CN111664573A - Anti-freezing control method and device for gas water heater - Google Patents
Anti-freezing control method and device for gas water heater Download PDFInfo
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- CN111664573A CN111664573A CN202010650075.XA CN202010650075A CN111664573A CN 111664573 A CN111664573 A CN 111664573A CN 202010650075 A CN202010650075 A CN 202010650075A CN 111664573 A CN111664573 A CN 111664573A
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
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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
Abstract
The invention provides an anti-freezing control method and device for a gas water heater, wherein the gas water heater comprises the following components: the anti-freezing control method of the gas water heater comprises the following steps: when the gas water heater is in a standby mode, monitoring the water inlet temperature and the water outlet temperature of the constant temperature tank; judging whether the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value or not; when the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value, controlling a water pump of the gas water heater to operate according to a preset rotating speed; judging whether the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, wherein the second preset temperature threshold value is lower than the first preset temperature threshold value; and when the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, controlling the gas water heater to enter an anti-freezing mode. By implementing the invention, the accuracy of the anti-freezing control of the whole gas water heater is improved, the service life of the gas water heater is prolonged, and the invention is more energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to an anti-freezing control method and device for a gas water heater.
Background
The gas water heater is a water heater which adopts gas as a main energy material and achieves the purpose of preparing hot water by transferring high-temperature heat generated by gas combustion to cold water flowing through a heat exchanger. The gas-type water heater has the advantages of being ready to use when being opened, free of waiting and small in occupied area. In the aspect of safety, the gas water heater realizes the separation of heat production and heat supply, bathes in a bathroom and is installed in a kitchen, and the danger of electric leakage generated in the bathing process is avoided. However, hot water generated by the gas water heater can be cooled and heated, and the use experience of a user is influenced.
In order to solve the problem that the water outlet of the gas water heater is suddenly cooled and suddenly heated, the constant-temperature gas water heater is produced by transportation, the constant-temperature tank for storing water is arranged in the water heater to neutralize high-temperature hot water with high ignition power, the fluctuation of the water temperature of a water consumption point is reduced greatly, and the phenomenon that the water outlet temperature is uneven in cold and heat due to combustion influence is avoided. When the gas water heater is in a low-temperature environment, the gas water heater is easy to be damaged by freezing, so that the gas water heater mostly has an anti-freezing function, and can be automatically started to heat in an anti-freezing mode, so that the gas water heater is prevented from being damaged by freezing. For a constant-temperature gas water heater, the gas water heater is controlled to enter an anti-freezing mode by detecting the water inlet temperature of a constant-temperature tank, but the water temperature inside the constant-temperature tank is slow, the water outlet temperature is possibly still high, if the water inlet temperature threshold value is set to be low, the gas water heater is easy to freeze and damage, the service life of the gas water heater is influenced, and if the water inlet temperature threshold value is set to be high, the gas water heater can enter the anti-freezing mode in advance, the energy is wasted, and the anti-freezing control accuracy of the whole gas water heater is influenced.
Disclosure of Invention
In view of this, embodiments of the present invention provide an anti-freezing control method and apparatus for a gas water heater to overcome the problem in the prior art that the anti-freezing control accuracy of a gas water heater with a constant temperature function is low.
According to a first aspect, an embodiment of the present invention provides an anti-freezing control method for a gas water heater, the gas water heater including: the anti-freezing control method of the gas water heater comprises the following steps: when the gas water heater is in a standby mode, monitoring the water inlet temperature and the water outlet temperature of the constant temperature tank; judging whether the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value or not; when the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value, controlling a water pump of the gas water heater to operate according to a preset rotating speed; judging whether the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, wherein the second preset temperature threshold value is lower than the first preset temperature threshold value; and when the water inlet temperature or the water outlet temperature is less than or equal to the second preset temperature threshold value, controlling the gas water heater to enter an anti-freezing mode.
