Low-resistance smoke exhaust system

Abstract

The utility model provides a low-resistance smoke exhaust system, which relates to the field of kitchen electric equipment and comprises a public flue, a first pipeline, a check valve and an indoor fan. The public flue, the first pipeline and the indoor fan are sequentially connected, the check valve is arranged between the public flue and the first pipeline, an air outlet of the indoor fan is connected with the end, away from the check valve, of the first pipeline, and the projection of the air outlet to the check valve in the horizontal direction is at least partially overlapped with the check valve. Therefore, turning paths are reduced and energy loss is reduced in the process that oil fume in a kitchen enters the public flue, so that under the condition that the rotating speed is not changed, the air volume of a fume exhaust system is larger, and the oil fume suction effect is better.

Description

Technical Field

[0001] The present application relates to the field of kitchen appliances, and in particular to a low-resistance smoke exhaust system. Background Art

[0002] The range hood is a device used in the kitchen. The flue of the range hood is used to discharge the oil smoke and odor absorbed by the range hood to the outside to keep the kitchen air fresh. The flue resistance of the range hood refers to the resistance encountered when the oil smoke is discharged. The size of the flue resistance will affect the effect of the range hood, the exhaust efficiency, and even cause the oil smoke to be unable to be discharged, affecting the air quality in the kitchen.

[0003] The smoke exhaust resistance includes resistance factors such as the smoke pipe, check valve, flue, and startup rate. In order to ensure the exhaust volume to meet the smoke exhaust effect requirements, the range hood runs at a high speed. In particular, many users use the stir-fry gear or automatic gear when cooking, which results in generally loud noise and unsatisfactory smoke exhaust effect. Utility Model Content

[0004] In order to solve one of the above problems, the present application provides a low-resistance smoke exhaust system, which reduces the smoke exhaust resistance coefficient and the smoke exhaust noise by setting the position of the check valve and the pipeline, thereby improving the smoke exhaust effect of the range hood.

[0005] The present application provides a low-resistance smoke exhaust system, comprising a common flue, a first pipeline, a check valve, and an indoor fan;

[0006] The public flue, the first pipeline and the indoor fan are connected in sequence, and the check valve is arranged between the public flue and the first pipeline.

[0007] The air outlet of the indoor fan is connected to one end of the first pipe away from the check valve, and the projection of the air outlet to the check valve in the horizontal direction at least partially overlaps with the check valve.

[0008] In a possible implementation manner, the fluid can flow through the air outlet of the indoor fan and the check valve, the check valve is coaxially arranged with the air outlet of the indoor fan, and the first pipeline is horizontally arranged.

[0009] In a possible implementation manner, it also includes an electric valve and an indoor and outdoor joint adjustment control device, the electric valve is mounted on the check valve, the indoor and outdoor joint adjustment control device is connected to the electric valve and the indoor fan, and the indoor and outdoor joint adjustment control device can adjust the speed of the indoor fan and the opening of the electric valve.

[0010] A possible implementation manner further includes a smoke collecting device and a second pipe, wherein the second pipe is connected to the air inlet of the indoor fan, and the second pipe is arranged between the indoor fan and the smoke collecting device.

[0011] In a possible implementation manner, a noise reduction device is further included, and the noise reduction device is arranged in the smoke collecting device, and the noise reduction device is sleeved on the second pipe.

[0012] In a possible implementation manner, the indoor and outdoor joint adjustment control device includes an indoor control device and an outdoor control device, the indoor control device is connected to the outdoor control device, and the indoor control device is integrated with the indoor fan.

[0013] In a possible implementation manner, the indoor and outdoor joint adjustment control device includes an indoor control device and an outdoor control device, the indoor control device is connected to the outdoor control device, and the indoor control device is arranged outside the indoor fan.

[0014] In a possible implementation manner, the adjustment angle of the electric valve is 0 degrees to 90 degrees.

[0015] In a possible implementation manner, the driving device of the indoor fan is a DC motor.

[0016] In a possible implementation manner, the indoor fan is provided with an air outlet hood, and the first duct is sleeved on the air outlet hood.

