CN111788396A

CN111788396A - Mounting structure of draining pump

Info

Publication number: CN111788396A
Application number: CN201980009961.XA
Authority: CN
Inventors: 加藤友也; 久米义之; 杉野真圣
Original assignee: Fujikoki Corp
Current assignee: Fujikoki Corp
Priority date: 2018-03-09
Filing date: 2019-02-05
Publication date: 2020-10-16
Anticipated expiration: 2039-02-05
Also published as: JP2019157697A; WO2019171854A1; KR102355555B1; KR20200090895A; JP6923920B2; CN111788396B

Abstract

Provided is a drain pump mounting structure which can suppress propagation of vibration of a motor to a mounted body to which a drain pump is mounted, and which can achieve quietness during operation. The drain pump mounting structure is provided with a drain pump (1), and a mounting member (70) for mounting the drain pump (1) on a top plate (61) of an air conditioner (60), wherein the drain pump (1) is disposed below the top plate (61). The drain pump (1) is provided with a rotary blade (30), a housing (10) accommodating the rotary blade (30), a cover (20) mounted on the upper part of the housing (10), and a motor (40) accommodated in the cover (20) and rotating the rotary blade (30). The drain pump (1) is attached to the top plate (61) by an attachment member (70) so that the cover (20) is spaced apart from the top plate (61) by a distance (D).

Description

Mounting structure of draining pump

Technical Field

The present invention relates to a mounting structure of a drain pump for sucking water from a suction port and discharging the water from a discharge port by a rotary blade. More particularly, the present invention relates to a drain pump mounting structure suitable for quietness during operation.

Background

An air conditioner installed on a ceiling of a room includes a drain pan for receiving drain water condensed on a surface of an indoor heat exchanger, and a drain pump (drain pump) for draining the drain water in the drain pan.

Fig. 7 shows an example of a conventional drain pump described in patent document 1. Fig. 7(a) to (c) are a plan view, a front view, and a bottom view of a conventional drain pump in this order. The conventional drain pump 800 has a pump housing 810 that houses a rotary vane 830. The lower cover 840 is mounted on the upper portion of the pump housing 810. The motor 880 is provided on the upper portion of the lower housing 840, and the motor 880 is covered by the upper housing 850. An upper portion of the upper cover 850 is provided with an attachment portion 852 to be attached to the air conditioner 900 as an attached body.

Documents of the prior art

Patent document

Patent document 1 Japanese patent laid-open No. 2014-107893

Problems to be solved by the invention

In order to prevent the drain pump 800 from coming off when the conventional drain pump is attached to the air conditioner 900, the attachment portion 852 is fixed to the air conditioner 900 by a fixing member 890 such as a screw. Therefore, vibration generated by the rotation of the motor 880 may propagate from the mounting portion 852 to the air conditioner 900, thereby generating noise.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a drain pump mounting structure that can suppress propagation of vibration of a motor to a mounting object to which a drain pump is mounted, and can achieve quietness during operation.

Means for solving the problems

In order to solve the above problem, a drain pump mounting structure according to the present invention includes a drain pump, and at least one mounting member for mounting the drain pump to a top plate as a mounted body, and the drain pump is disposed below the top plate, the drain pump mounting structure including: the drain pump includes a rotary blade, a casing for housing the rotary blade, a cover mounted on an upper portion of the casing, and a motor housed in the cover for rotating the rotary blade, the mounting member includes a mounting member having a tip portion on an upper end side, the tip portion having a downward surface, the tip portion of the mounting member is inserted into a through hole provided in the top plate, the downward surface is hung on an upper edge portion of the through hole, and the drain pump is mounted to the top plate via the mounting member so that the cover is spaced apart from the top plate.

In the present invention, it is preferable that the drain pump is attached to the top plate in a hanging manner by the attachment member.

In the present invention, it is preferable that the drain pump is attached to the top plate by the attachment member so as to hang down by its own weight.

In the present invention, it is preferable that the distal end portion of the mounting member has a wide portion bulging outward, and the through hole of the top plate has: an insertion portion having a shape through which the distal end portion of the mounting member can be inserted; and a slit part connected to the insertion part and having a width smaller than that of the wide part.

In the present invention, it is preferable that the distal end portion of the mounting member has a wide portion bulging outward, and slits are formed to constitute a plurality of elastic pieces inserted into the through hole of the top plate in a state of being elastically deformed toward the center of the distal end portion.

