Range hood energy efficiency testing device and testing method

Abstract

The invention relates to the technical field of energy efficiency testing, and discloses an extractor hood energy efficiency testing device and a testing method.The extractor hood energy efficiency testing device comprises a bottom plate, the bottom plate further comprises a separating device, the separating device comprises a separating structure and a rotating structure, and the separating structure comprises a separating tank, a steam inlet pipe, a metal net cylinder and a floating ball valve; the separating tank is fixedly connected to the upper surface of the bottom plate, the steam inlet pipe is fixedly connected to the top face of the separating tank, the metal net cylinder is arranged in the separating tank, the floating ball valve is movably connected to the bottom end in the separating tank, and the rotating structure comprises a rotating shaft, a connecting piece, a partition plate, a connecting rod and a scraper. The rotating shaft rotationally penetrates into the separating tank from the top end of the separating tank, and the connecting piece is fixedly connected to the surface of the rotating shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of energy efficiency testing, and in particular to a range hood energy efficiency testing device and a testing method. Background Art

[0002] A range hood energy efficiency testing device is usually a device that detects the oil smoke exhausted by the range hood to test the energy efficiency of the range hood. Existing range hood energy efficiency testing devices usually do not process the oil exhausted by the range hood, resulting in inaccurate test results.

[0003] The invention patent with patent number CN201520248235.2 discloses a testing device for range hoods. The lifting device of the invention includes positioning support columns vertically arranged on the inner walls on the left and right sides of the test cabinet, and an adjustable support rod horizontally arranged on one side of the positioning support column. The flanges at both ends of the adjustable support rod cooperate with a slide groove vertically penetrating through one side of the positioning support column. The bottom of the slide groove is evenly arranged with positioning holes for adjusting the position of the adjustable support rod from top to bottom, and the positioning holes cooperate with the positioning columns arranged on the flanges. The setting of the adjustable support rod can insert the positioning column on the end flange into the positioning hole at the bottom of the slide groove along the slide groove, so as to conveniently and quickly adjust the position between the positioning support rod and the bottom heating device, and facilitate the placement and fixing of different types of range hoods. The utility model has a simple structure and can conveniently and quickly test a variety of range hoods. Although this patent solves the above-mentioned problems, there is still the problem that oil smoke cannot be separated, resulting in inaccurate detection. Therefore, it is necessary to design a range hood energy efficiency test device and test method that can separate oil and gas and facilitate the detector to accurately detect the oil discharge volume of the range hood. Summary of the invention

[0004] The object of the present invention is to provide a range hood energy efficiency testing device and testing method to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a range hood energy efficiency test device, comprising a base plate, the base plate also comprising a separation device, the separation device comprising a separation structure and a rotation structure, the separation structure comprising a separation tank, a steam inlet pipe, a metal mesh tube, and a float valve, the separation tank is fixedly connected to the upper surface of the base plate, the steam inlet pipe is fixedly connected to the top surface of the separation tank, the metal mesh tube is arranged inside the separation tank, the float valve is movably connected to the bottom end of the separation tank, the rotation structure comprises a rotating shaft, a connecting piece, a partition, a connecting rod, and a scraper, the rotating shaft rotates from the top of the separation tank to the inside of the separation tank, the connecting piece is fixedly connected to the surface of the rotating shaft, the connecting rod is fixedly connected to the bottom end of the rotating shaft surface, and the partition is fixedly connected to the end of the connecting rod away from the rotating shaft. The scraper is fixedly connected to the lower surface of the partition, the metal mesh cylinder is fixedly connected to the lower surface of the connecting piece, a motor is arranged on the top of the rotating shaft, the partition is movably connected to the inner wall of the separation tank, the scraper is slidably connected to the inner wall of the separation tank, the range hood discharges the absorbed oil smoke into the separation tank through the steam inlet pipe, and the gas mixed with the oil smoke enters the separation tank from the steam inlet pipe and fills up the inside of the separation tank, the oil therein adheres to the metal mesh cylinder, slides down along the metal mesh cylinder, then drips on the partition, and then flows from the center of the partition to the bottom of the separation tank, the motor drives the rotating shaft to rotate, the rotating shaft drives the connecting piece to rotate, the connecting piece drives the metal mesh cylinder to rotate, the metal mesh cylinder rotates, thereby intensifying the effect of gravity and making the oil fall more quickly, thereby improving the separation efficiency, at the same time, the rotating shaft drives the partition to rotate through the connecting rod, and the partition drives the scraper to rotate.

