Preconditioning pressure device and pressure mixing valve

Abstract

The application provides a pre-adjusting pressurizing device and a pressurizing mixing valve. The pre-adjusting pressurizing device comprises a first pressurizing pump and a second pressurizing pump. The first pressurizing pump is arranged on a hot water inlet pipeline of the mixing valve, and the second pressurizing pump is arranged on a cold water inlet pipeline of the mixing valve. The first pressurizing pump and the second pressurizing pump can increase the water inlet pressure of the hot water and the cold water to be the same or similar. When the water inlet pressure of the hot water and the cold water is the same or similar, the hot water and the cold water can be mixed according to the set proportion of the mixing valve, and the mixed temperature of the hot water and the cold water changes uniformly with the change of the handle angle of the mixing valve. Therefore, in the case of improving the water flow of the shower, the accuracy of the temperature control of the handle of the mixing valve on the water flow is ensured, the water temperature is uniformly adjusted, and the user's use feeling is improved.

Description

Technical Field

[0001] This invention relates to the field of mixing valve technology, specifically to a pre-adjustment boosting device and a boosting mixing valve. Background Technology

[0002] In residential water use scenarios, bathing is a core water consumption activity, and its user experience is particularly crucial. The stability and comfort of hot and cold water supply directly determine the user's bathing experience. Existing residential water supply systems suffer from the following technical problems:

[0003] First, most residential hot and cold water supplies use solar water heaters or natural gas water heaters in conjunction with the municipal cold water network. In this system, there is often a significant difference in the supply pressure of the hot and cold water. This uneven pressure can make it difficult for users to adjust the water temperature. For example, the mixing valve may have a small effective angle adjustment range, resulting in inconsistent and uneven water temperature, affecting not only ease of use but also potential safety hazards due to sudden temperature changes, ultimately impacting the user's bathing experience.

[0004] Secondly, the water pressure in municipal water supply networks is often low due to various factors such as network layout, peak water usage, and pipeline losses. When the external water pressure is low, the water flow from showerheads will be significantly insufficient, the water flow impact will be weakened, and the spray distance will be shortened, failing to create a comfortable showering water flow, resulting in a decreased showering experience and making it difficult to meet basic daily showering needs.

[0005] Third, in residential water use, multiple water-using devices are often turned on simultaneously, such as using the kitchen faucet and washing machine while showering. This sudden increase in total water consumption causes a sharp drop in water pressure, leading to a sudden decrease in the water flow from the showerhead, or even intermittent water flow. This results in a poor showering experience and fails to guarantee a stable showering experience for users in multi-point water usage scenarios.

[0006] These problems have long plagued users, especially severely impacting bathing water, becoming a critical technical pain point that urgently needs to be addressed in existing residential water supply systems. While existing technologies offer many solutions, none can simultaneously solve all three problems. For example, CN218210113U discloses a booster module and water heater. One solution involves installing a booster pump between the second cold water inlet and the water source. The boosted cold water is divided into two branches: one branch's cold water enters the water heater body, is heated to hot water, and then enters the mixing device; the other branch's cold water directly enters the mixing device. This solution only effectively boosts the pressure of the cold water entering the mixing valve, offering very limited boosting effect on the hot water entering the mixing valve, because the heat exchanger coils, internal valves, and flow-limiting structures in the water heater body significantly reduce water pressure. Another solution involves installing a booster pump between the warm water outlet of the mixing valve and the water outlet, i.e., adjusting the water temperature before boosting the pressure. However, this solution still cannot solve the problem of difficult water temperature adjustment.

[0007] In summary, there is an urgent need to design a pre-adjustment pressurization device and a pressurization mixing valve to solve the above three problems at the same time, so as to improve the comfort and stability of household water. Summary of the Invention

[0008] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a pre-adjustment booster device and a booster mixing valve, which can ensure accurate and uniform adjustment of the outlet water temperature while also guaranteeing the user's stable bathing needs in multi-point water use scenarios.

[0009] To achieve the above-mentioned technical objectives, the present invention provides a pre-regulating booster device, comprising: a first booster pump and a second booster pump. 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. The outlet pressures of both the first and second booster pumps are greater than 0.1 MPa, and the flow rates of both pumps do not exceed 4 m³ / s. 3 / h.

[0010] Preferably, the boosting pressure corresponding to the rated head of the first booster pump and the second booster pump is not less than the larger of the cold and hot water inlet pressures.

[0011] Preferably, the first booster pump and the second booster pump are centrifugal pumps or positive displacement pumps.

[0012] Preferably, all parameters of the first booster pump and the second booster pump are the same.

[0013] Preferably, the rated voltage of the first and second booster pumps does not exceed 220V, and the applicable voltage does not exceed 240V. To ensure electrical safety in the bathroom, the rated voltage of the first and second booster pumps is 24V.

[0014] Preferably, the pre-adjustment pressurization device further includes an on / off control module, which is electrically connected to the first pressurization pump and the second pressurization pump respectively. The on / off control module is used to synchronously control the on / off of the first pressurization pump and the second pressurization pump to simultaneously pressurize the hot water inlet pressure and the cold water inlet pressure of the mixing valve.

[0015] Preferably, the pre-adjustment booster device further includes a speed control module, which is electrically connected to the first booster pump and the second booster pump respectively. The speed control module is used to synchronously adjust the frequency or speed of the first booster pump and the second booster pump to synchronously adjust the cold and hot water pressures at the outlets of the first booster pump and the second booster pump.

[0016] Preferably, the pre-adjustment booster device further includes a first opening regulating valve and a second opening regulating valve for adjusting the opening of the pipe cross section. The first opening regulating valve is located in the middle section of the outlet pipe of the first booster pump, and the second opening regulating valve is located in the middle section of the outlet pipe of the second booster pump. The first opening regulating valve and the second opening regulating valve are controlled synchronously.

[0017] Preferably, the first opening regulating valve and the second opening regulating valve are synchronously controlled to have the same opening degree through a synchronization component.

[0018] In addition, the present invention also provides a pressure boosting mixing valve, which includes the above-mentioned pre-adjustment pressure boosting device and mixing valve.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] The pre-adjustment booster device provided by this invention increases the pumping power in the bathroom by adding a booster pump to the inlet pipe of the mixing valve. This allows for a larger water volume distribution in the bathroom when the water pressure is low or when multiple water usage points are in use simultaneously, increasing the shower head's water flow and ensuring a comfortable showering experience. Specifically, a first booster pump and a second booster pump are respectively installed on the two inlet pipes of the mixing valve. These pumps boost the inlet pressure of hot and cold water to the same or similar levels. When the inlet pressures of hot and cold water are the same or similar, they can be mixed according to the set ratio of the mixing valve. The mixed temperature of the hot and cold water changes uniformly with the angle of the mixing valve handle. Therefore, while increasing the shower head's water flow, it also ensures the accuracy of the mixing valve handle's control over the water temperature, achieving uniform temperature adjustment and improving the user's experience.

[0021] The pre-adjustment booster device provided by the present invention is characterized by installing the same first booster pump and second booster pump on the two inlet pipes of the mixing valve, and the booster pressure corresponding to the rated head of the two booster pumps is not less than the cold water inlet pressure. The first booster pump and the second booster pump are both in a low flow and high back pressure environment. Under this environment, the first booster pump and the second booster pump can increase the inlet pressure of hot water and cold water to a booster pressure close to the rated head. At this time, the outlet pressure of cold and hot water is the same or similar. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the pre-adjustment booster device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of a pre-adjustment booster device with a first opening adjustment valve and a second opening adjustment valve according to an embodiment of the present invention.

[0024] The meanings of the reference numerals in the attached figures are as follows:

[0025] 1. Hot water inlet pipe; 2. Cold water inlet pipe; 3. First booster pump; 4. Second booster pump; 5. First opening regulating valve; 6. Second opening regulating valve; 7. Mixing valve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention 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 and not intended to limit the invention.

[0027] When the water pressure is low or there are multiple water outlets in the house, the bathroom cannot receive a sufficient amount of water, resulting in a small water flow from the showerhead and a poor bathing experience. Furthermore, there is a significant pressure difference between the hot and cold water, preventing them from mixing in the mixing valve according to the set ratio. This leads to uneven water temperature regulation and a poor user experience.

[0028] To address the aforementioned problems, the present invention provides a pre-adjustment booster device, comprising a first booster pump 3 and a second booster pump 4, as shown below. Figure 1 As shown, the first booster pump 3 is installed on the hot water inlet pipe 1 of the mixing valve 7 to boost the hot water inlet pressure; the second booster pump 4 is installed on the cold water inlet pipe 2 of the mixing valve 7 to boost the cold water inlet pressure; the outlet pressure of both the first booster pump 3 and the second booster pump 4 is greater than 0.1 MPa, and the flow rate of both the first booster pump 3 and the second booster pump 4 does not exceed 4 m³ / h. The boosting pressure corresponding to the rated head of the first booster pump 3 and the second booster pump 4 is not less than the larger of the cold and hot water inlet pressures.

[0029] By adding a booster pump to the inlet pipe of the mixing valve 7, the pumping power at the bathroom end is increased. This allows for a larger water volume distribution at the bathroom end, even when water pressure is low or multiple water usage points are present in the house simultaneously, resulting in a larger shower head flow and improved showering comfort. Specifically, a first booster pump 3 and a second booster pump 4 are installed on the two inlet pipes of the mixing valve 7, respectively. The boosting pressure corresponding to the rated head of both booster pumps is not less than the cold water inlet pressure. Both booster pumps 3 and 4 operate in a low-flow, high-back-pressure environment. Under this environment, both booster pumps 3 and 4 can increase the inlet pressure of both hot and cold water to near the boosting pressure corresponding to their rated head, resulting in the same or similar outlet pressures for both hot and cold water. When the cold and hot water outlet pressures are the same or similar, the cold and hot water can be mixed according to the set ratio of the mixing valve 7. The temperature of the cold and hot water mixture changes uniformly with the change of the angle of the mixing valve 7 handle. Therefore, while increasing the water flow of the shower head, it also ensures the accuracy of the mixing valve 7 handle in controlling the water temperature, so that the water temperature can be uniformly adjusted and the user experience can be improved.

[0030] Preferably, the boosting pressure corresponding to the rated head of the first booster pump 3 and the second booster pump 4 is not less than the larger of the cold and hot water inlet pressures. More preferably, the boosting pressure corresponding to the rated head of the first booster pump 3 and the second booster pump 4 is the same.

[0031] The first booster pump 3 and the second booster pump 4 are centrifugal pumps or positive displacement pumps, with the positive displacement pump preferably being a diaphragm pump; all parameters of the first booster pump 3 and the second booster pump 4 are identical. The inlet pipe of the mixing valve 7 restricts the booster pumps to a low flow rate and high back pressure condition. Under this condition, the two booster pumps of the same model and speed operate at essentially the same flow rate due to consistent pipeline resistance, and will stably operate in the high head range close to the shut-off point. At this time, the total outlet pressure that each booster pump can output has a fixed upper limit. When the hot water inlet pressure is low, the first booster pump 3 automatically outputs a larger boost value to make up for the pressure difference; when the cold water inlet pressure is high, the second booster pump automatically reduces the boost value to avoid exceeding the upper limit. Relying on the self-adjusting pressure characteristics of the booster pumps, ultimately, no matter how much the cold and hot water inlet pressures differ, the total outlet pressure will be forcibly leveled and kept consistent. Therefore, when the first booster pump 3 and the second booster pump 4 pressurize hot water and cold water respectively in a low flow and high back pressure environment, the cold and hot water outlet pressures of the first booster pump 3 and the second booster pump 4 are the same or similar.

[0032] The rated voltage of the first booster pump 3 and the second booster pump 4 shall not exceed 220V, and the applicable voltage shall not exceed 240V. To ensure electrical safety in the bathroom, it is more preferable that the rated voltage of the first booster pump and the second booster pump be 24V.

[0033] The two booster pumps need to work synchronously to ensure uniform temperature regulation of the outlet water. Therefore, to facilitate the synchronous control of the two booster pumps, an on / off control module can be set in the pre-adjustment booster device. The on / off control module is electrically connected to the first booster pump 3 and the second booster pump 4 respectively. The on / off control module is used to synchronously control the on / off of the first booster pump 3 and the second booster pump 4 to simultaneously boost the hot water inlet pressure and the cold water inlet pressure of the mixing valve 7.

