Method for detecting suction power of range hood

Abstract

The application provides a range hood suction force detection method and relates to the range hood detection field, and comprises the following detection steps: a sealed box body is arranged at the suction direction of the range hood, and a plurality of small holes are arranged in the sealed box body; a control valve for independently controlling the air inflow and outflow and a gas storage structure independently connected with each control valve are embedded in each small hole; the opening and closing actions of the control valve are matched with the pressurization and pressure release actions in the sealed box body, specifically, the control valve is closed during the pressurization, the control valve is in communication with the space in the sealed box body, and the gas storage structure can obtain the smoke; on the contrary, the control valve is opened during the pressure release, the control valve is closed with the space in the sealed box body, and the gas storage structure uniformly releases the smoke outward through the control valve; the smoke with the consistent flow rate of each control valve is observed to detect the suction force influence range of the range hood and calculate the suction force.

Description

Technical Field

[0001] This invention relates to the field of range hood testing, and more particularly to a method for testing the suction power of a range hood. Background Technology

[0002] Suction power is a key indicator of the quality of a range hood. There are several ways to test suction power, including using an anemometer to measure the wind speed at the exhaust end and calculating the suction strength, or setting colored smoke at the exhaust front to simulate cooking fumes and calculating the suction range based on the smoke direction. Compared to the former, the simulated cooking fumes testing method is more in line with actual working conditions and is therefore more popular.

[0003] Setting up a method to detect colored smoke simulating e-liquid requires controlling the initial velocity of the colored smoke overflowing. That is, the suction power in the core area is usually greater than that outside the core area. Therefore, it can be predicted that the smoke flow velocity in the core area will definitely be greater than that outside the core area. In addition, the device simulating colored smoke does not individually control the flow velocity of each opening, which causes most of the colored smoke to flow out from the core area. As a result, areas far from the core area have little or no smoke flowing out, making it difficult to accurately measure the range hood's suction range / suction power. Summary of the Invention

[0004] The purpose of this invention is to provide a method for detecting the suction power of a range hood, in order to solve the technical problem that the smoke flow velocity in the core area is greater than that outside the core area, and the device simulating colored smoke does not individually control the flow velocity of each opening, resulting in colored smoke flowing out mostly from the core area, while areas far from the core area have little or no smoke flowing out, making it difficult to accurately measure the suction range / suction power of the range hood.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] The method for testing the suction power of a range hood includes the following testing steps:

[0007] 1) Install a sealed box in the direction of the range hood's suction, and arrange several small holes in the sealed box;

[0008] 2) An independent control valve for controlling the airflow is embedded in each small hole, along with an air storage structure independently connected to each control valve;

[0009] 3) The opening and closing action of the control valve is matched with the pressurization and depressurization actions in the sealed box. Specifically, when pressurizing, the control valve is closed, the control valve is connected to the space inside the sealed box, and the gas storage structure is filled with smoke. Conversely, when depressurizing, the control valve is opened, the control valve is closed to the space inside the sealed box, and the gas storage structure releases smoke evenly to the outside through the control valve.

[0010] 4) Each control valve releases smoke with a consistent flow rate. By observing the direction of the smoke, the range of influence of the range hood's suction power is detected and the suction power is calculated.

[0011] A range hood suction power detector includes a housing and several opening and closing controls arranged in a flat array on the housing, wherein each opening and closing control is equipped with an independent vesicle; and

[0012] A scroll, located outside the area of ​​several opening and closing control components, is inserted vertically into the box body along its width and rotatably connected to it; and

[0013] The pressurizing component is located outside the array area of ​​several opening and closing control components and opposite to the reel. The pressurizing component is fixed to the box body along the length direction of the box body, and a flexible rod is stretched across the box body and contacts the multiple opening and closing control components arrayed along the length direction between the pressurizing component and the box body. When the box body is wound around the flexible rod, the pressurizing component pressurizes the box body and diverts the pressure into the vesicle through the opening and closing control components. Alternatively, when the box body loosens the flexible rod, the vesicle closes with the box body and communicates with the external environment of the box body.

