WO2001090655A1

WO2001090655A1 - Liquid-separate-film device for sucking and exhausting the fume

Info

Publication number: WO2001090655A1
Application number: PCT/CN2001/000857
Authority: WO
Inventors: Chongguang Hong
Original assignee: Chongguang Hong
Priority date: 2000-05-22
Filing date: 2001-05-22
Publication date: 2001-11-29
Also published as: CN1325002A; AU2001273811A1; CN1111267C; CA2404789C; CA2404789A1

Abstract

A liquid-separate-film device for sucking and exhausting fume, includes a pressured liquid outlet, which is located on one side of the diffusing surface of the fume's source and parallel with the diffusion surface, and a suctional liquid inlet connected with a suction-produce device, which is located on the opposed side and also parallel with the diffusion surface. The liquid flowing from the said outlet to said inlet forms liquid-separate film which can separate the fume's source from outer air by the fume's path between the said outlet and said inlet. The invention can be applied to bi-directional separation in the industry and exhausts the fume on the fume's source. The complex civil stove using the inventive device can exhaust the air downwards, then clear the polluted fume thoroughly.

Description

TECHNICAL FIELD

The invention relates to a device for treating environmental pollution of smoke and dust, in particular to a fluid diaphragm smoke suction and exhaust device, which can be applied to industrial and domestic cooking stoves.

Background of the invention

In industrial production, some precision products with strict requirements such as microelectronics and bioengineering require high cleanliness. It is necessary to prevent the product itself from polluting the environment during the production process, and it is required to prevent the environment from contaminating the product itself with dust. Two-way isolation measures or devices are required. At present, such devices are generally solid isolation covers and sleeves, which block the sight and affect the operation. They are not suitable for the production of certain products, and a two-way isolation device for fluid diaphragms that can solve this problem. To be developed, this fluid diaphragm has a wider range of applications.

In the field of civilian cooking stoves, due to the improvement of modern housing and the increase of people's awareness of environmental protection, the problems of human environmental quality have attracted widespread attention. The study found that household pollution problems in residential units are prominent, and air pollution in modern rooms with sealed doors and windows is serious. After moving into the new unit, although the range hood was installed, it would still be four-walled soot a few days later, and there was a layer of grease on the furniture. The hostess, who often cooks in the kitchen, begins to experience a series of conditions called "drunk oil syndrome", such as loss of appetite, frequent fatigue, weight gain, and slow response. It is now known that this is caused by the inhalation of oil fume during cooking, which is caused by the gaseous acrolein monomer generated during heating. When the oil continues to heat, the acrolein monomer will polymerize into polyacryl, which is a carcinogen.

According to relevant literature reports: "In recent years, an epidemiological survey in Shanghai, Harbin, Tianjin, Shenyang and other places in China showed that the more oil fume in the kitchen during cooking, the higher the risk of lung cancer, and housewives exposed to oil fume The incidence of lung cancer is twice as low. "This is because the oil fume produced by cooking oil contains toxic substances." The chemical component of cooking oil is triacylglycerol. When the oil temperature exceeds 130 ° C, it will decompose. It produces volatile substances such as acrolein that are harmful to the human body. Take vegetable oil as an example. The concentration of acrolein produced in oil fume when heated to 270 ° C is 20 times that of 18CTC. 1,3-butadiene and The concentration of benzene is 185 ° (13. 6 and 5 times respectively. "Chinese food culture is part of traditional Chinese culture. Traditional cuisine is used to fry, fry, stir-fry, and stir-fry. In most cases, the oil temperature is higher than 150 °. C, easily cause serious pollution. It can be seen that the kitchen is the main source of indoor air pollutants in the home. The oil fume produced by heating the cooking oil in the oil pan when cooking in the kitchen contains serious pollutants that are dangerous to humans. However, it is impossible to completely change the diet culture of the Chinese and even the Chinese in the world. The existing technical devices are not ideal for solving severely polluted kitchen pollution. Therefore, there are constant calls for a kitchen revolution with Chinese characteristics. This is a The imminent issue is a major issue related to the health of Chinese and humans at home and abroad.

