Vertical centrifugal pump and air conditioner with same

Abstract

The utility model discloses a vertical centrifugal pump and an air conditioner with the same, the vertical centrifugal pump comprises a pump body, a pump cover and an impeller, the pump body comprises a pump shell and a driving shaft, and the driving shaft extends downwards from the lower end of the pump shell; the pump cover is arranged at the bottom of the pump body, a cavity is formed between the pump cover and the pump shell, a water inlet and a water outlet which are communicated with the cavity are formed in the pump cover, the water inlet is located in the lower end of the pump cover, and the water outlet is located in the side of the pump cover and higher than the water inlet. The impeller is arranged in the cavity and is connected with the driving shaft extending into the cavity; an exhaust hole is further formed in the pump cover, and the exhaust hole is communicated with the cavity and higher than the water inlet. The exhaust hole is formed in the pump cover, air in the cavity can be exhausted from the exhaust hole, liquid at the bottom of the vertical centrifugal pump can smoothly enter the cavity, and water pumping is completed, so that the problem that the vertical centrifugal pump idles due to the fact that air exists in the cavity can be solved, the situation that an impeller or a driving shaft is damaged due to long-time idling of the impeller can be improved, and the service life of the vertical centrifugal pump is prolonged. And the working reliability is improved.

Description

Technical Field

[0001] The utility model relates to the field of air-conditioning equipment, in particular to a vertical centrifugal pump and an air conditioner having the same. Background Art

[0002] Centrifugal pumps are often used in air conditioners to operate and remove condensate. Due to the trend of miniaturization of household appliances, centrifugal pumps used in air conditioners are usually installed vertically inside the whole machine.

[0003] In the related art, vertical centrifugal pumps have the problem of exhausting the internal cavity. When there is air in the internal cavity, liquid cannot enter the internal cavity, causing the vertical centrifugal pump to freeze and fail to smoothly realize the pumping operation function. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a vertical centrifugal pump and an air conditioner having the same, which can solve the problem of idling of the vertical centrifugal pump due to air in the cavity, thereby improving working reliability.

[0005] The utility model also provides an air conditioner with the vertical centrifugal pump.

[0006] A vertical centrifugal pump according to the first aspect of the present invention includes: a pump body, the pump body including a pump casing and a drive shaft, the drive shaft extending downward from the lower end of the pump casing; a pump cover, the pump cover is arranged at the bottom of the pump body, and a cavity is formed between the pump cover and the pump casing, a water inlet and a drain port connected to the cavity are formed on the pump cover, the water inlet is located at the lower end of the pump cover, and the drain port is located on the side of the pump cover and is higher than the water inlet; an impeller, the impeller is arranged in the cavity and connected to the drive shaft extending into the cavity; wherein an exhaust hole is also formed on the pump cover, the exhaust hole is connected to the cavity and is higher than the water inlet.

[0007] According to the vertical centrifugal pump of the present invention, by forming an exhaust hole on the pump cover, the air in the cavity can be discharged from the exhaust hole, and the liquid at the bottom of the vertical centrifugal pump can smoothly enter the cavity and be discharged from the drain port under the drive of the impeller to complete the water pumping, thereby solving the problem of the vertical centrifugal pump idling due to the presence of air in the cavity, and also improving the situation where the impeller idles for a long time and cannot contact the liquid for heat dissipation, causing the impeller or the drive shaft to be damaged, which is conducive to improving the working reliability of the vertical centrifugal pump.

[0008] In some embodiments, the exhaust hole is lower than the upper end of the drain outlet; and / or the aperture of the exhaust hole is smaller than the flow area of ​​the drain outlet.

[0009] In some embodiments, the pump cover includes a water inlet section and a volute section, the water inlet section is connected to the bottom of the volute, the water inlet is formed at the lower end of the water inlet section, the side of the volute section extends out a diffusion section, the outlet end of the diffusion section is formed as the drain port, and the exhaust hole is formed on the volute section or at the upper end of the water inlet section.

[0010] In some embodiments, the exhaust hole is formed on a side of the volute section and is located on a side of the diffuser section close to a volute tongue of the volute section.

[0011] In some embodiments, a central angle between the exhaust hole and the diffuser section is less than 90°.

[0012] In some embodiments, the exhaust holes are multiple and spaced apart along the circumference of the volute segment.

