JPH05256486A - Clean bench - Google Patents

Abstract

PURPOSE:To culture an animal/vegetable in a germ free state by adding a temperature regulating function to a clean bench and controlling a temperature of an operating space. CONSTITUTION:A filter 6, a fan 7 and an air diffuser 31 are provided in an upper section in a casing 4. A working base 20 is mounted in a lower section, and a space above the base 20 is used as an operating space 5 in a clean bench. The bench has a heater 16 for heating the space 5, a temperature sensor 9a for sensing a temperature of the space 5, and a temperature regulator 9 for setting the temperature of the space 5. The space 5 is controlled to a set temperature by controlling the heater 16 in response to a signal from the sensor 9a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean bench for assembling precision instruments and manufacturing pharmaceutical products in a clean work space formed inside.

[0002]

2. Description of the Related Art Conventionally, this type of clean bench has been used in actual development.
As disclosed in Japanese Patent Publication No. 2-93626, a high-performance (HEPA) filter is used in a work space for use in manufacturing and inspecting fine things such as semiconductors, assembling precision equipment, and experiments in biotechnology. It supplies clean air from which dust and the like have been removed.

In a general structure, a filter, a fan, and a blowing plate serving as an air outlet are attached to the upper part of the casing, and a workbench is attached to the lower part, and the space on the workbench serves as a work space. As described above, the inner surface of the casing is painted.

[0004]

However, since such a clean bench simply keeps the working space aseptic, it is naturally impossible to culture cells of animals or plants.

The present invention has been made in view of the above problems, and a clean bench is provided with a temperature control function to control the temperature of the working space, so that a clean animal or plant can be cultured under aseptic conditions. Intended to provide a bench.

[0006]

According to a first aspect of the present invention, a filter, a fan, and an air outlet are provided in an upper part of a casing, a workbench is attached to a lower part, and a space on the workbench is provided. In a clean bench as a work space, a heating means for heating the work space, a temperature sensor for detecting the temperature of the work space, and a temperature controller for setting the temperature of the work space are provided, and a signal from the temperature sensor is provided. The work space is controlled to a preset temperature by controlling the amount of heat generated by the heating means in accordance with the above.

According to a second aspect of the present invention, in a clean bench in which a filter, a fan and an air outlet are provided in an upper part of a casing and a workbench is attached to a lower part of the casing, the space on the workbench serves as a work space. A heating unit provided on the air suction side of the fan, a temperature sensor for detecting the temperature of the working space, and a temperature controller for setting the temperature of the working space are provided, and the heating is performed according to a signal from the temperature sensor. The work space is controlled to a predetermined set temperature by controlling the heat generation amount of the means.

Further, as described in claim 3, in a clean bench in which a filter, a fan and an air outlet are provided in an upper part of a casing and a workbench is attached to a lower part thereof, and a space on the workbench is used as a work space, A heating unit provided on the workbench, a temperature sensor that detects the temperature of the workbench, and a temperature controller that sets the temperature of the workbench are provided, and the heat of the heating unit is generated according to a signal from the temperature sensor. The workbench is controlled to a predetermined set temperature by controlling the amount.

[0009]

The clean bench of the present invention has the structure of claim 1 and can store the cells of animals and plants in the work space, control the work space to a predetermined temperature, and perform good cell culture in a sterile medium. be able to. As a result, it is possible to culture cells with a simple structure without using a particularly large clean room or a separate culture device.

Further, according to the second aspect of the invention, since the heating means is provided on the air suction side of the fan, it is possible to send warm air of a uniform temperature into the working space by utilizing the diffusion of air by the fan. The work space can be controlled to a good culture environment.

Further, according to the third aspect of the invention, the heater can be provided directly on the workbench to control the temperature of the workbench itself, so that the workbench can have a function as a culture shelf. That is, since the sample cells are usually placed in a flask or the like and placed on a workbench, by appropriately controlling the temperature of this workbench, it is possible to give the cells a highly accurate culture environment. In addition, since the workbench itself is heated, the capacity of the heating means can be small and energy saving can be promoted.

[0012]

Embodiments Next, embodiments will be described with reference to the drawings.

The clean bench 1 has a working space 5 formed inside a casing 4 having an opening 3 at the front, and a high performance (HEPA) filter 6 for adsorbing dust, bacteria and the like on the top of the working space 5. Attach this filter 6
A blower 7 including a sirocco fan 7A and a motor 7B is sequentially installed above the same, a similar pre-filter 8 is sequentially installed above it, and a vertically movable slide glass 2 is installed in the opening 3. ..

