Kitchen smoke exhaust system and building
By designing the air replenishment unit, smoke exhaust unit and maintenance port in the kitchen smoke exhaust system, the problem of eliminating the negative pressure state in the prior art requires a large amount of transformation, and a low-cost and convenient elimination of the negative pressure state is achieved.
Patent Information
- Application Number
- CN202323332430.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-06
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2033-12-06
AI Technical Summary
The existing kitchen smoke exhaust system requires a lot of renovations when eliminating the negative pressure state of the kitchen, resulting in wasting time and cost.
By designing a kitchen smoke exhaust system, including a ventilation unit, a smoking exhaust unit and an inspection port, the ventilation port and the exhaust port can be communicated with the inspection port respectively, achieving low-cost negative pressure state elimination.
The design connects the existing maintenance port with the air refill port to achieve low cost elimination of negative pressure in the kitchen, while providing convenient maintenance channels and reducing maintenance costs.
Smart Images
Figure CN222651406U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a kitchen smoke exhaust system and a building. Background Art
[0002] The existing kitchen includes a range hood, an exhaust valve and an exhaust pipe. The exhaust valve and the range hood are fixedly connected through the exhaust pipe. The exhaust valve is installed in the flue and communicates with the exhaust passage of the flue. As is known to all, the range hood controls the exhaust volume of the kitchen during operation. In winter, since the kitchen doors and windows are closed, the kitchen is usually in a negative pressure state when the range hood is working.
[0003] Those skilled in the art usually eliminate the negative pressure state in the kitchen through the following structures: 1. The invention patent with application number 2021108956155 discloses a first structure for eliminating the negative pressure state in the kitchen, wherein the kitchen includes an air supply duct, a smoke exhaust duct and a range hood, and the air supply duct and the smoke exhaust duct are respectively connected to the range hood; 2. The invention patent with application number 2017104670307 discloses a second structure for eliminating the negative pressure state in the kitchen, wherein the kitchen includes a first air inlet (the first air inlet is an air supply duct) and a nozzle connected to the first air inlet, and the nozzle is opened on the wall of the kitchen; 3. The invention patent with application number 202222875 discloses a second structure for eliminating the negative pressure state in the kitchen, wherein the kitchen includes a first air inlet (the first air inlet is an air supply duct) and a nozzle connected to the first air inlet, and the nozzle is opened on the wall of the kitchen; 0831 utility model patent discloses a third structure for eliminating negative pressure in the kitchen, wherein the kitchen includes a common air supply duct and an air supply fan, and the kitchen is provided with an air supply port connected to the common air supply duct; 4. Utility model patent with application number 201821713081X discloses a fourth structure for eliminating negative pressure in the kitchen, wherein the kitchen includes an air supply port opened under the wall, and the air supply port is provided with a filter; 5. Invention patent with application number 2017108425075 discloses a fifth structure for eliminating negative pressure in the kitchen, wherein the kitchen includes a common flue, and the common flue is divided into a smoke exhaust channel and an air supply channel.
[0004] According to the above five structures, it is not difficult to find that the existing structures to eliminate the negative pressure in the kitchen require additional modifications to the existing structure of the kitchen, such as: modification of the range hood, modification of the kitchen wall, addition of public air supply ducts, installation of filters, and modification of the flue. This means that "eliminating the negative pressure in the kitchen" requires a lot of modification time and money. Utility Model Content
[0005] The problem to be solved by the utility model is to provide a kitchen smoke exhaust system and a building, so as to eliminate the negative pressure state of the kitchen at a low cost.
[0006] In order to solve the above problems, the utility model provides the following technical solutions:
[0007] The kitchen exhaust system includes:
[0008] An air supply unit, the air supply unit comprising an air supply port opened on a side wall of the kitchen;
[0009] A smoke exhaust unit, the smoke exhaust unit comprising an exhaust valve arranged in the smoke duct, the exhaust valve comprising a valve body and a valve plate, the valve body is provided with an exhaust port, the valve plate is movably arranged on the valve body and used to open or close the exhaust port;
[0010] An inspection port is arranged on the ceiling, and the air supply port and the exhaust port can be respectively connected to the inspection port;
[0011] Wherein, the length dimension of the inspection opening is ≥150mm, and the width dimension of the inspection opening is ≥100mm.
