JPS61211653A - Ventilating facilities of animal breeding chamer - Google Patents

Abstract

PURPOSE:To remove separation of respective cage racks and to prevent mutual infection and non-uniformity of ventilation by providing a blow-off port through which clean air is supplied in common to all chambers, using rearward spaces of a plurality of cage racks as exhaust chambers, and exhausting the air which has contacted small animals, out of chambers through suction ports provided in the exhaust chambers. CONSTITUTION:Cage racks 12, a pair of which forms a set, are separated into four sets and disposed so that the back surfaces of these racks 12 oppose to each other at suitable intervals. Suction ports 40 are formed at four positions on the floor surface 42 of the animal breeding chamber 10. Partitioning walls 44 are disposed in mating with these positions. Blow-off ports 22 are provided at suitable positions in the ceiling 58 of the animal breeding chamber 10, and clean air 24 which has been air-conditioned is blown off into a common space 56. The clean air blows into the cage racks 12 from the front surface 30 thereof, and is substituted with air within the cages and comes into contact with small animals. Thereafter, the air reaches a rear surface space 54 through a rear surface 32. The air is sucked up from a suction port 40 and rapidly exhausted out of the animal breeding chamber 10.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to ventilation equipment for animal breeding rooms, and is particularly suitable for use in animal breeding rooms where a large number of cage racks housing small animals are arranged in the same room. Regarding.

[Prior art]

Various small-scale animal breeding rooms have been known for breeding small experimental animals.

However, due to rapid advances in bio-related technology in recent years, there is an increasing need to produce large quantities of small animals.
The animal breeding room also has to be large-scale. As a small-scale animal breeding room, for example, as shown in Figure 3 of Japanese Utility Model Publication No. 58-399223, there is a precision one that supplies clean air in a horizontal laminar flow to each cage rack housing small animals. Are known. However, things like this.

Since the animal breeding room containing the cage racks becomes individualized, when applied to a large-scale animal breeding room, the construction cost becomes enormous and the flow line for maintenance and management becomes complicated and inconvenient.

Moreover, the one shown in FIG. 9 is also known. A large number of cage racks 12 are arranged within the animal enclosure 10. The cage rack 12 has a lattice-shaped frame on a vertical plane, and a cage containing a small animal is arranged in each frame partitioned by the lattice. To ventilate the inside of this animal breeding room lO, duct 1
After the temperature and humidity of the outside air taken in from 4 are adjusted by an air conditioner 16, the air is passed through an air purifier 20 with a built-in HEPA filter 18, and then passed through an air outlet 22 provided on the ceiling.
Also, clean air 24 is blown out. Further, air in the chamber 10 is sucked in and exhausted from a suction port 26 provided on the side wall. but,
In such a configuration, the contaminated air comes into contact with the small animals in the cage in the cage rack 12, and the contaminated air moves to the next cage rack 12 and comes into contact with the small animals in other cages.

For this reason.

Pathogens from infected small animals can infect other small animals. The disadvantage is that the probability of so-called cross-infection is extremely high. In addition, since the cage rack and the cage act as ventilation resistance, there is a drawback that air passes through the cage rack, resulting in insufficient ventilation or uneven ventilation within the cage.

FIG. 10 shows an improved version of the conventional example, in which the clean air outlet 22. By devising the arrangement of the suction port 26, the drawbacks of the conventional example shown in FIG. 9 are minimized. However, with this level of innovation, it is difficult to reliably prevent cross-infection and uneven ventilation.

There were limits to ensuring the cleanliness of the room required for an animal breeding room.

In addition, the clean air sent into the room is difficult to reuse because it passes through the cage rack and is mixed with contaminated air.
The drawback was that the entire volume had to be exhausted.

