JPH0148723B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a laboratory animal breeding room in which a large number of animals are kept in multiple racks.

(Prior Art) A large number of animals are kept in a room used for breeding experimental animals, and this room is required to have uniform environmental conditions such as temperature, humidity, and air velocity.

For this reason, rooms are constantly air-conditioned.

Furthermore, individual experimental animals are required to be free from influences from other animals.

For this reason, the multi-tiered racks provided in the room are divided into grid-like sections using shielding plates, and the front and rear of the grid-like sections are open to serve as vents for ventilation. Cages containing animals are then stored within that compartment.

Therefore, the airflow due to ventilation flows to one side of the open side of the lattice compartment and is not influenced by other animals.

However, depending on the direction of air flow, the ventilation flow may circulate within the room or stagnate in a part of the room, and the gas that has passed through the breeding cage may subsequently pass through other cages, i.e. , after passing through a cage once, it may pass through another cage again, so it cannot be said to be suitable for a laboratory.

Therefore, it must be ensured that there is a constant supply of fresh air in all cages.

To explain a conventional laboratory based on FIGS. 13 and 14, there are racks c on both sides b and b of chamber a.
An air outlet e parallel to the rack c is provided in the center of the ceiling d, and suction ports f, f are provided on both side walls b, b.

In this case, the air blown out from the air outlet e flows toward the floor g, is divided to both sides, rises along the front surface of the rack c, passes through the rack c as appropriate, and is discharged from the suction port f. However, there is an upward flow in front of Rack C, and the gas is warmed by the body temperature of the animals kept and rises, so the flow rate passing through the upper and lower stages of Rack C is not constant, and the flow rate increases. All of the flow passes through the rack and is not discharged, passing through the top of the rack c and reaching the ceiling d.
, there is gas that circulates and is attracted by the blowout flow, and the amount of upward flow is different at the bottom and top of rack c. It has been experimentally confirmed that the water flows back into the room once again.

Therefore, the applicant of the present invention filed Japanese Patent Application No. 59-40843.
As stated in the issue, air conditioning outlets and suction ports that open toward the floor are installed on the ceiling of the breeding room at appropriate intervals, and the floor space between these outlets and suction ports is installed on the ceiling of the breeding room. A rack having a plurality of shelves parallel to the surface is erected, and an opening adjustment lid for adjusting the degree of opening is provided at each stage opening on the inflow side or outflow side of the airflow passing between the shelves of the rack. We have developed a laboratory animal breeding room with the following features.

(Problems to be Solved by the Invention) However, in such a breeding room, the opening adjustment lid is easily installed, and a ceiling board or end board is installed between the periphery of the rack and the room wall, so it is difficult to clean the rack. It is difficult to carry the rack outside when cleaning or disinfecting the rack, and since there is an adjustable lid, it is difficult to wash and disinfect the rack; There were problems such as the need to adjust the degree of opening each time, which was very time-consuming.

The present invention has been made in view of these problems, and it is an object of the present invention to provide a laboratory animal breeding room in which the racks can be handled easily and the racks can be cleaned and disinfected smoothly.

(Means for Solving the Problems) As shown in the drawings corresponding to the embodiments, the experimental animal breeding room of the present invention is equipped with a blower outlet and a suction port for air conditioning. A partition wall is erected between the side wall of the rearing chamber between the outlet and the suction port, and the rearing chamber is divided into a side chamber and a work chamber by vertically providing a partition wall with adjustable openings at desired intervals in the vertical direction. , a rack having a plurality of steps and whose surface facing the side chamber or the working chamber is completely open is formed separately from the partition wall, and this rack is placed in either the side chamber or the working chamber. The rack is characterized in that it is arranged upright and its open side is removably attached to the partition wall, and each step of the rack is communicated with the opening of the partition wall.

(Function) During animal breeding, when fresh air is supplied into the breeding room from the air outlet 6, the air passes through each stage of the rack 10 evenly through the slits 9 of the partition wall 8, and then returns into the rack. It is discharged to the outside from the suction port 7 without flowing in.

