An energy efficiency test device and test method for a range hood

Abstract

The present invention relates to the technical field of energy efficiency testing, and discloses an energy efficiency testing device and a testing method for a range hood, including a bottom plate. The bottom plate further includes a separation device, and the separation device includes a separation structure and a rotation structure. The separation structure includes a separation tank, a steam inlet pipe, a metal mesh cylinder, and a float valve. The separation tank is fixedly connected to the upper surface of the bottom plate. The steam inlet pipe is fixedly connected to the top surface of the separation tank. The metal mesh cylinder is arranged inside the separation tank. The float valve is movably connected to the bottom end inside the separation tank. The rotation structure includes a rotating shaft, a connecting piece, a partition plate, a connecting rod, and a scraping plate. The rotating shaft rotates through the top end of the separation tank to the inside of the separation tank. 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 particularly to an energy efficiency testing device and method for a range hood. Background Technique

[0002] An energy efficiency testing device for a range hood is generally a device that detects the oil fume discharged by the range hood to test the energy efficiency of the range hood. The existing energy efficiency testing devices for range hoods usually do not process the oil discharged by the range hood, resulting in inaccurate test results.

[0003] The invention patent with the patent number CN201520248235.2 discloses a testing device for a range hood. The lifting device of the invention includes positioning support columns vertically arranged on the inner side walls of the left and right sides of the testing cabinet, and adjustable support rods horizontally arranged on one side of the positioning support columns. The flanges at both ends of the adjustable support rods are matched with the sliding grooves vertically penetrating through one side of the positioning support columns. The bottom of the sliding grooves is uniformly provided with positioning holes for adjusting the position of the adjustable support rods from top to bottom, and the positioning holes are matched 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 sliding groove along the sliding groove, so as to conveniently and quickly adjust the position between the positioning support rod and the bottom heating device, and it is convenient to place and fix different types of range hoods. The structure of the present invention is simple and can conveniently and quickly test a variety of range hoods. Although this patent solves the above problems, there is still a problem that oil fume separation cannot be carried out, resulting in inaccurate detection. Therefore, it is very necessary to design an energy efficiency testing device and method for a range hood that can separate oil and gas and facilitate the accurate detection of the oil discharge amount of the range hood by the detector. Summary of the Invention

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

[0005] To solve the above technical problems, the present invention provides the following technical solution: An energy efficiency test device for a range hood, including a bottom plate, and the bottom plate further includes a separation device. The separation device includes a separation structure and a rotation structure. The separation structure includes a separation tank, a steam inlet pipe, a metal mesh cylinder, and a float valve. The separation tank is fixedly connected to the upper surface of the bottom plate. The steam inlet pipe is fixedly connected to the top surface of the separation tank. The metal mesh cylinder is arranged inside the separation tank. The float valve is movably connected to the bottom end inside the separation tank. The rotation structure includes a rotating shaft, a connecting piece, a partition plate, a connecting rod, and a scraping plate. The rotating shaft rotates through the top end 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 surface of the rotating shaft. The partition plate is fixedly connected to the end of the connecting rod away from the rotating shaft. The scraping plate is fixedly connected to the lower surface of the partition plate. The metal mesh cylinder is fixedly connected to the lower surface of the connecting piece. A motor is arranged at the top end of the rotating shaft. The partition plate is movably connected to the inner wall of the separation tank. The scraping plate is slidably connected to the inner wall of the separation tank. The range hood discharges the sucked oil fume into the separation tank through the steam inlet pipe. The gas mixture formed by the oil fume fills the inside of the separation tank after entering the separation tank from the steam inlet pipe. The oil therein adheres to the metal mesh cylinder and slides down along the metal mesh cylinder, then drips onto the partition plate and flows to the bottom of the separation tank from the center of the partition plate. 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 rotation of the metal mesh cylinder intensifies the gravitational effect to make the oil fall more quickly, improving the separation efficiency. At the same time, the rotating shaft drives the partition plate to rotate through the connecting rod, and the partition plate drives the scraping plate to rotate.

