CN106089739B - Hot water circulating pump - Google Patents
Hot water circulating pump Download PDFInfo
- Publication number
- CN106089739B CN106089739B CN201610687743.XA CN201610687743A CN106089739B CN 106089739 B CN106089739 B CN 106089739B CN 201610687743 A CN201610687743 A CN 201610687743A CN 106089739 B CN106089739 B CN 106089739B
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- space
- radial
- terminal box
- radiator
- hot water
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Classifications
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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
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The present invention relates to a kind of hot water circulating pumps, solve the problems, such as heat dissipation, accommodation space.It includes pump case, is arranged in the pump case and by the impeller of pump of motor drive, the axial direction of impeller of pump is arranged in the motor, the electric machine casing and the pump case pass through first flange to connection, terminal box is set outside the electric machine casing, the terminal box is used to accommodate the electrical connection of the electrical and/or electronic component and motor of motor control assembly, it is characterized in that the terminal box at least has, there are three spaces, including an axial space and two radial spaces, radial space described in two is all connected to the axial space.Its effect: improving the structure of terminal box, has not only expanded the accommodation space of terminal box, but also meets compact-sized, the good requirement of heat dissipation effect, sufficiently benefit motor peripheral space, meets the heat dissipation of pump and terminal box, and meet the overall dimensions requirement of product.
Description
Technical field
The present invention relates to a kind of circulating pump more particularly to a kind of hot water circulating pumps.
Background technique
Hot water circuit electric pump especially permanent magnet synchronous motor hot water circulating pump has energy-efficient, low noise, converting operation
The advantages of, it is used widely.Such electric pump need electronics housing (terminal box) for accommodate motor control assembly (
Control drive control device/driving plate, mains connection/electrical connection etc.)；Motor drive controller includes microprocessor and power member
Part, usual power device need that radiator is arranged.
Hot water circulating pump forms high temperature on electric machine casing and the pump housing when pumping hot water, should avoid high temperature logical as far as possible
Overshoot or conduction enter terminal box (especially power electronic device be arranged in terminal box when), the heat that needs to generate and
When, be effectively and safely discharged.
In use, can the electrical and/or electronic component of junction box can also generate heat, timely and effective incite somebody to action
The heat that electrical and/or electronic component generates radiates, not only related with the size of heat dissipation area, also with the layout of radiator
There is very big association with the layout of internal component.
With the increase of permanent-magnetic variable-frequency pump power, the power of power component is increasing, the volume of driving plate and it is electrical and/
Or number of electronic components is all increasing, the assembly space needed is also increasing.Hot water circulating pump limit by application again
System, needs lesser overall dimensions, under the premise of pump case and certain electric machine casing size, then limits the ruler of terminal box
It is very little.
In order to which the heat for generating hot water circulating pump is discharged in time, and in order to which the heat for generating junction box is arranged in time
Out, need to optimize the structure and set-up mode of terminal box, however existing junction box structure and set-up mode are difficult to meet pump work
The demand of the increasingly increased hot water circulating pump of rate.Therefore, it is necessary to design a compact layout, the good hot water of heat dissipation effect follows
Ring pump is necessary.
Summary of the invention
A kind of hot water circulating pump is provided it is an object of the invention to solve the above problem of the existing technology, improvement connects
The structure of wire box, had not only expanded the accommodation space of terminal box, but also met compact-sized, the good requirement of heat dissipation effect, sufficiently benefit electricity
Machine peripheral space, meets the heat dissipation of pump and terminal box, and meets the overall dimensions requirement of product.
What above-mentioned technical purpose of the invention mainly solved by the following technical programs: hot water circulating pump, including pump case
The impeller of pump in the pump case and being driven by motor is arranged in body, and the axial direction of impeller of pump, the motor is arranged in the motor
Shell and the pump case pass through flange to connection, and terminal box is arranged in the electric machine casing outside, and the terminal box is for accommodating electricity
The electrical and/or electronic component of machine control device and the electrical connection of motor, it is characterised in that the terminal box at least has three
A space, including an axial space and two radial spaces, radial space described in two all connect with the axial space
It is logical.
