CN203928107U - A kind of novel environment friendly heating plant - Google Patents
A kind of novel environment friendly heating plant Download PDFInfo
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- CN203928107U CN203928107U CN201420171132.6U CN201420171132U CN203928107U CN 203928107 U CN203928107 U CN 203928107U CN 201420171132 U CN201420171132 U CN 201420171132U CN 203928107 U CN203928107 U CN 203928107U
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Abstract
The utility model relates to a kind of novel environment friendly heating plant, comprise heating unit and the radiating subassembly (3) that is located at heating end, heating unit comprises the Heat source device (1) for hot working fluid is provided, described radiating subassembly (3) comprises some super conduction heat energy pipes (3-1), one end of super conduction heat energy pipe (3-1) is heat absorbing end, the other end is radiating end, and the heat absorbing end of super conduction heat energy pipe (3-1) contacts with hot working fluid.The novel environment friendly heating plant that the utility model provides, it is simple in structure, is easy to install, and adopts this device to carry out heating, can greatly reduce heating cost, has excellent energy-conservation and environmental benefit simultaneously.
Description
Technical field
The utility model belongs to heating technology field, is specifically related to a kind of novel environment friendly heating plant.
Background technology
China's atmosphere pollution is serious, has directly affected people's health and socio-economic development, and the haze invasion and attack of going out morning are just as the dam swelling of bursting, and one pungent coal tar taste blast is flutterred face, the smell people that chokes, and pedestrian feels suffocated, is difficult to walk.
Cause the root of haze to have multiple, the gas that China is produced by coal combustion and ash are the most important things.Consumption coal rich and influential family is various big and small coal furnaces, boiler, according to the tonnage of the size of coal consumption and boiler, roughly be divided into large, medium and small three classes: 1) medium-and-large-sized boiler more than evaporation capacity 50t/h, belong to a class, substantially be all equipped with desulfurating dust-removing equipment, management standardization, clarifying smoke rate can reach more than 95%.2) medium small boiler below evaporation capacity 1.0t/h-50t/h, belong to two classes, the whole nation is numerous at consumption, wherein: taking residential communities, building building heating boiler is main users, major part has been equipped with desulfurating dust-removing equipment, but, shortcoming is that desulfurating dust-removing equipment is simple and easy, poor reliability, and operating personnel's technical quality is low, operate badly, clarifying smoke situation is poor.3) arcola below evaporation capacity 1.0t/h, coal furnace, belongs to three classes, and flue gas soars up to the sky, and spreads all over the place, countless, is close to the masses, everyday gets along, and all cries out every year anti-coal gas, has people poisoning every year.
From above-mentioned analysis situation, the haze that the coal-burning boiler within the scope of two classes causes belongs to the most important thing, is again the difficulty in difficulty, in order thoroughly forever to reduce haze, must process sooner or later, and complete removal is best; Coal furnace within the scope of three classes has a large capacity and a wide range, and flue gas 100% drains in atmosphere, especially the object of complete removal as early as possible; The energy in order displacement plan ultimate aim should be that the coal-burning boiler within the scope of two classes and three classes is thoroughly rooted out, by stages, in batches, the clearing out of burst, away from coal, pull the grass up by its roots, haze is just no longer lived again or is seldom occurred.
In addition, existing heating plant need to be installed a large amount of delivery pipeline and circulating line, and engineering is huge, and annual maintenance cost is also high, and it is low to be arranged on the heat transfer efficiency of the steam heating pipe in user family, and water consumption is large, and energy consumption is high.
Obviously, if to remove for heat, arcola and coal furnace, be badly in need of developing the heating plant of novel environment friendly.
Utility model content
For the defect existing in prior art, the purpose of this utility model is to provide a kind of novel environment friendly heating plant, and this apparatus structure is simple, be easy to install, adopt this device to carry out heating, can greatly reduce heating cost, there is excellent energy-conservation and environmental benefit simultaneously.
For reaching above object, the technical solution adopted in the utility model is: a kind of novel environment friendly heating plant, comprise heating unit and the radiating subassembly that is located at heating end, heating unit comprises the Heat source device for hot working fluid is provided, described radiating subassembly comprises some super conduction heat energy pipes, one end of super conduction heat energy pipe is heat absorbing end, and the other end is radiating end, and the heat absorbing end of super conduction heat energy pipe contacts with the hot working fluid of heating unit.
