JP2013099296A - Apparatus for euthanasia of animal and method for euthanizing animal in disposal chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for euthanasia of animals capable of suitably selecting three types of disposing methods by: only using carbon dioxide, only using anesthetic gas, and using both carbon dioxide and anesthetic gas, when euthanizing an animal depending on the animal to be subjected.SOLUTION: The apparatus for euthanasia of animals includes: a disposal chamber (12); a heater for disposal chamber for heating the disposal chamber (12); a carbon dioxide cylinder (4) for supplying the carbon dioxide to the disposal chamber (12); a carburetor (C) for supplying anesthetic gas to the disposal chamber (12); an air supply passage (33) for supplying air to the disposal chamber (12); and a control unit for controlling supply of the carbon dioxide, the anesthetic gas, and the air. The control unit includes a mode for supplying only the carbon dioxide to the disposal chamber (12), a mode for supplying the anesthetic gas and subsequently supplying the carbon dioxide to the disposal chamber (12); and a mode for supplying only the anesthetic gas to the disposal chamber (12).

Description

  The present invention relates to an animal euthanasia disposal apparatus and a method for euthanizing an animal in a disposal chamber. More specifically, when euthanizing animals such as wild dogs, for example, depending on the target animal, there are three types of disposal: disposal using only anesthetic gas, disposal using only carbon dioxide gas, or disposal using a combination of anesthetic gas and carbon dioxide gas. The present invention relates to a method that can appropriately select a method and can flexibly cope with a change in disposal method.

  When euthanizing animals such as wild dogs in a local government, disposal by carbon dioxide gas, injection of drugs, etc., or mixing drugs with food is generally adopted. Among these, the method using the above-mentioned chemicals has problems in terms of workability, hygiene, or worker safety, so there are local governments that only dispose of carbon dioxide gas, while disposal with carbon dioxide gas is an animal. Some local governments do not dispose of carbon dioxide gas for reasons of pain, dispose of them by injection using drugs, etc., or dispose of anesthetic gas although it is expensive, and various methods are adopted by local governments. ing.

  Furthermore, depending on the type of animal to be disposed of, alien species (such as raccoons and other animals that have been kept as pets, etc.) may be disposed of with low-cost carbon dioxide gas depending on the local government. There are also changes.

  Thus, there are various disposal methods of the animal euthanasia disposal apparatus. For example, as an apparatus for performing disposal using carbon dioxide gas, there is an animal disposal apparatus disclosed in Patent Document 1 proposed by the present inventor. In addition, an apparatus that disposes using anesthetic gas and carbon dioxide gas in combination, such as an animal euthanasia apparatus disclosed in Patent Document 2, is also disclosed.

  The “animal disposal apparatus” described in Patent Document 1 includes a gas supply apparatus, an animal disposal apparatus, and a gas purification apparatus. Small animals such as dogs and cats housed in animal disposal machines are euthanized using the carbon dioxide supplied from the gas supply device, and the carbon dioxide is purified by the gas purification device and then reused. Is to be able to be reused effectively without being discharged into the atmosphere.

  In addition, the “animal euthanasia apparatus” described in Patent Document 2 accommodates an animal in a disposal chamber of a predetermined volume, supplies anesthesia gas vaporized at a predetermined speed by an anesthetic liquid vaporizer into the disposal chamber, An euthanasia device for animals that anesthetizes an animal by inhaling anesthesia gas and then euthanizes the animal by placing it in an oxygen deficient state. The anesthetic is efficiently applied to each target animal. By using a suitable volume, it is possible to minimize the pain before the animal loses consciousness and the suffering at the time of sacrifice.

JP 2003-38090 A

JP 2007-60925 A

However, Patent Document 1 and Patent Document 2 have the following problems.
That is, the conventional disposal apparatus is functionally dedicated and can only be euthanized by a specific method. Therefore, for example, when the disposal method is changed depending on the animal to be disposed of, it cannot be handled. In addition, in order to cope with such a change in disposal method, it is necessary to introduce a dedicated device with a different disposal method, and the equipment cost becomes high. There was a problem.

  Moreover, when using an anesthetic with a disposal device, in order to dispose of an animal rapidly, when producing | generating an anesthetic gas, it is necessary to raise to the required density | concentration rapidly, averaging the density | concentration of an anesthetic gas to the whole. However, the anesthetic may condense and become liquefied if the temperature is not controlled while maintaining the concentration corresponding to the disposal of the animal.

  However, in the animal euthanasia apparatus described in Patent Document 2, in addition to the heater not in the disposal chamber, the atmosphere in the disposal chamber is simply agitated with a fan, and anesthesia gas is supplied in the disposal chamber and the supply path. Management to maintain the required concentration and temperature is difficult. For this reason, there has been a problem that the anesthetic becomes liquefied and adheres to the route including the disposal chamber, whereby the concentration of the anesthetic gas is lowered and the animal is not euthanized.

(Object of the present invention)
In the present invention, when euthanizing an animal, for example, depending on the target animal, three types of disposal methods are appropriately used: disposal using only carbon dioxide gas, disposal using only anesthetic gas, or disposal using a combination of anesthetic gas and carbon dioxide gas. An object of the present invention is to provide an animal euthanasia disposal apparatus that can be selected and flexibly responded to changes in disposal methods, and a method for euthanizing animals in a disposal room.

  In addition to the above-mentioned object, the present invention can average the concentration of the anesthetic gas in the disposal chamber and in the route with the required concentration corresponding to the disposal of the animal so that the animal can be disposed of promptly. In other words, the anesthetic gas can be maintained within a required temperature range so that the anesthetic (anesthetic) in the anesthetic gas can be prevented from condensing in the disposal chamber and in the route.