On the inner wall of the working space 5 is provided an operation panel 4a having the following operation switches.

Reference numeral 9 denotes an electronic temperature controller, which includes a segment digital display and a temperature setting operation switch,
A signal from the temperature sensor 9a is input, and the temperature inside the work space 5 is set and the temperature is displayed.

Reference numeral 10 denotes a digital timer, which includes a segment digital display section, a timer setting operation switch, and a switch for setting the number of fluorescent lamps 18, which will be described later.
The timer setting operation switch can arbitrarily set the desired day, day of the week, time zone, etc., and the lighting cycle of the fluorescent lamp 18 can be freely set. 11 is a filter alarm, which is the HE
Wind speed sensor 12 provided downstream of PA filter 6
When the magnitude of the signal from the sensor 12 becomes small due to the decrease in the wind speed (0.25 m / s or less), the red LED 13 is turned on to warn the filter 6 of contamination. Incidentally, the green LED 14 is turned on during normal operation. Here, the wind speed sensor is constantly energized to 150
It has a thermistor heated to about ° C, and detects the wind speed by detecting the current value that compensates for the temperature decrease due to ventilation.

A heater switch 15 functions as a power switch for the heater 16 and the temperature controller 9 described later. Reference numeral 17 denotes a fluorescent lamp switch. When this switch is turned on, the digital timer 10 is energized, and the fluorescent lamp 18 is turned on according to the ON / OFF state of the timer setting operation switch and the number setting switch of the fluorescent lamp 18. Control the time and lighting cycle. Here, if the timer of the digital timer 10 is not set, only the fluorescent lamp 18 is turned on.

Reference numeral 19 denotes a blower switch, which controls energization of the blower 7.

The heater 16 has a capacity of 300 W and is housed inside a workbench 20 made of an iron plate which constitutes the casing 4. Further, the temperature sensor 9a is also the workbench 2
It is attached to the inner surface of the top plate of 0.

Reference numeral 21 is a glow tube of the fluorescent lamp 18, reference numeral 22 is a diffuser plate disposed on the ceiling surface of the working space 5, and this diffuser plate is a polystyrene plate formed in a lattice shape.
It prevents the light of No. 8 from diffusing in the horizontal direction and prevents the user from being dazzled. Reference numeral 23 is a gas burner pilot terminal, 24 is a gas burner main flame terminal, 25 is a gas main plug, and 26 is a power outlet.

Reference numeral 27 is a glass window for observation provided on the back surface of the casing 4, and 28 is a gas burner placed in the working space 5 when the user actually conducts an experiment.

In the clean bench constructed as described above, when the machine is simply used as a clean bench as in the conventional case, the fluorescent lamp switch 17 and the blower switch 19 are used.
Only turns on. At this time, the timer 10 is not operated.

Then, the blower 7 is operated and the air is
After passing through the pre-filter 8, the air blower 7 and the filter 6 in this order to be cleaned, the blow-off plate 3 on the lower surface of the filter 6
It is supplied into the working space 5 through the air outlet 31 formed in 0, and flows out from the opening 3 of the slide glass 2. As a result, a clean space is formed in the work space 5, and with the slide glass 2 being raised and opened, the worker can insert his or her hand into the work space to perform fine work operations and culture experiments. ing.

When the apparatus is used for culturing animals or plants, the sample cells are stored in the working space 5, the slide glass 2 is closed, and then the electronic temperature controller 9 is set to a predetermined setting. The temperature is set, the digital timer 10 is set to a predetermined number of fluorescent lamps 18 and a predetermined lighting cycle, and then the heater switch 15, the fluorescent lamp switch 17, and the blower switch 19 are turned on.

As a result, in addition to the operation of the blower 7, the heater 16 heats the workbench 20, and the heat generation amount of the heater 16 is controlled based on the signal from the temperature sensor 9a to keep the workbench 5 at a predetermined temperature. While the temperature is maintained at the set temperature of 1, the fluorescent lamp 18 is turned on at a predetermined illuminance at a predetermined interval, and the sample cells are cultured in an appropriate environment.

The clean bench 1 thus configured
Stores cells of animals and plants in the work space 5, controls the work space 5 to a predetermined temperature by the electronic temperature controller 9 and the digital timer 10, and turns on the fluorescent lamp 18 at a predetermined cycle, or The number of cells can be turned on by intermittently irradiating the cells with the light of the fluorescent lamp 18 in a medium in a sterile state, and the cells can be simply structured without using a large clean room or a separate culture device. Can also be cultured.

