CN217685850U - Gas water heater - Google Patents
Gas water heater Download PDFInfo
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- CN217685850U CN217685850U CN202123059714.4U CN202123059714U CN217685850U CN 217685850 U CN217685850 U CN 217685850U CN 202123059714 U CN202123059714 U CN 202123059714U CN 217685850 U CN217685850 U CN 217685850U
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Abstract
The utility model discloses a gas water heater, this gas water heater includes: the heat exchanger is connected with a water inlet pipe and a water outlet pipe; the heat exchanger temperature sensor is arranged on the heat exchanger and used for detecting the temperature of the heat exchanger; the combustor is used for supplying heat to the heat exchanger when in work; and the electric control assembly is electrically connected with the heat exchanger temperature sensor and the burner respectively, and is used for controlling the burner to work according to the temperature of the heat exchanger detected by the heat exchanger temperature sensor so that the heat exchanger receives the heat of the burner and carries out heat exchange with water flow accessed from the water inlet pipe. The utility model provides high gas heater's heating efficiency.
Description
Technical Field
The utility model relates to a gas heater technical field, in particular to gas heater.
Background
In a gas water heater, a temperature probe (detection of water temperature) is generally provided at a water outlet position of the gas water heater to reduce a difference between an actual water outlet temperature and a set temperature displayed on an operation screen by controlling a gas amount. The control mode has the following defects: when the water temperature of the heat exchanger is low, a long time is needed for the actual outlet water temperature to rise to reach the set temperature; if the water heater is restarted for operation immediately after being stopped, the residual hot water flows out firstly, and then the hot water with the outlet water temperature reaching the set temperature flows out, so that the outlet water temperature cannot reach the set temperature quickly.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a gas heater aims at promoting the heating efficiency of water heater.
In order to achieve the above object, the utility model provides a gas water heater, gas water heater includes:
the heat exchanger is connected with a water inlet pipe and a water outlet pipe;
the heat exchanger temperature sensor is arranged on the heat exchanger and used for detecting the temperature of the heat exchanger;
a burner for providing heat to the heat exchanger in operation;
and the electric control assembly is electrically connected with the heat exchanger temperature sensor and the burner respectively, and is used for controlling the burner to work according to the temperature of the heat exchanger detected by the heat exchanger temperature sensor so that the heat exchanger receives the heat of the burner and exchanges heat with water flow accessed from the water inlet pipe.
Optionally, the burner comprises:
a burner body;
the gas pipeline is communicated with the burner body;
the gas valve is arranged on the gas pipeline and is electrically connected with the electric control assembly;
the electronic control assembly is further used for adjusting the opening degree of the gas valve according to the temperature of the heat exchanger and the set temperature when the burner works initially so as to adjust the gas pressure output to the burner body.
Optionally, the gas water heater further comprises:
the water outlet temperature sensor is arranged on the water outlet pipe, electrically connected with the electric control assembly and used for detecting the water outlet temperature of the water outlet pipe;
the electric control assembly is further used for adjusting the opening degree of the gas valve according to the water outlet temperature and the set temperature when the water outlet temperature of the water outlet pipe reaches a first temperature threshold value, so that the gas pressure output to the combustor is adjusted.
Optionally, the burner further comprises:
and the air outlet of the fan is communicated with the heat exchanger, and the fan is used for adjusting the rotating speed and/or the working time of the fan according to the temperature of the heat exchanger after the combustor stops so as to adjust the air supply quantity of the fan to the heat exchanger and adjust and control the temperature of the heat exchanger.
Optionally, the gas water heater further comprises:
the water outlet temperature sensor is arranged on the water outlet pipe, is electrically connected with the electric control assembly and is used for detecting the temperature of the water outlet pipe;
and the electric control assembly is also used for adjusting the rotating speed of the fan according to the temperature of the heat exchanger and the set temperature when the temperature of the heat exchanger reaches a first temperature threshold value so as to adjust the air supply quantity of the fan for supplying air to the combustor.
Optionally, the burner further comprises:
the air outlet of the fan is sequentially communicated with the combustor, and the fan is used for supplying air to the combustor;
the electric control assembly is further used for adjusting the rotating speed of the fan according to the temperature of the heat exchanger and the set temperature so as to adjust the air quantity output to the combustor.
Optionally, the gas water heater further comprises:
the water outlet temperature sensor is arranged on the water outlet pipe, electrically connected with the electric control assembly and used for detecting the temperature of the water outlet pipe and outputting the temperature to the electric control assembly;
and the electric control assembly is also used for adjusting the working state of the gas water heater according to the temperature of the water outlet pipe and the temperature of the heat exchanger.
Optionally, the electronic control assembly is further configured to control the gas water heater to stop working when the temperature of the heat exchanger is detected to reach a preset safe temperature threshold.
Optionally, the gas water heater further comprises:
the heat exchanger, the combustor and the electronic control assembly are arranged in the shell;
the shell is also provided with a display panel which is electrically connected with the electric control component,
the electric control assembly is further used for controlling the display panel to work when the temperature of the heat exchanger is detected to be abnormal so as to display the corresponding fault identification.
Optionally, the burner further comprises:
an ignition device disposed in a combustion chamber formed by the burner;
a flame sensing device for detecting whether the preheating burner is in a burning state.
The utility model discloses set for temperature sensor in order to gather the heat exchanger temperature on the heat exchanger to gather the real-time temperature of heat exchanger through temperature sensor, in order to represent the temperature of interior surplus water of current heat exchanger through real-time temperature. The electric control assembly can control the work of the burner according to the real-time temperature acquired by the heat exchanger temperature sensor and the set temperature so as to generate corresponding heating heat. This example utilizes the temperature sensor who sets up on the heat exchanger to monitor the real-time temperature of the heat exchanger that holds maximum heat capacity in the water heater at gas heater during operation to according to the relation between real-time temperature and the settlement temperature, control combustor heating heat exchanger, thereby make the leaving water temperature can reach predetermineeing leaving water temperature with the speed that is very fast, in order to promote the heating efficiency of water heater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a gas water heater of the present invention;
fig. 2 is a schematic structural diagram of functional modules of an embodiment of the gas water heater of the present invention;
FIG. 3 is a graph of the temperature and rotation speed of the heat exchanger in the gas water heater of the present invention;
fig. 4 is a graph of the temperature-fan rotation speed curve of the heat exchanger in the gas water heater of the present invention.
The reference numbers indicate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 10 | |
32 | |
| 20 | Temperature sensor of |
33 | |
| 30 | Burner with a |
34 | |
| 40 | Electric control assembly | T1 | Inlet |
| 50 | Water outlet temperature sensor | A1 | Amount of waterSensor with a |
| 31 | Burner body |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The utility model provides a gas water heater.
In an embodiment of the present invention, the gas water heater includes:
the heat exchanger 10 is connected with a water inlet pipe 100a and a water outlet pipe 100b;
the heat exchanger temperature sensor 20 is installed on the heat exchanger 10, and the heat exchanger temperature sensor 20 is used for detecting the temperature of the heat exchanger 10;
a burner 30, said burner 30 being adapted to provide heat to said heat exchanger 10 when in operation;
the electronic control assembly 40 is electrically connected to the heat exchanger temperature sensor 20 and the burner 30, respectively, and the electronic control assembly 40 is configured to control the burner 30 to operate according to the temperature of the heat exchanger 10 detected by the heat exchanger temperature sensor 20, so that the heat exchanger 10 receives heat of the burner 30 and exchanges heat with water flowing from the water inlet pipe 100 a.
In this embodiment, the gas water heater is further provided with a housing for accommodating the heat exchanger 10, the burner 30, the fan 34, and the like, and the housing forms a cavity. The heat exchanger 10 is provided with a heat exchanging portion therein, the heat exchanging portion is provided with a heat exchanging medium channel therein, the heat exchanger 10 is connected with a water inlet pipe 100a and a water outlet pipe 100b, cold water enters the heat exchanger 10 through the water inlet pipe 100a, water flows in the heat exchanging medium channel, and is heated by the burner 30 to become hot water, and then is discharged from the water outlet pipe 100b for use by a user. The heat exchanger 10 can be made of stainless steel or metal, such as copper and iron, and has good heat exchange effect and high corrosion resistance. The heat exchanger 10 includes a housing and a heat exchange tube disposed around the housing. The heat exchanger 10 performs heat exchange treatment on water flow in the heat exchange pipe, so that the water flow is heated. The heat exchanger 10 may be located above the burner 30, or below the burner 30, for example, an inverted burner 30, where the positions of the burner 30 and the heat exchanger 10 are not limited herein, so as to ensure that more heat from the burner 30 is transferred to the heat exchanger 10. The burner 30 may be a catalytic burner 30 or a MILD burner 30. The gas water heater of the embodiment may be a forced-air type burner 30, and may also be a forced-air type burner 30. The electric control assembly 40 is used for controlling the burner 30 to burn when the gas water heater is started, and the gas and the air entering the first combustion chamber are ignited and ignited by the preheating burner 30, so that the mixed gas mixed with the gas and the air is combusted to heat the air in the first combustion chamber, and high-temperature flue gas is formed. It will be appreciated that by controlling the heating temperature, the air in the first combustion chamber can be heated to a target temperature, i.e. the above-mentioned predetermined temperature, and thus, the high temperature preheating of the air is achieved. And after the high-temperature gas subjected to high-temperature preheating is sent into the second combustion chamber, injecting fuel gas into the second combustion chamber, combining the fuel gas with the high-temperature gas, and igniting the fuel gas by the high-temperature gas to realize MILD combustion in the second combustion chamber. The first combustion chamber is a preheating combustion chamber, and the second combustion chamber is a high-temperature air combustion chamber.
In this embodiment, the electronic control assembly 40 includes an electronic control board, and a burner 30 assembly control circuit disposed on the electronic control board, the burner 30 assembly control circuit can be specifically realized by a main controller, a gas valve 33 driving circuit, a fan driving circuit, a gas valve 33 driving circuit, and the like, wherein the gas valve 33 driving circuit, the fan driving circuit, and the gas valve 33 driving circuit can be realized by driving circuits composed of power tubes such as a relay, an MOS tube, and an IGBT. The main controller can receive the control instruction input by the user through a wireless communication circuit, such as a Bluetooth module, an infrared induction circuit, a WIFI module and the like, and controls the combustor 30 assembly to work according to the corresponding control instruction, so that the water demand of the user is met. The electronic control assembly 40 may adopt an electronic control box, the electronic control assembly 40 is fixedly disposed on the side wall of the housing, and specifically, in order to avoid interference of the burner 30 and the heat exchanger 10 on the electronic control assembly 40 during the working process and facilitate adjustment by a user, the electronic control assembly 40 is fixedly disposed on the side wall of the housing, so that the user can operate and adjust the electronic control assembly 40 conveniently.
In this embodiment, a temperature sensor is set on the heat exchanger 10 to acquire the temperature of the heat exchanger 10, so that the real-time temperature of the heat exchanger 10 is acquired by the temperature sensor, and the temperature of the water remaining in the heat exchanger 10 is represented by the real-time temperature. The electronic control assembly 40 can control the operation of the burner 30 according to the real-time temperature collected by the heat exchanger temperature sensor 20 and the set temperature to generate the corresponding heating heat. In the working process of the gas water heater, the real-time temperature of the heat exchanger 10 with the maximum heat capacity in the water heater is monitored by utilizing the temperature sensor arranged on the heat exchanger 10, and the heat exchanger 10 is heated by controlling the burner 30 according to the relation between the real-time temperature and the set temperature, so that the outlet water temperature can reach the preset outlet water temperature at a higher speed, and the heating efficiency of the water heater is improved.
Compared with the hot water temperature which is only controlled by the temperature sensor arranged at the outlet, if the sensor is disconnected and a part of short circuit occurs, under the condition that the resistance and the temperature have deviation, the hot water in the scalding process flows out, so that the danger of burning is generated. The utility model discloses a measure the temperature that has the heat exchanger of thermal capacity most, control combustor 30 work, can improve the temperature stability when going out hot water again to even in summer or winter, through burning according to the temperature, can reach the settlement temperature fast.
It should be noted that the heat exchanger is very cold when the outside air is cold in winter and is very hot when the outside air is hot in summer, and if the same capability is adopted for ignition, when the temperature of the heat exchanger is higher, an over-temperature phenomenon occurs when the heat exchanger is heated; when the temperature of the heat exchanger is low, it takes a certain time for the hot water in the heat exchanger to reach the set temperature.
To this end, in an embodiment of the present invention, the burner includes:
a burner body 31;
a gas line 32 communicating with the burner body;
the gas valve 33 is arranged on the gas pipeline and is electrically connected with the electric control assembly;
the electronic control assembly 40 is further configured to adjust an opening degree of the gas valve 33 according to the temperature of the heat exchanger 30 and the set temperature when the burner 30 initially operates, so as to adjust the gas pressure output to the burner body 31.
In this embodiment, the gas valve 33 is used for adjusting the gas amount output to the burner body 31, and according to the real-time temperature of the heat exchanger 10 detected by the heat exchanger temperature sensor 20, the electronic control assembly 40 can compare the real-time temperature collected by the heat exchanger temperature sensor 20 with the set temperature, and determine the opening degree of the corresponding gas valve 33 according to the obtained comparison result, so as to determine the initial heat amount delivered to the heat exchanger 10 based on the opening degree of the gas valve 33, and thus the water heater can rapidly realize the set temperature water outlet. Therefore, the gas amount just ignited can be determined by the temperature of the heat exchanger 10, so that the combustor 30 can generate initial heating heat with the corresponding gas amount when working, which is beneficial to reducing the time when the actual outlet water temperature reaches the set temperature, and the effects of improving the operation efficiency of the water heater and improving the stability of the outlet water temperature are achieved. The lower the temperature of the heat exchanger 10, the greater the gas quantity demand, and thus the greater the opening degree of the gas valve 33, the higher the heat exchange efficiency can be improved, whereas the higher the temperature of the heat exchanger 10, the smaller the gas quantity demand, and thus the smaller the opening degree of the gas valve 33. Wherein, the gas valve 33 includes a gas controller 331 and a gas solenoid valve 332, and the gas controller 331 and the gas solenoid valve 332 are used for adjusting gas pressure entering into the burner body 31.
Specifically, when the temperature of the heat exchanger 10 is low, that is, the real-time temperature detected by the heat exchanger temperature sensor 20 is less than the set temperature, the set temperature is compared with the real-time temperature, and the temperature difference between the two is determined; determining initial heating heat according to the temperature difference and a preset water outlet time interval; determining the gas pressure in the burner 30 based on the initial heating heat; the opening degree of the gas valve 33 is determined based on the gas pressure. When the temperature of the heat exchanger 10 is low, that is, the real-time temperature detected by the heat exchanger temperature sensor 20 is greater than or equal to the set temperature, the opening degree of the gas valve 33 is decreased to decrease the temperature of the heat exchanger 10.
In the embodiment, the heat capacity constant of the heat exchanger 10 is determined by the difference between the temperature of the heat exchanger 10 detected by the heat exchanger temperature sensor 20 and the set temperature, the gas quantity is determined by the temperature of the heat exchanger 10 during ignition, so that the temperature of the effluent water is more stable, and meanwhile, the gas pressure (gas and/or air) after ignition can be adjusted by the detected real-time temperature of the heat exchanger 10 until the temperature of the heat exchanger 10 reaches a first temperature threshold value, and then the initial gas pressurization is controlled to stop. Therefore, the temperature of the heat exchanger 10 can be directly measured and controlled, and the purpose of setting the temperature can be quickly achieved by the temperature of hot water in the process of water re-discharging no matter in summer or winter. Wherein, the gas pressure can be calculated by adopting the following formula:
gas pressure = typically control gas pressure f (target temperature-heat exchanger temperature);
heat capacity constant of heat exchanger: f (target temperature-heat exchanger temperature).
In one embodiment, the gas water heater further comprises:
the water outlet temperature sensor 50 is installed on the water outlet pipe 100b, the water outlet temperature sensor 50 is electrically connected with the electric control component 40, and the water outlet temperature sensor 50 is used for detecting the water outlet temperature of the water outlet pipe 100b;
the electronic control assembly 40 is further configured to adjust the opening of the gas valve 33 according to the outlet water temperature and the set temperature when the outlet water temperature of the outlet pipe 100b reaches a first temperature threshold value, so as to adjust the gas pressure output to the burner 30.
In this embodiment, the first temperature threshold may be set to be smaller than the set temperature, and specifically, the first temperature threshold may be calculated by using the following formula:
first temperature threshold = set temperature- α representation, where α may be adjusted as required. When the outlet water temperature of the outlet pipe 100b is in the following range, the opening degree of the gas valve 33 can be adjusted according to the outlet water temperature and the set temperature:
set temperature-alpha < water outlet temperature < set temperature. In operation, the electronic control component 40 adjusts the gas valve 33 (gas solenoid valve and/or proportional valve) to provide gas according to the detected outlet water temperature, and the heat exchanger 10 can be enabled to heat water in combination with the fan 34 to provide proper air volume. The electronic control unit 40 can adjust the gas solenoid valve and the proportional valve to make the outlet water temperature detected by the outlet water temperature sensor 50 reach the set temperature set by the user. In this embodiment, after the temperature of the heat exchanger with the maximum heat capacity is monitored by the heat exchanger temperature sensor 20 and the heat exchanger is heated by an appropriate amount of fuel gas to reach a first temperature threshold (set temperature- α), the outlet water temperature sensor 50, such as a thermistor, is installed at the outlet of the outlet pipe 100b to control the outlet water temperature, so that the hot water temperature can reach the set temperature at a fast speed.
In a water heater having a water inlet temperature sensor T1 and a water outlet temperature sensor 50, if a water tap is turned on immediately after water outlet is stopped, hot water is immediately supplied. This is because the temperature of the hot water is increased after the heat of the heat-generating heat exchanger is transferred to the water after the water discharge is stopped. If water is discharged at this time, the problem of overheating of the water supply from which hot water is discharged again occurs. For example, the copper heat exchanger 10 has a certain weight, is directly exposed to gas, and during the process of burning water, heat is stably transferred to water, and when the water heater stops operating, because a certain residual heat still exists when the gas stops burning, the water in the heat exchanger 10 is continuously heated, and the heat in the heat exchanger 10 is transferred to the water to the inside, so that the water temperature of the heat exchanger 10 and/or the heat exchanger 10 is higher than the set temperature, and when the water heater is restarted immediately after shutdown, if a certain improvement measure is not provided, the water flow with higher temperature can continuously flow out for a period of time, and the water outlet temperature can be changed to the set temperature.
In order to achieve temperature stability when re-boiling hot water, in one embodiment, the burner further comprises:
and an air outlet of the fan 34 is communicated with the heat exchanger 10, and the fan 34 is configured to adjust a rotation speed and/or a working time of the fan 34 according to the temperature of the heat exchanger 10 after the burner 30 is stopped, so as to adjust an air supply amount of the fan 34 to the heat exchanger 10, and to adjust and control the temperature of the heat exchanger 10.
In the present embodiment, the operation time of the blower 34 can be controlled by changing the rotation speed of the blower 34 and monitoring the temperature of the heat exchanger 10 after the combustion is stopped according to the temperature of the heat exchanger 10 after the combustion is stopped after the combustion of the burner 30 is stopped, and the temperature of the outlet water can be maintained in a stable state even in summer or winter by cooling to an appropriate temperature in a short time. The temperature of the heat exchanger 10 is appropriately cooled by the blower 34 when the faucet is turned off, so that the temperature is more stable when the water is turned back on. In the embodiment, the temperature sensor is arranged on the heat exchanger 10, the temperature of the heat exchanger 10 is detected after combustion is stopped, and when the temperature of the heat exchanger 10 is higher than the set temperature, the temperature is cooled to the set temperature by the fan 34, so that the temperature of the heat exchanger 10 can reach the set temperature in a short time no matter in summer or winter, no matter how the set temperature is, and the stability of the temperature of start-stop hot water is realized. In some embodiments, the time for the water flow with higher temperature to flow out can be shortened by controlling the burner 30 to strike fire in a delayed manner or reducing the gas pressure of the ignited gas, so that the risk that the user is scalded due to the fact that the temperature of the water with higher temperature rises again after the water with higher temperature is heated can be reduced, and the water demand of the user can be met as soon as possible.
In one embodiment, the gas water heater further comprises:
the outlet water temperature sensor 50 is installed on the outlet pipe 100b, the outlet water temperature sensor 50 is electrically connected with the electric control component 40, and the outlet water temperature sensor 50 is used for detecting the temperature of the outlet pipe 100b;
the electronic control assembly 40 is further configured to adjust the rotation speed of the fan 34 according to the temperature of the heat exchanger 10 and the set temperature when the temperature of the heat exchanger 10 reaches the first temperature threshold value, so as to adjust the amount of air supplied to the burner 30 by the fan 34.
In this embodiment, the first temperature threshold = set temperature- α indicates, where α may be adjusted according to a requirement. When the outlet water temperature of the outlet pipe 100b is in the following range, the opening degree of the gas valve 33 can be adjusted according to the outlet water temperature and the set temperature:
set temperature-alpha < water outlet temperature < set temperature. During operation, the electronic control assembly 40 adjusts the rotation speed of the fan 34 to provide a proper amount of air according to the detected outlet water temperature, so that the heat exchanger 10 can heat water, and the outlet water temperature detected by the outlet water temperature sensor 50 reaches the set temperature set by the user. In this embodiment, after the temperature of the heat exchanger with the maximum heat capacity is monitored by the heat exchanger temperature sensor 20 and the heat exchanger is heated by a proper amount of air to reach the first temperature threshold (the set temperature- α), the outlet water temperature sensor 50, such as a thermistor, is installed at the outlet of the outlet pipe 100b to control the outlet water temperature, so that the hot water temperature can reach the set temperature at a higher speed.
In one embodiment, the gas water heater further comprises:
the air outlet of the fan 34 is communicated with the combustor 30, and the fan 34 is used for supplying air to the combustor 30;
the electronic control assembly 40 is further configured to adjust the rotation speed of the fan 34 according to the temperature of the heat exchanger 10 and the set temperature, so as to adjust the amount of air output to the burner 30.
In this embodiment, the fan 34 is used to adjust the amount of air output to the burner 30, and according to the real-time temperature of the heat exchanger 10 detected by the heat exchanger temperature sensor 20, the electronic control component 40 may compare the real-time temperature collected by the heat exchanger temperature sensor 20 with the set temperature, and determine the corresponding rotation speed of the fan 34 according to the obtained comparison result, so as to determine the initial heat quantity delivered to the heat exchanger 10 based on the rotation speed of the fan 34, so as to enable the water heater to quickly achieve the set temperature of outlet water. Therefore, the gas quantity just ignited can be determined by the temperature of the heat exchanger 10, so that the combustor 30 can generate initial heating heat according to the corresponding gas quantity when working, the time for the actual outlet water temperature to reach the set temperature is favorably reduced, and the effects of improving the operating efficiency of the water heater and improving the stability of the outlet water temperature are achieved. The lower the temperature of the heat exchanger 10 is, the greater the fuel gas amount demand is, and thus the greater the rotation speed of the fan 34 is, the higher the heat exchange efficiency can be improved, whereas the higher the temperature of the heat exchanger 10 is, the smaller the fuel gas amount demand is, and thus the rotation speed of the fan 34 is.
Specifically, when the temperature of the heat exchanger 10 is low, that is, the real-time temperature detected by the heat exchanger temperature sensor 20 is less than the set temperature, the set temperature is compared with the real-time temperature, and the temperature difference between the two is determined; determining initial heating heat according to the temperature difference and a preset water outlet time interval; determining the gas pressure in the burner 30 based on the initial heating heat; the speed of the fan 34 is determined based on the gas pressure. When the temperature of the heat exchanger 10 is low, that is, the real-time temperature detected by the heat exchanger temperature sensor 20 is greater than or equal to the set temperature, the rotation speed of the fan 34 is reduced to reduce the temperature of the heat exchanger 10.
In the embodiment, the heat capacity constant of the heat exchanger 10 is determined by the difference between the temperature of the heat exchanger 10 detected by the heat exchanger temperature sensor 20 and the set temperature, the gas quantity is determined by the temperature of the heat exchanger 10 during ignition, so that the temperature of the effluent water is more stable, and meanwhile, the gas pressure (gas and/or air) after ignition can be adjusted by the detected real-time temperature of the heat exchanger 10 until the temperature of the heat exchanger 10 reaches a first temperature threshold value, and then the initial gas pressurization is controlled to stop. Therefore, the temperature of the heat exchanger 10 can be directly measured and controlled, and the hot water temperature can quickly reach the set temperature in the process of water re-discharging no matter in summer or winter. In the embodiment, the temperature sensor 20 of the heat exchanger is used for detecting the temperature of the heat exchanger 10, and the burner 30 is provided with proper gas quantity and/or air quantity, so that the heat exchanger 10 can be heated when the burner 30 works, and the temperature of hot water can reach the set temperature at a higher speed all the year round.
The hot water temperature is only controlled by the temperature sensor arranged at the outlet, if the sensor is disconnected and a part of short circuit occurs, under the condition that the resistance and the temperature have deviation, the hot water in the rolling and scalding flow out, so that the danger of burning is generated.
In order to solve the above problem, in an embodiment of the present invention, the gas water heater further includes:
the outlet water temperature sensor 50 is installed on the outlet pipe 100b, the outlet water temperature sensor 50 is electrically connected with the electric control component 40, and the outlet water temperature sensor 50 is used for detecting the temperature of the outlet pipe 100b and outputting the temperature to the electric control component 40;
the electric control assembly 40 is further configured to adjust the operating state of the gas water heater according to the temperature of the water outlet pipe 100b and the temperature of the heat exchanger 10.
In this embodiment, the temperature of the heat exchanger 10 is determined by detecting the temperature of water by the outlet water temperature sensor 50 and by adding a temperature sensor to the heat exchanger, and the gas water heater is monitored by a plurality of temperature sensors. In the running process of the water heater, if the gas water heater is heated abnormally, the temperature sensor arranged on the heat exchanger 10 and the outlet water temperature sensor 50 can detect the temperature abnormity, and the running of the water heater is stopped before the water heater discharges a large amount of high-temperature water by monitoring through a plurality of temperature sensors, so that the outlet water temperature can be prevented from being overhigh. Meanwhile, the sensor fault can be detected by comparing the two temperature sensors, so that the safety is greatly improved. The two temperature sensors at the exchanger and the hot water outlet will be compared from time to time and will be protected from safety during the combustion process if the temperature difference between the two temperature sensors is greater than or equal to a certain value.
In an embodiment, the electronic control assembly 40 is further configured to control the gas water heater to stop operating when the temperature of the heat exchanger 10 is detected to reach a preset safe temperature threshold.
