Washing machine

Abstract

The utility model discloses a washing machine, which belongs to the technical field of laundry equipment, and comprises a machine body, a roller provided with a cleaning cavity and mounted on the machine body, a liquid storage box provided with a liquid storage cavity, a pump body mounted on the machine body, a first liquid supply pipe, a second liquid supply pipe and an ultrasonic sensor mounted on the machine body, the liquid storage box is installed on the machine body, one end of the first liquid supply pipe is communicated with the liquid storage cavity, the other end of the first liquid supply pipe is communicated with the pump body, one end of the second liquid supply pipe is communicated with the pump body, the other end of the second liquid supply pipe is communicated with the cleaning cavity, and the cleaning cavity is communicated with the pump body. The ultrasonic sensor is provided with a transmitting end and a receiving end; the first liquid supply pipe is located between the transmitting end and the receiving end. The washing machine can improve the accuracy of laundry detergent detection.

Description

Technical Field

[0001] The utility model relates to the technical field of laundry equipment, in particular to a washing machine. Background Art

[0002] A washing machine is a cleaning appliance that uses electrical energy to generate mechanical action to wash clothes. Mechanical force, detergent, and water are the three elements in the washing process of a washing machine. Most washing machines on the market need to manually add detergent every time they are used. Therefore, some washing machines with built-in liquid storage boxes have appeared. By adding detergent to the liquid storage box, detergent can be automatically added, avoiding the trouble of manually adding detergent every time washing. When detecting the capacity of the detergent in the liquid storage box, the existing washing machine generally sets an intermediate compartment connected to the liquid storage box, and buries a probe in the internal intermediate compartment to sense whether the detergent has been used up. The principle of the probe is that the detergent makes the two probes connected to give a signal. When there is no detergent, the two probes have no connection signal, and this is used to determine whether there is detergent in the intermediate compartment. Although the detergent can connect the two probes, the detergent flows slowly, and the probes cannot be connected when the intermediate compartment is not full, which will also cause false perception. When the probe is powered on, ionization corrosion occurs in the strong acid and alkali environment of the detergent, which will cause inaccurate or undetectable detection results over time. Utility Model Content

[0003] The purpose of the embodiment of the utility model is to provide a washing machine, which can improve the accuracy of laundry detergent detection.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A washing machine, comprising:

[0006] Body;

[0007] A drum having a cleaning chamber and mounted on the machine body;

[0008] A liquid storage box having a liquid storage cavity; the liquid storage box is installed on the machine body;

[0009] A pump body, mounted on the machine body;

[0010] A first liquid supply pipe; one end of the first liquid supply pipe is connected to the liquid storage chamber, and the other end of the first liquid supply pipe is connected to the pump body;

[0011] a second liquid supply pipe; one end of the second liquid supply pipe is connected to the pump body, and the other end of the second liquid supply pipe is connected to the cleaning chamber;

[0012] as well as

[0013] An ultrasonic sensor is installed on the machine body; the ultrasonic sensor has a transmitting end and a receiving end; the first liquid supply pipe is located between the transmitting end and the receiving end.

[0014] Optionally, the washing machine further includes a third liquid supply pipe; one end of the third liquid supply pipe is connected to the cleaning chamber, and the other end of the third liquid supply pipe is used to connect to an external water source.

[0015] Optionally, the washing machine further includes a pipe joint and a mixing tube; the second liquid supply pipe and the third liquid supply pipe are both connected to one end of the mixing tube through the pipe joint, and the other end of the mixing tube is connected to the cleaning chamber.

[0016] Optionally, the washing machine further includes an anti-backflow joint; the second liquid supply pipe is connected to the pipe joint via the anti-backflow joint.

[0017] Optionally, the anti-backflow joint includes a tube body and a movable seat; the tube body has a liquid flow channel, a liquid inlet channel, and a liquid outlet channel; the liquid inlet channel has a first liquid port connected to the liquid flow channel and a second liquid port connected to the second liquid supply pipe, and the liquid outlet channel has a third liquid port connected to the liquid flow channel and a fourth liquid port connected to the pipe joint; the movable seat is rotatably installed in the liquid flow channel along a direction approaching or moving away from the first liquid port, and the movable seat switches between a sealing position and a conducting position; when the movable seat is located at the sealing position, the movable seat blocks the first liquid port of the liquid inlet channel; when the movable seat is located at the conducting position, the movable seat opens the first liquid port of the liquid inlet channel.