Further, Heat source device comprises the housing for accommodating hot working fluid, and Heat source device is connected with radiating subassembly split by heat supplying pipeline coupled and that form hot working fluid flow cycle, and the heat absorbing end of the super conduction heat energy pipe of radiating subassembly extend in heat supplying pipeline.
Further again, in the housing of Heat source device, be provided with supporting heating element heater, the housing of Heat source device is provided with cooling water inlet and hot water outlet, and hot water outlet end is provided with hot water current divider, and hot water current divider is provided with multiple diffluence pass; The cooling water inlet of Heat source device is connected with a cyclic water tank, cyclic water tank is provided with cold water and adds entrance and backwater import, backwater import is connected with water return pipeline, the water inlet of water return pipeline is provided with backwater diffluence device, backwater diffluence device is provided with multiple diffluence pass, between the backwater import of backwater diffluence device and cyclic water tank, is provided with circulating pump; Heat supplying pipeline comprises some heat supply branch roads, on every heat supply branch road, be all provided with heat supply case, the two ends of each heat supply case are respectively equipped with import and export, and the entrance point of each heat supply case is connected from the different diffluence pass of hot water current divider respectively, the port of export of each heat supply case is connected from the different diffluence pass of backwater diffluence device respectively; One side of each heat supply case also has some connecting holes, and the heat absorbing end of the super conduction heat energy pipe of radiating subassembly is connected to the connection hole of heat supply case.
Further, radiating subassembly also comprises two fixed heads, and each fixed head is provided with some locating holes, and the two ends of the super conduction heat energy pipe of radiating subassembly are located at respectively in locating hole corresponding on two fixed heads.
Again further, the bottom of two of radiating subassembly fixed heads is connected with respectively roller.
Further, Heat source device, cyclic water tank, hot water current divider, backwater diffluence device and circulating pump are located in a casing, and the bottom of casing is connected with roller.
Further, Heat source device is connected with radiating subassembly one, Heat source device comprise for the housing of accommodating hot working fluid and with supporting heating element heater, the heat absorbing end of the super conduction heat energy pipe of radiating subassembly stretches in the housing of Heat source device.
Further again, the housing of described Heat source device is tubbiness, and the heat absorbing end of the super conduction heat energy pipe of radiating subassembly extend in housing from the top of tubbiness housing.
Or the housing of described Heat source device is U-shaped, the heat absorbing end of the super conduction heat energy pipe of radiating subassembly extend in U-shaped housing from the recess of U-shaped housing bottom; Described supporting heating element heater comprises the electrical bar being located in U-shaped housing recess and the temperature controller being connected with electrical bar; The top of U-shaped housing is connected with replenisher tank.
Further, radiating subassembly also comprises the fixed head of the radiating end that is located at super conduction heat energy pipe, and fixed head is provided with locating hole, and Heat source device and electrical heating elements are located on a support with roller, and the outer rim of fixed head is connected on the support with roller by pillar.
The utility model is transformed the radiating tube of existing heating installation radiating subassembly, the liquid high-efficiency heat conduction body of Vacuum Package (with reference to heat pipe correlation technique) in radiating tube, and by its closed at both ends, make super conduction heat energy pipe, when use, one end (heat absorbing end) of super conduction heat energy pipe contact with the heat transfer medium (as hot water) in indoor heating circulation line, conduct evaporation that in heat energy pipe, high-efficiency heat conduction body carries out repeatedly and the process of condensation by surpassing, can realize superthermal conduction.The beneficial effects of the utility model are:
The first, water saving, energy-conservation, saves.
The utility model water consumption is little, and water consumption is about 1:6 with the ratio of existing tubulose radiating subassembly water consumption, thereby has saved great lot of water resources.
