Method of improving kitchen cooking environment

Abstract

A method for improving the cooking environment in a kitchen, which comprises a flat-bottom frying pan made of steel or iron material, a flat-bottomed oil fume prevention metal plate, a gas stove, a ventilation device and related devices. The method uses a simple, energy-saving and environmentally friendly effective method to solve the problem of oil fume pollution and related ventilation during cooking in the kitchen. Scheme one: a metal storage cabinet is arranged above the kitchen stove, and three glass doors are placed down to isolate the space above the gas stove panel into an independent space, and an exhaust fan is used instead of an oil fume extractor. Scheme two or three: the gas stove is placed on the position of the kitchen outer wall window sill after modification and adjustment. Since a rectangular metal sleeve is arranged on the window sill and an additional rectangular air supply channel made of transparent plastic is added to the lower end of the inwardly rotating glass window, the flowing air is transmitted downward, which improves the air suction effect by 5-10 times compared with the traditional high-power integrated stove, and the cooking efficiency is also improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a method for improving the cooking environment in a kitchen, and relates to a method for improving the cooking environment in a kitchen, which is composed of a flat frying pan made of steel or iron material, a flat oil fume prevention metal plate, a gas stove, a ventilation device and related devices used in cooperation. BACKGROUND

[0002] The traditional household kitchen gas stove is equipped with an oil fume extractor on the top or side to absorb the oil fume generated during cooking and the exhaust gas generated during combustion. The top suction type oil fume extractor sucks the oil fume and exhaust gas upward, and the operator at the edge of the cooking table will inevitably inhale a small amount of oil fume and exhaust gas. The oil collected in the oil collection box of the top suction type and side suction type oil fume extractor is only a part of the oil fume generated during cooking, and a part of the oil fume remains on the surface and inside of the oil fume extractor, and a small part of the oil fume product floats to other parts of the kitchen to form stains. After the edible oil is gasified at high temperature, substances harmful to the human body will be generated.

[0003] In order to solve the problem of oil fume pollution generated during cooking in the kitchen, so far the imported or domestic oil fume-free frying pans sold on the market have a main structure of a composite layer structure and a thickened pot bottom structure of 3-6 mm made by casting or forging method. The weight of some of the frying pans reaches or even exceeds 2000 grams. The above-mentioned structure of the pot body can meet the condition of preventing oil fume, but increases the weight of the frying pan and the production cost, which is not conducive to operation and universal application. The present inventor has applied for three patents entitled "Oil fume prevention spatula", "Oil fume prevention spatula and its application" and "Oil fume prevention cooker and its application" to the State Intellectual Property Office of China on July 6, 2007, September 28, 2008 and January 1, 2009. The invention patent of "Oil fume prevention cooker and its application" applied for a Japanese patent on December 7, 2009, and obtained a Japanese invention patent certificate on February 28, 2014. The above-mentioned patents analyze and study the problem of oil fume generated during cooking and propose an effective solution, which plays an obvious and effective role in preventing oil fume. The existing problems are: the above-mentioned oil fume prevention cooker is used in cooperation with the oil fume extractor in the kitchen, which can eliminate the oil fume and exhaust gas generated during cooking in the kitchen, but a large amount of stains will still accumulate in the oil fume extractor after the oil fume extractor is used for a period of time, which is troublesome to clean each time, especially some parts cannot be thoroughly cleaned. These harmful stains remain in the oil fume extractor for a long time. The oil fume extractor occupies a certain space in the kitchen, generates a large amount of noise and consumes a large amount of electricity when the traditional oil fume extractor is used, which needs to be solved. In addition, when the gas stove is used continuously for a long time, the support on the gas stove head becomes red and conducts heat, and the gas stove panel becomes hot and scalding, which is particularly obvious in summer. SUMMARY

[0004] The purpose of the present application is to solve the problem of oil fume pollution and related ventilation problems in kitchen cooking by using a simple, energy-saving and environmentally friendly effective method. In 2014, after using the anti-oil fume cooker for many years, it was found that there were no oil droplets in the oil collection box of the oil smoke extractor, but there were still stains in the oil smoke extractor and the kitchen. These stains are the oil that floats on the surface after cooking fatty food and is dispersed with water vapor. These stains are not only difficult to clean but also harmful to health. The first modification test moved the gas stove to near the kitchen window and set up an electric fan on the side of the gas stove. A baffle was set up below the outlet of the electric fan to limit the flow of the electric fan's wind to below 10 cm above the cooking pot. This formed a convection current above the cooking pot without affecting the combustion of the gas stove flame. The electric fan was turned on during cooking to blow the mixture of waste gas generated by the gas stove and oil fume gas generated by the cooking pot directly out of the window, stopping the use of the oil smoke extractor. This method has been used for two years.

[0005] On the basis of the first change test in 2016, the first set of kitchen cooking environment improvement scheme was developed: a flat frying pan made of steel, iron material, flat oil fume prevention metal disc, gas stove, ventilation device and related device are used in combination to form an improved kitchen cooking environment method, characterized in that a rectangular hole is drilled in the outer wall of the left side of the kitchen stove, a wall-in rectangular metal sleeve containing a rectangular metal outer frame is arranged in the rectangular hole, the rectangular metal outer frame is made of rectangular steel pipe, the wall-in rectangular metal sleeve is made of steel plate, the inner contour of the wall-in rectangular metal sleeve and the rectangular metal outer frame is flush, the outer contour of the rectangular metal outer frame is larger than the outer contour of the wall-in rectangular metal sleeve and protrudes outward, the overall compressive strength and deformation resistance of the wall-in rectangular metal sleeve are greater than the standard requirements of the original building wall, the wall-in rectangular metal sleeve containing the rectangular metal outer frame has rust and oxidation resistance, the wall-in rectangular metal sleeve and the rectangular metal outer frame are welded together, the wall-in rectangular metal sleeve containing the rectangular metal outer frame is built with tiles on the four sides and a exhaust fan is placed, a metal sliding door A is arranged on the rectangular metal outer frame carrying the exhaust fan to close the exhaust fan, the three edges of the metal sliding door A are provided with grooves to cover the rectangular metal outer frame carrying the exhaust fan, the outside of the metal sliding door A arranged on the rectangular metal outer frame is flush with the tile wall in the kitchen, a rectangular metal wind shield A is arranged outside the rectangular hole, which is fixed on the outer wall and opens downward, the rectangular metal wind shield A covers the rectangular hole drilled on the outer wall of the kitchen, only the exhaust port is left at the lower end of the rectangular metal wind shield A, the area of the lower opening of the rectangular hole fixed on the outer wall is greater than 70% of the area of the maximum rotating diameter of the fan blade, the edge of the left stove of the kitchen stove is lower than the tile wall where the metal sliding door A is arranged, an electrical outlet and switch box a are arranged below the right side of the metal sliding door A; a rectangular metal storage cabinet is arranged at the corner above the kitchen stove, which is fixed on the wall and has two sliding doors and three upward and downward rotating glass doors, the lower glass door of the rectangular metal storage cabinet above the kitchen stove is arranged, the rotating hinge Z of the downward rotating glass door is arranged at the lower end of the rectangular metal storage cabinet away from the exhaust fan, the glass door is rotated counterclockwise by 90 degrees from the horizontal state to the vertical state, and the glass door is opposite to the exhaust fan, the downward rotating glass door of the rectangular metal storage cabinet above the kitchen stove is fixed on the lower surface of the rectangular metal storage cabinet above the kitchen stove by the bolt 1 when it is rotated clockwise to the horizontal state to limit its rotation;The left side glass door A and the right side glass door B outside the two sliding doors of the rectangular metal storage cabinet above the kitchen stove are provided with two pins 3 and a pin 2 respectively to fix and limit the rotation when the glass doors are rotated upward to the vertical state. When the left side glass door A and the right side glass door B outside the two sliding doors of the rectangular metal storage cabinet above the kitchen stove are rotated downward to the vertical state, the two switch knobs on the gas stove panel are hidden under the rectangular metal storage cabinet. The rectangular metal storage cabinet above the kitchen stove and the three vertically placed glass doors isolate the space above the gas stove panel into independent spaces. Since the stove is arranged adjacent to the exhaust fan, in order to facilitate the operation during cooking, the width of the left side glass door A adjacent to the exhaust fan is smaller than that of the right side glass door B. When cooking, the downward rotating glass door opposite to the exhaust fan is rotated counterclockwise from the horizontal state under the rectangular metal storage cabinet above the kitchen stove to the vertical state, and the gap below is closed by a movable stainless steel square tube. The metal sliding door A on the rectangular metal outer frame of the exhaust fan is opened, the exhaust fan is turned on, and then the left side glass door A adjacent to the exhaust fan outside the metal sliding door A of the rectangular metal storage cabinet above the kitchen stove is opened. The pin 3 is rotated downward by 180 degrees to the vertical state. When the left side glass door A adjacent to the exhaust fan outside the two sliding doors of the rectangular metal storage cabinet above the kitchen stove is rotated downward by 180 degrees to the vertical state, the lower end of the left side glass door A is adjacent to the gas stove panel.The two sliding doors of the rectangular metal storage cabinet above the kitchen stove are adjacent to the rotatable glass doors of the exhaust fan, which rotate 180 degrees downward to the vertical state, the left side of the rotatable glass door A is adjacent to the rectangular metal frame of the exhaust fan, the top end of the metal sliding door A on the rectangular metal frame of the exhaust fan is higher than the position of the metal sliding door A on the rectangular metal frame of the exhaust fan, the distance between the bottom of the rectangular metal storage cabinet above the kitchen stove and the gas stove panel is 59-69 cm, the flat bottom metal oil smoke prevention plate is placed on the gas stove burner support adjacent to the exhaust fan, the flat bottom frying pan is placed on the flat bottom metal oil smoke prevention plate, the vertical distance between the lowermost point of the rotating track of the fan blades and the horizontal plane where the top of the flat bottom frying pan is located is 120 mm, the vertical distance between the top of the flat bottom frying pan and the nearest point of the fan blade cover to the plane where the fan blade cover is located is 50 mm, and the cooking in this state reduces the diffusion range of the gas and waste gas generated during cooking; the state is tested by pulling a dry towel with a length of 75 cm, a width of 35 cm and a weight of 85 grams on the horizontal plane where the top of the frying pan is located, and under the condition of using an exhaust fan with a power of 50 watts, the distance of pulling the dry towel reaches 30 cm, which exceeds the suction effect of the above-mentioned dry towel by a few traditional high-power integrated stoves with a power of ≥280 watts and an air volume of 22 cubic meters per minute, which can reach 20 cm, and most side suction type oil smoke exhaust fans cannot reach 15 cm; in addition, in order to better perform cooking operations in different states and have the effect of preventing oil smoke, the flat bottom metal oil smoke prevention plate and the flat bottom frying pan are two separable independent components, the inner contour of the flat bottom metal oil smoke prevention plate matches the outer contour of the bottom of the flat bottom frying pan, the flat bottom metal oil smoke prevention plate is placed on the support of the gas stove burner adjacent to the exhaust fan, and the flat bottom metal oil smoke prevention plate is made of steel, iron, copper and aluminum metal materials; the three vertically placed rotating glass doors of the rectangular metal storage cabinet above the kitchen stove completely enclose the space above the gas stove panel in the corner adjacent to the exhaust fan, and the exhaust fan is turned on during cooking to suck out the mixture of waste gas generated by the gas stove and oil smoke gas generated in the frying pan, especially when cooking food in summer, the three vertically placed rotating glass doors of the rectangular metal storage cabinet above the kitchen stove effectively prevent the diffusion of high-temperature steam in the kitchen; in order to reduce the heat loss of the gas stove, 5-7 ceramic columns with outer lining metal pipes connected to the gas stove burner support are arranged at the lower end of the gas stove burner support, and the ceramic columns with outer lining metal pipes connected to the gas stove burner support effectively slow down the heat dissipation from the lower end of the gas stove burner support to the gas stove panel.

