CN201488120U - Solar water heater pipeline connecting and controlling system - Google Patents
Solar water heater pipeline connecting and controlling system Download PDFInfo
- Publication number
- CN201488120U CN201488120U CN2009201766065U CN200920176606U CN201488120U CN 201488120 U CN201488120 U CN 201488120U CN 2009201766065 U CN2009201766065 U CN 2009201766065U CN 200920176606 U CN200920176606 U CN 200920176606U CN 201488120 U CN201488120 U CN 201488120U
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to a solar water heater pipeline connecting and controlling system which comprises a water pipeline (3) and a water tank (18) connected with a solar energy heat collecting pipe, wherein the water tank (18) is provided with an electrical heating device (15), a water level sensor (16) and a temperature sensor (17) which are respectively connected with a circuit controller (14). The system is characterized in that the water pipeline (3) is a water taking end electromagnetic valve (5) connected with a water taking end; a water outlet end of the water taking end electromagnetic valve (5) is divided into two paths by a tee pipe, wherein one path is communicated with the water tank (18) through a water tank water outlet end electromagnetic valve (2), and the other path is communicated with the water tank (18) through a water pump (6) and then a water tank water inlet end electromagnetic valve (11); and water consumption devices (9 and 10) are connected between the water pump (6) and the water tank water inlet end electromagnetic valve (11). The design has multiple functions such as pressurizing water feed, hot water pressurization, pipeline circulation freezing resistance and cracking resistance, and the like.
Description
One, technical field
The utility model relates to a kind of pipelines of solar water heater and connects and control system.
Two, background technology
Along with people's living standard improves constantly enhancing with environmental consciousness, solar water heater is progressively come in more common people families.But, solar water heater locates because generally disperseing to be installed on the little resident roof of drop etc., often need to take the freeze proof anticracking insulation of water in the supercharging, hot water supercharging water outlet and pipeline measure, and the prior solar water heater pipeline connects and control system all can't satisfy real needs such as water in the supercharging, hot water supercharging and the freeze proof anticracking of pipeline simultaneously, thereby prior solar water heater is difficult to promote the use of in the very big numerous peasants and herdsmen area of annual day and night temperature.
A kind of pipelines of solar water heater connected system is disclosed for No. 200720110409.4 as Chinese patent, comprise solar water heater water tank, the solar water heater controller, tank sensor, water supply valve, water pump, the water management switch, the reverse water flow control valve, connect water pipe and user's interior conduit, water supply valve links to each other with the water inlet of water pump and the fluid stopping end of reverse water flow control valve respectively, the delivery port of water pump links to each other with water tank inlet, the delivery port of water tank links to each other with the water management switch, the outlet of water management switch is with after the import of user's interior conduit links to each other, the other end of user's interior conduit links to each other with the entry port of reverse water flow control valve, the solar water heater controller respectively with tank sensor, water supply valve, water pump, the water management switch links to each other.
Chinese patent discloses a kind of pipelines of solar water heater connected system for No. 200720110410.7 again, comprise solar water heater water tank, the solar water heater controller, tank sensor, water supply valve, water pump, the water management switch, the reverse water flow control valve, connect water pipe and user's interior conduit, water supply valve links to each other with the fluid stopping end of water tank inlet and reverse water flow control valve respectively, the delivery port of water tank links to each other with the water management switch, the outlet of water management switch links to each other with the water inlet of water pump, the delivery port of water pump is with after the import of user's interior conduit links to each other, the other end of user's interior conduit links to each other with the entry port of reverse water flow control valve, the solar water heater controller respectively with tank sensor, water supply valve, water pump, the water management switch links to each other.
But above-mentioned patent does not still solve the hot water supercharging goes out water problems.
Three, summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, designs a kind of pipelines of solar water heater with multiple functions such as water in the supercharging, hot water supercharging water outlet and the freeze proof anticracking insulations of pipeline and is connected and control system.
Basic ideas of the present utility model are:
1. the automatic loading water function realizes: when the water level of sensing water tank when water level sensor was lower than minimum setting value, circuit controller was exported two groups of voltage circuits simultaneously; The DC voltage loop of one group of 12V/1A is supply tank water side magnetic valve, water intaking end magnetic valve, the work of water tank water intake end magnetic valve simultaneously, make supply tank water side magnetic valve be in cut-off state, water intaking end magnetic valve, water tank water intake end magnetic valve are in opening state, one group of 220V voltage circuit supply-water pump work, water pipe line begins to go up water, and the water level of water tank is raise; When the water level of sensing water tank when the water level sensor of water tank reaches the peak level setting value, the voltage circuit of output disconnects simultaneously, water pump, supply tank water side magnetic valve, water intaking end magnetic valve, water tank water intake end magnetic valve quit work simultaneously, get back to holding state automatically.Instrument can also be provided with functions such as forcing to go up water: promptly as long as do not reaching under the situation of peak level, crawl forces to go up taps, last water function starts immediately, when reaching the peak level setting value, the voltage circuit of output disconnects simultaneously, water pump, magnetic valve quit work simultaneously, get back to holding state automatically.
