Pumps with low-noise discharge chambers

Abstract

A pump with a low-noise drainage chamber includes: a main housing; a stator; a partition; a rotor; an impeller; and a lower housing having an annular sidewall. A drainage chamber is formed between the lower housing and the partition, and the lower housing has a drainage channel extending outward from its side. The lower housing has a lower drainage partition extending inward from the annular sidewall; the partition has an upper drainage partition extending into the drainage chamber and abutting against the lower drainage partition; the partition has an arc-shaped guide member, the arc of which corresponds to the annular sidewall of the lower housing, one end of which is connected to the upper drainage partition to guide water to the drainage channel.

Description

Technical Field

[0001] This invention relates to drainage pumps, and more particularly to a pump with a low-noise drainage chamber. Background Technology

[0002] Taiwanese Patent No. M482715 discloses a drainage device for an air conditioning unit with a low-noise drainage shell. The main feature is a drainage divider block installed inside the lower drainage shell. The two sides of this drainage divider block taper inwards, and a backward-sloping surface is formed at the end edge, separating a receiving groove and a drainage groove. This drainage divider block guides the water flow during drainage, reducing water flow resistance and lowering the noise level during drainage.

[0003] While the aforementioned technologies effectively reduce water flow resistance and lower drainage noise, the shell portion covering the drainage casing in this case lacks a corresponding design and is simply a flat surface. For larger drainage flows, the drainage impeller and the internal space of the drainage casing need to be increased. Therefore, if the shell above the drainage casing is not flat, it can actually cause turbulence. Consequently, the structure of the shell above the drainage casing needs to be modified to correspond with the drainage partition block, thus maintaining the effects of reducing water flow resistance and lowering drainage noise. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies of the prior art by providing a pump with a low-noise drainage chamber. The pump utilizes a structure with a baffle plate to cooperate with the lower drainage partition block of the lower housing, thereby improving the flow guidance effect and reducing water flow resistance and drainage noise.

[0005] To achieve the above objectives, the present invention provides a pump with a low-noise drainage chamber, comprising: a main housing; a stator disposed within the main housing; a partition plate covering the bottom of the main housing and having a cylindrical, downward-facing trough and an annular rim surrounding the opening of the trough, the partition plate and the main housing together covering the stator, and the stator enclosing the trough; a rotor rotatably disposed within the main housing and the trough, and enclosed by the stator; an impeller disposed within and below the rotor; and a lower housing disposed within the main housing and below the partition plate, having an annular sidewall, wherein a drainage chamber is formed between the lower housing and the partition plate, and the impeller is located within the drainage chamber, the lower housing having... The device has a downward-facing water inlet and a drainage channel extending outward from the side. A lower drain partition extends inward from the annular sidewall, narrowing towards its end. This lower drain partition is located on one side of the drainage channel, serving as its starting point. The partition has an upper drain partition extending into the drainage chamber, narrowing towards its end and abutting against the lower drain partition. The partition also has an arc-shaped guide member located within the drainage chamber, its arc shape corresponding to the annular sidewall of the lower housing. One end of the arc-shaped guide member is connected to the upper drain partition to guide water towards the drainage channel.

[0006] The technical advantages of this invention are as follows:

[0007] The present invention utilizes the arc-shaped flow guide provided by the partition and the upper drainage partition block to cooperate with the lower drainage partition block of the lower shell to improve the water flow guiding effect, thereby better reducing water flow resistance and lowering drainage noise.

[0008] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description

[0009] Figure 1 This is a perspective view of a preferred embodiment of the present invention;

[0010] Figure 2 This is an exploded view of a preferred embodiment of the present invention;

[0011] Figure 3 For along Figure 1 Sectional view along section line 3-3;

[0012] Figure 4 This is a partially exploded view of a preferred embodiment of the present invention, showing the state of the interior of the lower housing and the lower part of the partition;

[0013] Figure 5This is another partially exploded view of a preferred embodiment of the present invention, showing the state of the interior of the lower housing and the lower part of the partition;

[0014] Figure 6 This is a schematic diagram showing a rotation angle according to a preferred embodiment of the present invention;

[0015] Figure 7 For along Figure 6 Sectional view along section line 7-7;

[0016] Figure 8 This is a schematic diagram showing another perspective of a preferred embodiment of the present invention, rotated by an angle;

[0017] Figure 9 For along Figure 8 Sectional view along section line 9-9;

[0018] Figure 10 This is an inverted schematic diagram of a preferred embodiment of the present invention;

[0019] Figure 11 For along Figure 10 Sectional view along section line 11-11.

