Drain pump with soundproof housing

Abstract

A drainage pump with a silencer shell comprises: a lower shell; a main shell; a drainage blade; a motor; and a cover body, which is covered on the main shell; wherein a plurality of partition walls and a plurality of baffles extend upward from the bottom plate of the main shell, and a gap is formed between two of the partition walls at a predetermined distance, and the plurality of partition walls extend obliquely outward along an edge of each of the gaps to form a plurality of guide plates, and each of the guide plates and the partition wall at the other edge of the corresponding gap are separated by a predetermined distance to form a flow channel opening outward; each of the baffles is located between each of the gaps and the through hole; the main shell has an outer wall, which surrounds the cylindrical structure formed by the plurality of partition walls and forms an outer ring area between the cylindrical structure, and the outer wall has a plurality of overflow holes.

Description

Technical Field

[0001] The invention relates to a drainage device, in particular to a drainage pump with a silencer housing used in an air-conditioning device. Background Art

[0002] Chinese patent CN 104514725A discloses a drainage pump for air conditioners. The main feature of this case is that the lower housing of the motor has a cover, and a cylindrical outer cylinder and inner cylinder that support the motor, and the drainage slit provided in the outer cylinder has a guide component that guides the residual water to the outside; the aforementioned existing patent also discloses that the drainage slit of the cover has a guide component that guides the residual water to the outside. Although this case can shield the inner cylinder slit of the inner cylinder by the outer cylinder, thereby blocking some of the noise from the motor operation, the drainage path of this case is too long, which increases the difficulty of draining the residual water.

[0003] Taiwan Patent No. I612221 discloses a drainage pump for air conditioners. The key point of the case is to use multiple gaps set in the cylindrical body of the motor lower shell, and the guide plate across each of the gaps to form an outward flow channel, so as to achieve the effect of shortening the drainage path. However, although the technology of this case shortens the drainage path, it is found in actual use that although the guide plate of the case can positively block the sound in the cylindrical body, the sound will still be transmitted outward through the multiple gaps, and its noise reduction effect is still limited. Summary of the invention

[0004] In the above-mentioned prior art, the drainage pump housing with the effect of silencing and reducing noise has a longer drainage path, while the drainage pump housing with a short drainage path has a higher noise. Therefore, it can be seen that the current prior art cannot take into account the problems of silencing and shortening the drainage path.

[0005] In order to solve the above problems, the present invention proposes a drainage pump with a silencer shell, which can take into account the effects of silencing and reducing noise as well as shortening the drainage path. The drainage pump with a silencer shell proposed by the present invention includes: a lower shell, with a water suction port formed at the bottom and a drainage port formed on the side; a main shell, which is substantially cylindrical and is arranged above the lower shell, and a drainage chamber is formed between the main shell and the lower shell, the water suction port and the drainage port are both spatially connected to the drainage chamber, and the main shell has a motor chamber and an overflow chamber; a drainage blade is arranged in the drainage chamber, a motor is arranged in the motor chamber, and the overflow chamber is located at the motor chamber. The main housing has a bottom plate with a through hole in the space connected with the drain chamber, and the drain blade is connected with the drive shaft of the motor through the through hole; and a cover body is arranged on the main housing to cover the motor chamber; wherein a plurality of partition walls are extended upward from the bottom plate of the main housing and are located in the overflow chamber, the plurality of partition walls are arc-shaped and surround the through hole to form a cylindrical structure, and a gap is formed between the two partition walls at a predetermined distance, and the plurality of partition walls are The plurality of gaps formed between the partition walls are arranged at equal angles relative to the axis of the cylindrical structure, and the plurality of partition walls extend obliquely outward along one edge of each of the gaps to form a plurality of guide plates, each of the guide plates spans each of the gaps and extends to the other edge of each of the gaps, each of the guide plates is separated from the partition wall at the other edge of each of the gaps by a predetermined distance and forms a flow channel opening outward, wherein the space enclosed by the plurality of partition walls is spatially connected to the outside through the plurality of gaps and the plurality of flow channels; The bottom plate of the main shell extends upward with multiple baffles, each of which corresponds to each of the gaps and is located between each of the gaps and the through-hole, and a baffle is separated from the corresponding gap by a predetermined distance without closing the gap; the main shell has an outer wall, which surrounds the cylindrical structure formed by the multiple partition walls and forms an outer ring area between the cylindrical structure, and the outer wall has multiple overflow holes, and the bottom ends of the hole edges of the multiple overflow holes are located on the bottom plate of the main shell and are spatially connected with the outer ring area.

[0006] With the above structure, the present invention can provide a good noise reduction effect through the multiple sound blocking structures of the outer wall, the baffle and the guide plate.

