Washing machine

Abstract

The washing machine comprises an outer barrel and an inner barrel, the outer barrel is provided with an annular front end cover, a spraying device is arranged on the front end cover of the outer barrel, a spraying nozzle of the spraying device is arranged on the inner circumference of the front end cover of the outer barrel, and the spraying direction faces the barrel opening of the inner barrel; through the arrangement, the spraying nozzle can directly spray washing water mixed with a washing agent to clothes in the inner drum through the drum opening of the inner drum, full contact between the washing agent and the clothes can be completed in the water inlet stage, the washing effect of the clothes is improved, the clothes can be fully soaked in the water inlet stage, and the washing effect of the clothes is improved. The time for fully soaking the clothes is shortened, so that the purposes of efficiently utilizing the detergent and saving water resources are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and in particular relates to a washing machine. Background Art

[0002] Washing machines are common household appliances that convert electrical energy into mechanical energy to wash clothes. For example, in wall-mounted washing machines, water is typically drawn from the rear of the outer drum into the inner drum, where it is sprayed onto the inner drum wall. Specifically, water is drawn into the inner drum by raising the water level in the outer drum and allowing the water to enter through the inner drum hole. This water, when drawn into the inner drum, comes into direct contact with the clothes, resulting in inadequate contact between the detergent in the water and the clothes, and prolonged soaking time for the clothes.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a washing machine. A spray device is provided on the front end cover of the outer drum, with the spray nozzle of the spray device spraying in a direction toward the inner drum opening, so that the spray nozzle can directly spray washing water mixed with detergent through the inner drum opening onto the clothes in the inner drum. This can achieve full contact between the detergent and the clothes during the water intake stage, thereby improving the washing effect of the clothes. Furthermore, the clothes can be fully soaked during the water intake stage, shortening the time it takes for the clothes to be fully soaked, thereby achieving the goals of efficiently utilizing detergent and saving water resources.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] The present invention provides a washing machine, comprising an outer drum and an inner drum. The outer drum has an annular front end cover. A spray device is provided on the front end cover of the outer drum. The spray device has a spray nozzle arranged on the inner periphery of the front end cover of the outer drum, and the spray direction is toward the drum opening of the inner drum.

[0007] Furthermore, the spray device has a radially extending spray water inlet channel, the water outlet of the spray water inlet channel penetrates from the outer periphery of the front end cover of the outer cylinder into the inner periphery of the front end cover of the outer cylinder, and the spray nozzle is arranged at the water outlet of the spray water inlet channel.

[0008] Furthermore, a first flow limiting portion and a second flow limiting portion are convexly provided on the end face of the water outlet of the spray water inlet channel, which are opposite and spaced apart. The flow limiting surface of the first flow limiting portion faces the inner tube opening, and the flow limiting surface of the second flow limiting portion faces away from the inner tube opening. The two flow limiting portions form a spray nozzle.

[0009] Furthermore, the first flow limiting portion and the second flow limiting portion are square plate structures, the first dimension of the first flow limiting portion gradually decreases along its own protruding direction, the second dimension of the second flow limiting portion remains unchanged along its own protruding direction, the first dimension is larger than the second dimension, and the second flow limiting portion is opposite to the middle of the first flow limiting portion.

[0010] Furthermore, the first flow limiting portion has a first flow limiting section formed by a radial protrusion of the end face of the water outlet of the spray water inlet channel and a second flow limiting section formed by bending the free end of the first flow limiting section toward the inner tube mouth. The second flow limiting section gradually inclines toward the inner tube mouth relative to the first flow limiting section as a first guide portion that directs the spraying direction of the spray nozzle toward the inner tube mouth.

[0011] Furthermore, the second flow limiting section extends from a position facing the outer peripheral area of ​​the inner cylinder opening to a position facing the inner peripheral area of ​​the inner cylinder opening, and the projection of the spray water inlet channel along its own axis partially overlaps with the second flow limiting section.

[0012] Furthermore, a guide groove is provided in the middle of the first flow limiting section, which is recessed away from the second flow limiting portion and connected to the water outlet of the spray water inlet channel. The bottom of the guide groove extends obliquely from the water outlet of the spray water inlet channel to the second flow limiting section as a second flow limiting portion. The inclination of the bottom of the guide groove is the same as that of the second flow limiting section, and the bottom of the guide groove faces the second flow limiting portion.

[0013] Furthermore, the second flow limiting portion has a third flow limiting section formed by the radial protrusion of the end face of the water outlet of the spray water inlet channel and a fourth flow limiting section formed by the free end of the third flow limiting section bending toward the first flow limiting portion. The fourth flow limiting section gradually inclines toward the first flow limiting portion relative to the third flow limiting section and serves as a third flow guiding portion for guiding flow to the second flow limiting section.

[0014] Furthermore, the fourth flow limiting section protrudes beyond the first flow limiting section but not beyond the second flow limiting section. The radial projection of the fourth flow limiting section on the front end cover of the outer cylinder does not overlap with the second flow limiting section. The free end of the fourth flow limiting section is opposite to the outer peripheral area of ​​the inner cylinder mouth.

[0015] Furthermore, the front end surface of the front end cover of the outer cylinder is provided with an annular protrusion axially protruding around the opening of the front end cover of the outer cylinder. The annular protrusion is stepped, and the radial dimension of the front step of the annular protrusion is smaller than the radial dimension of the rear step. The inner peripheral wall of the front step protrudes to form a protrusion, and the water outlet end of the spray water inlet channel is formed on the first part of the protrusion, and the second part of the protrusion forms a first flow limiting portion.

[0016] Preferably, a connecting wall is provided between the front step and the rear step of the annular protrusion, and the spray water inlet channel is formed on the area formed by the front step, the rear step and the connecting wall.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0018] By arranging a spray device on the front end cover of the outer drum, the spray nozzle of the spray device sprays in a direction toward the drum opening of the inner drum, so that the spray nozzle can directly spray the washing water mixed with detergent onto the clothes in the inner drum through the drum opening of the inner drum, so that the detergent and the clothes can be fully contacted in the water intake stage, thereby improving the washing effect of the clothes, and can fully soak the clothes in the water intake stage, shortening the time for fully soaking the clothes, thereby achieving the purpose of efficiently utilizing detergent and saving water resources.

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0021] Figure 1 1 is a schematic structural diagram of a washing machine provided by an embodiment of the present invention;

[0022] Figure 2 is a left side view of a washing machine provided by an embodiment of the present invention;

[0023] Figure 3 yes Figure 2 AA cross-section of

[0024] Figure 4 yes Figure 3 Enlarged view at point A;

[0025] Figure 5 2. It is a front side schematic diagram of the front end cover of the outer cylinder provided by an embodiment of the present invention;

[0026] Figure 6 yes Figure 5 Enlarged view at point B;

[0027] Figure 7 1 is a schematic diagram of the rear side of the front end cover of the outer cylinder provided by an embodiment of the present invention;

[0028] Figure 8 yes Figure 7 Enlarged view at point C;

[0029] Figure 9 It is a schematic diagram of spraying by a spray nozzle provided in an embodiment of the present invention.

[0030] Icons: 1-outer cylinder; 11-front end cover of outer cylinder; 111-annular convex portion; 111a-front step; 111b-rear step; 111c-connecting wall; 112-raised portion; 2-inner cylinder; 21-inner cylinder mouth; 3-spraying device; 31-spraying nozzle; 311-first flow limiting portion; 311a-first flow limiting section; 311b-second flow limiting section; 311c-first flow guide portion; 311d-flow guide groove; 311e-second flow guide portion; 312-second flow limiting portion; 312a-third flow limiting section; 312b-fourth flow limiting section; 312c-third flow guide portion; 32-spray water inlet channel; 4-first reinforcing rib; 5-second reinforcing rib; 6-window pad; 61-plug-in groove.

[0031] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0035] like Figure 1-8 As shown, the present invention provides a washing machine, comprising an outer drum 1 and an inner drum 2, the outer drum 1 having an annular front end cover, a spray device 3 being provided on the outer drum front end cover 11, and a spray nozzle 31 of the spray device 3 being provided on the inner periphery of the outer drum front end cover 11, and the spraying direction being toward the inner drum opening 21.

[0036] In the embodiment of the present invention, a spray device 3 is provided on the front end cover 11 of the outer drum, and the spraying direction of the spray nozzle 31 of the spray device 3 is toward the inner drum opening 21, so that the spray nozzle 31 can directly spray the washing water mixed with detergent through the inner drum opening 21 onto the clothes in the inner drum 2, so that the detergent and the clothes can be fully contacted during the water intake stage, thereby improving the washing effect of the clothes, and can fully soak the clothes during the water intake stage, shortening the time for the clothes to be fully soaked, thereby achieving the purpose of efficiently utilizing detergent and saving water resources.

[0037] The washing machine can be a wall-mounted drum washing machine; the outer drum front end cover 11 is annular, with an opening in the middle of the outer drum front end cover 11, and the opening of the outer drum front end cover 11 is coaxially arranged with the inner drum opening 21. The user can put clothes into the inner drum 2 through the opening of the outer drum front end cover 11, and the spray nozzle 31 on the inner periphery of the outer drum front end cover 11 sprays into the inner drum 2 through the inner drum opening 21.

[0038] Furthermore, the washing machine further comprises a machine door and a ring-shaped window gasket 6 , which is coaxially arranged with the outer drum front end cover 11 , and is arranged between the machine door and the outer drum front end cover 11 .

[0039] In an embodiment of the present invention, the spray device 3 has a radially extending spray water inlet channel 32, the water outlet end of the spray water inlet channel 32 penetrates from the outer periphery of the front end cover 11 of the outer cylinder into the inner periphery of the front end cover 11 of the outer cylinder, and the spray nozzle 31 is arranged at the water outlet end of the spray water inlet channel 32.

[0040] In the embodiment of the present invention, the water inlet end of the spray water inlet channel 32 is located in the outer peripheral area of ​​the outer drum front end cover 11, and the water outlet end of the spray water inlet channel 32 is located in the inner peripheral area of ​​the outer drum front end cover 11. The water inlet end of the spray water inlet channel 32 is connected to a water source outside the washing machine via a pipeline, or the water inlet end of the spray water inlet channel 32 is connected to the outer drum 1 via a pipeline, and the outer drum 1 is a water storage drum.

[0041] The radial direction involved in this application is the radial direction of the front end cover 11 of the outer cylinder or the radial direction of the outer cylinder 1. The radial extension of the spray water inlet channel 32 can reduce the obstruction to the flow of washing water carrying detergent. Preferably, the spray water inlet channel 32 of this application extends radially from top to bottom, which can enable the washing water carrying detergent to reach the spray nozzle 31 by gravity, accelerate the washing water to reach the spray nozzle 31, and reduce the detergent residue on the inner wall of the spray water inlet channel 32.

[0042] During spraying, the spray water inlet channel 32 delivers the washing water to the spray nozzle 31 , and the spray nozzle 31 sprays the clothes in the inner drum 2 through the inner drum opening 21 .

[0043] In an embodiment of the present invention, a first flow limiting portion 311 and a second flow limiting portion 312 are convexly provided on the end surface of the water outlet of the spray water inlet channel 32, which are opposite and spaced apart. The flow limiting surface of the first flow limiting portion 311 faces the inner tube mouth 21, and the flow limiting surface of the second flow limiting portion 312 faces away from the inner tube mouth 21. The two flow limiting portions form a spray nozzle 31.

[0044] In the embodiment of the present invention, the axial cross-section of the spray water inlet channel 32 is circular, and the first flow restrictor 311 and the second flow restrictor 312 are distributed along the circumference of the spray water inlet channel 32. The first flow restrictor 311 and the second flow restrictor 312 are opposite to each other and spaced apart, so that there is a first spacing and a second spacing between the first flow restrictor 311 and the second flow restrictor 312. The first spacing, the first flow restrictor 311, the second spacing, and the second flow restrictor 312 are distributed along the circumference of the spray water inlet channel 32. The first spacing forms a first nozzle, and the second spacing forms a second nozzle. The first nozzle and the second nozzle are symmetrically arranged with the first flow restrictor 311 and the second flow restrictor 312 as the center.

[0045] Taking the spray water inlet channel 32 extending up and down as an example, the first flow restriction portion 311 and the second flow restriction portion 312 are distributed front to back, and the first nozzle and the second nozzle are on the left and right sides of the first flow restriction portion 311 and the second flow restriction portion 312, so that the spray nozzle 31 can spray from the third nozzle formed by the first nozzle, the second nozzle, and the bottom of the first flow restriction portion 311 and the second flow restriction portion 312 when spraying. The first nozzle and the second nozzle enable the spray nozzle 31 to spray left and right, and the third nozzle enables the spray nozzle 31 to spray downward, thereby widening the spraying area of ​​the spray nozzle 31. Figure 9 The spraying effect of the spray nozzle 31 is shown, and several dotted lines represent the spraying paths.

[0046] The limiting surface of the first limiting part 311 and the limiting surface of the second limiting part 312 are surfaces in contact with the washing water. The limiting surface of the first limiting part 311 faces the inner drum opening 21, and the limiting inner surface of the second limiting part 312 faces away from the inner drum opening 21, so that the washing water sprayed by the spray nozzle 31 can reach the inner drum opening 21.

[0047] Furthermore, the first flow restrictor 311 and the second flow restrictor 312 are square plate-shaped structures. The first dimension of the first flow restrictor 311 gradually decreases along its protruding direction, while the second dimension of the second flow restrictor 312 remains unchanged along its protruding direction. The first dimension is greater than the second dimension, and the second flow restrictor 312 is directly opposite the center of the first flow restrictor 311. It should be noted that the ratio of the maximum value of the first dimension to the second dimension ranges from 3:1 to 4:1, and the ratio of the minimum value of the first dimension to the second dimension ranges from approximately 1.5:1 to 2:1. In actual applications, the maximum value of the first dimension is 20 mm, the minimum value of the first dimension is 10 mm, and the second dimension is 6 mm.

[0048] Taking the up and down extension of the spray water inlet channel 32 as an example, the first dimension is the dimension of the first flow restricting part 311 in the left and right directions, and the second dimension is the dimension of the second flow restricting part 312 in the left and right directions. The dimension of the first flow restricting part 311 in the left and right directions is larger than the dimension of the second flow restricting part 312 in the left and right directions. The first flow restricting part 311 with a larger left and right dimension can provide a retention area for the washing water sprayed from the first nozzle and the second nozzle, so that the washing water can be collected, preventing the washing water from splashing in the left and right directions and failing to accurately enter the inner drum 2 through the inner drum mouth 21.

[0049] Specifically, the first flow limiting portion 311 has a first flow limiting section 311a formed by a radial protrusion of the end face of the water outlet of the spray water inlet channel 32 and a second flow limiting section 311b formed by bending the free end of the first flow limiting section 311a toward the inner tube mouth 21. The second flow limiting section 311b is gradually inclined toward the inner tube mouth 21 relative to the first flow limiting section 311a as a first guide portion 31c that directs the spraying direction of the spray nozzle 31 toward the inner tube mouth 21.

[0050] Taking the spray water inlet channel 32 extending up and down as an example, the first flow limiting section 311a extends up and down, and the second flow limiting section 311b gradually tilts from top to bottom toward the inner tube opening 21 as the first flow guide portion 31c, so that the spray nozzle 31 sprays toward the inner tube opening 21, and thus sprays into the inner tube 2;

[0051] The second flow-restricting section 311b extends from a position directly opposite the outer circumference of the inner drum opening 21 to a position directly opposite the inner circumference of the inner drum opening 21. The axial projection of the spray water inlet channel 32 partially overlaps with the second flow-restricting section 311b. This arrangement allows wash water sprayed from the first and second nozzles to directly reach the second flow-restricting section 311b, or first reach the first flow-restricting section 311a and then reach the second flow-restricting section 311b from the first flow-restricting section 311a, where it is then directed to the inner drum opening 21. Furthermore, wash water sprayed from the third nozzle directly reaches the second flow-restricting section 311b and is then directed to the inner drum opening 21 from the second flow-restricting section 311b.

[0052] The first flow-limiting section 311 a and the second flow-limiting section 311 b are specifically in the shape of an inverted trapezoid, so that the wash water reaching the second flow-limiting section 311 b diverges in the left-right direction.

[0053] More specifically, a guide groove 311d is provided in the middle of the first flow limiting section 311a, which is recessed away from the second flow limiting portion 312 and connected to the water outlet of the spray water inlet channel 32. The bottom of the guide groove 311d extends obliquely from the water outlet of the spray water inlet channel 32 to the second flow limiting section 311b as the second guide portion 311e. The inclination of the bottom of the guide groove 311d is the same as that of the second flow limiting section 311b, and the bottom of the guide groove 311d is directly opposite the second flow limiting portion 312.

[0054] The guide groove 311d guides the general washing water to the third nozzle, and the washing water directly reaches the second flow limiting section 311b from the third nozzle, which can prevent the washing water from splashing everywhere and make the washing water reach the second flow limiting section 311b quickly and accurately. The second size of the second flow limiting part 312 is basically equal to the size of the guide groove 311d. If the size of the second flow limiting part 312 is too large, it will restrict the washing water from being sprayed out from the first nozzle and the second nozzle. If the size of the second flow limiting part 312 is too small, part of the washing water will not fall on the second flow limiting section 311b.

[0055] In an embodiment of the present invention, the second flow limiting portion 312 has a third flow limiting section 312a formed by a radial protrusion of the end face of the water outlet of the spray water inlet channel 32 and a fourth flow limiting section 312b formed by bending the free end of the third flow limiting section 312a toward the first flow limiting portion 311. The fourth flow limiting section 312b gradually tilts toward the first flow limiting portion 311 relative to the third flow limiting section 312a to serve as a third guide section 312c for guiding flow to the second flow limiting section 311b.

[0056] In the embodiment of the present invention, the fourth flow-restricting section 312b can guide the washing water to the second flow-restricting section 311b, so that the washing water is guided from the second flow-restricting section 311b to the inner drum opening 21, thereby preventing some washing water from falling directly and failing to reach the second flow-restricting section 311b.

[0057] Specifically, the fourth flow limiting section 312b protrudes beyond the first flow limiting section 311a and does not exceed the second flow limiting section 311b. The radial projection of the fourth flow limiting section 312b on the front end cover 11 of the outer cylinder does not overlap with the second flow limiting section 311b. The free end of the fourth flow limiting section 312b is opposite to the outer peripheral area of ​​the inner cylinder mouth 21. Through the above arrangement, the fourth flow limiting section 312b can accurately guide the washing water to the second flow limiting section 311b, preventing the fourth flow limiting section 312b from affecting the guidance of the washing water by the second flow limiting section 311b.

[0058] In an embodiment of the present invention, the front end surface of the outer cylinder front end cover 11 is provided with an annular protrusion 111 axially protruding around the opening of the outer cylinder front end cover 11. The annular protrusion 111 is stepped, and the radial dimension of the front step 111a of the annular protrusion 111 is smaller than the radial dimension of the rear step 111b. The inner peripheral wall of the front step 111a protrudes to form a protrusion 112. The water outlet end of the spray water inlet channel 32 is formed on the first part of the protrusion 112, and the second part of the protrusion 112 forms a first flow limiting portion 311.

[0059] In the embodiment of the present invention, the axial direction referred to herein is the axial direction of the outer cylinder front end cover 11 or the axial direction of the outer cylinder 1. The annular protrusion 111 is coaxially arranged with the outer cylinder front end cover 11. The rear step 111b is on the outer periphery of the front step 111a. The rear step 111b protrudes forward relative to the front end surface of the outer cylinder front end cover 11. The rear step 111b can serve as the first reinforcing rib 4 to increase the structural strength of the outer cylinder front end cover 11.

[0060] The water outlet end of the spray water inlet channel 32 and the first flow restrictor 311 share the raised portion 112, thereby integrating the spray water inlet channel 32 and the first flow restrictor 311 together, thereby improving the compactness of the structure.

[0061] like Figure 8 As shown, specifically, the raised portion 112 is divided into a first section and a second section, and the water outlet end of the spray water inlet channel 32 and the first flow limiting section 311a are formed on the first section. Specifically, the water outlet end of the spray water inlet channel 32 is formed in the middle of the first section, and the water outlet end of the spray water inlet channel 32 is above the first flow limiting section 311a. The second flow limiting section 311b is formed on the second section. The size of the raised portion 112 gradually decreases along its own convex direction. The left and right side surfaces of the first section are respectively the first arc surface, and the left and right side surfaces of the second section are respectively the second arc surface. The first arc surface protrudes toward the middle of the first section, and the second arc surface protrudes away from the middle of the second section.

[0062] A connecting wall 111c is provided between the front step 111a and the rear step 111b of the annular protrusion 111. The connecting wall 111c extends radially along the front end cover of the outer cylinder. The spray water inlet channel 32 is formed in the area formed by the front step 111a, the rear step 111b, and the connecting wall 111c. The spray water inlet channel 32 spans the front step 111a, the rear step 111b, and the connecting wall 111c in its own radial direction, thereby enhancing the strength of the spray water inlet channel 32 and thereby increasing the stability of the spray water inlet channel 32 on the front end cover 11 of the outer cylinder.

[0063] In addition, a second reinforcing rib 5 is provided on the outer periphery of the spray water inlet channel 32 , and the second reinforcing rib 5 is respectively connected to the rear step 111 b and the outer cylinder front end cover 11 , further increasing the stability of the spray water inlet channel 32 on the outer cylinder front end cover 11 .

[0064] like Figure 3 and Figure 4 As shown, the window gasket 6 includes a ring-shaped window gasket body, which is provided with a plug-in slot 61 with a notch facing the front end cover of the outer tube, and the front step 111a is inserted into the plug-in slot 61 and abuts against the corresponding side surfaces in the plug-in slot 61;

[0065] The rear end surface of the window gasket body abuts against the raised portion 112. Specifically, the rear end surface of the window gasket body abuts against the water outlet end of the spray water inlet channel 32 and the first flow limiting section 311a, thereby achieving assembly between the window gasket body and the front end cover 11 of the outer tube and increasing the stability of the window gasket body on the outer tube 1.

[0066] The inner peripheral wall of the window gasket body is provided with a sealing rib, which abuts against the outer periphery of the door when the door is closed, thereby increasing the sealing performance between the window gasket 6 and the door.

[0067] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A washing machine comprising an outer drum and an inner drum, wherein the outer drum has an annular front end cover, characterized in that: A spray device is provided on the front end cover of the outer cylinder. The spray nozzle of the spray device is provided on the inner periphery of the front end cover of the outer cylinder, and the spray direction is toward the cylinder mouth of the inner cylinder.

