CN112204263A

CN112204263A - Pump case reaches magnetic drive pump including it

Info

Publication number: CN112204263A
Application number: CN201980003686.0A
Authority: CN
Inventors: 李相璇
Original assignee: Fluorine Technology
Current assignee: Fluorine Technology
Priority date: 2019-03-06
Filing date: 2019-11-08
Publication date: 2021-01-08
Also published as: US20210396246A1; WO2020179985A1

Abstract

A pump casing according to an embodiment of the present invention forms an internal space including an inflow space into which a fluid flows, a flow path through which the fluid flows from the inflow space and into which the fluid that has flowed in is discharged to the outside, and an arrangement space in which an impeller that rotates about a predetermined central axis so as to guide the flow of the fluid is arranged, the pump casing including: a suction housing for forming the inflow space into which a fluid flows; and a volute for forming the flow path for flowing the fluid from the inflow space into and discharging the flowed-in fluid to the outside by the impeller, wherein the volute forms the arrangement space for arranging the impeller, and the pump housing further includes a fluid guide device that is arranged on the inner space and guides movement of the fluid moving in a direction from the inflow space to the arrangement space.

Description

Pump case reaches magnetic drive pump including it

Technical Field

The present invention relates to a pump case and a magnetic pump including the same, and more particularly, to a pump case including a suction case forming an inflow space into which a fluid flows and a scroll forming a flow path through which the fluid flows from the inflow space by an impeller and is discharged to the outside, and a magnetic pump including the same.

Background

A magnetic pump has been known which includes a front housing (front housing) for forming a pump chamber and a rear housing (rear housing) for forming a cylindrical space continuous with the pump chamber.

A magnet pot rotatably supported by a support shaft is disposed in the cylindrical space of the rear housing, and an impeller accommodated inside the pump chamber is joined to the magnet pot.

A rotation driving part magnetically engaged with the magnet pot is disposed at an outer side of the rear case, and the magnet pot is rotated by a driving force of the rotation driving part.

When the magnet pot rotates, the impeller coupled thereto rotates, and the transfer fluid is introduced into the pump chamber from the cylindrical suction port formed in the front surface of the front housing, and the transfer fluid is discharged from the discharge port formed in the side surface of the front housing.

The support shaft extends to the suction port of the front housing via the pump chamber.

The front end of the support shaft is covered by a shaft support part connected to the suction port, and the inner wall of the suction port and the shaft support part are connected by a plurality of support legs (supporting legs).

A magnetic pump is disclosed in Korean laid-open patent No. 10-2016-0122707 (published 10/24/2016).

Among them, the front housing may be divided into a portion for forming the suction port 4 into which the fluid flows and a portion for forming the pump chamber 3 as a space in which the impeller 13 is disposed.

Depending on the use of the magnetic pump, the size of the space defined by the suction port 4 and the size of the space defined by the pump chamber 3 need to be different.

However, since the portion forming the suction port 4 and the portion forming the pump chamber 3 are integrally formed, there is a problem in that a larger number of front housings need to be manufactured according to the use.

Disclosure of Invention

Technical problem

The present invention has been made to solve the above problems, and an object of the present invention is to provide a pump housing and a magnetic pump including the pump housing, in which: the front housing is independently formed as a suction housing for forming an inflow space into which a fluid flows and a scroll for forming a flow path through which the fluid flows from the inflow space by the impeller and is discharged to the outside, so that various types of suction housings and scroll cases can be combined and joined to each other for use according to the use of the magnetic pump.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and those skilled in the art can clearly understand the problems not mentioned in the present invention from the present specification and the accompanying drawings.

Technical scheme

A pump casing according to an embodiment of the present invention is a pump casing for forming an internal space including an inflow space into which a fluid flows, a flow path through which the fluid flows from the inflow space and into which the fluid that has flowed in is discharged to the outside, and an arrangement space in which an impeller that rotates about a predetermined central axis so as to guide the flow of the fluid is arranged, the pump casing including: a suction housing for forming the inflow space into which a fluid flows; and a volute for forming the flow path for flowing the fluid from the inflow space into and discharging the flowed-in fluid to the outside by the impeller, wherein the volute forms the arrangement space for arranging the impeller, and the pump housing further includes a fluid guide device that is arranged on the inner space and guides movement of the fluid moving in a direction from the inflow space to the arrangement space.

Advantageous effects

A pump casing according to an embodiment of the present invention has the following advantages: the front housing is independently formed as a suction housing for forming an inflow space into which a fluid flows and a scroll for forming a flow path through which the fluid flows from the inflow space by the impeller and is discharged to the outside, so that various types of suction housings and scroll cases can be combined and joined to each other for use according to the use of the magnetic pump.

The effects of the present invention are not limited to the above-described effects, and those skilled in the art can clearly understand the effects of the present invention which are not mentioned in the present specification and drawings.

Drawings

Fig. 1 is a schematic cross-sectional view of a pump casing according to an embodiment of the present invention.

Fig. 2 is a schematic exploded sectional view of a pump casing according to an embodiment of the present invention.

Fig. 3 is a schematic enlarged cross-sectional view of a portion of the pump housing according to an embodiment of the present invention, in which the space maintaining portion is omitted.

Fig. 4 is a schematic enlarged cross-sectional view of a portion including a space maintaining portion in a pump housing according to an embodiment of the present invention.

Fig. 5 is a schematic perspective view of a support portion of a pump casing according to an embodiment of the present invention.

