CN205156364U - Thermo valve controlling means and water heater - Google Patents
Thermo valve controlling means and water heater Download PDFInfo
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- CN205156364U CN205156364U CN201520910801.1U CN201520910801U CN205156364U CN 205156364 U CN205156364 U CN 205156364U CN 201520910801 U CN201520910801 U CN 201520910801U CN 205156364 U CN205156364 U CN 205156364U
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- water
- way magnetic
- control device
- controller
- magnetic valve
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Abstract
The utility model discloses a thermo valve controlling means and water heater, wherein, this thermo valve controlling means includes three solenoid valve, temperature sensor and controller, three solenoid valve include inflow entrance, first -class export and second egress opening, the inflow entrance is connected with the constant temperature outlet pipe, first -class exit linkage has first discharge pipe, the second egress opening is connected with the second discharge pipe, temperature sensor with the controller electricity is connected, and actual temperature is carried extremely in the collection constant temperature outlet pipe the controller, the controller with three solenoid valve electricity is connected, controls three solenoid valve's inflow entrance and first -class export intercommunication, controls three solenoid valve's inflow entrance and second egress opening intercommunication to and three solenoid valve's of control first -class export and second egress opening intercommunication. The utility model discloses the technical scheme hot water of can discharging immediately satisfies people's operation requirement, is favorable to improving people's quality of life to can reduce the maintenance cost.
Description
Technical field
The utility model relates to technical field of water heaters, particularly a kind of thermostatic valve control device and water heater.
Background technology
At present, it is non-constant all to there is leaving water temperature in all kinds of water heater of the prior art (as gas heater, solar water heater, air-source water heater etc.), needs the water of releasing a period of time when water outlet to regulate water temperature problem.Market also there is the product of a lot of thermostatic valve, but these thermostatic valves generally can not solve the function directly deriving hot water when opening, particularly thermostatic valve and gas heater with the use of time, the position of general combustion hot installation site distance thermostatic valve is far away, when causing just using combustion heat, thermostatic valve needs manual adjustments to release cold water, and for gondola water faucet, generally needing to release duration is that the cold water of about one minute could derive hot water.At present, also there is a kind of water-saving device of water heater on the market, adopt the opening and closing of each port of temperature sensitive triple valve control piper, can cold water be derived and store, then deriving hot water, and utilize the cold water stored to be supplemented in the water inlet pipe of water heater.In such scheme, the temperature of the hot water of derivation needs to adjust according to the requirement of user, cannot meet the demand of user.And when adopting temperature sensitive triple valve to break down, need to replace whole temperature sensitive triple valve, inconvenience maintenance, maintenance cost is high.
Utility model content
Main purpose of the present utility model is to provide a kind of thermostatic valve control device, and being intended to solve water heater derives hot water, the life be convenient for people to immediately, and the problem reducing maintenance cost.
For achieving the above object, the thermostatic valve control device that the utility model proposes, comprises three-way magnetic valve, temperature sensor and controller;
Described three-way magnetic valve comprises inflow entrance, first-class outlet and second outlet, and described inflow entrance is connected with constant-temperature effluent pipe, and described first-class outlet is connected with the first discharge pipe, and described second outlet is connected with the second discharge pipe;
Described temperature sensor is electrically connected with described controller, gathers actual water temperature in described constant-temperature effluent pipe and is delivered to described controller;
Described controller is electrically connected with described three-way magnetic valve, controls the inflow entrance of three-way magnetic valve and first-class outlet, controls inflow entrance and the second outlet of three-way magnetic valve, and controls first-class outlet and the second outlet of three-way magnetic valve.
Preferably, described controller comprises analog to digital conversion circuit and comparison circuit; The input of analog-digital conversion circuit as described is electrically connected with described temperature sensor, and the output of analog-digital conversion circuit as described is connected with an input of described comparison circuit; Another input of described comparison circuit is ADC value corresponding to default water temperature threshold value, and the output of described comparison circuit is electrically connected with described three-way magnetic valve.
