A control method and device for a wall-mounted boiler

Abstract

The application relates to a control method of a wall-hanging stove and relates to the technical field of water heaters. The method comprises the following steps: acquiring a current water outlet temperature and a current backwater temperature of the wall-hanging stove in real time; acquiring an initial water pipe temperature, a running water flow and a load required per unit temperature; determining a target combustion load according to a target backwater temperature input by a user, the initial water pipe temperature, a preset water flow constant, the running water flow, a combustion load coefficient, a minimum combustion load and a maximum combustion load; running according to the target combustion load; in each update cycle within a first running duration, updating the target combustion load according to the current backwater temperature, the running water flow, the target backwater temperature and the water flow constant; after the first running duration, updating the target combustion load according to the current backwater temperature, the load required per unit temperature, the target combustion load and the target backwater temperature; and stopping running when a second running duration is reached. The application can avoid frequent starting of the wall-hanging stove and make heating more stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water heaters, in particular to a control method and device of a wall-mounted boiler. BACKGROUND

[0002] At present, wall-mounted boilers are increasingly used by more and more families because of the economy and convenience of gas heating. Especially in the long winter in the north, service life and energy-saving operation are important selection criteria for users to choose wall-mounted boiler products. Because of the different user usage areas, pipeline resistance and environmental temperature, the required load of the wall-mounted boiler is also different. If a large load combustion is used, the water pipe quickly reaches the set temperature, but the environmental temperature is low, the water pipe cools down quickly, and after the water pipe cools down, the wall-mounted boiler starts again, and frequent starting of the wall-mounted boiler cannot guarantee smooth heating effect. If too small load combustion is used, the water pipe temperature cannot reach the set temperature for a long time, which will also affect the heating effect when the environmental temperature is particularly low.

[0003] Therefore, there is an urgent need for a control method of a wall-mounted boiler. SUMMARY

[0004] Therefore, it is necessary to provide a control method and device of a wall-mounted boiler in view of the above technical problems.

[0005] In a first aspect, a control method of a wall-mounted boiler is provided, and the method comprises:

[0006] real-time acquisition of a current outlet water temperature of an outlet water pipe of the wall-mounted boiler and a current return water temperature of a return water pipe;

[0007] acquisition of an initial water pipe temperature, a running water flow and a unit temperature required load of the wall-mounted boiler;

[0008] determination of a required combustion load according to a target return water temperature input by a user in advance, the initial water pipe temperature, a preset water flow constant and the running water flow;

[0009] determination of a target combustion load according to the required combustion load, a preset combustion load coefficient, a preset minimum combustion load and a preset maximum combustion load;

[0010] control of the wall-mounted boiler to run according to the target combustion load;

[0011] for each preset update period within a preset first running duration, determination of a required combustion load according to a current return water temperature, the running water flow, the target return water temperature and the water flow constant, and execution of the step of determining a target combustion load according to the required combustion load, a preset combustion load coefficient, a preset minimum combustion load and a preset maximum combustion load;

[0012] When the wall-hanging stove runs for the first running time length, the target combustion load is updated according to the current return water temperature, the unit temperature required load, the target combustion load and the target return water temperature;

[0013] When the running time length of the wall-hanging stove reaches a preset second running time length, the wall-hanging stove is controlled to stop running.

[0014] As an optional implementation, the initial water pipe temperature, the running water flow and the unit temperature required load of the wall-hanging stove are obtained by:

[0015] In the pre-cleaning stage, the current outlet water temperature of the wall-hanging stove is determined as the initial water pipe temperature;

[0016] After the pre-cleaning stage ends, the preset minimum combustion load of the wall-hanging stove is determined as the target combustion load, and the wall-hanging stove is controlled to run for a preset third running time length according to the target combustion load, and then the running water flow of the wall-hanging stove is determined according to the target combustion load, the initial water pipe temperature, the current outlet water temperature and a preset water flow constant.

[0017] The unit temperature required load is determined according to the running water flow and the water flow constant.

[0018] As an optional implementation, the formula for determining the running water flow of the wall-hanging stove according to the target combustion load, the initial water pipe temperature, the current outlet water temperature and the preset water flow constant is:

[0019] Q=W target K / (T out -T0);

[0020] Wherein, Q is the running water flow, W target is the target combustion load, K is the preset water flow constant, T out is the current outlet water temperature, and T0 is the initial water pipe temperature.

[0021] As an optional implementation, the formula for determining the unit temperature required load according to the running water flow and the water flow constant is:

[0022] ΔW=QΔT / K;

[0023] Wherein, ΔW is the unit temperature required load, Q is the running water flow, ΔT is the unit temperature, and K is the water flow constant.

[0024] As an optional implementation, the formula for determining the demand combustion load according to the target return water temperature input by the user in advance, the initial water pipe temperature, the preset water flow constant and the running water flow is:

[0025] W in = Q(T SET -T0) / K;

[0026] wherein W in is the required combustion load, Q is the running water flow, T SET is the target return water temperature, T0 is the initial water pipe temperature, and K is the water flow constant.

