Full angle temperature pre-conditioning device and water mixing valve

Abstract

This invention provides a full-angle temperature pre-regulation device and a mixing valve. Pressure sensors are installed on the two inlet pipes of the mixing valve to monitor the water pressure in the hot and cold water inlet pipes. A control module reads the monitoring data from the pressure sensors in real time, compares the water pressure in the hot and cold water inlet pipes, and controls a booster pump to pressurize the water flow on the side with lower pressure, ensuring that the hot and cold water pressures entering the mixing valve are the same or similar. This ensures that the hot and cold water can be mixed according to the set ratio of the mixing valve, increasing the effective angle adjustment range of the mixing valve handle to basically cover the entire angle range. Within the effective angle adjustment range, the mixed temperature of the hot and cold water changes uniformly with the angle of the mixing valve handle, improving the accuracy of the mixing valve handle in controlling the outlet water temperature, ensuring uniform outlet water temperature adjustment, and improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of mixing valve technology, specifically to a full-angle temperature pre-adjustment device and a mixing valve. Background Technology

[0002] A mixing valve is a device used to adjust the water temperature at the point of use. It mixes different proportions of cold and hot water to achieve a mixed water output at the target temperature. However, in actual use, the water pressure in the hot water pipe drops after passing through the hot water device before entering the mixing valve. Therefore, the pressure at the hot water inlet of the mixing valve is lower than the pressure at the cold water inlet, resulting in a significant pressure difference between the cold and hot water inlets. Because the pressure in the cold water pipe is greater than that in the hot water pipe, when the mixing valve is open, a connection is established between the cold and hot water pipes. At this time, the high-pressure cold water in the cold water pipe and the low-pressure hot water in the hot water pipe simultaneously flow into the mixing chamber.

[0003] When the mixing valve is in the middle adjustment angle, the opening degrees of the hot and cold water valve cores are the same. However, because the cold water pressure is greater than the hot water pressure, the cold water exerts significant pressure on the hot water, and may even force some hot water back into the hot water pipe. The mixing valve chamber is almost filled with cold water, causing a sharp drop in the outlet water temperature. Since the cold water has already suppressed the hot water, the range of further temperature drop when the mixing valve is adjusted further towards the cold water side is very small.

[0004] As the adjustment angle of the mixing valve gradually shifts towards the hot water side, the opening of the cold water valve core decreases, while the opening of the hot water valve core increases. This reduces the pressure of cold water on hot water, causing the proportion of hot water in the mixing valve chamber to increase. The pressure of the cold and hot water in the mixing valve chamber begins to reach a balance, allowing the cold and hot water in the mixing valve chamber to mix proportionally.

[0005] However, as the mixing valve is adjusted further towards the hot water side, the opening of the hot water valve core is significantly larger than that of the cold water valve core. The inflow of water to the hot water side is much greater than that to the cold water side, resulting in strong pressure from the hot water on the cold water. At this point, the mixing valve chamber is almost completely filled with hot water, causing a sharp rise in the outlet water temperature. Because the hot water has already suppressed the cold water, the range of further temperature increase when the mixing valve is adjusted further towards the hot water side is very small.

[0006] like Figure 1As shown, taking a common household manual mixing valve as an example: the handle angle adjustment range of the mixing valve is -45° to 45°, the hot water temperature is 60°C, and the cold water temperature is 10°C. The position corresponding to a handle angle of -45° corresponds to the maximum hot water temperature, and the position corresponding to a handle angle of 45° corresponds to the maximum cold water temperature. When the handle angle changes from 45° to 3°, the mixed water temperature only rises from 10° to 15°; when the handle angle changes from 3° to -10°, the mixed water temperature rises sharply from 15° to 55°; when the handle angle changes from -10° to -45°, the mixed water temperature only rises from 55° to 60°. The above data are experimental data from a common household manual mixing valve.

