Exhaust pressure stabilizing safety valve body module

Abstract

The present application relates to a kind of exhaust pressure stabilizing safety valve body module, for solving the complex structure of the existing similar coffee machine pressure stabilizing, pressure relief, higher cost input, and when water tank has no water, the problem of not water after electromagnetic pump emptying.The valve body module includes multi-channel main body, exhaust assembly, the exhaust port of the inner passage of the multi-channel main body is provided with the exhaust assembly, the exhaust pin of exhaust assembly is slidingly limited in the inner end of exhaust port, exhaust pipe connector is sealingly fixed to the outer end of exhaust port, the spring is arranged between the inner end of exhaust pin and the inner end of exhaust pipe connector, the side of exhaust pin is provided with exhaust groove, under the initial action of spring, the inner end of exhaust pin and the inner end of exhaust port are abutted to form sealed state;When the inner end of exhaust pin is compressed by the pressure increase of the inner passage of multi-channel main body, the inner end of exhaust pin and exhaust port are unsealed, and part of gas-liquid in channel body is discharged through the exhaust groove in the side of exhaust pin and exhaust pipe connector.

Description

Technical Field

[0001] This invention relates to coffee machine piping systems and is a safe, pressure-stabilizing exhaust valve module. Background Technology

[0002] A coffee machine is an electrical appliance used for making coffee. They are generally divided into semi-automatic and fully automatic types. Semi-automatic coffee machines require manual operation for grinding, tamping, filling, brewing, and removing coffee grounds. Fully automatic coffee machines are fully automated, controlling the entire coffee brewing process from preheating and cleaning to grinding, tamping, brewing, and dispensing. They brew coffee according to scientific data and procedures, requiring only the touch of a button. With the improvement of people's living standards and the popularization of coffee culture, the functional demands of coffee machines are becoming increasingly diversified. Many people prefer espresso, but high-pressure coffee machines often experience unstable coffee flow rates, excessive pump vibration and noise; the amount of caffeine added is difficult to control, and when the volume is exceeded, the brewing pressure can be too high, causing coffee grounds to burst and the brewing tube to rupture. Long-term high-pressure brewing can significantly impact the brewing system and the machine's lifespan. To address this technical issue, several patent applications have been developed, such as Chinese Patent Application No. 202021961490.9 (authorization announcement date: June 4, 2021), entitled "A Water Boiler Pressure Relief and Energy Recovery System for a Commercial Coffee Machine"; and Chinese Patent Application No. 202110565430.8 (application publication date: August 10, 2021), entitled "An Espresso Brewing Piping System for an Automatic Vending Coffee Machine." Both of these products disclose pressure monitoring to control electromagnetic pressure relief valves and other components to achieve pressure relief and stabilization, ensuring pressure safety within the equipment. However, the overall structure remains complex, requiring high precision in electronic control and incurring significant costs. Furthermore, in these products, when the water tank is empty, the water pump may fail to supply water after emptying. Therefore, improvements are needed to the existing boiler front-end piping system structure of high-pressure coffee machines to enhance the user experience. Summary of the Invention

[0003] To overcome the above shortcomings, the purpose of this invention is to provide a safe, pressure-stabilizing valve body module for exhaust, thereby solving the technical problems of existing coffee machines having complex pressure stabilization and depressurization structures, high costs, and the tendency for the electromagnetic pump to fail to pump water when the water tank is empty. This objective is achieved through the following technical solution.

[0004] A pressure-stabilizing safety valve body module includes a multi-channel main body and an exhaust assembly. The multi-channel main body has a pump interface for connecting an electromagnetic pump and a pipe interface for connecting a boiler pipe to a coffee machine. The multi-channel main body also has a passage connecting the pump interface and the pipe interface, with an exhaust port within the passage. The exhaust port is equipped with the exhaust assembly, which includes an exhaust pin, a spring, and an exhaust pipe connector. The exhaust pin is slidably limited to the inner end of the exhaust port, and the exhaust pipe connector is sealed and fixed to the outer end of the exhaust port. The exhaust pin and the inner end of the exhaust pipe connector are in close contact. The spring is abutted, and the side of the exhaust pin has an exhaust groove. Under the initial action of the spring, the inner end of the exhaust pin abuts against the inner end of the exhaust port to form a seal. When the pressure inside the multi-channel body increases and compresses the spring, the seal between the inner end of the exhaust pin and the exhaust port is released, and some gas and liquid in the channel body are discharged through the exhaust groove on the side of the exhaust pin and the exhaust pipe joint. When the pressure inside the multi-channel body increases to the point that it drives the exhaust pin to compress the spring, the outer end of the exhaust pin abuts against the inner end of the exhaust pipe joint to form a seal, thus stopping the gas and liquid discharge. The above structure effectively prevents the electromagnetic pump from running dry by venting at low pressure through the exhaust assembly, facilitates water filling operation, and can automatically close the exhaust assembly when the pump water pressure reaches the set value, ensuring normal liquid supply pressure and making the operation relatively stable and reliable.

[0005] Both the inner and outer ends of the exhaust pin are conical, and the inner ends of the exhaust port and the exhaust pipe connector are also conical, corresponding to the two ends of the exhaust pin. This structure ensures a reliable and stable seal at both ends of the exhaust pin.

[0006] The valve body module includes a pressure stabilizing component. The multi-channel main body has an inlet channel connecting to the pump interface and an outlet channel connecting to the pipe interface. An exhaust port is located in the inlet channel. The multi-channel main body has a pressure stabilizing chamber connecting the inlet and outlet channels. A pressure-stabilizing deformable silicone plate is fixedly positioned in the pressure stabilizing chamber by a fixed cover. Initially, the silicone plate's elasticity seals the inlet and outlet channels. When the inlet pressure increases to the point of deforming the silicone plate, the inlet and outlet channels become connected through the cavity formed inside the deformed silicone plate, thus connecting the pump interface and the pipe interface. This pressure stabilizing component has a purely mechanical structure without electromagnetic control, making it simple and easy to use. It effectively stabilizes and controls the flow rate of the electromagnetic pump, reducing vibration and noise during operation and improving the user experience.

[0007] The inlet diameter of the pressure-stabilizing chamber corresponding to the liquid inlet passage is smaller than the inlet diameter of the pressure-stabilizing chamber corresponding to the liquid outlet passage. This structure improves the effect of pressure-stabilizing flow rate control.

[0008] The fixing cover is fitted onto the outer wall of the pressure-stabilizing cavity of the multi-channel body and then stamped to fix it, and a space is formed between the fixing cover and the silicone plate to accommodate the deformation of the silicone plate. This structure ensures the stability and reliability of the silicone plate's deformation.

[0009] The valve body module includes a pressure relief assembly. A pressure relief port is provided in the passage near the pipe interface within the multi-channel body. The pressure relief assembly is located at the pressure relief port and includes a sealing plug, a pressure regulating spring, and a pressure relief pipe connector. The sealing plug is slidably limited to the inner end of the pressure relief port. The pressure relief pipe connector is sealed and fixed to the outer end of the pressure relief port, and the pressure relief pipe connector and the outer end of the pressure relief port are threaded together. The pressure regulating spring is abutting between the outer end of the pressure relief plug and the inner end of the pressure relief pipe connector. Under the action of the pressure regulating spring, the inner end of the pressure relief plug and the inner end of the pressure relief port are tightly sealed. When the pressure at the inner end of the pressure relief port increases and compresses the pressure regulating spring, the seal between the inner end of the pressure relief plug and the inner end of the pressure relief port is released, and the gas and liquid in the passage within the multi-channel body are discharged through the pressure relief pipe connector of the pressure relief port, forming a pressure relief state. When the threads of the pressure relief pipe connector and the pressure relief port are adjusted, the sealing force between the pressure relief plug and the inner end of the pressure relief port is adjusted. With this structure, when the pressure of the coffee machine's brewing device exceeds the set maximum pressure, the pressure relief valve assembly automatically opens to release pressure, reducing the risk of coffee powder bursting due to excessive pressure during the brewing process and extending the service life of the electromagnetic pump and the product.

[0010] The pressure inside the inlet passage, where the silicone plate of the pressure stabilizing component is deformed by the fluid, is greater than the pressure inside the inlet passage required for the outer end of the exhaust pin in the exhaust component to be tightly sealed against the inner end of the exhaust pipe connector. This structure ensures that the liquid supply pressure within the multi-channel body meets the requirements of the brewing apparatus.

[0011] Both the exhaust pipe connector of the exhaust assembly and the pressure relief pipe connector of the pressure relief assembly have external pipelines that guide the wastewater to the same wastewater box. This structure facilitates the centralized collection and treatment of wastewater.

[0012] The working method of this exhaust pressure stabilizing safety valve module is as follows: When the electromagnetic pump is working, fluid enters the inlet channel through the pump interface of the multi-channel body. Since the pressure in the inlet channel is insufficient to lift the silicone plate of the pressure stabilizing component at the beginning of startup, the inlet channel and the outlet channel are not connected. The exhaust pin is lifted by the pressure at the inner end of the exhaust port, and part of the fluid and gas in the inlet channel is discharged to the outside along the exhaust groove on the side of the exhaust pin and the exhaust pipe joint. As the pump pressure increases to the point that the outer end of the exhaust pin seals with the inner end of the exhaust pipe joint, the pressure in the inlet channel increases and lifts the silicone plate of the pressure stabilizing component. The inlet channel and the outlet channel form a pressure-stabilized connection, and the pipe interface forms a pressure-stabilized liquid supply to the boiler pipe of the coffee machine. When the pressure of the coffee machine's brewing device is too high or the boiler pipe is blocked, the sealing plug of the pressure relief component is lifted and compresses the pressure regulating spring. That is, the sealing plug is released from the inner end of the pressure relief port, and the gas and liquid are discharged from the pressure relief pipe joint, realizing the pressure relief operation.

[0013] When the pressure relief assembly's pressure relief pipe joint is disassembled relative to the pressure relief port and the pressure relief port is connected to an external suction device, reverse suction is performed to clear the boiler pipes and brewing device of the coffee machine.

[0014] This invention features a reasonable overall structure, effectively solving the problem of the electromagnetic pump failing to pump water when the water tank is empty. Furthermore, the flow rate control within the channel is relatively stable, effectively reducing electromagnetic pump vibration and noise, and improving user comfort. In addition, it has an automatic pressure relief function, effectively reducing the risk of high-pressure powder explosion and pipe bursts in the brewing device, improving the safety and lifespan of the coffee machine. It is suitable for use as a valve module in various coffee machines, or as an improvement on similar structures. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection between the electromagnetic pump and the multi-channel main body of the present invention.

[0016] Figure 2 yes Figure 1 A cross-sectional structural schematic diagram of the flow state of the multi-channel main body.

[0017] Figure 3 yes Figure 1 A schematic diagram of the flow state of the multi-channel main body in two sections.

[0018] Figure 4 This is a three-dimensional structural diagram of the exhaust pin of the present invention.

[0019] Figure 5 This is a schematic diagram illustrating the principle of the internal piping connection of the coffee machine according to the present invention.

[0020] The numbers and names in the diagram are as follows: 1. Electromagnetic pump, 2. Multi-channel main body, 201. Pump interface, 202. Pipe interface, 203. Exhaust port, 204. Liquid inlet passage, 205. Liquid outlet passage, 206. Pressure stabilizing chamber, 207. Pressure relief port, 3. Exhaust assembly, 301. Exhaust pin, 302. Spring, 303. Exhaust pipe connector, 4. Pressure stabilizing assembly, 401. Fixing cover, 402. Silicone plate, 5. Pressure relief assembly, 501. Sealing plug, 502. Pressure regulating spring, 503. Pressure relief pipe connector, 6. Boiler, 7. Brewing device, 8. Wastewater box. Implementation

[0021] The invention will now be further described with reference to the accompanying drawings. For example... Figures 1-5 As shown, the exhaust pressure stabilizing safety valve body module includes a multi-channel main body 2 and an exhaust component 3. The multi-channel main body is provided with a pump interface 201 for connecting to the electromagnetic pump 1 and a pipe interface 202 for connecting to the boiler pipe 6 of the coffee machine. The multi-channel main body is provided with an inlet passage 204 connecting to the pump interface and an outlet passage 205 connecting to the pipe interface. An exhaust port 203 is provided in the inlet passage. The exhaust port is provided with an exhaust component 3. The exhaust component includes an exhaust pin 301, a spring 302, and an exhaust pipe connector 303. The inner and outer ends of the exhaust pin are both conical. The inner ends of the exhaust port and the inner ends of the exhaust pipe connector are both conical, corresponding to the two ends of the exhaust pin. The exhaust pin slides and is limited to the inner end of the exhaust port. The exhaust pipe connector is snapped and fixed to the outer end of the exhaust port, and the exhaust pipe connector is fitted with a sealing ring to form a sealed connection with the exhaust port. A spring is installed between the exhaust pin and the inner end of the exhaust pipe connector. The side of the exhaust pin is provided with an exhaust groove 3011, which helps to control the amount of exhaust. Under the initial action of the spring, the inner end of the exhaust pin abuts against the inner end of the exhaust port to form a sealed state. When the pressure of the liquid inlet passage in the multi-channel body increases and compresses the spring, the inner end of the exhaust pin and the exhaust port are released from the seal. Some of the gas and liquid in the channel body are discharged to the outside through the exhaust groove on the side of the exhaust pin and the exhaust pipe connector. When the liquid inlet passage in the multi-channel body is pressurized to the point that it drives the exhaust pin to compress the spring, the outer end of the exhaust pin abuts against the inner end of the exhaust pipe connector to form a seal, that is, the gas and liquid discharge stops, so as to maintain the required liquid supply pressure in the liquid inlet passage.

[0022] The valve body module includes a pressure stabilizing component 4. The multi-channel main body 2 has a pressure stabilizing chamber 206 that connects the inlet passage 204 and the outlet passage 205. The inlet diameter of the pressure stabilizing chamber corresponding to the inlet passage is smaller than the inlet diameter of the pressure stabilizing chamber corresponding to the outlet passage, and the inlet and outlet passages are arranged in parallel. The pressure stabilizing chamber is fixedly fitted with a pressure-deformable silicone plate 402 by a fixing cover 401. The fixing cover and the outer wall of the pressure stabilizing chamber of the multi-channel main body are initially fitted together and then stamped to fix it, and a space is formed between the fixing cover and the silicone plate to accommodate the deformation of the silicone plate. In the initial state, the silicone plate forms a tight seal against the openings of the inlet and outlet passages under its own elasticity. When the inlet pressure of the inlet passage increases to the point that it pushes the silicone plate to deform, the inlet and outlet passages are connected through the cavity formed inside the deformed silicone plate, that is, the pump interface 201 and the pipe interface 202 are connected. Because the silicone plate always has a deformation force, it can play a buffering and shock-absorbing role, effectively reducing vibration and noise for the electromagnetic pump 1. Furthermore, the pressure in the inlet passage of the pressure stabilizing component, where the silicone plate is deformed by the fluid, is greater than the pressure in the inlet passage required for the outer end of the exhaust pin and the inner end of the exhaust pipe joint in the exhaust component to be tightly sealed, thus ensuring that the exhaust component and the pressure stabilizing component work stably under their respective pressures.

[0023] The valve body module includes a pressure relief component 5. A pressure relief port 207 is provided in the liquid outlet passage 205 within the multi-channel body 2. A pressure relief component is installed at the pressure relief port, comprising a sealing plug 501, a pressure regulating spring 502, and a pressure relief pipe connector 503. The sealing plug slides to the inner end of the pressure relief port. The pressure relief pipe connector radially seals the outer end of the pressure relief port via a sealing ring, and the pressure relief pipe connector and the outer end of the pressure relief port are threaded together. A pressure regulating spring is abutting against the outer end of the pressure relief plug and the inner end of the pressure relief pipe connector. Under the action of the pressure regulating spring, the inner end of the pressure relief plug and the inner end of the pressure relief port are tightly sealed. When the pressure in the liquid outlet passage of the inner end of the pressure relief port increases and compresses the pressure regulating spring, the seal between the inner end of the pressure relief plug and the inner end of the pressure relief port is released, and the gas and liquid in the liquid outlet passage of the multi-channel body are discharged through the pressure relief pipe joint of the pressure relief port to form a pressure relief state. When the threads of the pressure relief pipe joint and the pressure relief port are adjusted, the sealing force between the pressure relief plug and the inner end of the pressure relief port is adjusted to regulate the pressure value of the pressure relief to meet the pressure relief requirements. The exhaust pipe joint 303 of the exhaust assembly 3 and the pressure relief pipe joint of the pressure relief assembly are both externally connected to the same wastewater box 8 for convenient centralized collection and treatment of wastewater.

[0024] The working method of this exhaust pressure stabilizing safety valve module is as follows: When the electromagnetic pump 1 is working, fluid enters the inlet channel 204 through the pump interface 201 of the multi-channel body 2. Since the pressure in the inlet channel is insufficient to lift the silicone plate 402 of the pressure stabilizing component 4 at the beginning of startup, the inlet channel and the outlet channel are not connected. The exhaust pin 301 is lifted by the pressure at the inner end of the exhaust port 203 and compresses the spring 302. A part of the fluid and gas in the inlet channel is discharged to the outside along the exhaust groove 3011 on the side of the exhaust pin and the exhaust pipe joint 303, so that the electromagnetic pump is not prone to dry pumping when it is working, ensuring normal water filling operation in the later stage. As the pump pressure increases to the point that it pushes the outer end of the exhaust pin to seal with the inner end of the exhaust pipe joint, the pressure in the inlet channel increases to the working pressure and lifts the silicone plate of the pressure stabilizing component. The inlet channel and the outlet channel 205 form a pressure-stabilized connection, and the pressure-stabilized liquid supply is formed to the boiler 6 pipe of the coffee machine through the pipe interface 202. When the pressure of the brewing device 7 of the coffee machine is too high or the boiler pipe is blocked, the sealing plug 501 of the pressure relief component is pushed up to compress the pressure regulating spring 502. That is, the sealing plug is released from the inner end of the pressure relief port, and the gas and liquid are discharged through the pressure relief pipe joint 503 to realize the pressure relief operation. This can prevent high temperature, high pressure, pipe bursting, and powder explosion, and avoid safety hazards to the human body.

[0025] When the brewing device 7 or boiler pipes are blocked, the pressure relief pipe joint 503 of the pressure relief assembly 5 is disassembled and the pressure relief port 207 is connected to an external suction device to perform reverse suction and unblocking operation on the boiler 6 pipes and brewing device of the coffee machine.

[0026] The above description is intended to illustrate the technical means of the present invention and is not intended to limit the scope of the invention. Any obvious improvements or substitutions made to the present invention by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of the present invention.

Claims

1. A safe valve body module for stabilizing exhaust pressure, the valve body module comprising a multi-channel body (2) and an exhaust assembly (3), wherein the multi-channel body is provided with a pump interface (201) for connecting an electromagnetic pump (1) and a pipe interface for connecting a boiler (6) pipe of a coffee machine, and the multi-channel body is provided with a passage connecting the pump interface and the pipe interface, wherein an exhaust port (203) is provided in the passage; characterized in that The exhaust port (203) is provided with the exhaust assembly (3), which includes an exhaust pin (301), a spring (302), and an exhaust pipe connector (303). The exhaust pin is slidably limited to the inner end of the exhaust port, and the exhaust pipe connector is sealed and fixed to the outer end of the exhaust port. The spring is abutted between the exhaust pin and the inner end of the exhaust pipe connector. The side of the exhaust pin is provided with an exhaust groove (3011). Under the initial action of the spring, the inner end of the exhaust pin abuts against the inner end of the exhaust port to form a sealed state. When the pressure of the inner end of the exhaust pin increases due to the internal passage of the multi-channel body (2) and compresses the spring, the inner end of the exhaust pin is released from the seal with the exhaust port, and part of the gas and liquid in the channel body is discharged through the exhaust groove on the side of the exhaust pin and the exhaust pipe connector. When the internal passage of the multi-channel body is pressurized to the point that the exhaust pin compresses the spring, the outer end of the exhaust pin abuts against the inner end of the exhaust pipe connector to form a seal, that is, the gas and liquid discharge stops. The valve body module includes a pressure stabilizing group. The multi-channel body (2) has a passageway divided into an inlet passageway (204) that connects to the pump interface (201) and an outlet passageway (205) that connects to the pipe interface (202). The exhaust port (203) is located in the inlet passageway. The multi-channel body has a pressure stabilizing chamber (206) that connects the inlet passageway and the outlet passageway. The pressure stabilizing chamber is fixedly provided with a pressure-stabilizing and deformable silicone plate (402) by a fixed cover (401). In the initial state, the silicone plate forms a tight seal against the openings of the inlet passageway and the outlet passageway under its own elasticity. When the inlet pressure of the inlet passageway increases to the point that it pushes up the silicone plate and deforms, the inlet passageway and the outlet passageway are connected through the cavity formed inside the silicone plate after deformation, that is, the pump interfaceway and the pipe interfaceway are connected. The opening diameter of the inlet passageway (204) corresponding to the pressure stabilizing chamber (206) is smaller than the opening diameter of the outlet passageway (205) corresponding to the pressure stabilizing chamber.

2. The exhaust pressure stabilizing safety valve body module according to claim 1, characterized in that... The inner and outer ends of the exhaust pin (301) are both conical, and the inner ends of the exhaust port (203) and the exhaust pipe connector (303) are both conical, corresponding to the two ends of the exhaust pin.

3. The exhaust pressure stabilizing safety valve body module according to claim 1, characterized in that... The fixing cover (401) is fitted and then stamped to fix the outer wall of the pressure stabilizing cavity (206) of the multi-channel body (2), and a space is formed between the fixing cover and the silicone plate (402) to accommodate the deformation of the silicone plate.

4. The exhaust pressure stabilizing safety valve body module according to claim 1, characterized in that... The valve body module includes a pressure relief assembly (5). A pressure relief port (207) is provided in the passage near the pipe interface (202) inside the multi-channel body (2). The pressure relief assembly is installed at the pressure relief port. The pressure relief assembly includes a sealing plug (501), a pressure regulating spring (502), and a pressure relief pipe joint (503). The sealing plug is slidably limited to the inner end of the pressure relief port. The pressure relief pipe joint is sealed and fixed to the outer end of the pressure relief port. The pressure relief pipe joint and the outer end of the pressure relief port are threaded together. The outer end of the pressure relief plug and the pressure relief pipe joint are threaded together. The pressure regulating spring is installed between the inner ends of the pressure pipe joint. Under the action of the pressure regulating spring, the inner end of the pressure relief plug and the inner end of the pressure relief port are tightly sealed. When the pressure inside the pressure relief port increases and compresses the pressure regulating spring, the inner end of the pressure relief plug and the inner end of the pressure relief port are released from the seal, and the gas and liquid in the multi-channel body are discharged through the pressure relief pipe joint of the pressure relief port to form a pressure relief state. When the threads of the pressure relief pipe joint and the pressure relief port are adjusted, the sealing force between the pressure relief plug and the inner end of the pressure relief port is adjusted.

5. The exhaust pressure stabilizing safety valve body module according to claim 4, characterized in that... The pressure inside the inlet passage (204) of the silicone plate (402) of the pressure stabilizing component (4) is greater than the pressure inside the inlet passage required when the outer end of the exhaust pin (301) in the exhaust component (3) and the inner end of the exhaust pipe connector (303) are tightly sealed.

6. The exhaust pressure stabilizing safety valve body module according to claim 4, characterized in that... The exhaust pipe joint (303) of the exhaust assembly (3) and the pressure relief pipe joint (503) of the pressure relief assembly (5) are both connected to the same wastewater box (8) via external pipes.

7. A method for operating the exhaust pressure stabilizing safety valve body module as described in claim 4, characterized in that... The working method is as follows: When the electromagnetic pump (1) is working, the fluid enters the inlet channel (204) through the pump interface (201) of the multi-channel body (2). Since the pressure in the inlet channel is insufficient to lift the silicone plate (402) of the pressure stabilizing component (4) at the beginning of the start, the inlet channel and the outlet channel (205) are not connected. The exhaust pin (301) is lifted by the pressure at the inner end of the exhaust port (203). A part of the fluid and gas in the inlet channel is discharged to the outside along the exhaust groove (3011) on the side of the exhaust pin and the exhaust pipe joint (303). As the pump pressure increases to the outside of the exhaust pin, When the end is sealed with the inner end of the exhaust pipe connector, the pressure in the liquid inlet channel increases and lifts the silicone plate of the pressure stabilizing component. The liquid inlet channel and the liquid outlet channel form a pressure-stabilized communication state, and the pressure-stabilized liquid supply is formed to the boiler (6) pipe of the coffee machine through the pipe interface (202). When the pressure of the brewing device (7) of the coffee machine is too high or the boiler pipe is blocked, the sealing plug (501) of the pressure relief component (5) is lifted and the pressure regulating spring (502) is compressed. That is, the sealing plug is released from the inner end of the pressure relief port (207), and the gas and liquid are discharged from the pressure relief pipe connector (503) to realize the pressure relief operation.

8. The working method of the exhaust pressure stabilizing safety valve body module according to claim 7, characterized in that... When the pressure relief assembly (5) is disassembled relative to the pressure relief port (207) and the pressure relief port is connected to an external suction device, reverse suction is performed on the boiler (6) pipe and brewing device (7) of the coffee machine.

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