JP2011525605A - Kitchen ventilation fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a kitchen ventilation fan which is structurally highly efficient and energy-saving and does not have oil attached, and at the same time has been given the features of high efficiency, energy saving, oil-free smoke, cleanliness / environmental conservation and convenient cleaning, indoor environment, machinery Comprehensively improve the internal and outdoor environments.
A kitchen ventilation fan includes a fan (1), an oil filter (2), a casing (3), an oil smoke cover (5), an illumination lamp, a multi-button switch (4), and the like, and the casing of the fan (1). (12) has a circular double chamber or multi-chamber structure with an intake port (10) and an exhaust port (8), and the impeller (6) of the fan (1) is at least one set, closed on one side. In addition, the oil filter (2) includes a filter bracket (18), a primary oil strainer (17), and a secondary oil strainer (16). And a primary oil strainer (17) fitted on the outside of the filter bracket (18). The na (16) is attached to the upper end of the filter bracket (18), and the oil collecting tray (19) is connected to the lower end of the filter bracket (18).
[Selection] Figure 1

Description

  The present invention relates to a kitchen ventilation fan that is structurally highly efficient and energy-saving and does not have oil attached, and belongs to the field of air purification technology.

  The kitchen exhaust fan is a centrifugal fan driven by electric power, and is a cleaning tool that absorbs oily smoke and harmful gas generated during cooking. During everyday cooking, the generation of oily smoke is inevitable, but if it is not removed in a timely manner, environmental pollution will occur with the passage of time, and the white walls will gradually become tan, and clean utensils and other utensils will become full of oil. Becomes unpleasant for those who cook or have a bad smell. For this reason, kitchen ventilators that can eliminate the unpleasant smell of oily smoke in a timely manner are almost an indispensable item in each household, and are attracting people's attention. According to statistics, the annual production of kitchen ventilators in Japan in 2005 has already reached 730.1 million units.

  Currently, there are many types of kitchen ventilation fans that have already been researched and used, and are divided into general types, deep cover types, and deep cabinet types according to their external structure, and can be divided into two types: single motors and left and right double motors. . Depending on the speed adjustment method, it can be divided into single speed, double speed and continuously variable transmission. The basic structure of the kitchen ventilation fan includes a motor, an impeller (wheel), a casing, an oil tank, an oil collector, an illumination lamp, a multi-button switch, and the like. The basic principle of any kitchen ventilation fan is a kitchen ventilation fan that uses a centrifugal multi-leaf rotor fan.

  However, the kitchen ventilation fan of the structure has the following disadvantages.

  (1) Oil sticking is heavy. All kitchen exhaust fans emit oil smoke through a multi-float, but if the oil smoke is not purified effectively, the inner wall of the exhaust fan is contaminated and a large amount of oil adheres unevenly to the fan impeller. The rotation of the fan gradually loses its dynamic balance, the suction effect gradually deteriorates, and the noise of the machine gradually increases.

  (2) Low efficiency and high energy consumption. All kitchen ventilation fans that are commonly used in Japan and overseas realize the discharge of oily smoke by rotating the multi-float and acting on the oily smoke. When the oily smoke touches the multi-layer floater that rotates at high speed and flows on the surface, not only does it collide with the rotor, but also friction with the inner wall of the fan casing. In addition to consuming energy, there is significant noise and wear, which results in low efficiency, high energy consumption, high noise, and short life.

  (3) Environmental pollution. The main function of the kitchen exhaust fan is to maintain the cleanliness of the kitchen, reduce environmental pollution, and be beneficial to human health, but the oil smoke absorption rate of the conventional general exhaust fan is about 70%, As the oil smoke escapes and diffuses, the air in the room deteriorates, causing harm to the health of the family, and the walls are filled with oil. Currently, oil smoke is generally separated using an oil smoke strainer, but since some oil is only slightly filtered, the purification rate of the oil smoke discharged to the outside is low, and a certain amount of outdoor Invites environmental pollution.