In the present invention, it is preferable that the mounting member is separate from the cover, and the drain pump is mounted to the top plate by locking a lower end portion of the mounting member to the cover.

In the present invention, it is preferable that the lower end of the mounting member is inserted through a through hole provided in the cover and is hooked on an edge of the through hole.

In the present invention, it is preferable that the lower end portion of the mounting member has a wide portion bulging outward, and slits are formed to constitute a plurality of elastic pieces inserted into the through hole of the cover in a state of being elastically deformed toward the center of the lower end portion.

In the present invention, it is preferable that the mounting member is provided integrally with the cover.

In the present invention, it is preferable that the bending modulus of the mounting member is smaller than the bending modulus of at least one of the top plate and the cover.

Effects of the invention

According to the present invention, the drain pump is attached to the top plate as the attached body by the attachment member provided in the attachment member so that the cover is spaced apart from the top plate. Thus, since the cover of the drain pump does not contact the top plate, it is possible to prevent the vibration from being directly transmitted from the cover to the top plate. Therefore, the propagation of the vibration of the motor to the ceiling plate on which the drain pump is mounted can be suppressed, and quietness during operation can be achieved.

Drawings

Fig. 1 is a diagram showing a mounting structure of a drain pump according to a first embodiment of the present invention.

Fig. 2 is a front view, including a partial cross-section, of the drain pump of fig. 1.

Fig. 3 is a view illustrating an installation structure of the drain pump of fig. 1.

Fig. 4 is a diagram showing a mounting structure of a drain pump according to a second embodiment of the present invention.

Fig. 5 is a view illustrating an installation structure of the drain pump of fig. 4.

Fig. 6 is a diagram illustrating an installation structure of a drain pump according to a third embodiment of the present invention.

Fig. 7 is a diagram showing a mounting structure of a conventional drain pump.

Detailed Description

The drain pump mounting structure according to the present invention described below is characterized by including a drain pump and at least one mounting member for mounting the drain pump to a top plate as a mounted body, and the drain pump is disposed below the top plate. The drain pump includes a rotary vane, a housing accommodating the rotary vane, a cover mounted on an upper portion of the housing, and a motor accommodated in the cover and rotating the rotary vane. The drain pump is characterized in that the mounting member provided in the mounting member is mounted to the top plate so that the cover is spaced apart from the top plate.

(first embodiment)

Hereinafter, an installation structure of a drain pump according to a first embodiment of the present invention will be described with reference to fig. 1 to 3. The drain pump according to the first embodiment is used, for example, to discharge drain water accumulated in a drain pan of an indoor unit of an air conditioner to the outside. Of course, the use of the drain pump is not limited to the discharge of drain water, and the drain pump can be used to discharge or pump various liquids. The same applies to the second and third embodiments described later.

Fig. 1 is a diagram showing a mounting structure of a drain pump according to a first embodiment of the present invention. Fig. 1(a) is a plan view shown through the top plate, and fig. 1(b) and (c) are a front view and a bottom view. Fig. 2 is a front view including a partial cross section of the drain pump of fig. 1, and more particularly, a front view including a partial cross section of a lower portion of the drain pump taken along a plane passing through an axis of the drain pipe. Fig. 3 is a view illustrating an installation structure of the drain pump of fig. 1. Fig. 3(a) is a plan view seen from above the top plate, and the drain pump is indicated by a broken line. Fig. 3 b is an enlarged view of the vicinity of the through hole of the top plate (the elliptical portion of the one-dot chain line in fig. 3 a). Fig. 3(c) is an enlarged sectional view taken along line a-a of fig. 3 (b). In the description of the first embodiment, "up and down" corresponds to the up and down direction in fig. 1(a) and fig. 2.

The first embodiment is a structure in which the drain pump 1 is mounted to the top plate 61 of the air conditioner 60 as a mounted body by the mounting member 70 as a mounting member.

As shown in fig. 1 and 2, the drain pump 1 includes a casing 10, a cover 20, a rotary vane 30, and a motor 40. In the present embodiment, the casing 10, the cover 20, and the rotary blade 30 are made of synthetic resin.

