CN115247898B - Constant temperature control method for re-water outlet of water heater - Google Patents
Constant temperature control method for re-water outlet of water heater Download PDFInfo
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- CN115247898B CN115247898B CN202210778770.3A CN202210778770A CN115247898B CN 115247898 B CN115247898 B CN 115247898B CN 202210778770 A CN202210778770 A CN 202210778770A CN 115247898 B CN115247898 B CN 115247898B
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- flow limiting
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000670 limiting effect Effects 0.000 claims abstract description 86
- 210000000078 claw Anatomy 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- 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
- F24H9/16—Arrangements for water drainage
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/174—Supplying heated water with desired temperature or desired range of temperature
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
-
- 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
Landscapes
- 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)
- Temperature-Responsive Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
A constant temperature control method for re-outlet water of water heater is characterized in that the water heater comprises a water inlet pipe, a current limiting servo device is arranged on the water inlet pipe, and the current limiting servo device comprises a current limiting module. The servo valve is additionally provided with a flow limiting module which is matched with control logic, so that the initial flow of the water heater is basically the minimum flow when water is discharged again, and the phenomenon of water temperature drop is greatly relieved. The flow limiting module belongs to mechanical flow limiting, and can quickly and accurately limit the initial flow of the re-discharged water, and can quickly relieve the discomfort of temperature drop of the re-discharged water due to the responsivity of electric control flow limiting.
Description
Technical Field
The invention relates to a water temperature control method of a water heater, in particular to a water temperature control method of re-outlet water.
Background
When the gas water heater is used, water is usually turned on and off, after hot water is turned on for a period of time, the inside of the pipeline is filled with hot water, but when boiled water is immediately boiled, ignition and fire transmission are needed during starting, and the combustion can be performed according to the water temperature required by a user after the processes are completed. The user will feel that the water temperature is hot at the faucet end (hot water left in the previous pipe) and then gradually cools down (cold water occurring during ignition), and then heats up again (water heater burning out as required). The water temperature experience is particularly poor. This phenomenon is called water outlet temperature drop.
Therefore, the servo valve is arranged at the water inlet port to realize steady flow so as to solve the problem, but the servo valve is adopted to realize electric control flow limiting, the flow limiting action can be carried out only after the flow sensor is required to feed back the flow, the flow can not be limited rapidly due to larger delay, and the effect of relieving the drop of the temperature of the discharged water is much worse.
Various flow limiting valves are also disclosed in the prior art, see China patent No. 201120518046.4, which discloses a flow limiting and stabilizing regulating valve (issued publication No. CN 202402740U); reference is also made to China patent No. 201921332320.1, a zero cold water check valve assembly with a flow restrictor, and a water heater (grant publication No. CN 210770444U).
Disclosure of Invention
The invention aims to provide a corresponding rapid water heater re-outlet constant temperature control method aiming at the technical current situation.
The technical scheme adopted for solving the technical problems is as follows: a constant-temperature control method for re-outlet water of water heater is characterized in that the water heater comprises a water inlet pipe, a current-limiting servo device is arranged on the water inlet pipe, and the current-limiting servo device comprises
The valve body is provided with an installation port at the upper end, a water inlet at the lower end and a water outlet at the lateral direction;
the servo motor is arranged on the mounting port of the valve body and can rotate positively and negatively, the power output end of the servo motor is provided with an output shaft which can move up and down, and the output shaft extends into the inner cavity of the valve body downwards;
the valve shell can be arranged in the valve body in a vertically movable mode, the valve shell is provided with an axial water inlet cavity corresponding to the water inlet, a water outlet hole communicated with the water outlet is formed in the lateral direction of the axial water inlet cavity, and the valve shell can block water flow entering from the water inlet of the valve body from directly flowing to the water outlet of the valve body when moving downwards to the maximum limit;
the reset piece is arranged in the valve body and always forces the valve core to keep away from the trend of the servo motor;
the flow limiting module is arranged on the axial water inlet cavity of the valve housing and is provided with a water inlet port and a flow limiting port which are communicated with the water inlet of the valve body, and the flow limiting port is communicated with the water outlet of the valve body; and
the pressing sleeve is arranged in the valve body and positioned between the output shaft and the current limiting module;
under the normal use state, the valve shell is positioned at the high position of the valve body, the water inlet is completely opened, the flow limiting module does not work, and the initial flow is normal flow;
after the hot water tap is closed for one-time heating combustion, the valve housing moves to the lowest position of the valve body immediately, so that the valve port is completely closed; and recording time;
(1) if the hot water tap is started again within the set time, in the initial stage of water re-outlet, water flow can only flow out through the flow limiting module as the valve housing is at the lowest position, and the water flow reaches the maximum set flow; the water heater starts the ignition and fire transmission process, and after the ignition and fire transmission process is finished, the valve shell is controlled to move, so that the valve shell moves upwards slowly, the valve port is opened gradually until the valve port moves to the uppermost side, and the valve port is opened completely;
(2) if the hot water tap is started again after the set time is exceeded, the valve shell moves to the high position of the valve body, and the valve port is completely opened; and exiting the control mode of water discharge again.
