Intelligent energy storage electric heating system using constant-temperature water mixing technology for heating

Abstract

The invention relates to an intelligent energy storage electric heating system for heating by using a constant-temperature water mixing technology, belongs to the field of energy storage electric heating, and aims to solve the technical problems that the water outlet temperature fluctuation of the conventional constant-temperature water mixing circulation is large, and the water mixing proportion needs to be continuously and manually adjusted in use. A part of low-temperature return water after heat supply of the radiator is circulated back to the heat storage water tank through the return water diversion tee joint, and the low-temperature return water is uniformly distributed to the lower layer of the heat storage water tank through the lower water distributor installed in the inner opening of the water return pipe connector. The opening degree of the three-way water mixing valve is adjusted in real time according to a temperature signal from the water supply temperature measuring ball valve or a temperature sensing element in the three-way water mixing valve, and the temperature of mixed water is stabilized at the temperature needed by a room to be heated.

Description

Technical Field

[0001] The present invention is an intelligent energy storage electric heating system which utilizes a constant temperature water mixing technology for heating and belongs to the field of energy storage electric heating. Background Art

[0002] Electric heating is an efficient, safe, clean, and comfortable heating method. It is in line with the direction of my country's policies and meets the urgent needs of my country's haze control. Electric heating can be mainly divided into direct electric heating and electric thermal storage. Direct electric heating directly converts electrical energy into thermal energy for real-time heating. It consumes a lot of energy and is expensive, making it difficult to promote and use on a large scale. Electric thermal storage mainly includes solid thermal storage and liquid thermal storage. Both solid thermal storage and liquid thermal storage convert low-cost valley electricity into thermal energy and store it, allowing heat to be taken on demand when needed, which is economical and efficient. Among them, the liquid thermal storage process usually uses a hot water storage tank to generate and store high-temperature water. The high-temperature water in the hot water storage tank is then mixed with low-temperature water provided by an external water source according to the heating temperature required by the heating device to achieve the purpose of constant temperature water mixing.

[0003] Traditional constant temperature mixed water circulation often adopts manual adjustment of the water outlet valve on the heat storage tank to control the water outlet of hot water, and manually adjusts the water outlet valve on the external water source to control the water outlet of low-temperature water mixed with hot water, so as to achieve the mixing of cold and hot water. When the temperature of the mixed water reaches the heating temperature required by the heating device, the mixed water is introduced into the heating device to heat it. The outlet water temperature is greatly affected by the cold water inlet pressure and the hot water temperature. The outlet water temperature cannot be constant and fluctuates greatly. The user needs to manually adjust the proportion of the mixed water continuously during use, which is extremely inconvenient to use. The low temperature adjustment accuracy makes the mixed water temperature fluctuate. Summary of the Invention

[0004] In response to the deficiencies in the existing technology, the present application provides an intelligent energy storage electric heating system that uses constant temperature mixed water technology for heating to solve the above technical problems.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions: The present application provides an intelligent energy storage electric heating system that uses constant temperature water mixing technology for heating, including a water storage tank, a water mixing component, a heating and heat dissipation piping system, and a room temperature measuring point. The water mixing component includes a three-way return water valve, a heating circulation pump, and a return water diversion tee. The heating and heat dissipation piping system includes a heating circulation pipe, a radiator, a water supply temperature measuring ball valve, a return water temperature measuring ball valve, and a filter valve.

