Wall-hanging stove control method and wall-hanging stove

Abstract

The invention relates to the technical field of water heating, and particularly discloses a wall-hanging stove control method and a wall-hanging stove. The wall-hanging stove is provided with a heat exchange device; the heating waterway is used for heating, the domestic waterway is used for heating domestic water, and the heating waterway and the domestic waterway are both communicated with the heat exchange device; the heating device is used for heating the heating water in the heating waterway; the two ends of the communicating water way communicate with the living water way correspondingly, and the communicating water way is connected with the heat exchange device in parallel; the flow adjusting device is used for adjusting the flow entering the communicating waterway and / or the heat exchange device; the method comprises the steps that under the condition that the current needed load and the minimum load meet a first preset condition, a flow adjusting device is controlled to adjust the flow flowing into a communicating waterway and / or a heat exchange device; controlling the heating device to stop heating under the condition that a second preset condition is met; and controlling the heating device to start heating under the condition that a third preset condition is met. According to the method, overtemperature can be avoided, and the constant-temperature adjusting capacity of the wall-hanging stove is improved.

Description

Technical Field

[0001] This specification relates to the technical field of water heating, and particularly relates to a control method and a wall-mounted boiler for a wall-mounted boiler. Background Art

[0002] The gas wall-mounted boiler has the functions of providing heating hot water and domestic hot water. However, due to the large minimum load of the wall-mounted boiler, the outlet temperature of the domestic hot water often exceeds the set temperature, resulting in a poor user water use experience.

[0003] In response to the above problems, no effective solution has been proposed yet. Summary of the Invention

[0004] The embodiments of this specification provide a control method and a wall-mounted boiler for a wall-mounted boiler to improve the user water use experience of the wall-mounted boiler.

[0005] The embodiments of this specification provide a control method for a wall-mounted boiler. The wall-mounted boiler has: a heat exchange device; a heating water circuit for heating and a domestic water circuit for heating domestic water. Both the heating water circuit and the domestic water circuit are communicated with the heat exchange device; a heating device for heating the heating water in the heating water circuit; a connecting water circuit, both ends of the connecting water circuit are respectively communicated with the domestic water circuit and the connecting water circuit is connected in parallel with the heat exchange device; a flow regulating device for regulating the flow of water in the domestic water circuit into the connecting water circuit and / or the heat exchange device;

[0006] Wherein, the control method includes:

[0007] When the first preset condition is satisfied between the current required load and the minimum load, control the flow regulating device to regulate the flow of water flowing into the connecting water circuit and / or the heat exchange device;

[0008] When the second preset condition is satisfied, control the heating device to stop heating;

[0009] When the third preset condition is satisfied, control the heating device to start heating.

[0010] In one embodiment, the first preset condition includes one of the following:

[0011] The current required load is less than the minimum load;

[0012] The difference between the minimum load and the current required load is greater than a preset load value; wherein, the preset load value is greater than zero.

[0013] In one embodiment, the method further includes:

[0014] When receiving the water usage signal of the user, obtain the inlet water temperature, set temperature, and inlet water flow rate at the current moment;

[0015] Based on the inlet water temperature, set temperature, and inlet water flow rate at the current moment, determine the current required load.

[0016] In one embodiment, controlling the flow regulating device to regulate the flow rate of water flowing into the communicating waterway and / or the heat exchange device includes:

[0017] According to the difference between the minimum load and the current required load, control the flow regulating device to regulate the flow rate of water flowing into the communicating waterway.

[0018] In one embodiment, controlling the flow regulating device to regulate the flow rate of water flowing into the communicating waterway and / or the heat exchange device includes:

[0019] Control the flow regulating device to gradually increase the flow rate of water flowing into the communicating waterway until the difference between the outlet water temperature of the domestic waterway and the set temperature is within a preset range or until the flow rate of water flowing into the communicating waterway is adjusted to the maximum.

[0020] In one embodiment, when the second preset condition is satisfied, controlling the heating device to stop heating includes:

[0021] Obtain the set temperature and the outlet water temperature; the outlet water temperature is the domestic water temperature at the outlet of the domestic waterway at the current moment;

[0022] Judge whether the second preset condition is satisfied between the outlet water temperature and the set temperature;

[0023] If so, control the heating device to stop heating.

[0024] In one embodiment, the second preset condition includes one of the following:

[0025] The outlet water temperature is greater than the set temperature;

[0026] The difference between the outlet water temperature and the set temperature is greater than the preset temperature difference; the preset temperature difference is greater than zero.

[0027] In one embodiment, controlling the heating device to stop heating includes:

[0028] According to the difference between the outlet water temperature and the set temperature, determine the first preset time period;

[0029] Control the heating device to stop heating for the first preset time period.

[0030] In one embodiment, the third preset condition includes:

[0031] The duration for which the heating device stops heating reaches the first preset time period.

[0032] In one embodiment, when the third preset condition is satisfied, controlling the heating device to turn on heating includes:

[0033] Obtaining the set temperature and the outlet water temperature; the outlet water temperature is the temperature of the domestic water at the outlet of the domestic water circuit at the current moment;

[0034] Judging whether the third preset condition is satisfied between the outlet water temperature and the set temperature;

[0035] If so, controlling the heating device to turn on heating.

[0036] In one embodiment, the third preset condition includes:

[0037] The outlet water temperature is lower than the set temperature;

[0038] The difference between the set temperature and the outlet water temperature is greater than a preset temperature difference; the preset temperature difference is greater than zero.

[0039] In one embodiment, the method further includes:

[0040] When the current required load is greater than the minimum load, controlling the heating device to heat with the current required load;

[0041] When the current required load is less than or equal to the minimum load, controlling the heating device to heat with the minimum load.

[0042] An embodiment of the present specification further provides a wall-mounted boiler, including:

[0043] A heat exchange device;

[0044] A heating water circuit for heating and a domestic water circuit for heating domestic water, the heating water circuit and the domestic water circuit are both connected to the heat exchange device;

[0045] A heating device for heating the heating water in the heating water circuit;

[0046] A connecting water circuit, both ends of the connecting water circuit are respectively connected to the domestic water circuit and the connecting water circuit is in parallel with the heat exchange device;

[0047] A flow regulating device for regulating the flow of water in the domestic water circuit into the connecting water circuit and / or the heat exchange device;

[0048] A controller, which is configured to control the flow regulating device to adjust the flow rate of water flowing into the communication waterway and / or the heat exchange device when a first preset condition is satisfied between the current required load and the minimum load; is further configured to control the heating device to stop heating when a second preset condition is satisfied; and is further configured to control the heating device to start heating when a third preset condition is satisfied.

[0049] In one embodiment, the wall-mounted boiler further includes:

[0050] A softening device, which is configured to soften the water flowing through the softening device;

[0051] A first connecting pipe, which is configured to connect the water source to the inlet of the softening device;

[0052] A second connecting pipe, which is configured to connect the outlet of the softening device to the domestic waterway, so that the water softened by the softening device flows into the heating device and / or the communication waterway through the domestic waterway.

[0053] In one embodiment, the outlet of the softening device is further connected to a water-using device for supplying softened water to the water-using device.

[0054] In one embodiment, the wall-mounted boiler further includes:

[0055] A third connecting pipe, which is configured to connect the first connecting pipe to the domestic waterway;

[0056] A first valve, which is arranged on the first connecting pipe;

[0057] A second valve, which is arranged on the third connecting pipe;

[0058] The wall-mounted boiler has a softening working state and a non-softening working state; in the softening working state, the first valve is turned on and the second valve is turned off; in the non-softening working state, the first valve is turned off and the second valve is turned on.

[0059] In one embodiment, the domestic waterway includes an inlet pipe and an outlet pipe, and the domestic water in the domestic waterway flows into the heat exchange device from the inlet pipe and then flows out of the heat exchange device to the outlet pipe;

[0060] The flow regulating device includes a variable-frequency water pump;

[0061] The variable-frequency water pump is arranged on the outlet pipe and is located upstream of the connection between the communication waterway and the outlet pipe along the water flow direction; or,

[0062] The variable-frequency water pump is arranged on the water inlet pipe and is located downstream of the connection between the communication water path and the water inlet pipe along the water flow direction.