2. automatically circulatory function realizes: the temperature gap that the temperature of sensing when the low temperature inductor and high temperature inductor are sensed is when setting value, and circuit controller is exported two groups of voltage circuits simultaneously; The DC voltage loop supply tank water inlet end magnetic valve work of one group of 12V/1A, the work of one group of 220V voltage circuit supply-water pump, current are through water tank → (water tank water side) hand stop valve → water tank water side magnetic valve → water pump → water tank water intake end magnetic valve → (water tank water intake end) hand stop valve → get back to water tank; The water temperature that low temperature inductor and temperature inductor are sensed is progressively balanced; The temperature gap that the temperature value of sensing when the low temperature inductor is sensed greater than setting value or with temperature inductor is during less than setting value, the voltage circuit of output disconnects simultaneously, water pump, water tank water side magnetic valve, water tank water intake end magnetic valve quit work simultaneously, get back to holding state automatically.Be the temperature value that adopts the low temperature inductor to sense in the practice, the temperature gap that still adopts temperature value that the low temperature inductor senses and temperature inductor to sense is the index of automatic circulatory function startup, can determine as the case may be.
3. hand supercharging function: for reducing cost, system can match the function of no pressure controller, when the needs supercharging, the hand supercharging switch of crawl circuit controller, circuit controller output 220V alternating current, supply-water pump work, current are through water tank → (water tank water side) hand stop valve → water tank water side magnetic valve → water pump → water device output water.When without supercharging, crawl hand supercharging switch powered-down, the voltage circuit of output disconnects, and water pump quits work, and gets back to holding state.
4. automatic function of increasing pressure: the pressure of sensing when pressure inductor is during less than setting value, circuit controller output 220V alternating current, supply-water pump work, current are through water tank → (water tank water side) hand stop valve → water tank water side magnetic valve → water pump → water device output water.When stopping water, water pump quits work, and gets back to holding state automatically.
The utility model specifically is achieved through the following technical solutions: a kind of pipelines of solar water heater connects and control system, comprise water pipe line, the water tank that is connected with solar energy heat collection pipe, the electric heater unit that connects with circuit controller respectively is housed in the water tank, water level sensor and temperature inductor, it is characterized in that water pipe line is: the water intaking end magnetic valve that is connected in the water intaking end, the water side of water intaking end magnetic valve is divided into two-way by a three-way pipe, lead up to joining water box behind the magnetic valve of water tank water side, another road by behind the water pump again by joining water box behind the water tank water intake end magnetic valve, and between water pump and water tank water intake end magnetic valve, be connected with the water device;
Wherein, the circuit of water pump, water intaking end magnetic valve, water tank water intake end magnetic valve and water tank water side magnetic valve connects with circuit controller respectively;
And the low temperature inductor is housed on water pipe line, and the low temperature inductor connects with circuit controller.The temperature value of sensing with the low temperature inductor, perhaps the temperature gap sensed of temperature value of sensing with the low temperature inductor and temperature inductor is the desired value that automatic circulatory function starts.
In the utility model, the water passage circulation system between solar energy heat collection pipe and the water tank generally is an independently system, and electric heater unit is necessary servicing unit, and this all is the mode that prior solar water heater generally adopts.As for circuit controller, existing control mode is varied, independent control each several part is arranged, also have partly integrated and whole integrated, by existing electronic technology development, general those of ordinary skill can not need creative work just can design corresponding circuit controller according to the function needs fully.The low temperature inductor should be arranged on the position that the water pipe line most probable freezes.Water pump can be realized the function of water in the supercharging, hot water supercharging water outlet and the freeze proof anticracking of pipeline water circulation respectively according to actual needs." connection " is meant the annexation between the water pipe line, and " connection " is meant the connecting relation between the circuit.
Further scheme is: on the water side of water tank and the water pipe line between the water device pressure inductor is housed, the circuit of pressure inductor connects with circuit controller.When the higher discharge pressure in solar water heater installation site can be satisfied the demand, also can not establish pressure inductor and related circuit, realize hot water supercharging water outlet with manually opened water pump in case of necessity.
