Cold and hot air flow observation device

Abstract

The utility model belongs to the technical field of experiment devices, and particularly relates to a cold and hot air flow observation device which comprises a base, a supporting frame is fixedly connected to the upper surface of the base, an experiment pipe is connected in the supporting frame in an abutting mode, the bottom of the experiment pipe is connected with the base in an abutting mode, and a vertically-arranged partition plate is arranged in the experiment pipe. The partition plate divides the interior of the experiment tube into a hot air area and a cold air area, the top of the base abuts against a candle arranged at the bottom of the hot air area, and incense sticks are arranged at the top of the cold air area. The cold and hot air flow observation device provided by the utility model has the effect of helping students to more intuitively understand the cold and hot air flow principle.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental devices, and particularly relates to an observation device for the flow of hot and cold air. Background Art

[0002] The flow of hot air and cold air is a common physical phenomenon in nature, which is of great significance for understanding climate, weather, building ventilation, etc.

[0003] When teachers teach in schools, in order to help students visually observe and understand the principle of the flow of hot and cold air, it is necessary to conduct experiments on the flow of hot and cold air to deepen students' understanding of the principle. Therefore, an observation device for the flow of hot and cold air is needed for the experiment on the principle of the flow of hot and cold air. Content of the Utility Model

[0004] In order to help students understand the experiment on the principle of the flow of hot and cold air, the utility model provides an observation device for the flow of hot and cold air. The smoke generated by the incense stick enters from the cold air area, passes through the bottom of the experimental tube, and then exits from the hot air area, which has the effect of helping students more intuitively understand the principle of the flow of hot and cold air.

[0005] The utility model provides an observation device for the flow of hot and cold air, which includes a base. A support frame is fixedly connected to the upper surface of the base. An experimental tube is abutted inside the support frame. The bottom of the experimental tube abuts against the base. A vertically arranged partition plate is arranged inside the experimental tube. The partition plate divides the inside of the experimental tube into a hot air area and a cold air area. A candle placed at the bottom of the hot air area abuts against the top of the base, and an incense stick is arranged at the top of the cold air area.

[0006] By adopting the above technical solutions, first light the candle, then abut the bottom of the support frame against the base. The candle is placed inside the experimental tube, and the support frame supports and fixes the experimental tube. Place the partition plate inside the experimental tube and light the incense stick for observation. The smoke generated during the burning of the incense stick enters from the cold air area. After the smoke reaches the bottom of the experimental tube, it exits through the hot air area. By observing this phenomenon, students can be helped to understand the principle of the flow of hot and cold air.

[0007] Furthermore, the experimental tube is an experimental tube made of a transparent material.

[0008] By adopting the above technical solutions, students can directly observe the flow direction of the smoke inside the experimental tube and more intuitively observe the experiment on the flow of hot and cold air.

[0009] Furthermore, the partition plate is a partition plate made of a transparent material.

[0010] By adopting the above technical solutions, students can simultaneously observe the flow direction of the smoke inside the cold air area and the hot air area, and more intuitively observe the experiment on the flow of hot and cold air.

[0011] Furthermore, temperature measurement stickers are adhesively attached to the inner walls of the experimental tubes in the hot air area and the cold air area respectively.

[0012] By adopting the above technical solution, by observing the temperature measurement stickers, the inner wall temperature of the experimental tube in the cold air area is lower than that of the experimental tube in the hot air area, generating a temperature difference. Students can also understand the principle of hot and cold air flow by observing this phenomenon.

[0013] Furthermore, a reserved groove is provided on the upper surface of the base, and the bottom of the experimental tube abuts against the bottom of the reserved groove.

[0014] By adopting the above technical solution, the bottom of the experimental tube is placed in the reserved groove, reducing the possibility of air entering the inside of the experimental tube from the bottom end of the experimental tube due to gas flow on the upper surface of the base, and better ensuring the experimental effect.

[0015] Furthermore, the partition plate abuts against the inner wall of the experimental tube.

[0016] By adopting the above technical solution, the cold air entering is made to pass through the bottom of the experimental tube as much as possible and then discharged from the side of the hot air area, better ensuring the experimental effect.

[0017] Furthermore, a support rod is fixedly connected to the bottom of the experimental tube, and a placement groove for placing the incense stick is provided at the top of the support rod.

[0018] By adopting the above technical solution, the support rod supports the incense stick.

[0019] Furthermore, the fixing assembly includes a fixing plate fixedly connected to the top of the experimental tube. A fixing block and a support block are fixedly connected to the upper surface of the fixing plate. A spring is fixedly connected to one side of the support block close to the fixing block, and a clamping block for clamping the partition plate is fixedly connected to the end of the spring away from the support block.

