A fume separator

Abstract

The present application relates to the technical field of kitchen appliances, and in particular to a fume separator, comprising a separation front plate and a separation rear plate; the separation front plate comprises a separation front frame and a plurality of first drainage strips, the first drainage strips are arranged in parallel and at intervals on the separation front frame, so that a first long strip hole is formed on the surface of the separation front plate; the first long strip hole comprises a first section, a second section and a third section connected in sequence, and the width of the first section, the width of the second section and the width of the third section are different; the separation rear plate comprises a separation rear frame and a plurality of second drainage strips, the second drainage strips are arranged in parallel and at intervals on the separation front frame, so that a second long strip hole is formed on the surface of the separation rear plate; the first long strip hole and the second long strip hole are arranged at intervals. The present application adjusts the air inlet speed of the separator by changing the size of the air inlet to disrupt the periodic shedding of the vortex, so that the airflow becomes turbulent, thereby reducing the generation of vibration and noise, and effectively solving the technical problem that the existing fume separator is prone to vibration and noise.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to an oil fume separator. Background Art

[0002] With the awakening of environmental awareness in society, the oil separation index of range hoods has been paid more and more attention, and more and more companies have designed oil fume separators at the front end of range hoods. Existing oil fume separators are usually composed of a separation front plate and a rear plate, and the strip air inlet holes on the separation front plate and the strip air outlet holes on the separation rear plate are evenly arranged in an alternating manner.

[0003] In order to facilitate manufacturing, the existing air inlet is often composed of multiple air inlet holes of the same width. This arrangement makes it easy for the Karman vortex street phenomenon to occur when the wind passes through the separation plate. When the Karman vortex street is alternately shed, it will produce vibration and sound effects. This sound is caused by the sound waves caused by the pressure pulsation in the fluid caused by the periodic shedding of the Karman vortex street. The noise generated is similar to the sound of wind blowing on wires; if the alternating shedding frequency of the vortex street coincides with the acoustic standing wave frequency of the object, resonance will also occur, causing the oil fume separator to produce vibration and noise during operation, thereby affecting the user experience. Summary of the invention

[0004] In view of this, the purpose of this application is to provide an oil fume separator, which effectively solves the technical problem that the existing oil fume separator is prone to vibration and noise. The air inlet speed of the separator is adjusted by changing the size of the air inlet to disrupt the periodic shedding of the vortex, making the airflow turbulent, thereby reducing the generation of vibration and noise.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A fume separator comprises a separation front plate and a separation rear plate; the separation front plate comprises a separation front frame and a plurality of first drainage strips, and the plurality of first drainage strips are arranged in parallel and at intervals on the separation front frame, so that a plurality of first long strip holes are formed on the surface of the separation front plate; the first long strip holes comprise a first section, a second section and a third section connected in sequence, and the width of the first section, the width of the second section and the width of the third section are different from each other; the separation rear plate comprises a separation rear frame and a plurality of second drainage strips, and the plurality of second drainage strips are arranged in parallel and at intervals on the separation front frame, so that a plurality of second long strip holes are formed on the surface of the separation rear plate; the separation front plate is connected to the separation rear plate, and the first long strip holes and the second long strip holes are arranged at intervals.

[0007] Preferably, in the above-mentioned oil fume separator, the lengths of the three sections of the first elongated hole are the same or different.

[0008] Preferably, in the above-mentioned oil fume separator, the width of the first section of the first elongated hole is 6 mm to 10 mm, the width of the second section of the first elongated hole is 6 mm to 10 mm, and the width of the third section of the first elongated hole is 6 mm to 10 mm.

[0009] Preferably, in the above-mentioned oil fume separator, the second elongated hole comprises a fourth section, a fifth section and a sixth section which are connected in sequence, and the widths of the three sections of the second elongated hole are the same or different.

[0010] Preferably, in the above-mentioned oil fume separator, a first drainage groove is provided on the first surface of the first drainage strip, and a second drainage groove is provided on the first surface of the second drainage strip; the separation front plate is connected to the separation rear plate, the opening of the first drainage groove faces the separation rear plate, and the opening of the second drainage groove faces the separation front plate, so that the opening of the second drainage groove is aligned with the first long hole, so that a vortex airflow channel is formed between the first long hole, the second drainage groove, and the first drainage groove and the second long hole.

[0011] Preferably, in the above-mentioned oil fume separator, the second drainage strip is in an arc shape.

[0012] Preferably, the above-mentioned oil fume separator further includes a wind shield; the separation front plate is connected to the separation rear plate, and the wind shield is used to partially block the oil fume entering the second elongated hole from the first elongated hole.

