Ceiling range hood system and distributed oil smoke suction method

Abstract

The invention relates to the field of kitchen utensils, and particularly discloses a ceiling range hood system and a distributed oil fume suction method, the system comprises a top plate, a fan assembly mounted on the top plate and an air inlet channel; a plurality of air inlet holes are formed in the top plate, the air inlet channel is arranged above the top plate, an air inlet of the air inlet channel is formed in the air inlet holes, and an air outlet of the air inlet channel communicates with the fan assembly; the ceiling range hood system further comprises a plurality of detection units, a valve assembly and a control unit. The detection unit is arranged corresponding to each air inlet hole and is used for detecting the quality of air near the air inlet holes; the valve assembly is used for opening and closing communication between the air inlet channel and the fan assembly; the control unit controls opening and closing of the valve assembly according to the detection result of the detection unit. According to the suspended ceiling range hood system, escaped oil smoke can be discharged out of the current space by opening the valve assembly and utilizing the air inlet holes formed in the top plate.

Description

Technical Field

[0001] The invention relates to the field of kitchen appliances, and in particular to a ceiling range hood system and a decentralized range hood extraction method. Background Art

[0002] Oil fume pollutants are produced during cooking in the kitchen. Most of them can be discharged by using a range hood, but a small part will float in the kitchen.

[0003] Although increasing the exhaust volume of the range hood can further control the escape of oil fume pollutants, it produces huge noise (aerodynamic noise and vibration).

[0004] The negative pressure of the range hood can only control the oil fume within a certain range of its inlet. Once the rising speed of the oil fume exceeds the control range during cooking, the oil fume pollutants will be out of control, escape, and remain in the kitchen. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defect that the oil smoke escaping from the suction range of the range hood in the prior art kitchen cannot be discharged, and to provide a ceiling range hood system and a decentralized oil smoke suction method.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A ceiling range hood system, comprising: a top plate, a fan assembly mounted on the top plate, and an air inlet channel;

[0008] The top plate is provided with a plurality of air inlet holes, the air inlet channel is provided above the top plate, the air inlet of the air inlet channel is provided at the air inlet hole, and the air outlet of the air inlet channel is connected to the fan assembly;

[0009] The ceiling range hood system also includes a plurality of detection units, a valve assembly and a control unit;

[0010] The detection unit is provided corresponding to each of the air inlets, and is used to detect the air quality near the air inlet;

[0011] The valve assembly is used to open and close the communication between the air inlet channel and the fan assembly;

[0012] The control unit controls the opening and closing of the valve assembly according to the detection result of the detection unit.

[0013] In this solution, the ceiling range hood system opens an air inlet hole on the top plate, detects the air quality near the air inlet hole, and determines whether there is any escaping oil smoke. When escaping oil smoke is detected, the valve assembly can be opened to use the air inlet hole on the top plate to discharge the escaped oil smoke out of the current space.

[0014] Preferably, the detection unit is arranged at a corner of the air inlet and an end of the detection unit is flush with the air inlet.

[0015] In this solution, the detection unit is arranged at a corner of the air inlet and is flush with the air inlet, which can minimize the damage to the appearance of the top plate. When the air inlet is blocked by a baffle, the detection unit can also minimize the impact on the opening and closing of the baffle.

[0016] Preferably, the ceiling range hood system further comprises a plurality of baffles, which are arranged at the air inlet holes and used to open and close the air inlet holes;

[0017] When the detection unit detects that the oil smoke concentration is higher than a predetermined threshold, the control unit controls the valve assembly to open and controls the baffle that opens and closes the air inlet corresponding to the detection unit to open.

[0018] In this solution, by opening only the air inlets where oil smoke is detected nearby, the escaped oil smoke can be discharged in a targeted manner, and the oil smoke is not likely to move due to simultaneous suction from multiple air inlets, causing secondary pollution of the ceiling.

[0019] Preferably, the baffle is translated relative to the air inlet hole by an electric push rod so as to open and close the air inlet hole;

[0020] The control unit is electrically connected to the electric push rod.