[0006] A water supply pipe interface is provided on the side wall of the hot water storage tank, one end of the water supply pipe interface located outside the hot water storage tank is used to connect to the high-temperature water supply pipe, and one end of the water supply pipe interface located inside the hot water storage tank is used to connect to the upper water distributor, and a hot water shut-off valve is provided on the high-temperature water supply pipe;

[0007] A return water pipe interface is provided on the side wall of the hot water storage tank, one end of the return water pipe interface located outside the hot water storage tank is used to connect to the low-temperature return water pipe, and one end of the return water pipe interface located inside the hot water storage tank is used to connect to the lower water distributor. The end of the low-temperature return water pipe away from the return water pipe interface on the hot water storage tank is connected to the return water diversion tee, and a cold water shut-off valve is provided on the low-temperature return water pipe;

[0008] Furthermore, when the water supply pipe interface is lower than the normal operating water level in the hot water storage tank, the upper water distributor has a special structure. The end of the upper water distributor connected to the water supply pipe interface first extends vertically upward, and then extends horizontally when the water intake height of the upper water distributor reaches below the normal operating water level, thereby ensuring that the hot water entering the upper water distributor is high-temperature water from the upper layer of the hot water storage tank.

[0009] Furthermore, a plurality of water distribution holes are distributed on the horizontal side surfaces of the pipe walls of the upper water distributor and the lower water distributor. The water distribution holes located on the side wall of the upper water distributor are used to solve the problem of water temperature dead corners in the hot water storage tank, that is, to avoid the generation of a horizontal temperature gradient of the stored water. The water distribution holes on the side wall of the lower water distributor are used to prevent the water temperature stratification in the hot water storage tank from being destroyed, that is, to evenly distribute the low-temperature water flowing back to the hot water storage tank through the low-temperature return pipe to the same horizontal layer, thereby forming a more stable vertical temperature gradient of the stored water.

[0010] A heating pipe interface is provided on the side wall of the hot water storage tank, and the heating pipe interface is used to install a heating pipe for heating the water in the hot water storage tank;

[0011] A water inlet pipe interface is provided on the side wall of the hot water storage tank. One end of the water inlet pipe interface is located outside the hot water storage tank and is used to connect to a water inlet pipe. The water inlet pipe is used to connect to an external water source. A water inlet solenoid valve is provided on the water inlet pipe. The water inlet solenoid valve controls water to be replenished from the external water source into the system when needed.

[0012] An overflow pipe interface is provided on the upper part of the side wall of the hot water storage tank. One end of the overflow pipe interface is located outside the hot water storage tank and is used to connect to the overflow pipe. The overflow pipe is used to discharge water in the hot water storage tank that exceeds the designed water level.

[0013] A drain pipe interface is provided at the lower portion of the side wall of the hot water storage tank. One end of the drain pipe interface is located outside the hot water storage tank and is used to connect to a drain pipe. The drain pipe is used to discharge impurities deposited at the bottom of the hot water storage tank and to discharge the water in the hot water storage tank during system maintenance. An overflow drain tee is provided on the drain pipe. The side interface of the overflow drain tee is connected to the overflow pipe. A drain valve is provided on the drain pipe between the hot water storage tank and the overflow drain tee. The end of the drain pipe is led to an external location where sewage is allowed to be discharged.

[0014] A water level electrode interface is provided on the side wall of the hot water storage tank, and the water level electrode interface is used to install a water level electrode for judging whether the water level in the hot water storage tank meets the normal operating requirements;

[0015] A temperature measuring point interface is provided on the side wall of the hot water storage tank, and the temperature measuring point interface is used to install a heat storage temperature measuring point for measuring the temperature of the water in the hot water storage tank;

[0016] The outer surface of the heat storage tank is provided with a heat-insulating material for heat preservation to reduce heat dissipation to the outside;

[0017] The opening of the three-way mixing valve is controlled by a motor or by expansion control of a temperature sensing element, and the three-way mixing valve is provided with a hot water inlet, a cold water inlet and a mixed water outlet;

[0018] The cold water inlet is connected to the return water diversion tee through a low-temperature water supply pipe, and the hot water inlet is connected to the end of the high-temperature water supply pipe away from the water supply pipe interface on the hot water storage tank, for introducing the hot water heated by the heating pipe in the hot water storage tank, and the mixed water outlet is connected to the heating circulation pump;

[0019] One end of the heating circulation pipeline is connected to the outlet of the heating circulation pump away from the end of the mixing valve, passes through the room to be heated, and the other end is connected to the end of the return water diversion tee away from the hot water storage tank. The radiator is a plate or pipe that dissipates heat into the room to be heated. The radiator is arranged on a section of the heating circulation pipeline located in the room to be heated.

