CN108592379A - A kind of constant temp gas water heater - Google Patents
A kind of constant temp gas water heater Download PDFInfo
- Publication number
- CN108592379A CN108592379A CN201711500038.5A CN201711500038A CN108592379A CN 108592379 A CN108592379 A CN 108592379A CN 201711500038 A CN201711500038 A CN 201711500038A CN 108592379 A CN108592379 A CN 108592379A
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- water
- heater
- connection tube
- intermediate connection
- hot water
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Domestic Plumbing Installations (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention discloses a kind of constant temp gas water heater, including heater, water inlet pipe and outlet pipe；Further include water tank, water blocking piston is equipped among the water tank；The first intermediate connection tube and the second intermediate connection tube are equipped between the water tank and heater；The both ends of first intermediate connection tube are connected on the hot water end and water inlet pipe of water tank；The both ends of second intermediate connection tube are connected on the hot water end and outlet pipe of water tank；The cold water end of the water tank is connected with cold water oral siphon, and cold water drainpipe is connected on the cold water oral siphon；It is equipped with solenoid electric valve on the water inlet pipe, water inlet pipe, cold water oral siphon, cold water drainpipe, the first intermediate connection tube and the second intermediate connection tube.The constant temp gas water heater can be always maintained at the conveying of hot water after hot water valve is then turned on, the phenomenon that being not in cold water " surprise attack ", greatly improve the comfort of shower.
Description
Technical field
The present invention relates to heaters, and in particular to a kind of constant temp gas water heater.
Background technology
Gas heater is also known as gas water-heating furnace, refers to using combustion gas as fuel, by way of combustion heating, by heat
It is transmitted in the cold water for flowing through heat exchanger, to reach a kind of gas appliance for preparing hot water purpose.Usually, gas heater
Operation principle be to open hot water valve, cold water enters water heater from water inlet pipe；Wherein, after cold water enters water heater, aqueous vapor is flowed through
Valve body pushes aqueous vapor valve, and DC power supply microswitch is pushed to connect power supply simultaneously under the pressure difference effect of circulating water
And starting impulse igniter, combustion gas gas transmission electromagnetic valve is at the same time opened, is lighted a fire again automatically by pulse igniter continuation,
Until lighting a fire successfully, into working condition, persistently the cold water for flowing through heat exchanger is heated.Furthermore it is possible to according to flow
Speed is reacted to control system, and control system can adjust the supply ratio of combustion gas according to the temperature of setting, make up to constant temperature
State.
But during using hot water, if hot water valve is closed in midway, water can stop flowing so that aqueous vapor valve is closed,
So water heater will be stopped；After being again turned on hot water valve, due to water heater lighted a fire and heated need it is certain
Then time exports one section of cold water so water heater can first export one section of hot water, finally just lasting to export stable hot water.This
Sample not only greatly reduces the comfort of shower, is also easy to so that user catches a cold because of cold water " surprise attack ", and then causes to give birth to
Disease.
Invention content
It is above-mentioned it is an object of the invention to overcome the problems, such as, a kind of constant temp gas water heater is provided, the constant temp gas
Water heater can be always maintained at the conveying of hot water after hot water valve is then turned on, the phenomenon that being not in cold water " surprise attack ", carry significantly
The comfort that height is taken a shower.
The purpose of the present invention is achieved through the following technical solutions：
A kind of constant temp gas water heater, including heater, the water inlet pipe that is connect with the water inlet end of heater and with heating
The outlet pipe of the water outlet connection of device；
Further include water tank, water blocking piston is equipped among the water tank；Positioned at water blocking piston side in the water tank
Part is hot water end, and the part for being located at the other side is cold water end；It is equipped among first and connects between the water tank and heater
Pipe and the second intermediate connection tube；The both ends of first intermediate connection tube are connected to hot water end and the water inlet pipe of water tank
On；The both ends of second intermediate connection tube are connected on the hot water end and outlet pipe of water tank；The water tank it is cold
Water end (W.E.) is connected with cold water oral siphon, and cold water drainpipe is connected on the cold water oral siphon；
The water inlet pipe, cold water oral siphon, cold water drainpipe, connects among the first intermediate connection tube and second water inlet pipe
It takes over and is equipped with solenoid electric valve.
The operation principle of above-mentioned constant temp gas water heater is：
Usually, when opening hot water valve for the first time, the Electromagnetic Control on cold water oral siphon, the first intermediate connection tube and outlet pipe
Valve is opened, other solenoid electric valves are closed；Cold water flows through cold water oral siphon, and water tank is flowed into from the cold water end of water tank, to
The direction for driving water blocking piston toward the hot water end of water tank is moved, until water blocking piston is moved to the end at the hot water end of water tank
Place.Wherein, before water blocking piston is moved to the end at hot water end of water tank, it is initially positioned at the cold water at the hot water end of water tank
It is extruded away, the cold water being extruded away is flowed by the first intermediate connection tube in heater, successively drives aqueous vapor
Valve and driving gas valve are opened, and then complete igniting so that heater initially enters working condition；When water blocking piston is moved to storage
After the end at the hot water end of water tank, the solenoid electric valve of water inlet pipe and outlet pipe is opened, other solenoid electric valves are closed, at this time
Water flows into heater from water inlet pipe, then is flowed out from outlet pipe.
Since the igniting and heating of water heater need certain time, so cold water of the front for drive ignition is not added
Heat is finally flowed out from outlet pipe；By after a certain period of time, heater enters heated condition, the cold water for flowing through heater can be added
Heat, to normally export hot water.
After outlet pipe normally exports hot water, the electricity on water inlet pipe, outlet pipe, the second intermediate connection tube and cold water drainpipe
Magnetic control valve is opened, other solenoid electric valves are closed；At this point, hot water is flowed out from the water outlet of heater, outlet pipe is flowed into respectively
With the second intermediate connection tube, wherein hot water flows into water tank from the second intermediate connection tube, to drive water blocking piston toward water tank
Cold water end direction movement, until water blocking piston is moved at the end at cold water end of water tank so that be initially positioned at water storage
The cold water at the cold water end of case is extruded away, and the cold water being extruded away is flowed out through subcooled water drainpipe.
During use, when being then turned on after hot water valve closing, on cold water oral siphon, the first intermediate connection tube and outlet pipe
Solenoid electric valve open, other solenoid electric valves are closed, and the cold water that is flowed into from cold water oral siphon drives water blocking piston toward water storage
It moves in the direction at the hot water end of case so that hot water is extruded away, and the hot water being extruded away is connected by the first centre
Pipe is flowed into heater, successively drives aqueous vapor valve and driving gas valve to open, and then complete igniting, until heater enters just
Normal heated condition.Capacity by the way that water tank is arranged is more than the water for driving Water heater igniting, in current ignition process
In, it is hot water in water receiver for drive Water heater igniting, after hot water valve is restarted, from continuing for outlet pipe outflow water
For hot water.
In use, the hot water in the hot water end of water tank needs in due course after driving heater work to water storage
Hot water is supplemented in the hot water end of case, the process for supplementing hot water is：When hot water valve is then turned on, heater enters normal heating state
Afterwards, the solenoid electric valve on water inlet pipe, outlet pipe, the second intermediate connection tube and cold water drainpipe is opened, other solenoid electric valves
It closes, the hot water flowed out from outlet pipe, a shunting part flows into water tank from the second intermediate connection tube, to drive water blocking piston
Toward the direction movement at the cold water end of water tank, the cold water in the cold water end of water tank is squeezed out, while storing hot water.And what
Shi Jinhang hot water, which supplements, then to be determined depending on hot water amount in water tank and for driving the required hot water amount of heater starting, former
It is to ensure that whenever hot water amount in water tank can drive heater starting next time in use on then, such as
Can using in water tank remaining hot water as measurement standard, when it is few to a certain extent when, just start the action of hot water supplement.
The preferred embodiment of the present invention, wherein second intermediate connection tube merges in the close to one end of water tank
On one intermediate connection tube, the other end is connected to the water outlet of heater；First intermediate connection tube and the second intermediate connection tube
The one end converged is equipped with water flow sensor.The advantages of this arrangement are as follows, on the one hand, when opening hot water valve for the first time, water
Flow sensor by recording the water that flows out in water tank, to learn water blocking piston be moved to the hot water end of water tank when
Between, and then the solenoid electric valve on water inlet pipe can be accurately opened, the solenoid electric valve on cold water oral siphon is simultaneously closed off, is made
Cold water is obtained to flow into heater from water inlet pipe；On the other hand, due to same water heater, for driving heater to enter heated condition
Water be certain, when hot water valve is then turned on, cold water is flowed into from cold water oral siphon in water tank, driving water blocking piston will be hot
Water is transferred out from the hot water end of water tank, and in the process, water flow sensor is by detecting the water flowed through, to learn
Whether heater enters heated condition；After heater enters heated condition, water flow sensor is passed to the controller of water heater
The signal of switching switch is passed, the solenoid electric valve on water inlet pipe, cold water drainpipe and the second intermediate connection tube is opened, closes first
Solenoid electric valve on intermediate connection tube and cold water oral siphon so that hot water flows into the second intermediate connection tube and outlet pipe respectively,
It can both ensure to continue output hot water in this way, also can in time add to hot water in water tank, in case next hot water valve is then turned on
When use.
The preferred embodiment of the present invention, wherein the solenoid electric valve is Unidirectional solenoid valve.By using unidirectional electricity
Magnet valve, under the control of the controller in water heater, the on and off of pipeline where can controlling automatically and accurately, so that it is guaranteed that
Hot water can be sustainedly and stably exported when hot water valve is then turned on.
The preferred embodiment of the present invention, wherein one end of the cold water drainpipe is connected on cold water oral siphon, another
End merges on cold water drainpipe.
The preferred embodiment of the present invention, wherein one end that the outlet pipe is connected to the water outlet of heater is equipped with temperature
Spend sensor.It is cold water from water heater discharge when first unlatching hot water valve, after the regular hour, heater enters just
Normal heated condition could heat cold water；Wherein, the effect of temperature sensor is, can detect in real time from heating
Water temperature can also be included, to prompt water temperature at this time, being slapped convenient for user on the display screen of water heater by the water temperature of device outflow
Hold the outflow situation of hot water.
The present invention has the advantages that compared with prior art：
1, when hot water valve is restarted, the solenoid electric valve on cold water oral siphon, the first intermediate connection tube and outlet pipe is beaten
It opens, other solenoid electric valves are closed, and cold water flows into water tank from cold water oral siphon, to drive water blocking piston toward the heat of water tank
It moves in the direction of water end (W.E.) so that hot water is extruded away, and the hot water being extruded away is flowed by the first intermediate connection tube
Into heater, heater is promoted to enter heated condition；Capacity by the way that water tank is arranged is more than for driving Water heater igniting
Water be hot water in water receiver for drive Water heater igniting, restart in hot water valve in current ignition process
Afterwards, it is hot water from outlet pipe output water.In use, it needs to supplement hot water into the hot water end of water tank in due course,
Supplement hot water process be：After heater enters heated condition, water inlet pipe, outlet pipe, the second intermediate connection tube and cold water row
Solenoid electric valve on water pipe is opened, other solenoid electric valves are closed so that the hot water flowed out from heater, a shunting part from
Second intermediate connection tube flows into water tank, to which the direction for driving water blocking piston toward the cold water end of water tank is moved, will be located at storage
Cold water between the cold water end and water blocking piston of water tank squeezes out, while storing hot water；It so recycles always, so that it is guaranteed that hot water valve
The water exported after being then turned on is hot water, the phenomenon that being not in cold water " surprise attack ", greatly improves the comfort of shower.
2, since the water heater of the present invention can continue to export stable hot water, when hot water valve is then turned on, picture is not present
After existing water heater cold water drained like that, just the phenomenon that output hot water, i.e., after hot water valve is then turned on, you can use heat at once
Water need not exhaust cold water, and the comfort of shower both can be improved in this way, can also reduce the waste of water resource.
Description of the drawings
Fig. 1-4 is the structure diagram of the constant temp gas water heater of the present invention in use, and heavy line indicates hot water, carefully
Solid line indicates cold water, the direction for being oriented to flow of arrow.Wherein, structure diagram when Fig. 1 is initial unlatching hot water valve, Fig. 2
Entering after normal heated condition the structure diagram for storing hot water for heater, Fig. 3 is structure diagram when normally exporting hot water,
Structure diagram when Fig. 4 is then turned on for hot water valve.
Specific implementation mode
In order to make those skilled in the art be best understood by technical scheme of the present invention, with reference to embodiment and attached drawing
The invention will be further described, but embodiments of the present invention are not limited only to this.
Referring to Fig. 1-4, the constant temp gas water heater in the present embodiment, including heater 1, connect with the water inlet end of heater 1
The water inlet pipe 2 connect and the outlet pipe 3 being connect with the water outlet of heater 1；Further include water tank 4, is equipped among the water tank 4
Water blocking piston 5；The part for being located at 5 side of water blocking piston in the water tank 4 is hot water end, and the part for being located at the other side is cold water
End；The first intermediate connection tube 6 and the second intermediate connection tube 7 are equipped between the water tank 4 and heater 1；Among described first
The both ends of connecting tube 6 are connected on the hot water end and water inlet pipe 2 of water tank 4；The both ends of second intermediate connection tube 7 point
It is not connected on the hot water end and outlet pipe 3 of water tank 4；The cold water end of the water tank 4 is connected with cold water oral siphon 8, this is cold
Cold water drainpipe 9 is connected on water oral siphon 8；One end of the cold water drainpipe 9 is connected on cold water oral siphon 8, the other end
It merges on cold water drainpipe 9；The water inlet pipe 2, water inlet pipe 2, cold water oral siphon 8, the 9, the first centre connection of cold water drainpipe
It is equipped with solenoid electric valve 10 on pipe 6 and the second intermediate connection tube 7.
Referring to Fig. 1-4, second intermediate connection tube 7 merges in the first intermediate connection tube 6 close to one end of water tank 4
On, the other end is connected to the water outlet of heater 1；One end that first intermediate connection tube, 6 and second intermediate connection tube 7 converges
It is equipped with water flow sensor 11.The advantages of this arrangement are as follows, on the one hand, when opening hot water valve for the first time, water flow sensing
Device 11 is by recording the water flowed out in water tank 4, to learn that water blocking piston 5 is moved to the time at the hot water end of water tank 4,
And then the solenoid electric valve 10 on water inlet pipe 2 can be accurately opened, simultaneously close off the solenoid electric valve on cold water oral siphon 8
10 so that cold water is flowed into from water inlet pipe 2 in heater 1；On the other hand, due to same water heater, for driving heater 1 to enter
The water of heated condition is certain, and when hot water valve is then turned on, cold water is flowed into from cold water oral siphon 8 in water tank 4, driving gear
Water piston 5 transfers out hot water from the hot water end of water tank 4, and in the process, water flow sensor 11 is flowed through by detection
Water, to learn heater 1 whether enter heated condition；After heater 1 enters heated condition, water flow sensor 11
The signal of switching switch is transmitted to the controller of water heater, is opened on water inlet pipe 2, cold water drainpipe 9 and the second intermediate connection tube 7
Solenoid electric valve 10, close the solenoid electric valve 10 on the first intermediate connection tube 6 and cold water oral siphon 8 so that hot water is distinguished
The second intermediate connection tube 7 and outlet pipe 3 are flowed into, can both ensure to continue output hot water in this way, also can in time add to hot water
In water tank 4, in case next hot water valve uses when being then turned on.
Referring to Fig. 1-4, the solenoid electric valve 10 is Unidirectional solenoid valve.By using Unidirectional solenoid valve, in water heater
In controller control under, can control automatically and accurately where pipeline on and off, so that it is guaranteed that being opened again in hot water valve
Hot water can be sustainedly and stably exported when opening.
Referring to Fig. 1-4, one end that the outlet pipe 3 is connected to the water outlet of heater 1 is equipped with temperature sensor 12.For the first time
It is cold water from water heater discharge when opening hot water valve, after the regular hour, heater 1 enters normal heated condition,
Cold water could be heated；Wherein, the effect of temperature sensor 12 is, can detect the water flowed out from heater 1 in real time
Water temperature can also be included, to prompt water temperature at this time, the stream of hot water being grasped convenient for user on the display screen of water heater by temperature
Artificial situation.
Referring to Fig. 1-4, the operation principle of the constant temp gas water heater in the present embodiment is：
Usually, when opening hot water valve for the first time, the electromagnetism on cold water oral siphon 8, the first intermediate connection tube 6 and outlet pipe 3
Control valve 10 is opened, other solenoid electric valves 10 are closed；Cold water flows through cold water oral siphon 8, flows into and stores up from the cold water end of water tank 4
Water tank 4, to which the direction for driving water blocking piston 5 toward the hot water end of water tank 4 is moved, until water blocking piston 5 is moved to water tank 4
Hot water end the end at.Wherein, before water blocking piston 5 is moved to the end at hot water end of water tank 4, it is initially positioned at water storage
The cold water at the hot water end of case 4 is extruded away, and the cold water being extruded away is flowed into heating by the first intermediate connection tube 6
In device 1, aqueous vapor valve and driving gas valve is successively driven to open, and then complete igniting so that heater 1 initially enters work shape
State；After water blocking piston 5 is moved to the end at hot water end of water tank 4, the solenoid electric valve 10 of water inlet pipe 2 and outlet pipe 3 is beaten
It opens, other solenoid electric valves 10 are closed, and water at this time flows into heater 1 from water inlet pipe 2, then is flowed out from outlet pipe 3.
Since the igniting and heating of water heater need certain time, so cold water of the front for drive ignition is not added
Heat is finally flowed out from outlet pipe 3；By after a certain period of time, heater 1 enters heated condition, can will flow through the cold water of heater 1
Heating, to normally export hot water.
After the normally output hot water of outlet pipe 3, water inlet pipe 2, outlet pipe 3, the second intermediate connection tube 7 and cold water drainpipe 9
On solenoid electric valve 10 open, other solenoid electric valves 10 close；At this point, hot water is flowed out from the water outlet of heater 1, respectively
Flow into outlet pipe 3 and the second intermediate connection tube 7, wherein hot water flows into water tank 4 from the second intermediate connection tube 7, to drive gear
The direction at water piston 5 toward the cold water end of water tank 4 is moved, until water blocking piston 5 is moved to the end at the cold water end of water tank 4
Place so that the cold water for being initially positioned at the cold water end of water tank 4 is extruded away, and the cold water being extruded away is arranged through subcooled water
Water pipe 9 flows out.
During use, when being then turned on after hot water valve closing, cold water oral siphon 8, the first intermediate connection tube 6 and outlet pipe
Solenoid electric valve 10 on 3 is opened, other solenoid electric valves 10 are closed, and the cold water driving water blocking flowed into from cold water oral siphon 8 is lived
It moves in the direction at plug 5 toward the hot water end of water tank 4 so that hot water is extruded away, and the hot water being extruded away is by the
One intermediate connection tube 6 is flowed into heater 1, successively drives aqueous vapor valve and driving gas valve to open, and then complete igniting, until
Heater 1 enters normal heated condition.Capacity by the way that water tank 4 is arranged is more than the water for driving Water heater igniting,
It is hot water in water receiver for drive Water heater igniting, after hot water valve is restarted, from water outlet in current ignition process
3 outflow water of pipe is continuously hot water.
In use, the hot water in the hot water end of water tank 4 needs in due course after driving heater 1 works to storage
Hot water is supplemented in the hot water end of water tank 4, the process for supplementing hot water is：When hot water valve is then turned on, heater 1 enters normal heating shape
After state, the solenoid electric valve 10 on water inlet pipe 2, outlet pipe 3, the second intermediate connection tube 7 and cold water drainpipe 9 is opened, other electricity
Magnetic control valve 10 is closed, and the hot water flowed out from outlet pipe 3, a shunting part flows into water tank 4 from the second intermediate connection tube 7, from
And the direction for driving water blocking piston 5 toward the cold water end of water tank 4 is moved, and the cold water in the cold water end of water tank 4 is squeezed out,
Store hot water simultaneously.And it is then required depending on hot water amount in water tank 4 and for driving heater 1 to start when to carry out hot water supplement
The hot water amount wanted determines, is to ensure that in water tank 4 whenever hot water amount can drive down in use in principle
Primary heater 1 starts, for example, can using remaining hot water in water tank 4 as measurement standard, when lacking to a certain extent,
With regard to starting the action of hot water supplement.
Above-mentioned is the preferable embodiment of the present invention, but embodiments of the present invention are not limited by the foregoing content,
His any changes, modifications, substitutions, combinations, simplifications done without departing from the spirit and principles of the present invention, should be
The substitute mode of effect, is included within the scope of the present invention.
Claims (5)
1. a kind of constant temp gas water heater, including heater, the water inlet pipe and and heater that are connect with the water inlet end of heater
Water outlet connection outlet pipe；It is characterized in that,
Further include water tank, water blocking piston is equipped among the water tank；It is located at the part of water blocking piston side in the water tank
For hot water end, the part for being located at the other side is cold water end；Between the water tank and heater be equipped with the first intermediate connection tube and
Second intermediate connection tube；The both ends of first intermediate connection tube are connected on the hot water end and water inlet pipe of water tank；Institute
The both ends for stating the second intermediate connection tube are connected on the hot water end and outlet pipe of water tank；The cold water end of the water tank connects
It is connected to cold water oral siphon, cold water drainpipe is connected on the cold water oral siphon；
The water inlet pipe, water inlet pipe, cold water oral siphon, cold water drainpipe, the first intermediate connection tube and the second intermediate connection tube
On be equipped with solenoid electric valve.
2. constant temp gas water heater according to claim 1, which is characterized in that second intermediate connection tube is close to water storage
One end of case merges on the first intermediate connection tube, and the other end is connected to the water outlet of heater；First intermediate connection tube
It is equipped with water flow sensor with one end that the second intermediate connection tube converges.
3. constant temp gas water heater according to claim 1, which is characterized in that the solenoid electric valve is unidirectional electromagnetism
Valve.
4. constant temp gas water heater according to claim 1, which is characterized in that one end of the cold water drainpipe is connected to
On cold water oral siphon, the other end merges on cold water drainpipe.
5. according to the constant temp gas water heater described in claim 1-4, which is characterized in that the outlet pipe is connected to heater
One end of water outlet is equipped with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711500038.5A CN108592379B (en) | 2017-12-30 | 2017-12-30 | Constant temperature gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711500038.5A CN108592379B (en) | 2017-12-30 | 2017-12-30 | Constant temperature gas water heater |
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| CN108592379A true CN108592379A (en) | 2018-09-28 |
| CN108592379B CN108592379B (en) | 2021-02-05 |
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Effective date of registration: 20210120 Address after: 710000 No. 4302, Yaju commercial and residential building, south of Weiqu Town, Chang'an District, Xi'an City, Shaanxi Province Applicant after: Shaanxi Hongda warm doctor cooling and heating equipment Co.,Ltd. Address before: Room 286a, 2 / F, dongbianwei Industrial Zone, Xiaxi, Guicheng, Nanhai District, Foshan City, Guangdong Province, 528200 Applicant before: FOSHAN JIZHIHUI TECHNOLOGY Co.,Ltd. |
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