Preheating and pressurizing connecting valve, water system, preheating method and pressurizing method

Abstract

The present invention discloses a connecting valve for preheating and pressurizing, a water system, a preheating method and a pressurizing method, comprising a valve core and a valve body, wherein the valve body comprises a water flow hole, a hot water port and a cold water port, wherein the water flow hole is arranged between the hot water port and the cold water port, and the valve core is used to block the water flow hole, and the valve body comprises a controller, a first flow sensor and a small hole, wherein the controller is used to control the valve core to block or open the water flow hole; the first flow sensor is arranged in the valve body, and is used to detect the flow rate of water in the valve body; when the valve core closes the water flow hole, the small hole is formed between the valve core and the water flow hole, the small hole connects the hot water port and the cold water port, and the inner diameter of the small hole is smaller than the inner diameter of the water flow hole; the connecting valve and the water system will not discharge cold water when using hot water, and the hot water will not be continuously circulated, and the safety is high.

Description

Technical Field

[0001] The invention relates to a connecting valve for preheating and pressurizing, a water channel system, a preheating method and a pressurizing method. Background Art

[0002] At present, water heaters with zero cold water function and their water system ensure the convenience of using hot water in home life. Its working principle is: when the user is not using hot water, the water heater detects that the water temperature in the pipe is lower than the set temperature and starts the circulating water pump in the water heater. After the water pump is running, the water in the pipe will flow into the water heater for heating. After the water in the pipe is heated to the specified temperature, the water pump stops running and the water heater also stops working. The water heater with zero cold water function allows users to use hot water as soon as they turn it on without waiting.

[0003] For households that do not follow the return pipe, the current gas water heater will find the faucet at the farthest end of the waterway in the home during installation, and connect the hot water pipe to the cold water pipe under this faucet. In order to prevent cold water from flowing back into the hot water pipe when using hot water, a one-way valve is generally installed here. However, this connection method needs to meet a condition, that is: the water resistance Z1 of the hot water pipe to the last faucet must be greater than the water resistance 72 of the cold water pipe to the last faucet. Now, in many households, the water resistance 21 of the hot water pipe connected to the last faucet is smaller than the water resistance 2 of the cold water pipe connected to the last faucet. In this case, at the last faucet, when the user turns on the cold water, part of the water flow will flow from the cold water waterway, and the other part will flow from the hot water waterway, or even all the water will flow from the hot water waterway. This will cause the water heater to start, and the user will actually get hot water when he wants to use cold water, causing great trouble to the user.

[0004] In current water heater technology, water pumps are often used to pressurize the incoming water flow. However, when the user uses water under low water pressure, the water pump starts to operate and start pressurization. At this time, the hot water that originally flowed out of the water heater will also re-enter the water inlet of the water heater through the circulation loop, and then be heated in the water heater. Since the incoming water temperature is relatively high at this time, the outlet water temperature of the water heater will be higher. In this way, when the pressurization function is turned on, the hot water will be continuously circulated, causing the water temperature to greatly exceed the safe temperature. At the same time, due to the suction effect, the user's final water outlet flow rate will actually be greatly reduced, and the pressurization effect cannot be achieved. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects in the prior art that hot water is produced when cold water is desired, the hot water is continuously circulated, and the water output safety is low. A connecting valve for preheating and pressurizing, a water system, a preheating method and a pressurizing method are provided.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a connecting valve for preheating and boosting, comprising a valve core and a valve body, wherein the valve body comprises a water flow hole, a hot water port and a cold water port, wherein the water flow hole is arranged between the hot water port and the cold water port, and the valve core is used to block the water flow hole, and the valve body comprises a controller, a first flow sensor and a small hole, wherein the controller is used to control the valve core to block or open the water flow hole; the first flow sensor is arranged in the valve body, and is used to detect the flow rate of water in the valve body; when the valve core closes the water flow hole, the small hole is formed between the valve core and the water flow hole, the small hole connects the hot water port and the cold water port, and the inner diameter of the small hole is smaller than the inner diameter of the water flow hole.

[0008] In the present technical solution, the controller controls the valve core to block or open the water flow hole. On the one hand, when the user uses cold water, the controller can be used to control the valve core to block the water flow hole to prevent hot water from flowing out together with the cold water through the connecting valve. On the other hand, the controller can be used for remote control to realize remote automatic control of the connecting valve. By arranging a first flow sensor and a small hole on the circulation valve, the connecting valve can detect the flow rate of water through the first flow sensor, so that the gas water heater can control the valve core to block the water flow hole under the boost function, and the hot water will not be continuously circulated through the connecting valve, and the water outlet safety is higher.

[0009] Preferably, the connecting valve further comprises a solenoid valve coil, which cooperates with the valve core and controls the valve core to block or open the water flow hole by turning on and off the power.

[0010] In this technical solution, the solenoid valve coil cooperates with the valve core to control the valve core to block or open the water flow hole by turning on and off the power. The speed is fast and the state of the connection valve can be quickly switched remotely. At the same time, the solenoid valve coil is lightweight and easy to install.

[0011] Preferably, the connecting valve further comprises a reset member, which is connected to the valve core and applies force to the valve core so that the valve core blocks the water flow hole.

[0012] In the present technical solution, the connecting valve also includes a reset member, through which force is applied so that the valve core can block the water flow hole in a natural state, ensuring that the valve core can be more stable when controlled to block the water flow hole, and the reset member is simple to use and assemble.

[0013] Preferably, the connecting valve further comprises a one-way valve, and the one-way valve is arranged between the water flow hole and the cold water inlet.

[0014] In this technical solution, a one-way valve is used on the connecting valve to prevent water from flowing back when the valve is opened; at the same time, the one-way valve is arranged between the water flow hole and the cold water outlet to further prevent cold water from flowing back into the water flow hole.

[0015] Preferably, the water flow hole is arranged on a horizontal plane, both ends of the horizontal plane are respectively connected with inclined planes, the two inclined planes are respectively connected to the inner surface of the valve body, and the angles between the two inclined planes and the horizontal plane are both obtuse angles.

[0016] In the present technical solution, the water flow hole is arranged on a horizontal plane, and has inclined surfaces at both ends, which are obtuse angles with the horizontal plane. The inclined surfaces are connected to the inner surface of the valve body. The two inclined surfaces and the horizontal plane block the water flow at both ends of the valve body. The water flow hole is arranged on the horizontal plane. The setting of the inclined surface can effectively buffer the speed of water flow through the water flow hole, prevent partial water backflow, increase the service life of the connecting valve, and at the same time improve the safety of the water system.

[0017] Preferably, a moving channel for the valve core to move is provided in the valve body, and the surface of the valve core has an annular groove, and a sealing ring is sleeved on the annular groove, and the sealing ring is sealed with the moving channel on the peripheral side of the valve core.

[0018] In this technical solution, the valve core is provided with an annular groove, on which a sealing ring is mounted, and the sealing ring is sealed to the moving channel around the valve core, so that when water flows through the connecting valve, it will not flow through the valve core to other places, thereby ensuring the stability of the connecting valve.

[0019] Preferably, the controller is used to receive a flow signal from the first flow sensor.

[0020] In the technical solution, the controller receives the signal of the first flow sensor, directly receives the flow signal through the first flow sensor, and controls the valve core in time.

[0021] The present invention also provides a water circuit system of a preheating and pressurizing connecting valve, which includes a gas water heater and a plurality of water outlet pipes from the far end to the near end of the gas water heater, the gas water heater includes a water outlet and a water inlet, the water circuit system includes the preheating and pressurizing connecting valve described in any one of the above items, the connecting valve is connected to the water outlet pipe at the farthest end; the water circuit system also includes a host communication module, the host communication module is arranged on the gas water heater, and the host communication module and the controller transmit signals to each other.

[0022] In the present technical solution, a connecting valve is installed at the farthest water outlet pipe of the water system, and a valve core is provided on the connecting valve. The valve core can use the host communication module to issue instructions, the gas water heater starts to operate, the first flow sensor detects the flow signal, the controller receives the flow signal, and controls the valve core in time. The water system using the connecting valve solves the problem of not causing hot water to be output when the user uses cold water; closing the circulation connecting valve when the boost function is turned on can prevent the hot water from being continuously circulated, thereby improving the safety of the water system.

[0023] Preferably, the water system further comprises a circulation pump, which is arranged inside the gas water heater and is used to pressurize the water in the gas water heater.

[0024] In the present technical solution, the circulation pump can pressurize the water in the gas water heater, and the circulation pump is arranged inside the gas water heater to protect the operation of the circulation pump.

[0025] Preferably, the water system further includes a second flow sensor, the second flow sensor is connected to the circulation pump, and the second flow sensor is used to detect the flow rate of water in the circulation pump.

[0026] In this technical solution, the second flow sensor is connected to the circulation pump, and can detect the accuracy of the flow signal generated by the circulation pump when the circulation pump pressurizes the water. Combined with the use of the first flow sensor, the entire system is more stable and safe.

[0027] Preferably, the water system further includes a temperature sensor, and the temperature sensor is connected to the water outlet.

[0028] In the present technical solution, the water system also includes a temperature sensor to detect the outlet water temperature of the water outlet to ensure that the outlet water temperature can be monitored in the system.

[0029] The present invention also provides a preheating method for a preheating and pressurizing connecting valve, the preheating method is used to control the water system of the preheating and pressurizing connecting valve as described in any of the above items, the water system also includes a circulation pump, the circulation pump is arranged inside the gas water heater, the circulation pump is used to pressurize the water in the gas water heater, the preheating method includes the following steps: starting a preheating circulation mode; the circulation pump outputs a first flow signal; the first flow sensor receives the first flow signal within a specified time; the controller controls the valve core to open the water flow hole; and ends the preheating circulation mode.

[0030] In this technical solution, the circulation pump outputs a first flow signal, the first flow sensor receives the first flow signal within a specified time, and the controller controls the valve core to open the water flow hole. Through the cooperation of the circulation pump, the first flow sensor and the controller, the valve core is opened or closed by remote communication control, while ensuring the normal operation of the preheating function and optimizing the water system.

[0031] Preferably, the water system further includes a temperature sensor, and the temperature sensor is connected to the water outlet. The step of starting the preheating cycle mode further includes: the user clicks to enter the preheating mode, or the temperature sensor detects that the water temperature is less than a preset temperature.

[0032] In this technical solution, the preheating mode can be entered manually or automatically by clicking or detecting with a temperature sensor, thereby improving the degree of automation.

[0033] Preferably, the water system also includes a second flow sensor, which is connected to the circulation pump and used to detect the flow rate of water in the circulation pump. The step of the circulation pump outputting a first flow signal also includes: the circulation pump generates the first flow signal; the second flow sensor detects the first flow signal; if the first flow signal is consistent with the set signal, the first flow sensor receives the first flow signal within a specified time, and the controller controls the valve core to open the water flow hole; if the first flow signal is inconsistent with the set signal, it is terminated.

[0034] In the present technical solution, the second flow sensor detects the first flow signal. If the first flow signal is consistent with the set signal, the controller controls the valve core to open the water flow hole. The second flow sensor detects whether the flow rate of the water flow of the circulating pump is consistent with the set signal to ensure the stability of the system and prevent the preheating function from malfunctioning. If not, it can be terminated in time.

[0035] Preferably, the step of ending the preheating cycle mode further includes: the user cancels entering the preheating mode, or the water outlet temperature detected by the temperature sensor is greater than or equal to a preset temperature.

[0036] In this technical solution, the preheating mode can be ended manually or automatically by clicking or detecting with a temperature sensor, thereby improving the degree of automation.

[0037] The present invention also provides a pressurizing method for a preheating and pressurizing connecting valve, the pressurizing method is used to control the water system of the preheating and pressurizing connecting valve as described in any of the above-mentioned items, the water system also includes a circulating pump, the circulating pump is arranged inside the gas water heater, the circulating pump is used to pressurize the water in the gas water heater, the pressurizing method includes the following steps: starting the boosting mode; the circulating pump outputs a second flow signal; the first flow sensor receives the second flow signal within a specified time; the controller controls the valve core to close the water flow hole; ending the boosting mode; the flow signal received by the first flow sensor for a period of time is 0; the controller controls the valve core to open the water flow hole.

[0038] In the present technical solution, the circulating pump outputs a second flow signal, the first flow sensor receives the second flow signal within a specified time, and the controller controls the valve core to close the water flow hole, so that in the boost mode, the connecting valve cannot pass water, preventing hot water from returning to the gas water heater from the connecting valve and continuing to be circulated and heated, thereby improving the safety of the system; the first flow sensor receives a flow signal of 0 for a period of time, and then controls the valve core to open the water flow hole to prepare for the next status judgment.

[0039] Preferably, the water system also includes a second flow sensor, which is connected to the circulation pump and used to detect the flow rate of water in the circulation pump. The step of the circulation pump outputting a flow signal also includes: the circulation pump generates a second flow signal; the second flow sensor detects the second flow signal; if the second flow signal is consistent with the set signal, the first flow sensor receives the second flow signal within a specified time, and the controller controls the valve core to close the water flow hole; if the second flow signal is inconsistent with the set signal, it is terminated.

[0040] In the present technical solution, the second flow signal is detected by the second flow sensor. If the second flow signal is consistent with the set signal, the controller controls the valve core to close the water flow hole. The second flow sensor is used to detect whether the flow rate of the water flow of the circulating pump is consistent with the set signal to ensure the stability of the system and prevent the boost function from malfunctioning. If it is inconsistent, it can be terminated in time.

[0041] The positive and progressive effects of the present invention are: the controller controls the valve core to block or open the water flow hole. On the one hand, when the user uses cold water, the controller can be used to control the valve core to block the water flow hole to prevent hot water from flowing out together with the cold water through the connecting valve. On the other hand, the controller can be used for remote control to achieve remote automatic control of the connecting valve. By arranging a first flow sensor and a small hole on the circulation valve, the connecting valve can detect the flow rate of water through the first flow sensor, so that the gas water heater can control the valve core to block the water flow hole under the boost function, and hot water will not be continuously circulated through the connecting valve, and the water output safety is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a vertical view of the connecting valve for preheating and boosting in Example 1 of the present invention.

[0043] Figure 2 This is an exploded view of the connecting valve for preheating and pressurization of Example 1 of the present invention.

[0044] Figure 3 This is a front cross-sectional view of the open state of the preheating and pressurizing connection valve of Example 1 of the present invention.

[0045] Figure 4 This is a front cross-sectional view of the closed state of the preheating and pressurizing connecting valve of Example 1 of the present invention.

[0046] Figure 5 This is a schematic diagram of the structure of the water system of Example 2 of the present invention.

[0047] Figure 6 This is a flow chart of the preheating method of Example 3 of the present invention.

[0048] Figure 7 This is a flow chart of the pressurization method of Example 4 of the present invention.

[0049] Figure 8 This is a coordinate diagram of the change of the 3rd flow square wave with time in Example 3 of the present invention.

[0050] Description of reference numerals:

[0051] Connecting valve 1

[0052] Spool 11

[0053] Annular groove 111

[0054] Seal 112

[0055] Valve body 12

[0056] Water flow hole 121

[0057] Hot water outlet 122

[0058] Cold water outlet 123

[0059] Horizontal plane 124

[0060] Incline 125

[0061] Mobile channel 126

[0062] Controller 13

[0063] The first flow sensor 14

[0064] Small hole 15

[0065] Solenoid valve coil 16

[0066] Reset 17

[0067] Check valve 18

[0068] Gas water heater 2

[0069] Water outlet 21

[0070] Water inlet 22

[0071] Water outlet pipe 3

[0072] Host communication module 4

[0073] Circulation pump 5

[0074] Second flow sensor 6

[0075] Temperature sensor 7 DETAILED DESCRIPTION

[0076] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0077] Example 1

[0078] like Figures 1 to 4As shown, the present invention provides a connecting valve for preheating and boosting, including a valve core 11 and a valve body 12. The valve body 12 includes a water flow hole 121, a hot water port 122 and a cold water port 123. The water flow hole 121 is arranged between the hot water port 122 and the cold water port 123. The valve core 11 is used to block the water flow hole 121. The connecting valve 1 includes a controller 13, a first flow sensor 14 and a small hole 15. The controller 13 is used to control the valve core 11 to block or open the water flow hole 121; the first flow sensor 14 is arranged in the valve body 12, and is used to detect the flow rate of water in the valve body 12; when the valve core 11 closes the water flow hole 121, a small hole 15 is formed between the valve core 11 and the water flow hole 121, and the small hole 15 connects the hot water port 122 and the cold water port 123. The inner diameter of the small hole 15 is smaller than the inner diameter of the water flow hole 121. In this embodiment, the small hole 15 is provided on the valve core 11. In order to achieve blocking, a certain flow rate needs to pass through the small hole 15. Those skilled in the art can design a small hole 15 of corresponding size according to the requirements of the present invention. The connecting valve 1 also includes a solenoid valve coil 16, which cooperates with the valve core 11 and controls the valve core 11 to block or open the water flow hole 121 by turning on and off the power. The connecting valve 1 also includes a reset member 17, which is connected to the valve core 11 and applies force to the valve core 11 so that the valve core 11 blocks the water flow hole 121. Specifically, the reset member 17 is a spring. When the solenoid valve coil 16 is energized, the reset member 17 is compressed and the valve core 11 opens the water flow hole 121; when the solenoid valve is de-energized, the reset member 17 returns to a normal state and the valve core 11 blocks the water flow hole 121. The connecting valve 1 also includes a one-way valve 18, which is arranged between the water flow hole 121 and the cold water port 123. The controller 13 is used to receive the flow signal of the first flow sensor 14.

[0079] Among them, the controller 13 controls the valve core 11 to block or open the water flow hole 121. On the one hand, when the user uses cold water, the controller 13 can be used to control the valve core 11 to block the water flow hole 121 to prevent hot water from flowing out with cold water through the connecting valve 1. On the other hand, the controller 13 can be used for remote control to realize remote automatic control of the connecting valve 1. By setting the first flow sensor 14 and the small hole 15 on the circulation valve, the connecting valve 1 can detect the flow of water through the first flow sensor 14, so that the gas water heater 2 can control the valve core 11 to block the water flow hole 121 under the boost function through the controller 13, and the hot water will not be continuously circulated through the connecting valve 1, and the water outlet safety is higher. The solenoid valve coil 16 cooperates with the valve core 11 to control the valve core 11 to block or open the water flow hole 121 by turning on and off the power, with a fast speed, so as to realize remote and rapid switching of the state of the connecting valve 1. At the same time, the solenoid valve coil 16 is light in appearance and easy to install. The connecting valve 1 also includes a reset member 17, through which the reset member 17 applies force so that the valve core 11 can block the water flow hole 121 in a natural state, ensuring that the valve core 11 can be more stable when it is controlled to block the water flow hole 121, and the reset member 17 is easy to use and assemble. The one-way valve 18 is used on the connecting valve 1 to prevent water from flowing back when the valve is opened; at the same time, the one-way valve 18 is arranged between the water flow hole 121 and the cold water port 123 to further prevent cold water from flowing back into the water flow hole 121. The controller 13 receives the signal of the first flow sensor 14, directly receives the flow signal through the first flow sensor 14, and controls the valve core 11 in time.

[0080] like Figures 3 to 4 As shown, the water flow hole 121 is provided on a horizontal plane 124 , and two ends of the horizontal plane 124 are respectively connected with inclined planes 125 , and the two inclined planes 125 are respectively connected to the inner surface of the valve body 12 , and the angles between the two inclined planes 125 and the horizontal plane 124 are both obtuse angles.

[0081] Among them, the water flow hole 121 is arranged on a horizontal plane 124, and has inclined surfaces 125 at both ends, which are obtuse angles with the horizontal plane 124. The inclined surfaces 125 are connected to the inner surface of the valve body 12. The two inclined surfaces 125 and the horizontal plane 124 block the water flow at both ends of the valve body 12 from passing through. The water flow hole 121 is arranged on the horizontal plane 124. The setting of the inclined surfaces 125 can effectively buffer the speed of water flowing through the water flow hole 121, prevent partial water from flowing back, and improve the service life of the connecting valve 1, while improving the safety of the water system.

[0082] like Figures 1 to 4 As shown, a moving channel 126 for the valve core 11 to move is provided in the valve body 12, and the surface of the valve core 11 has an annular groove 111, and a sealing ring 112 is sleeved on the annular groove 111, and the sealing ring 112 is sealed with the moving channel 126 on the circumference of the valve core 11. Specifically, the sealing ring 112 is an O-ring.

[0083] Among them, the valve core 11 has an annular groove 111, and the annular groove 111 is covered with a sealing ring 112, and the sealing ring 112 is sealed with a moving channel 126 around the valve core 11, so that when the water flows in the connecting valve 1, it will not flow to other places through the valve core 11, thereby ensuring the stability of the connecting valve 1.

[0084] Example 2

[0085] like Figure 1 and Figure 5 As shown, the present invention also provides a water system of a preheating and pressurizing connecting valve, which includes a gas water heater 2 and a plurality of water outlet pipes 3 from the far end to the near end of the gas water heater 2, the gas water heater 2 includes a water outlet 21 and a water inlet 22, the water system includes the preheating and pressurizing connecting valve in Example 1, the connecting valve 1 is connected to the farthest water outlet pipe 3; the water system also includes a host communication module 4, the host communication module 4 is arranged on the gas water heater 2, and the host communication module 4 and the controller 13 transmit signals to each other. The water system also includes a circulating pump 5, the circulating pump 5 is arranged inside the gas water heater 2, and the circulating pump 5 is used to pressurize the water in the gas water heater 2. The water system also includes a second flow sensor 6, the second flow sensor 6 is connected to the circulating pump 5, and the second flow sensor 6 is used to detect the flow rate of the water flow of the circulating pump 5. The water system also includes a temperature sensor 7, and the temperature sensor 7 is connected to the water outlet 21.

[0086] Among them, the water system is equipped with a connecting valve 1 at the farthest water outlet pipe 3, and a valve core 11 is provided on the connecting valve 1. The valve core 11 can use the host communication module 4 to issue instructions, the gas water heater 2 starts to operate, the first flow sensor 14 detects the flow signal, the controller 13 receives the flow signal, and controls the valve core 11 in time. The water system using the connecting valve 1 solves the problem that when the user uses cold water, hot water will not be discharged; when the boost function is turned on, closing the circulating connecting valve 1 can prevent the hot water from being continuously circulated, thereby improving the safety of the water system. The circulating pump 5 can boost the water of the gas water heater 2. The circulating pump 5 is arranged inside the gas water heater 2 to protect the operation of the circulating pump 5. The second flow sensor 6 is connected to the circulating pump 5, and can detect the accuracy of the flow signal generated by the circulating pump 5 when the circulating pump 5 boosts the water. With the use of the first flow sensor 14, the whole system is more stable and safe. The water system also includes a temperature sensor 7, which detects the outlet water temperature of the water outlet 21 to ensure that the outlet water temperature can be monitored in the system.

[0087] Example 3

[0088] like Figures 1 to 6 , Figure 8As shown, the present invention also provides a preheating method for a preheating and pressurizing connecting valve, the preheating method is used to control the water system of the preheating and pressurizing connecting valve in Example 2, the water system also includes a circulation pump 5, the circulation pump 5 is arranged inside the gas water heater 2, the circulation pump 5 is used to pressurize the water in the gas water heater 2, the preheating method includes the following steps: execute step 100 to start the preheating circulation mode; execute step 101 the circulation pump 5 outputs a first flow signal; execute step 102 the first flow sensor 14 receives the first flow signal within a specified time; execute step 103 the controller 13 controls the valve core 11 to open the water flow hole 121; execute step 104 to end the preheating circulation mode.

[0089] Among them, when the gas water heater 2 has a preheating cycle demand, execute step 100 to start the preheating cycle mode, combustion is carried out internally for the first 30S, and the water flow of the gas water heater 2 is controlled at 3L / min, and execute step 101. The circulation pump 5 outputs a first flow signal. In this embodiment, the first flow signal is a flow square wave of 3 liters three times; execute step 102. The first flow sensor 14 receives the first flow signal within a specified time. In this embodiment, the specified time is 30S, but it is not limited to this; execute step 103. The controller 13 controls the valve core 11 to open the water flow hole 121, the circulation pump 5 runs at maximum power, and the gas water heater 2 burns; execute step 104 to end the preheating cycle mode. Through the cooperation of the circulation pump 5, the first flow sensor 14 and the controller 13, the valve core 11 is remotely controlled to be opened or closed through remote communication, while ensuring the normal operation of the preheating function and optimizing the water system.

[0090] like Figures 1 to 6 As shown, the water system also includes a temperature sensor 7, which is connected to the water outlet 21. The step of starting the preheating cycle mode also includes: the user clicks to enter the preheating mode, or the temperature sensor 7 detects that the water temperature is lower than the preset temperature.

[0091] The preheating mode can be entered manually or automatically by clicking or detecting by the temperature sensor 7, thereby improving the degree of automation.

[0092] like Figures 1 to 6 As shown, the water system also includes a second flow sensor 6, which is connected to the circulation pump 5. The second flow sensor 6 is used to detect the flow rate of water in the circulation pump 5. The step 101 of the circulation pump 5 outputting a first flow signal also includes: the circulation pump 5 generates a first flow signal; the second flow sensor 6 detects the first flow signal; if the first flow signal is consistent with the set signal, the first flow sensor 14 receives the first flow signal within the specified time, and the controller 13 controls the valve core 11 to open the water flow hole 121; if the first flow signal is inconsistent with the set signal, it is terminated.

[0093] The second flow sensor 6 detects the first flow signal. If the first flow signal is consistent with the set signal, the controller 13 controls the valve core 11 to open the water flow hole 121. The second flow sensor 6 detects whether the flow rate of the water flow of the circulation pump 5 is consistent with the set signal to ensure the stability of the system and prevent the preheating function from malfunctioning. If they are inconsistent, the preheating function can be stopped in time. The stop includes completely stopping or allowing the circulation pump 5 to regenerate a flow signal.

[0094] like Figures 1 to 6 As shown, the step of ending the preheating cycle mode also includes: the user cancels entering the preheating mode, or the water outlet temperature detected by the temperature sensor 7 is greater than or equal to the preset temperature.

[0095] The preheating mode can be terminated manually or automatically by clicking or detecting by the temperature sensor 7, thereby improving the degree of automation.

[0096] Example 4

[0097] like Figures 1 to 5 , Figure 7 As shown, the present invention also provides a pressurization method for a preheating and pressurizing connecting valve, the pressurization method is used to control the water system of the preheating and pressurizing connecting valve in Example 2, the water system also includes a circulating pump 5, the circulating pump 5 is arranged inside the gas water heater 2, the circulating pump 5 is used to pressurize the water in the gas water heater 2, the pressurization method includes the following steps: execute step 200 to start the pressurization mode; execute step 201 the circulating pump 5 outputs a second flow signal; execute step 202 the first flow sensor 14 receives the second flow signal within a specified time; execute step 203 the controller 13 controls the valve core 11 to close the water flow hole 121; execute step 204 to end the pressurization mode; execute step 205 the flow signal received by the first flow sensor 14 for a period of time is 0; execute step 206 the controller 13 controls the valve core 11 to open the water flow hole 121.

[0098] Among them, executing step 200 starts the boost mode; executing step 201, the circulation pump 5 outputs a second flow signal. In this embodiment, the second flow signal is a detected flow, but the flow is not a flow square wave of 3 liters three times; executing step 202, the first flow sensor 14 receives the second flow signal within a specified time. In this embodiment, the specified time is 30S, but not limited to this; executing step 203, the controller 13 controls the valve core 11 to close the water flow hole 121, so that in the boost mode, the connecting valve 1 cannot pass water flow, preventing hot water from returning from the connecting valve 1 to the gas water heater 2 and continuing to be circulated and heated, thereby improving the safety of the system; when the valve core 11 closes the water flow hole 121, the water flow can pass through the small hole 15 The water continues to flow out, and the valve core 11 needs to block the water flow. Therefore, those skilled in the art can obviously design the small hole 15 to be small enough based on the starting point of the present invention so as not to affect the function of the entire system and enable the first flow sensor 14 to continue to detect a small amount of flow, thereby ensuring that the valve core 11 can continue to close the water flow hole 121 in the boost mode; execute step 204 to end the boost mode; execute step 205 to ensure that the flow signal received by the first flow sensor 14 is 0 for a period of time. In this embodiment, the period of time is 10S, and it can also be 15S or 20S, and the length of time is not limited to this; then execute step 206 to control the valve core 11 to open the water flow hole 121 to prepare for the next state judgment.

[0099] like Figures 1 to 5 , Figure 7 As shown, the water system also includes a second flow sensor 6, which is connected to the circulation pump 5. The second flow sensor 6 is used to detect the flow rate of the water flow of the circulation pump 5. The step 201 of the circulation pump 5 outputting the second flow signal also includes: the circulation pump 5 generates a second flow signal; the second flow sensor 6 detects the second flow signal; if the second flow signal is consistent with the set signal, the first flow sensor 14 receives the second flow signal within the specified time, and the controller 13 controls the valve core 11 to close the water flow hole 121; if the second flow signal is inconsistent with the set signal, it is terminated.

[0100] The second flow sensor 6 detects the second flow signal. If the second flow signal is consistent with the set signal, the controller 13 controls the valve core 11 to close the water flow hole 121. The second flow sensor 6 detects whether the flow rate of the water flow of the circulation pump 5 is consistent with the set signal to ensure the stability of the system and prevent the boost function from malfunctioning. If they are inconsistent, the operation can be stopped in time. This stop includes completely stopping or allowing the circulation pump 5 to regenerate a flow signal.

[0101] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A connection valve for preheating and boosting, comprising a valve core and a valve body, wherein the valve body comprises a water flow hole, a hot water port and a cold water port, wherein the water flow hole is arranged between the hot water port and the cold water port, and the valve core is used to block the water flow hole, characterized in that: It includes a controller, a first flow sensor and a small hole, wherein: The controller is used to control the valve core to block or open the water flow hole; The first flow sensor is disposed in the valve body and is used to detect the flow rate of water in the valve body; When the valve core closes the water flow hole, a small hole is formed between the valve core and the water flow hole, the small hole connects the hot water inlet and the cold water inlet, and the inner diameter of the small hole is smaller than the inner diameter of the water flow hole; The connecting valve further comprises a solenoid valve coil, which cooperates with the valve core and controls the valve core to block or open the water flow hole through power on and off; The connecting valve further comprises a reset member, which is connected to the valve core and applies force to the valve core so that the valve core blocks the water flow hole; The connecting valve further comprises a one-way valve, which is arranged between the water flow hole and the cold water inlet; The water flow hole is arranged on a horizontal plane, and two ends of the horizontal plane are respectively connected with inclined planes, and the two inclined planes are respectively connected with the inner surface of the valve body, and the angles between the two inclined planes and the horizontal plane are both obtuse angles.

2. The preheating and pressurizing connection valve according to claim 1, characterized in that: The valve body is provided with a moving channel for the valve core to move, the surface of the valve core is provided with an annular groove, a sealing ring is sleeved on the annular groove, and the sealing ring is sealed with the moving channel on the peripheral side of the valve core.

3. The preheating and pressurizing connection valve according to claim 1, characterized in that: The controller is used to receive the flow signal of the first flow sensor.

4. A water system for a preheating and pressurizing connecting valve, comprising a gas water heater and a plurality of water outlet pipes from a far end to a near end of the gas water heater, wherein the gas water heater comprises a water outlet and a water inlet, characterized in that: The water system comprises a preheating and pressurizing connecting valve as claimed in any one of claims 1 to 3, wherein the connecting valve is connected to the water outlet pipeline at the farthest end; The water system further comprises a host communication module, which is arranged on the gas water heater, and the host communication module and the controller transmit signals to each other.

5. The water channel system of the preheating and pressurizing connecting valve according to claim 4, characterized in that: The water system further comprises a circulation pump, which is arranged inside the gas water heater and is used for pressurizing the water in the gas water heater.

6. The water channel system of the preheating and pressurizing connecting valve according to claim 5, characterized in that: The water system further includes a second flow sensor, which is connected to the circulation pump and is used to detect the flow rate of water in the circulation pump.

7. The water channel system of the preheating and pressurizing connecting valve according to claim 4, characterized in that: The water system further includes a temperature sensor, and the temperature sensor is connected to the water outlet.

8. A preheating method for a preheating and pressurizing connecting valve, characterized in that: The preheating method is used to control the water system of the preheating and pressurizing connecting valve according to any one of claims 4 to 7, wherein the water system further comprises a circulation pump, which is arranged inside the gas water heater and is used to pressurize the water in the gas water heater. The preheating method comprises the following steps: Start the preheating cycle mode; The circulation pump outputs a first flow signal; The first flow sensor receives the first flow signal within a specified time; The controller controls the valve core to open the water flow hole; End the preheat cycle mode.

9. The preheating method of the preheating and pressurizing connecting valve according to claim 8, characterized in that: The water system further includes a temperature sensor, and the temperature sensor is connected to the water outlet. The step of starting the preheating cycle mode further includes: The user clicks to enter the preheating mode, or the temperature sensor detects that the water temperature is lower than a preset temperature.

10. The preheating method of the preheating and pressurizing connecting valve according to claim 8, characterized in that:The water system further includes a second flow sensor, the second flow sensor is connected to the circulation pump, and the second flow sensor is used to detect the flow rate of water in the circulation pump. The step of the circulation pump outputting a first flow signal also includes: The circulation pump generates the first flow signal; The second flow sensor detects the first flow signal; If the first flow signal is consistent with the set signal, the first flow sensor receives the first flow signal within a specified time, and the controller controls the valve core to open the water flow hole; If the first flow signal is inconsistent with the set signal, the process is terminated.

11. The preheating method of the preheating and pressurizing connecting valve according to claim 9, characterized in that: The steps of ending the preheating cycle mode also include: The user cancels entering the preheating mode, or the water outlet temperature detected by the temperature sensor is greater than or equal to the preset temperature.

12. A method for boosting pressure by connecting a valve for preheating and boosting, characterized in that: The pressurization method is used to control the water system of the preheating and pressurization connecting valve according to any one of claims 4 to 7, wherein the water system further comprises a circulation pump, which is arranged inside the gas water heater and is used to pressurize the water in the gas water heater. The pressurization method comprises the following steps: Activate boost mode; The circulation pump outputs a second flow signal; The first flow sensor receives the second flow signal within a specified time; The controller controls the valve core to close the water flow hole; End boost mode; The flow signal received by the first flow sensor is 0 for a period of time; The controller controls the valve core to open the water flow hole.

13. The method for boosting pressure using a preheating and boosting connection valve according to claim 12, characterized in that: The water system further includes a second flow sensor, the second flow sensor is connected to the circulation pump, and the second flow sensor is used to detect the flow rate of water in the circulation pump. The step of the circulation pump outputting a second flow signal also includes: The circulation pump generates a second flow signal; The second flow sensor detects the second flow signal; If the second flow signal is consistent with the set signal, the first flow sensor receives the second flow signal within a specified time, and the controller controls the valve core to close the water flow hole; If the second flow signal is inconsistent with the set signal, the process is terminated.

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