[0006] After using the energy-saving and environment-friendly cooker and its related devices for more than four years, no stains appear on each part of the kitchen, including the rectangular discharge port where the exhaust fan is placed, and only slight stains are present, which only need to be cleaned once a month.

[0007] After a large number of tests, it is found that under the same power condition, the distance of the air blown by the fan blade of the electric fan is ten times that of the air sucked by the fan blade, and the effect of air flow is very different. Through smoke tests, it is found that when the electric fan blows air, a small amount of smoke below the lowest point of the fan blade rotation is not directly blown out of the room, but is mixed into the flowing air in the opposite direction. Replace the exhaust fan with an electric fan, and set the direction of the rotating fan blade of the electric fan with a rectangular outer contour to be counterclockwise rotation. This modified electric fan is placed in the position of the exhaust fan, which is more convenient to operate.

[0008] When frying food or cooking food that is easy to produce odors in the frying pan, first open the metal sliding door on the metal frame of the exhaust fan, and open the exhaust fan to the outside. Place the frying pan on the stove with a flat bottom-shaped oil smoke prevention metal disc next to the exhaust fan, and open the rotating door of the storage cabinet next to the exhaust fan to the vertical state by rotating the pin downward. The cooking operator observes and operates outside the glass rotating door next to the exhaust fan. When cooking, select the medium speed rotation of the electric fan to achieve the expected effect. Replace the exhaust fan with an electric fan, and set the direction of the rotating fan blade of the electric fan with a rectangular outer contour to be counterclockwise rotation. This modified electric fan is placed in the position of the exhaust fan. Select the high-speed rotation of the electric fan, and in this state, frying cooking effectively prevents the spread of harmful gases and odors generated during cooking. In order to reduce the cleaning of the exhaust fan or the electric fan, remove the front and rear protective covers of the exhaust fan or the electric fan, which not only facilitates cleaning, but also improves the exhaust effect. There is a framed screen window covered with wet gauze next to the outside of the exhaust fan or the electric fan, which is convenient for cleaning at any time.

[0009] Three pieces of lightweight fabric of the same material with dimensions of 38 cm in width, 50 cm in height, and weighing 15 grams, 55 cm in width, 66 cm in height, and weighing 12 grams, and 3.5 cm in width, 66 cm in height, and weighing 0.75 grams are used. An electric fan with a power of 50 W and fan blade rotation diameter of 300 mm is placed at the above-mentioned rectangular air vent, and the medium-speed key is turned on. A wok is placed on an oil fume-proof metal plate, and the above-mentioned fabric is hung at one end above the wok opening farthest from the electric fan. The hanging fabric is immediately sucked to the nearest end of the wok opening adjacent to the electric fan and is then adsorbed to the electric fan. The above-mentioned three pieces of hanging fabric are selected under the same height and distance conditions from different brands of 280 W high-power side-suction range hoods in multiple shopping malls, and a high-speed operation is started for comparison test. The effect of adsorbing the hanging fabric is lower than that of the high-speed rotation of the electric fan, and is only equivalent to the effect of an exhaust fan with an input power of 50 W, a fan blade rotation diameter of 300 mm, and a wind volume of 14.5 cubic meters per minute. The effect will be more obvious with appropriate increase of the input power and exhaust volume of the exhaust fan. The comparison test fully proves the significant effect of the above-mentioned technical solution. Although the power of the traditional side-suction range hood is large, the design structure and installation method result in a substantial reduction in the air suction effect.

[0010] The second set of solutions for improving the kitchen cooking environment is developed after repeated comparative tests and technical analysis, and is characterized by changing the height of the kitchen outer wall window sill, placing the gas stove on the changed kitchen outer wall window sill, the height of the gas stove placed on the changed kitchen outer wall window sill being the same as the height of the traditional kitchen gas stove, the two switch knobs on the gas stove being adjacent to the edge of the inside of the kitchen window sill, changing the lower part of the original kitchen window to a structure for placing the kitchen gas stove and operating space, and placing the gas stove on the rectangular workbench inside the rectangular metal sleeve on the window sill, the distance between the surface of the gas stove and the top of the rectangular metal sleeve being 69 cm, the outdoor rectangular metal outer frame being provided and welded on the outdoor end of the rectangular metal sleeve, the outdoor rectangular metal sleeve being provided and welded inside the outdoor rectangular metal outer frame, the outdoor rectangular metal sleeve extending the depth of the rectangular metal sleeve on the window sill, the width of the indoor side of the outdoor rectangular metal sleeve being the same as the width of the indoor side of the rectangular metal sleeve on the window sill, the height of the indoor side of the outdoor rectangular metal sleeve being able to accommodate the lower exhaust fan or electric fan, the depth of the outdoor rectangular metal sleeve being able to accommodate the width of the exhaust fan, the two exhaust fans being closely arranged inside the outdoor rectangular metal sleeve, the horizontal distance between the outermost end of the indoor top of the outdoor rectangular metal sleeve and the innermost end of the indoor top of the rectangular metal sleeve on the window sill being 92 cm to 107 cm, the gas stove being placed on the ceramic tiles built on the rectangular workbench inside the rectangular metal sleeve, the two flat bottom-shaped oil fume prevention metal dishes being placed on the two gas stove head supports, and the two flat bottom-shaped oil fume prevention metal dishes being placed on the two flat bottom-shaped frying pans.The vertical distance from the top of the two flat-bottom frying pans to the nearest point of the two exhaust fan blade shrouds to the plane on which the two exhaust fan blade shrouds are located is 50mm-200mm. The interior of the rectangular metal sleeve set on the window sill is provided with two horizontally rotating metal doors B that enclose the two exhaust fans in the outdoor rectangular metal sleeve. Except that the reserved space for placing the two exhaust fans in the outdoor rectangular metal sleeve set in the outdoor rectangular metal outer frame can be communicated with the indoor and outdoor, the part from the top of the outdoor rectangular metal sleeve to the bottom end of the interior of the rectangular metal sleeve set on the window sill is enclosed by stainless steel plates when the two horizontally rotating metal doors B that enclose the two exhaust fans are closed. The interior of the end of the outdoor rectangular metal sleeve where the two exhaust fans are placed is provided with a rectangular metal outer frame containing the two exhaust fans. The interior of the rectangular metal outer frame containing the two exhaust fans is flush with the interior of the outdoor rectangular metal sleeve. There are two horizontally rotating metal doors B in the interior of the rectangular metal outer frame containing the two exhaust fans that enclose the two exhaust fans. After the two horizontally rotating metal doors B are opened, the left lower part of the rectangular metal outer frame is provided with a power socket and a switch box b. The outdoor rectangular metal sleeve is provided with a downwardly open rectangular cuboid metal windproof cover B of the two exhaust fans at the end of the air outlet of the two exhaust fans. The downwardly open rectangular cuboid metal windproof cover B of the two exhaust fans is fixed to the outer wall and only has an exhaust port at the lower end. The area of the lower opening of the downwardly open rectangular cuboid metal windproof cover B of the two exhaust fans is greater than 70% of twice the area of the maximum rotating diameter of the fan blades when rotating. The distance from the end face of the downwardly open rectangular cuboid metal windproof cover B of the two exhaust fans that is farthest from the kitchen outer wall to the kitchen outer wall surface is 40cm-55cm. The indoor rectangular metal outer frame made of rectangular steel pipes is set and welded at the indoor end of the rectangular metal sleeve set on the window sill. The upper, lower, left and right four interior side faces of the indoor rectangular metal outer frame are flush with the exterior side faces of the rectangular metal sleeve set on the window sill. The outer end face of the indoor rectangular metal outer frame is flush with the inner wall at the kitchen window sill. A rectangular steel pipe A is set and welded at the lower end of the indoor rectangular metal outer frame. The top face of the rectangular steel pipe A is flush with the upper surface of the gas stove cooktop panel. The part from the bottom of the rectangular steel pipe A to the lower end of the indoor rectangular metal outer frame is enclosed by the welded stainless steel plates. Two upwardly and downwardly rotating metal frame glass doors are set in the upper end face of the rectangular steel pipe A and the interior side face of the indoor rectangular metal outer frame. When the two upwardly and downwardly rotating metal frame glass doors are closed, the rotating hinges c of the two upwardly and downwardly rotating metal frame glass doors are set below the two upwardly and downwardly rotating metal frame glass doors.Two metal frame glass doors which can rotate up and down can completely close the space above the gas stove panel and isolate it into an independent space; a rectangular metal sleeve is arranged on the top of the window sill, and a rectangular window frame is arranged on the top of the kitchen window which is adjacent to the outer wall; in order to improve the lighting effect of the kitchen window, the top of the rectangular metal sleeve on the window sill is hollowed out and a rectangular light-transmitting top plate with tempered glass is arranged, the inner sides of the two ends of the rectangular light-transmitting top plate with tempered glass are provided with beams for supporting the tempered glass, the rectangular steel pipe used for the lower beam of the rectangular window frame on the top of the kitchen window which is adjacent to the outer wall is the same rectangular steel pipe No. 2 as the middle beam for supporting the tempered glass of the rectangular light-transmitting top plate with tempered glass at the lower end, and the outer end surface of the rectangular window frame on the top of the kitchen window which is adjacent to the outer wall is flush with the kitchen outer wall surface; a glass window which can rotate outward and upward is arranged in the rectangular window frame on the top of the kitchen window which is adjacent to the outer wall, the rotating hinge b of the glass window which can rotate outward and upward is arranged above the glass window which can rotate outward and upward, a rectangular window frame which is adjacent to the inner wall of the kitchen on the top of the kitchen window is arranged at the indoor port part of the top of the rectangular metal sleeve arranged on the window sill, the outer end of the rectangular window frame which is adjacent to the inner wall of the kitchen on the top of the kitchen window is flush with the inner wall of the kitchen, in order to improve the lighting effect of the kitchen window, the rectangular steel pipe used for the lower beam of the rectangular window frame which is adjacent to the inner wall of the kitchen on the top of the kitchen window is the same rectangular steel pipe No. 1 as the upper beam of the indoor rectangular metal frame at the lower end, a glass window which can rotate inward and upward is arranged in the rectangular window frame on the top of the kitchen window which is adjacent to the inner wall of the kitchen, the rotating hinge a of the glass window which can rotate inward and upward is arranged above the glass window which can rotate inward and upward, the width and height of the glass window which can rotate inward and upward and the glass window which can rotate outward and upward are equal; a magnetic strip frame movable screen window is arranged between the glass window which can rotate inward and upward and the glass window which can rotate outward and upward; the flat bottom oil fume prevention metal disc and the flat bottom frying pan are two separable independent components, the inner contour of the flat bottom oil fume prevention metal disc is matched with the outer contour of the bottom part of the flat bottom frying pan, the flat bottom oil fume prevention metal disc is placed on the support of the gas stove head which is adjacent to the exhaust fan in the kitchen, the flat bottom oil fume prevention metal disc is made of steel, iron, copper and aluminum metal materials; through repeated comparison tests, the exhaust fan with an input power of 50 watts is selected, the louver baffle of the exhaust fan is removed and only 4-6 support rods of the fan blade protection cover of the exhaust fan are reserved, since the resistance of the object blocking the front and rear ends of the fan blade is reduced, the air suction effect of the exhaust fan is improved by 80%; two exhaust fans with the louver baffle of the exhaust fan removed and only 4-6 support rods of the fan blade protection cover of the exhaust fan reserved are installed in the kitchen stove arranged on the window sill, two flat bottom oil fume prevention metal discs and two flat bottom frying pans are respectively placed on the supports of the two gas stove heads, and cooking can be simultaneously performed;The two metal frame glass doors capable of rotating up and down are first rotated 180 degrees downward to be perpendicular to the ground, the two horizontally rotating metal doors B inside the rectangular metal outer frame enclosing the two exhaust fans are opened, the two horizontally rotating metal doors B are respectively rotated 90 degrees to be adjacent to the left and right sides inside the rectangular metal sleeve on the windowsill, one or two exhaust fans are opened according to the need to exhaust air to the outside, the triangular wind deflector is connected to the side of the inwardly upward and downward rotating glass window, the inwardly upward and downward rotating glass window and the outwardly upward and downward rotating glass window are opened, under the action of the air suction of the exhaust fan, the outdoor air enters through the opened outwardly upward and downward rotating glass window and the inwardly upward and downward rotating glass window, is transmitted downward along the rectangular air supply channel made of transparent plastic with strip-shaped magnets, forms a wind curtain shielding the direction of the exhaust fan, the shielding effect of the wind curtain can radiate more than 50 cm downward, the rectangular air supply channel made of transparent plastic with strip-shaped magnets is connected to the lower end of the inwardly upward and downward rotating glass window and the upper end of the indoor rectangular metal outer frame; under the condition that the two exhaust fans with an opening power of 50 watts, a dry towel with a length of 75 cm, a width of 35 cm and a weight of 85 grams is tested to be sucked up at the horizontal plane where the top of the cooking pot opening is located, the effect of sucking up the towel is significantly improved, the distance of sucking up the dry towel with a weight of 85 grams is increased from 30 cm to 110 cm; in order to reduce the influence of high temperature on the exhaust fan or electric fan during cooking, the vertical distance from the nearest point of the two exhaust fan blade shrouds to the plane where the two exhaust fan blade shrouds are located to the top of the two flat-bottomed cooking pot openings is increased from 50 mm to 200 mm; one of the two metal frame glass doors capable of rotating up and down is closed by rotating 180 degrees upward, only one of the two metal frame glass doors capable of rotating up and down is opened for cooking operation, the two exhaust fans are opened to exhaust air to the outside, a wet towel soaked in water with a length of 75 cm, a width of 35 cm and a weight of 333 grams is still able to be sucked up at the horizontal plane where the top of the cooking pot opening is located, which significantly enhances the air suction effect of the exhaust fan. The rectangular metal outer frame made of rectangular steel pipes is arranged and fixed on the upper surface of the wall body where the kitchen outer wall window windowsill plane is located, and is welded, the rectangular metal sleeve on the windowsill and the two metal frame glass doors capable of rotating up and down are arranged and fixed, and the outwardly upward and downward rotating glass window and the inwardly upward and downward rotating glass window added to the upper end are combined to replace the original window of the kitchen; the rectangular metal sleeve on the windowsill is provided with a lighting lamp; when cooking food in the kitchen, the exhaust fan is opened, the two metal frame glass doors capable of rotating up and down are all closed, the mixture of waste gas generated by the gas stove combustion and oil fume gas generated in the cooking pot is sucked out, especially when cooking food in summer, the diffusion of high-temperature steam in the kitchen is effectively prevented; in order to reduce the heat loss generated by the gas stove, 5-7 ceramic columns with outer lining metal pipes connected to the gas stove burner support are arranged at the lower end of the gas stove burner support,The non-metallic porcelain column at the lower end of the inner convex metal tube connected with the gas stove head support effectively slows down the heat dissipation of the lower end of the gas stove head support to the gas stove tabletop panel.