[0063] In one embodiment, the domestic water path includes a water inlet pipe and a water outlet pipe. The domestic water in the domestic water path flows into the heat exchange device from the water inlet pipe and then flows out of the heat exchange device to the water outlet pipe.

[0064] The flow rate regulating device includes a switching valve; the switching valve is arranged on the communication water path. When the first preset condition is met between the current required load and the minimum load, the switching valve is turned on to allow the water in the communication water path to flow; or, the switching valve is arranged on the water outlet pipe and is located upstream of the connection between the communication water path and the water outlet pipe along the water flow direction. When the first preset condition is met between the current required load and the minimum load, the opening degree of the switching valve is reduced to reduce the flow rate of the water flowing into the heat exchange device; or, the switching valve is arranged on the water inlet pipe and is located downstream of the connection between the communication water path and the water inlet pipe along the water flow direction. When the first preset condition is met between the current required load and the minimum load, the opening degree of the switching valve is reduced to reduce the flow rate of the water flowing into the heat exchange device; or,

[0065] The flow rate regulating device includes a three-way valve; the three-way valve is arranged at the connection between the water outlet pipe and the communication water path. When the first preset condition is met between the current required load and the minimum load, the three-way valve connects the water outlet pipe and the communication water path; or, the three-way valve is arranged at the connection between the water inlet pipe and the communication water path. When the first preset condition is met between the current required load and the minimum load, the three-way valve connects the water inlet pipe and the communication water path.

[0066] In one embodiment, the flow rate regulating device includes a switching valve; the switching valve is arranged on the communication water path;

[0067] When the second preset condition is met, the switching valve is turned on to allow the water in the communication water path to flow;

[0068] When the third preset condition is met, the switching valve is turned off to prevent the water in the communication water path from flowing.

[0069] In one embodiment, the switching valve is a solenoid valve; the controller is electrically connected to the solenoid valve and is used to control the opening degree of the solenoid valve.

[0070] In one embodiment, the flow rate regulating device includes a three-way valve; the three-way valve is arranged at the connection between the water outlet pipe and the communication water path;

[0071] When the second preset condition is satisfied, the three-way valve connects the water outlet pipe to the communication waterway;

[0072] When the third preset condition is satisfied, the three-way valve isolates the water outlet pipe from the communication waterway.

[0073] In one embodiment, the flow rate regulating device includes a three-way valve; the three-way valve is arranged at the connection of the water inlet pipe and the communication waterway;

[0074] When the second preset condition is satisfied, the three-way valve connects the water inlet pipe to the communication waterway;

[0075] When the third preset condition is satisfied, the three-way valve isolates the water inlet pipe from the communication waterway.

[0076] In one embodiment, the flow rate regulating device includes a three-way valve; the three-way valve includes a first interface and a second interface connected to the water outlet pipe, and a third interface connected to the communication waterway; the first interface is located upstream of the second interface;

[0077] When the first preset condition is satisfied between the currently required load and the minimum load, the second interface is connected to the third interface.

[0078] In one embodiment, the flow rate regulating device includes a three-way valve; the three-way valve includes a first interface and a second interface connected to the water inlet pipe, and a third interface connected to the communication waterway; the first interface is located upstream of the second interface;

[0079] When the first preset condition is satisfied between the currently required load and the minimum load, the first interface is connected to the third interface.

[0080] In one embodiment, the three-way valve is a flow rate adjustable three-way valve.

[0081] In one embodiment, the domestic waterway includes a water inlet pipe and a water outlet pipe, and the domestic water in the domestic waterway flows into the heat exchange device from the water inlet pipe and then flows out of the heat exchange device to the water outlet pipe; one end of the second connecting pipe is connected to the outlet of the water softening device, and the other end of the second connecting pipe is connected to the connection of the water inlet pipe and the communication waterway;

[0082] The flow rate regulating device includes a four-way valve, and the four-way valve is arranged at the connection of the water inlet pipe and the communication waterway;

[0083] When the first preset condition is satisfied between the currently required load and the minimum load, the four-way valve connects the communication waterway to the water inlet pipe.

[0084] In one embodiment, when the second preset condition is satisfied, the four-way valve connects the water inlet pipe to the communication water path;

[0085] When the third preset condition is satisfied, the four-way valve isolates the water inlet pipe from the communication water path.

[0086] In one embodiment, the four-way valve includes a first interface and a second interface connected to the water outlet pipe, a third interface connected to the communication water path, and a fourth interface connected to the other end of the second communication pipe; the first interface is located upstream of the second interface;

[0087] When a first preset condition is satisfied between the currently required load and the minimum load, the first interface is connected to the third interface.

[0088] In one embodiment, the four-way valve is a flow-adjustable four-way valve.

[0089] An embodiment of this specification also provides a computer device, including a processor and a memory for storing processor-executable instructions. When the processor executes the instructions, the steps of the control method of the wall-mounted boiler described in any of the above embodiments are implemented.

[0090] An embodiment of this specification also provides a computer-readable storage medium, on which computer instructions are stored. When the instructions are executed, the steps of the control method of the wall-mounted boiler described in any of the above embodiments are implemented.

[0091] The technical solution of this specification has the following remarkable beneficial effects:

[0092] Through the control method of the wall-mounted boiler in this application, considering that the minimum load of the wall-mounted boiler is usually large, when the user uses water each time, if the first preset condition is met between the currently required load and the minimum load, the flow regulating device can be controlled to adjust the flow of the water in the domestic water circuit flowing into the heat exchange device and / or the water in the connecting water circuit. Since both ends of the connecting pipe are connected to the domestic water and are in parallel with the heat exchange device, the flow of the cold water used for mixing with the hot water flowing out of the heat exchange device in the connecting pipe can be adjusted, or the flow of the hot water in the heat exchange device mixed with the cold water flowing out of the connecting pipe can be adjusted, so that the outlet temperature of the domestic water circuit can be adjusted to avoid over-temperature phenomena. Further, after controlling the flow regulating device to adjust the flow of the water in the domestic water circuit flowing into the heat exchange device and / or the water in the connecting water circuit, if the second condition is met, the heating device of the wall-mounted boiler can be controlled to stop heating the heating water in the heating water circuit of the wall-mounted boiler, which can further avoid over-temperature phenomena. Furthermore, after controlling the heating device to stop working, if the third condition is met, the heating device can be controlled to start heating, which can avoid the outlet temperature from being too low. Through this solution, the constant temperature regulation ability of the wall-mounted boiler can be improved, and the situation of too high or too low outlet temperature can be avoided. Therefore, temperature fluctuations can be reduced or avoided, the constant temperature effect of the water heater can be improved, and the user's water use experience can be improved.

[0093] Reference is made to the following description and the drawings, which disclose in detail specific embodiments of the invention and indicate the ways in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not limited in scope thereby. Features described and / or illustrated with respect to one embodiment may be used in the same or similar way in one or more other embodiments, combined with the features in the other embodiments, or substituted for the features in the other embodiments.

[0094] It should be emphasized that the term "comprising / including" as used herein refers to the presence of features, components, steps or assemblies, but does not exclude the presence or addition of one or more other features, components, steps or assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure of the invention in any way. Additionally, the shapes and proportional dimensions of the components in the figures are merely schematic and are used to assist in the understanding of the invention, rather than specifically limiting the shapes and proportional dimensions of the components of the invention. Those skilled in the art can, under the teaching of the invention, select various possible shapes and proportional dimensions according to specific circumstances to implement the invention. In the drawings:

[0096] Figure 1 shows a schematic structural diagram of a wall-mounted boiler in an embodiment of this specification;

[0097] Figure 2Shows the flowchart of the control method of the wall-mounted boiler in an embodiment of this specification;

[0098] Figure 3 Shows the flowchart of the control method of the wall-mounted boiler in an embodiment of this specification;

[0099] Figure 4 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0100] Figure 5 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0101] Figure 6 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0102] Figure 7 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0103] Figure 8 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0104] Figure 9 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0105] Figure 10 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0106] Figure 11 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0107] Figure 12 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification;

[0108] Figure 13 Shows the schematic structural diagram of the wall-mounted boiler in an embodiment of this specification.