[0013] In some embodiments, the exhaust hole is located at a lower portion of a side of the volute section.

[0014] In some embodiments, the water inlet section is formed into a cylindrical shape, and the diameter of the water inlet section is smaller than the diameter of the volute section. The impeller includes a first impeller and a second impeller. The first impeller is connected above the second impeller and is located in the volute section. At least a portion of the second impeller is arranged in the water inlet section. The diameter of the first impeller is larger than the diameter of the second impeller.

[0015] In some embodiments, the pump cover includes a water inlet section and a volute section, the water inlet section is connected to the bottom of the volute section, the impeller includes a first impeller and a second impeller, the first impeller is connected above the second impeller and is located in the volute section, at least a portion of the second impeller is arranged in the water inlet section, and the diameter of the first impeller is larger than the diameter of the second impeller.

[0016] In some embodiments, the second impeller includes a plurality of second blades spaced apart along a circumferential direction of the drive shaft, and the second blades are formed as inclined blades extending from bottom to top at an angle to a vertical direction.

[0017] In some embodiments, the upper end of the second blade extends into the volute section.

[0018] In some embodiments, the first impeller includes a plurality of first blades arranged at intervals along the circumference of the drive shaft, and the second impeller includes a plurality of second blades arranged at intervals along the circumference of the drive shaft, and the height of the first blades in the up-down direction is smaller than the height of the second blades in the up-down direction.

[0019] In some embodiments, the water inlet section is formed in a cylindrical shape, and the diameter of the water inlet section is smaller than the diameter of the volute section. The water inlet is formed at the lower end of the water inlet section, and the drain outlet is provided on the side of the volute section.

[0020] The air conditioner according to the second aspect of the present invention includes: a condensed water treatment system, which includes: a water receiving tray, a drainage pipeline and a vertical centrifugal pump according to the first aspect of the present invention, the vertical centrifugal pump is vertically arranged on the water receiving tray, the water inlet is located at the lower end of the vertical centrifugal pump and is located in the water holding cavity of the water receiving tray, and the drainage outlet is connected to the water inlet end of the drainage pipeline.

[0021] According to an embodiment of the present invention, the installation of the vertical centrifugal pump according to the first aspect of the present invention reduces the space occupied by the water tray compared to a horizontal centrifugal pump, thereby simplifying the layout of the condensate treatment system and facilitating an increase in the water capacity of the water tray. Furthermore, the installation of the vertical centrifugal pump according to the first aspect of the present invention solves the problem of exhausting the internal cavity of the vertical centrifugal pump, enabling smooth water pumping operation, improving the reliability of the condensate treatment system, and enhancing the performance of the air conditioner.

[0022] In some embodiments, the air conditioner is a window unit, and the condensate water treatment system further includes a spray head, and the water outlet end of the drainage pipe is connected to the spray head.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a vertical centrifugal pump according to one embodiment of the present utility model;

[0025] Figure 2 This is an exploded view of the structure of a vertical centrifugal pump according to one embodiment of the present utility model;

[0026] Figure 3 is another structural exploded view of a vertical centrifugal pump according to one embodiment of the present utility model;

[0027] Figure 4 This is a schematic structural diagram of a pump cover according to an embodiment of the present utility model;

[0028] Figure 5 This is a schematic structural diagram of a pump cover according to an embodiment of the present invention from another angle;

[0029] Figure 6is a cross-sectional view of a vertical centrifugal pump according to one embodiment of the present utility model;

[0030] Figure 7 This is a side view of a pump cover according to one embodiment of the present invention;

[0031] Figure 8 is based on Figure 7 AA section of the example shown;

[0032] Figure 9 This is a schematic structural diagram of an impeller according to an embodiment of the present utility model;

[0033] Figure 10 This is a schematic structural diagram of an impeller according to an embodiment of the present invention from another angle;

[0034] Figure 11 is based on Figure 6 A partial enlarged view of area B of the example shown;

[0035] Figure 12 It is a partial structural diagram of an air conditioner according to an embodiment of the utility model.

