TWI692583B - Drainage pump with silencer shell - Google Patents

Abstract

A drainage pump with a sound-dampening casing, comprising: a lower casing; a main casing; a drainage blade; a motor; and a cover body, the cover is arranged on the main casing; wherein, the main casing A plurality of partition walls and a plurality of baffles extend upward from the bottom plate, and a gap is formed between two or more of the foregoing partition walls by a predetermined distance, and the plurality of partition walls extend diagonally outward along an edge of each of the slits to form a plurality of deflectors , Each of the deflectors is separated from the corresponding partition wall of the other edge by a predetermined distance to form a flow channel opening outward; each baffle is located between each of the slit and the perforation; the main housing has an outer wall An outer ring area is formed between the cylindrical structure formed by the plurality of partition walls and the cylindrical structure, and the outer wall has a plurality of overflow holes.

Description

Drainage pump with silencer shell

The invention relates to a drainage device, in particular to a drainage pump with a sound-absorbing shell used in an air-conditioning device.

China’s patent No. 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 and inner cylinder that supports the motor. The drainage slit provided in the outer cylinder portion has a guide member that guides residual water to the outside; the aforementioned conventional patent also discloses that the drainage slit of the cover portion has a guide member that guides the residual water to the outside. Although this case can cover the inner cylinder gap of the inner cylinder part by the outer cylinder 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 discharging residual water.

China’s Patent No. I612221 discloses a drainage pump for air conditioners. The main point of this case is to use a plurality of slits provided in the cylindrical body of the lower casing of the motor, and a deflector spanning the slits. , To form an outward flow channel, in order to achieve the effect of shortening the drainage path. However, although the technology of this case shortened the drainage path, in actual use, it was found that although the deflector of this case can block the sound in the cylindrical body frontally, the sound will still be transmitted outward through the plurality of slits Out, its noise reduction effect is still limited.

In the aforementioned known technology, a drain pump housing with a noise reduction and noise reduction effect has a long drain path, and a drain pump housing with a short drain path has a large noise. From this, it can be seen that the current known technologies cannot take into account the problems of noise reduction and shortening the drainage path.

In order to solve the above-mentioned problems, the present invention provides a drainage pump with a sound-dampening housing, which can take into account the effects of sound-dampening and noise reduction and shortening the drainage path. The invention provides a drainage pump with a sound-dampening casing, which includes: a lower casing, a water suction port formed at the bottom, and a drainage port formed at the side; a main casing, substantially cylindrical, provided on the lower casing A drain chamber is formed above and with the lower case, the water suction port and the drain port are spatially connected to the drain chamber, and the main case has a motor compartment and an overflow compartment; the drain A drain blade is arranged in the room, a motor is housed in the motor compartment, the overflow compartment is located below the motor compartment, and the main housing has a bottom plate with a perforation to communicate with the drain room in space , The drain blade is connected to the drive shaft of the motor through the perforation; and a cover body is provided on the main housing to cover the motor compartment; wherein, the bottom plate of the main housing extends upward A plurality of partition walls 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 or more of the foregoing partition walls by a predetermined distance to form a gap. The plurality of slits formed between them are arranged at an equal angle with respect to the axis of the cylindrical structure, and the plurality of partition walls extend diagonally outward along one edge of each of the slits to form a plurality of deflectors, each of the diversion The plate extends across each of the gaps to the other edge of each of the gaps, and each of the deflectors is separated from the partition wall of the other edge of each of the gaps by a predetermined distance and forms a flow channel opening outward, wherein the plurality of partition walls The enclosed space is spatially communicated with the outside world through the plurality of flow channels through the plurality of slits; a plurality of baffles extend upward from the bottom plate of the main housing, each baffle is located in each of the slits corresponding to each of the slits Between the perforation, and a gap between the baffle and a corresponding one of the gaps 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 region is formed between the cylindrical structure and the outer wall. The outer wall has a plurality of overflow holes. The bottom ends of the hole edges of the plurality of overflow holes are located on the bottom plate of the main housing, and are spatially spaced from the outer ring region Connected.

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

Furthermore, if the overflow hole of the present invention is arranged close to each of the deflectors, the term “close” here means that one of the overflow holes is adjacent to one of the two deflectors, which is closer to it. As long as the deflector is 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 simultaneously take into account the dual effects of shortening the flow path and reducing noise, and has an improvement in efficiency compared to the aforementioned conventional technology.

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

As shown in FIGS. 1 to 6, a preferred embodiment of the present invention provides a drain pump 10 with a sound-absorbing housing, which is mainly composed of a lower housing 11, a main housing 21, and a cover 31 ,among them:

The lower casing 11 has a water inlet 12 at the bottom and a water outlet 14 at the side.

