Air source heat pump hot water system and control method thereof

Abstract

The application discloses an air source heat pump hot water system and a control method thereof, which comprises a water storage tank, a heat pump unit, a pipeline system, a sensing module and a control module. The water storage tank comprises a first water tank and a second water tank which are arranged at intervals, and the inside of the second water tank is divided into a heat preservation part and a heating part by a heat preservation isolation plate. The heat preservation part and the heating part are also communicated through a circulating pipeline. The water storage tank is divided into the first water tank and the second water tank, the inside of the second water tank is divided into the heating part and the heat preservation part, and then the control system arranged in the air source heat pump hot water system is matched, so that water with different temperatures is stored and heated respectively, and the water temperature of the air source heat pump is better controlled.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air source heat pump hot water system, and particularly relates to an air source heat pump hot water system and a control method thereof. BACKGROUND

[0002] The air source heat pump hot water system is widely applied to household hot water and heating, commercial hot water and heating, distributed central heating, livestock breeding heating, constant temperature aquaculture, agricultural second greenhouse constant temperature field, industrial and agricultural drying field, and campus hot water and heating fields, and the heating efficiency of the air source heat pump directly affects the energy-saving operation of the hot water system.

[0003] The working principle of the traditional air source heat pump hot water system heating and water replenishment is as follows: when the water temperature in the heat preservation water tank decreases to a certain value, the circulating water pump is started to pump the water in the heat preservation water tank into the air source heat pump for heating, and when the water temperature rises to a certain value, the circulating water pump is stopped to stop heating; when the liquid level in the heat preservation water tank decreases to a certain value, the water replenishment electric valve is opened to start water replenishment, and when the liquid level rises to a certain value, the water replenishment electric valve is closed to stop water replenishment.

[0004] Defects of the heating mode of the traditional air source heat pump hot water system:

[0005] 1. Since the lower limit of the water temperature in the heat preservation water tank cannot be too low, otherwise the hot water supply temperature is affected, the water inlet temperature of the air source heat pump is basically maintained at about 50 DEG C, the lower end difference (temperature difference between the high-temperature side medium outlet and the low-temperature side medium inlet) of the air source heat pump is reduced, and the heating efficiency of the air source heat pump is reduced.

[0006] 2. Since the hot water in the heat preservation water tank is continuously supplied outward, and cold water is continuously replenished into the heat preservation water tank, the hot water temperature is reduced, and the stability of the hot water supply temperature is affected. SUMMARY

[0007] The present application provides an air source heat pump hot water system and a control method thereof, which can effectively solve the above problems.

[0008] The present application is implemented as follows:

[0009] An air source heat pump hot water system, comprising

[0010] A water storage tank, the water storage tank comprises a first water tank and a second water tank arranged at intervals, and the inside of the second water tank is divided into a heat preservation part and a heating part by a heat preservation isolation plate;

[0011] A heat pump unit, the heat pump unit is used for pumping and heating the stored water in the first water tank or the heating part, or pumping the water after heating into the first water tank or the heat preservation part;

[0012] The piping system includes a circulation pipeline connecting the insulation section and the heating section. The first water tank is connected to the municipal water supply system via a water replenishment pipeline. The insulation section is connected to the water user via a water supply pipeline. The heating section is connected to the water user via a return pipeline. The first water tank and the insulation section are connected in parallel to the outlet of the heat pump unit to form a hot water supply pipeline. The first water tank and the heating section are connected in parallel to the inlet of the heat pump unit to form a pipeline to be heated. The circulation pipeline is connected in parallel to a branch of the pipeline to be heated between the heat pump unit and the insulation section.

[0013] The sensing module includes a first temperature sensor disposed on the main outlet pipe of the heat pump unit, a second temperature sensor disposed in the insulation section, and liquid level sensors disposed in the first water tank, the heating section, and the insulation section respectively. The water temperature data acquisition time of the first temperature sensor and the second temperature sensor is the same, and the water level data acquisition time of the plurality of liquid level sensors is the same.

[0014] The control module includes a control module and several solenoid valves for controlling the opening and closing of pipelines. The solenoid valves are respectively installed on branches of the hot water supply pipeline, branches of the pipeline to be heated, the return water pipeline, the supply water pipeline, the make-up water pipeline, and the circulation pipeline. The control module is communicatively connected to the sensing module and the solenoid valves. The control module sends corresponding control signals to each solenoid valve according to the temperature / water level data collected by the sensing module and various preset threshold parameters in the control module. The solenoid valves open or close according to the received control signals.

[0015] As a further improvement, the liquid level sensor includes a water replenishment level sensor disposed in the first water tank, a water return level sensor disposed in the heating section, and a water supply level sensor disposed in the heat preservation section.

[0016] The control module is equipped with a water replenishment level threshold, a water return level threshold, a water supply level threshold, a first temperature threshold, and a second temperature threshold.

[0017] The water level sensor collects real-time water level data in the first water tank and sends the collected water level data to the control module. When the control module calculates and compares the water level data and finds that it is lower or higher than the water level threshold, the control module sends a corresponding control signal to the solenoid valve on the water supply pipeline. The solenoid valve opens or closes according to the received control signal.

[0018] The water supply level sensor collects real-time water level data within the insulation section and sends the collected water level data to the control module. Simultaneously, the water supply temperature sensor collects water temperature data on the main branch of the hot water supply pipeline and sends the collected water temperature data to the control module. When the control module calculates and compares whether the water level data is lower or higher than the water supply level threshold and whether the water temperature data is lower or higher than the first temperature threshold, the control module sends corresponding control signals to each of the solenoid valves on the branch of the hot water supply pipeline. Several solenoid valves open or close upon receiving the control signals.

[0019] The second temperature sensor collects real-time water temperature data in the insulation section and sends the collected water temperature data to the control module. When the control module calculates and compares the water temperature data and finds that it is lower or higher than the second temperature threshold, the control module sends the corresponding control signal to the solenoid valve on the branch of the pipeline to be heated. The solenoid valve opens or closes according to the received control signal.

[0020] The return water level sensor collects real-time water level data in the heating unit and sends the collected water level data to the control module. When the control module calculates and compares the water level data and finds that it is lower or higher than the return water level threshold, the control module sends a corresponding control signal to the solenoid valve on the return water pipeline. The solenoid valve opens or closes according to the received control signal.

[0021] As a further improvement, the control module also includes an alarm module and a warning module. The alarm module and the warning module are connected to the control module via a chipset. The control module calculates the water replenishment rate of the insulation section using a preset formula. The control module controls whether the alarm module should sound an alarm based on the water replenishment rate of the insulation section. The warning module calculates the water replenishment rate of the insulation section using a preset formula. The control module controls whether the warning module should issue a warning based on a comparison between the water replenishment rate and the water supply rate of the insulation section.

[0022] An operation control method for an air source heat pump water heating system includes the following steps:

[0023] S1. The plurality of liquid level sensors respectively acquire data on the water level of the water tank, and the first temperature sensor and the second temperature sensor respectively acquire data on the water temperature at their respective locations;

[0024] S2. The liquid level sensors, the first temperature sensor, and the second temperature sensor respectively send the signals they acquire to the control module. The control module sends corresponding control signals to the solenoid valves on the corresponding pipelines based on the received signals, thereby realizing the opening and closing of the corresponding solenoid valves.

[0025] S3. The alarm module determines whether to send an alarm signal based on the water replenishment rate of the insulation section.

[0026] As a further improvement, S1 includes the following steps:

[0027] S101. Obtain the outflow rate of the first water tank during the water level data acquisition time and record it as V1. Define the water replenishment rate of the water replenishment pipe as V. 补 ;

[0028] S102. Obtain the water outflow rate of the heating unit during the water level data acquisition time and record it as V2. Define the water replenishment rate of the return water pipe as V. 回 ;

[0029] S103. Obtain the water replenishment rate of the insulation section during the water level data acquisition time and record it as V3. Define V3 = V1 + V2. Obtain the water supply rate of the insulation section during the water level data acquisition time and record it as V. 供 .

[0030] As a further improvement, all solenoid valves on the air source heat pump water heating system are defined to be in the closed state, and the water supply rate V of the insulation section is defined as follows. 供 =0 indicates an idle state;

[0031] When V1≥V 供 >0, and V 补 The first water replenishment state is when V1 is ≥1;

[0032] When V3≥V 供 >V1>0, and V 补 <V1 and V 回 When V2 is ≥2, it is the second water replenishment state;

[0033] When V 供 >V3>0, and V 补 <V1 and V 回 <V2 indicates the third water replenishment state;

[0034] When V 供 >0, but V1=V2=V 补 =V 回 =0 indicates an alarm status;

[0035] When the air source heat pump water heating system is idle, and the water level in the storage tank reaches a preset threshold, the control module sends a control signal to all solenoid valves, and all solenoid valves accept the control signal and remain closed.

[0036] When the air source heat pump water heating system is in the first water replenishment state, the control module sends a control signal to the solenoid valve on the hot water supply pipeline, and the solenoid valve receives the control signal and performs the opening operation.

[0037] When the air source heat pump water heating system is in the second water replenishment state, the control module sends control signals to each solenoid valve on the hot water supply pipeline, return pipeline and branch of the pipeline to be heated, and the solenoid valves receive the control signals and perform opening operations.

[0038] When the air source heat pump water heating system is in the third water replenishment state, the control module sends a control signal to each solenoid valve on the branch of the hot water supply pipeline, the return pipeline and the pipeline to be heated. After the solenoid valves receive the control signal and perform the opening operation, the control module sends a warning signal to the warning module, and the warning module issues a warning after receiving the warning signal.

[0039] When the air source heat pump water heating system is in alarm state, the control module sends a control signal to all solenoid valves on the hot water supply pipeline, return pipeline, water supply pipeline, water replenishment pipeline, and pipeline to be heated. After all solenoid valves receive the control signal and close, the control module sends an alarm signal to the alarm module, which then triggers an alarm.

[0040] Regardless of the water replenishment status of the air source heat pump water heating system, when the insulation section needs emergency water replenishment, the control module will first send control signals to each solenoid valve on the branch of the pipeline to be heated and the branch of the hot water supply pipeline. Several of the solenoid valves will receive the control signals and perform opening operations.

[0041] The beneficial effects of this invention are:

[0042] 1. By dividing the water storage tank into a first water tank and a second water tank, and further dividing the interior of the second water tank into a heating section and an insulation section, and then cooperating with the control system installed in the air source heat pump water heating system, water of different temperatures is stored and heated separately, thereby better controlling the inlet water temperature of the air source heat pump.

[0043] 2. By mixing the water in the heating element with the water in the first water tank before passing it through the air source heat pump for heating, the heating efficiency of the air source heat pump is improved, while also increasing the stability of the hot water supply temperature.

[0044] 3. By using the control system installed within the air source heat pump water heating system, different operations can be performed on the air source heat pump water heating system for different usage conditions, thereby better realizing the energy-saving operation of the air source heat pump water heating system. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0046] Fig. 1 This is a schematic diagram of the overall structure of the present invention;

[0047] Fig. 2 This is the logic diagram for determining the working mode state switching of the present invention.

[0048] Figure label:

[0049] 1-First water tank, 101-Replenishment water level sensor, 2-Heat pump unit, 3-Second water tank, 31-Heating unit, 311-Return water level sensor, 32-Insulation unit, 321-Supply water level sensor, 4-Replenishment water pipe, 5-Supply water pipe, 6-Return water pipe, 7-Circulation pipe, 8-Hot water supply pipe, 9-Pipe to be heated, 10-First temperature sensor, 11-Second temperature sensor, 12-Solenoid valve. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, the terms "upper," "lower," "above," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0052] Reference Figs. 1-2 As shown, this embodiment provides an air source heat pump water heating system, including:

[0053] The water storage tank includes a first water tank 1 and a second water tank 3 arranged at intervals, and the interior of the second water tank 3 is divided into an insulation part 32 and a heating part 31 by a heat insulation partition plate;

[0054] Heat pump unit 2, which is used to extract and heat the water stored in the first water tank 1 or the heating part 31, or to pump the heated water into the first water tank 1 or the insulation part 32.

[0055] The piping system includes a circulation pipe 7 connecting the insulation section 32 and the heating section 31. The first water tank 1 is connected to the municipal water supply system via a water replenishment pipe 4. The insulation section 32 is connected to the water user via a water supply pipe 5. The heating section 31 is connected to the water user via a return pipe 6. The first water tank 1 and the insulation section 32 are connected in parallel to the outlet of the heat pump unit 2 to form a hot water supply pipe 8. The first water tank 1 and the heating section 31 are connected in parallel to the inlet of the heat pump unit 2 to form a pipe to be heated. The circulation pipe 7 is connected in parallel to a branch of the pipe to be heated between the heat pump unit 2 and the insulation section 32.

[0056] The sensing module includes a first temperature sensor 10 disposed on the main outlet pipe of the heat pump unit 2, a second temperature sensor 11 disposed in the insulation part 32, and liquid level sensors disposed in the first water tank 1, the heating part 31, and the insulation part 32 respectively. The water temperature data acquisition time of the first temperature sensor 10 and the second temperature sensor 11 is the same, and the water level data acquisition time of the plurality of liquid level sensors is the same.

[0057] The control module includes a control module and several solenoid valves 12 for controlling the opening and closing of pipelines. The several solenoid valves 12 are respectively installed on the branches of the hot water supply pipeline 8, the branches of the pipeline to be heated, the return water pipeline 6, the supply water pipeline 5, the replenishment water pipeline 4, and the circulation pipeline 7. The control module is communicatively connected to the sensing module and the several solenoid valves 12. The control module sends corresponding control signals to each of the solenoid valves 12 according to the temperature data / water level data collected by the sensing module and the various threshold parameters preset in the control module. The several solenoid valves 12 open or close according to the received control signals.

[0058] Furthermore, the liquid level sensor includes a water replenishment level sensor 101 disposed in the first water tank 1, a water return level sensor 311 of the heating unit 31, and a water supply level sensor 321 of the heat preservation unit 32.

[0059] The control module is equipped with a water replenishment level threshold, a water return level threshold, a water supply level threshold, a first temperature threshold, and a second temperature threshold.

[0060] The water level sensor 101 collects real-time water level data in the first water tank 1 and sends the collected water level data to the control module. When the control module calculates and compares the water level data and finds that it is lower or higher than the water level threshold, the control module sends the corresponding control signal to the solenoid valve 12 on the water supply pipeline 4. The solenoid valve 12 opens or closes according to the received control signal.

[0061] The water supply level sensor 321 collects real-time water level data within the insulation section 32 and sends the collected water level data to the control module. Simultaneously, the water supply temperature sensor collects water temperature data on the main branch of the hot water supply pipeline 8 and sends the collected water temperature data to the control module. When the control module calculates and compares whether the water level data is lower or higher than the water supply level threshold and whether the water temperature data is lower or higher than the first temperature threshold, the control module sends corresponding control signals to each of the solenoid valves 12 on the branch of the hot water supply pipeline 8. The solenoid valves 12 open or close upon receiving the control signals.

[0062] The second temperature sensor 11 collects real-time water temperature data in the insulation section 32 and sends the collected water temperature data to the control module. When the control module calculates and compares the water temperature data and finds that it is lower or higher than the second temperature threshold, the control module sends the corresponding control signal to the solenoid valve 12 on the branch of the pipeline to be heated 9. The solenoid valve 12 opens or closes according to the received control signal.

[0063] The return water level sensor 311 collects real-time water level data in the heating unit 31 and sends the collected water level data to the control module. When the control module calculates and compares the water level data to determine whether it is lower or higher than the return water level threshold, the control module sends a corresponding control signal to the solenoid valve 12 on the return water pipeline 6. The solenoid valve 12 opens or closes according to the received control signal.

[0064] Furthermore, the control module also includes an alarm module and a warning module. The alarm module and the warning module are connected to the control module via a chipset. The control module calculates the water replenishment rate of the insulation section 32 using a preset formula. The control module controls whether the alarm module issues an alarm based on the water replenishment rate of the insulation section 32. Similarly, the warning module calculates the water replenishment rate of the insulation section 32 using a preset formula, and the control module controls whether the warning module issues a warning based on a comparison between the water replenishment rate and the water supply rate of the insulation section 32.

[0065] And the preset formula is:

[0066]

[0067] When the water replenishment rate of the insulation section 32 is calculated to be zero using a preset formula, the control module sends an alarm signal to the alarm module to alert the staff to perform system checks. When the water replenishment rate of the insulation section 32 is calculated to be less than the water supply rate of the insulation section 32 using a preset formula, the control module sends a warning signal to the warning module to alert the staff that the system is currently operating under load and needs to be shut down within a certain period of time to avoid damage to the entire system.

[0068] In this embodiment, the water temperature in the first water tank 1 is not higher than 50°C, the water temperature in the insulation part 32 is not lower than 53°C, and the water temperature in the heating part 31 is controlled between 40°C and 45°C.

[0069] Furthermore, the operation control method of the air source heat pump water heating system includes the following steps:

[0070] S1. The plurality of liquid level sensors respectively acquire data on the water level of the water tank, and the first temperature sensor and the second temperature sensor respectively acquire data on the water temperature at their respective locations;

[0071] S2. The liquid level sensors, the first temperature sensor and the second temperature sensor respectively send the signals they acquire to the control module. The control module sends corresponding control signals to the solenoid valve 12 on the corresponding pipeline according to the received signals, thereby realizing the opening and closing of the corresponding solenoid valve 12.

[0072] S3. The alarm module determines whether to send an alarm signal based on the water replenishment rate of the insulation section 32.

[0073] Furthermore, S1 includes the following steps:

[0074] S101. Obtain the outflow rate of the first water tank 1 during the water level data acquisition time and record it as V1. Define the water replenishment rate of the water replenishment pipe as V_replenish.

[0075] S102. Obtain the water outflow rate of the heating unit 31 during the water level data acquisition time and record it as V2. Define the water replenishment rate of the return water pipe as Vre.

[0076] S103. Obtain the water replenishment rate of the insulation unit 32 during the water level data acquisition time and record it as V3. Define V3=V1+V2. Obtain the water supply rate of the insulation unit 32 during the water level data acquisition time and record it as Vsu.

[0077] Furthermore, all solenoid valves 12 on the air source heat pump water heating system are defined as closed, and the water supply rate V_supply of the insulation section 32 is defined as idle when V_supply = 0.

[0078] When V1≥Vsu>0 and Vrench≥V1, it is the first water replenishment state;

[0079] The second water replenishment state is when V3≥Vsu > V1>0, Vreplenish < V1 and Vreturn ≥ V2;

[0080] When Vsupply > V3 > 0, and Vreplenish < V1 and Vreturn < V2, it is the third water replenishment state;

[0081] When Vsupply > 0, but V1 = V2 = Vreplenish = Vreturn = 0, it is an alarm state;

[0082] When the air source heat pump water heating system is idle, and the water level in the storage tank reaches a preset threshold, the control module sends a control signal to all solenoid valves 12, and all solenoid valves 12 accept the control signal and remain closed.

[0083] When the air source heat pump water heating system is in the first water replenishment state, the control module sends a control signal to the solenoid valve 12 on the hot water supply pipeline 8. The solenoid valve 12 receives the control signal and performs the opening operation, that is, all the water replenishment of the insulation part 32 is provided through the first water tank 1.

[0084] When the air source heat pump water heating system is in the second water replenishment state, the control module sends a control signal to each solenoid valve 12 on the branch of the hot water supply pipeline 8, the return water pipeline 6 and the pipeline to be heated 9. The solenoid valves 12 receive the control signal and perform the opening operation, that is, the water replenishment of the insulation part 32 is provided simultaneously through the first water tank 1 and the heating part 31.

[0085] However, in actual use, in order to make the heating efficiency of the heat pump unit 2 higher, the hot water in the heating section 31 is usually mixed with the cold water in the first water tank 1 (since the water temperature in the first water tank 1 is in the range of 15-50℃, while the water temperature in the heating section 31 is in the range of 40-45℃, by mixing the water in the first water tank 1 and the water in the heating section 31, the average water temperature entering the heat pump unit 2 is controlled at about 32℃), and then supplied to the insulation section 32 by the heat pump unit 2, thereby increasing the temperature difference at the bottom of the heat pump unit 2 (the temperature difference between the high temperature side medium outlet and the low temperature side medium inlet), which in turn improves the heating efficiency of the heat pump unit 2.

[0086] When the air source heat pump water heating system is in the third water replenishment state, the control module sends control signals to each solenoid valve 12 on the branches of the hot water supply pipeline 8, the return water pipeline 6, and the pipeline to be heated 9. After the solenoid valves 12 receive the control signals and open, the control module sends a warning signal to the warning module. The warning module issues a warning after receiving the warning signal. That is, the water replenishment of the insulation part 32 is provided simultaneously by the first water tank 1 and the heating part 31, but the water supply efficiency of the insulation part 32 is higher than the water replenishment efficiency of the insulation part 32. In other words, the air source heat pump water heating system is under load. In order to better protect the service life of the air source heat pump water heating system, the warning module issues a warning to remind the staff not to operate the air source heat pump water heating system under load for a long time.