[0006] According to the above technical solution, a particle detection device is arranged above the separation tank, and the particle detection device includes an absorption structure and a stirring structure. The absorption structure includes a connecting pipe, a one-way valve, a particle detection chamber, and an isolation net. The connecting pipe is fixedly connected to the top of the separation tank, the particle detection chamber is fixedly connected to the top of the connecting pipe, the one-way valve is fixedly connected to the bottom surface of the inner wall of the particle detection chamber, and the isolation net is fixedly connected to the inner wall of the particle detection chamber. The stirring structure includes a stirring plate, a telescopic plate, a fixed end plate, a tension spring, and a movable end plate. The stirring plate is fixedly connected to the surface of the rotating shaft, the telescopic plate is slidably connected to the inner side surface of the stirring plate, the fixed end plate is fixedly connected to the outer side surface of the stirring plate, the tension spring is fixedly connected to the outer side surface of the stirring plate, and the movable end plate is fixedly connected to the outer surface of the telescopic plate. The top surface of the tank is fixedly connected, and the rotating shaft rotates from the top of the particle detection chamber to pass through the bottom of the particle detection chamber, and the rotating shaft rotates to pass through the bottom of the isolation net. Activated carbon is placed between the isolation net and the inner wall of the particle detection chamber, and a particle detection device is also arranged inside the particle detection chamber. The movable end plate is fixedly connected to the outer end of the tension spring, and the one-way valve is opened to allow the separated smoke to float into the particle detection chamber from the connecting pipe. After the smoke enters the particle detection chamber, it contacts the activated carbon through the isolation net. The isolation net absorbs the particulate matter in the smoke and then discharges the remaining gas. The rotation of the rotating shaft drives the stirring plate to rotate. The stirring plate stirs the activated carbon to increase its activity and the gas flow in the particle detection device, thereby improving the adsorption efficiency, and then facilitating rapid detection. The inertia generated by the rotation of the stirring plate throws the telescopic plate out, and the telescopic plate is reciprocated and extended by the pulling of the tension spring.

[0007] According to the above technical solution, a cooling device is provided on the left side of the particle detection chamber, and the cooling device includes an air collecting structure and a cooling structure. The air collecting structure includes a first air pipe, an air pump, a second air pipe, and a vortex tube. The first air pipe is fixedly connected to the left outer surface of the particle detection chamber, the air pump is fixedly connected to the bottom end of the first air pipe, the second air pipe is fixedly connected to the bottom end of the air pump, and the vortex tube is fixedly connected to the right end of the second air pipe. The cooling structure includes an oil outlet pipe, an oil discharge detection chamber, a cooling wall, a heat dissipation pipe port, a pressure spring, and a piston. The oil outlet pipe is fixedly connected to the bottom surface of the separation tank, the oil discharge detection chamber is fixedly connected to the bottom end of the oil outlet pipe, the cooling wall is fixedly connected to the end of the oil discharge detection chamber away from the separation tank, and the heat dissipation pipe port is fixedly connected to the oil discharge detection chamber. The top surface of the detection chamber, the pressure spring is fixedly connected to the top surface of the oil discharge detection chamber, the piston is fixedly connected to the top of the pressure spring, the air pump is fixedly connected to the upper surface of the bottom plate, the oil discharge detection chamber is fixedly connected to the left end of the vortex tube, the piston is slidably connected to the inner wall of the heat dissipation pipe mouth, the oil discharge detection chamber is fixedly connected to the bottom of the separation tank, and an oil discharge amount detector is arranged inside the oil discharge detection chamber. The gas flows into the air pump from the first air pipe, enters the vortex tube through the second air pipe after being compressed by the air pump, and the vortex tube separates the high-pressure gas into cold and hot gas and then inputs the cold air into the oil discharge detection chamber to cool the oil in the oil discharge detection chamber. The heat in the oil dissipates upward to lift the piston, thereby dissipating it. When the heat dissipates, the pressure spring drives the piston to reset and blocks the heat dissipation pipe mouth to prevent air from entering.

[0008] The cam is fixedly mounted on the support frame, and the cam is secured on a platform with a plurality of locking plates, the cam being secured to the support frame by a plurality of locking plates.