[0012] In the utility model, the kitchen exhaust system includes an air supply port of an air supply unit, an exhaust valve and an inspection port of the exhaust unit, wherein the air supply port and the exhaust port can be connected to the inspection port respectively. When the air supply port and the exhaust port are connected to the inspection port respectively, the air supply port can supply air to the kitchen through the inspection port to eliminate the negative pressure state of the kitchen. With such a design, the existing inspection port is connected to the air supply port to eliminate the negative pressure state of the kitchen at a low cost.
[0013] In addition, when the air supply port and the exhaust port are respectively connected to the maintenance port, the maintenance personnel can inspect the air supply port and the exhaust valve through the maintenance port. The maintenance includes but is not limited to replacing the parts of the exhaust valve, cleaning the oil stains on the exhaust valve, and cleaning the garbage in the air supply port.
[0014] The head circumference of an adult is usually 500mm-600mm. When the length of the inspection port is ≥150mm and the width of the inspection port is ≥100mm, the circumference of the inspection port is ≥500mm. This design makes it convenient for maintenance personnel to put their heads into the maintenance space (the maintenance space is surrounded by the ceiling and the kitchen) to visually inspect the exhaust valve and the air supply port.
[0015] In the utility model, the suspended ceiling is arranged in the kitchen and encloses a maintenance space with the upper space of the kitchen, and the suspended ceiling is arranged in the kitchen and encloses a cooking space with the lower space of the kitchen.
[0016] It should be noted that: in the utility model, the air supply port and the exhaust port can be connected to the inspection port respectively, wherein, when the exhaust port is not connected to the inspection port, the range hood and the exhaust valve are connected through the exhaust pipe, and the oil smoke exhausted by the range hood enters the exhaust port through the exhaust pipe; when the exhaust port is connected to the inspection port, the exhaust pipe and the exhaust valve are separated.
[0017] Furthermore, the inspection port is provided with a movable cover plate, the cover plate is provided with an air supply channel, and the air supply port and the exhaust port can be connected to the air supply channel respectively. With such a design, the cover plate can hide the inspection port, and the cover plate can separate the maintenance space from the normal cooking space of the kitchen.
[0018] In the present invention, “the inspection opening is provided with a movable cover plate” means that the cover plate is not permanently fixed to the inspection opening, that is, the cover plate can be removed from the inspection opening.
[0019] In the utility model, the air supply port and the exhaust port can be connected to the air supply channel respectively, wherein, when the exhaust port is not connected to the air supply channel, the range hood is connected to the exhaust valve through the exhaust pipe, and the oil smoke exhausted by the range hood enters the exhaust port through the exhaust pipe; when the exhaust port is connected to the air supply channel, the exhaust pipe is separated from the exhaust valve.
[0020] Furthermore, the cover plate includes a cover body and an air supply device, the cover body is arranged on the inspection port, the air supply device is arranged on the cover body, and the air supply channel is arranged on the air supply device. With such a design, maintenance personnel can replace the air supply device by removing the cover plate.
[0021] Furthermore, the air supply device is detachably arranged on the cover body. With such a design, the air supply device can be replaced separately.
[0022] Furthermore, the air supply passage includes at least one of a downwardly inclined section, an upwardly inclined section, and a horizontal section. The downwardly inclined section is used to change the air supply direction to control the flow direction of natural wind supplying the kitchen; the upwardly inclined section is used to store condensed water to prevent condensed water from dripping on the floor of the kitchen; the upwardly inclined section and the horizontal section can reduce the probability of water vapor in the kitchen entering the air supply passage, so as to reduce the formation of condensed water after the water vapor in the kitchen cools in the air supply passage.