[0017] The present application provides a low-resistance smoke exhaust system, which has the following beneficial effects:

[0018] The present application provides a low-resistance smoke exhaust system, which relates to the field of kitchen appliances, including a public flue, a first pipe, a check valve, and an indoor fan; the public flue, the first pipe, and the indoor fan are connected in sequence, the check valve is arranged between the public flue and the first pipe, the air outlet of the indoor fan is connected to one end of the first pipe away from the check valve, and the projection of the air outlet to the check valve in the horizontal direction at least partially overlaps with the check valve. In this way, the turning path is reduced in the process of kitchen fumes entering the public flue, and energy loss is reduced, so that the smoke exhaust system has a larger air volume and a better fume absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure inside a kitchen using the smoke exhaust system in an embodiment of the utility model;

[0021] Figure 2This is a structural schematic diagram of a noise reduction box in an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the relationship between air volume and pressure of a range hood provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of a multi-floor kitchen using the smoke exhaust system provided in an embodiment of the present application;

[0024] The following is a supplementary description of the attached drawings:

[0025] 10. Auxiliary fan; 11. Auxiliary pipeline; 12. Flue base; 13. Public flue; 14. Fire damper; 15. Electric valve; 16. First pipeline; 20. Indoor fan; 21. Second pipeline; 30. Smoke collection device; 40. Control box. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0028] An oil cup buckle assembly provided in an embodiment of the present application is described below in conjunction with the accompanying drawings. The oil cup buckle assembly of the present application is particularly suitable for close-suction range hoods.

[0029] See also Figure 1-4 This embodiment provides a low-resistance smoke exhaust system, including a common flue 13, a first pipe 16, a check valve, and an indoor fan 20; the common flue 13, the first pipe 16, and the indoor fan 20 are connected in sequence, the check valve is arranged between the common flue 13 and the first pipe 16, the air outlet of the indoor fan 20 is connected to one end of the first pipe 16 away from the check valve, and the projection of the air outlet to the check valve in the horizontal direction at least partially overlaps with the check valve. The projection of the air outlet to the check valve in the horizontal direction at least partially overlaps with the check valve, which reduces the resistance of the fluid passing through the first pipe 16, helps the smoke exhaust system to exhaust smoke more effectively, improves the smoke exhaust efficiency, and helps to reasonably arrange the smoke exhaust system in a limited space, thereby improving the space utilization rate.

[0030] Understandably, due to the existence of the rear end smoke exhaust resistance of the public flue 13, such as smoke pipes, check valves, flues, start-up rates and other resistance factors, in order to ensure that the exhaust volume meets the requirements of the smoke extraction effect, the fan size of the range hood is large and the operating speed is high, resulting in generally large noise. When the user is stir-frying in the kitchen, the noise will be even louder, so many users rarely use the stir-fry gear or automatic gear when cooking in order to reduce noise. At present, most range hood manufacturers use many active and passive noise reduction methods to reduce the noise of range hoods. Despite this, the current range hood noise is still relatively high, and the noise of the user's range hood when running is generally above 64dBA. The current noise status of range hoods is quite different from the user's expectations, especially for some kitchen and dining scenes, the noise requirements will be higher. Based on some survey data, the user's satisfactory noise value for range hoods is generally below 54dBA. In recent years, in order to achieve a significant reduction in range hood noise, a separate noise reduction technology has emerged in which the fan is placed on the ceiling. This technology can generally reduce the noise value of a conventional range hood by more than 54dBA when used by users. The noise of some range hoods can be reduced to 50dBA and below, but the installation and maintenance of ceiling fans are relatively complicated, especially for some users of gypsum boards. This is mainly because the size of the fan housing is relatively large, and the air volume and air pressure requirements of the range hood are determined by the size of the fan, which limits its application.

[0031] In the exemplary embodiment, in order to further reduce energy consumption, the present application adopts the ceiling separation noise reduction technology. The ceiling fan can reduce the turns of the original smoke pipe, thereby greatly reducing the smoke exhaust resistance of the range hood. When the same air volume is achieved, the smaller the resistance of the range hood, the lower the gear required to run.

[0032] The fire damper 14 is also included. The fire damper 14 is connected to the electric valve 15. The fire damper 14 is used to prevent smoke from spreading.

[0033] See also Figure 3Taking a 1.6m long smoke pipe with one turn as an example, the total resistance coefficient k is generally around 0.7. When a ceiling hood is used, the length of the smoke pipe is reduced and there is no turn, so the resistance coefficient will be greatly reduced, generally around 0.3. The original Q T The air volume needs to be run to the current level 10, while the indoor fan 20 is set behind the ceiling and runs at the current level 8, thereby reducing the energy consumption of the range hood operation.

[0034] Furthermore, the fluid can flow through the air outlet of the indoor fan 20 and the check valve, the check valve is coaxially arranged with the air outlet of the indoor fan 20, and the first pipe 16 is arranged horizontally. The fluid can flow smoothly through the first pipe 16, the resistance coefficient of the fluid in the pipe is reduced, the energy loss required for the fluid to flow is reduced, the energy consumption of the fluid flow is reduced, and the energy efficiency of the smoke exhaust system is improved.

[0035] In this embodiment, the projection of the air outlet of the indoor fan 20 on the check valve completely overlaps with the effective air outlet of the check valve. The greater the number of turns, the higher the resistance coefficient k. The resistance coefficient k is reduced compared with before, and the degree of reduction is relatively large. The first pipe 16 does not need to turn, thereby reducing the energy consumption of each driving device.

[0036] Furthermore, it also includes an electric valve 15 and an indoor and outdoor joint adjustment control device, the electric valve 15 is sleeved on the check valve, the indoor and outdoor joint adjustment control device is connected to the electric valve 15 and the indoor fan 20, and the indoor and outdoor joint adjustment control device can adjust the speed of the indoor fan 20 and the opening of the electric valve 15. The indoor and outdoor joint adjustment control device can intelligently adjust the speed of the indoor fan 20 and the opening of the electric valve 15, thereby realizing dynamic adjustment of the air volume.

[0037] Specifically, the indoor and outdoor joint adjustment control device includes an indoor control device and an outdoor control device, the indoor fan 20 includes a corresponding driving device and a sensor, the auxiliary fan 10 includes a corresponding driving device and a sensor, and the electric valve 15 also includes a corresponding driving device and a sensor. The indoor and outdoor joint adjustment control device can drive the driving devices of each part, and can also receive the electrical signals of each part to obtain corresponding information, perform corresponding internal and external joint adjustment algorithms, and adjust the speed or angle of each component.

[0038] Specifically, the smoke exhaust system includes a pipe assembly, which includes an auxiliary pipe 11, a common flue 13, a first pipe 16 and a second pipe 21. The fumes generated by the user in the kitchen can pass through the second pipe 21, the first pipe 16, the common flue 13 and the auxiliary pipe 11 in sequence, so that the fumes are discharged into the room.

[0039] Specifically, the auxiliary pipe 11 is arranged between the auxiliary fan 10 and the flue base 12, so that the auxiliary fan 10 is connected to the common flue 13, the common flue 13 is arranged between the flue base 12 and the fire damper 14, the first pipe 16 is arranged between the fire damper 14 and the indoor fan 20, the second pipe 21 is arranged between the smoke collection device 30 and the indoor fan 20, and the second pipe 21 is arranged inside the range hood.

[0040] Furthermore, it also includes a smoke collecting device 30 and a second pipe 21, the second pipe 21 is connected to the air inlet of the indoor fan 20, and the second pipe 21 is arranged between the indoor fan 20 and the smoke collecting device 30. The smoke collecting device 30 can effectively collect the oil smoke, and the second pipe 21 sends the collected oil smoke to the air inlet of the indoor fan 20, thereby improving the oil smoke purification efficiency and reducing the impact of the oil smoke on the indoor air.

[0041] In an exemplary embodiment, the second duct 21 is disposed inside the range hood, and the smoke collecting device 30 varies according to the models of different range hoods. The smoke collecting device 30 is exposed to the user's field of vision, and the smoke collecting device 30 is set at a suitable distance from the cooking stove, so that the coordination effect of each system is better, and the smoke collecting device 30 is connected to the second duct.

[0042] Optionally, the shape of the second pipe 21 may be circular, rectangular or other shapes.

[0043] Furthermore, a noise reduction device is included, which is arranged in the smoke collecting device 30 and sleeved on the second pipe 21. By arranging the noise reduction device, the noise generated by the indoor fan 20 and the smoke collecting device 30 can be effectively reduced, the indoor noise level can be reduced, and the user comfort can be improved.

[0044] Specifically, the noise reduction device may be a sound insulation material that wraps the pipe assembly, or may be a sound insulation cover, wherein the interior of the sound insulation cover may also be filled with sound insulation material.

[0045] Further, the indoor and outdoor joint control device includes an indoor control device and an outdoor control device, the indoor control device is connected to the outdoor control device, and the indoor control device is integrated with the indoor fan 20. The indoor control device and the outdoor control device can realize information exchange and data sharing, thereby realizing accurate control of the indoor fan 20.

