Door glass flushing device and roller washing machine

Abstract

A door glass flushing device comprises a water inlet valve, a flushing pipeline and a nozzle, the water inlet valve is communicated with the nozzle through the flushing pipeline, the direction from the water inlet valve to the nozzle is defined as the water inlet direction, otherwise, the direction is defined as the backflow direction, and the door glass flushing device further comprises a backflow preventing material box and a one-way valve. The anti-backflow material box is arranged between the water inlet valve and the nozzle and provided with a flushing pipeline communicated with the flushing pipeline, a plurality of sets of non-return pieces are evenly arranged in the flushing pipeline in the backflow direction, and the one-way valve is arranged in the nozzle in the mode that the circulation direction of the one-way valve is the same as the water inlet direction. The one-way valve is arranged in the nozzle to form a first anti-backflow function area, the combined design of the flushing pipeline and the material box is optimized, so that the assembling difficulty and the structural complexity of the whole flushing structure are reduced, and the multiple sets of non-return pieces are arranged in the flushing pipeline to form a second anti-backflow function area; therefore, the whole flushing structure has a dual backflow prevention function.

Description

Technical Field

[0001] The invention relates to the technical field of clothing processing equipment, and in particular to a door glass washing device and a drum washing machine. Background Art

[0002] During the washing process, washing powder foam, thread scraps or other foreign objects may adhere to the door glass of the drum washing machine due to gaps, water flow angle or other reasons. When the door glass is opened to take out clean clothes, not only will the clothes be contaminated again, but the residue attached to the door glass is easy to cause bacteria to grow, affecting healthy life. Therefore, the cleaning function of the washing machine door glass is very important and will directly affect the consumer's satisfaction and experience.

[0003] At present, some drum washing machines have added a door glass flushing structure, which can flush the detergent and foam residue on the door glass during the washing stage, and can flush the residual sewage and foam on the door glass during the rinsing stage. Figure 1 As shown, the door glass washing structure generally adopts a separate water circuit, including a water inlet valve 1, a one-way valve 2 and a nozzle 3. The water inlet valve 1 and the one-way valve 2 are connected by a first pipeline 4, and the one-way valve 2 and the nozzle 3 are connected by a second pipeline 5. Based on factors such as the position and structure of the water inlet valve 1, the second pipeline 5 is usually assembled on the washing machine material box 6, thereby increasing the structural complexity of the washing machine material box 6. During the operation of the whole machine, the second pipeline 5 is very easy to wear. Furthermore, the above multiple structures are all split structures, and the joints are fixed with clamps, which are difficult to assemble and prone to water leakage. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a door glass washing device and a drum washing machine to solve the problems existing in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A door glass washing device includes a water inlet valve, a washing pipeline and a nozzle, wherein the water inlet valve is connected to the nozzle through the washing pipeline, and the direction from the water inlet valve to the nozzle is defined as the water inlet direction, and the opposite direction is defined as the reflux direction. It also includes an anti-backflow box and a one-way valve, wherein the anti-backflow box is arranged between the water inlet valve and the nozzle and has a washing pipeline connected to the washing pipeline, wherein a plurality of groups of check members are evenly arranged in the reflux direction, and the one-way valve is arranged in the nozzle in such a way that its flow direction is in the same direction as the water inlet direction.

[0007] Preferably, the anti-backflow material box includes a material box base, a material box cover and a plurality of material troughs, the material box cover is covered on the top surface of the material box base and the two constitute a material box shell, a plurality of material troughs and a flushing trough are arranged side by side along the water inlet direction in the material box shell, each of the material troughs and the space enclosed by the material box cover constitute a feed channel, each of the feed channels is connected to the water inlet valve through a water inlet pipe, and the flushing trough and the space enclosed by the material box cover constitute the flushing pipe.

[0008] Preferably, the check member includes a pair of reflux blocking blocks staggered along the reflux direction, a gap is provided between the pair of reflux blocking blocks to form a unit flow channel, the unit flow channels in multiple groups of the check members are interconnected to form a main flow channel, and the side surfaces constituting the main flow channel in multiple reflux blocking blocks are arranged parallel to each other along the water inlet direction, a gap is provided between each reflux blocking block and the side wall of the flushing pipe to form a reflux channel, and the reflux channels in multiple check members are evenly arranged along the reflux direction and are all connected to the main flow channel.

