CN220926753U - Incubator - Google Patents

Abstract

The embodiment of the application relates to the technical field of biological culture equipment, and discloses an incubator. The incubator comprises an inner cavity and an air flow channel which is formed in the inner cavity through separation, a temperature measuring unit which is positioned outside the air flow channel is arranged in the inner cavity, a heating unit and a refrigerating unit are respectively arranged on the air flow channel, the incubator is provided with a controller, the controller is respectively connected with the temperature measuring unit, the heating unit and the refrigerating unit, and the controller is used for controlling the opening/closing of the heating unit and the refrigerating unit according to the temperature measuring result of the temperature measuring unit. The incubator provided by the embodiment of the application can adapt to experimental requirements under the environment of original stable temperature.

Description

Incubator

Technical Field

The embodiment of the application relates to the technical field of biological culture equipment, in particular to an incubator.

Background

Numerous geographical studies have shown that the primary environment in which anaerobic microorganisms are located is a stable temperature environment that is not affected by seasonal changes and surface air temperature variations due to the relative limitations of solar thermal radiation, air thermal convection, soil thermal conduction and water thermal convection, as well as the large specific heat capacities of moist soil and water. For unknown anaerobic microbial flora systems, differences in experimental conditions and the native environment will directly lead to changes in the activity of anaerobic microorganisms, changes in the metabolic patterns of anaerobic microorganisms, and even changes in the structure of the anaerobic microbial population. In addition, a large number of aquatic organisms living in a low temperature environment, the somatic cells of which can maintain healthy metabolic processes in a low temperature and low oxygen environment. When the culture temperature is higher than the original environment, metabolic abnormality is easy to occur, and the pathological conditions such as abnormal expression of active protein, reduced activity of active protein, abnormal metabolic pathway and the like are often presented. For aquatic organisms in a low-temperature environment, the temperature state of the experimental condition is also significant to be consistent with the original environment.

That is, temperature has a significant regulatory impact on cytological studies of anaerobic microorganisms and low temperature environmental aquatic organisms. For example, in an actual culturing process, anaerobic microorganisms may normally undergo life processes when the culturing temperature is within a suitable range of the anaerobic microorganisms. In addition, the high temperature has a remarkable effect on the microorganism, and when the culture temperature exceeds the most suitable growth temperature of the microorganism, the metabolism rate of the microorganism increases and the growth period shortens. However, too high a temperature may cause damage to the cell membrane and internal structures of the microorganism, and even death of the microorganism. In the incubator used by the current experimenters, the culture temperature takes the room temperature of the experiment as the lowest point, and the fluctuation range is larger. The method has larger deviation from the original environment of deep soil or deep water and deep sea, which is stabilized at about 20 ℃ (celsius degree), and the experimental data and the research result are greatly influenced by the culture of the sample under the temperature condition. Therefore, how to adapt the incubator to the experimental needs in a temperature environment where the incubator is originally stable is an important issue.

Disclosure of utility model

The embodiment of the application aims to provide an incubator which can meet the experimental requirements under the environment of stable temperature of the original.

In order to solve the technical problems, the embodiment of the application provides an incubator, which comprises an inner cavity and an air flow channel formed in the inner cavity through separation, wherein a temperature measuring unit positioned outside the air flow channel is arranged in the inner cavity, a heating unit and a refrigerating unit are respectively arranged on the air flow channel, the incubator is provided with a controller, the controller is respectively connected with the temperature measuring unit, the heating unit and the refrigerating unit, and the controller is used for controlling the opening/closing of the heating unit and the refrigerating unit according to the temperature measuring result of the temperature measuring unit.

The incubator provided by the embodiment of the application adopts a controller, a heating unit and a refrigerating unit to form a full-temperature type bidirectional temperature control system. The working temperature is set through the controller, the system starts the heating unit to perform positive temperature adjustment when the temperature value of the inner cavity is lower than a set value, and starts the refrigerating assembly to perform negative temperature adjustment when the temperature value of the inner cavity is higher than the set value. The positive and negative temperature regulation automatically switches and operates, so that good stability of the temperature environment of the inner cavity is ensured, and in-situ temperature culture of a sample is ensured, so that the experiment requirement under the temperature environment with stable original temperature is met.