[0036] Reference numerals:

[0037] Vertical centrifugal pump 100;

[0038] Pump body 1; pump housing 11; drive shaft 12;

[0039] Pump cover 2; cavity 2a; water inlet section 2b; volute section 2c; diffuser section 2c1; water inlet 21; drain outlet 22; exhaust hole 23;

[0040] Impeller 3; first impeller 31; first blade 311; second impeller 32; second blade 321; impeller hole 33;

[0041] Threaded fixing 4;

[0042] Water receiving tray 200; water receiving chamber 201;

[0043] Base 300. DETAILED DESCRIPTION

[0044] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0046] A vertical centrifugal pump 100 according to a first embodiment of the present invention will be described below with reference to the accompanying drawings.

[0047] According to the vertical centrifugal pump 100 of the embodiment of the present invention, Figure 1-Figure 3 As shown, the vertical centrifugal pump 100 includes: a pump body 1, a pump cover 2 and an impeller 3. The pump body 1 includes a pump casing 11 and a drive shaft 12. The drive shaft 12 extends downward from the lower end of the pump casing 11. The pump cover 2 is arranged at the bottom of the pump body 1 and forms a cavity 2a between the pump cover 2 and the pump casing 11. A water inlet 21 and a drain port 22 connected to the cavity 2a are formed on the pump cover 2. The water inlet 21 is located at the lower end of the pump cover 2, and the drain port 22 is located on the side of the pump cover 2 and is higher than the water inlet 21. The impeller 3 is arranged in the cavity 2a and is connected to the drive shaft 12 extending into the cavity 2a. The pump cover 2 also has an exhaust hole 23 formed thereon. The exhaust hole 23 is connected to the cavity 2a and is higher than the water inlet 21. The vertical refers to that the drive shaft 12 extends in the up and down direction and can be absolutely vertical or slightly inclined to the vertical direction.

[0048] The pump body 1 and the pump cover 2 are the main parts of the vertical centrifugal pump 100, which protect the internal components. The drive shaft 12 extends downward from the lower end of the pump casing 11 to the cavity 2a of the pump cover 2 at the lower end of the pump body 1. The drive shaft 12 is connected to the impeller 3 in the cavity 2a. The drive shaft 12 is connected to the power component to drive the impeller 3 to rotate.

[0049] The vertical centrifugal pump 100 is positioned vertically and is used to pump liquid from the bottom of the pump through the water inlet 21 into the cavity 2a, and then discharge it through the drain port 22. When the impeller 3 rotates, the centrifugal force generated by the impeller 3 pumps the liquid upward through the water inlet 21 into the cavity 2a. The water pressure generated by the rotation of the impeller 3 within the cavity 2a is then used to discharge the liquid inside the cavity 2a through the drain port 22 on the side of the pump cover 2. For example, a drainage pipe is connected to the drain port 22, allowing the liquid to be discharged from the bottom of the vertical centrifugal pump 100 to another location.

[0050] In the related art, when a vertical centrifugal pump stops running, the water level at the bottom of the vertical centrifugal pump is not high or for other reasons, air will enter the cavity from the water inlet. At the same time, due to water in the pipe connected to the drain outlet, a liquid seal or other form of seal is formed at the drain outlet. As a result, when the vertical centrifugal pump starts running again, the working medium in the cavity is air, and the air cannot be discharged from the drain outlet or the water inlet. The pressure generated by the impeller rotating inside the cavity to compress the air is not enough to overcome the sealing pressure at the drain outlet, and the pressure difference between the inside and outside of the cavity is not enough to press the liquid into the cavity, causing the vertical centrifugal pump to run idle, unable to take in liquid from the water inlet or discharge liquid from the drain outlet. In addition, long-term idling of the impeller will also cause damage to the drive shaft or impeller.

[0051] Therefore, the vertical centrifugal pump 100 of the present invention is formed with an exhaust hole 23 on the pump cover 2. The exhaust hole 23 is located above the water inlet 21 and is connected to the cavity 2a. When there is air in the cavity 2a of the vertical centrifugal pump 100 of the present invention, the vertical centrifugal pump 100 is in operation. The pressure generated by the rotation of the impeller 3 in the cavity 2a compresses the air and drives the air out of the exhaust hole 23, thereby forcing liquid into the cavity 2a. Subsequently, the water pressure generated by the rotation of the impeller 3 in the cavity 2a can be used to discharge the liquid in the cavity 2a through the drain port 22 on the side of the pump cover 2, thus successfully completing the pumping process. This can solve the problem of the vertical centrifugal pump 100 idling and not pumping water due to the presence of air in the cavity 2a, and can also improve the problem of the impeller 3 idling for a long time and being unable to contact the liquid to dissipate heat, which may cause damage to the impeller 3 or the drive shaft 12. This is conducive to extending the service life of the vertical centrifugal pump 100 and improving the working reliability of the vertical centrifugal pump 100.

