CN205957490U - Gas hot -water heating equipment freeze -proof device and adoption device's gas hot -water heating equipment - Google Patents
Gas hot -water heating equipment freeze -proof device and adoption device's gas hot -water heating equipment Download PDFInfo
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- CN205957490U CN205957490U CN201620970564.2U CN201620970564U CN205957490U CN 205957490 U CN205957490 U CN 205957490U CN 201620970564 U CN201620970564 U CN 201620970564U CN 205957490 U CN205957490 U CN 205957490U
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Abstract
The utility model provides a gas hot -water heating equipment freeze -proof device and adoption device's gas hot -water heating equipment belongs to the gas appliance field, include the cold water inlet tube, heat exchange line and the hot water outlet pipe that connect gradually through the pipeline. The one end of cold water inlet tube is provided with the cold water water intaking valve, and the one end of hot water outlet pipe is provided with the hot water outlet valve. The pipe wall of cold water inlet tube with all be provided with incomplete water branch pipe on the pipe wall of hot water outlet pipe, be provided with first valve on the incomplete water branch pipe of cold water inlet tube, be provided with the second valve on the incomplete water branch pipe of hot water outlet pipe. The utility model provides a gas hot -water heating equipment freeze -proof device makes the pipeline can not be because of the spalling of freezing of enduring cold of the incomplete water in inside, therefore makes the gas hot -water heating equipment can be freeze proof to the mountable has improved application safety factor in outdoor, more safe and reliable.
Description
Technical field
This utility model is related to gas appliance field, in particular to a kind of gas and hot water heating equipment defroster
And the gas and hot water heating equipment using this device.
Background technology
Gas and hot water heating equipment refers to, using combustion gas as fuel, transfer heat to flow through heat by combustion heating mode
The cold water of exchanger is thus prepare hot water, or the heat of burning gained is used for the gas appliance heating.Gas and hot water heats
Equipment includes gas heater, burnt gas wall hanging furnace, gas heating stove, gas heating equipment etc..
But, the not freeze proof problem of existing gas and hot water heating equipment generally existing, thus lead to equipment fragile, very
To generation security incident., in north of China cold districts taking gas heater as a example, gas heater due to not freeze proof must
Must install indoors, and smoke pipe passes to outdoor, and the situation that cold wind is poured in down a chimney by smoke pipe often occurs, and so that the water in pipeline is tied
Ice expands and causes freezing accident, leads to a large amount of water to leak in doors, causes any property loss；And gas heater is not due to freeze proof
It is necessarily mounted at interior, there is potential safety hazard, happen occasionally carbon monoxide poisoning.
Utility model content
This utility model provides a kind of gas and hot water heating equipment defroster and supplies it is intended to improve existing gas and hot water
Heating equipment is not antifreeze thorough, is susceptible to the problem of frost crack pipe accident.
This utility model is realized in：
A kind of gas and hot water heating equipment defroster, including the cold water inlet being sequentially connected by pipeline, heat exchanger tube
Road and hot water outlet pipe；
Described cold water inlet is provided with cold water water intaking valve away from one end of described heat exchanging pipe, and described hot water outlet pipe is remote
One end of described heat exchanging pipe is provided with hot water effluent's valve；
Back water arm, described cold water are provided with the tube wall of the tube wall of described cold water inlet and described hot water outlet pipe
First valve is provided with the back water arm of water inlet pipe, the back water arm of described hot water outlet pipe is provided with the second valve.
Further, the two ends of described heat exchanging pipe are connected with described cold water inlet, described hot water outlet pipe respectively, institute
Stating heat exchanging pipe is that higher end is low or the high two ends in middle part are low.
By being set to described heat exchanging pipe, higher end is low or the high two ends in middle part are low, makes in described heat exchanging pipe
The water energy of residual is enough to flow to described cold water inlet or described hot water outlet pipe under self gravitation effect, and eventually through institute
State the first valve or described second valve is discharged.
Further, described cold water water intaking valve, described hot water effluent's valve, described first valve and described second valve are equal
For mechanical type manual valve.
By using mechanical type manual valve, manually controllable described cold water water intaking valve, described hot water effluent's valve, described
One valve and the opening and closing of described second valve, flexible operation is autonomous.
Further, described cold water water intaking valve, described hot water effluent's valve, described first valve and described second valve are equal
For electromagnetic valve, described cold water water intaking valve, described hot water effluent's valve, described first valve and described second valve are all and controller
Connect.
Using electromagnetic valve, by described controller can control described cold water water intaking valve, described hot water effluent's valve, described first
Valve and the opening and closing of described second valve, precise control is quick.
Further, also include guidance panel, described guidance panel is provided with control knob, described control knob passes through
Control circuit is connected with described controller.
By arranging described guidance panel, and described control knob is arranged on described control panel, described by pressing
Control knob, controls described cold water water intaking valve, described hot water effluent's valve, described first valve and described the by described controller
The opening and closing of two valves, simple to operate, convenient and swift.
A kind of gas and hot water heating equipment, including any of the above-described gas and hot water heating equipment defroster.
Further, antifreeze temperature controller and heating and anti-freezing protection device are also included, for carrying out to the water in described pipeline
The heater of heating.By arranging described antifreeze temperature controller, the temperature of described pipeline, and the temperature in described pipeline can be detected
When degree is less than preset temperature, described heater work, the water in described pipeline is heated, it is to avoid the water in described pipeline
The too low icing of temperature, leads to described pipeline spalling, makes gas and hot water heating equipment antifreeze further.
Further, described antifreeze temperature controller is provided with multiple temperature acquisition points, and multiple described temperature acquisition points set respectively
It is placed in the diverse location of described pipeline outer wall.
Temperature due to described pipeline diverse location is likely to occur difference, by arranging multiple described temperature acquisition points, point
Do not gather the temperature of described pipeline diverse location, as long as the temperature of the wherein described temperature acquisition point of predetermined number is less than default temperature
Degree, then make described heater work, improves sensitivity and the accuracy that described antifreeze temperature controller controls.
This utility model provides a kind of gas and hot water heating equipment defroster, this antifreeze dress of gas and hot water heating equipment
Put including the cold water inlet being sequentially connected by pipeline, heat exchanging pipe and hot water outlet pipe.Cold water inlet is away from heat exchange
One end of pipeline is provided with cold water water intaking valve, and hot water outlet pipe is provided with hot water effluent's valve away from one end of heat exchanging pipe.Back water
Arm, the back water arm of cold water inlet is provided with the first valve, the back water arm of hot water outlet pipe is provided with the second valve
Door.
During using this gas and hot water heating equipment defroster, it is in off working state in gas and hot water heating equipment
When, cold water water intaking valve and hot water effluent's valve are closed, and the first valve and the second valve are opened, the water in pipeline is along cold water
Back water arm on water inlet pipe and hot water outlet pipe flows out from the first valve and the second valve.
When gas and hot water heating equipment works, close the first valve and the second valve, then open cold water water intaking valve and
Hot water effluent's valve, enables gas and hot water heating equipment normal work.Using after terminating, first close cold water water intaking valve and hot water
Outlet valve, then open the first valve and the second valve, you can so that remaining water in pipeline is discharged.
The beneficial effect of gas and hot water heating equipment defroster that this utility model provides is：Due to remaining in pipeline
Water can be discharged by the first valve and the second valve, it is to avoid back water in pipeline, so that pipeline will not be freezed because of internal back water
Ice and spalling, so that gas and hot water heating equipment can be freeze proof, reduce property loss, and are mountable to outdoor, carry
High use safety coefficient, more safe and reliable.
Brief description
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to use required in embodiment
Accompanying drawing be briefly described it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other related accompanying drawings according to these accompanying drawings.
The structural representation of the gas and hot water heating equipment defroster that Fig. 1 provides for this utility model embodiment 1；
The structural representation of the gas and hot water heating equipment defroster that Fig. 2 provides for this utility model embodiment 2；
The heat exchanging pipe one end of the gas and hot water heating equipment defroster that Fig. 3 provides for this utility model embodiment 2 is high
Structural representation when one end is low；
The structural representation of the gas and hot water heating equipment that Fig. 4 provides for this utility model embodiment 3.
Reference collects：
Cold water inlet 101；Hot water outlet pipe 102；Heat exchanging pipe 103；Pipeline 104；Cold water water intaking valve 105；Hot water goes out
Water valve 106；First valve 107；Second valve 108；Controller 109；Guidance panel 110；Control knob 111；
Gas and hot water heating equipment 201；Antifreeze temperature controller 202；Temperature acquisition point 203；Heating and anti-freezing protection device 204.
Specific embodiment
Gas and hot water heating equipment refers to, using combustion gas as fuel, transfer heat to flow through heat by combustion heating mode
The cold water of exchanger is thus prepare hot water, or the heat of burning gained is used for the gas appliance heating.Gas and hot water heats
Equipment includes gas heater, burnt gas wall hanging furnace, gas heating stove, gas heating equipment etc..
Inventor of the present utility model finds under study for action, and existing gas and hot water heating equipment generally existing is not freeze proof
, thus leading to equipment fragile, or even there is security incident in problem., cold in north of China winter taking gas heater as a example
Area, gas heater is necessarily mounted at interior due to not freeze proof, and smoke pipe passes to outdoor, often occurs cold wind to pass through cigarette
The situation that pipe pours in down a chimney, makes the water freezing in pipeline expand and cause freezing accident, leads to a large amount of water to leak in doors, causes property to damage
Lose；And gas heater is necessarily mounted at interior due to not freeze proof, there is potential safety hazard, and happen occasionally carbon monoxide poisoning.
In consideration of it, inventor of the present utility model devises a kind of gas and hot water heating equipment defroster, enter in cold water
Water pipe 101 arranges cold water water intaking valve 105 away from one end of heat exchanging pipe 103, and hot water outlet pipe 102 is away from heat exchanging pipe 103
It is respectively provided with back water arm on one end setting hot water effluent's valve 106, and the tube wall of the tube wall in cold water inlet and hot water outlet pipe,
First valve 107 is arranged on the back water arm of cold water inlet 101, the back water arm of hot water outlet pipe 102 arranges second
Valve 108.The water energy of residual in pipeline is made enough to discharge by the first valve 107 and the second valve 108, it is to avoid to occur residual in pipeline
Water, makes pipeline will not endure cold because of internal back water and freezes and spalling, so that gas and hot water heating equipment 201 can be freeze proof, fall
Low property loss, and it is mountable to outdoor, improve and use safety coefficient, more safe and reliable.
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described it is clear that being retouched to the technical scheme in this utility model embodiment
The embodiment stated is a part of embodiment of this utility model, rather than whole embodiments.Generally described in accompanying drawing herein and
The assembly of this utility model embodiment illustrating can be arranged with various different configurations and design.Therefore, below to attached
The detailed description of the embodiment of the present utility model that in figure provides is not intended to limit claimed scope of the present utility model,
But it is merely representative of selected embodiment of the present utility model.Based on the embodiment in this utility model, ordinary skill people
The every other embodiment that member is obtained under the premise of not making creative work, broadly falls into the model of this utility model protection
Enclose.
Embodiment 1
The structural representation of the gas and hot water heating equipment defroster that Fig. 1 provides for this utility model embodiment 1；Please join
Read Fig. 1, this utility model embodiment 1 provides a kind of gas and hot water heating equipment defroster, this gas and hot water heating equipment
Defroster includes cold water inlet 101, heat exchanging pipe 103 and the hot water outlet pipe 102 being sequentially connected by pipeline 104.
Cold water inlet 101 is provided with cold water water intaking valve 105 away from one end of heat exchanging pipe 103, and hot water outlet pipe 102 is away from heat exchanger tube
The one end on road 103 is provided with hot water effluent's valve 106.The tube wall of the tube wall of cold water inlet 101 and hot water outlet pipe 102 or with
It is provided with back water arm on its tee T connecting, the back water arm of cold water inlet 101 is provided with the first valve 107,
Second valve 108 is provided with the back water arm of hot water outlet pipe 102.
Cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107 and the second valve 108 can be Split type structure,
Whole body structure, manually-operated gate, automatic valve or its arbitrarily combine.
During using this gas and hot water heating equipment defroster, it is in inoperative shape in gas and hot water heating equipment 201
During state, cold water water intaking valve 105 and hot water effluent's valve 106 are closed, the first valve 107 and the second valve 108 are opened, in pipeline
Water flows along the back water arm on cold water inlet 101 and hot water outlet pipe 102 from the first valve 107 and the second valve 108
Go out.
When gas and hot water heating equipment 201 works, close the first valve 107 and the second valve 108, then open cold water
Water intaking valve 105 and hot water effluent's valve 106, enable gas and hot water heating equipment 201 normal work.Using after terminating, first close
Close cold water water intaking valve 105 and hot water effluent's valve 106, then open the first valve 107 and the second valve 108, you can make surplus in pipeline
Remaining water is discharged.
The gas and hot water heating equipment defroster that the present embodiment provides can pass through the first valve due to water remaining in pipeline
Door 107 and the second valve 108 are discharged, it is to avoid back water in pipeline, so that pipeline will not be endured cold because of internal back water and freeze and spalling,
So that gas and hot water heating equipment 201 can be freeze proof, reduce property loss, and be mountable to outdoor, improve and make
With safety coefficient, more safe and reliable.
Embodiment 2
The structural representation of the gas and hot water heating equipment defroster that Fig. 2 provides for this utility model embodiment 2；Please join
Read Fig. 2, this utility model embodiment 2 provides a kind of gas and hot water heating equipment defroster, this gas and hot water heating equipment
Defroster comprises all technical characteristic of the gas and hot water heating equipment defroster of embodiment 1 offer, and embodiment 2 carries
For gas and hot water heating equipment defroster also include following technical characteristic：
Heat exchanging pipe 103 one end of the gas and hot water heating equipment defroster that Fig. 3 provides for this utility model embodiment 2
Structural representation when high one end is low；Refer to Fig. 2 and Fig. 3, the two ends of heat exchanging pipe 103 respectively with cold water inlet 101, heat
Water outlet pipe 102 connects, and heat exchanging pipe 103 is that higher end is low or the high two ends in middle part are low, and that is, heat exchanging pipe 103 is wherein
One end or two ends have the angle of inclination, as long as meet back water can discharge.
By being set to heat exchanging pipe 103, higher end is low or the high two ends in middle part are low, makes residual in heat exchanging pipe 103
The water energy stayed enough flows to cold water inlet 101 or hot water outlet pipe 102 under self gravitation effect, and eventually through the first valve
Door 107 or the second valve 108 are discharged.
Cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107 and the second valve 108 can adopt mechanical type
Manually-operated gate or electromagnetic valve.
Using mechanical type manual valve, manually controllable cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107
And second valve 108 opening and closing, flexible operation is autonomous.
In the present embodiment, cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107 and the second valve 108 are
Electromagnetic valve, cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107 and the second valve 108 are all with controller 109 even
Connect.Certainly, cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107 and the second valve 108 can also be other valves
Door, such as electronics ball valve, as long as automatic shutter can be realized under the control of controller 109.
Using electromagnetic valve, by the controlled chilled water water intaking valve 105 of controller 109, hot water effluent's valve 106, the first valve 107
And second valve 108 opening and closing, precise control is quick.
Refer to Fig. 2 and Fig. 3, this gas and hot water heating equipment defroster also includes guidance panel 110, guidance panel
It is provided with control knob 111, control knob 111 is connected with controller 109 by control circuit on 110.
The present embodiment adopts wired control mode, and certain the present embodiment can also be using wireless control mode, such as
Bluetooth, infrared, WiFi etc., as long as user can control the opening and closing of each valve by controller 109.
By arranging guidance panel 110, and control knob 111 is set on the control panel, by pressing control knob
111, opening of cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107 and the second valve 108 is controlled by controller 109
Close, simple to operate, convenient and swift.
It is additionally provided with multiple buttons, including drain button, play button, mode selecting button etc., mould on guidance panel 110
Formula select button includes summer mode button, winter mode button and intelligent mode button etc..Wherein, summer mode refers to give tacit consent to
The weather that will not freeze for water, abandons temperature monitoring completely, also abandons discharging the pattern of the function of remaining water.Winter mode refers to write from memory
Think that weather can make water freezing, when machine is detected in off working state, and then discharge in machine when temperature is less than preset temperature
Water more than portion, and the pattern of start-up temperature monitoring and heat-insulation preheating function.Intelligent mode is exactly that machine carries out temperature monitoring and insulation
Preheating function, starts the pattern of water function more than discharging when heat-insulation preheating function on number of times reaches preset times.
Cold water water intaking valve 105, hot water effluent's valve 106, the first valve 107 and the second valve 108 not necessarily with combustion gas
Hot-water heating equipment 201 one, with split, and can be installed to maneuverable place, such as indoor, as long as pipeline can be passed through
104 positions corresponding with gas and hot water heating equipment 201 connect.
Interface between above-mentioned parts all can adopt standard interface, versatility good it is easy to disassembling, assembling and replacing.
Embodiment 3
The structural representation of the gas and hot water heating equipment 201 that Fig. 4 provides for this utility model embodiment 3；Refer to figure
4, this utility model embodiment 3 provides a kind of gas and hot water heating equipment 201, and this gas and hot water heating equipment 201 includes reality
The gas and hot water heating equipment defroster of example 1 or 2 offer is provided, and the gas and hot water heating equipment 201 that embodiment 3 provides is also
Including following technical characteristic：
This gas and hot water heating equipment 201 also includes antifreeze temperature controller 202 and heating and anti-freezing protection device 204, and heating is anti-
Freeze protection device 204 and include the heater for being heated to the water in pipeline 104.By arranging antifreeze temperature controller 202,
The temperature of pipeline 104 can be detected, and when the temperature of pipeline 104 is less than preset temperature, heater works, to pipeline 104
Interior water is heated, it is to avoid the too low icing of the coolant-temperature gage in pipeline 104, leads to pipeline 104 spalling, makes gas and hot water further
Heating equipment 201 is antifreeze.
Antifreeze temperature controller 202 is provided with multiple temperature acquisition points 203, and multiple temperature acquisition points 203 are respectively arranged at pipeline
The diverse location of 104 outer walls.Temperature acquisition point 203 is temperature sensor.
Temperature due to pipeline 104 diverse location is likely to occur difference, by arranging multiple temperature acquisition points 203, respectively
The temperature of collection pipeline 104 diverse location, as long as the temperature of the wherein temperature acquisition point 203 of predetermined number is less than preset temperature,
So that heater is worked, improve sensitivity and the accuracy that antifreeze temperature controller 202 controls.
Antifreeze temperature controller 202 and heating and anti-freezing protection device 204 all can be connected with controller 109 it is also possible to be controlled with other
Device processed connects.
The present embodiment provide gas and hot water heating equipment 201 due to being provided with gas and hot water heating equipment defroster,
In its pipeline, remaining water can be discharged by the first valve 107 and the second valve 108, it is to avoid back water in pipeline, make pipeline
Will not because internal back water endure cold icing and spalling, therefore the present embodiment provide gas and hot water heating equipment 201 can be freeze proof, fall
Low property loss, and it is mountable to outdoor, improve and use safety coefficient, more safe and reliable.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then do not need it to be defined further and explains in subsequent accompanying drawing.
In description of the present utility model, it should be noted that the orientation of instruction or the position relationship such as term " interior ", " outward "
It is based on orientation shown in the drawings or position relationship, or the orientation usually put or position when this utility model product uses
Relation, is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must
Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.This
Outward, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or hint relative importance.
In addition it is also necessary to explanation in description of the present utility model, unless otherwise clearly defined and limited, term " sets
Put ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be to be mechanically connected or electrical connection；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in utility model.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this
For the technical staff in field, this utility model can have various modifications and variations.All of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvement made etc., should be included within protection domain of the present utility model.
Claims (8)
1. a kind of gas and hot water heating equipment defroster is it is characterised in that include intaking by the cold water that pipeline is sequentially connected
Pipe, heat exchanging pipe and hot water outlet pipe；
Described cold water inlet is provided with cold water water intaking valve away from one end of described heat exchanging pipe, and described hot water outlet pipe is away from institute
The one end stating heat exchanging pipe is provided with hot water effluent's valve；
Back water arm, described cold water water inlet are provided with the tube wall of the tube wall of described cold water inlet and described hot water outlet pipe
First valve is provided with the back water arm of pipe, the back water arm of described hot water outlet pipe is provided with the second valve.
2. gas and hot water heating equipment defroster according to claim 1 it is characterised in that described heat exchanging pipe two
End is connected with described cold water inlet, described hot water outlet pipe respectively, and described heat exchanging pipe is for higher end is low or middle part
High two ends are low.
3. gas and hot water heating equipment defroster according to claim 1 it is characterised in that described cold water water intaking valve,
Described hot water effluent's valve, described first valve and described second valve are mechanical type manual valve.
4. gas and hot water heating equipment defroster according to claim 1 it is characterised in that described cold water water intaking valve,
Described hot water effluent's valve, described first valve and described second valve are electromagnetic valve, described cold water water intaking valve, described hot water
Outlet valve, described first valve and described second valve are all connected with controller.
5. gas and hot water heating equipment defroster according to claim 4 is it is characterised in that also include guidance panel,
It is provided with control knob, described control knob is connected with described controller by control circuit on described guidance panel.
6. a kind of gas and hot water heating equipment is it is characterised in that include the gas and hot water heating described in any one of claim 1-5
Equipment defroster.
7. gas and hot water heating equipment according to claim 6 is it is characterised in that also including antifreeze temperature controller and heating anti-
Freeze protection device, described heating and anti-freezing protection device includes the heater for being heated to the water in described pipeline.
8. gas and hot water heating equipment according to claim 7 it is characterised in that described antifreeze temperature controller be provided with multiple
Temperature acquisition point, multiple described temperature acquisition points are respectively arranged at the diverse location of described pipeline outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620970564.2U CN205957490U (en) | 2016-08-26 | 2016-08-26 | Gas hot -water heating equipment freeze -proof device and adoption device's gas hot -water heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620970564.2U CN205957490U (en) | 2016-08-26 | 2016-08-26 | Gas hot -water heating equipment freeze -proof device and adoption device's gas hot -water heating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205957490U true CN205957490U (en) | 2017-02-15 |
Family
ID=57980352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620970564.2U Expired - Fee Related CN205957490U (en) | 2016-08-26 | 2016-08-26 | Gas hot -water heating equipment freeze -proof device and adoption device's gas hot -water heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205957490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701339A (en) * | 2021-08-25 | 2021-11-26 | 李程 | Self-adaptive anti-freezing gas water heater exhaust device |
-
2016
- 2016-08-26 CN CN201620970564.2U patent/CN205957490U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701339A (en) * | 2021-08-25 | 2021-11-26 | 李程 | Self-adaptive anti-freezing gas water heater exhaust device |
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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: 20170215 Termination date: 20210826 |
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| CF01 | Termination of patent right due to non-payment of annual fee |