Because the heat transfer rate of super conduction heat energy pipe is fast, heat transfer efficiency is high, saves the energy with respect to water conduction heat, and water consumption reduces 5 times, the also corresponding minimizing of power consumption that water heats up; Because water consumption is little, can utilize the existing water heater of every family, a tractor serves several purposes, has a bath at ordinary times, manufacture hot water's temperature-rising heating when it is cold, when sky heat, logical cold water is room temperature lowering, has economized air-conditioning, reduces electricity consumption.
Current, suburbanite's building empty nest rate in winter is quite large, does not need heating household also must hand over 60% heating installation expense in winter, causes on the one hand national resources loss, causes on the other hand individual unnecessary expenditures, and adopts this device can realize the target that both sides save.
The second, cost is low.The utility model need not separately be established thermal water source, just does not need to have filled hot water pipeline, has reduced the energy loss that a large amount of installation hot water pipelines cause; Need not separately establish thermal water source just does not need hot-water boiler has been set, and has reduced workman, equipment, has saved a large sum of expense, has also saved a large amount of national policy subsidies.
The 3rd, simple in structure, easy to operate.The utility model is simple in structure, is easy to assembling, and user can independently manipulate, do not rely on city central heating, has removed the embarrassment of when day heat " also do not supply gas when day cold, window greatly " from, practical flexibly.
Four, environmental protection.The utility model does not use boiler room, without chimney is installed, and smoke dust zero-emission, in environment, dustiness PM2.5 also can reduce greatly.
Brief description of the drawings
Fig. 1 is the schematic diagram of the first embodiment of a kind of novel environment friendly heating plant of providing of the utility model;
Fig. 2 is the schematic diagram of the second embodiment of a kind of novel environment friendly heating plant of providing of the utility model;
In Fig. 3 (a) be in Fig. 2 A to schematic diagram; (b) be in Fig. 2 B to schematic diagram;
Fig. 4 is the schematic diagram of the third embodiment of a kind of novel environment friendly heating plant of providing of the utility model;
Fig. 5 is the schematic diagram of the 4th kind of embodiment of a kind of novel environment friendly heating plant of providing of the utility model;
Fig. 6 is the schematic diagram of the 5th kind of embodiment of a kind of novel environment friendly heating plant of providing of the utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
A kind of novel environment friendly heating plant provided by the utility model, comprise heating unit and be located at the radiating subassembly 3 of heating end (part that the heat energy that the unit that refers to heat the most at last in heating plant provides transfers out), heating unit comprises the Heat source device 1 for hot working fluid is provided, radiating subassembly 3 comprises some super conduction heat energy pipe 3-1, one end of super conduction heat energy pipe 3-1 is heat absorbing end, the other end is radiating end, and the heat absorbing end of super conduction heat energy pipe 3-1 contacts with the hot working fluid of heating unit.Because super conduction heat energy pipe heat transfer rate is fast, heat transfer efficiency is high, and the utility model can promptly be taken office the thermal energy transfer of heating unit what is the need for by super conduction heat energy pipe and wanted, in the space of heating, then to realize heat loss through convection by air circulation.
In Heat source device 1, the heat energy source of hot working fluid has multiplely, can come from electricity, pipe natural gas, bottled gas, biogas, fuel oil, solar energy, industrial waste gas, used heat etc., can gather materials on the spot, and makes full use of heat resource.
As shown in Figure 1, in the first detailed description of the invention of the present utility model, Heat source device 1 can comprise the housing 1-1 for accommodating hot working fluid, Heat source device 1 is connected with radiating subassembly 3 splits by heat supplying pipeline 2 coupled and that form hot working fluid flow cycle, and the heat absorbing end of the super conduction heat energy pipe 3-1 of radiating subassembly 3 extend in heat supplying pipeline 2.
As shown in Figure 2, in the second detailed description of the invention of the present utility model, can supporting heating element heater (not shown) be set in the housing 1-1 of Heat source device 1, the housing 1-1 of Heat source device 1 is provided with cooling water inlet and hot water outlet.Wherein, Heat source device 1 can be water heater, such as electric heater, gas heater, solar water heater, Semi-conductor hot-water apparatus etc. or its combination.
In the above-described embodiment, can establish hot water current divider 5 at the hot water outlet end of Heat source device 1, hot water current divider 5 is provided with multiple diffluence pass, and the port of export of each diffluence pass is provided with by-pass valve.Aperture size by by-pass valve can adjust flux, reaches the object of adjusting temperature.
