Smoke exhaust system
By designing noise reduction box, auxiliary fan and indoor and outdoor control control devices in the range hood to adjust the fan speed, the problem of oil pollution accumulation and noise of the range hood is solved, and more efficient smoke exhaust and more convenient cleaning is achieved.
Patent Information
- Application Number
- CN202420306543.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-19
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-02-19
AI Technical Summary
Existing range hoods are prone to inhaling oil fume at high speeds, resulting in grease particles being thrown onto the fan impeller, oil stains accumulate, smoke exhaust effect is poor and cleaning is inconvenient.
Design a smoke exhaust system, including noise reduction box, auxiliary fan and indoor fan, adjust the fan speed through indoor and outdoor control device, reduce the speed of the indoor fan, and reduce the adhesion of oil and dust. Driven by DC motor, combined with removable installation Brackets and washers to reduce noise and vibration.
It effectively reduces oil stain adhesion, extends the cleaning cycle, reduces noise and vibration, and improves the sense of use and efficiency of the smoke exhaust system.
Smart Images
Figure CN222230635U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of kitchen appliances, and in particular to a smoke exhaust system. Background Art
[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. In order to achieve a good smoke exhaust effect, the current range hoods have an excessively high speed. When the speed of the range hood is high, the smoke will be more easily sucked into the range hood due to the strong wind force. When the smoke passes through the range hood, the grease particles in the smoke will be thrown onto the impeller of the fan due to the high-speed rotating wind wheel. As time goes by, the accumulated oil pollution leads to poor smoke exhaust effect, and it is relatively inconvenient for users to clean the range hood. Utility Model Content
[0003] The purpose of the present application is to provide a smoke exhaust system to address at least one of the above-mentioned existing technical problems, in which the fan performance of the range hood meets the user requirements and the vibration of the range hood is reduced during operation. During use, the oil stains adhering to the indoor fan are reduced, thereby reducing the cleaning requirements and achieving a noise reduction effect.
[0004] The present application provides a smoke exhaust system, a smoke exhaust system, characterized in that it includes a noise reduction box, an auxiliary fan, an indoor fan and an indoor and outdoor joint adjustment control device,
[0005] The indoor fan is arranged in the noise reduction box, the indoor fan and the auxiliary fan can be connected and disconnected, the indoor and outdoor joint adjustment control device can obtain the rotation speed of the auxiliary fan and the rotation speed of the indoor fan, the indoor and outdoor joint adjustment control device can adjust the rotation speed of the auxiliary fan based on the rotation speed of the indoor fan, and when the gear positions of at least two of the indoor fans are the same, the rotation speeds of the at least two indoor fans are consistent,
[0006] The indoor and outdoor joint control device is used to control the rotation speed of the indoor fan and the rotation speed of the auxiliary fan, and the rotation speed of the indoor fan is not greater than 1000 revolutions.
[0007] In a possible implementation manner, it also includes a detachable hanging ear and a mounting bracket, the mounting bracket is connected to the noise reduction box, the mounting bracket is arranged on the outer wall of the noise reduction box abutting the wall, the mounting bracket includes a hook, and the hanging ear is provided with a notch, and the notch can cooperate with the hook.
[0008] In a possible implementation manner, at least one through hole is provided on the top plate near the edge of the noise reduction box, and the hanging ear is provided with a through hole that can cooperate with the noise reduction box, and the hanging ear and the noise reduction box are fixedly connected by assembling fasteners in the through hole.
[0009] In a possible implementation manner, the mounting bracket and the hanging ear are fixed by assembling fasteners in different through holes, and the mounting bracket can be provided with at least one mounting direction.
[0010] In a possible implementation manner, a gasket is further included, and the gasket is arranged on the outer wall of the noise reduction box, and the outer wall of the noise reduction box is detachably connected to the gasket.
[0011] In a possible implementation manner, the surface of the mounting bracket is covered with a corrosion-resistant coating.
[0012] In a possible implementation manner, the driving devices of the indoor fan and the auxiliary fan are DC motors.
[0013] In a possible implementation manner, a check valve and an electric valve are further included, and the electric valve is sleeved on the check valve.
[0014] In a possible implementation manner, the hanging ears are symmetrically arranged on the mounting bracket.