[Problem to be Solved by the Invention 3] As mentioned above, the ventilation equipment for animal breeding rooms according to the prior art does not improve the cleanliness of the room, especially in large scale cases where many cage racks are arranged in the same room. In order to ensure sufficient ventilation, precise ventilation equipment is required for each cage rack, which increases construction costs and increases the tendency for individual cage nitridation to occur in each cage rack. there were. Furthermore, in order to solve this drawback, when the indoor air outlet and suction port were made common, another drawback occurred in that mutual infection and uneven ventilation were caused.

The present invention eliminates the drawbacks of the prior art described above, and eliminates the problem of individual nitrification of each cage rack even in large-scale animal breeding rooms where many cage racks are arranged in the same room, and prevents cross-infection and ventilation. The purpose of the present invention is to provide ventilation equipment for an animal breeding room that can also prevent non-uniformity. Another object of the present invention is to provide ventilation equipment that can separate clean air sent into a room into contaminated air and non-contaminated air, and circulate and use the non-contaminated air.

[Means for solving problems]

The present invention provides a common outlet for supplying clean air to an animal breeding room in which a plurality of cage racks are arranged in the same room, and also provides space between the back surfaces of the plurality of cage racks. The cage racks are arranged so that they face each other with their backs facing each other, and the surfaces other than the back surfaces of the rear spaces of the cage racks facing each other are isolated from the common space of the animal breeding room, and this rear space is used as an exhaust chamber. [Embodiment] An embodiment of the present invention will be described below with reference to the drawings. 1st
A first embodiment of the present invention is shown in the figures through FIG.

In the figure, parts with the same reference numerals as in FIG. 9 mean the same structure. In Figure 1, there are 8
There are cage racks. The planar arrangement is shown in FIG. As shown in FIG. 3, the cage rack 12 has a lattice-like frame 14 on a vertical plane, and each of the cage racks 12 is arranged so that a cage can be stored in each section. Namely.

Cages containing small animals are stored in each frame.

A small animal is kept in this cage. In the present invention,
In this cage rack 12, the surface facing the common space of the animal breeding room is defined as a front surface 30, and the surface on the back thereof is conveniently defined as a rear surface 32.

In addition, the other surfaces are respectively the upper surface 34. Side 36. Lower surface 38
That's what it means. The cage rack 12 is open at least on the front side 30 and the back side 32, and has a top side 34 and a side 36. Bottom surface 3
8 is opened or sealed as necessary. The eight cage racks 12 are separated into four groups, two cage racks in each group, and the two cage racks 12 in each group are arranged so that their back faces face each other with a distance between them. The bed 42 of the animal breeding room 100 in which this cage rack 12 is arranged has four suction ports 40 in advance.
A fourth suction port 40 is provided in accordance with the position of this suction port 40.
A partition wall 44 as shown in the figure is provided. This partition wall 44 is mainly composed of a ceiling 46 and two opposing side walls 48, and the other sides adjacent to the side walls 48 are open. Further, at least one side wall 48 has a
An entrance/exit door 50 is provided in the center. In this example,
Insert the cage rack from the open side of the partition wall 44 and place the cage rack 1 at the position 52 surrounded by the two-point chain in FIG.
Place 2. Therefore, the cage rack 12 is placed between the rear surfaces 3 of the two cage racks with the suction port 40 sandwiched between them.
2 are placed facing each other. This opposing back surface 42. is provided with a 32° suction port 40. Ceiling 46 of partition wall 44. A space surrounded by the side walls 48 forms a back space 54. As is clear from the above explanation,
In this back space, the back 32 is the front 3 of the cage rack 12.
The floor surface 42.0 communicates with the common space 56 of the animal breeding room 10 via It is separated from the common space 56 by a partition wall 44 .

Hereinafter, referring back to FIG. 1, other configurations and operating conditions of this embodiment will be explained. Air outlets 22 are provided at appropriate locations on the ceiling 58 of the animal breeding room 10, and air-conditioned clean air 2 is provided.
4 into the common space 56.

This clean air 24 flows into the cage rack 12 from the front face 30 of the cage rack 12 separated into two sets and four sets, replaces the air inside the cages arranged in the cage rack 12, and replaces the air inside the cages arranged in the cage racks 12. After coming into contact with the cage rack 12, it may be the back surface 32.

