Wind formation demonstrator

Abstract

The utility model belongs to the technical field of teaching instruments, and particularly relates to a wind formation demonstrator, which comprises a bottom plate, a combustion chamber arranged on the bottom plate, a gap between the combustion chamber and the bottom plate, a placing table arranged in the combustion chamber and used for placing a candle, and an air inlet arranged on the side wall of the combustion chamber. An air inlet is formed in one side wall of the combustion chamber and communicated with the air inlet pipeline through a detachable connecting structure, an air outlet is formed in the fixed wall of the combustion chamber and communicated with the air outlet pipeline through a detachable connecting structure, fans are connected in the air inlet pipeline and the air outlet pipeline, and the other side wall of the combustion chamber is provided with an opening and detachably covered with a cover plate. The combustion chamber, the air inlet pipeline and the air outlet pipeline are all made of plastic transparent materials. The air inlet pipeline and the air outlet pipeline are both detachably connected with the combustion chamber, so that space can be saved during storage.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching instruments, in particular to a wind formation demonstrator. Background Art

[0002] Wind is a natural phenomenon caused by air flow. The formation of wind is involved in the teaching of geography and physics in primary and secondary schools. However, since wind is a natural phenomenon, it is difficult to use actual effects to make students fully understand this natural phenomenon; therefore, there are wind formation demonstration instruments for teaching. For example, the wind formation demonstrator with patent number CN202258046U includes a bottom plate, a hot air box is placed on the bottom plate, an air outlet pipe connected to the inner cavity of the hot air box is provided at the upper end of the hot air box, a burner is placed on the bottom plate in the hot inner box, an air inlet is provided on the right side plate of the hot air box, and a smoke generator is provided on the bottom plate corresponding to the air inlet. The hot air box is a transparent hot air box, and the air outlet pipe is a transparent air outlet pipe.

[0003] However, in the existing wind formation demonstrator, the air outlet pipe is fixedly connected to the hot air box, which takes up a lot of space when stored. Therefore, we make improvements on this and propose a wind formation demonstrator for teaching. Utility Model Content

[0004] The purpose of the utility model is to provide a wind formation demonstrator to solve the above-mentioned technical problems, so as to achieve the effect of saving space when stored.

[0005] In view of this, the utility model provides a wind formation demonstrator, including a base plate, a combustion chamber is arranged on the base plate, a gap is provided between the combustion chamber and the base plate, a placing table for placing candles is arranged in the combustion chamber, an air inlet is arranged on the side wall of the combustion chamber, the air inlet is connected to the air inlet duct through a detachable connecting structure, an air outlet is arranged on the fixed wall of the combustion chamber, the air outlet is connected to the air outlet duct through a detachable connecting structure, fans are connected to the air inlet duct and the air outlet duct, the other side wall of the combustion chamber is open and is detachably covered with a cover plate, and the combustion chamber, the air inlet duct and the air outlet duct are all made of transparent plastic material.

[0006] In this technical solution, the cover is opened, and after the candle is lit, the cover is closed. The air in the combustion chamber is heated and rises, and flows out from the air outlet, causing the air in the combustion chamber to become thinner and the pressure to decrease. At the same time, the temperature outside the combustion chamber does not change, so the pressure is higher than that in the combustion chamber. Since the pressure outside the combustion chamber is greater than the pressure inside the combustion chamber, the cold air outside the combustion chamber flows into the combustion chamber along the air inlet duct. The air in the combustion chamber is heated and continuously rises and flows out, while the air outside the combustion chamber continuously flows into the combustion chamber, thus forming a stream of air flowing from outside the combustion chamber to the combustion chamber. The flow of air forms wind, and the wind causes the fan to rotate, so that the formation process of the wind can be observed with the naked eye. The air inlet duct and the air outlet duct are both detachably connected to the combustion chamber, which can save space when stored.

[0007] Furthermore, the detachable connection structure includes:

[0008] The flange is annular and extends outward from the side walls of the air inlet and the air outlet of the combustion chamber, and the outer diameter of the flange matches the inner diameter of the air outlet duct and the air inlet duct;

[0009] Magnets are arranged inside the flange, inside the air outlet duct and inside the air inlet duct, so as to keep the mutually sleeved relationship between the air outlet duct and the flange, and between the air inlet duct and the flange stable.

[0010] In this technical solution, the air outlet duct only needs to be put on the flange and adsorbed by the magnet, which makes disassembly and assembly simple.

[0011] Furthermore, the axes of the air outlet duct and the air inlet duct are perpendicular to each other, the axis of the fan in the air outlet duct is in the same straight line as the axis of the air outlet duct, and the axis of the fan in the air inlet duct is perpendicular to the axis of the air inlet duct.

[0012] Furthermore, a streamer is provided at the air inlet in the combustion chamber.

[0013] In this technical solution, after the wind is formed, the streamer will float to the side away from the air inlet. By setting the streamer together with the two fans, the path of the wind can be seen more intuitively.