[0009] Preferably, the vertical projection of the reflux blocking block on the bottom surface of the flushing groove is wing-shaped, and the reflux channel is divided into a direct current section and an arc section in sequence along the reflux direction. The direct current section of the reflux channel is inclined relative to the main channel, and there is an angle between the direct current sections of the two reflux channels located in the same group of the check pieces, and the arc section of the reflux channel transitions to the main channel through a buffer guide channel.

[0010] Preferably, a reflux hole communicating with the material box base is provided at the bottom of the flushing tank at an end position close to the water inlet valve.

[0011] Preferably, a valve body accommodating cylinder is extended from the connection between the nozzle and the flushing pipe, and the one-way valve is arranged in the valve body accommodating cylinder in such a way that its flow direction is in the same direction as the water inlet direction to form a nozzle-type one-way valve.

[0012] Preferably, the one-way valve includes a valve core and a valve cover, wherein the two ends of the valve core in its flow direction are respectively a water inlet end face and a water outlet end face, and the water inlet end face is placed in the valve body accommodating tube in a manner such that the water inlet end face is close to the anti-backflow box, and the water outlet end face is close to the nozzle. The valve body accommodating tube is also provided with a sealing ring at the position of the water inlet end face of the valve core, and the valve cover movable cover is provided at the water outlet end face of the valve core.

[0013] Preferably, a bendable connecting rod is provided at any position of the water outlet end surface of the valve core and extends along the flow direction of the one-way valve, and the bendable connecting rod is connected to any position of the side of the valve cover, and the valve core, the bendable connecting rod and the valve cover are an integrally formed structure.

[0014] Preferably, the water outlet end surface of the valve core is inclined relative to the water inlet end surface.

[0015] At the same time, the present invention also provides a drum washing machine, comprising a door glass washing device as described in any one of the above items.

[0016] Compared with the prior art, the door glass washing device provided by the present invention has a first anti-backflow functional area formed by arranging a one-way valve in the nozzle, and reduces the assembly difficulty and structural complexity of the entire washing structure by optimizing the design of the combination of the washing pipe and the material box, and evenly arranges multiple groups of check pieces in the washing pipe along the backflow direction to form a second anti-backflow functional area, so that the entire washing structure has a dual anti-backflow function. In the entire washing structure, multiple structural functional parts are integrated to achieve the purpose of reducing parts, improving assembly efficiency, and reducing water leakage hazards. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 It is a structural schematic diagram of a door glass washing structure in the prior art;

[0019] Figure 2 A schematic structural diagram of a door glass washing device provided by the present invention;

[0020] Figure 3 A top view of the anti-backflow box;

[0021] Figure 4 This is an exploded view of the anti-backflow box;

[0022] Figure 5 It is a schematic diagram of the structure of multiple material tanks and flushing tanks;

[0023] Figure 6 It is a schematic diagram of the structure of multiple groups of check pieces;

[0024] Figure 7 It is a structural schematic diagram of the reflux hole;

[0025] Figure 8 It is a structural schematic diagram of a nozzle type one-way valve;

[0026] Fig. 9 It is a structural schematic diagram of the one-way valve in the anti-backflow working state;

[0027] Fig.10 It is a structural schematic diagram of the one-way valve in a normal flow working state;

[0028] Fig.11 It is a structural schematic diagram of a bendable connecting rod;

[0029] Fig.12 It is a schematic diagram of the structure of the sealing ring.

[0030] Reference numerals and component descriptions in the drawings:

[0031] 1. Water inlet valve; 2. One-way valve; 3. Nozzle; 4. First pipeline; 5. Second pipeline; 6. Material box; 7. Flushing pipeline; 8. Anti-backflow material box; 9. Check piece; 10. Valve body accommodating cylinder; 11. Sealing ring; 12. Water inlet pipeline;

[0032] 201, valve core; 202, valve cover; 203, bendable connecting rod; 2011, water inlet end face; 2012, water outlet end face;

[0033] 801, flushing pipeline; 8011, flushing trough; 802, material box base; 803, material box cover; 804, material trough; 805, feeding channel; 806, water inlet pipe; 807, water outlet pipe; 808, reflux hole;