Optionally, the anti-freezing control method of the gas water heater further includes: judging whether the inlet water temperature is greater than a third preset temperature threshold value, wherein the third preset temperature threshold value is greater than the first preset temperature threshold value; and when the water inlet temperature is higher than the third preset temperature threshold value, controlling the gas water heater to exit the anti-freezing mode, entering the standby mode, and returning to the step of monitoring the water inlet temperature and the water outlet temperature of the gas water heater when the gas water heater is in the standby mode.
Optionally, the anti-freezing control method of the gas water heater further includes: when the water inlet temperature and the water outlet temperature are both greater than the second preset temperature threshold value, judging whether the water inlet temperature or the water outlet temperature reaches a fourth preset temperature threshold value, wherein the fourth preset temperature threshold value is greater than the first preset temperature threshold value; and when the water inlet temperature or the water outlet temperature reaches the fourth preset temperature threshold value, controlling the water pump to stop running, and returning to the step of judging whether the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value.
Optionally, after the controlling the water pump of the gas water heater to operate at a preset rotation speed, before the determining whether the inlet water temperature or the outlet water temperature is less than or equal to a second preset temperature threshold, the anti-freezing control method of the gas water heater further includes: monitoring whether the water flow in a water inlet pipeline of the gas water heater in a preset time meets a preset requirement or not; and when the water flow meets a preset requirement within the preset time, executing the step of judging whether the inlet water temperature or the outlet water temperature is less than or equal to a second preset temperature threshold value.
Optionally, the anti-freezing control method of the gas water heater further includes: and when the water flow does not meet the preset requirement within the preset time, controlling the water pump to stop running and entering a blockage protection mode.
Optionally, after monitoring the water inlet temperature and the water outlet temperature of the constant temperature tank, before determining whether the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold, the anti-freezing control method of the gas water heater further includes: judging whether the water inlet temperature or the water outlet temperature is smaller than a second preset temperature threshold value or not; and when the water inlet temperature or the water outlet temperature is not less than the second preset temperature threshold, executing the step of judging whether the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold.
Optionally, the anti-freezing control method of the gas water heater further includes: and when the water inlet temperature or the water outlet temperature is smaller than the second preset temperature threshold value, executing the step of controlling the gas water heater to enter an anti-freezing mode.
According to a second aspect, embodiments of the present invention also provide an anti-freezing control device for a gas water heater, the gas water heater including: constant temperature jar, gas heater's freeze-proof controlling means includes: the acquisition module is used for monitoring the water inlet temperature and the water outlet temperature of the constant temperature tank when the gas water heater is in a standby mode; the first judgment module is used for judging whether the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value or not; the first control module is used for controlling the water pump of the gas water heater to operate according to a preset rotating speed when the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value; the second judgment module is used for judging whether the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, and the second preset temperature threshold value is lower than the first preset temperature threshold value; and the second control module is used for controlling the gas water heater to enter an anti-freezing mode when the water inlet temperature or the water outlet temperature is less than or equal to the second preset temperature threshold value. According to a third aspect, embodiments of the present invention also provide a disinfection apparatus, comprising: the temperature acquisition unit is used for acquiring the ambient temperature; a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, and the processor executing the computer instructions to perform the disinfection apparatus control method of the first aspect or any one of its alternative embodiments.
According to a third aspect, an embodiment of the present invention further provides a gas water heater, including: a constant temperature tank; the temperature acquisition unit is arranged on the constant temperature tank and is used for acquiring the water inlet temperature and the water outlet temperature of the constant temperature tank; a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing therein computer instructions, and the processor executing the computer instructions to perform the anti-freeze control method for a gas water heater according to the first aspect, or any one of the optional embodiments thereof.
According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the anti-freeze control method for a gas water heater of the first aspect, or any one of its alternative embodiments.