[0052] Furthermore, the utility model forms the exhaust hole 23 on the pump cover 2 , which reduces the difficulty of modifying the vertical centrifugal pump 100 , reduces the structural complexity of the vertical centrifugal pump 100 , and helps save manufacturing costs.

[0053] According to the vertical centrifugal pump 100 of the embodiment of the present invention, the exhaust hole 23 is formed on the pump cover 2, so that the air in the cavity 2a can be discharged from the exhaust hole 23, and the liquid at the bottom of the vertical centrifugal pump 100 can smoothly enter the cavity 2a and be discharged from the drain port 22 under the drive of the impeller 3 to complete the water pumping. This can solve the problem of the vertical centrifugal pump 100 idling due to the presence of air in the cavity 2a, and can also improve the situation where the impeller 3 idles for a long time and cannot contact the liquid for heat dissipation, which may cause damage to the impeller 3 or the drive shaft 12, thereby improving the working reliability of the vertical centrifugal pump 100.

[0054] In some embodiments of the present invention, Figure 2 and Figure 3As shown, the pump body 1 and the pump cover 2 are fixedly connected by a plurality of threaded fixings 4 , and the plurality of threaded fixings 4 are arranged at intervals along the circumference of the pump body 1 , which can improve the connection stability between the pump body 1 and the pump cover 2 .

[0055] In some embodiments of the present invention, Figure 3 As shown, the upper surface of the impeller 3 defines a downwardly extending impeller hole 33, into which the drive shaft 12 is inserted, thereby driving the impeller 3 to rotate. The impeller hole 33 is non-circular, and the cross-sectional shape of the drive shaft 12 corresponds to the impeller hole 33, thereby enhancing the connection stability between the drive shaft 12 and the impeller 3 and improving the rotational reliability of the impeller 3. Alternatively, the drive shaft 12 and the impeller 3 may be keyed to achieve transmission.

[0056] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, the exhaust hole 23 is lower than the upper end of the drain port 22 .

[0057] In the horizontal water pump in the related technology (horizontal means that the drive shaft extends in the horizontal direction, which can be absolutely horizontal or slightly inclined to the horizontal direction), the exhaust hole is set higher than the upper end of the drain outlet. Since the density of air is less than the density of water, it is located above the water surface. After the liquid enters the cavity and the air is discharged from the exhaust hole, the exhaust hole is located at a higher position, so the liquid flows out directly from the drain outlet, which will cause air to always remain in the cavity, affecting the normal operation of the vertical centrifugal pump, and the abnormal noise generated by the flow of liquid in the cavity is relatively large.

[0058] In the vertical centrifugal pump 100 of the embodiment of the present invention, the exhaust hole 23 is arranged lower than the upper end of the drain port 22. Liquid enters the cavity 2a and air is discharged from the exhaust hole 23. The liquid level can be higher than the exhaust hole 23 and reach the drain port 22, so that the liquid can be discharged from the drain port 22. This can improve the working reliability of the vertical centrifugal pump 100 and reduce the noise during operation of the vertical centrifugal pump 100.

[0059] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, the diameter of the air vent 23 is smaller than the flow area of ​​the drain port 22 .

[0060] The small diameter of the vent hole 23 allows for smooth exhaust of air within the cavity 2a without causing a large outflow of liquid from the vent hole 23. Liquid primarily flows out through the drainage holes, which have a larger flow area, thereby improving the pumping stability of the vertical centrifugal pump 100. Furthermore, by setting the diameter of the vent hole 23 to be small, the structural stability of the pump cover 2 is ensured, further improving the operational reliability of the vertical centrifugal pump 100.

[0061] In some embodiments of the present invention, Figure 4 and Figure 5 As shown, the pump cover 2 includes a water inlet section 2b and a volute section 2c. The water inlet section 2b is connected to the bottom of the volute section 2c. A water inlet 21 is formed at the lower end of the water inlet section 2b. A diffuser section 2c1 extends from the side of the volute section 2c. The outlet end of the diffuser section 2c1 forms a water outlet 22. An exhaust hole 23 is formed on the volute section 2c or at the upper end of the water inlet section 2b. This allows the exhaust hole 23 to be closer to the drainage position, facilitating exhaust and allowing water to be discharged smoothly.