[0009] A testing method for a range hood energy efficiency testing device, comprising: S1: First, the motor drives the shaft to rotate, the shaft drives the connecting piece to rotate, the connecting piece drives the metal mesh cylinder to rotate, the metal mesh cylinder rotates to intensify the gravity effect so that the oil falls more quickly, and the separation efficiency is improved. At the same time, the shaft drives the partition to rotate through the connecting rod, the partition drives the scraper to rotate, and the scraper scrapes the oil on the inner wall of the bottom of the separation tank, avoiding the oil adhering to the inner wall of the separation tank, resulting in inaccurate oil output and thus reducing the accuracy of detection; S2: Then, the rotation of the rotating shaft drives the stirring plate to rotate. The stirring plate stirs the activated carbon to improve its activity and the gas flow in the particle detection device, thereby improving the adsorption efficiency, and then facilitating rapid detection. The inertia generated by the rotation of the stirring plate throws the telescopic plate out, and the telescopic plate is reciprocated and retracted by the pulling of the tension spring. The telescopic plate retracts and retracts, so that the turning efficiency of the activated carbon is improved; S3: Subsequently, the gas flows from the first gas pipe into the air pump, and after being compressed by the air pump, enters the vortex tube through the second gas pipe. The vortex tube separates the high-pressure gas into cold and hot gas, and then inputs the cold gas into the oil discharge detection chamber to cool the oil in the oil discharge detection chamber to prevent the oil from being too hot, making the detection more accurate. The heat in the oil dissipates upward to lift the piston, thereby dissipating it. When the heat dissipates, the pressure spring drives the piston to reset and blocks the heat dissipation pipe port to prevent air from entering. S4: Finally, place the range hood on the placement rod, and the range hood is clamped by the clamp rod on the support frame. After the clamp rod clamps the range hood, the range hood is fixed to ensure the stability of the range hood during the exhaust process. When the range hoods are of different sizes and models, the clamp rod will be squeezed after being placed on the placement rod. The squeezing causes the clamp rod to push the slider to move and squeeze the spring. The elastic force of the squeezing spring causes the clamp rod to clamp the range hoods of different sizes and models, thereby increasing the clamping range.

