Electrothermal blowing drying box with rapid cooling structure

Abstract

The utility model discloses an electrothermal blowing drying box with a quick cooling structure, which belongs to the field of electrothermal blowing drying boxes and comprises a box body, the arranged quick cooling mechanism is matched with the electrothermal blowing drying box for use, and when the electrothermal blowing drying box needs to be cooled, an air valve and an air pump are opened on the premise that a box door is not opened; high-temperature gas in the box body is discharged out of the box through the gas valve, the high-temperature gas in the box body can be rapidly pumped out under the action of negative pressure suction force of the sucking pump, the high-temperature gas enters the snakelike gas flow cavity in the back plate from the gas inlet through the first connecting pipe, and the high-temperature gas flows in the snakelike gas flow cavity through the gas inlet. After the cooling liquid cavity is filled with cooling liquid through the liquid adding opening, heat of high-temperature gas in the snake-shaped airflow cavity can be exchanged and taken away through the cooling liquid in the cooling liquid cavity according to the heat exchange principle, and the cooled gas is exhausted through the exhaust pipe, so that the purpose of rapidly cooling the electrothermal blowing drying box is achieved.

Description

Technical Field

[0001] The utility model relates to the field of electric heating blast drying ovens, in particular to an electric heating blast drying oven with a quick cooling structure. Background Art

[0002] Electric forced air drying ovens, also known as "drying ovens," utilize electric heating to conduct forced air circulation drying tests. They are divided into forced air drying and vacuum drying. Forced air drying uses a circulating fan to blow hot air to maintain temperature equilibrium within the oven. Vacuum drying uses a vacuum pump to extract air from the oven, lowering the atmospheric pressure below normal pressure to maintain a clean product for testing. These ovens are commonly used primarily for drying samples and can also provide the required temperature environment for experiments. Drying ovens are used in various industries, including chemical, pharmaceutical, foundry, automotive, food, and machinery. They are generally available in models with galvanized steel or stainless steel interiors, with analog or digital displays, with natural convection or forced air circulation, and in both conventional and vacuum oven styles.

[0003] In the prior art, during the research and development of flotation agents, electric blast drying ovens are often used to remove moisture from samples to prevent them from affecting the quality and performance of the research and development. However, during the research and development test process, the electric blast drying oven often needs to continuously process different samples or batches. During this process, it is necessary to quickly cool the drying chamber inside the electric blast drying oven to facilitate the removal and placement of samples. However, due to the lack of rapid cooling measures in existing electric blast drying ovens, the electric blast dryer is generally stopped and the heat in the drying chamber is dissipated to the outside by opening the oven door to achieve natural cooling. This results in a low cooling speed and a slow cooling efficiency, and it takes a long time to cool it down. This not only makes it inconvenient to quickly remove the dried sample and place the sample to be processed next time into the drying chamber inside the oven, but also reduces work efficiency. At the same time, the discharged high-temperature gas can easily cause burns to users. Utility Model Content

[0004] The main purpose of the utility model is to provide an electric heating blast drying oven with a fast cooling structure, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An electric blast drying oven with a quick cooling structure comprises a box body, the front end of the box body being movably connected to a box door, and the bottom surface of the box body being fixedly connected to a base, the rear end of the box body being provided with a quick cooling mechanism, and the quick cooling mechanism comprising an air valve, a back plate, a first connecting pipe, an air extraction pump, a second connecting pipe and a heat sink, the air valve being fixedly connected to the top end of an air extraction port on the top surface of the box body, and the back plate being fixedly connected to the rear end of the box body, the first connecting pipe being fixedly connected between the air extraction port and the air inlet on the top surface of the back plate, and the second connecting pipe being fixedly connected between the exhaust port on the right side of the back plate and the input end of the air extraction pump, and the heat sink being fixedly connected to the rear end of the back plate.

[0007] Preferably, an air extraction port communicating with the interior of the box body is fixedly mounted on the top surface of the box body, and an air valve is fixedly mounted on the top end of the air extraction port.

