Air duct connection pipe for drum-type washing machine and washing machine

Abstract

An air duct connection pipe for a drum type washing machine and the washing machine, the drum type washing machine includes a dryer (6), an outer tub (2), and an inner tub (1) that is installed in the outer tub (2) and has a mesh, the air duct connection pipe includes a pipe body and a filter mesh (3), both ends of the pipe body are sealed and communicated with the housing of the dryer (6) and the cylindrical surface of the outer tub (2), respectively, and the end of the pipe body close to the outer tub (2) has at least two pipe ports, one of which communicates with an external water source and the other pipe port is covered by the filter mesh (3), and when the inner tub (1) rotates at a spin-drying rotation speed, water in the inner tub (1) or water that drops from the pipe ports onto the surface of the inner tub (1) can be blown off to the filter mesh (3). The filter screen (3) is automatically washed by utilizing the centrifugal force of water droplets generated when water is splashed by the inner tank (1). Water is dropped into the inner tank (1) from the water drop pipe opening, and as the inner tank (1) rotates, the water that falls on the surface of the inner tank (1) is splashed onto the filter screen (3), thereby washing the filter screen (3).

Description

[Technical Field]

[0001] The present application belongs to the technical field of washing machines, and specifically relates to an air duct connecting pipe for a drum-type washing machine and a washing machine. [Background technology]

[0002] A drum-type washing machine comprises an outer tub, an inner tub installed coaxially with the outer tub, a dryer, and a condenser. A mesh is provided on the wall of the inner tub, and the principle of dehydration is that when the inner tub rotates, water in the inner tub or water on the surface of the inner tub can be splashed outward in the radial direction through the mesh.

[0003] The drying principle of a drum-type washing machine is to use a fan to create a unidirectional circulation airway within the machine. When the drying function is activated, the blowing end of the fan drives room-temperature air, which first passes through the heating device, absorbing a large amount of heat, and then enters the tub, heating the damp clothes and generating a large amount of water vapor and air mixture. This mixture flows in the direction of air circulation to the condenser, releasing heat, and the water vapor turns into droplets and is discharged. The air releases heat and becomes room-temperature air, which then flows into the intake end of the fan and circulates. After a certain period of time, the water in the clothes is transferred and the clothes are dried.

[0004] Conventional drum-type washing machines generally do not have a filter at the tip of the fan, and when drying, clothes rub against each other, generating many fine fibers, which circulate with the air inside the washing machine and adhere to the surface of the fan impeller. Over time, the amount of fibers adhering to the fan impeller gradually increases, reducing the fan's air intake efficiency and reducing the air volume and speed. In this case, the heating device does not have enough air volume to dissipate heat, the temperature rises too quickly, and the machine starts and stops frequently, significantly reducing drying efficiency. As a result, the washing machine's alarm protection is activated, preventing the drying function from working, requiring users to wait for long periods of time for repairs, incurring additional costs and affecting daily life.

[0005] Some washing machines have a removable filter case at the end of the fan, which must be removed and cleaned after each drying cycle, resulting in a complex structure, an increased machine volume, and frequent manual cleaning, which detracts from the user experience. Summary of the Invention

[0006] To solve the above technical problems, the present application provides an air duct connecting pipe for a drum-type washing machine and the washing machine.

[0007] To solve the above technical problems, the present application adopts the following technical solution.

[0008] An air duct connection pipe for a drum-type washing machine, the drum-type washing machine including a dryer, an outer tub, and an inner tub installed in the outer tub and having a mesh, the air duct connection pipe including a pipe body and a filter net, both ends of the pipe body being in sealed communication with a housing of the dryer and a cylindrical surface of the outer tub, respectively, and the pipe body The outer tank The edge close to 2 It has two pipe openings, on the other hand The pipe outlet is connected to an external water source as a water downpipe outlet, The other pipe opening is completely covered by the filter net as the outlet pipe opening, and the inner tub rotates at the dehydration rotation speed. ,before Water that falls onto the surface of the inner tank from the water drop pipe opening can be splashed onto the filtration net, and the sealed connection between the pipe body and the outer tank is located on the cylindrical surface of the outer tank.

[0009] Furthermore, the distance between the filter screen and the inner tub is 30 mm or less, and the spin-drying rotation speed of the inner tub is 500 rpm or more.

[0010] The water outlet is not limited in shape, and may have any width as long as the water in the downpipe falls onto the surface of the inner tub with a relatively wide falling surface, and the water blown by the inner tub covers the entire filtration screen, not just a part of it.