[0010] Compared with the prior art, the beneficial effects achieved by the present invention are: The present invention is provided with a connecting piece, a partition, a connecting rod and a scraper, and the scraper scrapes off the oil on the inner wall of the bottom of the separation tank, thereby preventing the oil from adhering to the inner wall of the separation tank, causing inaccurate oil output and thus reducing the accuracy of detection; The present invention is provided with a telescopic plate, a fixed end plate, a tension spring, and a movable end plate. The telescopic plate is extended and retracted to improve the turning efficiency of the activated carbon, thereby further accelerating the adsorption speed. The present invention is provided with a cooling wall, a heat dissipation pipe port, a pressure spring and a piston. When the heat dissipates, the pressure spring drives the piston to reset and blocks the heat dissipation pipe port to prevent air from entering, thereby further improving the detection accuracy. The present invention is provided with a slide groove, a squeeze spring and a sliding block. The elastic force of the squeeze spring enables the clamping rod to clamp range hoods of different sizes and types, thereby increasing the clamping range, so that range hoods of different sizes and types can all remain stable during the smoke exhaust process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0012] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the regular triaxial plane of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the positive triaxial section of the present invention; Figure 3 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the separation device of the present invention; Figure 4 The present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part; Figure 5 It is a schematic diagram of the front side cross-sectional three-dimensional structure of the particle detection device of the present invention; Figure 6 The present invention Figure 5 A schematic diagram of the enlarged structure of B; Figure 7 It is a schematic diagram of the three-dimensional structure of the cooling device of the present invention in a positive triaxial cross-section; Figure 8 The present invention Figure 7 Schematic diagram of the enlarged structure of C; Fig. 9 It is a schematic diagram of the three-dimensional structure of the supporting device of the present invention on the positive triaxial plane; In the figure: 1, bottom plate; 2, separation device; 21, separation tank; 22, steam inlet pipe; 23, metal mesh cylinder; 24, float valve; 25, rotating shaft; 26, connecting piece; 27, partition; 28, connecting rod; 29, scraper; 3, particle detection device; 31, connecting pipe; 32, one-way valve; 33, particle detection chamber; 34, isolation net; 35, stirring plate; 36, telescopic plate; 37, fixed end plate; 38, stretching Spring; 39, movable end plate; 4, cooling device; 41, first air pipe; 42, air pump; 43, second air pipe; 44, vortex tube; 45, oil outlet pipe; 46, oil discharge detection chamber; 47, cooling wall; 48, heat dissipation pipe outlet; 49, pressure spring; 410, piston; 5, supporting device; 51, supporting frame; 52, clamping rod; 53, placing rod; 54, slide groove; 55, extrusion spring; 56, slider. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] See also Figure 1-4 An embodiment of the present invention is: a range hood energy efficiency test device, comprising a bottom plate 1, the bottom plate 1 also includes a separation device 2, the separation device 2 includes a separation structure and a rotation structure, the separation structure includes a separation tank 21, a steam inlet pipe 22, a metal mesh tube 23, and a float valve 24, the separation tank 21 is fixedly connected to the upper surface of the bottom plate 1, the steam inlet pipe 22 is fixedly connected to the top surface of the separation tank 21, the metal mesh tube 23 is arranged inside the separation tank 21, and the float valve 24 is movably connected to the bottom end of the separation tank 21. When the oil at the bottom of the separation tank 21 accumulates to a certain amount, the buoyancy will cause the float valve 24 to float, thereby discharging the oil from the separation tank 21, thereby separating the oil and gas, so that the detector can accurately detect the oil discharge amount of the range hood, thereby comparing the oil discharge amount and the oil absorption amount of the range hood, and then detecting the oil absorption. Energy efficiency of the range hood, the rotating structure includes a rotating shaft 25, a connecting piece 26, a partition 27, a connecting rod 28, and a scraper 29. The rotating shaft 25 rotates from the top of the separation tank 21 to the inside of the separation tank 21. The connecting piece 26 is fixedly connected to the surface of the rotating shaft 25, the connecting rod 28 is fixedly connected to the bottom end of the surface of the rotating shaft 25, the partition 27 is fixedly connected to the end of the connecting rod 28 away from the rotating shaft 25, the scraper 29 is fixedly connected to the lower surface of the partition 27, the metal mesh cylinder 23 is fixedly connected to the lower surface of the connecting piece 26, a motor is arranged at the top of the rotating shaft 25, the partition 27 is movably connected to the inner wall of the separation tank 21, the scraper 29 is slidably connected to the inner wall of the separation tank 21, and the scraper 29 scrapes the oil on the inner wall of the bottom of the separation tank 21, thereby avoiding the oil adhering to the inner wall of the separation tank 21, resulting in inaccurate oil output and thus reducing the accuracy of detection; Working principle: The range hood discharges the absorbed oil smoke into the separation tank 21 through the steam inlet pipe 22. The gas mixed with the oil smoke enters the separation tank 21 from the steam inlet pipe 22 and fills the interior of the separation tank 21. The oil in it adheres to the metal mesh tube 23 and slides down the metal mesh tube 23, then drips on the partition 27, and then flows from the center of the partition 27 to the bottom of the separation tank 21. When the oil at the bottom of the separation tank 21 accumulates to a certain amount, the buoyancy will make the float valve 24 float up, so that the oil is discharged from the separation tank 21, and then the oil and gas are separated, which is convenient for the detector to accurately detect the oil discharge amount of the range hood, so as to compare The oil discharge and oil absorption volume of the range hood can be detected, and the energy efficiency of the range hood can be detected. The motor is started, and the motor drives the rotating shaft 25 to rotate, and the rotating shaft 25 drives the connecting piece 26 to rotate, and the connecting piece 26 drives the metal mesh tube 23 to rotate. The rotation of the metal mesh tube 23 intensifies the effect of gravity and makes the oil fall more quickly, thereby improving the separation efficiency. At the same time, the rotating shaft 25 drives the partition 27 to rotate through the connecting rod 28, and the partition 27 drives the scraper 29 to rotate. The scraper 29 scrapes the oil on the inner wall of the bottom of the separation tank 21, so as to avoid the oil adhering to the inner wall of the separation tank 21, resulting in inaccurate oil output and thus reducing the accuracy of the detection.

