CN209655616U - A kind of air source water heater group - Google Patents
A kind of air source water heater group Download PDFInfo
- Publication number
- CN209655616U CN209655616U CN201920270829.1U CN201920270829U CN209655616U CN 209655616 U CN209655616 U CN 209655616U CN 201920270829 U CN201920270829 U CN 201920270829U CN 209655616 U CN209655616 U CN 209655616U
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- Prior art keywords
- valve
- heat exchanger
- entrance
- air source
- water heater
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Other Air-Conditioning Systems (AREA)
Abstract
The utility model relates to technical field of water heaters more particularly to a kind of air source water heater groups.The air source water heater group includes sequentially connected motor compressor, insulated water tank heat exchanger, finned heat exchanger, further include: four-way reversing valve and cold tank heat exchanger, the outlet of the media port A and motor compressor of four-way reversing valve fluidly connect, media port C and the outlet of cold tank heat exchanger fluidly connect, entrance of the media port B with media port D respectively with insulated water tank heat exchanger and finned heat exchanger fluidly connects, and is connect respectively with the entrance of motor compressor by valve fluid；Threeway flow path, first entrance and the outlet of insulated water tank heat exchanger fluidly connect, and the outlet of second entrance and finned heat exchanger fluidly connects, and export and fluidly connect with the entrance of cold tank heat exchanger.The cooling capacity that above setting generates after making refrigerant cool down is fully used, and while guaranteeing domestic hot-water's dosage, greatly improves the practicability and economy of air source water heater group.
Description
Technical field
The utility model relates to technical field of water heaters more particularly to a kind of air source water heater groups.
Background technique
Air source hot pump water heater is by absorbing the low-temperature heat quantity in air come hot water preparing, since it has environmental protection, section
It the advantages that energy, is also more and more widely used in daily life.
However in the prior art, refrigerant flows through after the heat exchanger in air source hot pump water heater heats cold water, cold
Matchmaker itself temperature decline can generate a part of cooling capacity, the refrigerant after cooling generally can at finned heat exchanger evaporation endothermic, will
Cooling capacity is directly released into external environment in the form of cold wind, and the part cooling capacity is caused to be wasted in vain, is not obtained sufficiently
Utilization；When defrosting, refrigerant heat release at finned heat exchanger, the cooling capacity that refrigerant generates after cooling does not obtain sufficient benefit yet
With.
It is, therefore, desirable to provide a kind of air source water heater group, is able to solve and is unable to fully be produced using refrigerant in the prior art
The problem of raw cooling capacity.
Utility model content
Based on the above, the purpose of this utility model is to provide a kind of air source water heater groups, can make full use of
The cooling capacity generated after refrigerant hot water preparing and after defrosting, to greatly promote the practicability and economy of air source water heater group
Property.
In order to achieve the above object, the utility model uses following technical scheme:
A kind of air source water heater group is provided, including sequentially connected motor compressor, insulated water tank heat exchanger, fin change
Hot device, further includes:
Four-way reversing valve and cold tank heat exchanger, the four-way reversing valve include media port A, media port B, media port C and
Media port D, the outlet of the media port A and the motor compressor fluidly connect, and the media port C and the cold tank exchange heat
The outlet of device fluidly connects, and the media port B and media port D is changed with the insulated water tank heat exchanger and the fin respectively
The entrance of hot device fluidly connects, and is connect respectively with the entrance of the motor compressor by valve fluid；
Threeway flow path, the threeway flow path include first entrance, second entrance and outlet, the first entrance and the guarantor
The outlet of reservoir heat exchanger fluidly connects, and the second entrance and the outlet of the finned heat exchanger fluidly connect, it is described go out
The entrance of mouth and the cold tank heat exchanger fluidly connects.
As a kind of preferred embodiment of air source water heater group, the media port B and media port D of the four-way reversing valve are logical
The entrance that reflux branch is fluidly connected to the motor compressor, the media port B and media port D are crossed to the motor compressor
Reflux branch road be respectively arranged with first switch valve and second switch valve.
As a kind of preferred embodiment of air source water heater group, between the first entrance and the insulated water tank heat exchanger
Be provided with check valve, be provided with third switch valve between the second entrance and the finned heat exchanger, the second entrance with
It is provided with the 4th switch valve between the outlet, the 5th switch valve is provided between the first entrance and the outlet.
As a kind of preferred embodiment of air source water heater group, it is provided between the first entrance and the second entrance
Orifice union.
As a kind of preferred embodiment of air source water heater group, the orifice union includes throttle valve and filter, described
Throttle valve is connected with the filter.