[0014] Preferably, the opening and closing control component includes a cup sleeve that is inserted directly into the box body, wherein the cup sleeve has a cup sleeve cavity, and an insertion tube is sleeved inside the cup sleeve cavity, the insertion tube having a lumen.

[0015] Three shunt holes communicating with the lumen surround the cannula array;

[0016] An insertion air inlet that communicates with the lumen is provided between any two adjacent diversion holes;

[0017] Three diversion channels are set from the top of the cup sleeve downwards and communicate with the cup sleeve cavity, and each diversion channel coincides with any diversion hole when the cannula is axially rotated inside the cup sleeve;

[0018] An air inlet is provided at the cup sleeve, and the air inlet is made to coincide with the air inlet of the insertion tube when the insertion tube rotates axially inside the cup sleeve.

[0019] Preferably, when the air inlet of the insertion tube coincides with the air inlet of the cup sleeve, the flow divider channel and the flow divider hole are misaligned; when the flow divider channel and the flow divider hole coincide, the air inlet of the insertion tube and the air inlet of the cup sleeve are misaligned.

[0020] Preferably, a vesicle insert is installed at the vesicle and inserted into the cup sleeve cavity.

[0021] Preferably, an outwardly extending end is provided at the bottom of the cannula, which contacts the flexible rod, and when the flexible rod moves along the length of the box body, the cannula connected to the end is axially rotated within the cup sleeve.

[0022] Preferably, the pressurizing component includes a sleeve fixed to the box body and a piston placed inside the sleeve and slidingly engaged with the sleeve, wherein a cap is embedded at the end of the sleeve, and one end of the flexible rod passes through the cap into the sleeve and is connected to the piston.

[0023] And a spring, placed inside the sleeve opposite the flexible rod, wherein the ends of the spring are fixed to the piston and the sealed end of the sleeve respectively;

[0024] And a first one-way valve, fixed at the sleeve and connected to the sleeve, is used to increase pressure into the box body through the cover when the soft rod pulls the piston, or to increase pressure into the sleeve through the first one-way valve when the spring pulls the piston.

[0025] Preferably, a second one-way valve is embedded in the sleeve at the cap. The second one-way valve connects the box body and the piston when the soft rod pulls the sleeve, and closes the box body and the piston when the spring pulls the piston.

[0026] Preferably, a handle is installed at the end of the roll that extends outward.

[0027] The beneficial effects of this invention are:

[0028] This invention minimizes the influence of factors such as suction force and smoke flow rate by controlling the smoke overflow speed at each point. Specifically, it releases smoke with a consistent flow rate at each point and observes the direction of the smoke to detect the range of influence of the range hood's suction and calculate the suction force. Attached Figure Description

[0029] Figure 1 A schematic diagram of the suction power detector for a range hood;

[0030] Figure 2 for Figure 1 The diagram shows the structure of the range hood's suction power detector after removing the sealing plate and protective cover.

[0031] Figure 3 for Figure 1 The diagram shows a partial structural schematic of the range hood's suction power detector.

[0032] Figure 4 This is a schematic diagram of the opening and closing control component after it has been separated, when smoke is being accumulated.

[0033] Figure 5 This is a schematic diagram of the opening and closing control component after it is separated, when releasing smoke.

[0034] Figure 6 This is a three-dimensional sectional view of the pressurization component;

[0035] Reference numerals: 1. Box body; 2. Vesicle; 3. Opening / closing control component; 31. Cup sleeve; 32. Cup sleeve cavity; 33. Diverting channel; 34. Cup sleeve air inlet; 35. Insertion tube; 36. Diverting hole; 37. Tube cavity; 38. Insertion tube air inlet; 39. Outer end; 4. Pressurizing component; 41. Spring; 42. Piston; 43. Sleeve; 44. One-way valve; 45. Cap; 5. First chamber; 6. Reel; 7. Through groove; 8. Second chamber; 9. Flexible rod; 10. Handle; 11. Vesicle insert. Detailed Implementation

[0036] To make the technical means, creative features, achieved objectives, and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention.

