CN115451446A - Intelligent internal circulation type range hood system adopting electrostatic adsorption and control method thereof - Google Patents

Abstract

The invention belongs to the technical field of range hoods, and discloses an intelligent internal circulation range hood system adopting electrostatic adsorption and a control method thereof. The oil smoke removing device has excellent oil smoke removing effect, and the electrostatic adsorption device is adopted, so that the operation efficiency of the range hood is ensured on the basis of ensuring the oil smoke removal; the intelligent range hood and the comfort level of the human living environment are widely improved, and the harmful gas is detected by various gas sensors at any time, so that the discharged gas is ensured to be non-toxic and harmless; and the RBF neural network system is utilized to carry out detection feedback of the control system, so that the reliability of the structure operation is ensured.

Description

Intelligent internal circulation range hood system using electrostatic adsorption and its control method

technical field

The invention belongs to the technical field of range hoods, and in particular relates to an intelligent internal circulation type range hood system using electrostatic adsorption and a control method thereof.

Background technique

The generation of soot during the cooking process is inevitable, especially the Chinese people have the habit of stir-frying for thousands of years, which aggravates the breeding of soot during the cooking process. Oil fume is a substance that poses a great threat to human health and environmental protection. Especially with the development of economy and society in recent years, people are increasingly pursuing a fresh and comfortable living environment. The range hood can effectively absorb the soot produced in the cooking process, so it has become an indispensable kitchen appliance for the masses.

The range hood is generally installed on the top of the stove, and the rotation of the wind wheel, the core component of the range hood, creates a negative pressure area on the top of the stove to extract the oil fumes. The "heart" wind wheel of the range hood is often covered with oil under long-term use. If it is not cleaned in time, it will affect the load of the range hood, resulting in a decline in performance indicators. At the same time, noise will be generated, which will affect people's physical and mental health. Therefore, general range hoods need to be cleaned after a certain period of time in use. Generally, most of the range hoods on the market use high-temperature steam or water for spraying. The treatment effect is not significant and the waste water cannot be recycled, which is not environmentally friendly. On the other hand, since the installation angle of the fan rotor blades of the range hood is very precise, if the user disassembles and washes it privately, problems such as blade assembly angle and blade bending will easily occur during assembly, which will affect the performance of the range hood. Therefore, if you want to solve this problem, the most direct way is to process the flue gas before it enters the wind turbine for oil fume separation. A clean and efficient way to remove oil fume is a technical problem that needs to be solved urgently.

On the other hand, the current household range hoods simply "move" the cooking fumes outside, and the harmful fumes are also a big threat to the environment. At the same time, since the oily fume is drawn outside, if the kitchen is closed and poorly ventilated for a long time, such as a very densely populated real estate in a big city, the indoor air may be thin. The best solution is to purify the generated oil fume and discharge it indoors. However, the removal and detection of harmful substances in the fume are very necessary. Therefore, an efficient and accurate detection and sterilization of the internal exhaust system of the range hood is the key.

Through the above analysis, the existing problems and defects of the prior art are: the fume removal of the existing range hood is not thorough, the long-term use affects the performance of the range hood, the exhaust fume exhaust gas is harmful to the environment, and the air quality of the internal exhaust is difficult to guarantee.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides an intelligent internal circulation range hood system using electrostatic adsorption and a control method thereof.

The present invention is achieved in this way. An intelligent internal circulation range hood system using electrostatic adsorption includes:

The oil fume absorption and purification module is used to ionize and absorb the oil fume, cool down, and then perform filtering, sterilization and air replenishment operations;

The air detection and emission module is connected with the oil fume absorption and purification module through the flue and the flue gas cooling unit, which is used to detect the quality of the purified flue gas and discharge it indoors under the indicators of human comfort and health;

The machine control module is respectively connected with the oil fume absorption and purification module and the air detection and emission module, and is used to coordinate and control the operation of each module.

Further, the oil fume absorption and purification module includes an electrostatic device, a volute, a motor, an impeller, an inner row assembly, a control panel, an oil net and an oil cup, the oil net is used for preliminary cooling of the oil fume, and the oil cup is installed on the The lower end of the range hood is used for the cooled oil fume to flow into the oil cup through a certain flow direction. The electrostatic device is set on the upper side of the oil net, and the motor and impeller are located on the upper side of the electrostatic device. The impeller is driven by the motor, and the oil fume treated by the electrostatic device passes through The volute flows into the flue, and the inner row components are arranged in the flue.

Further, the inner row assembly includes a display screen, an activated carbon filter cartridge, an ultraviolet lamp, an anion generator, an inner row assembly shell, a humidifier, a supplementary air motor, a fan, a sensor assembly, an air outlet net and an air induction plate, and the activated carbon Filter cartridges, ultraviolet lamps, negative ion generators, and humidifiers sterilize, filter, and humidify oil fumes, and use display screens and sensor components to detect harmful substances and display alarms. The re-filtering of the air outlet net is passed into the room under the guidance of the air-inducing plate.

Further, the electrostatic device includes an ionization electrode and an adsorption electrode plate, the ionization electrode is set as a tip with multiple parts, the adsorption electrode plate is set in a cylindrical structure, and the adsorption electrode plate is provided to facilitate further ionization of oil fume, increase Toothed structure with oil fume adsorption area and oil fume diversion.

Further, a filter is provided at the entrance of the electrostatic device.

Further, an air outlet assembly is provided between the oil fume absorption and purification module and the flue, and a filter device is provided at the oil fume air outlet.

Further, the flue gas cooling unit is arranged in the flue and is in the form of a serpentine tube heat exchanger, including a water tank, a serpentine tube and a water pump. The serpentine tube is wound outside the flue, and the cooling water is delivered by the water pump , through the multi-layer spiral arrangement of cooling water, the oil fume is fully cooled.

Another object of the present invention is to provide a control method for an intelligent internal circulation range hood system using electrostatic adsorption, the control method for the intelligent internal circulation range hood system using electrostatic adsorption includes:

Step 1: The motor drives the impeller to rotate, forming a negative pressure zone on the upper end of the cooktop, sucking the oil fume into the range hood, and ionizing and adsorbing it through an electrostatic device;

Step 2, the oil fume after electrostatic treatment flows into the flue through the volute, and uses the flue gas cooling unit in the flue to cool down;

Step 3, the cooled oil fume undergoes a series of filtering, sterilizing and air replenishing operations in the inner exhaust module;

Step 4: Use the air detection system in the air detection and emission module to detect the quality of the processed flue gas, and discharge it indoors when it meets the indicators of human comfort and health, and use the RBF neural network compensation algorithm to check the detection system of the range hood. Amended to ensure the freshness of the discharged indoor air.

Further, the RBF neural network has a three-layer neural network structure. The first layer is an input layer, which is composed of signal input nodes, and is the measured value detected by each gas sensor; the second layer is a hidden layer, and the hidden layer nodes The number depends on the problem to be described, and the function composition usually adopts Gaussian radial basis function; the third layer is the output layer, which mainly responds to and outputs the input signal, and is the expected concentration value of each harmful substance gas in the oil fume.

Further, the transformation from the input layer space to the hidden layer space is nonlinear, while the transformation from the hidden layer space to the output layer space is linear;

The expression of the hidden layer Gaussian radial basis function is:

Among them, α _i is the output of hidden node _i ; ci is the center vector corresponding to the i-th hidden layer node; σ _i is the width of the corresponding i radial basis function.

The output layer network expression is:

Among them, y _j is the grid output of node j in the output layer; W _ij is the connection weight from hidden layer node i to output layer node j; n is the number of hidden layer nodes. The RBF algorithm described has strong practicability, simple structure and no local minimum problem.

Combining the above-mentioned technical solutions and technical problems to be solved, the advantages and positive effects of the technical solutions to be protected in the present invention are as follows:

First, in view of the technical problems existing in the above-mentioned prior art and the difficulty of solving the problems, closely combine the technical solution to be protected in the present invention and the results and data in the research and development process, etc., to analyze in detail and profoundly how to solve the technical solution of the present invention Technical problems, some creative technical effects brought about after solving the problems. The specific description is as follows:

1) The oil fume removal effect is excellent. The electrostatic adsorption device is used. On the basis of ensuring the removal of oil fume, the electrostatic device is placed before the fan system to effectively ensure the service life of the motor and ensure the operating efficiency of the range hood.

2) The intelligence of the range hood and the comfort of the living environment have been extensively improved. Internal row components are used, and various gas sensors are used to detect harmful substances and gases from time to time to ensure that the exhaust gas is non-toxic and harmless; RBF neural network is used The system performs the detection feedback of the control system to ensure the reliability of the structure operation.

Second, regarding the technical solution as a whole or from the perspective of a product, the technical effects and advantages of the technical solution to be protected by the present invention are specifically described as follows:

The invention is environmentally friendly, highly feasible and intelligent, and the treatment of oily fumes completely realizes "internal circulation", and at the same time, the heat of high-temperature oily fumes can also be utilized; the use process of the range hood basically realizes intelligence.

Description of drawings

Fig. 1 is a schematic diagram of an intelligent internal circulation range hood system using electrostatic adsorption provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of an intelligent internal circulation range hood system using electrostatic adsorption provided by an embodiment of the present invention;

Fig. 3 is a diagram of an electrostatic adsorption device provided by an embodiment of the present invention;

Fig. 4 is a diagram of the ventilation assembly of the range hood provided by the embodiment of the present invention;

Fig. 5 is a part diagram of the inner row assembly provided by the embodiment of the present invention;

Fig. 6 is a schematic diagram of electrostatic adsorption provided by an embodiment of the present invention;

Fig. 7 is a structural diagram of a cooking fume detection system provided by an embodiment of the present invention;

FIG. 8 is a structural diagram of a BRF neural network provided by an embodiment of the present invention;

Fig. 9 is a specific implementation flowchart provided by an embodiment of the present invention;

In the figure: 1, electrostatic device; 2, volute; 3, motor; 4, impeller; 5, air outlet assembly; 6, flue; 7, filter screen; 8, control panel; 9, oil screen; 10, oil Cup; 11. Water pump; 12. Water tank; 13. Cooling water pipe; 14. Display screen; 15. Housing; 16. Adsorption pole; 17. Ionization pole; 18. Filter device; 19. Activated carbon filter cartridge; ; 21, negative ion generator; 22, inner row component shell; 23, humidifier; 24, supplementary wind motor; 25, fan; 26, sensor assembly;

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

1. Explain the embodiment. In order to make those skilled in the art fully understand how to implement the present invention, this part is an explanatory embodiment for explaining the technical solution of the claims.

As shown in Figure 1, the intelligent internal circulation range hood system using electrostatic adsorption provided by the embodiment of the present invention includes:

The oil fume absorption and purification module is used to ionize and absorb the oil fume, cool down, and then perform filtering, sterilization and air replenishment operations;

The air detection and emission module is connected with the oil fume absorption and purification module through the flue and the flue gas cooling unit, which is used to detect the quality of the purified flue gas and discharge it indoors under the indicators of human comfort and health;

The machine control module is respectively connected with the oil fume absorption and purification module and the air detection and emission module, and is used to coordinate and control the operation of each module.

As shown in Figure 2 and Figure 3, the electrostatic adsorption system of the intelligent internal circulation range hood system using electrostatic adsorption provided by the embodiment of the present invention includes

Electrostatic device 1, volute 2, motor 3, impeller 4, filter screen 7, control panel 8, oil screen 9 and oil cup 10, the control panel 8 starts the range hood to enter the working state, and the oil fume passes through the oil screen 9. Preliminary cooling is carried out, and the cooled oil fume flows into the oil cup 10 through a certain flow direction, and the oil cup 10 is installed at the lower end of the range hood for subsequent disassembly and cleaning. After the oil fume is collected by the oil screen 9 and the oil cup 10, it is filtered by the filter screen 7 and enters the electrostatic device 3 for further removal. The electrostatic device 1 is placed in front of the motor 3. The electrostatic device 1 includes an adsorption electrode 16 and an ionization electrode 17. The primary oil fume is removed through the ionization of the ionization electrode 17 and the adsorption of the adsorption electrode 16. The oil fume processed by the electrostatic device 3 flows in a specific direction through the volute 2 .

As shown in Figure 2 and Figure 4, the air outlet and cooling system of the intelligent internal circulation range hood system using electrostatic adsorption provided by the embodiment of the present invention includes an air outlet assembly 5, a flue 6, a water pump 11, a water tank 12 and a cooling system. water pipe13. The air outlet assembly 5 includes a filter device 18 . The oil fume is further purified and guided into the flue 6 through the air outlet assembly 5. The oil fume needs to be cooled and cooled in the flue. The cooling form is a serpentine tube heat exchanger, and the cooling The water pipe 13 is "wound" on the outside of the flue, and the circulating water is supplemented by the water pump 11. The cooling water after heat exchange can be used to supplement the water source of the dishwasher, the disinfection cabinet and the water tank. The water tank 12 is only for the convenience of display in this article a form.

As shown in Figure 2 and Figure 5, the internal row components of the intelligent internal circulation range hood system provided by the embodiment of the present invention include a display screen 14, an activated carbon filter cartridge 19, an ultraviolet lamp 20, and an anion generator 21. Inner row assembly shell 22, humidifier 20, supplementary air motor 24, supplementary fan 25, sensor assembly 26, air outlet net 27 and air induction plate 28. After the oil fume passes through the flue 6, it enters the inner exhaust unit, passes through the activated carbon filter cartridge 19, the ultraviolet lamp 20, the anion generator 21 and the humidifier 20 for sterilization, filtration and humidification operations, and detects harmful substances through the detection of the sensor assembly. The detection alarm display work, under the effect of supplementary air motor 24 and supplementary fan 25, through the re-filtering of air outlet net 27, pass into the room under the diversion of air guide plate 28, practice " internal circulation " of range hood.

As shown in FIG. 7 , it is a structural diagram of the oil fume detection system of the intelligent internal circulation range hood system using electrostatic adsorption provided by the embodiment of the present invention. The oil fume processed by the electrostatic device 1 of the range hood has undergone a series of operations such as filtration and sterilization, and there may still be harmful pollutants. The harmful pollutants are detected and recorded by the sensor group, assuming that the expected value of each harmful substance in the oil fume is 0 , that is, the purified oil fume is "completely clean". When the concentration of harmful substances detected by the sensor is lower than or equal to the expected value of the harmful substance concentration set by the system, the machine controller controls the operation of the supplementary air fan to send fresh and comfortable air into the room.

The control method of the intelligent internal circulation type range hood system using electrostatic adsorption provided by the embodiment of the present invention includes:

Step 1: The motor drives the impeller to rotate, forming a negative pressure zone on the upper end of the cooktop, sucking the oil fume into the range hood, and ionizing and adsorbing it through an electrostatic device;

Step 2, the oil fume after electrostatic treatment flows into the flue through the volute, and uses the flue gas cooling unit in the flue to cool down;

Step 3, the cooled oil fume undergoes a series of filtering, sterilizing and air replenishing operations in the inner exhaust module;

Step 4: Use the air detection system in the air detection and emission module to detect the quality of the processed flue gas, and discharge it indoors when it meets the indicators of human comfort and health, and use the RBF neural network compensation algorithm to check the detection system of the range hood. Amended to ensure the freshness of the discharged indoor air.

The RBF neural network in the embodiment of the present invention has a three-layer neural network structure. The first layer is an input layer, which is composed of signal input nodes and is the measured value detected by each gas sensor; the second layer is a hidden layer, which implies The number of layer nodes depends on the problem to be described, and the function composition usually adopts Gaussian radial basis function; the third layer is the output layer, which mainly responds to and outputs the input signal, and is the expected concentration of each harmful substance gas in the oil fume value.

In the embodiment of the present invention, the transformation from the input layer space to the hidden layer space is nonlinear, and the transformation from the hidden layer space to the output layer space is linear;

The expression of the hidden layer Gaussian radial basis function is:

Among them, α _i is the output of hidden node _i ; ci is the center vector corresponding to the i-th hidden layer node; σ _i is the width of the corresponding i radial basis function.

The output layer network expression is:

Among them, y _j is the grid output of node j in the output layer; W _ij is the connection weight from hidden layer node i to output layer node j; n is the number of hidden layer nodes. The RBF algorithm described has strong practicability, simple structure and no local minimum problem.

As shown in Figure 7 and Figure 8, the network structure diagram of the RBF algorithm detection structure of the intelligent internal circulation range hood system using electrostatic adsorption. Because the range hood is an internal exhaust system, the use of general sensors has certain limitations, that is, the problem of detection accuracy. The RBF algorithm structure is used to analyze the correction of sensor records, aiming to ensure that the user's health is further guaranteed. The concentration values of harmful substances in various oil fumes recorded by the sensor are RBF input layer data, which are processed by the RBF model and output as corrected output layer data to achieve the purpose of accurate air quality detection. It should be noted that the RBF algorithm can be used with certain software and hardware, and the system containing the algorithm can be placed in the upper computer or lower computer to facilitate the production and manufacture of intelligent internal exhaust range hoods.

In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

It should be noted that the embodiments of the present invention can be realized by hardware, software, or a combination of software and hardware. The hardware part can be implemented using dedicated logic; the software part can be stored in memory and executed by a suitable instruction execution system such as a microprocessor or specially designed hardware. Those of ordinary skill in the art will understand that the above-described devices and methods can be implemented using computer-executable instructions and/or contained in processor control code, for example, on a carrier medium such as a magnetic disk, CD or DVD-ROM, such as a read-only memory Such code is provided on a programmable memory (firmware) or on a data carrier such as an optical or electronic signal carrier. The device and its modules of the present invention may be implemented by hardware circuits such as VLSI or gate arrays, semiconductors such as logic chips, transistors, etc., or programmable hardware devices such as field programmable gate arrays, programmable logic devices, etc., It can also be realized by software executed by various types of processors, or by a combination of the above-mentioned hardware circuits and software such as firmware.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, whoever is within the spirit and principles of the present invention Any modifications, equivalent replacements and improvements made within shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an adopt electrostatic absorption's intelligent inner loop formula range hood system which characterized in that, adopt electrostatic absorption's intelligent inner loop formula range hood system includes:

the oil smoke absorption and purification module is used for ionizing, adsorbing and cooling oil smoke, and then carrying out filtering, sterilizing and air supplementing operations;

the air detection and emission module is connected with the oil smoke absorption and purification module through the flue and the smoke cooling unit and is used for detecting the quality of the purified smoke and emitting the smoke into a room when the smoke reaches the indexes of comfort and health of a human body;

and the machine control module is respectively connected with the oil smoke absorption and purification module and the air detection and discharge module and is used for performing coordination control on the operation of each module.

2. The system according to claim 1, wherein the oil smoke absorption and purification module comprises an electrostatic device, a volute, a motor, an impeller, an inner discharge type assembly, a control panel, an oil screen and an oil cup, the oil screen is used for primarily cooling the oil smoke, the oil cup is installed at the lower end of the range hood and used for allowing the cooled oil smoke to flow into the oil cup in a certain flow direction, the electrostatic device is arranged at the upper side of the oil screen, the motor and the impeller are arranged at the upper side of the electrostatic device, the impeller is driven by the motor, the oil smoke processed by the electrostatic device flows into the flue through the volute, and the inner discharge type assembly is arranged in the flue.

