CN107764126A - Heat exchanger and its pumping equipment - Google Patents
Heat exchanger and its pumping equipment Download PDFInfo
- Publication number
- CN107764126A CN107764126A CN201711183926.9A CN201711183926A CN107764126A CN 107764126 A CN107764126 A CN 107764126A CN 201711183926 A CN201711183926 A CN 201711183926A CN 107764126 A CN107764126 A CN 107764126A
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- China
- Prior art keywords
- cavity volume
- heat exchanger
- communicating passage
- pumping equipment
- dividing plate
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- Legal status (The legal status 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 status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention belongs to heating-cooling equipment field, specifically provides a kind of heat exchanger and its pumping equipment.Present invention seek to address that the ponding in the top cavity volume that existing shell and tube exchanger internal partition is formed with bobbin carriage, tube sheet causes the problem of corrosion to shell and tube exchanger.Therefore, the pumping equipment of the present invention includes the communicating passage and suspension ball being arranged on dividing plate, the communicating passage is used to connect the dividing plate upper cavity volume of both sides and lower cavity volume up and down.Suspension ball is set in lower cavity volume, and suspension ball, which floats, when the liquid of cavity volume is filled with instantly separates communicating passage；Instantly suspension ball is fallen by Action of Gravity Field when the liquid of cavity volume is drained, and communicating passage is opened.Therefore, pumping equipment of the invention can be such that communicating passage is separated when heat exchanger works, and do not work and be turned in heat exchanger, and the liquid heat exchanging device for avoiding accumulation in cavity volume and lower cavity volume causes to corrode.
Description
Technical field
The invention belongs to heating-cooling equipment field, specifically provides a kind of heat exchanger and its pumping equipment.
Background technology
The shell and tube exchanger having in the prior art mainly includes housing, tube sheet, dividing plate, tube bank, deflection plate and bobbin carriage.Its
In, the both ends of housing are respectively arranged with tube sheet, and the both ends of more tube banks are each passed through and are fixed on tube sheet.Two bobbin carriage difference
The outside of two tube sheets is arranged on, makes to form closed cavity volume between bobbin carriage and tube sheet, is set on one in usual two bobbin carriages
It is equipped with two liquid in-out mouths up and down.Dividing plate is horizontally disposed between bobbin carriage and tube sheet, and upper and lower two liquid in-out mouths are separated, made
The first passage of U-shaped is formed between upper and lower two liquid in-out mouths and more tube banks, another bobbin carriage.
Further, by restrain through multiple deflection plates be arranged equally spaced at two tube sheets, make housing and baffling
Roundabout second channel is formed between plate.Housing is respectively arranged with a liquid in-out mouth at the both ends of second channel, for making liquid
A liquid in-out mouth flows into second channel to body therefrom, flows out second channel from another liquid in-out mouth.
Shell and tube exchanger is passed through the first liquid at work, in first passage, and second liquid is passed through in second channel, the
One liquid and second liquid carry out heat exchange by restraining, and realize the purpose for heating or freezing to target liq.
Above-mentioned shell and tube exchanger is generally also divided into two kinds of dry type and full-liquid type.Exchanged heat for the shell-tube type of full-liquid type
Device, what is be passed through in its first passage is water, and what is be passed through in second channel is cooling agent.Used in the shell and tube exchanger of full-liquid type
After complete, the top cavity volume of dividing plate and bobbin carriage, tube sheet composition often has part water row and not come out, and corruption is caused to shell and tube exchanger
Erosion.The part water is primarily present in the cavity volume of top less than the space of tube bank.
Correspondingly, this area needs a kind of new shell and tube exchanger to solve the above problems.
The content of the invention
It has been the existing shell and tube exchanger internal partition of solution and pipe to solve above mentioned problem of the prior art
The problem of ponding in the cavity volume of top that case, tube sheet are formed causes corrosion to shell and tube exchanger, the invention provides one kind to change
The pumping equipment of hot device, the heat exchanger include dividing plate, and at least a portion of the heat exchanger is divided into upper cavity volume by the dividing plate
With lower cavity volume, the upper cavity volume and the lower cavity volume are in communication with the outside；The pumping equipment includes communicating passage and suspension machine
Structure, the communicating passage are arranged on the dividing plate, for connecting the upper cavity volume and the lower cavity volume；The suspension mechanism position
It is connected in the lower cavity volume and with the shell of the dividing plate or the heat exchanger；The suspension mechanism is arranged to under described
Hold the increase of intracavity liquid and float and offseted with the lower end of the communicating passage, so as to which the communicating passage be blocked.
