An integrated ultra-thin fume hood purification device

Abstract

The application discloses an integrated ultrathin fume hood purifying device, which comprises a shell with a groove at the bottom end, and the inside of the shell is divided into a fresh air box, a purifying box and a static pressure box from front to back by two partitions; the fresh air box can supply fresh air to a space; a negative pressure fan unit is arranged in the middle of the purifying box; the fan unit is symmetrically arranged with purifying units on both sides; the static pressure space is communicated with the purifying box; the static pressure box is composed of a static pressure space and an oil storage groove which are communicated with each other; the static pressure space is used for slowing down the wind speed; air inlets are uniformly arranged at the top end of the groove and embedded with oil throwing discs; a plurality of blocking plates are inserted into the installation groove at the back side of the groove to form an air inlet channel; the blocking plates and the inner wall of the installation groove are provided with corresponding oil discharge holes; oil stains can flow into the oil storage groove; the bottom of the shell is provided with an oil discharge interface which is communicated with the oil storage groove; the front side of the shell is provided with an operation panel which can control fresh air supply and drive the fan unit, the purifying unit and the oil throwing disc; and the shell is also provided with an air outlet for discharging purified air.

Description

Technical Field

[0001] This invention patent relates to the field of oil fume air purification equipment, specifically an integrated ultra-thin fume hood purification device. Background Technology

[0002] Commercial kitchen fume purification equipment is an essential environmental protection facility for catering enterprises. Its core function is to remove cooking fumes, oil mist, particulate matter and odors, ensuring that emissions comply with GB18483-2001 "Emission Standard for Cooking Fumes".

[0003] Most existing fume purification equipment uses two parts, one above the other, which increases loading and unloading costs during transportation. Furthermore, on-site assembly of both parts during installation increases installation time and cost. Additionally, most existing fume purification equipment uses a single-sided exhaust system, which can lead to overflow and reduced purification efficiency due to uneven fume extraction.

[0004] The purpose of this invention is to provide an integrated ultra-thin fume hood purification device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this invention provides the following technical solution: an integrated ultra-thin smoke hood purification device, including a shell with a groove at the bottom, wherein the shell is divided into a fresh air box, a purification box and a static pressure box arranged sequentially from front to back by two partitions; The fresh air box is used to replenish the working space of the purification device with fresh air, thereby solving the problem of poor ventilation of the purification device caused by long-term exhaust. A negative pressure fan unit is installed in the middle of the purification chamber. Two purification units are symmetrically installed in the purification chamber on the two input ends of the fan unit. The purification units are used to intercept oil mist and deodorize the oily air. A channel connecting the static pressure space and the purification chamber is provided on the partition on the input end side of the purification unit. The static pressure chamber includes a static pressure space and an oil storage tank connected from top to bottom. The static pressure space is used to reduce the air velocity. N air inlets are evenly arranged at the top of the groove between the oil storage tank and the purification chamber. An oil slinger is embedded in each air inlet. An installation groove is provided in the middle of the rear side wall of the groove. N baffles are evenly inserted into the installation groove. An air intake channel is formed between the baffles and the groove. N oil drain holes a are evenly arranged at the insertion end of the baffles. N oil drain holes b are evenly arranged on the inner wall of the installation groove. The sum of the number of oil drain holes a of the N baffles is equal to the number of oil drain holes b, and their positions correspond one-to-one. An oil drain interface communicating with the oil storage tank is provided at the bottom of the shell. The outer front wall of the housing is provided with an operation panel, which controls the fresh air box to make up the air and is connected to the fan unit, purification unit and oil slinger. The housing is provided with an air outlet for the fan unit to discharge oily fume air.

[0006] Furthermore, the top of the fresh air box is provided with a fresh air inlet that connects to the external air supply unit, and the front outer wall of the fresh air box is provided with a fresh air outlet a, which is composed of N fresh air outlet holes a evenly arranged.

[0007] Furthermore, N fresh air outlets b are evenly arranged at the bottom of the fresh air box, and each fresh air outlet b is composed of N evenly arranged fresh air outlet holes b.

[0008] Furthermore, the bottom of the inner wall of the fresh air box is slidably provided with a number of sealing plates equal to the number of fresh air outlets b. The sealing plates cover the fresh air outlets b at corresponding positions. The sealing plates are provided with a number of fresh air outlet holes c equal to the number of fresh air outlet holes b at corresponding positions and corresponding to each other. Two toggle blocks are symmetrically provided at both ends of the sealing plates, penetrating and extending out of the bottom of the housing. The bottom of the housing is provided with a limiting groove for the toggle blocks to slide left and right.