[0011] The third set of improved kitchen cooking environment scheme is formulated by using the second set of improved kitchen cooking environment scheme in the method for improving kitchen cooking environment, and the features are that the rectangular metal sleeve on the window sill is set inside the bottom end of the rectangular workbench, the gas stove panel with two stove heads is replaced by the gas stove panel with only one stove head or an electromagnetic oven, the number of the exhaust fan, the metal frame glass door that can rotate up and down on the inner side of the indoor rectangular metal frame, the flat-bottom frying pan and the flat-bottom-shaped oil fume prevention metal disc are all reduced to one, the steel plate on the top of the small rectangular metal sleeve on the window sill where the exhaust fan is placed is set to be hollow and has heat-resistant tempered glass, and since the width of the small rectangular metal sleeve on the window sill where the exhaust fan is placed is reduced, two glass windows that can be opened horizontally are added at the indoor and outdoor positions of the space, that is, two glass windows that can be opened are added at the indoor and outdoor ends of the small rectangular metal sleeve on the window sill, and a closed steel plate with heat-resistant tempered glass is welded on the top of the glass window frame, the top surface of the closed steel plate is flush with the top surface of the small rectangular metal sleeve on the window sill; in order to further improve the lighting effect, the steel plate on the vertical side of the closed steel plate and the small rectangular metal sleeve on the window sill, that is, the vertical side between the two glass windows that can be opened horizontally at the indoor and outdoor positions of the space, is replaced by heat-resistant tempered glass; a metal frame glass door D that can rotate up and down is arranged on the inner side of the left side of the indoor rectangular metal frame; the structure of the glass window that rotates up and down outward at the outdoor end and the glass window that rotates up and down inward at the indoor end on the top of the small rectangular metal sleeve on the window sill remains unchanged; the technical features of the second set of improved kitchen cooking environment scheme in the method for improving kitchen cooking environment are the same, that is, they all have the function of the rectangular metal sleeve, the horizontal distance between the outermost end of the inner top of the outdoor rectangular metal sleeve and the innermost end of the inner top of the small rectangular metal sleeve is 92cm-107cm, the vertical distance from the lowermost point of the rotating track of the fan blades of the exhaust fan to the horizontal plane where the top of the upper opening of the flat-bottom frying pan is located is 120mm, the vertical distance from the nearest point of the top of the upper opening of the flat-bottom frying pan to the plane where the fan blade guard of the exhaust fan is located is 50mm-200mm, and the distance between the surface of the gas stove panel and the inner top of the small rectangular metal sleeve on the window sill is 69cm.Under the action of the air suction fan, the outdoor air enters the back from the outwardly rotating glass window and the inwardly rotating glass window, and is transmitted downward along the rectangular air supply channel made of transparent plastic with strip-shaped magnets, forming a wind curtain shielding the direction of the air exhaust fan. The effect of the wind curtain shielding can radiate more than 50 cm downward. The rectangular air supply channel made of transparent plastic with strip-shaped magnets is connected to the lower end of the inwardly rotating glass window and the upper end of the indoor rectangular metal frame. The lighting lamp is arranged in the small rectangular metal sleeve on the window sill. In order to reduce the heat loss generated by the gas stove, 5-7 porcelain columns lined with metal pipes are arranged at the lower end of the gas stove burner support and connected to the gas stove burner support. The porcelain columns lined with metal pipes protruding inwardly at the lower end of the non-metal material can effectively slow down the heat dissipation of the lower end of the gas stove burner support to the gas stove tabletop panel. The improved kitchen cooking environment method using the first set of improved kitchen cooking environment solutions or the second set of improved kitchen cooking environment solutions or the third set of improved kitchen cooking environment solutions in the above-mentioned improved kitchen cooking environment method is further improved. The feature is that the heat-absorbing metal sheet 1 is arranged on the outer layer of the flat bottom-shaped oil fume prevention metal disc to increase the heating area and improve the heat conduction effect.

[0012] The improved kitchen cooking environment method using the first set of improved kitchen cooking environment solutions or the second set of improved kitchen cooking environment solutions or the third set of improved kitchen cooking environment solutions in the above-mentioned improved kitchen cooking environment method is further improved. The feature is that the flat bottom-shaped oil fume prevention metal disc is replaced by a flat bottom-shaped oil fume prevention metal ring, and the inner contour of the flat bottom-shaped oil fume prevention metal ring matches the outer contour of the bottom part of the flat bottom frying pan.

[0013] The improved kitchen cooking environment method using the first set of improved kitchen cooking environment solutions or the second set of improved kitchen cooking environment solutions or the third set of improved kitchen cooking environment solutions in the above-mentioned improved kitchen cooking environment method is further improved. The feature is that the flat bottom-shaped oil fume prevention metal disc is replaced by a flat bottom-shaped oil fume prevention metal ring, and the inner contour of the flat bottom-shaped oil fume prevention metal ring matches the outer contour of the bottom part of the flat bottom frying pan. Heat-absorbing metal sheet 2 is arranged on the outer layer of the flat bottom-shaped oil fume prevention metal ring to increase the heating area and improve the heat conduction effect.

[0014] The improved kitchen cooking environment method using the steel or iron material made flat-bottom frying pan, flat-bottom shaped oil fume prevention metal disc, gas stove, ventilation and air exchange device and related devices in the first, second or third improved kitchen cooking environment method is further improved by replacing the flat-bottom shaped oil fume prevention metal disc with a spherical crown profile oil fume prevention metal ring, and replacing the flat-bottom frying pan with a spherical crown bottom profile frying pan. The inner profile of the spherical crown profile oil fume prevention metal ring matches the outer profile of the spherical crown bottom profile frying pan, and heat absorbing metal sheets 3 are evenly distributed on the outer layer of the spherical crown oil fume prevention metal ring to increase the heating area and improve the heat conduction effect.

