Integrated range hood

Abstract

An upper box body is internally provided with a fan frame, the fan frame is internally provided with an oil smoke suction fan, a lower box body is integrated with a cooking module, the cooking module is provided with an inner container, an air inlet channel is formed between the back of the cooking module and the rear wall of the lower box body, and the middle of a back plate of the inner container protrudes backwards and outwards so that the cooking module can be provided with a corresponding rear protruding part. The left-right width of an outlet of the air inlet channel is smaller than the left-right width of the position, with the narrowest front-back depth, of the air inlet channel. The air inlet channel of the integrated range hood is a special-shaped air inlet channel, and the air inlet is subjected to pressure equalizing treatment through the design of wide lower part and narrow upper part, so that loss caused by eddy current generated by sudden expansion of the air inlet area at the joint of the upper part of the air inlet channel and the fan frame is prevented, the air inlet speed in the width direction of the air inlet is consistent, and lampblack on two sides of the range hood is sucked into the air inlet; on the premise that the oil smoke suction effect and the cooking effect are guaranteed, the range hood is smaller in size, so that it is guaranteed that the product is better matched with a cabinet, and the cooking space of a user is better guaranteed.

Description

Technical Field

[0001] This utility model relates to a range hood, and more particularly to an integrated range hood. Background Technology

[0002] Chinese kitchens are generally small, and with the improvement of living standards, range hoods, stoves, dishwashers, and steam ovens have become standard equipment. However, due to space constraints, some kitchens may not have room for a steam oven. Some users will try to balance the necessity of a steam oven with other appliances such as sterilizers and microwave ovens, and choose to install one. Therefore, how to fit more home appliances in a limited space is a challenge.

[0003] Some users choose to install integrated cooktops, combining the range hood, cooktop, steam oven, and oven into one countertop. While this frees up wall cabinet space, the height of wall cabinets makes them inconvenient to use and results in low utilization. Other users might opt ​​for countertop steam ovens. However, countertop steam ovens are smaller, cheaper, and less powerful than built-in ones. Countertop kettles and rice cookers are standard in most households, so adding a countertop steam oven would make the countertop cramped and unsightly. Some users choose to place built-in steam ovens under the countertop. This takes up lower cabinet space and offers a poor user experience, requiring bending over to place the steaming trays and squatting to clean the interior, plus the inconvenience of being hit by steam when opening the door. Therefore, some built-in steam ovens are placed in tall cabinets, which are often unsuitable for small kitchens. In conclusion, there is currently no perfect solution to the problem of users with limited kitchen space needing a steam oven function while also ensuring product compatibility with cabinetry. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an integrated range hood that can reduce the size of the range hood while ensuring the oil fume extraction and cooking effects, in light of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an integrated range hood, including an upper box and a lower box, wherein a fan frame is provided inside the upper box, and a range hood fan is installed inside the fan frame. The lower box is characterized in that a cooking module is integrated thereon, the cooking module has an inner liner, and an air inlet channel is formed between the back of the cooking module and the rear wall of the lower box. The back plate of the inner liner protrudes backward and outward in the middle of its height direction, so that the cooking module has a corresponding rearward protrusion. Correspondingly, the front-to-back depth of the air inlet channel is the narrowest in the middle, and the left-to-right width of the air inlet channel outlet is smaller than the left-to-right width of the narrowest part of the front-to-back depth of the air inlet channel.

[0006] Preferably, the front-to-back depth g at the outlet of the air inlet channel, the narrowest front-to-back depth m of the air inlet channel, the left-to-right width L2 at the outlet of the air inlet channel, and the left-to-right width L1 corresponding to the narrowest front-to-back point of the air inlet channel satisfy L2×g>L1×m. With this configuration, since the airflow velocity is faster at the narrowest point, the outlet area of ​​the air inlet channel is larger than the cross-sectional area of ​​the narrowest front-to-back point of the air inlet channel, which can reduce fan noise.

[0007] Further optimization involves ensuring that the ratio of the left-right width L2 at the outlet of the air inlet channel to the left-right width L1 corresponding to the narrowest point at the front and rear of the air inlet channel satisfies the range of 0.5 < L2 / L1 < 0.8. This setting, with the L2 / L1 ratio within the aforementioned range, allows for smooth airflow within the air inlet channel and keeps the fan noise within a reasonable range.