[0109] Reference numerals of the above drawings:

[0110] 100, main heat exchanger; 101, heat exchange device; 102, heating water circuit; 103, domestic water circuit; 104, heating device; 105, connecting water circuit; 106, flow regulating device; 107, softening device; 108, first connecting pipe; 109, second connecting pipe; 110, third connecting pipe; 111, first valve; 112, second valve; 1031, water inlet pipe; 1032, water outlet pipe. Detailed implementation manners

[0111] The principles and spirit of this specification will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided only to enable those skilled in the art to better understand and then implement this specification, rather than limiting the scope of this specification in any way. On the contrary, these embodiments are provided to make the disclosure of this specification more thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art.

[0112] Those skilled in the art know that the embodiments of this specification can be implemented as a system, device, equipment, method, or computer program product. Therefore, the disclosure of this specification can be specifically implemented in the following forms, namely: complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0113] Combined with the description of the accompanying drawings and the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only for the purpose of explaining the present invention and cannot be understood in any way as a limitation of the present invention. Under the teaching of the present invention, those skilled in the art can conceive any possible variations based on the present invention, and these should all be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0114] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art belonging to the technical field of this specification. The terms used herein in this specification are only for the purpose of describing specific embodiments and are not intended to limit this specification. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0115] The embodiments of this specification provide a control method for a wall-mounted boiler. Figure 1 The structural schematic diagram of a wall-mounted boiler in an embodiment of this specification is shown. As Figure 1As shown in the figure, the wall-mounted boiler may include: a heat exchange device 101, a heating water circuit 102, a domestic water circuit 103, a heating device 104, a connecting water circuit 105, and a flow regulating device 106. Heating water for heating circulates in the heating water circuit 102. Domestic water circulates in the domestic water circuit 103. Both the heating water circuit 102 and the domestic water circuit 103 are connected to the heat exchange device 101. The heat exchange device 101 is used for heat exchange between domestic water and heating water. The heating device 104 is used to heat the heating water in the heating water circuit 102. Both ends of the connecting water circuit 105 are respectively connected to the domestic water circuit 103, and the connecting water circuit 105 is in parallel with the heat exchange device 101. The flow regulating device 106 is used to regulate the flow rate of water in the domestic water circuit 103 entering the connecting water circuit 105 and / or the heat exchange device 101.

[0116] As Figure 1 shown in the figure, in some embodiments of this specification, the wall-mounted boiler may further include a main heat exchanger (MHE) 100. The heating water circuit 102 may also be connected to the main heat exchanger 100, and the heating device 104 heats the heating water flowing from the heating water circuit 102 into the main heat exchanger 100 through the main heat exchanger 100.

[0117] It can be understood that the wall-mounted boiler may also have a controller. As the execution entity, the controller can execute the control method of the wall-mounted boiler provided in the embodiments of this specification.

[0118] Figure 2 The figure shows a flowchart of the control method of the wall-mounted boiler in an embodiment of this specification. Although this specification provides method operation steps or device structures as shown in the following embodiments or figures, based on routine or non-creative labor, more or fewer operation steps or module units may be included in the method or device. In steps or structures where there is no necessary causal relationship logically, the execution order of these steps or the module structure of the device is not limited to the execution order or module structure described in the embodiments of this specification and shown in the figures. When the method or module structure is applied to an actual device or terminal product, it can be executed sequentially or in parallel according to the method or module structure connection shown in the embodiments or figures (for example, in an environment of parallel processors or multi-threaded processing, or even a distributed processing environment).

[0119] Specifically, as Figure 2 shown in the figure, the control method of the wall-mounted boiler provided in an embodiment of this specification may include the following steps.

[0120] Step S201, when a first preset condition is satisfied between the current required load and the minimum load, control the flow regulating device to regulate the flow rate of water flowing into the connecting water circuit and / or the heat exchange device.

[0121] The control method of the wall-mounted boiler in the embodiments of this specification can be applied to the controller in the wall-mounted boiler. The wall-mounted boiler has: a heat exchange device, a heating water circuit for heating, a domestic water circuit for heating domestic water, a heating device, a connecting water circuit, and a flow regulating device. The heating water circuit and the domestic water circuit are both connected to the heat exchange device. The heating device is used to heat the heating water in the heating water circuit. Two ends of the connecting water circuit are respectively connected to the domestic water circuit, and the connecting water circuit is connected in parallel with the heat exchange device. The flow regulating device is used to regulate the flow of water in the domestic water circuit into the connecting water circuit and / or the heat exchange device.

[0122] In this embodiment, the currently required load refers to the currently required heat load determined after receiving the user's water use signal.

[0123] In some embodiments of this specification, the control method may further include: when receiving the user's water use signal, obtaining the inlet water temperature, set temperature, and inlet water flow at the current moment; based on the inlet water temperature, set temperature, and inlet water flow at the current moment, determining the currently required load. In this embodiment, the controller can obtain the inlet water temperature, outlet water temperature, and inlet water flow at the current moment. Then, based on the inlet water temperature, set temperature, and inlet water flow at the current moment, the currently required load can be determined. In one embodiment, the wall-mounted boiler may further include a memory, and the controller can obtain the inlet water temperature, set temperature, and inlet water flow from the memory.

[0124] In one embodiment, the wall-mounted boiler may include a temperature sensor and a flow sensor. The temperature sensor can be used to detect the inlet water temperature and the outlet water temperature, and send the detected inlet water temperature and outlet water temperature to the memory for storage. The wall-mounted boiler may further include an input device, and the input device is used for the user to input data such as the set temperature and mode. The memory can also be used to store data such as the set temperature input by the user. The flow sensor can detect the inlet water flow or the outlet water flow, and send the detected inlet water flow or outlet water flow to the memory for storage.

[0125] In this embodiment, the minimum load refers to the minimum working load of the wall-mounted boiler. The minimum working load can be stored in the memory of the wall-mounted boiler. The controller can read the minimum load from the memory.

[0126] After obtaining the currently required load and the minimum load, the controller can determine whether the first preset condition is satisfied between the currently required load and the minimum load. When the first preset condition is satisfied between the currently required load and the minimum load, the controller can control the flow regulating device to regulate the flow of water flowing into the connecting water circuit and / or the heat exchange device.

[0127] In some embodiments of this specification, the first preset condition may include: the current required load is less than the minimum load. In this embodiment, when the current required load is less than the minimum load, the controller may control the flow regulating device to regulate the flow rate of the water flowing into the connecting waterway and / or the heat exchange device.

[0128] In some embodiments of this specification, the first preset condition may include: the difference between the minimum load and the current required load is greater than a preset load value; wherein, the preset load value is greater than zero. In this embodiment, only when the difference between the minimum load and the current required load is greater than the preset load value, the flow regulating device is controlled to regulate the flow rate of the water flowing into the connecting waterway and / or the heat exchange device. That is, only when the minimum load exceeds the current required load by a large margin, the flow regulating device is controlled to regulate the flow rate of the water flowing into the connecting waterway and / or the heat exchange device.

[0129] When the minimum load is greater than the current required load, it may cause the outlet temperature of the domestic waterway to be greater than the set temperature. Therefore, the controller may control the flow regulating device to increase the water flow rate flowing into the connecting water pipe and / or decrease the water flow rate flowing into the heat exchange device, so as to reduce the outlet temperature of the domestic waterway and avoid over-temperature phenomena.

[0130] Step S202, when the second preset condition is satisfied, control the heating device to stop heating.

[0131] In this step, considering that the outlet temperature still does not meet the user's requirements after the flow regulating device adjusts the flow rate, therefore, after controlling the flow regulating device to regulate the flow rate of the water flowing into the connecting waterway and / or the heat exchange device, the controller may determine whether the second preset condition is satisfied. When the second preset condition is satisfied, the heating device may be controlled to stop heating. After the heating device stops heating, the water temperature of the heating water in the heating waterway decreases, which can further reduce the outlet temperature of the domestic waterway.