[0008] Preferably, the back plate is fixedly mounted on the rear end wall of the box body, and a serpentine airflow cavity and a cooling liquid cavity are provided inside the back plate, the serpentine airflow cavity is located in the cooling liquid cavity, and an air inlet and an exhaust port connected to the input end and the output end of the serpentine airflow cavity are fixedly mounted in the middle of the left and right sides of the top surface of the back plate respectively, and a first connecting pipe is fixedly mounted between the air inlet and the air valve.

[0009] Preferably, a second connecting pipe is fixedly installed between the input end and the exhaust port of the air extraction pump, and an exhaust pipe is fixedly installed on the output end of the air extraction pump.

[0010] Preferably, a liquid filling port is fixedly installed on the right side of the top surface of the back plate, and an external threaded ring is fixedly installed on the top of the liquid filling port, the external thread of the external threaded ring is connected to an internal threaded cover, and a transparent observation port is also fixedly installed on the left side wall of the back plate.

[0011] Preferably, the heat sink is fixedly mounted on the rear end wall of the back plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, a quick cooling mechanism is provided to cooperate with the use of an electric blast drying oven. When the electric blast drying oven needs to be cooled, the air valve and the air extraction pump are opened without opening the oven door. The high-temperature gas in the oven will be discharged out of the oven through the air valve, and under the negative pressure suction of the air extraction pump, the high-temperature gas in the oven can be quickly extracted. The high-temperature gas will enter the serpentine air flow cavity in the back plate from the air inlet through the first connecting pipe. During the flow of the high-temperature gas in the serpentine air flow cavity, the coolant is filled into the coolant cavity through the liquid filling port. According to the heat exchange principle, the high-temperature gas can be discharged out of the oven through the air valve. The coolant in the cooling liquid chamber exchanges and takes away the heat of the high-temperature gas in the serpentine airflow chamber. After cooling, the gas will enter the second connecting pipe through the exhaust port and be finally discharged through the exhaust pipe. At the same time, the heat absorbed by the coolant can be discharged through the heat sink to conduct heat, dissipate heat and cool the coolant, thereby achieving the purpose of rapid cooling of the electric blast drying oven, which not only improves the cooling speed and efficiency, but also avoids the problem of burns to the user caused by high-temperature gas, and facilitates the rapid removal and placement of the dried samples in the box, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a rear view schematic diagram of the overall structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of the box body of the present utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of the quick cooling mechanism of the present utility model;

[0018] Figure 5 A schematic cross-sectional view of the back plate of the present invention;

[0019] Figure 6 For the utility model Figure 5 A magnified schematic diagram of the structure at point A.

[0020] In the figure: 1. Box body; 2. Box door; 3. Base; 4. Quick cooling mechanism; 5. Air extraction port; 6. Air valve; 7. Back panel; 8. Air inlet; 9. Exhaust port; 10. First connecting pipe; 11. Air extraction pump; 12. Second connecting pipe; 13. Exhaust pipe; 14. Serpentine air flow chamber; 15. Cooling liquid chamber; 16. Liquid filling port; 17. External thread ring; 18. Internal thread cover; 19. Observation port; 20. Heat sink. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1 - Figure 6 As shown, an electric hot air drying oven with a quick cooling structure includes a box body 1, the front end of the box body 1 is movably connected to a box door 2, and the bottom surface of the box body 1 is fixedly connected to a base 3, the rear end of the box body 1 is provided with a quick cooling mechanism 4, and the quick cooling mechanism 4 includes an air valve 6, a back plate 7, a first connecting pipe 10, an air pump 11, a second connecting pipe 12 and a heat sink 20, the air valve 6 is fixedly connected to the top of the air suction port 5 on the top surface of the box body 1, and the back plate 7 is fixedly connected to the rear end of the box body 1, the first connecting pipe 10 is fixedly connected between the air suction port 5 and the air inlet 8 on the top surface of the back plate 7, and the second connecting pipe 12 is fixedly connected between the exhaust port 9 on the right side of the back plate 7 and the input end of the air suction pump 11, and the heat sink 20 is fixedly connected to the rear end of the back plate 7.

[0023] like Figure 3 As shown, an air extraction port 5 communicating with the interior of the box 1 is fixedly mounted on the top surface of the box 1, and an air valve 6 is fixedly mounted on the top of the air extraction port 5. By opening the air valve 6, the high-temperature gas generated in the drying chamber of the box 1 can be discharged from the air extraction port 5 without opening the door 2.