Means taken by the present invention to solve the above problems are as follows.
(1) The present invention
An animal euthanasia device,
A disposal room,
A disposal chamber heater for heating the disposal chamber;
A carbon dioxide supply section for supplying carbon dioxide to the disposal chamber;
An anesthetic gas supply unit for supplying anesthetic gas to the disposal chamber;
An air supply unit for supplying air to the disposal chamber;
Control means for controlling supply of the carbon dioxide gas, anesthetic gas, and air;
With
The control means includes
A mode in which only carbon dioxide gas is supplied to the disposal chamber;
A mode in which anesthetic gas is supplied to the disposal chamber and then carbon dioxide gas is supplied;
A mode of supplying only anesthetic gas to the disposal chamber,
Including control of the
Animal euthanasia device.

(2) The present invention
The disposal chamber heater heats the entire inner surface of the disposal chamber.
The animal euthanasia disposal apparatus according to (1).

(3) The present invention
Circulating means for circulating the anesthetic gas in the disposal chamber and the supply path to average the concentration of the anesthetic gas, and the temperature of the anesthetic gas circulating in the disposal chamber and the supply path at a temperature that does not condense in the circulation path including the disposal chamber. Temperature maintaining means including a heater for the disposal chamber to maintain in the range,
The animal euthanasia disposal apparatus according to (1) or (2).

(4) The present invention
It is equipped with an animal storage cage that contains animals to be disposed of and puts them in and out of the disposal room.
The animal euthanasia disposal apparatus according to (1), (2) or (3).

(5) The present invention
It is equipped with a means for connecting an anesthetic agent recovery device that takes out the used anesthetic gas from the disposal chamber and recovers the anesthetic agent from the anesthetic gas.
The animal euthanasia disposal apparatus according to (1), (2), (3) or (4).

(6) The present invention
A carbon dioxide gas supply unit, an anesthetic gas supply unit, an air supply unit and control means are provided on the disposal chamber, and the carbon dioxide gas, the anesthetic gas and air are sent from the ceiling of the disposal chamber to the disposal chamber.
The animal euthanasia disposal apparatus according to (1), (2), (3), (4) or (5).

(7) The present invention
A method of euthanizing an animal in a disposal room,
Select one of the following methods: using carbon dioxide in the disposal chamber, using anesthetic gas in the disposal chamber, or using carbon dioxide and anesthetic gas in the disposal chamber,
When anesthetic gas is used, the anesthetic gas is circulated in the disposal chamber and the supply path to average the concentration, and the anesthetic gas does not condense in the circulation path including the disposal chamber in cooperation with the disposal chamber heater. Maintain in the temperature range,
When using carbon dioxide and anesthesia gas, use carbon dioxide after the animal's consciousness has been lost using anesthetic gas first,
This is a method of euthanizing the animal in the disposal room.

(Function)
The operation of the animal euthanasia disposal apparatus according to the present invention will be described.
First, animals to be euthanized are accommodated in the disposal room of the animal euthanasia disposal apparatus.
When the animal is disposed of only with carbon dioxide, carbon dioxide gas having a required concentration is supplied from the carbon dioxide supply unit into the disposal chamber through the supply path under the control of the control means, and the animal in the disposal chamber is euthanized. .

  When disposing of anesthetic gas and carbon dioxide in combination, first, anesthesia gas at the required concentration is supplied from the anesthetic gas supply unit into the disposal chamber through the supply channel under the control of the control means. After that, carbon dioxide gas having a required concentration is supplied from the carbon dioxide supply section into the disposal chamber through the supply channel under the control of the control means, and the animals in the disposal chamber are euthanized.

  Further, when the animal is disposed only with the anesthetic gas, the anesthetic gas having a required concentration is supplied from the anesthetic gas supply unit into the disposal chamber through the supply path by the control of the control means, and the animal in the disposal chamber is euthanized.

  Thus, when euthanizing animals such as wild dogs, for example, depending on the target animal, there are three types of disposal: disposal with carbon dioxide only, disposal with anesthetic gas and carbon dioxide, or disposal with only anesthetic gas. The method can be selected as appropriate.

  Circulating means for circulating the anesthetic gas in the disposal chamber and the supply path to average the concentration of the anesthetic gas, and the temperature of the anesthetic gas circulating in the disposal chamber and the supply path at a temperature that does not condense in the circulation path including the disposal chamber. Those equipped with temperature maintenance means including a heater for the disposal chamber that maintains the range, dispose of the animal quickly by averaging the concentration of the anesthetic gas in the disposal chamber and in the route with the required concentration corresponding to the disposal of the animal. In addition, by maintaining the anesthetic gas within the required temperature range, it is possible to prevent the anesthetic agent in the anesthetic gas from condensing in the disposal chamber and in the route.

For animals equipped with animal storage cages that contain animals to be disposed of and put them into and out of the disposal room, place them in the animal storage cages before disposing of the animals. By allowing the cage to be accommodated in the disposal chamber by simply moving the cage, the risk of injury to workers due to the excitement or rampage of the animal when the animal is accommodated in the disposal device can be reduced.
In addition, it is preferable in view of the hygiene of the disposal site because it is easy to clean and treat excreta excreted before death when the animal is disposed by storing the animal in the animal housing cage.

  Remove the used anesthetic gas from the disposal room and recover the anesthetic agent from the anesthetic gas by connecting an anesthetic agent recovery device. By connecting the anesthetic agent recovery device, release the anesthetic gas into the atmosphere. In addition, it is possible to perform the operation so that the anesthetic agent can be reused, and the anesthetic can be reused, so that the burden on the environment can be minimized.

