Wall-mounted boiler and solar energy linkage energy-saving system, device and method

Abstract

The present application relates to a wall-mounted boiler and solar energy linkage energy-saving system, device and method. The present application relates to a wall-mounted boiler and solar energy linkage energy-saving method, which includes a solar heating device, a gas wall-mounted boiler and a heating terminal; the waterway of the solar heating device is arranged in parallel with the waterway of the gas wall-mounted boiler, and the waterways of the solar heating device and the gas wall-mounted boiler are connected in series with the heating terminal together, and a main water pump is arranged between the waterways of the solar heating device and the gas wall-mounted boiler and the heating terminal; a main three-way valve is arranged at the return water connection between the solar heating device and the gas wall-mounted boiler, and the main three-way valve is respectively connected to the return waterway of the heating terminal, the return waterway of the solar heating device and the gas wall-mounted boiler, and the main three-way valve is connected to the direction of the heating terminal. The present application has the effects of stable heating efficiency, high solar energy utilization rate and saving natural gas energy.

Description

Technical Field

[0001] The present application relates to the field of heating control systems, and in particular to a wall-mounted boiler and solar energy linkage energy-saving system, device and method. Background Art

[0002] In human life, in order to make the indoor space suitable for living and residence in the cold winter season, a heating system will be installed indoors to heat domestic water and indoor heating. With the popularity of solar water heaters, people have become accustomed to using solar water heaters to heat water and provide domestic hot water; gas wall-mounted boilers are also used to provide domestic hot water and heating water.

[0003] However, using gas-fired wall-mounted boilers alone to provide domestic hot water and heating requires a large amount of natural gas, which not only has high operating costs but is also a non-renewable energy source. When using the energy provided by solar water heaters alone for domestic hot water and heating, solar energy is affected by weather conditions and the size of the heater area, making the heating heat provided by solar energy unstable.

[0004] In order to save energy and reduce emissions, the staff linked the solar water heater with the gas wall-mounted boiler so that the solar water heater could also heat the heating water in the gas wall-mounted boiler. The inventor found that due to the unstable heating efficiency of solar energy, the temperature of the heating water is prone to instability during linkage, resulting in low heating efficiency. Summary of the invention

[0005] In order to make the heating efficiency more stable, the present application provides a wall-mounted boiler and solar energy linkage energy-saving system, device and method.

[0006] In the first aspect, the present application provides a wall-mounted boiler and solar energy linkage energy-saving system, which adopts the following technical solutions:

[0007] A wall-mounted boiler and solar energy linkage energy-saving system, comprising a solar heating device, a gas wall-mounted boiler and a heating terminal; the water channel of the solar heating device and the water channel of the gas wall-mounted boiler are arranged in parallel, the water channels of the solar heating device and the gas wall-mounted boiler are connected in series with the heating terminal, and a main water pump is arranged between the water channels of the solar heating device and the gas wall-mounted boiler and the heating terminal;

[0008] A main three-way valve is provided at the return water connection between the solar heating device and the gas wall-mounted boiler. The main three-way valve is respectively connected to the return water circuit of the heating end, the solar heating device and the return water circuit of the gas wall-mounted boiler, and the main three-way valve remains connected with the direction of the heating end.

[0009] By adopting the above technical solution, the main three-way valve is used to switch between solar heating and gas wall heating. When the heating efficiency of the solar water heater is high, the water path of the solar heating device and the water path of the heating end are connected by controlling the main three-way valve. At this time, the hot water in the solar water tank uses renewable energy to heat the heating end, thereby realizing the solar heating function; when the heating efficiency of the solar water heater is reduced, the water path of the gas wall-mounted boiler and the water path of the heating end are connected by controlling the main three-way valve, and the gas heating mechanism is controlled to start heating, thereby realizing the heating function of the gas wall-mounted boiler;

[0010] It can not only make full use of solar heating devices to reduce natural gas consumption; it can also switch to gas wall-mounted boiler heating when the solar heating efficiency is insufficient, so that the heating water can be heated more stably, so that the heating terminal can provide users with stable and efficient heating.

[0011] Optionally, it further includes a main control module for controlling the system, the main control module includes a heating switching unit for controlling the solar heating device and the gas wall-mounted boiler;

[0012] The solar heating device includes a solar water tank, in which a solar sensor for sensing the water temperature of the solar water tank is arranged; a wall-mounted boiler sensor for sensing the temperature is arranged at the return water of the gas wall-mounted boiler;

[0013] The solar energy sensor and the wall-mounted boiler sensor are connected to the heating switching unit; the main three-way valve is an electric three-way valve, and the heating switching unit is connected to the electric three-way valve and the gas wall-mounted boiler; when the water temperature difference sensed by the solar energy sensor and the wall-mounted boiler sensor received by the heating switching unit is lower than the heating set temperature difference, the electric three-way valve is controlled to be connected to the gas wall-mounted boiler, and the gas wall-mounted boiler is controlled to start heating.

[0014] By adopting the above technical solution, when the heating efficiency of the solar heating device is reduced, the heating switching unit controls the electric three-way valve to connect the wall-mounted boiler return pipe and the main pipe, and controls the gas wall-mounted boiler to start heating, and enters the wall-mounted boiler heating mode; when the heating efficiency of the solar heating device is high, the heating switching unit controls the electric three-way valve to connect the solar return pipe and the main pipe, and suspends the operation of the gas wall-mounted boiler, and enters the solar heating mode;

[0015] The heating switching unit can more intelligently switch between solar heating and gas wall heating, which can not only make full use of the solar heating device in a timely manner and reduce the consumption of natural gas, but also switch to gas heating in time when the efficiency of solar heating is insufficient, so that the heating water can be heated more stably, so that the heating terminal can provide users with stable and efficient heating.

[0016] Optionally, the main control module further includes an antifreeze unit, and the solar heating device includes a solar water outlet pipe and a solar water return pipe connected to the solar water tank, and a heating tape arranged outside the solar water outlet pipe and the solar water return pipe;

[0017] The solar sensor is connected to the antifreeze unit, and the antifreeze unit is connected to the heating belt; when the water temperature of the solar water tank sensed by the solar sensor is lower than the preset antifreeze temperature, the antifreeze unit controls the heating belt to start heating.

[0018] By adopting the above technical solution, when the pipeline is frozen or the temperature is low, the antifreeze unit can promptly control the heating tape to heat the solar water outlet pipe and the solar water return pipe, thereby thawing the solar water outlet pipe and the solar water return pipe, reducing the blockage in the solar water outlet pipe and the solar water return pipe, and returning the system to normal operation.

[0019] Optionally, the antifreeze unit is connected to the electric three-way valve and the gas wall-mounted boiler; when the water temperature of the solar water tank sensed by the solar sensor received by the antifreeze unit is lower than the preset antifreeze temperature, the electric three-way valve is controlled to intermittently connect the water channel between the gas wall-mounted boiler and the solar return pipe, and the gas wall-mounted boiler is controlled to start heating.

