Small-size smoke exhaust system

Abstract

The utility model provides a small-size smoke exhaust system, which relates to the field of kitchen electric equipment and comprises an auxiliary fan, a public flue, an indoor fan, a noise reduction box body, a smoke collecting device, a first pipeline and a second pipeline, the public flue and the first pipeline are arranged between the auxiliary fan and the indoor fan, the second pipeline is arranged between the indoor fan and the smoke collecting device, and the indoor fan is arranged in the noise reduction box body; the auxiliary fan, the public flue, the first pipeline, the indoor fan, the second pipeline and the smoke collecting device are sequentially connected, the inner diameter of the public flue is larger than or equal to that of the first pipeline, the inner diameter of the second pipeline is 1.1-2 times that of the first pipeline, and the size of at least one side of the noise reduction box is smaller than or equal to 350 mm, so that the noise reduction box is smaller in size and easy to install and overhaul, and the noise reduction efficiency is improved. Meanwhile, noise and energy consumption are reduced, and user experience and maintenance convenience are improved.

Description

Technical Field

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

[0002] The range hood is a device used in the kitchen. The existing range hood fans are exposed to the user's field of vision. When the user uses the range hood, in order to ensure the exhaust volume to meet the smoke extraction effect requirements, the range hood fan is large in size and operates at a high speed, resulting in generally loud noise. In addition, the exhaust fan inside the range hood is large in size and difficult to maintain, resulting in a poor overall user experience. Utility Model Content

[0003] The purpose of the present utility model is to provide a small-sized smoke exhaust system to address at least one of the above-mentioned existing technical problems, in which the noise reduction box accommodating the indoor fan is smaller in size, thereby reducing the noise during the operation of the range hood, improving the convenience of installation and subsequent maintenance and disassembly, and thus improving the user experience.

[0004] The present application provides a small-sized smoke exhaust system, comprising an auxiliary fan, a common flue, an indoor fan, a noise reduction box, a first pipe and a second pipe;

[0005] The common flue and the first duct are arranged between the auxiliary fan and the indoor fan, the second duct is arranged at the other end connected to the indoor fan, and the indoor fan is arranged inside the noise reduction box;

[0006] The auxiliary fan, the common flue, the first pipeline, the noise reduction box and the second pipeline are connected in sequence.

[0007] The inner diameter of the common flue is greater than or equal to the inner diameter of the first pipe, the inner diameter of the second pipe is 1.1 to 2 times the inner diameter of the first pipe, and the size of at least one side of the noise reduction box is less than or equal to 350 mm.

[0008] In a possible implementation manner, the indoor fan is arranged on the suspended ceiling, and the length of at least one side of the noise reduction box is smaller than the distance between adjacent keels in the suspended ceiling.

[0009] In a possible implementation manner, the indoor fan includes different gears, and the indoor fan can adjust the output air volume based on the gears.

[0010] In a possible implementation manner, when the indoor fan is in the first gear position, the preset range of the output air volume of the indoor fan is 8 to 10 m / s. 3 / min.

[0011] In a possible implementation manner, when the indoor fan is in the second gear position, the preset range of the output air volume of the indoor fan is 10 to 15 m / s. 3 / min.

[0012] In a possible implementation manner, a plurality of the indoor fans are connected in parallel.

[0013] In a possible implementation manner, the driving devices of the indoor fan and the auxiliary fan are DC motors.

[0014] In a possible implementation manner, a mounting bracket is further included, and the mounting bracket is arranged on a side wall of the noise reduction box.

[0015] In a possible implementation manner, sound-absorbing cotton is further included, and the sound-absorbing cotton is arranged on the outer wall of the indoor fan.

[0016] In a possible implementation manner, a smoke collecting device is further included, and the smoke collecting device is arranged on an end of the second duct away from the indoor fan.