Present document relates to axial direction refer to the direction substantially vertically extended relative to impeller of pump rotation axis；Radial direction refers to parallel
In the face that impeller of pump rotation axis extends.
In the technical scheme, the structure for improving terminal box makes three skies using the terminal box at least three spaces
Between be circumferentially distributed in motor periphery, abundant benefit motor peripheral space forms compact effect, the overall dimensions for meeting product are wanted
It asks.Meanwhile at least tool is there are three space (certainly, if three radial spaces of setting are also feasible), for accommodate it is electrical and/or
The electrical connection of electronic component and motor expands the accommodation space of terminal box, meets the increasingly increased requirement of pump power.And
And it is circumferentially distributed in motor periphery, there is biggish heat dissipation area and heat-dissipating space, meet the good requirement of heat dissipation effect.Tool
There is gap to prevent terminal box and electric machine casing from directly contacting, prevent heat transfer between the two, the heat dissipation reduced between the two is dry
It disturbs.
As further improving and supplementing to above-mentioned technical proposal, the present invention uses following technical measures: the wiring
The appearance interplanar distance of the inside of box and the electric machine casing cooperates.The spacing of formation, between making between terminal box and electric machine casing
Every space formed convection channel, make the heat on the heat and terminal box on electric machine casing by way of convection current in time, effectively,
Quickly discharge, improves heat dissipation effect.
About the set-up mode of two radial spaces, at least following two scheme:
The first scheme: radial space described in two connects and composes L shape, by radial empty described in partition separation two
Between, make two described in radial space be formed as two separate spaces, reduce the type of thermal communication between two radial spaces, reduce two
Heat in a radial space is on mutual influence.Two radial spaces are all connected to axial space again, for conveniently making radial direction
The component in space and the component of axial space form the connection of electrical or electric wire.
The radial space described in two connects and composes in L-shaped scheme, radial space described in two and the axial direction
Structure of leaving a blank is equipped between space, the structure of leaving a blank forms tool operation cavity through the terminal box, described for dismounting
Terminal box is fixed on the connector on the electric machine casing.When dismounting terminal box, operational instrument can pass through structure of leaving a blank
Operation cavity acts on connector, makes connector that connector link box and electric machine casing are separated or made from terminal box.
Second scheme: radial space described in two is separately positioned on the opposite two sides of the axial space, makes described
Terminal box is in U-shape.All with axial space connection, two radial spaces are relatively independent opposite to each other for the upper end of two radial spaces, prevent
Heat in two radial spaces is on mutual influence.The terminal box for the structure that is in U-shape, when terminal box is connected to electric machine casing,
It can easily operate.
Inlet and outlet are set in the pump case, and are respectively set first at the inlet and outlet position
Pipe screw thread and the second pipe screw thread, the free end of radial space described in two in the axial direction with first pipe screw thread and
The cooperation of two pipe screw thread intervals.That is, reducing the limitation in butted line capsule direction, terminal box can be according to need in axial direction
Being rotated by 90 ° installation, (if terminal box and electric machine casing are equipped with suitable connecting portion, any rotation is connect in the axial direction
Wire box), terminal box can be smoothly installed, not at entery and delivery port the first pipe screw thread and the second pipe screw thread be in contact, prevent
Only the first pipe screw thread and third flange jack up terminal box, can be by the stable link box to electric machine casing of connector.
Electric power incoming line jack, the electric power incoming line jack and two diameters are set in the radial sidewalls of the axial space
It is arranged to space spacing, for making the electric power incoming line jack far from the electrical and/or positions of electronic parts setting, the electricity
Source inlet wire jack is for being arranged cable lock.
Convex connecting column is arranged in the end of the electric machine casing, and the bottom of the axial space is fixed on by connector
On connecting column, it is fixed on the terminal box on the electric machine casing.Connecting column is set, the company of connector is on the one hand used to form
Connect pedestal, on the other hand for jacking up terminal box, make the axial space in terminal box bottom and electric machine casing outer surface it
Between have spacing, prevent heat dissipation interfere.
Axially open is arranged in the outside of the axial space, and operation panel, the operation panel is arranged in the axially open
Form the cover board of the axial space；The upper axial opening of axial space is arranged in operation panel, facilitates operation and observation,
On the other hand, and as cover board use, be conducive to simplify structure, while also helping and reduce cost.
