Drain pump and air conditioner

Abstract

The utility model discloses a kind of drainage pump and air conditioner, it is related to air conditioning field.Drainage pump includes: pump shell, water inlet and drain are equipped on pump shell;Driving motor, driving motor is located in pump shell;Impeller, impeller is located in pump shell, and it is connected with motor shaft of driving motor, impeller is located between the flow path from water inlet to drain;Support, support buckle connection is on pump shell;Water level sensor, water level sensor is located on support.The drainage pump is installed on shell by design support with water level sensor, realizes high integration, effectively reduces the overall occupied volume, and the installation mode makes that water level sensor installation is convenient, can accurately monitor water level.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning, specifically to a drain pump and an air conditioner. Background Technology

[0002] In existing air conditioners, condensate on the surface of the heat exchanger drips down into a condensate drain pan during cooling. A drain pump is then used to pump this condensate to a level higher than the outlet, hence the common practice of installing a drain pump at the condensate drain pan. However, in current designs, the drain pump and the water level sensor are separately mounted on the air conditioner's chassis mounting plate. This decentralized layout not only increases the overall size of the air conditioner but also makes them prone to misalignment (such as relative misalignment between the sensor and the liquid surface), resulting in erroneous water level monitoring signals and affecting the normal operation of the air conditioner.

[0003] Even in solutions where the sensor is mounted on the drainage pump, the positioning accuracy is difficult to guarantee. Therefore, improvements are needed to address these issues. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a drainage pump that is highly integrated, effectively reducing its footprint, and features a water level sensor with high monitoring accuracy and easy installation.

[0005] This invention also aims to provide an air conditioner having the aforementioned drain pump.

[0006] A drainage pump according to an embodiment of the present invention includes: a pump casing with an inlet and a outlet; a drive motor disposed within the pump casing; an impeller located within the pump casing and connected to the motor shaft of the drive motor, the impeller being positioned within a flow path from the inlet to the outlet; a bracket snap-fitted onto the pump casing; and a water level sensor disposed on the bracket.

[0007] According to the present invention, the drain pump is equipped with a bracket to mount the water level sensor on the pump casing, thereby achieving a highly integrated design of the drain pump and the water level sensor. This effectively reduces the independent installation space requirement of the water level sensor in the air conditioner, thus reducing the overall size of the air conditioner.

[0008] Compared to existing technologies where sensors are fixedly mounted on drainage pumps, misalignment during assembly can easily lead to inaccurate detection. In this application, the water level sensor is securely connected to the pump housing via a snap-fit ​​structure, simplifying the installation process. Compared to separate installation methods involving the drainage pump and water level sensor, and compared to methods where the sensor is fixed to the drainage pump without a defined position, this application uses a snap-fit ​​structure to determine the sensor's position relative to the drainage pump's inlet. This integrated connection not only improves the relative positional accuracy of the water level sensor and the liquid surface, enhancing the accuracy of water level monitoring, but also facilitates quick disassembly, assembly, and maintenance of the water level sensor.

[0009] In some embodiments, the bracket includes: a vertical frame with a first snap-fit ​​portion on one side; a horizontal frame with a second snap-fit ​​portion at the bottom; a first receiving buckle on the side of the pump housing; and a second receiving buckle on the top surface of the pump housing.

[0010] The first snap-fit ​​part snaps onto the first receiving buckle, and the second snap-fit ​​part snaps onto the second receiving buckle.

[0011] In some embodiments, one of the first snap-fit ​​portion and the first receiving buckle is provided with a vertical insert rib, and the other is provided with a vertical slot, and the first snap-fit ​​portion is inserted into the first receiving buckle from above.

[0012] In some embodiments, the first snap-fit ​​portion includes: two spaced vertical plates, the two vertical plates forming the vertical slots on their respective sides facing each other; The first receiving buckle includes two spaced vertical ribs, the two vertical ribs forming the vertical inserts on the side away from each other.

[0013] In some embodiments, the second receiving buckle includes: a boss formed on the top of the pump housing; and two slots formed on opposite sides of the boss.

[0014] The second latching part includes: a horizontal connecting plate; two latches connected to both ends of the horizontal connecting plate, each latch being inserted into a corresponding latching slot.

[0015] In some embodiments, the bracket further includes: a column connected to the bottom of the vertical frame, and the water level sensor is sleeved and connected to the column.

[0016] In some embodiments, the pump housing includes: a middle pump housing with open upper and lower ends, wherein the drive motor and the impeller are both installed inside the middle pump housing; an upper pump housing connected to the top of the middle pump housing; and a lower pump housing connected to the bottom of the middle pump housing.