[0006] According to the above technical solution, a particle detection device is provided above the separation tank. The particle detection device includes an absorption structure and a stirring structure. The absorption structure includes a connecting pipe, a check valve, a particle detection chamber, and a separation net. The connecting pipe is fixedly connected to the top end of the separation tank. The particle detection chamber is fixedly connected to the top end of the connecting pipe. The check valve is fixedly connected to the bottom surface of the inner wall of the particle detection chamber. The separation 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 surface of the stirring plate. The tension spring is fixedly connected to the outer side surface of the stirring plate. The movable end plate is fixedly connected to the outer surface of the telescopic plate. The particle detection chamber is fixedly connected to the top surface of the separation tank. The rotating shaft rotates through the top end of the particle detection chamber and penetrates out of the bottom end of the particle detection chamber. The rotating shaft rotates through to below the separation net. Activated carbon is placed between the upper part of the separation net and the inner wall of the particle detection chamber, and a particle detection device is also provided inside the particle detection chamber. The movable end plate is fixedly connected to the outer end of the tension spring. Open the check valve 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 separation net. The separation net adsorbs the particulate matter in the smoke, and then discharges the remaining gas. The rotation of the rotating shaft drives the rotation of the stirring plate, and 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 facilitating rapid detection. The inertia generated by the rotation of the stirring plate throws out the telescopic plate, and the telescopic plate reciprocates 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. The cooling device includes a gas collection structure and a cooling structure. The gas collection structure includes a first gas pipeline, a gas pump, a second gas pipeline, and a vortex tube. The first gas pipeline is fixedly connected to the left outer surface of the particle detection chamber. The gas pump is fixedly connected to the bottom end of the first gas pipeline. The second gas pipeline is fixedly connected to the bottom end of the gas pump. The vortex tube is fixedly connected to the right end of the second gas pipeline. The cooling structure includes an oil outlet pipe, an oil discharge detection chamber, a cooling wall, a heat dissipation pipe orifice, 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 one end of the oil discharge detection chamber away from the separation tank. The heat dissipation pipe orifice is fixedly connected to the top surface of the oil discharge 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 end of the pressure spring. The gas 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 orifice. The oil discharge detection chamber is fixedly connected to the bottom of the separation tank. An oil discharge detector is provided inside the oil discharge detection chamber. Gas flows from the first gas pipeline into the gas pump, and after being compressed by the gas pump, it enters the vortex tube through the second gas pipeline. The vortex tube separates the high-pressure gas into cold and hot gases and inputs the cold gas into the oil discharge detection chamber to cool the oil in the oil discharge detection chamber. The heat in the oil dissipates upward to push up the piston, and then dissipates. When the heat dissipates, the pressure spring drives the piston to reset to block the heat dissipation pipe orifice to prevent air from entering.

[0008] According to the above technical solution, a support device is provided on the right side of the oil discharge detection chamber. The support device includes a support structure and a stabilization structure. The support structure includes a support frame, a clamping rod, and a placement rod. The support frame is fixedly connected to the upper surface of the bottom plate. The clamping rod is hinged to the inner side surface of the support frame. The placement rod is fixedly connected to the inner side surface of the support frame. The stabilization structure includes a chute, a compression spring, and a slider. The chute is opened on the inner side of the placement rod. One end of the compression spring is fixedly connected to the inner wall of the chute. The slider is fixedly connected to the end of the compression spring away from the separation tank. The clamping rod is hinged to the top surface of the slider. The slider is slidably connected to the inner side surface of the chute. The range hood is placed on the placement rod and clamped by the clamping rod on the support frame. After the clamping rod clamps the range hood, the range hood is fixed. When the sizes and models of the range hoods are different, placing them on the placement rod will cause extrusion on the clamping rod. The extrusion causes the clamping rod to push the slider to move and compress the spring. The elastic force of the compression spring causes the clamping rod to clamp range hoods of different sizes and models.

[0009] A test method for an energy efficiency test device of a range hood, including:

[0010] S1: First, place the range hood on the placement rod. The range hood is clamped by the clamping rod on the support frame. After the clamping rod clamps the range hood, the range hood is fixed to ensure its stability during the exhaust process. When the sizes and models of the range hoods are different, placing them on the placement rod will cause extrusion on the clamping rod. The extrusion makes the clamping rod push the slider to move and compress the spring. The elastic force of the compressed spring makes the clamping rod clamp range hoods of different sizes and models, increasing the clamping range.