[0034] 901, reflux blocking block; 902, main flow channel; 903, reflux channel; 9031, direct current section; 9032, arc section. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below through specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 2 to Figure 12As shown, a door glass washing device includes a water inlet valve 1 and a nozzle 3, which are the same as the prior art. The water inlet valve 1 and the nozzle 3 are connected through a washing pipeline 7. For the convenience of description, the direction from the water inlet valve 1 to the nozzle 3 is defined as the water inlet direction, and the opposite direction is the reflux direction. In order to solve the problems of high structural complexity, easy wear of the pipeline, great difficulty in assembly, and easy leakage in the prior art, the washing structure provided in this embodiment also includes an anti-backflow box 8 and a one-way valve 2, and the one-way valve 2 is combined with the nozzle 3 to form a nozzle-type one-way valve. The anti-backflow box 8 is arranged between the water inlet valve 1 and the nozzle 3, and an independent washing pipeline 801 is arranged therein to communicate with the washing pipeline 7 to solve the problem of wear caused by the washing pipeline 7 being fixed by a clamp or other structure. At the same time, multiple groups of check members 9 are evenly arranged inside the washing pipeline 801 along the reflux direction, and the washing structure has a dual anti-backflow function by cooperating with the nozzle-type one-way valve.

[0037] The above structure is further described below:

[0038] See also Figure 8 As shown, a valve body accommodating cylinder 10 is extended from the connection between the nozzle 3 and the flushing pipe 7, and the one-way valve 2 is arranged in the valve body accommodating cylinder 10 in such a way that its flow direction is in the same direction as the water inlet direction, thereby forming a nozzle-type one-way valve. Fig. 9 As shown, the one-way valve 2 includes a valve core 201 and a valve cover 202. The two ends of the valve core 201 in the flow direction are respectively an inlet end face 2011 and a water outlet end face 2012. The valve core 201 is built into the valve body accommodating tube 10 in such a way that the inlet end face 2011 is close to the anti-backflow box 8 and the outlet end face 2012 is close to the nozzle 3. The valve cover 202 movable cover is arranged at the outlet end face 2012 of the valve core 201. The outlet end face 2012 of the valve core 201 is inclined relative to the inlet end face 2011 to facilitate the discharge of flushing water. In order to increase the sealing performance of the connection between the valve body accommodating tube 10 and the flushing pipeline 7, the valve body accommodating tube 10 is further provided with a sealing ring 11 at the position of the inlet end face 2011 of the valve core 201. The structure of the sealing ring 11 can be seen in FIG. Fig.12 shown.

[0039] As shown in FIG10 , when the flushing water in the flushing pipeline 7 flows in the water inlet direction, the valve cover 202 opens relative to the water outlet end face 2012 of the valve core 201 . Fig. 9 As shown, when the washing water in the inner drum of the drum washing machine flows toward the valve core 201 along the backflow direction, the valve cover 202 flips up toward the water outlet end surface 2012 of the valve core 201 to prevent the washing water from entering the one-way valve 2. The nozzle-type one-way valve composed of the one-way valve 2 and the nozzle 3 constitutes the first anti-backflow structure of the flushing structure.

[0040] In order to reduce parts and optimize assembly efficiency, a bendable connecting rod 203 is provided at any position of the water outlet end surface 2012 of the valve core 201 along the flow direction of the one-way valve 2. The structure of the bendable connecting rod 203 is shown in FIG. Fig.11 As shown, any position on the side of the valve cover 202 is connected to the bendable connecting rod 203, and the valve core 201, the bendable connecting rod 203 and the valve cover 202 adopt an integrated structural design.

[0041] See also Figure 3 and Figure 4 As shown, the anti-backflow material box provided in this embodiment includes a material box base 802, a material box cover 803 and a plurality of material troughs 804, and the material box cover 803 is covered on the top surface of the material box base 802 to form the material box shell of the anti-backflow material box 8. A plurality of material troughs 804 and a flushing trough 8011 are arranged in the material box shell along the water inlet direction, and the space enclosed by each material trough 804 and the material box cover 803 constitutes a feed channel 805, and each feed channel 805 is connected to the water inlet valve 1 through a water inlet pipeline 12, and the space enclosed by the flushing trough 8011 and the material box cover 803 constitutes the above-mentioned flushing pipeline 801. Different from the existing material box 6, the flushing pipeline 801 and the plurality of feed channels 805 are arranged in parallel in the material box shell, that is, the flushing trough 8011 and the plurality of material troughs 804 can adopt an integrally formed structure, or can adopt a connection method such as clamping and bonding. At the same time, an inlet pipe 806 and an outlet pipe 807 are respectively extended from both ends of the flushing pipe 801 in the water inlet direction. The inlet pipe 806 is connected to the water inlet valve 1 through the flushing pipeline 7, and the outlet pipe 807 is connected to the valve body accommodating cylinder 10 through the flushing pipeline 7, thereby connecting the entire flushing pipeline 801 to the flushing pipeline 7.