Fig. 6 is a partial sectional view of a magnetic pump for explaining a fluid guide device according to another embodiment of the present invention.

Fig. 7 is a partially exploded sectional view of a magnetic pump for explaining a fluid guide device according to another embodiment of the present invention.

Fig. 8 is a front and rear perspective view of a fluid guide device according to another embodiment of the present invention.

Fig. 9 is an elevation view from the rear of a fluid guide device according to another embodiment of the present invention.

Fig. 10 is a cross-sectional view of a fluid directing device according to another embodiment of the present invention.

Fig. 11 is a partially enlarged sectional view for explaining a contact recess portion of a fluid guide device according to another embodiment of the present invention.

Fig. 12 is a partially enlarged sectional view for explaining a first insertion groove and a second insertion groove of a fluid guide device according to another embodiment of the present invention.

Detailed Description

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the idea of the present invention is not limited to the proposed embodiments, and a person skilled in the art understanding the idea of the present invention can easily propose other inventions which are out of step or other embodiments included in the scope of the idea of the present invention by adding, changing, deleting, or the like of other components within the scope of the same idea, but they are also included in the scope of the idea of the present invention.

The same reference numerals are used to describe functionally identical components within the same idea presented in the drawings of the embodiments.

In order to express the technical idea of the present invention more clearly, the accompanying drawings may be simplified or omitted, or portions that are less relevant to the technical idea of the present invention or that can be easily derived by those skilled in the art may be omitted.

First, a pump casing 10 according to an embodiment of the present invention will be described with reference to fig. 1 to 5.

As shown in fig. 1 to 5, a pump housing 10 according to an embodiment of the present invention may be a component of a pump that realizes fluid flow.

For example, the pump housing 10 may be configured to form a flow path through which fluid flows.

As an example, the pump housing 10 may include: a suction case 100 for forming an inflow space S1 into which a fluid flows; the scroll 200 forms a flow path for allowing the fluid to flow from the inflow space S1 by the impeller and discharging the inflow fluid to the outside.

For example, the suction housing 100 and the scroll casing 200 may be made of a metal material.

For example, the suction casing 100 may be configured to form the inflow space S1 and allow the fluid to flow into the inflow space S1 from the outside by the impeller.

As an example, the suction housing 100 may be coupled to and receive fluid from a conduit and/or pipe (not shown).

For example, the scroll casing 200 may be configured to allow the impeller to flow the fluid from the inflow space S1.

As an example, the scroll case 200 may form a flow path for transferring the fluid received from the inflow space S1 to the outside.

As an example, the volute 200 may be coupled to and deliver fluid to a conduit and/or pipe.

Here, as an example, the scroll casing 200 may form an arrangement space S2 for arranging the impeller.

That is, the impeller is disposed on the disposition space S2 and can embody a rotational force, and the fluid can be moved by the rotational force.

That is, fluid can flow from the outside to the inflow space S1 formed by the suction housing 100 through the impeller, and can be discharged from the inflow space S1 to the outside through the arrangement space S2 along a flow path formed by the scroll case 200.

Here, the suction casing 100 may be detachably attached to the scroll casing 200 by a predetermined attachment/detachment member T, for example.

That is, the suction housing 100 may be connected to the scroll case 200 by the mounting and dismounting member T, and may also be separated from the scroll case 200 by the mounting and dismounting member T.

The pump case 10 can require the inflow space S1 and/or the arrangement space S2 in various sizes and/or shapes according to the use.

Accordingly, the suction housing 100 and the scroll case 200 are not integrally formed but are constructed to be detachable from each other, so that the pump case 10 has an advantage of being able to be formed by holding the suction housing 100 and the scroll case 200 in various sizes and/or shapes in combination with each other.

For example, the attachment/detachment member T may be a bolt having a thread, but is not limited thereto, and may be variously modified from the standpoint of those skilled in the art as long as it is configured to selectively connect or disconnect the suction housing 100 and the scroll casing 200.

However, for convenience of description, the following description will be made assuming that the attachment/detachment member T is a bolt formed with a thread.

Here, the suction housing 100 may include a suction body 110 for forming the inflow space S1 and a first coupling portion 120 for coupling the detachable member T, for example.

For example, a plurality of the first joining portions 120 may be formed at predetermined positions of the suction body 110, and the detachable member T may be joined to the first joining portions 120.

For example, the first engagement portion 120 may be formed with a screw thread corresponding to a screw thread of the attaching and detaching member T.

Here, as an example, the scroll casing 200 may include a scroll casing body portion 210 for forming the disposition space S2 and a second coupling portion 220 for coupling the mounting member T.

For example, a plurality of the second junctions 220 may be formed at positions on the volute body portion 210 corresponding to the first junctions 120.

For example, a screw corresponding to the screw of the attaching and detaching member T may be formed in the second engaging portion 220.

As a result, when the attachment/detachment member T is joined to the first joint portion 120 and the second joint portion 220 at the same time, the connection between the suction casing 100 and the scroll casing 200 can be achieved.

Here, as an example, the suction housing 100 may include a first facing surface 130 facing the scroll case 200 when connected to the scroll case 200 by the mounting and dismounting member T.

Further, the scroll case 200 may include a second opposite surface 230 opposite to the first opposite surface 130 in a state of being coupled to the suction housing 100 by the mounting and dismounting member T.

As an example, the first opposite surface 130 may refer to a surface opposite to the scroll case 200, and the second opposite surface 230 may refer to a surface opposite to the suction housing 100.

