JP2020169639A - Drainage pump with sound insulation function - Google Patents

Abstract

To provide a drainage pump with a sound insulation function.SOLUTION: 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 a bottom plate 211 of the housing. The plurality of slits are formed at a prescribed distance between the two spacers. Each of the plurality of water flow guide plates is formed by extending outward and diagonally from the spacer along an edge portion of the slit. The plurality of water flow guide plates form a flow path having an opening facing outward at a prescribed distance from the spacer located at another edge portion of the slit. Each of the plurality of plate-shaped stoppers is located between the slit and a bore 212. The outer wall surface surrounds the outside of a cylindrical structure composed of the plurality of spacers, and an annular space is formed between the outer wall surface and the cylindrical structure. The outer wall surface has a plurality of overflow holes 281.SELECTED DRAWING: Figure 3

Description

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

The drainage pump for an air conditioner published in Patent Document 1 has a lid arranged below the housing of the motor, a cylindrical outer cylinder portion and an inner cylinder portion that support the motor, and for guiding residual water to the outside. It features a guide member arranged in the drainage slit of the outer cylinder.
The proposal discloses that the guiding member is arranged not only in the drainage slit of the outer cylinder portion but also in the drainage slit of the lid in order to guide the residual water to the outside. In the plan, the gap between the inner cylinders can be shielded by the outer cylinders, and the noise generated by the operation of the motor can be partially blocked, but the residual water discharge treatment is performed because the drainage route is too long. It has the problem of increasing difficulty.

The drainage pump for an air conditioner published in Patent Document 2 is drained by a plurality of slits formed in a cylindrical body below the motor case and an outward flow path composed of a water flow guide plate straddling the plurality of slits. It is characterized by shortening the route.
Even if the plan can shorten the drainage route 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 through a plurality of slits, so that the noise suppression effect is effective. Limited.

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

Chinese Patent No. CN104514725A Taiwan Patent I612221

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

To solve the above-mentioned problems, the sound-insulating drainage pump includes a holder, a housing and a lid. The holder has a water inlet formed at the bottom and a drainage port formed at the side surface. The housing has a cylindrical shape and is arranged above the holder to form a drainage chamber between the housing and the holder. The water inlet and drain are connected to the drain chamber. The housing has a motor containment chamber and an overflow containment chamber. The drainage impeller is placed in the drainage chamber. The motor is stored in the motor storage chamber. The overflow containment chamber is located below the motor containment 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 shafts of the motor are connected to each other by perforations. The lid is placed in the housing and covers the motor containment chamber. The housing also 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 storage chamber to surround the perforations to form a cylindrical structure. The plurality of slits are formed at a predetermined distance between the two spacers, and are arranged so as to be equiangular with respect to the axial center of the cylindrical structure. The plurality of spacers has a plurality of water flow guide plates. Each of the plurality of water flow guide plates is formed by extending outward and diagonally from the spacer along the edge portion of the slit, and extends across the slit to another edge portion 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. The space surrounded by a plurality of spacers is connected to the outside by a plurality of slits and a plurality of flow paths. The housing also has a plurality of plate-shaped stoppers and an outer wall surface. The plurality of plate-shaped stoppers are formed so as to extend upward from the bottom plate of the housing, and are respectively located between the slit and the perforation corresponding to the slit. The plate-shaped stopper keeps the slit open at a predetermined distance from the corresponding slit. 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. The bottom of the plurality of overflow holes is located on the bottom plate of the housing and is connected to the annular space.

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

More specifically, if the overflow hole is placed near the water flow guide plate, that is, if the overflow hole is placed between two adjacent water flow guide plates and near one of the water flow guide plates, the flow will flow as compared with the conventional technique. Shorter roads and easier drainage. That is, as compared with the conventional technique, the present invention can simultaneously exert 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 which shows the drainage pump with a sound insulation function by one Embodiment of this invention. It is an exploded perspective view which shows the drainage pump with a sound insulation function by one Embodiment of this invention. It is an exploded perspective view which shows the internal structure of the housing of the drainage pump with a sound insulation function by one Embodiment of this invention. It is a perspective view which shows the bottom part of the motor of the drainage pump with a sound insulation function by one Embodiment of this invention. It is a top view which shows the internal structure of the housing of the drainage pump with a sound insulation function by one Embodiment of this invention. It is sectional drawing along the line 6-6 in FIG.

Hereinafter, the 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, the drainage pump 10 with a sound insulation function 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 absorption port 12 formed at the bottom and a drainage port 14 formed at the side surface.