[0011] S2: Then, the motor drives the rotation of the rotating shaft. The rotating shaft drives the rotation of the connecting piece. The connecting piece drives the rotation of the metal mesh cylinder. The rotation of the metal mesh cylinder intensifies the gravitational effect, making the oil fall more quickly, improving the separation efficiency. At the same time, the rotating shaft drives the rotation of the partition through the connecting rod. The partition drives the rotation of the scraper. The scraper scrapes the oil on the inner wall of the bottom of the separation tank, preventing the oil from adhering to the inner wall of the separation tank, which may lead to inaccurate oil output and reduce the accuracy of detection.

[0012] S3: Subsequently, the rotation of the rotating shaft drives the rotation of the stirring plate. The stirring plate stirs the activated carbon, improving its activity and the gas flow in the particle detection device, thereby enhancing the adsorption efficiency and facilitating rapid detection. The inertia generated by the rotation of the stirring plate throws out the telescopic plate. The telescopic plate reciprocates under the pull of the tension spring, increasing the turnover efficiency of the activated carbon.

[0013] S4: Finally, the gas flows from the first air pipe into the air pump. After being compressed by the air pump, it enters the vortex tube through the second air pipe. The vortex tube separates the high-pressure gas into cold and hot gases, and then inputs the cold gas into the oil drainage detection chamber to cool the oil in the oil drainage detection chamber, preventing the oil from being too hot and making the detection more accurate. The heat in the oil dissipates upward, pushing up the piston, and then dissipates. When the heat dissipates, the pressure spring drives the piston to reset, blocking the heat dissipation pipe orifice to prevent air from entering.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0015] In the present invention, by providing a connecting piece, a partition, a connecting rod, and a scraper, the scraper scrapes the oil on the inner wall of the bottom of the separation tank, preventing the oil from adhering to the inner wall of the separation tank, which may lead to inaccurate oil output and reduce the accuracy of detection.

[0016] In the present invention, by providing a telescopic plate, a fixed end plate, a tension spring, and a movable end plate, the telescopic movement of the telescopic plate increases the turnover efficiency of the activated carbon, further accelerating the adsorption speed.

[0017] In the present invention, by providing a cooling wall, a heat dissipation pipe orifice, a pressure spring, and a piston, when the heat dissipates, the pressure spring drives the piston to reset, blocking the heat dissipation pipe orifice to prevent air from entering, further improving the detection accuracy.

[0018] In the present invention, by providing a sliding groove, a compression spring, and a slider, the elastic force of the compression spring causes the clamping rod to clamp range hoods of different sizes and models, increasing the clamping range and enabling range hoods of different sizes and models to remain stable during the smoke exhaust process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0020] In the drawings:

[0021] Figure 1 is a three-dimensional overall structure schematic diagram of the positive triaxial plane of the present invention;

[0022] Figure 2 is a three-dimensional structure schematic diagram of the positive triaxial plane section of the present invention;

[0023] Figure 3 is a three-dimensional structure schematic diagram of the front side section of the separation device of the present invention;

[0024] Figure 4 is the present invention Figure 3 an enlarged structure schematic diagram of A in;

[0025] Figure 5 is a three-dimensional structure schematic diagram of the front side section of the particle detection device of the present invention;

[0026] Figure 6 is the present invention Figure 5 an enlarged structure schematic diagram of B in;

[0027] Figure 7 is a three-dimensional structure schematic diagram of the positive triaxial plane section of the cooling device of the present invention;

[0028] Figure 8 is the present invention Figure 7 an enlarged structure schematic diagram of C in;

[0029] Figure 9 is a three-dimensional overall structure schematic diagram of the positive triaxial plane of the support device of the present invention;