That is, the first opposite face 130 and the second opposite face 230 may refer to faces facing each other by the connection of the suction housing 100 and the scroll casing 200.

Therefore, in the case where the suction housing 100 and the scroll casing 200 are not firmly connected, there is a possibility that the fluid on the inflow space S1 and/or the arrangement space S2 may leak to the outside through between the first opposite face 130 and the second opposite face 230.

For example, the first opposing surface 130 and the second opposing surface 230 may be formed radially inward of the first joining portion 120 and the second joining portion 220 with respect to an imaginary central axis of the inflow space S1 and/or the arrangement space S2.

Here, as an example, the pump case 10 may further include a space maintaining part 300 disposed between the first opposing surface 130 and the second opposing surface 230, thereby preventing fluid from leaking between the first opposing surface 130 and the second opposing surface 230.

As an example, the space maintaining part 300 is disposed between the first facing surface 130 and the second facing surface 230, so that in a case where the suction housing 100 is coupled to the scroll casing 200 through the mount-and-demount member T, there is a possibility that the space maintaining part 300 may be pressurized by the first facing surface 130 and the second facing surface 230.

Accordingly, the interval maintaining part 300 can prevent the fluid from leaking between the first facing surface 130 and the second facing surface 230 by minimizing the interval distance between the first facing surface 130 and the second facing surface 230, i.e., by sealing between the first facing surface 130 and the second facing surface 230.

To explain this in more detail, as shown in fig. 3, in the absence of the interval maintaining part 300 between the first opposing face 130 and the second opposing face 230, there is a risk that the fluid on the inflow space S1 and/or the arrangement space S2 leaks to the outside through between the first opposing face 130 and the second opposing face 230.

In order to prevent this risk, as shown in fig. 4, the interval maintaining part 300 is disposed between the first opposite face 130 and the second opposite face 230 to enable fluid leakage to be minimized.

For example, the space maintaining part 300 may be a fluororesin elastic material such as PFA, PTFE, FEP, ETFE, EFEP, and/or CPT.

As a result, the sealing function of the space maintaining portion 300 can be further maximized.

Here, for example, in a case where the suction housing 100 and the scroll casing 200 are connected by the attachment/detachment member T, the space maintaining portion 300 may form a space S3 between the first joint portion 120 and the second joint portion 220, so that the first joint portion 120 and the second joint portion 220 do not contact each other.

To explain this in more detail, when the first joining portion 120 and the second joining portion 220 are completely joined to the attachment/detachment member T, that is, when the suction housing 100 and the scroll casing 200 are firmly connected, the first joining portion 120 and the second joining portion 220 may not be in contact with each other by the space maintaining portion 300.

That is, the first joining part 120 and the second joining part 220 may be spaced apart from each other by the space maintaining part 300, and as a result, the spaced space S3 may be formed between the first joining part 120 and the second joining part 220.

In general, the possibility that the position where the fluid leaks from the inflow space S1 and/or the disposition space S2 is between the first engaging part 120 and the second engaging part 220 is very high, and from this point of view, even if the suction housing 100 and the scroll casing 200 are firmly connected by the loading and unloading member T, the interval maintaining part 300 easily recognizes the fluid leakage by providing the interval space S3 so that the first engaging part 120 and the second engaging part 220 do not contact each other, so that the operator can easily recognize the fluid leakage by providing a sensing device (not shown) capable of sensing the fluid leakage on the interval space S3.

Furthermore, the operator can quickly cope with the following problems: in case of sensing the fluid leakage, it can be easily visually recognized whether the fluid leaks to the space S3.

Therefore, even if the space maintaining part 300 is deformed to the elastic limit by the pressurization of the first opposing surface 130 and the second opposing surface 230, the operator can quickly confirm the leakage of the fluid between the first opposing surface 130 and the second opposing surface 230 by forming the expected space S3.

Here, the space maintaining part 300 may be exposed to the space S3, for example.

For example, one end of the space maintaining unit 300 may be exposed to the space S3, and an operator may easily recognize whether the space maintaining unit 300 is damaged, whether the space maintaining unit 300 is disposed at a desired position, and/or whether fluid leaks through the space maintaining unit 300 through the space S3.

Here, the interval maintaining part 300 may include, for example, a first interval maintaining part 310 connected to the suction housing 100 and a second interval maintaining part 320 connected to the scroll case 200.

That is, the interval maintaining part 300 may be formed by a combination of the first interval maintaining part 310 and the second interval maintaining part 320 instead of being formed of a single elastic body.

For example, the first space maintaining part 310 may be coupled to the suction housing 100 to cover at least a portion of the first facing surface 130 of the suction housing 100.

As an example, the second interval maintaining part 320 may be connected to the scroll casing 200 in such a manner as to cover at least a portion of the second opposite face 230 of the scroll casing 200.

If, in the case where the interval maintaining part 300 is formed of a single elastic body and connected to either one of the suction housing 100 and the scroll casing 200, the suction housing 100 and the scroll casing are connected to each other between the first opposite surface 130 and the second opposite surface 230 by the attachment and detachment member T, there are problems as follows: the interval maintaining part 300 cannot be disposed at an expected position between the first opposite face 130 and the second opposite face 320 and is changed in position due to unexpected pressurization from the suction housing 100 or the scroll case 200.

