of the rotating shaft 22 is used to be in transmission connection with the driving device, and the other end of the rotating shaft 22 is connected with the inner drum, which can drive the inner drum to rotate when the rotating shaft 22 rotates.

[0067] As Figure 3As shown in some embodiments, the laundry treating apparatus can include a connecting arm 13. The connecting arm 13 can be provided on the inner drum, and the connecting arm 13 can be connected with the rotating shaft 22, which can drive the connecting arm 13 and the inner drum to rotate synchronously.

[0068] Figure 4 For Figure 2 a perspective view of the bearing device; Figure 5 For Figure 4 an exploded view.

[0069] As Figure 3 and Figure 4 shown in some embodiments, the laundry treating apparatus can include a bearing device 2. The bearing device 2 can be provided on the back of the outer drum 12. The bearing device 2 can be used to support the rotating shaft 22.

[0070] As Figure 3 and Figure 4 shown in some embodiments, the bearing device 2 can include a bearing seat 21. The bearing seat 21 can be provided on the back wall of the outer drum 12. The bearing seat 21 can be provided with a mounting through hole 201. The mounting through hole 201 can pass through the front and back ends of the bearing seat 21. The rotating shaft 22 can be provided in the mounting through hole 201. The bearing seat 21 can be fixedly provided on the back of the outer drum 12 and used to support the rotating shaft 22. The rotating shaft 22 is rotatably provided in the mounting through hole 201, and under the drive of the driving device, the rotating shaft 22 can rotate relative to the bearing seat 21 to drive the inner drum to rotate.

[0071] As Figure 3 shown in some embodiments, the center of the back side of the outer drum 12 can be provided with a fitting hole 101. The bearing seat 21 can be fitted into the fitting hole 101. In this way, the bearing seat 21 can be fixed at the center of the outer drum 12.

[0072] As Figure 4 shown in some embodiments, the bearing seat 21 can be provided with a connecting hole 203, which can be used to adapt to the outer drum 12 and can be provided for a connecting piece (not shown in the figure) to pass through, so as to fix the bearing seat 21 at the center of the outer drum 12.

[0073] As Figure 5 shown in some embodiments, the bearing seat 21 can be provided with a first bearing 23. The first bearing 23 can be fitted into the mounting through hole 201, and the first bearing 23 can be provided on the rotating shaft 22. Specifically, the inner ring of the first bearing 23 is provided on the surface of the rotating shaft 22, and the outer ring of the first bearing 23 is nested in the hole wall of the mounting through hole 201. The first bearing 23 can be used to support the rotating shaft 22 and reduce the wear between the rotating shaft 22 and the bearing seat 21.

[0074] As Figure 3 andFigure 5 As shown in some embodiments, the bearing device 2 comprises an oil seal 25. The oil seal 25 can be arranged at the front end of the first bearing 23, for sealing the connection between the outer cylinder 12 and the bearing seat 21. By arranging the oil seal 25 at the front end of the first bearing 23, the impurities such as dust, fiber scraps, water vapor, etc. of the outer cylinder 12 and the inner cylinder can be prevented from entering the bearing seat 21 to a greater extent.

[0075] As shown in some embodiments, the bearing seat 21 can be provided with a second bearing 24. The second bearing 24 can be arranged in the mounting through hole 201. The second bearing 24 can be sleeved on the rotating shaft 22, and the second bearing 24 can be arranged at the rear side of the first bearing 23 at intervals. Figure 3 Figure 5 Specifically, the inner ring of the second bearing 24 is sleeved on the surface of the rotating shaft 22, and the outer ring of the second bearing 24 is nested in the hole wall of the mounting through hole 201. Moreover, the first bearing 23 and the second bearing 24 are arranged at intervals on the rotating shaft 22, which can improve the stability of the support of the rotating shaft 22.

[0076]

[0077] Figure 6 For Figure 3 A partial enlarged view of the bearing device.