[0030] 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 board; 28, connecting rod; 29, scraping plate; 3, particle detection device; 31, connecting pipe; 32, check valve; 33, particle detection chamber; 34, isolation net; 35, stirring plate; 36, telescopic plate; 37, fixed end plate; 38, tension spring; 39, movable end plate; 4, cooling device; 41, first gas transmission pipe; 42, air pump; 43, second gas transmission pipe; 44, vortex tube; 45, oil outlet pipe; 46, oil discharge detection chamber; 47, cooling wall; 48, heat dissipation pipe orifice; 49, pressure spring; 410, piston; 5, support device; 51, support frame; 52, clamping rod; 53, placing rod; 54, chute; 55, slider; 56, compression spring. Specific implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-4, an embodiment of the present invention is: an energy efficiency test device for a range hood, including a bottom plate 1. The bottom plate 1 further 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 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. The float valve 24 is movably connected to the bottom end inside 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, 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, thereby comparing the oil discharge amount and the oil absorption amount of the range hood, and then detecting the energy efficiency of the range hood. The rotation structure includes a rotating shaft 25, a connecting piece 26, a partition plate 27, a connecting rod 28, and a scraping plate 29. The rotating shaft 25 rotates through 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 surface of the rotating shaft 25. The partition plate 27 is fixedly connected to the end of the connecting rod 28 away from the rotating shaft 25. The scraping plate 29 is fixedly connected to the lower surface of the partition plate 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 end of the rotating shaft 25. The partition plate 27 is movably connected to the inner wall of the separation tank 21. The scraping plate 29 is slidably connected to the inner wall of the separation tank 21. The scraping plate 29 scrapes the oil on the inner wall of the bottom of the separation tank 21, avoiding the inaccurate oil discharge amount caused by the oil adhering to the inner wall of the separation tank 21 and reducing the accuracy of the detection;

[0033] Working principle: The range hood discharges the sucked oil fume into the separation tank 21 through the steam inlet pipe 22. The gas mixture of the oil fume fills the inside of the separation tank 21 after entering the separation tank 21 from the steam inlet pipe 22. The oil therein adheres to the metal mesh cylinder 23 and slides down along the metal mesh cylinder 23, then drips onto the partition plate 27, and then flows to the bottom of the separation tank 21 from the center of the partition plate 27. 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, 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, thereby comparing the oil discharge amount and the oil absorption amount of the range hood, and then detecting the energy efficiency of the range hood. Start the motor, 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, and the rotation of the metal mesh cylinder 23 intensifies the gravity effect to make the oil fall more quickly, improving the separation efficiency. At the same time, the rotating shaft 25 drives the partition plate 27 to rotate through the connecting rod 28, the partition plate 27 drives the scraping plate 29 to rotate, and the scraping plate 29 scrapes the oil on the inner wall of the bottom of the separation tank 21, avoiding the inaccurate oil discharge amount caused by the oil adhering to the inner wall of the separation tank 21 and reducing the accuracy of the detection.

[0034] Please refer to Figures 5-6, on the basis of the above embodiments, in another embodiment of the present invention, it 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 a separation net 34. The connecting pipe 31 is fixedly connected to the top end of the separation tank 21. The particle detection chamber 33 is fixedly connected to the top end 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 separation net 34 is fixedly connected to the inner wall of the particle detection chamber 33. The separation net 34 adsorbs the particulate matter in the smoke and then discharges the remaining gas, facilitating the particle detector to detect the particles in the oil fume. 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 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 surface of the stirring plate 35. The tension spring 38 is fixedly connected to the outer side surface of the stirring plate 35. The movable end plate 39 is fixedly connected to the outer surface of the telescopic plate 36. The particle detection chamber 33 is fixedly connected to the top surface of the separation tank 21. The rotating shaft 25 rotates through the top end of the particle detection chamber 33 and penetrates out of the bottom end of the particle detection chamber 33. The rotating shaft 25 rotates through to below the separation net 34. Activated carbon is placed between the upper part of the separation net 34 and the inner wall of the particle detection chamber 33, and a particle detection device is also provided 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 movement of the telescopic plate 36 improves the turning efficiency of the activated carbon and further speeds up the adsorption speed;

[0035] Working principle: Open the one-way valve 32 to allow the separated smoke to 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 separation net 34. The separation net 34 adsorbs the particulate matter in the smoke and then discharges the remaining gas, facilitating the particle detector to detect the particles in the oil fume. The rotation of the rotating shaft 25 drives the rotation of the stirring plate 35. The stirring plate 35 stirs the activated carbon, improving its activity and the gas flow inside the particle detection device 3, thereby enhancing the adsorption efficiency and facilitating rapid detection. The inertia generated by the rotation of the stirring plate 35 throws out the telescopic plate 36. The telescopic plate 36 reciprocally expands and contracts under the pull of the tension spring 38. The telescopic movement of the telescopic plate 36 improves the turning efficiency of the activated carbon and further speeds up the adsorption speed.