  A carbon dioxide gas supply unit, an anesthetic gas supply unit, an air supply unit, and control means are provided on the disposal chamber. Carbon dioxide, anesthetic gas, and air are sent from the ceiling of the disposal chamber to the disposal chamber. Compared with the case where the gas is sent from the bottom side, it becomes easier to diffuse into the chamber at the initial stage of injecting the gas into the disposal chamber, and the gas concentration can be averaged efficiently.

  In the present invention, when euthanizing an animal, for example, depending on the target animal, three types of disposal methods are appropriately selected: disposal using only carbon dioxide, disposal using a combination of anesthetic gas and carbon dioxide, or disposal using only anesthetic gas. Therefore, it is possible to provide an animal euthanasia disposal apparatus and a method for euthanizing an animal in a disposal chamber that can flexibly cope with a change in disposal method.

  Further, the present invention includes a circulation means for circulating the anesthetic gas in the disposal chamber and the supply path to average the concentration of the anesthetic gas, and the temperature of the anesthetic gas circulated in the disposal chamber and the supply path by the heater for the disposal chamber. Since it can be maintained within a temperature range that does not condense in the circulation path including the disposal chamber, the concentration of anesthetic gas in the disposal chamber and the path can be averaged with the required concentration corresponding to the disposal of the animal, and the animal can be disposed of promptly. In addition, by maintaining the anesthetic gas within a required temperature range, it is possible to prevent the anesthetic agent in the anesthetic gas from condensing in the disposal chamber and in the route.

The perspective explanatory drawing of the state which opened the main body door of the animal euthanasia disposal apparatus which concerns on this invention, and took out the storage cage. The animal euthanasia disposal apparatus shown in FIG. 1 is shown, (a) is front view explanatory drawing, (b) is right side explanatory drawing, (c) is left side explanatory drawing. The control flow figure in the case of disposing only with carbon dioxide gas with the animal euthanasia disposal apparatus. Explanatory drawing which shows the state which is preparing for driving | operation. Explanatory drawing which shows the state which is inject | pouring a carbon dioxide gas into a disposal chamber. Explanatory drawing which shows the leaving state after carbon dioxide gas injection | pouring. Explanatory drawing which shows the state which has substituted the carbon dioxide gas in a disposal chamber with air. The control flow figure at the time of performing disposal using anesthesia gas and carbon dioxide together with the animal euthanasia disposal apparatus. Explanatory drawing which shows the state which is preparing for driving | operation. Explanatory drawing which shows the state which has inject | poured the anesthetic gas into the disposal chamber. Explanatory drawing which shows the leaving state after anesthetic gas injection | pouring. Explanatory drawing which shows the state which is inject | pouring a carbon dioxide gas into a disposal chamber. Explanatory drawing which shows the leaving state after carbon dioxide gas injection | pouring. Explanatory drawing which shows the state which has substituted the anesthetic gas and carbon dioxide in the disposal chamber with air. The control flow figure in the case of disposing only with anesthetic gas with the animal euthanasia disposal apparatus. Explanatory drawing which shows the state which is preparing driving | operation. Explanatory drawing which shows the state which has inject | poured the anesthetic gas into the disposal chamber. Explanatory drawing which shows the leaving state after anesthetic gas injection | pouring. Explanatory drawing which shows the state which has substituted the anesthetic gas in a disposal chamber with air.

Embodiment

The present invention will be described in detail based on the embodiments shown in the drawings.
Please refer to FIG. 1 and FIG.

  Animal euthanasia disposal device A is a mode in which only carbon dioxide gas is injected into the disposal room when the animal such as a wild dog is euthanized in local governments, etc. <M1>. Carbon dioxide after injecting anesthetic gas into the disposal room This is a device that can be appropriately switched between three modes: a mode <M2> for injecting and disposing gas, and a mode <M3> for injecting and disposing only anesthetic gas into the disposal chamber.

  The animal euthanasia disposal apparatus A according to the present embodiment includes an apparatus main body 1 and an animal storage cage 2 accommodated in the apparatus main body 1. The apparatus body 1 includes an upper control chamber 10, a lower disposal chamber 12, and a control panel 11 provided on the front side of the control chamber 10. Casters 14 are attached to the four corners of the bottom of the disposal chamber 12.

  Note that the control panel 11 is provided with a control unit (all of which are not shown in the figure and omitted), including an operation system such as a main breaker, a start switch, and a replacement start switch, which will be described later. Further, the animal euthanasia disposal apparatus A is provided with a disposal chamber 12 and a control device 3 which will be described later, and is relatively small in size. Easily.

  The control room 10 includes a control device 3 (described later, see FIG. 4 and the like) constituting control means, and an inspection lid 101 for performing maintenance of the internal control device 3 on the side. Is provided. The interior of the control chamber 10 is separated from the disposal chamber 12 and is kept airtight with respect to the disposal chamber 12 except for the flow of carbon dioxide gas, anesthetic gas, air, and the like through each supply path described later. It is like that.

  The interior of the disposal chamber 12 is an accommodation space 120 having a size (volume) that can accommodate the animal accommodation cage 2. A viewing window 121 is provided on the side wall on one side of the disposal chamber 12. Further, the entire front side of the disposal chamber 12 is opened. On the front side of the disposal chamber 12, a disposal chamber door 13 that opens and closes an opening (reference number omitted) is hinged to one side plate (reference number omitted) so as to open and close in the horizontal direction.