[0037] Specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0038] Example 1

[0039] The method for testing the suction power of a range hood includes the following testing steps:

[0040] ① Install a sealed box in the direction of the range hood's suction, and arrange several small holes in the sealed box;

[0041] ② An independent control valve for controlling airflow is embedded in each small hole, along with an air storage structure independently connected to each control valve;

[0042] ③ The opening and closing action of the control valve is adapted to the pressurization and depressurization actions in the sealed box. Specifically, when pressurizing, the control valve is closed, the control valve is connected to the space inside the sealed box, and the gas storage structure is filled with smoke. Conversely, when depressurizing, the control valve is opened, the control valve is closed to the space inside the sealed box, and the gas storage structure releases smoke evenly to the outside through the control valve.

[0043] ④ Each control valve releases smoke with a consistent flow rate. By observing the direction of the smoke, the range of influence of the range hood's suction power is detected and the suction power is calculated.

[0044] Example 2

[0045] This embodiment proposes a range hood suction power detector, which is the range hood suction power detector of the method described in Embodiment 1, such as... Figure 1-2As shown, its main body is a box body 1 with a second chamber 8. In addition, several opening and closing control elements 3 are arrayed on the top of the box body 1 in a flat manner, and each opening and closing control element 3 is equipped with an independent vesicle 2. It should be noted that the opening and closing control elements 3 are inserted into the box body 1 in a straight insertion manner, and the opening and closing control elements 3 also extend into the second chamber 8.

[0046] As described above, the box body 1 has a second chamber 8, such as Figure 2 As shown, the second chamber 8 has shaft cavities and the first chamber 5 located on both sides outside the array area of ​​the opening and closing control element 3. Additionally, as... Figure 2 and Figure 3 As shown, both the shaft cavity and the first chamber 5 are connected to the second chamber 8 through a through groove 7.

[0047] Please see Figure 1-3 A scroll 6 is inserted into the shaft cavity, and the scroll 6 can rotate within the shaft cavity. A pressure booster 4 is provided in the first chamber 5. It should be noted that the arrangement direction of the pressure booster 4 is preferably parallel to the length direction of the box body 1.

[0048] Please continue reading. Figure 1-3 There is a linkage between the reel 6 and the pressurizing component 4. Specifically, a flexible rod 9 is pulled horizontally. This flexible rod 9 passes through the through groove 7 and connects to both the reel 6 and the pressurizing component 4. It should be noted that the flexible rod 9 is in contact with both the reel 6 and the opening and closing control component 3. Therefore, it can be predicted that when the reel 6 pulls or loosens the flexible rod 9, the opening and closing control component 3 will have a corresponding action. The following is a detailed explanation with examples:

[0049] The core of this embodiment is to enable each opening and closing control element 3 to release smoke with a consistent flow rate. Thus, each individually configured vesicle 2 of each opening and closing control element 3 needs to accumulate the same volume of smoke. For this purpose, a roller 6 is used to wind a flexible rod 9, which pulls the pressurizing element 4 to pressurize (inject smoke) into the second chamber 8. When the flexible rod 9 is wound, there is actually a movement within the second chamber 8. In addition, the flexible rod 9 is in contact with multiple opening and closing control elements 3 in a row. During pressurization, the movement of the flexible rod 9 controls the opening and closing control element 3, making the vesicle 2 connected to the second chamber 8 and diverting the pressure into the vesicle 2. Conversely, when the flexible rod 9 is loosened from the roller 6, the flexible rod 9 actually moves in the opposite direction. The flexible rod 9 controls the opening and closing control element 3, making the vesicle 2 closed to the second chamber 8 and connecting the vesicle 2 to the space outside the box body 1, using the vesicle 2 to discharge the diverted smoke outward.

[0050] It should be noted that although each opening and closing control component 3 is equipped with an independent vesicle 2, the material and shrinkage coefficient of the vesicle 2 are the same. Therefore, when the flexible rod 9 is loosened from the roller 6, the smoke flow rate discharged from each vesicle 2 tends to be consistent.