[0015] See also Figure 5-6 On the basis of the above embodiment, another embodiment of the present invention includes a particle detection device 3, the particle detection device 3 includes an absorption structure and a stirring structure, the absorption structure includes a connecting pipe 31, a one-way valve 32, a particle detection chamber 33, and an isolation net 34, the connecting pipe 31 is fixedly connected to the top of the separation tank 21, the particle detection chamber 33 is fixedly connected to the top of the connecting pipe 31, the one-way valve 32 is fixedly connected to the bottom surface of the inner wall of the particle detection chamber 33, the isolation net 34 is fixedly connected to the inner wall of the particle detection chamber 33, the isolation net 34 absorbs the particulate matter in the smoke, and then discharges the remaining gas, so that the particle detector can detect the particles in the oil smoke, and the stirring structure includes a stirring plate 35, a telescopic plate 36, a fixed end plate 37, a tension spring 38, and a movable end plate 39, the stirring plate 35 is fixedly connected The retractable plate 36 is connected to the surface of the rotating shaft 25, and is slidably connected to the inner side of the stirring plate 35. The fixed end plate 37 is fixedly connected to the outer side of the stirring plate 35. The tension spring 38 is fixedly connected to the outer side of the stirring plate 35. The movable end plate 39 is fixedly connected to the outer side of the retractable plate 36. The particle detection chamber 33 is fixedly connected to the top surface of the separation tank 21. The rotating shaft 25 rotates from the top of the particle detection chamber 33 to pass through the bottom of the particle detection chamber 33. The rotating shaft 25 rotates and passes through the bottom of the isolation net 34. Activated carbon is placed between the upper part of the isolation net 34 and the inner wall of the particle detection chamber 33, and a particle detection device is also arranged inside the particle detection chamber 33. The movable end plate 39 is fixedly connected to the outer end of the tension spring 38. The telescopic plate 36 is retracted to improve the turning efficiency of the activated carbon, thereby further accelerating the adsorption speed. Working principle: open the one-way valve 32 to let the separated smoke float into the particle detection chamber 33 from the connecting pipe 31. After the smoke enters the particle detection chamber 33, it contacts the activated carbon through the isolation net 34. The isolation net 34 absorbs the particulate matter in the smoke and then discharges the remaining gas, which is convenient for the particle detector to detect the particles in the oil smoke. The rotation of the rotating shaft 25 drives the stirring plate 35 to rotate. The stirring plate 35 stirs the activated carbon to improve its activity and the gas flow in the particle detection device 3, thereby improving the adsorption efficiency, and then facilitating rapid detection. The inertia generated by the rotation of the stirring plate 35 throws out the telescopic plate 36, and the telescopic plate 36 is reciprocated and retracted by the pulling of the tension spring 38. The telescopic plate 36 retracts and retracts, which improves the turning efficiency of the activated carbon and further accelerates the adsorption speed.

[0016] See also Figure 7-9On the basis of the above embodiment, another embodiment of the present invention includes a cooling device 4, the cooling device 4 includes an air collecting structure and a cooling structure, the air collecting structure includes a first air pipe 41, an air pump 42, a second air pipe 43, and a vortex tube 44, the first air pipe 41 is fixedly connected to the left outer surface of the particle detection chamber 33, the air pump 42 is fixedly connected to the bottom end of the first air pipe 41, the second air pipe 43 is fixedly connected to the bottom end of the air pump 42, the vortex tube 44 is fixedly connected to the right side of the second air pipe 43, the vortex tube 44 separates the high-pressure gas into cold and hot gas and then inputs the cold gas into the oil discharge detection chamber 46 to cool down the oil in the oil discharge detection chamber 46 to avoid the heat of the oil The amount is too high to make the detection more accurate. The cooling structure includes an oil outlet pipe 45, an oil discharge detection chamber 46, a cooling wall 47, a heat dissipation pipe port 48, a pressure spring 49, and a piston 410. The oil outlet pipe 45 is fixedly connected to the bottom surface of the separation tank 21, the oil discharge detection chamber 46 is fixedly connected to the bottom end of the oil outlet pipe 45, the cooling wall 47 is fixedly connected to the end of the oil discharge detection chamber 46 away from the separation tank 21, the heat dissipation pipe port 48 is fixedly connected to the top surface of the oil discharge detection chamber 46, the pressure spring 49 is fixedly connected to the top surface of the oil discharge detection chamber 46, the piston 410 is fixedly connected to the top of the pressure spring 49, the air pump 42 is fixedly connected to the upper surface of the bottom plate 1, and the oil discharge detection chamber 46 is fixedly connected to the left end of the vortex tube 44 The piston 410 is slidably connected to the inner wall of the heat dissipation pipe port 48, the oil discharge detection chamber 46 is fixedly connected to the bottom of the separation tank 21, and an oil discharge amount detector is arranged inside the oil discharge detection chamber 46. When the heat dissipates, the pressure spring 49 drives the piston 410 to reset and blocks the heat dissipation pipe port 48 to prevent air from entering, thereby further improving the detection accuracy. A supporting device 5 is arranged on the right side of the oil discharge detection chamber 46. The supporting device 5 includes a supporting structure and a stabilizing structure. The supporting structure includes a supporting frame 51, a clamping rod 52, and a placing rod 53. The supporting frame 51 is fixedly connected to the upper surface of the bottom plate 1, the clamping rod 52 is hingedly connected to the inner side of the supporting frame 51, and the placing rod 53 is fixedly connected to the supporting frame 5 1. On the inner side, the clamping rod 52 clamps the range hood to fix the range hood, ensuring the stability of the range hood during the exhaust process. The stabilizing structure includes a slide groove 54, a squeeze spring 56, and a slider 55. The slide groove 54 is arranged on the inner side of the placement rod 53. One end of the squeeze spring 56 is fixedly connected to the inner wall of the slide groove 54. The slider 55 is fixedly connected to the end of the squeeze spring 56 away from the separation tank. The clamping rod 52 is hingedly connected to the top surface of the slider 55. The slider 55 is slidably connected to the inner side of the slide groove 54. The elastic force of the squeeze spring 56 enables the clamping rod 52 to clamp range hoods of different sizes, thereby increasing the clamping range, so that range hoods of different sizes can remain stable during the exhaust process. Working principle: gas flows from the first gas pipe 41 into the air pump 42, and after being compressed by the air pump 42, enters the vortex tube 44 through the second gas pipe 43. The vortex tube 44 separates the high-pressure gas into cold and hot gas, and then inputs the cold gas into the oil discharge detection chamber 46 to cool the oil in the oil discharge detection chamber 46 to prevent the oil from being too hot, making the detection more accurate. The heat in the oil dissipates upward to lift the piston 410, so that it dissipates. When the heat dissipates, the pressure spring 49 drives the piston 410 to reset and blocks the heat dissipation pipe port 48 to prevent air from entering, further improving the detection accuracy. The range hood is placed on the placement rod 53, and the range hood is clamped by the clamp rod 52 on the support frame 51. The clamp rod 52 fixes the range hood after clamping it, thereby ensuring the stability of the range hood during the exhaust process. When the range hoods are of different sizes, the clamp rod 52 will be squeezed after being placed on the placement rod 53. The squeezing causes the clamp rod 52 to push the slider 55 to move and squeeze the squeezing spring 56. The elastic force of the squeezing spring 56 causes the clamp rod 52 to clamp the range hoods of different sizes, thereby increasing the clamping range, so that the range hoods of different sizes can remain stable during the exhaust process.