[0008] Further preferably, the ratio of the front-to-back depth g at the outlet of the air inlet channel to the narrowest front-to-back depth m of the air inlet channel satisfies the range of 2 < g / m < 4. Within the above ratio range, the larger the g / m ratio, that is, the larger the inclination angle of the air inlet channel, the smoother the airflow, the better the oil fume extraction effect, and the lower the noise.

[0009] To improve the fume extraction effect, the fume extraction fan includes a front air inlet and a rear air inlet, and the sum of the air inlet area S1 of the front air inlet and the air inlet area S2 of the rear air inlet satisfies L1×m>S1+S2.

[0010] Further preferably, the front and rear depths g at the outlet of the air inlet channel and the front and rear depths n at the inlet of the air inlet channel satisfy g > n.

[0011] To ensure that the middle part of the inner liner has a reasonable degree of outward convexity, the ratio of the minimum front-to-back depth x to the maximum front-to-back depth c of the inner liner must satisfy the range of 0.6 < x / c < 0.9.

[0012] Preferably, a hot air blower is installed on the outer side of the left or right side wall of the inner liner. This arrangement ensures that the hot air blown by the blower easily reaches the opposite side walls of the inner liner, guaranteeing a uniform temperature distribution within the liner.

[0013] Further preferred, the width of the air intake channel gradually decreases along the airflow direction.

[0014] As a preferred embodiment of any of the above solutions, the cooking module is provided with an installation cavity above it that is isolated from the air inlet channel, and a drive mechanism capable of driving the lower housing to move up and down relative to the upper housing is installed in the installation cavity.

[0015] In order to ensure that the fumes are smoothly drawn into the fume extraction fan, the lower housing has a fume inlet, which is connected to the air inlet of the fume extraction fan through the air inlet channel.

[0016] Compared with the prior art, the advantages of this utility model are as follows: The air intake channel of this integrated range hood is narrowest in the middle, and the left and right width at the outlet of the air intake channel is smaller than the left and right width at the narrowest point of the air intake channel. The air intake channel forms an irregular air intake channel. The design of the air intake channel being wider at the bottom and narrower at the top can evenly treat the air inlet and prevent the loss caused by the sudden expansion of the air intake area at the connection between the upper part of the air intake channel and the fan frame. The width at the bottom and narrowness at the top also makes the air intake speed consistent in the width direction of the air inlet, ensuring that the oil fumes on both sides of the stove can also be drawn into the air inlet. Under the premise of ensuring the oil fume extraction effect and cooking effect, the size of the range hood is made smaller, so as to ensure that the product matches the cabinet better and better protects the user's cooking space. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model;

[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 shown is a structural schematic of a range hood (with the cooking module door panel removed).

[0020] Figure 4 for Figure 1 The diagram shown is a detailed structural diagram of the range hood.

[0021] Figure 5 for Figure 1 The diagram shows a cross-sectional view of the range hood.

[0022] Figure 6 A schematic diagram showing the flow direction of hot air blown out by an existing hot air blower inside a conventional inner tank;

[0023] Figure 7 This is a schematic diagram showing the flow direction of hot air blown out by the hot air blower in the irregularly shaped inner liner according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram showing the flow direction of hot air blown out by the hot air blower in an embodiment of the present invention inside another irregularly shaped inner liner;

[0025] Figure 9 This is a schematic diagram of the structure of the fume extractor fan according to an embodiment of the present utility model;

[0026] Figure 10 for Figure 9 The diagram shows the structure of the fume extractor fan from another angle. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 4 As shown, the integrated range hood of this embodiment includes an upper housing 1 and a lower housing 2. A fan frame 3 is provided inside the upper housing 1, and a range hood fan 4 is installed inside the fan frame 3. Figure 9 and Figure 10 As shown, the fume extractor 4 is a centrifugal fan and has a front air inlet 41 and a rear air inlet 42. The rear air inlet 42 is the main air inlet and the front air inlet 41 is the auxiliary air inlet. The air inlet area S2 of the rear air inlet 42 is larger than the air inlet area S1 of the front air inlet 41.

[0029] The lower housing 2 integrates a cooking module 5, which has an inner liner 51. The cooking module 5 typically has a steam-bake mode. In this embodiment, a hot air blower 53 is installed on the outer side of the left side wall of the inner liner 51. The hot air blown by the hot air blower 53 enters the inner liner 51 to heat and cook the food inside the inner liner 51.

[0030] An air intake channel 6 is formed between the back of the cooking module 5 and the rear wall of the lower housing 2. The lower housing 2 has a smoke inlet 21, which is connected to the air inlet of the range hood 4 through the air intake channel 6. The back panel of the inner liner 51 protrudes backward and outward in the middle of its height direction, giving the cooking module 5 a corresponding rear protrusion 52. Correspondingly, the front-to-back depth of the air intake channel 6 is the narrowest in the middle. Thus, the air intake channel 6 forms an irregularly shaped air intake channel, which has a wide-narrow-wide characteristic from bottom to top. This can evenly distribute the pressure at the air inlet and prevent losses caused by vortices due to the sudden expansion of the air intake area at the connection between the upper part of the air intake channel and the fan frame. The design of the lower half of the air intake channel being wider at the bottom and narrower at the top also ensures that the air intake speed is consistent in the width direction of the air inlet, ensuring that the oil fumes on both sides of the stove can also be drawn into the air inlet. Under the premise of ensuring the oil fume extraction effect and cooking effect, the size of the range hood is made smaller to ensure that the product matches the cabinet better and better protects the user's cooking space.

[0031] In this embodiment, the front-to-back depth g at the outlet of the air inlet channel 6 and the front-to-back depth n at the inlet of the air inlet channel 6 satisfy g > n. The ratio of the front-to-back depth g at the outlet of the air inlet channel 6 to the narrowest front-to-back depth m of the air inlet channel 6 satisfies 2 < g / m < 4. The larger the g / m ratio, that is, the larger the inclination angle of the air inlet channel 6, the smoother the airflow, the better the oil fume extraction effect, and the lower the noise.

[0032] like Figure 4As shown, along the airflow direction, i.e., from bottom to top, the width of the air inlet channel 6 gradually decreases, exhibiting a wider bottom and narrower top characteristic in its left and right width direction. The left and right width at the outlet of the air inlet channel 6 is smaller than the left and right width at the narrowest point of the air inlet channel 6. The ratio of the left and right width L2 at the outlet of the air inlet channel 6 to the left and right width L1 corresponding to the narrowest point of the air inlet channel 6 satisfies the range of 0.5 < L2 / L1 < 0.8. This allows the airflow to flow smoothly within the air inlet channel 6 and keeps the fan noise within a reasonable range.

[0033] like Figure 5 As shown, the front-to-back depth g at the outlet of the air inlet channel 6, the narrowest front-to-back depth m of the air inlet channel 6, the left-to-right width L2 at the outlet of the air inlet channel 6, and the left-to-right width L1 corresponding to the narrowest front-to-back point of the air inlet channel 6 satisfy L2×g>L1×m. Since the airflow velocity is higher at the narrowest point, the outlet area of ​​the air inlet channel is larger than the cross-sectional area at the narrowest front-to-back point of the air inlet channel, which can reduce fan noise. Additionally, L1×m>S1+S2 must also be satisfied to ensure effective fume extraction.

[0034] like Figures 5 to 8 The product's front-to-back depth dimension A is equal to the sum of the maximum front-to-back depth c of the inner liner 51, the narrowest front-to-back depth m of the air intake channel, and the door depth. The width of the inner liner 51 is a, and the height of the inner liner 51 is b. The common depth of wall cabinets in the market is 350mm, and the common tray size is 8-inch. To ensure A ≤ 350mm and c ≥ 8-inch trays, the narrowest front-to-back depth m of the air intake channel 6 will inevitably be compressed. The ratio of the minimum front-to-back depth x of the inner liner 51 to the maximum front-to-back depth c satisfies the range 0.6 < x / c < 0.9. Where c = x + y, x represents the front-to-back depth of the left and right side walls of the inner liner 51, and y represents the distance the middle of the inner liner 51 protrudes backward. Figure 6 In y=0, Figure 7 The y-value in the middle is greater than Figure 6 The value of y in the equation. When y = 0, the hot air blown out by the left-side hot air blower easily hits the back cover of the inner liner and returns, making it difficult to blow to the other side of the inner liner, i.e., the right side. This makes it impossible to guarantee the uniformity of the temperature field inside the inner liner. Therefore, in the market, when the depth dimension x of the inner liner is fixed, the width a of the inner liner is relatively small. However, when the width a of the inner liner and the airflow of the hot air blower are fixed, the side wall of the inner liner opposite to the hot air blower can also be blown with hot air. For example... Figure 7 and Figure 8 As shown, the larger the y value, the farther the hot air blows, and the better the uniformity of the temperature field can be guaranteed.

[0035] like Figure 5As shown, the cooking module 5 has an installation cavity 7 above it, which is isolated from the air inlet channel 6. A drive mechanism 8 is installed in the installation cavity 7 to drive the lower housing 2 to move up and down relative to the upper housing 1. Since the installation cavity 7 is isolated from the air inlet channel 6, the oil fumes from the air inlet channel 6 can prevent contamination of the drive mechanism 8. The drive mechanism 8 can be any existing lifting drive mechanism; in this embodiment, the drive mechanism is an electric push rod.

[0036] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An integrated range hood, comprising an upper cabinet (1) and a lower cabinet (2), wherein a fan frame (3) is arranged inside the upper cabinet (1), and a range hood fan (4) is arranged inside the fan frame (3), characterized in that: The lower cabinet (2) is integrated with a cooking module (5), the cooking module (5) has an inner container (51), an air inlet channel (6) is formed between the back of the cooking module (5) and the rear wall of the lower cabinet (2), the back plate of the inner container (51) is outwardly convex at the middle part in the height direction, so that the cooking module (5) has a corresponding rear convex part (52), correspondingly, the front-to-rear depth of the middle part of the air inlet channel (6) is the narrowest, and the left-to-right width of the outlet of the air inlet channel (6) is smaller than the left-to-right width of the narrowest part of the air inlet channel (6).

2. The integrated range hood according to claim 1, characterized in that: The front-to-rear depth g of the outlet of the air inlet channel (6), the narrowest front-to-rear depth m of the air inlet channel (6), the left-to-right width L2 of the outlet of the air inlet channel (6), and the corresponding left-to-right width L1 of the narrowest part of the air inlet channel (6) satisfy L2×g>L1×m.

3. The integrated range hood according to claim 2, wherein: The ratio of the left-to-right width L2 of the outlet of the air inlet channel (6) to the corresponding left-to-right width L1 of the narrowest part of the air inlet channel (6) satisfies 0.5<L2 / L1<0.

8.

4. The integrated range hood according to claim 2, wherein: The ratio of the front-to-rear depth g of the outlet of the air inlet channel (6) to the narrowest front-to-rear depth m of the air inlet channel (6) satisfies 2<g / m<4.

5. The integrated range hood according to claim 2, wherein: The oil fume extractor (4) includes a front air inlet (41) and a rear air inlet (42), the sum of the air inlet area S1 of the front air inlet (41) and the air inlet area S2 of the rear air inlet (42) satisfies L1×m>S1+S2.

6. The integrated range hood of claim 1, wherein: The front-to-rear depth g of the outlet of the air inlet channel (6) and the front-to-rear depth n of the inlet of the air inlet channel (6) satisfy g>n.

7. The integrated range hood according to claim 1, wherein: The ratio of the minimum front-to-rear depth x of the inner container (51) to the maximum front-to-rear depth c satisfies 0.6<x / c<0.

9.

8. The integrated range hood according to claim 7, characterized in that: A hot air blower (53) is installed on the outside of the left side wall or the outside of the right side wall of the inner container (51).

9. The integrated range hood according to claim 1, wherein: Along the airflow direction, the left-to-right width of the air inlet channel (6) gradually decreases.

10. The integrated range hood according to any one of claims 1 to 9, characterized in that: The upper part of the cooking module (5) is provided with a mounting cavity (7) which is isolated from the air inlet channel (6), and a driving mechanism (8) which can drive the lower cabinet (2) to move up and down relative to the upper cabinet (1) is installed in the mounting cavity (7).

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