[0078] As shown in some embodiments, the inner wall of the mounting through hole 201, the outer surface of the rotating shaft 22, the first bearing 23 and the second bearing 24 are closed to form a gas space 202; the bearing seat 21 is provided with a ventilation hole 204, one end of the ventilation hole 204 communicates with the gas space 202, and the other end of the ventilation hole 204 communicates with the outside. Figure 5 Figure 6 As shown in some embodiments, the bearing device 2 can comprise a heating element 3. The heating element 3 can be arranged on the bearing seat 21. The heating element 3 can be configured to heat the bearing seat 21, so that heat is transmitted to the gas space 202 through the bearing seat 21.

[0079] As shown in some embodiments, the bearing device 2 can comprise a heating element 3. The heating element 3 can be arranged on the bearing seat 21. The heating element 3 can be configured to heat the bearing seat 21, so that heat is transmitted to the gas space 202 through the bearing seat 21. Figure 6 It should be noted that due to the inner cylinder side during washing, drying and other working processes, part of the water vapor still enters the gas space 202 through the side of the first bearing 23, and this part of the water vapor is often difficult to discharge, and long-term accumulation in the bearing seat 21 can easily cause the first bearing 23 and the second bearing 24 to rust and damage, produce noise, etc.

[0080]

[0081] ​​​​In the present application, by providing the ventilation hole 204 on the bearing seat 21, one end of the ventilation hole 204 is communicated with the first bearing 23 and the second bearing 24, and the other end of the ventilation hole 204 is communicated with the outside, thereby providing a channel for the water vapor accumulated in the gas space 202 to discharge out of the bearing seat 21, and the water vapor can be discharged to the outside of the bearing seat 21 through the ventilation hole 204, thereby effectively reducing the risk of water vapor accumulation in the bearing seat 21, and avoiding problems such as rusting and damage of the first bearing 23 and the second bearing 24 caused by long-term contact with water vapor.

[0082] Further, when the heating element 3 is working, the heat generated by the heating element 3 is transmitted to the gas space 202 through the bearing seat 21, and as the temperature rises, the water vapor molecules in the gas space 202 evaporate, thereby accelerating the discharge of water vapor from the inside of the bearing seat 21 to the outside through the ventilation hole 204. Moreover, as the heating element 3 works, it can also make the air in the gas space 202 expand as a whole, while accelerating the thermal motion of the water vapor in the gas space 202, further promoting the discharge of the water vapor to the outside through the ventilation hole 204.

[0083] On the other hand, the heating element 3 can also heat the bearing seat 21 and its interior, and the heat can be transmitted to the bearing through the bearing seat 21, thereby heating the lubricating grease inside the bearing seat 21, reducing the viscosity of the lubricating grease and enhancing its flowability, which is beneficial to reduce the frictional resistance between the bearing and the rotating shaft 22, so that the torque of the clothes treatment equipment when starting is reduced, and the energy consumption is reduced. Moreover, it can reduce the risk of belt slip and noise, and at the same time, due to the reduction of the starting torque, the vibration and noise of the clothes treatment equipment during the starting process will also be reduced accordingly, improving the user's experience.

[0084] It should be noted that the heating of the bearing seat 21 by the heating element 3 in the present application consumes a certain amount of electric energy, but compared with the additional energy consumption caused by the large starting torque, the energy saving effect is more significant, making the clothes treatment equipment more in line with the current energy saving and environmental protection development trend.

[0085] In some embodiments, the heating element 3 can adopt a PTC heater.

[0086] In other embodiments, the heating element 3 can adopt, for example, a resistance heating wire, an electrothermal film, etc.

[0087] Figure 7 For Figure 1 the rear side view of the inner and outer drums; Figure 8 for Figure 7 an exploded view of the clothes treatment equipment.

[0088] As Figure 7 and Figure 8As shown, in some embodiments, the rear end face of the bearing housing 21 may be exposed on the back side of the outer cylinder 12. The end of the vent 204 away from the gas space 202 may be located on the rear end face of the bearing housing 21 and exposed on the back side of the outer cylinder 12.

