TW202037815A - Drain pump with sound-absorbing shell sound-absorbing shell includes: a lower shell; a main shell; a drain blade; a motor; and a cover - Google Patents

Abstract

A drain pump with a sound-absorbing shell includes: a lower shell; a main shell; a drain blade; a motor; and a cover provided on the main shell; wherein the bottom plate extends upwards with a plurality of partition walls and a plurality of baffles, and a gap is formed between the two aforementioned partition walls at a predetermined distance, 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 is separated from the partition wall at the other edge of the corresponding gap by a predetermined distance to form an outward flow channel; each of the baffles is located between each of the gap and the perforation; the main housing has an outer wall , Surrounding the cylindrical structure formed by the plurality of partition walls to form an outer ring area with the cylindrical structure, and the outer wall has a plurality of overflow holes.

Description

Drain pump with silencing shell

The present invention relates to a drainage device, and particularly refers to a drainage pump with a sound-absorbing shell used in an air conditioner.

Chinese Patent No. 104514725A discloses a drain pump for an air conditioner. The main feature of this case is that the lower housing of the motor has a cover, and a cylindrical outer and inner cylinder that supports the motor. The drainage gap provided in the outer cylinder has a guide member that guides the residual water to the outside; the aforementioned conventional patent also discloses that the drainage gap of the cover has a guide member that guides the residual water outward. Although in this case, the outer tube part can be used to shield the inner tube gap of the inner tube part, thereby blocking part of the noise of the motor operation, however, the drainage path in this case is too long, which increases the difficulty of draining residual water.

my country Patent No. I612221 discloses a drainage pump for an air conditioner. The focus of this case is to use a plurality of slits provided by the cylindrical body of the lower housing of the motor, and a baffle that spans each of the slits. , To form an outward flow channel, so as to achieve the effect of shortening the drainage path. However, although the technology in this case shortens the drainage path, in actual use, it was found that although the deflector in this case can block the sound in the cylindrical body frontally, the sound will still be transmitted through the plurality of gaps. Out, its noise reduction effect is still limited.

In the aforementioned known technology, the drainage pump housing with noise reduction and noise reduction effects has a longer drainage path, while the drainage pump housing with a short drainage path has greater noise. It can be seen that the current known technology cannot take into account the problems of silence and shortening the drainage path.

In order to solve the above-mentioned problems, the present invention proposes a drainage pump with a sound-absorbing housing, which can take into account the effects of noise reduction and shortening the drainage path. The present invention provides a drainage pump with a silencing shell, including: a lower shell, a suction port is formed at the bottom, and a drain port is formed on the side; a main shell, which is substantially cylindrical, is arranged on the lower shell A drain chamber is formed between the upper part and the lower shell, the water suction port and the drain port are spatially connected to the drain chamber, and the main shell has a motor chamber and an overflow chamber; the drain There is a drain blade in the room, a motor is accommodated in the motor compartment, the overflow compartment is located below the motor compartment, and the main housing has a bottom plate, the bottom plate has a through hole and spatially communicates with the drain chamber , The drain blade is connected with the drive shaft of the motor through the perforation; and a cover is arranged on the main casing to cover the motor chamber; wherein, the bottom plate of the main casing extends upward A plurality of partition walls are located in the overflow chamber, the plurality of partition walls are arc-shaped and enclose the perforation to form a cylindrical structure, and the two aforementioned partition walls are separated by a predetermined distance to form a gap. The plurality of gaps formed between the gaps are arranged equiangularly with respect to the axis of the cylindrical structure, and the plurality of partition walls extend obliquely outward along an edge of each of the gaps to form a plurality of baffles, and each of the guides The board spans each of the gaps and extends to the other edge of each of the gaps, and each of the baffles is separated from the partition wall at the other edge of each of the gaps by a predetermined distance and forms an outward flow path, wherein the plurality of partition walls are The enclosed space is spatially communicated with the outside world through the plurality of channels through the plurality of gaps; a plurality of baffles extend upward from the bottom plate of the main casing, and each baffle is located in each of the gaps corresponding to the gaps. And the perforation, and a baffle is separated from the corresponding gap by a predetermined distance without closing the gap; the main housing has an outer wall surrounding the cylindrical structure formed by the plurality of partition walls An outer ring area is formed between the outer ring and the cylindrical structure. The outer wall has a plurality of overflow holes. The bottom of the hole edge of the plurality of overflow holes is located on the bottom plate of the main housing and is spatially connected to the outer ring area. Communicate.