In some embodiments, the wall of the inner cavity is provided with a mounting hole facing the airflow channel, and the refrigeration unit comprises a refrigeration plate mounted on a side of the mounting hole near the inner cavity.

In some embodiments, a gasket is disposed between the refrigeration plate and the cavity wall of the inner cavity.

In some embodiments, the incubator further comprises a heat dissipation system mounted on the other side of the mounting hole remote from the inner chamber.

In some embodiments, the controller is connected to the heating unit via a first relay for controlling the on-off of the power supply to the heating unit.

In some embodiments, the controller is connected to the refrigeration unit via a second relay, the second relay being used to control the on-off of the power supply to the refrigeration unit.

In some embodiments, the refrigeration unit is a compressor or a semiconductor refrigeration plate.

In some embodiments, the lumen wall of the inner lumen is further provided with an operative aperture, and the airflow channel is formed in a region of the lumen wall of the inner lumen remote from the operative aperture.

In some embodiments, a convection circulation fan is disposed within the gas flow channel for circulating gas within the gas flow channel.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic side view of an incubator according to some embodiments of the present application;

FIG. 2 is a schematic top view of an incubator according to some embodiments of the present application;

FIG. 3 is a schematic cross-sectional view of an incubator according to some embodiments of the present application;

FIG. 4 is a schematic view of the mounting structure of a refrigeration plate in an incubator according to some embodiments of the present application;

FIG. 5 is a schematic diagram of the principle and structure of a semiconductor refrigeration plate used in an incubator according to some embodiments of the present application;

FIG. 6 is a block diagram of an incubator according to some embodiments of the present application employing semiconductor refrigeration panels;

FIG. 7 is a schematic diagram of the principle and structure of a refrigeration compressor employed in an incubator according to some embodiments of the present application;

FIG. 8 is a block diagram of an incubator according to some embodiments of the present application employing a refrigeration compressor;

FIG. 9 is a block diagram of circuitry for an incubator employing semiconductor refrigeration boards in accordance with some embodiments of the present application;

FIG. 10 is a block diagram of circuitry for an incubator employing a refrigeration compressor in accordance with some embodiments of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. The claimed application may be practiced without these specific details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments can be mutually combined and referred to without contradiction.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

During the biological cultivation using the incubator, there is a significant regulatory effect of temperature on the growth process of anaerobic microorganisms and low temperature environmental aquatic organisms. The single heating type common anaerobic workstation used by the current experimenters, namely the single heating type incubator, has only a heating temperature control function, and the culture temperature takes the room temperature of the experiment as the lowest point. The single-heating type common anaerobic workstation cannot provide a stable culture environment even lower than room temperature for experimenters, so that the influence of temperature on biological regulation cannot be avoided. Part of the experimenters used anaerobic bags or anaerobic tanks to place the samples in a refrigerated incubator or refrigerator for culturing to achieve low temperature culturing. But this approach has the following disadvantages:

1. anaerobic bags (sealed bags) or anaerobic tanks (sealed tanks) require special preparation of internal anaerobic environments, are cumbersome to operate, and have limited sample capacity. In the case of a large sample flux, this mode of operation is essentially impossible;

2. the anaerobic bag (sealing bag) or the anaerobic tank (sealing tank) is of a closed structure, so that observation and adjustment of the growth condition of the sample can not be performed in the culture process;

3. The anaerobic bag or the anaerobic tank is an operation mode for preparing anaerobic culture for a long time, and the anaerobic bag or the anaerobic tank is cultured in an air background without observation for a long time, so that the risks of anaerobic failure and precious sample loss exist;

4. And in order to reduce failure risk, the anaerobic bags or the anaerobic tanks are used in a large amount, and self-inspection and even maintenance are required to be carried out on the tightness regularly, so that the daily running cost investment of a laboratory is greatly improved.