[0089] Specifically, by exposing the rear end face of the bearing housing 21 to the back of the outer cylinder 12, that is, the rear end of the bearing housing 21 is not closed by the outer cylinder 12, and the end of the vent 204 away from the gas space 202 is set on the rear end face of the bearing housing 21, that is, the vent 204 penetrates the rear end of the bearing housing 21, and the vent 204 is also exposed to the back of the outer cylinder 12, the vent 204 can be connected to the outside, so that water vapor can be discharged from the inside of the bearing housing 21 to the outside through the vent 204 more smoothly.

[0090] like Figure 6 and Figure 7 As shown, in some embodiments, the heating element 3 may be disposed on the rear end of the bearing housing 21. The heating element 3 may be exposed on the back side of the outer cylinder 12.

[0091] Since the heating element 3 is installed on the rear end of the bearing housing 21, the operator can install the heating element 3 on the bearing housing 21 without disassembling too many parts, simplifying the installation process. On the other hand, the heating element 3 is also exposed on the back of the outer cylinder 12, which avoids the need for the heat from the heating element 3 to be transferred to the bearing housing 21 through multiple layers of materials or structures. This reduces the heat transfer path between the heating element 3 and the gas space 202, allowing more of the heat generated by the heating element 3 during the heating process to be transferred to the bearing housing 21.

[0092] In some other embodiments, the rear end face of the bearing housing 21 may also be flush with the back face of the outer cylinder 12. The heating element 3 may be embedded inside the bearing housing 21, and during the heating process, the heat generated by the heating element 3 is transferred to the gas space 202 through the bearing housing 21.

[0093] Figure 9 for Figure 2 A schematic diagram of the heating element.

[0094] like Figure 9 As shown, in some embodiments, the heating element 3 may be annular. The heating element 3 may be circumferentially arranged around the rear end of the bearing housing 21.

[0095] Wherein, by configuring the heating element 3 as a ring structure, the ring-shaped heating element 3 can heat the entire circumference of the rear end of the bearing seat 21, so that the heat can be more evenly distributed and transmitted to the gas space 202 arranged outside the rotating shaft 22 in the circumferential direction, thereby avoiding the situation of local overheating or insufficient heating of the bearing seat 21. In this way, not only can the gas space 202 be heated more evenly, so that the water vapor in the gas space 202 can be more efficiently and quickly discharged through the vent hole 204, but also the lubricating grease at the first bearing 23, the second bearing 24 and the oil seal 25 in the bearing seat 21 can be fully heated and improved in flowability.

[0096] Further, since the ring-shaped heating element 3 can be arranged around the entire circumference of the rear end of the bearing seat 21, the heating area of the heating element 3 on the bearing seat 21 can be larger, and the heat can be transmitted to the gas space 202 inside the bearing seat 21 more quickly. Compared with the point or linear heating method, the ring heating can more effectively utilize the power of the heating assembly and improve the heating efficiency. Moreover, the ring-shaped heating element 3 can be more compactly arranged around the rear end of the bearing seat 21, fully utilizing the internal space of the clothes treatment apparatus.

[0097] In other embodiments, the heating element 3 can also be configured as a block of various shapes such as a rectangle, a circle, or the like.

[0098] As shown in Figs. Figure 3 and Figure 6 In some embodiments, the bearing seat 21 can be provided with a boss 26. The boss 26 can be protrudingly arranged on the rear end surface of the bearing seat 21. The boss 26 can be exposed to the back surface of the outer cylinder 12. The vent hole 204 can penetrate the rear end surface of the boss 26 along the end away from the gas space 202. The heating element 3 can be sleeved on the boss 26.

[0099] Wherein, by arranging the boss 26 on the bearing seat 21 and sleeving the heating element 3 on the boss 26, the heating element 3 can be exposed to the back surface of the outer cylinder 12.

[0100] Specifically, since the boss 26 can serve as a reference surface for installing the heating element 3, the arrangement of the boss 26 can provide the heating element 3 with an accurate positioning and fixing point, thereby simplifying the installation process and improving the installation accuracy. At the same time, since the heating element 3 is sleeved on the boss 26, it can be easily removed for maintenance or replacement through a simple disassembly operation, making the maintenance and replacement of the heating element 3 more simple. Moreover, the ring-shaped heating element 3 can be closely sleeved on the boss 26, and the heat can be more stably transmitted to the inside of the bearing seat 21.

[0101] Furthermore, the vent 204 extends through the rear end face of the boss 26 at the end away from the gas space 202. In this way, the heating element 3 can directly heat the boss 26 and transfer the heat to the vent 204 through the boss 26, so that the water vapor at the vent 204 can be discharged to the outside more quickly through the vent 204.

[0102] like Figure 3 and Figure 7 As shown, in some embodiments, the annular structure of the heating element 3 may have a notch 301. The heating element 3 can elastically open at the notch 301 to adjust the inner diameter of the heating element 3 so that the heating element 3 fits with the boss 26.

[0103] Specifically, the heating element 3 has a notch 301, making its annular structure discontinuous. The notch 301 on the annular structure of the heating element 3 allows it to elastically open, not only enabling the heating element 3 to better accommodate bosses 26 of different sizes and shapes, increasing compatibility between the heating element 3 and the bosses 26, but also allowing workers to easily fit the heating element 3 onto the bosses 26 without complex adjustments or modifications. This simplifies and speeds up the installation process, reducing installation difficulty and cost.

[0104] On the other hand, the notch 301 of the heating element 3 gives it the ability to open elastically, allowing the heating element 3 to fit tightly against the boss 26, which is conducive to the effective transfer of heat and can further enhance the connection stability between the heating element 3 and the boss 26. During the heating process, the heating element 3 can better withstand the thermal stress and deformation caused by temperature changes, thereby maintaining the stability of its shape and position.

[0105] In some embodiments, the heating element 3 may be provided with a terminal. The terminal is used to make an electrical connection with the electronic control component, thereby energizing or de-energizing the heating element 3.

[0106] like Figure 9 As shown, in some embodiments, a first connecting end 31 and a second connecting end 32 may be respectively provided on both sides of the notch 301 of the heating element 3. The wiring terminals may include a first wiring terminal 33 and a second wiring terminal 34. The first wiring terminal 33 may be located at the first connecting end 31 for connection to one end of the electronic control component. The second wiring terminal 34 may be located at the second connecting end 32 for connection to the other end of the electronic control component.

[0107] Wherein, by setting the first terminal 33 and the second terminal 34 on the first connecting end 31 and the second connecting end 32 respectively, the first terminal 33 is set on the first connecting end 31 and the second terminal 34 is set on the second connecting end 32 correspondingly. The first terminal 33 can be connected with one end of the electric control component of the clothes treatment equipment, and the first terminal 33 can be connected with the other end of the electric control component of the clothes treatment equipment, which can simplify the circuit layout of the heating element 3 and the electric control component, and the heating element 3 can be easily connected with the electric control component without additional connecting components such as terminal posts or terminal clamps on the heating element 3, thereby reducing the complexity and cost of circuit design.

[0108] Figure 10 A control circuit structure diagram of the clothes treatment equipment according to an embodiment of the present application.

[0109] As shown in Figure 10 , in some embodiments, the clothes treatment equipment can include a temperature sensor 4. The temperature sensor 4 can be arranged on the bearing seat 21. The temperature sensor 4 is used to sense the temperature of the bearing seat 21. By arranging the temperature sensor 4 on the bearing seat 21, the temperature sensor 4 can accurately sense the temperature of the bearing seat 21 in real time.

[0110] As shown in Figure 10 , in some embodiments, the clothes treatment equipment can include a controller 5. The controller 5 can be electrically connected with the temperature sensor 4 and the heating element 3 respectively, so as to control the start or stop of the heating element 3 according to the temperature of the bearing seat 21.

[0111] Wherein, by the electrical connection of the controller 5 with the temperature sensor 4 and the heating element 3 respectively, the automatic control of the start or stop of the heating element 3 is realized. Specifically, the controller 5 can receive the temperature information of the bearing seat 21 from the temperature sensor 4, and then can automatically adjust the working state of the heating element 3 according to the actual temperature of the bearing seat 21, so that the bearing seat 21 can be maintained within a suitable working temperature range, and the problems such as high product energy consumption and large start-up noise caused by large start-up torque of the equipment due to poor flowability of the lubricating grease inside the bearing seat 21 at low temperature can be avoided.

[0112] Figure 12 A sectional view of Figure 11 ; Figure 13 A front view of Figure 11 ; Figure 14 A B enlarged view of Figure 6 ; Figure 15 A D enlarged view of Figure 13 ;

[0113] As shown in Figure 6 and Figure 12As shown, in some embodiments, the vent hole 204 can include a first vent hole 2041. The first vent hole 2041 can be located below the bottom of the gas space 202. The first vent hole 2041 can be in communication with the bottom region of the gas space 202.

[0114] Since the liquid water accumulated in the gas space 202 of the bearing seat 21 is prone to accumulate in the bottom region of the gas space 202 under the action of gravity, by arranging the first vent hole 2041 below the bottom of the gas space 202, the first vent hole 2041 is used to communicate the bottom region of the gas space 202 with the outside, so that the water can be more efficiently discharged from the gas space 202, improving the water discharge efficiency and reducing the water residence time in the bearing seat 21. In this way, it helps to reduce the risk of rusting and damaging of the first bearing 23 and the second bearing 24 due to long-time contact with water, and also reduces the noise and vibration generated during the working rotation of the rotating shaft 22, improving the stability and durability of the laundry treating apparatus.

[0115] As shown in FIG. 1, in some embodiments, the vent hole 204 can include a first vent hole 2041. The first vent hole 2041 can be located below the bottom of the gas space 202. The first vent hole 2041 can be in communication with the bottom region of the gas space 202. Figure 6

[0116] Specifically, the first vent hole 2041 is arranged outside the bottom of the gas space 202. The first vent hole 2041 is arranged in the axial direction of the bearing seat 21, and the extension direction of the first vent hole 2041 is consistent with the axial direction of the bearing seat 21 and the rotating shaft 22. The rear end of the first vent hole 2041 penetrates the rear end surface of the bearing seat 21, so as to be in communication with the outside. The front end of the first vent hole 2041 is in direct communication with the bottom region of the gas space 202. The axial arrangement of the first vent hole 2041 enables the water vapor to be discharged more directly and efficiently through the hole, thereby reducing the water vapor residence time in the bearing seat 21 and further reducing the risk of bearing rusting and damage.

[0117] In other embodiments, the first vent hole 2041 can be arranged to extend downwardly and obliquely in the direction from front to rear of the bearing seat 21. In the oblique downward extension direction of the hole, the liquid water can be quickly discharged.

[0118] As shown in FIG. 1, in some embodiments, the vent hole 204 can include a first vent hole 2041. The first vent hole 2041 can be located below the bottom of the gas space 202. The first vent hole 2041 can be in communication with the bottom region of the gas space 202. Figure 13 Figure 15 As shown in FIG. 1, in some embodiments, the vent hole 204 can include a first vent hole 2041. The first vent hole 2041 can be located below the bottom of the gas space 202. The first vent hole 2041 can be in communication with the bottom region of the gas space 202.

[0119] ​​The first ventilation groove 205 is arranged on the hole wall at the bottom of the gas space 202, and can communicate the gas space 202 with the first ventilation hole 2041. Under the action of gravity, the liquid water can directly deposit on the hole wall at the bottom of the gas space 202 and can be directly discharged out of the bearing seat 21 through the first ventilation groove 205 and the first ventilation hole 2041.

[0120] Specifically, the upper end of the first ventilation groove 205 communicates with the gas space 202, so that the water vapor in the gas space 202 can enter the first ventilation groove 205. The lower end of the first ventilation groove 205 communicates with the end of the first ventilation hole 2041 close to the gas space 202, so that the water vapor can smoothly enter the first ventilation hole 2041 from the ventilation groove and be discharged to the outside.

[0121] In some embodiments, the first ventilation groove 205 can be arranged on the hole wall of the mounting through hole 201 at any position between the first bearing 23 and the second bearing 24.

[0122] As shown in Figure 14 and Figure 15 In some embodiments, the bearing seat 21 can be provided with a first mounting position 211. The first mounting position 211 can be arranged on the front side of the gas space 202. The first bearing 23 can be arranged on the first mounting position 211.

[0123] Specifically, the inner hole wall of the mounting through hole 201 can be protruded or recessed to form the first mounting position 211, so that one end of the first bearing 23 can abut against the inner hole wall of the mounting through hole 201, and then be limited in the bearing seat 21.

[0124] In some embodiments, the bearing seat 21 can be provided with a second mounting position 212. The second mounting position 212 can be arranged on the rear side of the gas space 202. The second bearing 24 can be arranged on the second mounting position 212.

[0125] Specifically, the inner hole wall of the mounting through hole 201 can be protruded or recessed to form the second mounting position 212, so that one end of the second bearing 24 can abut against the inner hole wall of the mounting through hole 201, and then be limited in the bearing seat 21, improving the installation stability of the second bearing 24, and the fixing structure is simple.

[0126] As shown in Figure 6 , Figure 11 and Figure 12As shown, in some embodiments, the first vent groove 205 can be disposed at the front end of the first vent hole 2041. The first vent groove 205 can be opened by the rear side wall of the first mounting position 211 towards the direction of the gas space 202. Wherein, by disposing the first vent groove 205 at the front end of the first vent hole 2041, the first vent groove 205 can be in communication with the bottom of the gas space 202 and close to the front side area, that is, the first vent groove 205 is disposed at the position close to the outer cylinder 12 side of the gas space 202, thereby facilitating the water entering the gas space 202 through the outer cylinder 12 or the inner cylinder at the beginning to pass through the first vent groove 205 more quickly and efficiently, and facilitating the water in the gas space 202 to be discharged to the outside of the bearing seat 21. On the other hand, since the rear end of the first bearing 23 abuts against the rear side wall of the first mounting position 211, by recessing the first vent groove 205 on the rear side wall of the first mounting position 211 towards the direction of the gas space 202, the design process of the bearing seat 21 can be simplified, and the manufacturing cost is reduced and the manufacturing process is simplified by avoiding punching at other positions of the gas space 202 in the bearing seat 21.

[0127] As shown in Figure 13 and Figure 15 As shown, in some embodiments, the vent hole 204 can include a second vent hole 2042. The second vent hole 2042 is located above the top of the gas space 202. The second vent hole 2042 is in communication with the bottom area of the gas space 202.

[0128] Since the liquid water of the gas space 202 can evaporate to form water vapor, by disposing the second vent hole 2042 above the top of the gas space 202, the second vent hole 2042 is used to communicate the top area of the gas space 202 with the outside and provide an airflow passage, so that the water vapor accumulated at the top of the gas space 202 can be more efficiently discharged from the gas space 202, thereby reducing the residence time of the water vapor inside the bearing seat 21. In this way, it helps to reduce the risk of rusting and damaging the first bearing 23 and the second bearing 24 due to long-term contact with water vapor, and also reduces the noise and vibration generated during the working rotation of the rotating shaft 22, thereby improving the stability and durability of the clothes treatment equipment.

[0129] As shown in Figure 6 and Figure 12As shown, in some embodiments, the vent hole 204 can include a first vent hole 2041 and a second vent hole 2042. The first vent hole 2041 is located below the bottom of the gas space 202, and the second vent hole 2042 is located above the top of the gas space 202. The first vent hole 2041 and the second vent hole 2042 provide different exhaust paths for the liquid water and the steam in the gas space 202, respectively. Specifically, in the state where the heating element 3 is in the heating operation, the hot air in the gas space 202 rises, so that the steam in the gas space 202 can directly rise to the top and be exhausted through the second vent hole 2042, and the liquid water in the gas space 202 converges at the bottom of the gas space 202 and is exhausted through the first vent hole 2041. In this way, the liquid water can be exhausted to the outside of the bearing seat 21 through the first vent hole 2041, the steam can be exhausted to the outside of the bearing seat 21 through the second vent hole 2042, or the exhaust can be performed through the top and the bottom at the same time, so that the accumulation of water vapor in the gas space 202 can be more effectively reduced.

[0130] As Figure 12 shown, in some embodiments, the second vent hole 2042 can be arranged in the axial direction of the bearing seat 21. The rear end of the second vent hole 2042 can penetrate the rear end surface of the bearing seat 21. The front end of the second vent hole 2042 can be in communication with the top region of the gas space 202.

[0131] Specifically, the second vent hole 2042 is arranged outside the top of the gas space 202. The second vent hole 2042 is arranged in the axial direction of the bearing seat 21, and the extension direction of the second vent hole 2042 is consistent with the axial direction of the bearing seat 21 and the rotating shaft 22. The rear end of the second vent hole 2042 penetrates the rear end surface of the bearing seat 21, so as to be in communication with the outside. The front end of the second vent hole 2042 is in direct communication with the top region of the gas space 202. The axial arrangement of the second vent hole 2042 enables the water vapor to be more directly and efficiently exhausted through the hole, thereby reducing the residence time of the steam in the bearing seat 21 and further reducing the risk of rusting and damage of the bearing.

[0132] Figure 16 For Figure 11 another perspective view of the front side; Figure 17 For Figure 16 an enlarged view of part E of FIG. 6.

[0133] As Figure 16 and Figure 17 shown, in some embodiments, the hole wall at the top of the gas space 202 can be provided with a second vent groove 206. The lower end of the second vent groove 206 can be in communication with the gas space 202. The upper end of the second vent groove 206 can be in communication with the end of the second vent hole 2042 close to the gas space 202.

[0134] Specifically, by providing a second venting groove 206 on the hole wall at the top of the gas space 202, the second venting groove 206 can connect the gas space 202 with the second venting hole 2042. Moreover, since water vapor usually accumulates at the top of the gas space 202, the water vapor can be directly discharged from the bearing housing 21 through the second venting groove 206 and the second venting hole 2042 at the top.

[0135] Specifically, the lower end of the second vent 206 is connected to the gas space 202, allowing water vapor in the gas space 202 to enter the second vent 206. The upper end of the second vent 206 is connected to the end of the second vent 2042 near the gas space 202, allowing water vapor to smoothly enter the second vent 2042 from the second vent 206 and be discharged to the outside.

[0136] In some embodiments, the second vent groove 206 may be disposed on the wall of the mounting through hole 201 at any position between the first bearing 23 and the second bearing 24.

[0137] like Figure 12 and Figure 16 As shown, in some embodiments, the second vent groove 206 may be located at the front end of the second vent hole 2042. The second vent groove 206 may be formed from the rear sidewall of the first mounting position 211 toward the gas space 202.

[0138] By placing the second vent groove 206 at the front end of the second vent hole 2042, the second vent groove 206 can communicate with the top and front area of ​​the gas space 202. That is, the second vent groove 206 is located on the side of the gas space 202 near the outer cylinder 12. This facilitates the faster and more efficient passage of water vapor that initially enters the gas space 202 through the outer cylinder 12 or the inner cylinder through the second vent groove 206, which helps to discharge the water vapor in the gas space 202 to the outside of the bearing seat 21. On the other hand, since the rear end of the first bearing 23 abuts against the rear side wall of the first mounting position 211, the second vent groove 206 is recessed in the rear side wall of the first mounting position 211 towards the gas space 202. This simplifies the design process of the bearing seat 21, avoids drilling holes in other positions of the gas space 202 within the bearing seat 21, and reduces manufacturing costs and simplifies the manufacturing process.

[0139] like Figure 11 As shown, in some embodiments, the first vent groove 205 and the second vent groove 206 can be symmetrically arranged on the upper and lower sides of the first mounting position 211.

[0140] In some other embodiments, the circumferential side of the bearing seat 21 can be provided with third air holes 204 (not shown in the figure). The number of third air holes 204 can be multiple. The multiple third air holes 204 can be arranged at intervals along the circumference of the mounting through hole 201 of the bearing seat 21.

[0141] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the scope of the present application is limited by the appended claims.

Claims

1. A laundry treating apparatus, characterized by, The laundry treating apparatus comprises: a cabinet forming an outer shell of the laundry treating apparatus; an outer tub provided in the cabinet; a bearing seat provided at a rear wall of the outer tub, the bearing seat being provided with a mounting through hole penetrating through front and rear ends of the bearing seat; a rotating shaft rotatably provided on the outer tub, the rotating shaft penetrating through the mounting through hole; a first bearing provided in the mounting through hole, the first bearing being sleeved on the rotating shaft; a second bearing provided in the mounting through hole, the second bearing being sleeved on the rotating shaft, and the second bearing being arranged at a rear side of the first bearing in a spaced manner; a heating member provided on the bearing seat; wherein a gas space is enclosed between an inner wall of the mounting through hole, an outer surface of the rotating shaft, the first bearing and the second bearing; the bearing seat is provided with a vent hole, one end of the vent hole being in communication with the gas space, and the other end of the vent hole being in communication with the outside; the heating member is configured to heat the bearing seat, so that heat is transmitted to the gas space through the bearing seat.

2. The laundry treating apparatus according to claim 1, wherein a rear end surface of the bearing seat is exposed on a back surface of the outer tub; one end of the vent hole, which is away from the gas space, is provided on the rear end surface of the bearing seat and exposed on the back surface of the outer tub; the heating member is arranged on the rear end of the bearing seat, and the heating member is exposed on the back surface of the outer tub.

3. The laundry treating apparatus according to claim 2, wherein the heating member is annular and arranged around the circumference of the rear end of the bearing seat.

4. The laundry treating apparatus according to claim 3, wherein the bearing seat is provided with a boss, the boss being protrusively arranged on the rear end surface of the bearing seat and exposed on the back surface of the outer tub; the vent hole penetrates through the rear end surface of the boss along the end away from the gas space; the heating member is sleeved on the boss.

5. The laundry treating apparatus according to claim 1, wherein the vent hole comprises a first vent hole, the first vent hole being located below a bottom of the gas space and in communication with a bottom region of the gas space.

6. The laundry treating apparatus according to claim 5, wherein the first vent hole is arranged in an axial direction of the bearing seat, a rear end of the first vent hole penetrating through a rear end surface of the bearing seat, and a front end of the first vent hole being in communication with the bottom region of the gas space.

7. The laundry treating apparatus according to claim 6, wherein a hole wall of the bottom of the gas space is provided with a first vent groove, an upper end of the first vent groove being in communication with the gas space, and a lower end of the first vent groove being in communication with the end of the first vent hole close to the gas space.

8. The laundry treating apparatus according to claim 5, wherein the vent hole comprises a second vent hole, the second vent hole being located above a top of the gas space and in communication with the bottom region of the gas space.

9. The laundry treating apparatus according to claim 8, wherein The second vent hole is arranged along an axial extension of the bearing housing, a rear end of the second vent hole penetrates a rear end surface of the bearing housing, and a front end of the second vent hole communicates with a top region of the gas space. 10.The laundry treating apparatus of claim 9, wherein, A hole wall of the top of the gas space is provided with a second vent groove, a lower end of the second vent groove communicates with the gas space, and an upper end of the second vent groove communicates with one end of the second vent hole close to the gas space.

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