Fan smoke exhaust system and integrated stove

Abstract

The present invention discloses a fan exhaust system and an integrated stove, wherein the fan exhaust system includes an air duct housing, a negative pressure box housing, and a range hood fan. The range hood fan is disposed within the negative pressure box housing, and the air outlet of the range hood fan is fixedly mounted on the bottom wall of the negative pressure box housing or the top wall of the air duct housing. The bottom of the negative pressure box housing is provided with a negative pressure box oil drain port, the lower end of which is connected to an oil drain pipe. The bottom of the air duct housing is provided with an air duct oil drain port, the lower end of which is connected to an oil guide box, the lower end of which has a box oil drain port. The side wall of the oil guide box is also provided with a side oil drain port for connecting to the other end of the oil drain pipe. The technical solution of the present invention is ingeniously designed. On the one hand, the oil drain pipe can drain condensed oil and water accumulated within the negative pressure box housing. On the other hand, the oil drain pipe also serves as a channel for the backflow of oil smoke. Through the above structural design, the oil smoke airflow can be effectively prevented from being discharged into the integrated stove cabinet through the air duct oil drain port.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated stoves, and in particular to a fan smoke exhaust system and an integrated stove. Background Art

[0002] An integrated stove is a kitchen appliance that combines multiple functions, including a range hood, gas stove, disinfection cabinet, storage cabinet, steamer, oven, and steam-oven combination. It's also known in the industry as an eco-friendly stove or integrated eco-friendly stove. It offers advantages such as space savings, excellent fume extraction, energy savings, and environmental protection. Typical integrated stoves have an oil absorption rate of 95%. The higher the oil fume removal rate, the better the quality. Some brands boast an oil fume removal rate reaching the extreme of 99.95%.

[0003] Existing integrated stoves often have an oil leak at the lowest point of the air guide box, and a corresponding oil leak is also provided at the lowest point of the volute air duct. However, during the operation, since the volute air duct is directly connected to the air outlet hood, the air flow disturbance is greatly reduced, and the high-pressure airflow often generates air noise when passing through the oil leak. In order to solve the above problems, a Chinese invention patent application (application publication number: CN 113531623 A, application publication date: 2021.10.22) discloses a silent straight-line air duct structure and an integrated stove thereof. During the operation of this technical solution, after the high-speed airflow vertically enters the guide channel inside the shell, the high-speed airflow can instantly slow down after contacting the bottom of the shell. At the same time, designing a non-straight guide channel can greatly increase the passing distance of the high-speed airflow, and can also greatly reduce the flow rate of the high-speed airflow after moving through multiple turns. Moreover, after reducing the airflow velocity inside the shell, it can also reduce the subsequent high-pressure airflow entering the shell, further reducing the airflow entering the guide channel, which can greatly reduce the noise.

[0004] In the above technical solution, due to the existence of the oil leakage port, the inner cavity of the cabinet of the integrated stove will always be connected with the air outlet of the fan through the oil leakage port, the inlet, and the outlet. When the fan is running, the air outlet of the fan will always be kept in a positive pressure state, and any hole connected to the air outlet will flow out oil smoke. Although the shell added by this solution can reduce the wind speed of the oil smoke airflow at the oil leakage port, thereby reducing wind noise, it cannot prevent the oil smoke from overflowing from the oil leakage port into the inner cavity of the cabinet of the integrated stove. In the long run, serious oil stains will adhere to the inside of the stove cabinet.