In the optimal technical scheme of above-mentioned pumping equipment, the pumping equipment also includes being arranged on the dividing plate or described
Connecting rod on shell, the connecting rod are slidably connected along its axis direction and the suspension mechanism, and the connecting rod edge
Its axis direction and the lower end aligned of the communicating passage.
In the optimal technical scheme of above-mentioned pumping equipment, the suspension mechanism is suspension ball.
In the optimal technical scheme of above-mentioned pumping equipment, the dividing plate is provided with circle at the lower end of the communicating passage
Connected in star, the circular groove match with the end shape of the suspension ball.
In the optimal technical scheme of above-mentioned pumping equipment, the pumping equipment includes a plurality of communicating passage, and
The suspension mechanism can block all communicating passages.
In addition, present invention also offers a kind of heat exchanger, the heat exchanger includes the optimization technique side of above-mentioned pumping equipment
Pumping equipment any one of case.
In the optimal technical scheme of above-mentioned heat exchanger, the heat exchanger is shell and tube exchanger.
In the optimal technical scheme of above-mentioned heat exchanger, each pipeline in the tube bank of the case tube heat exchanger is all V
The upper cavity volume is led in shape pipe, one end of the V-arrangement pipe, and the other end of the V-arrangement pipe leads to the lower cavity volume.
In the optimal technical scheme of above-mentioned heat exchanger, the both ends of the case tube heat exchanger are both provided with the discharge opeing dress
Put.
In the optimal technical scheme of above-mentioned heat exchanger, the dividing plate is nonplanar structure, the upper end of the communicating passage
At the minimum point of the dividing plate.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, by being set on dividing plate
Communicating passage, the upper cavity volume of heat exchanger one end is connected with lower cavity volume so that heat exchanger when not in use, the solution in upper cavity volume
Lower cavity volume can be flowed into by communicating passage, then be discharged again by leakage fluid dram connect with lower cavity volume, avoid cavity volume with
The liquid heat exchanging device of accumulation causes to corrode in lower cavity volume.
Further, the break-make of communicating passage is controlled by being arranged on the suspension ball in lower cavity volume, to make communicating passage
Separated when heat exchanger works, do not work and be turned in heat exchanger.Specifically, instantly in cavity volume during injection water, suspension ball
Can gradually it float with the rising of water level, until the lower end of communicating passage is blocked.Now, communicating passage is blocked.Instantly hold
When the water of intracavitary is drained, suspension ball falls after rise to original position, communicating passage under gravity to be opened, in upper cavity volume
Water lower cavity volume can be entered by communicating passage.
Brief description of the drawings
With reference to the accompanying drawings and shell and tube exchanger is combined to describe the preferred embodiment of the present invention, in accompanying drawing：
Fig. 1 is the structural representation that Fig. 1 of the present invention is shell and tube exchanger of the invention；
Fig. 2 is the sectional view in A-A directions in Fig. 1；
Fig. 3 is the enlarged drawing in B portions in Fig. 2；
Fig. 4 is the C direction views in Fig. 3；
Fig. 5 is the preferred structure figure that dividing plate is set in bobbin carriage.
Reference numerals list：
1st, housing；2nd, tube sheet；3rd, restrain；4th, deflection plate；5th, bobbin carriage；51st, the first liquid in-out mouth；52nd, the second liquid in-out mouth；
6th, the first feed tube；7th, the first drain pipe；8th, the second feed tube；9th, the second drain pipe；10th, dividing plate；101st, communicating passage；11、
Discharging valve；12nd, suspension ball；13rd, connecting rod.
Embodiment
It will be apparent to a skilled person that this section embodiment is used only for explaining the technical principle of the present invention,
It is not intended to limit protection scope of the present invention.For example, although the pumping equipment of the present invention is the shell-tube type heat exchange with full-liquid type
What device illustrated, but the pumping equipment of the present invention can also be applied to other any feasible heat exchangers, such as floating head type
Heat exchanger, fixed tube-sheet exchanger, U-tube sheet heat exchanger, plate type heat exchanger etc., those skilled in the art can be as needed
It is made adjustment, to adapt to specific application scenario, the technical scheme after adjustment will fall into protection scope of the present invention.
It should be noted that in the description of the invention, term " " center ", " on ", " under ", "left", "right", " vertical ",
The term of the direction indication such as " level ", " interior ", " outer " or position relationship is to be based on direction shown in the drawings or position relationship, and this is only
Description is for only for ease of, rather than instruction or hint described device or element there must be specific orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " are only used for
Purpose is described, and it is not intended that instruction or hint relative importance.