The casing 10 integrally includes a main body 11, a suction pipe 16, and a discharge pipe 18. The body 11 has a bottom wall 12 of an inverted conical trapezoid shape, and a peripheral wall 13 connected to an outer peripheral edge of the bottom wall 12. The suction pipe 16 extends downward from the center of the bottom wall 12 and has a downward suction port 17. The discharge pipe 18 extends laterally (rightward in fig. 1 (b)) from the peripheral wall portion 13 and has a lateral discharge port 19. In the present embodiment, the discharge pipe 18 linearly extends in the lateral direction, but is not limited thereto. For example, the discharge port may be formed in a substantially L-shape or an arc shape facing upward, and may be provided on a side portion of the body 11. A discharge pipe inlet 15 serving as an inlet to a discharge pipe 18 is provided on an inner peripheral surface 14 of the peripheral wall portion 13 of the body portion 11.

The housing 10 has a space in which the rotary vane 30 is disposed inside thereof, and the space is enclosed (defined) together with the cover 20 to form the pump chamber 5.

The cover 20 has a lower cover 21 having a substantially cylindrical shape, and an upper cover 22 having a covering type and closing an upper end of the lower cover 21. The lower cover 21 is fitted at its lower end portion to the upper opening of the main body portion 11 of the housing 10, and is attached to the housing 10 by an elastic engagement mechanism 23. The upper cover 22 is attached to the upper end of the lower cover 21 via a locking portion 24.

A plurality of mounting portions 25 for mounting drain pump 1 to air conditioner 60 are integrally provided on upper surface 22a of upper cover 22. The mounting portion 25 includes a pillar portion 26 extending obliquely upward, and a flat plate portion 27 extending horizontally from the tip of the pillar portion 26. When drain pump 1 is viewed in the vertical direction, flat plate portion 27 protrudes outward from the projected shapes of lower cover 21 and upper cover 22, and the outermost end of flat plate portion is inscribed in imaginary circle P1 having diameter L1. A notch 28 is provided at the outer end of the flat plate portion 27.

The slit 28 has a shape in which the width of a portion entering the inside from the entrance is wider than the width of the entrance when viewed in the vertical direction. In the present embodiment, the width of the entrance of the slit 28 is smaller than the diameter of a post portion 71 of the mounting member 70 described later. The width of the portion of the slit 28 that enters the interior from the entrance is larger than the diameter of the column portion 71 of the attachment member 70 and smaller than the diameter of the base end portion 73. The notch 28 vertically penetrates the flat plate portion 27 of the mounting portion 25, and corresponds to a through hole provided in the cover 20.

The rotary vane 30 is rotatably accommodated in the pump chamber 5. The rotary vane 30 includes a shaft 31, a large-diameter vane 33, a small-diameter vane 34, an auxiliary vane 35, and an annular member 36. The rotary vane 30 includes a plurality of large-diameter vanes 33, small-diameter vanes 34, and auxiliary vanes 35 formed in a substantially flat plate shape, and four of them in the present embodiment. Further, the auxiliary blade 35 may be omitted.

The shaft portion 31 is formed in a cylindrical shape, and has an attachment hole 32 in which a drive shaft 41 of the motor 40 is fitted at an upper end portion. The large-diameter blades 33 extend radially from the outer peripheral surface of the shaft 31. The plurality of small-diameter blades 34 are connected to the radially inner portions of the lower ends of the large-diameter blades 33. The auxiliary blades 35 are disposed between the axially adjacent large-diameter blades 33 and extend in the radial direction. The annular member 36 has an inverted conical trapezoid shape, and an opening 37 is provided at the center. The annular member 36 connects the tapered portions of the lower ends of the large-diameter blades 33 and the auxiliary blades 35 to each other. The large-diameter vane 33 and the auxiliary vane 35 are disposed in the pump chamber 5 such that the outer end in the radial direction faces the inner circumferential surface 14 of the circumferential wall 13 of the housing 10. The small-diameter vane 34 is inserted into the suction pipe 16 through an opening 37 of the annular member 36.

The motor 40 is housed in the cover 20. In the cover 20, the shaft portion 31 of the rotary blade 30 is inserted through a through hole 29 provided in the center of the cover 20, and the drive shaft 41 of the motor 40 is fitted into the mounting hole 32 of the shaft portion 31.

The air conditioner 60 has a drain pan, not shown, that receives drain water condensed on the surface of the indoor heat exchanger, and the drain pump 1 is attached to a top plate 61 provided above the drain pan at an interval. As shown in fig. 3(a), the top plate 61 is provided with a plurality of through holes 62. In the present embodiment, three through holes 62 are provided.