[0023] Furthermore, the air supply unit further includes an air supply pipe, and the air supply port and the air supply channel are connected through the air supply pipe. With such a design, the air supply unit provides a separate air supply path for the air supply channel through the air supply pipe, so as to reduce the probability of dust and foreign matter entering the air supply channel.
[0024] Furthermore, a windproof cap is provided at the end of the air supply pipe; and / or at least a part of the end of the air supply pipe extends to the outside of the kitchen through the air supply port.
[0025] Furthermore, the air supply pipe is a corrugated hose. With such a design, the air supply unit absorbs the vibration energy generated by the external power through the corrugated hose, so that the air supply unit can achieve the purpose of vibration reduction and noise reduction.
[0026] Furthermore, the inspection port is further provided with a frame, the frame is provided with an opening, the cover is provided on the frame and is used to open or close the opening; wherein the cover is magnetically connected to the frame; or, the cover is snap-connected to the frame; or, the cover is connected to the frame by a fastener; or, the cover is hinged to the frame. With such a design, the frame is used to protect the inspection port.
[0027] Furthermore, the inspection port is provided with a movable air conditioning device, the air conditioning device is provided with an air supply channel, the air supply port and the exhaust port can be communicated with the air supply channel respectively. In this design, the air conditioning device is used to change the temperature of the kitchen.
[0028] In the present invention, "the inspection opening is provided with a movable air conditioning device" means that the air conditioning device is not permanently fixed to the inspection opening, that is, the air conditioning device can be removed from the inspection opening.
[0029] Furthermore, the length of the inspection port is ≥200mm, and the width of the inspection port is ≥150mm. Since the head circumference of an adult is usually 500mm-600mm, when the length of the inspection port is ≥200mm and the width of the inspection port is ≥150mm, the circumference of the inspection port is ≥700mm. This design makes it convenient for most owners to put their heads into the maintenance space, so that the owners can visually inspect the exhaust valve and the air supply port.
[0030] Furthermore, the length dimension of the inspection port is ≥250mm, and the width dimension of the inspection port is ≥150mm. When the length dimension of the inspection port is ≥250mm, and the width dimension of the inspection port is ≥150mm, the circumference of the inspection port is ≥800mm. This design makes it convenient for most maintenance personnel to put their heads and hands into the maintenance space at the same time, so that the maintenance personnel can visually inspect the exhaust valve and the air supply port.
[0031] Furthermore, the length dimension of the inspection port is ≥300mm, and the width dimension of the inspection port is ≥300mm. When the length dimension of the inspection port is ≥300mm, and the width dimension of the inspection port is ≥300mm, the circumference of the inspection port is ≥1200mm. This design makes it convenient for most owners to put their heads and hands into the maintenance space at the same time, so that the owners can visually inspect the exhaust valve and the air supply port; in addition, some teenagers with a shoulder circumference of about 300mm can enter the maintenance space through the inspection port to perform on-site inspection of the exhaust valve and the air supply port.
[0032] Furthermore, the length of the inspection port is ≥350mm, and the width of the inspection port is ≥350mm. The shoulder width of an adult woman is usually 300mm-400mm. When the length of the inspection port is ≥350mm, and the width of the inspection port is ≥350mm, the circumference of the inspection port is ≥1400mm. This design makes it convenient for some adult women to enter the maintenance space through the inspection port to perform on-site maintenance of the exhaust valve and the air supply port.
[0033] Furthermore, the length of the inspection port is ≥400mm, and the width of the inspection port is ≥400mm. The shoulder width of an adult woman is usually 300mm-400mm, and the shoulder width of an adult man is usually 350mm-450mm; when the length of the inspection port is ≥400mm, and the width of the inspection port is ≥400mm, the circumference of the inspection port is ≥1600mm. This design makes it convenient for most adult women and some adult men to enter the maintenance space through the inspection port to perform on-site maintenance of the exhaust valve and the air supply port.
[0034] Furthermore, the length of the inspection port is ≥450mm, and the width of the inspection port is ≥450mm. The shoulder width of an adult man is usually 350mm-450mm; when the length of the inspection port is ≥450mm, and the width of the inspection port is ≥450mm, the circumference of the inspection port is ≥1800mm. This design makes it convenient for the owner to enter the maintenance space through the inspection port to perform on-site maintenance of the exhaust valve and the air supply port.
[0035] The building includes a flue and at least two kitchen units, wherein the flue is provided with a vertically arranged smoke exhaust passage, each kitchen unit includes a kitchen and a suspended ceiling, the suspended ceiling is arranged in the kitchen and forms a maintenance space with the kitchen, the flue is vertically arranged in the kitchen of each kitchen unit, when the flue is arranged in the kitchen of each kitchen unit, a mounting hole is arranged on the side wall of the flue located in the maintenance space of each kitchen unit, the building also includes a kitchen smoke exhaust system, the kitchen smoke exhaust system is the kitchen smoke exhaust system described above, the exhaust valve of the smoke exhaust unit is arranged on the mounting hole, the kitchen of each kitchen unit is provided with an air supply port of the air supply unit on the side wall of the corresponding maintenance space, and the inspection port is arranged on the suspended ceiling of each kitchen unit.
[0036] In the utility model, the ceiling physically separates the kitchen into a maintenance space and a cooking space, wherein the maintenance space can collect external objects to a certain extent, and the external objects refer to objects entering the kitchen through the air supply port. With such a design, the maintenance space will play a filtering role, so as to achieve low-cost elimination of the negative pressure state of the kitchen. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1It is a structural schematic diagram of some buildings in the preferred embodiment of the utility model. DETAILED DESCRIPTION
[0038] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.
[0039] See also Figure 1 , the kitchen exhaust system includes:
[0040] The air supply unit 1 includes an air supply port 11 provided on a side wall of the kitchen 101;
[0041] The smoke exhaust unit 2 includes an exhaust valve 21 disposed in the smoke duct 20. The exhaust valve 21 includes a valve body 211 and a valve plate 212. The valve body 211 is provided with an exhaust port (not marked). The valve plate 212 is movably disposed on the valve body 211 and is used to open or close the exhaust port.
[0042] The inspection port 3 is arranged on the ceiling 102, and the air supply port 11 and the exhaust port can be connected to the inspection port 3 respectively;
[0043] The length dimension of the inspection opening 3 is L, L≥150 mm, and the width dimension of the inspection opening 3 is W, W≥100 mm.
[0044] In the utility model, the kitchen exhaust system includes an air supply port 11 of an air supply unit 1, an exhaust valve 21 of an exhaust unit 2, and an inspection port 3, wherein the air supply port 11 and the exhaust port can be respectively connected to the inspection port 3. When the air supply port 11 and the exhaust port are respectively connected to the inspection port 3, the air supply port 11 supplies air to the cooking space 200 of the kitchen 101 through the inspection port 3 to eliminate the negative pressure state of the kitchen 101. In this structure, the existing inspection port 3 is connected to the air supply port 11 to eliminate the negative pressure state of the kitchen 101 at a low cost.
[0045] In addition, when the air supply port 11 and the exhaust port are respectively connected to the inspection port 3, the maintenance personnel can inspect the air supply port 11 and the exhaust valve 21 through the inspection port 3. The maintenance includes but is not limited to replacing the components of the exhaust valve 21, cleaning the oil stains on the exhaust valve 21, and cleaning the garbage in the air supply port 11.
[0046] The head circumference of an adult is usually 500mm-600mm. When L≥150mm and W≥100mm, the circumference of the inspection port 3 is ≥500mm. This structure facilitates maintenance personnel to extend their heads into the maintenance space 100 so that they can visually inspect the exhaust valve 21 and the air supply port 11.
[0047] In the present invention, the suspended ceiling 102 is disposed in the kitchen 101 and encloses a maintenance space 100 with the upper space of the kitchen 101 , and the suspended ceiling 102 is disposed in the kitchen 101 and encloses a cooking space 200 with the lower space of the kitchen 101 .
[0048] See also Figure 1 The inspection port 3 is provided with a movable cover plate 4 , on which an air supply passage (not marked) is provided. The cover plate 4 can separate the maintenance space 100 from the normal cooking space 200 of the kitchen 101 .