In addition it is also necessary to explanation, in the description of the invention, unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
As depicted in figs. 1 and 2, shell and tube exchanger of the invention mainly include housing 1, tube sheet 2, tube bank 3, deflection plate 4,
Bobbin carriage 5, the first feed tube 6, the first drain pipe 7, the second feed tube 8, the second drain pipe 9 and dividing plate 10.Wherein, the two of housing 1
End is respectively arranged with a tube sheet 2, and tube bank 3 is arranged in housing 1 and both ends are each passed through tube sheet 2.Each tube sheet 2 is remote
The side of housing 1 is all installed with a bobbin carriage 5, make to respectively constitute between two tube sheets 2 and two bobbin carriages 5 one it is closed
Cavity volume.Wherein, housing 1 and two bobbin carriages 5 collectively form the shell of shell and tube exchanger.
As shown in figure 1, a level is provided with the cavity volume of shell and tube exchanger left end or is similar to horizontal dividing plate 10.
The cavity volume has been divided into upper cavity volume (not indicated in figure) and lower cavity volume (not indicated in figure) by dividing plate 10.Wherein, the cavity wall of lower cavity volume
On be provided with the first inlet 51, it is in communication with the outside by the first feed tube 6.The second feed liquor is provided with the cavity wall of upper cavity volume
Mouth 52, it is in communication with the outside by the first drain pipe 7.In addition, those skilled in the art can also be according to being actually needed, by dividing plate
10 are obliquely or vertically set.
With continued reference to Fig. 1 and Fig. 2.A part in tube bank 3 connects upper cavity volume with the cavity volume of shell and tube exchanger right-hand member,
Another part in tube bank 3 connects lower cavity volume with the cavity volume of shell and tube exchanger right-hand member.So that the first feed tube 6, lower cavity volume,
Tube bank 3, the cavity volume of shell and tube exchanger right-hand member, upper cavity volume and the first drain pipe 7 form first passage.The first passage is used to lead to
First liquid, in a preferred embodiment of the invention, the first liquid are water.Or those skilled in the art can also be according to need
Will, use other fluid instead of water, such as hydraulic oil and water glycol.In addition, those skilled in the art can also be as needed,
Line replacement is entered to the order of the first feed tube 6 and the first drain pipe 7, the first drain pipe 7 is used as feed tube, makes the first feed tube
6 are used as drain pipe.
It will be appreciated to those of skill in the art that the purpose that the both ends of tube bank 3 pass through tube sheet 2 is by shell and tube exchanger
The cavity volume of the upper cavity volume of left end and lower cavity volume respectively with shell and tube exchanger right-hand member connects.So before it can realize the function
Put, tube sheet 2 can also need not be passed through by restraining 3 both ends, such as set on tube sheet 2 multiple with restraining 3 corresponding through holes, be made
Tube bank 3 both ends while being connected with tube sheet 2 respectively with the through-hole alignment.
With continued reference to Fig. 1, multiple deflection plates 4 passed through by tube bank 3 are provided with housing 1, deflection plate 4 is playing fixing pipe
Beam 3 also constitutes a roundabout passage while acting between housing 1.Further, the second feed liquor is additionally provided with housing 1
The drain pipe 9 of pipe 8 and second, the drain pipe 9 of the second feed tube 8 and second are respectively communicated with the both ends of above-mentioned circuitous channel so that the
Two feed tubes 8, the second drain pipe 9 and the circuitous channel collectively form second channel.The second channel is used to lead to second liquid,
In the preferred embodiments of the present invention, second liquid is cooling agent (such as freon).Or those skilled in the art can be with root
According to needs, cooling agent, such as hydraulic oil, water glycol, water etc. are substituted using other liquid.In addition, those skilled in the art are also
Can be as needed, line replacement is entered to the order of the second feed tube 8 and the second drain pipe 9, the second drain pipe 9 is used as feed liquor
Pipe, makes the second feed tube 8 be used as drain pipe.
As shown in Figures 2 to 4, pumping equipment of the invention mainly includes communicating passage 101, suspension ball 12 and connecting rod
13.Wherein, thickness direction of the communicating passage 101 along dividing plate 10 is arranged on dividing plate 10, and the upper end of connecting rod 13 and dividing plate 10 are solid
Fixed connection, the connection can be any feasible connection, for example, threaded connection, welding, bolt connection etc..Also, connecting rod 13
Preferably with the vertical connection of dividing plate 10.Suspension ball 12 is slideably connected with connecting rod 13.