The defects are caused by lack of inner cavity refrigeration control of a single-heating type common anaerobic workstation, so that the incubator in the prior art cannot solve the experimental requirement of a primary stable temperature environment. Meanwhile, no other alternative solution exists for in vitro culture of the aquatic organism cells in a low-temperature environment, and the research in the direction cannot be basically carried out.

In order to overcome the defect that a single heating type common anaerobic workstation can only provide a culture environment higher than room temperature but cannot provide a culture environment lower than room temperature, some embodiments of the application provide an incubator. The incubator adopts a bidirectional temperature controller, a heating component and a refrigerating component to form a full-temperature bidirectional temperature control system. The working temperature is set through the bidirectional temperature controller, the heating component is started to carry out positive temperature adjustment when the temperature of the inner cavity is lower than a set value, and the refrigerating component is started to carry out negative temperature adjustment when the temperature of the inner cavity is higher than the set value. The positive and negative temperature regulation can be automatically switched to operate, so that the good stability of the temperature environment of the inner cavity is ensured. And when the room temperature is higher than the culture temperature, full-cavity refrigeration is performed, so that the in-situ temperature culture of the sample is ensured.

An incubator according to some embodiments of the present application will be described below with reference to fig. 1 to 10.

As shown in fig. 1 to 10, an incubator according to some embodiments of the present application includes an inner cavity 11 and an air flow channel 12 formed in the inner cavity 11 by separation, a temperature measuring unit 13 located outside the air flow channel 12 is disposed in the inner cavity 11, a heating unit 14 and a refrigerating unit 15 are disposed on paths of the air flow channel 12, the incubator is provided with a controller 16, the controller 16 is respectively connected with the temperature measuring unit 13, the heating unit 14 and the refrigerating unit 15, and the controller 16 is used for controlling on/off of the heating unit 14 and the refrigerating unit 15 according to a temperature measurement result of the temperature measuring unit 13.

The inner cavity 11 forms an inner space of the incubator body and can provide an operation space for biological culture. The air flow passage 12 may be formed by partitioning the inner chamber 11. The temperature measuring unit 13 is arranged at a specific part of the inner cavity 11, and different types of temperature sensors can be adopted, so that the temperature environment of the sample can be truly reflected through the temperature data measured by the temperature measuring unit 13. The heating unit 14 and the refrigerating unit 15 are arranged on the path of the directional circulating airflow channel 12 of the working cavity 11, the heating unit 14 can be a different type of heater, and the refrigerating unit 15 can be a semiconductor refrigerating plate or a refrigerating compressor. By placing the heating unit 14 and the cooling unit 15 in the air flow channel 12, it is advantageous to ensure high efficiency of the temperature regulation of the inner chamber 11.

The refrigeration unit 15 adds a new function to the cryoculture of the incubator apparatus. Compared with a common incubator, the anaerobic incubator can better simulate the original environment of anaerobic microorganisms below room temperature by adding a cold-warm culture function, avoid the occurrence of a stress life process of organisms in a sample due to the action of external harmful environments, and promote the reliability and the authenticity of experimental data. And simultaneously, a new stage of low-temperature study of anaerobic microorganisms and low-temperature biological cytology study is started.

The controller 16 is used as a control core of a temperature control system in the incubator, and is connected with the heating unit 14 and the refrigerating unit 15, and the same temperature measuring unit 13 is used as a control signal feedback source.

Some embodiments of the present application provide an incubator, which uses a controller 16, a heating unit 14 and a cooling unit 15 to form a full-temperature bidirectional temperature control system. The working temperature is set by the controller 16, the system starts the heating unit 14 to perform positive temperature adjustment when the temperature value of the inner cavity 11 is lower than a set value, and starts the refrigeration assembly to perform negative temperature adjustment when the temperature value of the inner cavity 11 is higher than the set value. The positive and negative temperature regulation can be automatically switched to operate, so that the good stability of the temperature environment of the inner cavity 11 is ensured, and the in-situ temperature culture of the sample is ensured, so as to adapt to the experiment requirement under the temperature environment with stable original.