[0036] Please refer to Figures 7-9, on the basis of the above embodiments, in another embodiment of the present invention, it includes a cooling device 4. The cooling device 4 includes a gas collection structure and a cooling structure. The gas collection structure includes a first gas pipeline 41, an air pump 42, a second gas pipeline 43, and a vortex tube 44. The first gas pipeline 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 gas pipeline 41. The second gas pipeline 43 is fixedly connected to the bottom end of the air pump 42. The vortex tube 44 is fixedly connected to the right end of the second gas pipeline 43. The vortex tube 44 separates high-pressure gas into cold and hot gases and then inputs the cold gas into the oil drainage detection chamber 46 to cool the oil in the oil drainage detection chamber 46, avoiding the oil having too high a temperature and making the detection more accurate. The cooling structure includes an oil outlet pipe 45, an oil drainage detection chamber 46, a cooling wall 47, a heat dissipation pipe orifice 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 drainage 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 drainage detection chamber 46 away from the separation tank 21. The heat dissipation pipe orifice 48 is fixedly connected to the top surface of the oil drainage detection chamber 46. The pressure spring 49 is fixedly connected to the top surface of the oil drainage detection chamber 46. The piston 410 is fixedly connected to the top end of the pressure spring 49. The air pump 42 is fixedly connected to the upper surface of the bottom plate 1. The oil drainage 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 orifice 48. The oil drainage detection chamber 46 is fixedly connected to the bottom of the separation tank 21. An oil drainage detector is provided inside the oil drainage detection chamber 46. When the heat dissipates, the pressure spring 49 drives the piston 410 to reset and block the heat dissipation pipe orifice 48 to prevent air from entering, further improving the detection accuracy. A support device 5 is provided on the right side of the oil drainage detection chamber 46. The support device 5 includes a support structure and a stabilization structure. The support structure includes 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 bottom plate 1. The clamping rod 52 is hingedly connected to the inner side surface of the support frame 51. The placement rod 53 is fixedly connected to the inner side surface of the support frame 51. The clamping rod 52 clamps the range hood to fix it, ensuring the stability of the range hood during the exhaust process. The stabilization structure includes a chute 54, a compression spring 56, and a slider 55. The chute 54 is opened on the inner side of the placement rod 53. One end of the compression spring 56 is fixedly connected to the inner wall of the chute 54. The slider 55 is fixedly connected to the end of the compression 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 surface of the chute 54. The elastic force of the compression spring 56 enables the clamping rod 52 to clamp range hoods of different sizes and models, increasing the clamping range and enabling range hoods of different sizes and models to maintain stability during the smoke exhaust process;

[0037] Working principle: The gas flows into the air pump 42 from the first gas pipeline 41, and after being compressed by the air pump 42, it enters the vortex tube 44 through the second gas pipeline 43. The vortex tube 44 separates the high-pressure gas into cold and hot gases, and then inputs the cold gas into the oil drainage detection chamber 46 to cool the oil in the oil drainage detection chamber 46, avoiding the oil having too high a temperature and making the detection more accurate. The heat in the oil dissipates upward to lift the piston 410, and then dissipates. When the heat dissipates, the pressure spring 49 drives the piston 410 to reset to block the heat dissipation pipe orifice 48 to prevent air from entering, further improving the detection accuracy.

[0038] Place the range hood on the placement rod 53. The range hood is clamped by the clamping rod 52 on the support frame 51. After the clamping rod 52 clamps the range hood, the range hood is fixed, ensuring the stability of the range hood during the exhaust process. When the sizes and models of the range hoods are different, placing them on the placement rod 53 will cause extrusion on the clamping rod 52. The extrusion causes the clamping rod 52 to push the slider 55 to move and compress the compression spring 56. The elastic force of the compression spring 56 enables the clamping rod 52 to clamp range hoods of different sizes and models, increasing the clamping range and enabling range hoods of different sizes and models to remain stable during the smoke exhaust process.