[0017] A testing method for a range hood energy efficiency testing device, comprising: S1: First, the motor drives the shaft to rotate, the shaft drives the connecting piece to rotate, the connecting piece drives the metal mesh cylinder to rotate, the metal mesh cylinder rotates to intensify the gravity effect so that the oil falls more quickly, and the separation efficiency is improved. At the same time, the shaft drives the partition to rotate through the connecting rod, the partition drives the scraper to rotate, and the scraper scrapes the oil on the inner wall of the bottom of the separation tank, avoiding the oil adhering to the inner wall of the separation tank, resulting in inaccurate oil output and thus reducing the accuracy of detection; S2: Then, the rotation of the rotating shaft drives the stirring plate to rotate. The stirring plate stirs the activated carbon to improve its activity and the gas flow in the particle detection device, thereby improving the adsorption efficiency, and then facilitating rapid detection. The inertia generated by the rotation of the stirring plate throws the telescopic plate out, and the telescopic plate is reciprocated and retracted by the pulling of the tension spring. The telescopic plate retracts and retracts, so that the turning efficiency of the activated carbon is improved; S3: Subsequently, the gas flows from the first gas pipe into the air pump, and after being compressed by the air pump, enters the vortex tube through the second gas pipe. The vortex tube separates the high-pressure gas into cold and hot gas, and then inputs the cold gas into the oil discharge detection chamber to cool the oil in the oil discharge detection chamber to prevent the oil from being too hot, making the detection more accurate. The heat in the oil dissipates upward to lift the piston, thereby dissipating it. When the heat dissipates, the pressure spring drives the piston to reset and blocks the heat dissipation pipe port to prevent air from entering. S4: Finally, place the range hood on the placement rod, and the range hood is clamped by the clamp rod on the support frame. After the clamp rod clamps the range hood, the range hood is fixed to ensure the stability of the range hood during the exhaust process. When the range hoods are of different sizes and models, the clamp rod will be squeezed after being placed on the placement rod. The squeezing causes the clamp rod to push the slider to move and squeeze the spring. The elastic force of the squeezing spring causes the clamp rod to clamp the range hoods of different sizes and models, thereby increasing the clamping range.