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

[0018] The present application provides a small-sized smoke exhaust system, including an auxiliary fan, a common flue, an indoor fan, a noise reduction box, a smoke collecting device, a first pipe and a second pipe; the common flue and the first pipe are arranged between the auxiliary fan and the indoor fan, the second pipe is arranged between the indoor fan and the smoke collecting device, and the indoor fan is arranged inside the noise reduction box; the auxiliary fan, the common flue, the first pipe, the indoor fan, the second pipe and the smoke collecting device are connected in sequence, the inner diameter of the common flue is greater than or equal to the inner diameter of the first pipe, the inner diameter of the second pipe is 1.1 to 2 times the inner diameter of the first pipe, and the size of at least one side of the noise reduction box is less than or equal to 350 mm. In this way, the size of the noise reduction box is smaller, easy to install and maintain, while reducing noise and energy consumption, improving user experience and maintenance convenience. 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 A schematic diagram of the structure of a noise reduction box provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of a noise reduction box provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of a fire damper provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of an electric valve provided in an embodiment of the present application.

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

[0025] 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; 201. Noise reduction box; 206. Gasket. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[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] The following describes a smoke exhaust control system provided by an embodiment of the present application in conjunction with the accompanying drawings. The smoke exhaust control system of the present application is particularly suitable for users on multiple floors.

[0029] A small-sized smoke exhaust system comprises an auxiliary fan, a common flue 13, an indoor fan 20, a noise reduction box 201, a first pipe 16 and a second pipe 21; the common flue 13 and the first pipe 16 are arranged between the auxiliary fan and the indoor fan 20, the second pipe 21 is arranged at the other end connected to the indoor fan 20, and the indoor fan 20 is arranged inside the noise reduction box 201; the auxiliary fan, the common flue 13, the first pipe 16, the noise reduction box 201 and the second pipe 21 are connected in sequence,

[0030] The inner diameter of the common flue 13 is greater than or equal to the inner diameter of the first pipe 16, the inner diameter of the second pipe 21 is 1.1 to 2 times the inner diameter of the first pipe 16, and the size of at least one side of the noise reduction box 201 is less than or equal to 350 mm. Compared with the existing noise reduction box 201, the noise reduction box 201 is smaller in size, can be more conveniently repaired and installed, and provides a better smoke exhaust effect.

[0031] Specifically, the direction in which the fluid passes through the first pipe 16 is the first direction, the direction perpendicular to the first direction is recorded as the second direction, and the cross-sectional area of ​​the fluid in the second direction of the noise reduction box 201 is the effective cross-sectional area of ​​the fluid passing through the noise reduction box 201. The single-side dimension of the noise reduction box 201 along the first direction is greater than 300 mm, and the single-side dimension of the noise reduction box 201 along the second direction is less than or equal to 350 mm.

[0032] In one embodiment, the single-side dimension of the noise reduction box 201 in the second direction is less than or equal to 300 mm, so as to better install and repair the indoor fan 20.

[0033] Specifically, the auxiliary fan is also called an outdoor fan, and the auxiliary fan is often installed on the roof of multiple floors.

[0034] Specifically, the indoor fan 20, under the auxiliary exhaust function of the auxiliary fan, adopts the air volume adaptive adjustment technology at the same time, and the indoor ceiling fan can achieve very small exhaust resistance, that is, the maximum air volume and maximum static pressure requirements are relatively low, so the size of the indoor fan 20 does not need to be made large.

[0035] Furthermore, the noise reduction box 201 is arranged on the ceiling, and the length of at least one side of the noise reduction box 201 is less than the distance between adjacent keels in the ceiling. Installing the noise reduction box 201 on the ceiling effectively utilizes the space, does not occupy the available space in the room, and can also effectively reduce the noise generated when the smoke exhaust system is running, thereby improving the comfort of the indoor environment.

[0036] Specifically, the noise reduction box 201 is hung on the ceiling above the suspended ceiling, and the smoke collecting device 30 and the second pipe 21 are arranged below the suspended ceiling, which reduces the exposure of the range hood. The noise reduction box 201 will not be exposed to the user's field of vision, thereby improving the user's visual experience.