[0132] In this step, during the process of stopping heating, the flow rate of the water flowing into the connecting pipe in the domestic waterway remains unchanged, that is, the water in the domestic waterway continues to flow into the connecting pipe.

[0133] In some embodiments of this specification, when the second preset condition is satisfied, controlling the heating device to stop heating may include: obtaining the set temperature and the outlet water temperature; the outlet water temperature is the domestic water temperature at the outlet of the domestic waterway at the current moment; judging whether the second preset condition is satisfied between the outlet water temperature and the set temperature; if so, controlling the heating device to stop heating. In this embodiment, it can be judged whether the second preset condition is satisfied according to the outlet water temperature and the set temperature.

[0134] In some embodiments of the present specification, the second preset condition may include: the outlet water temperature is greater than the set temperature. In this embodiment, after the flow regulating device adjusts the flow rate, when the outlet water temperature is still greater than the set temperature, the heating device is controlled to stop heating.

[0135] In some embodiments of the present specification, the second preset condition may include: the difference between the outlet water temperature and the set temperature is greater than a preset temperature difference; the preset temperature difference is greater than zero. In this embodiment, after the flow regulating device adjusts the flow rate, when the outlet water temperature still exceeds the set temperature by a large margin, the heating device is controlled to stop heating.

[0136] In the above embodiments, it is determined whether the second preset condition is satisfied based on the outlet water temperature and the set temperature. It can be understood that in the embodiments of the present specification, other methods may also be used to determine whether the second preset condition is satisfied, and the present specification does not limit this. Exemplarily, in one embodiment, the controller may determine whether the second preset condition is satisfied based on the difference between the minimum load and the current required load. When the difference between the minimum load and the current required load is greater than a preset load difference, it is determined that the second preset condition is satisfied. That is, when the minimum load exceeds the current required load by a large margin, the heating device is controlled to stop heating. The preset load difference here can be set according to actual needs.

[0137] Step S203, when the third preset condition is satisfied, control the heating device to start heating.

[0138] In this step, considering that the outlet temperature may be too low after the heating device stops heating, therefore, after controlling the heating device to stop heating, the controller may control the heating device to start heating when the third preset condition is satisfied.

[0139] In this step, when controlling the heating device to start heating, the flow regulating device can be controlled to adjust the water in the domestic water circuit so that it does not flow into the communicating pipe, so as to accelerate the rise of the outlet water temperature.

[0140] In some embodiments of the present specification, when the third preset condition is satisfied, controlling the heating device to start heating may include: obtaining the set temperature and the outlet water temperature; the outlet water temperature is the temperature of the domestic water at the outlet of the domestic water circuit at the current moment; determining whether the outlet water temperature and the set temperature satisfy the third preset condition; if so, controlling the heating device to start heating. In this embodiment, it can be determined whether the third preset condition is satisfied based on the outlet water temperature and the set temperature at the current moment.

[0141] In some embodiments of the present specification, the third preset condition may include: the outlet water temperature is lower than the set temperature. In this embodiment, when the outlet water temperature is lower than the set temperature, the heating device can be controlled to heat the heating water, so as to increase the outlet water temperature of the domestic water circuit.

[0142] In some embodiments of the present specification, the third preset condition may include: the difference between the set temperature and the outlet water temperature is greater than a preset temperature difference; the preset temperature difference is greater than zero. The preset temperature difference can be preset by the system or set by the user according to requirements. In this embodiment, when the set temperature exceeds the outlet water temperature by a large margin, the heating device can be controlled to heat the heating water, so as to increase the outlet water temperature of the domestic water circuit.

[0143] When the first preset condition is satisfied between the current required load and the minimum load every time the user uses water, the flow regulating device is controlled to regulate the flow of the water in the domestic water circuit flowing into the heat exchange device and / or the connected water circuit. Since both ends of the connecting pipe are connected to the domestic water and are in parallel with the heat exchange device, the flow of the cold water used for mixing with the hot water flowing out of the heat exchange device in the connecting pipe can be regulated, or the flow of the hot water mixed with the cold water flowing out of the connecting pipe in the heat exchange device can be regulated, so that the outlet water temperature of the domestic water circuit can be regulated to avoid over-temperature phenomenon. Further, after controlling the flow regulating device to regulate the flow of the water in the domestic water circuit flowing into the heat exchange device and / or the connected water circuit, if the second condition is satisfied, the heating device of the wall-mounted boiler can be controlled to stop heating the heating water in the heating water circuit of the wall-mounted boiler, which can further avoid over-temperature phenomenon. Furthermore, after controlling the heating device to stop working, if the third condition is satisfied, the heating device can be controlled to start heating, which can avoid too low outlet water temperature. Through this solution, the constant temperature regulation ability of the wall-mounted boiler can be improved, and the over-high or over-low outlet water temperature can be avoided, so that the temperature fluctuation can be reduced or avoided, the constant temperature effect of the water heater can be improved, and the user's water use experience can be improved.

[0144] In some embodiments of the present specification, controlling the flow regulating device to regulate the flow of the water flowing into the connected water circuit and / or the heat exchange device may include: controlling the flow regulating device to regulate the flow of the water flowing into the connected water circuit according to the difference between the minimum load and the current required load.

[0145] In this embodiment, the flow regulating device can be controlled to regulate the flow rate of the water flowing into the connected water circuit according to the difference between the minimum load and the current required load. When the difference between the minimum load and the current required load is larger, the outlet water temperature is higher when heating at the minimum load. Therefore, the flow rate of the water in the domestic water circuit flowing into the connected water circuit can be controlled to be larger.

[0146] In an exemplary embodiment, the flow rate of water flowing into the connected waterway can be determined according to a preset rule. For example, when the difference between the minimum load and the current required load is less than the first difference, the flow rate of water flowing into the connected waterway is adjusted to the first flow rate. When the difference between the minimum load and the current required load is between the first preset difference and the second preset difference, the flow rate of water flowing into the connected waterway is adjusted to the second preset flow rate. Here, the second preset difference is greater than the first preset difference, and the second preset flow rate is greater than the first preset flow rate. When the difference between the minimum load and the current required load is greater than the second preset difference, the flow rate of water flowing into the connected waterway can be adjusted to the third preset flow rate, and the third preset flow rate is greater than the second preset flow rate.

[0147] It can be understood that more preset differences and preset flow rates can also be set for more refined control. Of course, a calculation formula between the difference and the flow rate can also be set, and the flow rate can be calculated according to the difference. The size of the flow rate is positively correlated with the size of the difference.

[0148] In some embodiments of this specification, controlling the flow rate regulating device to adjust the flow rate of water flowing into the connected waterway and / or the heat exchange device may include: controlling the flow rate regulating device to adjust the flow rate of water flowing into the heat exchange device according to the size of the difference between the minimum load and the current required load. In this embodiment, the flow rate regulating device can be controlled to adjust the flow rate of water flowing into the heat exchange device according to the size of the difference between the minimum load and the current required load. When the difference between the minimum load and the current required load is larger, the outlet water temperature is higher when heating at the minimum load. Therefore, the flow rate of water flowing from the domestic waterway into the heat exchange device can be controlled to be smaller.

[0149] In some embodiments of this specification, controlling the flow rate regulating device to adjust the flow rate of water flowing into the connected waterway and / or the heat exchange device may include: controlling the flow rate regulating device to gradually increase the flow rate of water flowing into the connected waterway until the difference between the outlet water temperature of the domestic waterway and the set temperature is within a preset range or until the flow rate of water flowing into the connected waterway is adjusted to the maximum.

[0150] In this embodiment, the flow rate regulating device can be controlled to gradually increase the flow rate of water flowing into the connected waterway until the current outlet water temperature of the domestic waterway is close to the set temperature or until the flow rate of water flowing into the connected waterway is adjusted to the maximum.

[0151] In some embodiments of this specification, controlling the heating device to stop heating may include: determining a first preset time period according to the difference between the outlet water temperature and the set temperature; controlling the heating device to stop heating for the first preset time period.

[0152] In this embodiment, the duration for which the heating device stops heating can be determined. When the second condition is satisfied, the first preset time period can be determined based on the difference between the outlet water temperature and the set temperature. For example, the greater the difference between the outlet water temperature and the set temperature, the longer the first preset time period, and vice versa. After the heating device stops heating for the first preset time period, the outlet water temperature approaches or is less than the set temperature.

[0153] Correspondingly, in some embodiments of this specification, the third preset condition may include: the duration for which the heating device stops heating reaches the first preset time period. In this embodiment, when the duration for which the heating device stops heating reaches the first preset time period, the heating device can be controlled to start heating.

[0154] In some embodiments of this specification, the method may further include: when the current required load is greater than the minimum load, controlling the heating device to heat at the current required load; when the current required load is less than or equal to the minimum load, controlling the heating device to heat at the minimum load. In this embodiment, when the current required load is greater than the minimum load, the heating device can be controlled to heat at the current required load, which can meet the user's water use requirements. When the current required load is less than or equal to the minimum load, the heating device can be controlled to heat at the minimum load. In this case, heating at the minimum load may cause the outlet water temperature to be too high, and the method in the embodiments of this specification can be used for control to output constant-temperature hot water.

[0155] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments. Specifically, reference can be made to the descriptions of the relevant processing-related embodiments above, and details will not be repeated here.

[0156] The above describes specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0157] The above method will be described below in conjunction with a specific embodiment. However, it should be noted that this specific embodiment is only for better illustrating this specification and does not constitute an improper limitation to this specification.

[0158] A control method for a wall-mounted boiler is provided in this specific embodiment. Please refer toFigure 3 , a flowchart of the control method in this specific embodiment is shown. As Figure 3 shown, the control method in this specific embodiment may include the following steps.

[0159] Step S301, when a user water use signal is received, determine whether the current required load is greater than the minimum load. If so, execute Step S302; otherwise, execute Step S303.

[0160] Step S302, control the heating device to work at the current required load.

[0161] Step S303, control the heating device to work at the minimum load.

[0162] Step S304, control the flow regulating device to increase the flow rate of the water flowing into the connected waterway.

[0163] Step S305, obtain the outlet water temperature and the set temperature at the current moment.

[0164] Step S306, determine whether the outlet water temperature is greater than the set temperature. If so, execute Step S307; otherwise, return to Step S305;

[0165] Step S307, control the heating device to stop heating.

[0166] Step S308, obtain the outlet water temperature and the set temperature at the current moment.

[0167] Step S309, determine whether the outlet water temperature is less than the set temperature. If so, execute Step S3010; otherwise, return to Step S308.

[0168] Step S310, control the heating device to start working, and control the flow regulating device to adjust the flow rate of the water flowing into the connected waterway to the minimum.

[0169] Step S311, obtain the outlet water temperature and the set temperature at the current moment.

[0170] Step S312, determine whether the outlet water temperature is greater than the set temperature. If so, return to Step S304; otherwise, return to Step S311.

[0171] In this embodiment, when the current required load is less than the minimum load, by combining the flow regulating device and the start / stop of the heating device to control the outlet water temperature, the constant temperature control ability of the wall-mounted boiler can be further improved, and the user water use experience can be improved.

[0172] In the embodiments of this specification, a wall-mounted boiler is also provided. As Figure 1As shown, the wall-mounted boiler may include: a heat exchange device 101, a heating water circuit 102 for heating, a domestic water circuit 103 for heating domestic water, a heating device 104, a connecting water circuit 105, a flow regulating device 106, and a controller ( Figure 1 not shown in the figure).

[0173] The heating water circuit 102 for heating and the domestic water circuit 103 for heating domestic water, both the heating water circuit 102 and the domestic water circuit 103 are connected to the heat exchange device 101.

[0174] The heat exchange device 101 is used for heat exchange between the domestic water in the domestic water circuit 103 and the heating water in the heating water circuit 102. The heating device 104 is used for heating the heating water in the heating water circuit 102.

[0175] Both ends of the connecting water circuit 105 are respectively connected to the domestic water circuit 103, and the connecting water circuit 105 is connected in parallel with the heat exchange device 101.

[0176] The flow regulating device 106 is used for regulating the flow rate of the water in the domestic water circuit 103 flowing into the connecting water circuit 105 and / or the heat exchange device 101.

[0177] The controller is used for controlling the flow regulating device 106 to regulate the flow rate of the water flowing into the connecting water circuit 105 and / or the heat exchange device 101 when the first preset condition is met between the current required load and the minimum load. It is also used for controlling the heating device 104 to stop heating when the second preset condition is met. It is also used for controlling the heating device 104 to start heating when the third preset condition is met.

[0178] Please refer to Figure 4 which shows a schematic structural diagram of the wall-mounted boiler in the embodiments of the present specification. As Figure 4 shown, in some embodiments of the present specification, the wall-mounted boiler may further include: a softening device 107, a first connecting pipe 108, and a second connecting pipe 109. The softening device 107 is used for softening the water flowing through the softening device 107. The first connecting pipe 108 is used for connecting the water source to the inlet of the softening device 107. The second connecting pipe 109 is used for connecting the outlet of the softening device 107 to the domestic water circuit 103, so that the water softened by the softening device 107 flows into the heating device 104 and / or the connecting water circuit 105 through the domestic water circuit 103. In this embodiment, the domestic water can be softened by setting the softening device to meet the user's demand for softened water.

[0179] In some embodiments of the present specification, the outlet of the softening device 107 is also connected to a water-using device for supplying softened water to the water-using device. In this embodiment, the outlet of the softening device may also be connected to water-using devices such as washing machines and dishwashers to provide softened cold water.

[0180] Please refer to Figure 5 , which shows a schematic structural diagram of a wall-mounted boiler in an embodiment of the present specification. As Figure 5 shown, in some embodiments of the present specification, the wall-mounted boiler may further include a third connecting pipe 110, a first valve 111, and a second valve 112. The third connecting pipe 110 is used to connect the first connecting pipe 108 to the domestic water circuit 103. The first valve 111 is provided on the first connecting pipe 108. The second valve 112 is provided on the third connecting pipe 110. The wall-mounted boiler has a softened working state and a non-softened working state. In the softened working state, the first valve 111 is turned on and the second valve 112 is closed. In the non-softened working state, the first valve 111 is closed and the second valve 112 is turned on. In this embodiment, by controlling the opening and closing of the first valve and the second valve, it is possible to control whether the wall-mounted boiler is in the softened working state.

[0181] In some embodiments of the present specification, the domestic water circuit 103 may include a water inlet pipe 1031 and a water outlet pipe 1032. The domestic water in the domestic water circuit 103 flows into the heat exchange device 101 from the water inlet pipe 1031 and then flows out of the heat exchange device 101 to the water outlet pipe 1032. The flow rate regulating device 106 may include a variable frequency water pump. In this embodiment, the flow rate of the heat exchange medium flowing in the third flow channel can be adjusted by adjusting the rotation speed of the variable frequency water pump

[0182] As Figure 6 shown, in some embodiments of the present specification, the variable frequency water pump is provided on the water inlet pipe 1031 and is located downstream of the connection between the communication water circuit 105 and the water inlet pipe 1031 along the water flow direction.

[0183] As Figure 7 shown, in some embodiments of the present specification, the variable frequency water pump is provided on the water outlet pipe 1032 and is located upstream of the connection between the communication water circuit 105 and the water outlet pipe 1032 along the water flow direction.

[0184] In some embodiments of the present specification, the domestic water circuit 103 may include a water inlet pipe 1031 and a water outlet pipe 1032. The domestic water in the domestic water circuit 103 flows into the heat exchange device 101 from the water inlet pipe 1031 and then flows out of the heat exchange device 101 to the water outlet pipe 1032. The flow rate regulating device 106 may include a switching valve.

[0185] AsFigure 8 As shown, in one embodiment, the switching valve is disposed on the communication waterway 105. When the first preset condition is satisfied between the currently required load and the minimum load, the switching valve is turned on, so that the water in the communication waterway 105 is connected. Exemplarily, when the currently required load is less than the minimum load, the switching valve is turned on, and the cold water flowing out of the communication waterway is mixed with the hot water flowing out of the heat exchange device and then flows out from the domestic waterway, which can avoid overheating.

[0186] As Figure 9 shown, in one embodiment, the switching valve is disposed on the outlet pipe 1032 and is located upstream of the connection between the communication waterway 105 and the outlet pipe 1032 along the water flow direction. When the first preset condition is satisfied between the currently required load and the minimum load, the opening degree of the switching valve is reduced, so that the flow rate of the water flowing into the heat exchange device 101 is reduced, or in other words, the flow rate of the water flowing into the communication waterway 105 is increased. Exemplarily, when the currently required load is less than the minimum load, the opening degree of the switching valve is reduced, the amount of water flowing into the communication waterway increases, the flow rate flowing into the heat exchange device decreases, and the cold water flowing out of the communication waterway is mixed with the hot water flowing out of the heat exchange device and then flows out from the domestic waterway, which can avoid overheating.

[0187] As Figure 10 shown, in one embodiment, the switching valve is disposed on the inlet pipe 1031 and is located downstream of the connection between the communication waterway 105 and the inlet pipe 1031 along the water flow direction. When the first preset condition is satisfied between the currently required load and the minimum load, the opening degree of the switching valve is reduced, so that the flow rate of the water flowing into the heat exchange device 101 is reduced, or in other words, the flow rate of the water flowing into the communication waterway 105 is increased. Exemplarily, when the currently required load is less than the minimum load, the opening degree of the switching valve is reduced, the amount of water flowing into the communication waterway increases, the flow rate flowing into the heat exchange device decreases, and the cold water flowing out of the communication waterway is mixed with the hot water flowing out of the heat exchange device and then flows out from the domestic waterway, which can avoid overheating.

[0188] In some embodiments of the present specification, the flow rate regulating device 106 includes a switching valve. As Figure 8 shown, the switching valve is disposed on the communication waterway 105. When the second preset condition is satisfied, the switching valve is turned on, so that the water in the communication waterway 105 is connected. When the second preset condition is satisfied, for example, when the outlet water temperature is still greater than the set temperature, the heating device can be controlled to stop heating, and at the same time, the switching valve is kept turned on so that the water in the communication waterway remains flowing.

[0189] When the third preset condition is met, the switching valve disconnects, preventing the water in the connecting waterway 105 from flowing. When the third preset condition is met, for example, when the outlet water temperature is lower than the set temperature, the heating device can be controlled to start heating. At the same time, the switching valve is controlled to disconnect, preventing the water in the connecting waterway from flowing and accelerating the rise of the outlet water temperature.

[0190] In some embodiments of this specification, the switching valve can be a solenoid valve. The controller can be electrically connected to the solenoid valve for controlling the opening degree of the solenoid valve.

[0191] In some embodiments of this specification, the domestic waterway 103 can include a water inlet pipe 1031 and a water outlet pipe 1032. The domestic water in the domestic waterway 103 flows into the heat exchange device 101 from the water inlet pipe 1031 and then flows out of the heat exchange device 101 to the water outlet pipe 1032. The flow regulating device 106 can include a three-way valve.

[0192] In one embodiment, as Figure 11 shown, the three-way valve can be arranged at the connection between the water outlet pipe 1032 and the connecting waterway 105.

[0193] In some embodiments of this specification, when the first preset condition is met between the current required load and the minimum load, the three-way valve connects the water outlet pipe 1032 and the connecting waterway 105. Exemplarily, when the current required load is less than the minimum load, the three-way valve conducts the water outlet pipe and the connecting waterway, so that the cold water flowing out of the connecting waterway is mixed with the hot water flowing out of the heat exchange device and then flows out from the water outlet pipe of the domestic waterway, which can avoid overheating.

[0194] In some embodiments of this specification, when the second preset condition is met, the three-way valve can connect the water outlet pipe 1032 and the connecting waterway 105. When the second preset condition is met, for example, when the outlet water temperature is still higher than the set temperature, the heating device can be controlled to stop heating. At the same time, the switching valve is kept conducting, so that the water in the connecting waterway keeps flowing.

[0195] In some embodiments of this specification, when the third preset condition is met, the three-way valve can isolate the water outlet pipe 1032 from the connecting waterway 105. When the third preset condition is met, for example, when the outlet water temperature is lower than the set temperature, the heating device can be controlled to start heating. At the same time, the switching valve is controlled to disconnect, preventing the water in the connecting waterway from flowing and accelerating the rise of the outlet water temperature.

[0196] As Figure 11As shown, in some embodiments of this specification, the flow rate regulating device 106 includes a three-way valve. The three-way valve includes a first interface and a second interface connected to the outlet pipe 1032, and a third interface connected to the communication waterway 105; the first interface is located upstream of the second interface.

[0197] When a first preset condition is satisfied between the current required load and the minimum load, the second interface communicates with the third interface.

[0198] When a second preset condition is satisfied, the second interface remains in communication with the third interface.

[0199] When a third preset condition is satisfied, the second interface is not in communication with the third interface.

[0200] In one embodiment, as Figure 12 shown, the three-way valve is disposed at the connection between the inlet pipe 1031 and the communication waterway 105.

[0201] In some embodiments of this specification, when a first preset condition is satisfied between the current required load and the minimum load, the three-way valve connects the inlet pipe 1031 and the communication waterway 105. Exemplarily, when the current required load is less than the minimum load, the three-way valve conducts the inlet pipe and the communication waterway, so that the cold water flowing out of the communication waterway is mixed with the hot water flowing out of the heat exchange device and then flows out from the domestic waterway, which can avoid overheating.

[0202] In some embodiments of this specification, when a second preset condition is satisfied, the three-way valve can connect the inlet pipe 1031 and the communication waterway 105. When a second preset condition is satisfied, for example, when the outlet water temperature is still greater than the set temperature, the heating device can be controlled to stop heating. At the same time, the three-way valve conducts the inlet pipe and the communication waterway, so that the water in the communication waterway remains flowing.

[0203] In some embodiments of this specification, when a third preset condition is satisfied, the three-way valve can isolate the inlet pipe 1031 and the communication waterway 105. When a third preset condition is satisfied, for example, when the outlet water temperature is lower than the set temperature, the heating device can be controlled to start heating. At the same time, the three-way valve is controlled to isolate the inlet pipe and the communication waterway, so that the water in the communication waterway does not flow, in order to accelerate the rise of the outlet water temperature.

[0204] As Figure 12 shown, in some embodiments of this specification, the flow rate regulating device 106 includes a three-way valve. The three-way valve may include a first interface and a second interface connected to the inlet pipe 1031, and a third interface connected to the communication waterway 105; the first interface is located upstream of the second interface.

[0205] When a first preset condition is satisfied between the current required load and the minimum load, the first interface is connected to the third interface.

[0206] When a second preset condition is satisfied, the first interface remains connected to the third interface.

[0207] When a third preset condition is satisfied, the first interface is not connected to the third interface.

[0208] In some embodiments of the present specification, the three-way valve is a flow-adjustable three-way valve. The controller can be connected to the three-way valve for adjusting the opening degree of the interfaces of the three-way valve.

[0209] As Figure 13 shown, in some embodiments of the present specification, the domestic water circuit 103 includes a water inlet pipe 1031 and a water outlet pipe 1032. The domestic water in the domestic water circuit 103 flows into the heat exchange device 101 from the water inlet pipe 1031 and then flows out of the heat exchange device 101 to the water outlet pipe 1032. One end of the second connecting pipe 109 is connected to the outlet of the water softening device 107, and the other end of the second connecting pipe 109 is connected to the connection point between the water inlet pipe 1031 and the communication water circuit 105.

[0210] The flow regulating device 106 may include a four-way valve. The four-way valve can be arranged at the connection point between the water inlet pipe 1031 and the communication water circuit 105. When a first preset condition is satisfied between the current required load and the minimum load, the four-way valve connects the communication water circuit 105 to the water inlet pipe 1031. Exemplarily, when the current required load is less than the minimum load, the four-way valve conducts the water inlet pipe and the communication water circuit, so that the cold water flowing out of the communication water circuit and the hot water flowing out of the heat exchange device are mixed and then flow out from the domestic water circuit, which can avoid overheating.

[0211] In some embodiments of the present specification, when a second preset condition is satisfied, the four-way valve connects the water inlet pipe 1031 to the communication water circuit 105.

[0212] In some embodiments of the present specification, when a third preset condition is satisfied, the four-way valve isolates the water inlet pipe 1031 from the communication water circuit 105.

[0213] As Figure 13 shown, in some embodiments of the present specification, the four-way valve includes a first interface and a second interface connected to the water outlet pipe 1032, a third interface connected to the communication water circuit 105, and a fourth interface connected to the other end of the second connecting pipe. The first interface is located upstream of the second interface.

[0214] When a first preset condition is satisfied between the current required load and the minimum load, the first interface is connected to the third interface.

[0215] In some embodiments of the present specification, when the second preset condition is satisfied, the first interface is in communication with the third interface.

[0216] In some embodiments of the present specification, when the third preset condition is satisfied, the first interface is not in communication with the third interface.

[0217] In some embodiments of the present specification, the four-way valve is a flow-adjustable four-way valve. The controller can adjust the opening degree of the interfaces of the four-way valve.

[0218] The embodiments of the present specification also provide a computer device based on the control method of the wall-mounted boiler provided in the embodiments of the present specification. Among them, the memory is used to store instructions executable by the processor. When the processor executes the instructions, it implements the steps of the control method of the wall-mounted boiler described in any of the above embodiments.

[0219] In this embodiment, the input device may specifically be one of the main devices for information exchange between the user and the computer system. The input device may include a keyboard, a mouse, a camera, a scanner, a light pen, a handwriting input board, a voice input device, etc.; the input device is used to input the original data and the program for processing these data into the computer. The input device can also obtain and receive data transmitted from other modules, units, and devices. The processor can be implemented in any suitable manner. For example, the processor may take the form of, for example, a microprocessor or a processor and a computer-readable medium storing computer-readable program code (such as software or firmware) executable by the (micro)processor, logic gates, switches, an application specific integrated circuit (ASIC), a programmable logic controller, and an embedded microcontroller, etc. The memory may specifically be a memory device for storing information in modern information technology. The memory may include multiple levels. In a digital system, as long as it can store binary data, it can be a memory; in an integrated circuit, a circuit without a physical form but with a storage function is also called a memory, such as a RAM, a FIFO, etc.; in a system, a storage device with a physical form is also called a memory, such as a memory stick, a TF card, etc.

[0220] In this embodiment, the functions and effects specifically implemented by the computer device may be explained in comparison with other embodiments, and will not be elaborated here.

[0221] The embodiments of the present specification also provide a computer storage medium based on the control method of the wall-mounted boiler. The computer storage medium stores computer program instructions, and when the computer program instructions are executed, the steps of the control method of the wall-mounted boiler described in any of the above embodiments are implemented.

[0222] In this embodiment, the above storage medium includes, but is not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), Cache, Hard Disk Drive (HDD), or Memory Card. The memory can be used to store computer program instructions. The network communication unit can be set according to the standards specified by the communication protocol and is used for the interface of network connection communication.

[0223] In this embodiment, the functions and effects specifically implemented by the program instructions stored in the computer storage medium can be explained by comparison with other embodiments and will not be elaborated here.

[0224] Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the embodiments of this specification can be implemented by a general-purpose computing device. They can be concentrated on a single computing device or distributed on a network composed of multiple computing devices. Optionally, they can be implemented by program codes executable by the computing device. Thus, they can be stored in the storage device and executed by the computing device. And in some cases, the steps shown or described can be executed in a different order than here, or they can be separately fabricated into individual integrated circuit modules, or multiple modules or steps among them can be fabricated into a single integrated circuit module to implement. In this way, the embodiments of this specification are not limited to any specific combination of hardware and software.

[0225] It should be understood that the above description is for illustrative purposes rather than for limitation. By reading the above description, many embodiments and many applications other than the provided examples will be obvious to those skilled in the art. Therefore, the scope of this specification should not be determined with reference to the above description, but should be determined with reference to the full scope of the foregoing claims and the equivalents of these claims.

[0226] The above is only the preferred embodiment of this specification and is not used to limit this specification. For those skilled in the art, the embodiments of this specification can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this specification shall be included within the protection scope of this specification.

Claims

1. A control method for a wall-mounted boiler, characterized in that, The wall-mounted boiler has: a heat exchange device; a heating water circuit for heating and a domestic water circuit for heating domestic water, and both the heating water circuit and the domestic water circuit are communicated with the heat exchange device; a heating device for heating the heating water in the heating water circuit; a connecting water circuit, and both ends of the connecting water circuit are respectively communicated with the domestic water circuit and the connecting water circuit is connected in parallel with the heat exchange device; a flow rate regulating device for regulating the flow rate of water in the domestic water circuit into the connecting water circuit and / or the heat exchange device; wherein, the control method includes: When the first preset condition is satisfied between the current required load and the minimum load, controlling the flow rate regulating device to regulate the flow rate of water flowing into the connecting water circuit and / or the heat exchange device; When the second preset condition is satisfied, controlling the heating device to stop heating; When the third preset condition is satisfied, controlling the heating device to start heating.

2. The control method of the wall-mounted boiler according to claim 1, characterized in that The first preset condition includes one of the following: The current required load is less than the minimum load; The difference between the minimum load and the current required load is greater than a preset load value; wherein, the preset load value is greater than zero.

3. The control method of the wall-mounted boiler according to claim 1, characterized in that, It further includes: When receiving a water use signal from the user, obtaining the inlet water temperature, the set temperature and the inlet water flow rate at the current moment; Based on the inlet water temperature, the set temperature and the inlet water flow rate at the current moment, determining the current required load.

4. The control method of the wall-mounted boiler according to claim 1, characterized in that, Controlling the flow rate regulating device to regulate the flow rate of water flowing into the connecting water circuit and / or the heat exchange device includes: According to the magnitude of the difference between the minimum load and the current required load, controlling the flow rate regulating device to regulate the flow rate of water flowing into the connecting water circuit.

5. The control method of the wall-mounted boiler according to claim 1, characterized in that, Controlling the flow rate regulating device to regulate the flow rate of water flowing into the connecting water circuit and / or the heat exchange device includes: Controlling the flow rate regulating device to gradually increase the flow rate of water flowing into the connecting water circuit until the difference between the outlet water temperature of the domestic water circuit and the set temperature is within a preset range or until the flow rate of water flowing into the connecting water circuit is adjusted to the maximum.

6. The control method of the wall-mounted boiler according to claim 1, characterized in that, When the second preset condition is satisfied, controlling the heating device to stop heating includes: Obtaining the set temperature and the outlet water temperature; the outlet water temperature is the temperature of the domestic water at the outlet of the domestic water circuit at the current moment; Judging whether the second preset condition is satisfied between the outlet water temperature and the set temperature; If so, controlling the heating device to stop heating.

7. The control method of the wall-mounted boiler according to claim 6, wherein, The second preset condition includes one of the following: The outlet water temperature is greater than the set temperature; The difference between the outlet water temperature and the set temperature is greater than a preset temperature difference; the preset temperature difference is greater than zero.

8. The control method of the wall-mounted boiler according to claim 6, characterized in that, Controlling the heating device to stop heating includes: Determining a first preset time period according to the difference between the outlet water temperature and the set temperature; Controlling the heating device to stop heating for the first preset time period.

9. The control method of the wall-mounted boiler according to claim 8, wherein The third preset condition includes: The duration for which the heating device stops heating reaches the first preset time period.