[0014] Furthermore, the streamer is provided with a position adjustment structure.

[0015] In this technical solution, the distance between the ribbon, the candle and the air inlet can be adjusted as needed, which is more flexible.

[0016] Furthermore, the position adjustment structure includes a slide rail and a slider, the top of the slide rail is connected to the top wall of the combustion chamber, the slider is slidably arranged on the slide rail, the slide rail is parallel to the air inlet duct and one end thereof extends to the side wall opening.

[0017] In the present technical solution, when the distance between the streamer, the candle and the air inlet needs to be adjusted, the slider is moved to slide on the slide rail until the streamer is adjusted to a suitable position. One end of the slide rail extends to the opening of the side wall, and the slider can be moved out of the opening, so that the streamer can be removed.

[0018] Furthermore, a bell is connected to the blades of the fan.

[0019] In this technical solution, when wind is generated, the fan rotates to move the bell, so that the bell produces a sound, and the generation of wind can be felt auditorily, making teaching more interesting.

[0020] Furthermore, magnets are provided inside the cover plate and inside the side walls of the combustion chamber opening.

[0021] In the technical solution, the magnet can make the cover plate cover the side of the combustion chamber more stably and reliably.

[0022] The beneficial effects of the utility model are:

[0023] 1. The air inlet duct and the air outlet duct are both detachably connected to the combustion chamber, which can save space when stored.

[0024] 2. Simply put the air outlet duct on the flange and let the magnet absorb it. It is easy to assemble and disassemble.

[0025] 3. After the wind is formed, the streamer will float to the side away from the air inlet. By setting up the streamer, you can see the wind path more intuitively together with the two fans.

[0026] 4. When wind is generated, the fan rotates to move the bell, so that the bell produces sound. You can feel the generation of wind through hearing, making teaching more interesting. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the utility model;

[0028] Figure 2 yes Figure 1 A partial enlarged view of

[0029] Figure 3 yes Figure 1 A partial enlarged view of

[0030] Figure 4 yes Figure 1 A partial enlarged view of

[0031] Figure 5 It is a top view of the utility model;

[0032] The symbols in the figure are:

[0033] 1. Base plate; 2. Combustion chamber; 3. Placement table; 4. Air inlet; 5. Air inlet duct; 6. Air outlet; 7. Air outlet duct; 8. Fan; 9. Cover; 10. Opening; 11. Flange; 12. Magnet; 13. Ribbon; 14. Slide rail; 15. Slider; 16. Bell; 17. Candle. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0035] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0037] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0038] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0039] Embodiment 1:

[0040] like Figure 1 As shown, a wind formation demonstrator comprises a base plate 1, a combustion chamber 2 is arranged on the base plate 1, a gap is provided between the combustion chamber 2 and the base plate 1, a placing table 3 for placing candles 17 is arranged in the combustion chamber 2, an air inlet 4 is arranged on the side wall of the combustion chamber 2, the air inlet 4 is connected with an air inlet duct 5 through a detachable connecting structure, an air outlet 6 is arranged on the fixed wall of the combustion chamber 2, the air outlet 6 is connected with an air outlet duct 7 through a detachable connecting structure, a fan 8 is connected in both the air inlet duct 5 and the air outlet duct 7, and the other side wall of the combustion chamber 2 has an opening 10 and is detachably covered with a cover plate 9.

[0041] After opening the cover plate 9 and lighting the candle 17, the cover plate 9 is closed. The air in the combustion chamber 2 is heated and rises, and flows out from the air outlet 6, causing the air in the combustion chamber 2 to become rarefied and the pressure to decrease. At the same time, the temperature outside the combustion chamber 2 does not change, so the pressure is higher than that inside the combustion chamber 2. Since the pressure outside the combustion chamber 2 is greater than the pressure inside the combustion chamber 2, the cold air outside the combustion chamber 2 flows into the combustion chamber 2 along the air inlet duct 5. The air in the combustion chamber 2 is heated and continuously rises and flows out, while the air outside the combustion chamber 2 continuously flows into the combustion chamber 2, thus forming a stream of air flowing from the outside of the combustion chamber 2 to the inside of the combustion chamber 2, and the flow of air forms wind, and the wind causes the fan 8 to rotate, so that the formation process of the wind can be observed with the naked eye. The air inlet duct 5 and the air outlet duct 7 are both detachably connected to the combustion chamber 2, so that it can save space when stored.

[0042] Embodiment 2:

[0043] like Figure 1-2 As shown, the detachable connection structure includes a flange 11 and a magnet 12. The flange 11 is annular, extending outward from the side walls of the air inlet 4 and the air outlet 6 of the combustion chamber 2, and the outer diameter of the flange 11 matches the inner diameter of the air outlet duct 7 and the air inlet duct 5; magnets 12 are arranged inside the flange 11, inside the air outlet duct 7 and inside the air inlet duct 5, for keeping the mutually sleeved relationship between the air outlet duct 7 and the flange 11, and between the air inlet duct 5 and the flange 11 stable. It is only necessary to sleeve the air outlet duct 7 on the flange 11, and the magnet 12 can adsorb it, which is simple to disassemble and assemble. The axis of the air outlet duct 7 and the axis of the air inlet duct 5 are perpendicular to each other, the axis of the fan 8 in the air outlet duct 7 is in the same straight line with the axis of the air outlet duct 7, and the axis of the fan 8 in the air inlet duct 5 is perpendicular to the axis of the air inlet duct 5.