[0007] Furthermore, if the overflow hole of the present invention is arranged close to each guide plate, the closeness here refers to that one overflow hole is closer to one of the two adjacent guide plates. In this case, the present invention will shorten the flow path more than the prior art, making it easier for water to be discharged. Therefore, such an arrangement enables the present invention to simultaneously achieve the dual effects of shortening the flow path and reducing noise, and has an improvement in efficacy compared to the aforementioned prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1It is a combined stereogram of a preferred embodiment of the present invention.

[0009] Figure 2 It is an exploded view of a preferred embodiment of the present invention.

[0010] Figure 3 This is a partial exploded view of a preferred embodiment of the present invention, mainly showing the internal structure of the main shell.

[0011] Figure 4 This is a partial component diagram of a preferred embodiment of the present invention, mainly showing the bottom surface of the motor.

[0012] Figure 5 This is a top view of some components of a preferred embodiment of the present invention, showing the internal structure of the main shell.

[0013] Figure 6 For along Figure 5 Sectional view along line 6-6.

[0014] Wherein, the reference numerals are:

[0015] 10Drainage pump with silencer housing

[0016] 11 Lower housing

[0017] 12 Water inlet

[0018] 14 Drainage outlet

[0019] 18 Drainage Chamber

[0020] 19 Drainage Blades

[0021] 21 main shell

[0022] 211 base plate

[0023] 212 Perforation

[0024] 213 card blocks

[0025] 22 Motor room

[0026] 23 Motor

[0027] 232 Concave

[0028] 24 Overflow Chamber

[0029] 25 baffle

[0030] 26 Partition Wall

[0031] 261 deflector

[0032] 262 convex column

[0033] 27 Gap

[0034] 271 Runner

[0035] 28 outer wall

[0036] 281 Overflow hole

[0037] 29 Outer Ring Area

[0038] 31 Cover

[0039] 313 hook part DETAILED DESCRIPTION

[0040] In order to explain the technical features of the present invention in detail, the following preferred embodiments are given with reference to the accompanying drawings, wherein:

[0041] like Figures 1 to 6 As shown, a drainage pump 10 with a muffler housing provided by a preferred embodiment of the present invention is mainly composed of a lower housing 11, a main housing 21 and a cover 31, wherein:

[0042] The lower shell 11 has a water inlet 12 formed at the bottom and a water outlet 14 formed at the side.

[0043] The main housing 21 is substantially cylindrical and is disposed above the lower housing 11. A drainage chamber 18 is formed between the main housing 21 and the lower housing 11. The water inlet 12 and the drainage port 14 are both spatially connected to the drainage chamber 18. The main housing 21 has a motor chamber 22 and an overflow chamber 24. A drainage blade 19 is disposed in the drainage chamber 18. A motor 23 is disposed in the motor chamber 22. The overflow chamber 24 is located below the motor chamber 22. The main housing 21 has a bottom plate 211. The bottom plate 211 has a through hole 212 and is spatially connected to the drainage chamber 18. The drainage blade 19 is connected to the drive shaft of the motor 23 through the through hole 212. Since it is common knowledge that the motor 23 has a drive shaft, it will not be described in detail. A plurality of blocks 213 are disposed on the outer surface of the main housing 21.

[0044] The cover 31 is disposed on the main housing 21 to cover the motor chamber 22. The cover 31 has a plurality of hooks 313 extending outward and downward, and the hooks 313 hook the plurality of blocks 213 to be fixed to the main housing 21.

[0045] A plurality of partition walls 26 extend upward from the bottom plate 211 of the main housing 21 and are located in the overflow chamber 24. The plurality of partition walls 26 are arc-shaped and surround the through hole 212 to form a cylindrical structure. A gap 27 is formed between the plurality of partition walls 26 at a predetermined distance. The plurality of gaps 27 formed between the plurality of partition walls 26 are arranged at equal angles relative to the axis of the cylindrical structure. The plurality of partition walls 26 extend outward along an edge of each of the gaps 27. The plurality of guide plates 261 are formed by obliquely extending. In this embodiment, each of the guide plates 261 is arranged in an arc shape and crosses each of the slits 27 to extend to the other edge of each of the slits 27. Each of the guide plates 261 is separated from the partition wall 26 at the other edge of each of the slits 27 by a predetermined distance and forms a flow channel 271 opening outward, wherein the space enclosed by the plurality of partition walls 26 is spatially connected to the outside through the plurality of slits 27 and the plurality of flow channels 271. The plurality of guide plates 261 extend and are arranged in a clockwise direction relative to the axis of the cylindrical structure.