[0020] By adopting the above technical solution, when the pipeline is frozen or the temperature is low, the antifreeze unit can promptly control the electric three-way valve to intermittently connect the wall-mounted boiler return pipe and the solar return pipe, and control the gas wall-mounted boiler to start heating; the water heated by the gas wall-mounted boiler is thawed from the solar outlet pipe and the solar return pipe, thereby further improving the thawing efficiency and allowing the system to return to normal operation faster.

[0021] Optionally, it also includes an overheating protection unit, which is connected to the wall-mounted boiler sensor, the electric three-way valve and the main water pump; when the overheating protection unit receives the wall-mounted boiler return water temperature sensed by the wall-mounted boiler sensor and the temperature is greater than the preset overheating protection temperature, the electric three-way valve is controlled to connect the gas wall-mounted boiler water circuit and the main water pump is controlled to operate intermittently.

[0022] By adopting the above technical solution, when the heating efficiency of the solar heating device is too high, the overheating protection unit controls the electric three-way valve to connect the gas wall-mounted boiler water channel, and controls the main water pump to operate intermittently; thereby, the hot water of the solar heating device is not easy to overheat the gas wall-mounted boiler through the water channel, and the main water pump operates intermittently to dissipate the heat in the gas wall-mounted boiler more effectively, so that the gas wall-mounted boiler can get out of the overheating state more quickly.

[0023] Optionally, the main control module also includes a remote control unit with a wireless communication function, and the remote control unit is connected to the heating switching unit.

[0024] By adopting the above technical solution, users can perform remote query, control and parameter modification through the remote control unit; they can also upload the comprehensive operating data of the heating control system to the server, collect statistics on user data in the applicable area, and analyze and improve the system.

[0025] Optionally, it also includes a hot water tank, which is connected in parallel with the water circuit at the heating end and in series with the water circuit in parallel with the solar heating device and the gas wall-mounted boiler; a secondary three-way valve is provided at the connection between the hot water tank and the return water circuit at the heating end, and the secondary three-way valve remains connected with the water circuit in parallel with the solar heating device and the gas wall-mounted boiler.

[0026] By adopting the above technical solution, the heating mode can be switched through the auxiliary three-way valve, so that the heat generated by the solar heating device or the gas wall-mounted boiler can be used for heating or hot water heating, making the application of the system more flexible and users have more mode choices.

[0027] In the second aspect, the present application provides a wall-mounted boiler and solar energy linkage energy-saving device, which adopts the following technical solution:

[0028] A wall-mounted boiler and solar energy linkage energy-saving device, comprising a solar heating device, a gas wall-mounted boiler, a heating terminal and a main control module for control, wherein the main control module is installed on the outer wall of the gas wall-mounted boiler; the solar heating device comprises a solar water tank, wherein a solar sensor is arranged in the solar water tank; the main control module receives and displays the water temperature of the solar water tank sensed by the solar sensor;

[0029] The waterway of the solar water tank and the waterway of the gas wall-mounted boiler are arranged in the same direction and in parallel. The waterways of the solar water tank and the gas wall-mounted boiler are connected in series with the heating terminal. A main pipeline is arranged between the waterway of the solar heating device and the gas wall-mounted boiler and the heating terminal, and a main water pump is arranged on the main pipeline.

[0030] An electric three-way valve is provided at the return water connection between the solar heating device and the gas wall-mounted boiler. The electric three-way valve is respectively connected to the return water circuit of the heating end, the solar heating device and the return water circuit of the gas wall-mounted boiler, and the electric three-way valve is kept connected with the main pipeline; the main control module controls the electric three-way valve to be connected with the water circuit of the solar water tank or the gas wall-mounted boiler.

[0031] By adopting the above technical solution, when the heating efficiency of the solar heating device is reduced, the heating switching unit controls the electric three-way valve to connect the wall-mounted boiler return pipe and the main pipe, and controls the gas wall-mounted boiler to start heating, and enters the wall-mounted boiler heating mode; when the heating efficiency of the solar heating device is high, the heating switching unit controls the electric three-way valve to connect the solar return pipe and the main pipe, and suspends the operation of the gas wall-mounted boiler, and enters the solar heating mode;

[0032] The heating switching unit can more intelligently switch between solar heating and gas wall heating, which can not only make full use of the solar heating device in a timely manner and reduce the consumption of natural gas, but also switch to gas heating in time when the efficiency of solar heating is insufficient, so that the heating water can be heated more stably, so that the heating terminal can provide users with stable and efficient heating.

[0033] Optionally, the solar heating device further comprises a solar water outlet pipe and a solar water return pipe connected to the solar water tank, the gas wall-mounted boiler is connected to a wall-mounted boiler water outlet pipe and a wall-mounted boiler water return pipe, the solar water return pipe and the wall-mounted boiler water return pipe are connected to the electric three-way valve; the solar water outlet pipe is installed with a first filter;

[0034] The inlet and outlet ends of the heating terminal are respectively provided with a heating return pipe and a heating inlet pipe. The heating return pipe is connected to the solar return pipe through the main pipe, and the heating inlet pipe is connected to the solar outlet pipe through the main pipe. A second filter is provided on the heating return pipe.

[0035] By adopting the above technical solution and setting a first filter, impurities in the solar water tank can be prevented from entering the heating terminal or the hot water tank, thereby reducing pollution and blockage caused by impurities; by setting a second filter, impurities in the heating mechanism can be prevented from entering the water path of the gas wall-mounted boiler, thereby making the water path of the gas wall-mounted boiler more unobstructed.

[0036] Optionally, the hot water tank is provided with a connected heating water inlet pipe and a heating water return pipe, the heating water inlet pipe is connected to the solar water outlet pipe through a main pipe, and the heating water return pipe is connected to the solar water return pipe through a main pipe; the heating water inlet pipe and the heating water return pipe are passed through the hot water tank and are arranged in a plurality of groups of S-shaped bends in the hot water tank.

[0037] By adopting the above technical solution, the domestic water in the hot water tank is heat exchanged through the S-shaped water pipes, and the water in the hot water tank is heated without water circulation, thereby further reducing the pollution of the domestic water in the hot water tank.

[0038] In a third aspect, the present application provides a wall-mounted boiler and solar energy linkage energy saving method, which adopts the following technical solution:

[0039] A wall-mounted boiler and solar energy linkage energy saving method, comprising the following steps:

[0040] When receiving the power-on command, the solar sensor and the boiler sensor start to operate;

[0041] Determine the solar water tank temperature sensed by the solar sensor and the return water temperature of the wall-mounted boiler sensed by the wall-mounted boiler sensor;

[0042] When the temperature difference between the solar water tank temperature and the return water temperature of the wall-mounted boiler is higher than the set temperature difference for heating, the electric three-way valve is controlled to be connected to the solar water tank;

[0043] When the temperature difference between the solar water tank temperature and the return water temperature of the wall-mounted boiler is lower than the heating set temperature difference, the electric three-way valve is controlled to be connected with the gas wall-mounted boiler, and the gas wall-mounted boiler is controlled to start heating.

