Laboratory microbiological incubator

Abstract

The utility model belongs to the technical field of constant temperature incubator, concretely is a kind of laboratory microorganism constant temperature incubator, including box, door, inner bag and controller, still include: metal water tank, solidly set in the installation groove of inner bag bottom plate opening, inner bag top is equipped with air outlet, and the fan and heater are fixedly arranged at the top of box;Air return pipe, one end is communicated with the air inlet end of fan, other end is communicated with the air return groove of inner bag bottom plate opening, and the bottom surface of inner bag bottom plate is equipped with air inlet, and air inlet and air return groove are communicated by multiple air ducts, and air duct is communicated with the installation groove of inner bag opening;Water body in the metal water tank of the utility model absorbs or releases heat when the heater starts or stops by the aid of high thermal conductivity side wall, effectively buffers temperature mutation, circulating air duct is guided by air duct, makes circulating hot air and water tank surface fully contact, recovers waste heat, both realizes the even regulation and control of inner bag temperature, and reduces energy loss.

Description

Technical Field

[0001] This utility model belongs to the field of constant temperature incubator technology, and in particular relates to a laboratory microbial constant temperature incubator. Background Technology

[0002] Microbial culture requires extremely high stability of environmental conditions (such as temperature and humidity). The main function of a constant temperature incubator is to provide a controlled and stable temperature environment to promote the growth, reproduction and preservation of microorganisms (such as bacteria, fungi and viruses) or cells.

[0003] Currently, the heating elements of existing constant temperature incubators typically operate in an intermittent start-stop mode. The moment the heating element starts and stops, it causes a violent heat input / interruption. However, the heat capacity of the air inside the incubator is limited, making it difficult to absorb and release the instantaneous thermal shock caused by the start-stop of the heater. This results in an unstable state of "sudden rise-sudden drop" in the temperature inside the incubator during the start-stop process. In severe cases, this may lead to uneven growth of the same batch of cultures due to local temperature differences, experimental failures, and other problems, thus restricting the accuracy and reliability of microbial culture.

[0004] To address the aforementioned issues, this application proposes a laboratory microbial constant temperature incubator. Utility Model Content

[0005] The purpose of this invention is to provide a laboratory microbial constant temperature incubator that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a laboratory microbial constant temperature incubator, including a box body, a box door, an inner liner and a controller, and also includes: a metal water tank, which is fixed in the mounting groove opened in the bottom plate of the inner liner. An air outlet is provided at the top of the inner liner. A fan and a heater are fixed at the top of the box body, and the air inlet of the heater is connected to the air outlet of the fan. The air outlet of the heater is connected to the air outlet.

[0008] The return air duct is connected at one end to the air inlet of the fan and at the other end to the return air slot opened in the bottom plate of the inner liner. The top surface of the bottom plate of the inner liner is provided with an air inlet, and the air inlet and the return air slot are connected by multiple air ducts. The air ducts are connected to the mounting slot opened in the inner liner.

[0009] The temperature sensor is fixed inside the inner liner and electrically connected to the controller.

[0010] Furthermore, a horizontal pipe is fixedly provided at the upper end of one opposite side wall of the inner liner, and an atomizing nozzle is installed at the end of the horizontal pipe that is close to each other. A water pipe is provided at the lower end of the horizontal pipe, and the water pipe is connected to a three-way connector. The three-way connector is connected to a water inlet pipe that penetrates the top of the metal water tank.

[0011] Furthermore, the metal water tank is equipped with a miniature water pump, and the outlet of the miniature water pump is connected to the inlet pipe. A humidity sensor is installed inside the inner tank, and both the miniature water pump and the humidity sensor are electrically connected to the controller.

[0012] Furthermore, a liquid level sensor is installed inside the metal water tank, and the liquid level sensor is electrically connected to the controller.

[0013] Furthermore, the controller's housing is equipped with an LCD screen.

[0014] Furthermore, a dustproof net is installed at the upper end of the air inlet.

[0015] Furthermore, the inner liner is provided with multiple layers of perforated placement trays.

[0016] Furthermore, a water injection pipe is installed on one side of the metal water tank, penetrating the inner liner and the side wall of the tank.

[0017] This utility model has the following beneficial effects:

[0018] In this invention, a thermal buffer mechanism is constructed during the start-up and shutdown of the heater by using the water in the metal water tank and its highly thermally conductive sidewall structure. Through efficient heat conduction, heat is absorbed or released, effectively suppressing sudden temperature rises or falls, significantly reducing temperature overshoot and periodic fluctuations, and greatly improving the stability and accuracy of the temperature control process.