The through hole 62 has a circular insertion portion 63 and a slit portion 64 continuous with the insertion portion 63. The diameter of the insertion portion 63 is larger than the diameter of the distal end portion 72 of the attachment member 70. The insertion portion 63 may have any shape as long as the distal end portion 72 of the attachment member 70 can be inserted therethrough. The width of the slit portion 64 is smaller than the diameter of the distal end portion 72 (i.e., the width of the distal end portion 72) and larger than the diameter of the pillar portion 71. In the present embodiment, the center of the insertion portion 63 of each through hole 62 is arranged on the imaginary circle Q1. The center line of the slit portion 64 of each through hole 62 is also arranged on the virtual circle Q1.

The mounting member 70 is formed in a columnar shape, and has a columnar column portion 71, a circular flange-shaped distal end portion 72 provided at an upper end (one end) of the column portion 71, and a circular flange-shaped proximal end portion 73 provided at a lower end (the other end) of the column portion 71. The distal end 72 is an upper end of the mounting member 70. The base end 73 is an end below the mounting member 70. The diameter of the column portion 71 is smaller than the width of the portion of the slit 28 that enters the inside from the entrance and the width of the slit portion 64 of the through hole 62 of the top plate 61. The tip portion 72 has a diameter larger than the width of the slit portion 64. The diameter of the base end portion 73 is larger than the width of the portion of the slit 28 that enters the inside from the entrance. The distal end portion 72 and the proximal end portion 73 may be wide portions that bulge radially outward from the column portion 71. In the present embodiment, there are three mounting members 70.

In the present embodiment, drain pump 1 is attached to top plate 61 by attachment member 70 so as to hang down (hang) by its own weight. Here, "hanging down by its own weight" means hanging down only by its own weight without receiving any other force. Therefore, for example, in a configuration in which drain pump 1 is suspended in a state of being connected to a drain pan or the like by a cable in order to limit excessive vibration, drain pump 1 is subjected to tensile force by the cable and is not included in "suspended by its own weight". Of course, such a configuration may be adopted that restricts the swing or the like of the drain pump 1 by a cable or the like.

The mounting member 70 is separate from the top plate 61 and the cover 20. Drain pump 1 is attached to top plate 61 so as to hang down by the upper end of attachment member 70 being locked to top plate 61 and the lower end being locked to cover 20.

Specifically, the distal end portion 72 of the attachment member 70 is inserted into the through hole 62 provided in the top plate 61, and has an annular downward surface 72a that hangs down from the upper edge portion 62a of the through hole 62. The base end 73 of the attachment member 70 is inserted through the cutout 28 of the flat plate portion 27 provided in the attachment portion 25 of the cover 20, and has an annular upward surface 73a that is hung from the lower edge 28a of the cutout 28 so that the flat plate portion 27 hangs down. The distal end portion 72 may have a flange shape other than a circular shape, the downward surface 72a may have a ring shape other than a circular ring shape, and the same applies to the proximal end portion 73.

The bending modulus of the mounting member 70 is smaller than the bending modulus of the top plate 61 and the cover 20. Preferably, the bending modulus of the mounting member 70 is smaller than the bending modulus of at least one of the top plate 61 and the cover 20. Thus, the vibration propagating from the cover 20 to the top plate 61 is effectively damped by the mounting member 70.

Next, a method of mounting drain pump 1 to top plate 61 of air conditioner 60 by mounting member 70 will be described.

First, the mounting member 70 is mounted on the flat plate portion 27 of the plurality of mounting portions 25 of the drain pump 1. Specifically, the column portion 71 of the attachment member 70 is pushed into the notch 28 from the entrance of the notch 28 provided in each flat plate portion 27. Thereby, the column portion 71 of the mounting member 70 is held in a state of being inserted through the slit 28.

Next, the distal end portion 72 of the attachment member 70 attached to each flat plate portion 27 is inserted into the insertion portion 63 of the through hole 62 provided in the top plate 61 of the air conditioner 60. Then, drain pump 1 is rotated in a counterclockwise direction when viewed from above, and column portion 71 of mounting member 70 is slid and moved into slit portion 64 of through-hole 62.