[0017] In some embodiments, the pump housing further includes: a drain pipe disposed on the side of the pump housing, the opening of the drain pipe constituting the drain outlet; a fixing plate disposed on the drain pipe; and a connecting piece for communication control, the connecting piece being disposed on the fixing plate.

[0018] In some embodiments, the pump housing further includes a buffer adhesive layer disposed on the fixed plate.

[0019] An air conditioner according to an embodiment of the present invention includes: the drain pump described in any of the above embodiments.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 Exploded views of drainage pumps according to some embodiments of this utility model; Figure 2 These are isometric views of drainage pumps according to some embodiments of this utility model; Figure 3 This is a front view of a drainage pump according to some embodiments of the present invention; Figure 4 This is a top view of the crossbeam in some embodiments of the present invention; Figure 5 These are side views of the bracket according to some embodiments of the present invention; Figure 6 These are isometric views of the brackets according to some embodiments of this utility model; Figure 7 This is a schematic diagram of the vertical slot in the bracket of some embodiments of the present invention; Figure 8 The above views are of the second and first receiving buckles of the upper pump housing according to some embodiments of this utility model. Figure 9 This is a schematic diagram of the vertical reinforcing bars of the upper pump housing in some embodiments of the present invention; Figure 10 These are schematic diagrams of vertical ribs in some embodiments of this utility model; Figure 11 This is a schematic diagram of the second receiving buckle of the upper pump housing in some embodiments of the present invention; Figure 12 This is an isometric view of the pump casing in some embodiments of the present invention; Figure 13This is a front view of the pump casing in some embodiments of the present invention; Figure 14 This is a top view of the pump casing in some embodiments of the present invention; Figure 15 This is a schematic diagram showing the location of the buffer adhesive layer in some embodiments of this utility model; Figure 16 This is a front view of the lower pump housing according to some embodiments of the present invention; Figure 17 This is a schematic diagram of the pump casing inlet of some embodiments of the present invention; Figure 18 This is an isometric view of the lower pump casing according to some embodiments of the present invention; Figure 19 This is a schematic diagram of the water inlet of the pump casing from another angle, representing some embodiments of this utility model.

[0022] Figure label: Drainage pump 10 Pump casing 1, inlet 11, outlet 12 First connecting buckle 13, vertical dowel bar 131, vertical rib 132. Second receiving buckle 14, boss 141, slot 142 15. Middle pump housing, 16. Upper pump housing, 17. Lower pump housing, 18. Drain pipe, 19. Fixing plate, 20. Connecting piece, 22. Buffer rubber layer Drive motor 2, motor shaft 21 Impeller 3 Support bracket 4, vertical frame 41, first locking part 411, vertical slot 4111, vertical plate 4112, horizontal frame 42, second locking part 421, horizontal connecting plate 4211, claw 4212, column 43 Water level sensor 5. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The drainage pump 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0026] According to the embodiment of the present utility model, the drainage pump 10, with reference to... Figures 1-7 It includes: pump casing 1, drive motor 2, impeller 3, bracket 4 and water level sensor 5.

[0027] The pump casing 1 is provided with an inlet 11 and a outlet 12. The drive motor 2 is located inside the pump casing 1. The impeller 3 is located inside the pump casing 1 and is connected to the motor shaft 21 of the drive motor 2. The impeller 3 is located between the flow path from the inlet 11 to the outlet 12. The bracket 4 is snapped onto the pump casing 1. The water level sensor 5 is located on the bracket 4.

[0028] Specifically, the drain pump 10 has an inlet 11 and a drain outlet 12 on its pump casing 1. Condensate dripping from the heat exchanger of the air conditioner (not shown) collects in a condensate tank. The drain pump 10 is located at the condensate tank. The condensate enters through the inlet 11 on the casing 1 and is discharged to the external environment through the drain outlet 12. The drive motor 2 and impeller 3 are both housed in the internal cavity of the casing 1. The motor shaft 21 of the drive motor 2 and the impeller 3 are coaxially connected. When the drive motor 2 is powered on, the motor shaft 21 drives the impeller 3 to rotate at high speed, creating a negative pressure zone within the pump body. This causes the condensate to be drawn in through the inlet 11. The centrifugal force generated by the rotation of the impeller 3 forms a directional water flow, and finally, the condensate is transported to the external drainage pipe through the pipe connected to the drain outlet 12, completing the condensate discharge process.