Preferably, described controller also comprises timing circuit, described timing circuit is electrically connected with the output of comparison circuit, according to the output signal triggering timing of comparison circuit, and after timing time arrives, produce control signal, the second of closing described three-way magnetic valve exports and controls the inflow entrance of described three-way magnetic valve and first-class outlet conducting.
Preferably, described timing time is 4-6s.
Preferably, also comprise water tank, the water inlet of described water tank is connected to cold water inlet, hot water inlet pipe, and the delivery port of described water tank is connected with the free end of described constant-temperature effluent pipe.
Preferably, also comprise and to be electrically connected with controller and to be positioned at the thermostat module of described water tank, in order to heat and/or constant temperature process the mixing water in water tank according to described controller.
Preferably, described water tank sidewall is provided with bilge discharge pipe near the position of bottom or water tank bottom, in order to discharge the impurity being deposited on water tank bottom.
Preferably, also comprise housing, described housing is in order to accommodating three-way magnetic valve, temperature sensor and water tank.
Preferably, also comprise the control panel be electrically connected with controller, in order to set described default water temperature threshold value.
The utility model also proposes a kind of water heater, comprise storage tank, heater and thermostatic valve control device, described storage tank is connected with cold water inlet and hot water inlet pipe, described heater is arranged at outside hot water inlet pipe, described storage tank is communicated with thermostatic valve control device respectively by cold water inlet and hot water inlet pipe, and described thermostatic valve control device comprises three-way magnetic valve, temperature sensor and controller;
Described three-way magnetic valve comprises inflow entrance, first-class outlet and second outlet, and described inflow entrance is connected with constant-temperature effluent pipe, and described first-class outlet is connected with the first discharge pipe, and described second outlet is connected with the second discharge pipe;
Described temperature sensor is electrically connected with described controller, gathers actual water temperature in constant-temperature effluent pipe and is delivered to described controller;
Described controller is electrically connected with described three-way magnetic valve, controls the inflow entrance of three-way magnetic valve and first-class outlet, controls inflow entrance and the second outlet of three-way magnetic valve, and controls first-class outlet and the second outlet of three-way magnetic valve.
Technical solutions of the utility model, by the discharge adopting three-way magnetic valve, temperature sensor and controller to control constant-temperature effluent pipe, can discharge hot water immediately.Concrete, this programme utilizes the actual water temperature data in temperature sensor collection constant-temperature effluent pipe, and utilize controller actual water temperature data and default water temperature threshold value to be compared, and then each port of three-way magnetic valve is closed and gating control, first can control water temperature in constant-temperature effluent pipe in default water temperature threshold value, then derive the cold water in the first discharge pipe (being connected to gondola water faucet or tap), the use water of set water temperature is directly derived finally by the first discharge pipe, the water temperature deriving water is in constant range, lives with the house be convenient for people to; In addition, three-way magnetic valve, temperature sensor and controller are provided separately, and are conducive to reducing maintenance cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, the structure according to these accompanying drawings can also obtain other accompanying drawing.
Fig. 1 is the structural representation of the utility model thermostatic valve control device one embodiment;
Fig. 2 is the functional module block diagram of Fig. 1;
Fig. 3 is the circuit module figure of Fig. 2 middle controller;
Fig. 4 is the structural representation of another embodiment of the utility model thermostatic valve control device;
Fig. 5 is the functional module block diagram of Fig. 4.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 10 | Water tank | 20 | Thermostat module |
| 30 | Temperature sensor | 40 | Three-way magnetic valve |
| 51 | Cold water inlet | 52 | Hot water inlet pipe |
| 53 | Constant-temperature effluent pipe | 54 | First discharge pipe |
| 55 | Second discharge pipe | 56 | Bilge discharge pipe |
| 60 | Housing | 70 | Controller |
| 80 | Control panel | 41 | First-class outlet |
| 42 | Second exports | 43 | Inflow entrance |
| 71 | Analog to digital conversion circuit | 72 | Comparison circuit |
| 73 | Timing circuit |
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Need explanation, all directionality instruction (such as up, down, left, right, before and afters in the utility model embodiment ...) only for explaining the relative position relation, motion conditions etc. under a certain particular pose (as shown in drawings) between each parts, if when this particular pose changes, then directionality instruction also correspondingly changes thereupon.