  Inside the six surfaces (bottom plate, top plate, both side plates, back plate and the disposal chamber door 13) that enclose the accommodating space 120 and form the disposal chamber 12, there is a disposal chamber heater 126 (see FIG. 4 as a system diagram). (Not shown in FIGS. 1 and 2) is laid (arranged) almost entirely.

  The disposal chamber door 13 can be fixed in a closed state by door fixing tools 130 provided at three locations. Further, a packing 131 is attached to the inner surface side of the disposal chamber door 13 over the entire circumference. When the disposal chamber door 13 is closed and fixed by each door fixing tool 130, the packing 131 on the inner surface of the disposal chamber door 13 is fixed. The accommodation space 120 can be maintained in an airtight state by being in close contact with the opening edge of the disposal chamber 12 and cooperating with another airtight structure (not shown).

  The animal housing cage 2 is formed with an outer shape slightly smaller than the volume of the housing space 120 so that it can be housed in the housing space 120 of the apparatus main body 1. The animal storage cage 2 has a cage body 20. Casters 22 are attached to the four corners of the bottom of the cage body 20. On the front side of the cage body 20, an entrance (not shown) that can be opened and closed by the opening / closing door 21 is formed. An upper plate 23 is attached to the upper portion of the cage body 20.

  The control device 3 is built in the control room 10 as described above. The control device 3 is a device that injects and discharges carbon dioxide gas, anesthetic gas, or air (outside air) into the disposal chamber 12 (accommodation space 120) by switching each setting mode. In addition, by building the control apparatus 3 integrally on the upper part of the disposal chamber 12, space efficiency increases and the whole apparatus main body 1 can be reduced in size.

Here, the control device 3 will be described in more detail with reference to FIG. 1, FIG. 2, FIG.
A carbon dioxide supply port 312, an exhaust connection port 360, an exhaust connection port 361, an outside air introduction port 333, and a residual air connection port 362 are provided on the outer wall portion (reference number omitted) of the control chamber 10. Further, the ceiling plate 123 of the storage section 120 of the disposal chamber 12 is provided with a carbon dioxide gas inlet 127, an air inlet 128, a pressure regulator 122, and an anesthetic gas inlet 129.

  The disposal chamber 12 includes a disposal chamber temperature sensor 124, a disposal chamber temperature controller 125, and the bottom plate, top plate, both side plates, the back plate, and the disposal chamber heater 126 for the disposal chamber door 13 as described above. The atmosphere in the disposal chamber 12 and the temperature of the gas passing through the disposal chamber 12 and the supply path can be adjusted to an appropriate temperature. The disposal chamber temperature sensor 124 includes at least the temperature of the anesthetic gas circulating in the disposal chamber 12 and the supply path in the disposal chamber 12 together with the disposal chamber heater 126, its temperature controller (not shown), and a vaporizer heater 328 described later. A temperature maintaining means is configured to maintain the temperature within a range not condensing in the circulation path. Depending on the case, other heating means may be employed.

  A carbon dioxide gas supply path 31 is provided between the carbon dioxide gas inlet 127 and the carbon dioxide gas supply port 312. In the carbon dioxide gas supply path 31, a carbon dioxide pressure control valve 313 and a carbon dioxide gas injection valve 310 are provided in order from the side close to the carbon dioxide gas supply port 312. The carbon dioxide supply port 312 is connected directly or indirectly to the carbon dioxide cylinder 4 constituting the carbon dioxide supply section together with the carbon dioxide supply passage 31.

  A blower 370 is disposed in the control room 10. An intake passage 37 is provided between the intake port 128 and the suction side of the blower 370. In the control room 10, an anesthetic agent tank 323 of a vaporizer C that constitutes an anesthetic gas supply unit together with a blower 370 and an anesthetic gas supply path 32b described later is disposed. A blower passage 32 a is provided between the anesthetic agent tank 323 and the discharge side of the blower 370. A blower outlet valve 371 and a vaporizer inlet valve 321 are provided in order from the side closer to the blower 370 in the path of the blower path 32a.

  An anesthetic gas supply path 32 b is provided between the anesthetic agent tank 323 and the anesthetic gas introduction port 129 of the disposal chamber 12. A vaporizer outlet valve 322 is provided in the path of the anesthetic gas supply path 32b. The anesthetic agent tank 323 includes a vaporizer C together with an anesthetic agent liquid level sensor 324, an anesthetic agent liquid level indicator 325, an anesthetic agent temperature sensor 326, an anesthetic agent temperature controller 327, and an anesthetic agent tank 323. A vaporizer heater 328 is provided. Reference numeral 329 denotes an anesthetic agent liquid level meter 329 that allows the amount of the anesthetic agent in the anesthetic agent tank 323 to be visually observed from the outside.

  Between the outside air introduction port 333 and the anesthetic gas introduction port 129 of the disposal chamber 12, an air supply path 33 constituting an air supply unit is provided. The air supply path 33 is partially in the same path as the air blowing path 32a and the anesthetic gas supply path 32b. In the air supply path 33, in the path from the outside air inlet 333 to the blower path 32a, a silencer 334 for reducing the sound when air enters the apparatus in order from the side close to the outside air inlet 333. And a disposal chamber intake valve 330 is provided.

  In the air supply path 33, a carburetor bypass valve 332 is included in the carburetor bypass path 33 a connected to the upstream side of the carburetor inlet valve 321 of the blower path 32 a and the downstream side of the carburetor outlet valve 322 of the anesthetic gas supply path 32 b. Is provided. Further, in the air passage 32 a, a gas discharge path 39 is branched from the downstream side of the vaporizer inlet valve 321, and an anesthetic agent tank upper discharge valve 390 is provided at the tip of the gas discharge path 39.