[0015] In a possible implementation manner, the distance between adjacent notches is smaller than the length of a single side of the noise reduction box.
[0016] The beneficial effects of a smoke exhaust system provided by the present application are as follows:
[0017] The present application provides a smoke exhaust system, including a noise reduction box, an auxiliary fan and an indoor fan. The indoor fan is arranged in the noise reduction box. The indoor fan and the auxiliary fan can be connected and disconnected. The indoor and outdoor joint adjustment control device can obtain the output speed of the auxiliary fan and the output speed of the indoor fan. The indoor and outdoor joint adjustment control device can adjust the output speed of the auxiliary fan based on the output speed of the indoor fan. When the gears of at least two indoor fans are the same, the output speeds of at least two indoor fans are consistent. The control device can control the speed of the indoor fan and the speed of the auxiliary fan. The speed of the indoor fan is not more than 1000 rpm, so that the grease adhered to the indoor fan is reduced, the user's range hood cleaning cycle is extended, and the user's experience of use is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] 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.
[0019] Figure 1 A schematic diagram of the structure of a noise reduction box provided in an embodiment of the present application;
[0020] Figure 2A top view of a noise reduction box provided in an embodiment of the present application;
[0021] Figure 3 A side view of a noise reduction box provided in an embodiment of the present application;
[0022] Figure 4 A schematic diagram of the structure of the mounting bracket provided in an embodiment of the present application.
[0023] The following is a supplementary description of the attached drawings:
[0024] 10. Auxiliary fan; 20. Indoor fan; 201. Noise reduction box; 202. Mounting bracket; 203. Hook; 204. Hanging ear; 205. Notch; 206. Washer. DETAILED DESCRIPTION
[0025] 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.
[0026] 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.
[0027] A smoke exhaust system provided in an embodiment of the present application is described below in conjunction with the accompanying drawings. The smoke exhaust system of the present application is particularly suitable for users on multiple floors.
[0028] A smoke exhaust system includes a noise reduction box 201, an auxiliary fan 10 and an indoor fan 20, wherein the indoor fan 20 is arranged in the noise reduction box 201, and the indoor fan 20 and the auxiliary fan 10 can be connected and disconnected, and an indoor and outdoor joint adjustment control device can obtain the output speed of the auxiliary fan 10 and the output speed of the indoor fan 20, and the indoor and outdoor joint adjustment control device can adjust the output speed of the auxiliary fan 10 based on the output speed of the indoor fan 20, and when at least two indoor fans 20 have the same gear position, the output speeds of at least two indoor fans 20 are consistent, and the indoor and outdoor joint adjustment control device can control the speed of the indoor fan 20 and the speed of the auxiliary fan 10, and the speed of the indoor fan 20 is not greater than 1000 revolutions. By reducing the speed of the indoor fan 20, the degree of oil smoke adhering to the indoor fan 20 is reduced, more oil smoke enters each pipeline, and the use effect of the indoor fan 20 is improved.
[0029] It can be understood that the grease separation of the indoor fan 20 is mainly achieved by the centrifugal force of the impeller, which is positively correlated with the magnitude of the centrifugal force. The magnitude of the centrifugal force can be expressed as: F = m*ω 2 *r, where m is the mass of the oil droplets, ω is the angular velocity, and r is the impeller radius. Based on the existing test data, when there is no outdoor unit, the impeller diameter is 255mm, and the rotation speed is generally 1300rpmm to meet the exhaust volume requirements; when there is auxiliary exhaust with the auxiliary fan 10, the impeller diameter is 220mm, and the rotation speed only needs to be 700rpm to meet the required output air volume. With the auxiliary fan 10, the centrifugal force is only 25% of the original. This shows that the indoor fan 20 has a 75% lower degree of oil adhesion with the auxiliary fan 10. In other words, the cleaning cycle is extended to 4 times the original. Among them, if a conventional ceiling hood is cleaned once a year, it can be extended to once every 4 years with the auxiliary exhaust of the auxiliary fan 10. In addition, the rotation speed of the indoor fan 20 is low, and the oil adhesion has little effect on the performance of the fan, thereby extending the cleaning time.