Preferably, the cooling water inlet of Heat source device 1 is connected with a cyclic water tank 4, cyclic water tank 4 is provided with cold water and adds entrance 4-1 and backwater import 4-2, backwater import 4-2 is connected with water return pipeline, the water inlet of water return pipeline is provided with backwater diffluence device 5', backwater diffluence device 5' is provided with multiple diffluence pass, and the port of export of each diffluence pass is provided with by-pass valve.More preferably, between the backwater import 4-2 of backwater diffluence device 5' and cyclic water tank 4, be provided with circulating pump 6.
In addition, heat supplying pipeline 2 can comprise some heat supply branch roads, on every heat supply branch road, be all provided with heat supply case 8, the two ends of each heat supply case 8 are respectively equipped with import and export, and the entrance point of each heat supply case 8 is connected from the different diffluence pass of hot water current divider 5 respectively, the port of export of each heat supply case 8 is connected from the different diffluence pass of backwater diffluence device 5' respectively.Adopt in this way, can adopt a Heat source device 1 to connect many group radiating subassemblies 3.
For radiating subassembly 3 being arranged on heat supply case 8, can open some connecting holes in a side of each heat supply case 8, the heat absorbing end of the super conduction heat energy pipe 3-1 of radiating subassembly 3 is connected to the connection hole of heat supply case 8.
In the above-described embodiment, Heat source device 1(for example, pot-type boiler) hot water current divider 5 can be connected with bath tube, for bathing provides hot water.Like this, pot-type boiler can be used for bathing, also can be used for heating.
The operation logic of heating plant shown in Fig. 2 is as follows: Heat source device 1 is by temperature of cold water rises to 70 DEG C, open the by-pass valve of hot water current divider 5, hot water is entered in a certain heat supply case 8 of heat supply branch road fully to be contacted with the heat absorbing end of super conduction heat energy pipe, the heat absorbing end of super conduction heat energy pipe heats up rapidly after being heated, and super conduction heat energy pipe is all generated heat; Can continue to move ahead from the outlet of heat supply case 8 hot water is out back to cyclic water tank 4 by next heat supply case 8 or (starting circulating pump 6 in water temperature during lower than 50 DEG C of left and right) by backwater diffluence device 5', after Heat source device 1 heating, and operation again.
In addition, in order to fix better super conduction heat energy pipe 3-1, radiating subassembly 3 can also comprise two fixed head 3-2, and each fixed head 3-2 is provided with some locating holes, and the two ends of each super conduction heat energy pipe 3-1 are located at respectively in the upper corresponding locating hole of two fixed head 3-2.
The bottom of two fixed head 3-2 can connect respectively roller 9(and see (a) and (b) in Fig. 3) so that mobile radiating subassembly 3.Like this, the heat supply case 8 being connected with super conduction heat energy pipe 3-1 also can move thereupon, and heat supply case 8 connects with adopting easily detachable pipeline being connected of Heat source device in heating unit 1, facilitates user that the position of radiating subassembly 3 can be set flexibly according to actual conditions.
In the above-described embodiment, also Heat source device 1, cyclic water tank 4, hot water current divider 5, backwater diffluence device 5' and circulating pump 6 can be located in a casing 7, and connect roller 9 in the bottom of casing 7, like this, user also can arrange heating unit flexibly according to actual conditions.
In the utility model, Heat source device 1 can be connected with radiating subassembly 3 one.Heat source device 1 can comprise for the housing 1-1 of accommodating hot working fluid and supporting heating element heater, and the heat absorbing end of the super conduction heat energy pipe 3-1 of radiating subassembly 3 stretches in the housing 1-1 of Heat source device 1 and directly contacts with hot working fluid.
In the structure being connected with radiating subassembly 3 one at Heat source device 1, the housing 1-1 of Heat source device 1 can be tubbiness, and the heat absorbing end of the super conduction heat energy pipe 3-1 of radiating subassembly 3 can extend in tubbiness housing 1-1 from the top of tubbiness housing 1-1.
In the third detailed description of the invention of the present utility model, there is the hot-water bottle as shown in Figure 4 of structure of the Heat source device 1 of tubbiness housing 1-1.
