JP6750906B1 - Drainage pump with sound insulation function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage pump having a sound insulation function. A housing 21 of a drainage pump 10 with a sound insulation function has a plurality of spacers 26, a plurality of plate-shaped stoppers 25, a plurality of slits 27, a plurality of water flow guide plates 261 and an outer wall surface 28. The plurality of spacers and the plurality of plate-shaped stoppers are formed so as to extend upward from the bottom plate 211 of the housing. The plurality of slits are formed at a predetermined distance between the two spacers. Each of the plurality of water flow guide plates is formed by extending outwardly and diagonally from the spacer along the edge of the slit. The plurality of water flow guide plates form a flow path having an opening facing outward at a predetermined distance from a spacer located at another edge of the slit. Each of the plurality of plate-shaped stoppers is located between the slit and the perforation 212. The outer wall surface surrounds the outside of a cylindrical structure composed of a plurality of spacers and forms an annular space between the outer wall surface and the cylindrical structure. The outer wall surface has a plurality of overflow holes 281. [Selection diagram] Fig. 3

Description

The present invention relates to a drainage device, and more particularly to a drainage pump with a sound insulation function used in an air conditioner.

A drainage pump for an air conditioner disclosed in Patent Document 1 has a lid arranged below a housing of a motor, a cylindrical outer cylinder portion and an inner cylinder portion that support the motor, and guides residual water to the outside. The guide member is arranged in the drainage slit of the outer tubular portion.
The plan discloses disposing a guide member not only in the drainage slit of the outer tubular portion but also in the drainage slit of the lid in order to guide the residual water to the outside. Although the plan can block the gap between the inner cylinder part by the outer cylinder part and partially block the noise generated due to the operation of the motor, the drainage path is too long and It has the problem of increasing difficulty.

The drainage pump for an air conditioner disclosed in Patent Document 2 is drained by a plurality of slits formed in a cylindrical body below a motor case and an outward flow passage formed of a water flow guide plate straddling the plurality of slits. The feature is to shorten the route.
Even if the plan can shorten the drainage path and block the sound in the tubular body by the water flow guide plate, the sound in the tubular body is leaked to the outside from a plurality of slits, so that the noise suppressing effect is not achieved. Limited

In the above-mentioned prior art, if the sound insulation effect is good, the drainage path of the drainage pump housing is relatively long. On the other hand, if the drainage path is relatively short, the noise of the drainage pump housing is relatively loud. Therefore, current technology cannot achieve sound insulation and shortening of drainage path at the same time.

Chinese Patent CN104514725A Taiwan Patent No. I612221

It is a main object of the present invention to provide a drainage pump with a sound insulation function that can not only block noise but also shorten the drainage path.

In order to solve the above-mentioned subject, a drainage pump with a sound insulation function is provided with a holder, a housing, and a lid. The holder has a water inlet formed at the bottom and a water outlet formed at the side surface. The housing has a cylindrical shape and is disposed above the holder to form a drainage chamber between the housing and the holder. The water intake and drain are connected to the drainage room. The housing has a motor storage room and an overflow storage room. The drainage impeller is arranged in the drainage chamber. The motor is stored in the motor storage room. The overflow storage chamber is located below the motor storage chamber. The housing has a bottom plate and perforations formed in the bottom plate. The perforation leads to the drainage chamber. The drain impeller and the drive shaft of the motor are interconnected by perforations. The lid is disposed on the housing and covers the motor storage chamber. The housing further has a plurality of spacers and a plurality of slits. The plurality of spacers are formed so as to extend upward from the bottom plate of the housing and are arranged in an arc shape in the overflow chamber so as to surround the perforations and have a cylindrical structure. The plurality of slits are formed with a predetermined distance between two spacers, and are arranged so as to be equiangular with the axis of the cylindrical structure. The plurality of spacers have a plurality of water flow guide plates. A plurality of water flow guide plates, each of the two spacers sandwiching the slit, from the end of one of the spacers, so as to straddle the slit, is formed to extend in an arc shape toward the outside of the cylindrical structure , The opening forms an outward flow path with the other spacer . The plurality of water flow guide plates have an opening forming an outward flow path with the other spacer, and a predetermined distance is provided between the water flow guide plate and the other spacer to allow the opening to flow outward. Forming a road . The space surrounded by the plurality of spacers is connected to the outside by a plurality of slits and a plurality of flow paths. The housing further has a plurality of plate-shaped stoppers and an outer wall surface. The plurality of plate-shaped stoppers are formed to extend upward from the bottom plate of the housing and are located between the slits and the perforations corresponding to the slits. The plate-like stopper keeps the slit in an open state at a predetermined distance from the corresponding slit. The outer wall surface surrounds the outer side of the cylindrical structure composed of a plurality of spacers to form an annular space between the outer wall surface and the cylindrical structure. The outer wall surface has a plurality of overflow holes. The bottoms of the plurality of overflow holes are located on the bottom plate of the housing and are connected to the annular space.