[0027] As an optional implementation, the combustion load coefficient includes a first combustion load coefficient and a second combustion load coefficient, and the determining the target combustion load according to the required combustion load, the preset combustion load coefficient, the preset minimum combustion load, and the preset maximum combustion load includes:

[0028] if the product of the first combustion load coefficient and the required combustion load is less than the minimum combustion load, determining the minimum combustion load as the target combustion load;

[0029] if the product of the first combustion load coefficient and the required combustion load is greater than or equal to the minimum combustion load, and the product of the first combustion load coefficient and the required combustion load is less than or equal to the maximum combustion load, determining the product of the first combustion load coefficient and the required combustion load as the target combustion load;

[0030] if the product of the first combustion load coefficient and the required combustion load is greater than the maximum combustion load, determining the product of the second combustion load coefficient and the maximum combustion load as the target combustion load.

[0031] As an optional implementation, the formula for determining the required combustion load according to the current return water temperature, the running water flow, the target return water temperature, and the water flow constant is:

[0032] W in = Q(T SET -T in ) / (2K);

[0033] wherein W in is the required combustion load, Q is the running water flow, T SET is the target return water temperature, T in is the current return water temperature, and K is the water flow constant.

[0034] As an optional implementation, the updating the target combustion load according to the current return water temperature, the unit temperature required load, the target combustion load, and the target return water temperature includes:

[0035] when the current return water temperature is less than the target return water temperature, the updated target combustion load is determined as a sum of the target combustion load and the unit temperature required load for each unit temperature increase of the current return water temperature;

[0036] when the current return water temperature is equal to the target return water temperature, the updated target combustion load is determined as a difference of the target combustion load and the unit temperature required load for each unit temperature increase of the current return water temperature.

[0037] As an optional implementation, after the wall-hanging stove is controlled to stop running, the method further comprises:

[0038] when the current return water temperature is less than or equal to a preset restart temperature threshold, the current return water temperature is determined as an initial water pipe temperature, and the step of determining the required combustion load according to the target return water temperature input by the user in advance, the initial water pipe temperature, a preset water flow constant and the running water flow is performed.

[0039] In a second aspect, a control device of a wall-hanging stove is provided, and the device comprises:

[0040] a first acquisition module, configured to acquire a current outlet water temperature of an outlet water pipe and a current return water temperature of a return water pipe of the wall-hanging stove in real time;

[0041] a second acquisition module, configured to acquire an initial water pipe temperature, a running water flow and a unit temperature required load of the wall-hanging stove;

[0042] a first determination module, configured to determine a required combustion load according to a target return water temperature input by a user in advance, the initial water pipe temperature, a preset water flow constant and the running water flow;

[0043] a second determination module, configured to determine a target combustion load according to the required combustion load, a preset combustion load coefficient, a preset minimum combustion load and a preset maximum combustion load;

[0044] a control module, configured to control the wall-hanging stove to run according to the target combustion load;

[0045] a third determination module, configured to, within a preset first running time, for each preset update period, determine a required combustion load according to a current return water temperature, a running water flow, the target return water temperature and the water flow constant, and perform the step of determining a target combustion load according to the required combustion load, a preset combustion load coefficient, a preset minimum combustion load and a preset maximum combustion load;

[0046] an updating module, configured to update the target combustion load according to a current return water temperature, the unit temperature required load, the target combustion load and a target return water temperature when the wall-mounted gas heater runs for the first running duration;

[0047] the control module is further configured to control the wall-mounted gas heater to stop running when a running duration of the wall-mounted gas heater reaches a preset second running duration.

[0048] As an optional implementation, the second obtaining module is specifically configured to:

[0049] In the pre-cleaning stage, the current outlet water temperature of the wall-mounted gas heater is determined as an initial water pipe temperature;

[0050] After the pre-cleaning stage ends, a preset minimum combustion load of the wall-mounted gas heater is determined as a target combustion load, the wall-mounted gas heater is controlled to run for a preset third running duration according to the target combustion load, and then a running water flow of the wall-mounted gas heater is determined according to the target combustion load, the initial water pipe temperature, a current outlet water temperature and a preset water flow constant;

[0051] The unit temperature required load is determined according to the running water flow and the water flow constant.

[0052] As an optional implementation, the combustion load coefficient includes a first combustion load coefficient and a second combustion load coefficient, and the second determining module is specifically configured to:

[0053] If a product of the first combustion load coefficient and the demand combustion load is less than the minimum combustion load, the minimum combustion load is determined as the target combustion load;

[0054] If the product of the first combustion load coefficient and the demand combustion load is greater than or equal to the minimum combustion load and the product of the first combustion load coefficient and the demand combustion load is less than or equal to the maximum combustion load, the product of the first combustion load coefficient and the demand combustion load is determined as the target combustion load;

[0055] If the product of the first combustion load coefficient and the demand combustion load is greater than the maximum combustion load, a product of the second combustion load coefficient and the maximum combustion load is determined as the target combustion load.

[0056] As an optional implementation, the updating module is specifically configured to:

[0057] When the current return water temperature is less than the target return water temperature, a sum of the target combustion load and the unit temperature required load is determined as an updated target combustion load when the current return water temperature increases by a unit temperature.

[0058] When the current return water temperature is equal to the target return water temperature, a difference between the target combustion load and a unit temperature required load is determined as an updated target combustion load for each unit temperature increase of the current return water temperature.

[0059] As an optional implementation, the control module is further configured to determine the current return water temperature as an initial water pipe temperature and perform the step of determining the required combustion load according to the target return water temperature input by the user, the initial water pipe temperature, a preset water flow constant, and the running water flow when the current return water temperature is less than or equal to a preset restart temperature threshold.

