KR20120057008A - Hot water circulating pump - Google Patents

Hot water circulating pump Download PDF

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Publication number
KR20120057008A
KR20120057008A KR1020100118536A KR20100118536A KR20120057008A KR 20120057008 A KR20120057008 A KR 20120057008A KR 1020100118536 A KR1020100118536 A KR 1020100118536A KR 20100118536 A KR20100118536 A KR 20100118536A KR 20120057008 A KR20120057008 A KR 20120057008A
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KR
South Korea
Prior art keywords
impeller
hot water
housing
rotor
circulation pump
Prior art date
Application number
KR1020100118536A
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Korean (ko)
Other versions
KR101204344B1 (en
Inventor
공영삼
Original Assignee
(주) 아이에스-텍
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Priority to KR20100118536A priority Critical patent/KR101204344B1/en
Publication of KR20120057008A publication Critical patent/KR20120057008A/en
Application granted granted Critical
Publication of KR101204344B1 publication Critical patent/KR101204344B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: A hot water circulating pump is provided to reduce manufacturing costs by decreasing a height of a hot water circulating pump because a motor rotating an impeller is formed inside the pump to be integrated. CONSTITUTION: A hot water circulating pump comprises an upper housing(110), a lower housing(120), an inner housing(130), an impeller(140), a rotor, and a stator(160). A receiving space is formed inside the lower housing. An impeller receiving groove is formed in the middle part of the inner housing. A lower shaft supporting unit is formed in the middle part of a bottom unit of the impeller receiving groove. The impeller housed inside the upper housing and impeller receiving groove is installed to be rotated so that a fluid flowing path is formed between the inner surface of the inner housing and impeller. The rotor is installed inside the outer circumference of the impeller. The stator is installed in the receiving space between the inner and lower housings corresponding to the rotor.

Description

Hot water circulation pump {HOT WATER CIRCULATING PUMP}

The present invention relates to a hot water circulation pump, and more particularly, the structure is simple, simple, and can minimize manufacturing costs by minimizing the height of the upper and lower, and ensures a smooth fluid flow during the rotation of the impeller to improve the rotational position of the impeller It relates to a hot water circulation pump that can be kept constant to block the generation of noise and vibration.

In general, a heating device such as a hot water mat is provided with a small hot water boiler for generating and supplying hot water, and the small hot water boiler is provided with a hot water circulation pump which performs a function of circulating the heated water from the heating means onto the pipe. It is.

For example, the hot water circulation pump is provided with a motor 12 driven by an external power source and an impeller 14 coupled to the rotating shaft 13 of the motor 12 to rotate as shown in FIG. It is configured to supply hot water by using the rotational force generated in 14).

However, the above-described hot water circulation pump vibrates when the impeller 14 and the motor 12 are interposed between the impeller 14 and the motor 12 so that the length of the rotating shaft 13 supporting the impeller 14 is too long. While this occurs, noise is generated by the vibration. In addition, since the hot water circulation pump supplies hot water to the hot water mat, vibration and noise generated from the impeller interfere with the water surface.

In order to solve the above problems, Korean Patent Laid-Open Publication No. 10-2007-0053183 discloses that the impeller body of the impeller floats in the rotating groove of the space compartment by the interaction of the magnet in the driving rotor and the magnet in the impeller. A hot water circulation pump is disclosed, which is rotated without contacting a rotating groove so that noise can be quietly rotated without generating noise.

As shown in FIG. 2, the hot water circulation pump 1 includes a pump portion configured to perform a pumping function on an upper portion of the motor 2, and an upper portion of the motor 2. The lower housing 7 of the pump portion is installed in the pump housing, and the drive rotating body 4 provided with the driving magnet housing 5 and the magnet 6 is installed in the motor shaft 3 in the lower housing 7. The space compartment 13, the impeller 17, and the impeller housing 9 are sequentially provided inside the drive rotary body 4.

