Air circulation constant temperature device

Abstract

The utility model discloses an air circulation constant temperature device, relates to the technical field of medical instruments, and provides the following scheme that the air circulation constant temperature device comprises a machine body, a culture center is installed on the inner side of the machine body, the culture center comprises an upper cavity, a heating module and a lower cavity, and the lower cavity is installed below the upper cavity; a heating module is fixedly mounted on the rear side of the lower cavity, a circulating air duct is formed in the heating module, a culture dish is mounted in the middle of the lower cavity, a transparent window is mounted at the top of the upper cavity, a power unit and a sensor are mounted in the machine body, and a dustproof cover is arranged above the power unit and the sensor. The culture center is arranged, internal air is heated and circulated, additional media are not needed, convenience, rapidness and safety are achieved, heat energy is efficiently utilized through internal circulation, overall energy consumption is reduced, overall modular design is achieved, all parts of the equipment work independently and do not affect one another, and interference to constant temperature in work is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an air circulation constant temperature device. Background Art

[0002] When culturing microorganisms such as bacteria and viruses, as well as cells, a heated and insulated container is usually required for culturing and preserving cells or microbial cultures. Such containers require a high-precision temperature control system to maintain a constant temperature, be able to monitor the temperature in real time and provide numerical feedback, and quickly adjust the temperature inside the container to ensure temperature stability and uniformity inside the container.

[0003] Temperature control is extremely important when culturing existing bacteria, viruses and other microorganisms as well as cells. Due to the inlet and outlet air volume, inlet and outlet positions and other reasons, it is difficult to ensure the uniformity of the constant temperature space, which affects the cultivation. The unreasonable selection of heating plates and heat sinks increases the time required for temperature adjustment and increases the time cost. The exposed heating device is easy to burn the human body and affect the safety of the experiment. Liquids such as condensed water cannot be cleaned and removed in time, which is easy to breed bacteria and cause short circuits, posing certain safety hazards. Therefore, an air circulation constant temperature device is needed. Utility Model Content

[0004] The utility model aims to provide an air circulation constant temperature device, which solves the problem in the prior art that the uniformity of the constant temperature space is difficult to ensure and affects the culture.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air circulation constant temperature device, comprising a body, a culture center is installed on the inner side of the body, the culture center comprises an upper cavity, a heating module and a lower cavity, the lower cavity is installed below the upper cavity, the heating module is fixedly installed on the rear side of the lower cavity, a circulating air duct is opened inside the heating module, a culture dish is installed in the middle of the lower cavity, a transparent window is installed on the top of the upper cavity, a power unit and a sensor are installed inside the body, a dust cover is provided above the power unit and the sensor, a display screen is provided on the front side of the body, and a control center is installed on the rear side of the display screen.

[0006] Preferably, the upper cavity comprises a circulation fan and an air inlet, and the front side of the circulation fan is provided with an air inlet.

[0007] Preferably, the air inlets are arranged in a plurality of small circular ring shapes.

[0008] Preferably, the heating module includes a first heating shell, a heat insulation sheet is installed on the inner side of the first heating shell, a heating component is installed on the side of the heat insulation sheet, a second heating shell is arranged on one side of the heating component, a heat conduction block is arranged on the rear side of the heat insulation sheet, a TEC semiconductor is installed on the side of the heat conduction block, a heat sink is installed on the side of the TEC semiconductor, a heat sink is arranged on the rear side of the heat sink, a fan bracket is installed on the outer side of the heat sink, and the heat sink is made of aluminum material.

[0009] Preferably, the lower cavity includes a bottom shell, a plurality of cavity heat dissipation holes are opened in the middle of the bottom shell, an inner shell is installed above the bottom shell, a gas exchange channel opening is opened on the periphery of the inner shell, a temperature sensor is installed inside the inner shell, a plurality of air outlets are opened in the middle of the inner shell, a cavity thermal insulation pad is installed on the outside of the inner shell, and an outer shell is installed outside the cavity thermal insulation pad.