[0018] Optionally, the movable seat is in a hemispherical shape, and has a hemispherical surface and an end surface of the first liquid port for blocking the liquid inlet channel.

[0019] Optionally, a groove is provided on the end surface of the movable seat, and a positioning tube is provided in the liquid flow channel. The positioning tube has a fifth liquid port connected to the liquid inlet channel. When the movable seat is located in the sealing position, the movable seat is sleeved on the positioning tube through the groove and blocks the fifth liquid port.

[0020] Optionally, the washing machine also includes a first guide column, a second guide column, a first spring sleeved on the first guide column, a second spring sleeved on the second guide column, and a pressure plate; the liquid storage chamber has a first inner wall, one end of the pressure plate is slidably disposed on the first guide column, and the other end of the pressure plate is slidably disposed on the second guide column, a clamping channel is formed between the pressure plate and the first inner wall, and the first spring and the second spring use elastic force to make the pressure plate abut against the first inner wall.

[0021] Optionally, an extrusion strip is provided on the pressing plate, and the extrusion strip is located in the clamping channel.

[0022] Optionally, there are multiple first guide pillars and multiple second guide pillars, and the multiple first guide pillars are arranged in sequence from top to bottom along the first inclined straight line trajectory, and the multiple second guide pillars are arranged in sequence from top to bottom along the second inclined straight line trajectory.

[0023] The beneficial effects of the utility model are:

[0024] The washing machine of the utility model does not need to be provided with an intermediate compartment, and the structure of the washing machine is simplified. The washing machine of the utility model detects whether there is laundry liquid in the first liquid supply pipe by providing an ultrasonic sensor, so as to determine whether there is still laundry liquid in the liquid storage box. The washing machine uses ultrasonic conduction of the ultrasonic sensor to detect the laundry liquid, and does not need to provide a probe to be inserted into the first liquid supply pipe. At the same time, the ultrasonic sensor can also identify whether there is laundry liquid or bubbles in the first liquid supply pipe, thereby avoiding misperception, and the laundry liquid detection has high accuracy and small error. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described in detail below based on the drawings and embodiments.

[0026] Figure 1 The schematic diagram of the structure of the washing machine is shown in FIG. 2 , in which the drum and part of the body are omitted;

[0027] Figure 2 It is a structural schematic diagram of an ultrasonic sensor;

[0028] Figure 3 It is a schematic diagram of the structure of the anti-backflow valve;

[0029] Figure 4 It is a structural schematic diagram of a liquid storage box and a pressure plate;

[0030] Figure 5 for Figure 4 A cross-sectional view of

[0031] Figure 6 for Figure 4 Top view of the .

[0032] Description of the accompanying drawings:

[0033] 11. Machine body; 12. Liquid storage box; 13. Pump body; 14. First liquid supply pipe; 15. Second liquid supply pipe; 16. Third liquid supply pipe; 17. Mixing pipe; 18. Ultrasonic sensor; 19. Pipeline joint; 20. Anti-backflow joint; 21. First guide column; 22. Second guide column; 23. First spring; 24. Second spring; 25. Press plate; 26. Clamping channel; 27. First inclined linear track; 28. Second inclined linear track; 29. ​​Extrusion strip; 30. Lotion bag;

[0034] 121, liquid storage cavity; 122, first inner wall; 123, first bottom wall; 124, liquid collecting groove; 125, second bottom wall; 126, liquid drop hole;

[0035] 181, transmitting end; 182, receiving end; 183, detection position;

[0036] 201, tube body; 202, movable seat; 203, liquid flow channel; 204, liquid inlet channel; 205, liquid outlet channel; 206, positioning tube;

[0037] 2021, groove; 2041, first liquid port; 2042, second liquid port; 2051, third liquid port; 2052, fourth liquid port; 2061, fifth liquid port;

[0038] 301. Bag opening. DETAILED DESCRIPTION

[0039] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "fixed", "connected", "communicated", "abutted", "clamped" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0044] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0045] Unless specifically stated or defined otherwise, the term “and / or” used in the present invention includes any and all combinations of one or more of the associated listed items.