Thus, the downward surface 72a of the distal end portion 72 of the attachment member 70 is hung on the upper edge portion 62a of the through hole 62 (suspended state). The upper surface 73a of the base end 73 of the attachment member 70 is caught by the lower edge 28a of the notch 28, and the flat plate portion 27 is suspended. In this way, drain pump 1 is attached to top plate 61 of air conditioner 60 in a suspended state by attachment member 70. At this time, cover 20 (flat plate portion 27) of drain pump 1 is disposed opposite top plate 61 with gap D therebetween. The interval D is preferably 0.5mm to 100mm, and more preferably 1mm to 50 mm.

As described above, according to the present embodiment, the drain pump 1 is attached to the top plate 61 of the air conditioner 60 by the attachment member 70 so that the cover 20 is spaced apart from the top plate 61. Thus, since the cover 20 of the drain pump 1 does not contact the top plate 61, it is possible to prevent the vibration from being directly transmitted from the cover 20 to the top plate 61. Therefore, propagation of vibration of motor 40 to top plate 61 to which drain pump 1 is attached can be suppressed, and quietness during operation can be achieved.

Drain pump 1 is attached to top plate 61 by attachment member 70 so as to hang down by its own weight. Accordingly, the drain pump 1 has freedom of movement without being fixed, and the drain pump 1 is suspended from the ceiling plate 61 by its own weight. Therefore, since drain pump 1 is loosely connected to top plate 61, propagation of vibration of motor 40 to top plate 61 to which drain pump 1 is attached can be suppressed, and quietness during operation can be achieved. Further, since the drain pump 1 is suspended from the top plate 61 with freedom of movement, it is possible to maintain a posture with less vibration by autonomously balancing when the motor 40 rotates.

The mounting member 70 is separate from the cover 20. Drain pump 1 is attached to top plate 61 by locking top end portion 72 of attachment member 70 to top plate 61 and locking bottom end portion 73 of the bottom end to cover 20. The distal end portion 72 of the attachment member 70 is inserted through the through hole 62 provided in the top plate 61 and is hooked on the upper edge portion 62a of the through hole 62. The base end 73 of the attachment member 70 is inserted through the notch 28 provided in the cover 20 and is hooked on the lower edge 28a of the notch 28. Accordingly, drain pump 1 can be attached to top plate 61 with a relatively simple configuration.

The distal end portion 72 of the attachment member 70 is a wide portion bulging outward. The through hole 62 of the top plate 61 has: the mounting member 70 includes an insertion portion 63 having a shape through which a distal end portion 72 of the mounting member 70 can be inserted, and a slit portion 64 continuous with the insertion portion 63 and having a width smaller than that of the distal end portion 72. Accordingly, the drain pump 1 can be easily attached to the top plate 61 by inserting the distal end portion 72 of the attachment member 70 into the insertion portion 63 of the through hole 62 and then sliding the same to enter the slit portion 64.

(second embodiment)

Next, an installation structure of a drain pump according to a second embodiment of the present invention will be described with reference to fig. 4 and 5.

Fig. 4 is a diagram showing a mounting structure of a drain pump according to a second embodiment of the present invention. Fig. 4(a) is a plan view showing through the top plate. Fig. 4(b) and (c) are a front view and a bottom view. Fig. 5 is a view illustrating an installation structure of the drain pump of fig. 4. Fig. 5(a) is a plan view seen from above the top plate, and the drain pump is shown by a broken line. Fig. 5 b is an enlarged view of the vicinity of the through hole of the top plate (the elliptical portion of the one-dot chain line in fig. 5 a). Fig. 5(c) is an enlarged sectional view taken along line B-B of fig. 5 (B). In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The second embodiment is a structure in which the drain pump 1A is attached to the top panel 61 of the air conditioner 60 as an attached body by the attaching member 80. In the second embodiment, in addition to the configuration of the first embodiment, the drain pump 1A is used without the mounting portion 25, and the mounting member 80 is used in which the base end portion 83 is integrally mounted on the upper surface 22a of the upper cover 22.

Drain pump 1A shown in fig. 4 and 5 has the same configuration as drain pump 1 except that mounting portion 25 is omitted from drain pump 1 according to the first embodiment.

The mounting member 80 is formed in a columnar shape, and has a columnar column portion 81 and a circular flange-shaped distal end portion 82 provided at the upper end of the column portion 81. Further, the base end portion 83 of the mounting member 80 is provided integrally with the upper cover 22 of the drain pump 1A. The distal end 82 is an upper end of the mounting member 80. The base end portion 83 is an end portion on the lower side of the mounting member 80. The diameter of the column portion 81 is smaller than the width of the slit portion 64 of the through hole 62 of the top plate 61. The tip portion 82 has a diameter larger than the width of the slit portion 64. The distal end portion 82 may be a wide portion that bulges radially outward from the column portion 81. In the present embodiment, there are three mounting members 80.