Accordingly, the space maintaining part 300 is constructed by the first space maintaining part 310 previously coupled to the suction housing 100 and the second space maintaining part 320 previously coupled to the scroll casing 200, and the first space maintaining part 310 and the second space maintaining part 320 are not changed in position even when the suction housing 100 and the scroll casing are coupled to each other by the attachment and detachment member T, and can be disposed at a desired position between the first facing surface 130 and the second facing surface 230.

Here, the pump casing 10 further includes a support portion 400, as an example, the support portion 400 being disposed in the disposition space S2 and supporting a front end of a support shaft (not shown) for supporting the impeller.

For example, the support shaft may be a member that supports the impeller.

For example, the impeller may be supported by the support shaft and rotated with reference to the support shaft.

Here, for example, the tip of the support shaft may penetrate the impeller and be supported by the support part 400.

For example, the supporting part 400 may include: a support main body portion 410 for forming an accommodating space S4 for accommodating a front end of the support shaft; a vortex flow reducing part 420 formed to protrude from the support main body part 410 and reducing a vortex flow of the fluid moving from the inflow space S1 to the arrangement space S2; and a support extension 430 spaced apart from the eddy current reducing part 420 and forming a space for fluid to flow, the support extension 430 being supported on the suction housing 100 and/or the scroll casing 200 in such a manner that the support main body part 410 is disposed at a predetermined position on the disposition space S2.

For example, the support shaft is disposed in the receiving space S4 and can transmit the load of the impeller to the support body 410.

For example, the support body 410 may receive a load of the impeller and may transmit the load to the support extension 430, and the support extension 430 may transmit the load of the impeller to the suction housing 100 or the scroll casing 200.

For example, the support part 400 may be disposed at the disposition space S2, and may be separated from the disposition space S2 when the suction housing 100 is separated from the scroll case 200.

Here, for example, the first opposing surface 130 may axially press the support portion 400 so that the support portion 400 does not swing on the arrangement space S2.

To explain this in more detail, the suction casing 100 can be moved toward the scroll casing 200 by the engagement of the removable member T, and as a result, the first opposing surface 130 can be moved toward the scroll casing 200 by the engagement of the removable member T.

Accordingly, the first opposing face 130 can press the support extension 430 of the support part 400 disposed on the disposition space S2 in the axial direction.

Here, for example, the first space maintaining part 310 may pressurize the supporting part 400 in an axial direction so that the supporting part 400 does not swing on the arrangement space S.

To explain this in more detail, the first space maintaining portion 310 may be disposed between the first opposing surface 130 and the support portion 400, and the suction housing 100 may be moved toward the scroll case 200 by the engagement of the attachment and detachment member T, and as a result, the first space maintaining portion 310 may be moved toward the scroll case 200 by the pressurization of the first opposing surface 130.

At this time, the first interval maintaining part 310 can pressurize the support extension 430 of the support part 400 toward the scroll casing 200 side.

As a result, the support portion 400 can be pressed and fixed at a predetermined position on the arrangement space S2 by the support shaft and the first space maintaining portion 310.

At this time, the support extension 430 of the support part 400 pressed by the first space maintaining part 310 can be fixed at a predetermined position on the arrangement space S2 without being broken, in view of the fact that the first space maintaining part 310 is made of an elastic material.

As an example, in fig. 1, the axial direction may refer to a lateral direction.

Here, for example, the second space maintaining portion 320 may pressurize the supporting portion 400 in a direction perpendicular to the axial direction such that the supporting portion 400 does not swing on the arrangement space S2.

To explain this in more detail, the second interval-maintaining portion 320 may be disposed between the scroll body portion 210 and the support portion 400, the support portion 400 may be interference-fitted to the second interval-maintaining portion 320, and the second interval-maintaining portion 320 may pressurize the support portion 400 in the orthogonal direction by expressing an elastic force.

Further, when the impeller rotates about the axial direction as a rotation axis, the support part 400 may receive a centrifugal force from the support shaft in a radial direction outside with respect to the rotation axis, and the support extension part 430 of the support part 400 may press the second space maintaining part 320 in the orthogonal direction by the centrifugal force.

That is, the second interval maintaining part 320 can be relatively pressurized to the support extending part 430 of the support part 400 by the centrifugal force of the support part 400.

As a result, a centrifugal force acts between the second space maintaining portion 320 and the scroll body portion 210, and the sealing effect can be further maximized.

For example, the first interval maintaining part 310 may include: a first space contact portion 311 in contact with the second space maintaining portion 320; a first support contact part 313 contacting the support part 400; and a first extension part 315 extending from the first support contact part 313 to the inflow space S1 without contacting the support part 400.

For example, the first space contact portion 311 may be in contact with the second space maintaining portion 320 to seal between the second space maintaining portion 320 and the first space maintaining portion 310.

For example, the first support contact part 313 may seal the space between the first space maintaining part 310 and the suction main body part 110 by pressurizing the support extension part 430 of the support part 400.

Further, the first extension part 315 extends from the first supporting contact part 313, and thus it is possible to prevent an end part of the first supporting contact part 313 from being damaged, which may occur when the first supporting contact part 313 pressurizes the supporting part 400.

Further, the first extension 315 may be guided in such a manner that the first spacing contact part 311 and the supporting contact part can be disposed at a predetermined position of the suction housing 100.

In addition, as an example, the second interval maintaining part 320 may include: a second space contact portion 321 in contact with the first space maintaining portion 310; a second support contact part 323 contacting the support part 400; and a second extension part 325 extending from the second support contact part 323 to the arrangement space S2 without contacting the support part 400.

For example, the second gap contacting portion 321 may be in contact with the first gap maintaining portion 310 to seal a gap between the first gap maintaining portion 310 and the second gap maintaining portion 320.

For example, the second supporting contact part 323 can seal the space between the second gap maintaining part 320 and the suction body part 110 by pressurizing the supporting extension part 430 of the supporting part 400.

Further, the second extension portion 325 extends from the second supporting/contacting portion 323, and thus it is possible to prevent an end portion of the second supporting/contacting portion 323 from being damaged, which may occur when the second supporting/contacting portion 323 pressurizes the supporting portion 400.

Further, the second extension 325 may be guided in such a manner that the second spacing contact 321 and the supporting contact can be disposed at a predetermined position of the scroll casing 200.

Next, a fluid guide device 3000 according to another embodiment of the present invention will be described with reference to fig. 6 to 12.

The fluid guide 3000 may have a structure corresponding to the support 400 described above.

In describing the technical idea of the fluid guide device 3000, a portion overlapping with the content of one component of the pump housing 10 described above with reference to fig. 1 to 5 will be omitted or briefly described.

As shown in fig. 6 and 7, the fluid guide device 3000 according to an embodiment of the present invention may be a component of a pump a10 that realizes fluid flow.

For example, the pump case may form a flow path through which the fluid flows, and may form a space for arranging components constituting the pump a 10.

As an example, the pump housing may form an internal space including: an inflow space S1 into which the fluid flows; a flow path for allowing the fluid to flow from the inflow space and discharging the fluid to the outside; and an arrangement space S2 for arranging the impeller 4000 that rotates with reference to a predetermined central axis in a manner of guiding the flow of the fluid.

That is, the inner space may refer to an inner space of the pump housing formed by the pump housing in a manner distinguished from the outside, and may be a concept of the flow path including the inflow space S1 into which fluid flows from the outside, the arrangement space S2 for arranging the impeller 4000, and a space which is a space through which fluid moves from the inflow space S1 to the outside via the arrangement space S2 by rotation of the impeller 4000.

As an example, the predetermined central axis may refer to a central axis of the support axis X, which will be described below.

As an example, the pump case may include a suction case 1000 for forming an inflow space S1 into which fluid flows, and a scroll 2000 for forming a flow path for allowing the fluid to flow from the inflow space S by the impeller 4000 and discharging the inflow fluid to the outside.

As an example, the suction housing 1000 and the scroll 2000 may be a metal material.

For example, the suction housing 1000 may have the following structure: the inflow space S1 is formed, and fluid flows into the inflow space S1 from the outside by the impeller 4000.

For example, the suction housing 1000 may be coupled to and receive fluid from a conduit and/or pipe (not shown).

As an example, the scroll 2000 may have a structure in which the fluid flows from the inflow space S1 through the impeller 4000.

As an example, the scroll 2000 may form a flow path for transferring the fluid received from the inflow space S1 to the outside.

As an example, the volute 2000 can be coupled to and deliver fluid to a conduit and/or pipe.

Here, as an example, the scroll 2000 may form an arrangement space S2 for arranging the impeller 4000.

That is, the impeller 4000 is disposed on the disposition space S2 to express a rotational force, and the fluid can be moved by the rotational force.

That is, fluid can flow from the outside to the inflow space S1 formed by the suction housing 1000 through the impeller 4000, and can be discharged from the inflow space S1 to the outside through the arrangement space S2 along a flow path formed by the scroll 2000.

Here, the suction casing 1000 may be detachably attached to the scroll casing 2000 by a predetermined attaching and detaching member T, for example.

That is, the suction housing 1000 may be connected to the scroll casing 2000 by the mounting and dismounting member T, and may be separated from the scroll casing 2000 by the mounting and dismounting member T.

Since the suction housing 1000 and the scroll casing 2000 can correspond to the suction housing 100 and the scroll casing 200 described with reference to fig. 1 to 5, detailed description thereof is omitted.

In addition, although it has been described above that the pump body can be formed by joining the suction housing 1000 and the scroll casing 2000 to each other by the attachment/detachment member T, the pump body is not limited to this, and the suction housing 1000 and the scroll casing 2000 may be integrally formed.

Here, as an example, as shown in fig. 6 to 12, the fluid guide 3000 may be disposed in the internal space and configured to guide the movement of the fluid moving from the inflow space S1 to the arrangement space S2.

For example, the fluid guide 3000 may guide the fluid so as to reduce a vortex of the fluid moving from the inflow space S1 to the arrangement space S2.

For example, the fluid guide 3000 may include: a guide body portion 3100 for forming a moving space S5 in which the fluid moves from the inflow space S1 to the arrangement space S2; and a guide extension portion 3200 extending from the guide body portion 3100 in an inward direction to reduce a vortex of the moving fluid.

For example, the guide body 3100 may have a hollow cylindrical shape, and a hollow region may be referred to as the movement space S5.

For example, the guide extension 3200 may be formed to extend from the guide body portion 3100 in the inward direction, i.e., in a direction toward the predetermined central axis.

For example, the guide body 3100 may have a plurality of guide extensions 3200 formed thereon at intervals.

At this time, the moving space S5 may be formed between the plurality of guide extensions 3200.

Here, as an example, the fluid guide device 3000 may further include a guide support part 3400 extending from the guide extension part 3200 and forming an accommodation space S4 for accommodating a front end of the support shaft X supporting the impeller 4000.