The technical scheme of the invention has the following advantages:
the embodiment of the invention provides an anti-freezing control method and device for a gas water heater, wherein the gas water heater comprises a constant temperature tank, and the control method comprises the following steps: when the gas water heater is in the standby mode, the water inlet temperature and the water outlet temperature of the constant temperature tank are obtained, under the condition that the water inlet temperature or the water outlet temperature is smaller than or equal to a first preset temperature threshold value, the water pump of the gas water heater is controlled to operate according to a preset rotating speed, so that water in the constant temperature tank circulates in a pipeline of the gas water heater until the water inlet temperature or the water outlet temperature is smaller than or equal to a second preset temperature threshold value, and the second preset temperature threshold value is lower than the first preset temperature threshold value, and the gas water heater is controlled to enter the anti-freezing mode. The second preset temperature threshold is the anti-freezing set temperature of the gas water heater, the first preset temperature threshold is a temperature value slightly higher than the anti-freezing set temperature, so that the characteristic that the water temperature in the constant temperature tank changes slowly is utilized, when the water inlet temperature or the water outlet temperature of the constant temperature tank is monitored to be close to the anti-freezing set temperature, the water pump is controlled to work to circulate the water in the constant temperature tank, the anti-freezing control method has the advantages that the water inlet temperature or the water outlet temperature is increased, the anti-freezing mode is not started until the water inlet temperature or the water outlet temperature of the constant-temperature tank reaches the anti-freezing set temperature, and compared with a traditional anti-freezing control method for directly detecting that the water inlet temperature reaches the anti-freezing set temperature and entering the anti-freezing mode, gas resources are saved, the phenomenon that the gas water heater is easily damaged by freezing due to the fact that the water inlet temperature threshold value is set to be low is avoided, the service life of the gas water heater is prolonged, and the accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a gas water heater with a constant temperature function according to an embodiment of the invention;
FIG. 2 is a flow chart of an anti-freeze control method for a gas water heater according to an embodiment of the present invention;
FIG. 3 is an exemplary diagram of an antifreeze control process for a gas water heater according to an embodiment of the present invention;
FIG. 4 is a schematic view of an anti-freeze control device of a gas water heater according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a gas water heater according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Fig. 1 shows a schematic structural diagram of a gas water heater with a thermostatic function, as shown in fig. 1, which consists of a heat exchanger 1 for exchanging heat between high-temperature flue gas and cold water; a burner 2 for generating high-temperature flue gas; a constant temperature tank 3 with constant pressure, air exhaust and water storage; a gas valve 4; a heating pipe 5; a water pump 6 for providing power for the system on the heating pipeline 5; a sectional valve 8 for realizing sectional combustion of fuel gas; an ignition needle 9; a fire detection needle 10; a fan 11 and the like. Wherein, one end of the heating pipeline 5 is connected with the water inlet pipe of the constant temperature tank 3; and the other end of the water outlet pipe is connected with the water outlet pipe of the thermostatic tank 3 through a one-way valve, so that hot water in the water outlet pipe of the thermostatic tank 3 can flow to the heating pipeline 5, but cold water in the heating pipeline 5 cannot flow to the water outlet pipe of the thermostatic tank 3, and the water outlet pipe is simultaneously connected with an external water inlet pipe of the gas water heater and used for inputting external cold water into the gas water heater. The water outlet pipe of the constant temperature tank 3 is connected with a water pipe for a user and used for supplying hot water for the user, and the water pump 6 is used for introducing cold water of the external water inlet pipe of the gas water heater or hot water of the water outlet pipe of the constant temperature tank 3 into the heating pipeline 5.
In practical application, the constant temperature tank 3 of the gas water heater shown in fig. 1 can neutralize high-temperature hot water with high ignition power, so that the water temperature fluctuation of a water consumption point is reduced, namely, the feeling of sudden cold and sudden heat during the use process of a user is reduced, the physical examination of the user is improved, when the water consumption is finished, the gas water heater enters a preheating state, the preheating temperature is the set energy-saving temperature, the temperature at the moment can not reach the bathing temperature of the user, but the far end is hot water, the user does not need to wait when using the hot water, and the gas water heater operates at the temperature, so that the energy consumption is greatly saved. However, the setting of the thermostatic tank 3 may affect the control flow of the gas water heater for preventing freezing in the standby mode, and during freezing prevention, the water temperature at the thermostatic tank 3 changes slowly, which affects the control of freezing prevention, for example: if the inlet water temperature threshold value is set to be low, the gas water heater can be easily damaged by freezing, the service life of the gas water heater is influenced, and the inlet water temperature threshold value is set to be high, the gas water heater can enter an anti-freezing mode in advance, so that energy waste is caused, and the accuracy of anti-freezing control of the whole gas water heater is influenced.