[0042] Also, see Figure 7 As shown, the bottom of the flushing tank 8011 is provided with a reflux hole 808 connected to the material box base 802 at the end position near the water inlet valve 1, and the reflux hole 808 is combined with the multiple groups of check pieces 9 in the flushing pipe 801 to form the second anti-backflow structure of the flushing structure. The check pieces 9 and the reflux hole 808 are divided into two parts in the anti-backflow work, and the multiple groups of check pieces 9 play a major blocking role for the backflow washing water that is not cut off by the nozzle-type one-way valve, and the reflux hole 808 serves as the last non-return processing node for the backflow washing water, that is, the backflow washing water that is not cut off by the multiple groups of check pieces 9 is guided to flow back to the material box base 802 and enter the inner drum of the washing machine again, so as to prevent the backflow washing water from flowing back to the flushing pipeline 7 connected to the water inlet valve 1 of the flushing pipe 801 or even to the water inlet valve 1.

[0043] Combination Figure 5 and Figure 6As shown, the check member 9 includes a pair of backflow blocking blocks 901 staggered along the backflow direction, and the vertical projection of each backflow blocking block 901 on the bottom surface of the flushing groove 8011 is wing-shaped. There is a gap between the pair of backflow blocking blocks 901 to form a unit flow channel, and the unit flow channels in multiple groups of check members 9 are interconnected to form a main flow channel 902, and the side surfaces of the main flow channel 902 in the multiple backflow blocking blocks 901 are arranged parallel to each other along the water inlet direction, so that the flushing water flows smoothly along the water inlet direction. There is a gap between each backflow blocking block 901 and the side wall of the flushing pipe 801 to form a backflow channel 903, and the backflow channels 903 in the check member 9 are evenly arranged along the backflow direction and are all connected to the main flow channel 902.

[0044] Furthermore, the return channel 903 is divided into a straight section 9031 and an arc section 9032 in the return direction, and the straight section 9031 of the return channel 903 is inclined relative to the main channel 902, and there is an angle between the straight sections 9031 of the two return channels 903 located in the same group of check members 9. The arc section 9032 of the return channel 903 transitions with the main channel 902 through a buffer guide channel.

[0045] When the water in the flushing pipeline 7 flows into the flushing pipe 801 along the water inlet direction, that is, when the flushing structure is in normal working state, after the flushing water flows into the flushing pipe 801, most of the water flows into the main channel 902, and a small part of the water flows will converge to the main channel 902 under the guidance of the buffer guide channel, so that the flushing water can smoothly flow out of the outlet pipe 807 of the flushing pipe 801, and finally flow out through the nozzle 3 to clean the door glass. Since the flushing water has a high water inlet speed and a large water inlet volume during normal working flushing, even if a small part of the water flows into the material box base 802 when the flushing water flows through the reflux hole 808, it will not affect the overall flushing work.

[0046] When the drum washing machine is in the washing operation, part of the washing water in the inner drum will flow back from the nozzle 3 to the flushing pipeline 7 due to the rotation of the inner drum. When the washing water flows back to the one-way valve 2, the valve cover 202 will be turned up toward the water outlet end surface 2012 of the valve core 201 under the action of the washing water, blocking the washing water from entering the one-way valve 2, thereby achieving the first anti-backflow effect.

[0047] Afterwards, if a small amount of washing water passes through the one-way valve 2 and enters the flushing pipe 801, since a pair of backflow blocking blocks 901 in each set of check pieces 9 in the flushing pipe 801 are staggered along the backflow direction, the washing water flowing in along the backflow direction will be blocked by the backflow blocking blocks 901, and most of the backflow washing water will be diverted to the return channel 903. Each return channel 903 is divided into a straight section 9031 and an arc section 9032 in the return direction. The straight section 9031 of the return channel 903 is tilted relative to the main channel 902, and there is an angle between the straight sections 9031 of the two return channels 903 located in the same set of check pieces 9, so as to further extend the length of the flow path of the return channel 903 and reduce the backflow velocity of the washing water. Then, the washing water flows into the main channel 902 through the arc section 9032 of the return channel 903 and the buffer guide channel. The backflowing washing water is blocked by multiple sets of check pieces 9 and the flow path is extended, so the overall flow velocity is reduced, and the overall amount of water entering the main channel 902 is reduced. The small amount of washing water that converges in the main channel 902 eventually flows into the material box base 802 through the reflux hole 808, and then all the backflowing washing water is cut off in the flushing pipe 801, thereby achieving a second anti-backflow effect.

[0048] This embodiment also provides a drum washing machine, which is used to be equipped with the above-mentioned door glass washing structure.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A door glass washing device, comprising a water inlet valve, a washing pipeline and a nozzle, wherein the water inlet valve and the nozzle are connected through the washing pipeline, and the direction from the water inlet valve to the nozzle is defined as the water inlet direction, and the reverse direction is the return direction, characterized in that: It also includes an anti-backflow box and a one-way valve. The anti-backflow box is arranged between the water inlet valve and the nozzle and has a flushing pipe connected to the flushing pipeline. A plurality of groups of check pieces are evenly arranged in the flushing pipe along the backflow direction. The one-way valve is arranged in the nozzle in such a way that its flow direction is in the same direction as the water inlet direction.

2. A door glass washing device according to claim 1, characterized in that: The anti-backflow material box includes a material box base, a material box cover and multiple material troughs, the material box cover is covered on the top surface of the material box base and the two constitute a material box shell, a plurality of material troughs and a flushing trough are arranged in parallel along the water inlet direction in the material box shell, each of the material troughs and the space enclosed by the material box cover constitutes a feed channel, each of the feed channels is connected to the water inlet valve through a water inlet pipe, and the flushing trough and the space enclosed by the material box cover constitute the flushing pipe.

3. A door glass washing device according to claim 2, characterized in that: The check member includes a pair of backflow blocking blocks staggered along the backflow direction, a gap is provided between the pair of backflow blocking blocks to form a unit flow channel, the unit flow channels in multiple groups of the check members are interconnected to form a main flow channel, and the side surfaces constituting the main flow channel in multiple backflow blocking blocks are arranged parallel to each other along the water inlet direction, a gap is provided between each backflow blocking block and the side wall of the flushing pipe to form a backflow channel, and the backflow channels in multiple check members are evenly arranged along the backflow direction and are all connected to the main flow channel.

4. A door glass washing device according to claim 3, characterized in that: The vertical projection of the reflux blocking block on the bottom surface of the flushing groove is wing-shaped, and the reflux channel is divided into a direct current section and an arc section in sequence along the reflux direction. The direct current section of the reflux channel is inclined relative to the main channel, and there is an angle between the direct current sections of the two reflux channels located in the same group of the check pieces, and the arc section of the reflux channel transitions to the main channel through a buffer guide channel.

5. A door glass washing device according to claim 2, characterized in that: The bottom of the flushing tank is provided with a reflux hole communicated with the material box base at an end position close to the water inlet valve.

6. A door glass washing device according to claim 1, characterized in that: A valve body accommodating cylinder is extended from the connection between the nozzle and the flushing pipe, and the one-way valve is arranged in the valve body accommodating cylinder in a manner that the flow direction thereof is in the same direction as the water inlet direction to form a nozzle-type one-way valve.

7. A door glass washing device according to claim 6, characterized in that: The one-way valve includes a valve core and a valve cover, and the two ends of the valve core in the flow direction are respectively a water inlet end face and a water outlet end face, and the water inlet end face is placed in the valve body accommodating tube in a manner that the water inlet end face is close to the anti-backflow box and the water outlet end face is close to the nozzle. The valve body accommodating tube is also provided with a sealing ring at the position of the water inlet end face of the valve core, and the valve cover movable cover is arranged at the water outlet end face of the valve core.

8. A door glass washing device according to claim 7, characterized in that: A bendable connecting rod is provided at any position of the water outlet end surface of the valve core and extends along the flow direction of the one-way valve. The bendable connecting rod is connected to any position of the side of the valve cover. The valve core, the bendable connecting rod and the valve cover are an integrally formed structure.

9. A door glass washing device according to claim 7, characterized in that: The water outlet end surface of the valve core is inclined relative to the water inlet end surface.

10. A drum washing machine, characterized in that: The invention comprises a door glass washing device as claimed in any one of claims 1 to 9.

Images