CN105605786B - constant temperature gas water heater of remote control temperature setting value - Google Patents
constant temperature gas water heater of remote control temperature setting value Download PDFInfo
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- CN105605786B CN105605786B CN201610000441.0A CN201610000441A CN105605786B CN 105605786 B CN105605786 B CN 105605786B CN 201610000441 A CN201610000441 A CN 201610000441A CN 105605786 B CN105605786 B CN 105605786B
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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
- 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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- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses a constant-temperature gas water heater capable of remotely controlling a temperature set value, which comprises two hot water outlets and a cold water inlet, wherein the temperature set value of the constant-temperature gas water heater is changed by adopting a method of remotely controlling the flow of two paths of hot water through a water valve; the inlet cold water flow of the cold water inlet and the outlet hot water flow of the first hot water outlet are detected by Hall water flow sensors; the constant-temperature gas water heater for remotely controlling the temperature set value controls the temperature set value of the constant-temperature gas water heater according to the pulse frequency ratio output by the Hall water flow sensor. The device does not need a wired or wireless remote controller, can realize the remote control of the hot water temperature set value of the constant-temperature gas water heater, and has stable and reliable control result.
Description
Technical Field
the invention relates to a constant-temperature gas water heater, in particular to a constant-temperature gas water heater capable of remotely controlling a temperature set value.
Background
The constant temperature gas water heater can keep the temperature of the outlet water constant, but if the temperature is not properly set, particularly when a user takes a shower, the temperature of the gas water heater without a wireless remote control or a remote wire control cannot be adjusted, and the gas water heater is easy to extinguish by adding cold water through the water mixing valve. The temperature of the gas water heater is adjusted by adopting wireless remote control, and signals of a remote controller cannot be transmitted to the gas water heater on many occasions due to the limitation of the installation position. When a remote wire control mode is adopted, the special waterproof wired remote controller is high in cost, wires need to be buried in advance, the electronic wired remote controller works in a wet environment such as a bathroom for a long time, and the failure rate of the electronic wired remote controller is high.
disclosure of Invention
The invention aims to provide a solution for remotely controlling the hot water temperature of a constant-temperature gas water heater, namely the constant-temperature gas water heater capable of remotely controlling the temperature set value.
In order to achieve the above object, the present invention provides a constant temperature gas water heater for remotely controlling a temperature setting value, comprising:
The constant-temperature gas water heater comprises a controller, a heat exchanger, a first Hall water flow sensor, a second Hall water flow sensor, a first hot water outlet, a second hot water outlet, a cold water inlet, a cold water pipe, a main hot water pipe, a first hot water pipe and a second hot water pipe.
The cold water pipe is connected between the cold water inlet and the heat exchanger; one end of the first hot water pipe is connected to the first hot water outlet, and the other end of the first hot water pipe is communicated to the water outlet end of the main hot water pipe; one end of the second hot water pipe is connected to the second hot water outlet, and the other end of the second hot water pipe is communicated to the water outlet end of the main hot water pipe; the water inlet end of the main hot water pipe is connected to the heat exchanger.
The first Hall water flow sensor is arranged on the cold water pipe or the main hot water pipe of the main hot water pipe and used for detecting the inlet cold water flow of the cold water inlet; and the second Hall water flow sensor is arranged on the first hot water pipe and used for detecting the hot water flow at the outlet of the first hot water outlet.
The first Hall water flow sensor is provided with a first pulse signal output end, and the second Hall water flow sensor is provided with a second pulse signal output end; the controller is provided with a first pulse signal input end and a second pulse signal input end, and the first pulse signal input end and the second pulse signal input end are respectively connected to the first pulse signal output end and the second pulse signal output end.
And the constant-temperature gas water heater for remotely controlling the temperature set value controls the temperature set value of the constant-temperature gas water heater according to the ratio of the pulse frequency of the second pulse signal to the pulse frequency of the first pulse signal.