According to this embodiment, cells of animals and plants can be stored in the work space 5 and the workbench 20 can be controlled to a predetermined temperature, and cell culture can be satisfactorily performed in a sterile medium. As a result, it is possible to culture cells with a simple structure without using a particularly large clean room or a separate culture device.

Further, by providing the heater 16 directly on the workbench 20 and controlling the temperature of the workbench 20 itself, the workbench 20 can be provided with a function as a culture shelf.
That is, the sample cells are usually placed in a flask or the like and the workbench 20
Since it is placed on the upper side, by appropriately controlling the temperature of the workbench 20, it is possible to give a more accurate culture environment to the cells. In addition, since the workbench 20 itself is heated, the capacity of the heater 16 can be small and energy saving can be promoted.

FIG. 3 shows another embodiment, which is a workbench 2
No. 0 is provided with the heater 16 directly, and the heater 35 is provided on the air suction side of the fan 7. By using diffusion of air by the fan 7, warm air of uniform temperature can be sent to the working space 5. The working space 5 can be controlled to a good culture environment. In this case, the temperature sensor 9a,
9b is attached to both the work table 20 and the blowing plate 30.

Although the heater 16 is provided inside the workbench 20 and the heater 35 is provided on the air suction side of the workbench 20 and the fan 7 in this embodiment, the heaters 16 are provided, but the invention is not limited thereto. Instead, the work space 5 may be heated so that the temperature can be controlled. Of course, the heater 35 may be provided only on the air suction side of the fan 7. However, in this case, the heater 35 needs to have a large capacity.

[0031]

As described above, according to the present invention, cells of animals and plants can be stored in the work space, the work space can be controlled at a predetermined temperature, and the cell culture can be satisfactorily performed in a sterile medium. it can. As a result, it is possible to culture cells with a simple structure without using a particularly large clean room or a separate culture device.

Further, according to the second aspect of the invention, since the heating means is provided on the air suction side of the fan, it is possible to send warm air of a uniform temperature into the working space by utilizing the diffusion of air by the fan. The work space can be controlled to a good culture environment.

Further, according to the third aspect of the invention, the workbench can be provided with a function as a culture shelf by directly providing a heater on the workbench and controlling the temperature of the workbench itself. That is, since the sample cells are usually placed in a flask or the like and placed on a workbench, by appropriately controlling the temperature of this workbench, it is possible to give the cells a highly accurate culture environment. In addition, since the workbench itself is heated, the capacity of the heating means can be small and energy saving can be promoted.

[Brief description of drawings]

FIG. 1 is a side view of a clean bench.

FIG. 2 is a front view of a clean bench.

FIG. 3 is a side view of a clean bench showing another embodiment.

[Explanation of symbols]

 4 Casing 5 Working Space 6 Filter 7 Blower 9 Electronic Temperature Controller 9a, 9b Temperature Sensor 10 Digital Timer 15 Heater Switch 16,35 Heater 20 Workbench 31 Blowout

Claims (3)

[Claims] 1. A clean bench in which a filter, a fan, and an air outlet are provided in an upper part of a casing, and a workbench is attached to a lower part of the casing, and the space on the workbench is used as a work space for heating the work space. Means, a temperature sensor for detecting the temperature of the working space, and a temperature adjustment for setting the temperature of the working space and controlling the heating means according to a signal from the temperature sensor to control the working space to a set temperature. A clean bench characterized by having a container. 2. In a clean bench in which a filter, a fan, and an air outlet are provided in an upper part of a casing and a workbench is attached to a lower part of the casing, and a space above the workbench is used as a work space, an air suction side of the fan is provided. Provided heating means,
A temperature sensor for detecting the temperature of the work space, and a temperature adjustment for setting the temperature of the work space and controlling the heating means according to a signal from the temperature sensor to control the work space to a predetermined set temperature. A clean bench characterized by having a vessel. 3. A clean bench in which a filter, a fan, and an air outlet are provided in an upper part of a casing, and a workbench is attached to a lower part of the casing, and a space above the workbench serves as a work space. Means, a temperature sensor that detects the temperature of the workbench, and a temperature of the workbench are set and the workbench is controlled to a predetermined set temperature by controlling the heating means according to a signal from the temperature sensor. A clean bench, which is equipped with a temperature controller that operates.