[0009] Furthermore, there are two air outlets. One air outlet is located at the top of the housing where the fan unit is installed, and the other air outlet is located on the upper part of the outer rear wall of the housing. The other air outlet is connected to the inner wall of the purification box where the fan unit is installed through an air duct. The output end of the fan unit can be turned to either air outlet and fixedly connected.

[0010] Furthermore, the fan unit includes a P-shaped tube, a dual-inlet centrifugal fan disposed within the P-shaped tube, and support rings symmetrically disposed on both sides of the P-shaped tube. A retractable corrugated pipe is installed at the output end of the P-shaped tube, and the output end of the corrugated pipe is fixedly connected to any air outlet by multiple screws. The dual-inlet centrifugal fan includes an external rotor motor and two centrifugal fan cylinders. A transmission ring is fixedly disposed in the middle of the outer wall of the rotor cylinder of the external rotor motor. The two centrifugal fan cylinders are symmetrically installed on both sides of the transmission ring and are connected by transmission. A convex ring extends from the side wall of the support ring near the P-tube. The convex ring is embedded in and rotatably connected to the input end of the P-tube. A mounting bracket is provided on the side wall of the support ring away from the P-tube. The stator shafts at both ends of the external rotor motor are fixedly connected to the middle of the two mounting brackets respectively. The centers of the stator shafts at both ends of the external rotor motor are aligned with the center of the input end of the P-tube. A fixing bracket is provided on the side wall of the support ring located on the outer periphery of the mounting bracket. The two fixing brackets are symmetrically arranged. The end of the fixing bracket away from the P-tube is fixedly connected to the front inner wall of the purification chamber.

[0011] Furthermore, the mounting bracket and the support ring are fixed together by bolts, and at least two positioning holes are provided around the center of the input end on the outer wall of the P-type tube. The included angle between two adjacent positioning holes is ≤90°. The positioning holes are used for bolts to pass through in order to fix the P-type tube.

[0012] Furthermore, the top of the groove located between the oil storage tank and the purification box is inclined downward from front to back, and the top of the groove located between the fresh air outlet b and the purification box is inclined downward from back to front. The baffle plate is parallel to the top of the corresponding groove, and the front end of the baffle plate is fixed to the top of the inner wall of the groove through a connecting frame.

[0013] Furthermore, the bottom end of the barrier plate and the bottom end of the inner wall are integrally hydraulically formed with N evenly arranged air guide grooves and oil guide protrusions, and the top of the oil guide protrusions is concentrically provided with air supply ports.

[0014] Furthermore, inspection ports a, b, and c are respectively provided on the front side wall of the fresh air box and on the front side of the purification box located at the purification unit and the fan unit. Inspection doors a and b are respectively provided on the front side of the inspection ports a and b, covering the corresponding inspection ports. The inspection doors a and b are respectively up-folding and down-folding. The inspection doors a and b are fixed by hinges and latches. The fresh air outlet a is located on the inspection door a. The front side of the inspection port c is covered by a removable cover plate.

[0015] The beneficial effects achieved by this invention patent are as follows: 1. Adopting an integrated design, it abandons the traditional splicing structure, eliminating the need for disassembly during transportation and loading / unloading, reducing the number of handling operations and losses, and lowering loading and unloading costs. At the same time, on-site installation requires no additional assembly or splicing, significantly shortening installation time, reducing installation labor costs, and adapting to the rapid deployment needs of commercial kitchens.

[0016] 2. By symmetrically setting dual purification units in the purification chamber, combined with negative pressure suction from the central fan unit, a uniform smoke collection and purification path is formed on both sides, solving the problem of uneven smoke distribution in traditional single-sided exhaust. The oil fumes undergo multi-stage treatment, including centrifugal oil interception by the oil-slinging plate, coarse filter interception, electric field fine filtration, and UV deodorization, effectively removing large oil mist particles, fine particulate matter, and odors. The emissions fully comply with GB18483-2001 standards, meeting the high oil fume purification needs of commercial kitchens.

[0017] 3. The upper fresh air outlet a replenishes the kitchen space with fresh air, avoiding the vicious cycle between negative pressure caused by exhaust and increased energy consumption due to fan overload. At the same time, the bottom fresh air outlet b forms a directional air wall, which not only blocks the spread of oil fumes to the chef's mouth and nose / work area, but also accelerates sweat evaporation and cooling, alleviating heatstroke, dryness and fatigue, and metabolic disorders in high-temperature operations, reducing the irritation of oil fumes to the respiratory tract, and taking into account both environmental protection and personnel health.

[0018] 4. Through the sliding sealing plate and lever structure, the chef can adjust the opening and air volume of the air outlet b in real time. When stir-frying, it can be fully opened to enhance smoke isolation and cooling. When cooking lightly, it can be half-opened to avoid interfering with the fire. When there is no need for direct airflow, it can be closed to prevent shoulder cold. It is fully adaptable to different cooking conditions and personal comfort needs, making it more flexible.

[0019] 5. The dual air outlet design at the top and rear of the housing, combined with the P-type tube of the fan unit for rotatable adjustment and the corrugated tube for telescopic connection, can flexibly adapt to different reserved installation conditions such as ceiling exhaust pipes and wall exhaust vents in commercial kitchens, without the need for additional modification of the exhaust channel, making it more adaptable to various installations.

[0020] 6. The inclined design at the top of the groove is parallel to the baffle plate and, together with the air guide duct, directs the rising oil fumes to the air intake channel, improving the oil fume capture rate.

[0021] 7. The air intake design can shorten the path of oil fume intake, offset the exhaust resistance caused by excessive static pressure space pressure, ensure stable exhaust air velocity, and avoid oil fume retention.

[0022] 8. The oil-guiding protrusions of the baffle plate guide oil and water to flow to the oil drain hole, preventing it from dripping onto the stove / dish through the air inlet; the integrated design of the oil storage tank and oil drain interface allows for centralized collection and unified discharge of oil, reducing the accumulation of oil and odor in commercial kitchens, and making cleaning and maintenance more convenient.

[0023] 9. The fresh air box, purification unit, and fan unit are each equipped with a dedicated access port, with top / bottom opening access doors and removable covers, so there is no need to disassemble the entire unit for maintenance.

[0024] 10. The fresh air box access door is equipped with pneumatic / hydraulic support rods, which provide stable support after opening and facilitate quick inspection and maintenance by personnel.

[0025] 11. Recessed lighting at the top of the recessed area to meet cooking lighting needs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an existing fume hood purification device; Figure 2 This is a schematic diagram of the structure of an integrated ultra-thin fume hood purification device in the main view of the embodiment; Figure 3 This is a rear view schematic diagram of an integrated ultra-thin fume hood purification device in the embodiment. Figure 4 for Figure 2 A cross-sectional view along the AA direction; Figure 5 for Figure 2 A cross-sectional view along the BB direction; Figure 6 for Figure 5 A magnified view of a portion of point a; Figure 7 This is a top-down exploded view of the integrated ultra-thin fume hood purification device in the embodiment. Figure 8 This is an exploded view of the integrated ultra-thin fume hood purification device in the embodiment, viewed from below. Figure 9 This is a schematic diagram of the barrier plate in the embodiment; Figure 10 This is a schematic diagram of the fan unit in the embodiment; Figure 11 for Figure 10 A sectional view along the CC direction; Figure 12 for Figure 11 A magnified view of a portion at point b. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 2-8 As shown, this invention patent discloses an integrated ultra-thin fume hood purification device (hereinafter referred to as "the whole machine" instead of "integrated ultra-thin fume hood purification device"), including: a housing 1 with a groove 11 at the bottom end, and the housing 1 is divided into a fresh air box 2, a purification box 3 and a static pressure box 4 arranged sequentially from front to back by two partitions. The fresh air box 2 is used to replenish the working space of the purification device with fresh air, thereby solving the problem of poor ventilation of the purification device caused by long-term exhaust. A fan unit 31 that generates negative pressure is installed in the middle of the purification chamber 3. Two purification units 32 are symmetrically installed in the purification chamber 3 on the two input ends of the fan unit 31. The purification units 32 are used to intercept oil mist and deodorize the oily air. The purification unit 32 is composed of a coarse filter 321, an electric field 322 and a UV component 323 arranged in sequence from the corresponding side channel 33 to the fan unit 3. The partition on the input end side of the purification unit 32 is provided with a channel 33 that connects the static pressure space 41 and the purification chamber 3. The static pressure chamber 4 includes a static pressure space 41 and an oil storage tank 42 connected from top to bottom. The static pressure space 41 is used to reduce the air velocity. N air inlets 411 are evenly arranged at the top of the groove 11 between the oil storage tank 42 and the purification chamber 3. An oil slinger 412 is embedded in the air inlet 411. An installation groove 5 is provided in the middle of the rear side wall of the groove 11. N baffles 6 are evenly inserted in the installation groove 5. An air intake channel 7 is formed between the baffles 6 and the groove 11. N oil drain holes a61 are evenly arranged at the insertion end of the baffles 6. N oil drain holes b51 are evenly arranged on the inner wall of the installation groove 5. The sum of the number of oil drain holes a61 of the N baffles 6 is equal to the number of oil drain holes b51, and their positions correspond one-to-one. An oil drain interface 12 connected to the oil storage tank 42 is provided at the bottom of the shell 1. The outer front wall of the housing 1 is provided with an operation panel 8. The operation panel 8 controls the fresh air box 2 to make up the air and is connected to the fan unit 31, the purification unit 32, and the oil slinger 412. The housing 1 is provided with an air outlet 13 for the fan unit 31 to discharge oily fume air. The volume of the static pressure space 41 is greater than the volume of the air inlet channel 7.