2. The washing machine according to claim 1, wherein The spray device has a radially extending spray water inlet channel, the water outlet of the spray water inlet channel penetrates the inner periphery of the front end cover of the outer cylinder from the outer periphery of the front end cover of the outer cylinder, and the spray nozzle is arranged at the water outlet end of the spray water inlet channel.

3. The washing machine according to claim 2, characterized in that A first flow limiting part and a second flow limiting part are provided on the end surface of the water outlet of the spray water inlet channel, which are opposite and spaced apart. The flow limiting surface of the first flow limiting part faces the inner tube opening, and the flow limiting surface of the second flow limiting part faces away from the inner tube opening. The two flow limiting parts form a spray nozzle.

4. The washing machine according to claim 3, characterized in that The first flow limiting portion and the second flow limiting portion are square plate structures. The first dimension of the first flow limiting portion gradually decreases along its own protruding direction, and the second dimension of the second flow limiting portion remains unchanged along its own protruding direction. The first dimension is larger than the second dimension, and the second flow limiting portion is opposite to the middle of the first flow limiting portion.

5. The washing machine according to claim 4, characterized in that The first flow limiting portion includes a first flow limiting section formed by a radial protrusion of the end face of the water outlet of the spray water inlet channel and a second flow limiting section formed by bending the free end of the first flow limiting section toward the inner tube opening. The second flow limiting section gradually inclines toward the inner tube opening relative to the first flow limiting section and serves as a first flow guide portion that directs the spraying direction of the spray nozzle toward the inner tube opening.

6. The washing machine according to claim 5, characterized in that The second flow limiting section extends from a position facing the outer peripheral area of ​​the inner cylinder opening to a position facing the inner peripheral area of ​​the inner cylinder opening, and the projection of the spray water inlet channel along its own axis partially overlaps with the second flow limiting section.

7. The washing machine according to claim 5, characterized in that A guide groove is provided in the middle of the first flow limiting section, which is recessed away from the second flow limiting part and connected to the water outlet of the spray water inlet channel. The bottom of the guide groove extends obliquely from the water outlet of the spray water inlet channel to the second flow limiting section as the second flow limiting part. The inclination degree of the bottom of the guide groove is the same as that of the second flow limiting section, and the bottom of the guide groove faces the second flow limiting part.

8. The washing machine according to any one of claims 1 to 7, characterized in that: The second flow limiting part has a third flow limiting section formed by the radial protrusion of the end face of the water outlet of the spray water inlet channel and a fourth flow limiting section formed by the free end of the third flow limiting section bending toward the first flow limiting part. The fourth flow limiting section gradually inclines toward the first flow limiting part relative to the third flow limiting section and serves as a third flow guiding part for guiding flow to the second flow limiting section.

9. The washing machine according to claim 8, characterized in that The fourth flow limiting section protrudes beyond the first flow limiting section but does not exceed the second flow limiting section. The radial projection of the fourth flow limiting section on the front end cover of the outer cylinder does not overlap with the second flow limiting section. The free end of the fourth flow limiting section is opposite to the outer peripheral area of ​​the inner cylinder mouth.

10. The washing machine according to any one of claims 1 to 9, characterized in that: The front end surface of the front end cover of the outer cylinder is provided with an annular protrusion axially protruding around the opening of the front end cover of the outer cylinder. The annular protrusion is stepped, and the radial dimension of the front step of the annular protrusion is smaller than the radial dimension of the rear step. The inner peripheral wall of the front step protrudes to form a protrusion, and the water outlet end of the spray water inlet channel is formed on the first part of the protrusion, and the second part of the protrusion forms a first flow limiting portion. Preferably, a connecting wall is provided between the front step and the rear step of the annular protrusion, and the spray water inlet channel is formed on the area formed by the front step, the rear step and the connecting wall.

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