[0018] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A range hood energy efficiency testing device, comprising a bottom plate (1), characterized in that: Also included is a separation device (2), the separation device (2) comprising a separation structure and a rotation structure; The separation structure comprises a separation tank (21), a steam inlet pipe (22), a metal mesh cylinder (23), and a float valve (24); the separation tank (21) is fixedly connected to the upper surface of the bottom plate (1); the steam inlet pipe (22) is fixedly connected to the top surface of the separation tank (21); the metal mesh cylinder (23) is arranged inside the separation tank (21); and the float valve (24) is movably connected to the bottom end inside the separation tank (21); The rotating structure comprises a rotating shaft (25), a connecting member (26), a partition (27), a connecting rod (28), and a scraper (29); the rotating shaft (25) rotates from the top of the separation tank (21) to penetrate into the interior of the separation tank (21); the connecting member (26) is fixedly connected to the surface of the rotating shaft (25); the connecting rod (28) is fixedly connected to the bottom end of the surface of the rotating shaft (25); the partition (27) is fixedly connected to an end of the connecting rod (28) away from the rotating shaft (25); and the scraper (29) is fixedly connected to the lower surface of the partition (27).

2. The range hood energy efficiency testing device according to claim 1, characterized in that: The metal mesh cylinder (23) is fixedly connected to the lower surface of the connecting member (26), a motor is provided at the top end of the rotating shaft (25), the partition plate (27) is movably connected to the inner wall of the separation tank (21), and the scraper (29) is slidably connected to the inner wall of the separation tank (21).

3. The range hood energy efficiency testing device according to claim 2, characterized in that: A particle detection device (3) is arranged above the separation tank (21), the particle detection device (3) comprising an absorption structure and a stirring structure, the absorption structure comprising a connecting pipe (31), a one-way valve (32), a particle detection chamber (33), and an isolation net (34), the connecting pipe (31) being fixedly connected to the top of the separation tank (21), the particle detection chamber (33) being fixedly connected to the top of the connecting pipe (31), the one-way valve (32) being fixedly connected to the bottom surface of the inner wall of the particle detection chamber (33), and the isolation net (34) being fixedly connected to the particle detection chamber. (33) inner wall, the stirring structure comprises a stirring plate (35), a telescopic plate (36), a fixed end plate (37), a tension spring (38), and a movable end plate (39), the stirring plate (35) is fixedly connected to the surface of the rotating shaft (25), the telescopic plate (36) is slidably connected to the inner side surface of the stirring plate (35), the fixed end plate (37) is fixedly connected to the outer side surface of the stirring plate (35), the tension spring (38) is fixedly connected to the outer side surface of the stirring plate (35), and the movable end plate (39) is fixedly connected to the outer surface of the telescopic plate (36).

4. The range hood energy efficiency testing device according to claim 3, characterized in that: The particle detection chamber (33) is fixedly connected to the top surface of the separation tank (21); the rotating shaft (25) rotates from the top of the particle detection chamber (33) to pass through the bottom of the particle detection chamber (33); the rotating shaft (25) rotates to pass through the bottom of the isolation net (34); activated carbon is placed between the top of the isolation net (34) and the inner wall of the particle detection chamber (33); and a particle detection device is also arranged inside the particle detection chamber (33); the movable end plate (39) is fixedly connected to the outer end of the tension spring (38).

5. The range hood energy efficiency testing device according to claim 4, characterized in that: A cooling device (4) is provided on the left side of the particle detection chamber (33), the cooling device (4) comprising an air collecting structure and a cooling structure, the air collecting structure comprising a first air delivery pipe (41), an air pump (42), a second air delivery pipe (43), and a vortex tube (44), the first air delivery pipe (41) being fixedly connected to the left outer surface of the particle detection chamber (33), the air pump (42) being fixedly connected to the bottom end of the first air delivery pipe (41), the second air delivery pipe (43) being fixedly connected to the bottom end of the air pump (42), the vortex tube (44) being fixedly connected to the right side end of the second air delivery pipe (43), and the cooling structure comprising an oil outlet pipe (41). 5), an oil discharge detection chamber (46), a cooling wall (47), a heat dissipation pipe port (48), a pressure spring (49), and a piston (410), wherein the oil outlet pipe (45) is fixedly connected to the bottom surface of the separation tank (21), the oil discharge detection chamber (46) is fixedly connected to the bottom end of the oil outlet pipe (45), the cooling wall (47) is fixedly connected to an end of the oil discharge detection chamber (46) away from the separation tank (21), the heat dissipation pipe port (48) is fixedly connected to the top surface of the oil discharge detection chamber (46), the pressure spring (49) is fixedly connected to the top surface of the oil discharge detection chamber (46), and the piston (410) is fixedly connected to the top end of the pressure spring (49).