In addition, in the utility model, relate to the description of " first ", " second " etc. only for describing object, and instruction can not be interpreted as or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In addition; technical scheme between each embodiment can be combined with each other; but must be can be embodied as basis with those of ordinary skill in the art; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exist, also not the utility model require protection domain within.
The utility model proposes a kind of thermostatic valve control device, in order to discharge the hot water of design temperature.
With reference to the structural representation that Fig. 1, Fig. 1 are the utility model thermostatic valve control device one embodiment; Fig. 2 is the block diagram of Fig. 1.
In the utility model embodiment, this thermostatic valve control device as illustrated in fig. 1 and 2, comprises three-way magnetic valve 40, temperature sensor 30 and controller 70.
Described three-way magnetic valve 40 comprises inflow entrance 43, first-class outlet 41 and second outlet 42, described inflow entrance 43 is connected with constant-temperature effluent pipe 53, described first-class outlet 41 is connected with the first discharge pipe 54, and described second outlet 42 is connected with the second discharge pipe 55.
Described temperature sensor 30 is electrically connected with described controller 70, gathers the actual water temperature data in constant-temperature effluent pipe 53 and is delivered to described controller 70.
Described controller 70 is electrically connected with described three-way magnetic valve 40, the inflow entrance 43 controlling three-way magnetic valve 40 is communicated with first-class outlet 41, the inflow entrance 43 controlling three-way magnetic valve 40 exports 42 with second and is communicated with, and the first-class outlet 42 controlling three-way magnetic valve 40 is communicated with second outlet 43.
Above-mentioned controller 70 is in order to compare actual water temperature and default water temperature threshold value, according to the actual water temperature exceeding default water temperature threshold value, close described first-class outlet 41 and control described inflow entrance 43 and export 42 with second and be communicated with the cold water of deriving in constant-temperature effluent pipe 53; According to the actual water temperature be in default water temperature threshold value, close described inflow entrance 43 and control described first-class outlet 41 and export with second the cold water that 42 are communicated with to derive the first discharge pipe 54, after setting-up time, close described second outlet 42 and control described inflow entrance 43 and be communicated with hot water to derive design temperature from the first discharge pipe 54 with first-class outlet 41, the circuit of concrete controller 70 is with reference to following embodiment.
Above-mentioned temperature sensor 30 is in order to detect the actual water temperature in constant-temperature effluent pipe 53, and be delivered to controller 70 and process, default water temperature threshold value is stored in controller 70, and actual water temperature is compared with default water temperature threshold value, and then transmit control signal to three-way magnetic valve 40, three-way magnetic valve 40 processes accordingly according to control signal, uses water with what realize immediately deriving set water temperature.In addition, when the water temperature in constant-temperature effluent pipe 53 is not within the scope of design temperature, can be adjusted to set water temperature by thermostat module 20, concrete scheme can consult following embodiment.In addition, above-mentioned superheated water refers to that water temperature exceedes the hot water of default water temperature threshold value.Above-mentioned setting-up time is 4-6s, and preferred setting-up time is 4s, 5s, 6s, and because the cold water in the first discharge pipe 54 is discharged from the second discharge pipe 55 by self gravitation effect, and the time of discharging is shorter, can shorten period of reservation of number.The precision of above-mentioned default water temperature threshold value is within positive and negative 2 degrees Celsius.