[0010] Preferably, the air outlets are arranged in a plurality of small circular rings, and the bottom shell, inner shell, cavity insulation pad and outer shell are arranged concentrically.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. By setting up the lower cavity, a fully surrounding cavity insulation pad is installed between the inner shell and the outer shell of the lower cavity, which has a heat preservation effect and effectively reduces the heat loss in the cavity. The inner shell is provided with drainage holes, which can also be used as channels for exchanging gases. Condensed water and other liquids flowing in through the air inlet will be discharged through the drainage holes. A large number of heat dissipation holes are distributed on the bottom shell of the lower cavity, which can discharge the waste heat generated by modules including motors in the lower cavity in a timely and rapid manner to prevent the waste heat from affecting the internal temperature of the cavity.

[0013] 2. By setting a transparent window, the transparent window can be opened and closed to ensure that the internal air can flow along the circulation path. When rapid heat dissipation is required, the transparent window can be opened to allow the hot air to be quickly discharged to achieve a cooling effect. The heating module is fixed to the rear end of the lower cavity by screws and connected to the rear air circulation path. The temperature sensor is placed at the air outlet of the inner shell to ensure the temperature uniformity, accuracy and stability in the cavity.

[0014] 3. By setting up a culture center and using semiconductor heating plates, the heating speed is faster and the response is more sensitive; the TEC1 semiconductor heating plate can quickly cool down and heat up according to the temperature requirements by powering on the positive and negative directions to keep the temperature constant; the built-in fully surrounded insulation pad has a better insulation effect, improves the temperature utilization rate, and reduces the overall energy consumption of the equipment; it is equipped with an aluminum heat sink, and its good thermal conductivity enables faster heat dissipation during the operation of the equipment; the integrated total circuit centrally processes the gas circulation system and other functions, and uses a metal shell, which can be programmed more flexibly and has better stability; the display screen operation can use the mouse, keyboard or touch operation to change the set parameters, which is easier to operate; it is equipped with a high-precision temperature sensor, placed at the air outlet, to monitor the temperature more accurately, and to monitor the circulation temperature in real time through the sensor, which has better real-time and accuracy; multiple sensor installation positions are reserved to control the internal temperature more accurately and ensure stability; the air outlet and air inlet are designed as small circles, with a large number of distributions, making the circulation speed faster. The inlet and outlet air volume of both devices are stably controlled, making the upper and lower temperatures more stable; the built-in drainage holes can better prevent condensed water and other liquids from invading the interior of the equipment; by heating the internal air and circulating it, no additional medium is required, which is more convenient, fast and safe. The internal circulation efficiently utilizes heat energy and reduces overall energy consumption;

[0015] 4. The overall open structure, close the lid when heating, and open the lid when cooling is needed, so that the internal temperature can be quickly reduced to room temperature, the cooling speed is faster, and the cooling operation is more convenient; the bottom cover is designed with large heat dissipation holes to better dissipate heat to the rest of the equipment, greatly reducing the impact of the heat generated by the rest of the equipment when working on the constant temperature space; the overall modular design, each part of the equipment works independently without affecting each other, reducing the interference with the constant temperature during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an air circulation constant temperature device of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of an air circulation constant temperature device of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a culture center of an air circulation constant temperature device of the utility model;

[0019] Figure 4 This is an exploded schematic diagram of the lower cavity structure of an air circulation constant temperature device of the utility model;

[0020] Figure 5 This is an exploded schematic diagram of a heating module structure of an air circulation constant temperature device of the utility model;

[0021] Figure 6The utility model is a schematic diagram of the display screen and control center structure of an air circulation constant temperature device.