For example, the guide support 3400 may support a front side end, which is a front end of the support shaft X.

For example, a rear end of the support shaft X, i.e., a rear side end (not shown) may directly or indirectly support the pump housing.

For example, the front end of the support shaft X may be inserted into the receiving space S4 and supported by the guide support 3400.

Here, as an example, the fluid guide device 3000 may further include a guide contact portion 3300, and the guide contact portion 3300 may contact the impeller 4000 rotated by an external force on the arrangement space S2.

The impeller 4000 can be rotated in a clockwise and/or counterclockwise direction on the support shaft X by an external force, and a fluid can be moved from the inflow space S1 to a direction of the arrangement space S2, i.e., a rear side, by the rotation of the impeller 4000.

At this time, a force that attempts to move in a direction opposite to the fluid movement direction, i.e., in a direction from the arrangement space S2 to the inflow space S1, i.e., in a forward direction, due to a reaction of the fluid movement, can act on the impeller 4000.

At this time, the guide contact portion 3300 comes into contact with the rotating impeller 4000 while attempting to move forward, thereby reducing a frictional force with the impeller 4000, and maximizing the rotation efficiency of the impeller 4000.

Therefore, as an example, the material of the guide contact part 3300 may be a material having a small friction coefficient.

Here, the guide body 3100 is configured to be able to contact the suction casing 1000 at a front side, contact the scroll casing 2000 in a radial direction with reference to the predetermined center axis, and be constrained to the support shaft X at a rear side by the guide support portion 4000, so that the guide body 3100 is not moved in position by the suction casing 1000, the scroll casing 2000, and the support shaft X.

Here, the guide body 3100 is formed of a material having a relatively larger friction coefficient than the guide contact portion 3300, and in a state where the guide body 3100 is constrained to the suction housing 1000, the scroll 2000, and the support shaft X, even if an external force is applied, the positional movement on the front side, the rear side, and/or the radial direction can be restricted.

Here, the guide body portion 3100 is formed of a material having a relatively smaller elastic coefficient than the guide contact portion 3300, and an elastic change amount may be relatively large, and as a result, may be pressed and disposed on the suction housing 1000 and/or the scroll 2000.

As a result, since the guide contact portion 3300 has a smaller friction coefficient than the guide body portion 3100 and the guide contact portion 3300 is formed of a material having a large elastic coefficient, the rotation efficiency (due to the friction coefficient) of the impeller 4000 can be relatively improved as compared with the guide body portion 3100, and the elastic deformation due to the external force applied by the impeller 4000 is small, so that the contact with the impeller 4000 can be continued at a predetermined position (due to the elastic coefficient).

On the contrary, since the friction coefficient of the guide body 3100 is larger than that of the guide contact portion 3300 and the guide body 3100 is formed of a material having a small elastic coefficient, in a state of being relatively restricted to the suction housing 1000, the scroll case 2000, and the support shaft X compared to the guide contact portion 3300, even if an external force is applied, the position movement (due to the friction coefficient) on the front side, the rear side, and/or the radial direction can be restricted, and the elastic deformation due to the external force is large, so that the external force buffering function (due to the elastic coefficient) can be provided.

For example, the material of the guide contact 3300 may be carbon-containing carbon steel and/or ceramic such as sintered silicon carbide (SSiC), silicon carbide (SiSiC), or silicon carbide (SiC).

For example, the material of the guide body 3100 may be a fluororesin such as PFA, PTFE, FEP, ETFE, EFEP, or CPT.

For example, the material of the guide extension portion 3200 and the guide support portion 3400 may be the same as the material of the guide body portion 3100.

For example, the fluid guide device 3000 may be manufactured by the following method: the guide body 3100, the guide extension 3200, and the guide support 3400 are formed in a predetermined shape by fixing the guide contact portion 3300 having a predetermined shape to an injection mold (not shown) and injecting a fluororesin into the injection mold.

The function of the fluid guide 3000 will be described in more detail below.

For example, the guide body 3100 may surround at least a portion of the guide contact portion 3300.

As a result, the guide contact portion 3300 is restrained by the guide body portion 3100 so as not to be displaced, and the external force transmitted from the impeller 4000 can be transmitted to the guide body portion 3100.

In addition, as an example, the guide contact portion 3300 may include a contact body portion 3310, and the contact body portion 3310 may include a contact surface F contacting the impeller 4000, and the contact surface F may be disposed to protrude in a direction of the impeller 4000 than the guide body portion 3100.

For example, at least a part of the guide contact portion 3300 may be formed to protrude more rearward than the guide body portion 3100, and as a result, the contact surface F may be formed to protrude more rearward than the guide body portion 3100.

Therefore, the impeller 4000 is not in contact with the guide body 3100, but only in contact with the contact surface F.

For example, the contact surface F may be a surface facing the impeller 4000, which is a surface facing rearward from the guide contact portion 3300.

Here, as an example, the guide contact part 3300 may further include a contact protrusion part 3330 formed to protrude from the contact body part 3310, and the guide body part 3100 may surround the contact protrusion part 3330.

For example, the contact protrusion 3330 may be formed to radially protrude from the contact body 3310 with respect to the predetermined central axis.

That is, the contact protrusion 3330 may be formed to protrude outward in the radial direction from the outer surface of the contact body 3310 in the radial direction.

