Internal circulation range hood and stove all-in-one machine

Abstract

The utility model provides an internal circulation range hood and stove all-in-one machine which comprises a plurality of relatively independent air ducts, a plurality of air ducts used for filtering oil smoke with different concentrations are arranged corresponding to the oil smoke with different concentrations, and an air inlet fan is arranged in each air duct; and the oil smoke concentration sensors are arranged at the air inlets of the multiple air ducts correspondingly, the oil smoke concentration sensors are used for measuring the oil smoke concentration corresponding to the current air ducts and comparing the oil smoke concentration with the preset oil smoke concentration, and the target air duct with the corresponding concentration is opened based on the comparison result. The cooking fumes with different concentrations flow into the air ducts with corresponding concentrations, so that when only light cooking fumes instead of heavy cooking fumes are generated during cooking, the service life of the filtering structure in the air duct for filtering and purifying the heavy cooking fumes is prolonged, and when only heavy cooking fumes instead of light cooking fumes are generated during cooking, the service life of the filtering structure in the air duct is prolonged. And the service life of the filtering structure in the air duct for filtering and purifying the light oil smoke is prolonged. The filter structure replacement period is prolonged, and the use cost is reduced.

Description

Technical Field

[0001] This utility model relates to an integrated range hood and stove with internal circulation. Background Technology

[0002] Because integrated range hoods and cooktops with internal circulation are not restricted by public flue installation, they can filter and purify cooking fumes before directly discharging them into the kitchen, gradually gaining favor and attention from users.

[0003] Existing integrated range hoods with internal circulation typically feature a single filtration duct. This duct may consist of a metal filter → powdered activated carbon → fan, or a metal filter → fan → high-efficiency filter → activated carbon mesh, etc. Under different cooking conditions, both light and heavy fumes from the cooktop are filtered and purified through this duct. This drastically reduces the lifespan of the filter structure, which absorbs both light and heavy fumes, leading to frequent replacements and high operating costs. Users have many concerns when choosing an integrated range hood with internal circulation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing single-duct filter material with short service life and high cost, and to provide an integrated range hood and stove with internal circulation.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] An integrated range hood and cooktop with internal circulation, the integrated range hood and cooktop comprising:

[0007] Multiple relatively independent air ducts are provided for filtering oil fumes of different concentrations. Each air duct is equipped with an air intake fan.

[0008] A fume concentration sensor is provided, which is respectively installed at the air inlet of multiple air ducts. The fume concentration sensor is used to measure the current fume concentration of the air duct and compare it with the preset fume concentration. Based on the comparison result, the target air duct with the corresponding concentration is opened.

[0009] In this solution, multiple air ducts are set up to accommodate different concentrations of cooking fumes. During filtration and purification, fumes of varying concentrations flow into the corresponding ducts. When cooking produces only light fumes rather than heavy fumes, the lifespan of the filtration structure within the ducts used for filtering and purifying heavy fumes is extended. Similarly, when cooking produces only heavy fumes rather than light fumes, the lifespan of the filtration structure within the ducts used for filtering and purifying light fumes is extended. Multiple air ducts form zoned filtration, which, compared to using a single air duct under different fume concentrations, extends the filter replacement cycle and reduces operating costs, thereby eliminating many concerns users may have when choosing an integrated range hood and cooktop with internal circulation.

[0010] Preferably, the plurality of air ducts includes a first air duct and a second air duct, the first air duct further includes a filter screen and activated carbon, the filter screen being disposed between the air intake fan and the activated carbon in the first air duct;

[0011] The second air duct also includes a heating adsorption component, a filter component, and an ozone decomposition component. The air intake fan of the second air duct is located near the air inlet of the second air duct. The heating adsorption component is located between the air intake fan and the filter component of the second air duct. The filter component is located between the heating adsorption component and the ozone decomposition component. The ozone decomposition component is located away from the air inlet of the second air duct.

[0012] In this scheme, the above settings are used to set up a first air duct and a second air duct for oil fumes of different concentrations. The first air duct has a simple filtration structure and low air resistance and is used to filter light oil fumes, while the second air duct has a complex filtration structure and is used to filter heavy oil fumes.

[0013] Preferably, the integrated range hood and stove with internal circulation further includes a filter section, which is located at the air inlet of the second air duct and is connected to the second air duct.

[0014] In this solution, an additional filter section is added to improve the filtration effect of the second air duct on oil fumes.