[0029] Based on the above structure, such as Figure 2-8 As shown, during use, kitchen staff start the entire unit via the control panel 8. The fan unit 31 generates negative pressure, which sequentially acts on the purification unit 32, channel 33, static pressure space 41, air inlet 411, air intake channel 7, and oily air. During this process, oily air is drawn in through the air intake channel 7 and enters the oil-slinging plate 412. The plate of the oil-slinging plate 412 rotates at high speed under the drive of the motor, forming a mechanical barrier. When the oily air enters the oil-slinging plate area, it first collides violently with the high-speed rotating plate, spokes, or blades, disrupting the airflow stability. This causes large oil mist and water droplets to lose kinetic energy and adhere to the plate surface. The large oil mist and water droplets condense and form liquid as the oil-slinging plate rotates at high speed. Then, as the oil-slinging plate rotates at high speed, it generates centrifugal force hundreds of times greater than gravity, utilizing the density difference between oil, water, and air to separate most of the water and oil. All are thrown into the static pressure space 41. Water and oil flow along the inner wall of the static pressure space 41 to the oil storage tank 42 for storage. The remaining oily air enters the static pressure space 41. At this time, due to the law of conservation of fluid flow formed by the volume of the static pressure space 41 being greater than the volume of the air inlet channel 7 (the same air volume is distributed to a larger cross section, the air flow space becomes larger, the flow is obstructed and slowed down, and the flow velocity naturally decreases), the flow velocity of the oily air in the static pressure space 41 slows down. Then, the oily air enters the two ends of the purification box 3 through the two channels 33 respectively. The oily air passes through the coarse filter 32, electric field 322 and UV component 323 on the corresponding side in sequence. The coarse filter 32 intercepts large oil mist particles, the electric field 322 removes small oil mist particles in the flue gas, and the UV component removes odors. Finally, the filtered air enters the fan unit 31 and is discharged into the external exhaust pipe / exhaust port through the air outlet 13.

[0030] Furthermore, such as Figure 2 , 7 As shown in Figure 8, the top of the fresh air box 2 is provided with a fresh air inlet 21 that connects to the external air supply unit. The air supply unit includes an air supply fan for drawing in external air from the working space and an air supply pipe for delivering external air to the fresh air box 2. The front outer wall of the fresh air box 2 is provided with a fresh air outlet a22, which is composed of N fresh air outlet holes a evenly arranged. Specifically, the external air supply unit draws in outside air and sends it into the fresh air box 2 through the fresh air inlet 21. The air in the fresh air box 2 is then evenly introduced into the working space through the fresh air outlet a22. This achieves the goal of the whole unit drawing in air from the working space while filtering oily and fume-containing air, while simultaneously replenishing the working space with outside air. This avoids the negative pressure phenomenon in the working space caused by simply filtering exhaust air, and further avoids the problem of the fan unit increasing its power due to negative pressure in the working space. This creates a vicious cycle.