Instantly in cavity volume during injection water, suspension ball 12 can gradually float with the axis direction of the rising edge connecting rod 13 of water level
Rise, until the lower end of communicating passage 101 is blocked.Now, communicating passage 101 is blocked.Instantly when the water in cavity volume is drained,
Suspension ball 12 falls after rise to original position, communicating passage 101 under gravity to be opened, and the water in upper cavity volume can pass through
Communicating passage 101 enters lower cavity volume.
It will be appreciated to those of skill in the art that when shell and tube exchanger needs normal work, make communicating passage 101
Block, prevent first passage to be short-circuited.When shell and tube exchanger, which does not work, not to work for a long time especially, make communicating passage
101 open, so that the water in cavity volume on shell and tube exchanger left end can flow into lower cavity volume, Ran Houzai by communicating passage 101
Discharged by the discharging valve 15 connected with lower cavity volume.It effectively prevent shell and tube exchanger when not in use, upper cavity volume is with
Water in cavity volume causes to corrode to shell and tube exchanger.
Those skilled in the art are also understood that, can be realized in suspension ball 12 and communicating passage 101 is blocked and beaten
Under the early stage for the function of opening, connecting rod 13 can also be connected on tube sheet 2 or bobbin carriage 5.In addition those skilled in the art may be used also
With as needed, one end of connecting rod 13 is fixedly connected with suspension ball 12, make the other end and tube sheet 2, bobbin carriage 5 of connecting rod 13
Or dividing plate 10 is pivotally connected, and communicating passage 101 is set to be located at the rotating path that suspension ball 12 rotates around the hub switch side of connecting rod 13
On, communicating passage 101 can be blocked when so as to suspension ball 12, water level rises in lower cavity volume.
As shown in Figure 3 and Figure 4, in a preferred embodiment of the invention, a plurality of adjacent connection is provided with dividing plate 10
Passage 101, the lower end of a plurality of communicating passage 101 are provided with circular groove (not indicated in figure).And a plurality of communicating passage
101 projection in the horizontal direction is all located in the circular groove, and a plurality of company is can be realized as will pass through a suspension ball 12
The purpose that circulation passage 101 is all blocked.Said structure is also reduced between cavity volume in increase and lower cavity volume while negotiability
The setting of suspension ball 12.
Further, those skilled in the art can also be as needed, and the lower end of shown circular groove sets elasticity in figure 3
Sealing ring, will pass through contact of the suspension ball 12 with elastic seal ring, it can effectively separate a plurality of communicating passage 101.
It will be appreciated to those of skill in the art that on the premise of a plurality of communicating passage 101 is blocked and opened by realization,
Suspension ball 12 can be substituted by any feasible suspension mechanism, such as rectangle suspension block, floating ball one-way valve, suspended piston etc..
It is as shown in Figure 5, in each above-mentioned embodiment of the present invention, horizontally disposed dividing plate 10 be configured to as
Lower structure：Height on vertical direction gradually reduces along edge to communicating passage 101.Or those skilled in the art can be with
As needed, dividing plate 10 is arranged to the nonplanar structure of other forms, and the upper end of communicating passage 101 is located at dividing plate 10
At minimum point.So that water all in upper cavity volume can flow into lower cavity volume from communicating passage 101, prevent occurring water in cavity volume
The phenomenon of accumulation.
In summary, the water in Fig. 1 on shell and tube exchanger left end in cavity volume can be made by the pumping equipment of the present invention
Lower cavity volume is flowed into time when not in use in shell and tube exchanger, and then from the discharging valve 11 connected with lower cavity volume, flow direction is outer in time again
Boundary.Therefore, pumping equipment of the invention can prevent shell and tube exchanger when not in use, the water pair in upper cavity volume and lower cavity volume
Shell and tube exchanger causes to corrode.
In addition, those skilled in the art can also be as needed, each pipeline restrained in 3 is arranged to V-arrangement pipe,
One end of each V-arrangement pipe is set to be connected with upper cavity volume, the other end connects with lower cavity volume.Or those skilled in the art can be with
As needed, a pumping equipment is set respectively at the both ends of shell and tube exchanger.
So far, combined preferred embodiment shown in the drawings describes technical scheme, still, this area
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these embodiments.Without departing from this
On the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to correlation technique feature, these
Technical scheme after changing or replacing it is fallen within protection scope of the present invention.
