CN201043791Y - Water heater - Google Patents
Water heater Download PDFInfo
- Publication number
- CN201043791Y CN201043791Y CNU2007200355860U CN200720035586U CN201043791Y CN 201043791 Y CN201043791 Y CN 201043791Y CN U2007200355860 U CNU2007200355860 U CN U2007200355860U CN 200720035586 U CN200720035586 U CN 200720035586U CN 201043791 Y CN201043791 Y CN 201043791Y
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- water
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Abstract
The utility model provides a water heater, which is connected with closed containers distributed at different water outlet points through a fuel gas heating device. The closed container is provided with an electric heating device inside. The heater can realize real-time water use in daily life, large amount of hot water has no requirement to be stored, and frequent starting of the fuel heating device can be avoided. Stored hot water in the closed container, the electric heating device and the fuel heating device are united for use and then hot water supply cannot be interrupted. When in bathing, with unification of the stored hot water in the closed container, the electric heating device and the fuel heating device, improving and maintaining of indoor temperature can be realized and hot water can be generated for bathing. The utility model meets the requirement of bathing and warming along bathing when single service energy power cannot meet simultaneously large requirement for power; the utility model realizes real-time hot water supply and avoids cold water discharging before using hot water; compared with the volumn-typed water heater, the utility model avoids energy waste due to storage of large amount of hot water when needs to meet the requirement of the use of large amount of hot water; the utility model can use energy with low price in priority to reduce use cost of user. Even if one of energy is short of supply, the other energy can realize part of functions and supportability of hot water use can be increased.
Description
Technical field
The utility model relates to indoor bathing, heating and hot water, uses this hot water gas to have the needs of warming oneself when the energy satisfies bathing and bathing in the concentration chamber to greatest extent, and accomplishes to have opened when using hot water at ordinary times.
Background technology
At present, the solution of known family bathing normally adopts gas heater or electric heater, and warm oneself when adopting super bath or warm-air drier to be used for bathing usually in the toilet, use gas heater separately because gas heater needs a period of time from starting to the outflow of steady heat water, wash one's face and wash one's hands etc. a little use of hot water amount's demand for family, inconvenience and the waste that shows is bigger.Use electric heater separately because the electric power restriction is generally heat accumulating type, need preserve hot water in advance, each water consumption is limited.Required energy consumption is many more during big more preservations of the hot water amount who preserves, and the cost with electrical heating water is higher than the cost that adds hot water with combustion gas simultaneously, and these two kinds of water heaters all can not be used for warming oneself.Because the heating mode that adopts during the common bathing of household electricity Power Limitation is the super bath or the warm-air drier that can only carry out local heat, and super bath add thermal effect normally the bathing people above the waist the hot lower part of the body is cold, shower is finished and is left the radiation scope super bath with inoperative, and warm-air drier also has only usually and directly warm braw is blown to the people that just can make bathing on the human body and feel warmness, and promptly this dual mode bulk temperature that can't promote the bathing space causes the uncomfortable of bathing.
Summary of the invention
Existing water heater adds super bath or warm-air drier solves the poor effect that the domestic hot water uses and bathing is warmed oneself in order to overcome, the utility model provides a kind of water heater not only can make hot water and open promptly to be had, and the existing energy in the house can be concentrated and call the requirement of warming oneself when satisfying bathing and bathing.