[0030] Specifically, a good noise reduction effect can be achieved by reducing the rotation speed of the indoor fan 20 and reducing the size of the noise reduction box 201. In one embodiment, when there is no auxiliary fan 10, the diameter of the wind wheel is 255 mm, and the rotation speed is generally 1300 rpm to meet the exhaust volume requirement; when there is an auxiliary fan 10 to assist in smoke exhaust, the diameter of the wind wheel is 220 mm.
[0031] Furthermore, it also includes a detachable hanging ear 204 and a mounting bracket 202, the mounting bracket 202 is connected to the noise reduction box 201, the mounting bracket 202 is arranged on the outer wall of the noise reduction box 201 abutting against the wall, the mounting bracket 202 includes a hook 203, and a notch 205 is provided on the hanging ear 204, and the notch 205 can cooperate with the hook 203. The noise reduction box 201 can be conveniently connected to a wall or other structures, and the mounting bracket 202 is arranged on the outer wall of the noise reduction box 201 abutting against the wall, which can ensure the stability of the noise reduction box 201 on the wall.
[0032] Specifically, the mounting bracket 202 includes a hook 203 , and a notch 205 is formed on the hanging ear 204 . The notch 205 can cooperate with the hook 203 , so that the hanging ear 204 can be easily disassembled and replaced.
[0033] Specifically, the mounting bracket 202 includes two symmetrical hooks 203 , and the notches 205 on the hanging ears 204 cooperate with the hooks 203 , so that the hooks 203 and the notches 205 form a buckle.
[0034] In one embodiment, the hook 203 is welded to the notch 205 .
[0035] It is understandable that, considering the differences in house types, the positional relationship between the range hood and the flue is variable. The flue may be on the left, right, or even the back of the range hood. The air outlet of the indoor fan 20 of the noise reduction box 201 of the present application can be reversed. Most of the existing ceiling range hood fan boxes are hoisted, and basically two service technicians are required to operate simultaneously during installation.
[0036] Specifically, the noise reduction box 201 of the present application is mounted in a hanging manner, and during installation, the fixed position of each mounting bracket 202 is adjusted according to the position of the flue, so that the noise reduction box 201 can be installed in various directions and can be installed by one service personnel.
[0037] Further, at least one through hole is provided on the top plate near the edge of the noise reduction box 201, and the ear 204 is provided with a through hole that can be matched with the noise reduction box 201. By assembling fasteners in the through holes, the ear 204 and the noise reduction box 201 are fixedly connected. By providing a through hole on the top plate of the noise reduction box 201 and assembling fasteners in the through holes, the ear 204 and the noise reduction box 201 can be firmly connected together, thereby enhancing the overall stability of the box and preventing it from loosening or falling off during use.
[0038] Specifically, a plurality of through holes are provided on the top plate of the noise reduction box 201, some of which cooperate with the hanging ears 204 to fix the hanging ears 204, and some of the through holes are provided with sealing fasteners to fix the connection between the top plate of the box and the side wall of the box, further enhancing the stability and sealing of the noise reduction box 201. The sealing fasteners can also provide additional sealing performance to prevent dust, moisture or other impurities from entering the noise reduction box 201.
[0039] Specifically, by assembling fasteners in different through holes to fix the mounting bracket 202 and the hanging ears 204, the mounting direction of the mounting bracket 202 is different. Different through hole designs allow the mounting bracket 202 to adjust the mounting direction according to actual needs, increasing the flexibility of installation.
[0040] In one embodiment, including but not limited to three installation directions, all directions except the direction arranged on the same side as the air outlet of the range hood are provided with a mounting bracket 202.
[0041] Furthermore, it also includes a gasket 206, which is arranged on the outer wall of the noise reduction box 201, and the outer wall of the noise reduction box 201 is detachably connected to the gasket 206. Such a setting can reduce the direct contact between the noise reduction box 201 and the bracket, thereby reducing the conduction of vibration and reducing the generation and propagation of noise.
[0042] Specifically, the gasket 206 is symmetrically arranged on the outer wall of the noise reduction box 201, and the gasket 206 is made of a material with shock-proof and wear-resistant properties such as silicone.