The problem with the prior art device is that the oil fume space circulation distance is too long, and the oil fume spreads within the oil fume space circulation distance, causing oil fume pollution. We call the distance from the plane of the range hood's air intake to the level of the pollution source (such as the level of the wok pan mouth) as the "fume space circulation distance D". Existing domestic and foreign range hood products, regardless of the model, are mostly exhausted As long as the range hood is up-exhaust, the range hood is suspended above or above the head of the cook. Due to the requirements of the height of the human body, sight, and cooking operations, the distance of the fume space circulation needs to be at least D = 70-120cm. In the space of one meter of oil fume space, the oil fume is absolutely impossible to propagate in a straight line and spread everywhere. It is inevitable that the indoor air convection, the influence of the air flow on the sides of doors and windows, and the interference of the movement of the back of the hand will cause turbulence and spread in all directions As there is no obstruction in front of the cook, the cook has to face the diffused smoke stream, the billowing oil fume will pass in front of the cook's face, and a large amount of harmful substances will be sucked into the body by the cook.

Due to the limitation of traditional range hood design ideas, the existing range hood D range is large. In order to reduce the value of D, the range hood installation position must be lowered. The lower the lower, the better, but too low. Not only does it block the line of sight, but it also affects the operation of reaching out for cooking. This contradiction is that the existing range hoods cannot be overcome. In order to solve the problem of low detoxification efficiency of traditional range hoods, many manufacturers have designed various improved machines. Types are classified according to the technical measures adopted. Generally, the improved models of range hoods can be divided into four categories: strong suction type, exhaust cabinet type, deep suction type, and side suction type.

Strong suction range hood

The strong suction type is considered from the perspective of increasing the power of the motor, improving the design of the fan, and increasing the amount of exhaust air. By relying on increasing the exhaust capacity, the problem of low detoxification efficiency is solved. However, this improvement is limited. Pressure, it may not only inhale dust into the room to reduce cleanliness, but also cause energy loss. Excessive exhaust air volume in summer will cause indoor heat loss. Excessive air exhaust volume in winter will cause indoor heat loss and waste of energy. It's quite D-80-120cm, but it can't solve the key problem of long fume circulation distance. 2. Exhaust cabinet type range hood '

Exhaust cabinet type is the range hood and cooker installed in the same exhaust cabinet. Except for the operation surface, the other three sides of this exhaust cabinet are equipped with glass-metal wall frames, which can reduce the spread of oil fume on three sides, but only if the cooker cannot install any cover in front of the cooker, the cooker still has to face the billowing oil fume, pollution It still exists. In addition, it occupies a large effective space and restricts operation. The critical oil fume circulation distance D has not been reduced, and it cannot fundamentally solve the kitchen pollution.

3. Deep suction range hood

The deep suction type rotates the conventional range hood down about 90 degrees. Corner, and add a baffle or hood on the lower periphery to guide the flow. Such a deep-exhaust range hood can reduce the hood flow distance by half compared to traditional range hoods. This is a significant improvement and can reduce the range of fumes. It spreads, but the distance between the oil fume under the hood is still D = 50-70cm, and it still cannot completely solve the kitchen pollution.

4. Side suction range hood.

Side suction range hood is a traditional range hood equipped with a wall-mounted suction box, the suction box has a row of suction holes, which is equivalent to a part of the suction port from horizontal to vertical direction, so that the upper and lower fume The circulation distances are different, so that the equivalent average value reaches D = 30-40cm, which is a great improvement, but still has not been able to completely solve the kitchen pollution, especially between the cook and the source of pollution. The cook is isolated from the source of the pollution.

Existing range hoods are not able to completely solve the kitchen pollution. In essence, they are limited by the design of the exhaust air on traditional range hoods. From the cooking pan to the range hood, there must be a field of view and operating distance of at least half a person. , Resulting in the need for a fume space circulation distance D = 80-120cm. Because there will inevitably be fume diffusion within this distance, various improvements of existing products have failed to fundamentally solve the problem, and the existing range hood products failed. To achieve the standard of hygiene in the kitchen, cooks still have to face the smoke.