Water heater described in the utility model comprises gas-operated thermal bath facility (can be gas heater), closed container (can be electric heater), closed container is connected with gas-operated thermal bath facility by circulating water pipe, on circulating water pipe, be provided with water circulating pump and control valve, in closed container, can be provided with electric heater unit, and temperature measuring equipment, radiator is housed on circulating water pipe.The course of work is: (be used to receive temperature, the device that the signal of current etc. is controlled valve, heater, water pump etc. at controller when needs are had a bath.) on provide the instruction of having a bath (this moment controller detect in indoor temperature and the closed container water temperature such as room temperature do not reach to have a bath require in temperature and the closed container temperature not exceed gas-operated thermal bath facility can to add heat request) start water pump, current begin circulation, gas-operated thermal bath facility starts, current are through radiator and closed container, after room temperature reaches requirement, gas-operated thermal bath facility is isolated circulation line, the hot water that produces is used to have a bath, following being reduced to of indoor temperature requires temperature in the process of having a bath, the starting mode of pump current utilize the heat that electric heater unit (installing as inside) produces in interior hot water that stores of closed container and the closed container to keep indoor temperature by the heat that heat sink radiates goes out through radiator and closed container.(promptly in this process, concentrate simultaneously discharged indoor fuel gas, electricity and before the hot water energy saved satisfied required hot water when having a bath and indoor temperature reached the requirement of having a bath.The thermal source that promotes and keep indoor temperature is respectively that gas-operated thermal bath facility flows out the interior electric heater unit of hot water, closed container, the interior hot water of closed container that is used to have a bath.)。Be provided with delivery port on closed container top, closed container is positioned at the (as: washbasin with the water spot place, vegetable sink down or near), opening the hot water that valve is positioned at closed container top when using hot water flows out, temperature measuring equipment detects temperature decline and starts electric heater unit (as the burner heater is housed) and water pump, the burner heater, water in the heating closed container (start electric heater unit usually earlier and when electric heater unit can not meet the demands, restart water pump and use gas-operated thermal bath facility having under the situation of electric heater unit, at ordinary times not during water when insulation and a small amount of water the use electric heater unit to avoid the frequent starting of gas combustion apparatus.Thereby) because being contained in the EXIT POINT place, closed container guarantees that hot water promptly opens promptly and have.Again since in the closed container water can use the combustion gas heating and thereby the combustion gas heating power makes greatly and needn't hold a large amount of hot water in the closed container and also can guarantee needs with a large amount of hot water of water spot.
The beneficial effects of the utility model be in the time of under entering can the source power lower situation in house, can making bathing indoor temperature rise to when having a bath temperature required and make and use hot water to have opened at ordinary times, thereby do not need to satisfy the water demand energy efficient by storing a large amount of hot water.
Description of drawings
Fig. 1 is the schematic diagram of embodiment 1;
Fig. 2 is the schematic diagram of embodiment 2;
Fig. 3 is the schematic diagram of embodiment 3;
Fig. 4 is the schematic diagram of embodiment 4;
Fig. 5 is the schematic diagram of embodiment 5;
Fig. 6 is the schematic diagram of embodiment 6;
Fig. 7 is the schematic diagram of embodiment 7;
Fig. 8 is the schematic diagram of embodiment 8;
Fig. 9 is the schematic diagram of embodiment 9;
Figure 10 is the schematic diagram of embodiment 10;
Figure 11 is the schematic diagram of embodiment 11;
1. gas-operated thermal bath facilities among the figure, 2,3. closed container, 4. radiator, 5. circulating water pipe, 6. water pump, 7,8,9,10. control valve, 11,12. unidirectional relief valve, 13,14,15,16. the intake-outlet pipe, 17,18. the delivery port pipe, 19,20. electric heater unit, 21,22,23,24. temperature measuring equipment, 25,26,27. valve, 28. outlet pipes, 29. water inlet pipes, 30,31. intake-outlet pipe, 32,33. exit branch, 34,35. two-way valve, 36. water flow indicators, 37. unidirectional relief valve 38,39,40,41,42,43,44,45. check valve, 46,47,48. two-way valve, 49,50,51,52,53,54. bypass circulation, 55. anti-spoilers.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Gas-operated thermal bath facility 1 shown in Figure 1, closed container 2,3 radiators 4 are installed on indoor different position respectively, and (for example: gas-operated thermal bath facility 1 is installed on the kitchen, and closed container 2,3 is installed on respectively to be washed under dish and the toilet washing basin.) respectively they are coupled together by circulating water pipe 5.Water circulating pump 6 is installed on the circulating water pipe 5 and can make circulating water flow without gas-operated thermal bath facility 1 by bypass circulation 49 or cut off the control valve 7 of circulating water flow and prevent that when control valve 7 makes circulating water flow without gas-operated thermal bath facility 1 circulating water flow from flowing into outlet pipe 28 and preventing the check valve relief valve 12 of water heater superpressure.
The intake- outlet pipe 13,14,15,16 that gos deep into the closed container bottom is installed on closed container 2,3, reach delivery port pipe 17,18 on closed container 2,3 tops, the circulation intake-outlet pipe of installing in closed container 2,3 13,14,15,16 is respectively in order to make circulating water flow not disturbance closed container 2,3 top hot water through water in the gas-operated thermal bath facility 1 heating closed container 2,3 and when replenishing cold water, so that more stable from the hot water of delivery port pipe 17,18 outflows to the closed container bottom.