The pressure adjusting port 122 of the disposal chamber 12 is connected to a disposal chamber pressure adjusting path 34 whose tip is open to the atmosphere. A pressure equalizing valve 340 is provided in the disposal chamber pressure adjusting path 34.
In the air passage 32a, a gas discharge passage 35 whose tip is open to the atmosphere is connected upstream of the blower outlet valve 371. An exhaust valve 350 is provided in the gas discharge path 35.

  In the disposal chamber pressure adjustment path 34, a gas recovery / discharge path 36 a is provided between a side closer to the pressure adjustment port 122 than the pressure equalization adjustment valve 340 and the exhaust connection port 361. In the gas discharge path 35, a gas recovery forced discharge path 36 b is provided between a side closer to the blower 370 than the exhaust valve 350 and the exhaust connection port 360. Further, a recovered residual gas introduction path 36 c is provided between the downstream side of the carburetor bypass valve 332 and the residual air connection port 362 in the air supply path 33.

  The intake passage 37, the blower 370, the blower passage 32a, the vaporizer bypass passage 33a, the disposal chamber 12, and the like constitute a circulation means. Reference numeral 38 denotes an anesthetic injection path for injecting an anesthetic into the anesthetic tank 323, and an anesthetic tank medicine injection source valve 380 is provided in the path.

  The exhaust connection port 360, the exhaust connection port 361, and the residual air connection port 362 have gas recovery as shown by imaginary lines in FIGS. 4 to 7, 9 to 14, and 16 to 19. A device 5 can be connected. The gas recovery apparatus 5 is connected to the animal euthanasia disposal apparatus A as necessary, and the gas recovery path 51 is connected to the exhaust connection port 361 and the gas supply path 52 is connected to the exhaust connection port 360. Further, by connecting the gas return path 53 to the residual air connection port 362, the anesthetic contained in the anesthetic gas can be recovered.

(Function)
The operation of the animal euthanasia disposal apparatus A will be described with reference to FIGS.
The animal euthanasia disposal device A switches between three modes: mode <M1> using only carbon dioxide, mode <M2> using both anesthetic gas and carbon dioxide, and mode <M3> using only anesthetic gas. The animal can be euthanized.

  First, an animal to be disposed is housed in the animal housing cage 2 constituting the animal euthanasia disposal apparatus A, and the animal is housed in the disposal chamber 12 of the apparatus body 1 together with the animal housing cage 2.

  In this way, the animals are accommodated in the disposal chamber in a stepwise manner. For example, the animals are accommodated in the animal accommodating cage 2 in a place away from the apparatus main body 1 in advance, so that the animals are stored in the apparatus main body 1. Compared with the case where the animal is directly stored in the disposal chamber 12, the animal is less excited. Thereby, while the operation | work of accommodation of the animal in the disposal chamber 12 can be performed easily, the danger that an animal may violate and an operator will be injured can be eased.

  Further, in the animal euthanasia disposal apparatus A, the disposal chamber 12 is located below the apparatus main body 1, so that the animals are accommodated and the heavy animal storage cage 2 is carried into the disposal chamber 12. Can also be made relatively easy.

  The operation of the animal euthanasia device A is started. In the following description, in FIGS. 4 to 7, 9 to 14, and FIGS. 16 to 19, a path indicated by a thick line is a path through which gas flows effectively, and each valve in the path is opened. ing. A path indicated by a thin line is a path where the gas flow is stopped, and each valve in the path is closed.

First, a disposal method is selected from each of the modes M1, M2, and M3. (Step S1)
Thus, the following control is performed by switching to one of the modes M1, M2, and M3.

<M1. Disposal mode using only carbon dioxide>
3 and 4 are referred to (steps S101 to S105).

(1) Carbon dioxide gas disposal started. (Step S101)
(2) Disposer chamber heater 126: ON, blower outlet valve 371: open. (Step S102)
(3) Start switch of control panel 11: ON. Ready for operation. (Step S103)

(4) The pressure equalization adjusting valve 340 is opened, and the vaporizer bypass valve 332 is opened. (Step S104)
(5) Blower 370: ON. (Step S105)

Thereby, the air in the disposal chamber 12 is heated by the disposal chamber heater 126 while circulating through the circulation path including the intake path 37, the air supply path 32a, and the vaporizer bypass path 33a.
By opening the pressure equalization adjusting valve 340, the pressure of the air (or each gas) in the disposal chamber 12 can be maintained at a pressure substantially equal to the pressure of the outside air (atmospheric pressure) through the disposal chamber pressure adjusting path 34. Rapid pressure fluctuations in the disposal chamber 12 can be prevented. Then, after the required time has elapsed, the preparation for operation is completed.

Refer to FIG. 3 and FIG. 5 (steps S106 to S108).
(6) The carbon dioxide injection process starts. (Step S106)
(7) Carbon dioxide injection valve 310: Open. (Step S107)

Note that the carbon dioxide gas cylinder 4 is directly or indirectly connected to the carbon dioxide gas supply port 312 in advance as described above, and the flow rate of the carbon dioxide pressure control valve 313 is appropriately set. The carbon dioxide injected into the disposal chamber 12 is mixed with air and circulated in the same manner as described above, and the concentration of carbon dioxide in the disposal chamber 12 gradually increases. And the carbon dioxide gas concentration in the disposal chamber 12 becomes a required concentration corresponding to the disposal of the animal after the lapse of the required time.
(8) Blower 370: OFF, carbon dioxide gas injection valve 310: closed. Carbon dioxide injection is completed. (Step S108)

Refer to FIG. 3 and FIG. 6 (steps S109 to S110).
(9) The leaving process is started. (Step S109)
(10) The pressure equalization adjusting valve 340 is closed, the vaporizer bypass valve 332 is closed, and the blower outlet valve 371 is closed. (Step S110)

(11) Under standing. (Step S111)
As a result, the disposal chamber 12 is left for a required time with the carbon dioxide gas concentration maintained at the required concentration, and animals housed in the disposal chamber 12 are euthanized. After the required time has elapsed, the standing is completed.

