CN1987283A - Gas firing water heater - Google Patents
Gas firing water heater Download PDFInfo
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- CN1987283A CN1987283A CN 200610144034 CN200610144034A CN1987283A CN 1987283 A CN1987283 A CN 1987283A CN 200610144034 CN200610144034 CN 200610144034 CN 200610144034 A CN200610144034 A CN 200610144034A CN 1987283 A CN1987283 A CN 1987283A
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Abstract
A gas-type water heater is composed of main body, water tank with air exchanging holes, water level meter and check valve, water releasing valve, reflux pipeline, gas-type heating part, temp controlled valve, temp controlled buzzer, gas tube, water inlet trunk, and waste gas exhausting pipe.
Description
Technical field
The present invention relates to a kind of combustion type instant water heater that can eliminate the pipeline inner cold water fully, belong to water saving gas heater technical field in the building electric apparatus.
Background technology
As everyone knows, the water resource of China is day by day nervous in recent years.Especially in big and medium-sized cities, under all multifactor influences such as expansion of the growth of the propelling of national urbanization process, urban population, industrial development scale, the nervous situation of water resource is more and more severeer, becomes the focal issue that people pay close attention to.So advocating the idea of everybody using water wisely, each details water saving in life is rooted in the hearts of the people.
Yet the place in that a lot of pot-type boilers are used but can occur can not flowing out hot water immediately after the user opens hot-water switch usually, and bleeds off these " cold water before the hot water ", allows it waste.The formation of this part cold water has two reasons usually: the one, and the efficiency of heating surface of water heater is not high enough, makes current can not heat up rapidly when heater block and cold water occurs to enter outlet pipe; The 2nd, water heater and user directly use residual water in the pipeline between the afterbody valve of hot water, and this part cold water no longer will directly enter outlet pipe through heater block.
In order to solve the problem of this part " cold water before the hot water " waste, common traditional solution is to improve gas-operated thermal bath facility at present, guarantees that the efficient of heating heats up the needed time to shorten cold water; And the adding intelligently-controlled heating system, by the operation of intelligent controller control heating system, for example according to hydraulic pressure self-starting firing equipment, the remaining water yield in the pipeline when not using to reduce as far as possible.Be the structural representation of existing water heater among Fig. 1, wherein, 8. flowing water Valve, the heater block of 11. traditional combustion type fast water heaters, 13. the temperature control buzzer, 14. burnt gas valves, 15. gas supply pipes, 16. the water inlet manifold road, 19. water inlet electrically operated valves, 22. combustion emission pipelines.The common feature of the solution of this quasi-tradition is that the heater block in the water heater (11) is transformed, as patent " microhole burner for gas water heater ", 95118918.2, Yang Bin; Perhaps be aided with automatic temperature-adjusting, water pressure control system, as patent " full-automatic gas-fired water heater ", 91110770.3, Pan Guangping; These class methods have been controlled the volume of the cold water that is not in time heated to a certain extent, reach the purpose of minimizing " cold water before the hot water ".But this quasi-tradition solution all only is in the formation reason of above described " hot water before cold water " the former, the common difficult problem that they are all run into is, firing equipment efficient height how no matter, all can't avoid the waste of cold water remaining in the pipeline of heater block front end in the water heater, also can't eliminate fully because the water resource waste that water heater outflow cold water causes with regard to only reducing.
The quantity of remaining cold water also is surprising in the pipeline of this part water heater front end.Particularly for the water heater of combustion type, because it is to wait by burning coal gas water is heated, the danger that has also just brought imperfect combustion may produce toxic gas waits the good place of circulation of air so place it in usually outside the bathroom.Like this, really guaranteed that the user's is safe in utilization, increase the duct length between the afterbody valve that water heater and user directly use hot water also on the other hand, also just strengthened the water yield of above said " cold water before the hot water ", caused bigger water resource waste.Resulting estimate according to investigations, in the residenter house of one ten floor height, above-mentioned duct length on average surpasses 5 meters, and (model: DN20) calculate, the water yield of " cold water before the hot water " is approximately 1570 milliliters to be 20 millimeters by pipe diameter; Calculate by 2 hot water of average each household use every day, the water yield of each household waste in a year is about 1130.4 liters so, and the bed rearrangement residential building calculates by 300 families, and the Total Water of wasting in a year will reach 339120 liters, amount to 339.1 tons.