[0022] In the figure: 1. body; 2. upper cavity; 201. circulation fan; 202. air inlet; 3. heating module; 301. first heating shell; 302. heat insulation sheet; 303. heating component; 304. second heating shell; 305. heat conductive block; 306. TEC semiconductor; 307. heat sink; 308. heat dissipation fan; 309. fan bracket; 4. lower cavity; 401. bottom shell; 402. cavity heat dissipation hole; 403. inner shell; 404. exchange gas channel opening; 405. temperature sensor; 406. air outlet; 407. cavity heat insulation pad; 408. outer shell; 5. circulation air duct; 6. culture dish; 7. transparent window; 8. power unit and sensor; 9. dust cover; 10. display screen; 11. control center. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] like Figure 1-6 As shown, an air circulation constant temperature device in the figure includes a body 1, characterized in that: a culture center is installed on the inner side of the body 1, the culture center includes an upper cavity 2, a heating module 3 and a lower cavity 4, the lower cavity 4 is installed below the upper cavity 2, the heating module 3 is fixedly installed on the rear side of the lower cavity 4, a circulating air duct 5 is opened inside the heating module 3, a culture dish 6 is installed in the middle of the lower cavity 4, a transparent window 7 is installed on the top of the upper cavity 2, a power unit and a sensor 8 are installed inside the body 1, a dust cover 9 is provided above the power unit and the sensor 8, a display screen 10 is provided on the front side of the body 1, and a control center 11 is installed on the rear side of the display screen 10.

[0026] The upper cavity 2 includes a circulation fan 201 and an air inlet 202 . The air inlet 202 is disposed on the front side of the circulation fan 201 .

[0027] The air inlet 202 is provided in a plurality of small circular rings, and is designed to be small circles with a large number of distributions, so that the circulation speed is faster, and the setting of the air outlet 406 is coordinated to stabilize the air intake control and make the upper and lower temperatures more stable.

[0028] The heating module 3 includes a first heating shell 301, a heat insulating sheet 302 is installed on the inner side of the first heating shell 301, a heating component 303 is installed on the side of the heat insulating sheet 302, a second heating shell 304 is arranged on one side of the heating component 303, a heat conducting block 305 is arranged on the rear side of the heat insulating sheet 302, a TEC semiconductor 306 is installed on the side of the heat conducting block 305, a heat sink 307 is installed on the side of the TEC semiconductor 306, a heat sink 308 is arranged on the rear side of the heat sink 307, a fan bracket 309 is installed on the outer side of the heat sink 308, the heat sink 307 is made of aluminum material, and is equipped with an aluminum heat sink 307, and good thermal conductivity enables faster heat dissipation during the operation of the equipment.

[0029] The lower cavity 4 includes a bottom shell 401, a plurality of cavity heat dissipation holes 402 are opened in the middle of the bottom shell 401, an inner shell 403 is installed above the bottom shell 401, a gas exchange channel opening 404 is opened on the periphery of the inner shell 403, a temperature sensor 405 is installed inside the inner shell 403, a plurality of air outlets 406 are opened in the middle of the inner shell 403, a cavity insulation pad 407 is installed on the outside of the inner shell 403, and an outer shell 408 is installed outside the cavity insulation pad 407.

[0030] There are several air outlets 406 in the shape of small circular rings. The bottom shell 401, inner shell 403, cavity insulation pad 407 and outer shell 408 are concentrically arranged and designed into small circles. A large number of them are distributed to make the circulation speed faster. The setting of the air inlet 202 makes the air intake control stable and the upper and lower temperatures more stable. The setting of the cavity insulation pad 407 has a thermal insulation effect, which effectively reduces the heat loss in the cavity.

[0031] Working principle: First, after the power is turned on and the temperature is set, the TEC semiconductor 306 and the heat dissipation fan 308 start to work, and the heat is transferred to the circulating air duct 5 through the front heating component 303, and the low temperature generated by the TEC is removed through the rear heat sink 307 and the heat dissipation fan 308, reducing the impact of the low temperature on the constant temperature effect; after the heating module 3 generates heat, the circulating fan 201 starts to drive the internal air circulation, and the hot air generated around the heating module 3 is sucked to the rear end of the circulating fan 201, and enters from the air inlet 202 of the culture chamber through the fan. When the hot air is blown out of the air inlet 202, the air pressure inside the culture chamber is greater than that at the air outlet 406. When the circulating fan 201 circulates and inhales air, it drives the air to flow along the circulating path, further reducing the air pressure at the lower end of the air outlet 406 rapidly. At this time, the heated air in the cavity begins to enter the air outlet 406 from the cavity; the air outlets 406 here are all circular holes evenly distributed on the annular side wall, which is conducive to uniformity everywhere; after the heated air enters the air outlet 406, it passes through the heating module 3 along the circulating air duct 5 under the action of the circulating fan 201, and the air is heated again; because this air is heated at the beginning, only a small part of the heat is dissipated after circulation, so after passing through the heating module 3, only less energy is needed to quickly heat it to the set temperature again.