Based on the above problem, fig. 2 shows a flowchart of an anti-freezing control method for a gas water heater according to an embodiment of the present invention, which can be applied to the gas water heater shown in fig. 1, and as shown in fig. 2, the disinfection apparatus control method specifically includes the following steps:
step S101: and when the gas water heater is in a standby mode, monitoring the water inlet temperature and the water outlet temperature of the constant temperature tank. In practical application, the temperature sensors arranged at the water inlet pipe and the water outlet pipe of the constant temperature tank are used for sensing the water inlet temperature and the water outlet temperature of the constant temperature tank.
Step S102: and judging whether the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value. Specifically, this first preset temperature threshold value is a temperature value that is a little higher than this gas heater prevents frostbite and sets up the temperature, and this first preset temperature threshold value and prevent frostbite set up the temperature and all can set up according to actual need, for example: the anti-freezing setting temperature is 5 ℃, the first preset temperature threshold value can be set to 8 ℃, and the invention is not limited to this.
Step S103: and when the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value, controlling a water pump of the gas water heater to operate according to a preset rotating speed. In practical application, if the inlet water temperature or the outlet water temperature of the thermostatic tank is lower than the first preset temperature threshold, it indicates that the gas water heater is about to be subjected to anti-freezing treatment, for example: when the temperature of intaking is less than 8 ℃ of above-mentioned setting, if the user has just used up the hot water for a long time, because the temperature change is comparatively slow in the constant temperature jar, the leaving water temperature probably is very high this moment, for example at 30 ℃, consequently, in order to reduce the waste of gas resource as far as possible, reach energy-concerving and environment-protective, can utilize the slow characteristics of temperature change in the constant temperature jar, through utilizing the water pump to operate according to predetermineeing the rotational speed, this predetermine the rotational speed can be through the mode control rotational speed of the electric current of adjusting the water pump settlement, for example: the preset rotating speed is 50% -60% of the rated rotating speed of the water pump, and the invention is not limited to this. Therefore, hot water in the constant temperature tank flows into the constant temperature tank through the heating pipeline, the water inlet temperature is improved, the time for the water inlet temperature to reach the anti-freezing set temperature is reduced, the gas water heater is prevented from being damaged by freezing, and energy waste caused by the fact that the anti-freezing mode is opened in advance is avoided.
Step S104: and judging whether the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, wherein the second preset temperature threshold value is lower than the first preset temperature threshold value.
Step S105: and when the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, controlling the gas water heater to enter an anti-freezing mode. Specifically, the second preset temperature threshold is the above-mentioned freeze-proofing set temperature, for example: when the temperature of intaking had less than or equal to above-mentioned 5 ℃ that sets up, it shows that gas heater has the risk of suffering from the damage of freezing this moment, in order to avoid the emergence of this condition, need make gas heater's fan operation, the combustor is igniteed the burning, heats the water of constant temperature jar to improve the temperature in the whole gas heater, avoid gas heater to suffer from the damage of freezing.
Specifically, in an embodiment, the anti-freezing control method of the gas water heater further includes the following steps:
step S106: and judging whether the inlet water temperature is greater than a third preset temperature threshold value, wherein the third preset temperature threshold value is greater than the first preset temperature threshold value. Specifically, when the gas water heater enters the anti-freezing mode, the gas water heater automatically heats according to the heating temperature set by the user, the user can set the heating temperature through the display panel of the gas water heater, and when the outlet water temperature reaches the heating temperature, for example: at 40 ℃, the gas water heater automatically stops heating and enters a standby mode, but in practical application, the anti-freezing function can be removed without heating to the set temperature, in order to reduce energy waste, the anti-freezing mode can be exited by detecting whether the inlet water temperature is greater than a third preset temperature threshold value, so as to achieve energy saving and emission reduction, and the third preset temperature threshold value can be an energy saving temperature less than the heating temperature, for example: at 25 c, the present invention is not limited thereto.