Technical solutions of the utility model, by the discharge adopting three-way magnetic valve 40, temperature sensor 30 and controller 70 to control constant-temperature effluent pipe 53, can discharge hot water immediately.Concrete, this programme utilizes temperature sensor 30 to gather actual water temperature data in constant-temperature effluent pipe 53, and utilize controller 70 actual water temperature data and default water temperature threshold value to be compared, and then each port of three-way magnetic valve 40 is closed and gating control, first can control water temperature in constant-temperature effluent pipe 53 in default water temperature threshold value, then derive the cold water in the first discharge pipe 54 (being connected to gondola water faucet or tap), the use water of set water temperature is directly derived finally by the first discharge pipe 54, the water temperature deriving water is in constant range, live with the house be convenient for people to, in addition, three-way magnetic valve, temperature sensor and controller are provided separately, and are conducive to reducing maintenance cost.
Consult Fig. 1, in a specific embodiment, also comprise water tank 10, the water inlet of described water tank 10 is connected to cold water inlet 51, hot water inlet pipe 52, and the delivery port of described water tank 10 is connected with the free end of described constant-temperature effluent pipe 53.When actual water temperature is higher than default water temperature threshold value, cold water inlet 51 lead-in portion cold water can also be controlled, to reduce water temperature fast and to reach set water temperature requirement, or first from the second discharge pipe 55 export section superheated water, then cold water inlet 51 lead-in portion cold water is controlled, to reduce water temperature rapidly and to reach set water temperature requirement.
Consult Fig. 1 and Fig. 2, in a specific embodiment, also comprise the thermostat module 20 be electrically connected with controller 70, in order to heat and/or constant temperature process according to the mixing water in described controller 70 pairs of water tanks 10.This thermostat module can also be heating component, as heating spool, heating plate etc., to heat mixing water.
Concrete, described thermostat module 20 is positioned at water tank 10.Generally speaking, thermostat module 20 is installed in water tank 10, by thermostat module 20 directly to mixing water heating, as heating spool, heating plate etc.This thermostat module can also comprise the conducting-heat elements being positioned at water tank 10 outer wall, utilizes conducting-heat elements to heat the mixing water in water tank 10.
With reference to Fig. 3, in a specific embodiment, described controller 70 comprises analog to digital conversion circuit 71 and comparison circuit 72; The input of analog-digital conversion circuit as described 71 is electrically connected with described temperature sensor 30, and the output of analog-digital conversion circuit as described 71 is connected with an input of described comparison circuit 72; Another input of described comparison circuit 72 is ADC value corresponding to default water temperature threshold value, and the output of described comparison circuit 72 is electrically connected with described three-way magnetic valve 40.The temperature data that this temperature sensor 30 gathers is analogue data, this analogue data is converted to numerical data by analog to digital conversion circuit 71, and numerical data is delivered to comparison circuit 72, the comparison end of this comparison circuit 72 can set default water temperature threshold value, by compare actual measurement water temperature data and default water temperature threshold value draw comparative result, and the comparative result of default water temperature threshold value is less than according to actual measurement water temperature data, close the first-class outlet 41 of three-way magnetic valve 40, and the inflow entrance 43 controlling three-way magnetic valve 40 exports 42 conductings with second, this control first use hot water time derive the cold water of constant-temperature effluent pipe 53, after cold water is drained, to to heat in constant-temperature effluent pipe 53 or after constant temperature process, according to the comparative result of actual measurement water temperature data now and default water temperature threshold value, close inflow entrance 43 in three-way magnetic valve 40, and the first-class outlet 41 controlling described three-way magnetic valve 40 exports 42 conductings, to discharge the cold water in the first discharge pipe 54 with second, close the second outlet 42 of three-way magnetic valve 40 after drained cold water, and control the inflow entrance 43 of three-way magnetic valve 40 and first-class outlet 41 conducting, realize immediately discharging hot water.