[0011] In a more preferred embodiment of the present application, the edge of the water guide piece, the pipe wall of the downcomer nozzle, and the elongated water outlet are all arc-shaped. The arc-shaped water outlet has a length of 50mm to 200mm and a width of 1mm to 5mm. The water flows out of the arc-shaped water outlet passage and contacts the inner tub rotating at high speed. After being blown away by centrifugal force, the water can cover the entire filter screen, thereby achieving the goal of thoroughly cleaning the filter screen.

[0012] Furthermore, the pipe body, the filter screen, and the water guide pieces are either separate structures or integral structures.

[0013] The washing machine includes the air duct connection pipe.

[0014] Compared with the prior art, the present application has the following beneficial technical effects:

[0015] This application is a conventional washing machine with a multi-function air duct connection pipe installed in the drying system, which houses a filter device (filter screen) that does not require removal. The filter screen is automatically cleaned using the centrifugal force of water droplets generated when water is sprayed from the inner tub. Compared to manual cleaning, this application automatically cleans the filter screen during each spin cycle, effectively preventing clothing fibers from accumulating on the surface of the fan impeller for a long period of time and forming stubborn stains. When there are too many fibers from the clothing or the fibers fall too quickly, or when the kinetic energy generated by water spraying from the inner tub during the spin cycle is insufficient to achieve a cleaning effect, this application drops water into the inner tub from the water drop pipe, and as the inner tub rotates, the water that falls on the surface of the inner tub is sprayed onto the filter screen, thereby cleaning the filter screen. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of the overall structure of the present application. [Figure 2] FIG. 2 is an exploded view showing the water guide piece and the water downpipe port according to the present application. [Figure 3] FIG. 2 is a bottom view of the filtration net and water outlet according to the present application. [Figure 4] 1 is a schematic diagram showing the assembly of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0017] A preferred embodiment of the present application will be described in detail below with reference to the drawings.

[0018] As shown in FIG. 1, a drum-type washing machine comprises an outer tub 2, an inner tub 1 installed coaxially with the outer tub 2, a dryer 6, and a condenser. A mesh is provided on the wall of the inner tub 1, allowing water in the inner tub to flow out through the mesh to the surface of the inner tub. When the inner tub 1 rotates, the water in the inner tub 1 or the water on the surface of the inner tub 1 can be splashed outward in the radial direction.

[0019] In this application, the direction approaching the inner tub 1 is "inner", and the direction away from the outer tub 2 is "outer".

[0020] 1, the air duct connecting pipe according to the present application includes a pipe body 4, a filter screen 3, and a water guide piece 5. The air duct connecting pipe is installed between the dryer 6 and the outer tub 2 as a connecting passage between the dryer 6 and the outer tub 2.

[0021] As shown in Figures 1 and 2, one end of the pipe body 4 is in sealed communication with the housing of the dryer 6, and the other end is in sealed communication with the outer tub 2. As a sealed connection method between the pipe body 4 and the outer tub 2, an opening is provided on the cylindrical surface of the outer tub 2, and the pipe body 4 is in communication with the interior of the outer tub 2 through the opening, and a filtration screen 3 is installed at the connection point between the pipe body 4 and the outer tub 2.

[0022] As shown in Figure 1, the openings and filter screen 3 in the outer tub 2 can only be installed on the cylindrical surface of the outer tub 2, and must not be installed on the end surface of the outer tub 2. The reason for this is that in the present invention, the centrifugal force generated by the high-speed rotation of the inner tub 1 causes water droplets to fly onto the filter screen 3, which can only be washed; generally, the outer tub 2 and the inner tub 1 are installed coaxially, and water droplets can only wash the cylindrical surface of the outer tub 2, and cannot wash the end surface of the outer tub 2.

[0023] As shown in Figure 4, the end of the pipe body 4 close to the outer tub 2 has at least two pipe ports. In this embodiment, the end of the pipe body 4 close to the outer tub 2 has two pipe ports: a water downpipe port and a blow-out pipe port, the blow-out pipe port is covered by a filter screen 3, and the water downpipe port is provided with a water inlet port 7 communicating with an external water source, so that the external water source can enter the water downpipe port through the water inlet port 7.

[0024] As shown in Figures 2 and 3, the water guide piece 5 is attached to the location of the water downpipe mouth, and the edge of the water guide piece 5 and the water downpipe mouth form a long and narrow water outlet 51. Water from the external source enters the water downpipe mouth and flows out of the water outlet 51, forming a water curtain that enters the outer tub 2 and falls onto the surface of the inner tub 1. The water is splashed by the high-speed rotation of the inner tub 1, washing the filter screen 3.