[0060] The application provides a control method of a wall-hanging stove. The embodiments of the application provide at least the following beneficial effects: the current outlet water temperature of an outlet pipe of the wall-hanging stove and the current return water temperature of a return pipe of the wall-hanging stove are obtained in real time. The initial water pipe temperature, the running water flow, and the unit temperature required load of the wall-hanging stove are obtained. The required combustion load is determined according to the target return water temperature input by the user, the initial water pipe temperature, a preset water flow constant, and the running water flow. The target combustion load is determined according to the required combustion load, a preset combustion load coefficient, a preset minimum combustion load, and a preset maximum combustion load. The wall-hanging stove is controlled to run according to the target combustion load. Within a preset first running duration, for each preset update period, the required combustion load is determined according to the current return water temperature, the running water flow, the target return water temperature, and the water flow constant, and the step of determining the target combustion load according to the required combustion load, the preset combustion load coefficient, the preset minimum combustion load, and the preset maximum combustion load is performed. When the wall-hanging stove runs for the first running duration, the target combustion load is updated according to the current return water temperature, the unit temperature required load, the target combustion load, and the target return water temperature. When the running duration of the wall-hanging stove reaches a preset second running duration, the wall-hanging stove is controlled to stop running. The application adopts a slow heating mode, the temperature of a room is fully dispersed by heating, heat balance is formed, and more heat is stored, which avoids frequent starting of the wall-hanging stove and makes the temperature in the room more stable. The combustion load is increased in a step-by-step manner until the output temperature set by the user is reached. Because the combustion load is adjusted slowly, temperature mutation is avoided, high-temperature water caused by temperature mutation is avoided, the problem of scale increase is avoided, and the service life of the wall-hanging stove is prolonged.

[0061] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0062] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to explain the present application and need not limit the present application.

[0063] Figure 1 A flow chart of a control method of a wall-hanging stove provided by an embodiment of the present application;

[0064] Figure 2 A flow chart of another control method of a wall-hanging stove provided by an embodiment of the present application;

[0065] Figure 3 A flow chart of a determination method of a target combustion load provided by an embodiment of the present application;

[0066] Figure 4 A flow chart of an updating method of a target combustion load provided by an embodiment of the present application;

[0067] Figure 5 A flow chart of an example of a control method of a wall-hanging stove provided by an embodiment of the present application;

[0068] Figure 6 A structural schematic diagram of a control device of a wall-hanging stove provided by an embodiment of the present application. DETAILED DESCRIPTION

[0069] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to explain the present application and need not limit the present application.

[0070] A control method of a wall-hanging stove provided by an embodiment of the present application will be described in detail below in combination with specific embodiments, Figure 1 A flow chart of a control method of a wall-hanging stove provided by an embodiment of the present application is shown in FIG. 1, and the specific steps are as follows: Figure 1

[0071] Step 101, the current outlet water temperature of an outlet water pipe of the wall-hanging stove and the current return water temperature of a return water pipe are acquired in real time.

[0072] ​In implementation, the heating principle of the wall-hanging stove is that cold water enters the wall-hanging stove, is heated, flows out from the water outlet pipe, enters the household heating pipeline, and flows back to the water return pipe from the household heating pipeline. The temperature sensor can be arranged at the water outlet pipe and the water return pipe respectively in the embodiment of the application to collect the current water outlet temperature and the current water return temperature in real time. The temperature sensor can also be arranged only at the water outlet pipe, and the current water return temperature can be calculated in real time according to the combustion load of the wall-hanging stove, the specific heat capacity of water, the thermal efficiency of the wall-hanging stove, the current water outlet temperature and the water flow (L / min) of the wall-hanging stove when the wall-hanging stove is running. The formula is: T in = T out -WK / Q. Wherein, T in is the current water return temperature, T out is the current water outlet temperature, W is the combustion load, K is the preset water flow constant, and Q is the water flow. Since the specific heat capacity of water and the thermal efficiency of the wall-hanging stove are known, the water flow constant K can be determined according to the specific heat capacity of water and the thermal efficiency of the wall-hanging stove.

[0073] Step 102, obtaining the initial water pipe temperature, the running water flow and the unit temperature required load of the wall-hanging stove.

[0074] In implementation, the wall-hanging stove controller can obtain the initial water pipe temperature, the running water flow and the unit temperature required load of the wall-hanging stove, for example, obtaining the initial water pipe temperature through the temperature sensor, obtaining the running water flow through the flow meter, and the unit temperature required load of the wall-hanging stove being pre-stored in the controller. The running water flow of the wall-hanging stove can also be determined through the combustion load, the initial water pipe temperature, the current water outlet temperature and the preset water flow constant, and the unit temperature required load is further determined.

[0075] Optionally, Figure 2 The flow chart of another control method of the wall-hanging stove provided by the embodiment of the application is shown in FIG. 2, and the specific steps of obtaining the initial water pipe temperature, the running water flow and the unit temperature required load of the wall-hanging stove in step 102 are as follows: Figure 2

[0076] Step 201, in the pre-cleaning stage, the current water outlet temperature of the wall-hanging stove is determined as the initial water pipe temperature.

[0077] In implementation, in the pre-cleaning stage (the gas in the wall-hanging stove is discharged through the fan of the wall-hanging stove), the wall-hanging stove does not heat, and the water temperature of the pipeline is equal everywhere (or the temperature difference is not large, and is approximately equal), so the current water outlet temperature of the wall-hanging stove can be determined as the initial water pipe temperature, and the current water return temperature is also equal to the initial water pipe temperature.