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

The lid 31 is arranged in the housing 21 to cover the motor storage chamber 22 and has a plurality of hook portions 313. The plurality of hook portions 313 are formed so as to extend downward from the outside of the lid 31. The lid 31 is fixed to the housing 21 by hooking the plurality of hook portions 313 on the plurality of 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, are arranged in an arc shape in the overflow storage chamber 24, and surround the perforation 212 to form a cylindrical structure. The plurality of slits 27 are formed at a predetermined distance between the two spacers 26, and are arranged so as to be equiangular with respect to the axial center 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 outwardly and diagonally from the edge portion of each slit 27. In the present embodiment, the plurality of water flow guide plates 261 have an arc shape, and each extends across the slit 27 to another edge portion of the slit 27.
The plurality of water flow guide plates 261 form a flow path 271 having an opening facing outward at a predetermined distance from a spacer 26 located at another edge of the slit 27. The space surrounded by the plurality of spacers 26 is connected to the outside by a plurality of slits 27 and a plurality of flow paths 271. The plurality of water flow guide plates 261 are arranged clockwise around the axis of the cylindrical structure and spread out.

The housing 21 further has a plurality of plate-shaped stoppers 25. The plurality of plate-shaped stoppers 25 are formed so as to extend upward from the bottom plate 211 of the housing 21, and are respectively located between the slit 27 and the perforation 212 corresponding to the slit 27. The plate-shaped 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 exert a sound insulating 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 arranging 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 the present 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 outside of the cylindrical structure composed of the plurality of spacers 26, and the space between the outer wall surface 28 and the cylindrical structure becomes an annular space 29. 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 so as to correspond to each other for convenience when opening the mold.
The bottom of the plurality of overflow holes 281 is located in the bottom plate 211 of the housing 21, and is connected to the annular space 29. On the other hand, the overflow hole 281 is arranged near the water flow guide plate 261. Specifically, the overflow hole 281 is displaced from the central position between two adjacent water flow guide plates 261 and is arranged near one of the water flow guide plates 261.

As shown in FIG. 6, the heights of the plurality of spacers 26 may be matched during production. The heights of the plurality of water flow guide plates 261 and the heights of the plurality of spacers 26 may be matched. The heights of the plurality of plate-shaped stoppers 25 and the heights of the plurality of spacers 26 may be matched. The bottom of the motor 23 may be brought into contact with the tops of the plurality of spacers 26, the plurality of plate-shaped stoppers 25, and the plurality of water flow guide plates 261. That is, the heights of the plurality of spacers 26 and the overflow storage 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, among the plurality of spacers 26, a part of the spacers 26 has two convex column portions 262. The two convex column portions 262 are formed so as to extend upward from the top of the spacer 26. The motor 23 has two concave holes 232 at the bottom. When the bottom of the motor 23 abuts on the tops of the plurality of spacers 26 and the plurality of water flow guide plates 261, the two convex column portions 262 are fitted into the two concave holes 232 to produce a positioning effect. If the number of the convex pillar portion 262 and the concave hole 232 is two or more, the positioning effect can be improved.

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

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

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

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 drain impeller 19 is stopped. At this time, a part of the water in the drain pipe flows back into the drain chamber 18. Since the drainage impeller 19 is arranged in the drainage chamber 18, the backflow water slowly infiltrates into the drainage chamber 18 and flows from the perforation 212 into the cylindrical structure of the overflow storage chamber 24.
Subsequently, the water in the cylindrical structure flows from the plurality of slits 27 through the plurality of flow paths 271 into the annular space 29. Subsequently, 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 into the overflow hole 281 and continues. 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 adopted in this embodiment are arranged near the openings of the flow path 271 respectively, and in order to shorten the flow path 271 and realize quick drainage, the backflow water cannot be discharged and the inside of the cylindrical structure. It does not occur that the water level is raised and the motor 23 is damaged. 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 arranged with reference to the relative relationship between the overflow hole 281 and the plurality of water flow guide plates 261. They 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 is arranged outside the plurality of water flow guide plates 261 to produce a sound insulation effect. That is, in the present invention, the noise can be blocked multiple times by the plurality of water flow guide plates 261 and the outer wall surface 28, and the sound insulation effect can be improved.
On the other hand, as compared with the conventional technique, since the overflow hole 281 is arranged closer to 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 exert the effect of shortening the flow path and the effect of suppressing noise, and can improve the function.

10 Drainage pump with sound insulation function 11 Holder 12 Water intake port 14 Drainage port 18 Drainage chamber 19 Drainage impeller 21 Housing 211 Bottom plate 212 Perforation 213 Fitting part 22 Motor storage room 23 Motor 232 Concave hole 24 Overflow storage room 25 Plate-shaped stopper 26 Spacer 261 Water flow guide plate 262 Convex pillar part 27 Slit 271 Flow path 28 Outer wall surface 281 Overflow hole 29 Circular space 31 Lid 313 Hook part