Further scheme is: in the water tank water side hand stop valve is housed, the water tank water intake end is equipped with hand stop valve, and the water intaking end is equipped with hand stop valve.Main purpose is to need repairing, when improving, close hand stop valve at pipeline and pipeline components and parts, is convenient to maintain and replace.
Further scheme is: the water intaking end is equipped with unidirectional stop valve.It is unidirectional by current to be mainly used in groundwater abstraction, reduces emptying time.When the water source is artesian water, can not want unidirectional stop valve.
Further scheme is: water intaking end magnetic valve, water tank water intake end magnetic valve and water tank water side magnetic valve all are low-voltage solenoid valves, and water tank water side magnetic valve is normally open solenoid valve, and water intaking end magnetic valve and water tank water intake end magnetic valve are normally closed solenoid valves.Adopting low-voltage solenoid valve mainly is for security needs.
When meeting when not using solar water heater for a long time, should cut off the power supply of whole system and by the water in the water device emptying pipeline.
Advantage of the present utility model: only adopt fairly simple pipeline and circuit design, only just realize the function of a tractor serves several purposes, promptly finish water in the supercharging, hot water supercharging water outlet and the pipeline multiple functions such as freeze proof anticracking insulation that circulate with a water pump.Helping solar water heater promotes the use of in the very big numerous peasants and herdsmen area of annual day and night temperature.
Four, description of drawings
Fig. 1 is that the pipeline of embodiment of the present utility model connects and the control system principle schematic.
Fig. 2 is the current flow chart of the automatic loading water state of embodiment of the present utility model.
Fig. 3 is the current flow chart of the automatic recurrent state of embodiment of the present utility model.
Fig. 4 is the current flow chart of (or manually) automatically pressurized state of embodiment of the present utility model.
Among the figure: 1, (water tank water side) hand stop valve, 2, water tank water side magnetic valve, 3, water pipe line, 4, (water intaking end) hand stop valve, 5, water intaking end magnetic valve, 6, water pump, 7, pressure inductor, 8, the low temperature inductor, 9, shower bath, 10, tap, 11, water tank water intake end magnetic valve, 12, (water tank water intake end) hand stop valve, 13, optoelectronic switch, 14, circuit controller, 15, electric heater unit, 16, water level sensor, 17, temperature inductor, 18, water tank, 19, unidirectional stop valve.
Five, the specific embodiment
Below in conjunction with accompanying drawing the utility model is done detailed description.
As Fig. 1, a kind of pipelines of solar water heater connects and control system, comprise water pipe line 3, the water tank 18 that is connected with solar energy heat collection pipe, the electric heater unit 15 that connects with circuit controller 14 respectively is housed in the water tank 18, water level sensor 16 and temperature inductor 17, it is characterized in that water pipe line 3 is: the water intaking end magnetic valve 5 that is connected in the water intaking end, the water side of water intaking end magnetic valve 5 is divided into two-way by a three-way pipe, lead up to water tank water side magnetic valve 2 back joining water box 18, another road by behind the self prime pump 6 again by water tank water intake end magnetic valve 11 back joining water box 18, and between water pump 6 and water tank water intake end magnetic valve 11, be connected with water device (shower bath 9 and tap 10);
Wherein, the circuit of water pump 6, water intaking end magnetic valve 5, water tank water intake end magnetic valve 11 and water tank water side magnetic valve 2 connects with circuit controller 14 respectively;
And low temperature inductor 8 is housed on water pipe line 3, on the water side of water tank 18 and the water pipe line 3 between the water device (shower bath 9 and tap 10) pressure inductor 7 is housed, the circuit of low temperature inductor 8 and pressure inductor 7 connects with circuit controller 14 respectively.
In the water tank water side hand stop valve 1 is housed, the water tank water intake end is equipped with hand stop valve 12, and the water intaking end is equipped with hand stop valve 4.
The water intaking end is equipped with unidirectional stop valve 19 drawing water.
Water intaking end magnetic valve 5, water tank water intake end magnetic valve 11 and water tank water side magnetic valve 2 all are low-voltage solenoid valves, and water tank water side magnetic valve 2 is normally open solenoid valves, and water intaking end magnetic valve 5 and water tank water intake end magnetic valve 11 are normally closed solenoid valves.
Wherein:
One, main components and parts title and function further describe as follows:
Numbering 1,4,12: hand stop valve; Main application is to need repairing, when improving, close hand stop valve at pipeline and pipeline components and parts, is convenient to maintenance.