[0015] The improved kitchen cooking environment method using the steel or iron material made flat-bottom frying pan, flat-bottom shaped oil fume prevention metal disc, gas stove, ventilation and air exchange device and related devices in the first, second or third improved kitchen cooking environment method is further improved by replacing the flat-bottom shaped oil fume prevention metal disc with a spherical crown profile oil fume prevention metal ring, and replacing the flat-bottom frying pan with a spherical crown bottom profile frying pan. The inner profile of the spherical crown profile oil fume prevention metal ring matches the outer profile of the spherical crown bottom profile frying pan, and heat absorbing metal sheets 3 are evenly distributed on the outer layer of the spherical crown oil fume prevention metal ring to increase the heating area and improve the heat conduction effect.

[0016] The improved kitchen cooking environment method using the steel or iron material made flat-bottom frying pan, flat-bottom shaped oil fume prevention metal disc, gas stove, ventilation and air exchange device and related devices in the first, second or third improved kitchen cooking environment method is further improved by removing the front protective cover of the exhaust fan and the louver behind the exhaust fan to improve the exhaust effect. The exhaust fan or electric fan has a high air suction effect, and a gauze window covered with gauze or a towel is placed on the outside of the exhaust fan adjacent to the side of the frying pan. The gauze or towel is easily removable and can be easily cleaned. The density of the gauze or towel is higher than that of the window screen, and the gauze window covered with gauze or a towel can not only reduce the pollution of the exhaust fan and make cleaning easier, but also reduce the pollution of the exhaust fan to the outdoor air environment during kitchen cooking.

[0017] The improved kitchen cooking environment method using the flat-bottomed frying pan made of steel or iron material, the flat-bottomed oil fume prevention metal disc, the gas stove, the ventilation and air exchange device and the related devices in the first set of improved kitchen cooking environment solutions, the second set of improved kitchen cooking environment solutions or the third set of improved kitchen cooking environment solutions described above is further improved, characterized in that the exhaust fan is replaced by an electric fan, the rotating direction of the electric fan with a rectangular outer contour is set to reverse rotation, and the modified electric fan is placed in the position of the exhaust fan; the protective cover in front of and behind the electric fan with reverse rotation is removed, which not only reduces the cleaning work of the exhaust fan, but also improves the exhaust effect of the exhaust fan; a framed screen window covered with gauze or a gauze cloth is placed outside the side adjacent to the frying pan of the electric fan with reverse rotation, and the gauze or gauze cloth is replaced with a screen window for easy removal and cleaning at any time. During normal cooking, the electric fan is selected to rotate at medium speed to achieve the expected effect. Selecting high-speed rotation of the electric fan improves the air suction effect of the electric fan, and in this state, frying cooking effectively prevents the diffusion of harmful gases generated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the first set of improved kitchen cooking environment solutions installing the exhaust fan in the rectangular metal sleeve in the wall,

[0019] Figure 2 is a front view of the second set of improved kitchen cooking environment solutions installing the exhaust fan in the rectangular metal sleeve on the window sill,

[0020] Figure 3 is a B-B direction sectional view of Figure 2

[0021] Figure 4 is an A-A direction sectional view of Figure 2

[0022] Figure 5 is an A-A direction sectional view of Figure 2

[0023] Figure 6 is a schematic view of the third set of improved kitchen cooking environment solutions installing the exhaust fan in the small rectangular metal sleeve on the window sill,

[0024] Figure 7 is a sectional view of the flat-bottomed frying pan cooperating with the flat-bottomed oil fume prevention metal disc,

[0025] Figure 8 is a front view of the flat-bottomed oil fume prevention metal ring,

[0026] Figure 9 ​​​is a plan view of a flat bottomed fume shield metal ring,

[0027] Figure 10 is a cross sectional view of a flat bottomed fume shield metal ring fitted to a flat bottomed frying pan with added heat absorbing metal sheet,

[0028] Figure 11 is a cross sectional view of a spherical cap shaped fume shield metal ring fitted to a spherical cap shaped pan bottom outline with added heat absorbing metal sheet,

[0029] Figure 12 is a cross sectional view of a spherical cap shaped fume shield metal ring fitted to a spherical cap shaped pan bottom outline with added heat absorbing metal sheet.

[0030] Explanation of reference numerals: 1. Rectangular metal sleeve in the wall, 2. Exhaust fan, 3. Flat bottomed anti-oil fume metal disc, 4. Flat bottomed frying pan, 5. Rectangular metal outer frame, 6. Rectangular cuboid metal anti-wind cover A, 7. Rectangular cuboid metal storage hanging cabinet, 8. Two sliding doors, 9. Latch 1, 10. Latch 2, 11. Latch 3, 12. Downward rotating glass door, 13. Left side upward and downward rotating glass door A, 14. Right side upward and downward rotating glass door B, 15. Metal sliding door A, 16. Stove top panel, 17. Gas stove burner support, 18. Porcelain column with outer lining metal pipe, 19. Movable stainless steel square tube, 20. Framed screen window covered with gauze or cloth, 21. Ceramic tile, 22. Two switch knobs, 23. Outer wall, 24. Rectangular metal sleeve on the window sill, 25. Outdoor rectangular metal sleeve, 26. Outdoor rectangular metal outer frame, 27. Rectangular metal outer frame, 28. Two horizontally rotating metal doors B, 29. Two rectangular cuboid metal anti-wind covers B of exhaust fans, 30. Indoor rectangular metal outer frame, 31. Rectangular steel tube A added and welded, 32. Two upward and downward rotating metal frame glass doors, 33. Rotating hinge c, 34. Rectangular window frame on the top of the kitchen window adjacent to the outer wall, 35. Rectangular steel tube No. 1, 36. Rectangular window frame adjacent to the inner wall of the kitchen, 37. Rectangular steel tube No. 2, 38. Inward upward and downward rotating glass window, 39. Outward upward and downward rotating glass window, 40. Power socket and switch box a, 41. Power socket and switch box b, 42. Small rectangular metal sleeve outdoors, 43. One upward and downward rotating metal frame glass door D, 44. Triangular wind deflector, 45. Illumination lamp, 46. Flat bottomed anti-oil fume metal ring, 47. Heat absorbing metal sheet 1, 48. Spherical cap profile anti-oil fume metal ring, 49. Frying pan with spherical cap profile pot bottom outer profile, 50. Spherical cap profile anti-oil fume metal housing, 51. Heat absorbing metal sheet 2, 52. Heat absorbing metal sheet 3, 53. Rectangular air supply channel made of transparent plastic with strip-shaped magnets, 54. Door and window handle a, 55. Door and window handle b, 56. Door and window handle c, 57. Electric fan, 58. Two horizontally openable glass windows, 59. Rotating hinge W, 60. Rectangular light-transmitting top panel with tempered glass, 61. Rotating hinge a, 62. Rotating hinge b, 63. Door and window handle W, 64. Beam for supporting tempered glass provided at both ends of the rectangular light-transmitting top panel with tempered glass, 65. Rectangular metal frame on the window sill, 66. Rotating hinge Z, 67. Heat absorbing metal sheet 4, 68. Frame on both sides of the indoor rectangular metal outer frame, 69. Small rectangular metal sleeve on the window sill.

[0031] The beneficial effects of the present application: the improved kitchen cooking environment method of the present application, compared with the traditional oil smokeless pot combined with the traditional oil smoke extractor, first, under the condition that the weight of the frying pan is significantly reduced, the heat efficiency of the frying pan is improved, the generation and diffusion of oil smoke is eliminated when frying food in the frying pan, cooking and cooking food in the traditional way, the diffusion of water and oil mixed gas and hot steam generated when cooking food is prevented, and the diffusion of waste gas generated when the gas stove is burning is effectively controlled; the exhaust fan or electric fan replaces the kitchen exhaust fan, and the air flow is transmitted downward by the additional rectangular air supply channel made of transparent plastic added to the lower end of the inwardly rotating glass window of the rectangular metal sleeve arranged on the windowsill, which improves the air suction effect by 5-10 times compared with the traditional high-power integrated stove. The heat efficiency of cooking food can also be improved. This not only greatly reduces the investment and power consumption of related equipment, but also significantly reduces the noise in the kitchen, purifies the environment of the kitchen, and fully utilizes the space of the kitchen; the number of existing households in China has reached 452 million, and the annual kitchen exhaust fan power consumption cost of each household is reduced by 10 yuan, the kitchen exhaust fan annual return fee is 80 yuan, the cooking oil loss is saved by 5 yuan, and the cost of cleaning the exhaust fan is saved by 25 yuan. The total annual savings of each household is 120 yuan, and the widespread application of the above-mentioned improved kitchen cooking environment method will produce significant economic benefits. DETAILED DESCRIPTION

[0032] The first improved kitchen cooking environment scheme in the above-mentioned "improved kitchen cooking environment method": a rectangular metal sleeve with an outer frame is installed in the independent space above the gas stove panel separated by the metal storage cabinet and the three vertically lowered rotating glass doors above the kitchen stove, and a exhaust fan is installed. The specific implementation scheme is determined as follows: first, the position of drilling a rectangular hole in the wall surface of the kitchen stove above the kitchen wall is determined, and the adjacent window is firmly supported and stabilized by a steel structure frame before drilling to increase the load-bearing capacity of the wall. After the rectangular hole is drilled, a rectangular metal sleeve with an outer frame is arranged in the rectangular hole, the overall compressive strength and deformation resistance of the rectangular metal sleeve are greater than the standard requirements of the original building wall, and the rectangular metal sleeve fixed in the wall has rust and oxidation resistance. The ceramic tiles are laid on the four sides of the rectangular metal sleeve with an outer frame, and a rectangular windproof metal cover with a lower opening is arranged outside the rectangular metal sleeve with an outer frame. The rectangular windproof metal cover has the functions of wind and rain prevention, and the ventilation area of the lower opening of the rectangular windproof metal cover is greater than the area of the maximum diameter of the rotating fan blades of the exhaust fan and the electric fan.

[0033] Example 1, a flat-bottom frying pan made of Q235 carbon steel with a weight of 1605 grams and an inner diameter of 32 cm at the top of the pan opening, combined with an oil fume prevention metal ring with a maximum outer diameter of 239 mm, an inner diameter of 95 mm in the center hollow part, and an average wall thickness of 2 mm, a weight of 580 grams per ring, the frying pan and the oil fume prevention metal ring are two separate independent bodies, the oil fume prevention metal ring is placed on the gas stove head support next to the exhaust fan, the frying pan is placed on the oil fume prevention metal ring, the vertical distance from the lowermost point of the exhaust fan blade rotation track to the horizontal plane where the top of the flat-bottom frying pan opening is located is 120 mm, the vertical distance from the nearest point of the top of the flat-bottom frying pan opening to the plane where the exhaust fan blade guard is located is 50 mm, the input power of the exhaust fan is 50 W, the fan blade rotation diameter is 300 mm, and the air volume is 14.5 cubic meters per minute; a metal storage cabinet is provided above the gas stove, a downward rotating door is provided below the storage cabinet, the rotating door rotates 90 degrees from the horizontal state to the vertical state, and the exhaust fan is opposite to the rotating door, two downward rotating doors are provided outside the kitchen storage cabinet sliding door. Turn on the gas stove to high fire, the gas meter shows that the gas consumption per minute is 0.0076 cubic meters, and the kitchen room temperature is 25℃; place the frying pan with a weight of 1605 grams on the gas stove head support with an oil fume prevention metal ring with a weight of 580 grams, turn on the high fire for 10 seconds, pour in 200 mL of first-grade soybean oil, heat to 150 seconds, the oil temperature rises to 200℃, put the frozen potato strips into the oil pan, continue to fry for 10 minutes, the potato strips turn golden yellow, at this time the oil temperature has risen to 170℃, and no oil fume is generated during the entire frying process; the highest temperature of the exhaust fan guard is 45℃, and the frozen potato strips are added again for frying; using the above frying pan and oil fume prevention metal ring, the amount of soybean oil added to the frying pan is reduced, 40 mL of first-grade soybean oil is added after turning on the high fire for 10 seconds, and the oil temperature rises to 200℃ after heating for 120 seconds; since 2016, the above energy-saving and environment-friendly cookware and related devices have been used continuously, the exhaust fan is cleaned once a month, and one exhaust fan has been used continuously for four years. Under the condition of meeting the kitchen frying and cooking requirements, the problem of oil fume and pollution in the kitchen is solved; increasing the input power and exhaust capacity of the exhaust fan has more significant effect.