In practical situations, the low-temperature environment of the inner cavity 11 can be realized only by directly setting the working temperature value on the control panel of the controller 16. The need for cumbersome handling of the sample after transfer into an anaerobic bag (or tank) to a cryogenic incubator also eliminates the risk of sample loss due to unsuccessful anaerobic preparation of the anaerobic bag (or tank). When the environmental flora is cultured in a low-temperature state, the probability of obtaining the thermosensitive unknown strain can be remarkably improved, and the construction efficiency of the unknown bacterial library can be effectively improved. The growth condition of the sample can be observed at any time, and the smooth progress of the culture experiment is ensured. Research on psychrophilic anaerobic microorganisms can also be carried out.

In addition, the logic control unit of the bidirectional temperature controller 16 can trigger the electric control unit in real time when receiving the temperature measured value of the inner cavity 11 of the temperature sensor, so as to ensure the high efficiency of temperature regulation. When the measured temperature value of the inner cavity 11 approaches to the set value, the logic control unit of the bidirectional temperature controller 16 is provided with a proper reserved quantity so as to prevent the generation of temperature overshoot and ensure the stability of temperature regulation. The electrical control unit of the bi-directional temperature controller 16 can be made durable, maintaining good accuracy and stability for repeated and continuous control actions, to ensure the durability of temperature control.

In some embodiments, as shown in fig. 4, the chamber wall 101 of the inner chamber 11 may be provided with a mounting hole 111 facing the air flow channel 12, and the cooling unit 15 includes a cooling plate 151, and the cooling plate 151 is mounted on a side of the mounting hole 111 near the inner chamber 11.

The refrigeration plate 151 can be a semiconductor refrigeration plate or a refrigeration compressor refrigeration plate, and is installed on the side wall of the working cavity 11 of the incubator, so that the fixation of the refrigeration plate 151 is facilitated, and the stability of the refrigeration plate 151 in the working process is ensured.

In order to ensure the air tightness of the entire inner chamber 11 at the time of installation, a gasket 112 may be provided between the refrigeration plate 151 and the chamber wall 101 of the inner chamber 11.

In practical situations, at the connection between the refrigeration plate 151 and the cavity wall 101 of the working cavity 11, a sealing material with good heat resistance may be used, so as to prevent the sealing material from being deformed due to heat aging, which results in the air tightness of the cavity 11 being damaged.

In addition, a special heat dissipation element can be provided for the refrigeration plate 151, so that heat generated in the refrigeration process of the refrigeration plate 151 can be effectively transferred, and the refrigeration efficiency of the refrigeration plate 151 in the inner cavity 11 is ensured.

That is, the incubator may further include a heat dissipation system 17, the heat dissipation system 17 being installed at the other side of the installation hole 111 remote from the inner chamber 11.

The heat dissipation system 17 can adopt a heat dissipation fan 171, a heat conduction component 172 or a liquid cooling heat dissipation device, and the heat dissipation effect achieved by the heat dissipation system 17 is beneficial to isolating the adverse effect of the heat generated by the refrigeration unit 15 on the temperature of the inner cavity 11 in the refrigeration process.

In practice, space may be saved when a semiconductor refrigeration board is used as the refrigeration unit 15. As shown in fig. 5 and 6, the semiconductor refrigeration plate includes a substrate 1511 and a guide strip 1512, and a semiconductor element is disposed between the substrates 1511. The refrigerating or heating effect can be realized by changing the polarity of the direct current power supply. And when a refrigeration compressor is used as the refrigeration unit 15, a better refrigeration effect can be achieved. As shown in fig. 7 and 8, the refrigeration compressor includes a compressor 1513, a condenser 1514, an expansion valve 1515, and an evaporator 1516, and a refrigeration effect is achieved by circulation of a refrigerant in a pipe.