[0029] At the same time, the water level sensor 5 monitors the liquid level in the drain pump 10 in real time. When the water level sensor 5 detects that the water level exceeds the preset threshold, the water level sensor 5 transmits the collected water level signal to the air conditioning control system. The control system controls the drive motor 2 to start according to the signal command, and drives the impeller 3 to rotate to discharge the condensate in time, thereby ensuring that the liquid level in the condensate tank is always within a safe range and ensuring the stable operation of the overall air conditioning system.

[0030] Based on this, the water level sensor 5 is directly fixed to the outer wall of the pump casing 1 of the drain pump 10 via the bracket 4, realizing the functional integration and structural integration of the drain pump 10 and the water level sensor 5. Compared with the traditional solution where the water level sensor 5 and the drain pump 10 are installed separately, this design significantly reduces the installation space requirements of the water level sensor 5 and the drain pump 10 inside the air conditioner, thereby effectively reducing the overall size of the air conditioner and improving space utilization.

[0031] The bracket 4 adopts a snap-fit ​​structure to form a stable connection with the pump body 1 (such as the interference fit of the buckle and the slot or the locking of the elastic claw), which ensures that the water level sensor 5 maintains a constant and accurate relative position with the condensate liquid surface after installation. This avoids the monitoring error caused by the displacement of the water level sensor 5 in the traditional split installation (such as liquid level detection lag or false triggering), and greatly improves the accuracy and reliability of water level monitoring.

[0032] In addition, the snap-fit ​​connection structure simplifies the installation and removal process of the water level sensor 5. During installation, simply align the bracket 4 with the corresponding slot on the pump housing 1 and press it into place to quickly fix the water level sensor 5. During maintenance or replacement, the bracket 4 and water level sensor 5 can be easily removed by pressing the unlocking part of the snap-fit ​​structure (such as the snap button or unlocking protrusion), without the need for additional tools. The operation is simple and efficient, greatly reducing the difficulty and time cost of maintaining the water level sensor 5.

[0033] In some embodiments, refer to Figure 1 , Figures 4-8 The support 4 includes a vertical frame 41 and a horizontal frame 42.

[0034] A first snap-fit ​​part 411 is provided on one side of the vertical frame 41, and a second snap-fit ​​part 421 is provided at the bottom of the horizontal frame 42. A first receiving buckle 13 is provided on the side of the pump housing 1, and a second receiving buckle 14 is provided on the top surface of the pump housing 1. The first snap-fit ​​part 411 is snapped onto the first receiving buckle 13, and the second snap-fit ​​part 412 is snapped onto the second receiving buckle 14.

[0035] Specifically, the bracket 4 includes a vertical frame 41 and a horizontal frame 42. One side of the vertical frame 41 extends outward to form a first engaging portion 411 (such as an elastic hook or an L-shaped hook). The bottom of the horizontal frame 42 has a downward protruding second engaging portion 421 (such as a buckle or a claw). At the corresponding position on the pump housing 1, the side of the pump housing 1 has a first receiving buckle 13 (such as a groove or a hole) that matches the first engaging portion 411. The top surface of the pump housing 1 has a second receiving buckle 14 (such as a limiting groove or a locking platform) that matches the second engaging portion 421. When the bracket 4 is installed, the first engaging portion 411 of the vertical frame 41 engages vertically into the first receiving buckle 13 on the side of the pump housing 1, while the second engaging portion 421 of the horizontal frame 42 engages horizontally into the second receiving buckle 14 on the top surface of the pump housing 1. The engaging forces in both the horizontal and vertical directions form a bidirectional constraint on the bracket 4.

[0036] The bidirectional snap-fit ​​structure achieves complete positioning of the bracket 4 and the pump housing 1. The cooperation between the first snap-fit ​​part 411 and the first receiving buckle 13 restricts the horizontal displacement of the bracket 4, while the cooperation between the second snap-fit ​​part 421 and the second receiving buckle 14 constrains the vertical movement of the bracket 4. The synergistic effect of the pump housing 1 and the bracket 4 fixes the position of the bracket 4 in three-dimensional space, preventing the water level sensor 5 from loosening or shifting due to the vibration of the air conditioner operation, and ensuring that the mounting base (bracket 4) of the water level sensor 5 and the pump housing 1 form a stable overall structure.