In addition, the magnet 20 corresponding to the magnet 6 of the driving rotor 4 is embedded in the impeller 17, and the motor shaft 3 does not directly rotate the impeller 17, but the driving rotor ( When 4) is rotated by the motor shaft, the impeller body of the impeller 17 is rotated by the rotation groove 14 of the space compartment 13 by the interaction of the magnet 6 therein and the magnet 20 in the impeller 17. It rotates without contacting the rotating groove in a state of being injured in.

Since the impeller body 18 of the impeller 17 is rotated in the state of being raised in the rotary groove 14 of the space compartment 13, the above-mentioned Patent Publication No. 10-2007-0053183 does not generate noise. It was able to solve some of the problems of the prior art, which was rotated so as to obstruct sleep on the hot water mat, but a separate motor (2) perpendicular to the lower side of the pump portion including the impeller (17) to perform the hot water pumping action. As the structure is combined with the pump part and the motor part to be manufactured separately and assembled, there is a disadvantage that the manufacturing cost is too high due to the increase in the material cost and the assembly cost.

In addition, since the pump part and the motor part are separately constituted, the pump part and the motor part are placed up and down, and the height and volume are large, resulting in an increase in the overall weight and volume of the small hot water boiler. Could not simply be configured.

In particular, the above-mentioned conventional hot water circulation pump is a hot water flowing into the narrow passage between the space compartment 13 and the impeller 17 at high speed rotation of the impeller 17 is not easily circulated, so that the impeller ( 17) Since the upper surface side of the impeller comes into contact with the corresponding inner surface of the impeller housing 9 and friction, it causes vibration and noise, which disturbs the sound sleep, and causes wear or damage caused by friction, thereby deteriorating durability. There was a problem letting.

The present invention has been proposed in view of the above, the structure is simple, simple, to minimize the height of the lower and lower the manufacturing cost, and to provide a hot water circulation pump to reduce the weight and volume of the small hot water boiler. There is a purpose.

Another object of the present invention is to provide a hot water circulation pump that can prevent the generation of noise and vibration by ensuring a smooth fluid flow during rotation of the impeller to maintain a constant rotational position of the impeller.

In order to achieve the above object, the hot water circulation pump according to the present invention, the hot water circulation pump, the inlet and outlet of the fluid is formed and the upper housing formed in the central shaft upper support; A lower housing disposed and installed to correspond to the lower side of the upper housing and having a receiving space therein; An inner housing having edge portions interposed between the upper and lower housings, an impeller receiving groove formed at a center thereof, and a lower shaft support formed at a center of a bottom of the impeller receiving groove; An impeller received and rotatably installed on the inside of the upper housing and the impeller receiving groove so that a flow path for the flow of the fluid is formed between the inner surface of the inner housing; A rotor installed inside an outer circumference of the impeller; And a stator installed in an accommodation space between the inner housing and the lower housing corresponding to the rotor.

The impeller, the inlet groove is recessed in the upper portion of the cylindrical body through which the shaft insertion hole penetrates up and down, the rotor receiving groove in which the rotor is accommodated in the bottom is formed, the plurality of wing pieces around the inlet groove Formed impeller body; An impeller rotating shaft inserted into the shaft insertion hole and rotatably installed on the upper and lower shaft supporting portions; An impeller upper cover coupled to the wing piece and having a through hole communicating with the inlet and the inlet groove; And an impeller lower cover coupled to the bottom of the impeller body such that the rotor accommodating groove side is sealed.

On the other hand, the stator is composed of a core to which the stator coil is wound, an upper core support member coupled to an upper portion to support an upper side of the core, and a lower core support member coupled to a lower portion to support a lower side of the core, And a positioning member disposed between the bottom of the lower core support member and the bottom surface of the lower housing such that the stator is located in a receiving space between the outer circumferential surface of the inner housing corresponding to the rotor and the inner circumferential surface of the lower housing. It may include.