As a result, the contact main body portion 3310 can be positionally fixed to the guide main body portion 3100 by the contact protrusion 3330 being restrained to the guide main body portion 3100.

That is, the contact main body portion 3310 is restrained by the contact protrusion 3330 to the guide main body portion 3100 so that the movement thereof to the front side and/or the rear side with respect to the guide main body portion 3100 can be restricted.

In addition, for example, the guide extension 3200 may surround at least a portion of the contact main body portion 3310.

To describe this in more detail, the guide body portion 3100 may surround the outer side and the front side in the radiation direction of the contact body portion 3310, and the guide extension portion 3200 may surround the inner side in the radiation direction of the contact body portion 3310.

As a result, the contact body portion 3310 can be fixed to a predetermined position while being surrounded at least partially by the guide body portion 3100 and the guide extension portion 3200.

In addition, the contact body portion 3310 may include, as an example, a contact recess portion C recessed from the contact surface F to form a recess space.

For example, the contact recess portion C may be formed to be recessed from the contact surface F to the front side.

For example, the contact recess portion C may be formed in a radial direction on the contact surface F, and a plurality of the contact recess portions C may be formed on the contact surface F.

The contact recess C is recessed forward from the contact surface F and does not contact the impeller 4000.

As a result, the area of the contact surface F with the impeller 4000 can be reduced, and the rotation efficiency of the impeller 4000 can be increased.

Further, since the fluid flows into the recessed space, heat generated by contact between the impeller 4000 and the contact surface F can be released, and a lubricating function can be achieved.

Here, as an example, the maximum recess distance L1 from the contact surface F to the contact recess C may be smaller than the projection distance L2 from the guide body portion 3100 to the contact surface F.

To describe this in more detail, as shown in fig. 6, the contact surface F may be disposed to protrude further to the rear side than the guide body 3100, and the contact recessed portion C may be disposed to protrude further to the rear side than the guide body 3100.

As a result, the maximum recessed distance L1 from the contact surface F to the contact recessed portion C along the front side may be smaller than the protruding distance L2 from the guide body portion 3100 to the contact surface F along the rear side.

At this time, the fluid flowing into the recessed space can move radially outward through the recessed space and also move toward the surface of the guide body 3100 facing the impeller 4000.

That is, the fluid present in the concave space can move to the opposite surface side of the guide body 3100 facing the impeller 4000 having a relatively large space, and as a result, the eddy flow and stagnation of the fluid in the concave space can be reduced and the heat dissipation function can be maximized.

As an example, as shown in fig. 9 and 12, the guide body 3100 may be formed with a first insertion groove B1, and the first insertion groove B1 may be inserted with a fixing member (not shown) for fixing between the pump housing and the guide body 3100 such that the guide body 3100 is not rotated on the pump housing with respect to the predetermined central axis.

For example, the fixing member may be formed to protrude from an inner surface of a predetermined position of the pump housing so as to be inserted into the first insertion groove B1.

For example, the fixing member may be formed to protrude from an inner surface of a predetermined position of the scroll 2000 so as to be inserted into the first insertion groove B1.

In this case, a groove may be formed in the pump housing so that a part of the fixing member can be inserted.

At this time, a part of the fixing member is inserted into the groove of the pump case, and the other part is inserted into the first insertion groove B1, so that the guide body portion 3100 can be fixed so that the guide body portion 3100 does not rotate on the pump case with the predetermined central axis as a reference.

Further, as an example, a second insertion groove B2 into which the fixing member inserted into the first insertion groove B1 is inserted may be formed in the contact body portion 3310 such that the contact body portion 3310 does not rotate on the guide body portion 3100 about the predetermined central axis.

That is, the fixing member may be inserted into the first insertion groove B1 formed on the guide body portion 3100 and, at the same time, into the second insertion groove B2 formed on the contact body portion 3310.

As a result, the contact body 3310 is not rotatable about the predetermined center axis on the pump housing.

For example, the first insertion groove B1 and the second insertion groove B2 may be formed at the same curvature with respect to an imaginary center point.

For example, each of the first insertion groove B1 and the second insertion groove B2 may be formed to penetrate a portion of the guide body portion 3100 and a portion of the contact body portion 3310 in the imaginary central axis direction, and a plurality of the first insertion grooves B1 may be formed to be spaced apart from each other and a plurality of the second insertion grooves B2 may be formed to be spaced apart from each other.

A magnetic pump a10 according to still another embodiment of the present invention may include the fluid guide 3000, the pump housing, an outer magnet 6000 rotated by a motor, an inner magnet 5000 rotated by the outer magnet 6000, and the impeller 4000 rotated by the inner magnet 5000.

The outer magnet 6000 may be rotated based on the predetermined central axis by rotation of a motor, the inner magnet 5000 may be rotated on the support shaft X by rotation of the outer magnet 6000, and the impeller 4000 may be rotated in association with the inner magnet 5000.

In addition, as is apparent from korean laid-open patent No. 10-2016 0122707 (published 2016, 10/24), etc., which has been described above, the operation of the impeller 4000 that rotates on the inner space of the pump housing via the outer magnet 6000 and the inner magnet 5000 is easily realized by those skilled in the art, and from this point of view, fig. 6 is schematically illustrated in a box shape, and a detailed description thereof is omitted.

The fluid guide 3000 is attachable to and detachable from the pump housing, and is disposed on the pump housing to guide fluid.