As described above, the present invention can exert a good noise suppressing effect due to the structure in which sound is multiple-blocked by the outer wall surface, the plate-shaped stopper and the water flow guide plate.

More specifically, if the overflow hole is arranged near the water flow guide plate, that is, the overflow hole is arranged between two adjacent water flow guide plates and near one of the water flow guide plates, the flow hole will be compared with the conventional technology. The path is shorter and drainage is easier. That is, as compared with the conventional technique, the present invention can simultaneously exhibit the flow path shortening effect and the noise suppressing effect by the arrangement method described above, and can improve the function.

It is a perspective view showing a drainage pump with a sound insulation function by one embodiment of the present invention. It is an exploded perspective view showing a drainage pump with a sound insulation function by one embodiment of the present invention. It is an exploded perspective view showing the internal structure of the housing of the drainage pump with a sound insulation function by one embodiment of the present invention. It is a perspective view showing the bottom of the motor of the drainage pump with a sound insulation function by one embodiment of the present invention. It is a top view showing the internal structure of the housing of the drainage pump with a sound insulation function by one embodiment of the present invention. FIG. 6 is a sectional view taken along the line 6-6 in FIG. 5.

Hereinafter, a drainage pump with a sound insulation function according to the present invention will be described with reference to the drawings.

(One embodiment)
As shown in FIGS. 1 to 6, a sound-insulating drainage pump 10 according to an embodiment of the present invention includes a holder 11, a housing 21, and a lid 31.

The holder 11 has a water inlet 12 formed on the bottom and a drain 14 formed on the side surface.

The housing 21 has a cylindrical shape and is disposed above the holder 11 to form a drainage chamber 18 between the housing 21 and the holder 11. The water suction port 12 and the drainage port 14 are connected to a drainage chamber 18. The housing 21 has a motor storage chamber 22 and an overflow water storage chamber 24. The drainage impeller 19 is arranged in the drainage chamber 18. The motor 23 is stored in the motor storage chamber 22. The overflow storage chamber 24 is located below the motor storage chamber 22.
The housing 21 has a bottom plate 211, a perforation 212, and a plurality of fitting portions 213. The perforations 212 are connected to the drainage chamber 18 formed in the bottom plate 211. The drain impeller 19 and the drive shaft of the motor 23 are connected to each other by a hole 212. Since the motor 23 and the drive shaft are well known, detailed description will be omitted. The plurality of fitting portions 213 are formed on the outer surface of the housing 21.

The lid 31 is disposed in the housing 21, covers the motor storage chamber 22, and has a plurality of hook portions 313. The plurality of hook portions 313 are formed to extend downward from the outside of the lid 31. The lid 31 is fixed to the housing 21 by hooking the hook portions 313 on the fitting portions 213.

The housing 21 further has a plurality of spacers 26 and a plurality of slits 27. The plurality of spacers 26 are formed so as to extend upward from the bottom plate 211 of the housing 21, and are arranged in an arc shape in the overflow storage chamber 24 to surround the perforations 212 and have a cylindrical structure. The plurality of slits 27 are formed with a predetermined distance between the two spacers 26, and are arranged so as to be equiangular with the axis of the cylindrical structure. The plurality of spacers 26 have a plurality of water flow guide plates 261. The plurality of water flow guide plates 261 are formed so as to extend in an arc shape toward the outside of the cylindrical structure so as to straddle the slit 27 from the end portion of one spacer 26 of the two spacers 26 sandwiching each slit 27. The opening forms an outward flow path with a predetermined distance from the other spacer.
Space surrounded by multiple spacers 26 leads to the outside by a plurality of slits 27 and a plurality of flow channels 271. The plurality of water flow guide plates 261 are arranged side by side in a clockwise direction around the axis of the cylindrical structure.

The housing 21 further has a plurality of plate-shaped stoppers 25. The plurality of plate-shaped stoppers 25 are formed to extend upward from the bottom plate 211 of the housing 21 and are located between the slits 27 and the perforations 212, corresponding to the slits 27. The plate-like stopper 25 keeps the slit 27 in an open state at a predetermined distance from the corresponding slit 27.
Since the plate-shaped stopper 25 can exhibit a sound insulation effect, the sound in the tubular structure is blocked by the plurality of stoppers 25 and does not leak from the plurality of slits 27. When disposing the plate-shaped stopper 25, the width of the plate-shaped stopper 25 may be the same as or larger than the width of the slit 27. In this embodiment, the plate-shaped stopper 25 and the slit 27 have the same width.

