Integrated oil return anti-leakage structure of negative pressure box air outlet of integrated stove

Abstract

The application discloses a back oil anti-leakage structure of an air outlet of a negative pressure box of an integrated cooker, which comprises a negative pressure box body and an air outlet seat, the lower ends of the left and right side walls of the negative pressure box body are symmetrically provided with air outlets, the air outlets are provided with connecting seats, the air outlet seat is connected to the negative pressure box body through one of the connecting seats on the left side or the right side, the other connecting seat is provided with a cover plate for sealing, the air outlet seat is provided with an outwardly protruding oil collecting groove, the oil collecting groove is located at the lower end close to the negative pressure box body, the oil collecting groove is provided with an outwardly protruding oil guiding groove, the negative pressure box body is provided with an inwardly recessed back oil groove at a position corresponding to the oil collecting groove, the back oil groove is provided with a back oil hole, the back oil hole penetrates the inner and outer spaces of the negative pressure box body, the back oil hole corresponds to the position of the oil guiding groove, and the oil guiding groove extends into the negative pressure box body through the back oil hole.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliances, and in particular to an oil return and anti-leakage structure for the air outlet of the negative pressure box of an integrated stove. Background Technology

[0002] The negative pressure box in an integrated cooktop serves as a power source, effectively removing fumes and reducing noise. Traditionally, the negative pressure box and the smoke duct in integrated cooktops are connected by screws, requiring high-precision assembly. Insufficient or inconsistent torque during screw tightening can easily lead to oil leaks and smoke escape, thus necessitating an improvement. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies, such as the high process requirements for assembling negative pressure boxes, which can easily lead to oil leakage and smoke escape due to insufficient or inconsistent torque during screw tightening. It provides a new oil return and anti-leakage structure for the air outlet of the negative pressure box in integrated stoves.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] An oil return and leak-proof structure for the air outlet of an integrated stove negative pressure box includes a negative pressure box body and an air outlet seat. Air outlets are symmetrically arranged at the lower ends of the left and right side walls of the negative pressure box body. A connecting seat is provided on each air outlet. The air outlet seat is connected to the negative pressure box body via one of the connecting seats on the left or right side. A cover plate is provided on the other connecting seat for sealing. An outwardly protruding oil collection groove is provided on the air outlet seat. The oil collection groove is located at the lower end near the side of the negative pressure box body. An outwardly protruding oil guide groove is provided inside the oil collection groove. An inwardly recessed oil return groove is provided on the negative pressure box body at a position corresponding to the oil collection groove. An oil return hole is provided inside the oil return groove. The oil return hole penetrates the inner and outer spaces of the negative pressure box body. The position of the oil return hole corresponds to the position of the oil guide groove. The oil guide groove extends into the interior of the negative pressure box body through the oil return hole.

[0006] The oil collection trough is located at the lower end of the air outlet seat to collect liquefied oil and prevent oil from seeping out from below the air outlet seat. The outward protruding structure of the oil collection trough cooperates with the inward recessed oil return trough to ensure that the oil collection trough can completely cover the outer surface of the negative pressure box body, preventing oil from seeping downward along the surface of the negative pressure box body. The oil guide trough cooperates with the oil return hole to allow the oil collected in the oil collection trough to flow back into the negative pressure box body for unified treatment, saving the amount of cleaning work required, and also avoiding leakage caused by oil overflowing from the oil collection trough.

[0007] As a preferred embodiment, the oil return and leakage prevention structure of the air outlet of the integrated stove negative pressure box described above has a bottom plate on the negative pressure box body with a structure that is high around the edges and low in the middle, and an oil leakage port is provided at the lowest position of the bottom plate.

[0008] The invention employs a base plate with a high perimeter and a low center structure, which allows oil on the base plate to collect and concentrate, and eventually be discharged outward from the oil drain, making it convenient for users to clean.

[0009] Preferably, the oil return and leakage prevention structure of the air outlet of the negative pressure box of the integrated stove described above has a folded edge structure that is folded outward at 90° at the air outlet. A sealing groove is provided at the position corresponding to the folded edge structure of the air outlet seat. A sealing ring is provided in the sealing groove. The folded edge structure is embedded in the sealing groove. The sealing ring and the folded edge structure are interference-fitted to seal the gap between the folded edge structure and the sealing groove.

[0010] The folded edge structure, in conjunction with the sealing groove, compresses the sealing ring, further enhancing the sealing performance between the air outlet seat and the negative pressure box body.