Be provided with bypass circulation 50,51 and control valve 8,9 is housed at intake- outlet pipe 13,14 and 17,18 of effluent pipe mouth pipes.Thereby purpose is can to select when having a bath to make existing hot water in the closed container can be used as that bath temperature improves and one of the thermal source kept from delivery port pipe 17,18 Inlet and outlet waters on closed container 2,3 tops.
Be equipped with in closed container 2,3 that electric heater unit 19,20 can be used for the heating of water and temperature keeps (can making a small amount of frequent water not start gas-operated thermal bath facility, and can also can when stopping the supple of gas or steam, still can keep certain hot water supply certainly) as one of thermal source that keeps temperature in the bathroom when bathing.
Differing heights is installed temperature measuring equipment the 21,22,23, the 24th in closed container 2,3, arrives the information of diverse location so that control device determines that starting electric heater unit 19,20 still is gas-operated thermal bath facility 1 in order to obtain cold water.
On water inlet, be equipped with and prevent that aqueous reflux from going into the one-way pressure relief valve 11 of water inlet pipe 29.
The water expanded by heating exceeds when unidirectional relief valve 11,12 sets value and can overflow from unidirectional relief valve 11 or 12 in the water heater.
25,26,27 valves that are respectively delivery port.
Be that two closed containers are respectively 2,3 reality and can be provided with 1 as required to a plurality of shown in the embodiment.The course of work of present embodiment is:
When opening with penstock 25 or 26, hot water flows out, this moment, water replenished from water inlet pipe 29, when detecting, the temperature measuring equipment 21 or 22 that is positioned at the bottom starts electric heater unit 19 or 20 heating when temperature reduces, continue as water, the temperature measuring equipment 23 or 24 that is positioned at temperature measuring equipment 21 or 22 tops will detect temperature to be reduced, start water pump 6 and gas-operated thermal bath facility 1 (gas-operated thermal bath facility 1 can be the various forms gas heater), water in closed container 2 or 3 is heated (control valve 10 placed and made the position of circulating water flow without radiator 4 this moment), arrive stop after the temperature gas-operated thermal bath facility 1 and electric heater unit 19 or 20 (but must confirm that the current temperature be in gas-operated thermal bath facility 1 heated perimeter by temperature measuring equipment 23 or 24 when starting gas-operated thermal bath facility 1, but as be not in can by start earlier water pump 6 make cold water enter closed container 2 or be mixed to heating-up temperature after restart gas-operated thermal bath facility 1).Since recirculated water only through closed container 2,3 bottoms so can not disturbance top hot water, closed container 2,3 upper water obtain heating by the hot and cold water Natural Circulation.
When temperature decline at ordinary times, start electric heater unit 19 or 20 and keep temperature (can start the temperature of the temperature setting of electric heater unit 19 or 20) a little less than startup gas-operated thermal bath facility 1.
When having a bath, not enough as indoor temperature, and closed container 2, temperature is above starting gas-operated thermal bath facility 1 heatable water temperature in 3, this moment is with control valve 7, and control valve 10 places the position that can make circulating water flow pass through gas-operated thermal bath facility 1 and radiator 4, start water pump 6 and gas-operated thermal bath facility 1 this moment by radiator 4 heating indoor temperatures, as circulating water temperature occurs and exceed combustion gas heating transposition 1 and can heat the work that water temperature then stops gas-operated thermal bath facility 1, and control valve 7 can be placed and to make the position of circulating water flow without gas-operated thermal bath facility 1, water pump 6 works on, start gas-operated thermal bath facility 1 heating when temperature drops to when gas-operated thermal bath facility 1 is set start-up temperature, reach requirement until indoor temperature so repeatedly.
After indoor temperature reached requirement, control valve 7 placed and made circulating water flow without the position of gas-operated thermal bath facility 1 by bypass circulation 49 this moment.Can open valve 27 and have a bath this moment.Decline then starts water pump 6 as indoor temperature in the process of having a bath, and allows circulating water flow pass through radiator 4, stops water pump 6 after indoor temperature reaches.Water temperature descends and then starts electric heater unit 19,20 in the closed container 2,3 in this process, and water temperature continues to descend then control valve 8,9 to be placed and can make circulating water flow take closed container 2,3 interior all hot water (also can not wait water temperature to descend to just control valve 8,9 being placed and can make the position of circulating water flow from outlet pipe 17,18 processes) from delivery port pipe 17,18 processes.Until the end of having a bath.
Also can increase bypass circulation and control valve 13,15 or 14,16 of the intake-outlet pipes on the closed container 2,3, the closed container that does not need circulating water flow to pass through is isolated, circulating water flow is passed through by bypass circulation (in the drawings indicate), and the gas-operated thermal bath facility closed container inner cold water that can only heat need heats and needn't pass through other closed container like this.
Embodiment 2
Embodiment illustrated in fig. 2 and embodiment 1 difference has been to cancel control valve 8,9 and the bypass circulation 50,51 among Fig. 1 and has reduced the use of control valve, but can not take whole hot water in the closed container 2,3.Still the embodiment with embodiment 1 is identical for all the other.
Differently shown in Fig. 3 be the superposed intake- outlet pipe 30,31 that is equipped with on the closed container 2,3, cancelled delivery port pipe 17,18, exit branch 32,33 is installed on intake- outlet pipe 30,31 with embodiment 1. Temperature measuring equipment 23,24 is carried to closed container top (also can be installed on the intake- outlet pipe 30,31 or on the exit branch 32,33)
At ordinary times control valve 7 is placed and make the current that enter from water inlet pipe 29 flow into and not flow into from illustrating unidirectional relief valve 12 place side circulating water pipes only from diagram water pump 6 place side circulating water pipes, to guarantee to open valve 25,26 water when exit branch 32,33 flows out, supplementing water enters from the intake- outlet pipe 15,16 that is positioned at closed container 2,3 bottoms.
Closed container 2 water outlets when opening valve 25, cold water will enter closed container 3, and hot water in the closed container 3 is headed into closed container 2 by intake-outlet pipe 31.When entering to temperature measuring equipment 22, cold water can start electric heater unit 20, to closed container 2, can start electric heater unit 19 during temperature measuring equipment 21, control valve 7 placed during until cold water and can make the position of circulating water flow, starting water pump 6 and gas-operated thermal bath facility 1 heating through gas-operated thermal bath facility 1 to temperature measuring equipment 23.
When cold water is to temperature measuring equipment 24 when opening valve 25, also can start water pump 6 at this moment mixes hot and cold waters in the closed container 2,3 to be reduced to until temperature and can start gas-operated thermal bath facility 1 or cold water is transferred to closed container 2 (detect determine that cold water is modulated to closed container 2 by temperature measuring equipment 23), place the position that can make circulating water flow process gas-operated thermal bath facility 1 to start gas-operated thermal bath facility 1 heating control valve 7, stop heating (can detect) by temperature measuring equipment 23 to setting temperature.
Situation is with to open valve 25 similar when opening valve 26, difference is, when hot water uses up in the closed container 3 (temperature measuring equipment 24 detects temperature reduction expression cold water and arrived this position), start water pump 6 this moment, as outflow is cold water, this moment, the user can close valve 26, and water pump 6 is called in closed container 3 with hot water in the closed container 2, notified the user to have hot water to use when temperature measuring equipment 24 detects to call to finish when temperature rises.Realize different shared with water spot hot water with this.
When bathing, do not allow to start gas-operated thermal bath facility 1 as temperature in this moment closed container 2,3, then start water pump 6, circulating water flow improves indoor temperature through radiator 4, when temperature in the closed container 2,3 reaches can use gas-operated thermal bath facility 1 time, control valve 7 is placed the position that can make circulating water flow pass through gas-operated thermal bath facility 1, start gas-operated thermal bath facility 1 flow heated water.Flow through radiator 4 of current improves indoor temperatures.When indoor temperature reaches control valve 7 placed to make current, can open valve 27 have a bath (can be provided with alerting signal) this moment without gas-operated thermal bath facility 1.Water pump stops.
When indoor temperature reduces, start water pump 6 circulating water flows and improve indoor temperature, stop water pump when indoor temperature reaches by radiator 4.
4 difference from Example 3 embodiment illustrated in fig. 4 are at closed container 2 intake-outlet pipes 30 and intake-outlet pipe 15, closed container 3 intake- outlet pipes 31 and 16 of intake-outlet pipes are provided with bypass circulation 53,54 and control valve 8,9 are housed, effect is can utilize control valve that other closed container is isolated closed circuit when hot water uses up in arbitrary closed container, starts gas-operated thermal bath facility the closed container inner cold water is heated.For example shown in Figure 4 control valve 8 can being placed when hot water uses up in the closed container 3 makes circulating water flow without closed container 2, control valve 7 placed circulating water flow is heated through 1 pair of closed container 3 inner cold water of gas-operated thermal bath facility.When hot water use up in the closed container 2 herewith.Make water outlet can carry out simultaneously in different closed containers with heating, the hot water supply continues or has only the variations in temperature of short time when guaranteeing a large amount of water.
Also can be in closed container begin the heating of closed container inner cold water during entering part cold water, only need this moment temperature measuring equipment installation site among the figure adjusted in corresponding position and get final product.Before heating, utilize water pump that but water temperature is adjusted to heating-up temperature.
Two-way valve 34 is in open mode at ordinary times, control valve 7 place the position that makes circulating water flow can't enter gas-operated thermal bath facility 1 (even supplementing water only from shown in the figure in circulating water pipe 5 a clockwise direction enter), two-way valve 35 is in closed condition, closed container 2 water outlets when opening valve 25, the water that enters from water inlet pipe 29 will enter closed container 3 by circulating water pipe 5, airtight 3 interior hot water be ejected enter hot water in the closed container 2 benefit closed containers 2.
Hot water flows out in the closed container 3 when opening valve 26, water flow indicator 33 actions provide closed container 3 at the water signal, and close valve 34 this moment, opens valve 35 makeup water stream and enter from intake-outlet pipe 15, eject in the closed container 2 hot water and enter airtightly 3, replenish hot water in the closed container 3.This moment, control valve 10 should make current not by radiator 4.
(EXIT POINT increase) need be installed two-way valve and unidirectional relief valve and water flow indicator equally in the relevant position when closed container increases, open and close the two-way valve of relevant position, adjust the moisturizing position, hot water in other position closed container can be headed in the desired closed container.Realization is called hot water unification in all closed containers.
What this embodiment adopted the perception of water closed container water outlet is water flow indicator 36, also can adopt alternate manner as utilizing temperature measuring equipment 21,22 perception of bottom, (promptly supplementing water will cause water outlet closed container bottom water temperature to descend or not change as not changing hot water in makeup water stream is from other closed container then is described when the water outlet of water point, change then explanation directly from water inlet pipe, the water inlet position that change this moment on circulating water pipe 5 gets final product). Temperature measuring equipment 23,24 is loaded on the variation that utilizes water temperature on intake- outlet pipe 30,31 or the exit branch 32,33 determines it is that closed container 2 or 3 is in water outlet.
Temperature measuring equipment and water flow indicator can be a composite set and have thermometric and current deixis.
7,8,9,10 functions of control valve shown in the figure can be realized by single valve, also can be realized by a plurality of valve combination.
Unidirectional relief valve shown in the figure has makes water one-way flow and superpressure open the function of letting out except that pressure.
When opening valve 25, current enter from closed container 3 upper intake pipes 16 by control valve 10, are positioned at the check valve 44 of bottom, the superposed check valve 42 of water inlet by delivery port, delivery port is positioned at the check valve 40 of bottom, and the superposed check valve 38 of water inlet flows out.Hot water in the closed container 3 is headed into water heater 2.
When opening valve 26, hot water flows out in the closed container 3, (can be detected) position of adjusting control valve 7 and 10 when hot water uses up in the closed container 3 by temperature measuring equipment 24, current enter from closed container 2 upper intake pipes 30 by control valve 7, flow out from valve 26 by check valve 39,41.
Also valve 26 and exit branch 33 can be installed on the intake-outlet pipe 16, on exit branch 33, install water flow indicator (but or other perception valve 26 device of opening water outlet as with the switch of valve interlock), water flows out when opening valve, and the position current of adjusting control valve 7 and 10 will flow into through check valve 39,41,43,45 from control valve 7 and flow out from valve 26.Hot water in the closed container 2 is headed into water heater 3.Avoided the short interruption in the hot water supply, shortcoming is that the position because of need adjustment valve 7,10 has some time-delay when opening valve 26.
Also valve 25 and exit branch 32 can be installed on the intake-outlet pipe 15, be equipped with on the exit branch therein water flow indicator (but or other perception valve 26 device of opening water outlet as with the switch of valve interlock), process and aforementioned similar.
When opening valve 25, makeup water stream flows out from valve 25 by intake-outlet pipe 16, intake-outlet pipe 31, control valve 8, bypass circulation 53, intake-outlet pipe 15, intake-outlet pipe 30.
Current flow out from 26 when opening valve 26, supplementing water flows into from intake-outlet pipe 16, temperature measuring equipment 22 perception cold water flow into, adjust control valve 7,10,8,9, adjust current and enter through intake-outlet pipe 30, control valve 8, control valve 9, bypass circulation 54, intake-outlet pipe 16, intake-outlet pipe 31 from valve 26 outflows from intake-outlet pipe 15.
Electric heater unit all has been installed in closed container in the above example, also electric heater unit can be installed, when in closed container, electric heater unit not being installed, when temperature is reduced to certain limit in the closed container, start gas-operated thermal bath facility and water pump to closed container in the water heat tracing.Startup water pump and gas-operated thermal bath facility heat the closed container inner cold water when cold water enters into the closed container certain position.Shortcoming be need be more ordinary startup gas heater and temperature-controlled precision not high, when bathing is warmed oneself, lacked electrically heated thermal source.
Electric heater unit and temperature measuring equipment are installed on water heater inside shown in the above example, and actual electrical heater form has various and various ways also is not limited to be installed on closed container inside, only are a kind of form wherein shown in the figure.
The realization of control procedure will not finished by controller (specifically drawing in the accompanying drawings) among the above embodiment, the measuring-signal of water temperature, current, cold water position, indoor temperature is delivered in the controller, set the control corresponding process in the control gas-operated thermal bath facility, control valve, water pump, electric heater unit etc. are controlled, different waters and heating requirement can be set on controller.
The quantity of closed container is 1 to a plurality of among the above embodiment.
Claims (11)
1. water heater, it is characterized in that: gas-operated thermal bath facility links to each other with the closed container that is distributed in diverse location with water pump by pipeline.
2. according to the described water heater of claim 1, it is characterized in that: closed container is positioned at different EXIT POINTs.
3. according to the described water heater of claim 1, it is characterized in that: between gas-operated thermal bath facility and circulating water pipe, be provided with the bypass circulation that gas-operated thermal bath facility can be inserted or isolates.
4. according to the described water heater of claim 1, it is characterized in that: in closed container, be provided with two intake-outlet pipe and delivery port pipes that are positioned at closed container top that are positioned at the closed container bottom.
5. according to claim 1 described water heater, it is characterized in that: in closed container, be provided with an intake-outlet pipe and an intake-outlet pipe that is positioned at closed container top that is positioned at the closed container bottom.
6. according to claim 1 or 4 described water heaters, it is characterized in that: between closed container intake-outlet pipe and delivery port pipe, be provided with bypass circulation.
7. according to claim 1 or 5 described water heaters, it is characterized in that: at the superposed intake-outlet pipe of closed container be positioned between the intake-outlet pipe of bottom and be provided with bypass circulation.
8. according to claim 1 or 5 described water heaters, it is characterized in that: on the circulating water pipe between different closed containers, be provided with water inlet pipe.
9. according to claim 1 or 5 described water heaters, it is characterized in that: on the intake-outlet pipe of closed container, be provided with the check valve of fetching water from closed container top and sending water to the closed container bottom.
10. according to claim 1 described water heater, it is characterized in that: electric heater unit is housed in closed container.
11. according to claim 1 described water heater, it is characterized in that: the temperature measuring equipment of measuring closed container temperature and cold water in-position is equipped with at diverse location or delivery port place respectively on closed container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200355860U CN201043791Y (en) | 2007-04-02 | 2007-04-02 | Water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200355860U CN201043791Y (en) | 2007-04-02 | 2007-04-02 | Water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043791Y true CN201043791Y (en) | 2008-04-02 |
Family
ID=39258685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200355860U Expired - Fee Related CN201043791Y (en) | 2007-04-02 | 2007-04-02 | Water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201043791Y (en) |
-
2007
- 2007-04-02 CN CNU2007200355860U patent/CN201043791Y/en not_active Expired - Fee Related
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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: 20080402 Termination date: 20100402 |