Pump structure and clothes treating apparatus

Abstract

The utility model discloses a pump structure and clothes treating equipment. The pump structure comprises a pump shell and a pump body assembly. The pump shell defines a pump cavity and a liquid suction port and a liquid outlet which are communicated with the pump cavity, and the liquid suction port is located at the bottom of the pump shell. The pump body assembly comprises a driving part and an impeller, the driving part is arranged outside the pump cavity and connected with the pump shell, the impeller is connected with the output end of the driving part and rotatably arranged in the pump cavity, and part of the impeller penetrates out of the liquid suction opening so that negative pressure can be formed at the liquid suction opening through rotation. According to the technical scheme, liquid residues on the base can be reduced, and user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of clothing processing, and in particular to a pump structure and clothing processing equipment. Background Art

[0002] In daily life, most clothing processing equipment has a clothes drying function. After the wet clothes are dried by the clothing processing equipment, they can be worn immediately after drying, which greatly improves people's quality of life.

[0003] The moisture of the air-dried clothes is condensed and temporarily stored on the base, and a water pump is also provided on the base to pump out the water on the base. In the related art, it is difficult for the water pump to completely drain the water stored in the base, and the water on the base that remains for a long time is prone to odor, affecting the user experience. Utility Model Content

[0004] The embodiments of the present application provide a pump structure and a clothing processing device, which can reduce liquid residue in the base and improve user experience.

[0005] In the first aspect, the pump structure proposed in the embodiment of the present application includes:

[0006] A pump housing, defining a pump chamber and a liquid suction port and a liquid discharge port connected to the pump chamber, wherein the liquid suction port is located at the bottom of the pump housing; and

[0007] The pump body assembly includes a driving member and an impeller. The driving member is arranged outside the pump chamber and connected to the pump housing. The impeller is connected to the output end of the driving member and is rotatably arranged in the pump chamber. Part of the impeller passes through the suction port to form negative pressure at the suction port by rotating.

[0008] In one embodiment, the rotation axis of the impeller is parallel to or coincides with the central axis of the liquid suction port.

[0009] In one embodiment, the impeller comprises:

[0010] a blade disk connected to the output end of the driving member; and

[0011] A plurality of blades are arranged on a side of the blade disk away from the driving member and are spaced apart along the circumference of the blade disk;

[0012] The blades extend from the blade disk in a direction away from the driving member, and the extending direction of the blades is parallel to the rotation axis of the impeller.

[0013] In one embodiment, a portion of the upper surface of the pump chamber is arched upward to form a receiving groove, and at least a portion of the blade disk is located in the receiving groove;

[0014] The bottom wall of the receiving groove is provided with a connection hole, and the pump body assembly further includes a connection column connecting the impeller disc. The connection column passes through the connection hole and is connected to the output end of the driving member.

[0015] In one embodiment, the pump housing includes an upper cover plate and a connection plate located above the upper cover plate. The upper cover plate is used to form at least part of the upper wall surface of the pump chamber. The upper cover plate is provided with a communication hole, and the connection plate masks the communication hole to jointly construct the receiving groove with the upper cover plate. The communication hole constructs the notch of the receiving groove, and the connection plate is provided with the connection hole;

[0016] The upper surface of the impeller disc is flush with the upper surface of the upper cover plate.

[0017] In one embodiment, the impeller further includes:

[0018] Reinforcing columns, connected to the side of the impeller disc facing away from the driving member and extending along the rotation axis of the impeller. A plurality of the blades are arranged around the reinforcing columns and connected to the reinforcing columns.

[0019] In one embodiment, in the direction from the impeller disc to the liquid suction port, the width of the blade in the radial direction of the impeller gradually decreases.

[0020] In one embodiment, the side surface of the blade facing away from the rotation axis of the impeller is provided as an arc surface arched towards the center of the impeller, and the center of the impeller is on the rotation axis of the impeller.

[0021] In one embodiment, the liquid outlet is located at the top of the pump chamber and on one side of the impeller; and / or,

[0022] The pump chamber is flat.

[0023] In one embodiment, the distance between the upper wall surface and the lower wall surface of the pump chamber is D, satisfying the relationship: 9 mm ≤ D ≤ 11 mm.

[0024] In one embodiment, the pump housing includes:

[0025] A first housing, provided with the liquid outlet, and the driving member is connected to the first housing; and

[0026] A second housing, detachably connected to the first housing to jointly define the pump chamber with the first housing, and the liquid suction port is provided on the second housing.

[0027] In a second aspect, an embodiment of the present application provides a laundry treatment device, including:

[0028] A box body, having a base;

[0029] A barrel assembly is provided on the base and has a laundry processing chamber;

[0030] A heat pump system is connected to the base; and

[0031] The pump structure according to any one of the above is provided on the base, and a part of the impeller passing through the liquid suction port is spaced apart from the base.

[0032] Based on the above embodiments, the impeller is rotatably provided in the pump chamber and partially passes through the liquid suction port located at the bottom of the pump casing to form a negative pressure at the liquid suction port by rotation. When the impeller rotates, the part of the impeller extending out of the liquid suction port disturbs the liquid below the pump casing, and a negative pressure is formed at the liquid suction port, making it easier for the liquid below the pump casing to be sucked to the liquid suction port. Thus, in the embodiments of the present application, when there is less liquid on the base, through the rotation of the part of the impeller extending out of the liquid suction port, the liquid can still be effectively sucked into the pump chamber and discharged, thereby effectively reducing or avoiding liquid accumulation on the chassis and improving the user experience. In addition, the negative pressure environment near the liquid suction port is conducive to keeping the liquid at the liquid suction port, which is beneficial to the construction of the negative pressure environment in the pump chamber, enabling the liquid to enter the pump chamber more stably and quickly, reducing the time of gas-liquid coexistence, and thus reducing noise. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0034] Figure 1 It is a schematic structural diagram of an embodiment of the pump structure of the present application;

[0035] Figure 2 It is Figure 1 The cross-sectional structural diagram of the pump structure in

[0036] Figure 3 It is Figure 1 The schematic structural diagram of another perspective of the pump structure in

[0037] Figure 4 It is Figure 3 The exploded structural diagram of the pump structure in

[0038] Figure 5 It is the schematic structural diagram of an embodiment of the present application.

[0039] Explanation of the reference numerals in the drawings:

[0040] 100. Pump structure; 10. Pump housing; 11. Pump chamber; 12. First housing; 121. Liquid outlet; 122. Upper cover plate; 1211. Communication hole; 123. Accommodation groove; 124. First clamping portion; 125. First connection hole; 13. Second housing; 131. Liquid suction port; 132. Second clamping portion; 133. Second connection hole; 14. Liquid outlet pipe; 15. Connection plate; 30. Pump body assembly; 31. Driving member; 32. Impeller; 321. Impeller disc; 322. Blades; 323. Reinforcing column; 33. Connection column.

[0041] The realization of the purpose of this application, functional features and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0042] To make the purpose, technical solutions and advantages of this application clearer, the following will further describe in detail the embodiments of this application in conjunction with the accompanying drawings.

[0043] When the following description involves the accompanying drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with this application. On the contrary, they are only examples of the devices and methods that are consistent with some aspects of this application as detailed in the appended claims.

[0044] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise stated, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] The embodiments of this application propose a clothing treatment device. The clothing treatment device can be a dryer or a washing machine integrated with a drying function, and is used for drying clothes and the like. After the wet clothes are dried by the clothing treatment device, the effect of being able to wear the clothes immediately after drying can be achieved, which greatly improves the quality of people's lives.

[0047] In some structural forms, the laundry treatment device includes a cabinet, a drum assembly, a heat pump system, and a pump structure 100.