The distal end 82 of the attachment member 80 is inserted into the through hole 62 provided in the top plate 61, and has an annular downward surface 82a that hangs down from the upper edge 62a of the through hole 62. The distal end 82 may have a flange shape other than a circular shape, and the downward surface 82a may have a ring shape other than a circular ring shape.

The bending modulus of the mounting member 80 is smaller than the bending modulus of the top plate 61 and the cover 20. Preferably, the bending modulus of the mounting member 80 is smaller than the bending modulus of at least one of the top plate 61 and the cover 20. Thus, the vibration propagating from the cover 20 to the top plate 61 can be effectively damped at the mounting member 80.

In the second embodiment, the center of the insertion portion 63 of each through hole 62 is arranged on the imaginary circle Q2. The center line of the slit portion 64 of each through hole 62 is also arranged on the virtual circle Q2. This imaginary circle Q2 is included in the projected shapes of the lower cover 21 and the upper cover 22 when viewed from the top-bottom direction. Further, the outermost end of the cover 20 of the drain pump 1A is inscribed in an imaginary circle P2 when viewed in the vertical direction, and the diameter L2 of the imaginary circle P2 is smaller than the diameter L1 of the imaginary circle P1 of the first embodiment.

The distal end portion 82 of the attachment member 80 is attached to the top plate 61 of the air conditioner 60 by the same attachment method as the distal end portion 72 of the attachment member 70 of the first embodiment. At this time, cover 20 of drain pump 1A (upper surface 22a of upper cover 22) is disposed opposite top plate 61 with a gap D therebetween. The interval D is preferably 0.5mm to 100mm, and more preferably 1mm to 50 mm.

The second embodiment can also achieve the same effects as the first embodiment. Further, since the mounting portion 25 is omitted, it can be configured more compactly.

(third embodiment)

Next, an installation structure of a drain pump according to a third embodiment of the present invention will be described with reference to fig. 6.

Fig. 6 is a diagram illustrating an installation structure of a drain pump according to a third embodiment of the present invention. Fig. 6(a) is a plan view seen from above the top plate, and the drain pump is shown by a broken line. Fig. 6 b is an enlarged view of the vicinity of the through hole of the top plate (the elliptical portion of the one-dot chain line in fig. 6 a). Fig. 6(c) is an enlarged sectional view taken along line a-a of fig. 6 (b). In the description of the second embodiment, "up and down" coincides with the direction from the front of the sheet of fig. 6(a) to the inside of the sheet, and coincides with the up and down direction of fig. 6 (c). In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The third embodiment is a structure in which the drain pump 1 is attached to the top plate 61 of the air conditioner 60 as an attached body by the attaching member 90. In the third embodiment, in addition to the configuration of the first embodiment, the circular through hole 65 is used in the top plate 61, and the mounting member 90 elastically deformable in the radial direction is used for the distal end portion 92 and the proximal end portion 93.

As shown in fig. 6(a), a top plate 61 of the air conditioner 60 is provided with a plurality of through holes 65. In the third embodiment, three through holes 65 are provided. The through hole 65 is formed in a circular shape. The diameter of the through hole 65 is smaller than the diameter of the distal end portion 92 of the mounting member 90.

The mounting member 90 is formed in a columnar shape, and has a columnar column portion 91, a circular flange-shaped distal end portion 92 provided at an upper end (one end) of the column portion 91, and a circular flange-shaped proximal end portion 93 provided at a lower end (the other end) of the column portion 91. The distal end 92 is an upper end of the mounting member 90. The base end portion 93 is an end portion on the lower side of the mounting member 90. The diameter of the column 91 is smaller than the width of the portion of the slit 28 that enters the inside from the entrance and the diameter of the through hole 65 of the top plate 61. The diameter of the tip portion 92 is larger than the diameter of the through hole 65. The diameter of the base end portion 93 is larger than the width of the portion of the slit 28 that enters the inside from the entrance. The distal end portion 92 and the proximal end portion 93 may be wide portions that bulge radially outward from the column portion 91. In the present embodiment, there are three mounting members 90.