6. The range hood energy efficiency testing device according to claim 5, characterized in that: The air pump (42) is fixedly connected to the upper surface of the bottom plate (1), the oil discharge detection chamber (46) is fixedly connected to the left end of the vortex tube (44), the piston (410) is slidably connected to the inner wall of the heat dissipation pipe opening (48), the oil discharge detection chamber (46) is fixedly connected to the bottom of the separation tank (21), and an oil discharge amount detector is arranged inside the oil discharge detection chamber (46).

7. The range hood energy efficiency testing device according to claim 6, characterized in that: A support device (5) is provided on the right side of the oil discharge detection chamber (46). The support device (5) comprises a support structure and a stabilizing structure. The support structure comprises a support frame (51), a clamping rod (52), and a placement rod (53). The support frame (51) is fixedly connected to the upper surface of the base plate (1). The clamping rod (52) is hingedly connected to the inner side of the support frame (51). The placement rod (53) is fixedly connected to the inner side of the support frame (51). The stabilizing structure comprises a slide groove (54), an extrusion spring (56), and a slider (55). The slide groove (54) is provided on the inner side of the placement rod (53). One end of the extrusion spring (56) is fixedly connected to the inner wall of the slide groove (54). The slider (55) is fixedly connected to the end of the extrusion spring (56) away from the separation tank.

8. The range hood energy efficiency testing device according to claim 7, characterized in that: The clamping rod (52) is hingedly connected to the top surface of the sliding block (55), and the sliding block (55) is slidably connected to the inner side surface of the sliding groove (54).

9. The testing method of the range hood energy efficiency testing device according to claim 7, characterized in that: include: S1: First, the motor drives the rotating shaft (25) to rotate, the rotating shaft (25) drives the connecting piece (26) to rotate, the connecting piece (26) drives the metal mesh cylinder (23) to rotate, the metal mesh cylinder (23) rotates, thereby intensifying the effect of gravity and causing the oil to fall more quickly, thereby improving the separation efficiency. At the same time, the rotating shaft (25) drives the partition (27) to rotate through the connecting rod (28), the partition (27) drives the scraper (29) to rotate, and the scraper (29) scrapes the oil on the inner wall of the bottom of the separation tank (21), thereby preventing the oil from adhering to the inner wall of the separation tank (21) and causing inaccurate oil output, thereby reducing the accuracy of detection; S2: Then, the rotating shaft (25) rotates to drive the stirring plate (35) to rotate. The stirring plate (35) stirs the activated carbon to improve its activity and the gas flow in the particle detection device (3), thereby improving the adsorption efficiency, thereby facilitating rapid detection. The inertia generated by the rotation of the stirring plate (35) throws the telescopic plate (36) out, and the telescopic plate (36) is reciprocated and retracted by the pulling of the tension spring (38). The telescopic plate (36) is retracted and retracted, so that the turning efficiency of the activated carbon is improved; S3: Subsequently, the gas flows from the first gas delivery pipe (41) into the air pump (42), is compressed by the air pump (42), and then enters the vortex tube (44) through the second gas delivery pipe (43). The vortex tube (44) separates the high-pressure gas into cold and hot gas, and then inputs the cold gas into the oil discharge detection chamber (46) to cool the oil in the oil discharge detection chamber (46) to prevent the oil from being too hot, so as to make the detection more accurate. The heat in the oil is dissipated upward to lift the piston (410), so as to be dissipated. When the heat dissipates, the pressure spring (49) drives the piston (410) to reset and blocks the heat dissipation pipe opening (48) to prevent air from entering. S4: Finally, the range hood is placed on the placement rod (53), and the range hood is clamped by the clamp rod (52) on the support frame (51). The clamp rod (52) clamps the range hood to fix the range hood, thereby ensuring the stability of the range hood during the exhaust process. When the range hoods are of different sizes, the clamp rod (52) will be squeezed after being placed on the placement rod (53). The squeezing causes the clamp rod (52) to push the slider (55) to move and squeeze the squeezing spring (56). The elastic force of the squeezing spring (56) causes the clamp rod (52) to clamp the range hoods of different sizes, thereby increasing the clamping range.

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