And in the present invention, former therefore two at the formation of " hot water before cold water ", between outlet pipe and water heater, set up reflux line, this part cold water is refluxed to be stored, and reenters heater when on the low side automatically detecting temperature.So fundamentally eliminated the interior remaining cold water of the pipeline of heater block front end in the water heater, guaranteed " zero cold water ", eliminated owing to not flowing out the water resource waste that hot water causes at once, also convenient for users to use.
Summary of the invention
The object of the present invention is to provide a kind of water saving gas heater.As previously mentioned, because the user is when using conventional water heaters, still the cold water of residual fraction in the pipeline between the afterbody valve that heater block in the water heater and user directly use hot water, and this part cold water no longer will directly enter outlet pipe through heater block, cause the user to bleed off this part cold water possibly, formed water resource waste.How effectively utilizing the interior remaining cold water of pipeline of this part water heater front end, eliminate water resource waste fully to reach, is the matter of utmost importance that the present invention solves.For this reason, the present invention sets up reflux line between outlet pipe and water heater, and this part cold water is refluxed to be stored, and reenters heater automatically when on the low side detecting temperature, has reached the purpose that recycles, eliminates waste.
A kind of gas heater, this gas heater comprise body (1), storage tank (2), the air-vent of storage tank (3), the heat insulation coating of storage tank (4), the insulation air valve (5) of storage tank, the thermometer of storage tank (6), the level scale meter (7) of storage tank, flowing water Valve (8), reflux line (9), non-return valve (10), the heater block (11) of tradition combustion type fast water heater, temperature control valve (12), temperature control buzzer (13), burnt gas valve (14), gas supply pipe (15), water inlet manifold road (16), float valve (17), contact-making switch (18), water inlet electrically operated valve (19), loop by-pass valve control (20), electric water pump (21), combustion emission pipeline (22);
Insert storage tank (2) in the inner and upper of water heater body (1), the level scale meter (7) of air-vent (3), heat insulation coating (4), insulation air valve (5), thermometer (6) and storage tank is housed on the storage tank (2); Flowing water Valve in water supply line (8) increases reflux line (9) afterwards, is connected to storage tank (2); Non-return valve (10) is equipped with at another outlet conduit place in the storage tank (2), and direction down; Water inlet manifold road (16) is by heater block (11) top of traditional combustion type fast water heater; The heater block (11) of tradition combustion type fast water heater places the below, inside of water heater body (1); Temperature control valve (12) and temperature control buzzer (13) are contained on the reflux line (9); Gas supply pipe (15) connects burnt gas valve (14) and heater block (11); Burnt gas valve (14) is positioned on the gas supply pipe (15), the outside below of body (1); Float valve (17) and contact-making switch (18) all are contained in storage tank (2) inside, and contact-making switch (18) respectively has one in the top and the bottom of storage tank (2); Water inlet electrically operated valve (19) is contained on the inner water inlet manifold road (16) of body (1); Loop by-pass valve control (20) is contained between water heater delivery port and the flowing water Valve (8); Electric water pump (21) and non-return valve (10) are contained on the outlet conduit of same storage tank (2), and in the top of non-return valve (10); Combustion emission pipeline (22) is contained in the inner and upper of water heater body (1), Yi Bian connect the exhaust opening of heater block (11), another side leads to the outside top of body (1).