[0020] The water supply temperature measuring ball valve is a ball valve equipped with a temperature measuring point and having the function of measuring the temperature of the mixed water supplied from the heating circulation pump. The ball valve is arranged near one end of the heating circulation pipeline close to the outlet of the heating circulation pump.

[0021] The return water temperature measuring ball valve is a ball valve equipped with a temperature measuring point and capable of measuring the temperature of water flowing back from the radiator. The ball valve is arranged near one end of the heating circulation pipeline close to the return water diversion tee. The filter valve is arranged on the heating circulation pipeline between the return water diversion tee and the return water temperature measuring ball valve and is used to filter and collect foreign particles in the heating circulation pipeline.

[0022] The room temperature measuring point is an element arranged in the room to be heated for measuring the indoor temperature of the room to be heated, and the temperature signal is transmitted via a wired or wireless manner.

[0023] The intelligent energy storage electric heating system provided by the present application utilizes constant temperature water mixing technology for heating. The water entering the heat storage tank from the water inlet pipe is heated by a heating pipe located in the heat storage tank. The high-temperature water supply pipe connected to the water supply pipe interface of the heat storage tank is connected to the hot water inlet of the three-way mixing valve in the water mixing assembly. The hot water is evenly taken out from the upper layer of the heat storage tank through the upper water distributor installed at the inner mouth of the water supply pipe interface of the heat storage tank. The low-temperature return water pipe connected to the return water pipe interface of the heat storage tank is connected to the heating circulation pipeline through the return water diversion tee. The return water from the radiator in the room to be heated is connected, and a part of the low-temperature return water after heating is circulated back to the hot water storage tank, and is evenly distributed to the lower layer of the hot water storage tank through the lower water distributor installed at the inner mouth of the return pipe interface of the hot water storage tank, and the cold water inlet of the three-way mixing valve in the water mixing assembly is connected with the return water diversion tee, and the other part of the low-temperature return water after heating from the radiator in the room to be heated entering from the cold water inlet is mixed with the hot water heated by the heating pipe in the hot water storage tank entering from the hot water inlet of the three-way mixing valve, and is passed through the water supply temperature measuring ball valve or The temperature sensing element in the three-way mixing valve adjusts the opening of the three-way mixing valve in real time, so that the mixed water temperature is stabilized at the heating temperature required by the room to be heated. Finally, the constant temperature mixed water is introduced into the radiator to heat the room to be heated through the heating circulation pump. It can not only effectively and accurately adjust the mixed water temperature in real time according to the heating temperature required by the room to be heated, but also avoid the constant manual adjustment of the mixed water ratio, which is extremely inconvenient to use. The low temperature adjustment accuracy makes the mixed water temperature fluctuate. The cold water inlet of the three-way mixing valve is connected with the heating circulation pipeline through the return water diversion tee, so as to achieve the purpose of recycling the return water after the heating of the radiator in the heating room is completed, thereby saving water resources. The water distributor installed in the hot water storage tank utilizes the density difference of water at different temperatures to maximize the stability of the temperature of the hot water output from the hot water storage tank, reducing the difficulty of stabilizing the mixed water temperature of the three-way mixing valve, and improving the temperature of the stored water. While ensuring the heat storage capacity, the volume of the hot water storage tank is reduced, saving floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1A schematic structural diagram of an intelligent energy storage electric heating system for heating using constant temperature mixed water technology provided in an embodiment of the present application.

[0026] Figure 2 Schematic diagram of the heat storage water tank structure of the intelligent energy storage electric heating system using constant temperature mixed water technology for heating provided in an embodiment of the present application.

[0027] Figure 3 Schematic diagram of the upper and lower water distributor structures of the intelligent energy storage electric heating system that uses constant temperature mixed water technology for heating provided in an embodiment of the present application.

[0028] In the figure: 100, hot water storage tank; 101, water supply pipe interface; 102, return pipe interface; 103, heating pipe interface; 104, water inlet pipe interface; 105, sewage pipe interface; 106, overflow pipe interface; 107, water level electrode interface; 108, temperature measuring point interface; 109, heating pipe; 1101, upper water distributor; 1102, lower water distributor; 1103, water distribution hole; 111, water level electrode; 112, thermal storage temperature measuring point; 201, high-temperature water supply pipe; 202, hot water stop valve; 300, three-way mixing valve; 301, hot Water inlet; 302, cold water inlet; 303, mixed water outlet; 400, heating circulation pump; 500, heating circulation pipeline; 501, water supply temperature measuring ball valve; 502, return water temperature measuring ball valve; 503, filter valve; 600, radiator; 700, room temperature measuring point; 801, low-temperature water supply pipe; 802, low-temperature return pipe; 803, cold water stop valve; 804, return water diversion tee; 901, overflow pipe; 902, water inlet pipe; 903, water inlet solenoid valve; 904, drain valve; 905, drain pipe; 906, overflow drain tee. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0030] The present application provides an intelligent energy storage electric heating system that uses constant temperature water mixing technology for heating, including a water storage tank 100, a water mixing component, a heating and heat dissipation pipeline system and a room temperature measuring point 700. The water mixing component includes a three-way return water valve 300, a heating circulation pump 400 and a return water diversion tee 804. The heating and heat dissipation pipeline system includes a heating circulation pipeline 500, a radiator 600, a water supply temperature measuring ball valve 501, a return water temperature measuring ball valve 502, and a filter valve 503.

[0031] Specifically, the outer surface of the hot water storage tank 100 is provided with insulation material for insulation to reduce outward heat dissipation; a water inlet pipe interface 104 is provided on the side wall of the hot water storage tank 100. The water inlet pipe interface 104 is located at one end outside the hot water storage tank 100 and is used to connect to the water inlet pipe 902. The water inlet pipe 902 is connected to an external water source. A heating pipe interface 103 is provided on the side wall of the hot water storage tank 100. The heating pipe interface 103 is installed with a heating pipe 109 for heating the water in the hot water storage tank 100. The water inlet pipe is provided with a water inlet solenoid valve, which controls the replenishment of water from the external water source into the system when needed; The external water source is either room temperature water or cold water. The heating pipe 109 utilizes low-cost off-peak electricity to heat the water entering the hot water storage tank 100 from the water inlet pipe 902. Since the hot water in the hot water storage tank 100 must be mixed with the low-temperature return water to stabilize the temperature of the mixed water at the desired heating temperature for the room to be heated, the temperature of the hot water in the hot water storage tank 100 after being heated by the heating assembly is typically higher than the desired heating temperature for the room to be heated. This allows for real-time adjustment based on the varying heating temperatures required by different rooms to be heated, enhancing the wide applicability of the constant temperature mixed water circulation system. Furthermore, a water inlet solenoid valve 903 is provided on the water inlet pipe 902. When water needs to be added to the hot water storage tank 100, the water inlet solenoid valve 903 is opened; otherwise, the water inlet solenoid valve 903 remains closed.

[0032] The side wall of the hot water storage tank 100 is provided with a water supply pipe interface 101 and a return pipe interface 102. Specifically, the end of the water supply pipe interface 101 located outside the hot water storage tank 100 is connected to the high-temperature water supply pipe 201, the end of the water supply pipe interface 101 located inside the hot water storage tank is connected to the upper water distributor 1101, the end of the return pipe interface 102 located outside the hot water storage tank 100 is connected to the low-temperature return water pipe 802, and the end of the return pipe interface 102 located inside the hot water storage tank 100 is connected to the lower water distributor 1102. When the water supply pipe interface 101 is lower than When the water level in the hot water storage tank 100 is normally operated, the upper water distributor 1101 has a special structure. The end of the upper water distributor 1101 connected to the water supply pipe interface 101 first extends vertically upward, and then extends horizontally when the water intake height of the upper water distributor 1101 reaches below the normal operating water level, ensuring that the hot water entering the upper water distributor 1101 is high-temperature water from the upper layer of the hot water storage tank 100. There are several water distribution holes 1103 distributed on the horizontal side of the pipe wall of the upper water distributor 1101 and the lower water distributor 1102. The water distribution hole 1103 structure on the flat side solves the problem of water temperature dead angle in the hot water storage tank 100, that is, avoids the generation of horizontal temperature gradient of hot water storage water. The lower water distributor 1102 and the water distribution hole 1103 structure on the horizontal side prevent the water temperature stratification in the hot water storage tank 100 from being destroyed, that is, the low-temperature water flowing back to the hot water storage tank 100 through the low-temperature return pipe 802 is evenly distributed to the same horizontal layer, forming a more stable vertical temperature gradient of hot water storage water; a hot water stop valve 202 is provided on the high-temperature water supply pipe 201, and a hot water stop valve 202 is provided on the low-temperature return pipe 802. A cold water shut-off valve 803 is provided. The hot water shut-off valve 202 and the cold water shut-off valve 803 can isolate the hot water storage tank 100 from the heating and heat dissipation piping system during system maintenance. The end of the low-temperature return water pipe 802 away from the return water pipe interface 102 on the hot water storage tank 100 is connected to the return water diversion tee 804. The low-temperature return water after heating the room to be heated is diverted through the return water diversion tee 804. One part flows into the mixing water component through the low-temperature water supply pipe 801, and the other part circulates back to the hot water storage tank 100 through the low-temperature return water pipe 802.

[0033] The three-way mixing valve 300 is provided with a hot water inlet 301, a cold water inlet 302 and a mixed water outlet 303; specifically, the opening of the three-way mixing valve 300 is controlled by a motor or by expansion control of a temperature sensing element, the cold water inlet 302 is connected to the return water diversion tee 804 through a low-temperature water supply pipe 801, the hot water inlet 301 is connected to the water supply pipe interface 101 provided on the side wall of the hot water storage tank 100 through a high-temperature water supply pipe 201, the mixed water outlet 303 is connected to the heating circulation pump 400, and the cold water inlet 302 is connected to the return water diversion tee 804 through a low-temperature water supply pipe 801, and the hot water inlet 301 is connected to the water supply pipe interface 101 provided on the side wall of the hot water storage tank 100 through a high-temperature water supply pipe 201. A portion of the low-temperature return water after heating the room to be heated that is introduced into 02 is mixed with the hot water heated by the heating pipe 109 in the heat storage tank 100 that is introduced into 301 from the hot water inlet, and the opening of the three-way mixing valve 300 is adjusted in real time through the temperature sensing element in the water supply temperature measuring ball valve 501 or the three-way mixing valve 300 to stabilize the mixed water temperature at the heating temperature required for the room to be heated. Finally, the constant temperature mixed water is supplied through the heating circulation pump 400, which provides the power for the mixed water circulation.

[0034] One end of the heating circulation pipe 500 is connected to the outlet of the heating circulation pump 400 away from the end of the three-way mixing valve 300, passes through the room to be heated, and the other end is connected to the end of the return water diversion tee 804 away from the hot water storage tank 100. The radiator 600 is a plate or pipe that dissipates heat to the room to be heated and is installed on a section of the heating circulation pipe 500 located in the room to be heated; the water supply temperature measuring ball valve 501 is installed near the end of the heating circulation pipe 500 close to the outlet of the heating circulation pump 400. There is a temperature measuring point with the function of measuring the temperature of the mixed water supplied from the heating circulation pump 400. The return water temperature measuring ball valve 502 is arranged near one end of the heating circulation pipeline 500 close to the return water diversion tee 804. A temperature measuring point is installed with the function of measuring the temperature of the water flowing back from the room to be heated after heating. A filter valve is provided on the heating circulation pipeline 500 between the return water diversion tee 804 and the return water temperature measuring ball valve 502, which is used to filter and collect foreign particles in the heating circulation pipeline 500.

[0035] A room temperature measuring point is provided in the room to be heated, which is used to measure the indoor temperature of the room to be heated and transmit the temperature signal via wired or wireless means. When the indoor temperature of the room to be heated is higher than a preset value, the mixed water temperature is adjusted downward and the stop working time of the heating circulation pump 400 is increased. When the indoor temperature of the room to be heated is lower than the preset value, the mixed water temperature is adjusted upward and the stop working time of the heating circulation pump 400 is reduced. The opening of the three-way mixing water valve 300 is adjusted in real time through the temperature sensing element in the water supply temperature measuring ball valve 501 or the three-way mixing water valve 300, so that the mixed water temperature is stabilized at the heating temperature required for the room to be heated. Not only can the mixed water temperature be adjusted in real time, effectively and accurately according to the heating temperature required for the room to be heated, but also the constant manual adjustment of the mixed water ratio is avoided, which is extremely inconvenient to use. The problem of fluctuating mixed water temperature due to low temperature regulation accuracy is solved, and the cold water inlet 502 of the three-way mixing valve 300 is connected to the heating circulation pipeline 500 through the return water diversion tee 804, so as to achieve the purpose of recycling the return water after the radiator in the heating room is heated, thereby saving water resources; the upper water distributor 1101 and the lower water distributor 1102 arranged in the hot water storage tank 100, and the water distribution hole 1103 structure on the horizontal side of the upper water distributor 1101 and the lower water distributor 1102 utilize the density difference of water at different temperatures to keep the temperature of the hot water output from the hot water storage tank 100 stable to the maximum extent, reduce the difficulty of stabilizing the mixed water temperature of the three-way mixing valve 300, and improve the temperature of the stored water, reduce the volume of the hot water storage tank 100 while ensuring the heat storage capacity, and save floor space.

[0036] The upper part of the side wall of the hot water storage tank 100 is provided with an overflow pipe interface 106, and the lower part is provided with a sewage pipe interface 105; specifically, the overflow pipe interface 106 is connected to the overflow pipe 901 at one end outside the hot water storage tank 100, and the water exceeding the design water level in the hot water storage tank 100 is discharged through the overflow pipe 901, and the sewage pipe interface 105 is connected to the sewage pipe 905 at one end outside the hot water storage tank 100, so that the impurities deposited at the bottom of the hot water storage tank 100 and the water stored during system maintenance can be discharged. The water in the hot water tank 100 is discharged through a drain pipe 905. An overflow drain tee 906 is provided on the drain pipe 905. The side interface of the overflow drain tee 906 is connected to the overflow pipe 901. A drain valve 904 is provided on the drain pipe 905 between the hot water tank 100 and the overflow drain tee 906. When drainage is required, the drain valve 904 is opened. Otherwise, the drain valve 904 is in a closed state, and the end of the drain pipe 905 is led to an external place where drainage is allowed.