[0049] In this embodiment, the cover plate 4 includes a cover body (not marked) and an air supply device (not marked), the cover body is arranged on the inspection port 3, the air supply device is arranged on the cover body, and the air supply channel is arranged on the air supply device. Maintenance personnel can replace the air supply device by removing the cover plate.
[0050] Preferably, the air supply device is detachably provided on the cover body so that the air supply device can be replaced separately.
[0051] Preferably, the air supply passage includes at least one of a downwardly inclined section (not marked) arranged to be inclined downward, an upwardly inclined section (not marked) arranged to be inclined upward, and a horizontal section (not marked) arranged horizontally. The downwardly inclined section is used to change the direction of the air supply so as to control the flow direction of the natural wind supplying the kitchen; the upwardly inclined section is used to store condensed water to prevent the condensed water from dripping on the floor of the kitchen 101; the upwardly inclined section and the horizontal section can reduce the probability of water vapor in the kitchen 101 entering the air supply passage, so as to reduce the formation of condensed water after the water vapor in the kitchen 101 is cooled in the air supply passage.
[0052] See also Figure 1 The air supply unit 1 also includes an air supply pipe 12, the air supply port 11 and the air supply channel are connected through the air supply pipe 12, and the air supply unit 1 provides a separate air supply path for the air supply channel through the air supply pipe 12 to reduce the probability of dust and foreign matter entering the air supply channel.
[0053] from Figure 1 It can be seen that a windproof cap 121 is provided at the end of the air supply pipe 12 ; at least a portion of the end of the air supply pipe 12 extends to the outside of the kitchen 101 through the air supply port 11 .
[0054] Preferably, the air supply pipe 12 is a corrugated hose, and the air supply unit 1 absorbs the vibration energy generated by the external power through the corrugated hose, so that the air supply unit 1 can achieve the purpose of vibration reduction and noise reduction.
[0055] In the present invention, the cover plate 4 can be directly arranged on the ceiling 102. When the cover plate 4 is directly arranged on the ceiling 102, the cover plate 4 is used to open or close the inspection port 3. This structure can eliminate the negative pressure state of the kitchen at a low cost.
[0056] In the present invention, the cover plate 4 can also be indirectly arranged on the ceiling 102, specifically: the inspection port 3 is also provided with a frame (not marked), the frame is provided with an opening (not marked), the cover plate 4 is arranged on the frame and is used to open or close the opening, when the frame is arranged on the inspection port 3, and the cover plate 4 is arranged on the frame and closes the opening, the cover plate 4 and the frame close the inspection port 3; when the frame is arranged on the inspection port 3, and the cover plate 4 is arranged on the frame and opens the opening, the cover plate 4 and the frame open the inspection port 3. This structure can protect the inspection port 3, so as to increase the service life of the inspection port 3.
[0057] In this embodiment, there are multiple connection modes between the cover plate 4 and the frame to realize the quick opening or closing of the opening of the cover plate 4, specifically: 1. The cover plate 4 is magnetically connected to the frame, wherein a magnet is arranged on the cover plate 4, the magnet includes at least one of a permanent magnet and an electromagnet, the frame is made of metal, and the magnet is adsorbed on the frame to realize the closing of the opening by the cover plate 4; 2. The cover plate 4 is magnetically connected to the frame, wherein the cover plate 4 is made of metal, a magnet is arranged on the frame, and the magnet is adsorbed on the cover plate to realize the closing of the opening by the cover plate 4; 3. The cover plate 4 is magnetically connected to the frame, wherein a first magnet is arranged on the cover plate 4, a second magnet is arranged on the frame, and the first magnet is adsorbed on the second magnet to realize the closing of the opening by the cover plate 4; 4. The cover plate is snap-connected to the frame; 5. The cover plate is connected to the frame by fasteners, and the fasteners include at least one of screws, pins, rivets, nuts, bolts, and screws; 6. The cover plate is hinged to the frame.