Claims (10)
1. a kind of pumping equipment of heat exchanger, the heat exchanger includes dividing plate, and the dividing plate is by least one of the heat exchanger
Cavity volume and lower cavity volume are separated into, the upper cavity volume and the lower cavity volume are in communication with the outside；
Characterized in that, the pumping equipment includes communicating passage and suspension mechanism,
The communicating passage is arranged on the dividing plate, for connecting the upper cavity volume and the lower cavity volume；
The suspension mechanism is located at the lower cavity volume and is connected with the shell of the dividing plate or the heat exchanger；
The suspension mechanism be arranged to it is described it is lower hold intracavity liquid increase and float and with the lower end of the communicating passage
Offset, so as to which the communicating passage be blocked.
2. the pumping equipment of heat exchanger according to claim 1, it is characterised in that the pumping equipment also includes being arranged on
Connecting rod on the dividing plate or the shell, the connecting rod are slidably connected along its axis direction and the suspension mechanism, and
And lower end aligned of the connecting rod along its axis direction and the communicating passage.
3. the pumping equipment of heat exchanger according to claim 2, it is characterised in that the suspension mechanism is suspension ball.
4. the pumping equipment of heat exchanger according to claim 3, it is characterised in that the dividing plate is in the communicating passage
Circular groove is provided with lower end, the circular groove matches with the end shape of the suspension ball.
5. the pumping equipment of heat exchanger according to any one of claim 1 to 4, it is characterised in that the pumping equipment
Including a plurality of communicating passage, and the suspension mechanism is arranged to block all communicating passages.
6. a kind of heat exchanger, it is characterised in that the heat exchanger includes the pumping equipment any one of claim 1 to 5.
7. heat exchanger according to claim 6, it is characterised in that the heat exchanger is shell and tube exchanger.
8. heat exchanger according to claim 7, it is characterised in that each pipeline in the tube bank of the case tube heat exchanger
All it is V-arrangement pipe, the upper cavity volume is led in one end of the V-arrangement pipe, and the other end of the V-arrangement pipe leads to the lower cavity volume.
9. heat exchanger according to claim 7, it is characterised in that the both ends of the case tube heat exchanger are both provided with the row
Liquid device.
10. heat exchanger according to claim 8 or claim 9, it is characterised in that the dividing plate is nonplanar structure, the connection
The upper end of passage is located at the minimum point of the dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711183926.9A CN107764126B (en) | 2017-11-23 | 2017-11-23 | Heat exchanger and drainage device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711183926.9A CN107764126B (en) | 2017-11-23 | 2017-11-23 | Heat exchanger and drainage device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107764126A true CN107764126A (en) | 2018-03-06 |
| CN107764126B CN107764126B (en) | 2022-12-27 |
Family
ID=61275301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711183926.9A Active CN107764126B (en) | 2017-11-23 | 2017-11-23 | Heat exchanger and drainage device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107764126B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2023993A1 (en) * | 1968-11-23 | 1970-08-21 | Viessmann Hans | |
| CN104896965A (en) * | 2015-06-01 | 2015-09-09 | 天津商业大学 | Tube-shell type experimental heat exchanger with intermediate liquid drainage function |
| US20160282066A1 (en) * | 2013-03-18 | 2016-09-29 | Sumitomo Precision Products Co., Ltd. | Heat exchanger |
| CN106595330A (en) * | 2016-08-29 | 2017-04-26 | 广东工业大学 | Novel pipe housing type automatic liquid separating condenser |
| CN207585424U (en) * | 2017-11-23 | 2018-07-06 | 青岛海尔空调电子有限公司 | Heat exchanger and its pumping equipment |
-
2017
- 2017-11-23 CN CN201711183926.9A patent/CN107764126B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2023993A1 (en) * | 1968-11-23 | 1970-08-21 | Viessmann Hans | |
| US20160282066A1 (en) * | 2013-03-18 | 2016-09-29 | Sumitomo Precision Products Co., Ltd. | Heat exchanger |
| CN104896965A (en) * | 2015-06-01 | 2015-09-09 | 天津商业大学 | Tube-shell type experimental heat exchanger with intermediate liquid drainage function |
| CN106595330A (en) * | 2016-08-29 | 2017-04-26 | 广东工业大学 | Novel pipe housing type automatic liquid separating condenser |
| CN207585424U (en) * | 2017-11-23 | 2018-07-06 | 青岛海尔空调电子有限公司 | Heat exchanger and its pumping equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107764126B (en) | 2022-12-27 |
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Effective date of registration: 20221027 Address after: 266500 Haier Development Zone Industrial Park, Qingdao Economic and Technological Development Zone, Shandong Province Applicant after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. |
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