[0034] Example 2, a flat-bottomed frying pan made of Q235 carbon steel with a weight of 1030 grams and an inner diameter of 30 cm at the top of the opening, combined with an oil fume prevention metal ring with a maximum outer diameter of 210 mm, an inner diameter of 105 mm in the center hollow part, and an average wall thickness of 1.7 mm, weighing 270 grams each, the frying pan and the oil fume prevention metal ring are two separate independent bodies, the oil fume prevention metal ring is placed on the gas stove head support next to the exhaust fan, the frying pan is placed on the oil fume prevention metal ring, the vertical distance between the top of the frying pan opening and the lowest end of the rotating fan blade is 120 mm, the horizontal distance between the top of the frying pan opening and the fan blade guard is 50 mm, the input power of the exhaust fan is 50 W, the fan blade diameter is 300 mm, and the air volume is 14.5 cubic meters per minute; a metal storage cabinet is provided above the gas stove, a downward rotating door is provided below the storage cabinet, and the rotating door is rotated 90 degrees from the horizontal state to the vertical state, opposite the exhaust fan, two downward rotating doors are provided outside the kitchen storage cabinet sliding door. Turn on the gas stove to high heat, the gas meter shows that the gas consumption per minute is 0.0076 cubic meters, and the kitchen room temperature is 25°C; place the frying pan weighing 1030 grams and the 270-gram oil fume prevention metal ring on the gas stove head support, pour in 200 mL of first-grade soybean oil after 10 seconds of high heat, stop heating at 90 seconds, the oil temperature is 170°C at this time, stop heating for 30 seconds, and the oil temperature continues to rise to 200°C; under the above conditions, only embed a Q235 carbon steel disc with the same thickness and a diameter of 105 mm in the center hollow part of the oil fume prevention metal ring with an inner diameter of 105 mm, pour in 200 mL of first-grade soybean oil after 10 seconds of high heat, stop heating at 150 seconds, the oil temperature rises to 170°C at this time, stop heating for 30 seconds, and the oil temperature continues to rise to 220°C, change the oil fume prevention metal ring to an oil fume prevention metal disc, also heat to 170°C, the time is extended by 60 seconds, the oil fume prevention metal disc and the frying pan absorb and store more heat, and the oil fume prevention effect of the oil fume prevention metal disc will be more significant.

[0035] Example 3, kitchen room temperature 25℃, using a diameter of 27cm double layer stainless steel steamer on the stove adjacent to the exhaust fan steamed buns, steamer second layer on the port and the exhaust fan rotating fan blade the lowest end of the vertical height flush, steamer and exhaust fan closest horizontal distance is 70mm, gas stove open fire 4 minutes and 30 seconds steamer water boiling, exhaust fan guard shield temperature highest point of temperature is 38℃, open fire 6 minutes to reach 55℃, continue to open fire heating 20 minutes still maintain at 55℃; steamer placed away from the exhaust fan gas stove stove, steamer second layer on the port and the exhaust fan rotating fan blade the lowest end of the vertical height flush, steamer and exhaust fan closest horizontal distance is 480mm, gas stove open fire 4 minutes and 30 seconds steamer water boiling, exhaust fan guard shield temperature highest point of temperature is 30℃, open fire 6 minutes to reach 36℃, continue to open fire heating 20 minutes still maintain at 36℃; therefore, long time on high heat cooking food, use away from the exhaust fan gas stove stove can reduce the working temperature of the exhaust fan.

[0036] Example 4, kitchen room temperature 25℃, using a weight of 1605g pot top end inner diameter of 30cm, Q235 carbon steel material made of flat bottom frying pan, flat bottom oil smoke metal ring of the inner contour and the outer contour of the frying pan bottom of the body, flat bottom oil smoke metal ring of the maximum outer diameter is 239mm, center empty part inner diameter is 95mm, the average wall thickness is 2mm flat bottom oil smoke metal ring weight 580g / each, flat bottom frying pan and flat bottom oil smoke metal ring are two can separate independent body, flat bottom oil smoke metal ring placed in the adjacent exhaust fan gas stove stove, flat bottom frying pan placed on the oil smoke metal ring, flat bottom frying pan on the top of the vertical distance from the exhaust fan fan blade rotating the lowest end is 120mm, flat bottom frying pan on the top of the horizontal nearest distance from the exhaust fan fan blade guard shield is 50mm, exhaust fan input power 50W, fan blade rotating diameter 300mm, air volume 14.5 cubic meters per minute; the gas stove open fire, gas meter shows that the consumption of gas per minute 0.0076 cubic meters; the weight of 1605g flat bottom frying pan and the weight of 580g flat bottom oil smoke metal ring placed in the adjacent exhaust fan gas stove stove, open fire 10 seconds after pouring 200ml first grade soybean oil, heated to 150 seconds oil temperature rises to 200℃, at this time the exhaust fan guard shield the highest temperature is 30℃, put 300g sweet potato chips in the oil pan, the oil temperature decreases, continue to open fire heating 4 minutes and 5 seconds, the temperature of the exhaust fan guard shield highest point of temperature is 36℃, continue to keep the fire frying, 6 minutes with the water vapor increases the temperature of the exhaust fan guard shield highest point of temperature reaches 50℃, continue to keep open fire frying 8 minutes, sweet potato chips fried into golden yellow, stop fire, at this time the oil temperature has risen to 175℃, due to the reduction of water vapor at this time the exhaust fan guard shield the highest temperature is 45℃.

[0037] The second set of the method for improving the kitchen cooking environment in the above-mentioned method for improving the kitchen cooking environment: the height of the kitchen outer wall window windowsill is changed, a rectangular metal frame made of a rectangular steel pipe is arranged and fixed on the upper surface of the wall body where the plane of the changed kitchen outer wall window windowsill is located, and a rectangular metal sleeve on the windowsill is welded and arranged, and the original window of the kitchen is replaced by the outward and upward rotating glass window and the inward and upward rotating glass window added at the upper end of the rectangular metal sleeve on the windowsill, and the gas stove is placed on the position on the changed kitchen outer wall window windowsill. Due to the use of the rectangular metal sleeve on the windowsill and the additional rectangular air supply channel or the additional air supply curtain made of transparent plastic added at the lower end of the inward and upward rotating glass window to downwardly convey flowing air, the additional rectangular air supply channel or the additional air supply curtain made of transparent plastic is equal to the width of the two pairs of upward and downward rotating metal frame glass doors, forming a wind curtain shielding effect. When the air suction effect of the exhaust fan is improved four times by using the second set of the method for improving the kitchen cooking environment, the heat efficiency of cooking food with a frying pan is not reduced, the noise is obviously reduced compared with the traditional oil smoke extractor, and the cooking environment of the kitchen is further improved.

[0038] Example 5, the second set of improved kitchen cooking environment in the above-mentioned "method for improving kitchen cooking environment": in the position of the kitchen wall window sill after the change adjustment, the gas stove support in the rectangular metal sleeve set on the window sill is used, the flat-bottomed frying pan made of Q235 carbon steel with a weight of 1605 grams, an inner diameter of 32 cm at the top of the pan opening, a maximum outer diameter of 239 mm at the bottom of the frying pan, an inner diameter of 95 mm at the center vacancy, and an average wall thickness of 2 mm, the oil fume prevention metal ring with a weight of 580 grams per ring, the frying pan and the oil fume prevention metal ring are two separate independent bodies, the oil fume prevention metal ring is placed on the gas stove burner support next to the exhaust fan, the frying pan is placed on the oil fume prevention metal ring, the vertical distance from the lowermost point of the rotating track of the fan blades to the horizontal plane at the top of the flat-bottomed frying pan opening is 120 mm, the vertical distance from the nearest point of the top of the flat-bottomed frying pan opening to the plane of the fan blade guard of the exhaust fan is 50 mm, the input power of the exhaust fan is 50 W, the rotating diameter of the fan blade is 300 mm, the air volume is 14.5 cubic meters per minute, two exhaust fans with an input power of 50 W are installed in the kitchen stove set on the window sill, the two exhaust fans are arranged side by side, the baffle of the exhaust fan is removed and only 4-6 supporting rods of the fan blade guard are retained; a movable baffle is added between the two exhaust fans on the gas stove panel set in the rectangular metal sleeve on the window sill, the height of the movable baffle added between the two exhaust fans is equal to the height from the top of the gas stove panel to the inside top of the rectangular metal sleeve set on the window sill, the outer end of the movable baffle added between the two exhaust fans is flush with the indoor port of the rectangular metal sleeve set on the window sill, the movable baffle added between the two exhaust fans completely separates the two gas stove burners; the left metal frame glass door that can rotate up and down is rotated 180 degrees downward and perpendicular to the ground, the left rotating metal door in the rectangular metal outer frame of the left exhaust fan is opened, the left exhaust fan is opened to exhaust air to the outside, the inwardly rotating glass window and the outwardly rotating glass window are opened, the additional rectangular air supply channel made of transparent plastic is connected to the left side of the lower end of the inwardly rotating glass window with transparent tape, under the action of the exhaust fan sucking air, after the outdoor air enters through the opened outwardly rotating glass window and the inwardly rotating glass window, it flows downward along the additional rectangular air supply channel made of transparent plastic added at the lower end of the right or left side of the inwardly rotating glass window, forming a wind curtain shielding the direction of the exhaust fan, the above state tests the dry towel with a length of 75 cm, a width of 35 cm, and a weight of 85 grams at the horizontal plane at the top of the frying pan opening, the distance of the towel under the condition of opening the exhaust fan with a power of 50 watts is increased from 20 cm to 110 cm, which is equivalent to an increase of 4.5 times of suction effect; the above-mentioned state that the 350 mL water is put into the flat-bottom frying pan on the burner support of the left side of the gas stove, the gas stove on the left side of the burner is opened to high fire to boil water, and the time for boiling 350 mL water under the condition of opening the exhaust fan is approximately the same as the time for boiling 350 mL water under the condition of not opening the exhaust fan.

[0039] Example 6, the second set of improved kitchen cooking environment scheme in the above-mentioned "method for improving kitchen cooking environment": in the position of the modified and adjusted kitchen outer wall window windowsill, a gas stove support set in the rectangular metal sleeve on the windowsill is used to place a spherical cap profile oil fume prevention metal ring, the inner profile of the spherical cap profile oil fume prevention metal ring matches the outer profile of the spherical cap bottom of the wok, the wok body with the spherical cap bottom outer profile is made of steel plate with an average wall thickness of 1.15 mm, the wok mouth diameter is 30.5 mm, and the total weight of the spherical cap wok is only 1006 grams. The inner profile of the spherical cap wok body is spherical cap, and the radius is 170 mm. The upper mouth diameter of the spherical cap profile oil fume prevention metal ring is 198 mm, the lower mouth diameter is 113 mm, the average wall thickness is 4.2 mm, and the weight of the spherical cap profile oil fume prevention metal ring is 658 grams per piece. The kitchen room temperature is 25℃, the gas stove is turned on to large fire, and the gas meter shows that the gas consumption per minute is 0.0076 cubic meters. The wok with a spherical cap bottom outer profile weighing 1006 grams and the spherical cap profile oil fume prevention metal ring weighing 658 grams are placed on the gas stove burner support, and after 10 seconds of large fire, 200 mL of first-grade soybean oil is poured into the wok, and the oil temperature rises to 150℃ after 150 seconds of continuous heating, and the oil temperature rises to 200℃ after 200 seconds of continuous heating. No oil fume is generated. Put 300 grams of frozen potato strips into the oil pot, continue to fry for 9 minutes and 30 seconds, and the potato strips turn golden yellow. At this time, the oil temperature in the pot has risen to 150℃, and no oil fume is generated during the entire frying process. The highest temperature of the exhaust fan protective cover is 45℃, and the frozen potato strips are continuously fried. Using the above-mentioned spherical cap wok and spherical cap profile oil fume prevention metal ring, the amount of soybean oil added to the wok is reduced, 40 mL of first-grade soybean oil is added to the wok after 10 seconds of large fire, the oil temperature in the wok is 100℃ after 60 seconds of heating, the oil temperature in the wok is 140℃ after 90 seconds of heating, and the oil temperature in the wok rises to 210℃ after 130 seconds of continuous heating. No oil fume is generated. According to the habits and needs of each family, select the appropriate weight and size of the wok, and select the metal ring that matches it for use to completely meet the requirement of no oil fume generation during normal cooking at home. Since the rectangular metal sleeve set on the windowsill and the additional rectangular air supply channel or air supply curtain made of transparent plastic added to the lower end of the inwardly rotating glass window are used to replace the kitchen exhaust hood with an exhaust fan or an electric fan, the kitchen frying and cooking oil fume pollution and related ventilation problems are solved in a simple and effective way.

[0040] The three sets of kitchen cooking environment improvement schemes in the above-mentioned method for improving kitchen cooking environment, under the condition of replacing the kitchen range hood with an exhaust fan or an electric fan, and taking the kitchen window inner wall size of 92.5 cm wide and 152.5 cm high, with three pieces of glass, and two pieces of glass window with openable in the lower part as an example: the first set of scheme and the third set of scheme have no effect on the light area of the kitchen window glass, and the second set of scheme reduces the light area of the kitchen window glass by 23%; the first set of scheme has the same air exchange effect as a few traditional high-power integrated stoves with power ≥280 W and air volume of 22 cubic meters per minute; the second set of scheme and the third set of scheme improve the air exchange effect of the kitchen by 5-10 times compared with the air suction effect of a few high-power integrated stoves, which has a significant effect on the improvement of the kitchen cooking environment.

Claims

1. A method for improving the kitchen cooking environment, characterized in that... The kitchen stove left side outer wall wall (23) is drilled with a rectangular hole, and a wall rectangular metal sleeve (1) containing a rectangular metal outer frame (5) is arranged in the rectangular hole. The rectangular metal outer frame (5) is made of rectangular steel pipe, and the wall rectangular metal sleeve (1) is made of steel plate. The inner contour of the wall rectangular metal sleeve (1) is flush with the rectangular metal outer frame (5), and the outer contour of the rectangular metal outer frame (5) is larger than the outer contour of the wall rectangular metal sleeve (1) and protrudes outward. The overall compressive strength and deformation resistance of the wall rectangular metal sleeve (1) containing the rectangular metal outer frame (5) are greater than the standard requirements of the original building wall. The wall rectangular metal sleeve (1) containing the rectangular metal outer frame (5) has rust and oxidation resistance, and the wall rectangular metal sleeve (1) and the rectangular metal outer frame (5) are welded together. After the four walls of the wall rectangular metal sleeve (1) containing the rectangular metal outer frame (5) are tiled with tiles (21), an exhaust fan (2) is arranged. A metal sliding door A (15) is arranged on the rectangular metal outer frame (5) supporting the exhaust fan (2) to close the exhaust fan (2). The three edges of the metal sliding door A (15) are provided with grooves to cover the rectangular metal outer frame (5) supporting the exhaust fan (2). The outer side of the metal sliding door A (15) arranged on the rectangular metal outer frame (5) is flush with the tile wall in the kitchen. A cuboid metal wind shield A (6) fixed on the outer wall wall (23) is arranged outside the rectangular hole and opens downward. The cuboid metal wind shield A (6) fixed on the outer wall wall (23) and opening downward covers the rectangular hole drilled on the kitchen outer wall wall (23). Only the exhaust port is left at the lower end of the cuboid metal wind shield A (6). The area of the cuboid metal wind shield A (6) fixed on the outer wall wall (23) and opening downward outside the rectangular hole is greater than 70% of the area of the maximum rotating diameter of the fan blade when the exhaust fan (2) rotates. The edge of the left stove of the kitchen stove is lower than the tile wall where the metal sliding door A (15) is arranged, and an electrical outlet and switch box a (40) is arranged below and to the right of the metal sliding door A (15).In the kitchen stove directly above the corner of the wall, there is a fixed wall with two sliding doors (8) and three up and down rotating glass doors rectangular metal storage cabinet (7), directly above the kitchen stove rectangular metal storage cabinet (7) below the setting of a downward rotating glass door (12), the rotating hinge Z (66) of the downward rotating glass door (12) is set at the lower end of the rectangular metal storage cabinet (7) away from the exhaust fan (2) side, the glass door is rotated 90 degrees counterclockwise from the horizontal state to the vertical state, and the exhaust fan (2) is opposite to the exhaust fan (2); The downward rotating glass door (12) below the rectangular metal storage cabinet (7) directly above the kitchen stove is rotated clockwise to the horizontal state and fixed to the lower surface of the rectangular metal storage cabinet (7) directly above the kitchen stove by the bolt 1 (9) to limit its rotation; The left side of the glass door A (13) and the right side of the glass door B (14) are set outside the two sliding doors (8) of the rectangular metal storage cabinet (7) directly above the kitchen stove, and the left side of the glass door A (13) and the right side of the glass door B (14) are set outside the two sliding doors (8) of the rectangular metal storage cabinet (7) directly above the kitchen stove. When the glass door A (13) and the glass door B (14) are rotated to the vertical state, two bolts 3 (11) and a bolt 2 (10) are used to fix and limit the rotation, respectively. When the left side of the glass door A (13) and the right side of the glass door B (14) are set outside the two sliding doors (8) of the rectangular metal storage cabinet (7) directly above the kitchen stove, the two switch knobs (22) on the gas stove panel (16) are shielded below the rectangular metal storage cabinet (7) directly above the kitchen stove. The rectangular metal storage cabinet (7) directly above the kitchen stove and the three up and down rotating glass doors vertically down separate the space above the gas stove panel (16) into independent space; Because the stove is arranged adjacent to the exhaust fan (2), in order to facilitate the operation during cooking, the width of the left side of the glass door A (13) adjacent to the exhaust fan (2) is less than the width of the right side of the glass door B (14) among the left side of the glass door A (13) and the right side of the glass door B (14) set outside the two sliding doors (8) of the rectangular metal storage cabinet (7) directly above the kitchen stove.In the frying, the downward rotating glass door (12) opposite to the exhaust fan (2) is rotated from the horizontal state to the vertical state under the rectangular cuboid metal storage cabinet (7) above the kitchen stove, and the gap below is closed by the movable stainless steel square tube (19). The metal sliding door A (15) on the rectangular metal frame (5) of the exhaust fan (2) is opened, the exhaust fan (2) is turned on, and then the metal sliding door A (15) of the rectangular cuboid metal storage cabinet (7) above the kitchen stove is opened. The glass door A (13) adjacent to the left side of the exhaust fan (2) can be rotated up and down, the bolt 3 (11) is rotated 180 degrees downward to the vertical state, and the two sliding doors (8) of the rectangular cuboid metal storage cabinet (7) above the kitchen stove are rotated 180 degrees downward to the vertical state. The lower end of the left side of the glass door A (13) is adjacent to the gas stove panel (16). When the two sliding doors (8) of the rectangular cuboid metal storage cabinet (7) above the kitchen stove are rotated 180 degrees downward to the vertical state, the left side of the glass door A (13) is adjacent to the metal sliding door A (15) on the rectangular metal frame (5) of the exhaust fan (2). The lower end of the above-mentioned rectangular cuboid metal storage cabinet (7) above the kitchen stove is higher than the position of the top end of the metal sliding door A (15) on the rectangular metal frame (5) of the exhaust fan (2). The distance between the bottom of the above-mentioned rectangular cuboid metal storage cabinet (7) above the kitchen stove and the gas stove panel (16) is 59-69 cm. The flat oil fume prevention metal plate (3) is placed on the gas stove support (17) adjacent to the exhaust fan (2). The flat frying pan (4) is placed on the flat oil fume prevention metal plate (3). The vertical distance between the lowermost point of the rotating track of the fan blade of the exhaust fan (2) and the top of the opening of the flat frying pan (4) is 120 mm. The vertical distance between the nearest point of the fan blade cover of the exhaust fan (2) and the plane where the fan blade cover is located is 50 mm. In this state, the range of gas and waste gas diffusion during cooking is reduced. In the above-mentioned state, a dry towel with a length of 75 cm, a width of 35 cm and a weight of 85 grams is tested on the horizontal plane where the top of the frying pan is located. Under the condition of using an exhaust fan (2) with a power of 50 watts, the distance of sucking the above-mentioned dry towel reaches 30 cm, which exceeds the suction effect of the above-mentioned dry towel of a few traditional high-power integrated stoves with a power of ≥280 watts and a wind volume of 22 cubic meters per minute, which is 20 cm. The distance of the above-mentioned dry towel sucked by most side suction type oil smoke exhaust fans does not reach 15 cm.In addition, in order to better cook in different conditions and have the effect of preventing oil fume, the flat bottom metal plate (3) and the flat bottom frying pan (4) are two separate parts, the inner contour of the flat bottom metal plate (3) matches the outer contour of the bottom part of the flat bottom frying pan (4), the flat bottom metal plate (3) is placed on the support (17) of the gas stove head next to the kitchen exhaust fan (2), the flat bottom metal plate (3) is made of steel, iron, copper and aluminum metal materials; the three vertically placed rotating glass doors of the rectangular metal storage cabinet (7) above the kitchen stove completely enclose the space above the gas stove panel in the corner of the wall next to the exhaust fan (2), and the exhaust fan (2) is opened during cooking to suck out the mixture of waste gas and oil fume gas generated by the gas stove and frying pan, especially when cooking in summer, the three vertically placed rotating glass doors of the rectangular metal storage cabinet (7) above the kitchen stove effectively prevent the spread of high temperature steam in the kitchen; in order to reduce the heat loss of the gas stove, 5-7 porcelain columns (18) connected with the gas stove head support (17) are arranged at the lower end of the gas stove head support (17), the inner protruding porcelain columns at the lower end of the non-metallic material effectively slow down the heat dissipation of the lower end of the gas stove head support (17) to the gas stove panel (16).

2. The method for improving the kitchen cooking environment according to claim 1, characterized in that it involves modifications. The height of the kitchen outer wall window windowsill is adjusted, the gas stove is placed on the position of the kitchen outer wall window windowsill after the adjustment, the height of the gas stove cooktop panel (16) placed on the kitchen outer wall window windowsill after the height adjustment is the same as that of the traditional kitchen gas stove cooktop panel, the two switch knobs (22) on the gas stove cooktop panel (16) are adjacent to the edge of the inner side of the kitchen windowsill, the lower end part of the original kitchen window is changed into the structure of the position and operation space for placing the kitchen gas stove cooktop; after the horizontal plane height of the kitchen outer wall window windowsill is adjusted, the rectangular metal frame (65) made of rectangular steel pipes is horizontally arranged and fixed on the upper surface of the wall of the kitchen outer wall window windowsill, the rectangular metal sleeve (24) is welded and arranged on the upper surface of the rectangular metal frame (65), the outer walls of the two sides of the rectangular metal sleeve (24) are arranged to be adjacent to the walls on the left and right sides of the kitchen windowsill, the width of the rectangular metal sleeve (24) is equal to the width of the inner wall of the kitchen window windowsill, the bottom surface inside the rectangular metal sleeve (24) is a rectangular workbench, the depth of the rectangular metal sleeve (24) is equal to the width of the workbench for placing the gas stove panel of the traditional kitchen, the gas stove is placed on the rectangular workbench at the bottom end inside the rectangular metal sleeve (24), the distance between the surface of the gas stove cooktop panel placed on the rectangular workbench at the bottom end inside the rectangular metal sleeve (24) and the top end inside the rectangular metal sleeve is 69 cm, the outdoor rectangular metal outer frame (26) is arranged and welded on the outdoor end of the rectangular metal sleeve (24), the outdoor rectangular metal sleeve (25) is arranged and welded inside the outdoor rectangular metal outer frame (26), the outdoor rectangular metal sleeve (25) extends the depth of the rectangular metal sleeve (24), the width of the indoor side of the outdoor rectangular metal sleeve (25) is the same as that of the indoor side of the rectangular metal sleeve (24), the height of the indoor side of the outdoor rectangular metal sleeve (25) can place the lower exhaust fan or electric fan, the depth of the outdoor rectangular metal sleeve (25) can meet the width distance of the exhaust fan, the two exhaust fans (2) are closely arranged side by side inside the outdoor rectangular metal sleeve (25), the horizontal distance between the outermost end of the indoor side top of the outdoor rectangular metal sleeve (25) and the innermost end of the indoor side top of the rectangular metal sleeve (24) is 92 cm to 107 cm, the gas stove is placed on the tiles built on the rectangular workbench at the bottom end inside the rectangular metal sleeve (24), the two flat oil fume prevention metal discs (3) are placed on the two gas stove head supports (17), the two flat frying pans (4) are placed on the two flat oil fume prevention metal discs (3), the vertical distance between the lowermost point of the fan blade rotation track of the two exhaust fans (2) and the horizontal plane where the top of the upper opening of the two flat frying pans (4) is located is 120 mm.The vertical distance from the top of the two flat-bottomed woks (4) to the nearest point of the fan blade guards of the two exhaust fans (2) to the plane where the fan blade guards of the two exhaust fans (2) are located is 50mm to 200mm. A rectangular metal sleeve (24) on the windowsill is provided with two horizontally rotating metal doors B (28) to enclose the two exhaust fans (2) in the outdoor rectangular metal sleeve (25). Except for the reserved space in the outdoor rectangular metal sleeve (25) set in the outdoor rectangular metal outer frame (26) to place the two exhaust fans (2) which can be connected between the indoor and outdoor areas, on the vertical plane where the two horizontally rotating metal doors B (28) enclosing the two exhaust fans (2) are closed, the outdoor rectangular metal sleeve (25) is located. The portion from the top down to the bottom of the rectangular metal sleeve (24) on the windowsill is enclosed by a stainless steel plate. At the end of the outdoor rectangular metal sleeve (25) where two exhaust fans (2) are placed indoors, a rectangular metal outer frame (27) containing the two exhaust fans (2) is installed. The inner side of the rectangular metal outer frame (27) containing the two exhaust fans (2) is flush with the inner side of the outdoor rectangular metal sleeve (25). Inside the rectangular metal outer frame (27) containing the two exhaust fans (2), there are two horizontally rotating metal doors B (28) that enclose the two exhaust fans (2). When the two horizontally rotating metal doors B (28) are opened, they are adjacent to the left and right sides of the rectangular metal sleeve (24) on the windowsill. On the inner wall, a power socket and switch box b (41) are provided on the lower left of the rectangular metal outer frame (27); the outdoor rectangular metal sleeve (25) is provided with a cuboid metal windproof cover B (29) for two downward-opening exhaust fans at one end of the air outlet of the two outdoor exhaust fans (2). The cuboid metal windproof cover B (29) for two downward-opening exhaust fans fixed on the outer wall has an exhaust port at the lower end. The area of ​​the lower opening of the cuboid metal windproof cover B (29) for two downward-opening exhaust fans (2) is greater than 70% of twice the area of ​​the maximum rotation diameter of the fan blades when they rotate. The cuboid metal windproof cover B (29) for two downward-opening exhaust fans (2) protrudes out of the kitchen at the end furthest from the kitchen outer wall. The distance from the exterior wall is 40cm to 55cm. An interior rectangular metal outer frame (30) made of rectangular steel pipe is installed and welded to the interior end of the rectangular metal sleeve (24) on the window sill. The four inner sides of the interior rectangular metal outer frame (30) are adjacent to the outer side of the rectangular metal sleeve (24) on the window sill. The outer end face of the interior rectangular metal outer frame (30) is flush with the interior wall at the kitchen window sill. A rectangular steel pipe A (31) is added and welded to the lower end of the interior rectangular metal outer frame (30). The top surface of the rectangular steel pipe A (31) added and welded to the lower end of the interior rectangular metal outer frame (30) is at the same height as the upper surface of the gas stove countertop panel (16) on which it is placed.A rectangular steel pipe A (31) is added and welded to the lower end of the indoor rectangular metal outer frame (30), and the lower part of the indoor rectangular metal outer frame (30) is closed by a welded stainless steel plate; two metal frame glass doors (32) that can rotate up and down are set on the upper end face of the rectangular steel pipe A (31) added and welded to the lower end of the indoor rectangular metal outer frame (30) and the inner side of the indoor rectangular metal outer frame (30). When the two metal frame glass doors (32) are closed, the rotating hinges c (33) of the two metal frame glass doors (32) are set below the two metal frame glass doors (32). (32) It can completely enclose the space above the gas stove work panel and isolate it into an independent space; a rectangular window frame (34) that runs straight to the top of the kitchen window and is adjacent to the outer wall is set at the outdoor outlet of the rectangular metal sleeve (24) on the windowsill; in order to improve the lighting effect of the kitchen window, the top of the rectangular metal sleeve (24) on the windowsill is set as a hollow and a rectangular light-transmitting top plate (60) with tempered glass is added. The inner two ends of the rectangular light-transmitting top plate (60) with tempered glass are provided with crossbeams (64) to support the tempered glass. The rectangular steel pipe used for the lower crossbeam of the rectangular window frame (34) adjacent to the outer wall at the top of the kitchen window and the middle crossbeam of the rectangular light-transmitting top plate (60) with tempered glass at its lower end support the tempered glass. The rectangular steel pipes used for the beams are the same rectangular steel pipe No. 2 (37). The outer end face of the rectangular window frame (34) at the top of the kitchen window adjacent to the outer wall is flush with the outer wall of the kitchen. A glass window (39) that can rotate outwards and up and down is installed inside the rectangular window frame (34) at the top of the kitchen window adjacent to the outer wall. The rotating hinge b (62) of the glass window (39) is set above the glass window (39). A rectangular window frame (36) that extends straight through to the top of the kitchen window adjacent to the inner wall of the kitchen is installed at the top indoor end of the rectangular metal sleeve (24) on the windowsill. The outer end of the rectangular window frame (36) at the top of the kitchen window adjacent to the inner wall of the kitchen is flush with the inner wall of the kitchen. In order to improve the ventilation of the kitchen window For lighting effects, the rectangular steel pipe used for the lower crossbeam of the rectangular window frame (36) adjacent to the inner wall of the kitchen window at the top is the same rectangular steel pipe No. 1 (35) used for the upper crossbeam of the inner rectangular metal frame (30) at the bottom of the kitchen window. A glass window (38) that can rotate inwards and up and down is installed inside the rectangular window frame adjacent to the inner wall of the kitchen window at the top. The rotating hinge a (61) of the glass window (38) that rotates inwards and up and down is set above the glass window (38). The width and height of the glass window (38) that rotates inwards and up and down and the glass window (39) that rotates outwards and up and down are equal. The flat-bottomed oil-proof metal plate (3) and the flat-bottomed frying pan (4) are two separate independent parts.The inner contour of the flat-bottomed anti-smoke metal plate (3) matches the outer contour of the bottom part of the flat-bottomed wok (4). The flat-bottomed anti-smoke metal plate (3) is placed on the bracket (17) of the gas stove head adjacent to the exhaust fan (2) in the kitchen. The flat-bottomed anti-smoke metal plate (3) is made of steel, iron, copper and aluminum metal materials. After repeated comparative tests, an exhaust fan with an input power of 50 watts was selected. The louvered baffle of the exhaust fan (2) was removed and only 4-6 support rods were left on the fan blade protective cover of the exhaust fan (2). Due to the reduction of the resistance of the objects blocking the front and rear ends of the fan blades, the air suction effect of the exhaust fan was improved by 80%. Two louvered baffles of the exhaust fan (2) were installed in the kitchen stove set on the windowsill. The exhaust fan (2) with only 4-6 support rods in the fan blade protective cover improves the exhaust effect. Two flat-bottomed anti-oil fume metal plates (3) and two flat-bottomed woks (4) are placed on the brackets (17) of the two gas stove heads respectively, so that cooking can be carried out at the same time. When cooking, first rotate the two metal frame glass doors (32) that can rotate up and down 180 degrees downward to be perpendicular to the ground, open the two horizontally rotating metal doors B (28) inside the rectangular metal outer frame (27) that closes the two exhaust fans (2), rotate the two horizontally rotating metal doors B (28) 90 degrees respectively to the left and right sides of the rectangular metal sleeve (24) set on the windowsill, and turn on one or two exhaust fans (2) to exhaust air to the outside as needed. The triangular wind deflector (44) is connected to the side of the inwardly rotating glass window (38). When the inwardly rotating glass window (38) and the outwardly rotating glass window (39) are opened, the outdoor air enters through the open outwardly rotating glass window (39) and the inwardly rotating glass window (38) under the action of the exhaust fan (2). It is then transmitted downward along the rectangular air supply channel (53) made of transparent plastic with strip magnets, forming an air curtain shield and moving towards the exhaust fan (2). The air curtain shielding effect can radiate downwards for a distance of more than 50cm. The rectangular air supply channel (53) made of transparent plastic with strip magnets is connected to the lower end of the inwardly rotating glass window (38) and the indoor rectangular glass window (39). The upper part of the outer frame (30); the above state was tested on the horizontal plane where the top of the wok is located to suck up a dry towel that is 75cm long, 35cm wide and weighs 85g. The test of sucking up the towel was carried out under the condition of two exhaust fans (2) with a power of 50 watts. The effect of sucking up the towel was significantly improved. The distance to suck up the 85g dry towel was increased from 20cm to 110cm. In order to reduce the impact of high temperature on the exhaust fan or electric fan during cooking, the vertical distance from the top of the two flat woks to the nearest point of the two exhaust fan blade guards to the plane where the two exhaust fan blade guards are located was increased from 50mm to 200mm. One of the two metal frame glass doors that can rotate up and down was rotated 180 degrees upward to close it.Cooking was performed by opening only one of the two metal-framed glass doors (32) that could rotate up and down. Two exhaust fans (2) were turned on to exhaust air outwards. Under these conditions, a wet towel weighing 333 grams and 75 cm long and 35 cm wide was tested on the horizontal plane where the top of the wok was located. The towel was still able to be sucked up, which significantly enhanced the suction effect of the exhaust fan (2). A rectangular metal outer frame (27) made of rectangular steel pipe was installed and fixed on the upper surface of the wall where the windowsill of the modified kitchen exterior wall was located. A rectangular metal sleeve (24) and two metal-framed glass doors (32) that could rotate up and down were installed on the windowsill. The combination of the glass windows (39) that rotate up and down outwards and the glass windows (38) that rotate up and down inwards were added to the upper part of the doors, which replaced the original windows of the kitchen. A light (45) is installed inside a rectangular metal sleeve (24) on the windowsill; when steaming food in the kitchen, the exhaust fan (2) is turned on, and both metal-framed glass doors (32) that can rotate up and down are closed, sucking out the mixture of exhaust gas generated by the gas stove and oil fumes generated in the wok, especially in summer when steaming food, effectively preventing the diffusion of high-temperature steam in the kitchen; in order to reduce the heat loss generated by the gas stove, 5 to 7 ceramic pillars (18) with outer metal tubes connected to the gas stove burner support (17) are installed at the lower end of the gas stove burner support (17). The non-metallic ceramic pillars protruding from the lower end of the outer metal tubes connected to the gas stove burner support (17) effectively slow down the heat dissipation from the lower end of the gas stove burner support (17) to the gas stove cooktop panel (16).

3. The method for improving the kitchen cooking environment according to claim 2 is characterized in that, at the modified and adjusted position of the windowsill of the kitchen exterior wall, the rectangular workbench at the bottom of the rectangular metal sleeve (24) on the windowsill, and the gas stove with two burners, are replaced with a gas stove with only one burner or an induction cooker. The number of exhaust fans (2), metal frame glass doors (32) that can rotate up and down on the inner side of the indoor rectangular metal outer frame (30), flat-bottomed wok (4), and flat-bottomed oil-proof metal plate (3) are all reduced to one. The steel plate at the top of the small rectangular metal sleeve (69) on the windowsill where one exhaust fan (2) is placed is set with To create a perforated space and add heat-resistant tempered glass, the width of the small rectangular metal sleeve (69) on the windowsill where an exhaust fan (2) is placed is reduced. In the space created by this reduction, two horizontally opening glass windows (58) are added to the indoor and outdoor locations. Specifically, openable glass windows are added to both the indoor and outdoor ends of the small rectangular metal sleeve (69) adjacent to the windowsill. A closed steel plate with heat-resistant tempered glass is installed and welded to the top of the frame of these openable glass windows. The top surface of the closed steel plate is flush with the top surface of the small rectangular metal sleeve (69) on the windowsill. To further improve the lighting effect, the top surface of the closed steel plate is flush with the top surface of the small rectangular metal sleeve (69) on the windowsill. The vertical side of the metal sleeve (69) adjacent to the reduced space has two additional horizontally opening glass windows (58) in the middle vertical side. The steel plate of the vertical side of the small rectangular metal sleeve (69) on the windowsill is replaced with heat-resistant tempered glass. A metal frame glass door D (43) that can rotate up and down is set in the inner side of the left side of the indoor rectangular metal outer frame (30). The structure of the glass window (39) that rotates up and down outward at the top of the small rectangular metal sleeve (69) on the windowsill and the glass window (38) that rotates up and down inward at the indoor end remains unchanged. It has the same technical feature as claim 2: both have rectangular metal sleeves. Functionally, the horizontal distance between the outermost end of the inner top of the outdoor rectangular metal sleeve (25) and the innermost end of the inner top of the outdoor small rectangular metal sleeve (42) is 92cm to 107cm; the vertical distance from the lowest point of the fan blade rotation trajectory of the exhaust fan (2) to the top of the flat-bottomed wok (4) is 120mm; the vertical distance from the top of the flat-bottomed wok (4) to the nearest point of the fan blade guard of the exhaust fan (2) to the plane where the fan blade guard of the exhaust fan (2) is located is 50mm to 200mm; the distance between the surface of the gas stove countertop panel (16) and the inner top of the small rectangular metal sleeve (69) on the windowsill is 69cm.Under the action of the exhaust fan (2) drawing in air, outdoor air enters through the open outward-rotating glass window (39) and the inward-rotating glass window (38), and is then conveyed downwards along the rectangular air supply channel (53) made of transparent plastic with strip magnets, forming an air curtain shield that moves towards the exhaust fan (2). The air curtain shielding effect can radiate downwards for a distance of more than 50cm. The rectangular air supply channel (53) made of transparent plastic with strip magnets is connected to the lower end of the inward-rotating glass window (38) and the room. The upper end of the inner rectangular metal outer frame (30); a lighting lamp (45) is installed inside a small rectangular metal sleeve (69) on the windowsill. In order to reduce the heat loss generated by the gas stove, 5 to 7 ceramic pillars (18) with outer metal tubes connected to the gas stove burner support (17) are installed at the lower end of the gas stove burner support (17). The non-metallic ceramic pillars protruding from the lower end of the outer metal tubes connected to the gas stove burner support (17) can effectively slow down the heat dissipation from the lower end of the gas stove burner support (17) to the gas stove cooktop panel (16).

4. The method for improving the kitchen cooking environment according to claim 1, claim 2, or claim 3, characterized in that... The flat-bottomed, oil-proof metal plate (3) has heat-absorbing metal sheets 1 (47) evenly distributed on its outer layer to increase the heat-receiving area and improve the heat conduction effect.

5. The method for improving the kitchen cooking environment according to claim 1, claim 2, or claim 3, characterized in that: The flat-bottomed anti-oil fume metal plate (3) is replaced with a flat-bottomed anti-oil fume metal ring (46), and the inner contour of the flat-bottomed anti-oil fume metal ring (46) matches the outer contour of the bottom part of the flat-bottomed frying pan (4).

6. The method for improving the kitchen cooking environment according to claim 1, claim 2, or claim 3, characterized in that: The flat-bottomed anti-oil fume metal plate (3) is replaced with a flat-bottomed anti-oil fume metal ring (46). The inner contour of the flat-bottomed anti-oil fume metal ring (46) matches the outer contour of the bottom part of the flat-bottomed wok (4). Heat-absorbing metal sheets 2 (51) are evenly distributed on the outer layer of the flat-bottomed anti-oil fume metal ring (46) to increase the heat-receiving area and improve the heat conduction effect.

7. The method for improving the kitchen cooking environment according to claim 1, claim 2, or claim 3, characterized in that: The flat-bottomed anti-oil fume metal plate (3) is replaced with a spherical crown-shaped anti-oil fume metal ring (48), and the flat-bottomed wok (4) is replaced with a wok (49) with a spherical crown-shaped bottom outer contour. The inner contour of the spherical crown-shaped anti-oil fume metal ring (48) matches the outer contour of the bottom of the wok (49). Heat-absorbing metal sheets 3 (52) are evenly distributed on the outer layer of the spherical crown-shaped anti-oil fume metal ring (48) to increase the heat-receiving area and improve the heat conduction effect.

8. The method for improving the kitchen cooking environment according to claim 1, claim 2, or claim 3, characterized in that: The flat-bottomed anti-oil fume metal plate (3) is replaced with a spherical crown-shaped anti-oil fume metal shell (50), and the flat-bottomed wok (4) is replaced with a wok (49) with a spherical crown-shaped bottom outer contour. The inner contour of the spherical crown-shaped anti-oil fume metal shell (50) matches the outer contour of the bottom of the wok (49) with a spherical crown-shaped bottom outer contour. Heat-absorbing metal sheets 4 (67) are evenly distributed on the outer layer of the spherical crown-shaped anti-oil fume metal shell (50) to increase the heat-receiving area and improve the heat conduction effect.

9. The method for improving the kitchen cooking environment according to claim 1, claim 2, or claim 3, characterized in that: The protective cover in front of the exhaust fan (2) and the louvers behind the exhaust fan (2) are removed to improve the ventilation effect; a framed screen window (20) covered with gauze or gauze is placed on the outside of the side of the exhaust fan (2) adjacent to the wok, and the screen is replaced with gauze or gauze that is easy to remove, so that it can be cleaned at any time.

10. The method for improving the kitchen cooking environment according to claim 1, claim 2, or claim 3, characterized in that it is... The electric fan (57) replaces the exhaust fan (2). The direction of rotation of the blades of the electric fan (57), which has a rectangular outer contour, is set to reverse rotation. The modified electric fan (57) is placed in the position of the exhaust fan (2). The protective covers in front and behind the modified electric fan (57) are removed to improve the ventilation effect. A framed screen window (20) covered with gauze or gauze is placed on the outside of the side of the modified electric fan (57) adjacent to the wok. The window screen is replaced with gauze or gauze that is easy to remove and can be cleaned at any time.

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