Identification method and application circuit of Numetics solenoid valve

Numetics solenoid valve is an "automatic switch" that uses a small current and voltage electrical signal to control the on/off of fluid pipelines. It has significant characteristics such as low cost, small size, fast switching speed, simple wiring, low power consumption, high cost-effectiveness, and economic practicality, and is therefore widely used in various aspects of the field of automatic control.

When the coil of the Numetics solenoid valve is not powered, it cannot generate a magnetic field. The armature moves to the right under the pushing force of the outer spring inside the guide sleeve, causing the rubber valve to be tightly pressed against the valve seat and the valve to close. After energizing the coil and generating a magnetic field, the magnetic field attracts the armature to move to the left. The inner spring is pulled to the left by the pull rod, compressing the outer spring and causing the rubber valve to move to the left. The valve is opened to discharge the water in the bucket.

(2) Air conditioner four-way reversing valve circuit

When the Numetics solenoid valve is operating in the cooling state, the electrical system does not provide 220V mains voltage to the coil of the solenoid guide valve, the coil cannot generate a magnetic field, and the armature does not move. At this point, the elastic force of spring 1 is greater than that of spring 2, pushing valve cores A and B to move to the left together. As a result, valve core A closes the guiding capillary tube D, while valve core B connects the guiding capillary tubes C and E. Due to the fact that piston 2 of the directional valve is connected to the return pipe of the compressor through the C pipe, guide valve, and E pipe, piston 2 drives the slider to move left due to the decrease in pressure on the left side, connecting pipe 4 to pipe 3 and pipe 2 to pipe 1. At this time, the indoor heat exchanger serves as the evaporator and the outdoor heat exchanger serves as the condenser.

In this way, the high-pressure and high-temperature gas discharged by the compressor enters the outdoor heat exchanger through the pipe 4 and pipe 3 of the directional valve, and begins to dissipate heat through the outdoor heat exchanger. Then, it enters the indoor heat exchanger through the capillary tube, absorbs heat and vaporizes using the indoor evaporator, and returns to the compressor through the circuit formed by pipe 1 and pipe 2, achieving the refrigeration function.

When the Numetics solenoid valve is operating in the heating state, the electrical system provides 220V mains voltage to the coil of the electromagnetic guide valve. The coil generates a magnetic field, causing the armature to move to the right, resulting in the valve cores A and B moving to the right. As a result, valve core A connects the guide capillary tubes D and E, while valve core B closes the guide capillary tube C. Due to the fact that piston 1 of the directional valve is connected to the return pipe of the compressor through the D pipe, guide valve, and E pipe, piston 1 drives the slider to move to the right due to the decrease in pressure on the right side, connecting pipe 4 to pipe 1 and pipe 3 to pipe 2. At this time, the indoor heat exchanger serves as the condenser and the outdoor heat exchanger serves as the evaporator.

The high-pressure and high-temperature gas discharged from the compressor in this way enters the indoor heat exchanger through the circuit formed by the directional valve's pipe 4 and pipe 1. The indoor heat exchanger begins to dissipate heat, and then enters the outdoor heat exchanger through capillary throttling and pressure reduction. The outdoor heat exchanger absorbs heat and vaporizes it, and then returns to the compressor through the circuit formed by pipe 3 and pipe 2 to achieve heating function.

1、 Composition of Numetics solenoid valve

Numetics solenoid valve is an automation basic component that uses electromagnetic force to control fluids, widely used in industrial automation, metallurgy and chemical engineering, mechanical manufacturing, power equipment and other fields. The solenoid valve mainly consists of the following parts:

1. Electromagnetism (coil): The core component of an electromagnetic valve, which is the key to achieving electromagnetic valve control. When the electromagnetic iron is energized, it generates a magnetic field that causes the valve to open or close.

2. Valve body: The valve body is the outer shell of the solenoid valve, used to secure the valve and coil. The material of the valve body is usually copper, iron, stainless steel, or aluminum.

3. Valve: Valve is a key component of solenoid valve, responsible for controlling the on/off of fluid. The material of valves is usually copper, iron, stainless steel, or plastic.

4. Spring: The spring is an auxiliary component of the solenoid valve, used to balance the force between the valve and the electromagnet, ensuring the normal operation of the valve.

5. Seals: Seals are an important component of solenoid valves, used to ensure the sealing performance of the valve. Common sealing materials include rubber, butyl rubber, fluororubber, etc.

2、 Components of Numetics solenoid valves

The Numetics solenoid valve consists of the following components:

1. Electromagnetic coil: As the core component of an electromagnetic valve, it is wound with copper wire. When powered on, the electromagnet will generate a magnetic field, causing the valve to open or close.

2. Valve: Valves are made of materials such as copper, iron, stainless steel, or plastic, and can control the flow of fluid when powered on.

3. Valve body: The valve body is the outer shell of the solenoid valve, used to secure the valve and coil. It is usually made of materials such as copper, iron, stainless steel, or aluminum.

4. Seals: Seals are an important component of solenoid valves, used to ensure the sealing performance of the valve. Common sealing materials include rubber, butyl rubber, fluororubber, etc.

5. Spring: The spring is an auxiliary component of the Numetics solenoid valve, used to balance the force between the valve and the electromagnet, ensuring the normal operation of the valve.

In short, Numetics solenoid valves are automation basic components composed of electromagnets, valves, valve bodies, seals, and springs, widely used in industrial automation, metallurgy and chemical engineering, mechanical manufacturing, power equipment and other fields. Understanding the composition and components of solenoid valves is of great significance for selecting and using them correctly.