3 and 7 are referred to (steps S112 to S119).
(12) The replacement process starts. (Step S112)
(13) Replacement start switch of control panel 11: ON.
The pressure equalizing adjustment valve 340 is opened, the disposal chamber intake valve 330 is opened, the carburetor bypass valve 332 is opened, the exhaust valve 350 is opened, and the blower outlet valve 371 is closed. (Step S113)

(14) Blower 370: ON. (Step S114)
(15) Under replacement.
Thereby, since the air containing carbon dioxide gas in the disposal chamber 12 is released to the atmosphere through the intake passage 37 and the gas discharge passage 35, the inside of the disposal chamber 12 becomes negative pressure, and the air supply passage 33, the air passage 32a, Air is introduced into the disposal chamber 12 through the vaporizer bypass passage 33a and the disposal chamber pressure adjustment passage 34. Thereby, the carbon dioxide gas in the disposal chamber 12 is gradually replaced with air. (Step S115)
(16) Blower 370: OFF. (Step 116)
After the time has elapsed, the replacement is complete.

(17) Pressure equalizing adjustment valve 340: closed, disposal chamber intake valve 330: closed, carburetor bypass valve 332: closed, exhaust valve 350: closed. (Step S117)
After the blower 370 is stopped, the valves are closed after the internal pressure in the disposal chamber 12 or the like becomes substantially equal to the atmospheric pressure after a certain period of time.

(18) Blower outlet valve 371: Open. (Step S118)
(19) Complete disposal with carbon dioxide. (Step S119)

<M2. Disposal mode using both anesthetic gas and carbon dioxide gas>
8 and 9 are referred to (steps S201 to S205).

(1) Commenced disposal using anesthetic gas and carbon dioxide. (Step S201)
(2) The vaporizer heater 328 is ON, the disposal chamber heater 126 is ON, and the blower outlet valve 371 is open. (Step S202)

  In the anesthetic agent tank 323, an appropriate amount of anesthetic agent is injected into the anesthetic agent tank 323 through the anesthetic agent injection path 38 in advance. The amount of the anesthetic agent is monitored by the anesthetic agent liquid level sensor 324, and can be confirmed visually with the anesthetic liquid level meter 329. If the amount of the anesthetic agent in the anesthetic agent tank 323 is less than the specified value, an anesthetic gas having a required concentration cannot be generated, so that an alarm is issued.

(3) Start switch of control panel 11: ON. Operation preparation process started. (Step S203)
(4) The pressure equalization adjusting valve 340 is opened, and the vaporizer bypass valve 332 is opened. (Step S204)
(5) Blower 370: ON. (Step S205)

  Accordingly, the air in the disposal chamber 12 is heated by the disposal chamber heater 126 while circulating through the intake passage 37 and the vaporizer bypass passage 33a. After the required time, the temperature of the air in the disposal chamber 12 reaches the set temperature. The temperature of the anesthetic agent in the anesthetic agent tank 323 is monitored by the anesthetic agent temperature sensor 326, and after reaching the required temperature suitable for vaporization of the anesthetic agent, the anesthetic agent temperature controller 327 is used in the required temperature range. Maintained. Then, after the required time has elapsed, the preparation for operation is completed.

8 and 10 are referred to (steps S206 to S208).
(6) Anesthetic gas injection process started. (Step S206)
(7) The vaporizer inlet valve 321 is opened, and the vaporizer outlet valve 322 is opened. (Step S207)

As a result, the anesthetic gas having a required concentration is first injected into the disposal chamber 12 through the anesthetic gas supply path 32b, and further circulated through the disposal chamber 12, the intake path 37, the blower 370, the blower path 32a, and the vaporizer bypass path 33a. By doing so, the anesthetic gas is agitated and the concentration is averaged. The anesthetic gas is preliminarily heated to a temperature that is difficult to condense as described above, and since the concentration is averaged and there is no unevenness, even if it is cooled to some extent in each path including the disposal chamber 12, it is liquefied. Hard to do. After the required time, the anesthetic gas injection is completed.
(8) The vaporizer inlet valve 321 is closed, and the vaporizer outlet valve 322 is closed. (Step S208)

8 and 11 are referred to (steps S209 to S210).
(9) The leaving process is started. (Step S209)
(10) Pressure equalizing adjustment valve 340: closed, vaporizer bypass valve 332: closed, blower outlet 371: closed. (Step S210)
As a result, the inside of the disposal chamber 12 is left for a required time while maintaining the anesthetic gas concentration at the required concentration, and the animals housed in the disposal chamber 12 lose consciousness. Leaving is completed after the required time has elapsed.