[0037] Furthermore, the indoor fan 20 includes different gears, and the indoor fan 20 can adjust the output air volume based on the gear. The air volume output value of the indoor fan 20 is related to the power-on information, and the power-on information includes the power-on gear information, the power-on floor information and the power-on rate. The power-on rate is the ratio of the number of users who start the machine to the total number of users. When the power-on gear information is the first gear, the air volume output range of at least one indoor fan 20 with the first gear information is consistent; when the power-on gear information is the second gear, the air volume output range of at least two indoor fans 20 with the second gear information is consistent and negatively correlated with the power-on rate. When the indoor fan 20 of the first gear is working, it can provide an appropriate amount of air volume, thereby saving energy consumption; when the indoor fan 20 of the second gear is working, it can provide sufficient air volume, thereby improving the smoke exhaust effect.

[0038] Specifically, when the gears of each user are consistent, the output air volume range of the working indoor fan 20 is consistent, the smoke exhaust resistance is large, and it runs at a high current gear, and the smoke exhaust resistance is small, and it runs at a low current gear. At the same time, the noise will be reduced, thereby achieving consistent exhaust volume on each floor. For users on high floors, since their smoke exhaust resistance is relatively small, the indoor fan 20 range hood will run at a smaller current gear, the kitchen noise will be relatively low, and it will not hinder the exhaust of other floors, thereby avoiding the adverse effects of air volume balance achieved by adjusting the angle of the electric valve 15 on high floors.

[0039] Understandably, in the case of low startup rate, the smoke exhaust resistance is small, and the actual exhaust volume of the user's range hood can be larger to achieve a better smoking effect. At this time, the speed of the auxiliary fan is also lower and the noise is smaller; in the case of high startup rate, the total air volume in the public flue 13 is large, and the smoke exhaust resistance is high. If the range hood outlet on each floor is to be in a zero resistance or even negative resistance state, and to achieve a very low speed and very low noise, the auxiliary fan needs to run at a very high speed or a larger specification external unit is required. On the one hand, the vibration and noise impact of the outdoor unit on the indoor space of the top-floor residents is increased, and on the other hand, the risk of flue pressure is increased. The most important thing is that when the flue is not completely sealed, the negative pressure in the flue is too large, which is easy to cause the hissing sound when the air flow passes through the gap. The present application adopts an air volume distribution method to achieve different target air volumes under different startup rates.

[0040] Specifically, the first gear is a weak gear, and the second gear is a strong gear. In other embodiments, the number of gears can be adjusted accordingly.

[0041] Specifically, when the indoor fan 20 is in the first gear position, the preset range of the output air volume of the indoor fan 20 is 8 to 10 m / s. 3 / min. The air volume at this time can meet the user's smoke exhaust needs. When the fan works at a lower gear, it can provide an appropriate amount of air volume, thereby simplifying the air volume adjustment method and improving the speed and effect of air volume output.

[0042] In this embodiment, the air volume output range of the indoor fan 20 with the gear information of the first gear is 8.5 to 9.5 m / s. 3 / min.

[0043] Specifically, when the indoor fan 20 is in the second gear position, the preset range of the output air volume of the indoor fan 20 is 10 to 15 m / s. 3 / min. The air volume at this time can meet the user's smoke exhaust needs. When the fan works at a higher level, it can provide sufficient air volume, thereby saving energy consumption, reducing energy costs, and reducing the impact on the environment. The air volume output range can provide more precise wind speed adjustment to meet the needs of different usage scenarios, increasing the flexibility and applicability of the indoor fan 20.

[0044] In this embodiment, the air volume output range of the indoor fan 20 with the gear information of the second gear is 10.5 to 14.5m 3 / min.

[0045] Furthermore, a plurality of indoor fans 20 are connected in parallel. By connecting a plurality of indoor fans 20 in parallel, the overall air volume output can be increased, thereby achieving a better smoke exhaust effect for each user.