Further, described controller 70 also comprises timing circuit 73, described timing circuit 73 is electrically connected with the output of comparison circuit 72, according to the output signal triggering timing of comparison circuit 72, and after timing time arrives, produce control signal, close the second outlet 42 of described three-way magnetic valve 40, control the inflow entrance 43 of described three-way magnetic valve 40 and first-class outlet 41 conducting.This control signal is closed at the inflow entrance 43 of three-way magnetic valve 40, when first-class outlet 41 and second export 42 conducting, this state sets timing time by user according to actual requirement, with the cold water in drained first discharge pipe 54, after completing timing time, close the second outlet 42 of three-way magnetic valve 40, and utilize control signal to control the inflow entrance 43 of three-way magnetic valve 40 and first-class outlet 41 conducting, immediately derive hot water.
In concrete scheme, this timing time is 4-6s, it should be noted that this timing time length can be arranged according to the requirement of reality, and be limited to 4-6s, other time range is also feasible scheme.
It is to be noted, when discharging the cold water in constant-temperature effluent pipe 53, also time set can be carried out to three-way magnetic valve 40, and now timing circuit 73 is provided with the first timing time and the second timing time, after first timing time reaches, close the inflow entrance 43 of three-way magnetic valve 40, the first-class outlet 41 controlling three-way magnetic valve 40 exports 42 conductings with second; And after the second timing time reaches, close the second outlet 42 of three-way magnetic valve 40, the inflow entrance 43 controlling three-way magnetic valve 40 exports 42 conductings with second.
Consult Fig. 4, in a specific embodiment, described water tank 10 sidewall is provided with bilge discharge pipe 56 bottom the position or water tank 10 of bottom, and this bilge discharge pipe 56 is in order to discharge the impurity be deposited on bottom water tank 10.During long-term use, water tank 10 bottom deposit has impurity, needs regularly to clean water tank 10, and the water after cleaning is discharged outside water tank 10 by this bilge discharge pipe 56.
Consult Fig. 1 and Fig. 4, in a specific embodiment, described housing 60 is in order to accommodating three-way magnetic valve 40, temperature sensor 30 and water tank 10.This housing 60 provides one deck containment vessel for three-way magnetic valve 40, temperature sensor 30 and water tank 10, is conducive to the protection to internal components, and in addition, this housing 60 additionally provides installing space, facilitates the assembling of three-way magnetic valve 40 and water tank 10.
Consult Fig. 5, in a specific embodiment, also comprise the control panel 80 be electrically connected with controller 70, in order to set described default water temperature threshold value.This control panel 80 according to the requirement set water temperature threshold value of user, startup or closing controller 70, or can control thermostat module 20.In addition, when causing constant-temperature effluent variations in temperature when the change such as cold and hot inflow temperature, pressure of mixing water, this thermostat module can also carry out constant temperature process automatically according to the value of user's setting.
Consult Fig. 1 and Fig. 4, in a specific embodiment, the free end of described first discharge pipe 54 is connected with gondola water faucet or tap.When opening gondola water faucet or tap, the hot water of the first discharge pipe 54 directly flows out from gondola water faucet or tap, and the hot water due to the first discharge pipe 54 is the use water of set water temperature, can meet customer requirement well.
The utility model also proposes a kind of water heater, comprise storage tank, heater and thermostatic valve control device, described storage tank is connected with cold water inlet and hot water inlet pipe, described heater is arranged at outside hot water inlet pipe, described storage tank is communicated with thermostatic valve control device respectively by cold water inlet and hot water inlet pipe, the concrete structure of this thermostatic valve control device is with reference to above-described embodiment, because this water heater have employed whole technical schemes of above-mentioned all embodiments, therefore all beneficial effects that the technical scheme at least having above-described embodiment is brought, this is no longer going to repeat them.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every under inventive concept of the present utility model; utilize the equivalent structure transformation that the utility model description and accompanying drawing content are done, or directly/be indirectly used in other relevant technical fields to include in scope of patent protection of the present utility model.