In this embodiment, in order to avoid taking place under the condition of unusual heating, only lean on the temperature sensor that the water heater delivery port set up to detect the temperature, when this temperature sensor detects the temperature anomaly, the temperature in heat exchanger 10 has been very high to lead to unable high temperature to go out water, set up temperature sensor on the exchanger through the sampling and carry out temperature acquisition and detection, can stop the operation of water heater when the water temperature of heat exchanger 10 becomes high, in order to promote the security of water heater operation, reduce the scald preventing risk. When abnormal heating occurs, the heat exchanger 10 becomes a higher temperature when the outlet water temperature sensor 50 provided at the water outlet detects a temperature abnormality, and discharge of hot water at a high temperature cannot be avoided. This time, by attaching the temperature sensor to the heat exchanger 10, the operation of the appliance can be stopped as soon as possible when the heat exchanger 10 becomes a high temperature, and higher safety can be achieved.
In one embodiment, the gas water heater includes:
a housing in which the heat exchanger 10, the burner 30 and the electronic control assembly 40 are disposed;
a display panel is also arranged on the shell and is electrically connected with the electric control component 40,
the electronic control assembly 40 is further configured to control the display panel to work when the temperature of the heat exchanger 10 is detected to be abnormal, so as to display a corresponding fault identifier.
In this embodiment, the display panel may display the operation status of the gas water heater, for example, when the temperature of the heat exchanger 10 is detected to be abnormal, the display panel may display a corresponding fault indicator on the display panel of the water heater while controlling to close the gas valve 33 to stop the operation of the burner 30. The fault identification is displayed to remind a user that the current water temperature is overheated, so that the user can be prompted to position the fault in time. In some embodiments, the display panel may also be configured as a touch screen, the water heater may be activated by clicking the touch screen, the heating mode may be set, the temperature may be set, and so on.
In one embodiment, the combustor 30 further comprises:
an ignition device disposed in a combustion chamber formed by the burner 30;
a flame induction means for detecting whether the preheating burner 30 is in a burning state.
In this embodiment, the flame detection means may determine the flame temperature or the flame current. When the water heater detects the flame temperature, the flame detection device is a temperature sensor, and in the working state of the water heater, the temperature sensor is in contact with the flame in the water heater and measures the temperature corresponding to the flame; when the water heater detects the flame current, the flame detection device is a flame feedback needle, and when the water heater works, because the flame has ions and has the unidirectional conductive characteristic when the gas is combusted; a heat-resistant flame feedback needle is inserted into a flame, and when an AC voltage is applied between the flame feedback needle and a burner 30 having a larger surface area than the flame feedback needle, ions are generated in the flame, and then the flame feedback needle performs a rectifying action on the flow of the ions into the burner 30, and the flame feedback needle detects a weak DC current flowing through a flame circuit, thereby detecting the presence or absence and size of the flame. During the normal operation of the burner 30, the rotation speed of the fan 34 and/or the opening of the gas valve 33 can be controlled by detecting the presence or absence and the size of the flame, so as to provide appropriate gas and/or air, thereby avoiding the problem that the water heater burns insufficiently and generates carbon monoxide.
In some embodiments, the gas water heater further includes an inlet water temperature sensor T1 and a water amount sensor A1 disposed on the inlet pipe 100a, wherein the electronic control assembly 40 obtains a water energy value according to the inlet water temperature sensor T1, the outlet water temperature sensor 50 and the water amount sensor A1.
The inlet water temperature sensor T1 and the water quantity sensor A1 are arranged on one side, far away from the heat exchanger 10, of the water inlet pipe 100a in series; the water outlet temperature sensor 50 is arranged on one side of the water outlet pipe 100b away from the heat exchanger 10; the inlet water temperature sensor T1, the outlet water temperature sensor 50 and the water quantity sensor A1 are all electrically connected with the electric control component 40; through intake temperature sensor T1, go out water temperature sensor 50 and water yield sensor A1 detects gas heater's the ability of going out water. The water inlet amount, the water outlet amount and the water outlet temperature are all changed within a certain range, so that the normal work of the water heater is ensured. The gas water heater can also be provided with a water flow controller S1 for controlling the water flow. The water flow controller S1 sends a signal to the inlet pipe 100 a.