Radial space described in two is the first radial space and the second radial space, first radial space and second
The first radial opening and the second radial opening are respectively set on the outside of radial space, first radial opening and the second radial direction are opened
The first radiator and the second radiator is respectively set in mouth, and first radiator and the second radiator are respectively formed first diameter
To the cover board in space and the second radial space.Since operation panel is arranged in axial space, operation panel is used for a long time in order to prevent
In hot environment, in favor of improving the service life of operation panel, usually, the big component of calorific value is arranged in the first diameter
The first radiator and the second radiator is respectively set in order to rapid cooling to space and the second radial space, meanwhile, it is
Structure simplifies, and the first radiator and the second radiator are respectively formed as two cover boards again and are used to close the first radial space and the
Two radial spaces.Power component
It is respectively set the first driving plate and the second driving plate in first radial space and the second radial space, described
Power component, first driving plate and second are set towards the one side of corresponding radiator in one driving plate and the second driving plate
One side setting control component in driving plate far from corresponding radiator, the power component are bonded first heat dissipation respectively
The inner surface of device and the second radiator.The big component (power component) of calorific value in first driving plate and the second driving plate
It is fitted on the first radiator and the second radiator, is conducive to rapid cooling, improve driving plate and electrical and/or electronics thereon
Element (service life for being improved particularly power component) service life.
The invention has the benefit that the structure of 1, improvement terminal box, had not only expanded the accommodation space of terminal box, but also meet
Compact-sized, the good requirement of heat dissipation effect, sufficiently benefit motor peripheral space, meet the heat dissipation of pump and terminal box, and meet and produce
The overall dimensions requirement of product.2, the appearance interplanar distance of the inside of terminal box and the electric machine casing cooperates, and makes terminal box and motor
Clearance space between shell forms convection channel, makes side of the heat on the heat and terminal box on electric machine casing by convection current
Formula in time, effectively, is quickly discharged, and improves heat dissipation effect.3, terminal box axially can be rotated by 90 ° installation as needed, all
Terminal box can be smoothly installed, not at entery and delivery port the first pipe screw thread and the second pipe screw thread be in contact, prevent the first pipe
Screw thread and third flange jack up terminal box, can be by the stable link box to electric machine casing of connector.4, operating surface
The upper axial opening of axial space is arranged in plate, facilitates operation, on the other hand, and uses as cover board, is conducive to simplify knot
Structure, while also helping and reduce cost.5, the first driving plate and the second driving plate are fitted in the first radiator and the second radiator
On, be conducive to rapid cooling, improve driving plate and electrical and/or electronic component thereon, meanwhile, in order to which structure simplifies, first
Radiator and the second radiator be respectively formed as again two cover boards for close the first radial space and the second radial space.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention.
Fig. 2 is the backsight structural representation of Fig. 1.
Fig. 3 is a kind of schematic cross-sectional view of the invention.
Fig. 4 is the configuration schematic diagram of terminal box in the present invention.
Fig. 5 is the structural schematic diagram of terminal box opening state in the present invention.
Fig. 6 is the configuration schematic diagram of operation panel in the present invention.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: hot water circulating pump, as shown in Figure 1-3, it includes pump case 1, is arranged in the pump case 1 and by electricity
The axial direction of impeller of pump 4 is arranged in the impeller of pump of machine driving, the motor, and the electric machine casing 2 passes through flange with the pump case 1
To connection, terminal box 3 is set outside the electric machine casing 1, the terminal box 3 for accommodate the electrical of motor control assembly and/or
The electrical connection of electronic component and motor, the terminal box 3 at least has there are three space, including an axial space 31 and two
Radial space 32,33, radial space described in two are all connected to the axial space.
Present document relates to axial direction refer to the direction substantially vertically extended relative to impeller of pump rotation axis；Radial direction refers to parallel
In the face that impeller of pump rotation axis extends.
