Hot water circulator and control method thereof, computer equipment and medium

Abstract

The invention relates to a hot water circulator, a control method thereof, computer equipment and a medium. The method comprises the steps that the initial return water temperature is recorded, and the initial return water temperature is the return water temperature uploaded by a second temperature sensor when a water pump is started; the operation executed when the water pump runs comprises the steps that when the return water temperature uploaded by the second temperature sensor does not reach the target temperature and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, whether the return water temperature is larger than the initial return water temperature or not is detected; whether the difference value between the return water temperature and the initial return water temperature is larger than a preset difference value threshold value or not is detected; if the two detection results are greater than each other, determining the temperature rise gradient of the return water temperature in the later preset time period; and when the temperature rise gradient is not larger than the preset difference threshold value, the water pump is closed. Through the steps of the method, the invalid operation time of the hot water circulator can be shortened, the electric energy loss is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of hot water circulators, and in particular to a hot water circulator and a control method thereof, a computer device, and a medium. Background Art

[0002] A hot water circulator is a device that can circulate hot water back to the hot water supply system, which can reduce the waiting time for hot water, improve the convenience and comfort of life, and achieve the purpose of water saving. It has been widely used. Generally, the main components of a hot water circulator include a water pump, a controller, a temperature sensor, a water flow sensor, etc.

[0003] However, the inventors have realized that when the hot water circulator is installed in a circulation piping system with a hot water tank (such as an air-energy water heater, a solar water heater, etc.), the hot water circulator has various operating problems. For example, Figure 1 As shown, the hot water circulator can be installed at position 1, that is, the outlet of the hot water tank. Or it can be installed at position 2, the inlet of the cold water of the hot water tank. If the hot water circulator is installed at position 1, the hot water circulator will be hot water as soon as it is started. After the controller detects the temperature through the temperature sensor, it will immediately stop, so that the purpose of circulating hot water in the entire pipeline system cannot be achieved. If the hot water circulator is installed at position 2, since there is no water flow through the hot water circulator when the user turns on and off the faucet, the controller cannot detect the signal of the water flow sensor, so it cannot be started by water control, that is, the hot water circulator is started by the user turning on and off the faucet, which reduces the user's experience. In addition, if the hot water circulator is installed at position 2, whether it is because the pipeline of the hot water circulator installed at position 2 is too long, resulting in a large loss of water temperature in the pipeline, or because the user turns on the faucet to use water before the hot water circulation ends, the water temperature at the hot water circulator will not reach the set temperature value, causing the hot water circulator to be invalid for too long. In addition, if the hot water circulator runs for too long, it is easy to cause the outlet water temperature of the pipeline system to be too high, which will scald the user. Summary of the invention

[0004] In view of the above-mentioned deficiencies or shortcomings, the present application provides a hot water circulator and a control method thereof, a computer device and a medium. The hot water circulator in the embodiment of the present application is equipped with two temperature sensors, and by judging the temperature values ​​detected by the two temperature sensors, the risk of scalding of the user when using the hot water circulator is avoided, the ineffective operation time of the hot water circulator is reduced, the power loss is reduced, and the service life of the device is extended.

[0005] According to a first aspect, the present application provides a control method for a hot water circulator, the hot water circulator comprising a main controller, and a first temperature sensor, a second temperature sensor and a water pump respectively connected to the main controller; the water pump is installed on a water outlet pipe of a hot water tank in a hot water circulation pipe, comprising:

[0006] Record the initial return water temperature, which is the return water temperature uploaded by the second temperature sensor when the water pump is turned on;

[0007] While the pump is running, do the following:

[0008] When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, detect whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and detect whether the difference between the return water temperature and the initial return water temperature is greater than a preset difference threshold;

[0009] If the return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than a preset difference threshold, the temperature rise gradient corresponding to the preset time period is determined based on the return water temperature uploaded by the second temperature sensor within the subsequent preset time period;

[0010] When the temperature rise gradient is not greater than the preset difference threshold, the water pump is turned off.

[0011] In some embodiments, the above method further comprises:

[0012] During pump operation, the following operations are also performed:

[0013] When the return water temperature uploaded by the second temperature sensor reaches the preset target temperature, the water pump is turned off.

[0014] In some embodiments, the above method further comprises:

[0015] During pump operation, the following operations are also performed:

[0016] When the outlet water temperature uploaded by the first temperature sensor reaches the preset protection temperature, the water pump is turned off, and the temperature value of the target temperature is modified to the return water temperature uploaded by the second temperature sensor at the current moment.