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

Furthermore, if the overflow hole of the present invention is arranged close to each of the deflectors, the proximity here means that one of the overflow holes is between the two adjacent deflectors, which is closer to it With the baffle, in this situation, the present invention will shorten the flow path more than the known technology, so that the water can be discharged more easily. Therefore, such an arrangement can enable the present invention to take into account the dual effects of shortening the flow channel and reducing noise at the same time. Compared with the aforementioned conventional technology, it has an improved efficiency.

In order to explain in detail the technical features of the present invention, the following preferred embodiments are described in conjunction with the drawings, in which:

As shown in Figures 1 to 6, a preferred embodiment of the present invention provides a drainage pump 10 with a silencing housing, which is mainly composed of a lower housing 11, a main housing 21 and a cover 31 ,among them:

The lower shell 11 has a water suction port 12 formed at the bottom and a drain port 14 formed on the side.

The main housing 21 is substantially cylindrical, is located above the lower housing 11, and forms a drainage chamber 18 between the lower housing 11, and the water suction port 12 and the drainage port 14 are both spatially connected The drainage chamber 18 and the main housing 21 have a motor compartment 22 and an overflow compartment 24. The drainage chamber 18 is provided with a drainage blade 19, the motor compartment 22 contains a motor 23, the overflow compartment 24 is located below the motor compartment 22, and the main housing 21 has a bottom plate 211, the bottom plate 211 has a perforation 212 that communicates with the drain chamber 18 in space. The drain blade 19 is connected to the drive shaft of the motor 23 through the perforation 212. Since the motor 23 has a drive shaft is common knowledge, this is not allowed. Repeat. A plurality of clamping blocks 213 are provided on the outer surface of the main housing 21.

The cover 31 covers the main housing 21 and covers the motor chamber 22. The cover 31 extends outwardly and downwardly with a plurality of hook portions 313, and is fixed to the main housing 21 by hooking the plurality of blocking blocks 213 by the plurality of hook portions 313.

Wherein, a plurality of partition walls 26 extend upward from the bottom plate 211 of the main housing 21 to be located in the overflow chamber 24, the plurality of partition walls 26 are arc-shaped and enclose the perforation 212 to form a cylindrical structure, and two The two aforementioned partition walls 26 are separated by a predetermined distance to form a gap 27. The plurality of gaps 27 formed between the plurality of partition walls 26 are arranged equiangularly with respect to the axis of the cylindrical structure, and the plurality of partition walls 26 extends obliquely outward along one edge of each of the gaps 27 to form a plurality of baffle plates 261, each of the baffle plates 261 is arranged in an arc shape in this embodiment, and extends across each of the gaps 27 to each of the On the other edge of the gap 27, each deflector 261 is spaced a predetermined distance from the partition wall 26 at the other edge of each gap 27 and forms a flow path 271 that opens outward, wherein the space enclosed by the plurality of partition walls 26 is The plurality of slits 27 are spatially connected with the outside through the plurality of flow passages 271. The plurality of baffles 261 extend and are arranged in a clockwise direction relative to the axis of the cylindrical structure.

Secondly, a plurality of baffle plates 25 extend upward from the bottom plate 211 of the main housing 21, and each baffle plate 25 corresponds to each of the slits 27 and is located between each of the slits 27 and the perforation 212, and a baffle plate 25 and A corresponding gap 27 is separated by a predetermined distance without closing the gap 27. The plurality of baffles 25 can produce a sound blocking effect, so that the sound in the cylindrical structure will not directly pass through the plurality of gaps 27, but will be blocked by the plurality of baffles 25. Therefore, in the arrangement, the lateral width of each of the baffles 25 can be set not less than the width of the slit 27, for example, it is set to be the same as the width of the slit 27 in this embodiment.

In addition, the main housing 21 has an outer wall 28 that surrounds the cylindrical structure formed by the plurality of partition walls 26 to form an outer ring area 29 between the cylindrical structure, and the outer wall 28 has a plurality of overflows. In this embodiment, three holes 281 are taken as an example. The plurality of overflow holes 281 are correspondingly located below each of the blocks 213 in the setting position. This is because the mold is set to facilitate mold opening, so the overflow The hole 281 and the block 213 are arranged at positions corresponding to the upper and lower sides. The bottom end of the hole edge of the plurality of overflow holes 281 is located at the bottom plate 211 of the main casing 21 and is in spatial communication with the outer ring area 29. In addition, each of the overflow holes 281 is set close to each of the deflectors 261, where the proximity refers to that one overflow hole 281 is located between two adjacent deflectors 261, and is closer to one of the deflectors 261. The deflector 261 is not located exactly in the middle of the two.