The housing 21 further has an outer wall surface 28. The outer wall surface 28 surrounds the outer side of the cylindrical structure composed of the plurality of spacers 26 to form an annular space 29 between the outer wall surface 28 and the cylindrical structure. The outer wall surface 28 has a plurality of overflow holes 281. In this embodiment, three overflow holes 281 are taken as an example. The plurality of overflow holes 281 are arranged below the positions corresponding to the plurality of fitting portions 213. More specifically, the fitting portion 213 and the overflow hole 281 are positioned above and below each other for convenience in opening the mold.
The bottoms of the plurality of overflow holes 281 are located on the bottom plate 211 of the housing 21 and are connected to the annular space 29. On the other hand, the overflow hole 281 is arranged near the water flow guide plate 261. In detail, the overflow hole 281 is arranged near one of the water flow guide plates 261 out of the central position between the two adjacent water flow guide plates 261.

As shown in FIG. 6, when manufacturing, the heights of the plurality of spacers 26 may be matched. The heights of the plurality of water flow guide plates 261 and the heights of the plurality of spacers 26 may be the same. The heights of the plurality of plate-shaped stoppers 25 and the heights of the plurality of spacers 26 may be the same. The bottom of the motor 23 may be brought into contact with the tops of the spacers 26, the plate-like stoppers 25, and the water flow guide plates 261. That is, the heights of the plurality of spacers 26 and the overflow chamber 24 are the same. The motor storage chamber 22 is located above the tops of the plurality of spacers 26.
As shown in FIG. 3, in the plurality of spacers 26, a part of the spacers 26 has two convex pillar portions 262. The two convex pillars 262 are formed to extend upward from the top of the spacer 26. The motor 23 has two concave holes 232 on the bottom. When the bottom of the motor 23 contacts the tops of the plurality of spacers 26 and the plurality of water flow guide plates 261, the two convex pillars 262 are fitted into the two concave holes 232 to produce a positioning effect. If the number of the convex pillar portions 262 and the concave holes 232 is two or more, the positioning effect can be improved.

The heights of the plurality of spacers 26 and the plurality of plate-shaped stoppers 25 may be different. It is only necessary to ensure the stability of the motor 23.

The above is a description of the configuration of the present invention. Next, the operation state of the present invention will be described.

As shown in FIG. 2, when the sound-insulating drainage pump 10 normally operates, the drainage impeller 19 is rotated by the driving force of the motor 23 to discharge the water in the drainage chamber 18 to the outside from the drainage port 14. The drainage port 14 is usually connected to a drainage pipe (not shown in the figure), and sucks water to the outside and causes it to flow out. Since the drainage pipe connection method is well known, the drawing is not shown.

As shown in FIGS. 2, 3, 5 and 6, when the power of the motor 23 is turned off or the operation of the motor 23 is stopped, the rotation of the drainage impeller 19 is stopped. At this time, a part of the water in the drainage pipe flows back to the drainage chamber 18. Since the drainage impeller 19 is arranged in the drainage chamber 18, the backflowed water slowly enters the drainage chamber 18 and flows from the perforations 212 into the cylindrical structure of the overflow water storage chamber 24.
Subsequently, the water in the cylindrical structure flows into the annular space 29 from the plurality of slits 27 through the plurality of flow paths 271. Then, since the overflow hole 281 is located near one water flow guide plate 261, that is, near the opening of the flow path 271, the water flowing out from the plurality of flow paths 271 rapidly flows to the overflow hole 281 and Can be leaked to the outside.

The number of overflow holes 281 may be determined according to the situation. In the present embodiment, since the three overflow holes 281 arranged near the three water flow guide plates 261 can sufficiently exert the overflow effect, it is not necessary to arrange the fourth overflow hole 281. The three overflow holes 281 used in the present embodiment are arranged near the opening of the flow path 271 to realize the shortening of the flow path 271 and quick drainage, so that the backward flow of water cannot be discharged and the inside of the cylindrical structure is prevented. It does not occur that the water level rises and the water level rises to damage the motor 23. On the other hand, when arranging the fourth overflow hole 281, as shown in FIG. 5, the overflow hole 281 and the plurality of water flow guide plates 261 are referred to by referring to the relative relationship between the overflow hole 281 and the plurality of water flow guide plates 261. It may be arranged so as to correspond to each other.

Summarizing the above, in the present invention, the plate-shaped stopper 25 can suppress sound from leaking from the slit 27. The plurality of water flow guide plates 261 can block the sound passing through the slit 27. The outer wall surface 28 of the housing 21 may be disposed outside the plurality of water flow guide plates 261 to produce a sound insulation effect. That is, according to the present invention, the plurality of water flow guide plates 261 and the outer wall surface 28 can block the noise in a multiple manner to improve the sound insulating effect.
On the other hand, compared with the conventional technique, since the overflow hole 281 is arranged near the water flow guide plate 261, the flow path 271 is shortened, and the water in the overflow storage chamber 24 can be quickly discharged. That is, as compared with the conventional technique, the present invention can simultaneously exhibit the flow path shortening effect and the noise suppressing effect and improve the function.

10 Drain Pump with Sound Insulation Function 11 Holder 12 Water Suction Port 14 Drain Port 18 Drain Chamber 19 Drain Impeller 21 Housing 211 Bottom Plate 212 Perforation 213 Fitting Part 22 Motor Storage Room 23 Motor 232 Recessed Hole 24 Overflow Chamber 25 Plate Stopper 26 Spacer 261 Water flow guide plate 262 Convex column portion 27 Slit 271 Flow path 28 Outer wall surface 281 Overflow hole 29 Annular space 31 Lid 313 Hook part

Claims (8)

A holder, a housing, and a lid,
The holder has a water inlet formed on the bottom and a water outlet formed on the side surface,
The housing has a cylindrical shape, and is disposed above the holder to form a drainage chamber between the holder, and the drainage chamber is connected to the water intake port and the drainage port,
The housing has a motor storage chamber and an overflow storage chamber, a drain impeller is disposed in the drain chamber, a motor is stored in the motor storage chamber, and the overflow storage chamber is located below the motor storage chamber. ,
The housing has a bottom plate and a perforation formed in the bottom plate, the perforation is connected to the drain chamber, and the drain impeller and the drive shaft of the motor are interconnected by the perforation.
The lid is disposed on the housing to cover the motor storage chamber,
The housing further has a plurality of spacers and a plurality of slits, the plurality of spacers are formed to extend upward from the bottom plate of the housing, and are arranged in an arc shape in the overflow storage chamber to surround the perforations. It becomes a cylindrical structure, the plurality of the slits are formed with a predetermined distance between the two spacers, and are arranged so as to be equiangular with respect to the axis of the cylindrical structure. It has a plurality of water flow guide plates, each of the plurality of water flow guide plates, from the end of one of the two spacers sandwiching the slit, from the end of one of the spacers, across the slit, outside the cylindrical structure. Is formed so as to extend in an arc shape toward the other side, the opening forms an outward flow path with a predetermined distance from the other spacer, and the space surrounded by the plurality of spacers is the plurality of slits. And connected to the outside by a plurality of the flow paths,
The housing further has a plurality of plate-shaped stoppers and an outer wall surface, the plurality of plate-shaped stoppers are formed to extend upward from the bottom plate of the housing, and each of the slits and the perforations correspond to the slit. Located between the plate-like stoppers and keeping the slits open at a predetermined distance from the corresponding slits, and the outer wall surface surrounds the outer side of the cylindrical structure composed of the plurality of spacers. An annular space is formed between the structure and the outer wall surface, and the outer wall surface has a plurality of overflow holes, the bottoms of the overflow holes are located on the bottom plate of the housing and are connected to the annular space. ,
Drainage pump with sound insulation function. The plurality of spacers have the same height, the plurality of water flow guide plates and the plurality of spacers have the same height, the plurality of plate-shaped stoppers and the plurality of spacers have the same height, and The drain pump with sound insulation function according to claim 1, wherein a bottom of the motor abuts a plurality of the spacers, a plurality of the plate-shaped stoppers, and tops of the plurality of water flow guide plates. Among the plurality of spacers, a part of the spacers has at least two convex columns, the convex columns are formed to extend upward from the top of the spacer, and the motor has at least two concave holes at the bottom. When the bottom of the motor abuts the tops of the plurality of spacers and the plurality of water flow guide plates, at least two of the convex pillars are fitted into at least two of the concave holes. The drainage pump with a sound insulation function according to claim 2. The plurality of overflow holes are respectively arranged near the water flow guide plate, that is, between the two adjacent water flow guide plates and one of them is near the water flow guide plate. Drainage pump with sound insulation function described in. The drainage pump with a sound insulation function according to claim 1, wherein the plurality of water flow guide plates have an arc shape. The drainage pump with a sound insulation function according to claim 1, wherein the plurality of water flow guide plates are arranged side by side in a clockwise direction around an axis of the cylindrical structure. The drainage pump with a sound insulation function according to claim 1, wherein a width of each of the plurality of plate-shaped stoppers is equal to or larger than a width of the slit. The lid has a plurality of hook portions, the plurality of hook portions are formed to extend downward from the outside of the lid, the housing further has a plurality of fitting portions on an outer surface, and the lid has a plurality of fitting portions. The hook portion is fixed to the housing by being hooked on a plurality of the fitting portions, and the plurality of overflow holes are arranged below the positions corresponding to the fitting portions, respectively. Drainage pump with sound insulation function described.

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