[0017] In some embodiments, the above method further comprises:

[0018] During pump operation, the following operations are also performed:

[0019] When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, the water pump is kept in operation.

[0020] In some embodiments, the above method further comprises:

[0021] During pump operation, the following operations are also performed:

[0022] If the difference between the return water temperature and the initial return water temperature does not exceed the preset difference threshold, the water pump is kept in operation.

[0023] In some embodiments, the above method further comprises:

[0024] During pump operation, the following operations are also performed:

[0025] When the temperature rise gradient is greater than the preset difference threshold, the water pump is kept in operation.

[0026] In some embodiments, the hot water circulator further includes a water flow sensor, which is connected to the main controller; before starting the water pump, the method further includes:

[0027] Receive water flow change information uploaded by the water flow sensor;

[0028] When the water flow change information indicates that the hot water extraction valve is open, the water pump is started.

[0029] According to another aspect, the present application provides a hot water circulator, which includes a main controller, and a first temperature sensor, a second temperature sensor and a water pump respectively connected to the main controller; the water pump is installed on the outlet pipe of the hot water tank in the hot water circulation pipe, the first temperature sensor and the second temperature sensor are respectively used to collect the outlet water temperature and the return water temperature of the hot water tank regularly or irregularly and upload them to the main controller; the main controller includes:

[0030] An initial water temperature acquisition module is used to record the initial return water temperature, where the initial return water temperature is the return water temperature uploaded by the second temperature sensor when the water pump is turned on;

[0031] The circulating water temperature control module is used to perform the following operations during the operation of the water pump:

[0032] When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, detect whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and detect whether the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold; if the return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold, determine the temperature rise gradient corresponding to the preset time period based on the return water temperature uploaded by the second temperature sensor within the subsequent preset time period; when the temperature rise gradient is not greater than the preset difference threshold, turn off the water pump.

[0033] According to another aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the above-mentioned methods for controlling a hot water circulator are implemented.

[0034] According to another aspect, the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the above-mentioned methods for controlling a hot water circulator when executing the computer program.

[0035] In the above-mentioned embodiment of the present application, when the water pump is turned on, the main controller records the return water temperature uploaded by the second temperature sensor and records it as the initial return water temperature. Then, during the operation of the water pump, the following operations are performed: when the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, it indicates that the hot water circulation of the hot water tank has not been completed, and the outlet water temperature of the current pipeline will not scald the user. Then, it is detected whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and it is detected that the difference obtained by subtracting the initial return water temperature from the return water temperature is greater than the preset difference threshold. If the return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold, it indicates that hot water passes through the second temperature sensor, and the temperature rise gradient corresponding to the preset time period is determined based on the return water temperature uploaded by the second temperature sensor in the subsequent preset time period; when the temperature rise gradient is not greater than the preset difference threshold, it is considered that the temperature loss in the pipeline or the user has turned on the faucet and is using hot water, so that the hot water temperature in the return water pipeline cannot continue to rise, and then the water pump is turned off. Through the steps of the above method, the ineffective operation time of the hot water circulator can be reduced, the power loss can be reduced, and the service life of the equipment can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of an existing hot water circulation system with a hot water tank;

[0037] Figure 2 A schematic diagram of the structure of a hot water circulator in one or more embodiments of the present application;

[0038] Figure 3 A schematic diagram of the structure of a hot water circulation system in one or more embodiments of the present application;

[0039] Figure 4 A flow chart of a control method for a hot water circulator in one or more embodiments of the present application;

[0040] Figure 5 A flow chart of a method for starting a water control mode in one or more embodiments of the present application;

[0041] Figure 6 A flow chart of the operation steps after the hot water circulator is started in one or more embodiments of the present application;

[0042] Figure 7 This is a schematic diagram of the structure of a main controller of a hot water circulator in one or more embodiments of the present application.

[0043] Figure 8 A schematic diagram of the structure of a computer device in one or more embodiments of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] According to a first aspect, the present application provides a control method for a hot water circulator, such as Figure 2 The structural diagram of the hot water circulator shown in the figure comprises a main controller, and a first temperature sensor, a second temperature sensor and a water pump respectively connected to the main controller. The second temperature sensor can be connected to the main controller by wire or wireless connection.