[0043] Furthermore, the surface of the mounting bracket 202 is covered with a corrosion-resistant coating. The corrosion-resistant coating can effectively extend the service life of the mounting bracket 202, reduce damage caused by corrosion and the frequency of replacement, and the coating can also increase the surface friction of the bracket, improve its anti-slip and anti-friction capabilities, thereby improving the safety performance of the bracket.
[0044] Optionally, the corrosion resistant coating may be epoxy, galvanized, stainless steel, or the like.
[0045] In one embodiment, the mounting bracket 202, the hanging ear 204 and the fastener are all provided with a corrosion-resistant coating, thereby extending the service life of the range hood as a whole.
[0046] Furthermore, the driving devices of the indoor fan 20 and the auxiliary fan 10 are both DC motors. Using DC motors as the driving devices of the indoor fan 20 and the auxiliary fan 10 can adjust the frequency and speed according to actual load requirements to meet different working conditions, thereby greatly improving the efficiency of the equipment and reducing energy consumption.
[0047] 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.
[0048] Furthermore, it also includes a check valve and an electric valve, and the electric valve is sleeved on the check valve. In this way, the overall air volume of the range hood is adjusted by setting the check valve and the electric valve, and the indoor and outdoor joint control system adjusts the opening of the electric valve according to the indoor fan speed, thereby improving the efficiency of the entire system. The check valve is used to prevent external fluid from entering to prevent odor and smoke backflow.
[0049] In one embodiment, the check valve and the valve plate of the electric valve are integrated, and the valve plate of the electric valve is adjusted while ensuring the backflow of the external fluid, thereby adjusting the exhaust speed and flow rate of the range hood.
[0050] In this embodiment, the diameter of the wind wheel is 220 mm, so that the overall size of the noise reduction box 201 is reduced.
[0051] Furthermore, the hooks 203 are symmetrically arranged on the mounting bracket 202. Such an arrangement can ensure load balance and avoid the bracket from being unstable or unsafe due to uneven load.
[0052] In one embodiment, a mounting bracket 202 is provided with two notches 205 , the notches 205 are opened at two ends of the mounting bracket 202 , and the hanging ears 204 cooperate with the hooks 203 .
[0053] Furthermore, the distance between adjacent notches 205 is less than the length of a single side of the noise reduction box 201. Such an arrangement can effectively utilize space and ensure that the connection between the mounting bracket 202 and the noise reduction box 201 is compact and stable.
[0054] Specifically, the distance between adjacent notches 205 on the same mounting bracket 202 is less than the single side length of the noise reduction box 201, and the single side length of the noise reduction box 201 is greater than or equal to the sum of the length of one mounting bracket 202 and the width of another mounting bracket 202. When the single side length of the noise reduction box 201 is greater than the sum of the length of one mounting bracket 202 and the width of another mounting bracket 202, an extra mounting position is reserved for a spare mounting bracket 202.
[0055] The following introduces specific embodiments of the present application based on the above technical solution.
[0056] Example 1
[0057] See also Figure 1-4A smoke exhaust system includes a noise reduction box 201, an auxiliary fan 10 and an indoor fan 20, the indoor fan 20 is arranged in the noise reduction box 201, the indoor fan 20 and the auxiliary fan 10 can be connected and disconnected, the indoor and outdoor joint adjustment control device can obtain the output speed of the auxiliary fan 10 and the output speed of the indoor fan 20, the indoor and outdoor joint adjustment control device can adjust the output speed of the auxiliary fan 10 based on the output speed of the indoor fan 20, when at least two indoor fans 20 have the same gear position, the output speed of at least two indoor fans 20 is consistent, the indoor and outdoor joint adjustment control device can control the speed of the indoor fan 20 and the speed of the auxiliary fan 10, and the speed of the indoor fan 20 is about 700-800 rpm.
[0058] The noise reduction box 201 also includes a detachable hanging ear 204 and a mounting bracket 202. The mounting bracket 202 is connected to the noise reduction box 201. The mounting bracket 202 is arranged on the outer wall of the noise reduction box 201 abutting against the wall. The mounting bracket 202 includes a hook 203. The hanging ear 204 is provided with a notch 205, and the notch 205 can cooperate with the hook 203. The mounting bracket 202 includes a hook 203. The hanging ear 204 is provided with a notch 205, and the notch 205 can cooperate with the hook 203.