[0013] Preferably, in the above-mentioned oil fume separator, the wind shield is installed on the separation front plate; the separation front plate is connected to the separation rear plate, the first surface of the wind shield is connected to the first drain strip, and the second surface of the wind shield is in contact with and abuts against the second drain strip.

[0014] Preferably, in the above-mentioned oil fume separator, each of the wind shields is provided with a protrusion extending along the opening direction of the first drainage groove; the separation front plate is connected to the separation rear plate, and the two protrusions on both sides of the second drainage strip along the width direction form a clamping space that contacts and abuts against the second drainage strip.

[0015] Preferably, in the above-mentioned oil fume separator, the wind shield is installed on the separation rear plate; the separation front plate is connected to the separation rear plate, the first surface of the wind shield is connected to the second drain strip, and the second surface of the wind shield is in contact with and abuts against the first drain strip.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] A fume separator provided in the present application includes a separation front plate and a separation rear plate; the separation front plate includes a separation front frame and a plurality of first drainage strips, and the plurality of first drainage strips are arranged in parallel and at intervals on the separation front frame, so that a plurality of first long strip holes are formed on the surface of the separation front plate; the first long strip holes include a first section, a second section and a third section connected in sequence, and the width of the first section, the width of the second section and the width of the third section are different; the separation rear plate includes a separation rear frame and a plurality of second drainage strips, and the plurality of second drainage strips are arranged in parallel and at intervals on the separation front frame, so that a plurality of second long strip holes are formed on the surface of the separation rear plate; the separation front plate is connected to the separation rear plate, and the first long strip holes and the second long strip holes are arranged at intervals. The present application arranges the strip air inlet hole (that is, the first long strip hole) of the separator to consist of three sections with different widths. Compared with the traditional separator which uses strip air inlet holes of the same width, the present application can change the air inlet speed of the three sections of the strip air inlet hole of the oil fume separator, so that the air inlet speeds of the three sections of the strip air inlet hole are different, and the air inlet flow rates of the three sections of the strip air inlet hole are also different. After the oil fume airflow enters the oil fume separator, the oil fume airflow will flow from the point with large flow rate to the point with small flow rate, which can disrupt the periodic shedding of the vortex, and make the ordered airflow inside the oil fume separator become disordered turbulent flow. When the oil fume separator is working, vibration between the separation front plate and the separation rear plate can be avoided, and the noise generation can be reduced, thereby ensuring that the user has a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0019] Figure 1 A rear view of a separated front plate provided in an embodiment of the present application;

[0020] Figure 2 A cross-sectional view of a separated front plate along the AA direction provided in an embodiment of the present application;

[0021] Figure 3 A cross-sectional view of a separated front plate along the BB direction provided in an embodiment of the present application;

[0022] Figure 4 A front view of a separated front plate provided in an embodiment of the present application;

[0023] Figure 5 A rear view of a separated rear plate provided in an embodiment of the present application;

[0024] Figure 6 A top view of a separated rear plate provided in an embodiment of the present application;

[0025] Figure 7 A rear view of an oil fume separator provided in an embodiment of the present application;

[0026] Figure 8 A cross-sectional view of an oil fume separator provided in an embodiment of the present application along the CC direction;

[0027] Fig. 9 A cross-sectional view of an oil fume separator provided in an embodiment of the present application along the DD direction;

[0028] Fig.10 Provided in the embodiments of this application Fig. 9 A magnified image of

[0029] Fig.11 It is a schematic diagram of the structure of the air inlet hole of a traditional oil fume separator;

[0030] Fig.12 This is a comparison diagram of the inlet and outlet airflow of a traditional oil fume separator;

[0031] Fig.13 A comparison diagram of the inlet and outlet airflows of an oil fume separator provided in an embodiment of the present application;

[0032] Fig.14 The figure is a distribution diagram of the internal airflow of a traditional oil fume separator;

[0033] Fig.15 A distribution diagram of internal airflow of an oil fume separator provided in an embodiment of the present application;

[0034] Fig.16 A schematic diagram of the structure of the first type of first elongated hole provided in an embodiment of the present application;

[0035] Fig.17 A schematic diagram of the structure of the second first elongated hole provided in an embodiment of the present application;

[0036] Fig.18 A schematic diagram of the structure of the third first elongated hole provided in an embodiment of the present application;

[0037] Fig.19 A schematic structural diagram of the fourth type of first elongated hole provided in an embodiment of the present application.

