Temperature control method for water purification heating system and water purification heating system

Abstract

The present invention provides a temperature control method for a water purification and heating system and a water purification and heating system. In the water purification and heating system, a water purification device, a hot water tank assembly and an instant hot water faucet are provided. A heating water path is arranged inside the instant hot water faucet, and a heat insulation water path is arranged around the outer layer of the heating water path. The working process is as follows: S1. Make a water source with a first temperature be filtered by the water purification device; S2. Make the filtered water source have a second temperature through the heat insulation water path and output it to the hot water tank assembly; S3. Make the water source stored in the hot water tank assembly have a third temperature; S4. Make the water source in the hot water tank assembly go to the instant hot water faucet for heating treatment and output it externally, and the water source output externally has a target temperature. Through the application of the temperature control method, the exported water source can have the technical advantages of large flow rate and precise temperature control, and at the same time has corresponding energy-saving effects.

Description

Technical Field

[0001] The present invention relates to the technical field of purified water heating, and in particular to a temperature control method of a purified water heating system and a purified water heating system. Background Art

[0002] In the current application of water purification systems with instant hot water faucets, when hot water output requires a higher temperature, the water output of the faucet is limited due to the power limitation of the instant hot water faucet.

[0003] In the prior art, CN202222316644.4 discloses an instant hot water faucet application with a double-layer structure.

[0004] In the application of instant faucet water purification system, in order to meet the output demand of hot water at a specific temperature and ensure the temperature accuracy of the output hot water, it is also necessary to accurately control the input flow of normal temperature water and hot water in the water circuit; generally, the instant faucet needs to heat the input water source in a short time and then output it directly, and the water volume cannot have the characteristics of large flow.

[0005] When the instant hot water faucet is used in conjunction with the water purification device, the hot water output of the instant hot water faucet will be much less than the pure water output of the water purification system, resulting in excessive pressure in the water path of the water purification system. For the water purification system using reverse osmosis filter elements, if the pressure before the reverse osmosis membrane structure is too high, the life of the reverse osmosis membrane will be shortened. Summary of the invention

[0006] The object of the present invention is to provide a temperature control method of a water purification heating system and a water purification heating system in order to overcome the deficiencies of the prior art.

[0007] A temperature control method for a purified water heating system, wherein a water purification device, a hot tank assembly and an instant hot faucet are arranged in the purified water heating system, a heating water circuit is arranged in the instant hot faucet, and an insulating water circuit is arranged around the outer layer of the heating water circuit; its working process includes the following steps: S1, allowing a water source with a first temperature to be filtered by the water purification device; S2, allowing the filtered water source to be output to the hot tank assembly through the insulating water circuit; when the instant hot faucet is in heating operation, the water source will take away part of the heat of the outer layer of the instant hot faucet when flowing through the insulating water circuit, so that the water source has a second temperature; S3, allowing the hot tank assembly to heat the input water source and store it in a heat-insulated state, and the water source stored in the hot tank assembly has a third temperature; S4, allowing the water source in the hot tank assembly to be output to the heating water circuit in the instant hot faucet for heating treatment, and then output to the outside, and the water source output to the outside has a target temperature.

[0008] Further, step S4 includes the following steps: S4-1, outputting the water source stored in the hot tank assembly into the high-temperature mixing water path; S4-2, outputting the water source with the first temperature or the second temperature, and / or the water source with the fourth temperature obtained by mixing the water sources with the first temperature and the second temperature into the normal-temperature mixing water path; S4-3, mixing the water source in the high-temperature mixing water path with the water source in the normal-temperature mixing water path to obtain a water source with the fifth temperature; S4-4, outputting the water source with the fifth temperature to the heating water path in the instant hot water faucet through the temperature-controlled mixing water path for heating treatment, so that the water source after the heating treatment has the target temperature.

[0009] Further, a first water control mechanism is arranged in the normal-temperature mixing water path to control the water volume output of the water source output to the mixing treatment in the normal-temperature mixing water path by the first water control mechanism; and / or, a second water control mechanism is arranged in the high-temperature mixing water path to control the water volume output of the water source output to the mixing treatment in the high-temperature mixing water path by the second water control mechanism.

[0010] Further, a mixing valve is arranged at the mixing position of the normal-temperature mixing water path and the high-temperature mixing water path. The mixing valve includes a normal-temperature water inlet end communicated with the normal-temperature mixing water path, a high-temperature water inlet end communicated with the high-temperature mixing water path, and a mixing water outlet end communicated with the heating water path; by adjusting the opening areas of the two water inlet openings at the normal-temperature water inlet end and the high-temperature water inlet end, the water volume of the water sources at both ends input into the mixing valve is controlled.

[0011] Further, a temperature sensing component is arranged in the temperature-controlled mixing water path, and a temperature threshold is set on the temperature sensing component at the fifth temperature; when the temperature sensing component detects that the water source in the temperature-controlled mixing water path is lower than the temperature threshold, fine adjustment control is performed to close the opening area of the water inlet opening at the normal-temperature water inlet end and / or open the opening area of the water inlet opening at the high-temperature water inlet end; when the temperature sensing component detects that the water source in the temperature-controlled mixing water path is higher than the temperature threshold, fine adjustment control is performed to open the opening area of the water inlet opening at the normal-temperature water inlet end and / or close the opening area of the water inlet opening at the high-temperature water inlet end.

[0012] Further, a temperature sensing component is arranged in the temperature-controlled mixing water path, and a heating component is arranged in the heating water path. In step S4-4, the temperature sensing component is used to detect the temperature of the water source input into the temperature-controlled mixing water path, and then an electric signal is fed back to the heating component, so that the heating component performs temperature compensation heating treatment on the power adjustment of the water source in the heating water path, so that the water source after the heating treatment has the target temperature.

[0013] Further, the water purification device includes a reverse osmosis filter element assembly and a booster pump, such that a water source at a first temperature is input from the raw water input end, pressurized by the booster pump, and output to the hot water tank assembly from the pure water side of the reverse osmosis filter element assembly through the heat insulation water path; when the water source is subjected to mixing treatment, a part of the water source output from the pure water side of the reverse osmosis filter element assembly is returned to the water inlet end of the booster pump to balance the water path pressure in the system.

[0014] A water purification and heating system, which includes a water purification device, a hot water tank assembly, and an instant hot water faucet. The instant hot water faucet has a double-layer structure, with a heating water path provided inside and a heat insulation water path arranged around the heating water path; this water purification and heating system applies the temperature control method as described above to perform temperature-controlled output of the water source.

[0015] Further, the water purification device includes a reverse osmosis filter element assembly and a booster pump; it also includes a mixing valve arranged in a tee structure. The mixing valve includes a normal temperature water inlet end, a high temperature water inlet end, and a mixed water outlet end. At both ends of the normal temperature water inlet end and the high temperature water inlet end, there are provided water inlet adjustment structures for adjusting the opening size; the raw water input end, the booster pump, and the water inlet side of the reverse osmosis filter element assembly are connected to form a water inlet flow path; the pure water side of the reverse osmosis filter element assembly and the water inlet end of the hot water tank assembly are connected to form a flow path into the tank; the pure water side of the reverse osmosis filter element assembly and the normal temperature water inlet end are connected to form a normal temperature mixed water water path, the first water outlet end of the hot water tank assembly and the high temperature water inlet end are connected to form a high temperature mixed water water path, and the mixed water outlet end and the water inlet end of the heating water path are connected to form a temperature-controlled mixed water water path. The normal temperature mixed water water path, the high temperature mixed water water path, and the temperature-controlled mixed water water path are combined to form a temperature-controlled flow path.

[0016] Further, the water purification device includes a reverse osmosis filter element assembly and a booster pump; it also includes a mixing valve arranged in a tee structure. The mixing valve includes a normal temperature water inlet end, a high temperature water inlet end, and a mixed water outlet end; the raw water input end, the booster pump, and the water inlet side of the reverse osmosis filter element assembly are connected to form a water inlet flow path; the pure water side of the reverse osmosis filter element assembly and the water inlet end of the booster pump are connected to form a return flow path, and a return control valve is arranged in the return flow path; the pure water side of the reverse osmosis filter element assembly and the water inlet end of the hot water tank assembly are connected to form a flow path into the tank; the pure water side of the reverse osmosis filter element assembly and the normal temperature water inlet end are connected to form a normal temperature mixed water water path, the hot water outlet end of the hot water tank assembly and the high temperature water inlet end are connected to form a high temperature mixed water water path, and the mixed water outlet end and the water inlet end of the heating water path are connected to form a temperature-controlled mixed water water path. The normal temperature mixed water water path, the high temperature mixed water water path, and the temperature-controlled mixed water water path are combined to form a temperature-controlled flow path; a first water control mechanism for controlling the water volume output is arranged in the normal temperature mixed water water path, and a second water control mechanism for controlling the water volume output is arranged in the flow path into the tank or the high temperature mixed water water path.

[0017] The beneficial effects of the present invention are as follows:

[0018] Through the application of the temperature control method of the water purification and heating system, during the water source output process of the water purification device, it can cooperate with the instant hot water faucet with a double-layer structure and the hot water tank assembly for heating and heat preservation to gradually heat the water source. The derived water source has the technical advantages of large flow rate and precise temperature control, and at the same time has corresponding energy-saving effects.

[0019] For the water purification and heating system applying this temperature control method, through the temperature control flow channel arranged by the normal temperature mixing water circuit, high temperature mixing water circuit, and temperature control mixing water circuit, and cooperating with the first water control mechanism and the second water control mechanism applied in the two end input water circuits, effective water source mixing adjustment can be carried out to meet the application requirements of outputting water source with a specific temperature controlled.