3. The system according to claim 2, wherein the inner row type assembly comprises a display screen, an activated carbon filter cartridge, an ultraviolet lamp, an anion generator, an inner row assembly housing, a humidifier, an air supplement motor, a fan, a sensor assembly, an air outlet net and an air guide plate, the activated carbon filter cartridge, the ultraviolet lamp, the anion generator and the humidifier are used for sterilizing, filtering and humidifying the oil smoke, the display screen and the sensor assembly are used for detecting and alarming harmful substances, and the oil smoke is filtered again through the air outlet net under the action of the air supplement motor and the fan and is led into the room under the flow guidance of the air guide plate.

4. An intelligent internal circulation type range hood system using electrostatic adsorption as claimed in claim 2, wherein the electrostatic device comprises an ionization electrode and an adsorption electrode plate, the ionization electrode is configured to have a tip with multiple positions, the adsorption electrode plate is configured to be a cylindrical structure, and the adsorption electrode plate is provided with a tooth-shaped structure which is beneficial to further ionization of the oil smoke, increase of the oil smoke adsorption area and oil smoke diversion effect.

5. An intelligent internal circulation type extractor hood system using electrostatic absorption according to claim 2, wherein a filter screen is disposed at the inlet of the electrostatic device.

6. An intelligent internal circulation type range hood system using electrostatic absorption according to claim 1, wherein an air outlet assembly is disposed between the oil smoke absorption and purification module and the flue, and the oil smoke outlet is provided with a filtering device.

7. An intelligent internal circulation type range hood system using electrostatic absorption as claimed in claim 1, wherein said flue gas cooling unit is disposed in the flue, and is in the form of a serpentine tube heat exchanger, and comprises a water tank, a serpentine tube and a water pump, wherein said serpentine tube is wound outside the flue, and the cooling water is delivered by the water pump, and the oil smoke is sufficiently cooled by the multi-layer spiral arrangement of the cooling water.

8. A control method for implementing the intelligent internal circulation type range hood system using electrostatic adsorption according to any one of claims 1 to 7, wherein the control method for the intelligent internal circulation type range hood system using electrostatic adsorption comprises the following steps:

the method comprises the following steps that firstly, an impeller is driven to rotate through a motor, a negative pressure area is formed at the upper end of a cooking bench, lampblack is sucked into a lampblack absorber, and ionization adsorption is carried out through an electrostatic device;

secondly, enabling the oil smoke subjected to electrostatic treatment to flow into a flue through a volute, and cooling by using a smoke cooling unit in the flue;

thirdly, the cooled oil smoke is subjected to a series of operations of filtering, sterilizing and air supplementing in the internal exhaust type assembly;

and step four, detecting the quality of the treated smoke by using an air detection system in the air detection and discharge module, discharging the smoke into a room when the smoke reaches the indexes of human comfort and health, and correcting the detection system of the range hood by using a RBF neural network compensation algorithm.

9. The method according to claim 8, wherein the RBF neural network has a three-layer neural network structure, a first layer being an input layer consisting of signal input nodes, which are measured values detected by the respective gas sensors; the second layer is a hidden layer, the number of nodes of the hidden layer is determined according to the problem to be described, and the function composition usually adopts a Gaussian radial basis function; the third layer is an output layer which mainly responds to and outputs the action of the input signal and is the expected concentration value of each harmful substance gas in the oil smoke.

10. The method as claimed in claim 8, wherein the transformation from the input layer space to the hidden layer space is non-linear, and the transformation from the hidden layer space to the output layer space is linear;

the expression of the hidden layer Gaussian radial basis function is as follows:

wherein alpha is _i Is the output of hidden node i; c. C _i Is the central vector of the corresponding ith hidden layer node; sigma _i Corresponding to the width of the i radial basis functions.

The output layer network expression is:

wherein, y _j Outputting the grid output of the layer node j; w is a group of _ij The connection weight value from the hidden layer node i to the output layer node j; n implies the number of tier nodes. The RBF algorithm has the advantages of strong practicability, simple structure and no local minimum value problem.

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