[0046] In such Figure 3 In the structural diagram of the hot water circulation system shown in the figure, the water pump of the hot water circulator is installed on the outlet pipe of the hot water tank, and the first temperature sensor and the second temperature sensor are used to collect the outlet water temperature and return water temperature of the hot water tank regularly or irregularly and upload them to the main controller. Among them, one or more faucets are generally installed between the outlet pipe and the return pipe. Figure 2 The hot water circulation system is equipped with three faucets. A check valve is also installed on the return pipe to prevent cold water from flowing back into the faucet, return pipe and outlet pipe. Moreover, the second temperature sensor is either installed on a section of the pipe between the check valve and the hot water tank, or on a section of the pipe between the check valve and the faucet. Secondly, the hot water circulation system is also connected to multiple cold water interfaces. Specifically, a section of the pipe between the check valve and the hot water tank is connected to a cold water interface, and each faucet is connected to a cold water interface and a water outlet of the hot water tank, so as to achieve mixing of cold water and hot water in the pipe.

[0047] This method is applied to the main controller, such as Figure 3 As shown, including:

[0048] S110: Recording the initial return water temperature, where the initial return water temperature is the return water temperature uploaded by the second temperature sensor when the water pump is turned on;

[0049] Specifically, the water pump of the hot water circulator can be turned on by the main controller or manually. When the water pump is turned on, the hot water from the hot water tank has not yet flowed into the return water pipeline. At this time, the initial return water temperature recorded by the main controller is the cold water or hot water temperature in the return water pipeline before the water pump is turned on.

[0050] In some embodiments, the hot water circulator further comprises a water flow sensor, which is connected to the main controller; before starting the water pump, Figure 5 As shown, the method also includes:

[0051] S210: receiving water flow change information uploaded by the water flow sensor;

[0052] S220: When the water flow change information indicates that the hot water extraction valve is open, the water pump is started.

[0053] Specifically, the water flow sensor and the main controller can be connected by wire, and the water flow sensor and the first temperature sensor are installed on the same water outlet pipe. Generally, the water flow sensor and the first temperature sensor are installed on the pipes at both ends of the water pump respectively. The water flow change information is specifically the real-time change of the water flow in the water outlet pipe. When the user turns on the faucet to take hot water, the hot water on the water outlet pipe is taken, causing the water flow in the water outlet pipe to change. The change will be uploaded to the main controller by the water flow sensor as water flow change information, and finally the main controller starts the water pump. Through the steps of the above method, water control mode startup is realized, that is, when the user opens the hot water access valve, the water pump starts and outputs hot water.

[0054] For example, Figure 2 The internal structure of the hot water circulator shown in FIG. 1 is a first temperature sensor, namely Figure 2 The temperature sensor 1 and the water flow sensor are installed at both ends of the water pump. Moreover, the water flow direction of the water outlet pipe is either from the water flow sensor to the temperature sensor 1, or from the temperature sensor 1 to the water flow sensor.

[0055] While the pump is running, do the following:

[0056] S120: When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, detecting whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and detecting whether the difference between the return water temperature and the initial return water temperature is greater than a preset difference threshold;

[0057] Specifically, the target temperature is the hot water temperature set by the user. If the return water temperature uploaded by the second temperature sensor does not reach the target temperature, it indicates that the hot water from the hot water tank has not fully passed through the second temperature sensor, and the hot water circulation of the hot water tank has not been completed. The protection temperature is a preset water temperature, which is used when the wall hot water temperature is too high to prevent the user from being scalded by hot water when turning on the faucet. If the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, it indicates that the hot water temperature in the current outlet water pipeline is within a safe range. Then, when it is determined that the hot water circulation of the hot water tank has not been completed and the hot water temperature in the outlet water pipeline is within a safe range, the main controller detects whether the return water temperature is greater than the initial return water temperature through the second temperature sensor, and at the same time determines whether the difference obtained by subtracting the initial return water temperature from the return water temperature is greater than the preset difference. Among them, the preset difference is used to define how much the return water temperature exceeds the initial return water temperature.

[0058] S130: If the return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than a preset difference threshold, determine a temperature rise gradient corresponding to the preset time period based on the return water temperature uploaded by the second temperature sensor in the subsequent preset time period;

[0059] S140: When the temperature rise gradient is not greater than the preset difference threshold, turn off the water pump.

[0060] Specifically, if the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and the difference obtained by subtracting the initial return water temperature from the return water temperature is greater than the preset difference threshold, it indicates that the hot water from the hot water tank has passed through the second temperature sensor. Then, the main controller will monitor the temperature rise gradient of the return water temperature in the return water pipeline in the next preset time period through the second temperature sensor. Among them, because the water pump of the hot water circulator is still in working state before the hot water circulation of the hot water tank is completed, the water temperature in the pipeline continues to rise, and the return water temperature in the return water pipeline will have a temperature rise gradient within the preset time period. At this time, the main controller also needs to determine whether the temperature rise gradient within the preset time period does not exceed the preset difference threshold. If not, it is considered that there is temperature loss in the pipeline or the user has turned on the faucet and is using hot water, so that the hot water temperature in the return water pipeline cannot continue to rise. At this time, the main controller turns off the water pump to prevent the hot water circulator from running ineffectively for a long time.

[0061] Exemplarily, the preset difference can be set to 2 degrees Celsius, the setting range of the preset difference is generally 1-4 degrees Celsius, the preset time period can be set to 2 minutes, and the preset difference threshold can be set to 2 degrees Celsius. When the difference obtained by subtracting the initial return water temperature from the return water temperature is greater than the preset difference threshold, the hot water from the hot water tank has not fully passed through the second temperature sensor, and the hot water circulation of the hot water tank has not been completed. When the temperature rise gradient in the return water pipeline does not exceed 2 degrees Celsius within 2 minutes, it indicates that the user is turning on the faucet to use hot water, and the main controller turns off the water pump. Through the steps of the above method, the ineffective operation time of the hot water circulator can be reduced, the power loss can be reduced, and the service life of the equipment can be extended.

[0062] In some embodiments, the above method further comprises:

[0063] During pump operation, the following operations are also performed:

[0064] When the return water temperature uploaded by the second temperature sensor reaches the preset target temperature, the water pump is turned off.

[0065] Specifically, when the return water temperature reaches the target temperature set by the user, it indicates that the hot water circulation of the hot water tank is completed, and the main controller turns off the water pump.

[0066] For example, the preset target temperature can be set to 42 degrees Celsius, and the target temperature is generally 35-45 degrees Celsius. When the return water temperature reaches 42 degrees Celsius, the main controller turns off the water pump. Through the steps of the above method, after the circulation heating of the entire pipeline is completed, the water pump is turned off in time, the ineffective operation time of the hot water circulator is reduced, the power loss is reduced, and the service life of the equipment is extended.

[0067] In some embodiments, the above method further comprises:

[0068] During pump operation, the following operations are also performed:

[0069] When the outlet water temperature uploaded by the first temperature sensor reaches the preset protection temperature, the water pump is turned off, and the target temperature is modified to the return water temperature uploaded by the second temperature sensor at the current moment.

[0070] Specifically, when the outlet water temperature reaches the preset protection temperature, it indicates that the hot water temperature in the current outlet water pipeline is high. The main controller therefore determines that the current outlet water poses a risk of scalding the user. It then turns off the water pump and modifies the target temperature to the outlet water temperature uploaded by the first temperature sensor to update the target temperature.

[0071] For example, the preset protection temperature can be set to 50 degrees Celsius. When the temperature of the hot water in the water outlet pipe reaches 50 degrees Celsius, the main controller turns off the water pump. Through the steps of the above method, the risk of scalding when the user turns on the faucet to use hot water is avoided.

[0072] In some embodiments, the above method further comprises:

[0073] During pump operation, the following operations are also performed:

[0074] When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, the water pump is kept in operation.

[0075] Specifically, when the return water temperature does not reach the target temperature and the outlet water temperature does not reach the protection temperature, it indicates that the hot water circulation of the hot water tank has not been completed. At this time, the main controller maintains the normal operation of the water pump. Through the steps of the above method, the hot water in the heating pipeline can be controlled to circulate.

[0076] In some embodiments, the above method further comprises:

[0077] During pump operation, the following operations are also performed:

[0078] If the difference between the return water temperature and the initial return water temperature does not exceed the preset difference threshold, the water pump is kept in operation.

[0079] Specifically, if the difference between the return water temperature and the initial return water temperature does not exceed the preset difference threshold, it indicates that the circulation heating of the entire pipeline is not completed. At this time, the main controller maintains the normal operation of the water pump.

[0080] In some embodiments, the method further comprises:

[0081] During pump operation, the following operations are also performed:

[0082] When the temperature rise gradient is greater than the preset difference threshold, the water pump is kept in operation.

[0083] Specifically, if the temperature rise gradient is greater than the preset difference threshold, it indicates that the user has not yet turned on the faucet to take hot water, and there has been no hot water loss in the return water pipeline, and the hot water in the pipeline is in a normal temperature rise state. At this time, the main controller maintains the normal operation of the water pump to allow the hot water circulator to continue to circulate hot water.

[0084] For example, Figure 6 As shown in the flowchart of the operation steps after the hot water circulator is started, the water pump is turned on after the hot water circulator is started, the main controller of the hot water circulator clears the built-in temperature standard flag, and records the return water temperature uploaded by the second temperature sensor as the initial return water temperature (i.e. Figure 6 T2 in the above). Among them, the temperature compliance flag is used to determine whether it is necessary to introduce a preset time period to determine whether the temperature rise gradient of the return water pipeline can exceed the preset difference threshold. Specifically, when the flag is 0, the operation of determining whether the temperature rise gradient exceeds the preset difference threshold will be executed in each timed task, and it will not be determined whether the detection time has timed out; once the temperature rise gradient exceeds the preset difference threshold, the flag is set to 1, and from then on, the temperature rise gradient of the return water pipeline will be timed in subsequent timed tasks to determine whether the temperature rise gradient within the preset time period can exceed the preset difference threshold. Then, during the operation of the water pump, detect whether the outlet water temperature uploaded by the first temperature sensor exceeds the protection temperature. If exceeded, it indicates that there is a risk of scalding the user at this time, and the water pump is stopped. If not exceeded, continue to determine whether the return water temperature uploaded by the second temperature sensor reaches the target temperature. If reached, it indicates that the circulation heating of the entire pipeline is completed, and the water pump is stopped. If it is not reached, and the temperature compliance flag is set to zero, the main controller determines whether the current return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold. If so, the main controller first sets the temperature compliance flag to 1, indicating that hot water has passed through the second temperature sensor, and determines the temperature rise gradient corresponding to the preset time period based on the return water temperature uploaded by the second temperature sensor in the subsequent preset time period. When the temperature rise gradient is not greater than the preset difference threshold, it is considered that the user is using hot water at this time, causing the temperature rise loss of the hot water, and the water pump is turned off to avoid excessive ineffective operation. If not, the temperature compliance flag remains unchanged, and the main controller again determines whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature during the next round of timing detection, and the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold.

[0085] Through the steps of the above method, a control method for shutting down the hot water circulator under multiple conditions can be implemented, thereby avoiding the risk of users being scalded when using the hot water circulator, reducing the ineffective operation time of the hot water circulator, reducing power loss, and extending the service life of the equipment.

[0086] According to another aspect, the present application provides a hot water circulator, such as Figure 7 As shown, the hot water circulator includes a main controller, and a first temperature sensor, a second temperature sensor and a water pump respectively connected to the main controller; the water pump is installed on the outlet pipe of the hot water tank in the hot water circulation pipeline, and the first temperature sensor and the second temperature sensor are respectively used to collect the outlet water temperature and return water temperature of the hot water tank regularly or irregularly and upload them to the main controller; the main controller includes:

[0087] An initial water temperature acquisition module 110 is used to record an initial return water temperature, where the initial return water temperature is the return water temperature uploaded by the second temperature sensor when the water pump is turned on;

[0088] The circulating water temperature control module 120 is used to perform the following operations during the operation of the water pump:

[0089] When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, detect whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and detect whether the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold; if the return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold, determine the temperature rise gradient corresponding to the preset time period based on the return water temperature uploaded by the second temperature sensor within the subsequent preset time period; when the temperature rise gradient is not greater than the preset difference threshold, turn off the water pump.

[0090] During the operation of the water pump, the circulating water temperature control module 120 is also used to perform the following operations:

[0091] When the return water temperature uploaded by the second temperature sensor reaches the preset target temperature, the water pump is turned off;

[0092] When the outlet water temperature uploaded by the first temperature sensor reaches the preset protection temperature, the water pump is turned off, and the target temperature is modified to the return water temperature uploaded by the second temperature sensor at the current moment;

[0093] When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, the water pump is kept in operation;

[0094] If the difference between the return water temperature and the initial return water temperature does not exceed the preset difference threshold, the water pump is kept in operation; and

[0095] When the temperature rise gradient is greater than the preset difference threshold, the water pump is kept in operation;

[0096] Before starting the water pump, the circulating water temperature control module 120 is also used to perform the following operations:

[0097] Receive water flow change information uploaded by the water flow sensor;

[0098] When the water flow change information indicates that the hot water extraction valve is open, the water pump is started.