[0046] For the convenience of description, unless otherwise specified, the up and down directions mentioned below are the same as Figure 3 , Figure 5 The up and down directions are consistent with the left and right directions mentioned below. Figure 5 The left and right directions are consistent.

[0047] like Figures 1 to 6As shown, a washing machine comprises a body 11, a drum having a cleaning cavity and mounted on the body 11, a liquid storage box 12 having a liquid storage cavity 121, a pump body 13 mounted on the body 11, a first liquid supply pipe 14, a second liquid supply pipe 15, and an ultrasonic sensor 18 mounted on the body 11. The liquid storage box 12 is mounted on the body 11, and the liquid storage cavity 121 of the liquid storage box 12 is used to store a mobile amount of laundry liquid, so that the user can avoid adding the laundry liquid to the cleaning cavity of the drum every time it is used. The cleaning cavity of the drum is used to hold clothes. When the clothes are placed in the cleaning cavity of the drum, the motor drives the drum to rotate so as to wash the clothes. The pump body 13 is used to provide power so that the cleaning liquid in the liquid storage box 12 enters the cleaning cavity of the drum after passing through the first liquid supply pipe 14 and the second liquid supply pipe 15. The ultrasonic sensor 18 has a transmitting end 181 and a receiving end 182. The first liquid supply pipe 14 is located between the transmitting end 181 and the receiving end 182. A detection position 183 is formed between the transmitting end 181 and the receiving end 182 for the first liquid supply pipe 14 to pass through. The groove between the transmitting end 181 and the receiving end 182 is the detection position 183. One end of the first liquid supply pipe 14 is connected to the liquid storage chamber 121, and the other end of the first liquid supply pipe 14 passes through the detection position 183 and is connected to the pump body 13. One end of the second liquid supply pipe 15 is connected to the pump body 13, and the other end of the second liquid supply pipe 15 is connected to the cleaning chamber. The pump body 13 is used to extract the laundry liquid in the liquid storage chamber 121, so that the laundry liquid in the liquid storage chamber 121 passes through the first liquid supply pipe 14 and the second liquid supply pipe 15 and enters the cleaning chamber of the drum. The first liquid supply pipe 14 and the second liquid supply pipe 15 can be regarded as two sections of the same pipe, so the laundry liquid in the second liquid supply pipe 15 can also be detected in other embodiments. The ultrasonic sensor 18 is used to detect laundry detergent. The ultrasonic sensor 18 uses ultrasonic waves for detection. The ultrasonic sensor 18 can detect whether there is laundry detergent or bubbles of laundry detergent without contacting the laundry detergent. When the ultrasonic sensor 18 detects, the ultrasonic probe of the ultrasonic sensor 18 is both a transmitter and a receiver, which can transmit ultrasonic waves to the object to be detected and receive the signals reflected, refracted or diffracted back. When ultrasonic waves propagate in different media, they will encounter interfaces with different acoustic impedances, and different reflections and refractions will occur. These reflected waves can be received by the receiver. Therefore, when the ultrasonic sensor 18 uses the propagation characteristics of ultrasonic waves to detect laundry detergent or bubbles, since the laundry detergent and bubbles will have different reflections and refractions, the ultrasonic sensor 18 can detect whether there is laundry detergent or bubbles based on the signals received that are reflected, refracted or diffracted back.

[0048] In addition, it is understandable that in other embodiments, the ultrasonic sensor 18 may also be replaced by a non-contact sensor such as a photoelectric sensor or a beam sensor.