As shown in Figure 6, in actual implementation, the plurality of partition walls 26 can be set to have the same height, and the height of the plurality of baffles 261 is the same as the plurality of partition walls 26. In addition, the degree of the plurality of baffles 25 is also It can be set to be the same as the plurality of partition walls 26, the bottom of the motor 23 is attached to the plurality of partition walls 26, the plurality of baffles 25 and the top edge of the plurality of deflectors 261, that is, the height of the plurality of partition walls 26 is Is the height of the overflow chamber 24, and the motor chamber 22 is above the top edge of the plurality of partition walls 26. In addition, as shown in Figure 3, in the plurality of partition walls 26, some of the partition walls 26 extend upward to form two protrusions 262. The bottom of the motor 23 has two recesses 232, and the bottom of the motor 23 abuts When the plurality of partition walls 26 and the top edge of the plurality of deflectors 261 are formed, the two convex posts 262 are embedded in the two recesses 232 to produce a positioning effect. The number of the protrusions 262 and the recesses 232 can be more than two, thereby increasing the positioning effect.

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

The structure of the present invention has been explained above, and the operation state of the present invention will be explained next.

As shown in FIG. 2, under normal operation conditions, the motor 23 drives the drain blade 19 to rotate, so that the water in the drain chamber 18 is discharged from the drain port 14 to the outside. Under normal conditions, the drain port 14 is usually connected to a drain pipe (not shown in the figure) to drain the water outward. Since connecting the drain pipe is a very well-known technology, it will not be shown graphically. .

As shown in Figures 2 and 3 in conjunction with Figures 5 and 6, after the motor 23 is turned off or stopped, the drain blade 19 stops rotating. At this time, the water in the drain pipe will partially flow back Return to the drain chamber 18. Since the drainage chamber 18 is provided with drainage blades 19, the backflowing water does not enter the drainage chamber 18 too quickly, but slowly enters, and then enters the circle of the overflow chamber 24 through the perforation 212 Inside the cylindrical structure. The water located in the cylindrical structure will flow out into the outer ring area 29 through the plurality of gaps 27 and then through the plurality of flow channels 271. Then, as an overflow hole 281 is close to a deflector 261, that is, close to an opening of the flow channel 271, the water flowing out of the plurality of flow channels 271 can quickly flow to each overflow The hole 281 flows out.

The number of overflow holes 281 can be determined according to actual needs. In this case, the proximity of three overflow holes 281 to the three deflectors 261 is sufficient for the overflow and drainage effect, so there is no need Four overflow holes 281 are provided. In the case of the three overflow holes 281 in this case, each of the overflow holes 281 is still close to the opening of the flow channel 271, and can exert the effect of shortening the flow channel 271, and furthermore, can drain water quickly, making the reverse flow The water cannot be discharged quickly and accumulate in the cylindrical structure and the water level will rise to damage the motor 23. Of course, if it is decided to provide four overflow holes, it is also possible to set each overflow hole and each deflector 261 according to the corresponding relationship between the overflow hole 281 and each deflector 261 in FIG. 5 of this case.

It can be seen from the above that the baffle 25 in this case prevents the sound from directly passing through the gap 27, and the plurality of baffles 261 can positively block the sound passing through the gap 27. The flow plate 261 also has an outer wall 28 of the main housing 21. The outer wall 28 can also play a sound blocking effect. Therefore, the plurality of flow guide plates 261 and the outer wall 28 can exert multiple noise isolation effects, which reduces The noise effect is excellent. In addition, with the arrangement of the overflow hole 281 close to the deflector 261 in this case, the flow passage 271 is shortened 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 improved efficiency compared with the aforementioned conventional technology.

10: Drain pump with silencing shell 11: Lower shell 12: Water inlet 14: Drain 18: Drain chamber 19: Drain blade 21: Main shell 211: Bottom plate 212: Perforation 213: Clamp 22: Motor chamber 23: motor 232: recess 24: overflow chamber 25: baffle 26: partition wall 261: deflector 262: convex column 27: gap 271: runner 28: outer wall 281: overflow hole 29: outer ring area 31: Cover 313: Hook

Figure 1 is a combined perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a partial exploded view of a preferred embodiment of the present invention, mainly showing the internal structure of the main housing. Figure 4 is a partial component diagram of a preferred embodiment of the present invention, mainly showing the bottom surface of the motor. Figure 5 is a top view of some components of a preferred embodiment of the present invention, showing the internal structure of the main housing. Figure 6 is a cross-sectional view taken along line 6-6 in Figure 5.

