JPS622219B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of circulating and sterilizing air in a room such as a hospital room and controlling temperature and humidity using a sterilization temperature and humidity control device. In particular, the invention includes a step of circulating steam through the chamber and associated equipment to completely sterilize it;
A process of circulating dry and heated air through the chamber and related equipment to dry it, then continuing the circulation operation to lower the temperature to a predetermined temperature, and finally adding sterilized, temperature-controlled and humidity-controlled air little by little. The present invention relates to a method for circulating and sterilizing air in a room and controlling temperature and humidity, the method comprising the steps of feeding and circulating air.

Hereinafter, an apparatus capable of achieving the method of the present invention will be explained with reference to the drawings. Although one room is shown in the drawing, a desired number of rooms can be sterilized and temperature and humidity controlled. In addition, it is preferable to construct the room as a constant temperature room, and an example of such a constant temperature room is to surround the room with pipes, cover the outside with an outer wall made of a heat insulating material, and use a heat exchanger to supply water whose temperature is controlled using a heat exchanger. The temperature of the room is controlled by circulating the water.

In the figure, arrows indicate the direction of fluid flow. Number 1 generally indicates a room 1 such as a hospital room, and air in the room 1 is sucked into the cyclone 4 through an air conduit 3 connected tangentially around the cyclone 4. A steam pipe 5 is connected to the cyclone 4, and solid matter such as dust and dirt entrained from the chamber 1 is separated by the cyclone 4 and discharged through a valve 22, thereby purifying the air. Further, if necessary, steam is blown in from the steam pipe 5 to sterilize the air from the chamber 1. The air that has been purified and sterilized by removing dust etc. by the cyclone 4 is sent to the cyclone 4.
It is sucked out of the cyclone 4 by a fan F through an upwardly extending conduit 3' and blown into a cyclonic spray shower cooler 6. Spray shower cooler 6
communicates with the air conduit 3' which communicates with the cyclone 4 in the circumferential tangential direction, and connects and fixes the reflux pipe 7 extending upward, and connects a cold water pipe 8 around the reflux pipe 7 in the spray shower cooler 6. It is placed. This cold water pipe 8 has many spray ports 9a, 9b, 9c...
... are provided, and these spray ports open into the spray shower cooler 6, and the cold water pipe 8 communicates with the cold water tank 10. A large amount of cold water cooled to a predetermined temperature is always stored in the cold water tank 10, and the cold water is sent to the cold water pipe 8 by the pump P, and its spray ports 9a, 9b, 9c...
It is sprayed in smaller droplets in the form of wrinkles. The air entering the spray shower cooler 6 passes through the spray ports 9a, 9b,
9c............, heat is exchanged quickly and efficiently, excess moisture due to cooling is condensed and deprived of water, and insufficient moisture is humidified, saturated at a temperature approximately equal to the cold water temperature, and refluxed. It is sent out from tube 7.
Since particulates such as odors and dust in the chamber 1 are dissolved or suspended in the water from which heat has been taken, the water passes through the conduit 11, enters the strainer 12, is filtered, and is returned to the cold water tank 10 through the conduit 11. . Therefore,
The filter 12 is preferably a normal filter with an adsorbent material such as activated carbon, diatomaceous earth, acid clay, or ion exchange resin layered thereon. As mentioned above, the air is saturated and humidified at low temperatures. The air leaving the spray shower cooler 6 is sent through a return pipe 7 to the spray shower cooler 6'. The reflux pipe 7 opens into the spray shower cooler 6' tangentially around its circumference. The spray shower cooler 6' is the spray shower cooler 6.
The structure is similar to that of the previous model, and the same parts are indicated by the same numbers, with a prime sign (') added to the numbers. Since the function of the spray shower cooler 6' is similar to that of the spray shower cooler 6, the explanation thereof will be omitted here. Although only two spray shower coolers are shown in the drawing, several more spray coolers may be sequentially arranged as desired. The cooled and humidified air leaving the spray shower cooler arranged at the end is still humid with some splashes, so it is completely dehydrated by the second cyclone 13. Therefore, only the dehydrated air with saturated humidity returns to the chamber 1 via the reflux pipe 2. steam pipe 14
One end is opened to the cyclone 13, steam is blown in through the cyclone 21 as needed, the circulating air is heated, and the chamber 1 and piping can be sterilized through the reflux pipe 2. The gas discharged from the cooling water cooling compressor 15, 15' is sent to the condenser 16, 1.
6' and an expansion valve (not shown) to cool the water in the cold water tanks 10, 10'. temperature detector
A ₁ , A ₂ and humidity detectors B ₁ , B ₂ are installed in room 1. Impurities from the cyclones 13, 21 are discharged through conduits 24, 25. Cooling water tank 1
Temperature detectors C and C' are provided within 0 and 10'. Temperature detectors A ₁ and A ₂ are electrically coupled to the power of fan F (not shown), and temperature detectors C and C' are connected to compressor 1.
5 and 15'. The steam pipe 14 is connected to a third cyclone 21, and the third cyclone 21 is configured to remove water droplets from the fresh air and allow only steam to enter the second cyclone 13. That is, the third cyclone 21 is used not only to perform the sterilizing action as described above, but also to heat and humidify with steam when the outside temperature is high. A conduit 20 is further connected to the second cyclone 13 and can feed fresh air into the second cyclone 13 through the filter 19 and the heat exchanger 18 . The heat exchanger 18 is a heating device that can be heated indirectly by steam or other heating medium and serves to heat the outside air when the outside air is at a low temperature. For example, when the outside air temperature is low, around 20°C, the temperature is adjusted by introducing new air sterilized to 100°C to 110°C using the heat exchanger 18.