[0049] At present, since the liquid storage box 12 is in the state of opening the lid, whether there is laundry detergent in the liquid storage cavity 121 can be observed by rubbing the eyes. At the same time, the absence of laundry detergent in the liquid storage box 12 does not mean that the laundry detergent will soon or has been used up, because some laundry detergent is still in the liquid supply pipe for conveying laundry detergent, and the user does not have to add laundry detergent to the liquid storage box 12 immediately. Therefore, it is generally not necessary to set a check sensor in the liquid storage box 12. However, when the laundry detergent in the liquid supply pipe is used up, it means that it will soon or has been used up. Therefore, the present application detects the laundry detergent in the first liquid supply pipe 14. Since the installation space of the probe type sensor is limited and the installation structure is complex when it is installed in the liquid supply pipe, it has a great impact on the sealing of the liquid supply pipe. Therefore, in the prior art, an intermediate compartment is generally set between the liquid storage box 12 and the drum, and a probe is used in the intermediate compartment for detection. In addition, when the probe type sensor is used in the prior art, when there is no laundry detergent, the steam drum of the laundry detergent can also be connected to the probe, thereby causing false perception.

[0050] Thus, the washing machine of this embodiment eliminates the original intermediate compartment and directly arranges the ultrasonic sensor 18 outside the first liquid supply pipe 14. The ultrasonic sensor 18 can accurately identify the two states of the pipe being full of laundry liquid and the pipe not being full of laundry liquid, and can also identify the bubble state, so that the washing machine can sense the laundry liquid more accurately. At the same time, the ultrasonic sensor 18 is not in direct contact with the laundry liquid, so the risk of the ultrasonic sensor 18 being ionized and corroded is completely avoided.

[0051] In one embodiment, the washing machine further comprises a third liquid supply pipe 16. One end of the third liquid supply pipe 16 is connected to the cleaning chamber, and the other end of the third liquid supply pipe 16 is used to connect to an external water source. The third liquid supply pipe 16 is used to supply water. When the washing machine is started, the third liquid supply pipe 16 injects water into the cleaning chamber of the drum, and the clothes are washed by mixing water and laundry detergent. The external water source is a water source such as a faucet and a water tank. It is understandable that a water pump can be installed on the third liquid supply pipe 16 to inject water into the cleaning chamber of the drum, and a water valve can also be installed on the third liquid supply pipe 16. After the water valve is opened, the water is injected into the cleaning chamber of the drum by opening the faucet. In addition, when it is impossible to inject water into the cleaning chamber of the drum through the third liquid supply pipe 16, water can also be directly poured into the cleaning chamber of the drum.

[0052] Furthermore, the washing machine also includes a pipe joint 19 and a mixing tube 17. The pipe joint 19 is a three-way joint, and the second liquid supply pipe 15 and the third liquid supply pipe 16 are both connected to one end of the mixing tube 17 through the pipe joint 19, and the other end of the mixing tube 17 is connected to the cleaning chamber. The laundry detergent has a high concentration and is viscous, and has poor fluidity. Compared with the prior art in which water and laundry detergent enter the cleaning chamber of the drum separately through different pipes, they can only fall directly onto part of the clothes and be adsorbed by the clothes. The washing machine of this embodiment is provided with a mixing tube 17 to mix the water and the laundry detergent first, which can not only save the material of the pipe fittings, but also improve the cleaning efficiency and quality. The water and the laundry detergent are first mixed and integrated, and then poured on the clothes, so that the distribution of the laundry detergent is more uniform, and the water and the laundry detergent are mixed in advance, which reduces the time waiting for the water and the laundry detergent to mix, and the cleaning efficiency and quality are greatly improved.

[0053] Optionally, the washing machine further includes an anti-backflow joint 20; the second liquid supply pipe 15 is connected to the pipeline joint 19 through the anti-backflow joint 20. The anti-backflow joint 20 can prevent water or the cleaning liquid diluted with water from returning to the second liquid supply pipe 15, causing the concentration of the unused cleaning liquid to decrease and affecting the next cleaning effect. The washing machine extracts a suitable volume of laundry liquid according to the needs of the user and transfers it to the mixing pipe 17.