8 and 12 are referred to (steps S211 to S215).
(11) The carbon dioxide injection process starts. (Step S211)
(12) The pressure equalization adjusting valve 340 is opened, the vaporizer bypass valve 332 is opened, and the blower outlet valve 371 is opened. (Step S212)
(13) Blower 370: ON, carbon dioxide gas injection valve 310: open. (Step S213)

(14) During injection. (Step 214)
The carbon dioxide injected into the disposal chamber 12 is mixed with air and circulates together through the intake passage 37 and the vaporizer bypass passage 33a, and the concentration of carbon dioxide in the disposal chamber 12 gradually increases. Since the pressure equalization adjusting valve 340 is open, the carbon dioxide gas is somewhat released to the atmosphere, but at the same time, the anesthetic gas is released in the same manner, so that the concentration of the anesthetic gas gradually decreases. Then, after the required time has elapsed, the concentration of carbon dioxide in the disposal chamber 12 reaches the required concentration.
(15) Blower 370: OFF, carbon dioxide injection valve 310: closed. (Step S215)

8 and 13 are referred to (steps S216 to S217).
(16) The standing process is started. (Step S216)
(17) Pressure equalizing adjustment valve 340: closed, vaporizer bypass valve 332: closed, blower outlet 371: closed. (Step S217)
Thus, the disposal chamber 12 is left for a required time while maintaining the carbon dioxide concentration at the required concentration, and the animals in the disposal chamber 12 are euthanized without being conscious. After the required time has elapsed, the standing is completed.

8 and 14 are referred to (steps S218 to S225).
(18) The replacement process is started. (Step S218)
(19) Replacement start switch of control panel 11: ON.
The pressure equalizing adjustment valve 340 is opened, the disposal chamber intake valve 330 is opened, the carburetor bypass valve 332 is opened, the exhaust valve 350 is opened, and the blower outlet valve 371 is closed. (Step S219)

(20) Blower 370: ON. (Step S220)
(21) During replacement.
As a result, the air containing carbon dioxide gas in the disposal chamber 12 is released to the atmosphere through the intake passage 37 and the gas discharge passage 35, so that the inside of the disposal chamber 12 has a negative pressure, and the air supply passage 33 and the air passage 32a. Then, air is introduced into the disposal chamber 12 through the vaporizer bypass passage 33a and the disposal chamber pressure adjusting passage 34, and the carbon dioxide gas and the anesthetic gas are gradually replaced with air. (Step S221)

(22) Blower 370: OFF. (Step S222)
After the time has elapsed, the replacement is complete.
(23) Pressure equalizing adjustment valve 340: closed, disposal chamber intake valve 330: closed, carburetor bypass valve 332: closed, exhaust valve 350: closed. (Step S223)

(24) Blower outlet valve 371: Open. (Step S224)
(25) Disposal completed by combined use of anesthetic gas and carbon dioxide gas. (Step S225)

<M3. Mode to dispose only with anesthetic gas>
Reference is made to FIGS. 15 and 16 (steps S301 to S305).

(1) Started disposal with anesthetic gas. (Step S301)
(2) The vaporizer heater 328 is ON, the disposal chamber heater 126 is ON, and the blower outlet valve 371 is open. (Step S302)
An appropriate amount of an anesthetic is injected into the anesthetic agent tank 323 through the anesthetic injection path 38 in advance. Control of the amount of the anesthetic is performed in the same manner as in the case of disposal using the anesthetic gas and carbon dioxide.
(3) Start switch of control panel 11: ON.
Operation preparation process started. (Step S303)
(4) The pressure equalization adjusting valve 340 is opened, and the vaporizer bypass valve 332 is opened. (Step S304)

(5) Blower 370: ON. (Step S305)
Accordingly, the air in the disposal chamber 12 is heated by the disposal chamber heater 126 while circulating through the intake passage 37 and the vaporizer bypass passage 33a. The temperature of the anesthetic agent in the anesthetic agent tank 323 is managed in the same manner as in the mode in which the anesthetic gas and the carbon dioxide gas are used together. Then, after the required time has elapsed, the preparation for operation is completed.

Reference is made to FIGS. 15 and 17 (steps S306 to S308).
(6) Anesthetic gas injection process started. (Step S306)
(7) The vaporizer inlet valve 321 is opened, and the vaporizer outlet valve 322 is opened. (Step S307)

As a result, an anesthetic gas having a required concentration is first injected into the disposal chamber 12 through the anesthetic gas supply passage 32b, and further circulated through the disposal chamber 12, the intake passage 37, the air passage 32a, and the vaporizer bypass passage 33a. The anesthetic gas is agitated and the concentration is averaged. The anesthetic gas is preheated to a temperature at which it is difficult to condense, and since the concentration is averaged and there is no unevenness, it is difficult to liquefy even if it is cooled to some extent in each path including the disposal chamber 12. After the required time, the anesthetic gas injection is completed.
(8) The vaporizer inlet valve 321 is closed and the vaporizer outlet valve 322 is closed. (Step S308)

Refer to FIGS. 15 and 18 (steps S309 to S311).
(9) The leaving process is started. (Step S309)
(10) Pressure equalizing adjustment valve 340: closed, vaporizer bypass valve 332: closed, blower outlet 371: closed. (Step S310)

(11) Under standing.
As a result, the disposal chamber 12 is left for a required time in a state where the anesthetic gas concentration is maintained at a required concentration at which the animal can be disposed, and the animal housed in the disposal chamber 12 first loses consciousness. , Euthanized as it is. After the required time has elapsed, the standing is completed. (Step S311)

Reference is made to FIGS. 15 and 19 (steps S312 to S319).
(12) The replacement process starts. (Step S312)
(13) Replacement start switch of control panel 11: ON.
The pressure equalizing adjustment valve 340 is opened, the disposal chamber intake valve 330 is opened, the carburetor bypass valve 332 is opened, the exhaust valve 350 is opened, and the blower outlet valve 371 is closed. (Step S313)