[0015] Preferably, the filter section includes a cover plate, a filter screen, and a rotating screen. The cover plate is disposed over the air inlet of the second air duct, the rotating screen is embedded in the cover plate, and the filter screen is disposed on the rotating screen and is positioned away from the air inlet of the second air duct.

[0016] In this solution, the above settings are used to achieve effective filtration of cooking fumes.

[0017] Preferably, a guide vane is also provided in the first air duct and the second air duct, and the guide vane is located away from the air inlet of the first air duct and the second air duct.

[0018] In this solution, the above settings are used to increase the flow rate of the filtered airflow circulating to the space where the integrated range hood and cooktop is located.

[0019] Preferably, the integrated range hood and cooktop with internal circulation is provided with air outlets corresponding to the first air duct and the second air duct, and the air outlets are located at both end faces of the integrated range hood and cooktop with internal circulation along the length direction.

[0020] In this solution, the above settings ensure that the fumes are smoothly discharged after filtration, while preventing the filtered fumes from flowing towards the walls or the user's location, thus improving the user experience.

[0021] Preferably, the first air duct further includes an exhaust fan, the intake fan and the exhaust fan are arranged sequentially along the extension direction of the first air duct, the intake fan of the first air duct is located between the air inlet of the first air duct and the exhaust fan, the filter is located between the intake fan and the exhaust fan of the first air duct, the exhaust fan is located between the filter and the activated carbon, the activated carbon is disposed between the exhaust fan and the guide plate, and the guide plate is disposed near the air outlet of the first air duct.

[0022] In this solution, by increasing the number of fans as described above, the airflow velocity in the first air duct is increased. Without increasing the speed of the intake fan, the operating noise of the integrated range hood and stove is reduced accordingly, and the airflow in the first air duct is increased accordingly, thus meeting user needs.

[0023] Preferably, the heating and adsorption assembly includes a spiral heating resistance wire, an axial fan, and an adsorption layer, wherein the adsorption layer has a plurality of through holes.

[0024] In this solution, the above settings are used to achieve thorough filtration of oil fumes, which is especially suitable for filtering heavy oil fumes.

[0025] Preferably, the filter assembly includes an activated carbon layer and a composite layer, wherein the activated carbon layer has a plurality of through holes.

[0026] In this solution, the above settings are used to filter out residual heavy oil fumes with larger particle sizes.

[0027] Preferably, the filter is a HEPA filter.

[0028] The significant advantages of this invention are as follows: By designing multiple air ducts corresponding to different concentrations of cooking fumes, different concentrations of fumes flow into the corresponding ducts during filtration and purification. When cooking produces only light fumes rather than heavy fumes, the lifespan of the filtration structure within the ducts used for filtering and purifying heavy fumes is extended. Similarly, when cooking produces only heavy fumes rather than light fumes, the lifespan of the filtration structure within the ducts used for filtering and purifying light fumes is extended. Multiple air ducts form zoned filtration, which, compared to using a single air duct under different fume concentrations, extends the filter replacement cycle and reduces operating costs, thereby eliminating many concerns users may have when choosing an integrated range hood and cooktop with internal circulation. Attached Figure Description

[0029] Figure 1 This is a perspective view of a preferred embodiment of the integrated range hood and stove with internal circulation.

[0030] Figure 2 This is a schematic diagram of the structure of the first and second air ducts according to a preferred embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the structure of an intake fan according to a preferred embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram of the filter section of a preferred embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] Intake fan 1

[0035] 2 auxiliary exhaust fans

[0036] Oil fume concentration sensor 3

[0037] Filter section 4

[0038] Cover plate 41

[0039] Filter screen 42

[0040] Rotating Net 43

[0041] Air outlet 5

[0042] Air inlet 6

[0043] First Windway 10

[0044] Filter 11

[0045] Activated carbon 12

[0046] Deflector 13

[0047] Second air duct 20

[0048] Heating adsorption component 21

[0049] Heating resistance wire 211

[0050] Axial fan 212

[0051] Adsorption layer 213

[0052] Filter component 22

[0053] Activated carbon layer 221

[0054] Composite layer 222

[0055] Ozone Decomposition Component 23 Detailed Implementation

[0056] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0057] This embodiment provides an integrated range hood and cooktop with internal circulation, the specific structure of which is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the integrated range hood and cooktop with internal circulation includes:

[0058] Multiple relatively independent air ducts are set up to filter oil fumes of different concentrations. Each air duct is equipped with an air intake fan 1.