[0021] In this solution, the baffle can be conveniently controlled and pushed by an electric push rod.

[0022] Preferably, the fan assembly comprises a fan and a ventilation joint arranged above the fan;

[0023] The ventilation joint comprises a ventilation chamber and a plurality of ventilation sub-ports connected to the ventilation chamber, the ventilation chamber is connected to the fan, and each of the ventilation sub-ports is connected to one of the air inlet channels;

[0024] The valve assembly is arranged between the ventilation joint and the fan.

[0025] In this solution, the component for sucking escaped oil smoke is arranged above the fan, and is separated from the main air inlet of the fan component arranged below the fan, so as to avoid affecting the normal suction function of the fan component during suction.

[0026] Preferably, the plurality of air inlet holes are evenly distributed on the top plate.

[0027] In this solution, by evenly arranging the air inlet holes, it can be ensured that all the escaping oil smoke floating near the top plate can be sucked away.

[0028] Preferably, the valve assembly comprises a mounting plate, an opening and closing plate and a driving device;

[0029] The mounting plate is arranged on the passage between the ventilation joint and the fan, a vent is arranged on the mounting plate, and the driving device is used to drive the opening and closing plate to slide relative to the mounting plate to open and close the vent;

[0030] The control unit is electrically connected to the driving device.

[0031] Preferably, the driving device comprises a gear and a rack, the rack is arranged on the opening and closing plate, the gear is fixed relative to the mounting plate, and a guide rail is further arranged on the mounting plate, and the opening and closing plate slides along the guide rail.

[0032] In this solution, since the suction force of the fan assembly is very strong, and the transmission structure of the gear rack is relatively stable and forms a large driving force, it is convenient to drive the opening and closing plate.

[0033] Preferably, a sealing strip is provided around the vent.

[0034] In this solution, the vents can be sealed by providing sealing strips to avoid interference with the normal oil suction of the fan assembly when there is no need to extract escaping oil smoke. At the same time, gaps in the vents can be avoided, which would cause vibration and noise in the fan assembly.

[0035] Preferably, the ventilation joint comprises a disc-shaped protrusion, the ventilation chamber is formed in the protrusion, and the ventilation port is formed on the outer peripheral surface of the protrusion.

[0036] A decentralized oil fume extraction method, the decentralized oil fume extraction method using the ceiling range hood system as described above;

[0037] Wherein, the ceiling range hood system further comprises a plurality of baffles, which are arranged at the air inlet holes and used to open and close the air inlet holes;

[0038] The decentralized oil fume extraction method comprises the following steps:

[0039] When the fan assembly is not turned on, the baffle closes the air inlet hole;

[0040] When the fan assembly is turned on,

[0041] When the detection unit detects that the oil smoke concentration is higher than a predetermined threshold, the control unit controls the valve assembly to open and controls the baffle of the air inlet corresponding to the detection unit to open, and the other baffles remain closed.

[0042] In this solution, by opening only the air inlets where oil smoke is detected nearby, the escaped oil smoke can be discharged in a targeted manner, and the oil smoke is not likely to move due to simultaneous suction from multiple air inlets, causing secondary pollution of the ceiling.

[0043] The positive progressive effect of the present invention is that the ceiling range hood system opens an air inlet hole on the top plate, detects the air quality near the air inlet hole, and determines whether there is any escaping oil smoke. When escaping oil smoke is detected, the valve assembly can be opened to use the air inlet hole opened on the top plate to discharge this part of the escaped oil smoke out of the current space. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of the three-dimensional structure of a ceiling range hood system according to an embodiment of the present invention.

[0045] Figure 2 Schematic diagram of the front structure of a ceiling range hood system according to an embodiment of the present invention.

[0046] Figure 3 It is a schematic diagram of the three-dimensional structure of a top plate according to an embodiment of the present invention.

[0047] Figure 4 Schematic diagram of the structure of the air inlet according to an embodiment of the present invention.