[0087] When the air source heat pump water heating system is in alarm state, the control module sends a control signal to all solenoid valves 12 on the hot water supply pipe 8, return water pipe 6, water supply pipe 5, water replenishment pipe 4, and the pipe to be heated 9. After all solenoid valves 12 receive the control signal and close, the control module sends an alarm signal to the alarm module. The alarm module then issues an alarm, indicating that the air source heat pump water heating system has experienced a water outage. The alarm module alerts staff to check the system.

[0088] Regardless of the water replenishment status of the air source heat pump water heating system, when the insulation section 32 needs emergency water replenishment, the control module will send control signals to each solenoid valve 12 on the branch of the pipe to be heated 9 and the branch of the hot water supply pipe 8. The solenoid valves 12 will receive the control signals and open, meaning that the water replenishment for the insulation section 32 will be provided by the heating section 31.

[0089] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An air source heat pump water heating system, characterized in that, include: A water storage tank, comprising a first water tank and a second water tank spaced apart, wherein the interior of the second water tank is divided into an insulation section and a heating section by an insulation partition; A heat pump unit is used to extract and heat the water stored in the first water tank or the heating section, or to pump the heated water into the first water tank or the insulation section. The piping system includes a circulation pipeline connecting the insulation section and the heating section. The first water tank is connected to the municipal water supply system via a water replenishment pipeline. The insulation section is connected to the water user via a water supply pipeline. The heating section is connected to the water user via a return pipeline. The first water tank and the insulation section are connected in parallel to the outlet of the heat pump unit to form a hot water supply pipeline. The first water tank and the heating section are connected in parallel to the inlet of the heat pump unit to form a pipeline to be heated. The circulation pipeline is connected in parallel to a branch of the pipeline to be heated between the heat pump unit and the insulation section. The sensing module includes a first temperature sensor disposed on the main outlet pipe of the heat pump unit, a second temperature sensor disposed in the insulation section, and liquid level sensors disposed in the first water tank, the heating section, and the insulation section respectively. The water temperature data acquisition time of the first temperature sensor and the second temperature sensor is the same, and the water level data acquisition time of the plurality of liquid level sensors is the same. The control module includes a control module and several solenoid valves for controlling the opening and closing of pipelines. The solenoid valves are respectively installed on branches of the hot water supply pipeline, branches of the pipeline to be heated, the return water pipeline, the supply water pipeline, the make-up water pipeline, and the circulation pipeline. The control module is communicatively connected to the sensing module and the solenoid valves. The control module sends corresponding control signals to each solenoid valve according to the temperature / water level data collected by the sensing module and various preset threshold parameters in the control module. The solenoid valves open or close according to the received control signals.

2. The air source heat pump water heating system according to claim 1, characterized in that, The liquid level sensor includes a water replenishment liquid level sensor installed in the first water tank, a water return liquid level sensor of the heating unit, and a water supply liquid level sensor of the insulation unit; The control module is equipped with a water replenishment level threshold, a water return level threshold, a water supply level threshold, a first temperature threshold, and a second temperature threshold. The water level sensor collects real-time water level data in the first water tank and sends the collected water level data to the control module. When the control module calculates and compares the water level data and finds that it is lower or higher than the water level threshold, the control module sends a corresponding control signal to the solenoid valve on the water supply pipeline. The solenoid valve opens or closes according to the received control signal. The water supply level sensor collects real-time water level data within the insulation section and sends the collected water level data to the control module. Simultaneously, the water supply temperature sensor collects water temperature data on the main branch of the hot water supply pipeline and sends the collected water temperature data to the control module. When the control module calculates and compares whether the water level data is lower or higher than the water supply level threshold and whether the water temperature data is lower or higher than the first temperature threshold, the control module sends corresponding control signals to each of the solenoid valves on the branch of the hot water supply pipeline. Several solenoid valves open or close upon receiving the control signals. The second temperature sensor collects real-time water temperature data in the insulation section and sends the collected water temperature data to the control module. When the control module calculates and compares the water temperature data and finds that it is lower or higher than the second temperature threshold, the control module sends the corresponding control signal to the solenoid valve on the branch of the pipeline to be heated. The solenoid valve opens or closes according to the received control signal. The return water level sensor collects real-time water level data in the heating unit and sends the collected water level data to the control module. When the control module calculates and compares the water level data and finds that it is lower or higher than the return water level threshold, the control module sends a corresponding control signal to the solenoid valve on the return water pipeline. The solenoid valve opens or closes according to the received control signal.

3. The air source heat pump water heating system according to claim 1, characterized in that, The control module further includes an alarm module and a warning module. The alarm module and the warning module are connected to the control module via a chipset. The control module calculates the water replenishment rate of the insulation section using a preset formula. The control module controls whether the alarm module should sound an alarm based on the water replenishment rate of the insulation section. The warning module calculates the water replenishment rate of the insulation section using a preset formula. The control module controls whether the warning module should issue a warning based on a comparison between the water replenishment rate and the water supply rate of the insulation section.

4. A method for operating and controlling an air source heat pump water heating system, characterized in that, The implementation of the air source heat pump water heating system according to claim 3 includes the following steps: S1. The plurality of liquid level sensors respectively acquire data on the water level of the water tank, and the first temperature sensor and the second temperature sensor respectively acquire data on the water temperature at their respective locations; S2. The liquid level sensors, the first temperature sensor, and the second temperature sensor respectively send the signals they acquire to the control module. The control module sends corresponding control signals to the solenoid valves on the corresponding pipelines based on the received signals, thereby realizing the opening and closing of the corresponding solenoid valves. S3. The alarm module determines whether to send an alarm signal based on the water replenishment rate of the insulation section.

5. The operation control method for an air source heat pump water heating system according to claim 4, characterized in that, S1 includes the following steps: S101. Obtain the outflow rate of the first water tank during the water level data acquisition time and record it as V1. Define the water replenishment rate of the water replenishment pipe as V. 补 ; S102. Obtain the water outflow rate of the heating unit during the water level data acquisition time and record it as V2. Define the water replenishment rate of the return water pipe as V. 回 ; S103. Obtain the water replenishment rate of the insulation section during the water level data acquisition time and record it as V3. Define V3 = V1 + V2. Obtain the water supply rate of the insulation section during the water level data acquisition time and record it as V. 供 .

6. The operation control method for an air source heat pump water heating system according to claim 5, characterized in that, All solenoid valves in the air source heat pump water heating system are defined as being in the closed state, and the water supply rate V of the insulation section is defined as... 供 =0 indicates an idle state; When V1≥V 供 >0, and V 补 The first water replenishment state is when V1 is ≥1; When V3≥V 供 >V1>0, and V 补 <V1 and V 回 When V2 is ≥2, it is the second water replenishment state; When V 供 >V3>0, and V 补 <V1 and V 回 <V2 indicates the third water replenishment state; When the air source heat pump water heating system is in the third water replenishment state, but V1=V2=V 补 =V 回 =0 indicates an alarm status; When the air source heat pump water heating system is idle, and the water level in the storage tank reaches a preset threshold, the control module sends a control signal to all solenoid valves, and all solenoid valves accept the control signal and remain closed. When the air source heat pump water heating system is in the first water replenishment state, the control module sends a control signal to the solenoid valve on the hot water supply pipeline, and the solenoid valve receives the control signal and performs the opening operation. When the air source heat pump water heating system is in the second water replenishment state, the control module sends control signals to each solenoid valve on the hot water supply pipeline, return pipeline and branch of the pipeline to be heated, and the solenoid valves receive the control signals and perform opening operations. When the air source heat pump water heating system is in the third water replenishment state, the control module sends a control signal to each solenoid valve on the branch of the hot water supply pipeline, the return pipeline, and the pipeline to be heated. After the solenoid valves receive the control signal and perform the opening operation, the control module sends a warning signal to the alarm module, and the alarm module issues a warning after receiving the warning signal. When the air source heat pump water heating system is in alarm state, the control module sends a control signal to all solenoid valves on the hot water supply pipeline, return pipeline, water supply pipeline, water replenishment pipeline, and pipeline to be heated. After all solenoid valves receive the control signal and close, the control module sends an alarm signal to the alarm module, which then triggers an alarm. Regardless of the water replenishment status of the air source heat pump water heating system, when the insulation section needs emergency water replenishment, the control module will first send control signals to each solenoid valve on the branch of the pipeline to be heated and the branch of the hot water supply pipeline. Several of the solenoid valves will receive the control signals and perform opening operations.

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