In the technical scheme, the structure for improving terminal box makes three skies using the terminal box at least three spaces
Between be circumferentially distributed in motor periphery, abundant benefit motor peripheral space forms compact effect, the overall dimensions for meeting product are wanted
It asks.Meanwhile at least tool is there are three space (certainly, if three radial spaces of setting are also feasible), for accommodate it is electrical and/or
The electrical connection of electronic component and motor expands the accommodation space of terminal box, meets the increasingly increased requirement of pump power.And
And it is circumferentially distributed in motor periphery, there is biggish heat dissipation area and heat-dissipating space, meet the good requirement of heat dissipation effect.Tool
There is gap to prevent terminal box and electric machine casing from directly contacting, prevent heat transfer between the two, the heat dissipation reduced between the two is dry
It disturbs.
In the present embodiment, terminal box has an axial space 31 and two radial spaces 32,33, and two radial empty
Between be distributed as the first radial space 32 and the second radial space 33.
The appearance interplanar distance of the inside of the terminal box 3 and the electric machine casing 2 cooperates.The spacing of formation, makes terminal box
Clearance space between electric machine casing forms convection channel, make heat on the heat and terminal box on electric machine casing by pair
The mode of stream in time, effectively, is quickly discharged, and improves heat dissipation effect.
About the set-up mode of two radial spaces, at least following two scheme:
The first scheme: as shown in Figure 1 and Figure 4, radial space 32,33 described in two connects and composes L shape, by one every
Plate 20 separate two described in radial space, make two described in radial space be formed as two separate spaces, reduce two radial directions
Type of thermal communication between space reduces the heat in two radial spaces to mutual influence.Two radial spaces again all with axial direction
Space connection, component and the component of axial space for conveniently making radial space form electrical or electric wire and connect.It adopts
Being also helped with the radial space 32,33 of L-shaped structure facilitates electric wire to connect.The technical program is preferred embodiment.
As shown in Figure 1, the radial space 32,33 described in two connects and composes in L-shaped scheme, radial direction described in two
Structure 10 of leaving a blank is equipped between space and the axial space, the structure 10 of leaving a blank forms tool behaviour through the terminal box
Make cavity, the connector being fixed on the electric machine casing 2 for dismounting the terminal box 3.When dismounting terminal box, operative employee
Tool can act on connector by the operation cavity for structure of leaving a blank, and separate connector from terminal box or fix connector
Terminal box and electric machine casing.
Second scheme: radial space described in two is separately positioned on the opposite two sides of the axial space, makes described
Terminal box is in U-shape.All with axial space connection, two radial spaces are relatively independent opposite to each other for the upper end of two radial spaces, prevent
Heat in two radial spaces is on mutual influence.The terminal box for the structure that is in U-shape, when terminal box is connected to electric machine casing,
It can easily operate.
As shown in Figure 1, water inlet 11 and water outlet 12 are arranged in the pump case 1, and in the water inlet 11 and water outlet
The first pipe screw thread 13 and the second pipe screw thread 14 is respectively set in 12 positions of mouth, and the free end of radial space 32,33 described in two exists
Cooperate on axial direction with 14 pairs of intervals of first pipe screw thread 13 and third flange.That is, it is box-packed to reduce butted line
Limitation with direction, terminal box axially can be rotated by 90 ° installation (if be equipped on terminal box and electric machine casing as needed
Suitable connecting portion arbitrarily rotates terminal box in the axial direction), terminal box can be smoothly installed, not and at entery and delivery port
The first pipe screw thread and the second pipe screw thread be in contact, prevent the first pipe screw thread and third flange from jacking up terminal box, can pass through
On the stable link box to electric machine casing of connector.
As shown in Figure 1, electric power incoming line jack 25, the electric power incoming line jack are arranged in the radial sidewalls of the axial space
It is arranged with two radial space spacing, for making the electric power incoming line jack far from the electrical and/or electronic component position
It installs, the electric power incoming line jack 25 is for being arranged cable lock 26.
As shown in figure 3, convex connecting column 21, the bottom of the axial space 31 is arranged in the end of the electric machine casing 2
It is fixed on connecting column 21 by connector 23, is fixed on the terminal box 3 on the electric machine casing 2.Setting connecting column, one
Aspect is used to form the connection pedestal of connector, on the other hand for jacking up terminal box, makes the bottom of the axial space in terminal box
There is spacing between portion and the outer surface of electric machine casing, prevent heat dissipation from interfering.