The present invention inserts storage tank (2) in the inner and upper of water heater body (1), its volume is about three times of (but not being limited to) waterpipe total measurement (volume), and has the level scale meter (7) of air-vent (3), heat insulation coating (4), insulation air valve (5), thermometer (6) and storage tank; Flowing water Valve in water supply line (8) increases reflux line (9) afterwards, and diversion flow back in the storage tank (2); Water in the storage tank (2) can pass through the heater block (11) that non-return valve (10) flows into traditional combustion type fast water heater, carries out post bake for the latter; Temperature control valve (12) and temperature control buzzer (13) are housed on the water inlet reflux line of storage tank (2), the two cooperates by the temperature automatic control technology and realizes the real-time detection of the water temperature in the pipeline and carry out corresponding control automatically: provide corresponding auditory tone cues and close temperature control valve (12) when detecting the temperature that water temperature rising user sets, provide corresponding auditory tone cues and open temperature control valve (12) when water temperature drops to the temperature that the user sets detecting; On the basis that above-mentioned functions realizes, the user opens burnt gas valve (14) by manual control, combustion gas is entered the heater block (11) of water heater by water inlet manifold road (16) by gas supply pipe (15), with water, trigger the automatic sense switch of hydraulic pressure of heater block, open burner, water flow back in the storage tank (2) through above-mentioned step through behind the heater block, when the heating water temperature arrives user preset, temperature control valve (12) is closed, temperature control buzzer (13) is sounded and is pointed out the user to use hot water, finishes a typical basic flow process of using.This moment, the user was from flowing water Valve (8) water intaking, and the water of outflow will guarantee it is hot water completely.
Float valve (17) and contact-making switch (18) are equipped with in storage tank (2) inside, the latter respectively has one in the top and the bottom of storage tank (2), the former can be floating at the water surface under the buoyancy of water effect, and can contact the contact-making switch at bottom and top under the situation of empty van and trunkful respectively; On water inlet manifold road (16), installed simultaneously water inlet electrically operated valve (19) additional, it and float valve (17) and contact-making switch (18) are connected to bang-bang circuit jointly by lead, latter's control is implemented in opens into water electrically operated valve (19) when float valve (17) contacts with the contact-making switch of bottom, close into water electrically operated valve (19) when float valve (17) contacts with the contact-making switch of bottom.So just, realized the automatic function of cutting off total feed source, when storage tank is empty, opening total feed source automatically when storage tank (2) is full.For the hydraulic pressure that overcomes in the storage tank (2) generally is not enough to start heater block (11) problem of igniting automatically, installed electric water pump (21) additional in the top of non-return valve (10), it starts when closing automatically at water inlet electrically operated valve (19), with the heating that circulates again of storage tank (2) back suction to water loops; When opening, water inlet electrically operated valve (19) stops automatically.
In order to control current more convenient and flexiblely, on the water circulation loop, installed loop by-pass valve control (20) additional, can manually control the on-off of water circulation loop for the user.
For convenience the user grasps current water situation, and level scale meter (7) is housed in storage tank (2), and the transparent part by outer cover of water heater manifests the water level in the water tank to the user.In addition, in storage tank (2) top air-vent (3) is housed, with guard box internal gas pressure balance.
Combustion emission pipeline (22) is equipped with in heater block (11) top at traditional combustion type fast water heater, for the waste gas safety dumping that the burning back produces, regulates when duct length can be installed according to user's needs, and is flexible.
Heat insulation coating (4) in the storage tank (2) and insulation air valve (5) have guaranteed the insulation of a time of the interior water of water tank under normal conditions, and be user-friendly.Expired when causing water temperature to drop under the preset temperature in insulation, the water in the water tank refluxes and reheats through heater block (11), starts a new use flow process.
The present invention also provides another water heater for the heater block (11) of traditional combustion type fast water heater of non-hydraulic pressure self-starting, is with the difference of scheme in the foregoing invention content:
One, removes electric water pump (21) and directly non-return valve (10) has been connected to storage tank (2);
Need the showing tremendous enthusiasm device ignition switch of manual unlocking when two, using, start showing tremendous enthusiasm device igniting.
It is little to transform part from existing technology to the present invention like this.
The present invention has rationally utilized the residual whole cold water in the pipeline in use, and the water that flows out from flowing water Valve guarantees it is hot water completely, has eliminated water resource waste fully, and simultaneously also convenient for users to use, effect is obvious.
Description of drawings
Fig. 1 is existing water heater structural representation.
Fig. 2 is a structural representation of the present invention.Arrow among Fig. 1 and Fig. 2 is represented the flow direction of current or combustion gas, and the pipeline that has long distance in the middle of the expression of the water pipe place of fractureing connects.
The specific embodiment
Below in conjunction with description of drawings the present invention.
Fig. 1 is existing water heater structural representation.
Fig. 2 is a structural representation of the present invention.Wherein, 1. body, 2. storage tank, 3. the air-vent of storage tank, the 4. heat insulation coating of storage tank, 5. the insulation air valve of storage tank, 6. the thermometer of storage tank, 7. the level scale meter of storage tank, 8. flowing water Valve, 9. reflux line, 10. non-return valve, the heater block of 11. traditional combustion type fast water heaters, 12. temperature control valves, 13. temperature control buzzer, 14. burnt gas valve, 15. gas supply pipes, 16. water inlet manifold roads, 17. float valve, 18. contact-making switch, 19. water inlet electrically operated valves, 20. loop by-pass valve controls, 21. electric water pump, 22. combustion emission pipelines.
Embodiment one
A kind of gas heater, this gas heater comprise body (1), storage tank (2), the air-vent of storage tank (3), the heat insulation coating of storage tank (4), the insulation air valve (5) of storage tank, the thermometer of storage tank (6), the level scale meter (7) of storage tank, flowing water Valve (8), reflux line (9), non-return valve (10), the heater block (11) of tradition combustion type fast water heater, temperature control valve (12), temperature control buzzer (13), burnt gas valve (14), gas supply pipe (15), water inlet manifold road (16), float valve (17), contact-making switch (18), water inlet electrically operated valve (19), loop by-pass valve control (20), electric water pump (21), combustion emission pipeline (22);
Insert storage tank (2) in the inner and upper of water heater body (1), the level scale meter (7) of air-vent (3), heat insulation coating (4), insulation air valve (5), thermometer (6) and storage tank is housed on the storage tank (2); Flowing water Valve in water supply line (8) increases reflux line (9) afterwards, is connected to storage tank (2); Non-return valve (10) is equipped with at another outlet conduit place in the storage tank (2), and direction down; Water inlet manifold road (16) is by heater block (11) top of traditional combustion type fast water heater; The heater block (11) of tradition combustion type fast water heater places the below, inside of water heater body (1); Temperature control valve (12) and temperature control buzzer (13) are contained on the reflux line (9); Gas supply pipe (15) connects burnt gas valve (14) and heater block (11); Burnt gas valve (14) is positioned on the gas supply pipe (15), the outside below of body (1); Float valve (17) and contact-making switch (18) all are contained in storage tank (2) inside, and contact-making switch (18) respectively has one in the top and the bottom of storage tank (2); Water inlet electrically operated valve (19) is contained on the inner water inlet manifold road (16) of body (1); Loop by-pass valve control (20) is contained between water heater delivery port and the flowing water Valve (8); Electric water pump (21) and non-return valve (10) are contained on the outlet conduit of same storage tank (2), and in the top of non-return valve (10); Combustion emission pipeline (22) is contained in the inner and upper of water heater body (1), Yi Bian connect the exhaust opening of heater block (11), another side leads to the outside top of body (1).
The typical flow process of using is as follows:
Use the first time after not using for a long time, can skip the first step and second step, directly entered for the 3rd step.
The first step: open loop by-pass valve control (20), start looped cycle;
Second step: open burnt gas valve (14), the into heater block of water heater (11) is led in combustion gas;
The 3rd step: water flows into the water heater body from water inlet manifold road (16), starts showing tremendous enthusiasm device igniting;
The 4th step: being heated to temperature control buzzer (13) when detecting water temperature and reaching user's preset temperature, send the buzzing prompting, temperature control valve (12) is closed automatically simultaneously, and be hot water completely this moment in the pipeline;
The 5th step: wait for that the user uses hot water; Drop to user's preset temperature when following if the overlong time of waiting for causes temperature control buzzer (13) to detect water temperature, send the buzzing prompting, temperature control valve (12) is opened automatically simultaneously, restarts water loops and circulates, and is retracted into for the 4th step; If it is full that float valve in the wait process (17) and contact-making switch (18) detect storage tank (2), then close into water electrically operated valve (19) automatically, start electric water pump (21), with the heating that circulates again of storage tank (2) back suction to water loops;
The 6th step: the user opens flowing water Valve (8), flows out hot water at once; Generally speaking, the water yield of storage tank in user's water utilizing process (2) continues to descend, and is empty if float valve (17) and contact-making switch (18) detect storage tank (2), then opens water inlet electrically operated valve (19) automatically, closes electric water pump (21);
The 7th step: water finishes, and closes opened flowing water Valve (8);
The 8th step: if do not use for a long time, close loop by-pass valve control (20), stop looped cycle;
The 9th step: if do not use for a long time, close burnt gas valve (14), cut off blast tube.
By above-mentioned use flow process as seen, because the volume of storage tank is about three times of (but not being limited to) waterpipe total measurement (volume), therefore in use, have only when user accumulative total surpasses to add for three times continuously and still do not use hot water after hot water arrives default water temperature and when causing storage tank full, just start electric water pump (21).This situation is rare usually, has just guaranteed basically that also water saving is not a cost to increase power consumption.
Embodiment two
As accompanying drawing 2, on the basis of embodiment one, increase parts: the insulation air valve (5) of the heat insulation coating of storage tank (4), storage tank; They can be for stored water in the storage tank (2) carries out one to two day insulation, to save the consumption of combustion gas.
Embodiment three
Consult accompanying drawing 2, on the basis of embodiment two, increase parts: the level scale meter (7) of storage tank, the thermometer (6) of storage tank; They all are embedded in storage tank (2) inside, and use transparent material in the relevant position of body (1) instead and make, and make things convenient for the user to observe the water yield and the temperature of water stored in the current storage tank (2).
Embodiment four
Consult accompanying drawing 2, heater block (11) for traditional combustion type fast water heater of non-hydraulic pressure self-starting, can remove electric water pump (21), in the embodiment one the 3rd step becomes: water flows into the water heater body from water inlet manifold road (16), the showing tremendous enthusiasm device ignition switch of manual unlocking starts showing tremendous enthusiasm device igniting.The major advantage of this embodiment has been to eliminate fully the electric energy loss that water saving might increase simultaneously, has guaranteed that fundamentally water saving is not a cost to increase power consumption.For existing gas water heater, can little change use the present invention with equipment such as electrically operated valve, thermometer, buzzers.
Illustrating of the above specific embodiment just is used to illustrate the present invention, do not limit the present invention.
Claims (8)
1, a kind of gas heater, it is characterized in that this gas heater comprises heater block (11), burnt gas valve (14), gas supply pipe (15), water inlet manifold road (16), water inlet electrically operated valve (19), combustion emission pipeline (22), reflux line (9), storage tank (2), electric water pump (21), the non-return valve (10) of body (1), flowing water Valve (8), traditional combustion type fast water heater;
Insert storage tank (2) in the inner and upper of water heater body (1); The heater block (11) of tradition combustion type fast water heater places the below, inside of water heater body (1);
Water inlet manifold road (16) is by heater block (11) top of traditional combustion type fast water heater;
The reflux line (9) that temperature control valve (12) and temperature control buzzer (13) are housed behind flowing water Valve (8) is connected to storage tank (2); Electric water pump (21) and non-return valve (10) are equipped with in proper order in an outlet conduit place in the storage tank (2), and this outlet conduit direction links to each other with water inlet manifold road (16) down;
Gas supply pipe (15) connects burnt gas valve (14) and heater block (11);
Combustion emission pipeline (22) is contained in the inner and upper of water heater body (1), Yi Bian connect the exhaust opening of heater block (11), another side leads to the outside top of body (1).
2, a kind of gas heater according to claim 1 is characterized in that, on described water inlet manifold road (16) the water inlet direction into water electrically operated valve (19) is housed.
3, a kind of gas heater according to claim 1 is characterized in that, described water heater hot-water hot-water outlet is equipped with loop by-pass valve control (20).
4, a kind of gas heater according to claim 1 is characterized in that, described storage tank (2) contains air-vent (3) and insulation air valve (5), and the level scale meter (7) of thermometer (6), storage tank is installed in the storage tank (2).
5, a kind of gas heater according to claim 4 is characterized in that, described storage tank (2) contains heat insulation coating (4).
6, a kind of gas heater according to claim 4 is characterized in that, the volume of described storage tank (2) equals three times of waterpipe total measurement (volume).
7, according to claim 1 or 3 or 4 or 5 or 6 described a kind of gas heaters, it is characterized in that float valve (17), contact-making switch (18) are contained in described storage tank (2) lining; Float valve (17) and contact-making switch (18) all are contained in storage tank (2) inside, and contact-making switch (18) respectively has one in the top and the bottom of storage tank (2);
On described water inlet manifold road (16) the water inlet direction into water electrically operated valve (19) is housed;
Float valve (17), contact-making switch (18) and water inlet electrically operated valve (19) are connected to bang-bang circuit jointly by lead, bang-bang circuit control realizes opening into water electrically operated valve (19) when float valve (17) contacts with the contact-making switch of bottom, closes into water electrically operated valve (19) when float valve (17) contacts with the contact-making switch at top.
8, a kind of gas heater as claimed in claim 1 is characterized in that, this gas heater does not have electric water pump (21), and the heater block of described traditional combustion type fast water heater (11) is traditional combustion type fast water heater heater block of manual ignition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101440343A CN100570228C (en) | 2006-11-24 | 2006-11-24 | A kind of gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101440343A CN100570228C (en) | 2006-11-24 | 2006-11-24 | A kind of gas heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987283A true CN1987283A (en) | 2007-06-27 |
| CN100570228C CN100570228C (en) | 2009-12-16 |
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ID=38184175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101440343A Expired - Fee Related CN100570228C (en) | 2006-11-24 | 2006-11-24 | A kind of gas heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN100570228C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528392A (en) * | 2013-10-25 | 2014-01-22 | 昆山市盛兴设备安装有限公司 | Hot water pot steam heating system |
| CN103868242A (en) * | 2014-02-26 | 2014-06-18 | 苏州市职业大学 | Water-saving control device |
| CN105674547A (en) * | 2016-04-06 | 2016-06-15 | 成都金鼎恒信科技有限公司 | Intelligent-circulating fuel gas water heater |
| CN108224752A (en) * | 2017-12-30 | 2018-06-29 | 佛山市集知汇科技有限公司 | It is a kind of can uninterrupted hot-water supply gas heater |
| CN109210793A (en) * | 2018-08-15 | 2019-01-15 | 江苏大学 | A kind of bathroom cold water recycling heating system |
| CN112050477A (en) * | 2020-10-21 | 2020-12-08 | 佛山市九零物联科技有限公司 | Water heater control system with zero hot water function and working method |
| CN112963961A (en) * | 2021-02-24 | 2021-06-15 | 位振风 | Scald preventing waste heat utilization equipment of domestic water heater |
| CN113108472A (en) * | 2021-05-26 | 2021-07-13 | 深圳市卓益节能环保设备有限公司 | Reserve type gas hot water system that possesses outage water supply function |
-
2006
- 2006-11-24 CN CNB2006101440343A patent/CN100570228C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528392A (en) * | 2013-10-25 | 2014-01-22 | 昆山市盛兴设备安装有限公司 | Hot water pot steam heating system |
| CN103868242A (en) * | 2014-02-26 | 2014-06-18 | 苏州市职业大学 | Water-saving control device |
| CN103868242B (en) * | 2014-02-26 | 2016-04-20 | 苏州市职业大学 | A kind of water-saving control device |
| CN105674547A (en) * | 2016-04-06 | 2016-06-15 | 成都金鼎恒信科技有限公司 | Intelligent-circulating fuel gas water heater |
| CN108224752A (en) * | 2017-12-30 | 2018-06-29 | 佛山市集知汇科技有限公司 | It is a kind of can uninterrupted hot-water supply gas heater |
| CN109210793A (en) * | 2018-08-15 | 2019-01-15 | 江苏大学 | A kind of bathroom cold water recycling heating system |
| CN109210793B (en) * | 2018-08-15 | 2021-04-16 | 泰州琅润达检测科技有限公司 | Bathroom cold water recovery heating system |
| CN112050477A (en) * | 2020-10-21 | 2020-12-08 | 佛山市九零物联科技有限公司 | Water heater control system with zero hot water function and working method |
| CN112050477B (en) * | 2020-10-21 | 2022-05-27 | 佛山市九零物联科技有限公司 | Water heater control system with zero hot water function and working method |
| CN112963961A (en) * | 2021-02-24 | 2021-06-15 | 位振风 | Scald preventing waste heat utilization equipment of domestic water heater |
| CN113108472A (en) * | 2021-05-26 | 2021-07-13 | 深圳市卓益节能环保设备有限公司 | Reserve type gas hot water system that possesses outage water supply function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100570228C (en) | 2009-12-16 |
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