[0058] In the utility model, the inspection port 3 can be provided with a movable cover plate 4, and the inspection port 3 can also be provided with other equipment, for example, the inspection port 3 is provided with a movable air conditioning device (not marked), the air conditioning device includes one of an air conditioner, a heater, a fresh air blower, an exhaust fan, and a central air conditioner, and the air conditioning device is provided with an air supply channel, and the air supply port and the exhaust port can be connected to the air supply channel respectively. Since some families install air conditioning equipment in the kitchen, when the kitchen is provided with air conditioning equipment, the kitchen uses the air conditioning equipment to eliminate the negative pressure state of the kitchen at a low cost.
[0059] The first preferred solution is L≥200mm, W≥150mm. Since the head circumference of an adult is usually 500mm-600mm, when L≥200mm and W≥150mm, the circumference of the inspection port 3 is ≥700mm. This structure makes it convenient for most owners to put their heads into the maintenance space 100, so that the owners can visually inspect the exhaust valve 21 and the air supply port 11.
[0060] The second preferred solution is L≥250mm, W≥150mm. When L≥250mm and W≥150mm, the perimeter of the inspection port 3 is ≥800mm. This structure is convenient for most maintenance personnel to put their heads and hands into the maintenance space 100 at the same time, so that the maintenance personnel can visually inspect the exhaust valve 21 and the air supply port 11.
[0061] The third preferred solution is L≥300mm, W≥300mm. When L≥300mm and W≥300mm, the circumference of the inspection port 3 is ≥1200mm. This structure is convenient for most owners to put their heads and hands into the maintenance space 100 at the same time, so that the owners can visually inspect the exhaust valve 21 and the air supply port 11; in addition, some teenagers with a shoulder circumference of about 300mm can enter the maintenance space 100 through the inspection port 3 to perform on-site inspection of the exhaust valve 21 and the air supply port 11.
[0062] The fourth preferred solution is L≥350mm, W≥350mm. The shoulder width of an adult woman is usually 300mm-400mm. When L≥350mm and W≥350mm, the perimeter of the inspection port 3 is ≥1400mm. This structure facilitates some adult women to enter the maintenance space 100 through the inspection port 3 to perform on-site inspection of the exhaust valve 21 and the air supply port 11.
[0063] The fifth preferred solution is L≥400mm, W≥400mm. The shoulder width of an adult woman is usually 300mm-400mm, and the shoulder width of an adult man is usually 350mm-450mm; when L≥400mm and W≥400mm, the perimeter of the inspection port 3 is ≥1600mm. This structure facilitates most adult women and some adult men to enter the maintenance space 100 through the inspection port 3 to perform on-site maintenance of the exhaust valve 21 and the air supply port 11.
[0064] The sixth preferred solution is L≥450mm, W≥450mm. The shoulder width of an adult man is usually 350mm-450mm; when L≥450mm and W≥450mm, the perimeter of the inspection port 3 is ≥1800mm. This structure facilitates the owner to enter the maintenance space 100 through the inspection port 3 to perform on-site maintenance of the exhaust valve 21 and the air supply port 11.
[0065] See also Figure 1The building includes a flue 20 and at least two kitchen units 10. The flue 20 is provided with a vertically arranged smoke exhaust channel (not marked). Each kitchen unit 10 includes a kitchen 101 and a suspended ceiling 102. The suspended ceiling 102 is arranged in the kitchen 101 and forms a maintenance space 100 with the kitchen 101. The flue 20 is vertically arranged in the kitchen 101 of each kitchen unit 10. When the flue 20 is arranged in the kitchen 101 of each kitchen unit 10, an installation hole (not marked) is provided on the side wall of the flue 20 located in the maintenance space 100 of each kitchen unit 10.
[0066] The building also includes a kitchen smoke exhaust system, which is the kitchen smoke exhaust system described in this embodiment. The exhaust valve 21 of the smoke exhaust unit 2 is arranged at the installation hole. The kitchen 101 of each kitchen unit 10 is located on the side wall of its corresponding maintenance space 100 and is provided with an air supply port 11 of the air supply unit 1. The ceiling 102 of each kitchen unit 10 is provided with an inspection port 3.