[0011] Preferably, in the above-described oil return and leakage prevention structure of the air outlet of the negative pressure box of an integrated stove, the sealing ring is disposed at the bottom of the sealing groove, the opening of the folded edge structure is in linear contact with the sealing ring, and the folded edge structure presses the sealing ring along the locking direction of the air outlet seat.

[0012] The present invention uses a folded edge structure with linear contact between the opening and the sealing ring, compared to ordinary surface contact. As the air outlet seat is tightened and pressed, the sealing ring and the folded edge structure are fully fitted together, resulting in a better sealing effect.

[0013] Preferably, in the above-described integrated stove negative pressure box air outlet oil return and anti-leakage structure, the end of the air outlet seat away from the negative pressure box body is connected to a smoke exhaust pipe, a sealing ring is provided at the connection between the air outlet seat and the smoke exhaust pipe, the smoke exhaust pipe is sleeved on the air outlet seat, and the sealing ring seals the gap between the smoke exhaust pipe and the air outlet seat.

[0014] Installing a sealing ring at the connection between the air outlet seat and the exhaust pipe helps improve the sealing performance between the air outlet seat and the exhaust pipe, making the sealing performance more reliable.

[0015] As a preferred embodiment, the oil return and leakage prevention structure of the air outlet of the integrated stove negative pressure box described above is provided with anti-slip ribs at the connection between the air outlet seat and the exhaust pipe, and the number of anti-slip ribs is not less than 3.

[0016] Setting anti-slip ribs can strengthen the connection between the air outlet seat and the smoke exhaust pipe, so that the smoke exhaust pipe is firmly fixed on the air outlet seat.

[0017] Preferably, the oil return and leakage prevention structure of the air outlet of the integrated stove negative pressure box described above also includes a clamp, which is located on the outside of the exhaust pipe and presses the exhaust pipe to fit against the air outlet seat.

[0018] The clamp compresses the exhaust pipe inward, causing the exhaust pipe, sealing ring, and air outlet seat to fit together more tightly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This is a partial structural diagram of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0023] Figure 5 This is a schematic diagram showing the connection between the air outlet seat and the smoke exhaust pipe in this invention;

[0024] Figure 6 for Figure 5 A magnified view of part B in the middle. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 The invention will be further described in detail with reference to specific embodiments, but these are not intended to limit the invention:

[0026] Example 1

[0027] An oil return and leakage prevention structure for the air outlet of the negative pressure box of an integrated stove includes a negative pressure box body 1 and an air outlet seat 3. Air outlets 11 are symmetrically arranged at the lower ends of the left and right side walls of the negative pressure box body 1. A connecting seat 12 is provided on each air outlet 11. The air outlet seat 3 is connected to the negative pressure box body 1 via one of the connecting seats 12 on the left or right side. A cover plate 7 is provided on the other connecting seat 12 for sealing. An outwardly protruding oil collection groove 31 is provided on the air outlet seat 3, and the oil collection groove 31 is located near the air outlet. At the lower end of one side of the negative pressure box body 1, an outwardly protruding oil guide groove 32 is provided in the oil collection groove 31. An inwardly recessed oil return groove 13 is provided on the negative pressure box body 1 at a position corresponding to the oil collection groove 31. An oil return hole 131 is provided in the oil return groove 13. The oil return hole 131 penetrates the inner and outer spaces of the negative pressure box body 1. The position of the oil return hole 131 corresponds to that of the oil guide groove 32. The oil guide groove 32 extends into the interior of the negative pressure box body 1 through the oil return hole 131.

[0028] Preferably, the bottom plate 16 of the negative pressure box body 1 adopts a structure that is high around the edges and low in the middle, and an oil drain 161 is provided at the lowest position of the bottom plate 16.

[0029] Preferably, the air outlet 11 is provided with a folded edge structure 111 that folds outward at 90°. The air outlet seat 3 is provided with a sealing groove 15 at a position corresponding to the folded edge structure 111. A sealing ring 4 is provided in the sealing groove 15. The folded edge structure 111 is embedded in the sealing groove 15. The sealing ring 4 and the folded edge structure 111 are press-fitted to seal the gap between the folded edge structure 111 and the sealing groove 15.

[0030] Preferably, the sealing ring 4 is disposed at the bottom of the sealing groove 15, the opening of the folded edge structure 111 is in linear contact with the sealing ring 4, and the folded edge structure 111 presses the sealing ring 4 along the locking direction of the air outlet seat 3.

[0031] Preferably, the end of the air outlet seat 3 away from the negative pressure box body 1 is connected to the smoke exhaust pipe 2, and a sealing ring 5 is provided at the connection between the air outlet seat 3 and the smoke exhaust pipe 2. The smoke exhaust pipe 2 is sleeved on the air outlet seat 3, and the sealing ring 5 seals the gap between the smoke exhaust pipe 2 and the air outlet seat 3.

[0032] Preferably, the connection between the air outlet seat 3 and the smoke exhaust pipe 2 is provided with anti-slip ribs 33, and the number of anti-slip ribs 33 is not less than 3.

[0033] Preferably, a clamp 6 is also included, which is located on the outside of the exhaust pipe 2 and presses the exhaust pipe 2 to fit against the air outlet seat 3.

[0034] More specifically, when the integrated stove is working, the high-temperature gaseous fumes pass through the negative pressure box 1, the air outlet 11, the air outlet seat 3, and the exhaust pipe 2 in sequence and are discharged to the outside. When the integrated stove stops working, the fumes that have been cooled and liquefied at the air outlet seat 3 flow downward with gravity and eventually accumulate in the oil collection tank 31. The oil in the oil collection tank 31 flows back into the negative pressure box 1 through the oil guide groove 32 and the oil return hole 131. Finally, through the structure of the bottom plate 16, which is high around the perimeter and low in the middle, it gathers with the cooling oil inside the negative pressure box 1 and is discharged outward from the oil drain 161.

[0035] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included within the scope of the present invention.

Claims

1. An integrated stove negative pressure box air outlet oil return anti-leakage structure, comprising a negative pressure box body (1) and an air outlet seat (3), the lower ends of the left and right side walls of the negative pressure box body (1) are symmetrically provided with air outlets (11), the air outlets (11) are provided with connecting seats (12), the air outlet seat (3) is connected to the negative pressure box body (1) through one of the connecting seats (12) on the left side or the right side, and the other connecting seat (12) is provided with a cover plate (7) for sealing. The air outlet seat (3) is provided with an outwardly protruding oil collecting groove (31) located at the lower end close to the negative pressure box body (1), the oil collecting groove (31) is provided with an outwardly protruding oil guiding groove (32), the negative pressure box body (1) is provided with an inwardly recessed oil return groove (13) corresponding to the oil collecting groove (31), the oil return groove (13) is provided with an oil return hole (131) penetrating the inner and outer spaces of the negative pressure box body (1), the oil return hole (131) corresponds to the position of the oil guiding groove (32), and the oil guiding groove (32) extends into the negative pressure box body (1) through the oil return hole (131).

2. The oil return anti-leakage structure of an integrated kitchen negative pressure box air outlet according to claim 1, characterized in that: The bottom plate (16) on the negative pressure box body (1) adopts a structure with high middle and low four sides, and the lowest position of the bottom plate (16) is provided with an oil leakage port (161).

3. The oil return anti-leakage structure of an integrated kitchen negative pressure box air outlet according to claim 2, characterized in that: The air outlet (11) is provided with a 90° outwardly folded edge structure (111), the air outlet seat (3) is provided with a sealing groove (15) corresponding to the edge structure (111), the sealing groove (15) is provided with a sealing ring (4), the edge structure (111) is embedded in the sealing groove (15), and the sealing ring (4) and the edge structure (111) are in interference fit to seal the gap between the edge structure (111) and the sealing groove (15).

4. The oil return anti-leakage structure of an integrated kitchen negative pressure box air outlet according to claim 3, characterized in that: The sealing ring (4) is arranged at the bottom of the sealing groove (15), the mouth of the edge structure (111) is in linear contact with the sealing ring (4), and the edge structure (111) extrudes the sealing ring (4) along the locking direction of the air outlet seat (3).

5. The oil return anti-leakage structure of an integrated kitchen negative pressure box air outlet according to claim 4, characterized in that: The end of the air outlet seat (3) away from the negative pressure box body (1) is connected with a smoke exhaust pipe (2), the air outlet seat (3) is provided with a sealing ring (5) at the connection with the smoke exhaust pipe (2), the smoke exhaust pipe (2) is sleeved on the air outlet seat (3), and the sealing ring (5) seals the gap between the smoke exhaust pipe (2) and the air outlet seat (3).

6. The oil return anti-leakage structure of an integrated kitchen negative pressure box air outlet according to claim 5, characterized in that: The air outlet seat (3) is provided with anti-skid ribs (33) at the connection with the smoke exhaust pipe (2), and the number of the anti-skid ribs (33) is not less than 3.

7. The oil return anti-leakage structure of an integrated kitchen negative pressure box air outlet according to claim 6, characterized in that: A clamp (6) is further included, which is located outside the smoke exhaust pipe (2) and presses the smoke exhaust pipe (2) to adhere to the air outlet seat (3).

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