[0048] The cabinet forms the outer shell part of the laundry treatment device, and can provide an installation foundation for devices such as the drum assembly, the heat pump system, and the pump structure 100, and plays a protective role. At the same time, the surface of the cabinet also constitutes the main appearance surface of the laundry treatment device. Among them, the cabinet has a base for supporting on the ground or the installation surface, and devices such as the drum assembly, the heat pump system, and the pump structure 100 are all arranged on the base.

[0049] The drum assembly is a structure mainly used to provide laundry treatment functions in the laundry treatment device. The drum assembly defines a laundry treatment cavity and a feeding port communicating with the laundry treatment cavity. Laundry can be put into the laundry treatment cavity through the feeding port, or taken out of the laundry treatment cavity through the feeding port.

[0050] In some embodiments, a drying channel, a first air outlet, and a second air outlet communicating the drying channel and the laundry treatment cavity are formed on the base. Gas can flow into the laundry treatment cavity through the drying channel to dry the laundry. The heat pump system can form a refrigerant cycle and is used to heat the air flow passing through the drying channel. Exemplarily, the heat pump system includes a compressor, a condenser, and an evaporator. The compressor, the condenser, and the evaporator are all arranged on the base, and along the flow direction of the air flow in the drying channel (from the second air outlet to the first air outlet), the evaporator and the condenser are arranged at intervals in sequence. It can be understood that the compressor, the condenser, and the evaporator are connected through a refrigerant pipeline. The specific principle is as follows: The compressor inhales low-pressure gaseous refrigerant, compresses it and discharges it at high pressure. The discharged high-pressure refrigerant enters the condenser and is cooled by normal-temperature air and condenses into high-pressure liquid (while transferring heat to the surrounding air); the high-pressure liquid refrigerant flows through the expansion valve to throttle and decompress, and then becomes a low-pressure and low-temperature gas-liquid two-phase mixture and enters the evaporator. The liquid refrigerant in it evaporates and refrigerates in the evaporator (while absorbing heat from the surrounding air), and the generated low-pressure gaseous refrigerant is inhaled by the compressor again for pressurization, so on and so forth, continuously circulating to achieve heat exchange.

[0051] For example, the working process of the laundry treatment device during the laundry drying operation is as follows: The condenser heats the air flow in the drying channel to generate high-temperature dry air at about 40°C & 65°C. The dry air enters the laundry treatment cavity through the first air outlet; in the laundry treatment cavity, the dry air flows through the surface of the wet laundry, conducts heat and moisture exchange with the wet laundry, absorbs the moisture in the laundry, and becomes high-temperature and high-humidity gas. The high-temperature and high-humidity gas is discharged from the laundry treatment cavity through the second air outlet, and then passes through the evaporator. The high-temperature and high-humidity air is cooled to become low-temperature and low-humidity gas and flows to the condenser. Such cyclic operation realizes continuous and efficient drying of the laundry.

[0052] During the drying operation of the laundry treatment device, the condensed liquid accumulates at the base. To prevent the liquid from affecting the normal operation of the laundry treatment device, the accumulated liquid is pumped out through the pump structure 100. In the related art, it is difficult for the water pump to completely pump out the liquid temporarily stored at the base, and the long-term residue of the liquid on the base is likely to produce an odor, affecting the user experience.