[0034] When in operation, turn on the start button of the start / stop control module, and the first booster pump 3 and the second booster pump 4 will start simultaneously to boost the pressure, raising the inlet pressure of hot water and cold water to the same or similar levels; when finished, turn off the start button of the start / stop control module, and the first booster pump 3 and the second booster pump 4 will stop boosting simultaneously.

[0035] Preferably, the opening and closing control module can be linked with the control handle of the mixing valve 7, so that the opening and closing control module is activated simultaneously when the water outlet is opened.

[0036] Furthermore, a speed control module can be set in the pre-adjustment booster device. The speed control module is electrically connected to the first booster pump 3 and the second booster pump 4 respectively. The speed control module is used to synchronously adjust the frequency or speed of the first booster pump 3 and the second booster pump 4 so as to synchronously adjust the cold and hot water pressures at the outlets of the first booster pump 3 and the second booster pump 4.

[0037] Specifically, after the first booster pump 3 and the second booster pump 4 start working, if it is found that the outlet pressure of the mixing valve 7 is too high, the frequency or speed of the first booster pump 3 and the second booster pump 4 is reduced synchronously through the speed control module, so that the cold and hot water pressures at the outlet of the first booster pump 3 and the second booster pump 4 are reduced synchronously, and the outlet pressure of the mixing valve 7 is reduced as a whole while ensuring the uniform adjustment of the outlet water temperature.

[0038] Conversely, if the outlet pressure of the mixing valve 7 is found to be low, the frequency or speed of the first booster pump 3 and the second booster pump 4 will be increased synchronously through the speed control module, so that the cold and hot water pressures at the outlets of the first booster pump 3 and the second booster pump 4 will be increased synchronously, thereby increasing the overall outlet pressure of the mixing valve 7 while ensuring uniform adjustment of the outlet water temperature.

[0039] Alternatively, a first opening regulating valve 5 and a second opening regulating valve 6 for adjusting the pipe cross-sectional opening can be installed in the pre-adjusting pressurization device, such as... Figure 2 As shown, the first opening regulating valve 5 is located in the middle section of the outlet pipe of the first booster pump 3, and the second opening regulating valve 6 is located in the middle section of the outlet pipe of the second booster pump 4. The first opening regulating valve 5 and the second opening regulating valve 6 are controlled synchronously.

[0040] Specifically, the first opening regulating valve 5 is located in the middle section of the outlet pipe of the first booster pump 3, dividing the outlet pipe of the first booster pump 3 into an upstream outlet pipe and a downstream outlet pipe. The pipe diameters of the upstream and downstream outlet pipes are the same, and the opening of the first opening regulating valve 5 is smaller than the diameter of the outlet pipe. As the pressurized hot water flows through the first opening regulating valve 5 into the downstream outlet pipe, pressure is released in the downstream outlet pipe because the water flows directly from the smaller channel into the larger channel. Therefore, by adjusting the opening of the first opening regulating valve 5, the hot water inlet pressure of the mixing valve 7 can be adjusted. The cold water inlet pressure of the mixing valve 7 is also synchronously adjusted through the second opening regulating valve 6.

[0041] If the outlet pressure of mixing valve 7 is found to be high, the opening of the first opening regulating valve 5 and the second opening regulating valve 6 is increased simultaneously, causing the cold and hot water pressures at the outlets of the first booster pump 3 and the second booster pump 4 to decrease synchronously. This achieves an overall reduction in the outlet pressure of mixing valve 7 while ensuring uniform adjustment of the outlet water temperature. Conversely, if the outlet pressure of mixing valve 7 is found to be low, the opening of the first opening regulating valve 5 and the second opening regulating valve 6 is decreased simultaneously, causing the cold and hot water pressures at the outlets of the first booster pump 3 and the second booster pump 4 to increase synchronously. This achieves an overall increase in the outlet pressure of mixing valve 7 while ensuring uniform adjustment of the outlet water temperature.

[0042] Preferably, a synchronization component can be set to synchronously control the first opening regulating valve 5 and the second opening regulating valve 6 to ensure that the valve openings of the first opening regulating valve 5 and the second opening regulating valve 6 are always consistent.

[0043] The present invention also provides a pressure boosting mixing valve, which includes a pre-adjustment pressure boosting device and a mixing valve 7. The first pressure boosting pump 3 in the pre-adjustment pressure boosting device is installed on the hot water inlet pipe 1 of the mixing valve 7, and the outlet of the first pressure boosting pump 3 is connected to the hot water inlet of the mixing valve 7. The second pressure boosting pump 4 is installed on the cold water inlet pipe 2 of the mixing valve 7, and the outlet of the second pressure boosting pump 4 is connected to the cold water inlet of the mixing valve 7.

[0044] During operation, hot water from the hot water pipe first enters the first booster pump 3, where it is pressurized to a pressure close to the rated head. Cold water from the cold water pipe first enters the second booster pump 4, where it is pressurized to a pressure close to the rated head. The pressurized hot and cold water pressures are the same or similar, and they enter the mixing valve 7 from the cold and hot water inlets respectively for isobaric mixing. Under isobaric conditions, the hot and cold water can mix according to the set ratio of the mixing valve 7. The mixed temperature changes uniformly with the angle of the mixing valve 7 handle, resulting in uniform water temperature regulation and improved user experience.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. 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 invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A pre-adjustment booster device, characterized in that, include: A first booster pump (3) and a second booster pump (4) are installed. The first booster pump (3) is installed on the hot water inlet pipe (1) of the mixing valve (7), and the second booster pump (4) is installed on the cold water inlet pipe (2) of the mixing valve (7). The outlet pressure of both the first booster pump (3) and the second booster pump (4) is greater than 0.1 MPa, and the flow rate of both the first booster pump (3) and the second booster pump (4) does not exceed 4 m³ / s. 3 / h.

2. The pre-adjustment booster device according to claim 1, characterized in that, The boosting pressure corresponding to the rated head of the first booster pump (3) and the second booster pump (4) is not less than the larger value of the cold and hot water inlet pressure.

3. The pre-adjustment booster device according to claim 1, characterized in that, The first booster pump (3) and the second booster pump (4) are centrifugal pumps or positive displacement pumps.

4. The pre-adjustment booster device according to claim 1, characterized in that, All parameters of the first booster pump (3) and the second booster pump (4) are the same.

5. The pre-adjustment booster device according to claim 4, characterized in that, The rated voltage of the first booster pump (3) and the second booster pump (4) shall not exceed 220V, and the applicable voltage shall not exceed 240V.

6. The pre-adjustment booster device according to claim 1, characterized in that, The pre-adjustment pressurization device also includes an on / off control module, which is electrically connected to the first pressurization pump (3) and the second pressurization pump (4) respectively. The on / off control module is used to synchronously control the opening and closing of the first pressurization pump (3) and the second pressurization pump (4) to simultaneously pressurize the hot water inlet pressure and the cold water inlet pressure of the mixing valve (7).

7. The pre-adjustment booster device according to claim 1, characterized in that, The pre-adjustment booster device also includes a speed control module, which is electrically connected to the first booster pump (3) and the second booster pump (4) respectively. The speed control module is used to synchronously adjust the frequency or speed of the first booster pump (3) and the second booster pump (4) to synchronously adjust the cold and hot water pressures at the outlets of the first booster pump (3) and the second booster pump (4).

8. The pre-adjustment booster device according to claim 1, characterized in that, The pre-adjustment booster device also includes a first opening regulating valve (5) and a second opening regulating valve (6) for adjusting the opening of the pipe section. The first opening regulating valve (5) is located in the middle section of the outlet pipe of the first booster pump (3), and the second opening regulating valve (6) is located in the middle section of the outlet pipe of the second booster pump (4). The first opening regulating valve (5) and the second opening regulating valve (6) are controlled synchronously.

9. The pre-adjustment booster device according to claim 8, characterized in that, The first opening regulating valve (5) and the second opening regulating valve (6) are synchronously controlled to have the same opening degree through a synchronization component.

10. A pressure-boosting mixing valve, characterized in that, The booster mixing valve includes a pre-adjustment booster device and a mixing valve (7) as described in any one of claims 1-8.

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