KR101826600B1 - Pump for Circulating Water - Google Patents

Pump for Circulating Water Download PDF

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Publication number
KR101826600B1
KR101826600B1 KR1020160084752A KR20160084752A KR101826600B1 KR 101826600 B1 KR101826600 B1 KR 101826600B1 KR 1020160084752 A KR1020160084752 A KR 1020160084752A KR 20160084752 A KR20160084752 A KR 20160084752A KR 101826600 B1 KR101826600 B1 KR 101826600B1
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KR
South Korea
Prior art keywords
impeller
housing
fluid
flow path
rotor
Prior art date
Application number
KR1020160084752A
Other languages
Korean (ko)
Other versions
KR20180004968A (en
Inventor
장정철
이경주
양현성
강민석
Original Assignee
뉴모텍(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 뉴모텍(주) filed Critical 뉴모텍(주)
Priority to KR1020160084752A priority Critical patent/KR101826600B1/en
Priority to PCT/KR2017/005036 priority patent/WO2018008839A1/en
Publication of KR20180004968A publication Critical patent/KR20180004968A/en
Application granted granted Critical
Publication of KR101826600B1 publication Critical patent/KR101826600B1/en

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Classifications

    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • 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
    • 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
    • F04D13/0606—Canned motor 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
    • F04D29/007—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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • 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
    • 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

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

Abstract

The hot water circulation pump according to the present invention includes an upper housing 10 having a fluid inlet 11 and an outlet 12 formed therein and having a central inner upper shaft support portion; A lower housing 20 disposed corresponding to a lower side of the upper housing 10 and having a housing space therein; An inner housing 30 having an edge portion at the upper and lower housings 10 and 20 and a shaft supporting portion 32 formed at the center of the bottom of the bottom of the impeller receiving groove 31 formed at the central portion; An impeller rotatably installed inside the upper housing and in the impeller receiving groove such that a flow path for fluid flow is formed between the inner housing and the inner surface of the inner housing; A rotor installed inside the outer periphery of the impeller; And a stator installed in a receiving space between the inner housing and the lower housing corresponding to the rotor (60), characterized in that the fluid in the flow path is exhausted to the upper side of the impeller A plurality of vertical discharge holes communicating with the flow path are formed in the body so as to communicate with the plurality of vertical discharge holes on the side of the impeller body between the lower portion of the receiving plate formed with the blade pieces of the impeller and the upper portion of the rotor receiving portion, A plurality of horizontal discharge holes are formed.

Description

[0001] Pump for Circulating Water [

The present invention relates to a hot water circulation pump, and more particularly, to a hot water circulation pump which is capable of smoothly rotating an impeller by preventing air pressure generated when a fluid and air entering a lower portion of a pump chamber are discharged to a fluid outlet, To thereby ensure the fluid flow, and to prevent damage to the impeller, thereby improving durability.

Generally, a hot water circulation pump used as a water supply pump of a low-pressure boiler uses a centrifugal pump, and such a hot water circulation pump is disclosed in the prior art Patent No. 10-1204344. In this patent, after the impeller is rotated by the electromagnetic induction action between the stator and the rotor, the fluid (water) is introduced into the suction port side of the low-carburetor bottom, and then the fluid is pumped by the pumping action between the blade piece of the impeller body and the impeller upper cover The fluid that is discharged through the passage and flows along the discharge line via the discharge port is heated according to the heating action of the heating means and then transferred to the use place such as the heating mat through the connection line.

Particularly, in the prior art, a plurality of exhaust holes are formed in the impeller communicating with the flow path so that the fluid in the flow path formed between the outer surface of the impeller body and the impeller receiving groove of the inner housing is exhausted upward. Respectively.

Therefore, in the prior art, a part of the hot water (a part of the fluid) and air contained in the hot water discharged through the passage between the blade piece and the impeller upper cover during the pumping operation of the impeller are guided to the outer surface of the impeller body, So that cavitation does not occur in the flow path even when the impeller rotates at a high speed, so that the hot water is circulated smoothly, and the flow of the hot water is smoothly circulated in the impeller body, The rising of the impeller is prevented so that the vibration or noise generated by contacting the inner surface of the upper housing or the adjacent parts due to the rise of the impeller can be blocked.