[0059] Oil fume concentration sensor 3 is installed at the air inlet 6 of multiple air ducts. Oil fume concentration sensor 3 is used to measure the oil fume concentration of the current air duct and compare it with the preset oil fume concentration. Based on the comparison result, the target air duct with the corresponding concentration is opened.

[0060] Specifically, the air duct is a channel within the casing of the integrated range hood and cooktop unit. Taking two air ducts as an example, each air duct includes an intake fan 1. The intake fan 1 draws cooking fumes into the air duct and circulates the filtered and purified fumes back to the space where the integrated range hood and cooktop unit is located. It does not need to be connected to a common flue, preventing fumes from the common flue from entering the space where the integrated range hood and cooktop unit is located. By placing the fume concentration sensor 3 at the air inlet 6 of multiple air ducts, the fume concentration can be detected at different locations within the integrated range hood and cooktop unit. In the case of two air ducts, the integrated range hood and cooktop unit has two burners, each corresponding to a specific air duct. This allows for accurate identification of whether the fume concentration is light or heavy, enabling the activation of the corresponding air duct based on the comparison results.

[0061] The oil fume concentration sensor 3 is a conventional sensor. It is electrically connected to the control board of the integrated range hood and cooktop, allowing the control board to open or close the air duct. This embodiment does not modify the oil fume concentration sensor 3 or the control board, and will not be elaborated upon here. By setting multiple air ducts corresponding to different concentrations of oil fumes, the multiple air ducts are relatively independently configured for zoned filtration and purification. Oil fumes of different concentrations flow into the corresponding air ducts. When cooking only produces light oil fumes rather than heavy oil fumes, the service life of the filter structure within the air duct used for filtering and purifying heavy oil fumes is extended. Similarly, when cooking only produces heavy oil fumes rather than light oil fumes, the service life of the filter structure within the air duct used for filtering and purifying light oil fumes is extended. Compared to using a single air duct under different oil fume concentrations, the filter structure replacement cycle is extended, and the operating cost is reduced, thereby eliminating many concerns users may have when choosing an integrated range hood and cooktop.

[0062] In this embodiment, the multiple air ducts include a first air duct 10 and a second air duct 20. The first air duct 10 also includes a filter screen 11 and activated carbon 12. The filter screen 11 is disposed between the air intake fan 1 and the activated carbon 12 of the first air duct 10.

[0063] The second air duct 20 also includes a heating adsorption component 21, a filter component 22, and an ozone decomposition component 23. The air intake fan 1 of the second air duct 20 is located close to the air inlet 6 of the second air duct 20. The heating adsorption component 21 is located between the air intake fan 1 and the filter component 22 of the second air duct 20. The filter component 22 is located between the heating adsorption component 21 and the ozone decomposition component 23. The ozone decomposition component 23 is located away from the air inlet 6 of the second air duct 20.

[0064] Specifically, the first air duct 10 is used to filter and purify light oil fumes, which are oil fumes with a concentration lower than a preset concentration but greater than 0. The second air duct 20 is used to filter and purify heavy oil fumes, which are light oil fumes with a concentration greater than a preset concentration. When the oil fume concentration sensor 3 detects that the current oil fume concentration is light oil fumes, the first air duct 10 is opened and the second air duct 20 is closed. In fact, the air duct is opened by turning on the corresponding air intake fan 1, and similarly, the air duct is closed by turning off the corresponding air intake fan 1. This is existing technology and will not be elaborated further here. When the oil fume concentration sensor 3 detects that the current oil fume concentration is heavy oil fumes, the second air duct 20 is opened and the first air duct 10 is closed. The filtration structure in the second air duct 20 is more complex than that in the first air duct 10, and correspondingly, the air resistance is greater. The oil fumes flow in the second air duct 20 in the following order: air intake fan 1, heating adsorption component 21, filter component 22, and ozone decomposition component 23. The heating adsorption component 21 heats and oxidizes the heavy cooking fumes entering the second air duct 20, thereby filtering out gaseous pollutants from the heavy cooking fumes. The filter component 22 further filters the gaseous pollutants and smaller cooking fume particles remaining after filtration by the heating adsorption component 21. The ozone decomposition component 23 is a UV lamp, as used in the prior art. Multiple UV lamps are arranged with intervals between adjacent UV lamps to oxidize and decompose smaller-diameter gaseous pollutants with ozone. This achieves effective filtration and purification of heavy cooking fumes, suitable for complex cooking environments, and eliminates the need for the heavy cooking fumes to enter the first air duct 10, thus indirectly extending the service life of the filter materials in the first air duct 10.

