A lifting type range hood

Abstract

The invention discloses a lifting type range hood, which comprises an upper box, a lower box and an air inlet body. The lower box is arranged on the upper box, and the air inlet body is arranged on the lower box and can move up and down relative to the lower box. The bottom of the air inlet body is provided with an oil cup. The lower box is internally provided with an air inlet channel for the air inlet body to move up and down. The air inlet body is provided with a scraping member. During the movement of the air inlet body, the scraping member can scrape the oil on the inner wall of the air inlet channel into the oil cup. The air inlet body of the lifting type range hood is arranged on the lower box, and the lower box is internally provided with an air inlet channel for the air inlet body to move up and down. During the movement of the air inlet body, the scraping member on the air inlet body can scrape the oil on the inner wall of the air inlet channel into the oil cup, so that the inner wall of the air inlet channel is cleaner, and the self-cleaning of the air inlet channel is realized, and the trouble of disassembling and cleaning is avoided.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a lift-type range hood. Background Technology

[0002] Traditional top-mounted range hoods are bulky, making it easy for cooks to bump their heads. If the distance between the hood's air inlet and the area where fumes are generated is large, the fume extraction path is longer, increasing extraction time and making it easier for fumes to escape during cooking. Lowering the installation height of the range hood and bringing the inlet as close to the fume source as possible, while improving fume extraction efficiency, results in a cramped cooking space, increasing the risk of the cook's head hitting the fume hood. Furthermore, a lower installation height also affects visibility and the overall appearance of the kitchen. Therefore, lift-type range hoods were invented, where the inlet can be raised or lowered; it lowers when the hood is on and rises when it is off. For example, the Chinese invention patent No. 202010007102.1 (authorization announcement No. CN 111006284 B) discloses a range hood, which is provided with an oil guiding structure inside the fan hood for guiding the oil discharged from the fan hood and the fan system into the first air inlet box. The oil guiding structure includes an oil storage guide groove that can store oil, and an oil outlet is opened on the oil storage guide groove. The oil guiding structure also includes an oil outlet opening and closing mechanism. When the first air inlet box is in a descending state, the oil outlet opening and closing mechanism opens the oil outlet, thereby connecting the oil storage guide groove and the inside of the first air inlet box. When the first air inlet box is in a retracted state inside the fan hood, the oil outlet opening and closing mechanism closes the oil outlet. Although this range hood collects oil into the oil collection device of the air intake assembly, solving the oil path problem of a single oil collection device in built-in lift-type range hoods, the first air intake box cannot scrape off the oil on the inner wall of the second air intake box during the lifting and lowering process. This causes the inner wall of the second air intake box to easily become greasy. If too much grease adheres, it will not only affect the smoke extraction effect but also adversely affect the lifting and lowering of the first air intake box. Furthermore, cleaning the inside of the second air intake box is inconvenient and requires professional disassembly and cleaning. In conclusion, further improvements are needed for the existing lift-type range hoods. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a liftable range hood that can smoothly scrape the oil on the inner wall of the air inlet channel of the lower housing into the oil cup, in view of the above-mentioned existing technology.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the lifting range hood includes a lower box and an air inlet body. The air inlet body is disposed on the lower box and can move up and down relative to the lower box. An oil cup is installed at the bottom of the air inlet body. The feature is that the lower box has an air inlet channel for the air inlet body to move up and down. The air inlet body has a scraper. During the process of the air inlet body moving up and down, the scraper can scrape the oil on the inner wall of the air inlet channel into the oil cup.

[0005] In order to scrape the oil stains on the lower front panel wall of the lower housing into the oil cup, the lower housing has a lower front panel, which forms the front wall of the air intake channel. The air intake body has a mounting plate that moves synchronously with the air intake body. The mounting plate is located on the rear side of the lower front panel. The scraping component includes a front scraper installed on the front side of the mounting plate. The front scraper is used to scrape the oil on the lower front panel wall into the oil cup.

[0006] In order to effectively scrape off the oil on the lower front panel wall, the lower front panel has a vertical surface that mates with the front scraper.

[0007] In order to allow the oil scraped off from the lower front plate to flow smoothly into the oil cup, the lower edge of the lower front plate extends backward and downward with a folded edge, and the vertical projection of the edge of the folded edge falls into the oil cup.

[0008] Preferably, the mounting plate is an oil filter plate located at the top of the air inlet body, and the oil filter plate is inclined downwards from front to back. In this way, the mounting plate serves two purposes: installing the scraper and filtering oil.

[0009] The front scraper can have various installation structures. Preferably, the air inlet has a smoke inlet, and an upper guide plate is installed at the bottom front side of the oil filter plate. The upper guide plate is vertically arranged above the smoke inlet, and the front scraper is a front sealing strip installed between the oil filter plate and the upper guide plate.

[0010] In order to allow the scraped oil to flow down through the oil leakage notch on the front sealing strip, the front edge of the front sealing strip has a front oil leakage notch.

[0011] Further preferably, the bottom of the lower front panel has a downwardly bent edge, and the top of the upper guide plate has an upwardly bent edge. The lower and upper edges have opposing surfaces. When the lower housing is at its lowest position, the opposing surfaces of the lower and upper edges abut or approach each other, forming a surface seal between the upper guide plate and the lower front panel. In this way, the lower edge of the lower front panel, in conjunction with the upper edge of the upper guide plate, further increases the probability of airflow depressurization through the small gap between the front sealing strip and the vertical plane of the lower front panel during the descent of the air intake, thus improving the fume extraction effect.

[0012] A further preferred embodiment includes an upper housing, with the lower housing disposed on the upper housing. Typically, the fan system can be installed inside the upper housing.

[0013] In order to scrape the oil on the back plate of the lower housing into the oil cup, the lower housing has a back plate, the air inlet has an oil filter plate that moves synchronously with the air inlet, the oil filter plate is located on the front side of the back plate, and the scraping component includes a rear scraper installed on the rear side of the oil filter plate. The rear scraper is used to scrape the oil on the back plate wall into the oil cup.

[0014] In a further preferred embodiment, the back plate forms the rear wall of the air inlet channel, and the projection of the lower edge of the back plate in the vertical direction falls into the oil cup. In this way, the oil on the inner wall surface of the back plate can flow smoothly into the oil cup.

[0015] In order for the scraped oil to flow down through the oil leakage notch on the rear sealing strip, the rear scraper is a rear sealing strip installed on the rear side of the oil filter plate, and the rear edge of the rear sealing strip has a rear oil leakage notch.

[0016] Compared with the prior art, the advantages of the present invention are as follows: the air intake body of the lifting range hood is located in the lower box. The upper and lower boxes have an air intake channel for the air intake body to be lifted and lowered. During the lifting and lowering process of the air intake body, the scraper on the air intake body can scrape the oil on the inner wall of the air intake channel into the oil cup, making the inner wall of the air intake channel cleaner. This achieves the self-cleaning of the air intake channel and eliminates the trouble of disassembling and cleaning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention (lower housing in raised state);

[0018] Figure 2 for Figure 1 The diagram shown is a schematic of the internal structure of the range hood.

[0019] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the range hood.

[0020] Figure 4 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0021] Figure 5 This is a schematic diagram of the air inlet and oil cup according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention (lower housing in a lowered state);

[0023] Figure 7 for Figure 5 The diagram shows a cross-sectional view of the range hood. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 7 As shown, the lift-type range hood of this embodiment includes an upper housing 1, a lower housing 2, and an air inlet 3. A fan system 8 is installed inside the upper housing 1. The lower housing 2 is located on the upper housing 1 and can move up and down relative to the upper housing 1. Furthermore, the lower housing 2 encloses the upper housing 1. Figure 3 The direction indicated by the middle arrow B is rearward. The air inlet 3 is located at the rear of the lower housing 2 and can move up and down relative to the lower housing 2. That is, the upper housing 1, the lower housing 2, and the air inlet 3 constitute a two-stage lifting mechanism. The lower housing 2 and the air inlet 3 can move synchronously under the drive of a single drive mechanism, or they can move independently under the drive of an independent drive mechanism.

[0026] An oil cup 4 is installed at the bottom of the air inlet body 3. The lower housing 2 has an air inlet channel 21 for the air inlet body 3 to be raised and lowered. The air inlet body 3 has a scraper. During the raising and lowering of the air inlet body 3, the scraper can scrape the oil on the inner wall of the air inlet channel 21 into the oil cup 4.

[0027] Specifically, the lower housing 2 has a lower front plate 22 and a back plate 23. The lower front plate 22 forms the front wall of the air inlet channel 21, and the back plate 23 forms the rear wall of the air inlet channel 21. Both the lower front plate 22 and the back plate 23 have vertical surfaces that cooperate with the scraper. The lower edge of the lower front plate 22 extends downward and backward with a lower folded edge 221. The projection of the rear edge of the lower folded edge 221 in the vertical direction falls into the oil cup 4, and the projection of the lower edge of the back plate 23 in the vertical direction also falls into the oil cup 4, ensuring that the oil on the walls of the lower front plate 22 and the back plate 23 can flow into the oil cup 4.

[0028] Driven by the drive mechanism, the air inlet 3 moves up and down within the air inlet channel 21. An oil filter plate 31 is installed on the top of the air inlet 3, and the oil filter plate 31 is inclined downwards from front to back, i.e., the oil filter plate 31 is located behind the lower front plate 22 and in front of the back plate 23. In this embodiment, a front scraper is installed on the front side of the oil filter plate 31, and a rear scraper is installed on the rear side of the oil filter plate 31. Specifically, the front scraper is a front scraper 6, and the rear scraper is a rear scraper 7. Both the front scraper 6 and the rear scraper 7 are rubber seals. During the lifting and lowering process of the air inlet 3, the front scraper 6 is used to scrape the oil off the wall of the lower front plate 22, and the rear scraper 7 is used to scrape the oil off the wall of the back plate 23. Furthermore, to ensure smooth oil flow during scraping, a front oil leakage notch 61 is provided on the front edge of the front scraper 6, and a rear oil leakage notch 71 is provided on the rear edge of the rear scraper 7. (See [reference]). Figure 5 .

[0029] The air inlet 3 has a smoke inlet 30. An upper guide plate 5 is installed at the bottom front side of the oil filter plate 31. The upper guide plate 5 is vertically positioned above the smoke inlet 30. The upper guide plate 5 can reduce the height of the smoke inlet 30, so that the oil fumes are sucked in when there is still a certain distance between them and the lower box 2. On the one hand, this can reduce the condensation of oil on the surface of the lower box 2, and on the other hand, it can reduce the leakage of oil fumes.

[0030] In this embodiment, the front scraper 6 is clamped between the oil filter plate 31 and the upper guide plate 5, extending forward beyond the leading edge of the oil filter plate 31. The rear scraper 7 rests on the rear side of the oil filter plate 31 and is connected and fixed by a connector, extending backward beyond the rear edge of the oil filter plate 31. There are gaps between the front scraper 6 and the lower front plate 22, and between the rear scraper 7 and the back plate 23. During the descent of the air inlet 3, a certain degree of sealing structure is formed between the front scraper 6 and the lower front plate 22, achieving a motion seal (a line seal) to prevent oil fume leakage and pressure loss. Similarly, a motion seal is also formed between the rear scraper 7 and the back plate 23.

[0031] To further enhance the pressure relief effect, the bottom of the lower front plate 22 has a downwardly bent lower edge 221, which forms a certain degree of sealing structure with the upper guide plate 5; this is a line seal. Additionally, the top of the upper guide plate 5 has an upwardly bent upper edge 51, and the lower edge 221 and the upper edge 51 have opposing surfaces. In this embodiment, these opposing surfaces are parallel to each other. When the lower housing 2 is at its lowest position, the lower edge 221 and the upper edge 51 approach each other, forming a surface seal between the upper guide plate 5 and the lower front plate 22. This results in a better sealing effect, better preventing pressure relief and ensuring effective fume extraction.

[0032] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A liftable range hood, comprising a lower housing (2) and an air inlet (3), wherein the air inlet (3) is disposed on the lower housing (2) and is capable of lifting relative to the lower housing (2), and an oil cup (4) is installed at the bottom of the air inlet (3), characterized in that: The lower housing (2) has an air intake channel (21) for the air intake body (3) to rise and fall. The air intake body (3) has a scraper. During the rising and falling of the air intake body (3), the scraper can scrape the oil on the inner wall of the air intake channel (21) into the oil cup (4). The lower housing (2) has a lower front plate (22), which forms the front wall of the air intake channel (21). The air intake body (3) has a sliding mechanism that moves with the air intake body (3). The mounting plate moves synchronously and is located on the rear side of the lower front plate (22). The scraper includes a front scraper installed on the front side of the mounting plate. The front scraper is used to scrape the oil on the wall of the lower front plate (22) into the oil cup (4). The mounting plate is an oil filter plate (31) located on the top of the air inlet body (3). The oil filter plate (31) is inclined downward from front to back. The air inlet body (3) has a smoke inlet (30). An upper guide plate (5) is installed at the bottom front side of the oil filter plate (31). The upper guide plate (5) is vertically arranged above the smoke inlet (30). The front scraper is a front scraper (6) installed between the oil filter plate (31) and the upper guide plate (5). The bottom of the lower front plate (22) has a lower folded edge (221) that bends backward and downward. The top of the upper guide plate (5) has an upper folded edge (51) that bends forward and upward. The lower folded edge (221) and the upper folded edge (51) have opposing surfaces. When the lower housing (2) is in the lowest position, the opposing surfaces of the lower folded edge (221) and the upper folded edge (51) abut or approach each other to form a surface seal between the upper guide plate (5) and the lower front plate (22). The upper housing (1) is included. The lower housing (2) is located on the upper housing (1). A fan system (8) is installed inside the upper housing (1).

2. The lifting range hood according to claim 1, characterized in that: The lower front plate (22) has a vertical surface that mates with the front scraper.

3. The lifting range hood according to claim 1, characterized in that: The lower edge of the lower front plate (22) extends downward and backward with a lower folded edge (221), and the projection of the edge of the lower folded edge (221) in the vertical direction falls into the oil cup (4).

4. The lifting range hood according to claim 1, characterized in that: The front scraper (6) has a front oil leakage notch (61) on its front side edge.

5. The lifting range hood according to any one of claims 1 to 4, characterized in that: The lower housing (2) has a back plate (23), and the air inlet (3) has an oil filter plate (31) that moves synchronously with the air inlet (3). The oil filter plate (31) is located on the front side of the back plate (23). The scraper includes a rear scraper installed on the rear side of the oil filter plate (31). The rear scraper is used to scrape the oil on the wall of the back plate (23) into the oil cup (4).

6. The lifting range hood according to claim 5, characterized in that: The back plate (23) forms the rear wall of the air inlet channel (21), and the projection of the lower edge of the back plate (23) in the vertical direction falls into the oil cup (4).

7. The lifting range hood according to claim 6, characterized in that: The rear scraper is a rear scraper (7) installed on the rear side of the oil filter plate (31), and the rear edge of the rear scraper (7) has a rear oil leakage notch (71).

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