CN213066524U - Constant temperature gas water heater - Google Patents
Constant temperature gas water heater Download PDFInfo
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- CN213066524U CN213066524U CN202021152573.3U CN202021152573U CN213066524U CN 213066524 U CN213066524 U CN 213066524U CN 202021152573 U CN202021152573 U CN 202021152573U CN 213066524 U CN213066524 U CN 213066524U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 162
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 238000005057 refrigeration Methods 0.000 claims abstract description 6
- 239000004065 semiconductor Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 5
- 108010066114 cabin-2 Proteins 0.000 description 19
- 238000000034 method Methods 0.000 description 10
- 238000007710 freezing Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 208000001034 Frostbite Diseases 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The utility model discloses a constant temperature gas heater, wherein constant temperature gas heater includes heat exchanger, control by temperature change cabin and controller, wherein the water inlet and the advance water piping connection of heat exchanger, the delivery port of heat exchanger with the water inlet in control by temperature change cabin is connected the control by temperature change cabin is provided with the refrigeration heating element outward, the controller respectively with the heat exchanger with refrigeration heating element electric connection, it can effectively solve present gas heater open stop the temperature neglect the cold problem of neglecting hot.
Description
Technical Field
The utility model relates to a water heater technical field especially relates to a constant temperature gas heater.
Background
The gas water heater sold in the market at present can reach the previous bath temperature after a period of time after the water valve is closed and the water valve is restarted in the using process, so that the bath comfort of a user can be influenced. Specifically, the method comprises the following steps:
1) after the water valve is closed, the residual heat of the heat exchanger continues to heat the stored water in the machine, so that the temperature of the stored water is higher than the set temperature, and the high-temperature stored water flows out firstly after the water valve is boiled again;
2) a certain amount of cold water needs to flow out in the process of re-opening the water valve until the inlet water temperature reaches a set value.
Whether the gas water heater is constant in temperature or not is always the most critical factor for measuring the excellent performance of the water heater, and the constant temperature performance is the most direct experience for the use comfort of users. At present, the constant temperature performance is mainly ensured by two aspects:
firstly, the constant temperature algorithm of the water heater matches the optimal heat load interval by calculating the temperature difference of inlet and outlet water and monitoring the water flow, so that the outlet water temperature is consistent with the set temperature expected by a user. However, the constant temperature algorithm only adjusts the load by controlling during the use process of the user, but the constant temperature algorithm has an unobvious effect on the control of the temperature fluctuation of the boiled water and the frequent water cut-off during the use process of the user, and even has a great influence on the use comfort of the user within a period of water cut-off and boiling.
And secondly, a bypass pipeline is arranged at the water outlet end of the heat exchanger, and the temperature requirement is met through compensation. However, the bypass line compensation compensates the temperature difference between the cold water and the hot water, but the problem of excessive fluctuation of the water cut-off temperature cannot be solved well.
The problem of overlarge temperature fluctuation of the water heater during water cut-off and water boiling is solved by temperature compensation, the water outlet temperature is difficult to control by controlling the load, and the heating speed is too slow.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the problems that exist among the prior art to a certain extent at least, for this reason, the utility model provides a constant temperature gas water heater, it can effectively be solved present gas water heater and open and stop the problem that the temperature is neglected cold and suddenly hot.
The above purpose is realized by the following technical scheme:
a constant-temperature gas water heater comprises a heat exchanger, a temperature control cabin and a controller, wherein a water inlet of the heat exchanger is connected with a water inlet pipe, a water outlet of the heat exchanger is connected with a water inlet of the temperature control cabin, a refrigerating and heating element is arranged outside the temperature control cabin, and the controller is electrically connected with the heat exchanger and the refrigerating and heating element respectively.
In some embodiments, a temperature sensor is disposed on the temperature-controlled cabin, and the temperature sensor is electrically connected to the controller.
In some embodiments, the cooling and heating element is a semiconductor cooling and heating sheet.
In some embodiments, the semiconductor cooling and heating sheet includes an intermediate layer and a ceramic substrate on both sides of the intermediate layer, wherein the intermediate layer includes a Cu substrate, a P-type semiconductor, and an N-type semiconductor.
In some embodiments, an inlet water temperature sensor and a water flow sensor are disposed on the inlet pipe.
Compared with the prior art, the utility model discloses an at least including following beneficial effect:
1. the utility model provides a constant temperature gas heater, it can effectively solve present gas heater and open and stop the problem that the temperature is neglected cold and suddenly hot.
Drawings
FIG. 1 is a schematic structural diagram of a gas water heater in an embodiment;
FIG. 2 is a schematic flow chart of a control method in the embodiment;
FIG. 3 is a schematic view of the logic of the gas water heater during water cut-off and temperature rise in the embodiment;
FIG. 4 is a schematic view of the automatic anti-freezing operation of the gas water heater in the embodiment.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.
The first embodiment is as follows: as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present embodiment provides a constant temperature gas water heater, which includes a heat exchanger 1, a temperature control cabin 2 and a controller 3, wherein a water inlet of the heat exchanger 1 is connected to a water inlet pipe 4, a water outlet of the heat exchanger 1 is connected to a water inlet of the temperature control cabin 2, a cooling and heating element 5 is disposed outside the temperature control cabin 2, and the controller 3 is electrically connected to the heat exchanger 1 and the cooling and heating element 5, respectively.
The embodiment provides a constant temperature gas heater, and it can effectively solve present gas heater and open and stop the problem that the temperature suddenly changes cold and suddenly hot through fixing refrigeration heating element 5 on control by temperature change cabin 2. Specifically, the temperature of the water inside the gas water heater is monitored through a refrigerating and heating element 5 fixed on the temperature control cabin 2 and the water outlet end of the gas water heater, and then the temperature rise and the temperature drop of the gas water heater after water cut are compensated through a water cut restart control logic, so that real-time constant temperature is realized; in addition, in a low-temperature environment, water in the temperature control cabin 2 can be heated to enable the water temperature to be higher than the freezing point, and internal components are protected from frost cracking.
In addition, the structure is simple, and the installation and the use are convenient.
In addition, the control mode is flexible, and the constant temperature requirements of different upgrading machine types under the full working mode can be met.
In this embodiment, the temperature sensor 6 is arranged on the temperature control cabin 2, the temperature sensor 6 is electrically connected with the controller 3, the water outlet temperature of the gas water heater can be effectively monitored through the arranged temperature sensor 6, and the temperature rise and temperature drop of the gas water heater after water cut can be compensated by controlling the refrigerating and heating element 5 through judging whether the water outlet temperature of the gas water heater reaches the preset temperature or not, so that the real-time constant temperature of the gas water heater is realized.
In this embodiment, the refrigerating and heating element 5 employs a semiconductor refrigerating and heating sheet, and the semiconductor refrigerating and heating sheet can efficiently compensate for temperature rise and temperature drop of the gas water heater after water supply is cut off, thereby realizing real-time constant temperature of the gas water heater.
Further, the semiconductor refrigerating and heating plate comprises an intermediate layer and ceramic substrates positioned on two sides of the intermediate layer, wherein the intermediate layer comprises a Cu substrate, a P-type semiconductor and an N-type semiconductor. Specifically, the two sides of the refrigerating and heating sheet are ceramic substrates which are selected mainly in consideration of the insulation, heat conduction and temperature resistance conditions; the intermediate layer is a Cu-based, P-type, N-type semiconductor array block, and its operation is controlled by inputting DC5V power to the N/P connection lead. The wiring terminal is connected with the controller lead terminal of the whole machine.
The structure of the refrigerating and heating plate is realized by applying current in a certain direction to the N level and the P level, electrons, P and holes generated by the N level move directionally to form loop current, heat change can be generated at the cross joint end of the two electrodes at the same time, when the N level is connected to the anode, the cross joint end absorbs heat, the temperature of the peripheral space position of the cross joint end is reduced, the heat loss of the area is positioned at the cold end, and the heat accumulation of the opposite side is positioned at the hot end; when the N-level negative electrode is connected, heat is released at the joint end, so that the temperature of the peripheral space position of the joint end is increased, the heat increase of the area is at the hot end, and the heat accumulation is at the cold end on the opposite side; different power of the refrigerating and heating sheets and the number of the N-P pairs can be selected to realize different temperature difference requirements, for example, the refrigerating and heating rate under the condition of selecting input voltage DC5V and 4A can reach 14.8, and the maximum temperature difference can reach 67K.
In this embodiment, be provided with into water temperature sensor 7 on inlet tube 4, water flow sensor 8 and water transfer valve 9, controller 3 respectively with into water temperature sensor 7, water flow sensor 8 and water transfer valve 9 electric connection, wherein it is used for real-time supervision gas heater's temperature of intaking to intake water temperature sensor 7, water flow sensor 8 adopts hall element to be used for real-time detection gas heater's the inflow flow, water transfer valve 9 is used for adjusting gas heater's the inflow flow, through the temperature sensor 7 of intaking that sets up, water flow sensor 8 and water transfer valve 9 can real-time supervision gas heater's operating condition, be convenient for controller 3 control gas heater carries out work, satisfy different users ' user demand.
Example two: as shown in fig. 1 and fig. 2, the present embodiment provides a control method for a constant temperature gas water heater, the control method includes the following steps:
step S101, when the real-time inlet water flow is smaller than the preset starting water flow, judging whether the real-time outlet water temperature is larger than the preset temperature;
step S102, when the real-time outlet water temperature is lower than the preset temperature, controlling the refrigerating and heating element 5 to work to heat the temperature control cabin 2 so as to enable the water temperature in the temperature control cabin 2 to reach the preset temperature;
step S103, when the real-time outlet water temperature is higher than the preset temperature, controlling the refrigerating and heating element 5 to work to cool the temperature control cabin 2 so as to enable the water temperature in the temperature control cabin 2 to reach the preset temperature;
step S104, judging whether the working time of the refrigerating and heating element 5 reaches the preset time;
step S105, when the working time of the refrigerating and heating element 5 reaches the preset time, judging whether the real-time outlet water temperature reaches the preset temperature range;
and step S106, controlling the refrigerating and heating element 5 to work according to the judgment result of whether the real-time outlet water temperature reaches the preset temperature range.
The control method of the constant-temperature gas water heater can effectively solve the problem that the water temperature is suddenly cold and hot when the gas water heater is started and stopped at present, and is beneficial to improving the use experience of users.
Further, the step of determining whether the working time of the cooling and heating element 5 reaches the preset time includes:
when the real-time outlet water temperature is lower than the preset temperature, controlling the refrigerating and heating element 5 to work to heat the temperature control cabin 2;
judging whether the heating working time of the refrigerating and heating element 5 reaches the preset time or not;
the preset time is the time required for the heating water storage quantity to rise (the preset temperature-the real-time outlet water temperature) after water supply is cut off. The design is reasonable and ingenious, and the water temperature of the stored water after the water of the gas water heater is cut off can reach the preset temperature.
Further, the step of determining whether the working time of the cooling and heating element 5 reaches the preset time includes:
when the real-time outlet water temperature is higher than the preset temperature, controlling the refrigerating and heating element 5 to work to cool the temperature control cabin;
judging whether the refrigerating working time of the refrigerating and heating element 5 reaches a preset time or not;
the preset time is the time required by the reduction of the cooling water storage amount after water is cut off (real-time water outlet temperature-preset temperature). The design is reasonable and ingenious, and the water temperature of the stored water after the water of the gas water heater is cut off can reach the preset temperature.
In this embodiment, the step of determining whether the real-time outlet water temperature reaches the preset temperature range specifically includes:
if the difference value between the real-time outlet water temperature and the preset temperature is smaller than the preset threshold value, the real-time outlet water temperature is judged to reach the preset temperature range, and then the refrigeration and heating element 5 can be controlled to stop working, and the operation is finished.
If the difference value between the real-time outlet water temperature and the preset temperature is larger than the preset threshold value, the real-time outlet water temperature is judged not to reach the preset temperature range, when the real-time outlet water temperature is smaller than the preset temperature, the step S102 is returned, namely the refrigerating and heating element 5 is controlled to work to heat the temperature control cabin 2, and when the real-time outlet water temperature is larger than the preset temperature, the step S103 is returned, namely the refrigerating and heating element 5 is controlled to work to cool the temperature control cabin 2.
As shown in fig. 3, the following description is made of the processing logic of the gas water heater of the present embodiment for water cut-off and temperature rise:
Qsthe water flow rate is real-time inlet water flow rate, Q is adjustable preset starting water flow rate, and the default is 2.5L/min; t issThe real-time outlet water temperature is T, and the T is a preset temperature; when the gas water heater is in the standby state of water heat supply cut-off, the gas water heater is monitoredReal-time water inlet flow QsWhen the temperature is lower than Q (2.5L/min), the real-time water outlet temperature T is further measured at the momentsJudging with a preset temperature T when T issWhen the temperature control cabin is higher than T, if the water in the temperature control cabin 2 directly flows out of the gas water heater at the moment, the hidden danger of scalding can be caused, the refrigerating and heating sheet is started at the moment to enable the sheet contact end to work as a cold end, and the T is reduced according to the heating water storage quantity after water cut-offsTime T required for TsMaking a second judgment, tsFor the working time, t is the set time needed for theoretically calculating the temperature drop, when t issStopping working after the set temperature reduction required time T is reached, wherein the water temperature in the temperature control cabin 2 is the preset temperature T, so that the constant temperature requirement of water cut-off temperature reduction is realized; when the water is cut off and restarted, the stored water with the previous section of temperature being the preset temperature T flows out of the gas water heater, the gas water heater is not ignited to start, and a section of unheated cold water directly flows out. At the moment, the refrigerating and heating plate is started to enable the plate contact end to work as the hot end, namely, the phases are opposite, and the time T is required according to the temperature rise T-Ts of the water quantity flowing in from the time of ignition to the time of sensing flamesMaking a secondary judgment when t issAnd the work is stopped after the time T required by the set temperature rise is reached, so that the water in the temperature control cabin 2 reaches the set temperature T, and the requirement of restarting the temperature rise for constant temperature is met.