As shown in Figures 4 and 5, axially open 311 is arranged in the outside of the axial space 31, and the axially open 311 is arranged
Operation panel 12, the operation panel 12 form the cover board of the axial space 31；The upper of axial space is arranged in operation panel
Portion's axially open facilitates operation, on the other hand, and uses as cover board, is conducive to simplify structure, at the same also help reduce at
This.
The first radial opening 321 and second is respectively set in the outside of first radial space 32 and the second radial space 33
Radial opening 331, first radial opening 321 and the second radial opening 331 are respectively set the first radiator 13 and second and dissipate
Hot device 14, first radiator 13 and the second radiator 14 are respectively formed first radial space 32 and the second radial space
33 cover board.Since operation panel is arranged in axial space, operation panel is used for a long time in hot environment, in favor of mentioning in order to prevent
The service life of high operation panel, usually, the big component setting of calorific value are radial empty in the first radial space and second
Between, in order to rapid cooling, the first radiator and the second radiator is respectively set, meanwhile, in order to which structure simplifies, the first heat dissipation
Device and the second radiator be respectively formed as again two cover boards for close the first radial space and the second radial space.
The first driving plate 15 and the second driving plate is respectively set in first radial space 32 and the second radial space 33
16, power component is set towards the one side of corresponding radiator in first driving plate 15 and the second driving plate 16, described the
One side setting control component in one driving plate and the second driving plate far from corresponding radiator, the power component paste respectively
Close the inner surface of first radiator 13 and the second radiator 14.Calorific value in first driving plate and the second driving plate is big
Component (power component) is fitted on the first radiator and the second radiator, is conducive to rapid cooling, improve driving plate and
Electrical and/or electronic component (service life for being improved particularly power component) service life thereon.
For the first cooling fin and the second cooling fin on the first radiator 13 and the second radiator 14, the first heat dissipation
Piece and the second cooling fin are that one-to-one mode is arranged, and the mode axially flushed is arranged.
For operation panel 12, as shown in fig. 6, including cover board 18, the display and operation of 18 inside of cover board are set
The pad pasting 19 in 18 outside of cover board is arranged in plate 17.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention.In the above-described embodiments,
The invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, equally replace
It changes, improve, should all be included in the protection scope of the present invention.
Claims (8)
1. including pump case, the impeller of pump in the pump case and being driven by motor is arranged in hot water circulating pump, the motor is set
Set the axial direction in impeller of pump, the electric machine casing of the motor and the pump case by flange to connection, outside the electric machine casing
Terminal box is set, the terminal box is used to accommodate the electrical connection of the electrical and/or electronic component and motor of motor control assembly,
It is characterized in that the terminal box at least has, there are three spaces, including an axial space and two radial spaces, described in two
Radial space connect and compose L shape, radial space described in two is all connected to the axial space；Radial direction described in two
Structure of leaving a blank is equipped between space and the axial space, it is logical to form tool operation through the terminal box for the structure of leaving a blank
Chamber, the connector being fixed on the electric machine casing for dismounting the terminal box；The structure of leaving a blank is positioned at described in two
The connecting portion of radial space and the inside for being located at connecting portion.
2. hot water circulating pump according to claim 1, it is characterised in that the inside of the terminal box and the electric machine casing
Appearance interplanar distance cooperation.
3. hot water circulating pump according to claim 2, it is characterised in that radial space described in two passes through a partition point
The radial space described in two, make two described in radial space be formed as two separate spaces.
4. hot water circulating pump according to claim 3, it is characterised in that inlet and outlet are set in the pump case,
And the first pipe screw thread and the second pipe screw thread is respectively set at the inlet and outlet position, radial space described in two
Free end cooperates with first pipe screw thread and the second pipe screw thread interval in the axial direction.
5. hot water circulating pump according to claim 4, it is characterised in that electricity is arranged in the radial sidewalls of the axial space
Source inlet wire jack, the electric power incoming line jack and two radial space spacing are arranged, for making the electric power incoming line jack
Far from the electrical and/or positions of electronic parts setting, the electric power incoming line jack is for being arranged cable lock.