Therefore, it is necessary to improve, perfect and add new varieties of existing technologies.

The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a fluid diaphragm suction and exhaust device.

One of the objectives is to rely on a fluid diaphragm to isolate the source of smoke and dust pollution from the environment, which can effectively prevent environmental pollution caused by the spread of harmful gases or industrial dust without affecting sight and operation.

The second purpose is to apply the kitchen range hood of the structure of the present invention, which can make the space of the oil fume space The distance is less than 1 cm. The range hood does not need to be hung above the operator, but is directly placed on the cooktop, which can realize the exhaust requirements under the range hood. This type of range hood and cooker constitute a composite exhaust range, which is expected to completely solve Environmental pollution in home kitchens. -Summary of the Invention

The object of the present invention is achieved as follows:

A fluid diaphragm suction and exhaust device for dust is provided at a source of smoke pollution, and is characterized in that a pressured fluid blowing outlet parallel to the diffusion surface is provided on a side of a diffusion surface of the smoke and dust pollution source, and the blowing outlet is connected to the pressure fluid source at a position therewith The other side of the symmetry is provided with a negative pressure fluid suction port parallel to the diffusion surface, and the suction port is connected to a negative pressure generating device; the fluid blown out from the blowout port enters the suction port to form a fluid diaphragm, and the fluid diaphragm diffuses pollution smoke and dust The space is enclosed in a soot channel from the air outlet to the air inlet.

The object of the present invention can also be achieved by the following measures:

The front end of the fluid blowing outlet is sequentially connected to a blow-out pressure equalizing box, a blow-out duct, and a pressure-out casing with a built-in fan / pump; Chassis.

The ratio of the length of the suction port to the blowing port is (5-9): (5-1); and the ratio of the suction flow rate to the blowing flow rate is (3-9): (1-3); the suction port and The air outlet is a flat and / or curved slit, and the slit width is between 1-50mm.

The fluid medium blown out from the blow-out port and sucked in from the suction port is any one of air, water, non-volatile oil, and chemical fluid medium.

The fan / pump provided in the pressing case and the fan / pump provided in the suction case may be respectively connected to the drive shafts of two separate motors, or may be respectively connected to the drive shafts protruding from both ends of the same motor.

A composite smoke exhaust cooker equipped with a fluid diaphragm smoke extraction and exhaust device according to claim 1, the cooker is provided with a casing, a gas source, and a burner, and an electrical appliance and a storage cabinet can be arranged in the casing, characterized in that: : The fluid is air, the air outlet is a blower, the air inlet is an air inlet, the air pressure equalizing box is disposed at the upper part of the casing, the air suction duct is disposed at the middle of the casing, and the air intake casing is disposed at the lower portion of the casing. To form the lower exhaust air, an oil fume separator is provided between the suction equalizing box and the suction duct, and a shutter is provided on the back of the casing. The suction duct is provided with a linkage controllable valve and is connected with a scent-producing stove. The structure of the oil fume separator may be: a non-woven fabric layer built into the frame, a non-woven fabric with rolls that can be rolled, and an oil collecting tank with a discharge port, and a renewable filtering and absorbing material such as molecular sieve and activated carbon in the frame. , Electrostatic ionization dust collector, surfactant separator.

An air suction cover and / or a cantilevered air suction cover are provided on the upper part of the cabinet above the cooker; the air suction cover has a sandwich structure, and an air inlet is provided on an inner plane of the air cover, and the air suction cover has A trumpet-shaped downward suction port is connected to the duct through an elbow, and the lower part of the suction cover and the lower part of the duct of the suction cover communicate with the suction pressure equalizing box in the casing, respectively.

A blower cover is provided on the upper part of the cabinet. The cover is a sandwich structure. The bottom edge is connected to a blower case provided with a blower fan inside the cabinet. Slot air inlets on the top surface of the shell surrounding the front, left, and right sides of the cooker are corresponding, and the slot air inlets communicate with an air suction case provided with a suction fan.

The connection parts of the suction cover and the blower cover with the casing can be lifted and lowered, and can be raised and lowered, and the middle part of the two sides of the frame is provided with a rotating shaft to be able to rotate up and down. .

BRIEF DESCRIPTION OF THE DRAWINGS

Now, the preferred embodiment will be described with reference to the accompanying drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of FIG. 1; FIG.

3 is a schematic structural diagram of an embodiment of a composite smoke exhaust cooker using the fluid diaphragm suction and exhaust fume device of the present invention;

FIG. 4 is an A-A view of FIG. 3;

Fig. 5 is a C-C view of Fig. 3;

6 is the same as FIG. 3, which is another embodiment;

Figure 7 is a B-B view of Figure 6;

8 is a top view of FIG. 6;

9 is the same as FIG. 3 and is a top view of another embodiment;

Fig. 10 is a D-D view of Fig. 9 (position rotated 90 degrees).

Reference number-1. Source of soot pollution 101. Containers that produce pollution sources 102. Fuel pollution sources

103. Pollution Source of Cooking Pot

Fluid outlet

201. Blow-out pressure equalizing box (blowing pressure equalizing box) 202. Blow-out conduit (blowing duct) 203. Blow-out fan or pump (pressure fluid source) 204. Blow-out enclosure (blowing case) 205. Motor

Fluid inlet

301. Suction pressure equalizing box (suction pressure equalizing box) 302. Suction tube (suction pressure tube)

303. Suction fan or pump (negative pressure generating device) 304. Suction case (suction case)

305. Motor 306. Wind pressure sensor

4. Fluid diaphragm (fluid curtain)

5. Compound smoke exhaust cooker

501. Case 502. Burner

503. Electric appliances (oven, dish washer, disinfection cabinet, etc.)

504. Storage cabinet 505. Inlet shutters

506. Stove top suction 507. Pot

508. adjusting bolt 509. valve

510. Collar 51 1. Pot holder

6. Oil fume separator

601. Non-woven fabric with built-in frame 602. Non-woven fabric with rolls that can be rolled

603. Oil collecting tank 604. Turn handle

7. Suction cover

701. Oil fume intake 702. Flexible connection

703. Lighting

8. Suction hood

9. Hair cover

901. Hair dryer 902. Hair dryer

903. Suction fan 904. Flexible connection (rotatable)

905. Telescopic tube Best Mode of the Invention

Please refer to FIG. 1. The present invention is a fluid diaphragm suction and exhaust fume device, which is arranged at a source of soot pollution.

A pressure fluid outlet 2 parallel to the diffusion surface is provided on one side of the diffusion surface of the soot pollution source 1, and the pressure outlet is connected to the pressure fluid source 203. A negative pressure parallel to the diffusion surface is provided on the other side symmetrical to the position. The fluid suction port 3 is connected to the negative pressure generating device 303. The fluid blown from the blowout port 2 enters the suction port 3 to form a fluid diaphragm 4, which encloses the pollution source 1 soot and dust diffusion space from the blowout port to In the soot channel between the suction ports.

In the embodiment shown in FIG. 2, the front end of the fluid blow-out port 2 is sequentially connected to a blow-out pressure equalizing box 201, a blow-out duct 202, and a blow-out case 204 with a built-in fan / pump 203. The pressure box 301, the suction duct 302, and the suction case 304 with a fan / pump 303 inside.

• During implementation, the ratio of the length of the suction port 3 to the length of the blow-out port 2 is (5-9): (5-1); and the ratio of the suction flow rate to the blower flow rate is (3-9): (1- 3); The inlet 3 and the outlet 2 are slits with a flat surface and / or a curved surface, and the slit width is between 1-50mm.

During the implementation, the fluid medium blown out from the blowout port 2 and sucked in from the suction port 3 is any one of air, water, nonvolatile oil, and chemical fluid medium.

During the implementation, the fan / pump 203 provided in the extrusion case 204 and the suction case 203

• The fan / pump 303 in 304 can be connected to the drive shafts of two separate motors 205 and 305 respectively, or can be connected to the drive shafts that extend from both ends of the same motor (not shown in the drawings).

FIG. 3, FIG. 4, and FIG. 5 show a composite smoke exhaust cooker 5 equipped with the fluid diaphragm smoke extraction and exhaust device according to claim 1, which is provided with a casing 501, a gas source, a burner 502, and the inside of the casing. An electric appliance 503 and a storage cabinet 504 may be provided. The fluid is air, the air outlet 2 is a blower, and the air inlet 3 is an air inlet. The air pressure equalizing box 301 is provided on the upper part of the cabinet, and the air suction duct 302 is provided. In the middle of the casing, the suction casing 304 is arranged at the lower portion of the casing to constitute the lower exhaust. An oil fume separator 6 is provided between the suction equalizing box 301 and the suction duct 302. A shutter 505 is provided on the back of the casing. The suction duct 302 is provided with a linkage controllable valve 509 which is connected to a cooking stove which generates odor.

During implementation, the structure of the oil fume separator 6 may be: a non-woven fabric layer 601 built into the frame, a non-woven fabric 602 with a roll that can be rolled, and an oil collecting tank 603 with a discharge port, a molecular sieve with a built-in mesh frame, Activated carbon renewable filter adsorption material, electrostatic ionization dust collector, surface activity Agent separator. The above structures are all prior art and will not be described in detail in this specification.

In the embodiments shown in FIG. 6, FIG. 7, and FIG. 8, the upper part of the cabinet is provided with a suction cover 7 and / or a cantilever suction cover 8 above the cooker; the suction cover 7 is a sandwich structure, which has a suction port 701 on the inner plane, the suction hood 8 has a flared downward suction port, the suction port is connected to a duct through an elbow, the lower part of the suction cover 7 and the suction hood 8 The lower parts of the ducts are respectively connected to the suction equalizing boxes 301 in the casing 501.

In the embodiment shown in FIG. 9 and FIG. 10, a blower cover 9 is provided on the upper part of the casing 501. The blower cover 9 has a sandwich structure, and a bottom edge thereof is connected to a blower casing provided with a blower fan 901 disposed in the casing. The blower opening 902 provided with a slit on the periphery of the lower side of the top corresponds to the slit air inlets 506 provided on the top surface of the cabinet and surrounding the cooker's front, left, and right sides. The slit air inlets 506 communicate with a suction fan 903. Suction case.

The connection part of the suction cover 7 and the blower cover 9 with the casing can be lifted and lowered, and can be raised and lowered, and the middle part of the frame on both sides is provided with a rotating shaft to be able to rotate up and down. 904 is connected and sealed. The lifting structure of the rotating structure machine can use the existing technology, which is not described in detail in this specification.

Structural features and applications of the invention:

In order to solve the Chinese-style cooking, when water droplets explode when exposed to high temperatures, not only the oil fume but also the pollution caused by the splash of oil stars and mercury, which is also a problem that cannot be solved by traditional range hoods. It can be solved by setting the air suction cover 7. When starting to fry or put vegetables into the oil, close the air suction cover small, usually it can be opened, and it can be controlled by humans independently, which can effectively prevent the environmental pollution caused by oil star splashing. In order to meet the requirements of Chinese style cooking pan and steamer exhaust, a cantilever suction hood 8 can be installed at the corresponding position of the suction equalizing box 301 steamer. The cantilever suction hood is composed of a telescopic tube and a rotary joint, which can be up and down The suction parts moving back and forth and rotating can completely solve the kitchen oil fume pollution problem of Chinese cooking.

During implementation, the suction motor is a main motor, and the main motor may adopt a structure of a transmission shaft at two sides, such as a suction fan impeller on the right and a blower impeller on the left.

A blower motor can be configured in addition to the main motor. The blower pressure equalizing box can be simplified into a blower case with only a single slit, or the simplified blower case can be placed in the corresponding part of the suction equalizing box.

The length of the slit of the blower can be adjusted according to the use conditions. The structure can use the existing technology). From the maximum adjustable to zero, the corresponding formed diaphragm is adjusted from a complete full-membrane structure to an incomplete half-membrane structure that only has air suction and no air blowing.

In the suction duct, the effect of the oil fume separator can be detected, and a wind pressure sensor can be installed. The wind pressure sensor can be a weathervane type with a balance pendulum, a spring type, a resistance strain gauge type, a semiconductor pressure sensitive device, etc. The display shows the operator whether to change the filter material of the oil fume separator, etc., and detects the effect of oil fume separation.

In order to ensure the smoke exhaust effect and overcome the loss of wind pressure, auxiliary exhaust fans can be installed at the exhaust outlet under the cooker or at the interface with the kitchen building's flue, and check valves can be installed at the front and rear of the auxiliary exhaust fan to prevent oil fume from being reversed.

In order to meet the user's multi-functional requirements, the design of a household diaphragm cooker can adopt a composite structure. The composite structure can be designed with standard units, building blocks, and optional combinations, such as the burner in the burner and the fire protection thermocouple. The igniter intake window holes and the like can be combined into a unit, which is independently manufactured and assembled.

In the fluid diaphragm suction and exhaust device, the medium that forms the diaphragm is generally air, but for some special working occasions, it can be a fluid with other requirements. For example, some dust treatment can use water or non-volatile oil. In microelectronics, biological engineering High-cleanness environment, in order to eliminate poisonous gas locally, clean gas or high-purity gas can be used as the working medium.

The fluid diaphragm is used in different workplaces for scientific research, medicine, and industrial pollution control. In order to meet different requirements, it can be flat or three-dimensional, such as cylindrical, polygonal, and cone-shaped. By setting different pressure equalizing boxes, narrow The slit structure is designed and realized.

The device is also suitable for canteens, large kitchens, and integrated kitchens, especially for modern cookers, such as the Nakajima-style blower design advocated by the Milan Kitchen Supplies Expo 2000 in Italy.

The control part of the device can adopt digital computer to realize digital intelligent control, adopt fuzzy control method design, use advanced frequency conversion motor to adjust speed, and control air volume.

In order to meet the individual needs of users and reflect people-oriented, the following measures are taken:

1. The frying and frying stove stations are interchangeable with the cooking stove stations. In order to adapt to the habits of Europeans and Americans, the double-eye stove can be changed to a four-eye stove. In addition to gas stoves, electric stoves and electromagnetic stoves can also be used.

2. The left, right and rear positions of the exhaust air outlet for exhaust air are selected for scientific research.

For general products, a special wok is delivered. The wok of the special wok can be folded and turned into the pot. Usually, the upper lid of the cooker can be tightly closed, dustproof and beautiful. 3. To adapt to pots with a smaller caliber than the standard design pot, the pressure equalizing box is equipped with a collar 510.

4. In order to adapt to a pot that is shallower than the standard design pot, the fulcrum of the pot bracket on the cooker head can be adjusted with a bolt 508. The nut is equipped with a bolt, which can be lifted by rotating the bolt.

The oil fume separator can adopt the following structure:

1. Non-woven fabric (non-woven fabric) The three-layer plus filter bracket is shown in Figure 601 in Figure 7. The bracket is a flat box-type net frame made of metal mesh. The non-woven fabric is wrapped outside the net frame. Non-woven fabric.

2. For the structure of the spinning reel, see No. 602. When the wind pressure is too low, manually turn the reel handle 604 as shown in Figure 9. Turn the part that has been contaminated with oil and cut it to expose the new non-woven fabric layer. The computer does it automatically.

3. Use a sieve or other oil fume absorbing material installed in a flat box-type screen frame, periodically replace the absorbing material or burn with flame to carbonize the oil, all become non-toxic carbon and carbon dioxide gas to achieve regeneration of the absorbing material.

4. Adopt electrostatic dedusting technology, so that the ionization of oil fume is concentrated on the electrode, and then use mechanical method or combustion to clean and regenerate.

5. Use surfactants to dissolve oil stains and discharge them regularly. For example, use anionic surfactants or neutral surfactants and add DC electrophoresis to collect oil stains.

In order to facilitate the cleaning of oil on the cooker, a film is affixed to the air duct part in advance, and the film is changed regularly to simplify the cleaning method.

Industrial applicability

The present invention has the following positive and beneficial effects:

1. This device makes a flat or three-dimensional box-shaped fluid diaphragm isolator in front of the soot source to isolate the soot pollution source from the environment, which can reduce the distance D of soot space circulation to the limit value, and the experimental prototype reaches D <lcm , It can effectively prevent the spread of polluted smoke and dust, realize the isolation of the pollution source from the operating environment without affecting the sight and operation, and effectively prevent the environmental pollution caused by the spread of harmful gases or industrial dust.

2. The device can act as a two-way isolation. It can prevent the medium in the fluid diaphragm from polluting the environment, and it can also prevent the dust in the environment from contaminating the medium in the diaphragm. This is important for some special requirements. . For example, in the manufacture of integrated circuits, MOS-level volatile reagents are used for filling. The device can meet the requirements not only to prevent the volatilization of reagents from polluting the environment, but also to prevent the pollution of reagents by environmental dust. 3. The kitchen kitchen range hood using this device realizes the downdraft. The cooker no longer directly faces the smoke stream, and the cooker is separated from the smoke stream by the air flow diaphragm above the plane, so that the fume space can be circulated. The distance is reduced to close to the limit value, which can leave more effective space for the user in the kitchen. The air-flow diaphragm cooker hood can be directly placed on the stove without hanging above the cook, which not only improves the safety, but also because The pressure box protects the flame from being blown out by the wind and prevents accidents. Experiments have shown that the reasonable design of the height and distance between the wok and the pressure equalizing box can also serve as a "fire ring" for windproof insulation and increase the fire eye combustion. Waste heat and contact surfaces make full use of energy.

4. Kitchen floor hood can be integrated with the stove into a floor-type composite structure. The upper part is a fluid diaphragm kitchen hood. The diaphragm kitchen hood has a suction cover on the top, and the suction cover is a rotatable opening and closing type. Structure, the rotating side is provided with a rotatable air duct, the rotating air duct is connected to the pressure equalizing box, and the suction cover is provided with a suction hole, and the lighting cover can be installed on both sides of the suction cover. The middle of the design is a cooker (gas cooker, electromagnetic Cookers, or other new cookers) The lower part is a cupboard (seasoning cabinet, sterilizing cupboard, vegetable cleaner, etc.), and the cook is separated from the smoke stream by the air diaphragm above the plane, so that the space between the fume space is close to zero, and the exhaust fume pipe It can be installed at the bottom of the cabinet to realize the lower exhaust. In order to meet different needs, the kitchen range hood can be designed in various forms such as mobile, multi-eye, separate, with water tank, etc., in order to meet the needs of Chinese cooking. Optional components such as additional cantilever suction can be designed; therefore, the problem of kitchen soot pollution can be solved fundamentally. The wind mode can leave more effective space for the user. In addition, the air-flow diaphragm hood can be directly placed on the cooker, without hanging above the cook. Not only is it safe to not meet, but because the pot jacket has a pressure equalizing box. To protect the flame from being blown out by the wind, to prevent accidental injuries, and to provide an upgraded range hood product for the kitchen revolution.

Claims

Rights request

A fluid diaphragm suction and exhaust device for dust, which is arranged at a source of smoke pollution, characterized in that-a pressured fluid blowing outlet (2) parallel to the diffusion surface is provided on a side of the diffusion surface of the smoke and dust pollution source (1), the blowing outlet A pressure fluid source (203) is connected, and a negative pressure fluid suction port (3) parallel to the diffusion surface is provided on the other side symmetrical to its position, and the suction port is connected to a negative pressure generating device (303); from the blowout port ( 2) The blown fluid enters the suction port (3) to form a fluid diaphragm (4), which encloses the pollution source (1) soot and dust diffusion space in a soot channel from the blowout port to the suction port.

2. The fluid diaphragm suction and exhaust device according to claim 1, characterized in that: the front end of the fluid blow-out port (2) is connected to a blow-out pressure equalizing box (201), a blow-out duct (202), and a built-in fan / pump ( 203); the rear end of the suction port (3) is connected to a suction pressure equalizing tank (301), a suction duct (302), and a suction casing (304) with a built-in fan / pump (303).

3. The fluid diaphragm suction and exhaust device according to claim 1, characterized in that: the ratio of the length of the suction port (3) to the blowing port (2) is (5-9): (5-1); and The ratio of the suction flow rate to the blower flow rate is (3-9): (1-3); the suction port (3) and the blowing port (2) are flat and / or curved slits, and the width of the slit is 1-50mm between.

4. The fluid diaphragm suction and exhaust device according to claim 1, characterized in that: the fluid medium blown out from the blowout port (2) and sucked in from the suction port (3) is air, water, nonvolatile oil, chemical industry Any of fluid media.

5. The fluid diaphragm suction and exhaust device according to claim 1, characterized in that: the fan / pump (203) provided in the extrusion case (204) and the fan / pump provided in the suction case (304) (303) The drive shafts of two separate motors (205) and (305) can be connected separately, or they can be connected to the drive shafts that extend from both ends of the same motor.

6. A composite smoke exhaust cooker equipped with a fluid diaphragm smoke extraction and exhaust device according to claim 1, characterized in that: the cooker is provided with a casing (501), a gas source, a burner (502), and the inside of the casing Electrical appliances (503) and storage cabinets (504) can be provided, characterized in that the fluid is air, the air outlet (2) is a blower, the air inlet (3) is an air inlet, and the air pressure equalizing box (301) is installed in the upper part of the casing, the suction duct (302) is provided in the middle of the casing, and the suction casing (304) is provided in the lower part of the casing to form the lower exhaust air, and the suction equalizing box (301) and the suction An oil fume separator (6) is arranged between the air ducts (302), and shutters (505) are provided on the back of the casing. The suction duct (302) is provided with a linkage controllable valve (509) and is connected to a stove that generates odor.

7. The composite smoke exhaust cooker according to claim 6, characterized in that the structure of the oil fume separator (6) is: a non-woven fabric layer (601) built into the frame, and Textile cloth (602), and provided with an oil collecting tank (603) with a discharge port, a mesh frame with a built-in molecular sieve, activated carbon and other renewable filter adsorption materials, electrostatic ionization dust separator, surfactant separator.

8. The composite smoke exhaust cooker according to claim 6, characterized in that: an upper part of the casing, above the cooker, is provided with a suction cover (7) and / or a cantilever suction cover (8) ); The suction cover (7) is a sandwich structure, the inside plane of which is provided with a suction port (701), the suction cover (8) has a horn-shaped downward suction port, the suction port is connected to a duct through an elbow, The lower part of the suction cover (7) and the lower part of the duct of the suction cover (8) communicate with the suction pressure equalizing box (301) in the casing (501), respectively. .

9. The composite smoke exhaust cooker according to claim 6, characterized in that: a blower cover (9) is provided on the upper part of the casing (501), the blower cover (9) is a sandwich structure, and the bottom edge is connected to A blower case with a blower fan (901) inside the cabinet, a blower opening (902) with a slit at the top and lower periphery and slits provided on the top surface of the cabinet and surrounding the front, left and right sides of the cooker Corresponding to the air inlet (506), the slit air inlet (506) communicates with the air inlet case provided with the air inlet fan (903).

10. The composite smoke exhaust cooker according to claim 6, characterized in that: the connection part of the suction cover (7) and the blower cover (9) with the casing is capable of lifting and lowering, its

The central part of the frames on both sides is provided with a rotating shaft to be able to rotate up and down. The rotating part of the blowing cover is connected and sealed with a flexible material (904).