[0005] Therefore, how to design a fan exhaust system that can effectively prevent the oil smoke from overflowing into the stove cabinet and at the same time can guide the condensed oil and water out has become a technical problem that needs to be solved in this application. Summary of the Invention

[0006] The object of the present invention is to provide a fan smoke exhaust system and an integrated stove to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A fan smoke exhaust system comprises an air duct casing, a negative pressure box casing and a range hood fan, the duct casing is spliced ​​and fixed to the lower end of the negative pressure box casing, the range hood fan is arranged in the negative pressure box casing, the air outlet pipe of the range hood fan is fixedly installed on the bottom wall of the negative pressure box casing, and the air outlet pipe of the range hood fan is communicated with the inside of the air duct casing, the bottom of the negative pressure box casing is provided with a negative pressure box oil drain port, the lower end of the negative pressure box oil drain port is connected to an oil drain pipe; the bottom of the air duct casing is provided with an air duct oil drain port, the lower end of the air duct oil drain port is connected to an oil guide bin box, the lower end of the oil guide bin box has a bin box oil drain port, and the side wall of the oil guide bin box is also provided with a side oil drain port for connecting with the other end of the oil drain pipe.

[0009] Preferably, the top of the oil guide box has an oil inlet for docking with the positive pressure box oil discharge port, the lower end of the side wall of the oil guide box away from the side oil discharge port is provided with an inclined guide wall 1, and the lower end of the side wall of the oil guide box close to the side oil discharge port is provided with an inclined guide wall 2; the oil discharge port of the box is provided between the bottom edge of the inclined guide wall 2 and the bottom edge of the inclined guide wall 1.

[0010] Preferably, the bottom edge height of the inclined guide wall 2 is lower than the bottom edge height of the inclined guide wall 1, and the oil inlet of the tank box is located above the inclined guide wall 1. The oil guide tank box has a reasonable structural design and can better guide oil smoke and oil and water.

[0011] Preferably, an arc-shaped guide plate is installed inside the positive pressure housing at the air outlet of the range hood fan, so as to smoothly guide and comb the oil smoke and ensure that the oil smoke can be discharged quickly.

[0012] Preferably, a concave groove is provided at the bottom of the negative pressure box shell corresponding to the negative pressure box oil discharge port. Oil and water are collected through the concave groove, and the collected oil and water can be discharged from the negative pressure box oil discharge port.

[0013] An integrated stove includes a stove cabinet, a head compartment shell is installed at the upper rear end of the stove cabinet, a head air inlet is provided at the upper end of the head compartment shell, and also includes any of the above-mentioned fan smoke exhaust systems, the fan smoke exhaust system is installed and fixed inside the stove cabinet, and an air inlet is provided at the upper end of the negative pressure box shell and is connected to the rear plate of the negative pressure box.

[0014] Preferably, the bottom of the stove cabinet is further provided with an insertion hole, in which a bottom oil collecting box for collecting oil and water is inserted, and the bottom oil collecting box is located below the oil guide box. The bottom oil collecting box facilitates the collection and cleaning of condensed oil and water guided out of the fan exhaust system.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The technical solution of the present invention is cleverly designed. The oil drain pipe can not only drain the condensed oil and water accumulated inside the negative pressure box shell, but also serve as a channel for the oil smoke airflow to return. The above structural design can effectively prevent the oil smoke airflow from overflowing into the stove cabinet, preventing the stove cabinet from being seriously contaminated by oil after long-term use.

[0017] 2. The oil guide box structure of the present invention is reasonably designed. It can not only guide and discharge condensed oil and water, but also reasonably guide the overflowing oil fume airflow and redirect it back to the interior of the negative pressure box shell, which can better guide and recover the oil fume airflow and guide out the condensed oil and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a fan smoke exhaust system from a first perspective;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of a fan smoke exhaust system from a second perspective;

[0020] Figure 3 This is a three-dimensional structural diagram of a fan smoke exhaust system with a hidden negative pressure box shell back side panel;

[0021] Figure 4 A fan smoke exhaust system Figure 3 A schematic diagram of the structure enlarged in the middle;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of a fan smoke exhaust system;

[0023] Figure 6 This is a schematic cross-sectional view of an oil guide box in a fan smoke exhaust system;

[0024] Figure 7 This is a schematic diagram of the top view of an integrated stove;

[0025] Figure 8 An integrated stove Figure 7 Schematic diagram of the structure of the middle BB section;

[0026] Figure 9 An integrated stove Figure 7 Schematic diagram of the structure of the middle CC section;

[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of an integrated stove with hidden cabinet doors;

[0028] Figure 11 This is a schematic diagram of the three-dimensional structure of an integrated stove.