[0046] Specifically, each indoor fan 20 will not interfere with the use of other indoor fans 20. When a range hood needs maintenance, the fumes of other range hoods will not spread into the kitchens of other range hood users.

[0047] Furthermore, the driving device of the indoor fan 20 and the auxiliary fan is a DC motor. Using a DC motor as the driving device of the indoor fan 20 and the auxiliary fan 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.

[0048] Furthermore, a gasket 206 is provided on the outer wall of the noise reduction box 201, and the gasket 206 is detachably connected to the outer wall of the box. The gasket 206 can stably install the noise reduction box 201 on the wall, and when the noise reduction box 201 is lowered on the wall, the vibration and noise transmitted to the wall can be effectively reduced, thereby improving the noise reduction effect. The gasket 206 can make the noise reduction box 201 contact the wall more stably, which helps to keep the box level and stable, and avoid noise and vibration caused by unstable installation.

[0049] Specifically, a plurality of washers 206 of the same height are installed on the side wall of the noise reduction box 201 , so that a uniform gap is formed between the noise reduction box 201 and the wall, and each washers 206 is symmetrically arranged on the outer wall of the noise reduction box 201 .

[0050] In an exemplary embodiment, the height of each washer 206 is 2 mm to 10 mm.

[0051] Optionally, the gasket 206 can be made of metal, plastic, rubber or composite material. The plastic gasket 206 is usually made of plastic such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc., and has good insulation performance and corrosion resistance. The rubber gasket 206 is usually made of rubber material, has good elasticity and sealing performance, and plays the role of shock absorption and sealing of the noise reduction box 201.

[0052] Furthermore, it also includes sound-absorbing cotton, which is arranged on the outer wall of the indoor fan 20. By arranging the sound-absorbing cotton in the noise reduction box 201, the noise transmitted by the auxiliary fan and the noise generated by the indoor fan 20 are further reduced.

[0053] Furthermore, it also includes a smoke collecting device 30, which is arranged on one end of the second pipe 21 away from the indoor fan 20. The fluid can be discharged through the smoke collecting device 30. The smoke collecting device 30 can effectively collect the oil smoke exhausted during cooking and discharge the oil smoke outdoors, thereby ensuring the exhaust efficiency of the range hood.

[0054] Specifically, the smoke collecting device 30 is connected to the second pipe 21 , the smoke collecting device 30 is in direct contact with the oil smoke of the stove, and the smoke collecting device 30 is between the oil smoke outside the range hood and the second pipe 21 .

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

[0056] Example 1

[0057] See also Figure 1-4The present application provides a small-sized smoke exhaust system, comprising an auxiliary fan, a common flue 13, an indoor fan 20, a noise reduction box 201, a smoke collecting device 30, a first pipe 16 and a second pipe 21; the common flue 13 and the first pipe 16 are arranged between the auxiliary fan and the indoor fan 20, the second pipe 21 is arranged between the indoor fan 20 and the smoke collecting device 30, and the indoor fan 20 is arranged inside the noise reduction box 201; the auxiliary fan, the common flue 13, the first pipe 16, the indoor fan 20, the second pipe 21 and the smoke collecting device 30 are connected in sequence, the inner diameter of the common flue 13 is greater than or equal to the inner diameter of the first pipe 16, the inner diameter of the second pipe 21 is 1.1 to 2 times the inner diameter of the first pipe 16, and the size of at least one side of the noise reduction box 201 is less than or equal to 350 mm. The noise reduction box 201 is arranged on the ceiling, and the single-side size of the noise reduction box 201 is less than the distance between adjacent keels in the ceiling.

[0058] The air volume output value of the indoor fan 20 is related to the power-on information, which includes the power-on gear information, the power-on floor information and the power-on rate. The power-on rate is the ratio of the number of users who start the machines to the total number of users. When the power-on gear information is the first gear, the air volume output range of at least one indoor fan 20 whose gear information is the first gear is consistent; when the power-on gear information is the second gear, the air volume output range of at least two indoor fans 20 whose gear information is the second gear is consistent and negatively correlated with the power-on rate.