[0007] Figure 1 The curve showing the relationship between the handle angle of the mixing valve and the mixing temperature of hot and cold water is presented. Based on the changes in this curve, the adjustment of the mixing valve handle angle can be divided into three regions: the first adjustment region (45°~3°), the second adjustment region (3°~-10°), and the third adjustment region (-10°~-45°). In the curve showing the relationship between the handle angle of the mixing valve and the mixing temperature of hot and cold water, if the slope of the curve is less than the threshold slope, it is considered ineffective temperature adjustment. Figure 1 It can be seen that the curve slopes of the first and third angle adjustment regions are very small, while the curve slope of the second angle adjustment region is very large. The curve slopes of the first and third angle adjustment regions are less than the threshold slope, belonging to the ineffective temperature adjustment region. The curve slope of the second angle adjustment region is greater than the threshold slope, belonging to the effective temperature adjustment region. Figure 2 is a schematic diagram of the mixing valve handle angle adjustment; where Figure 2(a) is a schematic diagram of the maximum and minimum opening and closing angles of the mixing valve handle; Figure 2(b) is a schematic diagram of the maximum and minimum opening and closing angles of the mixing valve handle. Figure 1 As can be clearly seen from Figure 2, the effective temperature adjustment range of the mixing valve handle corresponds to the effective angle adjustment range of the mixing valve. Due to the large pressure difference between the cold and hot water inlets of the mixing valve, the effective temperature adjustment range of the mixing valve is very narrow, which in turn makes the effective angle adjustment range very small. Even a small change in the handle angle within the effective angle adjustment range can cause a significant fluctuation in the outlet water temperature. It is very difficult to adjust a precise temperature within such a small angle adjustment range.

[0008] In summary, the effective angle adjustment range of the existing mixing valve handle is too small, making it difficult to accurately adjust the outlet water temperature and resulting in a poor user experience.

[0009] In view of the above problems, there is an urgent need to provide a device that can ensure that cold and hot water can be mixed according to the set ratio of the mixing valve and increase the effective angle adjustment range of the mixing valve handle. Summary of the Invention

[0010] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a full-angle temperature pre-adjustment device and mixing valve, which increases the effective angle adjustment range of the mixing valve handle and ensures that the mixing temperature of hot and cold water changes uniformly with the change of the angle of the mixing valve handle.

[0011] To achieve the above-mentioned technical objectives, the present invention provides a full-angle temperature pre-regulation device, comprising:

[0012] A first pressure sensor and a second pressure sensor, wherein the first pressure sensor is installed on the hot water inlet pipe of the mixing valve and the second pressure sensor is installed on the cold water inlet pipe of the mixing valve.

[0013] At least one booster pump, said booster pump being installed on the inlet pipe on the side with lower water pressure; and

[0014] The control module is electrically connected to the first pressure sensor, the second pressure sensor, and the booster pump. The control module is used to control the operation of the booster pump based on the monitoring data of the first pressure sensor and the second pressure sensor, so that the cold and hot water pressures entering the mixing valve are the same or similar.

[0015] Preferably, the absolute value of the pressure difference between the cold and hot water entering the mixing valve is no greater than 30% of the pressure of the water flow on the side with higher pressure.

[0016] Preferably, the pressure sensor on the inlet pipe where the booster pump is located is installed at the outlet end of the booster pump to monitor the water pressure at the outlet end of the booster pump.

[0017] Preferably, the pressure sensor on the inlet pipe where the booster pump is located is set at the inlet end of the booster pump. The all-angle temperature pre-regulation device also includes a third pressure sensor, which is set at the outlet end of the booster pump to monitor the water pressure at the outlet end of the booster pump. The third pressure sensor is electrically connected to the control module, and the control module also dynamically adjusts the frequency or speed of the booster pump based on the monitoring data of the third pressure sensor and the pressure sensor on another pipe.

[0018] Preferably, the full-angle temperature pre-adjustment device includes two booster pumps, the first booster pump being installed on the hot water inlet pipe of the mixing valve, and the second booster pump being installed on the cold water inlet pipe of the mixing valve.

[0019] Both booster pumps are electrically connected to the control module. Based on the monitoring data from the first and second pressure sensors, the control module controls the booster pump on the side with lower water pressure to operate, so that the cold and hot water pressures entering the mixing valve are the same or similar.

[0020] Preferably, the first pressure sensor is located at the outlet of the first booster pump, and the second pressure sensor is located at the outlet of the second booster pump.

[0021] Preferably, the first pressure sensor is located at the water inlet of the first booster pump, and the second pressure sensor is located at the water inlet of the second booster pump.

[0022] Preferably, the full-angle temperature pre-conditioning device further includes two outlet pressure sensors;

[0023] The first outlet pressure sensor is located at the outlet end of the first booster pump, and the second outlet pressure sensor is located at the outlet end of the second booster pump.