[0038] In the figure:

[0039] 1 is the separation front plate, 11 is the first drainage strip, 12 is the separation front frame, 13 is the first long hole, 131 is the first section, 132 is the second section, 133 is the third section, 14 is the first drainage groove, 2 is the separation rear plate, 21 is the second drainage strip, 22 is the separation rear frame, 23 is the second long hole, 24 is the second drainage groove, 3 is the wind shield, 31 is the protrusion, and 32 is the clamping space. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0043] With the awakening of social environmental awareness, the oil separation index of range hoods has received more and more attention, and more and more companies have designed oil fume separators at the front end of range hoods. Existing oil fume separators are usually composed of a separation front plate and a rear plate. The strip air inlet holes on the separation front plate and the strip air outlet holes on the separation rear plate are evenly arranged in an alternating manner. In order to facilitate manufacturing, Fig.11, the existing air inlet is often composed of multiple air inlet holes of the same width. This arrangement makes it easy for the Karman vortex street phenomenon to occur when the wind passes through the separation plate. When the Karman vortex street is alternately shed, it will generate vibration and emit a sound effect. This sound is caused by the sound waves caused by the pressure pulsation in the fluid caused by the periodic shedding of the Karman vortex street. The noise generated is similar to the sound of wind blowing through wires; if the alternating shedding frequency of the vortex street coincides with the acoustic standing wave frequency of the object, resonance will also occur, causing the oil fume separator to generate vibration and noise during operation, thereby affecting the user experience. The present application provides an oil fume separator, which adjusts the air inlet speed of the separator by changing the size of the air inlet, so as to disrupt the periodic shedding of the vortex, turn the airflow into turbulent flow, thereby reducing the generation of vibration and noise, and effectively solving the technical problem that the existing oil fume separator is prone to vibration and noise.

[0044] Please refer to Figure 1-Figure 10 The present application provides an oil fume separator, comprising a separation front plate 1 and a separation rear plate 2; the separation front plate 1 comprises a separation front frame 12 and a plurality of first drainage strips 11, the plurality of first drainage strips 11 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of first long strip holes 13 are formed on the surface of the separation front plate 1; the first long strip holes 13 comprise a first section 131, a second section 132 and a third section 133 connected in sequence, the width of the first section 131, the width of the second section 132 and the width of the third section 133 are different; the separation rear plate 2 comprises a separation rear frame 22 and a plurality of second drainage strips 21, the plurality of second drainage strips 21 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of second long strip holes 23 are formed on the surface of the separation rear plate 2; the separation front plate 1 is connected to the separation rear plate 2, and the first long strip holes 13 and the second long strip holes 23 are arranged in intervals.

[0045] In addition to dividing the first long hole 13 serving as the air inlet into three sections, the present application can also divide the first long hole 13 serving as the air inlet into two sections, four sections, five sections, six sections, etc., wherein the widths of more than two sections are set to be different, which can also play the effect of reducing the generation of vibration and noise; the present application mainly describes the case of dividing the first long hole 13 serving as the air inlet into three sections, and other cases will not be described in detail in this application.

[0046] More specifically, see Figure 1 , Figure 1 The dimension in the direction marked E in the figure is the width of the first elongated hole 13, and the width of the first elongated hole 13 described in this application is based on the premise of ignoring the semicircular arc segments at both ends of the first elongated hole 13 along the length direction; please refer to Figure 1 and Figure 4 , Figure 1 and Figure 4The dotted line of the first first long hole 13 on the left side does not actually exist. The dotted line is added to facilitate observation of the width changes of the three sections of the first long hole 13. Figure 1 The width of the first elongated hole 13 in the structure gradually decreases from top to bottom, so that the width of the first section 131, the width of the second section 132 and the width of the third section 133 are different.

[0047] The present application arranges the strip air inlet hole (that is, the first long strip hole 13) of the separator to consist of three sections with different widths. Compared with the traditional separator that uses strip air inlet holes of the same width, the present application can change the air inlet speed of the three sections of the strip air inlet hole of the oil fume separator, so that the air inlet speeds of the three sections of the strip air inlet hole are different, and the air inlet flow rates of the three sections of the strip air inlet hole are also different. After the oil fume airflow enters the oil fume separator, the oil fume airflow will flow from the point with large flow rate to the point with small flow rate, which can disrupt the periodic shedding of the vortex, and make the ordered airflow inside the oil fume separator become disordered turbulent flow. When the oil fume separator is working, vibration between the separation front plate 1 and the separation rear plate 2 can be avoided, and the noise generation can be reduced, thereby ensuring that the user has a good use experience.