[0044] By adopting the above technical solution, the electric three-way valve is controlled by the heating switching unit to connect the water path of the solar water tank with the water path of the heating terminal, so that the sustainable solar energy can be fully utilized for heating and the consumption of natural gas can be reduced; the electric three-way valve is controlled by the heating switching unit to connect the water path of the gas wall-mounted boiler with the water path of the heating terminal, so that when the solar heating efficiency is insufficient, it can be switched to gas heating in time, so that the heating terminal can provide users with stable and efficient heating;

[0045] By judging the temperature difference between the solar water tank temperature and the return water temperature of the wall-mounted boiler, compared with directly judging the solar water tank temperature, it is more effective to judge whether the solar heating efficiency is sufficient to replace the gas wall-mounted boiler for heating in the wall-mounted boiler heating mode, thereby further stabilizing the heating efficiency at the heating end.

[0046] Optionally, the following steps are also included:

[0047] Determine the size of the solar water tank temperature;

[0048] When the temperature of the solar water tank is lower than the antifreeze set temperature, the heating tape is controlled to start heating, or the electric three-way valve is controlled to intermittently connect the water path between the gas wall-mounted boiler and the solar return pipe and control the gas wall-mounted boiler to start heating.

[0049] By adopting the above technical solution, when the pipeline freezes, when the temperature of the solar water tank received by the antifreeze unit is lower than the antifreeze set temperature, the water heated by the heating tape or the gas wall-mounted boiler is thawed from the inside of the solar water outlet pipe and the solar water return pipe. In cold climates or when the pipeline freezes, the blockage in the solar water outlet pipe and the solar water return pipe is reduced, and the system returns to normal operation.

[0050] Optionally, the following steps are also included:

[0051] Determine the return water temperature of the wall-mounted boiler;

[0052] When the return water temperature of the wall-mounted boiler is greater than the overheat protection set temperature, the electric three-way valve is controlled to connect the gas wall-mounted boiler water channel, and the main water pump is controlled to operate intermittently.

[0053] By adopting the above technical scheme, when the heating efficiency of the solar heating device is too high, the electric three-way valve is controlled to connect the gas wall-mounted boiler water circuit to protect the gas wall-mounted boiler from overheating, so that the superheated water in the solar water circuit is not easy to affect the gas wall-mounted boiler, and through the intermittent operation of the main water pump, the heat in the wall-mounted boiler water circuit is dissipated through the heating terminal as soon as possible, thereby cooling the gas wall-mounted boiler.

[0054] Optionally, the following steps are also included:

[0055] Determine the heating return water temperature;

[0056] When the heating return water temperature is lower than the set heating temperature of the wall-mounted boiler, the gas wall-mounted boiler is controlled to start ignition and heating;

[0057] When the heating return water temperature is greater than the set flameout temperature of the wall-mounted boiler, the gas wall-mounted boiler is controlled to shut down and heating is suspended.

[0058] By adopting the above technical scheme, in the wall-mounted boiler heating mode, the switch of the gas wall-mounted boiler is controlled by judging the size of the heating return water temperature. When the heating return water temperature is high, the gas wall-mounted boiler is turned off in time. This can reduce the consumption of natural gas and save energy when the heating temperature meets the heating conditions; it can also avoid overheating caused by long-term ignition and heating of the gas wall-mounted boiler.

[0059] Optionally, the following steps are also included:

[0060] Select the heat usage mode: According to the mode selection data, select the required heating mode or hot water heating mode;

[0061] When a signal is received to select heating, the auxiliary three-way valve is controlled to be connected to the water path of the heating terminal; when a signal is received to select hot water heating, the auxiliary three-way valve is controlled to be connected to the water path of the hot water tank.

[0062] By adopting the above technical solution, when the user chooses hot water heating, the water path of the hot water tank is connected to the solar water path or the wall-mounted boiler water path through the auxiliary three-way valve, and the heat generated by the solar energy or the wall-mounted boiler is used to heat the domestic water in the hot water tank, thereby improving the optionality of heat utilization, allowing users to use the heat generated by the solar energy or the wall-mounted boiler for more purposes, further improving the utilization rate of solar energy.

[0063] In summary, the present application includes at least one of the following beneficial technical effects:

[0064] 1. The heating switching unit is used to switch between solar energy and gas-fired wall-mounted boiler heating modes. When the solar energy heating efficiency is insufficient, it is promptly switched to gas heating, so that the heating water can be heated more stably, thereby enabling the heating water mechanism to provide users with stable and efficient heating;

[0065] 2. Antifreeze the outdoor waterway of solar energy by setting up an antifreeze unit;

[0066] 3. Protect the gas wall-mounted boiler from overheating by setting an overheating protection unit.

[0067] It should be understood that the contents described in the Summary of the Invention are not intended to limit the key or important features of the embodiments of the present application, nor are they intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 It is a structural block diagram of the wall-mounted boiler and solar energy linkage energy-saving system in Example 1;

[0069] Figure 2 It is a block diagram of the connection structure between the wall-mounted boiler and the solar energy linkage energy-saving system in Example 1;

[0070] Figure 3 It is a structural schematic diagram of the wall-mounted boiler and solar energy linkage energy-saving device in Example 1;

[0071] Figure 4 This is a schematic diagram of the water path of the wall-mounted boiler and the solar energy linkage energy-saving device in Example 1 in the solar heating mode;

[0072] Figure 5 This is a schematic diagram of the water path of the wall-mounted boiler and the solar energy linkage energy-saving device in Example 1 when the wall-mounted boiler is in heating mode;

[0073] Figure 6 It is a schematic diagram of the water path of the wall-mounted boiler and the solar energy linkage energy-saving device in Example 1 in the solar energy heating mode;

[0074] Figure 7 This is a schematic diagram of the water path of the wall-mounted boiler and the solar energy linkage energy-saving device in Example 1 when the wall-mounted boiler is in heating mode;

[0075] Figure 8 It is a structural block diagram showing the coordination between the modules of the wall-mounted boiler and the solar energy linkage energy-saving system in Example 2;

[0076] Fig. 9 It is a structural block diagram of the wall-mounted boiler and solar energy linkage energy-saving system in Example 2;

[0077] Fig.10 It is a structural schematic diagram of the wall-mounted boiler and solar energy linkage energy-saving device in Example 2;

[0078] Fig.11 is a flowchart of the energy-saving method of the wall-mounted boiler and solar energy linkage in Example 3;

[0079] Fig.12is a flowchart of the energy-saving method of the wall-mounted boiler and solar energy linkage in Example 4;

[0080] Fig.13 is a flowchart showing the antifreeze step of the energy-saving method of the wall-mounted boiler and solar energy linkage in Example 5;

[0081] Fig.14 It is a general flow chart showing the overheat protection step of the energy-saving method of the wall-mounted boiler and solar energy linkage in Example 5;

[0082] Fig.15 It is a partial flow chart of the energy-saving method of wall-mounted boiler and solar energy linkage in Example 5;

[0083] Fig.16 is a flowchart showing the mode selection steps of the energy-saving method for wall-mounted boiler and solar energy linkage in Example 6;

[0084] Fig.17 is a flowchart showing the energy-saving steps of the wall-mounted boiler in the hot water heating mode of the wall-mounted boiler and solar energy linkage energy-saving method in Example 6;

[0085] Fig.18 It is a flowchart of the energy-saving method of the wall-mounted boiler and solar energy linkage in Example 6.

[0086] Description of the accompanying drawings: 1. Solar heating module; 11. Solar heating device; 111. Solar water tank; 112. Solar water outlet pipe; 1121. First filter; 113. Solar water return pipe; 114. Solar water pump; 12. Solar sensor; 13. Heating belt; 2. Gas wall-mounted boiler heating module; 21. Gas wall-mounted boiler; 211. Wall-mounted boiler water outlet pipe; 212. Wall-mounted boiler water return pipe; 22. Wall-mounted boiler sensor; 3. Main control module; 31. Heating switching unit; 311. Electric three-way valve; 312. Auxiliary three-way valve; 313. Main water pump; 32. Antifreeze unit; 33. Overheat protection unit; 34. Remote control unit; 4. Heating water mechanism; 41. Heating terminal; 411. Heating water inlet pipe; 412. Heating return pipe; 4121, second filter; 5, hot water mechanism; 51, hot water tank; 511, heating water inlet pipe; 512, heating water inlet pipe. DETAILED DESCRIPTION

[0087] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the following will be combined with the appended Figure 1-14 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0088] In order to facilitate the understanding of the embodiments of the present application, some terms involved in the embodiments of the present application are first explained.

[0089] T1: solar water tank temperature;

[0090] T2: return water temperature of the wall-mounted boiler;

[0091] T4: Heating return water temperature;

[0092] T5: hot water tank temperature;

[0093] t 11 : Solar heating set temperature difference;

[0094] t 12 : Solar heating set temperature difference;

[0095] t 211 : Wall-mounted boiler heating setting temperature;

[0096] t 212 : Set the flameout temperature for wall-mounted boiler heating;

[0097] t 221 : Wall-mounted boiler heating setting temperature;

[0098] t 222 : Set the flameout temperature for wall-mounted boiler heating;

[0099] t a : Antifreeze setting temperature;

[0100] t b : Overheat protection setting temperature.

[0101] Example 1

[0102] The embodiment of the present application discloses a wall-mounted boiler and solar energy linkage energy-saving system, which is applied to a wall-mounted boiler and solar energy linkage energy-saving device.

[0103] Reference Figure 1 , Figure 2 The wall-mounted boiler and solar energy linkage energy-saving system includes a solar heating module 1, a gas wall-mounted boiler heating module 2 and a main control module 3 for controlling the solar heating module 1 and the gas wall-mounted boiler heating module 2. The main control module 3 includes a heating switching unit 31 for stabilizing heating efficiency, an antifreeze unit 32 and an overheating protection unit 33.

[0104] The solar heating module 1 includes a solar heating device 11 for heating using solar energy, and a solar sensor 12, wherein the solar heating device 11 includes a solar water tank 111, and the solar sensor 12 is used to sense the solar water tank temperature T1 in the solar water tank 111. The gas wall-mounted boiler heating module 2 includes a gas wall-mounted boiler 21 for heating heating water and a wall-mounted boiler sensor 22 for sensing the wall-mounted boiler return water temperature T2 at the return water of the gas wall-mounted boiler 21.

[0105] Reference Figure 2 , Figure 3 The wall-mounted boiler and solar energy linkage energy-saving system also includes a heating mechanism 4 and a hot water mechanism 5; the heating mechanism 4 includes a heating terminal 41 and a heating return water sensor 42 arranged at the return water of the heating terminal 41, and the heating return water sensor 42 is used to sense the heating return water temperature T4; the hot water mechanism 5 includes a hot water tank 51 and a hot water tank sensor 52 arranged in the hot water tank 51, and the hot water tank sensor 52 is used to sense the hot water tank temperature T5.

[0106] The solar heating device 11 also includes a solar water outlet pipe 112 and a solar water return pipe 113 connected to the solar water tank 111; the gas wall-mounted boiler 21 is connected to the wall-mounted boiler water outlet pipe 211 and the wall-mounted boiler water return pipe 212; the inlet and outlet ends of the heating terminal 41 are respectively provided with a heating water return pipe 412 and a heating water inlet pipe 411; the hot water tank 51 is provided with a heating water inlet pipe 511 and a heating water return pipe 512 connected to each other;

[0107] The water channels of the solar heating device 11 and the gas wall-mounted boiler 21 are arranged in the same direction and in parallel, and the water channels of the heating terminal 41 and the hot water tank 51 are arranged in the same direction and in parallel; the connection between the solar water return pipe 113 and the wall-mounted boiler water return pipe 212 is connected to a main three-way valve for switching the heating mode, and the main three-way valve is also connected to the main pipeline; the connection between the heating water return pipe 412 and the heating water return pipe 512 is connected to a secondary three-way valve 312 for switching the heating mode, and the secondary three-way valve 312 is also connected to the main pipeline; a main water pump 313 is arranged on the main pipeline, and the main water pump 313 is an electrically controlled circulating water pump;

[0108] Thus, the parallel water path between the solar heating device 11 and the gas wall-mounted boiler 21 and the parallel water path between the heating terminal 41 and the hot water tank 51 are connected in series through the main pipeline. In this embodiment, the main three-way valve adopts an electric three-way valve 311, and the auxiliary three-way valve 312 is also an electrically controlled auxiliary three-way valve 312; the main three-way valve and the auxiliary three-way valve 312 can also be set as manual three-way valves, and the connection between the main three-way valve and the auxiliary three-way valve 312 can be manually controlled according to the user's choice.

[0109] The solar energy sensor 12 and the wall-mounted boiler sensor 22 are connected to the input end of the heating switching unit 31 , and the output end of the heating switching unit 31 is connected to the electric three-way valve 311 and the gas wall-mounted boiler 21 .

[0110] Reference Figure 4 , Figure 5 When the auxiliary three-way valve 312 connects the heating return pipe 412 and the main pipe, the heating efficiency of the solar heating device 11 decreases, and the temperature difference between the solar water tank temperature T1 sensed by the solar sensor 12 and the return water temperature T2 sensed by the wall-mounted boiler sensor 22 received by the heating switching unit 31 is less than the solar heating set temperature difference t 11 After that, the electric three-way valve 311 is controlled to connect the wall-mounted boiler return pipe 212 and the main pipeline, and the gas wall-mounted boiler 21 is controlled to start heating and enter the wall-mounted boiler heating mode;

[0111] When the heating efficiency of the solar heating device 11 is high, the temperature difference between the solar water tank temperature T1 sensed by the solar sensor 12 and the return water temperature T2 sensed by the wall-mounted boiler sensor 22 is greater than the solar heating set temperature difference t 11 After that, the electric three-way valve 311 is controlled to connect the solar water return pipe 113 and the main pipeline, and the gas wall-mounted boiler 21 is stopped to enter the solar heating mode.

[0112] Reference Figure 6 , Figure 7 When the auxiliary three-way valve 312 connects the heating return pipe 512 and the main pipe, the heating efficiency of the solar heating device 11 decreases, and the temperature difference between the solar water tank temperature T1 sensed by the solar sensor 12 and the return water temperature T2 sensed by the wall-mounted boiler sensor 22 received by the heating switching unit 31 is less than the solar heating set temperature difference t 12 After that, the electric three-way valve 311 is controlled to connect the wall-mounted boiler return pipe 212 and the main pipeline, and the gas wall-mounted boiler 21 is controlled to start heating and enter the wall-mounted boiler heating mode;

[0113] When the heating efficiency of the solar heating device 11 is high, the temperature difference between the solar water tank temperature T1 sensed by the solar sensor 12 and the return water temperature T2 sensed by the wall-mounted boiler sensor 22 is greater than the solar heating set temperature difference t 12 Afterwards, the electric three-way valve 311 is controlled to connect the solar water return pipe 113 and the main pipeline, and the operation of the gas wall-mounted boiler 21 is suspended to enter the solar heating mode.

[0114] By switching between solar heating and gas wall heating through the heating switching unit 31, it is possible to fully utilize the solar heating device and reduce the consumption of natural gas; it is also possible to switch to gas heating in time when the efficiency of solar heating is insufficient, so that the heating water can be heated more stably, thereby allowing the heating terminal 41 to provide users with stable and efficient heating.

[0115] Reference Figure 2 , Figure 3 In order to improve the antifreeze effect of the wall-mounted boiler and the solar energy linkage energy-saving system in cold climates, the solar water outlet pipe 112 and the solar water return pipe 113 located in the outdoor part are wrapped with a heating belt 13 on the outside, and the heating belt 13 is an electrically controlled heating belt 13; the input end of the antifreeze unit 32 is connected to the solar energy sensor 12, and the output end of the antifreeze unit 32 is connected to the heating belt 13;

[0116] When the pipe freezes, the antifreeze unit 32 receives the solar water tank temperature T1 sensed by the solar sensor 12 and is lower than the antifreeze setting temperature t a Afterwards, the antifreeze unit 32 controls the heating tape 13 to heat the solar water outlet pipe 112 and the solar water return pipe 113, so as to thaw the solar water outlet pipe 112 and the solar water return pipe 113, reduce the blockage in the solar water outlet pipe 112 and the solar water return pipe 113, and return the system to normal operation.

[0117] Preferably, the output end of the antifreeze unit 32 is also connected to the gas wall-mounted boiler 21 and the electric three-way valve 311; the antifreeze unit 32 receives the solar water tank temperature T1 sensed by the solar sensor 12 and is less than the antifreeze setting temperature t a Afterwards, the antifreeze unit 32 controls the electric three-way valve 311 to intermittently connect the wall-mounted boiler return pipe 212 and the solar return pipe 113, and controls the gas wall-mounted boiler 21 to start heating.

[0118] The water heated by the gas wall-mounted boiler 21 is thawed from the inside of the solar water outlet pipe 112 and the solar water return pipe 113, thereby improving the thawing efficiency and allowing the system to return to normal operation faster.

[0119] In order to protect the gas wall-mounted boiler 21 from overheating when the heating efficiency of the solar heating device 11 is too high, the input end of the overheating protection unit 33 is connected to the wall-mounted boiler sensor 22, and the output end of the overheating protection unit 33 is connected to the electric three-way valve 311 and the main water pump 313; the overheating protection unit 33 receives the wall-mounted boiler return water temperature T2 sensed by the wall-mounted boiler sensor 22 and is greater than the overheating protection set temperature t b When the electric three-way valve 311 is controlled to connect the water channel of the gas wall-mounted boiler 21, the main water pump 313 is controlled to operate intermittently.

[0120] Example 1 of the present application also discloses a wall-mounted boiler and solar energy linkage energy-saving device, which is applied to the above-mentioned wall-mounted boiler and solar energy linkage energy-saving system.

[0121] Reference Figure 3The control panel of the main control module 3 is arranged on the outside of the gas wall-mounted boiler 21, and the main control module 3 receives and displays the solar water tank temperature T1 sensed by the solar sensor 12 and the wall-mounted boiler return water temperature T2 sensed by the wall-mounted boiler sensor 22; thereby allowing the user to observe the solar water tank temperature T1 and the wall-mounted boiler return water temperature T2 more intuitively, and the user can independently select and control the operation of each component of the solar heating module 1 and the gas wall-mounted boiler heating module 2 through the main control module 3 indoors.

[0122] The solar water outlet pipe 112 is installed with a first filter 1121; the heating return water pipe 412 is provided with a second filter 4121; by providing the first filter 1121, impurities in the solar water tank 111 are not easily entered into the heating terminal 41 or the hot water tank 51, thereby reducing pollution and blockage caused by impurities; by providing the second filter 4121, impurities in the heating mechanism 4 are not easily entered into the water path of the gas wall-mounted boiler 21, thereby making the water path of the gas wall-mounted boiler 21 more unobstructed.

[0123] In order to further reduce the cross contamination between heating water and domestic water in the hot water tank 51, the heating water inlet pipe 511 and the heating water return pipe 512 are passed through the hot water tank 51 and arranged in the form of multiple groups of S-shaped bends in the hot water tank 51. The domestic water in the hot water tank 51 is heat exchanged through the S-shaped water pipes, and the water in the hot water tank 51 is heated without water circulation, thereby further reducing the contamination of the domestic water in the hot water tank 51.

[0124] Example 2

[0125] Reference Figure 8 , Fig. 9 Example 2 of the present application is another implementation of the wall-mounted boiler and solar energy linkage energy-saving device in Example 1. The difference from Example 1 is that the main control module 3 also includes a remote control unit 34 that allows the user to wirelessly remotely control heating switching, antifreeze control, overheating protection regulation and other operations.

[0126] In order to facilitate regional management and user use, the remote control unit 34 is controlled and connected with the heating switching unit 31, the antifreeze unit 32 and the overheating protection unit 33; Fig.10 The main control unit 34 is controlled and connected with the gas wall-mounted boiler 21, the electric three-way valve 311, the auxiliary three-way valve 312 and the main water pump 313 through the heating switching unit 31, the antifreeze unit 32 and the overheating protection unit 33;

[0127] The remote control unit 34 utilizes the GPRS communication function, and the user can perform remote query, control and parameter modification operations; at the same time, the comprehensive operating data of the heating control system, such as solar water temperature data, heating water temperature data, etc., can be uploaded to the server, and the user data in the applicable area can be counted, analyzed and the system can be improved.

[0128] The embodiment of the present application also discloses a wall-mounted boiler and solar energy linkage energy saving method.

[0129] Example 3

[0130] Reference Figure 3 , Fig.11 The energy-saving method of wall-mounted boiler and solar energy linkage includes the following steps:

[0131] S100: When receiving the power-on command, the solar energy sensor 12 and the wall-mounted boiler sensor 22 start to operate;

[0132] In this embodiment, the solar heating device 11 and the main water pump 313 start to operate.

[0133] S300: Determine the solar water tank temperature T1 and the wall-mounted boiler return water temperature T2;

[0134] Specifically, the heating switching unit 31 receives the solar water tank temperature T1 sensed by the solar sensor 12 and the wall-mounted boiler return water temperature T2 sensed by the wall-mounted boiler sensor 22 .

[0135] In this embodiment, step S300 includes step S311 and step S312;

[0136] S311: When the solar water tank temperature T1 minus the return water temperature of the wall-mounted boiler T2 is greater than the solar heating set temperature difference t 11 When the electric three-way valve 311 is connected to the solar water return pipe 112;

[0137] Step S311 also includes the following sub-steps:

[0138] S3110: transporting the high-temperature water in the solar water tank 111 to the heating terminal 41, thereby realizing the solar heating process;

[0139] The electric three-way valve 311 is controlled by the heating switching unit 31 to connect the water path of the solar water tank 111 with the water path of the heating terminal 41, so as to make full use of sustainable solar energy for heating and reduce the consumption of natural gas;

[0140] S312: When the solar water tank temperature T1 minus the return water temperature of the wall-mounted boiler T2 is less than the set temperature difference t for solar heating 11 When the electric three-way valve 311 is connected to the wall-mounted boiler return pipe 212;

[0141] Step S312 also includes the following sub-steps:

[0142] S3120: delivering the high-temperature water heated by the gas wall-mounted boiler 21 to the heating terminal 41, thereby realizing the heating process of the wall-mounted boiler;

[0143] By controlling the electric three-way valve 311 through the heating switching unit 31, the water path of the gas wall-mounted boiler 21 is connected with the water path of the heating terminal 41, so that when the efficiency of solar heating is insufficient, it is switched to gas heating in time, so that the heating terminal 41 can provide users with stable and efficient heating.

[0144] S700: When receiving the shutdown command, the solar heating device 11 and the wall-mounted boiler heating device 21 are shut down, and the main water pump 311 stops running.

[0145] Preferably, before step S700 is executed, step 300 and subsequent steps are continuously executed, that is, the temperature difference between the solar water tank temperature T1 and the wall-mounted boiler return water temperature T2 is continuously judged, so as to switch the heating mode in time according to the solar heating efficiency, and save natural gas energy as much as possible while stabilizing the heating efficiency.

[0146] Example 4

[0147] Reference Fig.12 , Example 4 of the present application is another implementation of the energy-saving method of wall-mounted boiler and solar energy linkage. The difference from Example 3 is that step S400 is further included between step S312 and step S3120, and step S400 includes the following sub-steps:

[0148] S410: Determine the heating return water temperature T4;

[0149] Specifically, the heating switching unit 31 receives the heating return water temperature T4 and determines the magnitude of the heating return water temperature T4.

[0150] Step S410 includes step S411 and step S412;

[0151] S411: When the heating return water temperature T4 is lower than the heating setting temperature t 211 When the gas wall-mounted boiler 21 starts to ignite and heat, the main water pump 313 continues to operate;

[0152] S412: When the heating return water temperature T4 is greater than the set flameout temperature t 212 When the gas wall-mounted boiler 21 is turned off, heating is suspended, and the main water pump 313 operates intermittently;

[0153] In the wall-mounted boiler heating mode, the switch of the gas wall-mounted boiler 21 is controlled by judging the size of the heating return water temperature T4. When the heating return water temperature T4 is relatively large, the gas wall-mounted boiler 21 is turned off in time. This can reduce the consumption of natural gas and save energy when the heating temperature meets the heating conditions; it can also avoid overheating caused by long-term ignition and heating of the gas wall-mounted boiler 21.

[0154] Example 5

[0155] Reference Fig.13 , Fig.14 , Example 5 of the present application is another implementation method of the energy-saving method of the wall-mounted boiler and solar energy linkage, which is different from Example 3 in that it also includes the following steps:

[0156] S500: When the solar water tank temperature T1 is lower than the antifreeze setting temperature t a When the electric three-way valve 311 is switched repeatedly, the solar water return pipe 113 or the wall-mounted boiler water return pipe 212 is intermittently connected to the main pipeline, and the gas wall-mounted boiler 21 is ignited for heating;

[0157] Optionally, step S500 may also be: when the solar water tank temperature T1 is lower than the antifreeze setting temperature t a When the heating belt 13 is controlled to start heating; the two antifreeze methods can be performed separately or simultaneously;

[0158] When the pipe freezes, the antifreeze unit 32 receives the solar water tank temperature T1 which is lower than the antifreeze setting temperature t a When the electric three-way valve 311 is controlled to intermittently connect the wall-mounted boiler return pipe 212 and the solar return pipe 113, and the gas wall-mounted boiler 21 is controlled to start heating; or the heating belt 13 is controlled to heat the solar outlet pipe 112 and the solar return pipe 113;

[0159] Specifically, step S300 continuously receives the solar water tank temperature T1, and step S500 continuously runs until the solar water tank temperature T1 is greater than or equal to the antifreeze setting temperature t a When the heating belt 13 stops heating, the electric three-way valve 311 and the gas wall-mounted boiler 21 resume normal operation; the antifreeze measures in step S500 include two types, namely, heating with the heating belt 13 and heating with the gas wall-mounted boiler 21. The two measures can be carried out simultaneously or one of them can be carried out selectively.

[0160] By utilizing the heating of the heating belt 13 or the water heated by the gas wall-mounted boiler 21 to thaw from the inside of the solar water outlet pipe 112 and the solar water return pipe 113, blockage in the solar water outlet pipe 112 and the solar water return pipe 113 can be reduced in cold weather or when the pipes are frozen, allowing the system to return to normal operation.

[0161] S600: When the return water temperature T2 of the wall-mounted boiler is greater than the overheat protection setting temperature t b When the electric three-way valve 311 is connected to the main pipeline and the wall-mounted boiler return pipe 212, the main water pump 313 operates intermittently;

[0162] Specifically, step S300 continuously receives the value of the return water temperature T2 of the wall-mounted boiler, and step S600 continuously runs until the return water temperature T2 of the wall-mounted boiler is less than or equal to the overheat protection setting temperature t b When , the main water pump 313 resumes normal operation;

[0163] When the heating efficiency of the solar heating device 11 is too high, the gas wall-mounted boiler 21 is protected from overheating through step S600, so that the superheated water in the solar water path is not easy to affect the gas wall-mounted boiler 21, and through the intermittent operation of the main water pump 313, the heat in the wall-mounted boiler water path is dissipated as quickly as possible through the heating terminal 41, thereby cooling the gas wall-mounted boiler 21.

[0164] In this embodiment, step S500 and step S600 can be executed one by one according to the climatic conditions after step S300, or they can be judged and executed at the same time, and the judgment order is not prioritized when executing simultaneously; preferably, anti-freeze or overheating protection can also be executed in the shutdown state after step S700 or before step S100.

[0165] This embodiment also includes step S301, which is executed after step S300. Step S301 is executed in parallel with step S500 and / or step S600.

[0166] S301: When the solar water tank temperature T1 is greater than or equal to the antifreeze setting temperature t a And the return water temperature T2 of the wall-mounted boiler is less than or equal to the overheat protection setting temperature t b , the main water pump 313 operates normally.

[0167] Reference Fig.15 Step S500 can also continue to run after step S301 is run. Specifically, step S500 runs after step S3120. In the wall-mounted boiler heating mode, the water pipes of the solar water tank 111 are protected from freezing, so that the solar heating module 1 is not prone to low-temperature failure.

[0168] Step S600 may also be continuously executed after step S301 is executed. Specifically, step S600 is executed after step S3110. In the solar heating mode, the gas wall-mounted boiler 21 is protected from overheating so that the gas wall-mounted boiler 21 is not prone to high temperature failure.

[0169] Example 6

[0170] Reference Fig.16 , Example 6 of the present application is another implementation method of the energy-saving method of the wall-mounted boiler and the solar energy linkage, which is different from Example 5 in that it also includes step S200; step S200 is used to perform heating or hot water heating according to the user's selection; step S200 includes the following sub-steps:

[0171] S210: Selecting a heating mode or a hot water heating mode according to the mode selection data;

[0172] Specifically, the heating switching unit 31 receives the mode selection data input by the user and selects the use mode of heat generated by solar energy or wall-mounted boiler heating; step S210 includes step S211 and step S212.

[0173] S211: When heating is selected, the auxiliary three-way valve 312 connects the heating return pipe 412 with the main pipe;

[0174] When the user chooses heating, the heating water circuit is connected to the solar water circuit or the wall-mounted boiler water circuit through the auxiliary three-way valve 312, and heating is performed by the heat generated by solar energy or the wall-mounted boiler; after step S211, step S311 or step S312 is executed according to the solar water tank temperature T1 and the wall-mounted boiler return water temperature T2.

[0175] S212: When hot water heating is selected, the auxiliary three-way valve 312 connects the heating return pipe 512 with the main pipe;

[0176] When the user selects hot water heating, the water path of the hot water tank is connected with the solar water path or the wall-mounted boiler water path through the auxiliary three-way valve 312, and the domestic water in the hot water tank is heated by the heat generated by the solar energy or the wall-mounted boiler; step S300 also includes step S321 and step S322, and after step S212, step S321 or step S322 is executed according to the solar water tank temperature T1 and the wall-mounted boiler return water temperature T2:

[0177] S321: When the solar water tank temperature T1 minus the return water temperature of the wall-mounted boiler T2 is greater than the set temperature difference t for solar heating 12 When the electric three-way valve 311 is connected to the solar water return pipe 112;

[0178] Step S321 also includes the following sub-steps:

[0179] S3210: transporting the high-temperature water in the solar water tank 111 to the hot water tank 51, thereby realizing the solar heating process;

[0180] The electric three-way valve 311 is controlled by the heating switching unit 31 to connect the water path of the solar water tank 111 with the water path of the hot water tank 51, so as to make full use of sustainable solar energy for heating and reduce the consumption of natural gas;

[0181] S322: When the solar water tank temperature T1 minus the return water temperature of the wall-mounted boiler T2 is less than the set temperature difference t for solar heating 12 When the electric three-way valve 311 is connected to the wall-mounted boiler return pipe 212;

[0182] Step S322 also includes the following sub-steps:

[0183] S3220: The high-temperature water heated by the gas wall-mounted boiler 21 is transported to the heating terminal 41, thereby realizing the heating process of the wall-mounted boiler;

[0184] The electric three-way valve 311 is controlled by the heating switching unit 31 to connect the water path of the gas wall-mounted boiler 21 with the water path of the hot water tank 51, so that when the efficiency of solar heating is insufficient, it is switched to gas heating in time, so that the hot water tank 51 can provide users with stable and efficient hot water.

[0185] Reference Fig.17 , Fig.18 In combination with Example 4, step S400 for saving natural gas may also be executed after step S322. After the user selects step S322 of the hot water heating mode, step S400 further includes sub-step S420.

[0186] S420: Determine the hot water tank temperature T5;

[0187] Specifically, the heating switching unit 31 receives the hot water tank temperature T5 and determines the magnitude of the hot water tank temperature T5.

[0188] Step S420 includes step S421 and step S422;

[0189] S421: When the hot water tank temperature T5 is lower than the set heating temperature t 221 When the gas wall-mounted boiler 21 starts to ignite and heat, the main water pump 313 continues to operate;

[0190] S422: When the hot water tank temperature T5 is greater than the set flameout temperature t 222 When the gas wall-mounted boiler 21 is turned off, heating is suspended, and the main water pump 313 operates intermittently;

[0191] In the wall-mounted boiler heating mode, the switch of the gas wall-mounted boiler 21 is controlled by judging the size of the hot water tank temperature T5. When the hot water tank temperature T5 is relatively high, the gas wall-mounted boiler 21 is turned off in time. This can reduce the consumption of natural gas and save energy when the heating temperature meets the heating conditions; it can also avoid overheating caused by long-term ignition and heating of the gas wall-mounted boiler 21.

[0192] Reference Fig.16 , Fig.18Preferably, referring to Example 5, step S500 may be further executed after step S3220. In this embodiment, step S500 adopts the heating method of the heating belt 13. In the wall-mounted boiler heating mode, the water pipes of the solar water tank 111 are protected from freezing, so that the solar heating module 1 is not prone to low-temperature failures; step S600 may be further executed after step S3210. In the solar heating mode, the gas wall-mounted boiler 21 is protected from overheating, so that the gas wall-mounted boiler 21 is not prone to high-temperature failures.

[0193] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0194] The specific embodiments of the present application are merely explanations of the present application and are not limitations of the present application. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present application, they are protected by the patent law.