[0024] Both outlet pressure sensors are electrically connected to the control module. The control module dynamically adjusts the frequency or speed of the booster pump based on the monitoring data from the outlet pressure sensor of the operating booster pump and the pressure sensor on another pipeline.

[0025] In addition, this utility model also provides a mixing valve, which includes the above-mentioned full-angle temperature pre-adjustment device.

[0026] Compared with the prior art, the beneficial effects of this utility model include:

[0027] This utility model provides a full-angle temperature pre-regulation device and mixing valve. Pressure sensors are installed on the two inlet pipes of the mixing valve to monitor the water pressure in the hot and cold water inlet pipes. The control module reads the monitoring data from the pressure sensors in real time, compares the water pressure in the hot and cold water inlet pipes, and controls a booster pump to pressurize the water in the inlet pipe with lower pressure, ensuring that the hot and cold water pressures entering the mixing valve are the same or similar. This guarantees that the hot and cold water can be mixed according to the set ratio of the mixing valve, increasing the effective angle adjustment range of the mixing valve handle to basically cover the entire angle range of the mixing valve handle. Within the effective angle adjustment range, the mixed temperature of the hot and cold water changes uniformly with the angle of the mixing valve handle, improving the accuracy of the mixing valve handle in controlling the outlet water temperature, ensuring uniform outlet water temperature adjustment, and improving the user experience.

[0028] By installing a pressure sensor at the outlet of the booster pump, when there are pressure fluctuations in the cold and hot water pipes themselves, or when there is an error between the actual booster pump pressure and the theoretical booster pump pressure, the pump can monitor and compare the water flow pressure at the outlet of the booster pump with the water flow pressure in another pipe in real time, and dynamically adjust the operating status of the booster pump to ensure that the cold and hot water pressures entering the mixing valve are the same or similar. Attached Figure Description

[0029] Figure 1 This is a schematic diagram illustrating the nonlinear variation of the outlet water temperature of an existing mixing valve with the angle of the mixing valve handle.

[0030] Figure 2 is a schematic diagram of the mixing valve handle angle adjustment; wherein, Figure 2(a) is a schematic diagram of the maximum and minimum opening and closing angles of the mixing valve handle; Figure 2(b) is a schematic diagram of the mixing valve handle angle adjustment. Figure 1 The effective temperature regulation zone in the diagram corresponds to the effective angle adjustment range of the mixing valve handle.

[0031] Figure 3 This is a schematic diagram of the full-angle temperature pre-adjustment device according to Embodiment 1 of this utility model;

[0032] Figure 4 This is a schematic diagram of the full-angle temperature pre-adjustment device according to Embodiment 2 of this utility model;

[0033] Figure 5 This is a schematic diagram of the full-angle temperature pre-adjustment device according to Embodiment 3 of this utility model;

[0034] Figure 6 This is a schematic diagram of the full-angle temperature pre-adjustment device of Embodiment 4 of this utility model;

[0035] Figure 7 This is a schematic diagram of the full-angle temperature pre-adjustment device of Embodiment 5 of this utility model;

[0036] Figure 8 This is a schematic diagram of the full-angle temperature pre-adjustment device of Embodiment Six of this utility model;

[0037] Figure 9 This is a schematic diagram of the effective temperature adjustment area of ​​the mixing valve handle after being controlled by the full-angle temperature pre-adjustment device according to the embodiment of this utility model;

[0038] Figure 10 This is a schematic diagram of the effective angle adjustment range of the mixing valve handle after being controlled by the full-angle temperature pre-adjustment device according to an embodiment of this utility model.

[0039] The meanings of the reference numerals in the attached figures are as follows:

[0040] 1. Hot water inlet pipe; 2. Cold water inlet pipe; 3. First pressure sensor; 4. Second pressure sensor; 5. Booster pump; 6. Mixing valve; 7. Third pressure sensor; 8. First booster pump; 9. Second booster pump; 10. First outlet pressure sensor; 11. Second outlet pressure sensor. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0042] The existing mixing valve 6 adjusts the supply of hot and cold water by changing the size of the cold and hot water inlets through the mixing valve core, so that the hot and cold water are mixed for consumers to use. However, due to the large pressure difference between the water flow at the cold and hot water inlets of the mixing valve 6, the cold and hot water entering the mixing valve 6 cannot be mixed in the set ratio. In addition, the effective angle adjustment range of the handle of the mixing valve 6 is too small, which results in the outlet water temperature of the mixing valve 6 not being uniformly adjusted, resulting in a poor user experience.

[0043] To solve the above problems, this utility model provides a full-angle temperature pre-adjustment device, comprising:

[0044] The first pressure sensor 3 is installed on the hot water inlet pipe 1 of the mixing valve 6, and the second pressure sensor 4 is installed on the cold water inlet pipe 2 of the mixing valve 6.

[0045] At least one booster pump 5 is installed on the inlet pipe on the side with lower water pressure; and

[0046] The control module is electrically connected to the first pressure sensor 3, the second pressure sensor 4, and the booster pump 5. The control module is used to control the operation of the booster pump 5 based on the monitoring data of the first pressure sensor 3 and the second pressure sensor 4, so that the cold and hot water pressures entering the mixing valve 6 are the same or similar.

[0047] To make the cold and hot water pressures entering the mixing valve 6 the same, that is, to make the absolute value of the pressure difference between the cold and hot water entering the mixing valve 0; to make the cold and hot water pressures entering the mixing valve 6 similar, that is, to make the absolute value of the pressure difference between the cold and hot water entering the mixing valve not 0 but not greater than 30% of the pressure of the water flow on the side with higher pressure. Example 1

[0048] Specifically, such as Figure 3 As shown, in a certain usage scenario, if the water pressure in the hot water inlet pipe 1 is always lower than the water pressure in the cold water inlet pipe 2, the booster pump 5 is installed on the hot water inlet pipe 1; and the first pressure sensor 3 is installed at the inlet end of the booster pump 5.

[0049] The control module reads the monitoring data from the first pressure sensor 3 and the second pressure sensor 4, calculates the pressure difference between the cold water and the hot water, and calculates the rate or frequency at which the booster pump 5 should operate to increase the water pressure in the hot water inlet pipe 1 to be the same as or similar to the water pressure in the cold water inlet pipe 2. Then the control module controls the booster pump 5 to operate at the calculated rate or frequency. Example 2

[0050] Specifically, such as Figure 4As shown, in a certain usage scenario, if the water pressure in the hot water inlet pipe 1 is always lower than the water pressure in the cold water inlet pipe 2, the booster pump 5 is installed on the hot water inlet pipe 1; and the first pressure sensor 3 is installed at the inlet end of the booster pump 5.

[0051] On the one hand, the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2 is not constant. On the other hand, there may be an error between the actual boosting value and the theoretical boosting value of the booster pump 5. In order to ensure that the pressure of cold water and hot water always remains the same or similar, this device also includes a third pressure sensor 7. The third pressure sensor 7 is set at the outlet end of the booster pump 5, and the control module is electrically connected to the third pressure sensor 7.

[0052] The control module reads the monitoring data of the first pressure sensor 3 and the second pressure sensor 4, calculates the pressure difference between cold water and hot water, and calculates the rate or frequency at which the booster pump 5 should operate to increase the water pressure in the hot water inlet pipe 1 to be the same as or similar to the water pressure in the cold water inlet pipe 2. Then the control module controls the booster pump 5 to operate at the calculated rate or frequency.

[0053] After the booster pump 5 starts working, the control module reads the third pressure sensor 7 and the second pressure sensor 4 in real time to determine whether the pressures of the two are the same or similar. If they are the same or similar, the current state of the booster pump 5 is maintained. If they are neither the same nor similar, the speed or frequency of the booster pump 5 is dynamically adjusted until the pressures of the cold water and the boosted hot water are the same or similar.

[0054] That is, the water flow pressure at the inlet and outlet of the booster pump 5 is monitored simultaneously by the first pressure sensor 3 and the third pressure sensor 7; the control module reads the monitoring data of the first pressure sensor 3 and the second pressure sensor 4 in real time, calculates the difference between the water flow pressure at the inlet of the booster pump 5 and the water flow pressure in the pipe on the other side, and determines whether the absolute value of the difference is greater than 30% of the water flow pressure in the pipe on the side with higher pressure; if it is greater than 30% of the water flow pressure in the pipe on the side with higher pressure, the booster pump 5 is controlled to start to increase the water flow pressure in the pipe on the side where the booster pump 5 is located, until the absolute value of the difference between the water flow pressure at the outlet of the booster pump 5 and the water flow pressure in the pipe on the other side is not greater than 30% of the water flow pressure in the pipe on the side with higher pressure, that is, the absolute value of the difference between the third pressure sensor 7 and the second pressure sensor 4 is not greater than 30% of the water flow pressure in the pipe on the side with higher pressure.