[0046] Specifically, it also includes a control box 40, which can be integrated with the indoor control device or can be set separately. The control box 40 is set outside the range hood, and the control box 40 can be connected to other mobile terminals for communication.

[0047] In another embodiment, the indoor and outdoor joint adjustment control device includes an indoor control device and an outdoor control device, the indoor control device is connected to the outdoor control device, and the indoor control device is arranged outside the indoor fan. In this way, it is convenient for the user to operate and adjust, and there is no need to enter the interior of the indoor fan for adjustment, which can prevent the internal circuit and equipment of the indoor fan from being affected by the external environment.

[0048] Furthermore, the adjustment angle of the electric valve 15 is 0 to 90 degrees. The electric valve 15 has a wide adjustment angle range, which can achieve precise air volume control and meet the smoke exhaust requirements in different scenarios. The electric valve 15 is connected to the indoor control device to achieve automatic control, improve the intelligence of the smoke exhaust system, reduce manual intervention, and improve the stability and reliability of the system.

[0049] Specifically, the angle of the electric valve 15 is adjusted according to the rotation speed of the indoor fan 20 and the required air volume. The adjustment range of the electric valve 15 is 1° to 10°, and the adjustment range of the electric valve 15 is changed accordingly according to different situations.

[0050] In this embodiment, the adjustment range of the electric valve 15 is 2°, and the indoor control device can drive the valve plate of the electric valve 15 to adjust the output air volume.

[0051] Furthermore, the driving device of the indoor fan 20 is a DC motor. Using a DC motor as the driving device of the indoor fan 20 can adjust the frequency and speed according to the actual load demand to meet different working conditions, thereby greatly improving the efficiency of the equipment and reducing energy consumption.

[0052] Specifically, the DC motor used in this embodiment has higher power supply efficiency than the AC motor. The DC variable frequency motor has stable performance and a long service life, which can improve the reliability of the equipment, reduce maintenance costs and failure rates, and extend the service life of the equipment.

[0053] Furthermore, the indoor fan 20 is provided with an air outlet hood, and the first pipe 16 is sleeved on the air outlet hood. The air outlet hood can effectively guide the air discharged by the indoor fan 20, so that the air is evenly distributed indoors, avoiding the situation of insufficient or excessive local ventilation, reducing wind resistance, reducing the energy consumption of the fan, and improving the energy efficiency of the system.

[0054] Specifically, the inner diameter of the first pipe 16 is larger than the outer diameter of the air outlet hood, and the two are connected by fasteners or fixed by specific tapes. The first pipe 16 is sleeved on the air outlet hood to protect the fan outlet from the external environment and extend the service life of the fan and pipeline equipment.

[0055] The following introduces specific embodiments of the present application based on the above technical solution.

[0056] Example 1

[0057] See also Figure 1-4 This embodiment provides a low-resistance smoke exhaust system, including a common flue 13, a first pipe 16, a check valve, and an indoor fan 20; the common flue 13, the first pipe 16, and the indoor fan 20 are connected in sequence, the check valve is arranged between the common flue 13 and the first pipe 16, the air outlet of the indoor fan 20 is connected to one end of the first pipe 16 away from the check valve, and the projection of the air outlet to the check valve in the horizontal direction completely overlaps with the check valve. The fluid can flow through the air outlet of the indoor fan 20 and the check valve, the check valve is arranged coaxially with the air outlet of the indoor fan 20, and the first pipe 16 is arranged horizontally.

[0058] A low-resistance smoke exhaust system also includes an electric valve 15 and an indoor and outdoor joint adjustment control device. The electric valve 15 is mounted on the check valve. The indoor and outdoor joint adjustment control device is connected to the electric valve 15 and the indoor fan 20. The indoor and outdoor joint adjustment control device can adjust the speed of the indoor fan 20 and the opening of the electric valve 15.

[0059] Specifically, the indoor and outdoor joint control device includes an indoor control device and an outdoor control device, the indoor fan 20 includes a corresponding drive device and a sensor, the auxiliary fan 10 includes a corresponding drive device and a sensor, and the electric valve 15 also includes a corresponding drive device and a sensor.