Step S107: and when the temperature of the inlet water is higher than a third preset temperature threshold value, controlling the gas water heater to exit the anti-freezing mode, entering a standby mode, and returning to the step S101. Specifically, when the water inlet temperature of the gas water heater is higher than the set 25 ℃, the gas water heater does not need anti-freezing protection, and in order to reduce the waste of gas resources and realize energy conservation and environmental protection, the gas water heater is controlled to exit the anti-freezing mode and enter the standby mode again.
Specifically, in an embodiment, the anti-freezing control method of the gas water heater further includes the following steps:
step S108: and when the water inlet temperature and the water outlet temperature are both greater than the second preset temperature threshold value, judging whether the water inlet temperature or the water outlet temperature reaches a fourth preset temperature threshold value, wherein the fourth preset temperature threshold value is greater than the first preset temperature threshold value.
Step S109: and when the inlet water temperature or the outlet water temperature reaches a fourth preset temperature threshold value, controlling the water pump to stop running, and returning to the step S102. The fourth preset temperature threshold can be set reasonably according to actual requirements, for example, when the first preset temperature threshold is 8 ℃, the fourth preset temperature threshold value can be set to be 11 ℃, in practical application, hot water in the constant temperature tank flows back to the constant temperature tank again through the heating pipeline through the operation of the water pump, when the temperature of the inlet water and the temperature of the outlet water are both higher than the 11 ℃, the result shows that the temperature is obviously higher than the anti-freezing setting temperature of the gas water heater, because the water pump also consumes electric energy during operation, in order to further reduce energy consumption and realize energy conservation and environmental protection, and when the inlet water temperature and the outlet water temperature are both detected to be higher than 11 ℃, controlling the water pump to stop running, returning to the step S102, when the inlet water temperature or the outlet water temperature is reduced to 8 ℃ again, running the water pump again, and when the inlet water temperature or the outlet water temperature reaches 5 ℃, working the fan, the burner and the like to enable the gas water heater to perform an anti-freezing mode. Therefore, the intermittent operation of the water pump is controlled to reduce the electric energy loss so as to realize the functions of energy conservation and environmental protection.
Specifically, in an embodiment, after the step S103 and before the step S104, the anti-freeze control method for a gas water heater further includes the following steps:
step S201: monitoring whether the water flow in a water inlet pipeline of the gas water heater in a preset time meets a preset requirement or not; and when the water flow meets the preset requirement within the preset time, executing the step S104. In practical application, the situation that the water amount in the constant temperature tank is small may occur, and at this time, if the water pump is started to operate, the damage of the water pump motor may be caused, so that the judgment of the preset time period, for example: and within 2 seconds, when the water flow in the water inlet pipeline reaches a preset requirement, namely the water flow value when the water pump operates normally, the water flow in the constant temperature tank is sufficient, the water pump can continue to operate, and the step S104 is executed.
Step S202: and when the water flow does not meet the preset requirement within the preset time, controlling the water pump to stop running and entering a blockage protection mode. In practical application, if the water flow in the water inlet pipeline is lower than the water flow value of the water pump in normal operation within the 2 seconds, the water pump motor enters a blocking protection mode in order to protect the water pump motor from being damaged, and the water pump motor is stopped to work.
Specifically, in an embodiment, after the step S101 and before the step S102, the anti-freeze control method for a gas water heater further includes the steps of:
step S301: judging whether the inlet water temperature or the outlet water temperature is smaller than a second preset temperature threshold value; and when the inlet water temperature or the outlet water temperature is less than a second preset temperature threshold, executing step S105. In practical application, if one of the outlet water temperature and the inlet water temperature of the constant temperature tank is monitored to be less than 5 ℃, the gas water heater is directly controlled to enter an anti-freezing mode, anti-freezing quick response is realized, the gas water heater is prevented from being damaged by freezing, and the service life of the gas water heater is prolonged. If the inlet water temperature or the outlet water temperature is not less than the second preset temperature threshold, the above step S102 is executed. In practical application, the gas water heater enters an anti-freezing mode, the step S106 is continuously executed after combustion is started until the inlet water temperature reaches 25 ℃, combustion is stopped, the anti-freezing mode is exited, and the anti-freezing process is circulated. Therefore, the antifreezing processes of 5 ℃ and 8 ℃ in different levels are set, the control of the antifreezing process is performed in a graded antifreezing manner, the antifreezing control accuracy is improved, the energy is saved, the environment is protected, and fig. 3 is an exemplary diagram of the antifreezing control process of the antifreezing control method of the gas water heater provided by the embodiment of the invention.
By executing the steps, the antifreeze control method for the gas water heater provided by the embodiment of the invention includes that the gas water heater comprises a constant temperature tank, when the gas water heater is in a standby mode, the method obtains the water inlet temperature and the water outlet temperature of the constant temperature tank, and controls the water pump of the gas water heater to operate according to the preset rotating speed under the condition that the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value, so that the water in the constant temperature tank circulates in the pipeline of the gas water heater until the water inlet temperature or the water outlet temperature is less than or equal to the second preset temperature threshold value, and the second preset temperature threshold value is lower than the first preset temperature threshold value, so that the gas water heater is controlled to enter an antifreeze mode. The second preset temperature threshold is the anti-freezing set temperature of the gas water heater, the first preset temperature threshold is a temperature value slightly higher than the anti-freezing set temperature, so that the characteristic that the water temperature in the constant temperature tank changes slowly is utilized, when the water inlet temperature or the water outlet temperature of the constant temperature tank is monitored to be close to the anti-freezing set temperature, the water pump is controlled to work to circulate the water in the constant temperature tank, the anti-freezing control method has the advantages that the water inlet temperature or the water outlet temperature is increased, the anti-freezing mode is not started until the water inlet temperature or the water outlet temperature of the constant-temperature tank reaches the anti-freezing set temperature, and compared with a traditional anti-freezing control method for directly detecting that the water inlet temperature reaches the anti-freezing set temperature and entering the anti-freezing mode, gas resources are saved, the phenomenon that the gas water heater is easily damaged by freezing due to the fact that the water inlet temperature threshold value is set to be low is avoided, the service life of the gas water heater is prolonged, and the accuracy.
Fig. 4 shows a schematic structural diagram of an anti-freezing control device of a gas water heater provided by the invention, which is applied to a gas water heater comprising a thermostatic tank, and as shown in fig. 4, the anti-freezing control device of the gas water heater specifically comprises:
the acquisition module 101 is configured to monitor the water inlet temperature and the water outlet temperature of the constant temperature tank when the gas water heater is in the standby mode. For details, refer to the related description of step S101 in the above method embodiment, and no further description is provided here.
The first determining module 102 is configured to determine whether the inlet water temperature or the outlet water temperature is less than or equal to a first preset temperature threshold. For details, refer to the related description of step S102 in the above method embodiment, and no further description is provided here.
And the first control module 103 is used for controlling the water pump of the gas water heater to operate according to a preset rotating speed when the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value. For details, refer to the related description of step S103 in the above method embodiment, and no further description is provided here.
A second determining module 104, configured to determine whether the inlet water temperature or the outlet water temperature is less than or equal to a second preset temperature threshold, where the second preset temperature threshold is lower than the first preset temperature threshold. For details, refer to the related description of step S104 in the above method embodiment, and no further description is provided here.
And the second control module 105 is used for controlling the gas water heater to enter an anti-freezing mode when the inlet water temperature or the outlet water temperature is less than or equal to the second preset temperature threshold value. For details, refer to the related description of step S105 in the above method embodiment, and no further description is provided here.
The anti-freezing control device of the gas water heater provided by the embodiment of the invention is used for executing the anti-freezing control method of the gas water heater provided by the embodiment, the implementation manner and the principle are the same, and the detailed content refers to the relevant description of the embodiment of the method, and is not repeated.
Through the cooperative cooperation of the above components, the anti-freezing control device of the gas water heater provided by the embodiment of the invention is applied to the gas water heater comprising a constant temperature tank, when the gas water heater is in a standby mode, the device controls a water pump of the gas water heater to operate according to a preset rotating speed by acquiring the water inlet temperature and the water outlet temperature of the constant temperature tank under the condition that the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value, so that water in the constant temperature tank circulates in a pipeline of the gas water heater until the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, and the second preset temperature threshold value is lower than the first preset temperature threshold value, so that the gas water heater is controlled to enter an anti-freezing mode. The second preset temperature threshold is the anti-freezing set temperature of the gas water heater, the first preset temperature threshold is a temperature value slightly higher than the anti-freezing set temperature, so that the characteristic that the water temperature in the constant temperature tank changes slowly is utilized, when the water inlet temperature or the water outlet temperature of the constant temperature tank is monitored to be close to the anti-freezing set temperature, the water pump is controlled to work to circulate the water in the constant temperature tank, the anti-freezing control method has the advantages that the water inlet temperature or the water outlet temperature is increased, the anti-freezing mode is not started until the water inlet temperature or the water outlet temperature of the constant-temperature tank reaches the anti-freezing set temperature, and compared with a traditional anti-freezing control method for directly detecting that the water inlet temperature reaches the anti-freezing set temperature and entering the anti-freezing mode, gas resources are saved, the phenomenon that the gas water heater is easily damaged by freezing due to the fact that the water inlet temperature threshold value is set to be low is avoided, the service life of the gas water heater is prolonged, and the accuracy.
Fig. 5 shows a gas water heater according to an embodiment of the present invention, which includes a constant temperature tank, as shown in fig. 5, the gas water heater may include a temperature acquisition unit 900, a processor 901, and a memory 902, where the temperature acquisition unit 900 is connected to the processor 901, and is configured to acquire an inlet water temperature and an outlet water temperature of the constant temperature tank, and send the inlet water temperature and the outlet water temperature to the processor 901, in practical applications, the temperature acquisition unit 900 may be formed by two temperature sensors respectively disposed at an inlet pipe and an outlet pipe of the constant temperature tank, and the present invention is not limited thereto. The processor 901 and the memory 902 may be connected by a bus or other means, and fig. 5 illustrates the bus connection, and it should be noted that the constant temperature tank is not shown in fig. 5.
Specifically, the temperature acquisition unit 900 may be a temperature sensor such as: the temperature sensing chip, the temperature sensing bulb, the temperature sensor, and the like collect the water inlet temperature signal and the water outlet temperature signal of the constant temperature tank, and send the collected temperature signals to the processor 901 for corresponding processing, which is not limited in the present invention.
The memory 902, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the methods in the above-described method embodiments. The processor 901 executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory 902, that is, implements the methods in the above-described method embodiments.
The memory 902 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 901, and the like. Further, the memory 902 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 902 may optionally include memory located remotely from the processor 901, which may be connected to the processor 901 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
One or more modules are stored in the memory 902, which when executed by the processor 901 performs the methods in the above-described method embodiments.
The specific details of the electronic device may be understood by referring to the corresponding related descriptions and effects in the above method embodiments, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, and the implemented program can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. An anti-freezing control method of a gas water heater, the gas water heater comprising: the constant temperature tank is characterized in that the anti-freezing control method of the gas water heater comprises the following steps:
when the gas water heater is in a standby mode, monitoring the water inlet temperature and the water outlet temperature of the constant temperature tank;
judging whether the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value or not;
when the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value, controlling a water pump of the gas water heater to operate according to a preset rotating speed;
judging whether the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, wherein the second preset temperature threshold value is lower than the first preset temperature threshold value;
and when the water inlet temperature or the water outlet temperature is less than or equal to the second preset temperature threshold value, controlling the gas water heater to enter an anti-freezing mode.
2. The antifreeze control method for a gas water heater as set forth in claim 1, further comprising:
judging whether the inlet water temperature is greater than a third preset temperature threshold value, wherein the third preset temperature threshold value is greater than the first preset temperature threshold value;
and when the water inlet temperature is higher than the third preset temperature threshold value, controlling the gas water heater to exit the anti-freezing mode, entering the standby mode, and returning to the step of monitoring the water inlet temperature and the water outlet temperature of the gas water heater when the gas water heater is in the standby mode.