[0039] A test method for an energy efficiency test device of a range hood, including:

[0040] S1: First, place the range hood on the placement rod. The range hood is clamped by the clamping rod on the support frame. After the clamping rod clamps the range hood, the range hood is fixed, ensuring the stability of the range hood during the exhaust process. When the sizes and models of the range hoods are different, placing them on the placement rod will cause extrusion on the clamping rod. The extrusion causes the clamping rod to push the slider to move and compress the spring. The elastic force of the compression spring enables the clamping rod to clamp range hoods of different sizes and models, increasing the clamping range;

[0041] S2: Then, 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 rotation of the metal mesh cylinder intensifies the gravitational effect, making the oil fall more quickly, improving the separation efficiency. At the same time, the rotating shaft drives the partition plate to rotate through the connecting rod. The partition plate drives the scraper to rotate. 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, which may lead to inaccurate oil output and reduce the detection accuracy.

[0042] S3: Subsequently, the rotating shaft rotates to drive the stirring plate to rotate. The stirring plate stirs the activated carbon, improving its activity and the gas flow in the particle detection device, thereby improving the adsorption efficiency and facilitating rapid detection. The inertia generated by the rotation of the stirring plate throws out the telescopic plate. Through the pulling of the tension spring, the telescopic plate reciprocally expands and contracts, improving the turning efficiency of the activated carbon.

[0043] S4: Finally, the gas flows from the first gas pipeline into the air pump. After being compressed by the air pump, it enters the vortex tube through the second gas pipeline. The vortex tube separates the high-pressure gas into cold and hot gases, and then inputs the cold gas into the oil drainage detection chamber to cool the oil in the oil drainage detection chamber, avoiding excessive heat of the oil and making the detection more accurate. The heat in the oil rises upward to push up the piston, and then dissipates. When the heat dissipates, the pressure spring drives the piston to reset and block the heat dissipation pipe orifice to prevent air from entering.

[0044] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0045] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An energy efficiency test device for a range hood, comprising a bottom plate, characterized in that: It further includes a separation device, and the separation device includes a separation structure and a rotation structure; The separation structure includes a separation tank, a steam inlet pipe, a metal mesh cylinder, and a float valve. The separation tank is fixedly connected to the upper surface of the bottom plate. The steam inlet pipe is fixedly connected to the top surface of the separation tank. The metal mesh cylinder is arranged inside the separation tank. The float valve is movably connected to the inner bottom end of the separation tank; The rotation structure includes a rotating shaft, a connecting piece, a partition plate, a connecting rod, and a scraping plate. The rotating shaft rotates through the top end 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 surface of the rotating shaft. The partition plate is fixedly connected to the end of the connecting rod away from the rotating shaft. The scraping plate is fixedly connected to the lower surface of the partition plate; A particle detection device is arranged above the separation tank. 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 end of the separation tank. The particle detection chamber is fixedly connected to the top end of the connecting pipe. The one-way valve is fixedly connected to the bottom surface of the inner wall of the particle detection chamber. 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. The movable end plate is fixedly connected to the outer side surface of the telescopic plate; A cooling device is arranged on the left side surface of the particle detection chamber. The cooling device includes a gas collection structure and a cooling structure. The gas collection structure includes a first gas transmission pipe, a gas pump, a second gas transmission pipe, and a vortex tube. The first gas transmission pipe is fixedly connected to the left outer side surface of the particle detection chamber. The gas pump is fixedly connected to the bottom end of the first gas transmission pipe. The second gas transmission pipe is fixedly connected to the bottom end of the gas pump. The vortex tube is fixedly connected to the right end of the second gas transmission pipe. The cooling structure includes an oil outlet pipe, an oil discharge detection chamber, a cooling wall, a heat dissipation pipe orifice, 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. The heat dissipation pipe orifice is fixedly connected to the top surface of the oil discharge 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 end of the pressure spring. An oil discharge amount detector is arranged inside the oil discharge detection chamber. The vortex tube separates high-pressure gas into cold and hot gases and then inputs the cold gas into the oil discharge detection chamber.