2,5,11: low-voltage solenoid valve: main application is the different demands according to duty, by providing or disconnect the direct current safe voltage work loop of 12V, makes pipeline be in the switching state, realizes the normal operation of each function.Wherein: 2 is normally open solenoid valve, and 5,11 is normally closed solenoid valve.
The 3:PPR water pipe line: connect the pipeline of whole water route operation, specification is decided according to the water route flow
6: self prime pump: unique motive power of whole pipeline forced service, a tractor serves several purposes; During last water: can finish from 20 meters of the degree of depth with the interior deep-well with water from drinking up, and deliver to water tank; During supercharging: requiring again has pressure more than the 0.2MPa, circulation time: can fully promote liquid flow at delivery port.Core component for this pipe-line system.
17, temperature inductor: the temperature that the relatively-high temperature district is sensed is sent circuit controller 14 back to and is done temperature and show and use; And one the tunnel do the radix of heating, and one the tunnel does temperature difference radix.
8, low temperature inductor: the temperature that low-temperature space is sensed is sent circuit controller 14 back to and is done temperature and show and use; Simultaneously can do temperature difference radix.
18, water tank: the water tank that water storage is used is mainly used in water storage and insulation.
9, shower head: bathing is used, and comprises mixing water valve etc.
7, pressure inductor: the pipe internal pressure of sensing in selected pool is during less than 0.2MPa, and circuit controller 14 provides one " connection " signal enabling self prime pump 6; When pressure during greater than 0.2MPa, circuit controller 14 provides one " disconnection " signal, and self prime pump 6 quits work not repressurize.
10, tap: make a general reference other purposes waters.
13, optoelectronic switch or other purposes switches: as optoelectronic switch can be installed in water must through room and zone, after optoelectronic switch detects the situation of doubtful flow of personnel, export a switching signal, trigger function of increasing pressure and enter duty, or be used for the magnetic valve of constant temperature and infrared probe use etc.
14, circuit controller: by the connecting and disconnecting of the circuit of setting the corresponding components and parts of control.
15, electric heater unit: when the temperature of sensing when temperature inductor 17 was lower than design temperature, this device started heating, promotes this regional temperature.
16, water level sensor; With storage tank 18 internal inductions to water level information send circuit controller 14 back to and do temperature and show to use; The radix of do water simultaneously, cutting off the water.
19, unidirectional stop valve: be mainly used in the unidirectional current that end, reduce emptying time.
Two, pipeline groundwork principle further describes as follows again: connect the water route, connect power supply and each power line, hand stop valve 1,4,12 is in open position, give circuit controller 14 power supplies, complete machine is started working.
1. the automatic loading water function realizes: when the water level of sensing water tank 18 when water level sensor was lower than minimum setting value, circuit controller 14 was exported two groups of voltage circuits simultaneously; Magnet valve 2,5,11 work of powering simultaneously of the DC voltage loop of one group of 12V/1A, make magnetic valve 2 be in cut-off state, magnetic valve 5,11 is in opening state, one group 220V/1 kilowatt voltage circuit is for self prime pump 6 work, and current are through water head site → 19 → 4 → 5 → 6 → 11 → 12 → 18; Begin to go up water, the water level of water tank 18 is raise; When the water level of sensing water tank 18 when the water level sensor 16 of water tank 18 reached the peak level setting value, the voltage circuit of output disconnected simultaneously, and self prime pump 6, magnetic valve 2,5,11 quit work simultaneously, get back to holding state automatically.
2. automatically circulatory function realizes: the temperature gap that the temperature of sensing when low temperature inductor 8 and high temperature inductor 17 are sensed is when setting value, and circuit controller 14 is exported two groups of voltage circuits simultaneously; DC voltage loop power supply magnet valve 11 work of one group of 12V/1A, one group 220V/1 kilowatt voltage circuit is for self prime pump 6 work, and current are through water tank 18 → 1 → 2 → 6 → 11 → 12 → 18; Make 8 and 17 water temperature equilibriums; When the temperature gap of 8 and 17 water temperatures during less than setting value, the voltage circuit of output disconnects simultaneously, and self prime pump 6, magnetic valve 11 quit work simultaneously, get back to holding state automatically.The direct magnetic valve 11 of the signal of telecommunication and the self prime pump 6 that also can be transformed into the temperature value that the low temperature inductor is sensed.
3. hand supercharging function: for reducing cost, system can match the function of no pressure controller, when the needs supercharging, the hand supercharging switch (not drawing among the figure) of crawl circuit controller 14, output 220V alternating current, for self prime pump 6 work, current are through water tank 18 → 1 → 2 → 6 → 9 or 10 output waters.When without supercharging, crawl hand supercharging switch powered-down, the voltage circuit of output disconnects, and self prime pump 6 quits work, and gets back to holding state automatically.