[0025] Preferably, the passage of the water outlet 51 is arc-shaped, with a length of 50 mm to 200 mm and a width of 1 mm to 5 mm. The water flows out of the elongated outlet passage, comes into contact with the inner tub 1 rotating at high speed, and is blown away by centrifugal force, covering the entire filter screen 3, thereby achieving the goal of thoroughly washing the filter screen 3. The longitudinal direction of the water outlet 51 is the axial direction of the outer tub 2 and inner tub 1.

[0026] When water is sprayed directly into the outer tub 2 from a water pipe, only a small portion of the water falls on the surface of the inner tub 1, and when the inner tub 1 rotates, it is not guaranteed that the sprayed water droplets will wash the entire area of ​​the filter net 3. In contrast, the water outlet 51 of the present invention widens the width of the falling water in the axial direction of the inner tub 1, increasing the area covered by the sprayed water and ensuring that the entire area of ​​the filter net 3 will be washed.

[0027] As shown in Figure 3, the water outlet 51 of the present invention may have other shapes, such as a straight or wavy shape, and is not limited to a specific shape as long as it can widen the water flow in the axial direction of the inner tub 1 and form a continuous or discontinuous water curtain. Generally, forming a continuous water curtain allows the water to cover the entire filter net 3. However, considering that water disperses at a small angle due to air resistance when it is sprayed, a discontinuous water curtain can also be formed through a specific design, thereby achieving the technical effect of allowing the water to cover the entire filter net 3. For example, if the water outlet 51 is made up of closely spaced water holes and the intervals between the falling water streams are relatively small, it is possible to achieve the technical effect of allowing the water sprayed by the inner tub 1 to cover the entire filter net 3.

[0028] Those skilled in the art will recognize that the present application is not limited to the details of the above exemplary embodiments, and may implement the present application in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments are illustrative and not limiting. The scope of the present application is determined by the claims, not the above description, and therefore includes all modifications within the scope of the claims and equivalents thereof. Reference signs in the claims should not be construed as limiting the relevant claims.

[0029] Furthermore, although the present specification has been described in terms of embodiments, each embodiment does not necessarily include only one independent technical solution, and such description is merely for the purpose of clarifying the specification. The specification should be understood as a whole, and those skilled in the art should understand that the technical solutions in each example can be appropriately combined to form other embodiments that are understandable to those skilled in the art.

Claims

1. An air duct connection pipe for a drum-type washing machine, The drum-type washing machine includes a dryer (6), an outer tub (2), and an inner tub (1) that is installed in the outer tub (2) and has a mesh. The air duct connection pipe includes a pipe body (4) and a filter net (3), both ends of which are in sealed communication with the housing of the dryer (6) and the cylindrical surface of the outer tub (2), respectively, and the end of the pipe body (4) close to the outer tub (2) has two pipe openings, one of which serves as a water down pipe opening and is connected to an external water source, and the other serves as an outlet pipe opening and is completely covered by the filter net (3), so that when the inner tub (1) rotates at a dehydration rotation speed, water falling from the water down pipe opening onto the surface of the inner tub (1) can be blown off to the filter net (3). An air duct connection pipe for a drum type washing machine.

2. The distance between the filter screen (3) and the inner tub (1) is 30 mm or less, and the spin-drying rotation speed of the inner tub (1) is 500 rpm or more.

2. The air passage connecting pipe for a drum-type washing machine according to claim 1.

3. The water guide piece (5) is installed at the downcomer pipe opening, and the water guide piece (5) and the downcomer pipe opening are identical in shape. The water guide piece (5) and the pipe wall of the downcomer pipe opening are spaced apart to form a long and narrow water outlet (51), and the width of the water outlet (51) is the same as the width of the filter screen (3).

2. The air passage connecting pipe for a drum-type washing machine according to claim 1.

4. The edge of the water guide piece (5), the pipe wall of the water downpipe outlet, and the elongated water outlet (51) are all arc-shaped.

4. The air passage connecting pipe for a drum-type washing machine according to claim 3.

5. The pipe body (4), the filter net (3) and the water guide piece (5) are either separate or integral structures.

4. The air passage connecting pipe for a drum-type washing machine according to claim 3.

6. The air passage connection pipe according to any one of claims 1 to 5 is provided. A washing machine characterized by:

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