How to determine the oil fume? What are the monitoring methods for oil smoke?

The test content of the range hood:

Signs and instructions.

Protection against personal danger.

High and low pressure operation.

Energy consumption temperature rise. Overloaded.

Electrical strength and leakage current in working condition.

Suppression of TV interference.

Moisture resistance test.

Electrical strength and leakage current in wet state.

Overload protection of transformers and related circuits.

Fatigue test. Running with abnormal work.

Instability and mechanical injury tests.

Mechanical hazard test.

Structural design confirmation.

Plausibility test of internal electrical connection.

Confirm the safety of electrical accessories.

External power connection safety check.

Inspection of the connection method of the outer conductor.

Safety grounding rationality test.

Inspection of mechanical and electrical connection screws.

Inspection of electrical hazard distances.

Hazard testing of non-metallic materials.

Hazard testing of metal materials.

Inspection of the hazards of the appliance to the environment.

According to the principle, there are three monitoring methods for oil smoke:

1. Principle of electrochemical monitoring.

When the soot particles enter the sensor, the pore of the sensor will receive the soot particles, which will lead to an increase in the resistance of the sieve, which will affect the change of the current intensity, because there is a linear relationship (proportional relationship) between the current intensity and the smoke concentration, so that the fume concentration can be calculated according to the electric field (current) intensity.

Second, the principle of light monitoring.

It adopts bilateral fixed installation, one end is the transmitting end, and the other end is the receiving end. When the smoke particles enter the sensor, when the smoke particles intersect with the laser beam, the receiver will receive such an optical change, so that the size of the smoke concentration can be obtained.

Compared with the principle of electrochemical monitoring, its monitoring accuracy is high, the vibration resistance of bilateral installation is poor, the numerical inaccuracy is easy to occur after deviation, and the vibration of the purifier outlet is large.

3. Principle of light scattering monitoring.

According to the measurement principle, there are two types of particle concentration measurement techniques for light scattering: static light scattering and scattering focusing. According to the size of the scattering angle, the static light scattering method can be divided into forward light scattering method and backward light scattering method.

Forward light scattering: Optical oil smoke monitors are based on the principle of forward light scattering. A laser with a wavelength of 635nm is irradiated into the measured flue, and the smoke particles present in the flue cause the laser beam to be scattered, and the scattered light intensity is proportional to the amount of smoke particles.

Therefore, it is possible to establish a previously determined correspondence between the concentration of oil smoke and the intensity of the light scattered by the laser. After the standard concentration calibration in the factory, the accurate concentration of oil smoke can be obtained by measuring the scattered light intensity. Unilateral installation, good vibration resistance; A backflush system is installed, which is maintenance-free and has high precision.

Backscattering: The backscattering method uses the radiative conduction equation of the medium to describe the multiscattering process, and then selects appropriate boundary conditions to solve the equation. The measurement device for the backscattering method is also relatively simple, with the laser and photodetector on the same side, eliminating the need for angle calibration.

Concentrated light scattering method: In this method, the monochromatic light source (infrared) emitting end of the monitoring channel is in a straight line with the receiving end, when the sample enters the monitoring channel and intersects with the infrared to produce scattered light, the receiving end accepts this optical change, converts it into a digital signal (electrical signal), and transmits it to the detector for display after amplification. It is about 10 times higher than the forward dispersion accuracy.

The easiest way to test the concentration of oil smoke is to use a smoke concentration detector.

1. MH3100 portable rapid oil smoke detector of electrostatic charge method, 2. MH3101 portable oil smoke detector, oil smoke: fine and loose black soot deposited by incomplete combustion of oil substances;

The particle size of oil smoke is in microns. It has the characteristics of small particle size and strong adhesion, and the oil smoke pollution formed is large, wide, low altitude and strong diffusion, which is more harmful to the human body. Oily smoke pollution is getting worse day by day.

Signs and instructions.

Protection against personal danger.

High and low pressure operation.

Energy consumption temperature rise. Overloaded.

Electrical strength and leakage current in working condition.

Suppression of TV interference.

Moisture resistance test.

Electrical strength and leakage current in wet state.

Overload protection of transformers and related circuits.

Fatigue test. Running with abnormal work.

Instability and mechanical injury tests.

Mechanical hazard test.

Structural design confirmation.

Plausibility test of internal electrical connection.

Confirm the safety of electrical accessories.

External power connection safety check.

Inspection of the connection method of the outer conductor.

Safety grounding rationality test.

Inspection of mechanical and electrical connection screws.

Inspection of electrical hazard distances.

Hazard testing of non-metallic materials.

Hazard testing of metal materials.

Inspection of the hazards of the appliance to the environment.

Summary. Since oil smoke monitoring is an emerging industry, many people do not know about the installation of oil smoke monitoring equipment, and the installation methods of various manufacturers are not the same.

Oil smoke monitoring includes equipment and systems, which are generally installed and then configured to connect to the system. Shuangni oil smoke monitoring equipment is composed of four parts: the main unit, the display screen, the oil smoke probe, and the antenna. The installation process is as follows:

1.Install the probe mount, put the probe in, and connect it to the main unit.

The probe is mainly used for gas transmission, and is generally installed at the pipe of the square meter behind the fume purifier of the catering unit.

2.Fix the host, install antennas and sensors, and connect to the power supply.

Generally, the length of the connection line between the probe and the host is meters, so the host should be fixed within the meter of the probe, try to consider whether the location is waterproof and sunproof and whether it is convenient to connect to electricity, and then connect the antenna and sensor to the host and then turn on the power supply.

3.To register the configuration, follow the steps.

Do the above steps.

Since oil smoke monitoring is an emerging industry, many people do not know about the installation of oil smoke monitoring equipment, and the installation methods of various manufacturers are not the same. Shuangni oil smoke monitoring equipment oil smoke monitoring includes bending key equipment and systems, generally installed oil smoke monitoring equipment, and then configured to connect to the system. Shuangni oil smoke monitoring equipment is composed of four parts: the main unit, the display screen, the oil smoke probe, and the antenna.

The installation process is as follows:1Install the probe mount, put the probe in, and connect it to the main unit.

The virtual head is mainly used as a gas transmission function, and is generally installed at the pipe of the square meter behind the fume purifier of the catering unit, select the position, install the probe fixing frame, put the probe into the probe, and then connect the probe connection line to the host. 2.Fixed the main unit, install an antenna, include an alarm sensor, and connect to the power supply.

Generally, the length of the connection line between the probe and the host is meters, so the host should be fixed within the meter of the probe, try to consider whether the location is waterproof and sunproof and whether it is convenient to connect to electricity, and then connect the antenna and sensor to the host and then turn on the power supply. 3.To register the configuration, follow the steps.

Do the above steps.

Hope mine is helpful to you.

Hello, 1The installation of the probe is generally divided into a probe and a host, the probe is mainly used as a gas transmission, and the host is used as a data acquisition and data transmission. The installation of the probe is generally installed 1 meter after the rear end of the fume purifier, and if the catering enterprise does not install the purifier, it is installed before the front end of the exhaust outlet 1 meter.

The hole position of the probe is divided into the probe hole position and the fixed frame hole position. 2.The installation position of the host should pay attention to the following points, because the length of the connection line between the probe and the host is meters, so after the installation of the probe, the host needs to be installed within meters, and the installation of the host also needs to consider whether the waterproof and sunscreen and power connection are convenient.

Generally, it is installed indoors or under a shelter, which can prolong the life of the host. 3.After the system is equipped with envy after the installation of oil smoke monitoring, it is necessary to register and configure the oil smoke monitoring, connect the monitoring platform in the future, whether the oil smoke meets the emission standards, the monitoring system will be clear at a glance, and the monitoring data information will be sent to the mobile phone of the person in charge of the urban department and catering enterprises, and the oil smoke will have a strong basis for disturbing the people.

According to the supervisors, if the emission of oil fumes is not up to standard, the purifier is not started, and there is a phenomenon of oil smoke disturbing the people, the regulatory department personnel will come to the door to require them to rectify the punishment, and if there is any objection to the result, a third-party monitoring company can be authorized to come to the door to monitor and prove it again! At the same time, the oil fume monitoring system can also monitor the cleaning cycle of the oil fume purifier, and catering enterprises must clean the purifier according to a certain period and upload records to ensure that the oil fume emission reduction is implemented.

According to the different scale of catering business units, it is divided into large, medium and small, and the minimum removal efficiency of the fume purifier is % and 85% respectively, and for the maximum allowable emission concentration, this is mainly for the existing catering business unit fume emission management, as well as the design of the newly established catering business unit, environmental impact assessment, environmental impact assessment, completion and acceptance of environmental protection facilities and the management of fume emission during its operation; The food processing units and non-operating units emit oily fumes have internal staff canteens, and there are no requirements for household oily fume emissions. These two standards are aimed at the requirements of oil fume purifiers for oil fume treatment, but there are no clear regulations on taste. The discharge height of the oil smoke exhaust cylinder should be higher than the roof of the building where the exhaust cylinder is located or attached, and the length of the straight pipe section between the fan and the exhaust port should meet the requirements of the sampling position.

Meets the length of the straight pipe section required for the sampling location and the exhaust port must not be facing the vulnerable building. If there are susceptible buildings within a 20m radius of the exhaust outlet of the catering establishment, which is higher than the exhaust outlet of the catering establishment. Electrostatic Filter:

When the gas containing dust particles passes through the high-voltage electric field formed between the cathode wire (also known as the corona electrode) connected to the high-voltage DC power supply and the grounded anode plate, due to the corona discharge of the cathode and the gas is ionized, at this time, the negatively charged gas ions, under the action of the electric field force, move towards the sunny plate, and collide with the dust particles in motion, then the dust particles are charged with negative electricity, and the charged dust particles also move to the anode under the action of the electric field force, and after reaching the anode, the electrons carried are released, and the dust particles are deposited on the anode plate. The purified gas is discharged from the dust filter.

With the approach of the "Golden Nine Silver Ten" decoration season, many people are easy to fall into the blind spot of consumption when purchasing household appliances such as range hoods, thinking that the greater the suction power of the range hood, the better the effect of removing the oil smoke, but the effect is not the case in the actual use process, and even the greater the suction power of some range hoods, the more serious the phenomenon of oil smoke escape. In this regard, some experts remind that when the public buys a range hood, in addition to looking at the suction power of the range hood, they also need to look at the actual removal rate of the range hood. In addition to solving the drawbacks of the design and construction of ordinary range hoods, Haier demeanor range hoods can also form a deep cavity spherical negative pressure area during use, and the negative pressure value area exceeds, according to the principle of aerodynamics, under the action of this wind pressure, the oil smoke will quickly form a rising tornado, quickly enter the flue through the oil network, and discharge outdoor. ‍‍