[0059] As shown in Table 1, under different gears and start-up rates, the air volume of the indoor fan 20 is as shown in the following table:

[0060]

[0061] The air volume output range of the indoor fan 20 with the gear information of the first gear is 8.5 to 9.5m 3 / min; the air volume output range of the indoor fan 20 in the second gear is 10.5 to 14.5m 3 / min.

[0062] The plurality of indoor fans 20 are connected in parallel, and the driving devices of the indoor fans 20 and the auxiliary fans are DC motors.

[0063] The outer wall of the noise reduction box 201 is provided with a gasket 206 , and multiple gaskets 206 of the same height are installed on the side wall of the noise reduction box 201 , so that a uniform gap is formed between the noise reduction box 201 and the wall, and each gasket 206 is symmetrically arranged on the outer wall of the noise reduction box 201 .

[0064] The sound-absorbing cotton is arranged on the outer wall of the indoor fan 20 .

[0065] Example 2

[0066] The present application provides a small-sized smoke exhaust system. The difference between Example 2 and Example 1 is that the length of at least one side of the noise reduction box 201 is less than 300 mm.

[0067] The noise reduction box 201 of Example 2 is smaller in size than that of Example 1, so it is more convenient to install and maintain, reducing the cost and workload of installation and maintenance, and making the kitchen tidier and more spacious.

[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 small-sized smoke exhaust system, characterized in that: It comprises an auxiliary fan (10), a common flue (13), an indoor fan (20), a noise reduction box (201), a first pipeline (16) and a second pipeline (21); The common flue (13) and the first pipe (16) are arranged between the auxiliary fan (10) and the indoor fan (20); the second pipe (21) is arranged at the other end connected to the indoor fan (20); and the indoor fan (20) is arranged inside the noise reduction box (201); The auxiliary fan (10), the common flue (13), the first pipeline (16), the noise reduction box (201), and the second pipeline (21) are connected in sequence. The inner diameter of the common flue (13) is greater than or equal to the inner diameter of the first pipe (16), the inner diameter of the second pipe (21) is 1.1 to 2 times the inner diameter of the first pipe (16), and the dimension of at least one side of the noise reduction box (201) is less than or equal to 350 mm.

2. The small-sized smoke exhaust system according to claim 1, characterized in that: The indoor fan (20) is arranged on the suspended ceiling, and the length of at least one side of the noise reduction box (201) is smaller than the distance between adjacent keels in the suspended ceiling.

3. The small-sized smoke exhaust system according to claim 1, characterized in that: The indoor fan (20) comprises different gears, and the indoor fan (20) can adjust the output air volume based on the gears.

4. The small-sized smoke exhaust system according to claim 3, characterized in that: When the indoor fan (20) is in the first gear position, the preset range of the output air volume of the indoor fan (20) is 8 to 10 m / s. 3 / min.

5. The small-sized smoke exhaust system according to claim 3, characterized in that: When the indoor fan (20) is in the second gear position, the preset range of the output air volume of the indoor fan (20) is 10 to 15 m / s. 3 / min.

6. The small-sized smoke exhaust system according to any one of claims 1 to 3, characterized in that: The plurality of indoor fans (20) are connected in parallel.

7. The small-sized smoke exhaust system according to any one of claims 1 to 3, characterized in that: The driving devices of the indoor fan (20) and the auxiliary fan (10) are direct current motors.

8. The small-sized smoke exhaust system according to any one of claims 1 to 3, characterized in that: It also includes a mounting bracket, which is arranged on the side wall of the noise reduction box (201).

9. The small-sized smoke exhaust system according to any one of claims 1 to 3, characterized in that: It also includes sound-absorbing cotton, which is arranged on the outer wall of the indoor fan (20).

10. The small-sized smoke exhaust system according to any one of claims 1 to 3, characterized in that: It also comprises a smoke collecting device (30), wherein the smoke collecting device (30) is arranged on an end of the second duct (21) away from the indoor fan (20).

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