As shown in Figure 4, the top of tubbiness housing 1-1 can arrange lid 10, and can establish locating hole on lid 10, and the heat absorbing end of each super conduction heat energy pipe 3-1 stretches in the tubbiness housing 1-1 of Heat source device 1 through the locating hole on lid 10.In this structure, lid 10 plays the effect of fixed head.
In the 4th kind of detailed description of the invention of the present utility model, there is the flowerpot type structure (having omitted supporting heating element heater in Fig. 5) as shown in Figure 5 of structure of the Heat source device 1 of tubbiness housing 1-1.
In addition, as shown in Figure 5, the radiating end of super conduction heat energy pipe 3-1 can be made the colored type with decoration functions, to be suitable for different crowd and varying environment.
As shown in Figure 6, in the 5th kind of detailed description of the invention of the present utility model, the housing 1-1 of Heat source device 1 can be U-shaped, and the heat absorbing end of the super conduction heat energy pipe 3-1 of radiating subassembly 3 extend in U-shaped housing 1-1 from the recess of U-shaped housing 1-1 bottom.Described supporting heating element heater comprises the electrical bar 12 being located in U-shaped housing 1-1 recess and the temperature controller 13 being connected with electrical bar 12.In addition, the top of U-shaped housing 1-1 is connected with replenisher tank 14, so that moisturizing.
Under preferable case, radiating subassembly 3 also comprises the fixed head 3-2 of the radiating end that is located at super conduction heat energy pipe 3-1, fixed head 3-2 is provided with locating hole, Heat source device 1 and heating element heater (as the electric heating base 11 in Fig. 4) are located on a support with roller, the outer rim of fixed head 3-2 is connected on the support with roller by pillar, so that mobile whole heating plant.
In the utility model, internet of things sensors can also be set in heating plant, with the circulation of controlling hot working fluid whether or the startup of control and the supporting heating element heater of Heat source device whether, like this concerning working clan, can go out the morning time, close heating plant, evening, heating plant was opened in remote control before leaving offices, realized people and had warmed up this modernization energy-conserving and environment-protective heating system to family, room.
Above-described embodiment just illustrates of the present utility model, and the utility model also can be implemented with other ad hoc fashion or other particular form, and does not depart from main idea of the present utility model or substantive characteristics.Therefore, the embodiment of description from the viewpoint of any all should be considered as illustrative but not determinate.Scope of the present utility model should illustrate by the claim of adding, and anyly also should be included in scope of the present utility model with the intention of claim and the variation of scope equivalence.
Claims (10)
1. a novel environment friendly heating plant, comprise heating unit and the radiating subassembly (3) that is located at heating end, heating unit comprises the Heat source device (1) for hot working fluid is provided, it is characterized in that, described radiating subassembly (3) comprises some super conduction heat energy pipes (3-1), one end of super conduction heat energy pipe (3-1) is heat absorbing end, the other end is radiating end, and the heat absorbing end of super conduction heat energy pipe (3-1) contacts with the hot working fluid of heating unit.
2. a kind of novel environment friendly heating plant according to claim 1, it is characterized in that, Heat source device (1) comprises the housing (1-1) for accommodating hot working fluid, Heat source device (1) is connected with radiating subassembly (3) split by heat supplying pipeline (2) coupled and that form hot working fluid flow cycle, and the heat absorbing end of the super conduction heat energy pipe (3-1) of radiating subassembly (3) extend in heat supplying pipeline (2).