To solve the above-mentioned problems, the sound-insulating drainage pump includes a holder, a housing and a lid. The holder has a water inlet formed at the bottom and a drainage port formed at the side surface. The housing has a cylindrical shape and is arranged above the holder to form a drainage chamber between the housing and the holder. The water inlet and drain are connected to the drain chamber. The housing has a motor containment chamber and an overflow containment chamber. The drainage impeller is placed in the drainage chamber. The motor is stored in the motor storage chamber. The overflow containment chamber is located below the motor containment 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 shafts of the motor are connected to each other by perforations. The lid is placed in the housing and covers the motor containment chamber. The housing also 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 storage chamber to surround the perforations to form a cylindrical structure. The plurality of slits are formed at a predetermined distance between the two spacers, and are arranged so as to be equiangular with respect to the axial center of the cylindrical structure. The plurality of spacers has a plurality of water flow guide plates. The plurality of water flow guide plates are formed by extending in an arc shape from the end of one of the two spacers sandwiching the slit toward the outside of the cylindrical structure so as to straddle the slit . The opening forms an outward flow path between the spacer and the other spacer . The plurality of water flow guide plates have an opening forming an outward flow path between the spacer and the other spacer, and the opening is an outward flow at a predetermined distance from the other spacer. Forming a road . The space surrounded by a plurality of spacers is connected to the outside by a plurality of slits and a plurality of flow paths. The housing also has a plurality of plate-shaped stoppers and an outer wall surface. The plurality of plate-shaped stoppers are formed so as to extend upward from the bottom plate of the housing, and are respectively located between the slit and the perforation corresponding to the slit. The plate-shaped stopper keeps the slit open at a predetermined distance from the corresponding slit. 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. The bottom of the plurality of overflow holes is located on the bottom plate of the housing and is connected to the annular space.

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, are arranged in an arc shape in the overflow storage chamber 24, and surround the perforation 212 to form a cylindrical structure. The plurality of slits 27 are formed at a predetermined distance between the two spacers 26, and are arranged so as to be equiangular with respect to the axial center 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 of one of the two spacers 26 sandwiching the slit 27. The opening forms an outward flow path at 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 clockwise around the axis of the cylindrical structure and spread out.

Claims (8)

With holder, housing, and lid,
The holder has a water inlet formed on the bottom and a drainage port formed on the side surface.
The housing has a cylindrical shape and is arranged above the holder to form a drainage chamber between the housing and the holder, and the drainage chamber is connected to the water suction port and the drainage port.
The housing has a motor containment chamber and an overflow containment chamber, a drain impeller is arranged in the drainage chamber, the motor is housed in the motor containment chamber, and the overflow containment chamber is located below the motor containment chamber. ,
The housing has a bottom plate and a perforation formed in the bottom plate, the perforation is connected to the drainage chamber, and the drainage impeller and the drive shaft of the motor are connected to each other by the perforation.
The lid is placed in the housing and covers the motor containment chamber.
The housing further has a plurality of spacers and a plurality of slits, the plurality of spacers are formed extending upward from the bottom plate of the housing, and are arranged in an arc shape in the overflow storage chamber to surround the perforation. It has a cylindrical structure, and the plurality of slits are formed at 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 which is formed by extending outward and diagonally from the spacer along the edge portion of the slit, and another one of the slits straddling the slit. The plurality of water flow guide plates extend to one edge portion, and the plurality of said water flow guide plates form a flow path with an opening facing outward at a predetermined distance from the spacer located at another edge portion of the slit. The space surrounded by the spacer is connected to the outside by the plurality of slits and the plurality of flow paths.
The housing further has a plurality of plate-shaped stoppers and an outer wall surface, and the plurality of plate-shaped stoppers are formed so as to extend upward from the bottom plate of the housing, and the slits and the perforations correspond to the slits, respectively. The plate-shaped stopper is located between the two to keep the slit open at a predetermined distance from the corresponding slit, and the outer wall surface surrounds the outside 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 plurality of overflow holes are characterized in that the bottom thereof is located on the bottom plate of the housing and is 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, and the plurality of plate-shaped stoppers and the plurality of spacers have the same height. The drainage pump with a sound insulation function according to claim 1, wherein the motor has a bottom portion abutting on the plurality of spacers, the plurality of plate-shaped stoppers, and the tops of the plurality of water flow guide plates. In the plurality of spacers, a part of the spacers has at least two convex pillars, the convex pillars are formed extending upward from the top of the spacer, and the motor has at least two concave holes in the bottom. The motor is characterized in that at least two convex columns are fitted into at least two concave holes when the bottom of the motor abuts on the tops of the spacers and the water flow guide plates. The drainage pump with a sound insulation function according to claim 2. 1. The overflow hole is arranged near the water flow guide plate, that is, between two adjacent water flow guide plates and near one of the water flow guide plates. Drainage pump with sound insulation function described in. The drainage pump with a sound insulation function according to claim 1, wherein the plurality of the 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 spread in a clockwise direction about the axis of the cylindrical structure. The drainage pump with a sound insulation function according to claim 1, wherein the width of the plurality of plate-shaped stoppers is the same as or larger than the width of the slit. The lid has a plurality of hook portions, the plurality of the hook portions extend downward from the outside of the lid, the housing further has a plurality of fitting portions on the outer surface, and the lid has a plurality of fitting portions. The first aspect of the present invention is characterized in that the hook portion is fixed to the housing by being hooked on the plurality of fitting portions, and the plurality of overflow holes are respectively arranged below positions corresponding to the fitting portions. The described drainage pump with sound insulation function.

Images