[0020] By adopting the above technical solution, move the clamping block towards the support block, place the partition plate in the experimental tube, release the clamping block, and then the clamping block and the fixing block clamp and fix the partition plate, increasing the stability of the partition plate placed in the experimental tube.

[0021] The beneficial effects of the present utility model are as follows:

[0022] (1) First, light the candle, then abut the bottom of the support frame against the base. Place the candle inside the experimental tube. The support frame supports and fixes the experimental tube. Place the partition plate inside the experimental tube, light the incense stick, and observe. The smoke generated during the burning of the incense stick enters from the cold air area. After the smoke reaches the bottom of the experimental tube, it is discharged through the hot air area. Students can understand the principle of hot and cold air flow by observing this phenomenon.

[0023] (2) By observing the temperature - measuring stickers, the inner wall temperature of the experimental tube in the cold - air area is lower than that of the experimental tube in the hot - air area, generating a temperature difference. Students can also understand the principle of cold - and - hot air flow by observing this phenomenon. Brief Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present application;

[0026] Figure 2 It is a schematic structural diagram showing the candle in Embodiment 1;

[0027] Figure 3 It is a schematic structural diagram showing the placement groove in Embodiment 1;

[0028] Figure 4 It is a schematic structural diagram of Embodiment 2 of the present application;

[0029] Figure 5 It is a schematic structural diagram showing the clamping block in Embodiment 2.

[0030] Explanation of the reference numerals in the drawings: 1. Base; 11. Reserved groove; 2. Support frame; 3. Experimental tube; 31. Hot - air area; 32. Cold - air area; 4. Partition board; 5. Support rod; 51. Placement groove; 6. Incense stick; 7. Candle; 8. Temperature - measuring sticker; 9. Fixing component; 91. Fixed plate; 92. Fixed block; 93. Support block; 94. Spring; 95. Clamping block. Detailed Description of the Embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0032] The following will combine the attached Figure 1 to the attached Figure 5 and specific embodiments to elaborate on the present invention in detail.

[0033] Embodiment 1

[0034] As Figures 1 to 3As shown in the figure, a cold and hot air flow observation device provided by the utility model includes a base 1. A support frame 2 is fixedly connected to the upper surface of the base 1. An experimental tube 3 is arranged inside the support frame 2, and both ends of the experimental tube 3 are open. A reserved groove 11 is arranged on the upper surface of the base 1. The bottom end of the experimental tube 3 abuts against the bottom of the reserved groove 11, and the experimental tube 3 abuts against the support frame 2. The support frame 2 supports and fixes the experimental tube 3.

[0035] A vertically arranged partition plate 4 abuts inside the experimental tube 3. There is a distance between the bottom end of the partition plate 4 and the bottom end of the experimental tube 3. The partition plate 4 separates the internal space of the experimental tube 3. A support rod 5 is fixedly connected to the top of the experimental tube 3. A placement groove 51 is arranged on the upper surface of the support rod 5. An incense stick 6 is placed in the placement groove 51, and the incense stick 6 is placed above the cold air area 32. A candle 7 abuts against the bottom of the reserved groove 11. The candle 7 is placed directly below one of the spaces separated by the partition plate 4. The space above the candle 7 is the hot air area 31, and the space inside the experimental tube 3 opposite to the hot air area 31 is the cold air area 32.

[0036] When a cold and hot air flow observation experiment needs to be carried out, first place the candle 7 in the reserved groove 11, light the candle 7, then place the experimental tube 3 in the support frame 2, so that the bottom end of the experimental tube 3 abuts against the bottom of the reserved groove 11, and the candle 7 is placed inside the experimental tube 3. Then place the partition plate 4 inside the experimental tube 3, light the incense stick 6, and then observe.

[0037] Through this experiment, it can be seen that the smoke generated during the burning of the incense stick 6 enters from the cold air area 32. After the smoke reaches the bottom of the experimental tube 3, it is discharged through the hot air area 31. Students can understand the cold and hot air flow principle by observing this phenomenon.

[0038] The bottom end of the experimental tube 3 is placed in the reserved groove 11, which can reduce the possibility that the gas flow on the upper surface of the base 1 causes air to enter the inside of the experimental tube 3 from the bottom end of the experimental tube 3, improve the accuracy of the experiment and better ensure the experimental effect.

[0039] The experimental tube 3 is made of a transparent material, and students can directly observe the smoke flow direction inside the experimental tube 3, and observe the cold and hot air flow experiment more intuitively.

[0040] The partition plate 4 is made of a transparent material, and students can simultaneously observe the smoke flow directions inside the cold air area 32 and the hot air area 31, and observe the cold and hot air flow experiment more intuitively.