The rear space 54 is reached. The air in the back space 54 is fed through the suction port 4
0 and immediately discharged to the outside of the animal breeding room 10.

According to this embodiment, there are the following first-order effects.

■ Clean air outlet is common to all rooms.

The configuration of the air outlet is simple.

■ The front of the cage racks all face the common space of the animal breeding room, so there is no need for individual cage racks. Therefore, the main maintenance of the cage rack, such as loading and unloading cages, feeding small animals in cages, and daily inspection and maintenance can be performed from the side of the spacious common space.

■ Clean air flows from the front of the cage rack through the back.
Since the air is discharged from the exhaust chamber, which is the back space, air circulation is unidirectional, and cross-infection can be reliably prevented. In addition, ventilation can be uniformly performed.

■ Since maintenance personnel can enter and leave the exhaust room, which is the rear space, through the entrance/exit door, work that is highly contaminated can be performed in this exhaust room. Since the exhaust chamber has a lower pressure than the common space of the animal breeding room, pollutants associated with the 9 operations will not diffuse into the common space.

FIG. 5 shows a modification of the partition wall according to the first embodiment. The partition wall 60 according to this example has a ceiling 62. Side wall 64. It has an entrance/exit door 66. In Kure, the air inlet 68 is provided on the side of the ceiling 62, and the duct 70
Maybe exhaust. According to this partition wall 60, there is no need to provide a suction port at a fixed position on the floor surface 42 of the animal breeding room 10.

Therefore, this partition wall 60 can be moved to any position within the animal breeding room 10 to configure ventilation equipment. In this case, the duct 70 and an exhaust duct at a fixed position (not shown) provided on the ceiling surface 58 of the animal breeding room may be connected by a flexible intermediate duct. Note that the ceiling and side walls of the partition wall do not necessarily need to completely cover the top surface 34 and side surfaces 36 of the cage rack 12. When the top and side surfaces of the cage rack 12 have a sealed structure, as shown in FIG. 6, the ceiling 74 of the partition wall 72.
The side wall 76 may be arranged only in a portion corresponding to the side periphery of the back space. In this case.

The cage rack 12 is placed horizontally at the position surrounded by the two-dot chain line in the figure.

FIG. 7 shows a second embodiment of the present invention. This figure is a plan view showing the arrangement of the cable rack. In this embodiment, one side of the cage rack 12 is connected to the side wall 78 of the animal breeding room 10.
A suction port 80 is provided in the side wall 78.

According to this example.

The side wall on one side of the partition wall can be omitted, and the ratio of the total projected area of the cage racks to the floor area of the animal breeding room 100 can be increased due to the arrangement characteristics of the cage racks 12.

FIG. 8 shows a third embodiment of the present invention. In this embodiment, the contaminated air in the back space 54 is exhausted from the suction port 84 provided in the ceiling 82 of the partition wall, and is exhausted to the outside of the animal breeding room 10. Furthermore, a ring air vent 86 is provided at a suitable location on the side wall 78 and floor surface 42 of the animal breeding room IO, and the common space 56 of the animal breeding room
The air is sucked in and returned to the air conditioner 16. The air sucked in from the ring air port 86 does not pass through the cage rack 12, and is relatively clean. Moreover, the air is conditioned. Therefore, even if the recycled air 88 is used for circulation, the load on the air conditioner 16 and the load on the air cleaner 20 do not increase significantly. Therefore, the ventilation frequency of the animal breeding room IO can be freely adjusted to maintain the indoor temperature, humidity, and cleanliness at desired values. In this way, the clean air supplied from the outlet is separated into two systems: contaminated air that goes through the cage rack, and relatively clean air that does not go through the cage rack, and the contaminated air is exhausted and relatively clean air is released. Since the air is recirculated as return air, the load on the cold heat source and HEPA filter can be significantly reduced compared to, for example, when all the air required for ventilation is taken in from outside air for air conditioning or purification. In the conventional ventilation equipment shown in FIGS. 9 and 10 above, the clean air sent into the animal breeding room 10 is contaminated on average, making it difficult to reuse.