[0065] In this embodiment, the integrated range hood and stove with internal circulation also includes a filter 4, which is disposed at the air inlet 6 of the second air duct 20 and is connected to the second air duct 20.

[0066] Specifically, the filter unit 4 is mounted on and fixedly connected to the air inlet 6 of the second air duct 20. Based on the existing heating adsorption assembly 21, filter assembly 22, and ozone decomposition assembly 23 within the air duct used for filtering heavy oil fumes, the addition of the filter unit 4 effectively extends the lifespan of the filtration consumables within the air duct. Simultaneously, it improves the filtration efficiency of the second air duct 20 for oil fumes.

[0067] like Figure 4 As shown, in this embodiment, the filter section 4 includes a cover plate 41, a filter screen 42 and a rotating screen 43. The cover plate 41 is placed over the air inlet 6 of the second air duct 20, the rotating screen 43 is embedded on the cover plate 41, and the filter screen 42 is placed over the rotating screen 43 and is disposed away from the air inlet 6 of the second air duct 20.

[0068] Specifically, filter screen 42 is a conventional filter screen used for filtering heavy oil fumes, and rotating screen 43 is a conventional filter screen with a rotating function. Rotating screen 43 is driven by a fan, which is electrically connected to a control board, to perform preliminary filtration of heavy oil fumes when the filter section 4 moves to the target air duct and the second air duct 20 opens. The cover plate 41 has the same dimensions as the air inlet 6 of the second air duct 20. The cover plate 41 is used to block the air inlet 40 to prevent oil fumes from escaping, thereby improving the filtration effect of the filter section 4.

[0069] In this embodiment, a guide plate 13 is also provided in the first air duct 10 and the second air duct 20. The guide plate 13 is located away from the air inlet 6 of the first air duct 10 and the second air duct 20. The guide plate 13 is an arc-shaped plate. By providing the guide plate 13 in the first air duct 10 and the second air duct 20, the flow rate of the filtered airflow circulating to the space where the integrated range hood and stove is located is increased.

[0070] In this embodiment, the integrated range hood and cooktop with internal circulation is provided with an air outlet 5 corresponding to the first air duct 10 and the second air duct 20. The air outlet 5 is located at both end faces of the integrated range hood and cooktop with internal circulation along the length direction.

[0071] Specifically, compared to the end face of the air outlet 5 located in the width direction of the integrated range hood and cooktop, the two end faces of the integrated range hood and cooktop along the length direction can avoid contact with the wall or correspond to the user's location. Therefore, while ensuring that the oil fumes are smoothly discharged after purification and filtration, the filtered oil fumes are prevented from flowing out towards the user's location, thus improving the user experience.

[0072] In this embodiment, the first air duct 10 also includes an auxiliary exhaust fan 2. The intake fan 1 and the auxiliary exhaust fan 2 are arranged sequentially along the extension direction of the first air duct 10. The intake fan 1 of the first air duct 10 is located between the air inlet 6 of the first air duct 10 and the auxiliary exhaust fan 2. The filter screen 11 is located between the intake fan 1 and the auxiliary exhaust fan 2 of the first air duct 10. The auxiliary exhaust fan 2 is located between the filter screen 11 and the activated carbon 12. The activated carbon 12 is arranged between the auxiliary exhaust fan 2 and the guide plate 13. The guide plate 13 is arranged close to the air outlet 5 of the first air duct 10.

[0073] Specifically, in addition to the intake fan 1, an exhaust fan 2 is additionally provided in the first air duct 10. By increasing the number of fans 2, when the first air duct 10 is open, there is no need to increase the speed of the intake fan 1. The intake fan 1 and the exhaust fan 2 work simultaneously. Compared with a single intake fan 1, the circulating air volume is increased, and the intake volume is increased without increasing the speed of the intake fan 1 and the exhaust fan 2. This reduces the intake resistance, improves the filtration and purification effect, and reduces the noise when circulating oil fumes in the first air duct 10, i.e., noise reduction. Both the intake fan 1 and the exhaust fan 2 are existing fans in the technology. Their structure has not been improved in this embodiment, and will not be described in detail here.