[0024] like Figure 4 and Figure 5 As shown, the back plate 7 is fixedly mounted on the rear end wall of the box body 1, and a serpentine air flow chamber 14 and a cooling liquid chamber 15 are provided inside the back plate 7. The serpentine air flow chamber 14 is located in the cooling liquid chamber 15, and an air inlet 8 and an exhaust port 9 connected to the input end and the output end of the serpentine air flow chamber 14 are fixedly mounted in the middle of the left and right sides of the top surface of the back plate 7, respectively. A first connecting pipe 10 is fixedly mounted between the air inlet 8 and the air valve 6. After the high-temperature gas discharged from the air extraction port 5 enters the serpentine air flow chamber 14 from the air inlet 8 through the first connecting pipe 10, the high-temperature gas is wrapped by the coolant filled in the cooling liquid chamber 15 during the flow of the serpentine air flow chamber 14. The heat of the high-temperature gas in the serpentine air flow chamber 14 is exchanged and taken away by the coolant and the heat exchange principle. The serpentine air flow chamber 14 can extend the flow time of the high-temperature gas to ensure that the coolant can fully exchange heat and cool the high-temperature gas, so as to achieve the purpose of cooling the high-temperature gas. The cooled gas will be discharged through the exhaust port 9.

[0025] like Figure 4As shown, a second connecting pipe 12 is fixedly installed between the input end of the vacuum pump 11 and the exhaust port 9, and an exhaust pipe 13 is fixedly installed on the output end of the vacuum pump 11. When the vacuum pump 11 is turned on, negative pressure vacuum can be applied at the exhaust port 9 through the second connecting pipe 12, so as to quickly evacuate the high-temperature gas in the drying chamber in the box body 1, so that the drying chamber in the box body 1 can be quickly cooled down, and the vacuum pump 11 can discharge the cooled gas through the second connecting pipe 12, so as to prevent the problem of burns and injuries caused by the high-temperature gas being discharged without cooling.

[0026] like Figure 2 、 Figure 5 and Figure 6 As shown, a liquid filling port 16 is fixedly mounted on the right side of the top surface of the back plate 7, and an externally threaded ring 17 is fixedly mounted on the top of the liquid filling port 16. The external thread of the externally threaded ring 17 is connected to an internally threaded cover 18. A transparent observation port 19 is also fixedly mounted on the left side wall of the back plate 7. By unscrewing the internally threaded cover 18 on the externally threaded ring 17, coolant can be added through the liquid filling port 16 to prevent the coolant from absorbing heat and evaporating, thereby achieving an effective cooling effect. The condition of the coolant in the coolant chamber 15 can be observed through the observation port 19.

[0027] like Figure 2 and Figure 4 As shown, the heat sink 20 is fixedly mounted on the rear end wall of the back plate 7. The heat sink 20 can absorb the heat from the coolant in the coolant cavity 15 and dissipate the heat into the air according to its own material properties, thereby preventing the coolant temperature from being too high and affecting the cooling effect.