[0048] Further, in this application, please refer to Figure 1-Figure 10 A first drainage groove 14 is provided on the first surface of the first drainage strip 11, and a second drainage groove 24 is provided on the first surface of the second drainage strip 21; the separation front plate 1 is connected to the separation rear plate 2, the opening of the first drainage groove 14 faces the separation rear plate 2, and the opening of the second drainage groove 24 faces the separation front plate 1, so that the opening of the second drainage groove 24 is aligned with the first long hole 13, so that a vortex airflow channel is formed between the first long hole 13, the second drainage groove 24, and the first drainage groove 14 and the second long hole 23.

[0049] The separation front plate 1 and the separation rear plate 2 form a multiple vortex airflow channel through the first long hole 13, the second drainage groove 24, the first drainage groove 14 and the second long hole 23. When the range hood is working, the range hood draws the oil smoke in the kitchen into the oil smoke separator. Under the guidance of the first drainage groove 14 and the second drainage groove 24, the oil smoke can pass through the tortuous multiple vortex channels at high speed and collide and condense in the channels, thereby playing a good blocking role for grease and floating dust particles. The blocked water gas, grease and floating dust particles will gather into oil droplets (containing oil, water and other particulate matter) on the surface of the channel and gradually settle to the bottom of the separator, and the separated gas is discharged into the volute to realize oil smoke separation, which has the advantages of high grease separation degree and good grease separation effect.

[0050] More specifically, the separation front plate 1 and the separation rear plate 2 are detachably connected. The separation front plate 1 and the separation rear plate 2 can be detachably connected by means of clamping, bolts, etc. After the separator has been working for a long time, a lot of grease and floating dust particles will accumulate between the separation front plate 1 and the separation rear plate 2. The accumulation of grease and floating dust particles will greatly reduce the separation efficiency of the separator. In order to clean up these grease and floating dust particles in time, the separation front plate 1 and the separation rear plate 2 need to be detachably connected. Please refer to Figure 2 , Figure 3 , Figure 6 , Figure 8 and Fig. 9 In the present application, the separation rear plate 2 is inserted into the separation front plate 1. When cleaning is required, the separation rear plate 2 only needs to be pulled out from the separation front plate 1, which makes it convenient for the staff to clean the inside of the separator.

[0051] Furthermore, in the present application, the second drain bar 21 is in an arc shape. The arc-shaped second drain bar 21 can reduce the processing material of the second drain bar 21 and save material cost, and can also make it easier for the two sides of the second drain bar 21 to extend into the first drain groove 14 without affecting the normal flow of gas due to the excessive width of the side.

[0052] Furthermore, in the present application, the second elongated hole 23 includes a fourth section, a fifth section, and a sixth section connected in sequence, and the widths of the three sections of the second elongated hole 23 are the same or different. Since the first elongated hole 13 as the air inlet has been configured to consist of three sections with different widths, the flow velocity of the internal airflow of the entire oil fume separator can be changed, and therefore the widths of the three sections of the second elongated hole 23 as the air outlet can be the same or different. Of course, when the first elongated hole 13 as the air inlet and the second elongated hole 23 as the air outlet are both configured to consist of three sections with different widths, this can have a better disturbing effect on the internal airflow of the oil fume separator, making it less likely to form a vortex.

[0053] Furthermore, in the present application, the lengths of the three sections of the first elongated hole 13 are the same or different. Since the widths of the three sections of the first elongated hole 13 are different, the air intake speed of the three sections has been changed, so the lengths of the first section 131, the second section 132, and the third section 133 can be set equal or in different proportions. Of course, the distribution of the three sections with different lengths will also change the air intake speed of the three sections of the first elongated hole 13, and the specific lengths of the three sections can be designed according to specific actual needs.

[0054] Further, in the present application, the width of the first section 131 of the first elongated hole 13 is 6 mm to 10 mm, the width of the second section 132 of the first elongated hole 13 is 6 mm to 10 mm, and the width of the third section 133 of the first elongated hole 13 is 6 mm to 10 mm. In order to ensure the oil fume separator's blocking effect on grease while also ensuring the air intake effect of the oil fume separator, the width of the first elongated hole 13 cannot be too large. If it is too large, the oil fume will easily pass through the oil fume separator, thereby reducing the oil fume separator's blocking effect on the oil fume. If it is too small, it will limit the speed at which the oil fume enters the oil fume separator, making it difficult for the oil fume to be quickly discharged from the kitchen, affecting the user's experience. Therefore, it is necessary to limit the width of the first elongated hole 13. In the present application, the width of the first elongated hole 13 is most preferably 6 mm to 10 mm. Of course, the first elongated hole 13 can also be other widths. The width of the first elongated hole 13 can be designed according to specific actual needs.