[0020] Among them, the attached figures are labeled

[0021] 10 Pumps with low-noise drainage chambers

[0022] 11 Main shell

[0023] 13 stators

[0024] 15 partitions

[0025] 151 sump

[0026] 152 ring eaves

[0027] 153 Arc-shaped air guide

[0028] 154 guide surface

[0029] 16 Upper Drainage Separator

[0030] 17 rotors

[0031] 19 impellers

[0032] 21 Lower shell

[0033] 22 Annular sidewalls

[0034] 221 Lower Drainage Separator

[0035] 24 drainage chambers

[0036] 26 water inlets

[0037] 28 drainage channels Detailed Implementation

[0038] The structural and working principles of the present invention will be described in detail below with reference to the accompanying drawings:

[0039] like Figures 1 to 11 As shown, the present invention illustrates a pump 10 with a low-noise drainage chamber through a preferred embodiment, which mainly comprises a main casing 11, a stator 13, a partition plate 15, a rotor 17, an impeller 19, and a lower casing 21, wherein:

[0040] The stator 13 is located inside the main housing 11.

[0041] The partition 15 is installed on the bottom of the main housing 11 and has a cylindrical groove 151 with the opening facing downward, and an eave 152 around the opening of the groove 151. The partition 15 and the main housing 11 together cover the stator 13, and the stator 13 surrounds the groove 151.

[0042] The rotor 17 is rotatably disposed in the main housing 11 and is located within the receiving groove 151 and surrounded by the stator 13.

[0043] The impeller 19 is located on the rotor 17 and below the rotor 17.

[0044] The lower housing 21 is disposed on the main housing 11 and located below the partition 15, and has an annular sidewall 22. A drainage chamber 24 is formed between the lower housing 21 and the partition 15, so that the impeller 19 is located in the drainage chamber 24. The lower housing 21 has a downward-facing water inlet 26 and a drainage channel 28 extending outward from the side.

[0045] The technical features of this embodiment are as follows:

[0046] The lower housing 21 extends inward from the annular sidewall 22 into a lower drainage partition block 221. The lower drainage partition block 221 becomes narrower as it approaches its extended end. The lower drainage partition block 221 is located on one side of the drainage channel 28 and serves as the starting point of the drainage channel 28.

[0047] The partition 15 has an upper drainage partition block 16 extending into the drainage chamber 24. The upper drainage partition block 16 becomes narrower towards its end and abuts against the lower drainage partition block 221. In this embodiment, the end of the lower drainage partition block 221 is rounded and gradually tapers from bottom to top; the end of the upper drainage partition block 16 is also rounded and gradually tapers from top to bottom. Furthermore, the shape of the end of the upper drainage partition block 16 corresponds to the shape of the end of the lower drainage partition block 221.

[0048] The partition 15 has an arc-shaped guide member 153, which is an elongated arc shape integrally formed with the partition 15 and located within the drainage chamber 24. Its arc shape corresponds to the annular sidewall 22 of the lower housing 21. One end of the arc-shaped guide member 153 is connected to the upper drainage partition block 16 to guide water (not shown) to the drainage channel 28. In actual implementation, the arc-shaped guide member 153 can be configured to have a guiding surface 154 facing downwards at an angle. The arc-shaped guide member 153 is higher than the lower drainage partition block 221 but not lower than the bottom edge of the upper drainage partition block 16, and part of it extends over the drainage channel 28, while the rest does not extend over the drainage channel 28 and is located outside the starting point of the drainage channel 28. The guide surface 154 is curved along the annular sidewall 22 of the drainage chamber 24 and is arc-shaped. The guide surface 154 is higher closer to the center of the drainage chamber 24 and lower closer to the annular sidewall 22.

[0049] In the above structure, the impeller 19 rotates to drive the water flow in the following way: the water in the drainage chamber 24 first flows through the arc-shaped guide 153, and then flows to the starting point of the drainage channel 28, the upper drainage partition 16 and the lower drainage partition 221.

[0050] The structure of this embodiment has been described above. The operation mode of this embodiment will be described next.