[0048] Figure 5 The figure is a schematic diagram of the installation structure of a fan assembly according to an embodiment of the present invention.

[0049] Figure 6 Schematic diagram of the internal structure of a fan assembly according to an embodiment of the present invention.

[0050] Figure 7 Schematic diagram of the three-dimensional structure of a ventilation joint according to an embodiment of the present invention.

[0051] Figure 8 Schematic diagram of the three-dimensional structure of a valve assembly according to an embodiment of the present invention.

[0052] Fig. 9 Schematic diagram of a module of a ceiling range hood system according to an embodiment of the present invention.

[0053] Description of reference numerals:

[0054] Use space 100

[0055] Ceiling 101

[0056] Ceiling range hood system 200

[0057] Top plate 210

[0058] Air inlet 211

[0059] Baffle 212

[0060] Detection unit 213

[0061] Electric linear actuator 214

[0062] Fan assembly 220

[0063] Fan 221

[0064] Main air intake 222

[0065] Exhaust duct 223

[0066] Air inlet channel 230

[0067] Ventilation connector 240

[0068] Ventilation chamber 241

[0069] Ventilation outlet 242

[0070] Valve assembly 250

[0071] Mounting plate 251

[0072] Vent 252

[0073] Opening and closing plate 253

[0074] Drive device 254

[0075] Gear 2541

[0076] Rack 2542

[0077] Guide Rail 256

[0078] Sealing strip 257

[0079] Control unit 260

[0080] First bracket 271

[0081] Second bracket 272

[0082] Connecting column 273 DETAILED DESCRIPTION

[0083] The present invention is further described below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0084] Figure 1 FIG. 2 is a schematic diagram of a three-dimensional structure of a ceiling range hood system 200 according to an embodiment of the present invention. Figure 1, a ceiling range hood system 200 is shown installed in a certain use space 100, such as a kitchen. Generally speaking, the use space 100 is a kitchen, but the present invention is not limited thereto, and the use space 100 may also be other spaces or rooms with smoke exhaust requirements.

[0085] like Figure 1-2 As shown, the ceiling range hood system 200 includes: a top plate 210 , a fan 221 assembly 220 installed on the top plate 210 , and an air inlet channel 230 .

[0086] The fan 221 assembly 220 includes a fan 221 located inside and a main air inlet 222 located below. A gas stove or the like is generally arranged below the main air inlet 222, and the main oil smoke generated by the gas stove is discharged to the outside of the use space 100 through the main air inlet 222. An exhaust passage 223 is arranged next to the fan 221, and the oil smoke is sucked by the fan 221 and discharged to the outside through the exhaust passage 223.

[0087] There is a gap between the top plate 210 and the ceiling 101 of the use space 100, and the part of the fan 221 assembly 220 where the fan 221 is installed is arranged in the gap, so that the noise generated by the fan 221 can be appropriately reduced.

[0088] A plurality of air inlet holes 211 are arranged on the top plate 210, an air inlet channel 230 is arranged above the top plate 210, an air inlet of the air inlet channel 230 is arranged at the air inlet hole 211, and an air outlet of the air inlet channel 230 is connected to the fan 221 assembly 220; the ceiling range hood system 200 also includes a plurality of detection units 213, a valve assembly 250 and a control unit 260; the detection unit 213 is arranged corresponding to each air inlet hole 211, and is used to detect the air quality near the air inlet hole 211; the valve assembly 250 is used to open and close the connection between the air inlet channel 230 and the fan 221 assembly 220; the control unit 260 controls the opening and closing of the valve assembly 250 according to the detection result of the detection unit 213.

[0089] The ceiling range hood system 200 opens an air inlet hole 211 on the top plate 210, detects the air quality near the air inlet hole 211, and determines whether there is any escaping oil smoke. When escaping oil smoke is detected, the valve assembly 250 can be opened to use the air inlet hole 211 opened on the top plate 210 to discharge the escaped oil smoke out of the current space.