[0055] Further, in this application, please refer to Figure 7 , and also includes a windshield 3, which can be installed on the separation front plate 1 or on the separation rear plate 2; the separation front plate 1 is connected to the separation rear plate 2, and the windshield 3 is used to partially block the oil smoke entering the second elongated hole 23 from the first elongated hole 13. The windshield 3 is mainly arranged at the air inlet (that is, the first elongated hole 13), which can play the role of closing part of the air inlet, thereby changing the air inlet speed at the air inlet. Under the setting of different widths, the periodic shedding of the vortex can be further disrupted, and the natural frequency of the separation front plate 1 can be changed, so that the vortex shedding frequency is completely unequal to the natural frequency of the tube, thereby reducing the vibration between the separation front plate 1 and the separation rear plate 2, reducing the generation of noise, and ensuring that the user has a good use experience.

[0056] More specifically, see Figure 1 The wind shield 3 can be provided with two rows, and the two rows of wind shields 3 can be respectively arranged in the middle of the second section 132 and the position of the third section 133 close to the second section 132, so that the air intake speed of the second section 132 and the third section 133 can be changed; of course, the specific position and number of the wind shield 3 are designed according to actual needs.

[0057] Further, in this application, please refer to Figure 3 , Fig. 9 and Fig.10The windshield 3 is installed on the separation front plate 1; when the separation front plate 1 is connected to the separation rear plate 2, the first surface of the windshield 3 is connected to the first drainage strip 11, and the second surface of the windshield 3 is in contact with and against the second drainage strip 21. The windshield 3 is in contact with and against the second drainage strip 21, thereby preventing the oil smoke from entering the first drainage groove 14 from the second drainage groove 24, thereby changing the ventilation speed inside the oil smoke separator, disrupting the periodic shedding of the vortex, and reducing the generation of vibration and noise.

[0058] Further, in this application, please refer to Figure 3 , Fig. 9 and Fig.10 Each wind shield 3 is provided with a protrusion 31 extending along the opening direction of the first drainage groove 14; the separation front plate 1 is connected to the separation rear plate 2, and the two protrusions 31 on both sides of the second drainage strip 21 along the width direction form a clamping space 32 that contacts and abuts against the second drainage strip 21. Figure 3 The area indicated by the double-headed arrow 32 in the mark is the clamping space 32 formed by the two protrusions 31. The setting of the protrusions 31 can limit the left and right movement of the second guide strip 21, which can facilitate the separation of the rear plate 2 and plug it into the separation front plate 1, and avoid the second guide strip 21 shaking left and right and touching the wind shield 3 to generate noise.

[0059] Furthermore, in the present application, the windshield 3 can also be installed on the separation rear plate 2; when the separation front plate 1 is connected to the separation rear plate 2, the first surface of the windshield 3 is connected to the second drainage strip 21, and the second surface of the windshield 3 is in contact with and abuts against the first drainage strip 11. The windshield 3 installed on the separation rear plate 2 can also play the role of blocking part of the oil smoke from entering the second long strip hole 23 from the first long strip hole 13.

[0060] In the present application, the oil fume separator (such as Fig.11 ) and oil fume separators with strip air inlets of different widths (such as Figure 4 ) to conduct experiments, in which Fig.11 The width of the first long hole is 8cm, Figure 4 The maximum width of the first section 131 of the first long hole is 9 cm, the middle width of the second section 132 is 8 cm, and the minimum width of the third section 133 is 7 cm, that is, the width of the first long hole gradually decreases from 9 cm to 7 cm, and then it is concluded that Figure 12-Figure 15 The airflow distribution diagram and the noise record table in Table 1, and the following conclusions were found from these pictures and tables;

[0061] (1) Fig.12 and Fig.13 For comparison. Fig.12 This is a comparison of the inlet and outlet airflow of a traditional oil fume separator. Fig.12a is the distribution diagram of the airflow before entering the traditional oil fume separator. Fig.12 b is the distribution diagram of the airflow after passing through the traditional oil fume separator; Fig.13 Comparison diagram of the inlet and outlet airflow of the oil fume separator with strip air inlet holes of different widths provided for this application, on the left Fig.13 a is the distribution diagram of the airflow before entering the improved oil fume separator. Fig.13 b is the distribution diagram of the airflow after passing through the improved oil fume separator;