When cleaning or disinfecting racks, use the slit 9
The rack 10 alone is removed separately from the partition wall 8, and transported outside for cleaning and disinfection. At this time, even if multiple racks are installed side by side and one of them is removed, there will be no change in the air flow passing through the opening in the partition wall in the removed part, and the air flow will be under the same conditions as the installed rack. It does not have any negative impact on breeding in other racks.

(Example) An example of the present invention will be described based on FIGS. 1 to 7.

Reference numeral 1 is the laboratory animal breeding room, 2 is the ceiling, 3 is the side wall, 4 is the floor, and 5 is the gable wall. Fresh air sent from the air conditioner to both walls of the ceiling 2 is connected to the breeding room 1. The air outlets 6, 6 that flow into the inner wall are connected to both gable walls 5,
It has a long and narrow opening extending over 5.

Further, in the center of the ceiling 2, a suction port 7 through which air is discharged from the rearing room 1 is opened in an elongated manner extending across both the gable walls 5, 5.

Reference numerals 8 and 8 denote partition walls, which are installed on the floor 4 between the air outlets 6, 6 and the suction port 7, close to the air outlet 6 side, and parallel to the air outlet 6 and the suction port 7. . As shown in FIGS. 3 and 4, this partition wall 8 is provided with a plurality of slits 9 at desired intervals in the vertical direction, and these slits 9 are elongated and open in the horizontal direction. In addition, the breeding room 1 is divided into a central room 13 where researchers and breeders work, and a side room 14 where cleaning and disinfection are performed by the partition wall 8. While the mouth 7 is exposed, the air outlet 6 is exposed above the side chamber 14. This partition wall 8 has columns 21 erected at appropriate intervals between the ceiling 2 and the floor 4 in parallel with the side walls 4, 4, and the upper and lower ends of these columns 21 are connected to the ceiling 2 with bolts 22 or the like. It is removably fixed to the floor 4 and is provided between adjacent pillars erected in this way.

That is, a plurality of blind plates 23 having a length that can be installed between adjacent pillars and having various widths in the vertical direction are placed horizontally at appropriate intervals between the vertically adjacent blind plates. The partition wall 8 is constructed by sequentially constructing the slits 9 between the pillars and removably fixing them to the pillars 21 with screws or the like at both ends. At this time, the slits 9, 9...9 provided in the vertical direction are provided so as to be approximately equal to the interval between the shelves (tiers) of the rack 10, and the opening width of the slit 9 is the vertical width dimension of the blind plate 23. This can be changed by arbitrarily adjusting the mounting position with respect to the pillar using the screws 25 and the like.

The rack 10 and the blind plate 23 are arranged so that the back side of the rack 10 is brought into close contact with the blind plate 23, or the rack 10 is
An elastic plate 26 attached to a pillar 21 or a blind plate 23 is placed in close contact with the periphery of the cylinder to prevent airflow from leaking.

Further, as shown in FIGS. 5 to 9, the partition wall 8
An opening adjustment lid 15 may be provided for adjusting the opening degree of the slit 9.

That is, in the case shown in FIGS. 5 and 6, an opening adjustment lid 15 made of an elongated plate is brought into close contact with the lower end or upper end of the blind plate 23, and a plurality of longitudinal holes 27 formed in the adjustment lid 15 are inserted into the opening adjustment lid 15. The vertical movement can be adjusted by screwing the bolt 28 into the blind plate 23, and the one shown in FIGS. The opening adjusting lid 15 was installed between the plates, and the opening adjusting lid 15 was attached to the blind plate using long holes 27 and bolts 28 in the same way as described above so as to be able to move up and down freely, and holes were drilled in the center of the opening adjusting lid 15 at appropriate intervals. The degree of opening of the large number of holes 29 can be adjusted by adjusting the protruding length of the edge of the blind plate 23.