As a kind of preferred embodiment of air source water heater group, the throttle valve is electric expansion valve, the throttle valve
Outlet end and input end are respectively arranged with a filter.
As a kind of preferred embodiment of air source water heater group, the outlet end of the motor compressor and four-way commutation
It is provided with the first needle-valve between valve, is provided with the second needle between the input end of the motor compressor and the second switch valve
Valve.
As a kind of preferred embodiment of air source water heater group, the first switch valve, the second switch valve, described
Three switch valves, the 4th switch valve and the 5th switch valve are solenoid valve.
As a kind of preferred embodiment of air source water heater group, the air source water heater group further includes controller, described
Controller controls the four-way reversing valve, the check valve, the first switch valve, the second switch valve, the third and opens
Close valve, the 4th switch valve and the 5th switch valve.
The utility model has the following beneficial effects:
Air source water heater group provided by the utility model increases cold tank heat exchange on the basis of former operating loop
Device, while under the action of four-way reversing valve and threeway flow path, refrigerant heat release can complete cold water at insulated water tank heat exchanger
Heating, the evaporation endothermic when refrigerant after cooling flows through cold tank heat exchanger can also pass through to realize to the refrigeration of cold tank
The refrigeration to cold tank is realized subsequently into cold tank heat exchanger evaporation endothermic with air heat exchange at finned heat exchanger.With
On setting, take full advantage of the cooling capacity generated after the cooling capacity and defrosting generated after refrigerant hot water preparing, guarantee domestic hot-water
While dosage, the practicability and economy of air source water heater group are greatly promoted.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the air source water heater group that the utility model specific embodiment provides；
Fig. 2 is the operation principle schematic diagram for the air source water heater group that the utility model specific embodiment provides；
Fig. 3 is another operation principle schematic diagram for the air source water heater group that the utility model specific embodiment provides.
In figure:
1, motor compressor；2, four-way reversing valve；3, insulated water tank heat exchanger；4, check valve；5, throttle valve；6, it the 4th opens
Close valve；7, cold tank heat exchanger；8, second switch valve；9, finned heat exchanger；10, third switch valve；11, the 5th switch valve；12,
First switch valve；13, filter；14, the first needle-valve；15, the second needle-valve.
Specific embodiment
The embodiments of the present invention are described below in detail, the example of embodiment is shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the utility model, and should not be understood as the limit to the utility model
System.
Further illustrate the technical solution of the utility model with reference to the accompanying drawing and by specific embodiment.
The present embodiment provides a kind of air source water heater groups, as shown in Figure 1, the air source water heater group includes being sequentially connected
Motor compressor 1, four-way reversing valve 2, insulated water tank heat exchanger 3, threeway flow path, cold tank heat exchanger 7 and fin heat exchange
Device 9.Wherein, the outlet of motor compressor 1 and the media port A of four-way reversing valve 2 are fluidly connected, and four-way changes the media port of valve valve 2
B, media port C and media port D is fluidly connected with insulated water tank heat exchanger 3, cold tank heat exchanger 7 and finned heat exchanger 9 respectively.
And B mouthfuls of medium and media port D pass through the entrance that reflux branch is fluidly coupled to motor compressor 1.B mouthfuls of medium and media port D
First switch valve 12 and second switch valve 8 are respectively arranged with to the reflux branch road of motor compressor 1.Insulated water tank heat exchanger 3,
It is fluidly connected between cold tank heat exchanger 7 and finned heat exchanger 9 by threeway flow path.The threeway flow path makes cold tank exchange heat
Device 7 is only fluidly connected with insulated water tank heat exchanger 3, or is only fluidly connected with finned heat exchanger 9.As a result, in four-way reversing valve
2, under the action of threeway flow path and reflux branch, refrigerant can be from motor compressor 1 followed by insulated water tank heat exchanger 3, cold
Tank heat exchanger 7, reflux branch after, flow back to motor compressor 1 formed utilizing waste heat for refrigeration circuit, can also from motor compressor 1 according to
It is secondary flow through finned heat exchanger 9, cold tank heat exchanger 7, reflux branch after, flow back to motor compressor 1 and form single refrigerating circuit.