[0053] To solve the above problems, an embodiment of the present application further provides a pump structure 100. In combination with Figures 1 to 3 , in some embodiments, the pump structure 100 of the embodiment of the present application includes a pump housing 10 and a pump body assembly 30. Among them, the pump housing 10 defines a pump chamber 11 and a liquid suction port 131 and a liquid discharge port 121 communicating with the pump chamber 11. The liquid suction port 131 is located at the bottom of the pump housing 10 to facilitate the liquid to enter the pump chamber 11. Optionally, the liquid discharge port 121 is provided above or on the side of the pump housing 10. The pump body assembly 30 includes a driving member 31 and an impeller 32. The driving member 31 is disposed outside the pump chamber 11 and connected to the pump housing 10, and the impeller 32 is connected to the output end of the driving member 31. Optionally, the driving member 31 can be a motor. The impeller 32 is rotatably disposed in the pump chamber 11 and can rotate under the driving action of the driving member 31. It can be understood that when the impeller 32 rotates, a negative pressure is formed in the pump chamber 11, so that the liquid in the base enters the pump chamber 11 under the action of the atmospheric pressure, and the rotating impeller 32 makes the liquid in the pump chamber 11 flow to the liquid discharge port 121.

[0054] In the embodiment of the present application, a part of the impeller 32 passes through the liquid suction port 131 to form a negative pressure at the liquid suction port 131 by rotation. For example, the impeller 32 has a rotation axis Z. When the laundry treatment device is placed horizontally, the rotation axis Z of the impeller 32 is perpendicular to the horizontal plane or is disposed at an angle. When the impeller 32 rotates, the part of the impeller 32 extending out of the liquid suction port 131 disturbs the liquid below the pump housing 10 and forms a negative pressure at the liquid suction port 131, so that the liquid below the pump housing 10 is more easily sucked to the liquid suction port 131. Thus, in the embodiment of the present application, when the liquid on the base is less, through the rotation of the part of the impeller 32 extending out of the liquid suction port 131, the liquid can still be effectively sucked into the pump chamber 11 and discharged, thereby effectively reducing or avoiding the accumulation of liquid on the chassis, improving the liquid pumping effect, and improving the user experience. In addition, the negative pressure environment near the liquid suction port 131 is conducive to keeping the liquid at the liquid suction port 131, conducive to the construction of the negative pressure environment in the pump chamber 11, enabling the liquid to enter the pump chamber 11 more stably and quickly, reducing the coexistence time of gas and liquid, and thus reducing noise.

[0055] As Figure 4As shown, in some embodiments, the rotation axis Z of the impeller 32 is parallel to or coincides with the central axis of the liquid suction port 131. In this way, when the impeller 32 rotates, the liquid intake at the liquid suction port 131 can be made uniform. When the rotation axis Z of the impeller 32 coincides with the central axis of the liquid suction port 131, keeping the impeller 32 rotating at the central part of the liquid suction port 131 not only improves the stability of the impeller 32, but also avoids collision or interference between the impeller 32 and the wall of the liquid suction port 131.

[0056] Generally, the central axis of the liquid suction port 131 is perpendicular to the horizontal plane. In the above embodiments, the rotation axis Z of the impeller 32 is also perpendicular to the horizontal plane. That is to say, the central axis of the liquid suction port 131 and the rotation axis Z of the impeller 32 extend along the height direction perpendicular to the horizontal plane. It can be understood that if the rotation axis Z of the impeller 32 is parallel to the horizontal plane, in order to accommodate the impeller 32, the dimension of the pump chamber 11 in the height direction is relatively large. Therefore, compared with the technical solution where the rotation axis Z of the impeller 32 is parallel to the horizontal plane, the embodiments of the present application make the rotation axis Z of the impeller 32 perpendicular to the horizontal plane, which is beneficial to reducing the dimension of the pump chamber 11 in the height direction.

[0057] Combined Figure 2 , in one embodiment, the pump chamber 11 is flatly arranged, and the dimension of the pump chamber 11 in the height direction is small. The liquid entering the pump chamber 11 can more easily fill the pump chamber 11, reducing the coexistence of gas and liquid in the pump chamber 11, thereby reducing the noise during the operation of the pump structure 100.