6. hot water circulating pump according to claim 5, it is characterised in that convex company is arranged in the end of the electric machine casing
Column is connect, the bottom of the axial space is fixed on connecting column by connector, and the terminal box is made to be fixed on the motor casing
On body.
7. hot water circulating pump according to claim 6, it is characterised in that axially open is arranged in the outside of the axial space,
Operation panel is arranged in the axially open, and the operation panel forms the cover board of the axial space；
Radial space described in two is the first radial space and the second radial space, and first radial space and second is radially
The first radial opening and the second radial opening, first radial opening and the second radial opening point are respectively set on the outside of space
First radiator and the second radiator are not set, and it is radial empty that first radiator and the second radiator are respectively formed described first
Between and the second radial space cover board.
8. hot water circulating pump according to claim 7, it is characterised in that first radial space and the second radial space
The first driving plate and the second driving plate is inside respectively set, the corresponding radiator of direction in first driving plate and the second driving plate
Power component, the one side setting control member far from corresponding radiator in first driving plate and the second driving plate are set on one side
Device, the power component are bonded the inner surface of first radiator and the second radiator respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610687743.XA CN106089739B (en) | 2016-08-17 | 2016-08-17 | Hot water circulating pump |
| PCT/CN2017/092788 WO2018032919A1 (en) | 2016-08-17 | 2017-07-13 | Hot water circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610687743.XA CN106089739B (en) | 2016-08-17 | 2016-08-17 | Hot water circulating pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089739A CN106089739A (en) | 2016-11-09 |
| CN106089739B true CN106089739B (en) | 2019-07-26 |
Family
ID=58069844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610687743.XA Active CN106089739B (en) | 2016-08-17 | 2016-08-17 | Hot water circulating pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106089739B (en) |
| WO (1) | WO2018032919A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089739B (en) * | 2016-08-17 | 2019-07-26 | 新界泵业(浙江)有限公司 | Hot water circulating pump |
| CN107620731A (en) * | 2017-07-19 | 2018-01-23 | 合肥新沪屏蔽泵有限公司 | A kind of attachment structure between the pump housing and support in canned motor pump |
| CN110469514A (en) * | 2018-05-11 | 2019-11-19 | 上海威派格智慧水务股份有限公司 | A kind of pumping plant |
| CN108678965B (en) * | 2018-06-20 | 2024-06-04 | 广州奥姆特机电设备制造有限公司 | Fully radiating shielding variable frequency circulating pump |
| CN110461124A (en) * | 2019-07-04 | 2019-11-15 | 诺丁汉(余姚)智能电气化研究院有限公司 | Electric machine controller |
| WO2021147321A1 (en) * | 2020-01-22 | 2021-07-29 | 中山大洋电机股份有限公司 | Constant air volume induced draft fan |
| CN114263618B (en) * | 2021-12-27 | 2024-05-10 | 江苏维尔特泵业有限公司 | Energy-saving heat-dissipation type high-pressure hot water circulating pump |
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| CN104136781A (en) * | 2011-12-23 | 2014-11-05 | 格兰富控股联合股份公司 | Electric motor |
| CN203617829U (en) * | 2013-12-11 | 2014-05-28 | 巨大矿业有限公司 | Variable frequency motor having detachable junction box |
| CN206092437U (en) * | 2016-08-17 | 2017-04-12 | 新界泵业集团股份有限公司 | Hot water circulating pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106089739A (en) | 2016-11-09 |
| WO2018032919A1 (en) | 2018-02-22 |
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Effective date of registration: 20190428 Address after: 317525 Ocean City Industrial Zone, Dashi Town, Wenling City, Taizhou, Zhejiang Applicant after: New Territories Pump Industry (Zhejiang) Co., Ltd. Address before: 317525 Ocean City Industrial Zone, Dashi Town, Wenling City, Taizhou, Zhejiang Applicant before: Shimge Pump Industry Group Co., Ltd. |
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Denomination of invention: Hot water circulating pump Effective date of registration: 20201231 Granted publication date: 20190726 Pledgee: Wenling Branch of Bank of China Ltd. Pledgor: SHIMGE PUMP (ZHEJIANG) Co.,Ltd. Registration number: Y2020330001366 |
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