[0054] In one embodiment, the anti-backflow joint 20 includes a tube body 201 and a movable seat 202. The tube body 201 has a liquid flow channel 203, a liquid inlet channel 204, and a liquid outlet channel 205. When installed, the liquid outlet channel 205, the liquid flow channel 203, and the liquid inlet channel 204 are arranged and connected in sequence from top to bottom. The liquid inlet channel 204 has a first liquid port 2041 connected to the liquid flow channel 203 and a second liquid port 2042 connected to the second liquid supply pipe 15. The liquid outlet channel 205 has a third liquid port 2051 connected to the liquid flow channel 203 and a fourth liquid port 2052 connected to the pipeline joint 19. In this way, the laundry detergent enters the second liquid supply pipe 15 from the pump body 13, then enters the liquid inlet channel 204 from the second liquid port 2042, then enters the liquid flow channel 203 from the first liquid port 2041 of the liquid inlet channel 204, and then the laundry detergent enters the pipeline joint 19 through the third liquid port 2051, the liquid outlet channel 205, and the fourth liquid port 2052.

[0055] The movable seat 202 is rotatably installed in the liquid flow channel 203 along the direction close to or away from the first liquid port 2041, and the movable seat 202 can rotate up and down in the liquid flow channel 203. The movable seat 202 switches between the sealing position and the conducting position. When the movable seat 202 is located at the sealing position, the movable seat 202 blocks the first liquid port 2041 of the liquid inlet channel 204. When the movable seat 202 is located at the conducting position, the movable seat 202 opens the first liquid port 2041 of the liquid inlet channel 204. When the laundry liquid enters the liquid inlet channel 204 from bottom to top under the action of the pump body 13, the laundry liquid lifts the movable seat 202 so that the movable seat 202 switches to the conducting position, the movable seat 202 leaves the first liquid port 2041, the first liquid port 2041 is connected with the liquid flow channel 203, and the laundry liquid can enter the pipe joint 19 from the liquid flow channel 203. When the pump body 13 stops working, the movable seat 202 rotates downward to approach the first liquid port 2041 and covers the first liquid port 2041 under the action of its own gravity and the gravity of the liquid in the liquid flow channel 203, that is, the movable seat 202 switches to the sealing position, and the movable seat 202 blocks the first liquid port 2041 of the liquid inlet channel 204 to prevent the mixed liquid of water and laundry detergent in the liquid flow channel 203 from flowing back.

[0056] Optionally, the movable seat 202 is in a hemispherical shape, and has a hemispherical surface and an end surface for blocking the first liquid port 2041 of the liquid inlet channel 204 . When the laundry liquid flows upward under the action of the pump body 13 , the end surface of the movable seat 202 is lifted.

[0057] In one embodiment, a groove 2021 is provided on the end surface of the movable seat 202, a positioning tube 206 is provided in the liquid flow channel 203, and the positioning tube 206 has a fifth liquid port 2061 communicated with the liquid inlet channel 204. When the movable seat 202 is located at the sealing position, the movable seat 202 is sleeved on the positioning tube 206 through the groove 2021 and blocks the fifth liquid port 2061. The groove 2021 is a semicircular groove, and the edge of the fifth liquid port 2061 is a circular arc section. The edge of the fifth liquid port 2061 is in close contact with the inner spherical surface of the groove 2021. The groove 2021 is sleeved on the positioning tube 206 to improve the sealing performance of the movable seat 202 when it is switched to the sealing position.