[0058] For example, in a specific structure, the distance between the upper wall surface and the lower wall surface of the pump chamber 11 is D, satisfying the relationship: 9 mm ≤ D ≤ 11 mm. For this pump chamber 11 with a fixed volume, if D > 11 mm, the coexistence of gas and liquid is likely to occur. If D < 9 mm, not only is it not convenient to arrange the impeller 32, but the smaller pump chamber 11 also affects the drainage efficiency. Therefore, in this specific structure, in order to reduce the occurrence of the coexistence of gas and liquid and ensure the drainage efficiency, it is limited that 9 mm ≤ D ≤ 11 mm. Optionally, D can take values such as 9.5 mm, 10 mm, etc. Of course, for pump structures 100 and laundry treatment devices of different specifications, the distance between the upper wall surface and the lower wall surface of the pump chamber 11 can also take other values, and the embodiments of the present application do not give more examples here.

[0059] Optionally, the liquid outlet 121 is located at the top of the pump chamber 11 and at one side of the impeller 32. When the impeller 32 rotates, the liquid thrown out flows to the liquid outlet 121 under the action of the wall of the pump chamber 11. Setting the liquid outlet 121 at the top of the pump chamber 11 is conducive to maintaining the state in which the pump chamber 11 is filled with liquid while ensuring the discharge of liquid, and further reducing the coexistence of gas and liquid. Among them, the shell is provided with a liquid outlet pipe 14 extending in the height direction, and the liquid outlet pipe 14 is connected to the liquid outlet 121. The external pipeline is connected to the liquid outlet 121 by connecting the liquid outlet pipe 14, which is convenient for pipe connection.

[0060] Combination Figure 2 and Figure 5 In some embodiments, the impeller 32 includes a blade disk 321 and a plurality of blades 322. The blade disk 321 is connected to the output end of the driving member 31, and the plurality of blades 322 are arranged on a side of the blade disk 321 away from the driving member 31 and are arranged at intervals along the circumference of the blade disk 321. The stability of the blades 322 is improved by arranging the plurality of blades 322 on the blade disk 321.

[0061] Optionally, the blades 322 extend from the blade disk 321 in a direction away from the driving member 31, and the extension direction of the blades 322 is parallel to the rotation axis Z of the impeller 32. In this way, when the driving member 31 adopts an AC motor, the impeller 32 can rotate counterclockwise or clockwise around the rotation axis Z, and the liquid can enter the pump chamber 11 from the suction port 131 and be discharged from the liquid outlet 121. Alternatively, the driving member 31 can also adopt a DC motor to drive the impeller 32 to rotate in one direction around the rotation axis Z, and the multiple blades 322 can also be arranged in a spiral shape. Among them, the pump structure 100 using an AC motor has fewer parts, occupies a smaller volume, and improves space utilization.

[0062] In one embodiment, part of the upper surface of the pump chamber 11 is arched upward to form a receiving groove 123, and at least part of the blade disk 321 is located in the receiving groove 123. It can be understood that the notch of the receiving groove 123 is arranged downward, and opposite to the notch, the bottom wall of the groove of the receiving groove 123 is provided with a connecting hole, and the pump body assembly 30 also includes a connecting column 33 connected to the blade disk 321, and the connecting column 33 is passed through the connecting hole and connected to the output end of the driving member 31. For example, the blade disk 321 can be completely located in the receiving groove 123, or partially located in the receiving groove 123. In this way, the present embodiment can reduce the size of the pump chamber 11 in the height direction under the premise of accommodating the impeller 32, further reduce the coexistence of gas and liquid in the pump chamber 11, and reduce noise. In addition, foreign matter such as hair in the liquid is not easy to be rolled into the space between the blade disk 321 and the upper wall of the pump chamber 11, thereby improving the structural reliability and reducing the cleaning frequency.

[0063] Furthermore, when projected in the height direction, the projection of the blade disk 321 is located in the receiving groove 123, and the contour of the projection of the receiving groove 123 is substantially the same as the contour of the blade disk 321. For example, the blade disk 321 is a circular disk-shaped structure, and the contour of the projection of the receiving groove 123 is circular and slightly larger than the blade disk 321. In this way, while ensuring the normal rotation of the blade disk 321, foreign matter such as hair in the liquid is further prevented from entering the receiving groove 123.