There are two methods for controlling the temperature set point:
The first method for controlling the temperature set value is to increase the temperature set value by increasing the relative outlet hot water flow of the first hot water outlet; specifically, when the ratio between the pulse frequency of the second pulse signal and the pulse frequency of the first pulse signal increases, the temperature set value increases; when the ratio between the pulse frequency of the second pulse signal and the pulse frequency of the first pulse signal decreases, the temperature set value decreases.
the second method for controlling the temperature set value is to increase the relative outlet hot water flow of the first hot water outlet and then decrease the temperature set value; specifically, when the ratio between the pulse frequency of the second pulse signal and the pulse frequency of the first pulse signal increases, the temperature set value decreases; when the ratio between the pulse frequency of the second pulse signal and the pulse frequency of the first pulse signal decreases, the temperature set value increases.
the temperature set value is controlled by the constant-temperature gas water heater, the first connecting water pipe, the second connecting water pipe and the water mixing valve together; 2 water inlets of the water mixing valve are respectively connected to a first hot water outlet and a second hot water outlet of the constant-temperature gas water heater through a first connecting water pipe and a second connecting water pipe; the hot water flow of the outlets of the first hot water outlet and the second hot water outlet is changed by adjusting the water mixing valve.
the temperature set value is controlled by a constant-temperature gas water heater, a first connecting water pipe, a second connecting water pipe, a first regulating valve and a second regulating valve; the water inlet ends of the first connecting water pipe and the second connecting water pipe are respectively connected to a first hot water outlet and a second hot water outlet of the constant-temperature gas water heater; the water outlet ends of the first connecting water pipe and the second connecting water pipe are communicated to form a water outlet end; the first regulating valve is arranged on the first connecting water pipe, and the second regulating valve is arranged on the second connecting water pipe; the hot water flow of the outlets of the first hot water outlet and the second hot water outlet is changed by adjusting the first adjusting valve and the second adjusting valve respectively.
The first method of controlling the temperature set point is according to the formula
T F F T KAnd calculating, wherein T is a temperature set value, F1 and F2 are pulse frequencies of the first pulse signal and the second pulse signal respectively, T1 is a lowest temperature set value, and K is a temperature adjusting range coefficient.
The second method of controlling the temperature set point is according to the formula
T F F T Kand calculating, wherein T is a temperature set value, F1 and F2 are pulse frequencies of the first pulse signal and the second pulse signal respectively, T2 is a maximum temperature set value, and K is a temperature adjusting range coefficient.
The step of the controller calculating the temperature set point is:
Step S1, initialization;
Step S2, sampling the inlet cold water flow of the cold water inlet and the outlet hot water flow of the first hot water outlet to obtain the pulse frequency of the first pulse signal and the second pulse signal;
Step S3, calculating the temperature set value of the constant temperature gas water heater;
step S4, other processing and waiting; when the next sampling timing arrives, the process proceeds to step S2.
the constant-temperature gas water heater further comprises a power supply module, a hot water temperature detection module, a gas flow control driving module, a fan control driving module and an ignition control and flame detection module.
The invention has the advantages that a wired or wireless remote controller is not needed, the method of controlling the flow of two paths of hot water by the water valve is adopted, the remote control of the hot water temperature set value of the constant-temperature gas water heater is realized, and the control result is stable and reliable.
Drawings
Fig. 1 is a structural block diagram of a constant temperature gas water heater in an embodiment 1 for remotely controlling a temperature set value.
Fig. 2 is a structural block diagram of a constant temperature gas water heater in an embodiment 2 of remotely controlling a temperature set value.
Fig. 3 is a schematic block diagram of a flow sensing circuit.
FIG. 4 is a flow chart for calculating a temperature set point.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
A structural block diagram of a constant-temperature gas water heater of an embodiment 1 for remotely controlling a temperature setting value is shown in fig. 1, wherein the constant-temperature gas water heater comprises a heat exchanger 101, a first hall water flow sensor 201, a second hall water flow sensor 202, a first hot water outlet 203, a second hot water outlet 204, a cold water inlet 205, a cold water pipe 401, a main hot water pipe 402, a first hot water pipe 403 and a second hot water pipe 404; and a water mixing valve 301, a first connecting water pipe 405, a second connecting water pipe 406, a mixed hot water pipe 407 and a water outlet nozzle 302 which realize remote control of a temperature set value together with the constant-temperature gas water heater.
The constant-temperature gas water heater is provided with 1 cold water inlet and 2 hot water outlets, and a cold water pipe 401 is connected between the cold water inlet 205 and the heat exchanger 101; one end of the first hot water pipe 403 is connected to the first hot water outlet 203, and the other end is connected to the water outlet end of the main hot water pipe 402; one end of the second hot water pipe 404 is connected to the second hot water outlet 204, and the other end is connected to the water outlet end of the main hot water pipe 402; the water inlet end of the main hot water pipe 402 is connected to the heat exchanger 101. The first hall water flow sensor 201 is installed on the cold water pipe 401 or on the main hot water pipe 402. The second hall water flow sensor 202 is mounted on the first hot water pipe 403.
2 water inlets of the water mixing valve 301 are respectively connected to a first hot water outlet 203 and a second hot water outlet 204 of the constant-temperature gas water heater through a first connecting water pipe 405 and a second connecting water pipe 406; the water outlet of the mixing valve 301 is connected to the water outlet nozzle 302 by a mixing hot water pipe 407.
Fig. 2 shows a block diagram of an embodiment 2 of the thermostatic gas water heater for remotely controlling a temperature setting value, which is different from the embodiment 1 in that a first adjusting valve 303 and a second adjusting valve 304 are used instead of a mixing valve 301, the first adjusting valve 303 is installed on a first connecting water pipe 405, and the second adjusting valve 304 is installed on a second connecting water pipe 406; the water outlet ends of the first connecting water pipe 405 and the second connecting water pipe 406 are connected with the mixed hot water pipe 407 by a tee joint.
The constant-temperature gas water heater also comprises a controller 210, a flow detection circuit of which is shown in a schematic block diagram in fig. 3, a first hall water flow sensor 201 is provided with a first pulse signal output end OUT1 for detecting the inlet cold water flow of a cold water inlet 205, and the signal type of the first pulse signal is pulse frequency. The second hall water flow sensor 202 is provided with a second pulse signal output end OUT2 for detecting the outlet hot water flow of the first hot water outlet 203, and the signal type of the second pulse signal is a pulse frequency. The first Hall water flow sensor 201 and the second Hall water flow sensor 202 adopt a single power supply for power supply; in fig. 3, a single power supply + VDD supplies power to the first hall water flow rate sensor 201 and the second hall water flow rate sensor 202.
The controller 210 has a first pulse signal input terminal IN1, a second pulse signal input terminal IN 2; the first pulse signal input terminal IN1 and the second pulse signal input terminal IN2 are connected to the first pulse signal output terminal OUT1 and the second pulse signal output terminal OUT2, respectively.
The working principle of the constant-temperature gas water heater for remotely controlling the temperature set value is as follows:
Adjusting the mixing valve 301, or adjusting the first adjusting valve 303 and the second adjusting valve 304 to change the outlet hot water flow of the first hot water outlet 203 and the inlet cold water flow of the cold water inlet 205, so as to change the pulse frequency of the first pulse signal and the second pulse signal; and controlling the temperature set value of the constant-temperature gas water heater according to the ratio of the pulse frequency of the second pulse signal to the pulse frequency of the first pulse signal. The inlet cold water flow of the cold water inlet 205 is equal to the sum of the outlet hot water flows of the first hot water outlet 203 and the second hot water outlet 204.
F F T F F T F F TSetting the pulse frequencies of the first pulse signal and the second pulse signal to be F1 and F2 respectively, setting the temperature setting value of the constant-temperature gas water heater to be T, and controlling the temperature setting value in two ways, wherein the first way is to increase the relative outlet hot water flow of the first hot water outlet 203, increase the temperature setting value, and specifically, when the ratio of F2 to F1 is increased, the temperature setting value T is increased; when the ratio of F2 relative to F1 decreases, the temperature set point T decreases. The controller 210 is in accordance with
T T KAnd calculating the temperature set value T of the constant-temperature gas water heater, wherein T1 is the lowest temperature set value, and K is the temperature regulating range coefficient.
F F T F F TThe second method is that the relative outlet hot water flow of the first hot water outlet 203 is increased, and the temperature set value is decreased, specifically, when the ratio of F2 to F1 is increased, the temperature set value T is decreased; as the ratio of F2 relative to F1 decreases, the temperature set point T increases. The controller 210 is in accordance with
T T Kand calculating the temperature set value T of the constant-temperature gas water heater, wherein T2 is the highest temperature set value, and K is the temperature regulating range coefficient.
T K T K Tthe water temperature control interval of a water heater is usually between 30 ℃ and 80 ℃. For example, T1 = 35 ℃, K = 40; or T2 = 75 ℃, K = 40 is chosen, the temperature set point T is controlled between 35 ℃ and 75 ℃.
the controller 210 is composed of a microcontroller and peripheral circuits. The microcontroller is preferably a single chip microcomputer or other devices such as ARM, DSP and the like are selected. The first pulse signal input terminal IN1 and the second pulse signal input terminal IN2 are counting input terminals of a counter inside the microcontroller.
The constant-temperature gas water heater further comprises a hot water temperature detection module, a gas flow control driving module, a fan control driving module, an ignition control and flame detection module and the like. Further, the constant temperature gas water heater also selectively comprises a part of or all of the modules in the cold water temperature detection module, the temperature value display module, the wind pressure detection module and the buzzer module.
The constant-temperature gas water heater also comprises a power supply module which is used for providing a single power supply + VDD and other power supplies and supplying power to the controller 210, the first flow sensor 201, the second flow sensor 202 and other modules.
The flow of the controller 210 calculating the temperature set point is shown in fig. 4, and includes the following steps:
step S1, initialization;
F FStep S2, sampling the inlet cold water flow of the cold water inlet 205 and the outlet hot water flow of the first hot water outlet 203, and acquiring the pulse frequencies F1 and F2 of the first pulse signal and the second pulse signal;
TStep S3, calculating the temperature set value T of the constant temperature gas water heater;
Step S4, other processing and waiting; when the next sampling timing arrives, the process proceeds to step S2.
T T Tthe controller 210 calculates the temperature setting value T of the constant temperature gas water heater, and performs other control of the constant temperature gas water heater. The other processing and waiting include water temperature sampling, water temperature control, gas flow control driving, fan control driving, ignition control, and the like, which need to be completed by the controller 210, and waiting. After the controller 210 calculates the temperature setting value T, it adopts a proper control algorithm to control the heating power of the gas water heater by controlling the gas flow, so as to control the temperature of the hot water of the gas water heater within the allowable error range near the temperature setting value T, thereby implementing the constant temperature function.
the control of the next sampling time is realized by software delay or timer timing by the controller 210.
The first hall water flow sensor 201 and the second hall water flow sensor 202 preferably select hall water flow sensors in the same range.
The above description is only an example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a constant temperature gas heater of remote control temperature setting value which characterized in that:
The constant-temperature gas water heater comprises a controller, a heat exchanger, a first Hall water flow sensor, a second Hall water flow sensor, a first hot water outlet, a second hot water outlet, a cold water inlet, a cold water pipe, a main hot water pipe, a first hot water pipe and a second hot water pipe;
The cold water pipe is connected between the cold water inlet and the heat exchanger; one end of the first hot water pipe is connected to the first hot water outlet, and the other end of the first hot water pipe is communicated to the water outlet end of the main hot water pipe; one end of the second hot water pipe is connected to the second hot water outlet, and the other end of the second hot water pipe is communicated to the water outlet end of the main hot water pipe; the water inlet end of the main hot water pipe is connected to the heat exchanger;
The first Hall water flow sensor is arranged on the cold water pipe and used for detecting the inlet cold water flow of the cold water inlet; the second Hall water flow sensor is arranged on the first hot water pipe and used for detecting the outlet hot water flow of the first hot water outlet;
The first Hall water flow sensor is provided with a first pulse signal output end, and the second Hall water flow sensor is provided with a second pulse signal output end; the controller is provided with a first pulse signal input end and a second pulse signal input end, and the first pulse signal input end and the second pulse signal input end are respectively connected to a first pulse signal output end and a second pulse signal output end;
The constant-temperature gas water heater for remotely controlling the temperature set value controls the temperature set value of the constant-temperature gas water heater according to the ratio of the pulse frequency of the second pulse signal to the pulse frequency of the first pulse signal;
There are two methods for controlling the temperature set point:
The first method for controlling the temperature set value is to increase the temperature set value by increasing the relative outlet hot water flow of the first hot water outlet; specifically, when the ratio between the pulse frequency of the second pulse signal and the pulse frequency of the first pulse signal increases, the temperature set value increases; when the ratio of the pulse frequency of the second pulse signal to the pulse frequency of the first pulse signal is reduced, the temperature set value is reduced;
The second method for controlling the temperature set value is to increase the relative outlet hot water flow of the first hot water outlet and then decrease the temperature set value; specifically, when the ratio between the pulse frequency of the second pulse signal and the pulse frequency of the first pulse signal increases, the temperature set value decreases; when the ratio between the pulse frequency of the second pulse signal and the pulse frequency of the first pulse signal decreases, the temperature set value increases.
2. A thermostatic gas water heater of claim 1 with remote control of temperature set point, characterized by: the temperature set value is controlled by the constant-temperature gas water heater, the first connecting water pipe, the second connecting water pipe and the water mixing valve together; 2 water inlets of the water mixing valve are respectively connected to a first hot water outlet and a second hot water outlet of the constant-temperature gas water heater through a first connecting water pipe and a second connecting water pipe; the hot water flow of the outlets of the first hot water outlet and the second hot water outlet is changed by adjusting the water mixing valve.
3. A thermostatic gas water heater of claim 1 with remote control of temperature set point, characterized by: the temperature set value is controlled by the constant-temperature gas water heater, the first connecting water pipe, the second connecting water pipe, the first regulating valve and the second regulating valve together; the water inlet ends of the first connecting water pipe and the second connecting water pipe are respectively connected to a first hot water outlet and a second hot water outlet of the constant-temperature gas water heater; the water outlet ends of the first connecting water pipe and the second connecting water pipe are communicated to form a water outlet end; the first regulating valve is arranged on the first connecting water pipe, and the second regulating valve is arranged on the second connecting water pipe; the hot water flow of the outlets of the first hot water outlet and the second hot water outlet is changed by adjusting the first adjusting valve and the second adjusting valve respectively.
4. A thermostatic gas water heater of claim 1 with remote control of temperature set point, characterized by: the first method of controlling the temperature set point is according to the formula
And calculating, wherein T is a temperature set value, F1 and F2 are pulse frequencies of the first pulse signal and the second pulse signal respectively, T1 is a lowest temperature set value, and K is a temperature adjusting range coefficient.
5. A thermostatic gas water heater of claim 1 with remote control of temperature set point, characterized by: the second method of controlling the temperature set point is according to the formula
And calculating, wherein T is a temperature set value, F1 and F2 are pulse frequencies of the first pulse signal and the second pulse signal respectively, T2 is a maximum temperature set value, and K is a temperature adjusting range coefficient.
6. A thermostatic gas water heater of claim 4 with remote control of temperature set point, characterized by: the minimum temperature set value T1 is 35 ℃, and the temperature regulating range coefficient K is 40.