  (4) Separate cleaning is expensive. The kitchen exhaust fan is very sticky to the oil, so it is necessary to constantly clean and replace the strainer. The general user cleans the exhaust fan about 2 to 3 times a year, but it is disassembled and cleaned by specialist personnel. Therefore, a long period of maintenance requires a lot of costs.

  Many researchers at home and abroad have made long-term efforts to reduce oil adhesion, remove oil smoke, clean air, protect the environment, improve efficiency, and save energy. A series of measures such as rotor surface treatment, additional purifier, oil smoke cover, strainer, and oil smoke separation have been taken to achieve a certain effect, but the impeller is rotated to transmit energy. The traditional theoretical framework cannot be exceeded. Although there are some effects, fundamental solutions cannot be made, so some performance has been improved to some extent, but no breakthrough progress has been made.

  In order to solve the above problems, the object of the present invention is to provide a kitchen ventilation fan that is structurally highly efficient and energy-saving and does not have oil attached, and at the same time, “high efficiency, energy saving, oil-free smoke, cleanliness and environment It is to give features such as “maintenance and convenient cleaning” and to further improve the indoor environment, machine internal environment, and outdoor environment.

  In order to achieve this goal, the present invention uses the following technical solution.

  The present invention includes a fan, an oil filter, a casing, an oil smoke cover, an illumination light, and a multi-button switch, and the fan casing has a circular double chamber or multi-chamber structure with an intake port and an exhaust port. An impeller is a structurally efficient, energy-saving, and oil-free kitchen ventilation fan composed of at least one pair of arcuate flowway blades that are closed on one side and expanded in the axial direction.

  The circular double chamber or the multi-chamber has a circular gas cyclone chamber and a circular impeller chamber structure in a casing, and the impeller is mounted in the impeller chamber, and a motor disposed on the upper portion of the casing. At the same time, there is an intake port on the lower side of the gas cyclone chamber and an exhaust port on the right side.

  The blades of the impeller are mounted on an impeller board, the impeller board and the motor are connected by a motor shaft, and a front seal plate is provided at the front end of the impeller board.

  The oil filter has a frustum shape, and includes a filter bracket, a primary oil strainer, a secondary oil strainer, and an oil collecting tray. Among them, the primary oil strainer is fitted on the outside of the filter bracket. The secondary oil strainer is attached to the upper end of the filter bracket, and the oil collection tray is connected to the lower end of the filter bracket. Both the primary oil strainer and the secondary oil strainer are made of flexible material, and the oil collection tray is made of plastic or Made of hard material such as metal plate.

  The oil smoke cover has a three-sided closed structure and uses a metal frame made of stainless steel or other metal. The upper half of the metal frame is closed with glass and the lower half is made of stainless steel plate or other. Closed with a metal plate.

  The structurally efficient and energy-saving kitchen ventilation fan according to the present invention includes a fan, an oil filter, a casing, an oil smoke cover, an illumination lamp, a multi-button switch, and the like. Its basic features include an impeller made up of blades of an arc-shaped flow path that is closed on one side and expanded in the axial direction, and a unique circular double chamber (or multiple Chamber) is a casing structure. With this structure of the fan, a new energy transfer method, that is, an energy transfer method using a gas cyclone field can be realized. This energy transmission fan is more efficient, energy saving, less noise, longer life, oil smoke and impeller compared to conventional fan that rotates and rotates the impeller Separation, that is, the oil smoke can be discharged without touching the impeller, so that it is possible to realize the absence of oil attachment in a structurally true sense. The oil filter is designed in the shape of a frustum, and is constituted by a filter bracket, a primary oil strainer, a secondary oil strainer, and an oil collecting tray. The primary oil strainer is fitted to the outside of the filter bracket, the secondary oil strainer is attached to the upper end of the filter bracket, and the oil collecting tray is connected to the lower end of the filter bracket.