[0055] Meanwhile, during use, the control module reads the monitoring data of the third pressure sensor 7 and the second pressure sensor 4 in real time, and calculates the difference between the water flow pressure at the outlet of the booster pump 5 and the water flow pressure in the pipe on the other side in real time. It determines whether the absolute value of the difference is greater than 30% of the water flow pressure in the pipe with higher pressure. If it is not greater than 30% of the water flow pressure in the pipe with higher pressure, the booster pump 5 is controlled to maintain its current operating state; if it is greater than 30% of the water flow pressure in the pipe with higher pressure, the frequency or speed of the booster pump 5 is dynamically adjusted. Example 3

[0056] Specifically, such as Figure 5 As shown, in a certain usage scenario, if the water pressure in the hot water inlet pipe 1 is always lower than that in the cold water inlet pipe 2, the booster pump 5 is installed on the hot water inlet pipe 1.

[0057] In Example 2, three pressure sensors are required. In order to achieve the same effect while reducing costs, in this example, the first pressure sensor 3 is set at the outlet of the booster pump 5.

[0058] The control module reads the monitoring data of the first pressure sensor 3 and the second pressure sensor 4, calculates the pressure difference between cold water and hot water, and calculates the rate or frequency at which the booster pump 5 should operate to increase the water pressure in the hot water inlet pipe 1 to be the same as or similar to the water pressure in the cold water inlet pipe 2. Then the control module controls the booster pump 5 to operate at the calculated rate or frequency.

[0059] After the booster pump 5 starts working, the control module reads the monitoring data of the first pressure sensor 3 and the second pressure sensor 4 in real time to determine whether the pressures of the two are the same or similar. If they are the same or similar, the current state of the booster pump 5 is maintained. If they are neither the same nor similar, the speed or frequency of the booster pump 5 is dynamically adjusted until the pressures of the cold water and the boosted hot water are the same or similar. Example 4

[0060] Specifically, such as Figure 6 As shown, in a certain application scenario, it is impossible to predict the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2, or the relationship between the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2 is not constant. In this case, in order to adapt to the application environment more flexibly, this device includes two booster pumps 5. The first booster pump 8 is set on the hot water inlet pipe 1 of the mixing valve 6, and the second booster pump 9 is set on the cold water inlet pipe 2 of the mixing valve 6. Both booster pumps 5 are electrically connected to the control module. The first pressure sensor 3 is located at the inlet end of the first booster pump 8, and the second pressure sensor 4 is located at the inlet end of the second booster pump 9.

[0061] The control module reads the monitoring data from the first pressure sensor 3 and the second pressure sensor 4, calculates the pressure difference between the cold and hot water flow, and calculates the rate or frequency at which the booster pump 5 should operate to increase the water flow pressure in the hot water inlet pipe 1 to be the same as or close to the water flow pressure in the cold water inlet pipe 2. Then, the control module controls the booster pump 5 on the side with lower water flow pressure to operate at the calculated rate or frequency. Example 5

[0062] like Figure 7 As shown, the first booster pump 8 is installed on the hot water inlet pipe 1 of the mixing valve 6, and the second booster pump 9 is installed on the cold water inlet pipe 2 of the mixing valve 6. Both booster pumps 5 are electrically connected to the control module. The first pressure sensor 3 is located at the inlet end of the first booster pump 8, and the second pressure sensor 4 is located at the inlet end of the second booster pump 9.

[0063] Similarly, since the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2 is not constant, and the actual booster pressure value of the booster pump 5 may differ from the theoretical booster pressure value, in order to ensure that the pressure of cold water and hot water always remains the same or similar, this device also includes two outlet pressure sensors; the first outlet pressure sensor 10 is set at the outlet end of the first booster pump 8, and the second outlet pressure sensor 11 is set at the outlet end of the second booster pump 9; the control module is electrically connected to the first outlet pressure sensor 10 and the second outlet pressure sensor 11.

[0064] The control module reads the monitoring data of the first pressure sensor 3 and the second pressure sensor 4, calculates the pressure difference between cold water and hot water, and calculates the rate or frequency at which the booster pump 5 should operate to increase the water pressure in the hot water inlet pipe 1 to be the same as or similar to the water pressure in the cold water inlet pipe 2. Then the control module controls the booster pump 5 on the side with lower water pressure to operate at the calculated rate or frequency.