[0062] from Fig.12 From the air inlet on the left to the air outlet on the right, it can be seen that when the traditional oil fume separator extracts oil fume, although the movement of oil fume is changed, the airflow through the oil fume separator is still relatively regular;

[0063] And from Fig.13 From the air inlet on the left to the air outlet on the right, especially Fig.13 At the arrows, it can be seen that the airflow of the oil fume separator through the strip air inlet holes of different widths becomes obviously more turbulent;

[0064] It can be seen that compared with the oil fume separator using strip air inlet holes of the same width, the oil fume separator using strip air inlet holes of different widths has a better effect of disrupting the airflow.

[0065] (2) Fig.14 and Fig.15 For comparison. Fig.14 The distribution diagram of the internal airflow of the oil fume separator using strip air inlet holes of the same width. Fig.15 The figure is a distribution diagram of the internal airflow of the oil fume separator using strip-shaped air inlet holes of different widths;

[0066] from Fig.14 As indicated by the arrow in the figure, it can be seen that the internal airflow through the oil fume separator generates a vortex at the first drainage strip 11, and forms a pair of complete reverse vortices on both sides of the first drainage groove 14;

[0067] from Fig.15 As indicated by the two short arrows in the figure, it can be seen that the internal airflow of the oil fume separator with strip air inlet holes of different widths does not form an obvious and complete vortex at the first guide strip 11; and the turbulent airflow from the neat air inlet (indicated by the long arrow) to the air outlet once again verifies that changing the width of the strip air inlet hole can bring about a good effect of disturbing the airflow;

[0068] It can be seen that compared with the oil fume separator using strip air inlet holes of the same width, the oil fume separator using strip air inlet holes of different widths is not easy to form a complete vortex at the separation rear plate 2.

[0069] (3) Compare the data in Table 1. Since the exhaust speed of commonly used range hoods is 1.5m / s-2.5m / s, the wind speed within this range is used as the inlet speed for the test. The following is the noise record table of three types of oil fume separators at different speeds: Table 1:

[0070] Table 1

[0071]

[0072] It can be seen that when the oil fume separator using strip air inlet holes of different widths is working, the noise generated by vibration can be clearly heard when the air inlet speed is 1.6m / s-2.1m / s, and the noise reaches a maximum when the air inlet speed is 1.9m / s, while when the oil fume separator using strip air inlet holes of different widths is working, only very small noise is generated when the air inlet speed is 2.1m / s, and basically no noise is generated; in addition, after the wind shield 3 is added to the oil fume separator using strip air inlet holes of different widths, no noise is generated when the air inlet speed is 2.1m / s.

[0073] In summary (1)(2)(3), it is concluded that: compared with the oil fume separator using the strip air inlet holes of the same width, the oil fume separator using the strip air inlet holes of different widths has a better effect of disturbing the airflow, and is not easy to form a complete vortex at the separation rear plate 2, and is not easy to generate vibration caused by vortex shedding, and is not easy to generate noise. In particular, after the wind shield 3 is added to the oil fume separator using the strip air inlet holes of different widths, the effect of eliminating noise is the best.

[0074] Example 1

[0075] See also Fig.16 The present application provides a first embodiment, which includes a separation front plate 1 and a separation rear plate 2; the separation front plate 1 includes a separation front frame 12 and a plurality of first drain strips 11, and the plurality of first drain strips 11 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of first long strip holes 13 are formed on the surface of the separation front plate 1; the first long strip holes 13 include a first section 131, a second section 132 and a third section 133 connected in sequence, and the width of the first section 131, the width of the second section 132 and the width of the third section 133 decrease in sequence; the separation rear plate 2 includes a separation rear frame 22 and a plurality of second drain strips 21, and the plurality of second drain strips 21 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of second long strip holes 23 are formed on the surface of the separation rear plate 2; the separation front plate 1 is connected to the separation rear plate 2, and the first long strip holes 13 and the second long strip holes 23 are arranged in intervals.

[0076] There are four situations: (1) Fig.16 As shown in FIG. 1 , the width from the first section 131 to the third section 133 may be gradually reduced in a straight line. Figure 1This method is also used; (2) Fig.16 As shown in b, the width from the first section 131 to the third section 133 may also be gradually reduced in a curved manner; (3) as Fig.16 As shown in FIG. 3 , the width from the first section 131 to the second section 132 and the width from the second section 132 to the third section 133 can be reduced in sequence using different ratios; (4) Fig.16 As shown in FIG. d, the width from the first section 131 to the second section 132 and the width from the second section 132 to the third section 133 can be reduced in stages.