[0051] Please see Figure 3-5 The specific configuration of the opening and closing control element 3 in this embodiment will be described below:

[0052] like Figure 4 and Figure 5 As shown, the opening and closing control component 3 includes a cup sleeve 31 that is inserted directly into the box body 1. The cup sleeve 31 has a cup sleeve cavity 32, and the cup sleeve cavity 32 contains an insertion tube 35. It should be noted that the insertion tube 35 has a lumen 37.

[0053] In addition, three diversion holes 36 connected to the lumen 37 are arranged around the insertion tube 35, and an insertion tube air inlet 38 connected to the lumen 37 is provided between any two adjacent diversion holes 36 (the insertion tube air inlet 38 is located below the diversion holes 36).

[0054] like Figure 4 and Figure 5 To accommodate the insertion tube 35, the cup sleeve 31 has three diversion channels 33 connected to the cup sleeve cavity 32, with the top of the cup sleeve 31 facing downwards. Each diversion channel 33 coincides with any diversion hole 36 when the insertion tube 35 rotates axially within the cup sleeve 31. In addition, a cup sleeve air inlet 34 is provided at the cup sleeve 31, and the cup sleeve air inlet 34 coincides with the insertion tube air inlet 38 when the insertion tube 35 rotates axially within the cup sleeve 31.

[0055] In addition, an outwardly extending extension head 39 is provided at the bottom of the insertion tube 35 to cooperate with the flexible rod 9. Specifically, the extension head 39 contacts the flexible rod 9, and when the flexible rod 9 moves along the length direction of the box body 1, the insertion tube 35 connected to the extension head 39 rotates axially within the cup sleeve 31.

[0056] Install the vesicle insert 11 at vesicle 2 and insert the vesicle insert 11 into the cup sleeve cavity 32.

[0057] Based on the above description of the opening and closing control component 3, the rotation of the insertion tube 35 within the cup sleeve 31 has two specific functions: firstly, as... Figure 4 As shown, when the air inlet 38 of the insertion tube coincides with the air inlet 34 of the cup sleeve, the diversion channel 33 and the diversion hole 36 are misaligned. In this state, the smoke enters the cup sleeve cavity 32 from the tube cavity 37, and then enters the vesicle 2. Secondly, as... Figure 5 As shown, when the diversion channel 33 coincides with the diversion hole 36, the air inlet 38 of the insertion tube and the air inlet 34 of the cup sleeve are misaligned. In this state, the second chamber 8 and the lumen 37 are closed, and the combined channel spliced ​​by the diversion channel 33 and the diversion hole 36 allows the smoke in the vesicle 2 to be discharged outward from the lumen 37 through the combined channel.

[0058] Please see Figure 6 The specific configuration of the booster component 4 in this embodiment will be described below:

[0059] Regarding the pressurizing component 4, it includes a sleeve 43 fixed to the box body 1 and a piston 42 placed inside the sleeve 43 and slidingly engaged with the sleeve 43. A cap 45 is embedded at the end of the sleeve 43, and one end of the flexible rod 9 passes through the cap 45 into the sleeve 43 and is connected to the piston 42.

[0060] A spring 41 is also provided. The spring 41 is placed inside the sleeve 43 and is opposite to the flexible rod 9. The ends of the spring 41 are fixed to the piston 42 and the closed end of the sleeve 43, respectively.

[0061] A first one-way valve 44 is also provided. The first one-way valve 44 is fixed at the sleeve 43 and communicates with the sleeve 43. When the flexible rod 9 pulls the piston 42, the cap 45 pressurizes the box body 1, or when the spring 41 pulls the piston 42, the first one-way valve 44 pressurizes the sleeve 43.

[0062] It should be noted that a second one-way valve is embedded in the sleeve 43 at the cap 45. When the flexible rod 9 pulls the sleeve 43, the second one-way valve connects the box body 1 with the piston 42. When the spring 41 pulls the piston 42, the second one-way valve closes the box body 1 with the piston 42.