[0051] like Figure 3 Cooperate Figures 4 to 11 As shown, when water is present in the drainage chamber 24 and drainage begins, the impeller 19 rotates to drive the water flow. The water, driven by the impeller 19, forms a vortex rotating along the annular sidewall 22 within the drainage chamber 24. When the water flows through the arc-shaped guide 153, because the guide surface 154 is angled downwards and arc-shaped, the water flows smoothly along the guide surface 154 and is forced downwards by the pressure of the guide surface 154, flowing towards the drainage channel 28. This process reduces noise and lowers water flow resistance. Therefore, the arc-shaped guide 153 can reduce noise and lower water flow resistance.

[0052] When the water flows through the arc-shaped guide 153 and reaches the starting point of the drainage channel 28, it is separated by the upper drainage partition 16 and the lower drainage partition 221. A portion of the water enters the drainage channel 28 and is discharged outwards, while the remainder flows back into the drainage chamber 24 to continue rotating with the vortex. Since the upper drainage partition 16 and the lower drainage partition 221 abut against each other, they work together to separate the water flow. Furthermore, the ends of both the upper drainage partition 16 and the lower drainage partition 221 are rounded and have a tapering structure, which further reduces turbulence during water separation, minimizes resistance, and reduces noise.

[0053] As can be seen from the above, the present invention utilizes the arc-shaped flow guide 153 provided on the partition 15 and the upper drainage partition block 16 in cooperation with the lower drainage partition block 221 of the lower housing 21 to achieve better water flow guidance, thereby reducing water flow resistance and lowering drainage noise.

[0054] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A pump with a low-noise drainage chamber, comprising: One main shell; A definite element is disposed within the main housing; A partition is provided at the bottom of the main housing and has a cylindrical receiving groove with the opening facing downwards, and an eave around the opening of the receiving groove. The partition and the main housing together cover the stator, and the stator surrounds the receiving groove. A rotor is rotatably disposed in the main housing and located within the accommodating groove, which is enclosed by the stator; An impeller is disposed on the rotor and located below the rotor; and A lower housing is disposed below the main housing and below the partition, and has an annular sidewall. A drainage chamber is formed between the lower housing and the partition so that the impeller is located in the drainage chamber. The lower housing has a downward-facing suction port and a drainage channel extending outward from the side. Its features are, The lower housing extends inward from the annular sidewall into a lower drainage partition block, which becomes narrower as it approaches the end of its extension. The lower drainage partition block is located on one side of the drainage channel and serves as the starting point of the drainage channel. The partition has an upper drainage partition extending into the drainage chamber, the upper drainage partition becoming narrower towards its end, and the upper drainage partition abutting against the lower drainage partition. The partition has an arc-shaped flow guide located in the drainage chamber, and its arc shape corresponds to the annular sidewall of the lower housing. One end of the arc-shaped flow guide is connected to the upper drainage partition block to guide water to the drainage channel.

2. The pump with a low-noise drainage chamber as described in claim 1, characterized in that, The arc-shaped guide has a guide surface that faces downwards at an angle. The arc-shaped guide is higher than the lower drainage partition block, and part of it extends over the drainage channel, while the rest does not extend over the drainage channel and is located outside the starting point of the drainage channel.

3. The pump with a low-noise drainage chamber as described in claim 2, characterized in that, The guide surface is curved along the annular sidewall of the drainage chamber and is arc-shaped. The guide surface is higher closer to the center of the drainage chamber and lower closer to the annular sidewall.

4. The pump with a low-noise drainage chamber as described in claim 1, characterized in that, The arc-shaped guide is not lower than the bottom edge of the upper drainage partition block.

5. The pump with a low-noise drainage chamber as described in claim 1, characterized in that, The lower drainage partition block has rounded corners at its ends and gradually tapers from bottom to top; the upper drainage partition block has rounded corners at its ends and gradually tapers from top to bottom.

6. The pump with a low-noise drainage chamber as described in claim 1, characterized in that, The arc-shaped flow guide is long and arc-shaped and is integrally formed with the partition.

7. The pump with a low-noise drainage chamber as described in claim 1, characterized in that, The impeller rotates to drive the water flow in the following manner: the water in the drainage chamber first flows through the arc-shaped guide, and then flows to the starting point of the drainage channel, the upper drainage partition, and the lower drainage partition.

8. The pump with a low-noise drainage chamber as described in claim 1, characterized in that, The end shape of the upper drainage partition block corresponds to the end shape of the lower drainage partition block.

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