CN114087207A

CN114087207A - Fluid discharge device

Info

Publication number: CN114087207A
Application number: CN202011583801.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Commercial Refrigeration Co ltd
Current assignee: Zhejiang Sanhua Commercial Refrigeration Co ltd
Priority date: 2020-08-24
Filing date: 2020-12-28
Publication date: 2022-02-25

Abstract

The invention discloses a fluid discharge device, which comprises an impeller, wherein the impeller comprises a shaft part, a disc-shaped part and a plurality of blades, the blades radially extend along the radial direction of the shaft part, the disc-shaped part is connected with the lower parts of the blades, the impeller is characterized by further comprising a plurality of drainage parts, the drainage parts are connected with the disc-shaped part, the drainage parts protrude upwards from the disc-shaped part and define the radial section of the impeller, the circular area of the maximum radius circle defined by the outer edge of each blade is Q1, and the projection of the drainage parts is at least partially positioned outside the circular area Q1 on the radial section of the impeller.

Description

Fluid discharge device

Technical Field

The invention belongs to the field of fluid control, and particularly relates to a fluid discharge device.

Background

In the field of fluid control, there are many occasions where the fluid drainage device is used, for example, in the working process of a refrigeration system, when an air conditioner operates (refrigerates and dehumidifies), a large amount of condensed water is generated on the surface of a heat exchanger due to the cooling effect of the heat exchanger on ambient air, and when the condensed water is gathered to a certain degree, the condensed water can drop into a condensed water pan below the heat exchanger, so that the fluid drainage device needs to be installed in the pan to drain the condensed water in the pan to the outside.

In the prior art, when the fluid discharge device is in low-lift discharge, the fluid pressure is low, air easily enters the pump chamber, and bubbles and the blades collide with each other to generate noise.

Disclosure of Invention

The invention provides a fluid discharge device, which comprises a driving motor, a pump body and an impeller, wherein the impeller comprises a shaft part, a disc-shaped part and a plurality of blades, the blades radially extend along the radial direction of the shaft part, the blades are arranged in a pump chamber of the pump body, the disc-shaped part is connected with the lower part of each blade, the shaft part is connected with an output shaft of the driving motor, the impeller also comprises a plurality of drainage parts, the drainage parts are connected with the disc-shaped part, the drainage parts protrude upwards from the disc-shaped part and are defined on the radial section of the impeller, the circular area of a circle with the largest radius defined by the outer edge of each blade is Q1, and the projection of the drainage parts is at least partially positioned outside the circular area Q1 on the radial section of the impeller.

According to the fluid discharge device provided by the invention, the drainage part is arranged, so that the projection of the drainage part is positioned in the circular area of the maximum radius circle defined by the outer edge of each blade, bubbles sucked by the fluid discharge device are gathered to the drainage part under the action of centrifugal force, and the bubbles are released smoothly to reduce noise.

Drawings

FIG. 1: a schematic illustration of a particular embodiment of a fluid displacement device is provided;

FIG. 2: FIG. 1 is a schematic perspective view of an embodiment of an impeller;

FIG. 3: FIG. 2 is an enlarged schematic view of a portion of the impeller;

FIG. 4: FIG. 2 is a top view of the impeller;

FIG. 5: FIG. 2 is a central longitudinal cross-sectional view of the impeller;

FIG. 6: an explanatory view of the radial position region of each blade and the annular portion;

FIG. 7: the invention provides a perspective view of another impeller;

FIG. 8 is an enlarged schematic view of a portion of the impeller of FIG. 7;

FIG. 9: the invention provides a three-dimensional schematic diagram of a third impeller;

FIG. 10: fig. 9 is an enlarged view of a part of the impeller.

The reference symbols in figures 1-10 illustrate:

1- -fluid displacement means;

100-an impeller;

110-a shaft portion; 111-mounting holes;

120-a disk;

121-outer edge;

130-a main blade;

131-an outer rim portion;

132-upper end

140 auxiliary blades;

141-an outer rim portion;

150/150A/150B-drain;

151/151A/151B-first drainage surface;

152-a second drainage surface;

153-upper end portion;

154-outer rim portion;

155-inner edge portion;

156-a transition step;

160-ring-shaped part;

161-inner edge portion, 162-upper end portion;

170-lobule;

200-driving motor;

210-an output shaft;

300-a pump body;

310-upper pump body, 320-lower pump body;

330-fluid inlet end, 340-fluid outlet end;

350-a pump chamber;

400-sealing member.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. The upper and lower terms used herein are defined by the positions of the components shown in the drawings, and are used for clarity and convenience of the technical solution, and it should be understood that the terms used herein should not be construed as limiting the scope of the claims.

Fig. 1 is a schematic view showing an embodiment of a fluid discharge apparatus according to the present invention, and fig. 2 is a perspective view showing an embodiment of an impeller of fig. 1.