[0064] Specific combination Figure 2 The housing includes an upper cover plate 122 and a connecting plate 15 located above the upper cover plate 122. The upper cover plate 122 is used to form at least part of the upper wall of the pump chamber 11. The upper cover plate 122 is provided with a connecting hole 1211. The connecting plate 15 covers the connecting hole 1211 to form a receiving groove 123 together with the upper cover plate 122. The connecting hole 1211 forms a notch of the receiving groove 123. The connecting hole is provided on the connecting plate 15. The connecting column 33 passes through the connecting hole to connect with the output end of the driving member 31. The upper surface of the leaf disk 321 is flush with the upper surface of the upper cover plate 122, so that foreign matter such as hair in the liquid is not easily rolled into between the leaf disk 321 and the upper cover plate 122.

[0065] The upper cover plate 122 and the connecting plate 15 may be separate structures or integrated structures, which is not limited in the embodiment of the present application.

[0066] To improve the stability of the blades 322 , the impeller 32 further includes a reinforcing column 323 , which is connected to the side of the blade disk 321 away from the driving member 31 and extends along the rotation axis Z of the impeller 32 . A plurality of blades 322 are arranged around the reinforcing column 323 and are connected to the reinforcing column 323 .

[0067] Please refer to Figure 4 and Figure 5 In one embodiment, the width of the blade 322 in the radial direction of the impeller 32 gradually decreases from the direction of the blade disk 321 to the liquid suction port 131. That is, the width of the blade 322 in the radial direction of the impeller 32 is larger near the blade disk 321, and smaller at the end away from the blade disk 321. On the one hand, the larger width at the blade disk 321 can improve the connection strength between the blade 322 and the blade disk 321, and improve the stability of the blade 322; on the other hand, at the end away from the blade disk 321, the smaller width of the blade 322 makes the overall width of this part of the impeller 32 smaller, and correspondingly the diameter of the liquid suction port 131 is also smaller, which is convenient for forming a negative pressure state, thereby facilitating liquid suction, and the smaller width of the blade 322 can also avoid the interference between the blade 322 and the wall of the liquid suction port 131, and reduce the vibration of the blade 322 at the end away from the blade disk 321, improve the stability of the blade 322, and reduce the noise generated by the operation of the impeller 32.

[0068] Exemplarily, the side of the blade 322 facing away from the rotation axis Z of the impeller 32 is provided with an arc surface that arches towards the center of the impeller 32. The center of the impeller 32 is on the rotation axis Z of the impeller 32. At the same time, it is ensured that the blade 322 has a larger width at the end close to the disk 321 and a smaller width at the end far from the disk 321. Of course, the side of the blade 322 facing away from the rotation axis Z of the impeller 32 can also be a straight line at an angle to the rotation axis Z, and the embodiments of the present application do not limit this.

[0069] Combined with Figure 4 , in one embodiment, the pump housing 10 includes a first housing 12 and a second housing 13 that are detachably connected. The first housing 12 and the second housing 13 jointly define a pump chamber 11. Among them, the driving member 31 is connected to the first housing 12, the liquid outlet 121 is provided on the first housing 12, and the liquid suction port 131 is provided at the bottom of the second housing 13. In this embodiment, by removing the second housing 13, the wall surface inside the pump chamber 11 and the impeller 32 can be exposed, facilitating cleaning, maintenance, and assembly, and improving work efficiency. The detachable connection method between the first housing 12 and the second housing 13 can adopt one or several of connection methods such as snap connection and bolt connection.