However, since part of the hot water introduced into the flow path and air are exhausted through the plurality of exhaust holes passing through the impeller up and down at the time of driving the impeller by the blade of the impeller, the pressure of some hot water rising along the exhaust hole So that a large pressure difference occurs before and after the impeller blade is rotated at high speed, resulting in a rotation disturbing action that hinders the rotation of the impeller blade.

Accordingly, there is a problem that the flow of the fluid is not smooth due to the reduction of the impeller rotating force, and the noise and excessive vibration are generated, thereby damaging the impeller blades, and the durability of the impeller is greatly lowered.

In the present invention, since some hot water and air introduced into the flow path are discharged regardless of the blades of the impeller, the suction and discharge pressure differences of the fluid are made equal to each other to prevent damage to the impeller, So that the efficiency of the hot water circulation pump can be increased by improving the flow of the fluid.

An upper housing (10) having a fluid inlet (11) and an outlet (12) formed therein and having an upper shaft support (13) formed therein;

A lower housing 20 disposed corresponding to a lower side of the upper housing 10 and having a housing space therein;

An inner housing 30 having an edge portion at the upper and lower housings 10 and 20 and a shaft supporting portion 32 formed at the center of the bottom of the bottom of the impeller receiving groove 31 formed at the central portion;

And is rotatably received in the inside of the upper housing 10 and the impeller receiving groove 31 so that a flow path 40 for fluid flow is formed between the inner housing 30 and the inner surface of the inner housing 30. [ An impeller 50; And

A rotor 60 installed inside the outer periphery of the impeller 50; And a stator (70) installed in an accommodating space between the inner housing (30) and the lower housing (20) corresponding to the rotor (60)

A plurality of vertical discharge holes 52A communicating with the flow passage 40 are formed in the body 51 of the impeller 50 such that the fluid in the flow passage 40 is discharged upward, The side surface of the impeller body 51 between the lower portion of the support plate 54 formed with the reshaped piece 53 and the upper portion of the rotor accommodating portion 51d having the rotor accommodating space 51d 'communicates with the plurality of vertical exhaust holes 52A And a plurality of horizontal discharge holes 52B are formed in the discharge space.

In the present invention, some of the hot water and air entering the flow path are discharged to the sides of the impeller body and mixed with the discharge port to discharge the impeller blade, thereby smoothly rotating the impeller blade without rotation interruption pressure. So that damage to the impeller can be prevented, and the durability of the impeller can be greatly improved.

Further, since there is no pressure due to hot water in the flow path applied to the impeller blade, the rotation of the impeller can be smoothly performed, and excessive vibration and noise generated in the blade blade can be suppressed.

Further, according to the present invention, some hot water in the flow path is rapidly discharged toward the side of the impeller body by the suction force by the impeller driving irrespective of the impeller blade, and is mixed and discharged through the discharge port, And has an effect of increasing the efficiency.

1 is a perspective view of an embodiment of the present invention.
2 is an exploded perspective view of the present invention.
3 is a perspective view showing the impeller of the present invention.
4 is a longitudinal sectional view cut around the discharge port of the present invention.
5 is a longitudinal sectional view of the present invention.
6 is a longitudinal sectional view according to another embodiment of the present invention.
7 is a longitudinal sectional view according to still another embodiment of the present invention.

FIG. 3 is a perspective view of the impeller of the present invention, FIG. 4 is a vertical sectional view cut along the center of the discharge port of the present invention, and FIG. 5 is a vertical sectional view of the present invention, FIG. 6 is a vertical sectional view according to another embodiment of the present invention, and FIG. 7 is a vertical sectional view according to still another embodiment of the present invention.

Embodiments of the present invention will be described in detail with reference to the drawings.

The present invention relates to a hot water circulation pump (100), comprising: an upper housing (10) formed with a fluid inlet (11) and a discharge opening (12)

A lower housing 20 disposed corresponding to a lower side of the upper housing 10 and having a housing space therein;

An inner housing 30 having an edge portion at the upper and lower housings 10 and 20 and a shaft supporting portion 32 formed at the center of the bottom of the bottom of the impeller receiving groove 31 formed at the central portion;

And is rotatably received in the inside of the upper housing 10 and the impeller receiving groove 31 so that a flow path 40 for fluid flow is formed between the inner housing 30 and the inner surface of the inner housing 30. [ An impeller 50; And