[0029] In the figure: 100-stove cabinet, 101-cabinet door, 102-gas stove, 103-head compartment shell, 104-head air inlet, 105-pipe through hole, 1-negative pressure box shell, 11-negative pressure box air inlet, 12-recessed trough, 13-negative pressure box oil drain port, 2-air duct casing, 21-air duct smoke exhaust port, 22-arc-shaped guide plate, 3-oil drain pipe, 4-range hood fan, 5-oil guide box, 51-tank box oil inlet, 52-inclined guide wall 1, 53-inclined guide wall 2, 54-tank box oil drain port, 55-side oil drain port, 6-bottom oil collecting box. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1 to 6 , a fan smoke exhaust system, including an air duct casing 2, a negative pressure box shell 1 and a range hood fan 4, the air duct casing 2 is spliced ​​and fixed at the lower end of the negative pressure box shell 1, the range hood fan 4 is arranged in the negative pressure box shell 1, the air outlet of the range hood fan 4 is fixedly installed on the bottom wall of the negative pressure box shell 1, and the air outlet of the range hood fan 4 is connected to the inside of the positive pressure box shell 1. Obviously, as the smoke exhaust end, the end of the air duct casing 2 is provided with an air duct smoke exhaust port 21, and the air duct smoke exhaust port 21 exhausts smoke through The pipeline can be connected to the public exhaust channel of the building, so that the oil smoke is discharged into the public exhaust channel of the building. In addition, as the smoking end, the upper end of the negative pressure box shell 1 is provided with a negative pressure box air inlet 11, and the oil smoke generated at the stove can enter the interior of the negative pressure box shell 1 through the head air inlet 104 and the negative pressure box air inlet 11. The difference between this embodiment and the prior art is that the bottom of the negative pressure box shell 1 is provided with a negative pressure box oil discharge port 13, and the lower end of the negative pressure box oil discharge port 13 is connected to the oil discharge pipe 3;

[0032] An air duct oil drain port is provided at the bottom of the air duct housing 2, and an oil guide box 5 is installed at the lower end of the air duct oil drain port. The lower end of the oil guide box 5 has a box oil drain port 54, and the side wall of the oil guide box 5 is also provided with a side oil drain port 55 for docking and communicating with the other end of the oil drain pipe 3.

[0033] The working principle of the present invention is as follows: when the range hood fan 4 is turned on and operated, the oil smoke generated at the stove can enter the interior of the negative pressure box shell 1 through the head air inlet 104 and the negative pressure box air inlet 11 under the suction effect of the range hood fan 4. Then, the oil smoke inside the negative pressure box shell 1 enters the interior of the air duct shell 2 through the range hood fan 4. Finally, the oil smoke airflow passes through the air duct exhaust port 21 and the exhaust pipe in sequence and can enter the public exhaust channel of the building to realize the exhaust of the oil smoke.

[0034] The oil and water condensed and accumulated inside the air duct casing 2 can enter the oil guide box 5 from the air duct oil drain port, while the oil and water condensed and accumulated inside the negative pressure box casing 1 can enter the oil guide box 5 from the oil drain pipe 3. Finally, the oil and water are discharged from the oil drain port 54 at the lower end of the oil guide box 5.

[0035] During the operation of the range hood fan 4, the interior of the air duct casing 2 is in a positive pressure state. Therefore, part of the oil smoke airflow will overflow from the oil discharge port of the air duct, and the overflowed oil smoke will enter the interior of the oil guide bin box 5. At this time, if the overflowed oil smoke is not guided, the oil smoke airflow will continue to overflow from the oil discharge port 54 of the bin box, and thus enter the interior of the stove cabinet 100 of the entire integrated stove. If this continues for a long time, serious oil stains will adhere to the interior of the stove cabinet.

[0036] In the embodiment of the present invention, a side oil drain port 55 is provided on the side wall of the oil guide box 5, and the side oil drain port 55 is connected to the interior of the negative pressure box shell 1 through the oil drain pipe 3. Under the negative pressure suction inside the negative pressure box shell 1, the oil fume airflow entering the oil guide box 5 will flow back to the interior of the negative pressure box shell 1 through the oil drain pipe 3. Obviously, the technical solution of the present invention is cleverly designed. On the one hand, the oil drain pipe 3 can drain the condensed oil and water accumulated inside the negative pressure box shell 1. On the other hand, the oil drain pipe 3 also serves as a channel for the reflux of the oil fume airflow. Through the above-mentioned structural design, the oil fume airflow can be effectively prevented from overflowing into the interior of the stove cabinet 100, and the interior of the stove cabinet 100 can be prevented from being adhered to more serious oil stains after long-term use.

[0037] In order to better guide the oil smoke airflow and drain the condensed oil and water, as a further specific solution, the top of the oil guide box 5 has an oil inlet 51 for docking with the oil discharge port of the positive pressure tank. The lower end of the side wall of the oil guide box 5 away from the side oil discharge port 55 is provided with an inclined guide wall 1 52, and the lower end of the side wall of the oil guide box 5 close to the side oil discharge port 55 is provided with an inclined guide wall 2 53.

[0038] The oil discharge port 54 of the bin is arranged between the bottom edge of the second inclined guide wall 53 and the bottom edge of the first inclined guide wall 52 .

[0039] Obviously, as a further preferred solution, in this embodiment, the bottom edge height of the second inclined guide wall 53 is lower than the bottom edge height of the first inclined guide wall 52 , and the oil inlet 51 of the tank is located above the first inclined guide wall 52 .

[0040] During operation, the condensed oil and water discharged from the oil drain port of the air duct will fall onto the inclined guide wall 1 52 under the action of gravity. Under its guidance, the condensed oil and water will continue to fall onto the inclined guide wall 2 53. Under its guidance, the condensed oil and water will eventually be discharged from the oil drain port 54 of the bin.

[0041] The condensed oil and water discharged from the oil drain pipe 3 will fall onto the second inclined guide wall 53, and under its guidance, the condensed oil and water will be discharged from the oil drain port 54 of the tank box;

[0042] The oil smoke entering from the oil duct outlet is guided by the inclined guide wall 1 52 and the inclined guide wall 2 53 and then drawn back into the negative pressure housing 1 through the oil drain pipe 3. The oil guide box 5 of the present invention is structurally designed to not only guide and drain condensed oil and water but also to properly guide the overflowing oil smoke back into the negative pressure housing 1, effectively preventing the stove cabinet 100 from being contaminated by oil smoke.

[0043] The oil smoke flows vertically before entering the air duct housing 2. In order to avoid the oil smoke directly impacting the inner wall of the air duct housing 2 and causing air flow turbulence, and to ensure that the oil smoke can be discharged smoothly, please refer to Figure 9 In this embodiment, an arc-shaped guide plate 22 is installed inside the positive pressure housing 2 at the air outlet of the range hood fan 4. The arc-shaped guide plate 22 can smoothly guide and comb the oil smoke to ensure that the oil smoke can be discharged quickly.

[0044] In order to better collect the oil and water accumulated inside the negative pressure box shell 1, a concave groove body 12 is provided at the bottom of the negative pressure box shell 1 corresponding to the negative pressure box oil discharge port 13. The oil and water are collected by the concave groove body 12, and the collected oil and water can be discharged from the negative pressure box oil discharge port 13.

[0045] See also Figures 7-11An integrated stove includes a stove cabinet 100. A head housing 103 is mounted at the upper rear end of the stove cabinet 100. A head air inlet 104 is disposed at the upper end of the head housing 103. The present invention also includes the aforementioned fan exhaust system, which is mounted and fixed inside the stove cabinet 100. The negative pressure box air inlet 11 at the upper end of the negative pressure box housing 1 is connected to and in communication with the head housing 103. Obviously, a gas stove 102 may also be mounted at the upper end of the stove cabinet 100. A cabinet door 101 may also be mounted at the front end of the stove cabinet 100. A duct through-hole 105 is also formed on the side wall of the stove cabinet 100. A smoke exhaust duct may be passed through the duct through-hole 105. Kitchen appliances such as a cleaning cabinet, a disinfection cabinet, a steamer, an oven, a steam oven, a microwave oven, and a dishwasher may also be mounted inside the stove cabinet 100.

[0046] During operation, the oil smoke generated on the stove can pass through the head air inlet 104 and the head compartment shell 103 in sequence, and then enter the negative pressure box shell 1 for collection.

[0047] In order to facilitate the collection and cleaning of condensed oil and water discharged from the fan exhaust system, the bottom of the stove cabinet 100 is also provided with an insertion hole, in which a bottom oil collecting box 6 for collecting oil and water is inserted. The bottom oil collecting box 6 is located below the oil guide box 5.

[0048] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention, and should not be understood as limiting the present invention.

Claims

1. A fan smoke exhaust system, comprising an air duct housing (2), a negative pressure box housing (1) and a range hood fan (4), wherein the air duct housing (2) is spliced ​​and fixed to the lower end of the negative pressure box housing (1), the range hood fan (4) is arranged in the negative pressure box housing (1), the air outlet of the range hood fan (4) is fixedly mounted on the bottom wall of the negative pressure box housing (1) or the top wall of the air duct housing (2), and the air outlet of the range hood fan (4) is in conduction with the interior of the air duct housing (2), characterized in that: The bottom of the negative pressure box shell (1) is provided with a negative pressure box oil discharge port (13), and the lower end of the negative pressure box oil discharge port (13) is connected to an oil discharge pipe (3); The bottom of the air duct housing (2) is provided with an air duct oil drain port, the lower end of which is docked with an oil guide box (5), the lower end of which has an oil box oil drain port (54), and the side wall of the oil guide box (5) is further provided with a side oil drain port (55) for docking and communicating with the other end of the oil drain pipe (3); The top of the oil guide box (5) is provided with a box oil inlet (51) for docking with the oil discharge port of the air duct, the lower end of the side wall of the oil guide box (5) away from the side oil discharge port (55) is provided with an inclined guide wall 1 (52), and the lower end of the side wall of the oil guide box (5) close to the side oil discharge port (55) is provided with an inclined guide wall 2 (53); The oil discharge port (54) of the bin is arranged between the bottom edge of the second inclined guide wall (53) and the bottom edge of the first inclined guide wall (52); The bottom edge height of the second inclined guide wall (53) is lower than the bottom edge height of the first inclined guide wall (52), and the oil inlet (51) of the tank box is located above the first inclined guide wall (52).

2. A fan smoke exhaust system according to claim 1, characterized in that: An arc-shaped guide plate (22) is also installed inside the air duct housing (2) at the air outlet of the range hood fan (4).

3. A fan smoke exhaust system according to claim 2, characterized in that: A recessed groove (12) is provided at the bottom of the negative pressure box shell (1) corresponding to the negative pressure box oil discharge port (13).

4. An integrated stove, comprising a stove cabinet (100), a head housing (103) mounted on the upper rear portion of the stove cabinet (100), and a head air inlet (104) disposed on the upper end of the head housing (103), characterized in that: It also includes the fan smoke exhaust system described in any one of claims 1-3, the fan smoke exhaust system is installed and fixed inside the stove cabinet (100), and the negative pressure box air inlet (11) at the upper end of the negative pressure box shell (1) is connected to the head compartment shell (103).

5. The integrated stove according to claim 4, characterized in that: The bottom of the stove cabinet (100) is also provided with an insertion hole, in which a bottom oil collecting box (6) for collecting oil and water is inserted. The bottom oil collecting box (6) is located below the oil guide box (5).

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