7. a thermostatic gas water heater of claim 5 with remote control of temperature set point, wherein: the maximum temperature set value T2 is 75 ℃, and the temperature regulation range coefficient K is 40.
8. a thermostatic gas water heater of claim 1 with remote control of temperature set point, characterized by: the first Hall water flow sensor and the second Hall water flow sensor are Hall water flow sensors in the same measuring range.
9. a thermostatic gas water heater of claim 1 with remote control of temperature set point, characterized by: the step of the controller calculating the temperature set point is:
Step S1, initialization;
Step S2, sampling the inlet cold water flow of the cold water inlet and the outlet hot water flow of the first hot water outlet to obtain the pulse frequency of the first pulse signal and the second pulse signal;
Step S3, calculating the temperature set value of the constant temperature gas water heater;
step S4, other processing and waiting; when the next sampling timing arrives, the process proceeds to step S2.
10. a thermostatic gas water heater of claim 1 with remote control of temperature set point, characterized by: the constant-temperature gas water heater further comprises a power supply module, a hot water temperature detection module, a gas flow control driving module, a fan control driving module and an ignition control and flame detection module.
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| CN110207394B (en) * | 2018-11-26 | 2023-11-21 | 华帝股份有限公司 | Temperature control pipeline for gas water heater, gas water heater and control method |
| CN111174837A (en) * | 2020-02-26 | 2020-05-19 | 东莞立德电子有限公司 | Water level detection and temperature sensing module of instant heating water heater |
| CN111948941B (en) * | 2020-07-10 | 2022-09-30 | 深圳拓邦股份有限公司 | Method and system for acquiring control model of gas water heater and control computer |
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| CN201688004U (en) * | 2010-05-18 | 2010-12-29 | 无锡和晶科技股份有限公司 | Proportional valve control and feedback circuit of gas water heater |
| CN103344046A (en) * | 2013-06-28 | 2013-10-09 | 海尔集团公司 | Constant-temperature gas heater control method and constant-temperature gas heater |
| CN104236109A (en) * | 2013-06-24 | 2014-12-24 | 海尔集团公司 | Control method and control device of constant-temperature gas water heater |
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| WO2008070906A1 (en) * | 2006-12-12 | 2008-06-19 | Rheem Australia Pty Limited | A controllable water heater |
| CN201688004U (en) * | 2010-05-18 | 2010-12-29 | 无锡和晶科技股份有限公司 | Proportional valve control and feedback circuit of gas water heater |
| CN104236109A (en) * | 2013-06-24 | 2014-12-24 | 海尔集团公司 | Control method and control device of constant-temperature gas water heater |
| CN103344046A (en) * | 2013-06-28 | 2013-10-09 | 海尔集团公司 | Constant-temperature gas heater control method and constant-temperature gas heater |
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Inventor after: Wen Dingdu Inventor after: Ling Yun Inventor after: Yuan Chuanlai Inventor after: Guo Yanjie Inventor after: Chen Gang Inventor after: Wang Bing Inventor after: Tang Wenyan Inventor before: Ling Yun Inventor before: Yuan Chuanlai Inventor before: Guo Yanjie Inventor before: Chen Gang Inventor before: Wang Bing Inventor before: Wen Dingdu Inventor before: Tang Wenyan |
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Effective date of registration: 20201013 Address after: No.76 Minfeng South Road, Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: ZHANGJIAGANG DONGDA INDUSTRIAL TECHNOLOGY Research Institute Address before: 237000 Democratic constituency of Shiji street, Anfeng Town, Shouxian County, Huainan City, Anhui Province Patentee before: Wang Jingjing Effective date of registration: 20201013 Address after: 237000 Democratic constituency of Shiji street, Anfeng Town, Shouxian County, Huainan City, Anhui Province Patentee after: Wang Jingjing Address before: 412007 School of industry, research and production, Hunan University of Technology, 88 West Taishan Road, Zhuzhou, Hunan Patentee before: HUNAN University OF TECHNOLOGY |
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