Preferably, when the water heater burns at normal constant temperature, if the water flow is too large, the flow limiting servo device pushes the valve housing to move downwards to a certain extent so as to reduce the water flow and enable the water outlet temperature to reach the set temperature when the water heater cannot burn to the set temperature even under the maximum load. That is, the current-limiting servo device can also cover a servo constant temperature function besides the problem of water re-outlet treatment.
Preferably, the current limiting module comprises
The movable cover is axially hollow and can be vertically movably arranged on a port of an axial water inlet cavity of the valve casing;
the upper cover is arranged above the movable cover and is provided with a water outlet, and a flow limiting area is formed by the upper cover and the movable cover;
the flow limiting body is axially hollow, is arranged in the flow limiting area and can move up and down along with the movable cover, and the upper port of the flow limiting body is matched with the water outlet port of the movable cover to form a limited flow port; and
the flow limiting spring is arranged in the flow limiting area and gives an acting force opposite to the water inlet direction to the flow limiting body.
Further, the front end face of the lower pressing sleeve is close to the edge and extends forwards to form a plurality of pressing claws, a water through groove is formed between every two adjacent pressing claws, and the upper end face of the upper cover is provided with an annular abutting surface for the pressing claws to abut against and match.
Further, the side wall of the flow limiting body is provided with a pressure relief hole.
Preferably, the inner wall of the valve body is provided with a shoulder, the outer wall of the valve housing is provided with an annular groove with a downward port, and the reset piece is a reset spring which is arranged in the annular groove and the bottom of the reset spring abuts against the shoulder.
Compared with the prior art, the invention has the advantages that: the servo valve is additionally provided with a flow limiting module which is matched with control logic, so that the initial flow of the water heater is basically the minimum flow when water is discharged again, and the phenomenon of water temperature drop is greatly relieved. The normal initial flow can be restored under the general condition, and the initial flow problem of the user when water is used under the general condition is reduced as much as possible.
The flow limiting module belongs to mechanical flow limiting, and can quickly and accurately limit the initial flow of the re-discharged water, and can quickly relieve the discomfort of temperature drop of the re-discharged water due to the responsivity of electric control flow limiting.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
FIG. 2 is an enlarged view of the current limiting servo device in FIG. 1.
Fig. 3 is an exploded view of fig. 2.
Fig. 4 is an enlarged exploded view of the flow restricting module.
Fig. 5 is an exploded view of the other view of fig. 4.
FIG. 6 is a schematic view of the valve port after opening.
FIG. 7 is a schematic view of the valve after closing.
FIG. 8 is a schematic view of the movable cover in a low position after the valve port is closed.
FIG. 9 is a schematic view of the movable cover in a raised position after the valve port is closed.
Fig. 10 is a control flow diagram of an embodiment.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1, the water heater in this embodiment includes a water inlet pipe 101 and an electric control assembly 102, wherein the water inlet pipe 101 is provided with a flow-limiting servo device 10 and a water flow sensor 103.
As shown in fig. 2, 3, 6 and 7, the flow limiting servo device in this embodiment includes a valve body 2, a servo motor 1, a valve housing 4, a restoring member 6, a flow limiting module 5 and a pressing table 3.
The upper end of the valve body 2 is provided with an installation port, the lower end is provided with a water inlet 21, the lateral direction is provided with a water outlet 22, and the inner wall of the valve body 2 is provided with a shoulder 23; the servo motor 1 is arranged on the mounting port of the valve body 2 and can rotate positively and negatively, the power output end of the servo motor 1 is provided with an output shaft 11 which can move up and down, and the output shaft 11 extends downwards into the inner cavity of the valve body 2.
The valve housing 4 is arranged in the valve body 2 in a vertically movable manner, the valve housing 4 is provided with an axial water inlet cavity 41 corresponding to the water inlet 21, a water outlet hole 42 communicated with the water outlet 22 is laterally formed in the axial water inlet cavity 41, and the valve housing 4 can block water flow entering from the water inlet 21 of the valve body 2 from directly flowing to the water outlet 22 of the valve body 2 when being moved downwards to the maximum extent; the outer wall of the valve housing 4 has a downwardly ported annular groove 43.
The reset piece 6 is arranged in the valve body 2 and always forces the valve core to keep away from the trend of the servo motor 1; the return element 6 in this embodiment is a return spring which is arranged in the annular groove 43 and the bottom of which abuts against the shoulder 23.
The flow limiting module 5 is arranged on the axial water inlet cavity 41 of the valve housing 4, the flow limiting module 5 is provided with a water inlet port communicated with the water inlet 21 of the valve body 2 and a flow limiting port 5a, and the flow limiting port 5a is communicated with the water outlet 22 of the valve body 2; and
the pressing sleeve 3 is arranged in the valve body 2 and is positioned between the output shaft 11 and the flow limiting module 5. The front end surface of the lower pressing sleeve 3 in the embodiment is provided with a plurality of pressing claws 31 extending forward near the edge, and a water passage groove 32 is arranged between the adjacent pressing claws 31.
As shown in fig. 4, 5, 8 and 9, the flow limiting module 5 in this embodiment includes a movable cover 52, an upper cover 51, a flow limiting body 53, a flow limiting spring 54, a sealing ring 56 and a backing ring 55.
The movable cover 52 is axially hollow and can be vertically movably arranged on the port of the axial water inlet cavity 41 of the valve housing 4; an upper cover 51 disposed above the movable cover 52 and having a water outlet 511, wherein the upper cover 51 and the movable cover 52 form a flow-limiting region; the upper end surface of the upper cover 51 has an annular abutment surface 512 against which the pressing claws 31 are abutted.
The flow limiting body 53 is hollow in the axial direction, is arranged in the flow limiting area and can move up and down along with the movable cover 52, and the upper port of the flow limiting body 53 is matched with the water outlet 511 of the movable cover 52 to form a limited flow port 5a; the pressure release hole 531 has been seted up to the side wall of restriction body 53, and when the restriction body moved upwards, the liquid of restriction body can follow the pressure release hole and flow out when the pressurized, balanced restriction body internal and external pressure for the restriction body removes more smoothly.
The flow limiting spring 54 is provided in the flow limiting area and gives the flow limiting body 53 a force opposite to the inflow direction.
Working principle: the servo motor is fixed relative to the valve body, and in an initial state, the reset spring acts on the valve housing, and the valve housing is opened, so that the output shaft is pushed to move up and down when the servo motor operates as shown in fig. 6. The output shaft can push the pressing sleeve, the pressing sleeve is pressed on the upper cover of the flow limiting module, and the upper cover of the flow limiting module is finally pressed on the valve casing, so that the valve casing and parts inside the valve casing are pushed to move downwards together when the output shaft moves downwards, the reset spring is compressed at the moment, the valve port is contracted, the water flow is also reduced, and the valve port 2a is closed. At this time, water can only flow into the water heater through the flow limiting module. As shown in fig. 8, in the initial state, the movable cover is positioned at a low position, and water flows through the water outlet of the flow-limiting port flow-passage valve body; when the water flow increases and passes through the flow limiting module, the movable cover moves upwards under the flushing of a certain water flow and pushes the flow limiting body to move upwards, the upper part of the flow limiting body is close to the upper cover, the flow limiting opening is narrowed, and therefore the flow is limited to a certain value, and the value can be designed in advance through the rigidity and the precompression amount of the flow limiting spring. The maximum flow rate of the flow restriction module is thus limited to the designed flow rate value.
As shown in fig. 7. When the motor drives the output shaft to move upwards, the valve shell moves upwards under the pushing of the reset spring, and parts in the valve shell move upwards simultaneously, so that the valve port is opened, water flow does not pass through the flow limiting module, but directly flows through the valve port, and the flow returns to the normal condition.
The flow limiting module is used for limiting the re-outlet water flow, and the flow limiting module is not directly limited by a servo valve, mainly because the flow limiting module belongs to mechanical flow limiting, the flow limiting module can rapidly and accurately limit the initial re-outlet water flow. The servo valve belongs to electric control flow limiting, the flow limiting action can be performed only after the flow sensor feeds back the flow, the flow can not be limited rapidly due to larger delay, and therefore the effect of relieving the temperature drop of the discharged water is much worse. The current limiting servo device is arranged in the water heater, and the temperature drop phenomenon of the water heater in the water discharging process can be greatly improved by matching with certain control logic.
In the normal use state, the valve housing is positioned at the high position of the valve body, the water inlet is completely opened, the flow limiting module is not functional, and the initial flow is normal flow at the moment;
after the hot water tap is closed for one-time heating combustion, the valve housing moves to the lowest position of the valve body immediately, so that the valve port is completely closed; and recording time;
(1) if the hot water tap is started again within the set time (3 min), at the initial stage of water re-outlet, water flow can only flow out through the flow limiting module as the valve housing is at the lowest position, and the water flow reaches the maximum set flow (2 l/min); the water heater starts the ignition and fire transmission process, and after the ignition and fire transmission process is finished, the valve shell is controlled to move, so that the valve shell moves upwards slowly, the valve port is opened gradually until the valve port moves to the uppermost side, and the valve port is opened completely;
(2) if the set time (3 min) is exceeded, the hot water tap is started again, the valve shell moves to the high position of the valve body, and the valve port is completely opened; and exiting the control mode of water discharge again.
Preferably, when the water heater burns at normal constant temperature, if the water flow is too large, the flow limiting servo device pushes the valve housing to move downwards to a certain extent so as to reduce the water flow and enable the water outlet temperature to reach the set temperature when the water heater cannot burn to the set temperature even under the maximum load. That is, the current-limiting servo device can also cover a servo constant temperature function besides the problem of water re-outlet treatment.
Claims (6)
1. A constant temperature control method for re-outlet water of a water heater is characterized in that the water heater comprises a water inlet pipe (101), a current-limiting servo device (10) is arranged on the water inlet pipe (101), and the current-limiting servo device (10) comprises
The valve body (2) is provided with an installation port at the upper end, a water inlet (21) at the lower end and a water outlet (22) at the lateral direction;
the servo motor (1) is arranged on the mounting port of the valve body (2) and can rotate forwards and backwards, an output end of power of the servo motor (1) is provided with an output shaft (11) which can move up and down, and the output shaft (11) downwards extends into an inner cavity of the valve body (2);
a valve housing (4) which is arranged in the valve body (2) in a vertically movable manner, wherein the valve housing (4) is provided with an axial water inlet cavity (41) corresponding to the water inlet (21), a water outlet hole (42) communicated with the water outlet (22) is laterally formed in the axial water inlet cavity (41), and the valve housing (4) can block water flow entering from the water inlet (21) of the valve body (2) from directly flowing to the water outlet (22) of the valve body (2) when the valve housing (4) moves downwards to the maximum extent;
the reset piece (6) is arranged in the valve body (2) and always forces the valve core to keep away from the trend of the servo motor (1);
the flow limiting module (5) is arranged on the axial water inlet cavity (41) of the valve housing (4), the flow limiting module (5) is provided with a water inlet port and a flow limiting port (5 a) which are communicated with the water inlet (21) of the valve body (2), and the flow limiting port (5 a) is communicated with the water outlet (22) of the valve body (2); and
a pressing sleeve (3) arranged in the valve body (2) and positioned between the output shaft (11) and the flow limiting module (5);
under the normal use state, the valve shell is positioned at the high position of the valve body, the water inlet is completely opened, the flow limiting module does not work, and the initial flow is normal flow;
after the hot water tap is closed for one-time heating combustion, the valve housing moves to the lowest position of the valve body immediately, so that the valve port is completely closed; and recording time;
(1) if the hot water tap is started again within the set time, in the initial stage of water re-outlet, water flow can only flow out through the flow limiting module as the valve housing is at the lowest position, and the water flow reaches the maximum set flow; the water heater starts the ignition and fire transmission process, and after the ignition and fire transmission process is finished, the valve shell is controlled to move, so that the valve shell moves upwards slowly, the valve port is opened gradually until the valve port moves to the uppermost side, and the valve port is opened completely;
(2) if the hot water tap is started again after the set time is exceeded, the valve shell moves to the high position of the valve body, and the valve port is completely opened; and exiting the control mode of water discharge again.
2. The water heater re-outlet thermostatic control method according to claim 1, wherein the flow limiting servo device pushes the valve housing to move down to a certain extent to reduce the water flow rate so that the outlet water temperature reaches the set temperature if the water flow rate is excessive during normal thermostatic combustion of the water heater, resulting in that the water heater cannot burn to the set temperature even under maximum load.
3. The water heater re-outlet thermostatic control method according to claim 1, characterized in that said flow limiting module (5) comprises
The movable cover (52) is axially hollow and can be vertically movably arranged on the port of the axial water inlet cavity (41) of the valve casing (4);
an upper cover (51) arranged above the movable cover (52) and provided with a water outlet port (511), wherein the upper cover (51) and the movable cover (52) form a flow limiting area;
a flow limiting body (53) which is axially hollow, is arranged in the flow limiting area and can move up and down along with the movable cover (52), and the upper port of the flow limiting body (53) is matched with the water outlet port (511) of the movable cover (52) to form a limited flow port (5 a); and
and a flow limiting spring (54) which is arranged in the flow limiting area and gives a force opposite to the water inlet direction to the flow limiting body (53).
4. The water heater re-outlet constant temperature control method according to claim 3, wherein the front end surface of the lower pressing sleeve (3) is provided with a plurality of pressing claws (31) extending forwards near the edge, a water through groove (32) is arranged between the adjacent pressing claws (31), and the upper end surface of the upper cover (51) is provided with an annular abutting surface (512) for abutting and matching the pressing claws (31).
5. A water heater re-outlet thermostatic control method according to claim 3, characterized in that the side wall of the fluid limiting body (53) is provided with a pressure relief hole (531).
6. The water heater re-outlet constant temperature control method according to claim 1, wherein the inner wall of the valve body (2) is provided with a shoulder (23), the outer wall of the valve housing (4) is provided with an annular groove (43) with a downward port, and the reset piece (6) is a reset spring which is arranged in the annular groove (43) and the bottom of the reset spring is propped against the shoulder (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210778770.3A CN115247898B (en) | 2022-06-30 | 2022-06-30 | Constant temperature control method for re-water outlet of water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210778770.3A CN115247898B (en) | 2022-06-30 | 2022-06-30 | Constant temperature control method for re-water outlet of water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115247898A CN115247898A (en) | 2022-10-28 |
| CN115247898B true CN115247898B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210778770.3A Active CN115247898B (en) | 2022-06-30 | 2022-06-30 | Constant temperature control method for re-water outlet of water heater |
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| CN (1) | CN115247898B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05250044A (en) * | 1992-03-06 | 1993-09-28 | Matsushita Electric Ind Co Ltd | Hot water supplying device |
| CN202216414U (en) * | 2011-07-26 | 2012-05-09 | 能率(中国)投资有限公司 | Water temperature/flow rate automatic regulating device |
| CN107314533A (en) * | 2017-07-25 | 2017-11-03 | 曹文杰 | A kind of gas heater of constant-temperature effluent |
| CN209263374U (en) * | 2018-12-17 | 2019-08-16 | 成都前锋电子有限责任公司 | A kind of gas heater of the bypass pipe with water transfer proportioning valve |
| CN111426051A (en) * | 2020-03-25 | 2020-07-17 | 华帝股份有限公司 | Gas water heater with current limiting device and control method thereof |
| JP2020197332A (en) * | 2019-05-31 | 2020-12-10 | パーパス株式会社 | Hot water supply method, hot water storage unit, hot water supply system and program |
| EP3859228A1 (en) * | 2020-01-31 | 2021-08-04 | Gerdes Holding GmbH & Co. KG | Continuous flow heater for hot water preparation |
| CN216744898U (en) * | 2021-12-09 | 2022-06-14 | 王晨 | Water storage type constant temperature electric water heater for heating hot water pipeline terminal |
-
2022
- 2022-06-30 CN CN202210778770.3A patent/CN115247898B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05250044A (en) * | 1992-03-06 | 1993-09-28 | Matsushita Electric Ind Co Ltd | Hot water supplying device |
| CN202216414U (en) * | 2011-07-26 | 2012-05-09 | 能率(中国)投资有限公司 | Water temperature/flow rate automatic regulating device |
| CN107314533A (en) * | 2017-07-25 | 2017-11-03 | 曹文杰 | A kind of gas heater of constant-temperature effluent |
| CN209263374U (en) * | 2018-12-17 | 2019-08-16 | 成都前锋电子有限责任公司 | A kind of gas heater of the bypass pipe with water transfer proportioning valve |
| JP2020197332A (en) * | 2019-05-31 | 2020-12-10 | パーパス株式会社 | Hot water supply method, hot water storage unit, hot water supply system and program |
| EP3859228A1 (en) * | 2020-01-31 | 2021-08-04 | Gerdes Holding GmbH & Co. KG | Continuous flow heater for hot water preparation |
| CN111426051A (en) * | 2020-03-25 | 2020-07-17 | 华帝股份有限公司 | Gas water heater with current limiting device and control method thereof |
| CN216744898U (en) * | 2021-12-09 | 2022-06-14 | 王晨 | Water storage type constant temperature electric water heater for heating hot water pipeline terminal |
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| Publication number | Publication date |
|---|---|
| CN115247898A (en) | 2022-10-28 |
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