Further, FIG. 9 shows a plate-shaped opening adjustment lid 15 having a vertical width larger than the width of the slit 9, which is attached to the opposing edges of the blind plates 23, 23 by an adjustment bolt 38, with an appropriate distance from the slit 9. The gap between the opening adjustment lid 15 and the blind plate 23 can be adjusted using bolts 38.

Furthermore, instead of such an opening adjustment lid 15, the slit 9 may be closed by stacking nets with different coarseness, and the degree of opening may be adjusted by the number of stacked nets.

As shown in FIG. 10, the rack 10 is divided horizontally by shelf boards 10b forming a plurality of tiers 10a, and each tier 10a has a vertical partition between the upper and lower shelves. A plurality of compartments 11 are formed by fixing the plate 10c.

A cage 12 made of wire mesh or the like for laboratory animals is housed in this compartment 11, and the front and rear of each compartment 11,
That is, the surface facing the central chamber 13 and side chambers 14 is completely open.

With this configuration, fresh air for air conditioning enters the side chamber 14 of the rearing room 1 from the air conditioning equipment through the outlets 6, 6, and this air has a constant flow rate and is cooled below room temperature. Therefore, it flows towards the floor 4 below.

However, in the side chamber 14, only the slit 9 whose opening ratio is adjusted by the opening adjustment lid 15 attached to the upper part between the shelves on the rear side of the partition walls 8, 8 is opened. flow easy 1
Flows into 0.

The air passing through the rack 10 is warmed by the animal's body temperature, and since the suction port 7 is provided on the ceiling, the air flows upward and is discharged from the suction port 7.

Furthermore, since the air outlet 6 and the suction port 7 are provided across the opposing gable walls, the air flow becomes a plane flow.
There is no mixing in the depth direction of the figure.

In this way, no circulating flow occurs anywhere in the rearing room 1, and air flows uniformly from the side chambers 14 to the central chamber 13, so that air that has come into contact with an animal will not come into contact with other animals again. Furthermore, animals are not influenced by caretakers or researchers in the central room 13.

The one shown in FIG. 11 shows a modification in which the air outlets 6, 6 and the suction port 7 are reversed in the breeding room explained in FIGS. The air outlet 6 is provided with an air outlet 6, and suction ports 7, 7 facing a side chamber 14 are provided on both sides of the ceiling.

In this case, the fresh and cold air coming out of the outlet 6 flows toward the center of the floor 4, and is divided toward the both side walls 3 at the lower part. The divided air is further divided into an upward flow along the front surface of the racks 10, 10 and an air flow that flows into the rack 10.

There is no change in temperature in the case of upward flow, but floor 4
The flow rate decreases as the flow rate increases as the flow rate increases.

On the other hand, the air entering the rack 10 is warmed by the animal's body temperature, and since the slits 9 of the partition wall 8 on the rear surface of the rack are narrower than the front surface of the rack 10, the air flowing into the rack 10 has a flow rate at the slits 9 of the partition wall 8. The liquid increases in volume, enters the side chamber 14, rises to the suction port 7 of the ceiling 2, and is discharged. At this time, if the degree of opening of the slit in the partition wall 8 is made narrower toward the lower slit using the opening adjustment lid 15, air will be less likely to come out in the lower part, and the flow rate of the upward flow in the central chamber 13 will be reduced. This makes it difficult for the flow rate to decrease, making it possible to increase the upward flow rate.

Therefore, the flow rate of air passing through the rack 10 from the upper stage to the lower stage can be made substantially equal. Therefore, air that has entered the lower stage no longer flows backwards and enters the upper stage, unlike in the conventional case. This is air outlet 6
Blowout flow rate from the bottom and slits from the bottom to the top 9
This can be done by adjusting both the opening degree and the opening degree.

In addition, in the above two embodiments, Rack 1
Although the rack 10 is installed on the side of the central chamber 13 with respect to the partition wall 8, the rack 10 may also be installed on the front surface of the partition wall 8. The air flow state in this case is opposite to that described in the above two examples. Although the slits 9 are shown opening at the lower part of each stage of the rack 10, they may be opened at the upper part or the upper and lower parts.In short, any means can be used as long as the opening amount can be adjusted. The opening adjustment lid 15 may be the same.