The main casing 21 is substantially cylindrical and is disposed above the lower casing 11 and forms a drainage chamber 18 between the lower casing 11. The water suction port 12 and the drainage port 14 are all spatially connected In the drainage chamber 18, the main housing 21 has a motor chamber 22 and an overflow chamber 24. The drainage chamber 18 is provided with a drainage blade 19, a motor 23 is accommodated in the motor chamber 22, the overflow chamber 24 is located below the motor chamber 22, and the main housing 21 has a bottom plate 211, the bottom plate 211 has a perforation 212 to communicate with the drainage chamber 18 in space. The drainage blade 19 is connected to the drive shaft of the motor 23 through the perforation 212. Since the motor 23 has a drive shaft, it is common knowledge, so it is not to be tolerated 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 compartment 22. The cover body 31 extends a plurality of hook portions 313 outwards and downwards, and is fixed to the main housing 21 by hooking the plurality of clamping blocks 213 with 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 and are located in the overflow chamber 24. The plurality of partition walls 26 are arc-shaped and surround the perforation 212 to form a cylindrical structure, and two A gap 27 is formed between the two partition walls 26 by a predetermined distance, the plurality of gaps 27 formed between the plurality of partition walls 26 are arranged at an equal angle with respect to the axis of the cylindrical structure, and the plurality of partition walls 26 along an edge of each of the slits 27 extends obliquely outward to form a plurality of deflectors 261, each of the deflectors 261 in this embodiment is arranged in an arc shape, and extends across each of the slits 27 to each At the other edge of the slit 27, each of the deflectors 261 is separated from the partition wall 26 at the other edge of the slit 27 by a predetermined distance 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 in spatial communication with the outside through the plurality of flow channels 271. The plural deflectors 261 extend clockwise with respect to the axis of the cylindrical structure and are arranged.

Next, a plurality of baffles 25 extend upward from the bottom plate 211 of the main housing 21, each baffle 25 corresponds to each of the slits 27 and is located between each of the slits 27 and the perforation 212, and a baffle 25 and its Correspondingly, the 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 slits 27, but will be blocked by the plurality of baffles 25. Therefore, in terms of installation, the lateral width of each baffle 25 may be set to be no 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.

In addition, the main housing 21 has an outer wall 28 that surrounds the cylindrical structure formed by the plurality of partition walls 26 and forms an outer ring region 29 with the cylindrical structure, the outer wall 28 has a plurality of overflows In this embodiment, three holes are taken as an example. The plurality of overflow holes 281 are correspondingly located under each of the clamping blocks 213 in the installation position. This is because the mold is provided for easy opening of the mold, so the overflow The hole 281 is provided at a position corresponding to the vertical direction of the block 213. The bottom edges of the plurality of overflow holes 281 are located on the bottom plate 211 of the main housing 21 and are in spatial communication with the outer ring area 29. In addition, each of the overflow holes 281 is disposed close to each of the deflectors 261, and the close here means that one of the overflow holes 281 is between two adjacent deflectors 261, which is closer to one of them The deflector 261 will not be located in the middle of the two.

As shown in FIG. 6, in actual implementation, the plurality of partition walls 26 may be set to have the same height, and the height of the plurality of deflectors 261 is the same as that of 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, and the bottom of the motor 23 is pressed against the top edges of the plurality of partition walls 26, the plurality of baffles 25, and the plurality of deflectors 261, that is, the height of the plurality of partition walls 26 is It is the height of the overflow chamber 24, and the top of the plurality of partition walls 26 is the motor chamber 22. In addition, as shown in FIG. 3, in the plurality of partition walls 26, some of the partition walls 26 extend upward to form two convex columns 262, and the bottom of the motor 23 has two recesses 232, and the bottom of the motor 23 resists When the top edges of the plurality of partition walls 26 and the plurality of deflectors 261, the two convex posts 262 are embedded in the two concave holes 232, so as to produce a positioning effect. The number of the convex posts 262 and the concave holes 232 can be more than two, thereby increasing the positioning effect.

The heights of the aforementioned plurality of partition walls 26 and the baffle 25 can also be set to be different from each other, just to pay attention to the stability of the supporting motor 23.

The structure of the present invention has been described above, and then the operating state of the present invention will be described.

As shown in FIG. 2, under normal operating conditions, the motor 23 drives the drain blade 19 to rotate, thereby draining the water in the drain chamber 18 from the drain opening 14. Under normal circumstances, the drainage port 14 is usually connected to a drainage pipe (not shown in the figure) to drain the water outwards. Since connecting the drainage pipe is a very well-known technology, the capacity is no longer shown in the diagram .

As shown in FIG. 2 and FIG. 3 in conjunction with FIG. 5 and FIG. 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 reverse flow Return to the drainage chamber 18. Because the drainage vane 19 is provided in the drainage chamber 18, the water flowing backward will not enter the drainage chamber 18 too quickly, but enter slowly, and then enter the circle of the overflow chamber 24 through the perforation 212 Inside the tubular structure. The water located in the cylindrical structure will flow out through the plurality of slits 27 and then through the plurality of flow channels 271 to the outer ring region 29. Then, by the overflow hole 281 being close to the deflector 261, that is, close to the 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.