[0037] The side wall of the hot water storage tank 100 is provided with a water level electrode interface 107 and a temperature measuring point interface 108 for installing system protection components. Specifically, the water level electrode interface 107 is installed with a water level electrode 111. The water level electrode 111 judges whether the water level in the hot water storage tank 100 meets the normal operating requirements. When the water level in the hot water storage tank 100 does not meet the normal operating requirements, the water inlet solenoid valve 903 is opened to replenish water in the hot water storage tank 100. Before the water level in the hot water storage tank 100 meets the normal operating requirements, the heating pipe 109 and the heating circulation pump 400 are stopped to avoid the device from In case the equipment is damaged, the temperature measuring point interface 108 is installed with a heat storage temperature measuring point 112, which measures the temperature of the water in the hot water tank 100. When the temperature of the water in the hot water tank 100 is lower than the lower limit of the hot water temperature in the hot water tank 100 and the time is within the heating period, the heating pipe 109 is allowed to start to heat the water in the hot water tank 100. When the temperature of the water in the hot water tank 100 reaches the upper limit of the hot water temperature in the hot water tank 100, the heating pipe 109 is stopped to prevent the water in the hot water tank 100 from exceeding the allowable temperature.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An intelligent energy storage electric heating system using constant temperature mixed water technology for heating, characterized by: The invention comprises a heat storage tank (100), a water mixing component, a heating and heat dissipation pipeline system and a room temperature measuring point (700), wherein the water mixing component comprises a three-way return water valve (300), a heating circulation pump (400) and a return water diversion three-way valve (804), and the heating and heat dissipation pipeline system comprises a heating circulation pipeline (500), a radiator (600), a water supply temperature measuring ball valve (501), a return water temperature measuring ball valve (502) and a filter valve (503); the heat storage tank (100) is connected to the water supply pipe (104) by a heating pipe (109) located in the water storage tank (100). The water in the water storage tank (100) is heated, the high-temperature water supply pipe (201) connected to the water supply pipe interface (101) of the water storage tank (100) is communicated with the hot water inlet (301) of the three-way mixing valve (300) in the water mixing assembly, and hot water is evenly taken out from the upper layer of the water storage tank (100) through the upper water distributor (1101) installed at the inner port of the water supply pipe interface (101) of the water storage tank (100), and the low-temperature return pipe (802) connected to the return pipe interface (102) of the water storage tank (100) is communicated with the heating circulation pipeline (500). After the return water is heated by the radiator (600) in the room to be heated, a portion of the low-temperature return water is circulated back to the hot water storage tank (100) through the return water diversion tee (804), and is evenly distributed to the lower layer of the hot water storage tank (100) through the lower water distributor (1102) installed at the inner port of the return water pipe interface (102) of the hot water storage tank (100). The cold water inlet (302) of the three-way mixing valve (300) in the water mixing assembly is connected to the return water diversion tee (804), and the radiator (600) in the room to be heated is heated by the cold water inlet (302). The other part of the low-temperature return water is mixed with the hot water in the hot water storage tank (100) and heated by the heating pipe (109) and introduced from the hot water inlet (301) of the three-way mixing valve (300). The opening of the three-way mixing valve (300) is adjusted in real time by the water supply temperature measuring ball valve (501) or the temperature sensing element in the three-way mixing valve (300) to stabilize the temperature of the mixed water at the heating temperature required for the room to be heated. Finally, the constant temperature mixed water is introduced into the radiator (600) through the heating circulation pump (400) to heat the room to be heated.

2. The intelligent energy storage electric heating system using constant temperature mixed water technology for heating according to claim 1, characterized in that: A plurality of water distribution holes (1103) are distributed on the horizontal side surfaces of the pipe walls of the upper water distributor (1101) and the lower water distributor (1102). When the water supply pipe interface (101) is lower than the normal operating water level in the hot water storage tank (100), the end of the upper water distributor (1101) connected to the water supply pipe interface (101) first extends vertically upward, and then extends horizontally when the water intake height of the upper water distributor (1101) reaches below the normal operating water level.

3. The intelligent energy storage electric heating system using constant temperature mixed water technology for heating according to claim 1, characterized in that: The low-temperature return water after heating the room to be heated is divided through the return water diversion tee (804), with one part flowing into the water mixing component through the low-temperature water supply pipe (801), and the other part circulating back to the hot water storage tank (100) through the low-temperature return water pipe (802).

4. The intelligent energy storage electric heating system using constant temperature water mixing technology for heating according to claim 1, characterized in that: The water supply temperature measuring ball valve (501) is equipped with a temperature measuring point and has the function of measuring the temperature of the mixed water supplied from the heating circulation pump (400). The return water temperature measuring ball valve (502) is equipped with a temperature measuring point and has the function of measuring the temperature of the water flowing back from the room to be heated after heating.

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