2. The energy efficiency test device for a range hood according to claim 1, characterized in that: The metal mesh cylinder is fixedly connected to the lower surface of the connecting piece. A motor is arranged at the top end of the rotating shaft. The partition plate is movably connected to the inner wall of the separation tank. The scraping plate is slidably connected to the inner wall of the separation tank.

3. The energy efficiency test device for a range hood according to claim 2, characterized in that: The particle detection chamber is fixedly connected to the top surface of the separation tank. The rotating shaft rotates through the top end of the particle detection chamber to the bottom end of the particle detection chamber. The rotating shaft rotates through to the lower part of the isolation net. Activated carbon is placed between the upper part of 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.

4. The energy efficiency test device for a range hood according to claim 3, wherein: The air pump is fixedly connected to the upper surface of the bottom plate. The oil drainage 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 orifice. The oil drainage detection chamber is fixedly connected to the bottom of the separation tank.

5. The energy efficiency test device for a range hood according to claim 4, wherein: A support device is arranged on the right side of the oil drainage detection chamber. The support device includes a support structure and a stability structure. The support structure includes a support frame, a clamping rod, and a placing rod. The support frame is fixedly connected to the upper surface of the bottom plate. The clamping rod is hinged to the inner side of the support frame. The placing rod is fixedly connected to the inner side of the support frame. The stability structure includes a chute, a compression spring, and a slider. The chute is opened on the inner side of the placing rod. One end of the compression spring is fixedly connected to the inner wall of the chute. The slider is fixedly connected to the end of the compression spring away from the separation tank.

6. The energy efficiency test device for a range hood according to claim 5, wherein: The clamping rod is hinged to the top surface of the slider. The slider is slidably connected to the inner side surface of the chute.

7. The test method of an energy efficiency test device for a range hood according to claim 6, characterized in that: Including: S1: First, place the range hood on the placing rod. The range hood is clamped by the clamping rod on the support frame. After the clamping rod clamps the range hood, the range hood is fixed, ensuring the stability of the range hood during the exhaust process. When the sizes and models of the range hoods are different, placing them on the placing rod will cause extrusion on the clamping rod. The extrusion causes the clamping rod to push the slider to move and compress the compression spring. The elastic force of the compression spring causes the clamping rod to clamp range hoods of different sizes and models, increasing the clamping range. S2: Then, the motor drives the rotation of the rotating shaft. The rotating shaft drives the rotation of the connecting piece. The connecting piece drives the rotation of the metal mesh cylinder. The rotation of the metal mesh cylinder intensifies the gravitational effect, making the oil fall more quickly, improving the separation efficiency. At the same time, the rotating shaft drives the rotation of the partition plate through the connecting rod. The partition plate drives the rotation of the scraping plate. The scraping plate scrapes the oil on the inner wall of the bottom of the separation tank, preventing the oil from adhering to the inner wall of the separation tank, which may cause inaccurate oil output and reduce the accuracy of detection. S3: Subsequently, the rotation of the rotating shaft drives the rotation of the stirring plate. The stirring plate stirs the activated carbon, improving its activity and the gas flow in the particle detection device, thus enhancing the adsorption efficiency and facilitating rapid detection. The inertia generated by the rotation of the stirring plate throws out the telescopic plate. The telescopic plate is reciprocally telescoped by the pulling of the tension spring. The telescoping of the telescopic plate improves the turning efficiency of the activated carbon. S4: Finally, the gas flows into the air pump from the first air pipe. After being compressed by the air pump, it enters the vortex tube through the second air pipe. The vortex tube separates the high-pressure gas into cold and hot gases and inputs the cold gas into the oil drainage detection chamber to cool the oil in the oil drainage detection chamber, preventing the oil from having too high a temperature and making the detection more accurate. The heat in the oil dissipates upward and lifts the piston, and then dissipates. When the heat dissipates, the pressure spring drives the piston to reset and block the heat dissipation pipe orifice to prevent air from entering.

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