[0020] For the water purification and heating system applying this temperature control method, through the mixing valve structure with adjustable opening sizes at both ends of the water inlet in the temperature control flow channel, the temperature control flow channel can carry out effective water source mixing adjustment to meet the application requirements of outputting water source with a specific temperature controlled.

[0021] By setting a temperature sensing component at the water outlet end position in the temperature control flow channel, the temperature sensing component can cooperate with the heating component of the instant hot water faucet or the two end water inlet adjustment structure in the mixing valve or the first water control mechanism and the second water control mechanism arranged at both ends for feedback control of electrical signals, meeting the application of precise water temperature control output. And by setting a hot water tank assembly in front of the instant hot water faucet, the water source input to the instant hot water faucet for temperature control heating can be preheated and stored in the hot water tank assembly; the water source with a higher temperature is output to the instant hot water faucet, which can reduce the heating burden of the instant hot water faucet on the water source, making the hot water volume output by the instant hot water faucet to meet the target temperature larger; at the same time, the hot water tank assembly has a large water storage space, which can play a role in maintaining the water pressure balance in the system.

[0022] During the heating process of the input water source by the heating component set in the instant hot water faucet, the heat is maintained in the whole faucet; then an insulating water circuit is formed outside the instant hot water faucet, enabling the water source before entering the hot water tank assembly to first flow through the instant hot water faucet for waste heat collection, which can effectively make full use of energy. Description of the Drawings

[0023] Figure 1 Schematic diagram of the water circuit setting of Embodiment 1 of the water purification and heating system of the present invention;

[0024] Figure 2 Schematic diagram of the water circuit setting of Embodiment 2 of the water purification and heating system of the present invention.

[0025] Description of the reference numerals:

[0026] Water purification device 1, raw water input end 11, pure water output end 12, waste water output end 13, waste water control valve 131, reverse osmosis filter element assembly 14, pre-filter 15, post-filter 16, water inlet control valve 17, booster pump 18, return control valve 19, return check valve 191

[0027] Hot water tank assembly 2, flow channel into the tank 20, hot water control valve 201, water control and pumping water pump 202, negative pressure valve assembly 203, pressure reducing valve 204, first water outlet end 21, second water outlet end 22, pumping flow channel 23, hot water pumping water pump 231, pumping control valve 232

[0028] Instant hot water faucet 3, heating assembly 30, heat insulation water path 31, heating water path 32, faucet water outlet end 33, mixing valve 4, temperature control flow channel 40, normal temperature water inlet end 401, high temperature water inlet end 402, mixing water outlet end 403, normal temperature mixing water path 41, first water control mechanism 410, normal temperature mixing control valve 411, normal temperature mixing check valve 412, normal temperature mixing flow meter 413, high temperature mixing water path 42, second water control mechanism 420, high temperature mixing check valve 421, high temperature mixing flow meter 422, temperature control mixing water path 43, temperature sensing assembly 44

[0029] Normal temperature water flow channel 50, normal temperature water control valve 51 Specific embodiments

[0030] In order to make the technical solutions, objectives and advantages of the present invention clearer, the present invention will be further explained below with reference to the drawings and embodiments.

[0031] As Figure 1 and Figure 2 shown, a water purification and heating system of the present utility model includes a water purification device 1, and the water purification device 1 is provided with a raw water input end 11 and a pure water output end 12. The pure water output end 12 is connected to a hot water tank assembly 2 for heating and thermally storing the water source, and the water outlet end of the hot water tank assembly 2 is communicated with the heating water path 32 of the instant hot water faucet 3.

[0032] By setting the hot water tank assembly 2, the pure water output from the water purification device 1 can be pre-heated and stored in the hot water tank assembly 2 before being input into the instant hot water faucet 3 (specific application is to pre-heat the water source in the tank to 75 degrees Celsius); then a higher temperature water source can be output to the instant hot water faucet 3. While meeting the heating application of the instant hot water faucet 3 for a higher temperature water source (95 degrees Celsius), the heating burden of the instant hot water faucet 3 on the water source can be reduced, so that the instant hot water faucet 3 can effectively output a larger amount of hot water at the target temperature per unit time.

[0033] In order to meet the demand for utilizing the residual heat from heating the instant hot faucet 3, the structure of the instant hot faucet 3 can be arranged in a double-layer structure based on the prior art, a heating component 30 is arranged in the inner layer structure of the instant hot faucet 3, an outer layer of the heating component 30 forms an insulating water circuit 31, and a heating water circuit 32 connected to the heating component 30 is arranged in the instant hot faucet 3.

[0034] The pure water output end 12, the insulating water circuit 31, and the water inlet end of the hot tank assembly 2 are connected to form a tank inlet channel 20; the water outlet end of the hot tank assembly 2 is connected to the water inlet end of the heating water circuit 32, and the water outlet end of the heating water circuit 32 is a faucet water outlet end 33, which is used for external output of water.

[0035] During the heating process, the room temperature pure water source output by the water purification device 1 can continuously flow through the outer structure of the instant hot faucet 3, taking away the surface heat generated during the working process of the instant hot faucet 3 to prevent the user from being scalded. At the same time, the pure water source that has absorbed the residual heat of the faucet is then introduced into the hot tank component 2 for heating operation, which can reduce the heating energy consumption of the hot tank component 2 for heating the water source stored inside it.

[0036] The temperature control method process steps are as follows:

[0037] S1, filtering a water source having a first temperature (normal temperature 20 degrees Celsius) by the water purification device;

[0038] S2, outputting the filtered water source to the hot pot assembly through the heat-insulating water circuit; when the instant hot faucet is in heating operation, the water source flowing through the heat-insulating water circuit will take away part of the heat of the outer layer of the instant hot faucet, so that the water source has a second temperature (greater than 20 degrees Celsius, about 25 degrees Celsius);

[0039] S3, causing the hot tank assembly to heat the input water source and store it at a temperature-insulated state, and the water source stored in the hot tank assembly has a third temperature (75 degrees Celsius);

[0040] S4, the water source in the hot tank assembly is output to the heating water path in the instant hot faucet for heating treatment, and then output to the outside. The water source output to the outside has a target temperature (95 degrees Celsius).

[0041] Embodiment 1:

[0042] In order to meet the application requirements of water purification, the water purification device 1 described in this embodiment is specifically configured as follows:

[0043] It includes a reverse osmosis filter element assembly 14, a composite filter element assembly which is a combination application of a pre-filter element 15 and a post-filter element 16 based on the application of existing technologies, an inlet control valve 17 and a booster pump 18. A water inlet flow path is formed between the raw water input end 11 of the water purification device 1, the pre-filter element 15, the inlet control valve 17, the booster pump 18 and the water inlet side of the reverse osmosis filter element assembly 14. The waste water side of the reverse osmosis filter element assembly 14 is connected to a waste water control valve 131 and communicated to a waste water output end 13 to form a waste water flow path; the pure water side of the reverse osmosis filter element assembly 14 is communicated with the water inlet end of the post-filter element 16, and the water outlet side of the post-filter element 16 is used as the pure water output end 12 of the water purification device 1; the waste water side of the reverse osmosis filter element assembly 14 is communicated with the waste water output end 13 to form a waste water flow path, and a waste water control valve 131 is arranged in the waste water flow path.

[0044] The water purification and heating system of this embodiment applies a temperature control method for water source mixing to meet the precise temperature control application requirements of the output of medium and low temperature water sources in the water purification and heating system.

[0045] Regarding the application of the above step S4, a mixed water flow path 40 is provided in the water purification and heating system of this embodiment, so that the normal temperature water source (20 degrees Celsius) output by the water purification device 1 is controlled to be mixed with the high temperature water source (75 degrees Celsius) stored after being heated and processed in the hot water tank assembly 2 to meet the application requirements of the water source output within a specific temperature range (20 degrees Celsius to 75 degrees Celsius).

[0046] The application of the temperature control method of this embodiment is as follows:

[0047] S4-1. Output the water source stored in the hot water tank assembly to the high temperature mixed water waterway;

[0048] S4-2. Output the water source with the first temperature (20 degrees Celsius) or the second temperature (25 degrees Celsius), and / or the water source with the fourth temperature (between 20 and 25 degrees Celsius, such as 23 degrees Celsius) obtained by mixing the first temperature water source and the second temperature water source to the normal temperature mixed water waterway;

[0049] S4-3. Mix the water source (75 degrees Celsius) in the high temperature mixed water waterway with the water source in the normal temperature mixed water waterway to obtain a water source with the fifth temperature (between 25 and 75 degrees Celsius, such as 40 degrees Celsius);

[0050] S4-4. Output the water source with the fifth temperature to the heating waterway in the instant hot water faucet through the temperature control mixed water waterway for heating treatment, so that the water source after heating treatment has the target temperature (such as 45 degrees Celsius).

[0051] Specifically, the waterway structure of this embodiment is set as Figure 1As shown in the figure, the water purification and heating system further includes a mixing valve 4 arranged in a tee structure, which includes a normal temperature water inlet end 401, a high temperature water inlet end 402 and a mixed water outlet end 403. The normal temperature water inlet end 401 is communicated with the pure water output end 12 to form a normal temperature mixing water path 41; the high temperature water inlet end 402 is communicated with the first water outlet end 21 of the hot water tank assembly 2 to form a high temperature mixing water path 42; the mixed water outlet end 403 is communicated with the water inlet end of the heating water path 32 to form a temperature-controlled mixing water path 43. A temperature-controlled flow channel 40 is formed among the normal temperature mixing water path 41, the high temperature mixing water path 42 and the temperature-controlled mixing water path 43.

[0052] As a preferred structural setting, a normal temperature mixing control valve 411 and a normal temperature mixing check valve 412 are arranged in the normal temperature mixing water path 41, a high temperature mixing check valve 421 is arranged in the high temperature mixing water path 42, and a hot water control valve 201 is arranged in the water inlet flow channel 20.

[0053] In the overall water path application of the temperature-controlled flow channel 40, the booster pump 18 in the water purification device 1 is set as the water outlet pressure source for water source mixing. Specifically, the booster pump 18 controls the pressure water source to be output from the pure water output end 12. One path passes through the water inlet flow channel 20 and is output to the position of the high temperature water inlet end 402 through the high temperature mixing water path 42, and the other path is output to the position of the normal temperature water inlet end 401 through the normal temperature mixing water path 41. The converging water flows are mixed in the mixing valve 4 and output from the mixed water outlet end 403 to meet the application of water source mixing with different temperatures.

[0054] In this embodiment, the mixing valve 4 is set as an electric mixing valve with adjustable opening sizes at both ends of the normal temperature water inlet end 401 and the high temperature water inlet end 402; in the mixing valve 4, an inlet adjustment structure for adjusting the opening size is arranged at both ends of the normal temperature water inlet end 401 and the high temperature water inlet end 402; through program control, the electric mixing valve 4 can control the inlet adjustment structures at both ends to adjust the corresponding inlet opening sizes in an electric control manner, so that different amounts of normal temperature water and high temperature water are mixed to achieve the purpose of water temperature control.

[0055] Such as the conditions: the inlet water temperature is 20 °C, and the hot water tank temperature is 75 °C; the target temperature: 45 °C.

[0056] Based on the principle of the heat absorption and release formula, Q = CM△T; then Q1 = CM1△(45 - 20) °C = CM1△25 °C, Q2 = CM2△(75 - 45) °C = CM2△30 °C (where C is the specific heat capacity of water, M is the mass of water, and the density of water = 1 g / cm 3)Since C1 = C2, that is, Q heat absorption = Q heat release, M1 / M2 = 6 / 5. Therefore, it is necessary to adjust the normal temperature water flow / high-temperature water flow in the heat tank = 6 / 5, and adjust the inlet opening area corresponding to the mixing valve 4 according to this ratio (the opening area of the normal temperature inlet end 401 is 60%, and the opening area of the high-temperature inlet end 402 is 50%). The target mixing temperature can be stably reached at the specified temperature point.

[0057] If due to other objective factors, the temperature cannot reach the specified precise temperature (generally on the low side, for example, the target temperature is 45 °C, but the temperature of the output mixed water source is 44 °C), then it can be heated by the heating component 30 in the instant hot water faucet 3 provided at the back end, so as to achieve heating and temperature control compensation.

[0058] As a preferred embodiment, a temperature sensing component 44 is provided in the temperature control mixing water path 43 between the mixing water outlet end 403 and the water inlet end of the heating water path 32, and the temperature sensing component 44 is an NTC temperature sensing element of the prior art.

[0059] Make the temperature sensing component 44 have an electrical connection relationship with the adjustment structures of the two ends of the inlet openings of the normal temperature inlet end 401 and the high-temperature inlet end 402; through the setting of the temperature sensing component 44, the temperature of the mixed water source output from the mixing water outlet end 403 can be effectively detected with the fifth temperature (40 degrees Celsius) as the temperature threshold, so as to feedback data to the heating system program in real time, thereby clarifying the water temperature situation of the mixed water source. When there is a certain deviation between the detected water temperature and the target temperature, the real-time information can be fed back to the mixing valve 4, and the adjustment of the opening areas of the two ends of the water inlet of the mixing valve 4 can be dynamically controlled (for example, if the water temperature is low, about only 38 degrees Celsius, that is, control the opening area of the water inlet of the high-temperature inlet end 402 to be larger or control the opening area of the water inlet of the normal temperature inlet end 401 to be smaller, so that more hot water flows out and the temperature of the output mixed water source is increased).

[0060] And the mixed water source that meets the fifth temperature requirement will be introduced into the instant hot water faucet 3, and the heating component 30 will perform heating treatment with a fixed power to meet the output application of the water source with the target temperature (45 degrees Celsius).

[0061] On the other hand, the temperature sensing component 44 can also be electrically connected to the heating component 30. When the temperature of the mixed water source in the temperature control mixing water path 43 detected by the temperature sensing component 44 fails to reach the preset threshold temperature, an information signal is fed back to the heating component 30, and the heating component 30 performs heating treatment for temperature compensation on the introduced water source (the heating power is increased).

[0062] For the simple application requirement of high-temperature water (greater than 75 degrees Celsius) outlet, the hot water tank assembly 2 is provided with a second water outlet end 22, and the second water outlet end 22 (through the temperature sensing assembly 44) is communicated with the water inlet end of the heating water path 32 of the instant hot water faucet 3 to form a water pumping flow path 23. As a preferred structural arrangement, a hot water pumping pump 231 and a water pumping control valve 232 are arranged in the water pumping flow path 23.

[0063] In application, for the output of pure water at high water temperature (greater than or equal to 75 degrees Celsius), the 75-degree Celsius heat preservation water source stored in the hot water tank assembly 2 can be directly pumped by the hot water pumping pump 231. Under the condition that the water source temperature is judged by the temperature sensing assembly 4, it is output externally through the faucet output end 33 after non-heating or appropriate heating treatment of the heating assembly 30 in the heating water path 32.

[0064] For the simple application requirement of normal temperature water or medium-low temperature water (in the range of 20 to 35 degrees Celsius) outlet, the pure water output end 12 of the water purification device 1 is directly communicated with the water inlet end of the heating water path 32 to form a normal temperature water flow path 50; the instant hot water faucet 3 does not start the heating program, so that the normal temperature water is directly output without heating through the heating water path 32; or the instant hot water faucet 3 is simply heated to meet the application of accurate temperature output of normal temperature or medium-low temperature pure water. As a preferred structural arrangement, a normal temperature water control valve 51 is arranged in the normal temperature water flow path 50.

[0065] Embodiment 2:

[0066] In order to further meet the application requirement of precise temperature control of the output water source, compared with the setting of the temperature control flow path 40, another water path structure scheme is applied in this embodiment.

[0067] Specifically, in the application of the temperature control flow path 40, the structure setting of the adjustable water inlet opening of the electric mixing valve 4 is cancelled in this embodiment, and the normal temperature mixing water path 41 and the high temperature mixing water path 42 are directly mixed and output through the conventional three-way structure mixing valve 4.

[0068] In order to meet the precise temperature control application effect, a first water control mechanism 410 for controlling the water output is arranged in the normal temperature mixing water path 41 in this embodiment, and a second water control mechanism 420 for controlling the water output is arranged in the water inlet flow path 20 or the high temperature mixing water path 42. In the application of the temperature control method, the first water control mechanism controls the water output of the water source output to the mixing process in the normal temperature mixing water path; and the second water control mechanism controls the water output of the water source output to the mixing process in the high temperature mixing water path.

[0069] The first water control mechanism 410 and the second water control mechanism 420 may optionally adopt the same structural combination form, including a pressure reducing valve 204, a negative pressure valve assembly 203, and a water control water pump 202. As a preferred embodiment, the pressure reducing valve 204, the negative pressure valve assembly 203, and the water control water pump 202 are arranged in sequence along the flow direction of the water. Optionally, two sets of negative pressure valve structures of the negative pressure valve assembly 203 are arranged in parallel.

[0070] As a preferred structural embodiment, in the normal temperature mixing water circuit 41, a normal temperature mixing check valve 412 and a normal temperature mixing water flow meter 413 are arranged between the water control water pump 202 and the normal temperature water inlet end 401; in the high temperature mixing water circuit 42, a high temperature mixing check valve 421 and a high temperature mixing water flow meter 422 are arranged between the first water outlet end 21 of the heat storage tank assembly 2 and the high temperature water inlet end 402; the second water control mechanism 420 is arranged in the inlet flow channel 20.

[0071] Through the setting of the first water control mechanism 410 and the second water control mechanism 420, especially the application of the water control water pump 202, in the application of the water circuit with the booster pump 18 as the pressure output source, the water pressure output in the normal temperature mixing water circuit 41 and the high temperature mixing water circuit 42 is effectively and stably controlled, so that the two ends of the water circuit can respectively output water sources with different flow rates according to different water pressure pressures, meeting the application requirements of obtaining a temperature-controlled water source by mixing high temperature water sources and normal temperature water sources with specific flow rates.

[0072] According to the principle of the heat absorption and heat release formula Q = CMΔT, calculate the flow pressure output indexes of the water control water pump 202 in both the normal temperature mixing water circuit 41 and the high temperature mixing water circuit 42, so as to control the output of the water control water pump 202 in the two water control mechanisms, so that the temperature-controlled water source after mixing can reach the required temperature. If the temperature cannot reach the specified temperature due to certain objective factors, heating compensation can also be performed through the instant hot faucet 3 at the rear end.

[0073] Such as the conditions: the inlet water temperature is 20 °C, and the heat storage tank temperature is 75 °C; the target temperature: 45 °C.

[0074] Q1 = CM1Δ(45 - 20) °C = CM1Δ25 °C Q2 = CM2Δ(75 - 45) °C = CM2Δ30 °C (where C is the specific heat capacity of water, M is the mass of water, and the density of water = 1 g / cm 3 ) Since C1 = C2, that is, Q heat absorption = Q heat release, M1 / M2 = 6 / 5. That is, the normal temperature water flow rate / high temperature water flow rate = 6 / 5. Control the water control water pumps 202 at both ends to output water sources in this ratio for mixing, and the mixed water temperature can stably reach the target specified temperature point.

[0075] As a preferred embodiment, a temperature sensing component 44 is arranged in the temperature controlled mixing water waterway 43 between the mixing water outlet end 403 and the water inlet end of the heating component 30, and the temperature sensing component 44 is applied as an NTC temperature sensing element of the prior art.

[0076] The temperature sensing component 44 is electrically connected and cooperated with the water control mechanisms at both ends of the normal temperature water inlet end 401 and the high temperature water inlet end 402. Through the arrangement of the temperature sensing component 44, the water temperature of the mixed water source output from the mixing water outlet end 403 can be effectively detected, and the data can be fed back to the heating system program in real time, so as to clarify the water temperature condition of the mixed water source. When there is a certain deviation between the detected water temperature and the target temperature, the real-time information can be fed back to the first water control mechanism 410 or the second water control mechanism 420, and the water source output pressure of the normal temperature water source and the high temperature water source can be dynamically controlled, so as to adjust the mixing ratio of the two water sources (for example, if the water temperature is low, that is, the water control water pump 202 of the second water control mechanism 420 is controlled to increase the output pressure, or the pumping control pump 202 in the first water control mechanism is controlled to reduce the output pressure).

[0077] In practical applications, since the normal temperature mixing water waterway 41 and the high temperature mixing water waterway 42 for mixing water are provided with water control water pumps 202 to control the water output of the corresponding flow channels; however, as the main pressure source, the booster pump 18 works with a constant supply pressure during the working process. Under the pressure application of the booster pump 18, the pure water production capacity of the reverse osmosis filter element assembly 14 in the water purification device 1 will be greater than the sum of the water output of the normal temperature mixing water waterway 41 and the high temperature mixing water waterway 42; in order to avoid the situation that the water pressure in the water purification device is too high due to redundant water production in the waterway, in the solution of this embodiment, the pure water side of the reverse osmosis filter element assembly 14 is communicated between the raw water input end 11 and the water inlet end of the booster pump 18 to form a reflux flow channel. The reflux application requirements of redundant water production in the waterway are met, and the pressure balance in the water purification device 1 is maintained. As a preferred structural form, a reflux check valve 191 is arranged between the reflux control valve 19 and the water inlet end side of the booster pump 18.

[0078] The above is only the preferred embodiment of the present invention. For those skilled in the art of this technology, without departing from the implementation principle of the present invention, the above embodiments can still be modified, and the corresponding modification schemes should also be regarded as the protection scope of the present invention.

Claims

1. A temperature control method for a water purification and heating system, characterized in that, The water purification and heating system is provided with a water purification device, a hot tank assembly and an instant hot water faucet, a heating water path is provided inside the instant hot water faucet, and an insulating water path is provided around the outer layer of the heating water path; The working process includes the following steps: S1, filtering a water source having a first temperature through the water purification device; S2, outputting the filtered water source to the hot pot assembly through the heat-insulating water circuit; when the instant hot faucet is in heating operation, the water source flowing through the heat-insulating water circuit will take away part of the heat of the outer layer of the instant hot faucet, so that the water source has a second temperature; S3, causing the hot tank assembly to heat the input water source and store it at a temperature-insulated state, so that the water source stored in the hot tank assembly has a third temperature; S4, outputting the water source in the hot tank assembly to the heating water path in the instant hot faucet for heating treatment, and then outputting it to the outside, the water source output to the outside having a target temperature; The step S4 comprises the following steps: S4-1, outputting the water source stored in the hot tank assembly to the high-temperature mixed water channel; S4-2, outputting the water source having the first temperature or the second temperature, and / or the water source having the fourth temperature obtained by mixing the water source having the first temperature and the water source having the second temperature, to the normal temperature water mixing water channel; S4-3, mixing the water source in the high-temperature mixed water channel with the water source in the normal-temperature mixed water channel to obtain water source with a fifth temperature; S4-4, outputting the water source having the fifth temperature through the temperature-controlled water mixing water channel to the heating water channel in the instant hot water faucet for heating treatment, so that the water source after the heating treatment has the target temperature.

2. The temperature control method according to claim 1, characterized in that, A first water control mechanism is provided in the normal temperature mixed water circuit, and the first water control mechanism is used to control the water volume output from the normal temperature mixed water circuit to the water source for mixing treatment; and / or a second water control mechanism is provided in the high temperature mixed water circuit, and the second water control mechanism is used to control the water volume output from the high temperature mixed water circuit to the water source for mixing treatment.

3. The temperature control method according to claim 1, characterized in that, A mixing valve is set at the mixing processing position of the normal temperature mixing water channel and the high temperature mixing water channel, and the mixing water valve includes a normal temperature water inlet end connected to the normal temperature mixing water channel, a high temperature water inlet end connected to the high temperature mixing water channel, and a mixing water outlet end connected to the heating water channel; by adjusting the opening area of the water inlet openings at both ends of the normal temperature water inlet end and the high temperature water inlet end, the water volume of the water source at both ends is controlled to be input into the mixing water valve.

4. The temperature control method according to claim 3, characterized in that, A temperature sensing component is arranged in the temperature-controlled mixed water water circuit, and a temperature threshold is set on the temperature sensing component at a fifth temperature; when the temperature sensing component detects that the water source in the temperature-controlled mixed water water circuit is lower than the temperature threshold, fine-tuning control is performed to reduce the opening area of the water inlet opening of the normal temperature water inlet end and / or to increase the opening area of the water inlet opening of the high temperature water inlet end; when the temperature sensing component detects that the water source in the temperature-controlled mixed water circuit is higher than the temperature threshold, fine-tuning control is performed to increase the opening area of the water inlet opening of the normal temperature water inlet end and / or to reduce the opening area of the water inlet opening of the high temperature water inlet end.

5. The temperature control method according to claim 1, characterized in that, A temperature-sensing component is arranged in the temperature-controlled mixing water circuit, and a heating component is arranged in the heating water circuit. In step S4-4, the temperature-sensing component is used to detect the temperature of the water source input into the temperature-controlled mixing water circuit, and then feedback an electrical signal to the heating component, so that the heating component performs temperature compensation heating treatment on the water source in the heating water circuit by adjusting the power, so that the water source after the heating treatment has a target temperature.

6. The temperature control method according to any one of claims 1 to 5, characterized in that, The water purification device includes a reverse osmosis filter element assembly and a booster pump. The water source with the first temperature is input from the raw water input end, pressurized by the booster pump and output to the heat storage tank assembly through the pure water side of the reverse osmosis filter element assembly and the heat insulation water circuit; when the water source is subjected to mixing treatment, a part of the water source output from the pure water side of the reverse osmosis filter element assembly is returned to the water inlet end of the booster pump to balance the water pressure in the system water circuit.

7. Water purification and heating system, characterized in that, It includes a water purification device, a heat storage tank assembly and an instant hot water faucet. The instant hot water faucet has a double-layer structure, with a heating water circuit arranged inside and a heat insulation water circuit arranged around the heating water circuit; this water purification and heating system applies the temperature control method described in any one of claims 1 to 6 to perform temperature control output of the water source.

8. The water purification and heating system according to claim 7, characterized in that, The water purification device includes a raw water input end, a reverse osmosis filter element assembly, and a booster pump; it also includes a mixing valve arranged in a tee structure. The mixing valve includes a normal temperature water inlet end, a high temperature water inlet end, and a mixed water outlet end. The normal temperature water inlet end and the high temperature water inlet end are provided with an inlet adjustment structure for adjusting the opening size; the raw water input end, the booster pump and the water inlet side of the reverse osmosis filter element assembly are connected to form a water inlet flow channel; the pure water side of the reverse osmosis filter element assembly and the water inlet end of the heat storage tank assembly are connected to form an inlet flow channel into the tank; the pure water side of the reverse osmosis filter element assembly and the normal temperature water inlet end are connected to form a normal temperature mixing water circuit, the first water outlet end of the heat storage tank assembly and the high temperature water inlet end are connected to form a high temperature mixing water circuit, and the mixed water outlet end and the water inlet end of the heating water circuit are connected to form a temperature-controlled mixing water circuit. The normal temperature mixing water circuit, the high temperature mixing water circuit and the temperature-controlled mixing water circuit are combined to form a temperature-controlled flow channel.

9. The water purification and heating system according to claim 7, characterized in that, The water purification device includes a raw water input end, a reverse osmosis filter element assembly, and a booster pump; it further includes a mixing valve arranged in a tee structure, and the mixing valve includes a normal temperature water inlet end, a high temperature water inlet end, and a mixed water outlet end; the raw water input end, the booster pump are communicated with the water inlet side of the reverse osmosis filter element assembly to form a water inlet flow path; the pure water side of the reverse osmosis filter element assembly is communicated with the water inlet end of the booster pump to form a return flow path, and a return control valve is arranged in the return flow path; the pure water side of the reverse osmosis filter element assembly is communicated with the water inlet end of the hot water tank assembly to form a water inlet flow path into the tank; the pure water side of the reverse osmosis filter element assembly is communicated with the normal temperature water inlet end to form a normal temperature mixing water path, the hot water outlet end of the hot water tank assembly is communicated with the high temperature water inlet end to form a high temperature mixing water path, and the mixed water outlet end is communicated with the water inlet end of the heating water path to form a temperature control mixing water path. A temperature control flow path is formed by combining the normal temperature mixing water path, the high temperature mixing water path, and the temperature control mixing water path; a first water control mechanism for controlling the water output is arranged in the normal temperature mixing water path, and a second water control mechanism for controlling the water output is arranged in the water inlet flow path into the tank or the high temperature mixing water path.

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