[0062] For example, Figure 4 and Figure 5 As shown, the pump cover 2 includes a water inlet section 2b and a volute section 2c. The water inlet section 2b is formed in a cylindrical shape, and the diameter of the water inlet section 2b is smaller than the diameter of the volute section 2c. The axes of the volute section 2c and the water inlet section 2b extend vertically. The water inlet section 2b is connected to the bottom of the volute section 2c, and the water inlet port 21 is formed at the lower end of the water inlet section 2b. A diffusion section 2c1 extends from the side of the volute section 2c, and the outlet end of the diffusion section 2c1 is formed as a drain port 22.

[0063] The water inlet section 2b is located at the bottom of the volute section 2c. A water inlet 21 is formed at the lower end of the water inlet section 2b, and a water outlet 22 is formed on the side of the volute section 2c. Therefore, the rotation of the impeller 3 generates water pressure, causing the liquid to quickly rise through the water inlet section 2b to the volute section 2c. Subsequently, driven by the impeller 3, the liquid rotates within the volute section 2c and is discharged from the water outlet 22. The smaller diameter of the water inlet section 2b than that of the volute section 2c accelerates the process of liquid rising to the volute section 2c, thereby improving the operating efficiency of the vertical centrifugal pump 100. The provision of the volute section 2c allows the liquid to flow evenly and symmetrically to the water outlet 22 with minimal hydraulic losses, thereby improving the operating efficiency of the impeller 3 and effectively utilizing hydraulic resources.

[0064] like Figure 2 and Figure 6 As shown, the impeller 3 includes a first impeller 31 and a second impeller 32. The first impeller 31 is connected above the second impeller 32. The diameter of the first impeller 31 is larger than the diameter of the second impeller 32. The first impeller 31 is arranged in the volute section 2c, and at least part of the second impeller 32 is arranged in the water inlet section 2b. The exhaust hole 23 is formed on the volute section 2c or at the upper end of the water inlet section 2b.

[0065] The first impeller 31 is disposed in the volute section 2c, and the second impeller 32 is at least partially disposed in the water inlet section 2b. Therefore, the diameter of the first impeller 31 is greater than the diameter of the second impeller 32. The first impeller 31 can generate a greater pressure than the second impeller 32, so that the water discharged from the drain outlet 22 has a greater head. The structure of the impeller 3 and the structure of the pump cover 2 are well matched, which can improve the pumping effect of the vertical centrifugal pump 100.

[0066] The exhaust hole 23 is formed on the volute section 2c or at the upper end of the water inlet section 2b, so that the air in the cavity 2a can be discharged as much as possible so that the liquid can smoothly enter the volute section 2c and contact the impeller 3, so that the liquid can form water pressure under the drive of the impeller 3, so that the liquid can flow smoothly from the water inlet 21 to the drain outlet 22, thereby improving the working reliability of the vertical centrifugal pump 100.

[0067] In some embodiments of the present invention, Figure 4 and Figure 8 As shown, the exhaust hole 23 is formed on the side of the volute section 2c and is located on the side of the divergent section 2c1 close to the volute tongue of the volute section 2c.

[0068] The exhaust hole 23 is provided on the volute section 2c, allowing air in the cavity 2a to be discharged until the liquid can smoothly enter the volute section 2c and contact the impeller 3. By forming the exhaust hole 23 near the diffuser section 2c1 of the volute section 2c, the liquid flows toward the drain port 22 while the air is quickly discharged, thereby improving the exhaust efficiency of the vertical centrifugal pump 100.

[0069] By arranging the exhaust hole 23 on the side of the diffuser section 2c1 near the volute tongue of the volute section 2c, the air discharge speed in the cavity 2a can be increased. Furthermore, arranging the exhaust hole 23 near the volute tongue also helps reduce the airflow noise during air discharge, effectively reducing the exhaust noise.

[0070] In some embodiments of the present invention, the central angle between the exhaust hole 23 and the diffuser section 2c1 is less than 90°, wherein a line connecting the edge of the exhaust hole 23 on the circumference of the volute section 2c close to the diffuser section 2c1 and the center of the volute section 2c is a first line, and a line connecting the edge of the diffuser section 2c1 on the circumference of the volute section 2c close to the exhaust hole 23 and the center of the volute section 2c is a second line, and the angle between the first line and the second line is the central angle between the exhaust hole 23 and the diffuser section 2c1.