It is to be understood that the fluid guide 3000 described with reference to fig. 6 to 12 can be applied as a component of the pump housing 10 instead of the support portion 400 described with reference to fig. 1 to 5.

That is, the technical idea of the pump case 10 explained with reference to fig. 1 to 5 may be implemented to apply the fluid guide 3000 instead of the support 400, as is apparent from the standpoint of those skilled in the art.

While the structure and features of the present invention have been described above with reference to the embodiments according to the present invention, the present invention is not limited thereto, and various changes and modifications within the scope of the idea of the present invention will be apparent to those skilled in the art to which the present invention pertains, and it is therefore clear that such changes and modifications are within the scope of the appended claims.

Claims

1. A pump casing forming an inner space including an inflow space into which a fluid flows, a flow path through which the fluid flows from the inflow space and discharges the inflow fluid to the outside, and an arrangement space for arranging an impeller that rotates with reference to a predetermined central axis in a manner of guiding the flow of the fluid,

the pump housing includes:

a suction housing for forming the inflow space into which a fluid flows; and

a scroll casing for forming the flow path for flowing the fluid from the inflow space by the impeller and discharging the fluid flowing in to the outside,

wherein the volute forms the arrangement space for arranging the impeller,

the pump casing further includes a fluid guide that is disposed on the inner space and guides movement of the fluid moving in a direction from the inflow space to the arrangement space.

2. The pump casing of claim 1,

the fluid guide device includes:

a guide body portion for forming a movement space in which the fluid moves from the inflow space to the arrangement space;

a guide extending portion extending from the guide main body portion in an inward direction and reducing a vortex of the moving fluid; and

a guide contact part that contacts the impeller rotated by an external force on the arrangement space,

wherein the guide contact portion has a coefficient of friction smaller than that of the guide main body portion, and the guide contact portion has a coefficient of elasticity larger than that of the guide main body portion.

3. The pump casing according to claim 2,

the guide body portion surrounds at least a portion of the guide contact portion,

the guide contact portion includes a contact main body portion including a contact surface that contacts the impeller,

the contact surface is arranged to protrude further in the direction of the impeller than the guide body portion.

4. The pump casing according to claim 3,

the guide contact portion further includes a contact protrusion portion formed to protrude radially from the contact main body portion with reference to the predetermined central axis,

the guide body portion surrounds the contact protrusion.

5. The pump casing according to claim 3,

the fluid guide device further includes a guide support portion extending from the guide extension portion and forming an accommodation space for accommodating a front end of a support shaft supporting the impeller,

the guide extension surrounds at least a portion of the contact body portion.

6. The pump casing according to claim 3,

the contact main body portion includes a contact recess portion recessed from the contact surface and forming a recessed space.

7. The pump casing of claim 6,

a maximum recess distance from the contact surface to the contact recess portion is smaller than a projection distance from the guide main body portion to the contact surface.

8. The pump casing according to claim 3,

the guide body portion is formed with a first insertion groove into which a fixing member for fixing between the pump housing and the guide body portion is inserted so that the guide body portion does not rotate on the pump housing with reference to the predetermined center axis,

the contact body portion is formed with a second insertion groove into which the fixing member inserted into the first insertion groove is inserted so that the contact body portion does not rotate on the guide body portion with reference to the predetermined central axis.

9. The pump casing according to claim 1, wherein,

the suction casing is attachable to and detachable from the scroll casing by a predetermined attachment and detachment member,

the suction housing includes a suction main body portion for forming the inflow space and a first engaging portion for engaging the attachment/detachment member,

the volute comprises a volute main body part for forming the arrangement space and a second joint part for jointing the loading and unloading component,

the suction housing having a first opposing face opposing the volute with the attachment member attached to the volute,

the volute, when connected to the suction housing by the handling member, has a second opposite face opposite the first opposite face.

10. The pump casing according to claim 9, wherein,

further comprising a space maintaining portion disposed between the first opposing face and the second opposing face, thereby preventing fluid from leaking from between the first opposing face and the second opposing face,

the space maintaining part is made of elastic material.

11. The pump casing of claim 10,

in a case where the suction housing and the scroll casing are connected by the attachment and detachment member, the space maintaining portion forms a space between the first engagement portion and the second engagement portion in such a manner that the first engagement portion and the second engagement portion do not contact.

12. The pump casing of claim 11,

the interval maintaining part includes:

a first interval maintaining part connected to the suction housing; and

a second interval maintaining part connected to the scroll case,

the first interval maintaining part pressurizes the fluid guide in an axial direction so that the fluid guide does not rock on the inner space,

the second space maintaining portion pressurizes the fluid guide device in an orthogonal direction perpendicular to the axial direction so that the fluid guide device does not rock on the internal space.

13. The pump casing of claim 12,

the first space maintaining part includes a first space contacting part contacting the second space maintaining part, a first support contacting part contacting the support part, and a first extending part extending from the first support contacting part to the inflow space and not contacting the support part,

the second space maintaining part includes a second space contacting part contacting the first space maintaining part, a second supporting contacting part contacting the supporting part, and a second extending part extending from the second supporting contacting part to the arrangement space and not contacting the supporting part.

14. The pump casing of claim 9,

the first opposing face axially pressurizes the fluid guide such that the fluid guide does not rock on the interior space.

15. A magnetic drive pump comprising:

the pump casing according to any one of claims 1 to 9;

an outer magnet rotated by the motor;

an inner magnet rotated by the outer magnet; and

an impeller rotated by the inner magnet.