In some embodiments, as shown in fig. 9 and 10, the controller 16 and the heating unit 14 may be connected via a first relay 18, where the first relay 18 is used to control the power on and off of the heating unit 14.

The first relay 18 may receive a control signal from the controller 16, and further complete switching between the closed state and the open state, and control the power on/off of the heating unit 14.

In addition, the controller 16 and the refrigerating unit 15 may be connected via a second relay 19, and the second relay 19 is used to control the on-off of the power supply of the refrigerating unit 15.

The second relay 19 may receive a control signal from the controller 16, and further complete switching between the closed state and the open state, and control the power on/off of the refrigeration unit 15.

In actual situations, the vapor chamber 152 may be provided to ensure a cooling area, thereby improving the cooling effect of the cooling unit 15. In addition, when a semiconductor refrigeration board is used as the refrigeration unit 15, the power supply 153 may employ a 24V (volt) switching power supply. When a refrigeration compressor is used as the refrigeration unit 15, the power supply 153 may use 220V ac power. The heating unit 14 may share 220V ac power with the refrigeration compressor.

In some embodiments, as shown in fig. 3, the wall of the inner chamber 11 may also be provided with an operation hole 113, and the air flow passage 12 is formed in a region of the wall of the inner chamber 11 remote from the operation hole 113.

In this way, the separation part arranged in the inner cavity 11 can be far away from the position where the operation hole 113 is located, so that the normal biological sample taking and placing operation of the experimenter is avoided.

In addition, a convection circulation fan 121 may be provided in the gas flow path 12, and the convection circulation fan 121 may circulate the gas in the gas flow path 12.

By convection circulation fan 121, a circulating air flow can be formed in inner chamber 11, ensuring a rapid cooling effect of inner chamber 11. The one-way arrow is used as a schematic in FIG. 3 to illustrate the gas flow path in the incubator cavity 11.

In a practical case, the full-temperature type bidirectional temperature control system of the incubator can be constructed by the following steps:

1. Performing logic control unit program setting of the bidirectional temperature controller 16, editing control logic between a set temperature measured value and a set value, reserving reserved quantity in a temperature critical state, and performing control operation verification of an electric control unit of the bidirectional temperature controller 16;

2. selecting a temperature sensor with high precision and high sensitivity, and performing calibration verification and data communication verification with the bidirectional temperature controller 16;

3. According to the heat transfer function required by the volume of the inner cavity 11 of the incubator, selecting the type of a refrigeration component, using a refrigeration compressor in the incubator with the larger volume of the inner cavity 11, and using a semiconductor refrigeration plate in the incubator with the smaller volume of the inner cavity 11;

4. Selecting a sealing gasket 113 with good heat resistance, and performing high-temperature deformation verification;

5. installing a refrigeration plate and verifying the air tightness;

6. The connection between the temperature sensor, the heater, the refrigeration plate (refrigeration compressor refrigeration plate or semiconductor refrigeration plate) and the bidirectional temperature controller 16 is carried out, and the operation correctness and accuracy verification are carried out;

7. after the quality inspection is finished, the construction of the full-temperature type bidirectional temperature control system is completed.

When in assembly, the electrical components of the incubator are assembled according to the assembly flow. The full-temperature type bidirectional temperature control system is installed in an airtight mode according to the requirements of a process drawing, and circuit installation is completed according to the requirements of a circuit diagram of the full-temperature type bidirectional temperature control system.

In operation, the operating temperature set point is set to the controller 16 and the temperature sensor measures the temperature value in the cavity 11 in real time. And the controller 16 outputs corresponding control instructions according to the comparison result between the measured temperature value and the working temperature set value. If the temperature of the inner cavity 11 is lower than the set value, automatically starting the heater until the measured temperature value of the temperature sensor reaches the set value, and automatically closing the heater; if the temperature of the inner cavity 11 is higher than the set value, the refrigerating unit 15 (semiconductor refrigerating plate or refrigerating compressor) is automatically started until the temperature value measured by the temperature sensor reaches the set value, and the refrigerating assembly is automatically closed.