[0195] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

Claims

1. A wall-mounted boiler and solar energy linkage energy-saving system, characterized in that: It comprises a solar heating device (11), a gas wall-mounted boiler (21) and a heating terminal (41); the water path of the solar heating device (11) and the water path of the gas wall-mounted boiler (21) are arranged in parallel, the water paths of the solar heating device (11) and the gas wall-mounted boiler (21) are connected in series with the heating terminal (41), and a main water pump (313) is arranged between the water paths of the solar heating device (11) and the gas wall-mounted boiler (21) and the heating terminal (41); A main three-way valve is provided at the return water connection between the solar heating device (11) and the gas wall-mounted boiler (21); the main three-way valve is an electric three-way valve (311); the electric three-way valve (311) is respectively connected to the return water path of the heating terminal (41), the solar heating device (11) and the return water path of the gas wall-mounted boiler (21); the electric three-way valve (311) is connected to the heating terminal (41); It also includes a hot water tank (51), which is connected in parallel with the water path of the heating terminal (41) and is connected in series with the water path of the solar heating device (11) and the gas wall-mounted boiler (21) in parallel; a secondary three-way valve (312) is provided at the connection between the hot water tank (51) and the return water path of the heating terminal (41), and the secondary three-way valve (312) is kept in communication with the water path of the solar heating device (11) and the gas wall-mounted boiler (21) in parallel; The solar heating device (11) comprises a solar water tank (111), wherein a solar sensor (12) for sensing the water temperature of the solar water tank (111) is arranged in the solar water tank (111); a wall-mounted boiler sensor (22) for sensing the temperature is arranged at the return water of the gas wall-mounted boiler (21); It also includes a main control module (3) for controlling the system, the main control module (3) including a heating switching unit (31) for controlling the solar heating device (11) and the gas wall-mounted boiler (21); The solar energy sensor (12) and the wall-mounted boiler sensor (22) are connected to the heating switching unit (31); the heating switching unit (31) is connected to the electric three-way valve (311) and the gas wall-mounted boiler (21); when the water temperature difference sensed by the solar energy sensor (12) and the wall-mounted boiler sensor (22) is lower than the heating set temperature difference, the heating switching unit (31) controls the electric three-way valve (311) to communicate with the gas wall-mounted boiler (21), and controls the gas wall-mounted boiler (21) to start heating; The solar sensor (12) is connected to the antifreeze unit (32), and the antifreeze unit (32) is connected to the heating belt (13); when the water temperature of the solar water tank (111) sensed by the solar sensor (12) is lower than a preset antifreeze temperature, the antifreeze unit (32) controls the heating belt (13) to start heating; Or the antifreeze unit (32) is connected to the electric three-way valve (311) and the gas wall-mounted boiler (21); when the water temperature of the solar water tank (111) sensed by the solar sensor (12) is lower than a preset antifreeze temperature, the antifreeze unit (32) controls the electric three-way valve (311) to intermittently connect the water path between the gas wall-mounted boiler (21) and the solar water return pipe (113), and controls the gas wall-mounted boiler (21) to start heating; The main control module (3) further comprises an antifreeze unit (32); the solar heating device (11) comprises a solar water outlet pipe (112) connected to the solar water tank (111), a solar water return pipe (113), and a heating belt (13) arranged outside the solar water outlet pipe (112) and the solar water return pipe (113); The main control module (3) further comprises an overheat protection unit (33), the overheat protection unit (33) being connected to the wall-mounted boiler sensor (22) and the main water pump (313); when the wall-mounted boiler return water temperature sensed by the wall-mounted boiler sensor (22) is greater than a preset overheat protection temperature, the overheat protection unit (33) controls the electric three-way valve (311) to connect to the water path of the gas wall-mounted boiler (21), and controls the main water pump (313) to operate intermittently.

2. The wall-mounted boiler and solar energy linkage energy-saving system according to claim 1 is characterized in that: The main control module (3) further comprises a remote control unit (34) having a wireless communication function, and the remote control unit (34) is connected to the heating switching unit (31).

3. The wall-mounted boiler and solar energy linkage energy-saving system according to claim 1 is characterized in that: The main control module (3) is mounted on the outer wall of the gas wall-mounted boiler (21); the main control module (3) receives the water temperature of the solar water tank (111) sensed by the solar sensor (12) and displays it.

4. The wall-mounted boiler and solar energy linkage energy-saving system according to claim 3 is characterized in that: The solar heating device further comprises a solar water outlet pipe (112) and a solar water return pipe (113) connected to the solar water tank (111); the gas wall-mounted boiler (21) is connected to a wall-mounted boiler water outlet pipe (211) and a wall-mounted boiler water return pipe (212); the solar water return pipe (113) and the wall-mounted boiler water return pipe (212) are connected to an electric three-way valve (311); the solar water outlet pipe (112) is installed with a first filter (1121); The inlet and outlet ends of the heating terminal (41) are respectively provided with a heating water return pipe (412) and a heating water inlet pipe (411); the heating water return pipe (412) is connected to the solar water return pipe (113) via a main pipe, and the heating water inlet pipe (411) is connected to the solar water outlet pipe (112) via a main pipe; and a second filter (4121) is provided on the heating water return pipe (412).

5. The wall-mounted boiler and solar energy linkage energy-saving system according to claim 4 is characterized in that: The hot water tank (51) is provided with a heat supply water inlet pipe (511) and a heat supply water return pipe (512) which are connected to each other; the heat supply water inlet pipe (511) is connected to the solar water outlet pipe (112) via a main pipe, and the heat supply water return pipe (512) is connected to the solar water return pipe (113) via a main pipe; the heat supply water inlet pipe (511) and the heat supply water return pipe (512) are passed through the hot water tank (51) and are arranged in the form of a plurality of groups of S-shaped bends in the hot water tank (51).

6. A wall-mounted boiler and solar energy linkage energy-saving method, applied to the wall-mounted boiler and solar energy linkage energy-saving system according to any one of claims 1 to 5, characterized in that: The following steps are involved: When receiving the power-on command, the solar energy sensor (12) and the wall-mounted boiler sensor (22) start to operate; Determining the magnitude of the solar water tank temperature sensed by the solar sensor (12) and the wall-mounted boiler return water temperature sensed by the wall-mounted boiler sensor (22); When the temperature difference between the solar water tank temperature and the return water temperature of the wall-mounted boiler is higher than the set temperature difference for heating, the electric three-way valve (311) is controlled to be connected to the solar water tank (111); When the temperature difference between the solar water tank temperature and the return water temperature of the wall-mounted boiler is lower than the set temperature difference for heating, the electric three-way valve (311) is controlled to be connected to the gas-fired wall-mounted boiler (21), and the gas-fired wall-mounted boiler (21) is controlled to start heating.

7. The wall-mounted boiler and solar energy linkage energy saving method according to claim 6 is characterized in that: The following steps are also included: Determine the size of the solar water tank temperature; When the temperature of the solar water tank is lower than the antifreeze setting temperature, the heating belt (13) is controlled to start heating, or the electric three-way valve (311) is controlled to intermittently connect the water path between the gas wall-mounted boiler (21) and the solar water return pipe (113) and control the gas wall-mounted boiler (21) to start heating.

8. The wall-mounted boiler and solar energy linkage energy saving method according to claim 6 is characterized in that: The following steps are also included: Determine the return water temperature of the wall-mounted boiler; When the return water temperature of the wall-mounted boiler is greater than the overheat protection set temperature, the electric three-way valve (311) is controlled to connect the water path of the gas wall-mounted boiler (21), and the main water pump (313) is controlled to operate intermittently.

9. The wall-mounted boiler and solar energy linkage energy saving method according to claim 6 is characterized in that: The following steps are also included: Determine the heating return water temperature; When the heating return water temperature is lower than the set heating temperature of the wall-mounted boiler, the gas wall-mounted boiler is controlled to start ignition and heating; When the heating return water temperature is greater than the set flameout temperature of the wall-mounted boiler, the gas wall-mounted boiler is controlled to shut down and heating is suspended.

10. The wall-mounted boiler and solar energy linkage energy saving method according to claim 6, characterized in that: The following steps are also included: Select the heat usage mode: According to the mode selection data, select the required heating mode or hot water heating mode; When a selection for heating is received, the auxiliary three-way valve (312) is controlled to be connected to the water path of the heating terminal (41); when a selection for hot water heating is received, the auxiliary three-way valve (312) is controlled to be connected to the water path of the hot water tank (51).

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