Further, a conduit 24 with a damper 23 interposed therebetween is connected to the air conduit 3' and the reflux tube 2, thereby forming an air bypass and making it possible to change the circulation path. The structure of the thermostatic chamber 1 is such that a heatproof wall 28 made of rubber or stainless steel is placed inside, and a water pipe 2 is placed around it.
Surround with 7. Furthermore, the outside of the water pipe 27 is surrounded by an outer wall 26 made of a heat insulating material. When the outside temperature is high, the water pipe 27 has a temperature slightly lower than that inside the constant temperature room 1 (for example,
By circulating water at a low temperature (2°C) and circulating water at a temperature slightly higher than the temperature inside the room 1 when the outside air is low, the room 1 is configured as a constant temperature room that is not affected by the outside air.

Regarding the operation of the sterilization temperature and humidity control device of this invention,
The compressors 15, 15'....... are operated to lower the water in the cold water tanks 10, 10'....... to a predetermined temperature. When the water drops to a certain temperature,
Compressors 15 and 1 are activated by commands from temperature detectors C and C'.
5'......... switch is opened and stopped,
When the temperature rises, it closes and operates, providing ON-OFF control. Chamber 1 is closed, and fan F and pump P are operated. First, 100℃ steam is introduced into chamber 1 to sterilize the interior. Next, dry air at 100°C is introduced to dry the entire chamber 1, and as the circulation continues, it is immediately cooled, and then sterilized air at about 20°C is introduced little by little. Therefore, the air in the chamber 1 is transferred to the first cyclone 4, the spray shower cooler 6, 6'...
. . . After passing through the second cyclone 13, it is sterilized, purified, temperature-controlled and humidity-controlled to an optimum state, and then returned to the room 1. When the temperature in the chamber 1 falls to a predetermined temperature, the temperature detectors A ₁ and A ₂ detect this state and stop the fan F or control the rotation speed of the fan F. In this case, the fan F is operated as is, and the damper 23
It is also possible to open the damper 23' and close the damper 23' so that no air circulates in the chamber 1, or to partially bypass the air by opening the dampers 23, 23' or partially closing only the damper 23. Of course, normally the damper 23 is closed and the damper 23' is opened to circulate the air. Since I configured it like this,
The interior of the room 1 is always kept at an optimal temperature and optimal relative humidity.

In this way, the present invention makes it possible to completely sterilize a room with steam and maintain a sterile state.

In addition, the present invention sterilizes the room with steam, then circulates dry and heated air to dry the room, and then sends temperature-controlled and humidity-controlled air, so that the temperature-controlled and humidity-controlled air is delivered little by little. By using closed circulation, it is possible to maintain appropriate temperature and humidity in a sterile state. Furthermore, without being limited to the management of the above-mentioned hospital rooms,
It is useful for controlling the atmosphere in a wide range of rooms such as operating rooms, laboratories, vaccine manufacturing rooms, etc., as well as buildings, etc. Furthermore, it can increase the rotation speed of the fan F and pump P to quickly circulate cooling air. It is possible to cool the stored material in a short time, and also to stop the pump P and close the steam pipe 14.
Steam is blown out and transported by circulating air to chamber 1.
It is also possible to sterilize the interior of the room, and since the air inside the room is purified during circulation, it becomes clean air, and odors generated in the room are deodorized by cold water, so there is no accumulation of strange odors in the room. In addition, since cold water is always stored in the cold water tank 10, it can be used in urgent situations and does not require a particularly large compressor.
In addition to saving on equipment investment, it has many advantages, such as less power consumption and, since it uses a closed cycle, less heat loss.

In addition, in the embodiment, since a plurality of cyclone type spray shower coolers are sequentially arranged,
Not only does the cyclone need to be small, but it also allows for more accurate temperature and humidity control. Further, although a cyclone is used in the apparatus of the embodiment, it is not necessarily limited to the use of a cyclone, and a filter or the like may be used instead of the cyclone.

[Brief explanation of the drawing]

The drawings show a schematic diagram of a sterilization temperature and humidity control device that accomplishes the method of the invention.

Claims (1)

[Claims] 1. Circulating steam through the chamber and associated equipment for complete sterilization; circulating dry, heated air through said chamber and associated equipment for drying, followed by continued circulation to bring the temperature to a predetermined temperature. A method for producing sterilized temperature-controlled air, comprising a step of lowering the air, and finally a step of gradually feeding and circulating sterilized, temperature-controlled, and humidity-controlled air.