[0065] After the booster pump 5 starts working, the control module reads the monitoring data of the pressure sensor at the outlet of the booster pump 5 and the pressure sensor in another pipeline in real time, and determines whether the two pressures are the same or similar. If they are the same or similar, the current state of the booster pump 5 is maintained. If they are neither the same nor similar, the speed or frequency of the booster pump 5 is dynamically adjusted until the pressures of cold water and hot water are the same or similar. Example 6

[0066] Specifically, such as Figure 8As shown, in a certain application scenario, it is impossible to predict the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2, or the relationship between the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2 is not constant. In this case, in order to adapt to the application environment more flexibly, this device includes two booster pumps 5. The first booster pump 8 is installed on the hot water inlet pipe 1 of the mixing valve 6, and the second booster pump 9 is installed on the cold water inlet pipe 2 of the mixing valve 6. Both booster pumps 5 are electrically connected to the control module.

[0067] In Embodiment 5, four pressure sensors are provided. In order to achieve the same effect while reducing costs, in this embodiment, the first pressure sensor 3 is located at the outlet of the first booster pump 8, and the second pressure sensor 4 is located at the outlet of the second booster pump 9.

[0068] The control module reads the monitoring data of the first pressure sensor 3 and the second pressure sensor 4, calculates the pressure difference between cold water and hot water, and calculates the rate or frequency at which the booster pump 5 should operate to increase the water pressure in the hot water inlet pipe 1 to be the same as or similar to the water pressure in the cold water inlet pipe 2. Then the control module controls the booster pump 5 on the side with lower water pressure to operate at the calculated rate or frequency.

[0069] After the booster pump 5 starts working, the control module reads the monitoring data of the first pressure sensor 3 and the second pressure sensor 4 in real time to determine whether the pressures of the two are the same or similar. If they are the same or similar, the current state of the booster pump 5 is maintained. If they are neither the same nor similar, the speed or frequency of the booster pump 5 is dynamically adjusted until the pressures of cold water and hot water are the same or similar.

[0070] This utility model provides a mixing valve 6, which includes the aforementioned full-angle temperature pre-adjustment device. By setting the full-angle temperature pre-adjustment device in the mixing valve 6, hot and cold water are ensured to mix only when their pressures are the same or similar, thereby ensuring that hot and cold water can be mixed according to the set ratio of the mixing valve 6. This increases the effective angle adjustment range of the mixing valve 6 handle, basically covering the entire angle range of the mixing valve 6 handle. Moreover, within the effective angle adjustment range, the mixing temperature of hot and cold water changes uniformly with the change of the angle of the mixing valve 6 handle, improving the accuracy of the mixing valve 6 handle in controlling the outlet water temperature, ensuring uniform adjustment of the outlet water temperature, and improving the user experience.

[0071] Taking a common household manual mixing valve 6 as an example: the angle adjustment range of the handle of the mixing valve 6 is -45° to 45°. The hot water temperature is 60°C, and the cold water temperature is 10°C. The position corresponding to the -45° position of the handle corresponds to the maximum hot water temperature, and the position corresponding to the 45° position of the handle corresponds to the maximum cold water temperature. The control method of the full-angle temperature pre-adjustment device provided in this embodiment of the invention is used to mix and adjust the temperature of hot and cold water, such as... Figure 9As shown, when the handle angle changes from -45° to 45°, the mixed water temperature decreases uniformly from 60°C to 10°C as the handle angle of mixing valve 6 changes. This demonstrates that the hot and cold water mixing temperature changes uniformly with the handle angle of mixing valve 6. Figure 10 To and Figure 9 The corresponding diagram shows the angle change of the mixing valve 6 handle. Figure 9 and Figure 10 It can be seen that after using the full-angle temperature pre-regulation device to mix and regulate the temperature of cold and hot water, the effective angle adjustment range of the mixing valve 6 handle becomes larger, basically covering the full angle range of the mixing valve 6 handle. Within this range, by adjusting the angle of the mixing valve 6 handle, the outlet water temperature can be accurately adjusted to the required temperature.

[0072] The control method for the full-angle temperature pre-conditioning device includes the following steps:

[0073] S1. The water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2 of the mixing valve 6 are monitored by the first pressure sensor 3 and the second pressure sensor 4, respectively.

[0074] The water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2 of the mixing valve 6 can be monitored by a pressure sensor or by a flow meter.