4. automatic function of increasing pressure: the pressure of sensing when pressure inductor 7 is during less than setting value (the general requirement is pressure more than the 0.2MPa), circuit controller 14 output 220V alternating currents, for self prime pump 6 work, current are through water tank 18 → 1 → 2 → 6 → 9 or 10 output waters.When water not, the electric power loop of self prime pump 6 disconnects, and gets back to holding state automatically.
5. automatic heating function: when promptly the temperature value of sensing selection area (being the water in the water tank 18) when temperature inductor 17 is lower than setting value, export one group 220V/3 kilowatt voltage circuit, 15 work of power supply heater produce heat, and the water temperature in the water tank 18 is raise; When the water temperature in the water tank 18 reached setting value, the 220V/3 of output kilowatt voltage circuit disconnected, and power supply heater 15 quits work, and gets back to holding state automatically.
As long as this system is in running order, just can realize the function of water device " one opens instant-heating and outlet hot "; If this system is appropriate change (as increasing by two magnetic valves etc. at water place front end, hot and cold water effectively being mixed) again, can also solve the problem of " sad temperature discharges water ".
Claims (5)
1. a pipelines of solar water heater connects and control system, comprise water pipe line (3), the water tank that is connected with solar energy heat collection pipe (18), the electric heater unit (15) that connects with circuit controller (14) respectively is housed in the water tank (18), water level sensor (16) and temperature inductor (17), it is characterized in that water pipe line (3) is: the water intaking end magnetic valve (5) that is connected in the water intaking end, the water side of water intaking end magnetic valve (5) is divided into two-way by a three-way pipe, the back joining water box (18) of the water tank water side magnetic valve (2) of leading up to, another road by behind the water pump (6) again by water tank water intake end magnetic valve (11) back joining water box (18), and between water pump (6) and water tank water intake end magnetic valve (11), be connected with water device (9,10);
Wherein, the circuit of water pump (6), water intaking end magnetic valve (5), water tank water intake end magnetic valve (11) and water tank water side magnetic valve (2) connects with circuit controller (14) respectively;
And low temperature inductor (8) is housed on water pipe line (3), and low temperature inductor (8) connects with circuit controller (14).
2. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that on the water side of water tank (18) and the water pipe line (3) between the water device (9,10) pressure inductor (7) being housed, the circuit of pressure inductor (7) connects with circuit controller (14).
3. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that in the water tank water side hand stop valve (1) being housed, and the water tank water intake end is equipped with hand stop valve (12), and the water intaking end is equipped with hand stop valve (4).
4. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that the water intaking end is equipped with unidirectional stop valve (19).
5. pipelines of solar water heater according to claim 1 connects and control system, it is characterized in that water intaking end magnetic valve (5), water tank water intake end magnetic valve (11) and water tank water side magnetic valve (2) all are low-voltage solenoid valves, and water tank water side magnetic valve (2) is a normally open solenoid valve, and water intaking end magnetic valve (5) and water tank water intake end magnetic valve (11) are normally closed solenoid valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201766065U CN201488120U (en) | 2009-09-07 | 2009-09-07 | Solar water heater pipeline connecting and controlling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201766065U CN201488120U (en) | 2009-09-07 | 2009-09-07 | Solar water heater pipeline connecting and controlling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201488120U true CN201488120U (en) | 2010-05-26 |
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ID=42426999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201766065U Expired - Fee Related CN201488120U (en) | 2009-09-07 | 2009-09-07 | Solar water heater pipeline connecting and controlling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201488120U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650051B (en) * | 2009-09-07 | 2012-05-23 | 邓德万 | Pipeline connecting and controlling system of solar water heater |
| TWI495833B (en) * | 2012-01-20 | 2015-08-11 | ||
| CN110500790A (en) * | 2019-07-26 | 2019-11-26 | 徐州力奥新能源设备有限公司 | The plug-in water heater of pressurization suitable for solar energy |
-
2009
- 2009-09-07 CN CN2009201766065U patent/CN201488120U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650051B (en) * | 2009-09-07 | 2012-05-23 | 邓德万 | Pipeline connecting and controlling system of solar water heater |
| TWI495833B (en) * | 2012-01-20 | 2015-08-11 | ||
| CN110500790A (en) * | 2019-07-26 | 2019-11-26 | 徐州力奥新能源设备有限公司 | The plug-in water heater of pressurization suitable for solar energy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20100907 |