The inner housing is a flange portion having a fastening hole for fastening with the upper housing, an accommodating portion formed in a "u" shape in the flange portion to form the impeller receiving groove, protrudes downward in the center of the accommodating portion and A support having a fastening hole for fastening with the lower housing may be formed.

In addition, a plurality of discharge holes may be formed through the impeller so as to communicate with the flow path so that the fluid in the flow path is exhausted upward.

The hot water circulating pump of the present invention can be reduced in manufacturing cost because the motor for rotating the impeller is not combined separately but is integrally formed inside the pump, resulting in a concise and simple structure and reducing the overall height of the hot water circulating pump. Installation and handling can be improved. In addition, the compact hot water boiler in which the hot water circulation pump is installed may be manufactured in a slim form, and the weight and volume may be reduced.

In addition, the hot water circulation pump of the present invention smoothly exhausts the water introduced into the flow path (a) through the discharge hole (b), so that hot water does not occur in the flow path (a) even when the impeller is rotated at high speed. Is smoothly circulated and the impeller is prevented from rising so that wear and damage of related parts due to contact and friction can be prevented and durability can be improved, and vibration or noise can be blocked to provide a good sleeping environment for the user. There are advantages to it.

1 and 2 are views for explaining a conventional hot water circulation pump,
Figure 3 is a perspective view showing the external structure of the hot water circulation pump according to an embodiment of the present invention,
Figure 4 is a cutaway perspective view showing a hot water circulation pump according to an embodiment of the present invention,
Figure 5 is an exploded perspective view showing a hot water circulation pump according to an embodiment of the present invention,
Figure 6 is a schematic cross-sectional view for explaining the operation of the hot water circulation pump according to an embodiment of the present invention,
7 is a view showing a state of mounting the hot water circulation pump according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing the external structure of the hot water circulation pump according to an embodiment of the present invention, Figure 4 is a cutaway perspective view showing a hot water circulation pump according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention Separated perspective view showing the hot water circulation pump according.

3 to 5, the hot water circulation pump 100 according to an embodiment of the present invention includes an upper housing 110, a lower housing 120, an inner housing 130, an impeller 140, and a rotor ( 150, and the stator 160, and the pump portion and the motor portion to perform the pumping action is integrally configured in one body.

The upper housing 110 is formed with the inlet 112 and the outlet 113 of the fluid and the upper shaft support portion 114 is formed inside the central portion, the central protrusion 111 protruding in a circular cap shape is formed in the center, A flange portion 115 for fastening with the inner housing 130 is formed at the periphery thereof. In addition, the inlet 112 is protruded in the form of a pipe in the center 111 of the central protrusion 111, the outlet 113 is pipe in the direction orthogonal to the inlet 112 to communicate with the internal space of the impeller 140 side It protrudes in shape.

The lower housing 120 is arranged and installed to correspond to the lower side of the upper housing 110, the lower housing 120 is formed in a closed cylindrical shape to form a receiving space therein, the center of the inner housing 130 to be described later A fixing hole 121 is formed in which the support 133 is seated and the fastening member is inserted. In addition, the lower housing 120 includes a plurality of heat dissipation holes 122 for heat dissipation, an inlet hole 123 for retracting power cables, and the like.

The inner housing 130 is installed between the upper and lower housings 110 and 120, and an impeller accommodation groove 132a is formed at the center of the impeller accommodation groove 132a to accommodate the impeller 140. The lower shaft support part 134 is formed in the center of a bottom part.

 In addition, the inner housing 130 is characterized in that the receiving space for the installation of the stator 160 is formed in the peripheral outer portion in the state inserted into the lower housing 120, the upper housing in the upper edge portion Of the receiving portion 132 and the receiving portion 132 which are formed to be connected in a "u" shape to the flange portion 131 to form the flange portion 131, the impeller receiving groove 132a is formed for the fastening hole with The support 133 is formed to protrude downward in the center and have a fastening hole for fastening with the lower housing 120. In addition, a fastening hole for a fastening member (not shown) fastened through the fixing hole 120 side of the lower housing 120 is formed below the support part 133, and the shaft insertion groove is formed on the upper part of the support part 133. The formed lower shaft support part 134 is formed.