[0078] ​In step 202, after the pre-cleaning stage ends, the preset minimum combustion load of the wall-hanging stove is determined as a target combustion load, the wall-hanging stove is controlled to operate according to the target combustion load for a preset third operating time, and then the operating water flow of the wall-hanging stove is determined according to the target combustion load, the initial water pipe temperature, the current outlet water temperature, and a preset water flow constant.

[0079] In implementation, after the pre-cleaning stage ends, the wall-hanging stove can be combusted according to the minimum combustion load for a preset third operating time. After the third operating time, the temperature at the outlet water pipe is increased from the initial water pipe temperature to the current outlet water temperature, and according to the temperature change, the minimum combustion load, and the preset water flow constant, the operating water flow of the wall-hanging stove can be determined.

[0080] Optionally, the third operating time is preferably 10-100 seconds.

[0081] Optionally, in step 202, the formula for determining the operating water flow of the wall-hanging stove according to the target combustion load, the initial water pipe temperature, the current outlet water temperature, and the preset water flow constant is:

[0082] Q=W target K / (T out -T0);

[0083] Wherein, Q is the operating water flow, W target is the target combustion load, K is the preset water flow constant, T out is the current outlet water temperature, and T0 is the initial water pipe temperature.

[0084] In step 203, the load required per unit temperature is determined according to the operating water flow and the water flow constant.

[0085] In implementation, the wall-hanging stove controller can determine the load required per unit temperature according to the operating water flow and the water flow constant.

[0086] Optionally, in step 203, the formula for determining the load required per unit temperature according to the operating water flow and the water flow constant is:

[0087] ΔW=QΔT / K;

[0088] Wherein, ΔW is the load required per unit temperature, Q is the operating water flow, ΔT is the unit temperature, and K is the water flow constant.

[0089] In step 103, the required combustion load is determined according to the target return water temperature input by the user in advance, the initial water pipe temperature, the preset water flow constant, and the operating water flow.

[0090] In practice, the wall-hung boiler controller can determine the required combustion load based on the user's pre-input target return water temperature, initial water pipe temperature, water flow constant, and operating water flow rate. If combustion is carried out according to the required combustion load, the temperature can be heated from the initial water pipe temperature to the target return water temperature as quickly as possible.

[0091] Optionally, in step 103, the formula for determining the required combustion load based on the user-inputted target return water temperature, initial water pipe temperature, preset water flow constant, and operating water flow rate is as follows:

[0092] W in =Q(T) SET -T0) / K;

[0093] Among them, W in Where Q is the required combustion load, T is the operating water flow rate, and Q is the operating water flow rate. SET Let T0 be the target return water temperature, T0 be the initial water pipe temperature, and K be the water flow constant.

[0094] Step 104: Determine the target combustion load based on the required combustion load, the preset combustion load coefficient, the preset minimum combustion load, and the preset maximum combustion load.

[0095] In practice, while heating according to the required combustion load can quickly raise the temperature from the initial water pipe temperature to the target return water temperature, it has two drawbacks. First, rapid heating causes a sharp rise in the return water pipe temperature, which can easily lead to overheating and is difficult to control. Second, after heating to the target return water temperature, the boiler stops heating, and the temperature drops rapidly. To maintain the temperature, the boiler needs to be started frequently, which affects its service life. Therefore, the boiler controller determines the target combustion load based on the combustion load coefficient, required combustion load, minimum combustion load, and maximum combustion load.

[0096] Optionally, the combustion load factor includes a first combustion load factor and a second combustion load factor. Figure 3 A flowchart illustrating a method for determining a target combustion load provided in an embodiment of this application is shown below. Figure 3 As shown, the specific steps for determining the target combustion load in step 104 based on the required combustion load, the preset combustion load coefficient, the preset minimum combustion load, and the preset maximum combustion load are as follows:

[0097] Step 301: If the product of the first combustion load coefficient and the required combustion load is less than the minimum combustion load, then the minimum combustion load is determined as the target combustion load.

[0098] In implementation, combustion load factors can be set, such as a first combustion load factor of 0.5 and a second combustion load factor of 0.9. The wall-hung boiler controller determines the required combustion load W. inLater, 0.5W in whether it is less than the minimum combustion load of the wall-hanging stove, if yes, if combustion is carried out according to the combustion load of 0.5W in , the temperature rises too slowly, therefore, the minimum combustion load is determined as the target combustion load.

[0099] Step 302, if the product of the first combustion load coefficient and the demand combustion load is greater than or equal to the minimum combustion load, and the product of the first combustion load coefficient and the demand combustion load is less than or equal to the maximum combustion load, the product of the first combustion load coefficient and the demand combustion load is determined as the target combustion load.

[0100] In implementation, if the product of the first combustion load coefficient and the demand combustion load is greater than or equal to the minimum combustion load, and the product of the first combustion load coefficient and the demand combustion load is less than or equal to the maximum combustion load, the product of the first combustion load coefficient and the demand combustion load is determined as the target combustion load. If the first combustion load coefficient is set as 0.5, 0.5W in is greater than or equal to the minimum combustion load, and less than or equal to the maximum combustion load, 0.5W in is determined as the target combustion load.

[0101] Step 303, if the product of the first combustion load coefficient and the demand combustion load is greater than the maximum combustion load, the product of the second combustion load coefficient and the maximum combustion load is determined as the target combustion load.

[0102] In implementation, the first combustion load coefficient can be set as 0.5, and the second combustion load coefficient can be set as 0.9. If 0.5W in is greater than the maximum combustion load W max , 0.9W max is determined as the target combustion load.

[0103] Step 105, the wall-hanging stove is controlled to operate according to the target combustion load.

[0104] In implementation, the wall-hanging stove controller controls the wall-hanging stove to operate according to the target combustion load.

[0105] Step 106, within a preset first operating duration, for each preset update period, the demand combustion load is determined according to the current return water temperature, the operating water flow, the target return water temperature and the water flow constant, and step 104 is executed.

[0106] In implementation, the process of heating the return water temperature to the target return water temperature by the wall-hanging stove can be divided into two stages: a period adjustment stage and a fine adjustment stage. A first running duration is set. It can be understood that in the first running duration, the return water temperature is far from the target return water temperature, and the wall-hanging stove controller can adjust the target combustion load according to the period adjustment, and the adjustment range is large. When the return water temperature approaches the target return water temperature, in order to avoid over-temperature, the fine adjustment mode can be used to adjust the required combustion load, and then the target combustion load is adjusted according to step 104.

[0107] Optionally, the first running duration is preferably 1-10 minutes, and the update period is preferably 10-100 seconds.

[0108] Optionally, the formula for determining the required combustion load in step 106 according to the current return water temperature, the running water flow, the target return water temperature and the water flow constant is:

[0109] W in = Q(T SET -T in ) / K;

[0110] Wherein, W in is the required combustion load, Q is the running water flow, T SET is the target return water temperature, T in is the current return water temperature, and K is the water flow constant.

[0111] Step 107, after the wall-hanging stove runs for the first running duration, the target combustion load is updated according to the current return water temperature, the unit temperature required load, the target combustion load and the target return water temperature.

[0112] In implementation, after the wall-hanging stove runs for the first running duration, the wall-hanging stove controller updates the target combustion load according to the current return water temperature, the unit temperature required load, the target combustion load and the target return water temperature.

[0113] Optionally, Figure 4 is a flow chart of a target combustion load updating method provided by the embodiments of the present application, as shown in Figure 4 the specific steps of updating the target combustion load in step 107 according to the current return water temperature, the unit temperature required load, the target combustion load and the target return water temperature are as follows:

[0114] Step 401, when the current return water temperature is less than the target return water temperature, the sum of the target combustion load and the unit temperature required load is determined as the updated target combustion load when the current return water temperature increases by a unit temperature.

[0115] In implementation, when the current return water temperature is less than the target return water temperature, the target combustion load is determined as the updated target combustion load by adding the unit temperature required load to the target combustion load every time the current return water temperature increases by a unit temperature. For example, the unit temperature required load is ΔW, and the unit temperature is 1 degree Celsius. Then, every time the return water temperature increases by 1 degree Celsius, the target combustion load is increased by ΔW.

[0116] Step 402, when the current return water temperature is equal to the target return water temperature, the target combustion load is determined as the updated target combustion load by subtracting the unit temperature required load from the target combustion load every time the current return water temperature increases by a unit temperature.

[0117] In implementation, when the current return water temperature has reached the target return water temperature, if the current return water temperature is still increasing, the target combustion load is determined as the updated target combustion load by subtracting the unit temperature required load from the target combustion load every time the current return water temperature increases by a unit temperature. For example, the unit temperature required load is ΔW, and the unit temperature is 1 degree Celsius. Then, every time the return water temperature increases by 1 degree Celsius, the target combustion load is decreased by ΔW.

[0118] Step 108, when the running time of the wall-hanging stove reaches the preset second running time, the wall-hanging stove is controlled to stop running.

[0119] In implementation, when the running time of the wall-hanging stove reaches the preset second running time, the wall-hanging stove controller controls the wall-hanging stove to stop running.

[0120] Optionally, the second running time is preferably 60 minutes.

[0121] Optionally, after step 108, the method further comprises the following steps:

[0122] When the current return water temperature is less than or equal to the preset restart temperature threshold, the current return water temperature is determined as the initial water pipe temperature, and step 103 is performed.

[0123] In implementation, after the second running time, the wall-hanging stove stops running, and the heating temperature gradually cools down. The technician can preset a restart temperature threshold in the wall-hanging stove controller. When the wall-hanging stove detects that the current return water temperature is less than or equal to the preset restart temperature threshold, the current return water temperature is determined as the initial water pipe temperature, and step 103 is performed.

[0124] As an optional implementation, Figure 5 An example of a flowchart of a control method of a wall-hanging stove provided by the embodiment of the present application is shown in the following steps:

[0125] Step 501, the current outlet water temperature T out and the current return water temperature T in of the outlet water pipe of the wall-hanging stove are acquired in real time.

[0126] Step 502, the target return water temperature 60℃ input by the user is obtained, the first running time is 10 min, and the second running time is 1 h.

[0127] Step 503, running for 20 s according to the minimum combustion load, the running water flow Q and the load ΔW required per unit temperature are calculated.

[0128] Step 504, the required combustion load is calculated.

[0129] Step 505, the target combustion load is calculated.

[0130] Step 506, running according to the target combustion load.

[0131] Step 507, it is judged whether the first running time 10 min is reached.

[0132] If not, step 508 is executed, and if yes, step 509 is executed.

[0133] Step 508, the required combustion load is calculated every preset interval 20 s, and step 505 is executed.

[0134] Step 509, the target combustion load is increased by ΔW every time the current return water temperature is increased by 1 degree.

[0135] Step 510, it is judged whether the target return water temperature is reached.

[0136] If not, step 509 is executed, and if yes, step 512 is executed.

[0137] Step 511, the target combustion load is reduced by ΔW every time the current return water temperature is increased by 1 degree.

[0138] Step 512, it is judged whether the second running time 1 h is reached.

[0139] If yes, step 513 is executed, and if not, step 511 is executed.

[0140] Step 513, the running is stopped.

[0141] Step 514, it is judged whether the current return water temperature is less than or equal to the preset restart temperature threshold.

[0142] If yes, step 504 is executed, and if not, step 514 is executed.

[0143] The embodiment of the application provides a control method of a wall-hanging stove, and the embodiment of the application provides the technical scheme, which at least brings the following beneficial effects: the current outlet water temperature of the outlet pipe of the wall-hanging stove and the current return water temperature of the return pipe are acquired in real time. The initial water pipe temperature, the running water flow and the required load per unit temperature of the wall-hanging stove are acquired. The required combustion load is determined according to the target return water temperature, the initial water pipe temperature, the preset water flow constant and the running water flow input by the user in advance. The target combustion load is determined according to the required combustion load, the preset combustion load coefficient, the preset minimum combustion load and the preset maximum combustion load. The wall-hanging stove is controlled to run according to the target combustion load. In the preset first running duration, for each preset update period, the required combustion load is determined according to the current return water temperature, the running water flow, the target return water temperature and the water flow constant, and the step of determining the target combustion load according to the required combustion load, the preset combustion load coefficient, the preset minimum combustion load and the preset maximum combustion load is performed. When the wall-hanging stove runs for the first running duration, the target combustion load is updated according to the current return water temperature, the required load per unit temperature, the target combustion load and the target return water temperature. When the running duration of the wall-hanging stove reaches the preset second running duration, the wall-hanging stove is controlled to stop running. The application adopts the slow heating mode, the temperature of the room is fully dispersed by heating, heat balance is formed, and more heat is stored, so that the frequent starting of the wall-hanging stove is avoided, and the temperature in the room is more stable. The combustion load is increased in a step-by-step manner until the temperature set by the user is output. Because the combustion load is slowly adjusted, temperature mutation is not caused, high-temperature water is not generated due to temperature mutation, the problem of scale increase is avoided, and the service life of the wall-hanging stove product is prolonged.

[0144] It should be understood that although Figures 1 to 5 The steps in the flowchart of the method are displayed in sequence according to the arrows, but the steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, the execution of the steps is not strictly limited in sequence, and the steps can be executed in other orders. Moreover, Figures 1 to 5 At least part of the steps in the method can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of the steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0145] It can be understood that the same / similar parts of each embodiment of the method in the specification can be mutually referred to, and each embodiment mainly explains the differences from other embodiments, and the related parts can be referred to the description of other method embodiments.

[0146] The embodiment of the application further provides a control device of a wall-hanging stove, such as Figure 6As shown, the device comprises:

[0147] The first acquisition module 610 is configured to acquire the current outlet water temperature of the outlet pipe of the wall-hanging stove and the current return water temperature of the return pipe in real time.

[0148] The second acquisition module 620 is configured to acquire the initial water pipe temperature, the running water flow and the load required per unit temperature of the wall-hanging stove.

[0149] The first determination module 630 is configured to determine the required combustion load according to the target return water temperature, the initial water pipe temperature, the preset water flow constant and the running water flow input by the user in advance.

[0150] The second determination module 640 is configured to determine the target combustion load according to the required combustion load, the preset combustion load coefficient, the preset minimum combustion load and the preset maximum combustion load.

[0151] The control module 650 is configured to control the wall-hanging stove to run according to the target combustion load.

[0152] The third determination module 660 is configured to, within the preset first running duration, for each preset update period, determine the required combustion load according to the current return water temperature, the running water flow, the target return water temperature and the water flow constant, and perform the step of determining the target combustion load according to the required combustion load, the preset combustion load coefficient, the preset minimum combustion load and the preset maximum combustion load.

[0153] The update module 670 is configured to, when the wall-hanging stove runs for the first running duration, update the target combustion load according to the current return water temperature, the load required per unit temperature, the target combustion load and the target return water temperature.

[0154] The control module 650 is further configured to, when the running duration of the wall-hanging stove reaches the preset second running duration, control the wall-hanging stove to stop running.

[0155] As an optional implementation, the second acquisition module 620 is specifically configured to:

[0156] In the front cleaning stage, the current outlet water temperature of the wall-hanging stove is determined as the initial water pipe temperature.

[0157] After the front cleaning stage ends, the preset minimum combustion load of the wall-hanging stove is determined as the target combustion load, the wall-hanging stove is controlled to run according to the target combustion load for a preset third running duration, and then the running water flow of the wall-hanging stove is determined according to the target combustion load, the initial water pipe temperature, the current outlet water temperature and the preset water flow constant.

[0158] The load required per unit temperature is determined according to the running water flow and the water flow constant.

[0159] As an optional implementation, the combustion load coefficient comprises a first combustion load coefficient and a second combustion load coefficient, the second determining module 640 is specifically used for:

[0160] If the product of the first combustion load coefficient and the required combustion load is less than the minimum combustion load, the minimum combustion load is determined as the target combustion load;

[0161] If the product of the first combustion load coefficient and the required combustion load is greater than or equal to the minimum combustion load, and the product of the first combustion load coefficient and the required combustion load is less than or equal to the maximum combustion load, the product of the first combustion load coefficient and the required combustion load is determined as the target combustion load;

[0162] If the product of the first combustion load coefficient and the required combustion load is greater than the maximum combustion load, the product of the second combustion load coefficient and the maximum combustion load is determined as the target combustion load.

[0163] As an optional implementation, the updating module 670 is specifically used for:

[0164] When the current return water temperature is less than the target return water temperature, for each unit temperature increase of the current return water temperature, the sum of the target combustion load and the required load of the unit temperature is determined as the updated target combustion load;

[0165] When the current return water temperature is equal to the target return water temperature, for each unit temperature increase of the current return water temperature, the difference between the target combustion load and the required load of the unit temperature is determined as the updated target combustion load.

[0166] As an optional implementation, the control module 650 is further used for determining the current return water temperature as the initial water pipe temperature when the current return water temperature is less than or equal to a preset restart temperature threshold, and performing the step of determining the required combustion load according to the target return water temperature, the initial water pipe temperature, the preset water flow constant, and the running water flow which are input by the user in advance.

[0167] The embodiment of the present application provides a control device of a wall-hanging stove, which comprises: a first acquisition module 610, which is used for acquiring a current outlet water temperature of an outlet water pipe of the wall-hanging stove and a current return water temperature of a return water pipe in real time; a second acquisition module 620, which is used for acquiring an initial water pipe temperature, a running water flow and a required load per unit temperature of the wall-hanging stove; a first determination module 630, which is used for determining a required combustion load according to a target return water temperature, the initial water pipe temperature, a preset water flow constant and the running water flow which are input by a user in advance; a second determination module 640, which is used for determining a target combustion load according to the required combustion load, a preset combustion load coefficient, a preset minimum combustion load and a preset maximum combustion load; a control module 650, which is used for controlling the wall-hanging stove to run according to the target combustion load; a third determination module 660, which is used for determining the required combustion load according to the current return water temperature, the running water flow, the target return water temperature and the water flow constant for each preset update period within a preset first running time length, and performing the step of determining the target combustion load according to the required combustion load, the preset combustion load coefficient, the preset minimum combustion load and the preset maximum combustion load; and an update module 670, which is used for updating the target combustion load according to the current return water temperature, the required load per unit temperature, the target combustion load and the target return water temperature when the wall-hanging stove runs for the first running time length. The control module 650 is further used for controlling the wall-hanging stove to stop running when a running time length of the wall-hanging stove reaches a preset second running time length. The present application adopts a slow heating mode, the temperature of a room is fully dispersed by heating, heat balance is formed, heat storage is more, frequent starting of the wall-hanging stove is avoided, and the temperature in the room is more stable. The combustion load is increased in a step-by-step mode until the temperature set by the user is output. Because the combustion load is slowly adjusted, temperature mutation is not caused, high-temperature water caused by temperature mutation is avoided, the problem of increasing scale is avoided, and the service life of the wall-hanging stove product is prolonged.

[0168] The specific limitation of the control device of the wall-hanging stove can be referred to the limitation of the control method of the wall-hanging stove in the above, which will not be described herein again. The modules in the control device of the wall-hanging stove can be realized by software, hardware and a combination thereof in whole or in part. The modules can be embedded in or independent of a processor in a computer device in a hardware form, or can be stored in a memory in a computer device in a software form, so that the processor calls and executes the operations corresponding to the modules.

[0169] It should be pointed out that, in this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0170] It should also be pointed out that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for display, analyzed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties.

[0171] Each embodiment in the specification is described in a relevant manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment focuses on the difference from other embodiments. In particular, for system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the description of the method embodiment.

[0172] The technical features of the above embodiments can be combined in any way, and in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description.

[0173] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A control method for a wall-hung boiler, characterized in that, The method includes: The current outlet water temperature and the current return water temperature of the wall-hung boiler are obtained in real time. Obtain the initial water pipe temperature, operating water flow rate, and load required per unit temperature of the wall-hung boiler; The required combustion load is determined based on the target return water temperature, the initial water pipe temperature, the preset water flow constant, and the operating water flow rate input by the user. The target combustion load is determined based on the required combustion load, the preset combustion load coefficient, the preset minimum combustion load, and the preset maximum combustion load. Control the wall-hung boiler to operate according to the target combustion load; Within a preset first running time, for each preset update cycle, the required combustion load is determined based on the current return water temperature, the operating water flow rate, the target return water temperature, and the water flow constant, and the step of determining the target combustion load based on the required combustion load, the preset combustion load coefficient, the preset minimum combustion load, and the preset maximum combustion load is executed. After the wall-hung boiler has been running for the first running time, the target combustion load is updated based on the current return water temperature, the load required per unit temperature, the target combustion load, and the target return water temperature. When the operating time of the wall-hung boiler reaches the preset second operating time, the wall-hung boiler is controlled to stop operating; The process of obtaining the initial water pipe temperature, operating water flow rate, and load required per unit temperature of the wall-hung boiler includes: During the pre-cleaning stage, the current outlet water temperature of the wall-hung boiler is determined as the initial water pipe temperature; After the pre-cleaning stage is completed, the preset minimum combustion load of the wall-hung boiler is determined as the target combustion load, and the wall-hung boiler is controlled to run for a preset third running time according to the target combustion load. Then, the operating water flow rate of the wall-hung boiler is determined according to the target combustion load, the initial water pipe temperature, the current outlet water temperature and the preset water flow constant. The required load per unit temperature is determined based on the operating water flow rate and the water flow constant.