[0090] like Figure 3 As shown, a plurality of air inlet holes 211 are evenly distributed on the top plate 210. By evenly arranging the air inlet holes 211, it can be ensured that all the escaping oil smoke floating near the top plate 210 can be sucked away.

[0091] exist Figure 3In the embodiment, a plurality of air inlet holes 211 are diffusely distributed from the center of the top plate 210 toward the edge.

[0092] Of course, those skilled in the art may also, as needed, relatively densely arrange the air inlet holes 211 at several points where the escaping oil smoke is likely to gather, and relatively sparsely arrange the air inlet holes 211 at points where the escaping oil smoke is not likely to gather.

[0093] In this embodiment, the air inlet channel 230 is in the form of a hose, and the figure only shows one air inlet channel 230. However, in actual application, each air inlet hole 211 is connected to an air inlet channel 230.

[0094] like Figure 4 As shown, the air inlet of the air inlet channel 230 is trumpet-shaped and directly faces the air inlet hole 211 . The air inlet is located above the air inlet hole 211 and has a certain gap with the baffle 212 described below in the vertical direction to avoid hindering the movement of the baffle 212 .

[0095] In this embodiment, taking the use space 100 as a kitchen as an example, the detection unit 213 is a probe for detecting the concentration of oil smoke. The probe is inserted into the top plate 210 near the air inlet 211 and penetrates the top plate 210 downwards, so that when the air inlet 211 is closed, the concentration of oil smoke near the air inlet 211 corresponding to the probe under the top plate 210 can be detected.

[0096] In other embodiments, the detection unit 213 may be disposed at a corner of the air inlet hole 211 and an end of the detection unit 213 may be flush with the air inlet hole 211 .

[0097] The detection unit 213 is arranged at a corner of the air inlet 211 and flush with the air inlet 211, which can minimize the damage to the appearance of the top plate 210. When the air inlet 211 is blocked by the baffle 212, the detection unit 213 can also minimize the impact on the opening and closing of the baffle 212. The baffle 212 can leave a gap corresponding to the position of the detection unit 213.

[0098] The ceiling range hood system 200 further includes a plurality of baffles 212 , which are disposed at the air inlet holes 211 and are used to open and close the air inlet holes 211 .

[0099] When the detection unit 213 detects that the oil smoke concentration is higher than a predetermined threshold, the control unit 260 controls the valve assembly 250 to open and controls the baffle 212 that opens and closes the air inlet hole 211 corresponding to the detection unit 213 to open.

[0100] By opening only the air inlet holes 211 where oil smoke is detected nearby, the escaped oil smoke can be discharged in a targeted manner, and the oil smoke is not easily moved due to simultaneous suction from multiple air inlet holes 211, resulting in secondary pollution of the top plate 210.

[0101] like Figure 4 As shown, the baffle 212 is translated relative to the air inlet 211 by the electric push rod 214 to open and close the air inlet 211; the control unit 260 is electrically connected to the electric push rod 214. The control unit 260 can be connected to the electric push rod 214 by wire or wirelessly.

[0102] The baffle 212 can be conveniently controlled and pushed by the electric push rod 214 .

[0103] like Figure 5-8 As shown, the fan 221 assembly 220 includes a fan 221 and a ventilation connector 240 arranged above the fan 221; the ventilation connector 240 includes a ventilation chamber 241 and a plurality of ventilation branches 242 connected to the ventilation chamber 241, the ventilation chamber 241 is connected to the fan 221, and each ventilation branch 242 is connected to an air inlet channel 230; a valve assembly 250 is provided between the ventilation connector 240 and the fan 221.

[0104] The component for sucking escaped oil smoke is arranged above the fan 221, and is separated from the main air inlet 222 of the fan 221 component 220 arranged below the fan 221, so as to avoid affecting the normal suction function of the fan 221 component 220 during suction.