[0077] The above four situations can change the air intake speed of the three sections of the strip air inlet holes of the oil fume separator, so that the air intake speed of the three sections of the strip air inlet holes is different, and the air intake flow rate of the three sections of the strip air inlet holes is also different, which can disrupt the periodic shedding of the vortex, and make the orderly airflow inside the oil fume separator become disordered turbulent flow. When the oil fume separator is working, it can avoid vibration between the separation front plate 1 and the separation rear plate 2, reduce the generation of noise, and ensure that users have a good use experience.

[0078] Example 2

[0079] See also Fig.17 The present application provides a second embodiment, which includes a separation front plate 1 and a separation rear plate 2; the separation front plate 1 includes a separation front frame 12 and a plurality of first drain strips 11, and the plurality of first drain strips 11 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of first long strip holes 13 are formed on the surface of the separation front plate 1; the first long strip holes 13 include a first section 131, a second section 132 and a third section 133 connected in sequence, and the width of the first section 131, the width of the second section 132 and the width of the third section 133 increase in sequence; the separation rear plate 2 includes a separation rear frame 22 and a plurality of second drain strips 21, and the plurality of second drain strips 21 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of second long strip holes 23 are formed on the surface of the separation rear plate 2; the separation front plate 1 is connected to the separation rear plate 2, and the first long strip holes 13 and the second long strip holes 23 are arranged in intervals.

[0080] There are four situations: (1) Fig.17 As shown in FIG. 1 , the width from the first section 131 to the third section 133 may be gradually increased in a straight line; (2) as shown in FIG. Fig.17 As shown in FIG. 1B , the width from the first section 131 to the third section 133 may also be gradually increased in a curved manner; (3) as shown in FIG. Fig.17 As shown in FIG. 3 , the width from the first section 131 to the second section 132 and the width from the second section 132 to the third section 133 can be increased in sequence using different ratios; (4) Fig.17As shown in FIG. d, the width from the first section 131 to the second section 132 and the width from the second section 132 to the third section 133 can be increased in a staged manner.

[0081] The above four situations can change the air intake speed of the three sections of the strip air inlet holes of the oil fume separator, so that the air intake speed of the three sections of the strip air inlet holes is different, and the air intake flow rate of the three sections of the strip air inlet holes is also different, which can disrupt the periodic shedding of the vortex, and make the orderly airflow inside the oil fume separator become disordered turbulent flow. When the oil fume separator is working, it can avoid vibration between the separation front plate 1 and the separation rear plate 2, reduce the generation of noise, and ensure that users have a good use experience.

[0082] Example 3

[0083] See also Fig.18 The present application provides a third embodiment, which includes a separation front plate 1 and a separation rear plate 2; the separation front plate 1 includes a separation front frame 12 and a plurality of first drain strips 11, and the plurality of first drain strips 11 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of first long strip holes 13 are formed on the surface of the separation front plate 1; the first long strip holes 13 include a first section 131, a second section 132 and a third section 133 connected in sequence, and the width of the first section 131 and the width of the third section 133 are greater than the width of the second section 132; the separation rear plate 2 includes a separation rear frame 22 and a plurality of second drain strips 21, and the plurality of second drain strips 21 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of second long strip holes 23 are formed on the surface of the separation rear plate 2; the separation front plate 1 is connected to the separation rear plate 2, and the first long strip holes 13 and the second long strip holes 23 are arranged at intervals.

[0084] There are three situations: (1) Fig.18 As shown in FIG. 1 , the width from the first section 131 to the second section 132 and the width from the third section 133 to the second section 132 may be gradually reduced in a straight line; (2) as shown in FIG. Fig.18 As shown in FIG. 1 , the width from the first section 131 to the second section 132 and the width from the third section 133 to the second section 132 may be gradually reduced in a curved manner; (3) as shown in FIG. Fig.18 As shown in c, the width from the first section 131 to the second section 132 and the width from the third section 133 to the second section 132 can be reduced in a staged manner.

[0085] The above three situations can change the air intake speed of the three sections of the strip air inlet holes of the oil fume separator, so that the air intake speed of the three sections of the strip air inlet holes is different, and the air intake flow rate of the three sections of the strip air inlet holes is also different, which can disrupt the periodic shedding of the vortex, and make the orderly airflow inside the oil fume separator become disordered turbulent flow. When the oil fume separator is working, it can avoid vibration between the separation front plate 1 and the separation rear plate 2, reduce the generation of noise, and ensure that the user has a good use experience.