The impeller 140 is rotatably inserted into the interior of the upper housing 110 and the impeller receiving groove 132a to perform a substantial pumping action. The appearance of the impeller is accommodated in the inner housing 130 in the installed state. It is formed in a corresponding shape so that the flow path (a) for the flow of the fluid is formed between the groove (132a).

To this end, the impeller 140 has an impeller body 141, an impeller rotating shaft 142 installed on the impeller body 141, an impeller upper cover 143 and an impeller lower cover installed on the upper and lower portions of the impeller body 141. 144.

As shown in FIGS. 4 and 5, the impeller body 141 penetrates the shaft insertion hole 141a up and down through the body formed in a cylindrical shape, and the inflow groove 141b is recessed in the upper part of the body, The rotor accommodating groove 141c into which the electron 150 is accommodated is recessed, and a plurality of wing pieces 141d are formed around the upper portion of the body where the inflow groove 141b is formed. The impeller body 141, in which the rotor accommodating groove 141c is formed, is formed to protrude to the outside, and a fastening hole for fastening the impeller upper cover 143 is formed on the upper surface of the wing piece 141d. It is.

On the other hand, the impeller 140 is characterized in that a plurality of discharge holes (b) formed to penetrate up and down. The discharge hole (b) is formed to communicate with the flow path (a) formed between the outer surface of the impeller body 141 and the inner surface of the inner housing 130, the flow path (a) at high speed rotation of the impeller 140 By allowing the fluid staying inside to circulate smoothly, it is possible to prevent the impeller 140 from rising due to the phenomenon of cavitation.

The discharge hole (b) is composed of a plurality of components at the point having the same radius around the shaft insertion hole (141a) of the impeller body 141 so that oscillation (eccentric rotation) does not occur during the rotation of the impeller 140 It is designed to prevent wear or damage.

And, the discharge hole (b) is formed so that the impeller 140 smoothly rotates even if the capacity of the hot water circulation pump, the weight of the impeller 140, the shape or size of the impeller body 141 is changed, Of course, the arrangement, the diameter and the like can be adjusted.

Impeller rotating shaft 142 is provided on the outer peripheral surface is composed of a shaft support member 142a inserted into the shaft insertion hole (140a).

The impeller upper cover 143 is a coupling boss 143a inserted into the fastening hole formed in the wing piece 141d on the bottom of the body having a disc shape, and the inlet 112 and the inlet groove 141b of the impeller body 141. The through hole 143b is formed in communication with.

The impeller lower cover 144 is coupled to the bottom of the impeller body 141 so that the rotor accommodating groove 141c side is sealed, and the support part 133 of the inner housing 130 in the center of the disc-shaped body. A through hole 144a for installation is formed, and a plurality of fastening bosses 144b for fastening with the impeller body 141 protrude from the upper surface.

Rotor 150 is a configuration that is installed inside the outer periphery of the impeller 140, in the present embodiment is composed of a magnet of a circular ring shape that is repeatedly magnetized N pole and S pole rotor of the impeller body 141 It is inserted into and installed in the receiving groove 141c.

The stator 160 is installed at a position corresponding to the rotor 150 for electromagnetic induction with the rotor 150. In this embodiment, the outer circumferential surface of the inner housing 130 is configured to integrally configure the motor part in the pump portion. Installed in the outer receiving space is characterized in that the volume and size of the hot water circulation pump is minimized.

The stator 160 supports a core 161 to which a stator coil (not shown) is wound, an upper core support member 162 coupled to an upper part to support an upper side of the core 161, and a lower side of the core 161. It is composed of a lower core support member 163 coupled to the lower portion. In addition, the core 161 is formed in a structure in which a plurality of core teeth 161a protrude into the body having an overall circular ring shape, and the upper and lower core support members 162 and 163 are formed on the upper surface of the ring-shaped disk. And a plurality of guide protrusions 162a and 163a protrude to the lower surface.