[0074] In this embodiment, the heating and adsorption assembly 21 includes a spiral heating resistance wire 211, an axial fan 212, and an adsorption layer 213, with several through holes formed on the adsorption layer 213. It is understood that the spiral heating resistance wire 211 has gaps allowing oil fumes to pass through and also functions to heat the oil fumes, thereby heating and oxidizing the heavy oil fumes that enter the second air duct 20 after passing through the filter section 4, thus filtering out gaseous pollutants in the heavy oil fumes. The axial fan 212 generates negative pressure to attract the flow of oil fumes, and the adsorption layer 213 is a plate material used in the prior art for filtering heavy oil fumes, which will not be described in detail here.

[0075] In this embodiment, the filter assembly 22 includes an activated carbon layer 221 and a composite layer 222. The activated carbon layer 221 has several through holes. The composite layer 222 is a composite filter used in the prior art for filtering heavy oil fumes. The composite layer 222 is disposed above the activated carbon layer 221. The heavy oil fumes filtered and purified by the heated adsorption assembly 21 first come into contact with the composite layer 222, and then pass through the activated carbon layer 221. The gaseous pollutants and smaller oil fume particles remaining after being filtered by the heated adsorption assembly 21 are filtered again through the activated carbon layer 221 and the composite layer 222.

[0076] In this embodiment, the filter 11 can be a HEPA filter. HEPA filters are suitable for filtering light oil fumes due to their simple filtration structure and low air resistance, thereby reducing air resistance and operating noise within the first air duct 10.

[0077] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A combined range hood and cooktop with internal circulation, characterized in that, The integrated range hood and cooktop with internal circulation includes: Multiple relatively independent air ducts are provided for filtering oil fumes of different concentrations. Each air duct is equipped with an air intake fan. The oil fume concentration sensor is installed at the air inlet of multiple air ducts. The oil fume concentration sensor is used to measure the current oil fume concentration of the air duct and compare it with the preset oil fume concentration. Based on the comparison result, the target air duct with the corresponding concentration is opened.

2. The integrated range hood and cooktop with internal circulation as described in claim 1, characterized in that, The plurality of air ducts include a first air duct and a second air duct. The first air duct further includes a filter screen and activated carbon. The filter screen is disposed between the air intake fan and the activated carbon in the first air duct. The second air duct also includes a heating adsorption component, a filter component, and an ozone decomposition component. The air intake fan of the second air duct is located near the air inlet of the second air duct. The heating adsorption component is located between the air intake fan and the filter component of the second air duct. The filter component is located between the heating adsorption component and the ozone decomposition component. The ozone decomposition component is located away from the air inlet of the second air duct.

3. The integrated range hood and cooktop with internal circulation as described in claim 2, characterized in that, The integrated range hood and stove with internal circulation also includes a filter unit, which is located at the air inlet of the second air duct and is connected to the second air duct.

4. The integrated range hood and cooktop with internal circulation as described in claim 3, characterized in that, The filtration section includes a cover plate, a filter screen, and a rotating screen. The cover plate is placed over the air inlet of the second air duct, the rotating screen is embedded in the cover plate, and the filter screen is placed on the rotating screen and positioned away from the air inlet of the second air duct.

5. The integrated range hood and cooktop with internal circulation as described in claim 2, characterized in that, The first air duct and the second air duct are also provided with guide plates, which are located away from the air inlets of the first air duct and the second air duct.

6. The integrated range hood and cooktop with internal circulation as described in claim 5, characterized in that, The integrated range hood and cooktop with internal circulation is provided with air outlets corresponding to the first air duct and the second air duct, and the air outlets are located at both end faces of the integrated range hood and cooktop along the length direction.

7. The integrated range hood and cooktop with internal circulation as described in claim 6, characterized in that, The first air duct also includes an exhaust fan. The intake fan and the exhaust fan are arranged sequentially along the extension direction of the first air duct. The intake fan of the first air duct is located between the air inlet of the first air duct and the exhaust fan. The filter screen is located between the intake fan and the exhaust fan of the first air duct. The exhaust fan is located between the filter screen and the activated carbon. The activated carbon is disposed between the exhaust fan and the guide plate. The guide plate is disposed near the air outlet of the first air duct.

8. The integrated range hood and cooktop with internal circulation as described in claim 2, characterized in that, The heating and adsorption assembly includes a spiral heating resistance wire, an axial fan, and an adsorption layer, wherein the adsorption layer has several through holes.

9. The integrated range hood and cooktop with internal circulation as described in claim 2, characterized in that, The filter assembly includes an activated carbon layer and a composite layer, and the activated carbon layer has a number of through holes.

10. The integrated range hood and cooktop with internal circulation as described in claim 2, characterized in that, The filter is a HEPA filter.

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