The above mentioned is only the optional embodiment of the present invention, and not to limit the patent scope of the present invention, all the equivalent structure changes made by the content of the present specification and the attached drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A gas water heater, comprising:
the heat exchanger is connected with a water inlet pipe and a water outlet pipe;
the heat exchanger temperature sensor is arranged on the heat exchanger and used for detecting the temperature of the heat exchanger;
a burner for providing heat to the heat exchanger in operation;
and the electric control assembly is respectively electrically connected with the heat exchanger temperature sensor and the combustor and is used for controlling the combustor to work according to the temperature of the heat exchanger detected by the heat exchanger temperature sensor so that the heat exchanger receives the heat of the combustor and exchanges heat with water flow accessed from the water inlet pipe.
2. The gas water heater of claim 1, wherein the burner comprises:
a burner body;
the gas pipeline is communicated with the burner body;
the gas valve is arranged on the gas pipeline and is electrically connected with the electric control assembly;
the electronic control assembly is further used for adjusting the opening degree of the gas valve according to the temperature of the heat exchanger and the set temperature when the burner works initially so as to adjust the gas pressure output to the burner body.
3. The gas water heater of claim 2, further comprising:
the water outlet temperature sensor is arranged on the water outlet pipe, electrically connected with the electric control assembly and used for detecting the water outlet temperature of the water outlet pipe;
the electric control assembly is further used for adjusting the opening of the gas valve according to the water outlet temperature and the set temperature when the water outlet temperature of the water outlet pipe reaches a first temperature threshold value, so that the gas pressure output to the combustor is adjusted.
4. The gas water heater of claim 1, wherein said burner further comprises:
and the air outlet of the fan is communicated with the heat exchanger, and the fan is used for adjusting the rotating speed and/or the working time of the fan according to the temperature of the heat exchanger after the combustor stops so as to adjust the air supply quantity of the fan to the heat exchanger and adjust and control the temperature of the heat exchanger.
5. The gas water heater of claim 4, further comprising:
the water outlet temperature sensor is arranged on the water outlet pipe, electrically connected with the electric control assembly and used for detecting the temperature of the water outlet pipe;
and the electric control assembly is also used for adjusting the rotating speed of the fan according to the temperature of the heat exchanger and the set temperature when the temperature of the heat exchanger reaches a first temperature threshold value so as to adjust the air supply quantity of the fan to the combustor.
6. The gas water heater of claim 1, wherein said burner further comprises:
the air outlet of the fan is sequentially communicated with the combustor, and the fan is used for supplying air to the combustor;
the electric control assembly is further used for adjusting the rotating speed of the fan according to the temperature of the heat exchanger and the set temperature so as to adjust the air quantity output to the combustor.
7. The gas water heater of claim 1, further comprising:
the water outlet temperature sensor is arranged on the water outlet pipe, electrically connected with the electric control assembly and used for detecting the temperature of the water outlet pipe and outputting the temperature to the electric control assembly;
and the electric control assembly is also used for adjusting the working state of the gas water heater according to the temperature of the water outlet pipe and the temperature of the heat exchanger.
8. The gas water heater as claimed in claim 1, wherein the electric control assembly is further configured to control the gas water heater to stop when the temperature of the heat exchanger is detected to reach a preset safety temperature threshold.
9. The gas water heater of claim 8, further comprising:
the heat exchanger, the combustor and the electronic control assembly are arranged in the shell;
the shell is also provided with a display panel which is electrically connected with the electric control component,
the electric control assembly is further used for controlling the display panel to work when the temperature of the heat exchanger is detected to be abnormal so as to display the corresponding fault identification.
10. The gas water heater of any one of claims 1 to 9, wherein the burner further comprises:
an ignition device disposed in a combustion chamber formed by the burner;
the flame sensing device is used for detecting whether the burner is in a combustion state or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123059714.4U CN217685850U (en) | 2021-12-07 | 2021-12-07 | Gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123059714.4U CN217685850U (en) | 2021-12-07 | 2021-12-07 | Gas water heater |
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| Publication Number | Publication Date |
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| CN217685850U true CN217685850U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123059714.4U Active CN217685850U (en) | 2021-12-07 | 2021-12-07 | Gas water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116358170A (en) * | 2023-06-01 | 2023-06-30 | 南京普兰特换热设备有限公司 | Automatic regulation and control gas hot-blast stove and gas hot-blast stove regulation and control method |
-
2021
- 2021-12-07 CN CN202123059714.4U patent/CN217685850U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116358170A (en) * | 2023-06-01 | 2023-06-30 | 南京普兰特换热设备有限公司 | Automatic regulation and control gas hot-blast stove and gas hot-blast stove regulation and control method |
| CN116358170B (en) * | 2023-06-01 | 2023-08-04 | 南京普兰特换热设备有限公司 | Automatic regulation and control gas hot-blast stove and gas hot-blast stove regulation and control method |
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