[0070] For example, the first housing 12 is provided with a first clamping portion 124 and a first connection hole 125, and the second housing 13 is provided with a second clamping portion 132 and a second connection hole 133. When the first housing 12 and the second housing 13 are connected, the first clamping portion 124 and the second clamping portion 132 are first clamped for pre-positioning, and then the fastener (bolt) is connected to the first connection hole 125 and the second connection hole 133. While the disassembly and assembly are relatively convenient, the connection is more stable and reliable.

[0071] The above is a specific explanatory description of the pump structure provided by the embodiments of the present application. It can be understood that since the laundry treatment device of the present application adopts all the technical solutions of the above all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0072] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0073] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A pump structure, characterized in that, Comprising: A pump housing that defines a pump chamber and a liquid suction port and a liquid discharge port communicating with the pump chamber, the liquid suction port being located at the bottom of the pump housing; And A pump body assembly including a driving member and an impeller, the driving member being disposed outside the pump chamber and connected to the pump housing, the impeller being connected to the output end of the driving member and rotatably disposed in the pump chamber, and a part of the impeller passing through the liquid suction port to form a negative pressure by rotating at the liquid suction port.

2. The pump structure according to claim 1, wherein, The rotation axis of the impeller is parallel to or coincides with the central axis of the liquid suction port.

3. The pump structure according to claim 1, wherein, The impeller includes: A disk connected to the output end of the driving member; and A plurality of blades disposed on a side of the disk facing away from the driving member and spaced apart circumferentially along the disk; Wherein, the blades extend from the disk in a direction away from the driving member, and the extending direction of the blades is parallel to the rotation axis of the impeller.

4. The pump structure according to claim 3, characterized in that, A part of the upper surface of the pump chamber arches upward to form a receiving groove, and at least a part of the disk is located in the receiving groove; A connecting hole is provided on the bottom wall of the receiving groove, and the pump body assembly further includes a connecting column connecting the disk, the connecting column passing through the connecting hole and being connected to the output end of the driving member.

5. The pump structure according to claim 4, wherein The pump housing includes an upper cover plate and a connecting plate located above the upper cover plate, the upper cover plate being used to form at least a part of the upper wall surface of the pump chamber, the upper cover plate being provided with a communication hole, the connecting plate covering the communication hole to jointly construct the receiving groove with the upper cover plate, the communication hole constructing the notch of the receiving groove, and the connecting plate being provided with the connecting hole; The upper surface of the disk is flush with the upper surface of the upper cover plate.

6. The pump structure according to claim 3, wherein The impeller further includes: Reinforcing columns connected to a side of the disk facing away from the driving member and extending along the rotation axis of the impeller, and a plurality of the blades are arranged around the reinforcing columns and connected to the reinforcing columns.

7. The pump structure according to claim 3, wherein In the direction from the disk towards the liquid suction port, the width of the blades in the radial direction of the impeller gradually decreases.

8. The pump structure according to claim 7, characterized in that, The side surface of the blade facing away from the rotation axis of the impeller is provided with an arc surface arched towards the center of the impeller, and the center of the impeller is on the rotation axis of the impeller.

9. The pump structure according to any one of claims 1 to 8, characterized in that, The liquid discharge port is located at the top of the pump chamber and on one side of the impeller; and / or, The pump chamber is flat.

10. The pump structure according to claim 9, characterized in that, The distance between the upper wall surface and the lower wall surface of the pump chamber is D, satisfying the relationship: 9 mm ≤ D ≤ 11 mm.

11. The pump structure according to any one of claims 1 to 8, characterized in that, The pump housing includes: A first housing provided with the liquid discharge port, the driving member being connected to the first housing; and A second housing detachably connected to the first housing to jointly define the pump chamber with the first housing, the liquid suction port being provided on the second housing.

12. A laundry treatment device, characterized in that, Comprising: A box body having a base; A barrel assembly disposed on the base and having a laundry treatment chamber; A heat pump system connected to the base; And The pump structure according to any one of claims 1 to 11, disposed on the base, and the part of the impeller passing through the liquid suction port is spaced apart from the base.

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