10. The control method of the wall-mounted boiler according to claim 1, characterized in that, When the third preset condition is satisfied, controlling the heating device to start heating includes: Obtain the set temperature and the outlet water temperature; the outlet water temperature is the domestic water temperature at the outlet of the domestic water circuit at the current moment; Judge whether the third preset condition is satisfied between the outlet water temperature and the set temperature; If so, control the heating device to start heating.

11. The control method of the wall-mounted boiler according to claim 10, characterized in that, The third preset condition includes: The outlet water temperature is lower than the set temperature; The difference between the set temperature and the outlet water temperature is greater than a preset temperature difference; the preset temperature difference is greater than zero.

12. The control method of the wall-mounted boiler according to claim 1, wherein It also includes: When the current required load is greater than the minimum load, control the heating device to heat at the current required load; When the current required load is less than or equal to the minimum load, control the heating device to heat at the minimum load.

13. A wall-mounted boiler, characterized in that, It includes: A heat exchange device; A heating water circuit for heating and a domestic water circuit for heating domestic water, and both the heating water circuit and the domestic water circuit are connected to the heat exchange device; A heating device for heating the heating water in the heating water circuit; A connecting water circuit, with both ends of the connecting water circuit respectively connected to the domestic water circuit and the connecting water circuit being in parallel with the heat exchange device; A flow regulating device for regulating the flow of water in the domestic water circuit into the connecting water circuit and / or the heat exchange device; A controller, which is configured to control the flow regulating device to adjust the flow rate of water flowing into the communicating waterway and / or the heat exchange device when a first preset condition is met between the current required load and the minimum load; is further configured to control the heating device to stop heating when a second preset condition is met; and is further configured to control the heating device to start heating when a third preset condition is met 。 14. The wall-hung boiler according to claim 13, wherein, It also includes: A softening device for softening the water flowing through the softening device; A first connecting pipe for connecting the water source to the inlet of the softening device; A second connecting pipe for connecting the outlet of the softening device to the domestic water circuit, so that the water softened by the softening device flows into the heating device and / or the connecting water circuit via the domestic water circuit.

15. The wall-mounted boiler according to claim 14, wherein, The outlet of the softening device is also connected to a water-using device for supplying softened water to the water-using device.

16. The wall-mounted boiler according to claim 14, characterized in that, It also includes: A third connecting pipe for connecting the first connecting pipe to the domestic water circuit; A first valve provided on the first connecting pipe; A second valve provided on the second connecting pipe; The wall-mounted boiler has a softening working state and a non-softening working state; in the softening working state, the first valve is turned on and the second valve is turned off; in the non-softening working state, the first valve is turned off and the second valve is turned on.

17. The wall-mounted boiler according to claim 13, wherein The domestic water circuit includes an inlet pipe and an outlet pipe, and the domestic water in the domestic water circuit flows into the heat exchange device from the inlet pipe and then flows out of the heat exchange device to the outlet pipe; The flow regulating device includes a variable-frequency water pump; The variable-frequency water pump is provided on the outlet pipe and is located upstream of the connection between the connecting water circuit and the outlet pipe along the water flow direction; or, The variable-frequency water pump is provided on the inlet pipe and is located downstream of the connection between the connecting water circuit and the inlet pipe along the water flow direction.

18. The wall-mounted boiler according to claim 13, characterized in that, The domestic water circuit includes an inlet pipe and an outlet pipe, and the domestic water in the domestic water circuit flows into the heat exchange device from the inlet pipe and then flows out of the heat exchange device to the outlet pipe; The flow rate regulating device includes a switching valve; the switching valve is arranged on the connecting water path, and when a first preset condition is satisfied between the current required load and the minimum load, the switching valve is turned on to allow the water in the connecting water path to flow; or, the switching valve is arranged on the outlet pipe and is located upstream of the connection between the connecting water path and the outlet pipe along the water flow direction, and when a first preset condition is satisfied between the current required load and the minimum load, the opening degree of the switching valve is reduced to reduce the flow rate of the water flowing into the heat exchange device; or, the switching valve is arranged on the inlet pipe and is located downstream of the connection between the connecting water path and the inlet pipe along the water flow direction, and when a first preset condition is satisfied between the current required load and the minimum load, the opening degree of the switching valve is reduced to reduce the flow rate of the water flowing into the heat exchange device; or, The flow rate regulating device includes a three-way valve; the three-way valve is arranged at the connection between the outlet pipe and the connecting water path, and when a first preset condition is satisfied between the current required load and the minimum load, the three-way valve connects the outlet pipe and the connecting water path; or, the three-way valve is arranged at the connection between the inlet pipe and the connecting water path, and when a first preset condition is satisfied between the current required load and the minimum load, the three-way valve connects the inlet pipe and the connecting water path.

19. The wall-hung boiler according to claim 18, wherein, The flow rate regulating device includes a switching valve; the switching valve is arranged on the connecting water path; When a second preset condition is satisfied, the switching valve is turned on to allow the water in the connecting water path to flow; When a third preset condition is satisfied, the switching valve is turned off to prevent the water in the connecting water path from flowing.

20. The wall-hung boiler according to claim 18, wherein The switching valve is a solenoid valve; the controller is electrically connected to the solenoid valve for controlling the opening degree of the solenoid valve.

21. The wall-mounted boiler according to claim 18, wherein The flow rate regulating device includes a three-way valve; the three-way valve is arranged at the connection between the outlet pipe and the connecting water path; When a second preset condition is satisfied, the three-way valve connects the outlet pipe and the connecting water path; When a third preset condition is satisfied, the three-way valve isolates the outlet pipe and the connecting water path.

22. The wall-mounted boiler according to claim 18, characterized in that, The flow rate regulating device includes a three-way valve; the three-way valve is arranged at the connection between the inlet pipe and the connecting water path; When a second preset condition is satisfied, the three-way valve connects the inlet pipe and the connecting water path; When a third preset condition is satisfied, the three-way valve isolates the inlet pipe and the connecting water path.

23. The wall-mounted boiler according to claim 18, characterized in that, The flow rate regulating device includes a three-way valve; the three-way valve includes a first interface and a second interface connected to the outlet pipe, and a third interface connected to the connecting water path; the first interface is located upstream of the second interface; When a first preset condition is satisfied between the current required load and the minimum load, the second interface is connected to the third interface.

24. The wall-mounted boiler according to claim 18, wherein, The flow rate regulating device includes a three-way valve; the three-way valve includes a first interface and a second interface connected to the water inlet pipe, and a third interface connected to the communication waterway; the first interface is located upstream of the second interface; When a first preset condition is satisfied between the current required load and the minimum load, the first interface is communicated with the third interface.

25. The wall-mounted boiler according to claim 18, characterized in that, The three-way valve is a flow rate adjustable three-way valve.

26. The wall-mounted boiler according to claim 14, characterized in that, The domestic waterway includes a water inlet pipe and a water outlet pipe, and domestic water in the domestic waterway flows into the heat exchange device from the water inlet pipe and then flows out of the heat exchange device to the water outlet pipe; one end of the second communication pipe is connected to the outlet of the softening device, and the other end of the second communication pipe is connected to the connection point of the water inlet pipe and the communication waterway; The flow rate regulating device includes a four-way valve, and the four-way valve is arranged at the connection point of the water inlet pipe and the communication waterway; When a first preset condition is satisfied between the current required load and the minimum load, the four-way valve connects the communication waterway with the water inlet pipe.

27. The wall-hung boiler according to claim 26, characterized in that, When a second preset condition is satisfied, the four-way valve connects the water inlet pipe with the communication waterway; When a third preset condition is satisfied, the four-way valve isolates the water inlet pipe from the communication waterway.

28. The wall-hung boiler according to claim 26, wherein, The four-way valve includes a first interface and a second interface connected to the water outlet pipe, a third interface connected to the communication waterway, and a fourth interface connected to the other end of the second communication pipe; the first interface is located upstream of the second interface; When a first preset condition is satisfied between the current required load and the minimum load, the first interface is communicated with the third interface.

29. The wall-mounted boiler according to claim 26, wherein, The four-way valve is a flow rate adjustable four-way valve.

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