[0071] The exhaust hole 23 is provided near the diffuser section 2c1 of the volute section 2c. When the liquid flows toward the drain port 22 of the diffuser section 2c1, the air can be driven to flow toward the exhaust hole 23, thereby accelerating the rapid discharge of the air and improving the working reliability of the vertical centrifugal pump 100.

[0072] In some embodiments of the present invention, there are multiple exhaust holes 23 and they are spaced apart along the circumference of the volute section 2c. The multiple exhaust holes 23 can increase the exhaust speed of air, which is beneficial to improving the working efficiency of the vertical centrifugal pump 100.

[0073] In some embodiments of the present invention, Figure 4 and Figure 8 As shown, the exhaust hole 23 is located at a lower portion of the side of the volute section 2c.

[0074] By positioning the exhaust hole 23 at the lower portion of the side of the volute section 2c, the exhaust hole 23 is positioned lower than the drain port 22 on the side of the volute section 2c. Liquid entering the cavity 2a and reaching a level above the exhaust hole 23 can continue to flow upward and be discharged from the drain port 22. This improves the operating reliability of the vertical centrifugal pump 100 and reduces noise during operation.

[0075] In some embodiments of the present invention, Figure 9 and Figure 10 As shown, the pump cover 2 includes a water inlet section 2b and a volute section 2c, the water inlet section 2b is connected to the bottom of the volute section 2c, the impeller 3 includes a first impeller 31 and a second impeller 32, the first impeller 31 is connected above the second impeller 32 and is located in the volute section 2c, at least part of the second impeller 32 is arranged in the water inlet section 2b, and the diameter of the first impeller 31 is larger than the diameter of the second impeller 32.

[0076] The first impeller 31 can generate a greater pressure than the second impeller 32 , so that the water discharged from the water outlet 22 has a greater lift.

[0077] In some embodiments, the second impeller 32 includes a plurality of second blades 321 spaced apart along the circumference of the drive shaft 12 . The second blades 321 are formed as inclined blades extending from bottom to top at an angle to the vertical direction.

[0078] The second impeller 32 is at least partially disposed in the water inlet section 2b, and the first impeller 31 is disposed in the volute section 2c. The second impeller 32 is used to quickly deliver water at the bottom of the vertical centrifugal pump 100 into the volute section 2c through the water inlet section 2b. Therefore, the embodiment of the utility model sets the second blade 321 as an inclined blade extending from bottom to top in an inclined direction, which can improve the ability of the second impeller 32 to guide water upward, improve the efficiency of water flowing from the water inlet section 2b into the volute section 2c, and further improve the water pumping capacity of the vertical centrifugal pump 100.

[0079] like Figure 9 As shown, the dotted line with the dotted arrow represents the direction of force acting on the liquid when the second impeller 32 rotates. Fcentrifugal is the centrifugal force generated by the second impeller 32 driving the liquid. The inclined blade design directs the driving force in an obliquely upward direction, as indicated by Fdrive in the figure, ultimately increasing the upward lift force on the liquid, i.e., Frise in the figure. The inclined blade design of the second impeller 32 can increase the vertically upward lift force on the liquid, thereby increasing the vertically upward liquid pressure, thereby facilitating an increase in the suction operating pressure of the vertical centrifugal pump 100.

[0080] In some embodiments of the present invention, the first impeller 31 includes a plurality of first blades 311 spaced apart along the circumference of the drive shaft 12 . The first blades 311 are also formed as inclined blades extending from bottom to top in an inclined direction relative to the vertical direction.

[0081] The second blades 321 and the first blades 311 are both inclined blades extending from bottom to top in an inclined direction relative to the vertical direction, which can further enhance the vertical upward liquid lift and the upward water guiding capacity of the impeller 3, thereby improving the working efficiency of the vertical centrifugal pump 100.

[0082] In some embodiments of the present invention, Figure 11 As shown, the upper end of the second blade 321 extends into the volute section 2c.