In animal breeding rooms, the amount of outside air taken in (in other words, the amount of exhaust air) is required to ensure the total ventilation required from the perspective of air conditioning and purification, and the oxygen concentration in the air necessary for animal breeding. There is a difference between.

Usually, the former is overwhelmingly common. Therefore, it is extremely effective to effectively separate the return air and exhaust into two systems according to their cleanliness and reuse the return air, as in this embodiment. Furthermore, since exhaust gas is accompanied by a bad odor, it is usually necessary to perform deodorization treatment. According to this embodiment, since the exhaust amount can be suppressed to the necessary minimum, the scale of the deodorizing treatment apparatus can be made small.

〔Effect of the invention〕

As described above, according to the present invention, even in an animal breeding room where a large number of cage racks are arranged in the same room, there is no need to provide separate ventilation equipment for each cage rack, and ventilation equipment can be removed from the common space in the room. Maintenance and management of cages and small animals housed in cages becomes easy. Furthermore, according to the present invention, ventilation is possible without the risk of cross-infection, and sufficient and uniform ventilation can be achieved for the cage. In addition, separate from the exhaust system, it is easy to add a return air system that selectively separates and recirculates only the clean air in the room. Management items can be maintained in a well-balanced and economical manner.

[Brief explanation of drawings]

FIG. 1 is a side view showing the ventilation system of the first embodiment of the present invention;
FIG. 2 is a plan view showing the arrangement of the cage ranks in the animal breeding room according to the first embodiment, FIG. 3 is a perspective view illustrating the schematic structure of the cage rack according to the present invention, and FIG. FIG. 5 is a perspective view showing a modified example of the partition wall, FIG. 6 is a perspective view showing another modified example of the partition wall, and FIG. 7 is a perspective view showing the structure of the partition wall and the suction port. FIG. 8 is a plan view showing a second embodiment of the present invention, FIG. 8 is a side view showing a third embodiment of the present invention, and FIGS. 9 and 10 are side views showing a ventilation system according to the prior art. 10...Animal breeding room, 12...Cage rack 16...Air conditioner, 20...Air cleaner 2
2...Blowout port, 40...Suction port 54...
・Back space, 56... common space. Figure 1 400 [Local mouth Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 9 Figure 10

Claims (2)

[Claims] (1) A blower for supplying clean air to an animal breeding room in which multiple cage racks are arranged in the same room, each with grid-like frames on the vertical plane and cages containing small animals placed in each frame. In addition to providing a common exit for all rooms, the plurality of cage racks are arranged so that their back faces face each other with a gap between them, and a surface other than the back face of the back space of the cage racks with their back faces facing each other is provided. is isolated from the common space of the animal breeding room, this rear space is used as an exhaust chamber, and the air that has come into contact with the small animal is discharged to the outside of the animal breeding room from a suction port provided at an appropriate location in this exhaust chamber. Features: Ventilation equipment for animal breeding rooms. (2) Supplying clean, air-conditioned air to an animal breeding room in which multiple cage racks are installed in the same room, each with grid-like frames on the vertical plane and cages containing small animals placed in each frame. In addition to providing a common air outlet for all rooms, the plurality of cage racks are arranged so that their back faces face each other with a gap between them, and the cage racks are arranged so that their back faces face each other with a gap between them. The surface of the small animal is isolated from the common space of the animal breeding room, this back space is used as an exhaust chamber, and the air that has come into contact with the small animal is discharged outside the animal breeding room from a suction port provided at a suitable location in the exhaust chamber, and the An animal breeding room characterized in that a return air vent is provided at a position facing a common space of the animal breeding room, and air from the common space is sucked in from the air return vent and circulated and used as the air-conditioned clean air. Ventilating facilities.