As shown in fig. 1 and 2. The fluid discharge device 1 includes a pump body 300, and the pump body 300 is formed by fitting an upper pump body 310 and a lower pump body 320, and is sealed by a seal member 400 to form a pump chamber 350. The lower pump body 320 includes an axially disposed fluid inlet end 330 and a radially disposed fluid outlet end 340, each in communication with a pump chamber 350.

The rotatable impeller 100 includes a shaft portion 110 and a disk portion 120. The main blades 130 are connected to the shaft 100 and radially extend in a radial direction of the shaft 100. The auxiliary blades 140 radially extend in the radial direction of the shaft 100, but are not connected to the shaft 100. The auxiliary blades 140 and the main blades 130 are spaced apart in the circumferential direction of the shaft 110. In this specific arrangement example, the auxiliary blades 140 and the main blades 130 are arranged at equal angular intervals in the circumferential direction. The disk 120 is connected to the auxiliary blades 140 and the lower portion of the main blade 130 (in this embodiment, the impeller is an integral structure, "connected" simply reflects the positional relationship between different portions).

The impeller 100 further includes a small vane 170, and the small vane 170 is connected to the shaft portion 100 and extends in an axial direction from a lower portion of the main vane 130. The lower end of vanelets 170 extend to fluid inlet end 330. The upper part of the shaft 110 of the impeller 100 extends out of the pump chamber 350, the shaft 110 is provided with a mounting hole 111, the output shaft 210 of the driving motor 200 is matched with the mounting hole 111, and the driving motor 200 can drive the impeller 100 to axially rotate in the pump chamber 350.

Fig. 3 is an enlarged view of a part of the impeller, fig. 4 is a plan view of the impeller, and fig. 5 is a central longitudinal sectional view of the impeller.

As shown in fig. 3, 4 and 5. As a specific embodiment of the present invention, the impeller 100 includes a plurality of flow guiding portions 150, and in this specific embodiment, the flow guiding portions 150 are eight, which is adapted to the number of the blades (including the auxiliary blades 140 and the main blades 130).

The ring portion 160 is disposed at the outer edge of the impeller 100, and the ring portion 160 is connected to the outer edge 121 of the disk portion 120 and protrudes upward from the disk portion 120 to form a circular ring structure.

Fig. 6 is an explanatory view of a position region of each blade and the annular portion in the radial direction.

As shown in fig. 6. Q1 is the circular area of the maximum radius circle defined by the outer edge of the radial cross section of the impeller 100 for the vanes (including the auxiliary vanes 140 and the main vanes 130), and Q2 is the annular area defined by the radial cross section of the impeller 100 for the ring 120. Then, in a radial cross section of the impeller 100, the projection of each flow guide 150 is outside Q1 and inside Q2, i.e., in the region of Q3 in the drawing.

Specifically, each of the flow inducing portions 150 is disposed at a radially outer side of the vane (including the auxiliary vane 140 and the main vane 130), a bottom of each of the flow inducing portions 150 is connected to the disk 120 and protrudes upward from the disk 120, each of the flow inducing portions 150 radially extends from each of the vanes, and the flow inducing portions 150 are substantially the same as a direction in which the vane radially extends. (it should be noted that, since the flow guiding part 150 and the vane have a certain circumferential width, the radial extending directions of the flow guiding part 150 and the vane do not need to be completely the same, but the design effect of the present invention can be achieved only if the directions are substantially the same, and as shown in fig. 4, the central axis X-X of the large vane 130 can intersect with the flow guiding part 150).

As shown in fig. 3. As a specific embodiment, the drainage portion 150 includes a plane extending obliquely upward in the axial direction as the first drainage surface 151. Meanwhile, the flow guide portion 150 further includes a plane extending obliquely radially outward as a second flow guide surface 152. The design can play a better drainage effect, eliminate the vapor bubble of fluid in the pump chamber 350, and reduce the noise.

As a further technical solution, the first drainage surface 151 is a plane, and the oblique angle (B) of the first drainage surface 151 is between 20 degrees and 65 degrees (as shown in FIG. 3).

Of course, as an extension of the technical solution, the first and second drainage surfaces 151 and 152 may be provided as a plane or a curved surface.

As a further extension of the solution given by the present invention, in the axial direction Y-Y of the impeller 100, the upper end 153 of the flow inducing portion 150 is lower than the upper end 162 of the annular portion 160. Also, the upper end 153 of the flow inducing portion 150 is lower than the upper ends of the respective vanes, such as the upper end 132 of the main vane 130 and the upper end (not shown) of the auxiliary vane 140. This design allows for less flow resistance of the liquid in the pump chamber.