10: Drain pump with silencing shell

11: Lower shell

14: Drain

18: Drainage chamber

19: Drain blade

21: main shell

211: Floor

212: Piercing

213: Card Block

22: Motor room

24: overflow chamber

25: bezel

26: Partition wall

261: Deflector

262: Convex Column

27: Gap

271: Runner

28: Outer Wall

281: Overflow Hole

29: Outer Ring Area

31: Lid

313: Hook

Claims (8)

A drain pump with a sound-absorbing shell, comprising: a lower shell, a suction port is formed at the bottom, and a drain port is formed on the side; a main shell, which is substantially cylindrical, is arranged above the lower shell and is connected to the A drainage chamber is formed between the lower casing, the water suction port and the drainage port are spatially connected to the drainage chamber, and the main casing has a motor chamber and an overflow chamber; the drainage chamber is provided with a drainage blade , The motor compartment contains a motor, the overflow compartment is located below the motor compartment, and the main housing has a bottom plate, the bottom plate has a through hole and is spatially connected to the drain chamber, and the drain blade is It is connected with the drive shaft of the motor through the perforation; and a cover is arranged on the main casing to cover the motor compartment; characterized in that: a plurality of partition walls extend upward from the bottom plate of the main casing In the overflow chamber, the plurality of partition walls are arc-shaped and enclose the perforation to form a cylindrical structure, and the two aforementioned partition walls are separated by a predetermined distance to form a gap, and the plurality of partition walls are formed between The plurality of slits are arranged equiangularly with respect to the axis of the cylindrical structure, and the plurality of partition walls extend obliquely outward along an edge of each of the slits to form a plurality of baffles, each of the baffles spanning Each of the gaps extends to the other edge of each of the gaps, and each of the baffle plates is spaced a predetermined distance from the partition wall at the other edge of each of the gaps and forms a flow path that opens outward, wherein the plurality of partition walls enclose The space is spatially communicated with the outside through the plurality of gaps through the plurality of flow channels; a plurality of baffles are extended upward from the bottom plate of the main casing, and each baffle is located in each of the gap and the perforation corresponding to each of the gap. And a baffle and its corresponding gap are separated by a predetermined distance without closing the gap; the main housing has an outer wall that surrounds the cylindrical structure formed by the plurality of partition walls An outer ring area is formed between the cylindrical structures, the outer wall is provided with a plurality of overflow holes, and the bottom end of the hole edge of the plurality of overflow holes is located on the bottom plate of the main housing and is in spatial communication with the outer ring area. According to item 1 of the scope of patent application, the drainage pump with a sound-absorbing shell, wherein: the height of the plurality of partition walls is the same, and the height of the plurality of deflectors is the same as that of the plurality of partition walls, and the height of the plurality of baffles is the same The walls are the same, and the bottom of the motor abuts against the plurality of partition walls, the plurality of baffles and the top edge of the plurality of deflectors. According to the second item of the scope of patent application, the drainage pump with a silencing shell, wherein: among the plurality of partition walls, some of the partition walls extend upward to form at least two convex columns; the bottom of the motor has at least two recesses, and the motor When the bottom abuts against the plurality of partition walls and the top edge of the plurality of deflectors, the at least two convex columns are embedded in the at least two recesses. According to the first item of the scope of patent application, the drainage pump with a silencing shell, wherein: each of the overflow holes is arranged close to each of the deflectors, and the proximity here means that one overflow hole is located on two adjacent Among the deflectors, one of the deflectors is closer. According to the first item of the scope of patent application, the drainage pump with a silencing shell, wherein: the plurality of baffles are arc-shaped. According to the first item of the scope of patent application, the drainage pump with a silencing shell, wherein: the plurality of baffles extend and are arranged in a clockwise direction relative to the axis of the cylindrical structure. According to the first item of the scope of patent application, the drainage pump with a silencing shell, wherein: the lateral width of each baffle is not less than the width of the gap. According to the first item of the scope of patent application, a drainage pump with a sound-absorbing housing, wherein: the cover system extends outward and downward with a plurality of hooks, the outer surface of the main housing is provided with a plurality of clamping blocks, and the cover system is hooked by the plurality of hooks The plurality of clamping blocks are fixed to the main housing; each of the overflow holes is correspondingly located below each of the clamping blocks.

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