[0019] This invention achieves uniform temperature control within the inner tank through the design of a circulating air duct. At the same time, the air duct's guiding structure promotes full contact between the circulating hot air and the surface of the metal water tank, transferring residual heat from the air to the metal water tank for heat recovery. This further enhances temperature control efficiency and reduces energy consumption.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the box body and inner liner structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the inner liner of this utility model;

[0025] Figure 4 This is a cross-sectional structural diagram of the metal water tank of this utility model;

[0026] Figure 5 This is a cross-sectional structural diagram of the box body and inner liner of this utility model;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] In the diagram: 1. Housing; 2. Inner liner; 201. Air duct; 202. Return air duct; 203. Air inlet; 2031. Dustproof net; 3. Metal water tank; 4. Miniature water pump; 5. T-joint; 501. Water inlet pipe; 6. Horizontal pipe; 601. Atomizing nozzle; 602. Water pipe; 7. Placement tray; 8. Fan; 9. Heater; 10. Air outlet; 11. Return air duct; 12. Temperature sensor; 13. Humidity sensor; 14. Liquid level sensor; 15. Controller. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Please see Figure 1 - Figure 5As shown, this utility model is a laboratory microbial constant temperature incubator, including a box body 1, a box door, an inner liner 2, and a controller 15. It also includes: a metal water tank 3, fixedly installed in an installation groove in the bottom plate of the inner liner 2; an air outlet 10 is provided at the top of the inner liner 2; a fan 8 and a heater 9 are fixedly installed at the top of the box body 1, with the air inlet of the heater 9 connected to the air outlet of the fan 8, and the air outlet of the heater 9 connected to the air outlet 10; a return air duct 11, one end connected to the air inlet of the fan 8, and the other end connected to a return air trough 202 in the bottom plate of the inner liner 2; an air inlet 203 is provided on the top surface of the bottom plate of the inner liner 2, and the air inlet 203 and the return air trough 202 are connected by multiple air ducts 201, which are connected to the installation groove in the inner liner 2; and a temperature sensor 12, fixedly installed inside the inner liner 2 and electrically connected to the controller 15.

[0032] This embodiment provides a laboratory microbial constant temperature incubator. The inner liner 2 is embedded in the box body 1, and the box body 1 is hinged to the front door. The metal water tank 3 is preferably made of stainless steel with good thermal conductivity. The metal water tank 3 uses the metal wall to exchange heat with the environment inside the box. It uses the high specific heat capacity of water to absorb or release heat, suppress temperature fluctuations, and achieve physical thermal buffering. A closed loop circulation is formed by the cooperation of the air outlet 10, return air pipe 11, return air slot 202, air duct 201, air inlet 203 and heater 9 to improve temperature uniformity. When the air flows through the air duct 201, it exchanges heat with the air through the metal water tank 3 to improve the thermal energy utilization rate. The fan 8 and heater 9 are also electrically connected to the controller 15. The temperature signal inside the inner liner 2 is fed back to the controller 15 in real time through the temperature sensor 12 to control the start and stop of the fan 8 and heater 9.

[0033] The inner liner 2 has horizontal pipes 6 fixedly installed on the upper ends of opposite side walls, and atomizing nozzles 601 are installed at the ends of the horizontal pipes 6 that are close to each other. Water pipes 602 are installed at the lower ends of the horizontal pipes 6, and the water pipes 602 are connected to the three-way connectors 5. The three-way connectors 5 are connected to the water inlet pipes 501 that pass through the top of the metal water tank 3. The water pipes 602 have two interfaces that are respectively connected to the left and right sides of the three-way connectors 5. The water pipes 602 are connected to the snap fasteners fixed to the inner wall of the inner liner 2. The atomizing nozzles 601 can convert liquid water into mist particles and evenly diffuse them into the air inside the inner liner 2 to increase humidity. The atomized liquid water comes from the metal water tank 3. The water in the metal water tank 3 is close to the temperature inside the inner liner 2, which avoids the problem of large temperature changes inside the inner liner 2 when using external water sources for humidification.

[0034] The metal water tank 3 is equipped with a micro water pump 4, and the outlet of the micro water pump 4 is connected to the inlet pipe 501. The inner tank 2 is equipped with a humidity sensor 13. Both the micro water pump 4 and the humidity sensor 13 are electrically connected to the controller 15. When the humidity sensor 13 detects that the humidity of the inner tank is lower than the set threshold, the controller 15 triggers the micro water pump 4 to start, and humidifies through the atomizing nozzle 601 to achieve closed-loop control of humidity.

[0035] The metal water tank 3 is equipped with a liquid level sensor 14, which is electrically connected to the controller 15. The controller 15 has an LCD screen on its casing, which can display parameters such as the inner tank temperature, humidity, and water level in the metal water tank in real time. It also supports users to input target temperature and humidity values, which is convenient for operators to monitor and adjust. The liquid level sensor 14 is used to monitor the water volume in the metal water tank 3. When the water level is too low, if it is below the safety threshold, the controller 15 will issue an alarm (such as through the LCD screen) to prevent the micro water pump 4 from burning dry or the atomizing nozzle 601 from failing to work properly due to lack of water.

[0036] The air inlet 203 is equipped with a dustproof net 2031 at the top. The dustproof net 2031 can prevent external dust and microbial particles from entering the air duct 201 and adhering to the surface of the metal water tank 3, thus affecting the heat transfer efficiency.