[0037] In summary, on the one hand, the bidirectional snap-fit ​​structure resists external vibrations, impacts, and other external forces, preventing the water level sensor 5 from shifting position (such as tilting or falling off) due to loosening of the bracket 4, thus ensuring the long-term stability of the relative positional accuracy between the probe of the water level sensor 5 and the condensate surface. On the other hand, the snap-fit ​​structure allows for quick assembly without additional screws or tools, and the connection strength after snap-fit ​​is high, capable of withstanding the weight of the water level sensor 5 and minor impacts during daily use, while also ensuring the continuous accuracy of the monitoring signal from the water level sensor 5. In some embodiments, refer to Figures 6-10 One of the first snap-fit ​​part 411 and the first receiving buckle 13 is provided with a vertical insert rib 131, and the other is provided with a vertical slot 4111. The first snap-fit ​​part 411 is inserted into the first receiving buckle 13 from above.

[0038] In other words, when the first snap-fit ​​portion 411 is provided with a vertical insert rib 131, the first bearing buckle 13 is provided with a vertical slot 4111; when the first snap-fit ​​portion 411 is provided with a vertical slot 4111, the first bearing buckle 13 is provided with a corresponding vertical insert rib 131. The positions of the two structures, the vertical slot 4111 and the vertical insert rib 131, are not limited, but for ease of understanding, the following description assumes that the vertical slot 4111 is located in the first snap-fit ​​portion 411 and the vertical insert rib 131 is located in the first bearing buckle 13.

[0039] When the first snap-fit ​​part 411 and the first receiving buckle 13 are installed, the first snap-fit ​​part 411 is inserted vertically into the first receiving interface 13 from above. The vertical insertion rib 131 and the vertical slot 4111 work together to achieve guiding alignment and longitudinal limiting. The complementary concave-convex design of the vertical slot 4111 and the vertical insertion rib 131 ensures that the first snap-fit ​​part 411 can only be inserted into the first receiving buckle 13 in a predetermined vertical direction, preventing snap-fit ​​failure. When the first snap-fit ​​part 411 is inserted into the first receiving buckle 13 from top to bottom, the vertical insertion rib 131 embeds into the vertical slot 4111, forming a height-direction anti-dislodgement constraint, while simultaneously limiting the vertical movement of the bracket 4.

[0040] In some embodiments, refer to Figures 6-10 The first snap-fit ​​portion 411 includes two spaced vertical plates 4112, each forming a vertical slot 4111 on the side facing each other. The first receiving buckle 13 includes two spaced vertical ribs 132, each forming a vertical insert rib 131 on the side away from each other.

[0041] The first latching part 411 is composed of two spaced-apart vertical plates 4112, and the inner sides of the two vertical plates 4112 opposite to each other form a vertical slot 4111; correspondingly, as Figures 7-10 As shown, the first receiving buckle 13 includes two spaced vertical ribs 132, which form vertical inserts 131 that match the vertical slots 4111. During installation, the two vertical ribs 132 are respectively inserted into the vertical slots 4111 formed by the two vertical plates 4112. The vertical inserts 131 and the vertical slots 4111 are matched with each other to achieve precise alignment and longitudinal positioning. This not only ensures a stable connection between the first snap-fit ​​part 411 and the first receiving buckle 13 in the vertical direction, but also enhances the overall torsional resistance through the symmetrical insertion structure on both sides. This effectively prevents the bracket 4 from tilting or loosening on the pump housing 1, achieving a firm and reliable assembly effect.

[0042] In some embodiments, refer to Figure 11 The second receiving buckle 14 includes a boss 141 and a slot 142.

[0043] like Figure 3 , Figure 11 As shown, a boss 141 is formed on the top of the pump housing 1, and two slots 142 are formed on opposite sides of the boss 141. Figure 6 As shown, the second latching part 421 includes a horizontal connecting plate 4211 and latching claws 4212. There are two latching claws 4212, which are connected to both ends of the horizontal connecting plate 4211, and each latching claw 4212 is inserted into a corresponding latching slot 142.

[0044] When the second receiving buckle 14 and the second locking part 421 are assembled, the bracket 4 moves toward the second receiving buckle 14, and the two side claws 4212 are respectively inserted into the two side slots 142. At the same time, the horizontal connecting plate 4211 slides and fits against the top surface of the boss 141. The horizontal limiting and vertical support of the bracket 4 are achieved through the locking and engagement of the claws 4212 and the slots 142. Through the positioning surface of the boss 141 and the constraint effect of the two side slots 142, the connection between the second locking part 421 and the top of the pump housing 1 is ensured to be stable. After the two side claws 4212 are simultaneously inserted into the corresponding slots 142, the horizontal movement of the bracket 4 is restricted. The vertical engagement of the claws 4212 and the slots 142 provides upward support force. Even in the environment of air conditioner operation vibration, the bracket 4 can be kept stably connected, ensuring that the bracket 4 and the pump housing 1 form a reliable integral structure.