[0031] Furthermore, such as Figure 3-4 As shown in Figure 8, considering that the stove at the installation location of the whole machine is a high-temperature area, the chef may suffer from heatstroke, decreased physical strength, long-term heat fatigue, metabolic disorders, and weakened physical resistance due to working in this environment for a long time, as well as the high-temperature oil fumes mixed with hot air irritating the mouth, nose and throat and inducing respiratory discomfort, N fresh air outlets b23 are evenly arranged at the bottom of the fresh air box 2. The fresh air outlets b23 are composed of N fresh air outlet holes b evenly arranged. Specifically, outside air blows directly downwards through the fresh air outlet b23, providing airflow for the chefs below, accelerating the evaporation of sweat to dissipate heat, reducing the perceived temperature, cooling down, promoting air circulation, relieving stuffiness, and improving environmental comfort. At the same time, the direct airflow forms a wind wall below the fresh air outlet b23, which can create a three-dimensional air barrier at the source of oil fumes. This effectively blocks the high-temperature oil fumes and heat from drifting and overflowing laterally to the chef's face, mouth and nose and the kitchen operation area, preventing the oil fumes from spreading irregularly and limiting the range of oil fume dispersion from the source. In addition, the wind wall can form a cold and hot airflow isolation layer to block the spread of high-temperature hot airflow from the stove.

[0032] Furthermore, such as Figure 3-4As shown in Figure 8, considering that not all dishes are stir-fried with heavy oil during cooking, and that prolonged exposure to direct airflow can easily lead to shoulder joint catching a cold, a sealing plate 24 is slidably installed at the bottom of the inner wall of the fresh air box 2, with the number of sealing plates 24 equal to the number of fresh air outlets b23. The sealing plate 24 covers the corresponding fresh air outlets b23. The sealing plate 24 is provided with a number of fresh air outlet holes c equal to the number of fresh air outlet holes b at the corresponding positions of the fresh air outlets b23. Two levers 241 are symmetrically arranged at both ends of the sealing plate 24, penetrating and extending out of the bottom of the housing 1. The bottom of the housing 1 is provided with a limiting groove 14 for the levers 241 to slide left and right. The fresh air outlet b23 blows directly downwards through the airflow. The chef can control the opening / closing of the fresh air outlet b23 according to personal needs by moving the toggle block 241 along the limiting groove 14. Specifically, when the toggle block 241 moves to one end of the limiting groove 14, the fresh air outlet c on the sealing plate 24 aligns with the fresh air outlet b of the fresh air outlet b23, and the fresh air outlet b23 is fully open. When it is necessary to lower / close the fresh air outlet b23, the chef moves the toggle block 241 to the other end of the limiting groove 14 to fully abut against the other end of the limiting groove 14, and the ventilation between the fresh air outlet c and the fresh air outlet b23 is reduced / completely closed.

[0033] Furthermore, such as Figure 2-5 As shown in Figure 7, since the location of the exhaust duct reserved in different kitchens is different when installing the whole unit, such as the exhaust pipe being installed above the whole unit by means of a suspended ceiling, or the exhaust vent being opened directly on the rear wall of the whole unit, we designed two exhaust vents 13. One exhaust vent 13 is set at the top of the housing 1 where the fan unit 31 is installed, and the other exhaust vent 13 is set at the upper part of the rear outer wall of the housing 1, and is connected to the inner wall of the purification box 3 where the fan unit 31 is installed through the air duct 15. The output end of the fan unit 31 can be turned to either exhaust vent 13 and fixedly connected. Furthermore, such as Figure 10-12 As shown, the fan unit 31 includes a P-type tube 311, a dual-inlet centrifugal fan 312 disposed inside the P-type tube 311, and support rings 313 symmetrically disposed on both sides of the P-type tube 311. A retractable corrugated pipe 316 is installed at the output end of the P-type tube 311. The output end of the corrugated pipe 316 is fixedly connected to any air outlet 13 by multiple screws. The dual-inlet centrifugal fan 312 includes an external rotor motor 3121 and two centrifugal fan cylinders 3122. A transmission ring 3123 is fixedly disposed in the middle of the outer wall of the rotor cylinder of the external rotor motor 3121. The two centrifugal fan cylinders 3122 are symmetrically installed on both sides of the transmission ring 3123 and are connected by transmission. A convex ring 3131 extends from the side wall of the support ring 313 near the P-type tube 311. The convex ring 3131 is embedded and rotatably connected to the input end of the P-type tube 311. A mounting bracket 314 is provided on the side wall of the support ring 313 away from the P-type tube 311. The stator shafts at both ends of the external rotor motor 3121 are fixedly connected to the middle of the two mounting brackets 314 respectively. The centers of the stator shafts at both ends of the external rotor motor 3121 are aligned with the center of the input end of the P-type tube 311. A fixing bracket 315 is provided on the side wall of the support ring 313 located on the outer periphery of the mounting bracket 314. The two fixing brackets 315 are symmetrically arranged. The end of the fixing bracket 315 away from the P-type tube 311 is fixedly connected to the front inner wall of the purification box 3. Furthermore, such as Figure 12 As shown, the mounting bracket 314 and the support ring 313 are fixed together by bolts. At least two positioning holes 3111 are provided around the center of the input end on the outer side wall of the P-type tube 311. The included angle between two adjacent positioning holes 3111 is ≤90°. The positioning holes 3111 are used for bolts to pass through in order to fix the P-type tube 311. Specifically, before installing the entire unit, loosen the bolts that sequentially connect the mounting bracket 314, support ring 313, and positioning hole 3111 until the connection between the bolts and the positioning hole 3111 is completely released. Then, rotate the output end of the P-tube 311 to the direction of the air outlet 13 to be connected (when connecting the air outlet 13 on the rear side of the housing 1, rotate the output end of the P-tube 311 to the rear side wall of the housing 1; when connecting the air outlet 13 at the top of the housing 1, rotate the output end of the P-tube 311 to the top of the housing 1). Ensure that at least one positioning hole 31111 on the outer side wall of the P-tube 311 is aligned with the bolts that fix the mounting bracket 314 and support ring 313. Then, retighten the connection between the bolts and the positioning hole 3111 to complete the orientation positioning of the output end of the P-tube 311. Then, stretch the output end of the corrugated pipe 316 to connect with the input end of the air duct 15 / the input end of the air outlet 13 at the top of the housing 1 and fix it. It should be noted that the top of the purification chamber 3 is a removable panel.

[0034] Furthermore, such as Figure 5 , 8 As shown, in order to guide the oily air at the bottom of the unit, the top of the groove 11 between the oil storage tank 42 and the purification box 3 is inclined downward from front to back, and the top of the groove 11 between the fresh air outlet b23 and the purification box 3 is inclined downward from back to front. The baffle plate 6 is parallel to the top of the corresponding groove 11, and the front end of the baffle plate 6 is fixed to the top of the inner wall of the groove 11 through the connecting bracket 62. When the chef is cooking, the oily air rises and enters the groove 11. When the oily air comes into contact with the top of the inner wall of the front groove 11 and the bottom of the baffle plate 6, it gathers towards the input end of the air intake channel 7 and is drawn in by the air intake channel 7.

[0035] Furthermore, such as Figure 6 , 9 As shown, due to the law of conservation of fluid flow caused by the volume of static pressure space 41 being greater than that of air inlet channel 7, the flow rate of oily air in static pressure space 41 slows down, while the flow rate of oily air at the input end of air inlet channel 7 is faster, but the distance between it and air inlet 411 is large, which easily leads to a large pressure in static pressure space 41, thereby increasing the exhaust resistance of the whole machine. To address this, N uniformly arranged air guide grooves 63 and oil guide protrusions 64 are integrally hydraulically formed at the bottom end of baffle plate 6 and the bottom end of inner wall. The top of oil guide protrusion 64 is concentrically provided with air inlet 65. When the exhaust resistance increases and the exhaust velocity decreases, the partial negative pressure inside air inlet channel 7 acts on air inlet 65, and some oily air is directly drawn in by air inlet 65 for air replenishment. This process shortens the path length of oily air entering static pressure space 41, so as to ensure the exhaust velocity. Meanwhile, due to the setting of the air guide 63, the oily air drawn in by the air supply port 65 is guided to the air supply port 65 by the inner wall of the air guide 63. At the same time, the oil guide protrusion 64, which is integrally hydraulically formed, guides the oil and water at the bottom of the inner wall of the baffle plate 6 to the oil drain hole a61. The oil and water flow along the outer periphery of the oil guide protrusion 64 and continue to flow to the oil drain hole a61, thereby preventing the oil and water from dripping into the stove / the food being cooked through the air supply port 65.

[0036] Furthermore, such as Figure 2 , 4 As shown in Figures 5, 7, and 8, for ease of maintenance, inspection ports a, b, c9, 91, and 92 are respectively provided on the front wall of the fresh air housing 2 and on the front side of the purification housing 3 located at the purification unit 32 and the fan unit 31. Inspection doors a, b93, and 94 are respectively provided on the front side of inspection ports a, b9, and 91, covering the corresponding inspection ports. Inspection doors a, b93, and 94 are respectively designed to flip upwards and downwards, and are fixed by hinges and latches. (The top of the inspection door a93 is hinged to the upper part of the front side wall of the housing 1, and the bottom is fixed to the lower part of the front side wall of the housing 1 by a locking fastener; the bottom of the inspection door b94 is hinged to the lower part of the rear inner side wall of the fresh air box 2, and the top of the inspection door b94 is fixed to the upper part of the rear inner side wall of the fresh air box 2 by a locking fastener), the fresh air outlet a22 is provided on the inspection door a9, and the front of the inspection port c92 is covered by a removable cover plate 95 (the cover plate 95 is fixed to the rear inner side wall of the fresh air box 2 by multiple bolts). Preferably, two metal pneumatic / hydraulic support rods 931 are symmetrically arranged on the inner side wall of the fresh air box 2; Specifically, when the fresh air housing 2 / fan unit 31 / purification unit 32 requires maintenance: When inspecting the fresh air box 2, release the lock between the inspection door a93 and the housing 1, and flip the inspection door a93 upwards. The telescopic end of the metal pneumatic / hydraulic support rod 931 will extend as the inspection door a93 is flipped upwards until the inspection door a93 is fully open (the inspection door a93 and the front side wall of the housing 1 form a 90° angle). Then the fresh air box 2 can be inspected. When the fan unit 31 is under maintenance, after the maintenance door a93 is opened, the cover plate 95 is removed from the inner wall of the fresh air box 2, and the fan unit 31 can be maintained. When the purification unit 32 needs maintenance, with the maintenance door a93 open, release the latches securing the maintenance door b94 to the inner rear wall of the fresh air box 2, then fold down the maintenance door b94 until it is fully open (the maintenance door b94 and the inner rear wall of the fresh air box 2 form a 90° angle), and then perform maintenance on the purification unit 32.

[0037] Preferably, a lighting lamp 10, which is signal-connected to the operation panel 8, is embedded in the front side of the top end of the inner wall of the groove 11.

[0038] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated ultra-thin fume hood purification device, characterized in that, The housing (1) includes a recessed (11) bottom end, and the housing (1) is divided into a fresh air box (2), a purification box (3) and a static pressure box (4) from front to back by two partitions. The purification box (3) is equipped with a fan unit (31) that generates negative pressure. Two purification units (32) are symmetrically installed in the purification box (3) located on the two input ends of the fan unit (31). A channel (33) connecting the static pressure space (41) and the purification box (3) is provided on the partition on the input end side of the purification unit (32). The static pressure box (4) includes a static pressure space (41) and an oil storage tank (42) connected from top to bottom. The top of the groove (11) between the oil storage tank (42) and the purification box (3) is provided with N air inlets (411). An oil slinger (412) is embedded in the air inlet (411). An installation groove (5) is provided on the rear side wall of the groove (11). N baffles (6) are inserted into the installation groove (5). An air intake channel (7) is formed between the baffles (6) and the groove (11). N oil drain holes a (61) are provided at the insertion end of the baffles (6). N oil drain holes b (51) are provided on the inner wall of the installation groove (5). The oil drain holes a (61) and oil drain holes b (51) of the baffles (6) correspond one-to-one. An oil drain interface (12) connected to the oil storage tank (42) is provided at the bottom of the shell (1). The housing (1) is provided with an operation panel (8), which controls the fresh air box (2) to make up the air and connects the fresh air box (2), the fan unit (31), the purification unit (32), and the oil slinger (412). The housing (1) is provided with an air outlet (13) for the fan unit (31) to discharge oily smoke.

2. The integrated ultra-thin fume hood purification device according to claim 1, characterized in that: The top of the fresh air box (2) is provided with a fresh air inlet (21) that connects to the external air supply unit, and the front outer wall of the fresh air box (2) is provided with a fresh air outlet a (22), which is composed of N fresh air outlet holes a.

3. The integrated ultra-thin fume hood purification device according to claim 2, characterized in that: The bottom of the fresh air box (2) is provided with N fresh air outlets b (23), and the fresh air outlets b (23) are composed of N fresh air outlet holes b.

4. The integrated ultra-thin fume hood purification device according to claim 3, characterized in that: The bottom of the inner wall of the fresh air box (2) is provided with a number of sealing plates (24) equal to the number of fresh air outlets b (23). The sealing plates (24) cover the fresh air outlets b (23) at the corresponding positions. The sealing plates (24) are provided with a number of fresh air outlet holes c equal to the number of fresh air outlet holes b at the corresponding positions of the fresh air outlets b (23). The sealing plates (24) are symmetrically provided with two levers (241) that penetrate through and extend out of the bottom of the housing (1). The bottom of the housing (1) is provided with a limiting groove (14) for the levers (241) to slide left and right.

5. The integrated ultra-thin fume hood purification device according to claim 3, characterized in that: There are two air outlets (13). One air outlet (13) is located at the top of the housing (1) where the fan unit (31) is installed, and the other air outlet (13) is located on the outer wall of the rear side of the housing (1) and is connected to the inner wall of the purification box (3) through the air duct (15). The output end of the fan unit (31) can be turned to either air outlet (13) and fixedly connected.

6. The integrated ultra-thin fume hood purification device according to claim 5, characterized in that: The fan unit (31) includes a P-type tube (311), a double-inlet centrifugal fan (312) disposed in the P-type tube (311), and support rings (313) symmetrically disposed on both sides of the P-type tube (311). A retractable corrugated pipe (316) is installed at the output end of the P-type tube (311). The output end of the corrugated pipe (316) is fixedly connected to any air outlet (13) by multiple screws. The double-inlet centrifugal fan (312) includes an external rotor motor (3121) and two centrifugal fan cylinders (3122). A transmission ring (3123) is fixedly disposed in the middle of the outer wall of the rotor cylinder of the external rotor motor (3121). The two centrifugal fan cylinders (3122) are symmetrically installed on both sides of the transmission ring (3123) and connected by transmission. The support ring (313) has a protruding ring (3131) extending from the side wall near the P-type tube (311). The protruding ring (3131) is embedded and rotatably connected to the input end of the P-type tube (311). The support ring (313) is provided with a mounting bracket (314) on the side wall away from the P-type tube (311). The stator shafts at both ends of the external rotor motor (3121) are fixedly connected to the middle of the two mounting brackets (314). The center of the stator shafts at both ends of the external rotor motor (3121) is aligned with the center of the input end of the P-type tube (311). A fixing bracket (315) is provided on the side wall of the support ring (313) located on the outer periphery of the mounting bracket (314). The two fixing brackets (315) are symmetrically arranged. The end of the fixing bracket (315) away from the P-type tube (311) is fixedly connected to the front inner wall of the purification box (3).

7. The integrated ultra-thin fume hood purification device according to claim 6, characterized in that: The mounting bracket (314) and the support ring (313) are fixed together by bolts. At least two positioning holes (3111) are arranged around the center of the input end on the outer side wall of the P-type tube (311). The included angle between two adjacent positioning holes (3111) is ≤90°. The positioning holes (3111) are used for bolts to pass through in order to fix the P-type tube (311).

8. An integrated ultra-thin fume hood purification device according to any one of claims 1-7, characterized in that: The top of the groove (11) located between the oil storage tank (42) and the purification box (3) is inclined downward from front to back. The top of the groove (11) located between the fresh air outlet b (23) and the purification box (3) is inclined downward from back to front. The baffle plate (6) is parallel to the top of the groove (11) at the corresponding position. The front end of the baffle plate (6) is fixed to the top of the inner wall of the groove (11) through the connecting frame (62).

9. The integrated ultra-thin fume hood purification device according to claim 8, characterized in that: The bottom end of the barrier plate (6) and the bottom end of the inner wall are integrally hydraulically formed with N air guide grooves (63) and oil guide bosses (64), and the top of the oil guide bosses (64) are concentrically provided with air supply ports (65).

10. An integrated ultra-thin fume hood purification device according to any one of claims 1-7, characterized in that: Inspection ports a, b, c (9, 91, 92) are respectively provided on the front side wall of the fresh air box (2) and on the front side of the purification box (3) located at the purification unit (32) and the fan unit (31). Inspection doors a, b (93, 94) covering the corresponding inspection ports are respectively provided on the front side of the inspection ports a and b (9, 91). The inspection doors a and b (93, 94) are respectively up-folding and down-folding. The inspection doors a and b (93, 94) are fixed by hinges and latches. The fresh air outlet a (22) is located on the inspection door a (9). The front side of the inspection port c (92) is covered by a detachable cover plate (95).

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