[0083] The second impeller 32 is used to quickly deliver the water at the bottom of the vertical centrifugal pump 100 through the water inlet section 2b into the volute section 2c. The upper end of the second blade 321 of the second impeller 32 extends into the volute section 2c, so that the second impeller 32 can quickly connect the pressure to the volute section 2c after introducing the water flow from the water inlet 21, forming a continuous working medium operation and improving the pumping efficiency. Figure 6 and Figure 11 As shown, the dotted line with an arrow is the schematic direction of liquid flow.

[0084] In some embodiments of the present invention, Figure 9 and Figure 10 As shown, the first impeller 31 includes a plurality of first blades 311 arranged at circumferential intervals along the drive shaft 12, and the second impeller 32 includes a plurality of second blades 321 arranged at circumferential intervals along the drive shaft 12, and the height of the first blades 311 in the up and down direction is less than the height of the second blades 321 in the up and down direction.

[0085] The second impeller 32 is used to quickly deliver water at the bottom of the vertical centrifugal pump 100 through the water inlet section 2b into the volute section 2c. The first impeller 31 rotates and swirls the water to generate water pressure, which discharges the liquid in the cavity 2a to the drain port 22. Therefore, the second blades 321 are relatively high in the vertical direction, which helps to guide the liquid upward. The first blades 311 are relatively low in the vertical direction, which can reduce the overall height of the impeller 3 and the center of gravity of the vertical centrifugal pump 100, which helps to improve the operating stability of the vertical centrifugal pump 100.

[0086] Correspondingly, if Figure 9 and Figure 10 As shown, the diameter of the first impeller 31 is greater than the diameter of the second impeller 32, which can increase the centrifugal force generated when the first impeller 31 rotates, improve the driving effect on the liquid, and help increase the generated water pressure, so that the water discharged from the drain port 22 has a larger head, thereby improving the pumping efficiency of the vertical centrifugal pump 100.

[0087] The air conditioner according to the second embodiment of the present invention will be described below with reference to the accompanying drawings.

[0088] According to an embodiment of the present invention, the air conditioner includes: a condensate water treatment system, which includes: a water receiving tray 200, a drainage pipeline and a vertical centrifugal pump 100 according to the first aspect of the present invention. The vertical centrifugal pump 100 is vertically arranged on the water receiving tray 200, the water inlet 21 is located at the lower end of the vertical centrifugal pump 100 and is located in the water storage chamber 201 of the water receiving tray 200, and the drainage outlet 22 is connected to the water inlet end of the drainage pipeline.

[0089] The water receiving pan 200 is used to receive condensed water. The vertical centrifugal pump 100 is set on the water receiving pan 200. The vertical centrifugal pump 100 is used to discharge the condensed water accumulated in the water holding chamber 201 of the water receiving pan 200 from the drain outlet 22. The drainage pipe discharges the condensed water to a distant place, such as the outdoor side or the sewer drainage. In this way, the condensed water of the air conditioner can be processed, the overflow of the condensed water can be avoided, and the working stability of the air conditioner can be improved.

[0090] By installing the vertical centrifugal pump 100 according to the first aspect of the present invention, the vertical centrifugal pump 100 is vertically mounted on the water receiving pan 200. Compared to installing a horizontal centrifugal pump, the space occupied by the water receiving pan 200 can be reduced, thereby reducing the difficulty of arranging the condensate water treatment system and facilitating an increase in the water capacity of the water receiving pan 200. Furthermore, by installing the vertical centrifugal pump 100 according to the first embodiment of the present invention, the problem of exhausting the internal cavity of the vertical centrifugal pump 100 is resolved, enabling smooth water pumping operation, improving the operating reliability of the condensate water treatment system, and facilitating improved performance of the air conditioner.

[0091] In some embodiments of the present invention, Figure 12 As shown, the air conditioner includes a base 300 , a heat exchanger of the air conditioner is mounted on the base 300 , and a water receiving pan 200 is formed on the base 300 , and the water receiving pan 200 is used to receive condensed water generated by the heat exchanger.

[0092] In some embodiments of the present invention, the air conditioner is a window air conditioner, and the condensate treatment system further comprises a spray head connected to the outlet end of the drainage pipe. The spray head atomizes and sprays the condensate discharged from the drainage pipe, thereby consuming the condensate.

[0093] In some embodiments of the present invention, the spray head is arranged at the outdoor part of the window machine, and the spray head sprays directly toward the outside or the air outlet side of the outdoor fan, which is conducive to improving the spray efficiency.