[0045] In some embodiments, refer to Figure 6 The bracket 4 also includes: a column 43 connected to the bottom of the vertical frame 41, and a water level sensor 5 sleeve connected to the column 43.

[0046] Furthermore, a column 43 extends from the bottom of the vertical frame 41 of the bracket 4. The water level sensor 5 is fitted onto the outside of the column 43 through a built-in fixing structure. Based on the stable connection formed by the bidirectional snap-fit ​​structure between the bracket 4 and the pump housing 1, the water level sensor 5 can also be accurately positioned in the correct position, ensuring a constant relative positional relationship with the condensate liquid surface, thereby correctly feeding back the water level signal to the air conditioning control system. In addition, the water level sensor 5 is detachably fitted onto the outside of the column 43. This design not only ensures the stability of the water level sensor 5 during operation, but also allows for quick disassembly and assembly during equipment maintenance, whether it is due to a fault requiring replacement of the water level sensor 5 or for repair, simply by removing the fixing structure between the water level sensor 5 and the bracket 4, thus improving maintenance convenience and repair efficiency.

[0047] In some embodiments, refer to Figures 1-3 Pump housing 1 includes: middle pump housing 15, upper pump housing 16 and lower pump housing 17.

[0048] The upper and lower ends of the intermediate pump housing 15 are open, and the drive motor 2 and impeller 3 are installed inside the intermediate pump housing 15; the upper pump housing 16 is connected to the top of the intermediate pump housing 15; and the lower pump housing 17 is connected to the bottom of the intermediate pump housing 15.

[0049] The pump casing 1 adopts a split structure design with upper, middle, and lower sections. The middle pump casing 15 is a hollow cylindrical structure with both ends open, forming a pump cavity inside. The drive motor 2 and impeller 3 are both installed inside the pump cavity. The drive motor 2 can be mounted on the inner wall of the middle pump casing 15 via a mounting bracket (not shown in the figure). The motor shaft 21 of the drive motor 2 is coaxially connected to the impeller 3, which is located at the lower part of the pump cavity near the inlet 11. The upper pump casing 16 and the middle pump casing 15 are fixed by a snap-fit ​​structure. For example, the outer wall of the upper pump casing 16 has a protrusion, and the outer wall of the middle pump casing 15 has a snap-fit, or the outer wall of the upper pump casing 16 has a snap-fit, and the outer wall of the middle pump casing 15 has a protrusion; or one of the middle pump casing 15 and the upper pump casing 16 has an external thread, and the other has a matching internal thread, which is fixed by threaded connection; or a heat fusion connection is used. The specific fixing type is not limited. The lower pump casing 17 can also be fixed to the bottom opening of the middle pump casing 15 by a snap-fit ​​structure, which is used to seal the lower part of the pump chamber and form a condensate inlet channel to ensure that condensate flows from the inlet 11 into the absorption area of ​​the direct guide impeller 3.

[0050] In some specific embodiments, such as Figure 1 , Figures 8-10 As shown, the upper end of the middle pump housing 15 has two protrusions, and the upper pump housing 16 has matching buckles at corresponding positions. The two are connected by the buckles engaging with the protrusions; the lower end of the middle pump housing 15 has three protrusions, such as... Figures 16-19 As shown, the lower pump housing 17 has a matching buckle at a corresponding position, and the two are connected by the buckle and the protrusion. Through the above-mentioned snap-fit ​​structure, the upper pump housing 16, the middle pump housing 15 and the lower pump housing 17 are connected to each other and combined into an integral pump housing 1 structure.

[0051] In some embodiments, refer to Figures 12-14 The pump casing 1 also includes: a drain pipe 18 disposed on the side of the middle pump casing 15, the opening of the drain pipe 18 forming a drain outlet 12, a fixing plate 19 disposed on the drain pipe 18, and a connecting piece 20 for communication control, the connecting piece 20 being disposed on the fixing plate 19.