In addition, in the above explanation, the case where the indoor incoming air is lower than the indoor temperature was explained, but it can also be applied to the case where air with a temperature higher than the indoor temperature is supplied. In this case, the higher the slit is, the more By forming the rack narrowly, air can uniformly flow into the rack.

(Effects of the Invention) As described above, the present invention provides an adjustable opening between the side wall of the breeding room between the air outlet and the suction port in a laboratory animal breeding room provided with an air conditioning outlet and a suction port. The breeding room is divided into a side room and a work room by erecting partition walls with vertically spaced partition walls arranged at desired intervals,
Furthermore, a rack having a plurality of steps and whose surface facing the side chamber or the working chamber is completely open is formed separately from the partition wall, and this rack is attached to either the side chamber or the working chamber. The rack is installed vertically, and its open side is removably attached to the partition wall, and each step of the rack is configured to communicate with the opening in the partition wall. Since it is formed separately from the partition wall that has an opening in the rack, when cleaning or disinfecting the rack, only the rack can be removed from the partition wall and carried outside. Since the rack is completely open on both sides facing the side room or work room and only has a stepped section, it is easy to wash and disinfect the rack. By bringing the rack into the room again and placing it in close contact with the partition wall, the open end of each rack can be communicated with each opening in the partition wall, allowing approximately equal airflow to flow through each rack. It is possible.

In addition, when multiple racks are detachably installed on a partition wall, even if any rack is removed from the partition wall for cleaning or disinfection, it cannot be connected to other racks through the opening in the partition wall. Since airflow under the same conditions does not pass through and change the breeding environment, animals can be kept in other racks without any problems.

Furthermore, the openings in the partition walls are configured so that the degree of opening can be adjusted, making it possible to easily adjust the flow rate of the airflow in each stage to prevent backflow, etc. This can eliminate air stagnation indoors and prevent infection among animals.

Further, since the rearing room is divided into a side room and a work room through a partition wall, a worker can enter the room and perform work.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a simplified plan view thereof, Fig. 2 is a simplified sectional view, Fig. 3 is a partial front view of a partition wall, and Fig. 4 shows its installed state. 5 is a simplified vertical side view showing the slit opening adjustment means, FIG. 6 is a front view thereof, FIG. 7 is a simplified vertical side view of a modification of the adjustment means, and FIG. 8 is a front view thereof. Figure 9 is a simplified vertical cross-sectional side view showing yet another modification, Figure 10 is a front view of a rack housing a cage, and Figures 11 and 12 are simplified vertical cross-sectional views showing other embodiments of the present invention. Figure, 1st
FIG. 3 is a simplified plan view showing a conventional example, and FIG. 14 is a simplified vertical sectional side view thereof. 1...breeding room, 2...ceiling, 3...side wall, 4...
...Floor, 6...Air outlet, 7...Suction port, 8...Partition wall, 9...Slit, 10...Rack, 10a...
...Stepped portion, 15...Opening adjustment lid.

Claims (1)

[Scope of Claims] 1. In a laboratory animal breeding room provided with an air conditioning outlet and a suction port, openings with adjustable opening degrees are arranged vertically at desired intervals between the side wall of the breeding room between the outlet and the suction port. The breeding room is divided into a side room and a work room by erecting partition walls for each room, and the rear room has a plurality of steps and the side facing the side room or the work room is completely open. A rack is formed separately from the partition wall, and this rack is erected in either the side room or the work room, and its open side is removably attached to the partition wall, and each step of the rack is partitioned. A laboratory animal breeding room characterized by being configured to communicate with an opening in a wall. 2. The laboratory animal breeding room according to claim 1, wherein the openings in the partition wall are configured to be adjustable so that the openings are opened at desired height positions in each stage.