The mounting member 90 includes: a slit 94 extending in the radial direction and having a depth from the tip end portion 92 to the column portion 91, and a slit 95 extending in the radial direction and having a depth from the base end portion 93 to the column portion 91. The

slits

94 and 95 are formed so that a plurality of elastic pieces elastically deformable in the radial direction are formed in the distal end portion 92 and the proximal end portion 93.

The tip end portion 92 of the attachment member 90 is inserted into the through hole 65 provided in the top plate 61, and has a downward surface 92a hanging down on the upper edge portion 65a of the through hole 65. The base end 93 of the mounting member 90 is inserted through the cutout 28 of the flat plate portion 27 provided in the mounting portion 25 of the cover 20, and has an upward surface 93a that hangs down the flat plate portion 27 on the lower edge 28a of the cutout 28.

The bending modulus of the mounting member 90 is smaller than the bending modulus of the top plate 61 and the cover 20. Preferably, the bending modulus of the mounting member 90 is smaller than the bending modulus of at least one of the top plate 61 and the cover 20. Accordingly, the vibration propagating from the cover 20 to the top plate 61 is effectively damped by the mounting member 90.

Next, a method of attaching the drain pump 1 to the top plate 61 of the air conditioner 60 by the attachment member 90 will be described.

First, the mounting member 90 is mounted on the flat plate portion 27 of the plurality of mounting portions 25 of the drain pump 1. Specifically, the column 91 of the attachment member 90 is pushed into the notch 28 from the entrance of the notch 28 provided in each flat plate portion 27. Alternatively, the plurality of elastic pieces at the base end portion 93 of the mounting member 90 are elastically deformed so as to be narrowed toward the center side, inserted into the slit 28 from above, and then restored. Instead of the notch 28, a circular through hole may be provided in the flat plate portion 27. Thereby, the column 91 of the mounting member 90 is held in a state inserted through the slit 28.

Next, distal end portions 92 of attachment members 90 attached to flat plate portions 27 are inserted into through holes 65 provided in top plate 61 of air conditioner 60. Specifically, the plurality of elastic pieces at the distal end portion 92 of the attachment member 90 are elastically deformed so as to be narrowed toward the center side, inserted into the through hole 65 from below, and then restored.

Thus, the downward surface 92a of the distal end portion 92 of the attachment member 90 hangs down on the upper edge portion 65a of the through hole 65. Further, an upward surface 93a of a base end portion 93 of the attachment member 90 is caught by an edge portion 28a below the notch 28, and the flat plate portion 27 is suspended. In this way, drain pump 1 is attached to top plate 61 of air conditioner 60 in a suspended state by attachment member 90. At this time, cover 20 (flat plate portion 27) of drain pump 1 is disposed opposite top plate 61 with gap D therebetween. The interval D is preferably 0.5mm to 100mm, and more preferably 1mm to 50 mm.

The third embodiment can also achieve the same effects as the first embodiment.

In particular, in the third embodiment, the distal end portion 92 of the attachment member 90 is a wide portion bulging outward, and slits are formed to constitute a plurality of elastic pieces. The distal end portion 92 is inserted into the through hole 65 of the top plate 61 in a state where the plurality of elastic pieces are elastically deformed toward the center side. The base end 93 of the mounting member 90 is a wide portion bulging outward, and has slits formed therein to constitute a plurality of elastic pieces. The base end portion 93 may be inserted into the notch 28 of the cover 20 in a state where the plurality of elastic pieces are elastically deformed toward the center side. This allows drain pump 1 to be easily attached to top plate 61.

In the second embodiment, instead of the distal end portion 82 of the mounting member 80 and the through hole 62 of the top plate 61, the same structure as that of the distal end portion 92 (where slits are formed to constitute a plurality of elastic pieces 94) of the mounting member 90 and the through hole 65 may be employed as in the third embodiment.

Further, in each of the above embodiments, the structure is provided with three mounting parts (mounting members), but at least one mounting part may be provided. In the structure having only one mounting member, a portion corresponding to the center of gravity of the drain pump is mounted to the top plate via the mounting member.

Further, in each of the above embodiments, the description has been given of the structure in which the drain pump 1 is attached to the top plate 61 so as to hang (hang), but other than this, for example, in the first embodiment, the distal end portion 72 of the attachment member 70 may be fixed to the top plate 61 by an adhesive or the like. The base end 73 of the attachment member 70 may be fixed to the cover 20 (flat plate portion 27) by an adhesive or the like. The diameter of the column portion 71 of the attachment member 70 may be the same as or slightly larger than the width of the slit portion 64. The diameter of the column portion 71 of the attachment member 70 may be the same as or slightly larger than the width of the portion of the slit 28 that enters the interior from the entrance. The same applies to the second and third embodiments.