[0058] In one embodiment, the washing machine further comprises a first guide post 21, a second guide post 22, a first spring 23 sleeved on the first guide post 21, a second spring 24 sleeved on the second guide post 22, and a pressing plate 25. The liquid storage chamber 121 has a first inner side wall 122, one end of the pressing plate 25 is slidably mounted on the first guide post 21, and the other end of the pressing plate 25 is slidably mounted on the second guide post 22. The left end of the pressing plate 25 is slidably mounted on the first inner side wall 122 through the first guide post 21, and the right end of the pressing plate 25 is slidably mounted on the first inner side wall 122 through the second guide post 22. The pressing plate 25 can slide in a direction close to or away from the first inner side wall 122. A clamping channel 26 is formed between the pressing plate 25 and the first inner side wall 122, and the clamping channel 26 is used to clamp the washing liquid bag 30. The first spring 23 and the second spring 24 use elastic force to make the pressing plate 25 abut against the first inner side wall 122. The first guide column 21 and the second guide column 22 are both provided with limit heads. The first spring 23 and the second spring 24 are both clamped between the limit heads and the pressing plate 25. The first spring 23 and the second spring 24 are compressed. The first spring 23 and the second spring 24 apply elastic force to the pressing plate 25 so that the pressing plate 25 abuts against the first inner side wall 122. At this time, the width of the clamping channel 26 is zero. In the prior art, some laundry detergents are generally contained in a detergent bag 30. Since the laundry detergent is relatively viscous, when the laundry detergent in the detergent bag 30 is added to the liquid storage chamber 121, it is necessary to manually hold the detergent bag 30 to tilt and pour it in and wait for a certain period of time. The present application generates a clamping channel 26 by pulling the pressing plate 25 away from the first inner side wall 122, and then tilts the detergent bag 30 into the clamping channel 26 with the bag opening 301 facing downward, and releases the pressing plate 25 so that the pressing plate 25 and the first inner side wall 122 clamp the top edge of the detergent bag 30, so that the detergent bag 30 can be placed still in the liquid storage box 12, waiting for the laundry detergent in the detergent bag 30 to be automatically added to the liquid storage cavity 121, without the need for manual holding and fixing of the detergent bag 30.

[0059] Optionally, a pressing plate 25 is provided with a squeezing bar 29, which is located in the clamping channel 26. The squeezing bar 29 has an arc surface that abuts against the first inner side wall 122. When the washing liquid bag 30 is placed in the liquid storage box 12 for a period of time, the washing liquid bag 30 is pulled out downward. Under the action of the first spring 23 and the second spring 24, the squeezing bar 29 abuts against the washing liquid bag 30, and the washing liquid bag 30 and the squeezing bar 29 slide relative to each other. The squeezing bar 29 pushes the laundry liquid remaining on the inner wall of the washing liquid bag 30 into the liquid storage box 12.

[0060] In one embodiment, there are multiple first guide posts 21 and multiple second guide posts 22, and multiple first guide posts 21 are sequentially arranged at intervals along the first inclined linear track 27 from top to bottom, and multiple second guide posts 22 are sequentially arranged at intervals along the second inclined linear track 28 from top to bottom. The bag opening 301 of the washing liquid bag 30 is generally set on one side of the washing liquid bag 30. When pouring the washing liquid in an inclined manner, it is necessary to make the bag opening 301 at the lowest point of the washing liquid bag 30. Therefore, the present application positions multiple first guide posts 21 and multiple second guide posts 22 together, so that the washing liquid bag 30 can be placed in an inclined manner when placed in the clamping channel 26, that is, the bag opening 301 is at the lowest point of the washing liquid bag 30, which facilitates the rapid pouring of the washing liquid from the bag opening 301.

[0061] Furthermore, the liquid storage chamber 121 also has a first bottom wall 123, on which a boss extends downward, and a liquid collecting groove 124 connected to the liquid storage chamber 121 is provided on the boss, and the volume of the liquid collecting groove 124 is much smaller than the volume of the liquid storage chamber 121, and generally the volume of the liquid storage chamber 121 is twenty to thirty times the volume of the liquid collecting groove 124. The liquid in the liquid storage chamber 121 can be collected in the liquid collecting groove 124, and the liquid collecting groove 124 has a second bottom wall 125, on which a liquid drop hole 126 connected to the first liquid supply pipe 14 is opened, and the height of the first bottom wall 123 gradually increases in the direction away from the liquid collecting groove 124, so that the laundry liquid can quickly fall into the first liquid supply pipe 14.