3. a kind of novel environment friendly heating plant according to claim 2, is characterized in that,
In the housing (1-1) of Heat source device (1), be provided with supporting heating element heater, the housing (1-1) of Heat source device (1) is provided with cooling water inlet and hot water outlet, hot water outlet end is provided with hot water current divider (5), and hot water current divider (5) is provided with multiple diffluence pass;
The cooling water inlet of Heat source device (1) is connected with a cyclic water tank (4), cyclic water tank (4) is provided with cold water and adds entrance (4-1) and backwater import (4-2), backwater import (4-2) is connected with water return pipeline, (5') the water inlet of water return pipeline is provided with backwater diffluence device, (5') backwater diffluence device is provided with multiple diffluence pass, and (5') and between the backwater import (4-2) of cyclic water tank (4) backwater diffluence device is provided with circulating pump (6);
Heat supplying pipeline (2) comprises some heat supply branch roads, on every heat supply branch road, be all provided with heat supply case (8), the two ends of each heat supply case (8) are respectively equipped with import and export, and the entrance point of each heat supply case (8) is connected from the different diffluence pass of hot water current divider (5) respectively, the port of export of each heat supply case (8) is connected from backwater diffluence device different diffluence pass (5') respectively;
One side of each heat supply case (8) also has some connecting holes, and the heat absorbing end of the super conduction heat energy pipe (3-1) of radiating subassembly (3) is connected to the connection hole of heat supply case (8).
4. a kind of novel environment friendly heating plant according to claim 3, it is characterized in that, radiating subassembly (3) also comprises two fixed heads (3-2), each fixed head (3-2) is provided with some locating holes, and the two ends of the super conduction heat energy pipe (3-1) of radiating subassembly (3) are located at respectively in the upper corresponding locating hole of two fixed heads (3-2).
5. a kind of novel environment friendly heating plant according to claim 4, is characterized in that, the bottom of two fixed heads (3-2) of radiating subassembly (3) is connected with respectively roller (9).
6. according to claim 3,4,5 arbitrary described a kind of novel environment friendly heating plants, it is characterized in that, Heat source device (1), cyclic water tank (4), hot water current divider (5), backwater diffluence device (5') and circulating pump (6) be located in a casing (7), the bottom of casing (7) is connected with roller (9).
7. a kind of novel environment friendly heating plant according to claim 1, it is characterized in that, Heat source device (1) is connected with radiating subassembly (3) one, Heat source device (1) comprise housing (1-1) for accommodating hot working fluid and with supporting heating element heater, the heat absorbing end of the super conduction heat energy pipe (3-1) of radiating subassembly (3) stretches in the housing (1-1) of Heat source device (1).
8. a kind of novel environment friendly heating plant according to claim 7, it is characterized in that, the housing (1-1) of described Heat source device (1) is tubbiness, and the heat absorbing end of the super conduction heat energy pipe (3-1) of radiating subassembly (3) extend in housing (1-1) from the top of tubbiness housing (1-1).
9. a kind of novel environment friendly heating plant according to claim 7, it is characterized in that, the housing (1-1) of described Heat source device (1) is U-shaped, and the heat absorbing end of the super conduction heat energy pipe (3-1) of radiating subassembly (3) extend in U-shaped housing (1-1) from the recess of U-shaped housing (1-1) bottom; Described supporting heating element heater comprises the electrical bar (12) being located in U-shaped housing (1-1) recess and the temperature controller (13) being connected with electrical bar (12); The top of U-shaped housing (1-1) is connected with replenisher tank (14).
10. a kind of novel environment friendly heating plant according to claim 8 or claim 9, it is characterized in that, radiating subassembly (3) also comprises the fixed head (3-2) of the radiating end that is located at super conduction heat energy pipe (3-1), fixed head (3-2) is provided with locating hole, Heat source device (1) and electrical heating elements are located on a support with roller, and the outer rim of fixed head (3-2) is connected on the support with roller by pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171132.6U CN203928107U (en) | 2014-04-10 | 2014-04-10 | A kind of novel environment friendly heating plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171132.6U CN203928107U (en) | 2014-04-10 | 2014-04-10 | A kind of novel environment friendly heating plant |
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| Publication Number | Publication Date |
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| CN203928107U true CN203928107U (en) | 2014-11-05 |
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| CN201420171132.6U Expired - Fee Related CN203928107U (en) | 2014-04-10 | 2014-04-10 | A kind of novel environment friendly heating plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513746A (en) * | 2019-06-20 | 2019-11-29 | 浙江大学 | A kind of high-efficiency water heater power amplifier |
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2014
- 2014-04-10 CN CN201420171132.6U patent/CN203928107U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513746A (en) * | 2019-06-20 | 2019-11-29 | 浙江大学 | A kind of high-efficiency water heater power amplifier |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |