A high-efficiency smoke exhaust fan system for integrated stoves

Abstract

A high-efficiency smoke exhaust fan system for an integrated stove comprises a fan box, a fan and an intelligent adjustment box arranged in an air intake passage of the integrated stove; the fan box is located at the back of the integrated stove, and the fan is located in the fan box and is wrapped by the fan box; the fan comprises a volute, a motor, an impeller and an air outlet duct, and the intelligent adjustment box is a rectangular box body, one end of which is connected to the volute, and the other end is connected to the air outlet duct; a lifting system, a temperature control system, a test system and an oil return system are arranged inside the intelligent adjustment box; the present invention is based on heat transfer knowledge and the Bernoulli equation to reduce the effects of grease accumulation, low environmental applicability and energy waste on the integrated stove.

Description

Technical Field

[0001] The present invention belongs to the field of integrated stoves, and in particular relates to a high-efficiency smoke exhaust fan system for integrated stoves. Background Art

[0002] As a commonly used household appliance, integrated stoves play an important role in people's lives, and the integrated stove's smoke exhaust effect, intelligent adjustment, and environmental adaptability have become important indicators for customers to choose.

[0003] At present, traditional integrated stoves usually only set a single working environment when working, and different working environments have different requirements for the performance of integrated stoves; traditional integrated stoves usually pursue large air volume, and setting too high air volume will lead to energy waste and excessive noise. However, the current demand for lower working noise of integrated stoves has exceeded the demand for large air volume;

[0004] In addition, traditional intelligent wind speed adjustment usually places sensors in public flues. However, the public flue environment is complex, the sensor measurement accuracy cannot be guaranteed, and the flue is too far away from the motor, resulting in a long adjustment delay. Therefore, conventional settings cannot meet people's higher demands for integrated stove operation. Summary of the invention

[0005] In order to overcome the shortcomings of traditional integrated stoves such as energy waste, high air intake noise and high adjustment delay, the present invention provides a new fan system for integrated stoves, which reduces the effects of grease accumulation, low environmental applicability and energy waste on integrated stoves based on heat transfer knowledge and Bernoulli's equation.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A high-efficiency smoke exhaust fan system for an integrated stove, comprising a fan box, a fan and an intelligent adjustment box arranged in an air intake passage of the integrated stove; the fan box is located at the back of the integrated stove, and the fan is located in the fan box and is wrapped by the fan box;

[0008] The fan comprises a volute, a motor, an impeller and an air outlet pipe, wherein the motor and the impeller are located in the volute, the volute is connected to an intelligent regulating box, the motor is a variable frequency motor, and its speed is adjustable; the air outlet pipe is a circular air outlet pipe, and one end of the air outlet pipe is connected to the intelligent regulating box;

[0009] The intelligent regulating box is a rectangular box, one end of which is connected to the volute and the other end is connected to the air outlet pipe; the intelligent regulating box is located at the bottom of the fan box and is connected to the bottom plate of the fan box; a lifting system, a temperature control system, a test system and an oil return system are arranged inside the intelligent regulating box; the lifting system is located at the bottom of the intelligent regulating box, and the lifting system includes a controller, an electromagnet, an adjustment spring and a moving iron block. The controller and the electromagnet are located at the bottom of the intelligent regulating box, and the controller is a rectangular box structure, which is connected to the electromagnet and controls the current direction of the electromagnet; the The moving magnets are evenly distributed at the four bottom corners of the intelligent adjustment box and fixed on the bottom surface of the intelligent adjustment box; the adjustment spring is located on the moving magnetic block, and the other end thereof is connected to the moving iron block; the lower surface of the moving iron block is a smooth rectangle, and a table-like structure is inscribed in the upper half of the moving iron block, and the table-like structure is placed concavely, the upper plane is rectangular, and the lower surface is circular, and the area of ​​the rectangular surface is larger than the area of ​​the circular surface; the side of the oil return system is the oil return surface of the device, and the circular lower surface is the inlet of the oil return system, and the lower end of the inlet is connected to the telescopic oil storage cup, and the telescopic oil storage cup moves up and down with the moving iron block;

[0010] The temperature control system is located on the side wall of the intelligent regulating box, and includes a waste heat utilization module and an electric heat generation module. The waste heat utilization module is connected to the fan motor through a heat transfer pipe; the heat transfer pipe is a circular pipe, and a heat transfer medium flows inside it. The test system is also located on the side wall of the intelligent regulating box, and is composed of a number of pressure sensors to detect the pressure value in the box in real time;

[0011] The oil leakage system is located at the upper end of the lifting device, and includes an oil return hole, an oil return surface and an oil return tank. The oil return hole is a circular oil hole, and the oil return surface is an inclined plane, the bottom end of which converges with the circular oil hole; the oil return tank is a cylindrical structure with a telescopic part in the middle, and the oil return tank is adjusted up and down with the moving iron block.

[0012] Furthermore, the intelligent regulating box is located at the bottom of the fan and includes a temperature control component, a pressure detection component and a pressure regulating component; the pressure detection component senses the pressure change of the static pressure box through a pressure sensor located on its side wall and changes the speed of the variable frequency motor accordingly; the pressure regulating component is composed of a thermal module and a lifting module, and the lifting module changes the degree of pressure change in the regulating box by adjusting the volume of the regulating box; the heating module converts thermal energy into the internal energy of the flowing gas.

[0013] Furthermore, when the temperature increasing module is in operation, the waste heat storage module is mainly used, and the electric heat self-production module is only started when the static pressure is seriously insufficient.

[0014] Furthermore, the lifting system is precisely controlled by electromagnetic control, and the control equation is obtained by balancing the gravity, elastic force and electromagnetic force. The magnitude and direction of the electromagnet current are changed by the controller to control the lifting of the moving iron block. The working principle is:

[0015]

[0016] Among them, M is mass, g is gravitational acceleration, K is Hooke's law stiffness coefficient; S is the stretching length, N is the number of coil turns, I is the current, Q is the charge number, and L is the distance between the electromagnetics.

[0017] The oil return surface has an inclination angle of 5-8°, which helps to allow the droplets accumulated on the surface of the return surface to flow into the oil storage tank.

[0018] Preferably, the regulation of the pressure regulating assembly is based on the Bernoulli equation:

[0019]

[0020] Among them, P1 is the pressure before entering the regulating box, P2 is the pressure inside the regulating box, ρ represents the density, v1 represents the fluid movement speed before entering the regulating box, v2 represents the fluid movement speed inside the regulating box, g represents the gravitational acceleration, h1 represents the height before entering the regulating box, and h2 represents the height inside the regulating box.

[0021] According to the Bernoulli equation, the water heads at both positions are equal. When the oil smoke enters the large-space intelligent regulating box, the speed is reduced and the pressure is increased, which increases the static pressure of the integrated stove exhaust. While meeting the required air volume for work, the static pressure is increased, which is helpful for exhaust and reduces noise.

[0022] The pressure probe is located inside the intelligent regulating box. The resistance of the public flue can be indirectly reflected by detecting the pressure change of the static pressure box. In addition, the static pressure box is closer to the fan motor than the public flue, which helps to reduce the motor reaction delay; the temperature control system can use the residual heat of the motor to further increase the internal energy of the oil fume and further increase the static pressure. In addition, it can reduce the accumulation of grease inside the static pressure box; in addition, the static pressure box is equipped with a heating device to avoid the situation where the temperature demand is too large and the residual heat is insufficiently utilized;

[0023] The beneficial effects of the present invention are: (1) converting excessive gas kinetic energy into static pressure potential energy, thereby improving the smoke exhaust effect and reducing working noise; (2) utilizing the waste heat of the motor to further improve the internal energy while preventing grease from accumulating inside; (3) the selected intelligent regulating box matches the intelligent lifting system, which can adjust the volume of the regulating box through electromagnetic effect; (4) the selected system adjusts the motor speed by monitoring the pressure changes in the regulating box, which is closer to the motor, has lower delay, and is less affected by the external environment; (5) the present invention is provided with an oil return device to reduce grease accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram.

[0025] Figure 2 It is a schematic diagram of the integrated stove fan structure.

[0026] Figure 3 It is a schematic diagram of the overall cross-sectional view of the present invention.

[0027] Figure 4 It is a schematic diagram of the intelligent regulating box of the present invention.

[0028] Figure 5 It is a schematic diagram of the oil return system.

[0029] Figure 6 It is a cross-sectional view of the lifting system. DETAILED DESCRIPTION

[0030] The present application is further described below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific implementation cases described herein are only used to explain the present invention rather than to limit the invention. It should also be noted that for ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0031] It should be noted that, in the absence of conflict, the features in the implementation cases and embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] Reference Figure 1 to Figure 6 , a high-efficiency smoke exhaust fan system for an integrated stove, the high-efficiency smoke exhaust fan system comprising a fan box, a fan and an intelligent adjustment box arranged in an air inlet passage of the integrated stove; the fan box is located at the back of the integrated stove, the fan is located in the fan box and is wrapped by the fan box;

[0033] The fan includes a volute 21, a motor 22, an impeller 23 and an air outlet pipe 24. The motor 22 and the impeller 23 are located in the volute 21. The volute 21 is specifically connected to the intelligent adjustment box. The motor 22 is a variable frequency motor with an adjustable speed. The air outlet pipe 24 is a circular air outlet pipe, one end of which is connected to the intelligent adjustment box 3.

[0034] The intelligent regulating box 3 is a rectangular box, one end of which is connected to the volute 21, and the other end is connected to the air outlet duct 24; the intelligent regulating box 3 is located at the bottom of the fan box and is connected to the bottom plate of the fan box; the intelligent regulating box is equipped with a lifting system 4, a temperature control system 5, a test system 6 and an oil return system 7; the lifting system 4 is located at the bottom of the intelligent regulating box: the lifting system 4 includes a controller 41, an electromagnet 42, an adjustment spring 43 and a moving iron block 44, the controller 41 and the electromagnet 42 are located at the bottom of the intelligent regulating box 3, the controller 3 is a rectangular box structure, the controller 3 is connected to the electromagnet 42 and controls The direction of the current on the control electromagnet; the moving magnets are evenly distributed at the four bottom corners of the intelligent adjustment box 3 and fixed on the bottom surface of the intelligent adjustment box; the plurality of adjustment springs are located on the moving magnetic block, and the other end thereof is connected to the moving iron block; the lower surface of the moving iron block is a smooth rectangle, and a table-like structure is inscribed in the upper half, and the table-like structure is concavely placed, the upper plane is rectangular, and the lower surface is circular, and the area of ​​the rectangular surface is much larger than the area of ​​the circular surface; the side of the oil return system 7 is the oil return surface 72 of the device, and the circular lower surface is specifically the oil return system inlet 73, the lower end of the inlet 73 is connected to the telescopic oil storage cup, and the inlet 73 can move up and down with the moving iron block 44;

[0035] The temperature control system 5 is located on the side wall of the intelligent regulating box, and the temperature control system 5 includes a waste heat utilization module 51 and an electric heat generation module 52; the waste heat utilization module 51 is connected to the fan motor through a heat transfer pipe 53; the heat transfer pipe 53 is a circular pipe, and a heat transfer medium flows inside it. The test system 6 is also located on the side wall of the intelligent regulating box, and is specifically composed of a plurality of pressure sensors, which can detect the pressure value in the box in real time;

[0036] The oil return system 7 is located at the upper end of the lifting device 4, and includes an oil return hole 71, an oil return surface 72 and an oil return tank 73. The oil return hole is a circular oil hole, and the oil return surface is an inclined plane, the bottom of which converges with the circular oil hole; the oil return tank 73 is a cylindrical structure, the middle of which is a telescopic part, and the oil return tank 73 can be adjusted up and down with the moving iron block 44;

[0037] The intelligent regulating box is located at the bottom of the fan and includes a temperature control component, a pressure detection component and a pressure regulating component; the pressure detection component senses the pressure change of the static pressure box through the pressure sensor located on its side wall and changes the speed of the variable frequency motor accordingly. Different from the traditional public flue pressure detection, the distance between the sensor and the motor is closer, and the pressure in the monitoring regulating box is higher than the public flue test accuracy; the pressure regulating component consists of a thermal module and a lifting module, and the regulation is based on the Bernoulli equation:

[0038]

[0039] Among them, P1 is the pressure before entering the regulating box, P2 is the pressure inside the regulating box, ρ represents the density, v1 represents the fluid movement speed before entering the regulating box, v2 represents the fluid movement speed inside the regulating box, g represents the gravitational acceleration, h1 represents the height before entering the regulating box, and h2 represents the height inside the regulating box.

[0040] According to the Bernoulli equation, the water heads at both positions are equal, and the oil fume enters the large-space intelligent regulating box, the speed decreases, and the pressure increases, so that the static pressure of the integrated stove exhaust increases; while meeting the required air volume for work, the static pressure is increased, which is helpful for exhaust and noise reduction; specifically, the volume of the regulating box is adjusted to change the degree of pressure change in the regulating box. The lifting system is precisely controlled by electromagnetic control, and the control equation is obtained by calculating the balance of gravity, elastic force, and electromagnetic force. The magnitude and direction of the electromagnet current are changed by the controller to control the lifting of the moving iron block; the working principle is:

[0041]

[0042] Among them, M is mass, g is gravitational acceleration, K is Hooke's law stiffness coefficient; S is the stretching length, N is the number of coil turns, I is the current, Q is the charge number, and L is the distance between the electromagnetics.

