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 relates to the technical field of washing machines, and more particularly 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 in 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 drum washing machines is to use a fan to set up a unidirectional air circulating passage inside the machine, and when the drying function is activated, the air at room temperature is circulated by the blowing end of the fan, and the air at room temperature first passes through the heating device to absorb a large amount of heat, then enters the tub to heat the damp clothes and generate a large amount of mixed gas of water vapor and air, which flows in the direction of air circulation to the condenser to release heat, and the water vapor turns into water droplets and is discharged, and the air releases heat and becomes room temperature air, which flows into the intake end of the fan and circulates. After a certain period of time, the water in the clothes is transferred and dried.

[0004] In the conventional drum washing machine, generally, there is no filter device at the tip of the fan, and when drying, the clothes rub against each other, generating many fine fibers, which circulate with the gas in the washing machine and adhere to the surface of the fan impeller, and over time, the amount of fibers adhering to the fan impeller also increases gradually, reducing the fan's air intake efficiency and reducing the air volume and air speed, which causes the heating device to have insufficient air volume for heat dissipation, and the temperature rises too quickly, causing frequent start-stops, greatly reducing the drying efficiency, which in turn causes the washing machine's alarm protection to be activated and the drying function to be disabled, forcing users to wait for a long time for repairs, incurring additional costs, and affecting daily life.

[0005] A washing machine has a removable filter case at the end of the fan, and the filter case must be removed and cleaned every time the drying process is completed. This method is complicated in structure, increases the volume of the machine, and requires a lot of manual cleaning, which impairs the user experience. Summary of the Invention

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

[0007] In order 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 comprising a dryer, an outer tub, and an inner tub installed within 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 sealedly connected to a housing of the dryer and a cylindrical surface of the outer tub, respectively, the end of the pipe body close to the dryer having at least two pipe ports, at least one of which is connected to an external water source as a water drop pipe port, and at least one of which is completely covered by the filter net as an outlet pipe port, the inner tub being capable of scattering water in the inner tub or water dropping onto the surface of the inner tub from the water drop pipe port to the filter net when rotating at a spin-drying rotation speed, and the point of sealed communication between the pipe body and the outer tub being located on the cylindrical surface of the outer tub.

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

[0010] The water outlet is not limited in shape, and the water outlet may have a width that is equal to the width of the filter net so that the water in the water outlet falls onto the surface of the inner tank with a relatively wide falling surface, and the water blown by the inner tank can cover the entire filter net, not just a part of it.

[0011] In a further preferred embodiment of the present application, the edge of the water guide piece, the pipe wall of the water downpipe mouth and the elongated water outlet are all arc-shaped. The length of the arc-shaped water outlet is 50mm-200mm, and the width is 1mm-5mm. The water flows out of the passage of the arc-shaped water outlet and contacts the inner tub rotating at high speed, and is blown away by centrifugal force, after which the water can cover the entire filter net, thereby realizing the purpose of washing the filter net completely.

[0012] Furthermore, the pipe body, the filter screen and the water-guiding piece are each a separate structure or an integral structure.

[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] In the present application, a multi-function air duct connection pipe is installed in the drying system of a conventional washing machine, and a filter device (filter net) that does not need to be removed is installed in it, and the filter net is automatically cleaned by utilizing the centrifugal force of water droplets when water is blown off by the inner tub. Compared with manual cleaning, the present application automatically cleans the filter net during each spin-drying process, and can effectively prevent 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 off too quickly, or when the kinetic energy of the water blowing off the inner tub during the spin-drying function is not sufficient to achieve a cleaning effect, the present application drops water from the water drop pipe into the inner tub, and the water that falls on the surface of the inner tub is blown off to the filter net by the rotation of the inner tub, thereby washing the filter net. [Brief description of the drawings]

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

[0017] Hereinafter, a preferred embodiment of the present application will be described in detail 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 arranged coaxially with the outer tub 2, a dryer 6, and a condenser. A mesh is provided in the wall of the inner tub 1, allowing water in the inner tub to flow out from 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 the "inner" direction, and the direction away from the outer tub 2 is the "outer" direction.

[0020] 1, the air duct connecting pipe according to the present application includes a pipe body 4, a filter net 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 sealed and connected to the housing of the dryer 6, and the other end is sealed and connected to 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, the pipe body 4 is connected to the inside of the outer tub 2 through the opening, and a filtration mesh 3 is installed at the connection point between the pipe body 4 and the outer tub 2.

[0022] 1, the openings and the filter net 3 in the outer tank 2 can only be installed on the cylindrical surface of the outer tank 2, and cannot be installed on the end surface of the outer tank 2. The reason is that in the present invention, the centrifugal force generated by the high-speed rotation of the inner tank 1 can only splash water droplets onto the filter net 3 to wash the filter net 3, whereas generally, the outer tank 2 and the inner tank 1 are installed coaxially, and the water droplets can only wash the cylindrical surface of the outer tank 2, and cannot wash the end surface of the outer tank 2.

[0023] As shown in Fig. 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 down pipe port and a blow-out pipe port, the blow-out pipe port is covered by a filter net 3, and the water down pipe 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 down pipe port from the water inlet port 7.

[0024] As shown in Figures 2 and 3, the water-conducting piece 5 is attached to the water downpipe mouth, and the edge of the water-conducting piece 5 and the water downpipe mouth form a long and narrow water outlet 51. The external water source enters the water downpipe mouth and flows out of the water outlet 51 to form a water curtain, which enters the outer tub 2, then falls onto the surface of the inner tub 1, and the water is splashed by the high-speed rotation of the inner tub 1 to wash the filter net 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, contacts the inner tub 1 rotating at high speed, and is blown away by centrifugal force, after which it can cover the entire filtration net 3, thereby achieving the purpose of washing the entire surface of the filtration net 3. The longitudinal direction of the water outlet 51 is the axial direction of the outer tub 2 and the inner tub 1.

[0026] When a water stream 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 cannot be 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 it can be guaranteed that the entire area of ​​the filter net 3 will be washed.

[0027] As shown in Fig. 3, the water outlet 51 of the present invention may have other shapes such as a straight shape or a wavy shape, and the specific shape is not limited 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, if a continuous water curtain is formed, the splashed water can cover the entire filtration net 3, but considering that the splashed water is dispersed at a small angle due to the influence of air resistance, it is also possible to realize the technical effect of covering the entire filtration net 3 with the splashed water even if a discontinuous water curtain is formed by a specific design. For example, since the water outlet 51 is made up of water outlet holes arranged closely together and the intervals between the falling water streams are relatively small, it is also possible to realize the technical effect of covering the entire filtration net 3 with the water splashed by the inner tub 1.

[0028] For those skilled in the art, the present application is not limited to the matters in the above exemplary embodiments, and the present application may be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, the embodiments are illustrative and non-limiting. The scope of the present application is determined by the claims, not the above description, and includes all modifications within the scope of the claims and the scope equivalent to the claims. The reference signs in the claims should not be considered as limiting the relevant claims.

[0029] In addition, although the present specification has been described in the 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 embodiment 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 passage connection pipe includes a pipe body (4) and a filter net (3), both ends of the pipe body (4) are sealed and communicated with the housing of the dryer (6) and the cylindrical surface of the outer tub (2), respectively, the end of the pipe body (4) close to the dryer (6) has at least two pipe openings, at least one of which is a water down pipe opening that communicates with an external water source, and at least one of which is a blow-out pipe opening that is completely covered by the filter net (3), and when the inner tub (1) rotates at a dehydration rotation speed, the water in the inner tub (1) or water that falls on the surface of the inner tub (1) from the water down pipe opening can be blown off to the filter net (3). An air duct connecting pipe for a drum type washing machine.

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

2. The air duct connection pipe for a drum type washing machine according to claim 1.

3. The water guide piece (5) is installed at the water downpipe mouth, the water guide piece (5) and the water downpipe mouth are in the same shape, the water guide piece (5) and the pipe wall of the water downpipe mouth 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 duct connection pipe for a drum type washing machine according to claim 1.

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

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

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

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

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

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