Pressure relief valve structure, waterway system and electric appliance

Abstract

The utility model discloses a kind of pressure relief valve structure and waterway system and electrical equipment, belong to pressure relief valve field.The pressure relief valve structure includes: three-way valve body and solenoid valve and water pressure sensor;The three-way valve body includes water inlet, water outlet and pressure relief drain port;The water pressure sensor is arranged in the water outlet of the three-way valve body;The solenoid valve includes diaphragm, and the diaphragm is used to control the opening of the pressure relief drain port.In the application scheme, the pressure of three-way valve body water outlet is detected by water pressure sensor, then the size of the electric quantity of solenoid valve coil is controlled, and then the diaphragm position is changed, to change the opening of pressure relief drain port, and then change the pressure relief pressure, to adapt to the pressure of three-way valve body water outlet.The pressure relief pressure of the application scheme is automatically regulated, without manual adjustment, reduce detection difficulty, improve detection efficiency, and improve the degree of intelligence.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valve technology, and in particular, to a pressure relief valve structure, water circuit system, and electrical equipment. Background Technology

[0002] Gas water heaters are commonly used gas appliances for producing hot water. They transfer heat to cold water flowing through a heat exchanger via combustion. The water pressure in the gas water heater's piping is a crucial parameter. When the internal pressure exceeds a specified limit, automatic pressure relief is required to prevent explosions and ensure safe operation. To meet national standards for gas water heater performance, the water circuit undergoes pressure resistance testing and pressure relief adjustments during the pre-shipment inspection process.

[0003] Currently, the most commonly used safety device for controlling water pressure is the mechanical pressure relief valve. Each manufacturer, based on its own system design standards and quality control level, uses two main methods to assess whether the pressure relief test meets the standards: subjective judgment by manually observing water leakage and precise judgment by monitoring the water pressure value using equipment. Mechanical pressure relief valves require manually tightening the valve screw to set the spring force of the internal spring device, indirectly adjusting the pressure relief value. This method requires employees to be proficient in the adjustment techniques, demands significant experience, and takes a long time, impacting testing efficiency. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a pressure relief valve structure, water circuit system and electrical equipment to solve the problem that the existing pressure relief valve requires manual tightening of the pressure relief valve screw to set the spring force of the internal spring device and indirectly adjust the pressure relief value. This method requires employees to be proficient in the debugging techniques, requires high debugging experience, and takes a long time, which affects the testing efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: In one aspect, a pressure relief valve structure is provided, including: a three-way valve body, a solenoid valve, and a water pressure sensor; The three-way valve body includes an inlet, an outlet, and a pressure relief drain outlet; The water pressure sensor is installed at the outlet of the three-way valve body; The solenoid valve includes a diaphragm for controlling the opening degree of the pressure relief drain port.

[0006] As an optional implementation of this application, the solenoid valve further includes: Solenoid valve body; Solenoid valve connector for connecting to electricity; A coil used to generate a magnetic field when energized; A moving iron core used to move under the influence of the magnetic field of a coil; A spring is disposed between the moving iron core and the diaphragm.

[0007] As an optional implementation of this application, the inlet of the three-way valve body is provided with a threaded connector.

[0008] As an optional implementation of this application, it also includes: a water leakage sensor; The leakage sensor is located at the pressure relief drain port of the three-way valve body.

[0009] As an optional implementation of this application, the pressure relief drain outlet is provided with a connection structure.

[0010] As an optional implementation of this application, the connection structure is a pagoda connector.

[0011] As an optional implementation of this application, it also includes a shell; The solenoid valve is housed inside the casing.

[0012] As an optional implementation of this application, it also includes an indicator light; The indicator light is located on the housing.

[0013] In a second aspect, a water system is provided, comprising: a pressure relief valve structure as described in any of the preceding claims.

[0014] Thirdly, an electrical device is provided, comprising: a pressure relief valve structure as described in any of the preceding claims.