[0063] Please see Figure 1-3 In this embodiment, a handle 10 is installed at the outwardly extending end of the scroll 6 to facilitate personnel control of the scroll 6. In addition, for further control of the scroll 6, the handle 10 is preferably a U-shaped handle.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for testing the suction power of a range hood, characterized in that, The testing steps include the following: 1) Install a sealed box in the direction of the range hood's suction, and arrange several small holes in the sealed box; 2) An independent control valve for controlling the airflow is embedded in each small hole, along with an air storage structure independently connected to each control valve; 3) The opening and closing action of the control valve is adapted to the pressurization and depressurization actions in the sealed box. Specifically, when pressurizing, the control valve is closed, the control valve is connected to the space inside the sealed box, and the gas storage structure is filled with smoke. Conversely, when depressurizing, the control valve is opened, the control valve is closed to the space inside the sealed box, and the gas storage structure releases smoke evenly to the outside through the control valve. 4) Each control valve releases smoke with a consistent flow rate. By observing the direction of the smoke, the range of influence of the range hood's suction power is detected and the suction power is calculated. A range hood suction power detector for implementing a method for detecting the suction power of a range hood includes a housing and several opening and closing control components arranged in a flat array on the housing, wherein each opening and closing control component is equipped with an independent vesicle; and A scroll, located outside the area of ​​several opening and closing control components, is inserted vertically into the box body along its width and rotatably connected to it; and The pressurizing component is located outside the array area of ​​several opening and closing control components and opposite to the reel. The pressurizing component is fixed to the box body along the length direction of the box body. A flexible rod is stretched across the box body and contacts the multiple opening and closing control components arrayed along the length direction between the pressurizing component and the box body. When the box body is wound around the flexible rod, the pressurizing component pressurizes the box body and diverts the pressure into the vesicle through the opening and closing control components. Or, when the box body loosens the flexible rod, the vesicle closes with the box body and communicates with the external environment of the box body. The opening and closing control component includes a cup sleeve that is inserted directly into the box body, wherein the cup sleeve has a cup sleeve cavity, and an insertion tube is sleeved inside the cup sleeve cavity, and the insertion tube has a lumen. Three shunt holes communicating with the lumen surround the cannula array; An insertion port communicating with the lumen is provided between any two adjacent diversion ports. Three diversion channels are set from the top of the cup sleeve downwards and communicate with the cup sleeve cavity, and each diversion channel coincides with any diversion hole when the cannula is axially rotated inside the cup sleeve; An air inlet is provided at the cup sleeve, and the air inlet of the cup sleeve coincides with the air inlet of the insertion tube when the insertion tube rotates axially inside the cup sleeve. When the air inlet of the insertion tube coincides with the air inlet of the cup sleeve, the flow divider channel and the flow divider hole are misaligned; when the flow divider channel coincides with the flow divider hole, the air inlet of the insertion tube and the air inlet of the cup sleeve are misaligned. Install a vesicle insert at the vesicle and insert the vesicle insert into the cup sleeve cavity; An outwardly extending head is provided at the bottom of the cannula. The extended head contacts the flexible rod, and when the flexible rod moves along the length of the box body, the cannula connected to the extended head rotates axially within the cup sleeve.

2. The method for detecting the suction power of a range hood according to claim 1, characterized in that: The pressurizing component includes a sleeve fixed to the box body and a piston slidably fitted inside the sleeve, wherein a cap is embedded at the end of the sleeve, and one end of a flexible rod passes through the cap into the sleeve and connects to the piston; and A spring, placed inside the sleeve opposite the flexible rod, wherein the ends of the spring are fixed to the piston and the sealed end of the sleeve, respectively; and The first one-way valve is fixed at the sleeve and connected to the sleeve. It is used to increase pressure into the box body through the cover when the piston is pulled by the soft rod, or to increase pressure into the sleeve through the first one-way valve when the piston is pulled by the spring.

3. The method for detecting the suction power of a range hood according to claim 2, characterized in that: A second one-way valve is embedded in the sleeve at the cap. When the flexible rod pulls the sleeve, the second one-way valve connects the box body with the piston. When the spring pulls the piston, the second one-way valve closes the box body with the piston.

4. The method for detecting the suction power of a range hood according to claim 1, characterized in that: A handle is installed at the end of the roll that extends outward.

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