[0094] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0095] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0096] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0097] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0099] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vertical centrifugal pump, characterized in that: include: A pump body, the pump body comprising a pump casing and a drive shaft, the drive shaft extending downward from a lower end of the pump casing; A pump cover, the pump cover is arranged at the bottom of the pump body and forms a cavity between the pump cover and the pump housing. The pump cover is formed with a water inlet and a drain port communicating with the cavity, the water inlet is located at the lower end of the pump cover, and the drain port is located at the side of the pump cover and is higher than the water inlet; an impeller, the impeller being disposed in the cavity and connected to the drive shaft extending into the cavity; Wherein, an exhaust hole is also formed on the pump cover, and the exhaust hole is connected with the cavity and is higher than the water inlet.

2. The vertical centrifugal pump according to claim 1, characterized in that The exhaust hole is lower than the upper end of the drain outlet; and / or the aperture of the exhaust hole is smaller than the flow area of ​​the drain outlet.

3. The vertical centrifugal pump according to claim 1, characterized in that The pump cover includes a water inlet section and a volute section, the water inlet section is connected to the bottom of the volute section, the water inlet is formed at the lower end of the water inlet section, a diffusion section extends from the side of the volute section, the outlet end of the diffusion section is formed as the drain port, and the exhaust hole is formed on the volute section or at the upper end of the water inlet section.

4. The vertical centrifugal pump according to claim 3, characterized in that: The exhaust hole is formed on a side of the volute section and is located on a side of the diffuser section close to the volute tongue of the volute section.

5. The vertical centrifugal pump according to claim 4, characterized in that: A central angle between the exhaust hole and the diffuser section is less than 90°.

6. The vertical centrifugal pump according to claim 4, characterized in that There are a plurality of exhaust holes, which are spaced apart along the circumference of the volute section.

7. The vertical centrifugal pump according to claim 4, characterized in that The exhaust hole is located at a lower portion of a side portion of the volute section.

8. The vertical centrifugal pump according to claim 3, characterized in that: The water inlet section is formed in a cylindrical shape, and the diameter of the water inlet section is smaller than the diameter of the volute section. The impeller includes a first impeller and a second impeller. The first impeller is connected above the second impeller and is located in the volute section. At least a portion of the second impeller is arranged in the water inlet section. The diameter of the first impeller is larger than the diameter of the second impeller.

9. The vertical centrifugal pump according to claim 1, characterized in that: The pump cover includes a water inlet section and a volute section, the water inlet section is connected to the bottom of the volute section, the impeller includes a first impeller and a second impeller, the first impeller is connected above the second impeller and is located in the volute section, at least part of the second impeller is arranged in the water inlet section, and the diameter of the first impeller is larger than the diameter of the second impeller.

10. The vertical centrifugal pump according to claim 9, characterized in that The second impeller includes a plurality of second blades spaced apart in a circumferential direction of the drive shaft, and the second blades are formed as inclined blades extending from bottom to top at an inclination with respect to a vertical direction.

11. The vertical centrifugal pump according to claim 10, characterized in that: The upper end of the second blade extends into the volute section.

12. The vertical centrifugal pump according to claim 9, characterized in that The first impeller includes a plurality of first blades spaced apart along the circumference of the drive shaft, and the second impeller includes a plurality of second blades spaced apart along the circumference of the drive shaft. The height of the first blades in the vertical direction is smaller than the height of the second blades in the vertical direction.

13. The vertical centrifugal pump according to claim 9, characterized in that The water inlet section is formed in a cylindrical shape, and the diameter of the water inlet section is smaller than the diameter of the volute section. The water inlet is formed at the lower end of the water inlet section, and the drain outlet is provided on the side of the volute section.

14. An air conditioner, characterized in that: include: A condensate water treatment system, comprising: a water receiving tray, a drainage pipeline and a vertical centrifugal pump according to any one of claims 1 to 13, wherein the vertical centrifugal pump is vertically arranged on the water receiving tray, the water inlet is located at the lower end of the vertical centrifugal pump and in the water holding cavity of the water receiving tray, and the drainage outlet is connected to the water inlet end of the drainage pipeline.

15. The air conditioner according to claim 14, wherein: The air conditioner is a window unit, and the condensed water treatment system further includes a spray head, and the water outlet end of the drainage pipeline is connected to the spray head.

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