[0075] S2. Based on the data monitored by the first pressure sensor 3 and the second pressure sensor 4, the control module compares the water flow pressure in the hot water inlet pipe 1 and the water flow pressure in the cold water inlet pipe 2, and controls the booster pump 5 to increase the pressure of the water flow in the inlet pipe on the side with lower pressure, so that the cold and hot water pressures entering the mixing valve 6 are the same or similar.

[0076] Specifically, after the water flow on the lower pressure side is pressurized, the absolute value of the difference between the cold water pressure and the hot water pressure entering the mixing valve 6 is no greater than 30% of the water flow pressure on the higher pressure side.

[0077] When the absolute value of the pressure difference between the cold and hot water entering the mixing valve 6 is [value missing], the cold and hot water pressures entering the mixing valve 6 are the same. At this time, the effective angle adjustment range of the mixing valve 6 handle is at its maximum, essentially covering the entire angle range of the mixing valve 6 handle. When the absolute value of the pressure difference between the cold and hot water entering the mixing valve 6 is not 0 and does not exceed 30% of the pressure of the water flow on the side with higher pressure, the cold and hot water pressures entering the mixing valve 6, although different, are similar. At this time, the effective angle adjustment range of the mixing valve 6 handle is also larger than the existing effective angle adjustment range of the mixing valve 6 handle. Therefore, the smaller the absolute value of the pressure difference between the cold and hot water entering the mixing valve 6, the larger the effective angle adjustment range of the mixing valve 6 handle.

[0078] Furthermore, when the water pressure in the hot water inlet pipe 1 and the water pressure in the cold water inlet pipe 2 are neither the same nor similar, that is, when the absolute value of the difference between the cold water pressure and the hot water pressure in the mixing valve 6 is greater than 30% of the water pressure on the side with higher pressure, the control module controls the booster pump 5 to start automatically. By controlling the frequency or speed of the booster pump 5, the water flow on the side with lower pressure is pressurized until the cold water pressure and the hot water pressure entering the mixing valve 6 are the same or similar, that is, the absolute value of the difference between the cold water pressure and the hot water pressure in the mixing valve 6 is not greater than 30% of the water pressure on the side with higher pressure.

[0079] The control module compares and analyzes the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2, respectively, monitored by the first pressure sensor 3 and the second pressure sensor 4. Based on the pressure difference between these two pressures, it calculates the frequency or speed of the booster pump 5. This control method requires high calculation accuracy from the control module, resulting in a high cost. Furthermore, due to water pressure fluctuations, the pressure difference between the hot water inlet pipe 1 and the cold water inlet pipe 2 also changes intermittently. Therefore, controlling the booster pump 5 using this method cannot promptly adjust its frequency or speed according to changes in the pressure difference.

[0080] To reduce the computational accuracy of the control module and improve the response speed of the booster pump 5 to pressure difference fluctuations, in some preferred embodiments, the control method of the full-angle temperature pre-regulation device further includes the following steps:

[0081] S10. Simultaneously monitor the water flow pressure at the inlet and outlet of the booster pump 5 using the second pressure sensor 4 and the third pressure sensor 7.

[0082] S20. Based on the monitoring data from the first pressure sensor 3 and the second pressure sensor 4, the control module calculates the difference between the water flow pressure at the inlet of the booster pump 5 and the water flow pressure in the pipe on the other side, and determines whether the absolute value of the difference is greater than 30% of the water flow pressure in the pipe on the side with higher pressure. If it is greater than 30% of the water flow pressure in the pipe on the side with higher pressure, the booster pump 5 is controlled to start and increase the water flow pressure in the pipe on the side where the booster pump is located, until the absolute value of the difference between the monitoring data of the first pressure sensor 3 and the third pressure sensor 7 is not greater than 30% of the water flow pressure in the pipe on the side with higher pressure, that is, the absolute value of the difference between the water flow pressure at the outlet of the booster pump 5 and the water flow pressure in the pipe on the other side is not greater than 30% of the water flow pressure in the pipe on the side with higher pressure.

[0083] Meanwhile, during use, the control module reads the water pressure at the outlet of booster pump 5 and the water pressure in the other pipe in real time, and calculates the difference between the water pressure at the outlet of booster pump 5 and the water pressure in the other pipe in real time. It then determines whether the absolute value of the difference is greater than 30% of the water pressure in the pipe with higher pressure. If it is not greater than 30% of the water pressure in the pipe with higher pressure, the booster pump 5 is controlled to maintain its current operating state. If it is greater than 30% of the water pressure in the pipe with higher pressure, the frequency or speed of booster pump 5 is dynamically adjusted.