2. The method according to claim 1, characterized in that, The formula for determining the operating water flow rate of the wall-hung boiler based on the target combustion load, the initial water pipe temperature, the current outlet water temperature, and the preset water flow constant is as follows: Q=W target K / (T out -T0); Where Q is the operating water flow rate, and W target The target combustion load is K, the preset water flow constant is T. out T0 is the current outlet water temperature, and T0 is the initial water pipe temperature.

3. The method according to claim 1, characterized in that, The formula for determining the load required per unit temperature based on the operating water flow rate and the water flow constant is as follows: ； in, Where Q is the load required per unit temperature, and Q is the operating water flow rate. Here, K represents the unit temperature, and K is the water flow constant.

4. The method according to claim 1, characterized in that, The formula for determining the required combustion load based on the user-inputted target return water temperature, the initial water pipe temperature, the preset water flow constant, and the operating water flow rate is as follows: W in =Q(T SET -T0) / K; Among them, W in Where Q is the required combustion load, T is the operating water flow rate, and Q is the operating water flow rate. SET Let T0 be the target return water temperature, T0 be the initial water pipe temperature, and K be the water flow constant.

5. The method according to claim 1, characterized in that, The combustion load factor includes a first combustion load factor and a second combustion load factor. Determining the target combustion load based on the required combustion load, the preset combustion load factor, the preset minimum combustion load, and the preset maximum combustion load includes: If the product of the first combustion load factor and the required combustion load is less than the minimum combustion load, then the minimum combustion load is determined as the target combustion load; If the product of the first combustion load factor and the required combustion load is greater than or equal to the minimum combustion load, and the product of the first combustion load factor and the required combustion load is less than or equal to the maximum combustion load, then the product of the first combustion load factor and the required combustion load is determined as the target combustion load. If the product of the first combustion load factor and the required combustion load is greater than the maximum combustion load, then the product of the second combustion load factor and the maximum combustion load is determined as the target combustion load.

6. The method according to claim 1, characterized in that, The formula for determining the required combustion load based on the current return water temperature, the operating water flow rate, the target return water temperature, and the water flow constant is as follows: W in =Q(T SET -T in ) / (2K); Among them, W in Where Q is the required combustion load, T is the operating water flow rate, and Q is the operating water flow rate. SET For the target return water temperature, T in Where is the current return water temperature, and K is the water flow rate constant.

7. The method according to claim 1, characterized in that, The step of updating the target combustion load based on the current return water temperature, the load required per unit temperature, the target combustion load, and the target return water temperature includes: When the current return water temperature is less than the target return water temperature, for every unit increase in the current return water temperature, the sum of the target combustion load and the load required at the unit temperature is determined as the updated target combustion load. When the current return water temperature is equal to the target return water temperature, for every unit increase in the current return water temperature, the difference between the target combustion load and the load required at the unit temperature is determined as the updated target combustion load.

8. The method according to claim 1, characterized in that, After the wall-hung boiler is stopped from operating, the method further includes: When the current return water temperature is less than or equal to the preset restart temperature threshold, the current return water temperature is determined as the initial water pipe temperature, and the step of determining the required combustion load based on the user-inputted target return water temperature, the initial water pipe temperature, the preset water flow constant, and the operating water flow is executed.

9. A control device for a wall-hung boiler, characterized in that, The device includes: The first acquisition module is used to acquire the current outlet water temperature and the current return water temperature of the wall-hung boiler in real time. The second acquisition module is used to acquire the initial water pipe temperature, operating water flow rate, and load required per unit temperature of the wall-hung boiler. The first determining module is used to determine the required combustion load based on the target return water temperature, the initial water pipe temperature, the preset water flow constant, and the operating water flow rate input by the user. The second determining module is used to determine the target combustion load based on the required combustion load, the preset combustion load coefficient, the preset minimum combustion load, and the preset maximum combustion load; The control module is used to control the wall-hung boiler to operate according to the target combustion load; The third determining module is used to determine the required combustion load for each preset update cycle within a preset first running time, based on the current return water temperature, the operating water flow rate, the target return water temperature, and the water flow constant, and to execute the step of determining the target combustion load based on the required combustion load, a preset combustion load coefficient, a preset minimum combustion load, and a preset maximum combustion load. The update module is used to update the target combustion load based on the current return water temperature, the load required per unit temperature, the target combustion load, and the target return water temperature after the wall-hung boiler has been running for the first running time. The control module is also used to control the wall-hung boiler to stop operating when the operating time of the wall-hung boiler reaches a preset second operating time; The second acquisition module is specifically used to determine the current outlet water temperature of the wall-hung boiler as the initial water pipe temperature during the pre-cleaning stage; After the pre-cleaning stage is completed, the preset minimum combustion load of the wall-hung boiler is determined as the target combustion load, and the wall-hung boiler is controlled to run for a preset third running time according to the target combustion load. Then, the operating water flow rate of the wall-hung boiler is determined according to the target combustion load, the initial water pipe temperature, the current outlet water temperature and the preset water flow constant. The required load per unit temperature is determined based on the operating water flow rate and the water flow constant.

Images