Claims (10)
1. a thermostatic valve control device, is characterized in that, comprises three-way magnetic valve, temperature sensor and controller;
Described three-way magnetic valve comprises inflow entrance, first-class outlet and second outlet, and described inflow entrance is connected with constant-temperature effluent pipe, and described first-class outlet is connected with the first discharge pipe, and described second outlet is connected with the second discharge pipe;
Described temperature sensor is electrically connected with described controller, gathers actual water temperature in constant-temperature effluent pipe and is delivered to described controller;
Described controller is electrically connected with described three-way magnetic valve, controls the inflow entrance of three-way magnetic valve and first-class outlet, controls inflow entrance and the second outlet of three-way magnetic valve, and controls first-class outlet and the second outlet of three-way magnetic valve.
2. thermostatic valve control device as claimed in claim 1, it is characterized in that, described controller comprises analog to digital conversion circuit and comparison circuit; The input of analog-digital conversion circuit as described is electrically connected with described temperature sensor, and the output of analog-digital conversion circuit as described is connected with an input of described comparison circuit; Another input of described comparison circuit is ADC value corresponding to default water temperature threshold value, and the output of described comparison circuit is electrically connected with described three-way magnetic valve.
3. thermostatic valve control device as claimed in claim 2, it is characterized in that, described controller also comprises timing circuit, described timing circuit is electrically connected with the output of comparison circuit, according to the output signal triggering timing of comparison circuit, and after timing time arrives, produce control signal, close the second outlet of described three-way magnetic valve, and control the inflow entrance of described three-way magnetic valve and first-class outlet conducting.
4. thermostatic valve control device as claimed in claim 3, it is characterized in that, described timing time is 4-6s.
5. thermostatic valve control device as claimed in claim 1, it is characterized in that, also comprise water tank, the water inlet of described water tank is connected to cold water inlet, hot water inlet pipe, and the delivery port of described water tank is connected with the free end of described constant-temperature effluent pipe.
6. thermostatic valve control device as claimed in claim 5, is characterized in that, also comprises and to be electrically connected with controller and to be positioned at the thermostat module of described water tank, in order to heat and/or constant temperature process the mixing water in water tank according to described controller.
7. thermostatic valve control device as claimed in claim 5, is characterized in that, described water tank sidewall is provided with bilge discharge pipe, in order to discharge the impurity being deposited on water tank bottom near the position of bottom or water tank bottom.
8. thermostatic valve control device as claimed in claim 2, it is characterized in that, also comprise housing, described housing is in order to accommodating three-way magnetic valve, temperature sensor and water tank.
9. thermostatic valve control device as claimed in claim 2, is characterized in that, also comprise the control panel be electrically connected with controller, in order to set described default water temperature threshold value.
10. a water heater, comprise storage tank, heater and thermostatic valve control device, described storage tank is connected with cold water inlet and hot water inlet pipe, described heater is arranged at outside hot water inlet pipe, described storage tank is communicated with thermostatic valve control device respectively by cold water inlet and hot water inlet pipe, it is characterized in that, described thermostatic valve control device is the thermostatic valve control device as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910801.1U CN205156364U (en) | 2015-11-13 | 2015-11-13 | Thermo valve controlling means and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910801.1U CN205156364U (en) | 2015-11-13 | 2015-11-13 | Thermo valve controlling means and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205156364U true CN205156364U (en) | 2016-04-13 |
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ID=55692049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520910801.1U Expired - Fee Related CN205156364U (en) | 2015-11-13 | 2015-11-13 | Thermo valve controlling means and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205156364U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202425A (en) * | 2017-04-17 | 2017-09-26 | 新奥泛能网络科技股份有限公司 | Water heater end adjusting means and the water heater components with it |
| CN112224692A (en) * | 2019-06-30 | 2021-01-15 | 西安众力沥青有限公司 | Liquid storage equipment |
-
2015
- 2015-11-13 CN CN201520910801.1U patent/CN205156364U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202425A (en) * | 2017-04-17 | 2017-09-26 | 新奥泛能网络科技股份有限公司 | Water heater end adjusting means and the water heater components with it |
| CN112224692A (en) * | 2019-06-30 | 2021-01-15 | 西安众力沥青有限公司 | Liquid storage equipment |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20211113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |