Integrated range hood

Abstract

An integrated range hood comprises an upper box body and a lower box body, a fan frame is installed in the upper box body, a cooking module is integrated on the lower box body, a door body is installed on the front face of the cooking module, the lower box body and the fan frame are matched in a guiding mode through a vertically-arranged guide rail, and the lower box body is driven by a driving mechanism to do lifting motion relative to the upper box body. A fan frame bottom plate is installed at the bottom of the front side of the fan frame, an installation cavity is formed between the fan frame bottom plate and the top of the lower box body, the driving output end of the driving mechanism is installed in the installation cavity, the driving output end is vertically downward and is fixed to the top of the lower box body, and the gravity center of the lower box body is arranged on the rear side of the driving output end. A door body of the cooking module is arranged on the front side of the driving output end. The driving mechanism of the integrated range hood is arranged between the gravity center of the load and the door body of the cooking module, so that the arrangement of the driving mechanism in a small space is realized, the stress of the guide rail during normal operation can be reduced, the instant impact stability when the door of the steaming oven is opened can be considered, and the stable operation of the system can be ensured.

Description

Technical Field

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

[0002] Existing range hoods are typically limited in function, primarily used to remove cooking fumes. Steam ovens and other cooking appliances, as another category of kitchen appliances, are mainly used for heating, baking, and steaming food. Small kitchens have limited space and cannot accommodate multiple cooking appliances and range hoods simultaneously. Therefore, range hoods integrating cooking modules were invented. These integrated range hoods employ a lifting structure, consisting of an upper and lower housing. A drive mechanism connects the upper and lower housings, causing the lower housing to move up and down relative to the upper housing. The upper and lower housings are connected by guide rails located at the rear corners of the fan frame. The cooking module is integrated into the lower housing. Due to the large size and weight of the cooking module, the center of gravity of the lower housing, and consequently the load center of the drive mechanism, is biased towards the front of the unit. The stability of the mechanism depends on the stress on the guide rails. Stress analysis of the guide rails reveals that placing the drive mechanism directly on the guide rail plane is not optimal. Force analysis shows that the guide rail is mainly subjected to the torque generated by the weight of the lower housing and the pull force of the drive mechanism's push rod. The weight of the lower housing and the pull force of the drive mechanism on the load are a pair of constant balanced forces. The magnitude of the torque on the guide rail is closely related to the position of the force application point of the drive mechanism and the center of gravity of the load. Therefore, it is necessary to design the installation position of the drive mechanism in a reasonable way to improve the stress condition of the guide rail and extend its service life. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an integrated range hood that can reduce the torque on the guide rail and the cooking module when it is opened, in light of the above-mentioned existing technology.

[0004] 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 installed inside the upper box, and a cooking module is integrated on the lower box. A door is installed on the front of the cooking module. The lower box and the fan frame are guided and cooperated by vertically arranged guide rails. The lower box moves up and down relative to the upper box under the drive of a drive mechanism. The characteristic is that: a fan frame base plate is installed at the bottom front side of the fan frame, and an installation cavity is formed between the fan frame base plate and the top of the lower box. The drive output end of the drive mechanism is installed in the installation cavity, and the drive output end is vertically downward and fixed to the top of the lower box. The center of gravity of the lower box is located behind the drive output end of the drive mechanism, and the door of the cooking module is located in front of the drive output end.

[0005] The drive mechanism can have various structures. Preferably, the drive mechanism is an electric push rod, and the drive output end of the electric push rod is vertically arranged and installed on the top of the lower housing.

[0006] To provide better guidance, the guide rails are installed at the left and right rear corners of the wind turbine frame.

[0007] In order to enable the lower housing to move smoothly relative to the upper housing, a connecting plate is installed on the top of the lower housing. The connecting plate is located on the outside of the fan frame and is guided and engaged with the fan frame through the guide rail.

[0008] Further preferably, the distance between the drive output end of the drive mechanism and the center of gravity of the lower box is greater than the distance between the drive output end and the door of the cooking module.

[0009] Further optimized, the torque experienced by the guide rail during operation is opposite in direction to the torque generated on the guide rail by the instantaneous force of the cooking module opening the door, and the absolute value of the torque experienced by the guide rail during operation is greater than the absolute value of the torque generated on the guide rail by the instantaneous force of the cooking module opening the door. This configuration can significantly reduce the forces experienced by the guide rail during operation and door opening, reduce the total torque on the guide rail, and ensure stable system operation.

[0010] In order to effectively exhaust the fumes, an oil fume extraction fan is installed inside the fan frame. An air inlet channel is provided between the rear side wall of the cooking module and the back panel of the lower box, and the air inlet channel is connected to the air inlet of the oil fume extraction fan.

[0011] In a further preferred embodiment, the fume extractor has a front air inlet and a rear air inlet, the front air inlet being an auxiliary air inlet and the rear air inlet being the main air inlet. Most of the airflow flowing out of the air inlet channel flows vertically upward to the rear air inlet, while a small portion of the airflow flowing out of the air inlet channel is guided to the front air inlet through the fan frame base plate.

[0012] To facilitate the direction of airflow to the front air inlet, the fan frame base plate is inclined downwards from front to back.

[0013] There can be various cooking modules. Preferably, the cooking module is a steam oven, a regular oven, or a steam oven.

[0014] Compared with the prior art, the advantages of this utility model are as follows: The integrated range hood forms an installation cavity between the fan frame base plate and the lower box. The drive output end of the drive mechanism is installed in the installation cavity, vertically downward and fixed to the top of the lower box. The center of gravity of the lower box is located behind the drive output end of the drive mechanism, and the door of the cooking module is located in front of the drive output end. That is, the drive mechanism is arranged between the center of gravity of the load and the door of the cooking module. On the one hand, it realizes the arrangement of the drive mechanism in a small space. On the other hand, it can reduce the force on the guide rail during normal operation and take into account the instantaneous impact stability when the oven door is opened. The system can operate stably by optimizing the force on the guide rail. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model (lower housing in raised state);

[0016] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the range hood.

[0017] Figure 3 for Figure 1 The diagram shown is a structural schematic of the range hood with the cooking module door open.

[0018] Figure 4 for Figure 1 The diagram shown is a schematic of the internal structure of the range hood.

[0019] Figure 5 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model (lower casing in descending state);

[0020] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the range hood.

[0021] Figure 7 for Figure 5 The diagram shows the internal structure of the range hood. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 7 As shown, the integrated range hood of this embodiment includes an upper housing 1 and a lower housing 2. A fan frame 3 is installed inside the upper housing 1, and a range hood fan 8 is installed inside the fan frame 3. A cooking module 4 is integrated on the lower housing 2. The cooking module 4 can be a steam oven, a regular oven, or a steam oven, etc. A door 41 is installed on the front of the cooking module 4, and the door 41 adopts a pull-down structure. Figure 2 The direction indicated by the middle arrow A and Figure 6The direction indicated by arrow B is forward. An air inlet channel 9 is provided between the rear wall of the cooking module 4 and the back panel of the lower housing 2. The air inlet channel 9 is connected to the air inlet of the range hood 8. When the range hood is working, the fumes enter the range hood 8 through the air inlet channel 9 and are finally discharged to the outside of the range hood. In this embodiment, the range hood 8 has a front air inlet 81 and a rear air inlet 82. The front air inlet 81 is an auxiliary air inlet, and the rear air inlet 82 is the main air inlet. Most of the airflow from the air inlet channel 9 flows vertically upward to the rear air inlet 82, and a small portion of the airflow from the air inlet channel 9 is guided to the front air inlet 81 through the fan frame base plate 31.

[0024] The lower housing 2 and the fan frame 3 are guided and engaged by vertically arranged guide rails 5. Specifically, a connecting plate 21 is installed on the top of the lower housing 2, and the connecting plate 21 is located on the outside of the fan frame 3 and is guided and engaged with the fan frame 3 by the guide rails 5. The guide rails 5 are installed at the left and right rear corners of the fan frame 3, making the guiding structure more stable.

[0025] The lower housing 2 and cooking module 4 move synchronously up and down relative to the upper housing 1 under the drive of the drive mechanism 6. A fan frame base plate 31 is installed at the bottom front side of the fan frame 3, and the fan frame base plate 31 is inclined downward from front to back. A mounting cavity 7 is formed between the fan frame base plate 31 and the top of the lower housing 2, and the drive output end of the drive mechanism 6 is installed in the mounting cavity 7. In this embodiment, the drive mechanism 6 is an electric push rod, and the drive output end of the electric push rod is vertically set and installed on the top of the lower housing 2.

[0026] In this embodiment, the electric push rod adopts an integrated design of turbine and nut. The center of gravity of the lower housing 2 is located behind the drive output end of the drive mechanism 6, and the door 41 of the cooking module 4 is located in front of the drive output end. The distance between the drive output end of the drive mechanism 6 and the center of gravity of the lower housing 2 is greater than the distance between the drive output end and the door 41 of the cooking module 4. At this time, the torque on the guide rail 5 during operation is opposite in direction to the torque generated by the instantaneous force of the cooking module 4 opening on the guide rail 5, and the absolute value of the torque on the guide rail 5 during operation is greater than the absolute value of the torque generated by the instantaneous force of the cooking module 4 opening on the guide rail.

[0027] Because the cooking module 4 is integrated on the lower housing 2, the center of gravity of the lower housing, i.e., the load center, shifts significantly forward. In this embodiment, the drive mechanism 6 is moved forward to be close to the load center. Utilizing the triangular area formed between the fan frame base plate 31 and the top of the lower housing 2, a small-volume, high-thrust push rod with an integrated turbine nut is used within the narrow triangular area, i.e., the mounting cavity 7, to drive the entire load lifting and lowering motion. In this embodiment of the integrated range hood, the distance from the load center to the drive force application surface is 80mm, and the distance from the drive force application surface to the door handle is 55.8mm. The torque on the guide rail is as follows: M1≈28N.m; M2≈-5N.m; (the direction is opposite to M1, so a negative value is taken). Therefore, the total torque on the guide rail is: M=M1+M2=23N.m. This significantly reduces the force on the guide rail during operation and when the door is opened, while also ensuring the stability of the cooking module 4 during the instantaneous impact when the door is opened, thus improving the working stability of the range hood.

[0028] 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 housing (1) and a lower housing (2), wherein a fan frame (3) is installed inside the upper housing (1), and a cooking module (4) is integrated on the lower housing (2), a door (41) is installed on the front of the cooking module (4), the lower housing (2) and the fan frame (3) are guided and cooperated by vertically arranged guide rails (5), and the lower housing (2) moves up and down relative to the upper housing (1) under the drive of a drive mechanism (6), characterized in that: The front bottom of the fan frame (3) is provided with a fan frame bottom plate (31), and an installation cavity (7) is formed between the fan frame bottom plate (31) and the top of the lower cabinet (2). The driving output end of the driving mechanism (6) is installed in the installation cavity (7) and is vertically downward and fixed on the top of the lower cabinet (2). The center of gravity of the lower cabinet (2) is located at the rear side of the driving output end of the driving mechanism (6), and the door body (41) of the cooking module (4) is located at the front side of the driving output end.

2. The integrated range hood according to claim 1, characterized in that: The driving mechanism (6) is an electric push rod, and the driving output end of the electric push rod is vertically arranged and installed on the top of the lower cabinet (2).

3. The integrated range hood according to claim 1, wherein: The guide rail (5) is installed at the left rear corner and the right rear corner of the fan frame (3).

4. The integrated range hood according to claim 1, wherein: The top of the lower cabinet (2) is provided with a connecting plate (21), and the connecting plate (21) is located on the outer side of the fan frame (3) and is guided and matched with the fan frame (3) through the guide rail (5).

5. The integrated range hood according to claim 1, wherein: The distance between the driving output end of the driving mechanism (6) and the center of gravity of the lower cabinet (2) is greater than the distance between the driving output end and the door body (41) of the cooking module (4).

6. The integrated range hood according to claim 5, wherein: When the guide rail (5) is running, the torque acting on the guide rail (5) is opposite to the torque direction generated by the momentary force of the cooking module (4) opening the door, and the absolute value of the torque acting on the guide rail (5) is greater than the absolute value of the torque generated by the momentary force of the cooking module (4) opening the door.

7. The integrated range hood according to claim 1, wherein: The fan frame (3) is internally provided with an oil fume extractor (8), and an air inlet channel (9) is arranged between the rear wall of the cooking module (4) and the back plate of the lower cabinet (2). The air inlet channel (9) is in communication with the air inlet of the oil fume extractor (8).

8. The integrated range hood according to claim 7, characterized in that: The oil fume extractor (8) has a front air inlet (81) and a rear air inlet (82). The front air inlet (81) is an auxiliary air inlet, and the rear air inlet (82) is a main air inlet. Most of the airflow flowing out of the air inlet channel (9) flows vertically upward to the rear air inlet (82), and a small part of the airflow flowing out of the air inlet channel (9) is guided to the front air inlet (81) through the fan frame bottom plate (31).

9. The integrated range hood according to claim 8, characterized in that: The fan frame bottom plate (31) is inclined downward from front to back.

10. The integrated range hood according to any one of claims 1 to 9, characterized in that: The cooking module (4) is a steamer, an oven or a steaming oven.

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