[0028] It should be noted that the present invention is an electric heating blast drying oven with a quick cooling structure. Unscrew the internal thread cover 18 from the top of the liquid filling port 16, and fill the cooling liquid cavity 15 with cooling liquid. Then, screw the internal thread cover 18 to the external thread ring 17 at the top of the liquid filling port 16 and cover the internal thread cover 18 on the liquid filling port 16. When the sample is dried in the drying chamber in the box body 1 and needs to be taken out to dry the next sample, open the air valve installed at the top of the air extraction port 5 on the top surface of the box body 1. Valve 6 is opened, and the vacuum pump 11 located on the right side of the box body 1 is turned on. The vacuum pump 11 will vacuum the drying chamber in the box body 1 to quickly extract the high-temperature gas in the drying chamber in the box body 1, so that the drying chamber can be cooled down quickly. The high-temperature gas in the drying chamber in the box body 1 is extracted through the air valve 6. The high-temperature gas will pass through the first connecting pipe 10 from the air inlet 8 on the top surface of the back plate 7 into the serpentine airflow cavity 14 opened in the back plate 7. The high-temperature gas will snake along the serpentine airflow cavity 14. During the flow of the serpentine trajectory, since the serpentine airflow cavity 14 is in the cooling liquid cavity 15, and the cooling liquid cavity 15 is pre-injected with cooling liquid, the cooling liquid will completely maintain the serpentine airflow cavity 14, and according to the principle of heat exchange, the high-temperature gas will take away the heat of the high-temperature gas when flowing in the serpentine airflow cavity 14, and the heat sink 20 will, according to its own material characteristics, conduct the heat carried by the coolant in the cooling liquid cavity 15 during heat exchange and dissipate it into the air to avoid the problem of the coolant temperature being too high. The cooled gas will be discharged through the exhaust port 9 and then enter the vacuum pump 11 through the second connecting pipe 12. The vacuum pump 11 discharges the gas into the air through the second connecting pipe 12 on the output end, thereby achieving the purpose of rapid cooling and cooling of the electric blast drying box, which not only improves the cooling speed and efficiency, but also avoids the problem of burns to the user caused by high-temperature gas, and facilitates the rapid removal and placement of the dried samples in the box, thereby improving work efficiency.

[0029] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, various improvements may be made to the present invention and its components may be replaced with equivalents, or some of its technical features may be replaced with equivalents without departing from the scope of the present invention. Anything within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric hot air drying oven with a fast cooling structure, comprising a box body (1), a box door (2) movably connected to the front end of the box body (1), and a base (3) fixedly connected to the bottom surface of the box body (1), characterized in that: The rear end of the box body (1) is provided with a quick cooling mechanism (4), and the quick cooling mechanism (4) comprises an air valve (6), a back plate (7), a first connecting pipe (10), an air pump (11), a second connecting pipe (12) and a heat sink (20), wherein the air valve (6) is fixedly connected to the top of the air suction port (5) on the top surface of the box body (1), and the back plate (7) is fixedly connected to the rear end of the box body (1), the first connecting pipe (10) is fixedly connected between the air suction port (5) and the air inlet (8) on the top surface of the back plate (7), and the second connecting pipe (12) is fixedly connected between the exhaust port (9) on the right side of the back plate (7) and the input end of the air pump (11), and the heat sink (20) is fixedly connected to the rear end of the back plate (7).

2. The electric heating blast drying oven with a rapid cooling structure according to claim 1, characterized in that: An air extraction port (5) communicating with the interior of the box (1) is fixedly mounted on the top surface of the box (1), and an air valve (6) is fixedly mounted on the top end of the air extraction port (5).

3. The electric heating blast drying oven with a rapid cooling structure according to claim 2, characterized in that: The back plate (7) is fixedly mounted on the rear end wall of the box body (1), and a serpentine airflow cavity (14) and a cooling liquid cavity (15) are provided inside the back plate (7), the serpentine airflow cavity (14) is located in the cooling liquid cavity (15), and an air inlet (8) and an air outlet (9) connected to the input end and the output end of the serpentine airflow cavity (14) are fixedly mounted in the middle of the left side and the right side of the top surface of the back plate (7), respectively, and a first connecting pipe (10) is fixedly mounted between the air inlet (8) and the air valve (6).

4. The electric heating blast drying oven with a rapid cooling structure according to claim 3, characterized in that: A second connecting pipe (12) is fixedly installed between the input end of the air pump (11) and the exhaust port (9), and an exhaust pipe (13) is fixedly installed on the output end of the air pump (11).

5. The electric heating blast drying oven with a rapid cooling structure according to claim 4, characterized in that: A liquid filling port (16) is fixedly mounted on the right side of the top surface of the back plate (7), and an external threaded ring (17) is fixedly mounted on the top end of the liquid filling port (16). The external thread of the external threaded ring (17) is connected to an internal threaded cover (18). A transparent observation port (19) is also fixedly mounted on the left side wall of the back plate (7).

6. The electric heating blast drying oven with a rapid cooling structure according to claim 5, characterized in that: The heat sink (20) is fixedly mounted on the rear end wall of the back plate (7).

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