The embodiments of the present invention have been described above, but the present invention is not limited to these embodiments. In the above-described embodiments, a person skilled in the art can appropriately add, delete, and design a modified technique to a component or appropriately combine features of the embodiments without departing from the spirit of the present invention, and the technique is included in the scope of the present invention.

Description of the symbols

(first embodiment)

1. 1a … drain pump, 5 … pump chamber, 10 … casing, 11 … body, 12 … bottom wall, 13 … peripheral wall, 14 … inner peripheral surface, 15 … discharge pipe inlet, 16 … suction pipe, 17 … suction port, 18 … discharge pipe, 19 … discharge port, 20 … cover, 21 … lower cover, 22 … upper cover, 22a … upper cover upper surface, 23 … elastic fitting mechanism, 24 … locking part, 25 … mounting part, 26 … pillar part, 27 … flat plate part, 28 … notch, 28a … notch edge part, 29 … through hole, 30 … rotary blade, 31 … shaft part, 32 … mounting hole, 33 … large and small diameter blade, 34 … blade, 35 … auxiliary blade, 36 … annular part, 37 … opening, 40 … motor, 41 … drive shaft, 60 …, 61 … top plate, 62 …, 3663 a slot part, … through hole part, … mounting hole part, …, 71 … column part, 72 … top part, 72a … down surface, 73 … base part, 73a … up surface

(second embodiment)

80 … mounting member, 81 … pillar portion, 82 … distal end portion, 82a … downward surface, 83 base end portion 83 …

(third embodiment)

65 … through hole, edge of 65a … through hole, 90 … mounting component, 91 … column part, 92 … front end part, 92a … downward surface, 93 … base end part, 93a … upward surface

Claims

1. A drain pump mounting structure provided with a drain pump and at least one mounting member for mounting the drain pump to a top plate as a mounted body, the drain pump being disposed below the top plate, characterized in that:

the drain pump includes a rotary blade, a housing accommodating the rotary blade, a cover mounted on an upper portion of the housing, and a motor accommodated in the cover and rotating the rotary blade,

the mounting member is provided with a mounting part,

the mounting member has a tip end portion formed with a downward surface on an upper end side,

the tip end portion of the mounting member is inserted into a through hole provided in the top plate, and the downward surface is caught by an upper edge portion of the through hole,

the drain pump is attached to the top plate by the attachment member so that the cover is spaced apart from the top plate.

2. The drain pump mounting structure according to claim 1, wherein the drain pump is mounted to the top plate in a hanging manner by the mounting member.

3. The drain pump mounting structure according to claim 2, wherein the drain pump is attached to the top plate by the attachment member so as to hang down by its own weight.

4. The drain pump mounting structure according to any one of claims 1 to 3,

the distal end portion of the mounting member has a wide portion bulging outward,

the through hole of the top plate has: an insertion portion having a shape through which the distal end portion of the mounting member can be inserted; and a slit part connected to the insertion part and having a width smaller than that of the wide part.

5. The drain pump mounting structure according to claim 4,

the front end of the mounting member has a wide portion bulging outward, and slits are formed to constitute a plurality of elastic pieces,

the plurality of elastic pieces are inserted into the through hole of the top plate in a state of being elastically deformed toward the center of the distal end portion.

6. The drain pump mounting structure according to any one of claims 1 to 5,

the mounting member is separate from the cover,

the drain pump is attached to the top plate by locking a lower end of the attachment member to the cover.

7. The drain pump mounting structure according to claim 6, wherein the lower end portion of the mounting member is inserted into a through hole provided in the cover and is caught by a lower edge portion of the through hole.

8. The drain pump mounting structure according to claim 7,

the lower end of the mounting member has a wide part bulging outward, and slits are formed to constitute a plurality of elastic pieces,

the plurality of elastic pieces are inserted into the through-holes of the cover in a state of being elastically deformed toward the center of the lower end portion.

9. A drain pump mounting structure according to any one of claims 1 to 5, wherein the mounting member is provided integrally with the cover.

10. The drain pump mounting structure according to any one of claims 1 to 9, wherein a bending elastic modulus of the mounting member is smaller than a bending elastic modulus of at least one of the top plate and the cover.