[0059] The mounting bracket 202 includes two symmetrical hooks 203. The notches 205 on the hanging ears 204 cooperate with the hooks 203, and the hooks 203 and the notches 205 form a buckle. The hooks 203 and the notches 205 are welded. The mounting bracket 202 and the hanging ears 204 are fixed by assembling fasteners in different through holes, and the mounting directions of the mounting bracket 202 are different.
[0060] Based on the above solution, the noise reduction box 201 is mounted in a hanging manner, and the position of each mounting bracket 202 is adjusted according to the position of the flue during installation.
[0061] The gasket 206 is arranged on the outer wall of the noise reduction box 201, and the outer wall of the noise reduction box 201 is detachably connected to the gasket 206. Such an arrangement can reduce the direct contact between the noise reduction box 201 and the bracket, thereby reducing the conduction of vibration and reducing the generation and propagation of noise.
[0062] Example 2
[0063] The similarities between Example 2 and Example 1 are not repeated here. The difference between Example 2 and Example 1 is that only one mounting bracket 202 is set, wherein the mounting direction of the mounting bracket 202 is set according to the user's range hood and smoke exhaust pipe, and the through holes on the top plate of the noise reduction box 201 where the mounting bracket 202 is not set are fixed with fasteners, thereby preventing other substances from entering the interior of the range hood and the range hood is easy to install.
[0064] 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 smoke exhaust system, characterized in that: It comprises a noise reduction box (201), an auxiliary fan (10), an indoor fan (20) and an indoor and outdoor joint adjustment control device. The indoor fan (20) is arranged in the noise reduction box (201); the indoor fan (20) and the auxiliary fan (10) can be connected and disconnected; the indoor and outdoor joint adjustment control device can obtain the rotation speed of the auxiliary fan (10) and the rotation speed of the indoor fan (20); the indoor and outdoor joint adjustment control device can adjust the rotation speed of the auxiliary fan (10) based on the rotation speed of the indoor fan (20); when the gear positions of at least two of the indoor fans are the same, the rotation speeds of the at least two indoor fans are consistent; The indoor and outdoor joint control device is used to control the rotation speed of the indoor fan (20) and the rotation speed of the auxiliary fan (10), and the rotation speed of the indoor fan (20) is not greater than 1000 revolutions.
2. The smoke exhaust system according to claim 1, characterized in that: It also includes a detachable hanging ear (204) and a mounting bracket (202), wherein the mounting bracket (202) is connected to the noise reduction box (201), and the mounting bracket (202) is arranged on the outer wall of the noise reduction box (201) abutting against the wall, and the mounting bracket (202) includes a hook (203), and a notch (205) is provided on the hanging ear (204), and the notch (205) can cooperate with the hook (203).
3. The smoke exhaust system according to claim 2, characterized in that: At least one through hole is provided on the top plate of the noise reduction box (201) near the edge, and the hanging ear (204) is provided with a through hole that can cooperate with the noise reduction box (201), and the hanging ear (204) and the noise reduction box (201) are fixedly connected by assembling a fastener in the through hole.
4. The smoke exhaust system according to claim 2, characterized in that: By assembling fasteners in different through holes to fix the mounting bracket (202) and the hanging ear (204), the mounting bracket (202) can be provided with at least one mounting direction.
5. The smoke exhaust system according to any one of claims 1 to 3, characterized in that: It also includes a gasket (206), the gasket (206) being arranged on the outer wall of the noise reduction box (201), and the outer wall of the noise reduction box (201) and the gasket (206) being detachably connected.
6. The smoke exhaust system according to any one of claims 2 or 3, characterized in that: The surface of the mounting bracket (202) is covered with a corrosion-resistant coating.
7. The 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 smoke exhaust system according to claim 6, characterized in that: It also includes a check valve and an electric valve, wherein the electric valve sleeve is arranged on the check valve.
9. The smoke exhaust system according to claim 2, characterized in that: The hanging ears (204) are symmetrically arranged on the mounting bracket (202).
10. The smoke exhaust system according to claim 2, characterized in that: The distance between adjacent notches (205) is smaller than the length of a single side of the noise reduction box (201).