[0060] A low-resistance smoke exhaust system also includes a smoke collecting device 30 and a second pipe 21, the second pipe 21 is connected to the air inlet of the indoor fan 20, and the second pipe 21 is arranged between the indoor fan 20 and the smoke collecting device 30. The smoke collecting device 30 can effectively collect oil smoke, and the second pipe 21 sends the collected oil smoke to the air inlet of the indoor fan 20, thereby improving the oil smoke purification efficiency and reducing the impact of oil smoke on indoor air.

[0061] The second pipe 21 is arranged inside the range hood, and the smoke collecting device 30 varies according to the models of different range hoods. The smoke collecting device 30 is exposed to the user's field of vision, and the smoke collecting device 30 is set at a suitable distance from the cooking stove, and the smoke collecting device 30 is connected to the second pipe.

[0062] It also includes a noise reduction device, which is arranged in the smoke collecting device 30 and sleeved on the second pipe 21. The noise reduction device is a soundproof cover.

[0063] The adjustment angle of the electric valve 15 is from 0 to 90 degrees, and the adjustment range of the electric valve 15 is 2 degrees.

[0064] The indoor fan 20 is provided with an air outlet cover, and the first pipe 16 is sleeved on the air outlet cover. The inner diameter of the first pipe 16 is larger than the outer diameter of the air outlet cover, and the two are connected by fasteners.

[0065] Example 2

[0066] The similarities between Example 2 and Example 1 are not repeated here. The difference between Example 2 and Example 1 lies in the indoor and outdoor joint adjustment control device.

[0067] The indoor and outdoor joint control device is integrated into a control box 40, wherein the control box 40 is integrated with the range hood and connected to the indoor fan 20 and the auxiliary fan 10. The control box 40 can adjust the operating status of the indoor fan 20, the auxiliary fan 10 and the electric valve 15 based on the indoor fan 20, the auxiliary fan 10 and the user's usage status, etc.

[0068] The above disclosures are only several preferred embodiments of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A low resistance smoke exhaust system, characterized in that: It includes a common flue (13), a first pipeline (16), a check valve, and an indoor fan (20); The common flue (13), the first pipe (16) and the indoor fan (20) are connected in sequence, and the check valve is arranged between the common flue (13) and the first pipe (16). The air outlet of the indoor fan (20) is connected to one end of the first pipe (16) away from the check valve, and the projection of the air outlet to the check valve in the horizontal direction at least partially overlaps with the check valve.

2. The low resistance smoke exhaust system according to claim 1, characterized in that: The fluid can flow through the air outlet of the indoor fan (20) and the check valve, the check valve is coaxially arranged with the air outlet of the indoor fan (20), and the first pipe (16) is horizontally arranged.

3. The low resistance smoke exhaust system according to claim 1, characterized in that: It also includes an electric valve (15) and an indoor and outdoor joint adjustment control device, wherein the electric valve (15) is sleeved on the check valve, and the indoor and outdoor joint adjustment control device is connected to the electric valve (15) and the indoor fan (20), and the indoor and outdoor joint adjustment control device can adjust the rotation speed of the indoor fan (20) and the opening degree of the electric valve (15).

4. The low-resistance smoke exhaust system according to any one of claims 1 to 3, characterized in that: It also comprises a smoke collecting device (30) and a second pipe (21), wherein the second pipe (21) is connected to the air inlet of the indoor fan (20), and the second pipe (21) is arranged between the indoor fan (20) and the smoke collecting device (30).

5. The low resistance smoke exhaust system according to claim 4, characterized in that: It also comprises a noise reduction device, which is arranged in the smoke collecting device (30) and is sleeved on the second pipe (21).

6. The low resistance smoke exhaust system according to claim 3, characterized in that: The indoor and outdoor joint adjustment control device comprises an indoor control device and an outdoor control device. The indoor control device is connected to the outdoor control device, and the indoor control device is integrated with the indoor fan.

7. The low resistance smoke exhaust system according to claim 3, characterized in that: The indoor and outdoor joint adjustment control device comprises an indoor control device and an outdoor control device. The indoor control device is connected to the outdoor control device, and the indoor control device is arranged outside the indoor fan.

8. The low resistance smoke exhaust system according to claim 3, characterized in that: The adjustment angle of the electric valve (15) is between 0 degrees and 90 degrees.

9. The low-resistance smoke exhaust system according to any one of claims 1 to 3, characterized in that: The driving device of the indoor fan (20) is a DC motor.

10. The low-resistance smoke exhaust system according to any one of claims 1 to 3, characterized in that: The indoor fan (20) is provided with an air outlet cover, and the first pipe (16) is sleeved on the air outlet cover.

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