[0084] The control module can directly acquire the boosted water pressure through the third pressure sensor 7. By comparing the boosted water pressure with the water pressure in the other pipe, it can directly determine the control scheme for the booster pump 5. There is no need to calculate the frequency or speed of the booster pump 5 from the difference between the water pressure in the hot water inlet pipe 1 and the cold water inlet pipe 2; the calculation accuracy requirement is low, and a standard control module can meet the requirement. Simultaneously, when the water pressure in the other pipe fluctuates, by comparing the boosted water pressure with the water pressure in the other pipe, the frequency or speed of the booster pump 5 can be adjusted in a timely manner to ensure that the pressure in the cold and hot pipes changes synchronously, keeping the pressure in the cold and hot pipes consistent at all times.

[0085] In addition, in a solar water heater, hot water is stored in a hot water tank, which is a sealed cavity; therefore, in another preferred embodiment, the booster pump 5 can also be directly installed in the hot water tank to boost the pressure of the hot water inlet pipe 1 by boosting the pressure of the hot water tank.

[0086] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A full-angle temperature pre-regulation device, characterized in that, include: A first pressure sensor and a second pressure sensor, wherein the first pressure sensor is installed on the hot water inlet pipe of the mixing valve and the second pressure sensor is installed on the cold water inlet pipe of the mixing valve. At least one booster pump is provided on the inlet pipe on the side with lower water pressure. and The control module is electrically connected to the first pressure sensor, the second pressure sensor, and the booster pump. The control module is used to control the operation of the booster pump based on the monitoring data of the first pressure sensor and the second pressure sensor, so that the cold and hot water pressures entering the mixing valve are the same or similar.

2. The all-angle temperature pre-regulation device according to claim 1, characterized in that, The absolute value of the pressure difference between the cold and hot water entering the mixing valve should not exceed 30% of the pressure of the water flow on the side with higher pressure.

3. The full-angle temperature pre-regulation device according to claim 1 or 2, characterized in that, The pressure sensor on the inlet pipe where the booster pump is located is set at the outlet end of the booster pump to monitor the water pressure at the outlet end of the booster pump.

4. The full-angle temperature pre-regulation device according to claim 1 or 2, characterized in that, The pressure sensor on the inlet pipe where the booster pump is located is set at the inlet end of the booster pump. The full-angle temperature pre-regulation device also includes a third pressure sensor, which is set at the outlet end of the booster pump to monitor the water pressure at the outlet end of the booster pump. The third pressure sensor is electrically connected to the control module. The control module also dynamically adjusts the frequency or speed of the booster pump based on the monitoring data of the third pressure sensor and the pressure sensor on another pipe.

5. The full-angle temperature pre-regulation device according to claim 1 or 2, characterized in that, The full-angle temperature pre-regulation device includes two booster pumps. The first booster pump is installed on the hot water inlet pipe of the mixing valve, and the second booster pump is installed on the cold water inlet pipe of the mixing valve. Both booster pumps are electrically connected to the control module. Based on the monitoring data from the first and second pressure sensors, the control module controls the booster pump on the side with lower water pressure to operate, so that the cold and hot water pressures entering the mixing valve are the same or similar.

6. The all-angle temperature pre-regulation device according to claim 5, characterized in that, The first pressure sensor is located at the outlet of the first booster pump, and the second pressure sensor is located at the outlet of the second booster pump.

7. The all-angle temperature pre-regulation device according to claim 5, characterized in that, The first pressure sensor is located at the inlet of the first booster pump, and the second pressure sensor is located at the inlet of the second booster pump.

8. The all-angle temperature pre-regulation device according to claim 7, characterized in that, The full-angle temperature pre-conditioning device also includes two outlet pressure sensors; The first outlet pressure sensor is located at the outlet end of the first booster pump, and the second outlet pressure sensor is located at the outlet end of the second booster pump. Both outlet pressure sensors are electrically connected to the control module. The control module dynamically adjusts the frequency or speed of the booster pump based on the monitoring data from the outlet pressure sensor of the operating booster pump and the pressure sensor on another pipeline.

9. A mixing valve, characterized in that, The mixing valve includes the full-angle temperature pre-regulation device as described in any one of claims 1-8.

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