[0015] The application employs the above technical solution and has at least the following beneficial effects: This application provides a pressure relief valve structure, a water circuit system, and electrical equipment. The pressure relief valve structure includes a three-way valve body, a solenoid valve, and a water pressure sensor. The three-way valve body includes an inlet, an outlet, and a pressure relief drain outlet. The water pressure sensor is located at the outlet of the three-way valve body. The solenoid valve includes a diaphragm, which controls the opening degree of the pressure relief drain outlet. In this application, the water pressure sensor detects the pressure at the outlet of the three-way valve body, and then controls the amount of electricity in the coil of the solenoid valve, thereby changing the position of the diaphragm to change the opening degree of the pressure relief drain outlet, and thus changing the pressure relief pressure to match the pressure at the outlet of the three-way valve body. This application provides automatic pressure relief adjustment, eliminating the need for manual adjustment, reducing detection difficulty, improving detection efficiency, and enhancing the level of intelligence. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a pressure relief valve structure provided in an embodiment of this utility model; Figure 2 This is a front view of a pressure relief valve structure provided in an embodiment of this utility model; Figure 3 This is a left view of a pressure relief valve structure provided in an embodiment of this utility model; Figure 4 This is a right view of a pressure relief valve structure provided in an embodiment of this utility model; Figure 5 This is a top view of a pressure relief valve structure provided in an embodiment of this utility model; Figure 6 This is a bottom view of a pressure relief valve structure provided in an embodiment of this utility model; Figure 7 This is a perspective line drawing of a pressure relief valve structure provided in an embodiment of this utility model; Figure 8 This is a cross-sectional view of a pressure relief valve structure provided in an embodiment of this utility model; Figure 9 This is a detection logic diagram for a pressure relief valve provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 10 - Three-way valve body; 11-Inlet; 12 - Outlet; 13 - Pressure relief drain outlet; 20 - Solenoid valve body; 21-Solenoid valve connector; 22-coil; 23-Moving iron core; 24-Spring; 25-September; 30 - Water pressure sensor; 40 - Outer shell; 50 - Indicator light; 60 - Leakage sensor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this utility model will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 This utility model provides a pressure relief valve structure, including: a three-way valve body 10, a solenoid valve, and a water pressure sensor 30; The three-way valve body 10 includes an inlet 11, an outlet 12, and a pressure relief drain 13; The water pressure sensor 30 is installed at the outlet 12 of the three-way valve body 10; The solenoid valve includes a diaphragm 25, which is used to control the opening degree of the pressure relief drain port 13.

[0021] In a preferred implementation of this application, the solenoid valve further includes: Solenoid valve body 20; Solenoid valve connector 21 for connecting to electricity; Coil 22 is used to generate a magnetic field when energized; The moving iron core 23 is used to move under the magnetic field of coil 22; Spring 24 is disposed between the moving iron core 23 and the diaphragm 25.

[0022] The solenoid valve connector 21 is connected to a power source to power the solenoid valve coil 22. When the solenoid valve coil 22 is energized, it generates a changing magnetic field, which drives the moving iron core 23 to move. Since the moving iron core 23 is connected to the diaphragm 25 via a spring 24, the force exerted by the spring 24 on the diaphragm 25 changes during its movement, thus changing the position of the diaphragm 25. The diaphragm 25 is located at the pressure relief drain port 13, thereby changing the opening degree of the pressure relief drain port 13 to achieve pressure matching. Therefore, automatic pressure regulation can be achieved simply by detecting the pressure at the outlet 12 using the water pressure sensor 30.

[0023] In actual use, the power supply is equipped with an adjustment circuit, which can change the parameters of the components in the adjustment circuit, thereby changing the magnitude of the current supplied to the coil 22. As the magnitude of the current changes, the magnetic field strength of the coil 22 also changes, thereby realizing the movement of the moving iron core 23.

[0024] In one embodiment, the water pressure sensor 30 is directly connected to the solenoid valve via an amplification circuit. The principle is as follows: generally, the higher the pressure, the greater the current in the water pressure sensor 30. After amplification, this provides a larger current to the coil 22, causing the moving iron core 23 to move in one direction. Conversely, the lower the pressure, the smaller the current in the water pressure sensor 30. This results in a smaller current being provided to the coil 22 after amplification, causing the moving iron core 23 to move in the opposite direction. Therefore, by simply using a suitable spring 24, automatic pressure adjustment based on the pressure at the outlet 12 can be achieved.

[0025] In another embodiment, the water pressure sensor 30 is connected to a main board, which is connected to an adjustment circuit (such as an adjustable resistor). The main board acquires the readings from the water pressure sensor 30 and controls the adjustment circuit based on these readings, thereby changing the magnitude of the current supplied to the coil 22. This embodiment does not require an additional amplification circuit, saving costs and eliminating the need for additional space.

[0026] In a preferred embodiment of this application, the inlet 11 of the three-way valve body 10 is provided with a threaded connector. The inlet 11 of the three-way valve body 10 can be directly connected to a water pipe via the threaded connector, eliminating the need for additional connection devices and simplifying its use.

[0027] It is understood that the inlet 11 of the three-way valve body 10 in this embodiment can also be provided with other types of interfaces to facilitate connection with water pipes. The specific type is set according to the actual situation and will not be described in detail here.

[0028] In a preferred embodiment of this application, the pressure relief drain port 13 of the three-way valve body 10 is provided with a connecting structure. The connection structure on the pressure relief drain port 13 of the three-way valve body 10 facilitates connection to a pipeline, eliminating the need for additional connecting devices and simplifying its use.

[0029] For example, the connection structure is a pagoda connector.

[0030] The pagoda connector allows for easy installation of the hose, and the hose is securely connected to the pressure relief drain port 13, ensuring the reliability of the pressure relief valve during use.

[0031] As a preferred implementation of this application embodiment, it further includes: a water leakage sensor 60; The leakage sensor 60 is installed at the pressure relief drain port 13 of the three-way valve body 10. It is used to provide a drainage signal during the self-test of the pressure relief valve to determine whether the pressure relief valve is working properly to relieve pressure and drain water.

[0032] As a preferred implementation of this application embodiment, it further includes: a housing 40; The solenoid valve is located inside the housing 40.

[0033] The decorative housing 40 of the pressure relief valve is fixed to the gas water heater housing 40 together with the three-way valve body 10 by screws, and is used for decoration and protection of the internal electrical components of the pressure relief valve.

[0034] As a preferred implementation of this application embodiment, it further includes an indicator light 50; The indicator light 50 is disposed on the housing 40.

[0035] The red LED indicator 50 of the pressure relief valve is fixed on the side of the decorative housing 40. During production testing and user use, if there is an abnormality in the test item or the pressure relief valve, the indicator 50 will stay on to indicate a fault. Under normal circumstances, it will be off.

[0036] The pressure relief valve structure provided in this application includes: a three-way valve body, a solenoid valve, and a water pressure sensor; the three-way valve body includes an inlet, an outlet, and a pressure relief drain outlet; the water pressure sensor is disposed at the outlet of the three-way valve body; the solenoid valve includes a diaphragm, which is used to control the opening degree of the pressure relief drain outlet. In this application, the water pressure sensor detects the pressure at the outlet of the three-way valve body, and then controls the magnitude of the electric current in the coil of the solenoid valve, thereby changing the position of the diaphragm to change the opening degree of the pressure relief drain outlet, and thus changing the pressure relief pressure to match the pressure at the outlet of the three-way valve body. This application provides automatic pressure relief adjustment, eliminating the need for manual adjustment, reducing detection difficulty, improving detection efficiency, and enhancing the level of intelligence.

[0037] To more clearly illustrate the solution of this application, a pressure relief valve structure for a gas water heater is provided below. The overall structure mainly consists of a liquid solenoid valve, a three-way valve body, a miniature water pressure sensor, a leakage sensor, and an LED indicator light.

[0038] The technical solutions adopted and their functions are as follows: The three-way valve body of the pressure relief valve has an inlet, an outlet, and a pressure relief drain port. The inlet is connected to the inlet pipe via a 4-point pipe thread, and the outlet is connected to the internal flow sensor of the gas water heater. During installation, it is fixed to the water heater casing with two screws. The pressure relief drain port has a pagoda connector structure, which makes it easy to install a drain hose. The miniature water pressure sensor of the pressure relief valve is fixed to the three-way valve body by threads. The lead wire passes through the wire hole on the top of the decorative housing and connects to the main board of the gas water heater. It is used to monitor the water pressure value in the pipeline and provide judgment signals during pressure resistance testing and pressure relief debugging. The miniature water pressure sensor is set at the outlet of the pressure relief valve (i.e., near the inlet of the water heater) to monitor the water pressure value in the pipeline in real time. The miniature water pressure sensor is fixed to the valve body by threads. According to its working principle, the water pressure sensor needs to contact water when it works. The working sensing part of the sensor is inside the water pipe, and the main body of the sensor and the connecting wire are outside the water pipe. After monitoring the water pressure value, the miniature water pressure sensor transmits the signal to the control main board of the water heater. The main board controls the opening and closing of the solenoid valve and the opening degree of the solenoid valve diaphragm according to the water pressure signal. The miniature water pressure sensor and the solenoid valve work together indirectly.

[0039] The liquid solenoid valve of the pressure relief valve is installed on the three-way valve body. The solenoid valve has a spring inside that can hold the diaphragm. It is normally closed when not energized. The solenoid valve can be in both energized and de-energized states. The spring force can seal the pressure relief drain port. Only when the main board controls the solenoid valve can the diaphragm open to release pressure and drain water, ensuring the sealing performance and controllability of the pressure relief valve. That is, the solenoid valve will only open when it is energized and the main board sends an action signal. The diaphragm acts like a valve, used to close and seal the water passage inside the valve body and open the water passage. When the spring holds the diaphragm, the drain port is blocked and no water flows out. When the spring does not hold the diaphragm (that is, the moving iron core of the electromagnet moves inward), the drain port will open and water will be discharged.

[0040] The leakage sensor of the pressure relief valve is installed at the pressure relief drain port of the three-way valve body. It is used to provide a drainage signal during the self-test of the pressure relief valve to determine whether the pressure relief valve is working properly to relieve pressure and drain water. The decorative housing of the pressure relief valve is fixed to the gas water heater housing together with the three-way valve body by screws, for decoration and protection of the internal electrical components of the pressure relief valve; The red LED indicator light of the pressure relief valve is fixed on the side of the decorative housing. During production testing and user use, if there is an abnormality in the test item or the pressure relief valve, the indicator light will stay on to indicate a fault. Under normal circumstances, it will be off. The self-regulating pressure relief valve can be used for pressure testing and pressure relief adjustments in the production and inspection process. See the working logic diagram below. Figure 6 ; The gas water heater uses an ambient temperature sensor to provide feedback on the temperature signal. When the user closes the inlet valve and there is residual water in the gas water heater pipes, the system mainboard controls the self-regulating pressure relief valve to open and drain the water when the ambient temperature is below zero degrees Celsius, thus protecting the product's safety.

[0041] This invention provides a design method and approach for the automatic pressure regulation, self-testing, and drainage functions of a gas water heater's pressure relief valve, improving the testing efficiency and reliability of the gas water heater. The pressure relief valve testing process is as follows: Figure 9 As shown.

[0042] Using the above-described pressure relief valve structure in a gas water heater has the following advantages: 1. In the production and inspection process of gas water heaters, the self-regulating pressure relief valve can automatically adjust the pressure relief to the required pressure value without manual adjustment. The water pressure sensor can assist in pressure resistance testing, reducing the difficulty of employee testing operations and corporate training costs, and improving testing efficiency. 2. When using a gas water heater, the system can automatically self-check and monitor the water pressure in the pipeline in real time. When releasing pressure and draining water, the system can check whether the pressure relief valve is working properly. This not only realizes the pressure relief function, but also solves the problem of manually checking the water heater's pressure relief valve for blockage, which affects normal operation and improves the level of intelligence. 3. When the user closes the inlet valve and there is residual water in the gas water heater pipes, if the ambient temperature is below zero degrees Celsius, the system mainboard can control the self-regulating pressure relief valve to open and drain the water by sensing the temperature through the temperature sensor built into the gas water heater. This eliminates the need to manually disassemble the water supply pipes to drain the water, preventing the pipes and valves from freezing and cracking, and ensuring the durability of the water heater product.

[0043] Based on the same inventive concept, this application provides a water system, including: a pressure relief valve structure.

[0044] The pressure relief valve structure includes: a three-way valve body, a solenoid valve, and a water pressure sensor; The three-way valve body includes an inlet, an outlet, and a pressure relief drain outlet; The water pressure sensor is installed at the outlet of the three-way valve body; The solenoid valve includes a diaphragm for controlling the opening degree of the pressure relief drain port.

[0045] In a preferred implementation of this application, the solenoid valve further includes: Solenoid valve body; Solenoid valve connector for connecting to electricity; A coil used to generate a magnetic field when energized; A moving iron core used to move under the influence of the magnetic field of a coil; A spring is disposed between the moving iron core and the diaphragm.

[0046] The solenoid valve connector is connected to a power source to supply power to the solenoid valve coil. When the solenoid valve coil is energized, it generates a changing magnetic field, which drives the moving iron core to move. Since the moving iron core is connected to the diaphragm via a spring, the force exerted by the spring on the diaphragm changes during movement, thus altering the diaphragm's position. The diaphragm is positioned at the pressure relief drain outlet, thereby changing the opening of the outlet to achieve pressure matching. Therefore, automatic pressure regulation can be achieved simply by detecting the pressure at the outlet using a water pressure sensor.

[0047] In practical use, the power supply is equipped with an adjustment circuit, which can change the parameters of the components in the adjustment circuit, thereby changing the magnitude of the current supplied to the coil. As the current magnitude changes, the magnetic field strength of the coil also changes, thus realizing the movement of the moving iron core.

[0048] In one embodiment, the water pressure sensor is directly connected to the solenoid valve via an amplification circuit. The principle is as follows: generally, the higher the pressure, the greater the current in the water pressure sensor. After amplification, this provides a larger current to the coil, causing the moving iron core to move in one direction. Conversely, the lower the pressure, the smaller the current in the water pressure sensor. After amplification, this provides a smaller current to the coil, causing the moving iron core to move in the opposite direction. Therefore, by using a suitable spring, automatic pressure adjustment based on the outlet pressure can be achieved.

[0049] In another embodiment, the water pressure sensor is connected to a main board, which is in turn connected to an adjustment circuit (such as an adjustable resistor). The main board acquires the readings from the water pressure sensor and controls the adjustment circuit based on these readings, thereby changing the magnitude of the current supplied to the coil. This implementation eliminates the need for a separate amplification circuit, saving costs and requiring no additional space.

[0050] In a preferred embodiment of this application, the inlet of the three-way valve body is provided with a threaded connector. The inlet of the three-way valve body can be directly connected to a water pipe via the threaded connector, eliminating the need for additional connecting devices and simplifying its use.

[0051] It is understood that the inlet of the three-way valve body in this embodiment can also be provided with other types of interfaces to facilitate connection with water pipes. The specific type is set according to the actual situation and will not be described in detail here.

[0052] In a preferred embodiment of this application, the pressure relief drain port of the three-way valve body is provided with a connecting structure. This connecting structure facilitates connection to a pipeline, eliminating the need for additional connecting devices and simplifying use.

[0053] For example, the connection structure is a pagoda connector.

[0054] The pagoda connector allows for easy installation of the hose, and the hose is securely connected to the pressure relief drain port, ensuring the reliability of the pressure relief valve during use.

[0055] As a preferred implementation of this application embodiment, it further includes: a water leakage sensor; The leakage sensor is located at the pressure relief drain port of the three-way valve body. It is used to provide a drainage signal during the self-test of the pressure relief valve to determine whether the pressure relief valve is working properly to relieve pressure and drain water.

[0056] As a preferred implementation of this application embodiment, it further includes: a shell; The solenoid valve is housed inside the casing.

[0057] The decorative housing of the pressure relief valve is fixed to the gas water heater housing together with the three-way valve body by screws, and is used for decoration and protection of the internal electrical components of the pressure relief valve.

[0058] As a preferred implementation of this application embodiment, it further includes an indicator light; The indicator light is located on the housing.

[0059] The red LED indicator light of the pressure relief valve is fixed on the side of the decorative housing. During production testing and user use, if there is an abnormality in the test item or the pressure relief valve, the indicator light will stay on to indicate a fault. Under normal circumstances, it will be off.

[0060] The water system provided in this application embodiment, through the aforementioned pressure relief valve structure, can detect the pressure at the outlet of the three-way valve body using a water pressure sensor. It then controls the electrical charge on the coil in the solenoid valve, thereby changing the diaphragm position and thus the opening of the pressure relief outlet, ultimately altering the pressure relief to match the pressure at the outlet of the three-way valve body. The water system in this application provides automatic pressure relief adjustment, eliminating the need for manual adjustment, reducing detection difficulty, improving detection efficiency, and enhancing the level of intelligence.

[0061] Based on the same inventive concept, this application also provides an electrical device, including a pressure relief valve structure.

[0062] The pressure relief valve structure includes: a three-way valve body, a solenoid valve, and a water pressure sensor; The three-way valve body includes an inlet, an outlet, and a pressure relief drain outlet; The water pressure sensor is installed at the outlet of the three-way valve body; The solenoid valve includes a diaphragm for controlling the opening degree of the pressure relief drain port.

[0063] In a preferred implementation of this application, the solenoid valve further includes: Solenoid valve body; Solenoid valve connector for connecting to electricity; A coil used to generate a magnetic field when energized; A moving iron core used to move under the influence of the magnetic field of a coil; A spring is disposed between the moving iron core and the diaphragm.

[0064] The solenoid valve connector is connected to a power source to supply power to the solenoid valve coil. When the solenoid valve coil is energized, it generates a changing magnetic field, which drives the moving iron core to move. Since the moving iron core is connected to the diaphragm via a spring, the force exerted by the spring on the diaphragm changes during movement, thus altering the diaphragm's position. The diaphragm is positioned at the pressure relief drain outlet, thereby changing the opening of the outlet to achieve pressure matching. Therefore, automatic pressure regulation can be achieved simply by detecting the pressure at the outlet using a water pressure sensor.

[0065] In practical use, the power supply is equipped with an adjustment circuit, which can change the parameters of the components in the adjustment circuit, thereby changing the magnitude of the current supplied to the coil. As the current magnitude changes, the magnetic field strength of the coil also changes, thus realizing the movement of the moving iron core.

[0066] In one embodiment, the water pressure sensor is directly connected to the solenoid valve via an amplification circuit. The principle is as follows: generally, the higher the pressure, the greater the current in the water pressure sensor. After amplification, this provides a larger current to the coil, causing the moving iron core to move in one direction. Conversely, the lower the pressure, the smaller the current in the water pressure sensor. After amplification, this provides a smaller current to the coil, causing the moving iron core to move in the opposite direction. Therefore, by using a suitable spring, automatic pressure adjustment based on the outlet pressure can be achieved.

[0067] In another embodiment, the water pressure sensor is connected to a main board, which is in turn connected to an adjustment circuit (such as an adjustable resistor). The main board acquires the readings from the water pressure sensor and controls the adjustment circuit based on these readings, thereby changing the magnitude of the current supplied to the coil. This implementation eliminates the need for a separate amplification circuit, saving costs and requiring no additional space.

[0068] In a preferred embodiment of this application, the inlet of the three-way valve body is provided with a threaded connector. The inlet of the three-way valve body can be directly connected to a water pipe via the threaded connector, eliminating the need for additional connecting devices and simplifying its use.

[0069] It is understood that the inlet of the three-way valve body in this embodiment can also be provided with other types of interfaces to facilitate connection with water pipes. The specific type is set according to the actual situation and will not be described in detail here.

[0070] In a preferred embodiment of this application, the pressure relief drain port of the three-way valve body is provided with a connecting structure. This connecting structure facilitates connection to a pipeline, eliminating the need for additional connecting devices and simplifying use.

[0071] For example, the connection structure is a pagoda connector.

[0072] The pagoda connector allows for easy installation of the hose, and the hose is securely connected to the pressure relief drain port, ensuring the reliability of the pressure relief valve during use.

[0073] As a preferred implementation of this application embodiment, it further includes: a water leakage sensor; The leakage sensor is located at the pressure relief drain port of the three-way valve body. It is used to provide a drainage signal during the self-test of the pressure relief valve to determine whether the pressure relief valve is working properly to relieve pressure and drain water.

[0074] As a preferred implementation of this application embodiment, it further includes: a shell; The solenoid valve is housed inside the casing.

[0075] The decorative housing of the pressure relief valve is fixed to the gas water heater housing together with the three-way valve body by screws, and is used for decoration and protection of the internal electrical components of the pressure relief valve.

[0076] As a preferred implementation of this application embodiment, it further includes an indicator light; The indicator light is located on the housing.

[0077] The red LED indicator light of the pressure relief valve is fixed on the side of the decorative housing. During production testing and user use, if there is an abnormality in the test item or the pressure relief valve, the indicator light will stay on to indicate a fault. Under normal circumstances, it will be off.

[0078] The electrical device provided in this application embodiment, through the aforementioned pressure relief valve structure, can detect the pressure at the outlet of the three-way valve body using a water pressure sensor. It then controls the electrical charge on the coil in the solenoid valve, thereby changing the diaphragm position to alter the opening of the pressure relief outlet, and thus changing the pressure relief pressure to match the pressure at the outlet of the three-way valve body. The pressure relief in this electrical device is automatically adjusted, eliminating the need for manual adjustment, reducing detection difficulty, improving detection efficiency, and enhancing the level of intelligence.

[0079] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0080] It should be noted that in the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means at least two.

[0081] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0082] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0083] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0084] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0085] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0087] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A pressure relief valve structure, characterized in that, include: Three-way valve body, solenoid valve, and water pressure sensor; The three-way valve body includes an inlet, an outlet, and a pressure relief drain outlet; The water pressure sensor is installed at the outlet of the three-way valve body; The solenoid valve includes a diaphragm for controlling the opening degree of the pressure relief drain port.

2. The pressure relief valve structure according to claim 1, characterized in that: The solenoid valve also includes: Solenoid valve body; Solenoid valve connector for connecting to electricity; A coil used to generate a magnetic field when energized; A moving iron core used to move under the influence of the magnetic field of a coil; A spring is disposed between the moving iron core and the diaphragm.

3. The pressure relief valve structure according to claim 1, characterized in that: The inlet of the three-way valve body is equipped with a threaded connector.

4. The pressure relief valve structure according to claim 1, characterized in that, Also includes: Leakage sensor; The leakage sensor is located at the pressure relief drain port of the three-way valve body.

5. The pressure relief valve structure according to claim 1, characterized in that: The pressure relief drain outlet is equipped with a connecting structure.

6. The pressure relief valve structure according to claim 5, characterized in that: The connection structure is a pagoda connector.

7. The pressure relief valve structure according to claim 1, characterized in that, It also includes the outer casing; The solenoid valve is housed inside the casing.

8. The pressure relief valve structure according to claim 7, characterized in that: It also includes indicator lights; The indicator light is located on the housing.

9. A waterway system, characterized in that: include: The pressure relief valve structure as described in any one of claims 1-8.

10. An electrical appliance, characterized in that, include: The pressure relief valve structure as described in any one of claims 1-8.

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