[0041] A pair of temperature measurement stickers 8 are adhesively attached to the inner wall of the experimental tube 3. The pair of temperature measurement stickers 8 are placed on both sides of the partition plate 4, and the temperature measurement stickers 8 are respectively placed in the cold air area 32 and the hot air area 31. By comparing the values of the temperature measurement stickers 8, the tube walls at the bottom of the experimental tube 3 on both sides of the partition plate 4 are respectively affected by cold air and hot air. The inner wall temperature of the experimental tube 3 in the cold air area 32 is lower than the inner wall temperature of the experimental tube 3 in the hot air area 31, generating a temperature difference. Students can also understand the principle of cold and hot air flow by observing this phenomenon.

[0042] One side of the partition plate 4 close to the inner wall of the experimental tube 3 abuts against the inner wall of the experimental tube 3, so that the incoming cold air passes through the bottom of the experimental tube 3 as much as possible and then discharges from the side of the hot air area 31, improving the accuracy of the experiment and better ensuring the experimental effect.

[0043] The implementation principle of the first embodiment of this application is: Place the candle 7 in the reserved groove 11 and light the candle 7, then place the experimental tube 3 in the support frame 2, place the partition plate 4 in the experimental tube 3, light the incense 6, and observe the flow direction of the smoke generated by the incense 6.

[0044] Embodiment Two

[0045] As Figures 4 to 5 shown, the difference between this embodiment and the first embodiment is that a fixing component 9 is connected to the top of the experimental tube 3. After the partition plate 4 is placed in the experimental tube 3, the fixing component 9 fixes the partition plate 4, increasing the stability of the partition plate 4 placed in the experimental tube 3.

[0046] The fixing component 9 includes a fixing plate 91 fixedly connected to the top of the experimental tube 3. A fixing block 92 and a support block 93 are fixedly connected to the upper surface of the fixing plate 91. A pair of springs 94 are fixedly connected to one side of the support block 93 close to the fixing block 92. One end of the spring 94 away from the support block 93 is fixedly connected to a clamping block 95. When the clamping block 95 abuts against the fixing block 92, the spring 94 is in a compressed state.

[0047] First, move the clamping block 95 to the side close to the support block 93, and the spring 94 is further compressed. Then place the partition plate 4 in the experimental tube 3, release the clamping block 95, and then the clamping block 95 and the fixing block 92 clamp and fix the partition plate 4, increasing the stability of the partition plate 4 placed in the experimental tube 3.

[0048] The above further describes the present utility model with the aid of specific embodiments. However, it should be understood that this specific description should not be construed as a limitation on the essence and scope of the present utility model. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present utility model.

Claims

1. An observation device for cold and hot air flow, characterized in that, It includes a base (1), on the upper surface of the base (1) is fixedly connected with a support frame (2), inside the support frame (2) is abutted with an experimental tube (3), the bottom of the experimental tube (3) abuts against the base (1), inside the experimental tube (3) is provided with a vertically arranged partition board (4), the partition board (4) divides the interior of the experimental tube (3) into a hot air area (31) and a cold air area (32), on the top of the base (1) is abutted with a candle (7) placed at the bottom of the hot air area (31), and at the top of the cold air area (32) is provided with an incense stick (6).

2. The hot and cold air flow observation device according to claim 1, wherein The experimental tube (3) is an experimental tube (3) made of transparent material.

3. The cold and hot air flow observation device according to claim 2, wherein, The partition board (4) is a partition board (4) made of transparent material.

4. The cold and hot air flow observation device according to claim 2, wherein, On the inner walls of the experimental tube (3) in the hot air area (31) and the cold air area (32) are respectively adhered with temperature measuring stickers (8).

5. The cold and hot air flow observation device according to claim 1, characterized in that, On the upper surface of the base (1) is provided with a reserved groove (11), and the bottom of the experimental tube (3) abuts against the bottom of the reserved groove (11).

6. The cold and hot air flow observation device according to claim 1, characterized in that, The partition board (4) abuts against the inner wall of the experimental tube (3).

7. The cold and hot air flow observation device according to claim 1, characterized in that, The bottom of the experimental tube (3) is fixedly connected with a support rod (5), and at the top of the support rod (5) is provided with a placement groove (51) for placing the incense stick (6).

8. A cold and hot air flow observation device according to claim 1, characterized in that The top of the experimental tube (3) is connected with a fixing component (9) for fixing the partition board (4).

9. The cold and hot air flow observation device according to claim 8, characterized in that, The fixing component (9) includes a fixing plate (91) fixedly connected with the top of the experimental tube (3), on the upper surface of the fixing plate (91) are fixedly connected with a fixing block (92) and a support block (93), on the side of the support block (93) close to the fixing block (92) is fixedly connected with a spring (94), and at the end of the spring (94) away from the support block (93) is fixedly connected with a clamping block (95) for clamping the partition board (4).

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