[0052] The intermediate pump housing 15 is fixed to the fixing plate 19 by a connecting piece 20. A drain pipe 18 is provided on the side away from the intermediate pump housing 15 and closer to the fixing plate 19. Condensate is discharged from the intermediate pump housing 15 to the drain outlet 12 of the drain pipe 18. The connecting piece 20 is a component used for electrical connection and signal transmission, and is usually fixed to the intermediate pump housing 15 by fasteners. The connecting piece 20 acts as a conductor, connecting the water level sensor 5 to the circuit in the air conditioning control system to form a complete electrical loop. After the water level sensor 5 converts the detected water level signal into an electrical signal, it transmits the electrical signal to the corresponding circuit in the air conditioning control system through the connecting piece 20. The air conditioning control system determines whether the water level has reached the set threshold based on the received signal and makes corresponding control decisions, such as starting or stopping the drain pump 10.

[0053] In some embodiments, refer to Figure 12 , Figure 15 The pump housing 1 also includes a buffer adhesive layer 22 disposed on the fixed plate 19.

[0054] Generally, the fixing plate 19 is connected and fixed to other external components (such as air conditioner casing mounting plate or support bracket, etc.), and a buffer rubber layer 22 is provided between the two. The buffer rubber layer 22 is made of highly elastic and durable rubber or silicone material, and is tightly attached to the mounting position by vulcanization or adhesive bonding. When the drain pump 10 is running, the buffer rubber layer 22 can absorb mechanical vibration energy through its own elastic deformation, thereby reducing the noise generated by the drain pump 10.

[0055] The air conditioner according to the embodiments of this utility model, such as Figures 1-3 As shown, it includes: the drainage pump 10 of any of the above embodiments.

[0056] The drainage pump 10 integrates the water level sensor 5 and the pump housing 1 through a bracket 4, forming a highly integrated structure. This significantly reduces the independent installation space required for the water level sensor 5 inside the air conditioner, thereby effectively reducing the overall size of the air conditioner and improving space utilization. In addition, the water level sensor 5 is easy to install, provides accurate monitoring, and is easy to disassemble and maintain quickly. This design improves the overall drainage reliability and operational stability of the air conditioner.

[0057] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A drainage pump, characterized in that, include: A pump casing, wherein the pump casing is provided with an inlet and a outlet; A drive motor is disposed inside the pump housing; An impeller is located inside the pump casing and connected to the motor shaft of the drive motor. The impeller is situated within the flow path from the inlet to the outlet. The bracket is snap-fitted onto the pump housing; A water level sensor is mounted on the bracket.

2. The drainage pump according to claim 1, characterized in that, The support includes: A vertical frame, wherein a first locking part is provided on one side of the vertical frame; A crossbar, the bottom of which is provided with a second snap-fit ​​part; The pump casing has a first receiving buckle on its side and a second receiving buckle on its top surface. The first snap-fit ​​part snaps onto the first receiving buckle, and the second snap-fit ​​part snaps onto the second receiving buckle.

3. The drainage pump according to claim 2, characterized in that, One of the first snap-fit ​​part and the first receiving buckle is provided with a vertical insert rib, and the other is provided with a vertical slot. The first snap-fit ​​part is inserted into the first receiving buckle from above.

4. The drainage pump according to claim 3, characterized in that, The first snap-fit ​​portion includes: two spaced vertical plates, the two vertical plates forming the vertical slots on their respective sides facing each other; The first receiving buckle includes two spaced vertical ribs, the two vertical ribs forming the vertical inserts on the side away from each other.

5. The drainage pump according to claim 2, characterized in that, The second receiving buckle includes: A boss is formed on the top of the pump housing; The slots are two in number and are formed on opposite sides of the boss; The second snap-fit ​​portion includes: Horizontal connecting plate; The clamping claws are two in number and are connected to both ends of the horizontal connecting plate, with each clamping claw inserted into a corresponding slot.

6. The drainage pump according to claim 2, characterized in that, The bracket also includes: a column connected to the bottom of the vertical frame, and the water level sensor is sleeved and connected to the column.

7. The drainage pump according to any one of claims 1-6, characterized in that, The pump housing includes: The pump housing has open upper and lower ends, and the drive motor and the impeller are both installed inside the pump housing. Upper pump housing, which is connected to the top of the middle pump housing; The lower pump housing is connected to the bottom of the middle pump housing.

8. The drainage pump according to claim 7, characterized in that, The pump housing also includes: A drain pipe is provided on the side of the pump casing, and the opening of the drain pipe constitutes the drain outlet. A fixing plate is installed on the drain pipe; A connecting piece for communication control is provided on the fixed plate.

9. The drainage pump according to claim 8, characterized in that, The pump housing also includes a buffer adhesive layer disposed on the fixed plate.

10. An air conditioner, characterized in that, include: The drainage pump according to any one of claims 1-9.

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