[0105] The valve assembly 250 includes a mounting plate 251, an opening and closing plate 253 and a driving device 254; the mounting plate 251 is arranged on the passage between the ventilation joint 240 and the fan 221, and a vent 252 is arranged on the mounting plate 251. The driving device 254 is used to drive the opening and closing plate 253 to slide relative to the mounting plate 251 to open and close the vent 252; the control unit 260 is electrically connected to the driving device 254.

[0106] Guide rails 256 are provided on both sides of the opening and closing plate 253 . The guide rails 256 are fixed to the mounting plate 251 . The guide rails 256 are used to guide the opening and closing plate 253 to slide linearly along the guide rails 256 to open and close the vent 252 .

[0107] The driving device 254 includes a gear 2541 and a rack 2542 . The rack 2542 is disposed on the opening and closing plate 253 . The gear 2541 is fixed relative to the mounting plate 251 . The mounting plate 251 is further provided with a guide rail 256 . The opening and closing plate 253 slides along the guide rail 256 .

[0108] Since the suction force of the fan 221 assembly 220 is very strong, and the transmission structure of the gear 2541 and the rack 2542 is relatively stable and forms a large driving force, it is convenient to drive the opening and closing plate 253.

[0109] Alternatively, other forms of driving devices 254 may be rotated as needed.

[0110] A sealing strip 257 is provided around the vent 252. By providing the sealing strip 257, the vent 252 can be sealed, and when there is no need to suck the escaping oil smoke, it is avoided to interfere with the normal oil suction of the fan 221 assembly 220, and at the same time, it is avoided that there is a gap in the vent 252, which causes vibration and noise in the fan 221 assembly 220.

[0111] The ventilation joint 240 includes a disc-shaped protrusion, a ventilation chamber 241 is formed in the protrusion, and a ventilation branch port 242 is formed on the outer peripheral surface of the protrusion.

[0112] like Figure 5 As shown, a first bracket 271 and a second bracket 272 are also provided above the top plate 210, and the fan 221 is connected to the ceiling 101 through the first bracket 271 and the second bracket 272. The first bracket 271 is first fixedly connected to the ceiling 101, and the second bracket 272 is fixedly connected to the fan 221. Finally, the fan 221 is connected to the second bracket 272 through the connecting column 273 on the first bracket 271. The connecting column 273 is provided with a connecting spring to maintain a certain damping, and the sagging position can be fine-tuned, which simplifies the centering requirements during installation. When the fan 221 is working, the spring can absorb a certain vibration capacity, so that the vibration transmitted to the ceiling 101 and the wall is greatly reduced.

[0113] like Fig. 9 As shown, the control unit 260 is electrically connected to the electric push rod 214 for driving the baffle 212 to slide, the detection unit 213 for detecting the air quality near the ventilation hole, and the driving device 254 for driving the opening and closing plate 253 to slide.

[0114] This embodiment also provides a decentralized oil fume extraction method, which uses the above-mentioned ceiling range hood system 200.

[0115] The decentralized fume extraction method comprises the following steps:

[0116] When the fan 221 assembly 220 is not turned on, the range hood is not started, and the baffle 212 closes the air inlet 211, thus ensuring the integrity of the top plate 210 in a normal state;

[0117] When the fan 221 assembly 220 is turned on, at this time, the range hood is started, the main air inlet 222 starts to take in oil smoke, and the detection unit 213 also starts to detect and send the detection result to the control unit 260.

[0118] When the detection unit 213 detects that the oil smoke concentration is higher than the predetermined threshold, the control unit 260 controls the valve assembly 250 to open and controls the baffle 212 of the air inlet 211 corresponding to the detection unit 213 to open, and the other baffles 212 remain closed. At this time, the multiple detection units 213 can be classified, and the detection unit 213 that detects that the oil smoke concentration is higher than the predetermined threshold is classified as an A unit, and the detection unit 213 that detects that the oil smoke concentration is not higher than the predetermined threshold is classified as a B unit. The baffle 212 corresponding to the B unit remains closed, and the baffle 212 corresponding to the A unit is opened. The detection unit 213 set next to each ventilation hole and the baffle 212 covered by the ventilation hole are in a one-to-one correspondence.