Meanwhile, in the hot water circulation pump 100 according to the present embodiment, the stator 160 may be positioned in an accommodation space between the outer circumferential surface of the inner housing 130 corresponding to the rotor 150 and the inner circumferential surface of the lower housing 120. Positioning member 170 is installed between the bottom of the lower core support member 163 and the bottom surface of the lower housing 120 to enable it.

The positioning member 170 has a support plate 171 formed of a ring-shaped disc so that the bottom side of the lower core support member 163 is seated, and between the bottom of the support plate 171 and the inner surface of the lower housing 120. It is comprised by the several support piece 172 attached to and formed in the round bar shape.

On the other hand, the configuration of the above-mentioned hot water circulation pump can be easily understood by those skilled in the art, namely, a fastening member such as a fastening screw, a brush (for supplying an excitation current of the generator), an illustration and a detailed description of the power supply, etc. Are abbreviated or omitted.

Hereinafter will be described the operation of the hot water circulation pump according to an embodiment of the present invention.

Figure 6 is a schematic cross-sectional view for explaining the operation of the hot water circulation pump according to an embodiment of the present invention, Figure 7 is a view showing the mounted state of the hot water circulation pump according to an embodiment of the present invention.

3 to 7, when the hot water circulation pump 100 configured as described above is installed in a small hot water boiler as shown in FIG. It is operated to heat the water, and the hot water circulation pump 100 is operated to perform a pumping action to circulate the heated hot water to a heated mat (not shown).

Referring to the operation of the hot water circulation pump 100 in more detail, when the power is applied, the impeller 140 installed with the rotor 150 is rotated by the electromagnetic induction action of the stator 130 and the rotor 150. . When the impeller 140 is rotated, as shown in FIG. 7, since the suction port 112 is connected to the bottom of the low casting 11, water is introduced by the suction force, and then, the wing piece of the impeller body 141 by the pumping action. It is discharged through the passage between 141d and the impeller upper cover 143 and flows into the heating means 2 along the discharge line 15 via the discharge port 113. The introduced water is heated in accordance with the heating action of the heating means 2 and then transferred to the place of use such as a heating mat through the connection line 16.

And, during the pumping action of the impeller 140, a part of the hot water discharged through the passage between the wing piece (141d) and the impeller upper cover 143 is the outer surface of the impeller body 141 and the impeller of the inner housing 130 Since the impeller 140 flows into the flow path a formed between the accommodating grooves 132a and is discharged, the impeller 140 does not come into contact with the inner surface of the impeller accommodating groove 132a. In addition, the hot water introduced into the flow path (a) flows up and down the impeller body 141, and smoothly exhausted upwards while flowing into the discharge hole (b) formed, so that the flow path (a) even at high speed rotation of the impeller 140 Since the hot water is circulated smoothly, and the rising phenomenon of the impeller 140 is prevented, the vibration or noise generated by contacting the inner surface of the upper housing 110 or the adjacent parts is increased as the impeller is raised. You can block.

What has been described above is only one embodiment for implementing the hot water circulation pump according to the present invention, the present invention is not limited to the above-described embodiment, the subject matter of the present invention as claimed in the following claims Any person with ordinary skill in the art to which the present invention pertains without departing from the scope of the present invention will have the technical idea of the present invention to the extent that various modifications can be made.

100: hot water circulation pump 110: upper housing
112: inlet 113: outlet
120: lower housing 130: inner housing
131: flange portion 132: accommodation portion
132a: impeller receiving groove 133: support part
140: impeller 141: impeller body
142: impeller rotating shaft 143: impeller upper cover
144: impeller lower cover 150: rotor
160: stator 161: core
162: upper core support member 163: lower core support member
170: positioning member a: flow path
b: discharge hole

Claims (5)

In the hot water circulation pump,
An upper housing having an inlet and an outlet of the fluid and having an upper shaft support formed inside the central portion;
A lower housing disposed and installed to correspond to the lower side of the upper housing and having a receiving space therein;
An inner housing having edge portions interposed between the upper and lower housings, an impeller receiving groove formed at a center thereof, and a lower shaft support formed at a center of a bottom of the impeller receiving groove;
An impeller received and rotatably installed on the inside of the upper housing and the impeller receiving groove so that a flow path for the flow of the fluid is formed between the inner surface of the inner housing;
A rotor installed inside an outer circumference of the impeller; And
And a stator installed in a receiving space between the inner housing and the lower housing corresponding to the rotor.
The method of claim 1,
The impeller,
An impeller body in which an inlet groove is recessed in an upper portion of a cylindrical body having a shaft insertion hole penetrated up and down, and a rotor accommodating groove in which the rotor is accommodated in a bottom thereof is formed and a plurality of wing pieces are formed around the inlet groove;
An impeller rotating shaft inserted into the shaft insertion hole and rotatably installed on the upper and lower shaft supporting portions;
An impeller upper cover coupled to the wing piece and having a through hole communicating with the inlet and the inlet groove; And
Hot water circulation pump comprising an impeller lower cover coupled to the bottom of the impeller body so that the rotor receiving groove side is sealed.
The method of claim 1,
The stator is composed of a core to which the stator coil is wound, an upper core support member coupled to an upper part to support an upper side of the core, and a lower core support member coupled to a lower part to support a lower side of the core,
And a positioning member installed between the bottom of the lower core support member and the bottom surface of the lower housing such that the stator is located in a receiving space between the outer circumferential surface of the inner housing corresponding to the rotor and the inner circumferential surface of the lower housing. Hot water circulation pump, characterized in that.
The method of claim 1,
The inner housing is a flange portion having a fastening hole for fastening with the upper housing, an accommodating portion formed in a "u" shape in the flange portion to form the impeller receiving groove, protrudes downward in the center of the accommodating portion and Hot water circulation pump, characterized in that the support having a fastening hole for fastening with the lower housing is formed.
5. The method according to any one of claims 1 to 4,
Hot water circulation pump, characterized in that a plurality of discharge holes penetrated up and down in the impeller so as to communicate with the flow path to exhaust the fluid in the flow path upward.

KR20100118536A 2010-11-26 2010-11-26 Hot water circulating pump KR101204344B1 (en)

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KR20100118536A KR101204344B1 (en) 2010-11-26 2010-11-26 Hot water circulating pump

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KR101204344B1 KR101204344B1 (en) 2012-11-27

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Publication number Priority date Publication date Assignee Title
WO2018008839A1 (en) * 2016-07-05 2018-01-11 New Motech Co., Ltd. Pump for circulating water
WO2018052184A1 (en) * 2016-09-13 2018-03-22 New Motech Co., Ltd. Pump for circulating hot water
WO2018084428A1 (en) * 2016-11-03 2018-05-11 New Motech Co., Ltd. Water pump
WO2018084429A1 (en) * 2016-11-03 2018-05-11 New Motech Co., Ltd. Pump for circulating water to prevent noise during transition state
US10859090B2 (en) 2016-11-03 2020-12-08 New Motech Co., Ltd. Water pump
US10995758B2 (en) 2016-11-03 2021-05-04 New Motech Co., Ltd. Pump for circulating water to prevent noise during transition state
WO2019112156A1 (en) * 2017-12-06 2019-06-13 New Motech Co., Ltd. Pump for circulating water
KR20190066681A (en) * 2017-12-06 2019-06-14 뉴모텍(주) Pump for Circulating Water
KR102048068B1 (en) * 2018-07-04 2019-11-22 나경인터내셔날 주식회사 hot water supply pump of hot water mat
KR20210101949A (en) * 2020-02-11 2021-08-19 엘지전자 주식회사 Impeller and motor having the impeller

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