[0067] In the present invention, the ceiling 102 physically separates the kitchen 101 into a maintenance space 100 and a cooking space 200. The cooking space 200 is provided with a range hood 30 and a gas stove 40. The maintenance space 100 can collect external objects to a certain extent, and the external objects refer to objects that enter the kitchen 101 through the air supply port 11. In this structure, the maintenance space 100 will play a filtering role to eliminate the negative pressure state of the kitchen at a low cost.
[0068] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.
Claims
1. Kitchen exhaust system, characterized by include: An air supply unit, the air supply unit comprising an air supply port opened on a side wall of the kitchen; A smoke exhaust unit, the smoke exhaust unit comprising an exhaust valve arranged in the smoke duct, the exhaust valve comprising a valve body and a valve plate, the valve body is provided with an exhaust port, the valve plate is movably arranged on the valve body and used to open or close the exhaust port; An inspection port is arranged on the ceiling, and the air supply port and the exhaust port can be respectively connected to the inspection port; Wherein, the length dimension of the inspection opening is ≥150mm, and the width dimension of the inspection opening is ≥100mm.
2. The kitchen smoke exhaust system according to claim 1, characterized in that: The inspection port is provided with a movable cover plate, and the cover plate is provided with an air supply channel. The air supply port and the exhaust port can be communicated with the air supply channel respectively.
3. The kitchen smoke exhaust system according to claim 2, characterized in that: The cover plate includes a cover body and an air supply device, the cover body is arranged at the inspection port, the air supply device is arranged at the cover body, and the air supply channel is arranged at the air supply device.
4. The kitchen smoke exhaust system according to claim 3, characterized in that: The air supply device is detachably arranged on the cover body; And / or, the air supply channel includes at least one of a downwardly inclined section arranged to be inclined downward, an upwardly inclined section arranged to be inclined upward, and a horizontal section arranged horizontally.
5. The kitchen smoke exhaust system according to claim 2, characterized in that: The air supply unit also includes an air supply pipe, and the air supply port and the air supply channel are connected through the air supply pipe.
6. The kitchen smoke exhaust system according to claim 5, characterized in that: The end of the air supply pipe is provided with a windproof cap; and / or the end of at least part of the air supply pipe extends to the outside of the kitchen through the air supply port.
7. The kitchen smoke exhaust system according to claim 2, characterized in that: The inspection port is also provided with a frame, the frame is provided with an opening, and the cover is provided on the frame and is used to open or close the opening; wherein the cover is magnetically connected to the frame; or, the cover is snap-connected to the frame; or, the cover is connected to the frame via fasteners; or, the cover is hinged to the frame.
8. The kitchen smoke exhaust system according to claim 1, characterized in that: The inspection port is provided with a movable air conditioning device, the air conditioning device is provided with an air supply channel, and the air supply port and the exhaust port can be communicated with the air supply channel respectively.
9. The kitchen smoke exhaust system according to claim 1, characterized in that: The length dimension of the inspection opening is ≥300 mm, and the width dimension of the inspection opening is ≥300 mm.
10. A building, comprising a flue and at least two kitchen units, wherein the flue is provided with a vertically arranged smoke exhaust passage, each kitchen unit comprises a kitchen and a suspended ceiling, the suspended ceiling is arranged in the kitchen and forms a maintenance space with the kitchen, the flue is vertically arranged in the kitchen of each kitchen unit, when the flue is arranged in the kitchen of each kitchen unit, a mounting hole is arranged on the side wall of the flue located in the maintenance space of each kitchen unit, characterized in that: The building also includes a kitchen smoke exhaust system, which is the kitchen smoke exhaust system according to any one of claims 1 to 9, the exhaust valve of the smoke exhaust unit is arranged at the mounting hole, the kitchen of each kitchen unit is located on the side wall of its corresponding maintenance space and the air supply port of the air supply unit is provided on the ceiling of each kitchen unit.