[0119] By opening only the air inlet holes 211 where oil smoke is detected nearby, the escaped oil smoke can be discharged in a targeted manner, and the oil smoke is not easily moved due to simultaneous suction from multiple air inlet holes 211, resulting in secondary pollution of the top plate 210.

[0120] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship of the device or element in normal use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation at any time, and therefore cannot be understood as a limitation of the present invention in this regard.

[0121] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A ceiling range hood system, characterized in that: It includes: A top plate, a fan assembly mounted on the top plate, and an air inlet channel; The top plate is provided with a plurality of air inlet holes, the air inlet channel is provided above the top plate, the air inlet of the air inlet channel is provided at the air inlet hole, and the air outlet of the air inlet channel is connected to the fan assembly; The ceiling range hood system also includes a plurality of detection units, a valve assembly and a control unit; The detection unit is provided corresponding to each of the air inlets, and is used to detect the air quality near the air inlet; The valve assembly is used to open and close the communication between the air inlet channel and the fan assembly; The control unit controls the opening and closing of the valve assembly according to the detection result of the detection unit.

2. The ceiling range hood system according to claim 1, characterized in that: The detection unit is arranged at a corner of the air inlet and an end of the detection unit is flush with the air inlet.

3. The ceiling range hood system according to claim 1, characterized in that: The ceiling range hood system further comprises a plurality of baffles, which are arranged at the air inlet holes and used to open and close the air inlet holes; When the detection unit detects that the oil smoke concentration is higher than a predetermined threshold, the control unit controls the valve assembly to open and controls the baffle that opens and closes the air inlet corresponding to the detection unit to open.

4. The ceiling range hood system according to claim 3, characterized in that: The baffle is translated relative to the air inlet through an electric push rod to open and close the air inlet; The control unit is electrically connected to the electric push rod.

5. The ceiling range hood system according to claim 1, characterized in that: The fan assembly includes a fan and a ventilation joint arranged above the fan; The ventilation joint comprises a ventilation chamber and a plurality of ventilation sub-ports connected to the ventilation chamber, the ventilation chamber is connected to the fan, and each of the ventilation sub-ports is connected to one of the air inlet channels; The valve assembly is arranged between the ventilation joint and the fan.

6. The ceiling range hood system according to claim 1, characterized in that: The plurality of air inlet holes are evenly distributed on the top plate.

7. The ceiling range hood system according to claim 5, characterized in that: The valve assembly includes a mounting plate, an opening and closing plate, and a driving device; The mounting plate is arranged on the passage between the ventilation joint and the fan, a vent is arranged on the mounting plate, and the driving device is used to drive the opening and closing plate to slide relative to the mounting plate to open and close the vent; The control unit is electrically connected to the driving device.

8. The ceiling range hood system according to claim 7, characterized in that: The driving device comprises a gear and a rack, the rack is arranged on the opening and closing plate, the gear is fixed relative to the mounting plate, the mounting plate is also provided with a guide rail, and the opening and closing plate slides along the guide rail; Preferably, a sealing strip is provided around the vent.

9. The ceiling range hood system according to claim 5, characterized in that: The ventilation joint includes a disc-shaped protrusion, the ventilation chamber is formed in the protrusion, and the ventilation port is formed on the outer peripheral surface of the protrusion.

10. A decentralized oil fume extraction method, characterized in that: The decentralized fume extraction method uses a ceiling range hood system as described in any one of claims 1 to 9; Wherein, the ceiling range hood system further comprises a plurality of baffles, which are arranged at the air inlet holes and used to open and close the air inlet holes; The decentralized oil fume extraction method comprises the following steps: When the fan assembly is not turned on, the baffle closes the air inlet hole; When the fan assembly is turned on, When the detection unit detects that the oil smoke concentration is higher than a predetermined threshold, the control unit controls the valve assembly to open and controls the baffle of the air inlet corresponding to the detection unit to open, and the other baffles remain closed.

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