When deciding the number of the overflow holes 281, it can be determined according to actual needs. In this case, the three overflow holes 281 close to the three deflectors 261 are enough to exert the effect of overflow and drainage, so there is no need Set four overflow holes 281. In the case of the three overflow holes 281 in this case, each of the overflow holes 281 is still close to an opening of the flow channel 271, which can exert the effect of shortening the flow channel 271, and further, can quickly drain the water, making the counter current The water does not quickly accumulate in the cylindrical structure because it cannot be discharged, and the water level rises to hurt the motor 23. Of course, if it is decided to provide four overflow holes, the corresponding relationship between the overflow holes 281 and the deflectors 261 in FIG. 5 of the present case can be used to set the respective overflow holes to the deflectors 261.

It can be seen from the above that the baffle 25 in this case blocks the effect of the sound directly passing through the slit 27, and the complex baffle 261 can positively block the sound passing through the slit 27. There is also an outer wall 28 of the main casing 21 outside the flow plate 261. The outer wall 28 can also play the role of blocking sound. Therefore, the plurality of deflectors 261 and the outer wall 28 can exert multiple noise isolation effects, which reduces The noise effect is excellent. In addition, due to the arrangement relationship of the overflow hole 281 close to the deflector 261 in this case, it still has the effect of shortening the flow path 271 compared with the conventional technology, so that the water located in the overflow chamber 24 can quickly flow out. 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. Compared with the aforementioned conventional technology, it has an improvement in efficiency.

10: Drainage pump with silencer shell 11: Lower case 12: Suction port 14: Drain 18: Drainage room 19: Drainage blade 21: Main housing 211: bottom plate 212: Piercing 213: card block 22: Motor room 23: Motor 232: Pocket 24: overflow compartment 25: bezel 26: Partition 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 of Figure 5.

10: Drainage pump with silencer shell

11: Lower case

14: Drain

18: Drainage room

19: Drainage blade

21: Main housing

211: bottom plate

212: Piercing

213: card block

22: Motor room

24: overflow compartment

25: bezel

26: Partition

261: Deflector

262: convex column

27: Gap

271: runner

28: outer wall

281: overflow hole

29: Outer ring area

31: Cover

313: Hook

Claims (8)

A drainage pump with a sound-dampening housing includes: a lower housing, a water suction port is formed at the bottom, and a drainage port is formed at the side; a main housing, substantially cylindrical, is provided above the lower housing, and is connected with the A drainage chamber is formed between the lower shells, 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 perforation to spatially communicate with the drain chamber, the drain blade is Connected to the drive shaft of the motor through the perforation; and a cover body, which is provided on the main housing and covers the motor compartment; characterized in that a plurality of partition walls extend upward from the bottom plate of the main housing And 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 or more of the foregoing partition walls by a predetermined distance, formed between the plurality of partition walls The plurality of slits are arranged at an equal angle with respect to the axis of the cylindrical structure, and the plurality of partition walls extend diagonally outward along one edge of each of the slits to form a plurality of deflectors, each of the deflectors spans Each of the slits extends to the other edge of each of the slits, and each of the baffles is separated from the partition wall of the other edge of the slit by a predetermined distance and forms a flow channel opening outward, wherein the plurality of partition walls enclose The space is spatially communicated with the outside world through the plurality of channels through the plurality of slots; a plurality of baffles extend upward from the bottom plate of the main housing, and each of the baffles is located in the slot and the perforation corresponding to the slot And the baffle is separated from the corresponding one of the 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 and An outer ring region is formed between the cylindrical structures, and the outer wall has a plurality of overflow holes. The bottom ends of the hole edges of the plurality of overflow holes are located on the bottom plate of the main casing, and are spatially communicated with the outer ring region. The drainage pump with a sound-absorbing shell according to item 1 of the patent application scope, 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 as the plurality of partitions The walls are the same, and the bottom of the motor bears against the plurality of partition walls, the plurality of baffles, and the top edges of the plurality of deflectors. According to item 2 of the patent application scope, a drainage pump with a sound-absorbing housing, wherein: in 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, the motor When the bottom is 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 item 1 of the patent application scope, a drainage pump with a sound-dampening housing, wherein: each of the overflow holes is arranged close to each of the deflectors, and the proximity here means that one of the overflow holes is adjacent to the two Among the deflectors, it is closer to one of the deflectors. According to item 1 of the patent application scope of the drainage pump with a sound-absorbing housing, wherein: the plurality of deflectors are arc-shaped. According to the first item of the patent application scope of the drainage pump with a sound-absorbing housing, wherein: the plurality of deflectors extends clockwise with respect to the axis of the cylindrical structure and is arranged. According to the first paragraph of the patent application scope of the drainage pump with a sound-absorbing housing, wherein: the lateral width of each baffle is not less than the width of the gap. According to the first item of the patent application scope, a drainage pump with a sound-dampening housing, wherein: the cover system extends a plurality of hooks downwards, the outer surface of the main housing is provided with a plurality of clamping blocks, the cover system is hooked by the plurality of hooks The plurality of clamping blocks are held and fixed to the main casing; each of the overflow holes is correspondingly located below each of the clamping blocks.

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