As a further extension of the solution given by the present invention, the inner edge portion 161 of the annular portion 160 is connected to the outer edge portion 154 of the flow guide 150, and the inner edge portion 155 of the flow guide 150 is connected to the outer edge portion 131 of the blade (including the auxiliary blade 140 and the main blade 130) (see fig. 4). The design can be with the drainage portion 150 that each blade divided liquid in the pump chamber led to, can play the bubble of liquid in the better drainage effect elimination pump chamber, the production of noise reduction.

Fig. 7 is a perspective view of another impeller according to the present invention, and fig. 8 is an enlarged view of a portion of the impeller.

As shown in fig. 7 and 8. The difference from the foregoing technical solution is that each flow guide 150A of the impeller 100A is disposed at a radial outer side of the blade (including the auxiliary blade 140 and the main blade 130), a bottom of each flow guide 150A is connected with the disk 120 and is formed to protrude upward from the disk 120, and the flow guide 150 and the blade (including the auxiliary blade 140 and the main blade 130) are connected by a transition step portion 156. The upper end surface of the transition step portion 156 is connected to the first drainage surface 151A, and according to the technical scheme, the drainage surface can be designed in segments according to different systems, so that the beneficial effects of the foregoing technical scheme can be achieved, and further description is omitted here.

Fig. 9 is a perspective view of a third impeller according to the present invention, and fig. 10 is an enlarged view of a part of the impeller.

As shown in fig. 9 and 10. Each of the flow inducing portions 150B of the impeller 100B is disposed radially outward of the blades (including the auxiliary blade 140 and the main blade 130), and the bottom of each flow inducing portion 150B is connected to the disk portion 120 and is formed to protrude upward from the disk portion 120. The difference from the above-described embodiment is that the inner edge of the flow guide 150B is connected to the outer edge of the blade. The flow guide portion 150B includes a surface extending arcuately upward in the axial direction as a first flow guide surface 151B. The first drainage surface 151B is a curved surface with a substantially continuous width (i.e., without the structural features of the second drainage surface of the previous embodiments). The technical scheme can also achieve the beneficial effects of the technical scheme, and is not repeated herein.

The above is only an exemplary preferred embodiment for better illustrating the technical solution of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present invention, and all such modifications and decorations should be regarded as the protection scope of the present invention.

Claims

1. A fluid discharge device comprises a driving motor, a pump body and an impeller, wherein the impeller comprises a shaft part, a disc-shaped part and a plurality of blades, the blades radially extend along the radial direction of the shaft part, the blades are arranged in a pump chamber of the pump body, the disc-shaped part is connected with the lower part of each blade, the shaft part is connected with an output shaft of the driving motor,

the impeller further comprises a plurality of flow guiding parts, the flow guiding parts are connected with the disc-shaped parts, the flow guiding parts protrude upwards from the disc-shaped parts and define a radial cross section of the impeller, a circular area of a maximum radius circle defined by the outer edge of each blade is Q1, and then the projection of the flow guiding parts is at least partially positioned outside the circular area Q1 in the radial cross section of the impeller.

2. The fluid displacement device as claimed in claim 1, wherein the impeller further comprises an annular portion connected to an outer edge of the disk portion and defining an annular region Q2 in a radial cross-section of the impeller, and a projection of the flow-inducing portion is located inside the annular region Q2 in the radial cross-section of the impeller.

3. The fluid evacuation device of claim 2, wherein the flow director comprises a first flow directing surface extending axially upwardly at an oblique angle in a planar or arcuate manner.

4. The fluid evacuation device of claim 3, wherein the first drainage surface is planar and the first drainage surface has an oblique angle (B) between 20 ° and 65 °.

5. The fluid evacuation device of claim 3, wherein the first drainage surface is a circular arc surface.

6. The fluid evacuation device of claim 3, wherein each of the plurality of drains further comprises a second drain surface extending radially outward at an oblique planar or arcuate extension.

7. The fluid displacement device as claimed in any one of claims 1 to 6, wherein each of the plurality of flow-inducing portions radially extends, the number of flow-inducing portions being the same as the number of the plurality of vanes, the radial direction of extension of the flow-inducing portions being substantially the same as the radial direction of extension of the vanes.

8. The fluid displacement device defined in claim 7, wherein the vanes comprise primary vanes and secondary vanes, the secondary vanes being spaced from the primary vanes, the primary vanes being directly connected to the shaft portion, and the secondary vanes being not directly connected to the shaft portion.

9. The fluid discharge device according to any one of claims 2 to 6, wherein an upper end portion of each of the flow-inducing portions is lower than an upper end portion of the annular portion in an axial direction of the blades, and the upper end portion of each of the flow-inducing portions is lower than the upper end portion of each of the blades.

10. The fluid evacuation device of claim 9, wherein an inner edge portion of the annular portion is connected to an outer edge portion of each of the drains; the inner edge part of the drainage part is directly connected with the outer edge part of the blade, or the drainage part is connected with the blade through a transition step part.