[0086] Example 4

[0087] See also Fig.19 The present application provides a fourth embodiment, which includes a separation front plate 1 and a separation rear plate 2; the separation front plate 1 includes a separation front frame 12 and a plurality of first drain strips 11, and the plurality of first drain strips 11 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of first long strip holes 13 are formed on the surface of the separation front plate 1; the first long strip holes 13 include a first section 131, a second section 132 and a third section 133 connected in sequence, and the width of the first section 131 and the width of the third section 133 are greater than the width of the second section 132; the separation rear plate 2 includes a separation rear frame 22 and a plurality of second drain strips 21, and the plurality of second drain strips 21 are arranged in parallel and at intervals on the separation front frame 12, so that a plurality of second long strip holes 23 are formed on the surface of the separation rear plate 2; the separation front plate 1 is connected to the separation rear plate 2, and the first long strip holes 13 and the second long strip holes 23 are arranged at intervals.

[0088] There are three situations: (1) Fig.19 As shown in FIG. 1 , the width from the first section 131 to the second section 132 and the width from the third section 133 to the second section 132 may gradually increase in a straight line; (2) as shown in FIG. Fig.19 As shown in FIG. 2 , the width from the first section 131 to the second section 132 and the width from the third section 133 to the second section 132 may be gradually increased in a curved manner; (3) as shown in FIG. Fig.19 As shown in c, the width from the first section 131 to the second section 132 and the width from the third section 133 to the second section 132 can be increased in a staged manner.

[0089] The above three situations can change the air intake speed of the three sections of the strip air inlet holes of the oil fume separator, so that the air intake speed of the three sections of the strip air inlet holes is different, and the air intake flow rate of the three sections of the strip air inlet holes is also different, which can disrupt the periodic shedding of the vortex, and make the orderly airflow inside the oil fume separator become disordered turbulent flow. When the oil fume separator is working, it can avoid vibration between the separation front plate 1 and the separation rear plate 2, reduce the generation of noise, and ensure that the user has a good use experience.

[0090] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0091] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fume separator, characterized in that: including a separation front plate and a separation rear plate; The separation front plate comprises a separation front frame and a plurality of first drainage strips, wherein the plurality of first drainage strips are arranged in parallel and at intervals on the separation front frame, so that a plurality of first long strip holes are formed on the surface of the separation front plate; The first long strip hole comprises a first section, a second section and a third section which are connected in sequence, and the width of the first section, the width of the second section and the width of the third section are different from each other; The separation rear plate comprises a separation rear frame and a plurality of second guide strips, wherein the plurality of second guide strips are arranged in parallel and at intervals on the separation front frame, so that a plurality of second long strip holes are formed on the surface of the separation rear plate; The separation front plate is connected to the separation rear plate, and the first long strip hole and the second long strip hole are arranged at intervals; The three sections of the first elongated hole have the same or different lengths; The width of the first section of the first elongated hole is 6 mm to 10 mm, the width of the second section of the first elongated hole is 6 mm to 10 mm, and the width of the third section of the first elongated hole is 6 mm to 10 mm.

2. The oil fume separator according to claim 1, characterized in that: The second elongated hole comprises a fourth section, a fifth section and a sixth section which are connected in sequence, and the widths of the three sections of the second elongated hole are the same or different.

3. The oil fume separator according to claim 1, characterized in that: A first drainage groove is provided on the first surface of the first drainage strip, and a second drainage groove is provided on the first surface of the second drainage strip; The opening of the first drainage groove faces the separation rear plate, and the opening of the second drainage groove faces the separation front plate, so that the opening of the second drainage groove is aligned with the first long hole, so that a vortex airflow channel is formed between the first long hole, the second drainage groove, and the first drainage groove and the second long hole.

4. The oil fume separator according to claim 3, characterized in that: The second drainage strip is in an arc shape.

5. The oil fume separator according to any one of claims 1 to 4, characterized in that: Also includes windshield; The wind shield is used to partially block the oil smoke entering the second elongated hole from the first elongated hole.

6. The oil fume separator according to claim 5, characterized in that: The wind shield is mounted on the separation front plate; The first surface of the wind shield is connected to the first guide strip, and the second surface of the wind shield is in contact with and abuts against the second guide strip.

7. The oil fume separator according to claim 5, characterized in that: The wind shield is mounted on the separation rear plate; The first surface of the wind shield is connected to the second guide strip, and the second surface of the wind shield is in contact with and abuts against the first guide strip.

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