Specifically, which includes first entrance, second entrance and outlet.The first entrance and insulated water tank exchange heat
Device 3 connects, and check valve 4 is provided between it, so that refrigerant is only capable of flowing to three-way flow from 3 one direction of insulated water tank heat exchanger
Road.The second entrance is fluidly connected with finned heat exchanger 9, and third switch valve 10 is provided between it.Second entrance and outlet
Between be provided with the 4th switch valve 6, be provided with the 5th switch valve 11, first entrance and second entrance between first entrance and outlet
Between be provided with orifice union.Under utilizing waste heat for refrigeration mode, third switch valve 10, the 5th switch valve 11 are closed, the 4th switch valve 6
It opens, the refrigerant flowed by first entrance successively flows into cold tank heat exchanger from outlet after orifice union, the 4th switch valve 6
7.Under single refrigeration mode, third switch valve 10, the 5th switch valve 11 are opened, and the 4th switch valve 6 is closed, and are flowed by second entrance
Refrigerant successively flow into cold tank heat exchanger 7 from outlet after orifice union, the 5th switch valve 11.
Further, when the media port A of four-way reversing valve 2 is connected to media port B, refrigerant passes through in heating and thermal insulation water tank
Cold water cool down, so that the evaporation endothermic at cold tank heat exchanger 7, realizes the refrigeration of cold tank；When media port A and medium
When mouth D connection, refrigerant is cooled down by finned heat exchanger 9 and air heat exchange, is inhaled to evaporate at cold tank heat exchanger 7
Heat realizes the refrigeration of cold tank.
In order to guarantee the refrigeration effect in cold tank, the heat exchanger tube of above-mentioned cold tank heat exchanger 7 is set as U-shaped, and respectively
It is set in the insulating layer in cold three faces of tank.In the present embodiment, cold tank body is divided into cold tank liner, insulating layer and shell
Body is provided with the groove to match with heat exchange tube shape and circuit on cold tank liner, and heat exchanger coils can be easily
It is stuck in groove, is then laid with upper insulating layer, is finally outer housing, foaming agent is injected along groove, heat exchanger tube will be pasted firmly
It closes between cold tank liner and insulating layer.
Further, above-mentioned orifice union includes throttle valve 5 and filter 13, wherein and the quantity of filter 13 is two,
Two filters 13 are respectively arranged at the both ends of throttle valve 5, and the pressure of the adjustable refrigerant of throttle valve 5 in the loop makes high pressure
Refrigerant becomes low pressure refrigerant, filter 13 it is main it is used be to prevent refrigerant from blocking throttle valve 5, guarantee that refrigerant before decompression and drops
It can be filtered after pressure, be conducive to mobility of the refrigerant in entire Hot water units circuit.
Air source water heater group provided in this embodiment, is provided with the first needle between motor compressor 1 and four-way reversing valve 2
Valve 14, the input end of motor compressor 1 are provided with the second needle-valve 15.In the present embodiment, in the first needle-valve 14 and the second needle-valve 15
Place can be set pressure gauge and carry out pressure condition of the periodic monitor air source water heater group at runtime in entire circuit, thus according to
The size of pressure value is added refrigerant into circuit or is recycled to refrigerant.
The operational mode of air source water heater group provided in this embodiment is broadly divided into utilizing waste heat for refrigeration mode and single refrigeration mould
Whether formula, the hot water temperature that the switching of both of which depends in insulated water tank reach preset value.When hot water temperature is not up to pre-
If when value, controller (being not shown) controls four-way reversing valve 2 and corresponding valve realizes the operation of utilizing waste heat for refrigeration mode；
After hot water temperature reaches preset value, controller controls four-way reversing valve 2 and corresponding valve realizes the operation of single refrigeration mode.
Specifically, as shown in Fig. 2, refrigerant flows in the direction of the arrow when air source water heater group runs utilizing waste heat for refrigeration mode.
At this point, the media port A of controller control four-way reversing valve 2 is connected to media port B, media port C is connected to media port D, and the 4th opens
It closes valve 6 and second switch valve 8 is opened, third switch valve 10, the 5th switch valve 11 and first switch valve 12 are closed.Refrigerant from
After being flowed out in motor compressor 1, enters heat release in insulated water tank heat exchanger 3 by the first needle-valve 14 and four-way reversing valve 2, make to protect
Cold water temperature in incubator increases.Heat release cooling after refrigerant by check valve 4 enter orifice union in be filtered, throttle with
And refilter, the refrigerant after decrease temperature and pressure enters evaporation endothermic in cold tank heat exchanger 7 by the 4th switch valve 6, makes cold tank
Interior temperature reduction reaches refrigeration effect.Refrigerant after heat absorption enters media port D by the media port C of four-way reversing valve 2, finally
It is flowed back in motor compressor 1 by second switch valve 8 and the second needle-valve 15, the refrigerant after making full use of hot water preparing generates cold
Amount, completes the circulation in a utilizing waste heat for refrigeration circuit.