(14) Blower 370: ON. (Step S314)
(15) Under replacement.
Thereby, since the air containing the anesthetic gas in the disposal chamber 12 is discharged to the atmosphere through the intake passage 37 and the gas discharge passage 35, the inside of the disposal chamber 12 becomes negative pressure, and the air supply passage 33, the air passage 32a, Air is introduced into the disposal chamber 12 through the vaporizer bypass path 33a and the disposal chamber pressure adjusting path 34, and is gradually replaced with air. (Step S315)
(16) Blower 370: OFF. (Step S316)
After the time has elapsed, the replacement is complete.
(17) Pressure equalizing adjustment valve 340: closed, disposal chamber intake valve 330: closed, carburetor bypass valve 332: closed, exhaust valve 350: closed. (Step S317)

(18) Blower outlet valve 371: Open. (Step S318)
(19) Completed disposal with anesthetic gas. (Step S319)

  As mentioned above, although this invention was demonstrated, this invention is not limited only to the said embodiment. The above-described embodiment is an exemplification, and any device that has substantially the same configuration as the technical idea described in the claims of the present invention and has the same operational effects can be used. Included in the technical scope.

A Animal euthanasia disposal apparatus 1 Apparatus main body 10 Control room 101 Inspection lid 11 Control panel 12 Disposal room 120 Accommodating space 121 Viewing window 122 Pressure adjusting port 123 Ceiling panel 124 Disposal room temperature sensor 125 Disposal room temperature controller 126 Disposal room use Heater 127 Carbon dioxide gas inlet 128 Air inlet 129 Anesthetic gas inlet 13 Disposal room door 130 Door fixture 131 Packing 14 Caster 2 Cage body 20 Cage body 21 Open / close door 22 Caster 23 Upper plate 3 Control device 31 Carbon dioxide gas supply path 310 Carbon dioxide gas injection valve 312 Carbon dioxide supply port 313 Carbon dioxide pressure control valve 32a Air supply path 32b Anesthetic gas supply path C Vaporizer 321 Vaporizer inlet valve 322 Vaporizer outlet valve 323 Anesthetic agent tank 324 Anesthetic agent liquid level sensor 325 Anesthetic agent Tank level indicator 326 Anesthetic Nk temperature sensor 327 Anesthetic agent tank temperature controller 328 Vaporizer heater 329 Anesthetic agent liquid level gauge 33 Air supply path 33a Vaporizer bypass path 330 Disposal room intake valve 332 Vaporizer bypass valve 333 Outside air inlet 334 Silencer 34 Disposal room Pressure adjusting path 340 Equal pressure adjusting valve 35 Gas exhaust path 350 Exhaust valve 36a Gas recovery exhaust path 36b Gas recovery forced exhaust path 36c Recovered residual gas introduction path 360 Exhaust connection port 361 Exhaust connection port 362 Residual air connection port 37 Intake path 370 Blower 371 Blower outlet valve 38 Anesthetic agent injection path 380 Anesthetic agent medicine injection source valve 39 Gas discharge path 390 Anesthetic agent tank upper release valve 4 Carbon dioxide gas cylinder 5 Gas recovery device 51 Gas recovery path 52 Gas supply path 53 Gas return path

Claims (7)

An animal euthanasia device,
A disposal room,
A disposal chamber heater for heating the disposal chamber;
A carbon dioxide supply section for supplying carbon dioxide to the disposal chamber;
An anesthetic gas supply unit for supplying anesthetic gas to the disposal chamber;
An air supply unit for supplying air to the disposal chamber;
Control means for controlling supply of the carbon dioxide gas, anesthetic gas, and air;
With
The control means includes
A mode in which only carbon dioxide gas is supplied to the disposal chamber;
A mode in which anesthetic gas is supplied to the disposal chamber and then carbon dioxide gas is supplied;
A mode of supplying only anesthetic gas to the disposal chamber,
Including control of the
Animal euthanasia device. The disposal chamber heater heats the entire inner surface of the disposal chamber.
The animal euthanasia disposal apparatus according to claim 1. Circulating means for circulating the anesthetic gas in the disposal chamber and the supply path to average the concentration of the anesthetic gas, and the temperature of the anesthetic gas circulating in the disposal chamber and the supply path at a temperature that does not condense in the circulation path including the disposal chamber. Temperature maintaining means including a heater for the disposal chamber to maintain in the range,
The animal euthanasia disposal apparatus according to claim 1 or 2. It is equipped with an animal storage cage that contains animals to be disposed of and puts them in and out of the disposal room.
The animal euthanasia disposal apparatus according to claim 1, 2 or 3. It is equipped with a means for connecting an anesthetic agent recovery device that takes out the used anesthetic gas from the disposal chamber and recovers the anesthetic agent from the anesthetic gas.
The animal euthanasia disposal apparatus according to claim 1, 2, 3 or 4. A carbon dioxide gas supply unit, an anesthetic gas supply unit, an air supply unit and control means are provided on the disposal chamber, and the carbon dioxide gas, the anesthetic gas and air are sent from the ceiling of the disposal chamber to the disposal chamber.
The animal euthanasia disposal apparatus according to claim 1, 2, 3, 4 or 5. A method of euthanizing an animal in a disposal room,
Select one of the following methods: using carbon dioxide in the disposal chamber, using anesthetic gas in the disposal chamber, or using carbon dioxide and anesthetic gas in the disposal chamber,
When anesthetic gas is used, the anesthetic gas is circulated in the disposal chamber and the supply path to average the concentration, and the anesthetic gas does not condense in the circulation path including the disposal chamber in cooperation with the disposal chamber heater. Maintain in the temperature range,
When using carbon dioxide and anesthesia gas, use carbon dioxide after the animal's consciousness has been lost using anesthetic gas first,
How to euthanize animals in the disposal room.

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