[0046] Secondly, a plurality of baffles 25 extend upward from the bottom plate 211 of the main housing 21, and each of the baffles 25 corresponds to each of the slits 27 and is located between each of the slits 27 and the through hole 212, and each of the baffles 25 and its corresponding slit 27 are separated by a predetermined distance and do not close the slit 27. The plurality of baffles 25 can produce a sound blocking effect, so that the sound in the cylindrical structure will not pass directly through the plurality of slits 27, but will be blocked by the plurality of baffles 25. Therefore, in terms of setting, the lateral width of each of the baffles 25 can be set to be not less than the width of one of the slits 27, for example, in this embodiment, it is set to be the same as the width of one of the slits 27.

[0047] In addition, the main housing 21 has an outer wall 28, which surrounds the cylindrical structure formed by the multiple partition walls 26 and forms an outer ring area 29 between the cylindrical structure. The outer wall 28 has multiple overflow holes 281. In this embodiment, three are taken as an example. The multiple overflow holes 281 are arranged correspondingly below each of the block 213. This is because the mold is set to facilitate mold opening, so the overflow holes 281 and the block 213 are arranged at corresponding positions up and down. The bottom ends of the hole edges of the multiple overflow holes 281 are located on the bottom plate 211 of the main housing 21, and are spatially connected with the outer ring area 29. In addition, each of the overflow holes 281 is arranged close to each of the guide plates 261. Here, close means that one overflow hole 281 is between two adjacent guide plates 261, closer to one of the guide plates 261, and not exactly located in the middle of the two.

[0048] like Figure 6As shown, in actual implementation, the multiple partition walls 26 can be set to have the same height, and the multiple guide plates 261 have the same height as the multiple partition walls 26. In addition, the multiple baffles 25 can also be set to have the same height as the multiple partition walls 26. The bottom of the motor 23 is against the multiple partition walls 26, the multiple baffles 25 and the top edge of the multiple guide plates 261. That is, the height of the multiple partition walls 26 is the height of the overflow chamber 24, and the motor chamber 22 is above the top edge of the multiple partition walls 26. In addition, as Figure 3 As shown, among the plurality of partition walls 26, the top of some of the partition walls 26 extends upward to form two convex columns 262, and the bottom of the motor 23 has two concave holes 232. When the bottom of the motor 23 abuts against the top edges of the plurality of partition walls 26 and the plurality of guide plates 261, the two convex columns 262 are embedded in the two concave holes 232, thereby producing a positioning effect. The number of the convex columns 262 and the concave holes 232 can be more than two, thereby increasing the positioning effect.

[0049] The heights of the aforementioned plurality of partition walls 26 and baffles 25 may also be set to be different from each other, but attention should be paid to the stability of supporting the motor 23 .

[0050] The above describes the architecture of the present invention. Next, the operating state of the present invention will be described.

[0051] like Figure 2 As shown, under normal operation, the motor 23 drives the drain blade 19 to rotate, so as to discharge the water in the drain chamber 18 outward from the drain port 14. Under normal conditions, the drain port 14 is usually connected to a drain pipe (not shown) to drain the water outward. Since connecting the drain pipe is a well-known technology, it is not shown in the figure.

[0052] like Figure 2 and Figure 3 Cooperate Figure 5 and Figure 6 As shown, after the motor 23 is turned off or stops running, the drainage blade 19 stops rotating, and at this time, part of the water in the drainage pipe will flow back to the drainage chamber 18. Since the drainage blade 19 is arranged in the drainage chamber 18, the water flowing back will not enter the drainage chamber 18 too quickly, but slowly, and then enter the cylindrical structure of the overflow chamber 24 through the perforation 212. The water in the cylindrical structure will flow outward to the outer ring area 29 through the multiple gaps 27 and then through the multiple flow channels 271. Then, by having the overflow hole 281 close to the guide plate 261, that is, close to the opening of the flow channel 271, the water flowing out of the multiple flow channels 271 can flow quickly to each overflow hole 281 and flow out.

[0053] The number of overflow holes 281 can be determined based on actual needs. In this case, three overflow holes 281 close to three guide plates 261 are sufficient to achieve the overflow and drainage effect, so there is no need to set four overflow holes 281. In the case of three overflow holes 281 in this case, each overflow hole 281 is still close to an opening of the flow channel 271, which can shorten the flow channel 271, and then quickly drain water, so that the reverse flow water will not quickly accumulate in the cylindrical structure because it cannot be discharged and the water level will rise to the point of damaging the motor 23. Of course, if it is decided to set four overflow holes, it can also be based on this case. Figure 5 The corresponding relationship between the overflow holes 281 and the guide plates 261 is used to arrange the overflow holes and the guide plates 261 in correspondence.