[0032] Next, the transparent window 7 can be opened and closed to ensure that the internal air can flow along the circulation path. When rapid heat dissipation is required, the transparent window 7 can be opened to allow the hot air to be quickly discharged to achieve a cooling effect; the heating module 3 is fixed to the rear end of the lower cavity 4 by screws and connected to the rear end air circulation path; the temperature sensor 405 is placed at the air outlet 406 of the inner shell 403 to ensure the temperature uniformity, accuracy and stability in the cavity; a fully surrounding cavity insulation pad 407 is installed between the inner shell 403 and the outer shell 408 of the lower cavity 4, which has a heat preservation effect and effectively reduces the heat loss in the cavity; the inner shell 403 is provided with a drainage hole, which can also be used as a channel for exchanging gas, and the condensed water and other liquids flowing in through the air outlet will be discharged through the drainage hole; a large number of heat dissipation holes are distributed on the bottom shell 401 of the lower cavity 4, which can discharge the waste heat generated by the modules including the motor in the lower cavity 4 in a timely and rapid manner to prevent the waste heat from affecting the temperature inside the cavity.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air circulation thermostatic device, comprising a body (1), characterized in that: A culture center is installed on the inner side of the body (1), and the culture center comprises an upper cavity (2), a heating module (3) and a lower cavity (4); the lower cavity (4) is installed below the upper cavity (2); the heating module (3) is fixedly installed on the rear side of the lower cavity (4); a circulating air duct (5) is opened inside the heating module (3); a culture dish (6) is installed in the middle of the lower cavity (4); a transparent window (7) is installed on the top of the upper cavity (2); a power unit and a sensor (8) are installed inside the body (1); a dust cover (9) is provided above the power unit and the sensor (8); a display screen (10) is provided on the front side of the body (1); and a control center (11) is installed on the rear side of the display screen (10).

2. The air circulation constant temperature device according to claim 1, characterized in that: The upper cavity (2) comprises a circulation fan (201) and an air inlet (202), and the air inlet (202) is arranged on the front side of the circulation fan (201).

3. An air circulation constant temperature device according to claim 2, characterized in that: The air inlets (202) are arranged in a plurality of small circular ring shapes.

4. The air circulation constant temperature device according to claim 1, characterized in that: The heating module (3) comprises a first heating shell (301), a heat insulating sheet (302) is installed on the inner side of the first heating shell (301), a heating component (303) is installed on the side of the heat insulating sheet (302), a second heating shell (304) is arranged on one side of the heating component (303), a heat conducting block (305) is arranged on the rear side of the heat insulating sheet (302), a TEC semiconductor (306) is installed on the side of the heat conducting block (305), a heat sink (307) is installed on the side of the TEC semiconductor (306), a heat dissipation fan (308) is arranged on the rear side of the heat dissipation fan (307), a fan bracket (309) is installed on the outer side of the heat dissipation fan (308), and the heat dissipation fan (307) is made of aluminum material.

5. The air circulation constant temperature device according to claim 1, characterized in that: The lower cavity (4) comprises a bottom shell (401), a plurality of cavity heat dissipation holes (402) are provided in the middle of the bottom shell (401), an inner shell (403) is installed above the bottom shell (401), an exchange gas channel opening (404) is provided on the periphery of the inner shell (403), a temperature sensor (405) is installed inside the inner shell (403), a plurality of air outlets (406) are provided in the middle of the inner shell (403), a cavity heat insulation pad (407) is installed on the outside of the inner shell (403), and an outer shell (408) is installed outside the cavity heat insulation pad (407).

6. The air circulation constant temperature device according to claim 5, characterized in that: The air outlets (406) are arranged in a plurality of small circular rings, and the bottom shell (401), the inner shell (403), the cavity heat insulation pad (407) and the outer shell (408) are arranged concentrically.

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