[0062] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A washing machine, characterized in that: include: Body (11); A drum having a cleaning chamber and mounted on the machine body (11); A liquid storage box (12) having a liquid storage cavity (121); the liquid storage box (12) is installed on the machine body (11); A pump body (13) mounted on the machine body (11); a first liquid supply pipe (14); one end of the first liquid supply pipe (14) is in communication with the liquid storage chamber (121), and the other end of the first liquid supply pipe (14) is in communication with the pump body (13); a second liquid supply pipe (15); one end of the second liquid supply pipe (15) is in communication with the pump body (13), and the other end of the second liquid supply pipe (15) is in communication with the cleaning chamber; as well as An ultrasonic sensor (18) is installed on the machine body (11); the ultrasonic sensor (18) has a transmitting end (181) and a receiving end (182); the first liquid supply pipe (14) is located between the transmitting end (181) and the receiving end (182).

2. The washing machine according to claim 1, characterized in that: It also comprises a third liquid supply pipe (16); one end of the third liquid supply pipe (16) is connected to the cleaning chamber, and the other end of the third liquid supply pipe (16) is used to connect to an external water source.

3. The washing machine according to claim 2, characterized in that: It also includes a pipeline joint (19) and a mixing tube (17); the second liquid supply tube (15) and the third liquid supply tube (16) are both connected to one end of the mixing tube (17) through the pipeline joint (19), and the other end of the mixing tube (17) is connected to the cleaning chamber.

4. The washing machine according to claim 3, characterized in that: It also comprises an anti-backflow joint (20); the second liquid supply pipe (15) is connected to the pipeline joint (19) through the anti-backflow joint (20).

5. The washing machine according to claim 4, characterized in that: The anti-backflow joint (20) comprises a tube body (201) and a movable seat (202); the tube body (201) has a liquid flow channel (203), a liquid inlet channel (204), and a liquid outlet channel (205); the liquid inlet channel (204) has a first liquid port (2041) connected to the liquid flow channel (203) and a second liquid port (2042) connected to the second liquid supply pipe (15); the liquid outlet channel (205) has a third liquid port (2051) connected to the liquid flow channel (203) and a fourth liquid port (2052) connected to the pipeline joint (19); 52); the movable seat (202) is rotatably installed in the liquid flow channel (203) along a direction approaching or moving away from the first liquid port (2041), and the movable seat (202) switches between a sealing position and a conducting position; when the movable seat (202) is located at the sealing position, the movable seat (202) blocks the first liquid port (2041) of the liquid inlet channel (204); when the movable seat (202) is located at the conducting position, the movable seat (202) opens the first liquid port (2041) of the liquid inlet channel (204).

6. The washing machine according to claim 5, characterized in that: The movable seat (202) is in the shape of a hemisphere, and has a hemispherical surface and an end surface of the first liquid port (2041) for blocking the liquid inlet channel (204).

7. The washing machine according to claim 6, characterized in that: A groove (2021) is provided on the end surface of the movable seat (202), and a positioning tube (206) is provided in the liquid flow channel (203). The positioning tube (206) has a fifth liquid port (2061) connected to the liquid inlet channel (204). When the movable seat (202) is located at the sealing position, the movable seat (202) is sleeved on the positioning tube (206) through the groove (2021) and blocks the fifth liquid port (2061).

8. The washing machine according to any one of claims 1 to 7, characterized in that: The liquid storage chamber (121) further comprises a first guide column (21), a second guide column (22), a first spring (23) sleeved on the first guide column (21), a second spring (24) sleeved on the second guide column (22), and a pressure plate (25); the liquid storage chamber (121) comprises a first inner wall (122); one end of the pressure plate (25) is slidably mounted on the first guide column (21); the other end of the pressure plate (25) is slidably mounted on the second guide column (22); a clamping channel (26) is formed between the pressure plate (25) and the first inner wall (122); the first spring (23) and the second spring (24) use elastic force to make the pressure plate (25) abut against the first inner wall (122).

9. The washing machine according to claim 8, characterized in that: The pressing plate (25) is provided with an extrusion strip (29), and the extrusion strip (29) is located in the clamping channel (26).

10. The washing machine according to claim 9, characterized in that: There are a plurality of the first guide posts (21) and a plurality of the second guide posts (22), the plurality of the first guide posts (21) are sequentially arranged at intervals from top to bottom along a first inclined straight track (27), and the plurality of the second guide posts (22) are sequentially arranged at intervals from top to bottom along a second inclined straight track (28).

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