[0054] As can be seen from the above, the baffle 25 of this case can prevent the sound from directly passing through the gap 27, and the multiple guide plates 261 can block the sound passing through the gap 27 from the front. In addition, the multiple guide plates 261 are provided with the outer wall 28 of the main shell 21, and the outer wall 28 can also play the effect of blocking the sound. Therefore, the multiple guide plates 261 and the outer wall 28 can play a multiple effect of isolating noise, and the noise reduction effect is excellent. In addition, the overflow hole 281 of this case is close to the guide plate 261, which still has the effect of shortening the flow channel 271 compared with the prior art, so that the water in the overflow chamber 24 can flow out quickly. In summary, the present invention can take into account the dual effects of shortening the flow channel 271 and reducing noise at the same time, and has an improvement in efficacy compared with the aforementioned prior art.

[0055] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims of the present invention.

Claims

1. A drainage pump with a silencer housing, comprising: A lower shell has a water inlet formed at the bottom and a water outlet formed on the side; a main housing, which is substantially cylindrical and is disposed above the lower housing, and a drainage chamber is formed between the main housing and the lower housing, the water inlet and the drainage port are both spatially connected to the drainage chamber, and the main housing has a motor chamber and an overflow chamber; a drainage blade is disposed in the drainage chamber, a motor is disposed in the motor chamber, the overflow chamber is located below the motor chamber, and the main housing has a bottom plate, the bottom plate has a through hole and is spatially connected to the drainage chamber, and the drainage blade is connected to the driving shaft of the motor through the through hole; and A cover body is disposed on the main housing to cover the motor chamber; Features: A plurality of partition walls extend upward from the bottom plate of the main shell and are located in the overflow chamber, the plurality of partition walls are arc-shaped and surround the perforation to form a cylindrical structure, and a gap is formed between two of the partition walls at a predetermined distance, and the plurality of gaps formed between the plurality of partition walls are arranged at equal angles relative to the axis of the cylindrical structure, and the plurality of partition walls extend obliquely outward along one edge of each gap to form a plurality of guide plates, each of the guide plates spans each gap and extends to the other edge of each gap, and each of the guide plates and the partition wall at the other edge of each gap are separated by a predetermined distance and form a flow channel opening outward, wherein the space enclosed by the plurality of partition walls is spatially connected to the outside through the plurality of gaps and the plurality of flow channels; A plurality of baffles are extended upward from the bottom plate of the main housing, each of the baffles corresponds to each of the slits and is located between each of the slits and the through hole, and a baffle is separated from a corresponding slit by a predetermined distance so as not to close the slit; The main shell has an outer wall, which surrounds the cylindrical structure formed by the multiple partition walls and forms an outer ring area between the cylindrical structure. The outer wall has multiple overflow holes, and the bottom ends of the hole edges of the multiple overflow holes are located on the bottom plate of the main shell and are spatially connected with the outer ring area.

2. The drainage pump with a sound-absorbing housing according to claim 1, characterized in that: The heights of the partition walls are the same, the heights of the guide plates are the same as the partition walls, the heights of the baffle plates are the same as the partition walls, and the bottom of the motor abuts against the top edges of the partition walls, the baffle plates and the guide plates.

3. The drainage pump with a sound-absorbing housing according to claim 2, characterized in that: Among the plurality of partition walls, some of the partition wall tops extend upward to form at least two convex columns; the motor bottom has at least two recesses, and when the motor bottom abuts against the plurality of partition walls and the plurality of guide plate top edges, the at least two convex columns are embedded in the at least two recesses.

4. The drainage pump with a sound-absorbing housing according to claim 1, characterized in that: Each of the overflow holes is arranged close to each of the guide plates. Here, close means that one of the overflow holes is closer to one of the guide plates among two adjacent guide plates.

5. The drainage pump with a sound-absorbing housing according to claim 1, characterized in that: The guide plates are multiple in arc shape.

6. The drainage pump with a sound-absorbing housing according to claim 1, characterized in that: The plurality of guide plates extend and are arranged in a clockwise direction relative to the axis of the cylindrical structure.

7. The drainage pump with a sound-absorbing housing according to claim 1, characterized in that: The transverse width of each baffle is not less than the width of the gap.

8. The drainage pump with a sound-absorbing housing according to claim 1, characterized in that: The cover body extends outward and downward with a plurality of hooks, the outer surface of the main shell is provided with a plurality of blocks, and the cover body is fixed to the main shell by hooking the plurality of blocks with the plurality of hooks; each overflow hole is correspondingly located below each block.

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