  The beneficial effects of the present invention are as follows. The special combination of blades, impeller and fan casing structure, on the one hand, prevents oil smoke from touching the impeller so that collisions and friction between the transported gas and the impeller and casing do not occur as much as possible. Thus, the volume loss can be greatly reduced, the flow loss can be basically eliminated, the energy consumption inside the machine can be greatly reduced, and the life of the impeller can be significantly extended. On the other hand, an arc type flowway impeller closed on one side is used inside a circular double chamber casing, thereby forming an enhanced gas cyclone field that rotates at high speed around the axis. The cyclone field does not transport the gas by rotating the impeller or blades, but the gas is transported in a “gas driven gas” manner, which makes it possible to use a new energy transfer scheme, ie, a gas cyclone field. Energy transfer can be realized. Therefore, it is structurally efficient and energy-saving, and in the kitchen ventilation fan without oil attached, it realizes the real absence of oil attachment, guarantees the impeller cleanliness and disassembly / cleaning exemption, and at the same time has high efficiency, It has features such as low energy consumption, low noise, few consumables, easy processing, and long life.

  Using a frustum-shaped oil filter, the oil smoke is filtered twice by the primary oil strainer and the secondary oil strainer, so that thorough separation of the oil smoke can be realized, the purification rate of the oil smoke is remarkably increased, and the inside of the machine is cleaned Can be further ensured, and outdoor environmental contamination can be effectively prevented. Since the primary oil strainer and the secondary oil strainer are made of a flexible material, the primary oil strainer and the secondary oil strainer are convenient for disassembly cleaning or replacement, and the operation and maintenance costs are extremely low.

  By using an oil smoke cover with a three-sided closed structure, it is possible to completely cover the oil smoke, effectively prevent the escape and diffusion of the oil smoke, significantly improve the absorption and discharge efficiency of the oil smoke, and clean the indoor air Wall cleanliness can be guaranteed.

The main technical indicators of the kitchen ventilation fan with high efficiency and energy saving of the present invention, with no oil attached, can improve efficiency by 10% or more, energy saving is 10% or more, noise is 50dB or less, oil smoke absorption rate is 95% or more, oil smoke purification rate is 90% or more, and life is improved 3 times or more. At the same time, it has features such as "high efficiency and energy saving, no oily smoke, cleanliness, environmental conservation, and convenient cleaning", and comprehensive economic and technical indicators have reached advanced levels in Japan and overseas. , Energy saving / CO ₂ emission reduction effect is remarkable, economic and social effect is remarkable.

  The principles and techniques of the present invention are widely applied to the manufacture of kitchen ventilation fans in home kitchens, hotels, restaurants, and canteens.

Sketch of kitchen ventilation fan structure Fan structure sketch Sketch of impeller structure Oil filter structure sketch Sketch of oil smoke cover a direction structure Sketch of b-direction structure of oil smoke cover

  The present invention will be further described below with reference to the accompanying drawings.

  As shown in FIG. 1, a structurally efficient and energy-saving kitchen ventilation fan that does not include oil, including a fan 1, an oil filter 2, a casing 3, an oil smoke cover 4, an illumination lamp, a multi-button switch 5, and the like. As shown in FIG. 2, the fan 1 includes a casing 12, an impeller 6, an impeller chamber 9, a gas cyclone chamber 11, an intake port 10, an exhaust port 8, a motor 7, and the like. One impeller 6 is constituted by at least one pair of arcuate flow path blades 13 which are closed on one side and expanded in the axial direction, and the casing 12 of the fan 1 includes an intake port 10 and an exhaust port 8. It has a circular double chamber or multi-chamber structure. The circular double chamber or multi-chamber structure is obtained by dividing the casing 12 into a circular gas cyclone chamber 11 and a circular impeller chamber 9, and the impeller 6 is mounted in the impeller chamber 9, At the same time, there is an intake port 10 on the lower side of the gas cyclone chamber 11 and an exhaust port 8 on the right side.

  As shown in FIG. 3, the impeller 6 includes a blade 13 and an impeller board 14 connected to each other, and the impeller board 14 is connected to the motor shaft of the motor 7. A front seal plate 15 is provided at the front end of the chassis 14.

  As shown in FIG. 4, the oil filter 2 has a frustum-shaped design, and includes a filter bracket 18, a primary oil strainer 17, a secondary oil strainer 16, and an oil collecting tray 19. The primary oil strainer 17 is fitted to the outside of the filter bracket 18, the secondary oil strainer 16 is attached to the upper end of the filter bracket 18, and the oil collecting tray 19 is connected to the lower end of the filter bracket 18. The primary oil strainer 17 is made of a flexible material (for example, nylon mesh), the secondary oil strainer 16 is also made of a flexible material (for example, multiple layers of gauze, etc.), and the oil collecting tray 19 is made of a plastic or metal plate or the like. Made of hard material.

  As shown in FIGS. 5 and 6, the oil smoke cover 4 has a three-sided closed structure, a metal frame 20 is made of stainless steel or other metal, and the upper half is closed with a glass 21. The lower half is closed with a stainless steel plate 22 or other metal plate.

DESCRIPTION OF SYMBOLS 1 ... Fan 2 ... Oil filter 3 ... Casing 4 ... Oil smoke cover 5 ... Multi button switch 6 ... Impeller 7 ... Motor 8 ... Exhaust port 9 ... Impeller chamber 10 ... Inlet 11 ... Airflow cyclone chamber 12 ... Fan casing 13 ... Blade 14 ... Impeller panel 15 ... Front seal plate 16 ... Secondary oil strainer 17 ... Primary oil strainer 18 ... Filter bracket 19 ... Oil collecting tray 20 ... Metal frame 21 ... Glass 22 ... Stainless steel plate

Claims (5)

  It includes a fan (1), an oil filter (2), a casing (3), an oil smoke cover (4), an illuminating lamp, and a multi-button switch (5). The casing (12) of the fan (1) has an intake port (10). And a circular double chamber or multi-chamber structure with an exhaust port (8), and the impeller (6) of the fan (1) has at least one set of arcuate shape that is closed on one side and expanded in the axial direction. Structurally efficient and energy-saving kitchen ventilation fan with no oil attached, characterized by comprising flowway vanes (13).   The ventilation fan according to claim 1, wherein the circular double chamber or multi-chamber has a structure of a circular gas cyclone chamber (11) and a circular impeller chamber (9) in the casing (12), The impeller (6) is mounted in an impeller chamber (9) and is connected to a motor (7) located at the top of the casing (12) and at the same time under the gas cyclone chamber (11). A structurally efficient and energy-saving kitchen ventilation fan with no oil attached, characterized in that it has an intake (10) on the side and an exhaust (8) on the right.   The ventilation fan according to claim 1 or 2, wherein the blade (13) of the impeller (6) is mounted on an impeller board (14), and the impeller board (14) and the motor (7) are motors. A structurally efficient and energy saving kitchen ventilation fan that is connected by a shaft and is provided with a front seal plate (15) at the front end of the impeller (14).   The ventilation fan according to claim 1, wherein the oil filter (2) has a frustum shape, and is constituted by a filter bracket (18), a primary oil strainer (17), a secondary oil strainer (16), and an oil collecting tray (19). Among them, the primary oil strainer (17) is fitted to the outside of the filter bracket (18), and the secondary oil strainer (16) is attached to the upper end of the filter bracket (18) to collect oil. The dish (19) is connected to the lower end of the filter bracket (18). Both the primary oil strainer (17) and the secondary oil strainer (16) are made of a flexible material, and the oil collecting dish (19) is made of plastic. Or it is made of a hard material such as a metal plate. Wearing and not the kitchen ventilation fan.   The ventilation fan according to claim 1, wherein the oil smoke cover (4) has a three-sided closed structure, and uses a metal frame (20) made of stainless steel plate (22) or other metal, 20) A structurally efficient and energy-saving kitchen ventilation fan with no oil attached, wherein the upper half is closed with glass (21) and the lower half is closed with stainless steel or other metal plate.

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