It should be noted that entire air source water heater group is when running utilizing waste heat for refrigeration mode, refrigerant is from motor compressor 1
Pressure is larger after outflow, therefore, under this kind of operational mode, the refrigerant in circuit can only be added by the second needle-valve 15 or
Recycling.
As shown in figure 3, refrigerant flows in the direction of the arrow when air source water heater group runs single refrigeration mode.At this point, control
The media port A of device control four-way reversing valve 2 is connected to media port D, and media port B is connected to media port C, third switch valve 10, the
Five switch valves 11 and first switch valve 12 are opened, and the 4th switch valve 6 and second switch valve 8 are closed.Refrigerant is from electric compressor
After being flowed out in machine 1, enters in finned heat exchanger 9 by the first needle-valve 14 and four-way reversing valve 2 and exchange heat, refrigerant own temperature drop
It is low, then enter in orifice union by third switch valve 10 and be filtered, throttle and refilter, due to setting for check valve 4
It sets, the refrigerant after decrease temperature and pressure can only enter evaporation endothermic in cold tank heat exchanger 7 by the 5th switch valve 11, make in cold tank
Temperature reduction reach refrigeration effect, the refrigerant after heat exchange enters media port B by the media port C of four-way reversing valve 2, most passes through afterwards
It crosses first switch valve 12 and second flow regulating valve 15 flows back in motor compressor 1, the cooling capacity generated using refrigerant after defrosting is complete
At the circulation of primary single refrigerating circuit.
It should be noted that entire unit runs single refrigeration mode after the hot water in insulated water tank reaches preset temperature,
Refrigerant pressure under such mode is smaller than the refrigerant pressure of heating mode, therefore both can be by the first needle-valve 14 in circuit
Refrigerant be added or recycle, the refrigerant in circuit can also be added or be recycled by the second needle-valve 15.
Furthermore the main operating mode of air source water heater group provided in this embodiment is always utilizing waste heat for refrigeration mode,
After the water temperature in insulated water tank reaches 60 DEG C, controller control four-way reversing valve 2 and respective switch valve, entire unit start to transport
Row list refrigeration mode, as long as however water temperature in insulated water tank is lower than 60 DEG C, system will start operation utilizing waste heat for refrigeration mode.
In addition, the cold tank after refrigeration can be used to store some articles or food needed to be placed in low temperature environment,
Cold tank in the present embodiment is mainly used to carry out food and gourd, fruit and vegetable fresh-keeping, when not needing freezing, can take completely
In generation, has the refrigerator of fresh-keeping function, saves electric energy.
Air source water heater group provided in this embodiment is also commutated by four-way while increasing cold tank heat exchanger 7
Valve 2 and multiple valves change the flow direction of refrigerant.Specifically, originally entire Hot water units are in hot water preparing, refrigerant
Finned heat exchanger 9 directly can be entered by orifice union after cooling, it is at finned heat exchanger 9 that cooling capacity is direct in the form of cold wind
It is discharged into the external environment.In the present embodiment, cold tank heat exchanger 7 is arranged in parallel with finned heat exchanger 9, by controller and
The regulation of respective switch valve changes refrigerant optionally through flowing into cold tank after insulated water tank heat exchanger 3 or finned heat exchanger 9
In hot device 7, freezes so that the cooling capacity that refrigerant generates is discharged into and realized in cold tank, finally flow back to motor compressor 1.Therefore,
In hot water preparing, controller controls the opening and closing of four-way reversing valve 2 and each valve, so that refrigerant first passes through insulated water tank heat exchange
Then device 3 flows into cold tank heat exchanger 7, finally flows back to motor compressor 1, generation when taking full advantage of refrigerant hot water preparing
Cooling capacity.In not hot water preparing, controller controls the opening and closing of four-way reversing valve 2 commutation and each valve, and refrigerant first flows into wing
It exchanges heat in piece heat exchanger 9, again flows into cold tank heat exchanger 7 and freeze to cold tank, finally flow back to motor compressor 1.
In the present embodiment, above-mentioned all switch valves are solenoid valve；Above-mentioned throttle valve 5 is electric expansion valve, however
In other embodiments, heating power expansion valve can be set to.