A rotor 60 installed inside the outer periphery of the impeller 50; And a stator 70 installed in an accommodating space between the inner housing 30 and the lower housing 20 corresponding to the rotor 60. In the hot water circulating pump,

A plurality of vertical discharge holes 52A communicating with the flow passage 40 are formed in the body 51 of the impeller 50 such that the fluid in the flow passage 40 is discharged upward, The side surface of the impeller body 51 between the lower portion of the support plate 54 formed with the individual pieces 53 and the upper portion of the rotor accommodating portion 51d having the rotor accommodating space S communicates with the plurality of vertical exhaust holes 52A And a plurality of horizontal discharge holes 52B are formed to bore the pump part and the motor part for performing the pumping action in one body.

The upper housing 10 is formed with a suction port 11 and a discharge port 12 of a fluid and has an upper shaft support part 13 formed inside the center part and a central protrusion protruding in the shape of a circular cap is formed at the center. And a flange portion for fastening the inner housing 30 to the peripheral portion. The suction port 11 protrudes in the form of a pipe in a direction toward the inner side of the center protrusion and the discharge port 12 protrudes in a pipe shape perpendicular to the suction port 11 so as to communicate with the inner space on the side of the impeller 50 have.

The lower housing 20 is formed to be disposed on the lower side of the upper housing 10. The lower housing 20 is formed in a cylindrical shape which is hermetically closed downward to form a receiving space therein, (32) is seated and a fixing hole portion (21) into which a fastening member is inserted is formed.

The inner housing 30 is installed between the upper and lower housings 10 and 20 and has an impeller receiving groove 31 for accommodating the impeller 50 at a central portion thereof. 31 at the bottom of the center of the bottom portion.

A housing space for installing the stator 70 is formed in the outer periphery of the inner housing 30 in a state where the inner housing 30 is inserted into the lower housing 20. A lower housing 20 is provided at a lower portion of the shaft support 32, And a lower shaft supporting portion 33 is formed on the shaft supporting portion 32. The lower shaft supporting portion 33 is formed with a shaft insertion groove.

The impeller 50 is rotatably inserted into the upper housing 10 and the impeller receiving groove 31 to perform a substantial pumping action. The impeller 50 includes an outer surface of the impeller body 51, an inner surface of the inner housing 30, The flow path 40 is formed.

The impeller 50 includes an impeller body 51, an impeller rotating shaft 55 installed on the impeller body 51, an impeller upper cover 56 provided at the upper and lower portions of the impeller body 51, (57).

The impeller body 51 has a cylindrical body 51 having a shaft insertion hole 51a formed therein and an inlet groove 51b formed in an upper portion of the body, The rotor 60 is embedded in and accommodated in the rotor accommodating space 51d 'of the electron receiving portion 51d while a plurality of blade pieces 53 are formed around the upper portion of the body on which the inlet groove 51b is formed have. A fastening hole 53a for fastening the impeller upper cover 56 is formed on the upper surface of the blade piece 53.

Particularly, in the conventional pump, the air contained in some of the fluid and the fluid to be sucked and discharged in the suction and discharge of the fluid enters into the flow path 40 and is collected at the outer lower side of the impeller body 51, However, in order to solve this problem, in order to solve this problem, the fluid in the flow path 40 is arranged on the upper side The impeller 50 of the present invention has a body 51 of the impeller 50 communicating with the flow path 40 so that the fluid in the flow path 40 is discharged upward. Is formed by drilling the vertical discharge hole 52A of the impeller body 52A between the lower portion of the support plate 54 on which the blade piece 53 of the impeller is formed and the upper portion of the rotor accommodating portion 51d having the rotor accommodating space 51d ' 51) And a plurality of horizontal discharge holes 52B communicating with the plurality of vertical discharge holes 52A are formed in the side surface of the horizontal discharge hole 52B so that the fluid in the flow passage 40 rising through the horizontal discharge hole 52B and the suction holes 11 Can be mixed in the mixing space (S) and discharged through the discharge port (12).

Therefore, when the impeller 50 is rotated at a high speed, some of the fluid and the air staying in the flow path 40 are separated from the plurality of vertical discharge holes 52A by a suction force generated by the rotation of the blades 53 The fluid is mixed with the fluid flowing through the suction port 11 and discharged through the discharge port 12, thereby smoothly circulating the fluid. As a result, bubbles are prevented from being generated and cavitation The fluid in the flow path 40 is discharged through the mixing space S without colliding with the blade piece 53 of the impeller 50 so that excessive vibration or noise can be prevented It is possible to improve the durability of the impeller 50 by eliminating the damage of the impeller 50 and to make the upper and lower hydraulic pressure differences of the impeller 50 smooth through the smooth fluid flow, Can.

The vertical discharge holes 52A are formed in a plurality of locations at the same radius with respect to the axial insertion hole 51a of the impeller body 51 so as to prevent eccentric rotation during the rotation of the impeller 50, So that wear and damage can be prevented.

7, it is possible to form the vertical discharge hole 52A and the horizontal discharge hole 52B by drilling an inclined discharge hole 52C that is not vertical or horizontal, 6, a spiral discharge groove 52C 'may be provided at a predetermined interval on the inner peripheral surface of the vertical discharge hole 52A, the horizontal discharge hole 52B and the inclined discharge hole 52C, The lower inlet side diameter of the hole 52A may be formed larger than the upper outlet side diameter of the horizontal discharge hole 52B.

In the former case, the discharge hole 52C is inclined so that the discharge of air including the fluid or the fluid inside the flow path 40 can be performed more smoothly. In the latter case, the spiral discharge groove 52C 'so that the discharge of the air including the fluid or the fluid inside the flow path 40 can be performed more smoothly and the lower inlet diameter of the vertical discharge hole 52A can be discharged to the horizontal discharge hole 52B, the fluid inside the flow path 40 can be discharged in a nozzle manner at the outlet of the horizontal discharge hole 52B, so that discharge can be performed more quickly.

The diameter of the lower inlet of the inclined discharge hole 52C may be larger than the diameter of the upper outlet of the inclined discharge hole 52C and the inner diameter of each of the vertical discharge hole 52A and the horizontal discharge hole 52B A threaded discharge groove 52C 'may also be formed on the surface of the substrate.

On the other hand, the impeller rotating shaft 55 is provided on the outer peripheral surface thereof and constitutes a shaft supporting member 51c to be inserted into the shaft insertion hole 51a.

The impeller upper cover 56 includes an engaging boss 56a inserted into the fastening hole formed in the blade piece 53 on the bottom surface of the body having a disk shape and an engaging boss 56b inserted into the inlet port 11 and the inlet grooves of the impeller body 51 51b are formed in the through-hole 56b.

The impeller lower cover 57 is configured to be coupled to the bottom of the impeller body 51 so as to close the rotor accommodating space 51d 'side. Reference numeral 57a denotes a rotary shaft passage hole, 57b denotes a fitting projection, to be.

The rotor 60 is installed inside the outer periphery of the impeller 50 and is composed of a circular ring magnet having N poles and S poles repeatedly magnetized, (51d ').

The stator 70 includes a core 71 wound around the rotor 60 to be installed at a position corresponding to the rotor 60 for electromagnetic induction with the rotor 60, And a lower core support member 73 coupled to the lower portion to support the lower side of the core 71. The core 71 has an overall circular ring shape as a whole The upper and lower core support members 72 and 73 are formed in a shape in which a plurality of guide protrusions are protruded from the top and bottom surfaces of the ring-shaped disc.

In the figure, reference numeral 80 denotes a circuit board, and 90 denotes a power supply connector.

In the above description, the hot water circulating pump 100 for performing the pumping operation for circulating the heated hot water to the use of the heating mat or the like is described, but the present invention can be applied to a circulating pump for sucking and discharging a fluid other than hot water And a description of the heating means according to the power supply added to the hot water circulation pump will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that various variations and applications are possible. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

10: upper housing 11: inlet
12: outlet 20: lower housing
21: fixed hole portion 30: inner housing
31: impeller receiving groove 32: shaft supporting portion
40: Flow path 50: Impeller
51: body 51a: shaft insertion hole
51b: inflow groove 51c: shaft supporting member
51d: rotor accommodating portion 51d ': rotor accommodating space
52A: Vertical discharge hole 52B: Horizontal discharge hole
52C: oblique discharge hole 52C ': helical discharge groove
53: Revision of Day 54:
55: Impeller rotating shaft 56, 57: Upper and lower cover
60: rotor 70: stator
71: core 72, 73: upper and lower core support members
80: circuit board 90: power supply connector
100: Hot water circulation pump

Claims (4)

An upper housing 10 having a fluid inlet 11 and an outlet 12 formed therein and having an upper shaft support portion inside the middle;
A lower housing 20 disposed corresponding to a lower side of the upper housing 10 and having a housing space therein;
An inner housing 30 having an edge portion at the upper and lower housings 10 and 20 and a shaft supporting portion 32 formed at the center of the bottom of the bottom of the impeller receiving groove 31 formed at the central portion;
And is rotatably received in the inside of the upper housing 10 and the impeller receiving groove 31 so that a flow path 40 for fluid flow is formed between the inner housing 30 and the inner surface of the inner housing 30. [ An impeller 50; And
A rotor 60 installed inside the outer periphery of the impeller 50; And a stator (70) installed in a receiving space between the inner housing (30) and the lower housing (20) corresponding to the rotor (60);
, ≪ / RTI >
A plurality of vertical discharge holes 52A communicating with the flow path 40 are formed in the body 51 of the impeller 50 so that the fluid in the flow path 40 is discharged upward,
The plurality of vertical discharge holes 52A are formed on the side of the impeller body 51 between the lower portion of the support plate 54 formed with the impeller blade segments 53 and the upper portion of the rotor accommodating portion 51d having the rotor accommodating space S, A plurality of horizontal discharge holes 52B communicating with the horizontal discharge holes 52B are formed,
The fluid staying in the flow path 40 rising through the horizontal discharge hole 52B and the fluid flowing through the suction port 11 are mixed in the mixing space S and discharged through the discharge port 12 Features a hot water circulation pump. The hot water circulation pump according to claim 1, wherein the inlet diameter of the vertical discharge hole (52A) is larger than the outlet diameter of the horizontal discharge hole (52B). The hot water circulation pump according to claim 1, wherein a plurality of inclined discharge holes (52C) communicating with the flow path (40) are formed in the body (51) of the impeller (50). The hot water circulation pump according to claim 3, wherein a spiral discharge groove (52C ') is formed on an inner circumferential surface of the inclined discharge hole (52C).


KR1020160084752A 2016-07-05 2016-07-05 Pump for Circulating Water KR101826600B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020160084752A KR101826600B1 (en) 2016-07-05 2016-07-05 Pump for Circulating Water
PCT/KR2017/005036 WO2018008839A1 (en) 2016-07-05 2017-05-16 Pump for circulating water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160084752A KR101826600B1 (en) 2016-07-05 2016-07-05 Pump for Circulating Water

Publications (2)

Publication Number Publication Date
KR20180004968A KR20180004968A (en) 2018-01-15
KR101826600B1 true KR101826600B1 (en) 2018-02-07

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WO (1) WO2018008839A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102048068B1 (en) * 2018-07-04 2019-11-22 나경인터내셔날 주식회사 hot water supply pump of hot water mat
IT201800009450A1 (en) * 2018-10-15 2020-04-15 Bosch Gmbh Robert PUMPING GROUP FOR FEEDING A FLUID IN A HYDRAULIC CIRCUIT OF A VEHICLE
KR102137319B1 (en) * 2018-10-17 2020-07-23 뉴모텍(주) Pump for Circulating Water
KR102121118B1 (en) * 2018-10-17 2020-06-09 뉴모텍(주) Shaftless Pump for Circulating Water

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015148165A (en) * 2014-02-05 2015-08-20 三菱重工業株式会社 diaphragm, and centrifugal rotary machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960011157A (en) * 1994-09-28 1996-04-20 배순훈 Hot water circulating pump in which the impeller is condensed on the pump housing
KR20110014282A (en) * 2009-08-05 2011-02-11 김유권 Circulation pump and water circulation mat
KR101204344B1 (en) * 2010-11-26 2012-11-27 (주) 아이에스-텍 Hot water circulating pump
KR20150085241A (en) * 2014-01-15 2015-07-23 주식회사 에스엠 Sirculation pump for a hot-water

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015148165A (en) * 2014-02-05 2015-08-20 三菱重工業株式会社 diaphragm, and centrifugal rotary machine

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WO2018008839A1 (en) 2018-01-11
KR20180004968A (en) 2018-01-15

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