[0037] The inner liner 2 has a multi-layered perforated placement tray 7, which is used to place the culture dish. The perforated design facilitates air circulation across the surface of the culture dish.

[0038] The metal water tank 3 has a water injection pipe installed on one side that runs through the inner liner 2 and the side wall of the tank body 1. The water injection port of the water injection pipe is equipped with a removable cover to prevent water evaporation. Users can add water to the metal water tank through the water injection pipe to meet the needs of long-term continuous cultivation.

[0039] It is understandable that the water in the metal water tank 3 of this utility model absorbs or releases heat when the heater is turned on or off by means of the high thermal conductivity sidewall, effectively buffering the sudden temperature change. The circulating air duct guides the airflow through the air duct 201, so that the circulating hot air can fully contact the surface of the water tank and recover the waste heat. This achieves uniform temperature control of the inner tank 2 and reduces energy consumption.

[0040] A specific application of the operation process in this embodiment is as follows: Place the culture dish containing microorganisms on the placement tray 7, close the box door, and the temperature sensor 12 monitors the temperature of the inner liner. Based on the monitoring results, control the start and stop of the fan 8 and the heater 9. If the temperature is lower than the preset value, the fan 8 and the heater 9 are turned on at the same time. The hot air is blown evenly onto the surface of the culture dish through the air outlet 10 and then flows downward to the bottom plate of the inner liner. It enters the air duct 201 through the air inlet 203. When it flows over the surface of the metal water tank 3, some of the heat is absorbed by the metal water tank. Then it returns to the fan 8 through the return air duct 202 and is heated again and circulated. When the temperature is about to equal the preset value, the controller gradually reduces the power of the heater 9 until the temperature is equal to or slightly greater than the preset value. Then the heater 9 stops working completely. During the microbial culture process, the heat absorbed in the metal water tank 3 is slowly released, reducing the rate of temperature drop in the inner liner 2 caused by air heat dissipation and reducing temperature fluctuations.

[0041] Humidity sensor 13 monitors the humidity inside the inner tank 2. When the humidity is lower than the preset value, controller 15 controls micro water pump 4 to work, draw water from metal water tank 3 and atomize it and spray it into the inner tank 2 to increase the humidity inside the inner tank 2. After the humidity reaches the preset value, micro water pump 4 stops working. Humidity sensor 13 can be set to automatically monitor once every 30 minutes.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A laboratory microbial constant temperature incubator, comprising a chamber body (1), a door, an inner liner (2), and a controller (15), characterized in that, Also includes: A metal water tank (3) is fixed in the mounting groove opened in the bottom plate of the inner liner (2). The top of the inner liner (2) is provided with an air outlet (10). The top of the box body (1) is fixed with a fan (8) and a heater (9). The air inlet of the heater (9) is connected to the air outlet of the fan (8), and the air outlet of the heater (9) is connected to the air outlet (10). The return air duct (11) is connected at one end to the air inlet of the fan (8) and at the other end to the return air slot (202) opened on the bottom plate of the inner liner (2). The top surface of the bottom plate of the inner liner (2) is provided with an air inlet (203), and the air inlet (203) and the return air slot (202) are connected by multiple air ducts (201). The air ducts (201) are connected to the mounting slot opened on the inner liner (2). Temperature sensor (12) is fixed inside the inner liner (2) and electrically connected to controller (15).

2. The laboratory microbial constant temperature incubator according to claim 1, characterized in that: The inner liner (2) has a horizontal tube (6) fixed on the upper end of one opposite side wall, and an atomizing nozzle (601) is installed at one end of the horizontal tube (6) that is close to each other. The lower end of the horizontal tube (6) is provided with a water pipe (602), and the water pipe (602) is connected to a three-way connector (5). The three-way connector (5) is connected to a water inlet pipe (501) that passes through the top of the metal water tank (3).

3. A laboratory microbial constant temperature incubator according to claim 2, characterized in that: The metal water tank (3) is equipped with a micro water pump (4), and the outlet of the micro water pump (4) is connected to the inlet pipe (501). The inner tank (2) is equipped with a humidity sensor (13). The micro water pump (4) and the humidity sensor (13) are both electrically connected to the controller (15).

4. A laboratory microbial constant temperature incubator according to claim 1, characterized in that: The metal water tank (3) is equipped with a liquid level sensor (14), and the liquid level sensor (14) is electrically connected to the controller (15).

5. A laboratory microbial constant temperature incubator according to claim 1, characterized in that: The controller (15) has an LCD screen on its housing.

6. A laboratory microbial constant temperature incubator according to claim 1, characterized in that: A dustproof net (2031) is installed on the upper end of the air inlet (203).

7. A laboratory microbial constant temperature incubator according to claim 1, characterized in that: The inner liner (2) is provided with a multi-layered hollowed-out placement tray (7).

8. A laboratory microbial constant temperature incubator according to claim 1, characterized in that: A water injection pipe is installed on one side of the metal water tank (3), which penetrates the inner liner (2) and the side wall of the tank body (1).

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