Preferably, the control method further includes the steps of:
when the real-time inlet water flow is 0L/min and the real-time outlet water temperature is lower than the preset anti-freezing temperature, controlling the refrigerating and heating element 5 to work to heat the temperature control cabin 2;
and when the real-time outlet water temperature reaches (the preset anti-freezing temperature + the preset temperature rise value), controlling the refrigerating and heating element 5 to stop working.
As shown in fig. 4, the automatic anti-freezing operation principle of the gas water heater of this embodiment is described as follows:
the precondition for judging the automatic anti-freezing working principle is that the water flow is 0L/min,
further identifying the water temperature of the water outlet end or the water inlet end when the temperature of the water outlet end is TsWhen the temperature is lower than 4 ℃, the refrigerating and heating plate is started, and the contact end of the plate is used as the hot endThe temperature of the cold water in the temperature control cabin 2 is properly higher than the freezing point of the water by heating the cold water, and when the temperature T of the water outlet end is higher than the freezing point of the watersWhen reaching (K +4) degree C, wherein K is the temperature rise value of the mode of preventing frostbite, can carry out manual setting according to different environment, just stop switching on to this continuous reciprocating cycle has realized the automatic function of preventing frostbite of gas heater under cold circumstance, has effectively avoided the frost crack of components and parts in the water route.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (5)
1. The utility model provides a constant temperature gas heater, includes heat exchanger (1), temperature control cabin (2) and controller (3), wherein the water inlet and a inlet tube (4) of heat exchanger (1) are connected, the delivery port of heat exchanger (1) with the water inlet in temperature control cabin (2) is connected, its characterized in that temperature control cabin (2) are provided with refrigeration heating element (5) outward, controller (3) respectively with heat exchanger (1) with refrigeration heating element (5) electric connection.
2. A thermostatic gas water heater according to claim 1, characterized in that a temperature sensor (6) is arranged on the temperature controlled compartment (2), said temperature sensor (6) being electrically connected to the controller (3).
3. A thermostatic gas water heater according to claim 1, characterized in that the cooling and heating element (5) is a semiconductor cooling and heating sheet.
4. The constant-temperature gas water heater according to claim 3, wherein the semiconductor refrigerating and heating sheet comprises an intermediate layer and a ceramic substrate positioned on two sides of the intermediate layer, wherein the intermediate layer comprises a Cu substrate, a P-type semiconductor and an N-type semiconductor.
5. A thermostatic gas water heater according to claim 1, 2, 3 or 4, characterized in that a water inlet temperature sensor (7) and a water flow sensor (8) are provided on the water inlet pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021152573.3U CN213066524U (en) | 2020-06-19 | 2020-06-19 | Constant temperature gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021152573.3U CN213066524U (en) | 2020-06-19 | 2020-06-19 | Constant temperature gas water heater |
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| CN213066524U true CN213066524U (en) | 2021-04-27 |
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| CN202021152573.3U Active CN213066524U (en) | 2020-06-19 | 2020-06-19 | Constant temperature gas water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878994A (en) * | 2020-06-19 | 2020-11-03 | 华帝股份有限公司 | Constant-temperature gas water heater and control method thereof |
| CN115183468A (en) * | 2022-07-27 | 2022-10-14 | 中山市恒乐电器有限公司 | Anti-freezing gas water heater |
-
2020
- 2020-06-19 CN CN202021152573.3U patent/CN213066524U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878994A (en) * | 2020-06-19 | 2020-11-03 | 华帝股份有限公司 | Constant-temperature gas water heater and control method thereof |
| CN115183468A (en) * | 2022-07-27 | 2022-10-14 | 中山市恒乐电器有限公司 | Anti-freezing gas water heater |
| CN115183468B (en) * | 2022-07-27 | 2023-12-22 | 中山市恒乐电器有限公司 | Antifreezing gas water heater |
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