3. The antifreeze control method for a gas water heater as set forth in claim 1, further comprising:
when the water inlet temperature and the water outlet temperature are both greater than the second preset temperature threshold value, judging whether the water inlet temperature or the water outlet temperature reaches a fourth preset temperature threshold value, wherein the fourth preset temperature threshold value is greater than the first preset temperature threshold value;
and when the water inlet temperature or the water outlet temperature reaches the fourth preset temperature threshold value, controlling the water pump to stop running, and returning to the step of judging whether the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value.
4. The anti-freezing control method of the gas water heater according to claim 1, wherein after the water pump controlling the gas water heater is operated at a preset rotation speed, before the determining whether the inlet water temperature or the outlet water temperature is less than or equal to a second preset temperature threshold, the anti-freezing control method of the gas water heater further comprises:
monitoring whether the water flow in a water inlet pipeline of the gas water heater in a preset time meets a preset requirement or not;
and when the water flow meets a preset requirement within the preset time, executing the step of judging whether the inlet water temperature or the outlet water temperature is less than or equal to a second preset temperature threshold value.
5. The antifreeze control method for a gas water heater as set forth in claim 4, further comprising:
and when the water flow does not meet the preset requirement within the preset time, controlling the water pump to stop running and entering a blockage protection mode.
6. The anti-freezing control method for the gas water heater according to claim 1, wherein after the monitoring of the inlet water temperature and the outlet water temperature of the thermostatic tank, before the determining whether the inlet water temperature or the outlet water temperature is less than or equal to a first preset temperature threshold, the anti-freezing control method for the gas water heater further comprises:
judging whether the water inlet temperature or the water outlet temperature is smaller than a second preset temperature threshold value or not;
and when the water inlet temperature or the water outlet temperature is not less than the second preset temperature threshold, executing the step of judging whether the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold.
7. The antifreeze control method for a gas water heater as set forth in claim 6, further comprising:
and when the water inlet temperature or the water outlet temperature is smaller than the second preset temperature threshold value, executing the step of controlling the gas water heater to enter an anti-freezing mode.
8. An anti-freezing control device of a gas water heater, the gas water heater comprising: constant temperature jar, its characterized in that, gas heater's freeze-proof controlling means includes:
the acquisition module is used for monitoring the water inlet temperature and the water outlet temperature of the constant temperature tank when the gas water heater is in a standby mode;
the first judgment module is used for judging whether the water inlet temperature or the water outlet temperature is less than or equal to a first preset temperature threshold value or not;
the first control module is used for controlling the water pump of the gas water heater to operate according to a preset rotating speed when the water inlet temperature or the water outlet temperature is less than or equal to the first preset temperature threshold value;
the second judgment module is used for judging whether the water inlet temperature or the water outlet temperature is less than or equal to a second preset temperature threshold value, and the second preset temperature threshold value is lower than the first preset temperature threshold value;
and the second control module is used for controlling the gas water heater to enter an anti-freezing mode when the water inlet temperature or the water outlet temperature is less than or equal to the second preset temperature threshold value.
9. A gas water heater comprising: constant temperature jar, its characterized in that, gas heater still includes:
the temperature acquisition unit is arranged on the constant temperature tank and is used for acquiring the water inlet temperature and the water outlet temperature of the constant temperature tank;
a memory and a processor, the memory and the processor are connected with each other in communication, the memory stores computer instructions, and the processor executes the computer instructions to execute the anti-freezing control method of the gas water heater according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions for causing the computer to thereby execute the antifreeze control method of a gas water heater according to any one of claims 1 to 7.
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| CN202010650075.XA CN111664573A (en) | 2020-07-08 | 2020-07-08 | Anti-freezing control method and device for gas water heater |
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| CN202010650075.XA CN111664573A (en) | 2020-07-08 | 2020-07-08 | Anti-freezing control method and device for gas water heater |
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