[0044] Embodiment 3:

[0045] like Figure 1 and Figure 5 As shown, a streamer 13 is provided at the air inlet 4 in the combustion chamber 2. After the wind is formed, the streamer 13 will float to the side away from the air inlet 4. By providing the streamer 13, the wind path can be more intuitively seen together with the two fans 8. The streamer 13 is provided with a position adjustment structure. The distance between the streamer 13, the candle 17 and the air inlet 4 can be adjusted as needed, which is more flexible. The position adjustment structure includes a slide rail 14 and a slider 15. The top of the slide rail 14 is connected to the top wall of the combustion chamber 2. The slider 15 is slidably arranged on the slide rail 14. The slide rail 14 is parallel to the air inlet duct 5 and one end thereof extends to the side wall opening 10. When it is necessary to adjust the distance between the streamer 13, the candle 17 and the air inlet 4, the slider 15 is moved to slide on the slide rail 14 until the position of the streamer 13 is adjusted to a suitable position. One end of the slide rail 14 extends to the side wall opening 10, and the slider 15 can be moved out of the opening 10, so that the streamer 13 can be removed.

[0046] Embodiment 3:

[0047] like Figure 1 and Figure 3 As shown, a bell 16 is connected to the blades of the fan 8. When wind is generated, the fan 8 rotates to move the bell 16, so that the bell 16 generates sound, and the generation of wind can be felt auditorily, making teaching more interesting.

[0048] Embodiment 4:

[0049] like Figure 1 and Figure 4 As shown, magnets 12 are arranged inside the cover plate 9 and inside the side wall of the opening 10 of the combustion chamber 2. The magnets 12 can make the cover plate 9 cover the side of the combustion chamber 2 more stably and reliably.

[0050] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A wind formation demonstrator, characterized in that , comprising a bottom plate (1), a combustion chamber (2) is arranged on the bottom plate (1), a gap is provided between the combustion chamber (2) and the bottom plate (1), a placement table (3) for placing candles (17) is arranged in the combustion chamber (2), an air inlet (4) is arranged on the side wall of the combustion chamber (2), the air inlet (4) is connected to the air inlet duct (5) through a detachable connection structure, an air outlet (6) is arranged on the top wall of the combustion chamber (2), the air outlet (6) is connected to the air outlet duct (7) through a detachable connection structure, a fan (8) is connected to the air inlet duct (5) and the air outlet duct (7), the other side wall of the combustion chamber (2) is opened (10) and is detachably covered with a cover plate (9), the combustion chamber (2), the air inlet duct (5) and the air outlet duct (7) are all made of transparent plastic material.

2. A wind formation demonstrator according to claim 1, characterized in that: The detachable connection structure comprises: A flange (11), the flange (11) is annular and extends outward from the side walls of the air inlet (4) and the air outlet (6) of the combustion chamber (2), and the outer diameter of the flange (11) matches the inner diameter of the air outlet duct (7) and the air inlet duct (5); Magnets (12) are arranged inside the flange (11), inside the air outlet duct (7) and inside the air inlet duct (5) to keep the mutually sleeved relationship between the air outlet duct (7) and the flange (11), and between the air inlet duct (5) and the flange (11) stable.

3. A wind formation demonstrator according to claim 2, characterized in that: The axes of the air outlet duct (7) and the air inlet duct (5) are perpendicular to each other, the axis of the fan (8) in the air outlet duct (7) is in the same straight line as the axis of the air outlet duct (7), and the axis of the fan (8) in the air inlet duct (5) is perpendicular to the axis of the air inlet duct (5).

4. A wind formation demonstrator according to claim 3, characterized in that: A streamer (13) is provided at the air inlet (4) in the combustion chamber (2).

5. A wind formation demonstrator according to claim 4, characterized in that: The streamer (13) is provided with a position adjustment structure.

6. A wind formation demonstrator according to claim 5, characterized in that: The position adjustment structure comprises a slide rail (14) and a slider (15); the top of the slide rail (14) is connected to the top wall of the combustion chamber (2); the slider (15) is slidably arranged on the slide rail (14); the slide rail (14) is parallel to the air inlet duct (5) and one end thereof extends to the side wall opening (10).

7. A wind formation demonstrator according to claim 6, characterized in that: A bell (16) is connected to the blades of the fan (8).

8. A wind formation demonstrator according to claim 7, characterized in that: Magnets (12) are arranged inside the cover plate (9) and inside the side wall of the opening (10) of the combustion chamber (2).

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