[0043] The heating module converts thermal energy into the internal energy of the flowing gas, which improves the smoke exhaust effect. In addition, the heating module can prevent oil droplets from accumulating in the regulating box. When the heating module is running, the waste heat storage module is the main one, and the electric heat self-production module is only started when the static pressure is seriously insufficient.

[0044] The oil return surface specifically has an inclination angle of 5-8°, which helps to allow the droplets accumulated on the surface of the return surface to flow into the oil storage tank.

Claims

1. A high-efficiency smoke exhaust fan system for an integrated stove, characterized in that: The high-efficiency smoke exhaust fan system includes a fan box, a fan and an intelligent adjustment box arranged in the air intake channel of the integrated stove; the fan box is located at the back of the integrated stove, and the fan is located in the fan box and wrapped by the fan box; The fan comprises a volute, a motor, an impeller and an air outlet pipe, wherein the motor and the impeller are located in the volute, the volute is connected to an intelligent regulating box, and the motor is a variable frequency motor with an adjustable speed; The air outlet pipe is a circular air outlet pipe, and one end of the air outlet pipe is connected to the intelligent adjustment box; The intelligent regulating box is a rectangular box, one end of which is connected to the volute, and the other end is connected to the air outlet pipe; the intelligent regulating box is located at the bottom of the fan box and is connected to the bottom plate of the fan box; a lifting system, a temperature control system, a test system and an oil return system are arranged inside the intelligent regulating box; the lifting system is located at the bottom of the intelligent regulating box, and the lifting system includes a controller, an electromagnet, an adjustment spring and a moving iron block. The controller and the electromagnet are located at the bottom of the intelligent regulating box, and the controller is a rectangular boxed structure, which is connected to the electromagnet and controls the current direction of the electromagnet; The electromagnets are evenly distributed at the four bottom corners of the intelligent regulating box and fixed on the bottom surface of the intelligent regulating box; the regulating spring is located on the electromagnet, and the other end thereof is connected to the moving iron block; the lower surface of the moving iron block is a smooth rectangle, and a table-like structure is inscribed in the upper half of the moving iron block, and the table-like structure is placed concavely, the upper plane is a rectangle, and the lower surface is a circle, and the area of ​​the rectangular surface is larger than the area of ​​the circular surface; the side of the oil return system is the oil return surface, and the circular lower surface is the inlet of the oil return system, and the lower end of the inlet is connected to the telescopic oil storage cup, and the telescopic oil storage cup moves up and down with the moving iron block; The temperature control system is located on the side wall of the intelligent regulating box, and includes a waste heat utilization module and an electric heat generation module. The waste heat utilization module is connected to the fan motor through a heat transfer pipe; the heat transfer pipe is a circular pipe, and a heat transfer medium flows inside it. The test system is also located on the side wall of the intelligent regulating box, and is composed of a number of pressure sensors to detect the pressure value in the box in real time; The oil return system is located at the upper end of the lifting device, and includes an oil return hole, an oil return surface, and an oil return tank. The oil return hole is a circular oil hole, and the oil return surface is an inclined plane, the bottom of which converges with the circular oil hole; the oil return tank is a cylindrical structure, the middle of which is a telescopic part, and the oil return tank is adjusted up and down with the moving iron block; The intelligent regulating box is located at the bottom of the fan and includes a temperature control component, a pressure detection component and a pressure regulating component; the pressure detection component senses the pressure change of the static pressure box through the pressure sensor located on its side wall and changes the speed of the variable frequency motor accordingly; the pressure regulating component is composed of a thermal module and a lifting module, and the lifting module changes the degree of pressure change in the regulating box by adjusting the volume of the regulating box; the temperature control system converts thermal energy into the internal energy of the flowing gas; the temperature control system is mainly based on the waste heat utilization module when running, and the electric heat generation module is only started when the static pressure is seriously insufficient; the lifting system is precisely controlled by electromagnetic control, and the control equation is obtained by calculating the balance of gravity, elastic force and electromagnetic force. The current size and current direction of the electromagnet are changed by the controller to control the lifting and lowering of the moving iron block; the working principle is: ； Among them, M is mass, g is gravitational acceleration, K is Hooke's law stiffness coefficient; S is the stretching length, N is the number of coil turns, I is the current, Q is the charge number, and L is the distance between the electromagnetics.

2. A high-efficiency smoke exhaust fan system for an integrated stove as claimed in claim 1, characterized in that: The oil return surface has an inclination angle of 5-8°, which helps to allow the droplets accumulated on the surface of the return surface to flow back into the oil storage tank.

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