The positive and negative regulation of the temperature of the inner cavity 11 of the incubator can be automatically switched to operate by adopting a full-temperature type bidirectional temperature control system formed by the controller 16, the heating unit 14 and the refrigerating unit 15. The good stability of the temperature environment of the inner cavity 11 is ensured, and the in-situ temperature culture of the biological sample is ensured.

In addition, the technology of arranging the refrigeration plate in the directional air passage of the inner cavity in the incubator and ensuring the rapid refrigeration effect of the inner cavity through the circulating air flow of the inner cavity can be applied to different specific situations, including but not limited to, a full temperature (or low) anaerobic (or) station, a bi-directional temperature (or low) anaerobic (or) station, a low temperature (or low) anaerobic (or) station, a refrigerated (or low) anaerobic (or) station, a frozen (or low) anaerobic (or) station, an environmental microbiota (or) anaerobic (or low) station, a full temperature (or low) anaerobic (or glove box, a bi-directional temperature (or low) anaerobic (or low) glove box, a low temperature (or low) anaerobic (or) glove box, a refrigerated (or low) anaerobic glove box, a frozen (or low) anaerobic (or) glove box, an environmental microbiota (or) anaerobic (or special) anaerobic glove box, a full temperature (or low) anaerobic (or low) incubator, a bi-directional temperature (or low) anaerobic (or low) incubator, A low temperature (type) anaerobic (or low oxygen) incubator, a refrigerated (type) anaerobic (or low oxygen) incubator, a frozen (type) anaerobic (or low oxygen) incubator, an environmental microbiota (special) anaerobic incubator, an environmental flora (special) anaerobic incubator, a full temperature (type) anaerobic (or low oxygen) incubator, a bidirectional temperature control (type) anaerobic (or low oxygen) incubator, a low temperature (type) anaerobic (or low oxygen) incubator, a refrigerated (type) anaerobic (or low oxygen) incubator, a frozen (type) anaerobic (or low oxygen) incubator, an environmental microbiota (special) anaerobic incubator, an environmental flora (special) anaerobic incubator.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the application and that various changes in form and details may be made therein without departing from the spirit and scope of the application.

Claims (9)

1. The incubator is characterized by comprising an inner cavity and an air flow channel which is formed in the inner cavity through separation, wherein a temperature measuring unit positioned outside the air flow channel is arranged in the inner cavity, a heating unit and a refrigerating unit are respectively arranged on the air flow channel, the incubator is provided with a controller, the controller is respectively connected with the temperature measuring unit, the heating unit and the refrigerating unit, and the controller is used for controlling the opening/closing of the heating unit and the refrigerating unit according to the temperature measuring result of the temperature measuring unit.

2. The incubator of claim 1, wherein the wall of the inner chamber is provided with a mounting hole facing the air flow passage, and the refrigeration unit comprises a refrigeration plate mounted on a side of the mounting hole adjacent to the inner chamber.

3. Incubator according to claim 2, characterized in that a gasket is provided between the refrigeration plate and the cavity wall of the inner cavity.

4. The incubator of claim 2, further comprising a heat dissipation system mounted on the other side of the mounting hole away from the inner chamber.

5. The incubator of claim 1, wherein the controller is connected to the heating unit via a first relay for controlling the power on and off of the heating unit.

6. The incubator of claim 1, wherein the controller is connected to the refrigeration unit via a second relay, the second relay being configured to control the on-off of a power supply to the refrigeration unit.

7. Incubator according to claim 1, characterized in that the refrigeration unit is a compressor or a semiconductor refrigeration plate.

8. Incubator according to claim 1, characterized in that the lumen wall of the inner chamber is further provided with an operating aperture, the gas flow channel being formed in the region of the lumen wall remote from the operating aperture.

9. Incubator according to claim 1, characterized in that a convection circulation fan is arranged in the gas flow channel for circulating gas in the gas flow channel.