[0099] According to another aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the above-mentioned methods for controlling a hot water circulator are implemented.

[0100] According to another aspect, the present application provides a computer device, such as Figure 8As shown, it includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of any of the above-mentioned methods for controlling a hot water circulator are implemented.

[0101] Those skilled in the art can understand that all or part of the processes in the above method embodiments can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium, and when the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (RamCus), direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0102] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0103] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

[0104] Finally, it should be noted that in this article, relational terms such as first and second are only used to refer to

[0105] One entity or operation is distinguished from another entity or operation without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device that includes the element.

Claims

1. A method for controlling a hot water circulator, characterized in that: The hot water circulator comprises a main controller, and a first temperature sensor, a second temperature sensor and a water pump respectively connected to the main controller; the water pump is installed on the outlet pipe of the hot water tank in the hot water circulation pipe, and comprises: Recording the initial return water temperature, where the initial return water temperature is the return water temperature uploaded by the second temperature sensor when the water pump is turned on; During the operation of the pump, the following operations are performed: When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, detecting whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and detecting whether the difference between the return water temperature and the initial return water temperature is greater than a preset difference threshold; If the return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than a preset difference threshold, the temperature rise gradient corresponding to the preset time period is determined based on the return water temperature uploaded by the second temperature sensor within the subsequent preset time period; When the temperature rise gradient is not greater than the preset difference threshold, the water pump is turned off.

2. The method according to claim 1, characterized in that The method further comprises: During the operation of the water pump, the following operations are also performed: When the return water temperature transmitted by the second temperature sensor reaches a preset target temperature, the water pump is turned off.

3. The method according to claim 1, characterized in that: The method further comprises: During the operation of the water pump, the following operations are also performed: When the outlet water temperature uploaded by the first temperature sensor reaches the preset protection temperature, the water pump is turned off, and the target temperature is modified to the return water temperature uploaded by the second temperature sensor at the current moment.

4. The method according to claim 1, characterized in that: The method further comprises: During the operation of the water pump, the following operations are also performed: When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, the running state of the water pump is maintained.

5. The method according to claim 1, characterized in that The method further comprises: During the operation of the water pump, the following operations are also performed: If the difference between the return water temperature and the initial return water temperature does not exceed the preset difference threshold, the running state of the water pump is maintained.

6. The method according to claim 1, characterized in that The method further comprises: During the operation of the water pump, the following operations are also performed: When the temperature rise gradient is greater than the preset difference threshold, the running state of the water pump is maintained.

7. The method according to claim 1, characterized in that The hot water circulator further includes a water flow sensor, which is connected to the main controller; before starting the water pump, the method further includes: Receiving water flow change information uploaded by the water flow sensor; When the water flow change information indicates that the hot water extraction valve is opened, the water pump is started.

8. A hot water circulator, characterized in that: The hot water circulator comprises a main controller, and a first temperature sensor, a second temperature sensor and a water pump respectively connected to the main controller; the water pump is installed on the outlet pipe of the hot water tank in the hot water circulation pipe; the main controller comprises: An initial water temperature acquisition module, used to record an initial return water temperature, where the initial return water temperature is the return water temperature uploaded by the second temperature sensor when the water pump is turned on; The circulating water temperature control module is used to perform the following operations during the operation of the water pump: When the return water temperature uploaded by the second temperature sensor does not reach the target temperature, and the outlet water temperature uploaded by the first temperature sensor does not reach the protection temperature, detect whether the return water temperature uploaded by the second temperature sensor is greater than the initial return water temperature, and detect whether the difference between the return water temperature and the initial return water temperature is greater than a preset difference threshold; if the return water temperature is greater than the initial return water temperature, and the difference between the return water temperature and the initial return water temperature is greater than the preset difference threshold, determine the temperature rise gradient corresponding to the preset time period based on the return water temperature uploaded by the second temperature sensor within the subsequent preset time period; when the temperature rise gradient is not greater than the preset difference threshold, turn off the water pump.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

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