Air source water heater group provided in this embodiment increases cold tank heat exchanger 7 on the basis of former operating loop,
Refrigerant, can be respectively in insulated water tank heat exchanger 3 and fin under the action of four-way reversing valve 2, threeway flow path and reflux branch
The evaporation endothermic at cold tank heat exchanger 7 again after cooling down at heat exchanger 9 can either make full use of and generate after refrigerant hot water preparing
Cooling capacity realizes the refrigeration of cold tank, and can be cooled down by air heat exchange to refrigerant using finned heat exchanger 9, in turn
It realizes the refrigeration of cold tank, can make full use of the cooling capacity of refrigerant generation；The U being laid in the insulating layer in cold three faces of tank
Type heat exchanger tube enhances the mobility of refrigerant, increases flow area of the refrigerant in cold tank heat exchanger 7, sets compared to exposed
Set the heat exchanger tube of the metal plate side in refrigerator, in the present embodiment, refrigerant evaporation endothermic at cold tank heat exchanger 7, generation
Cooling capacity is distributed out of cold tank three orientations, is conducive to evenly distributing for box house cooling capacity, insulating layer is not easy cooling capacity
It dissipates, advantageously ensures that the refrigeration effect inside cold tank.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (9)
1. a kind of air source water heater group, including sequentially connected motor compressor (1), insulated water tank heat exchanger (3), fin change
Hot device (9), which is characterized in that further include:
Four-way reversing valve (2) and cold tank heat exchanger (7), the four-way reversing valve (2) include media port A, media port B, medium
Mouthful C and media port D, the outlet of the media port A and the motor compressor (1) fluidly connect, the media port C with it is described cold
The outlet of tank heat exchanger (7) fluidly connects, the media port B and the media port D respectively with the insulated water tank heat exchanger
(3) it is fluidly connected with the entrance of the finned heat exchanger (9), and the entrance with the motor compressor (1) passes through valve respectively
Door fluidly connects；
Threeway flow path, the threeway flow path include first entrance, second entrance and outlet, the first entrance and the heat preservation water
The outlet of case heat exchanger (3) fluidly connects, and the second entrance and the outlet of the finned heat exchanger (9) fluidly connect, described
It exports and is fluidly connected with the entrance of the cold tank heat exchanger (7).
2. air source water heater group according to claim 1, which is characterized in that the media port B of the four-way reversing valve (2)
Pass through the entrance that reflux branch is fluidly connected to the motor compressor (1), the media port B and media port D with media port D
First switch valve (12) and second switch valve (8) are respectively arranged with to the reflux branch road of the motor compressor (1).
3. air source water heater group according to claim 2, which is characterized in that the first entrance and the insulated water tank
It is provided between heat exchanger (3) check valve (4), is provided with third between the second entrance and the finned heat exchanger (9) and opens
It closes valve (10), the 4th switch valve (6), the first entrance and the outlet is provided between the second entrance and the outlet
Between be provided with the 5th switch valve (11).
4. air source water heater group according to claim 3, which is characterized in that the first entrance and the second entrance
Between be provided with orifice union.
5. air source water heater group according to claim 4, which is characterized in that the orifice union includes throttle valve (5)
With filter (13), the throttle valve (5) and the filter (13) connection.
6. air source water heater group according to claim 5, which is characterized in that the throttle valve (5) is electric expansion valve,
The outlet end of the throttle valve (5) and input end are respectively arranged with a filter (13).
7. air source water heater group according to claim 2, which is characterized in that the outlet end of the motor compressor (1)
It is provided with the first needle-valve (14) between the four-way reversing valve (2), the input end and described second of the motor compressor (1)
The second needle-valve (15) are provided between switch valve (8).
8. air source water heater group according to claim 3, which is characterized in that the first switch valve (12), described
Two switch valves (8), the third switch valve (10), the 4th switch valve (6) and the 5th switch valve (11) are electricity
Magnet valve.
9. air source water heater group according to claim 3, which is characterized in that the air source water heater group further includes control
Device processed, the controller control the four-way reversing valve (2), the check valve (4), the first switch valve (12), described the
Two switch valves (8), the third switch valve (10), the 4th switch valve (6) and the 5th switch valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920270829.1U CN209655616U (en) | 2019-03-04 | 2019-03-04 | A kind of air source water heater group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920270829.1U CN209655616U (en) | 2019-03-04 | 2019-03-04 | A kind of air source water heater group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209655616U true CN209655616U (en) | 2019-11-19 |
Family
ID=68525795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920270829.1U Expired - Fee Related CN209655616U (en) | 2019-03-04 | 2019-03-04 | A kind of air source water heater group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209655616U (en) |
-
2019
- 2019-03-04 CN CN201920270829.1U patent/CN209655616U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |