JPS6135454B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for sterilizing indoor air such as a hospital room and controlling temperature and humidity to an optimum state.

In particular, this invention provides a method for sterilizing, temperature and humidity controlling the air in a room such as a hospital room, which includes a step of discharging the used air from the room, taking in fresh air and sterilizing it with steam, in one step or cooling and humidifying to saturated humidity in multiple stages; further temperature and humidity conditioning the cooled and humidified air to saturated humidity with sterilized fresh air or steam to a desired optimum state; and The present invention relates to a method for sterilizing and controlling temperature and humidity of air in a room, comprising the steps of: sending air whose temperature and humidity have been controlled to an optimal state into the room.

In the present invention, by introducing fresh air into the sterilized circulating air, the room can be maintained at a constant temperature and humidity, and the room can be kept in a fresh air condition and a sterile condition. It has the following.

Hereinafter, a sterilization temperature and humidity control device that can accomplish the method of the present invention will be described with reference to the drawings. Although one room is shown in the drawing, it is possible to sterilize and control the temperature and humidity of a desired number of rooms. Further, it is preferable that the room is configured as a constant temperature room, and an example of the constant temperature room is that the room is surrounded by pipes, the outside is covered with an outer wall made of a heat insulating material, and the temperature is controlled using a heat exchanger in the pipes. Circulate water to control the temperature of the room.

In the figure, arrows indicate the direction of fluid flow. Number 1 indicates the entire room such as a hospital room, and the air in room 1 is normally exhausted to the outside world from the exhaust pipe E located above.
If necessary, for example, a large amount of circulating air can be sucked into the cyclone 4 through an air conduit 3 connected tangentially around the cyclone 4. Normally, fresh air is taken in from fresh air introduction pipe A. A steam pipe 5 is connected to the cyclone 4,
Solid matter such as dust and dirt entrained in the intake air is separated by the cyclone 4 and discharged through the valve 22, thereby purifying the air. Further, if necessary, steam is blown in from the steam pipe 5 to sterilize the air. The air, which has been purified and sterilized by removing dust etc. by the cyclone 4, passes through a conduit 3' extending above the cyclone 4 and is then siphoned by a fan F.
It is sucked out from the clone 4 and blown into the cyclone type spray shower cooler 6. The spray shower cooler 6 communicates with the air conduit 3' which communicates with the cyclone 4 in the tangential direction of the circumference, and communicates and fixes a reflux pipe 7 extending upward. A cold water pipe 8 is placed in the area. This cold water pipe 8 is provided with a large number of spray ports 9a, 9b, 9c, . . . , which are opened into the spray shower cooler 6.
It communicates with 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 becomes small droplets from the spray ports 9a, 9b, 9c... Sprayed in wrinkles. The air that has entered the spray shower cooler 6 comes into contact with water droplets from the spray ports 9a, 9b, 9c, etc., where heat is quickly and efficiently exchanged, excess water due to cooling is condensed and removed, and insufficient water is humidified. It is saturated at a temperature approximately equal to the cold water temperature, and the reflux pipe 7
Sent from Since particulates such as odors and dust are dissolved or suspended in the water from which heat has been taken, the water is passed through a conduit 11 into a strainer 12, filtered, and returned to the cold water tank 10 through the conduit 11. Therefore, it is preferable that the filter 12 is a normal filter made by layering an adsorbent material such as activated carbon, diatomaceous earth, acid clay, or ion exchange resin. 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 of similar construction to the spray shower cooler 6, and identical parts are designated by the same numbers, with a prime sign (') appended to the numbers. Spray shower cooler 6'
Since the function of 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 machines can be arranged sequentially if desired. The air that has been cooled and humidified to saturated humidity after exiting the last spray shower cooler is still entrained and moistened by the second cyclone 13.
Completely dehydrate. Therefore, only dehydrated air with saturated humidity is sent to the chamber 1 via the reflux pipe 2. One end of the steam pipe 14 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. can. The gas discharged from the cooling water cooling compressors 15, 15' passes through condensers 16, 16', passes through an expansion valve (not shown), and cools the water in the cold water tanks 10, 10'.
Temperature detectors A ₁ , A ₂ and humidity detectors B ₁ , B ₂ are installed in room 1.
Provided inside. Impurities from the cyclones 13, 21 are discharged through conduits 24, 25. Temperature detectors C and C' are provided in the cooling water tanks 10 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 electrically coupled to compressors 15 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
In addition to having a sterilizing effect as mentioned above, it is also used to heat and humidify with steam when the outside temperature is low. 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 when the outside air temperature is low,
It works to heat the outside air. For example, if the outside temperature
When the temperature is low, around 20℃, the heat exchanger 18 lowers the temperature to 100℃.
Adjust the temperature by introducing sterile fresh air to ~110 °C.

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 chamber 1 is such that a heatproof wall 28 made of rubber or stainless steel is placed inside, and a water pipe 27 surrounds the wall 28 . Furthermore, the outside of the water pipe 27 is covered with an outer wall 26 made of a heat insulating material.
surround it with Water pipe 27 circulates water at a temperature slightly lower (for example, 2°C) than the temperature inside room 1 when the outside temperature is high, and circulates water at a temperature slightly higher than the temperature inside room 1 when the outside temperature is low. is circulated to configure room 1 into a constant temperature room that is not affected by outside air. An exhaust pipe E is provided in the chamber 1, and exhaust gas is discharged to the outside world. However, it goes without saying that it can be used repeatedly.

The operation of the sterilization temperature and humidity control apparatus of the present invention will be described in the case where room 1 is an operating room. compressor 15,
〓〓〓〓
15'... is operated to lower the water in the cold water tanks 10, 10'... to a predetermined temperature. When the water drops to a predetermined temperature, the switches of the compressors 15, 15'... open and stop according to the commands from the temperature detectors C, C'..., and when the temperature rises, they close and operate, turning ON and 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. Next, open the exhaust pipe H,
Start exhausting. The fresh air taken in passes through the first cyclone 4, the spray shower coolers 6, 6', . 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, the damper 23 is opened, and the damper 2
3' to prevent air from circulating in chamber 1, or open dampers 23, 23' or damper 23
It is also possible to partially close the air valve and bypass the air. Of course, normally the damper 23 is closed and the damper 23' is opened to circulate the air. With this configuration, the interior of the room 1 is always maintained at the optimum temperature and relative humidity.

As a result, the interior of the room 1 can be maintained at a constant temperature and constant humidity, and can be kept clean and sterile at all times.

In the example, the temperature and humidity are controlled by the cyclone 13 after cooling and humidifying to saturated humidity, so the temperature and humidity can be adjusted very easily. Without limitation, it is useful for controlling the atmosphere in a wide range of rooms such as buildings, as well as operating rooms, laboratories, vaccine production rooms, etc., and furthermore, it increases the rotational speed of the fan F and pump P. It is possible to quickly circulate the cooling air to cool the stored items in a short time, and it is also possible to sterilize the interior of the chamber 1 by stopping the pump P and blowing out steam from the steam pipe 14 and transporting it by the circulating air. Since the air 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 abnormal odors in the room. In addition, since cold and hot water is always stored in the cold water tank 10, it can be used for urgent needs and does not require a particularly large compressor, which not only saves capital investment but also consumes less electricity, and is a closed cycle system. It has many advantages such as less heat loss. Furthermore, since multiple cyclone type spray shower coolers are arranged in sequence, the cyclone can be small and temperature and humidity control can be performed with precision. 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. Furthermore, since the invention constantly takes in fresh air, it can be used with peace of mind without worrying about an increase in carbon dioxide concentration.

[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. 1... Chamber, 4... Cyclone, 6... Spray shower cooler, 13... Second cyclone, 21... Third cyclone. 〓〓〓〓

Claims (1)

[Scope of Claims] 1. A method for sterilizing and controlling the temperature and humidity of indoor air in a hospital room, etc., comprising the steps of: discharging the used air from the room; taking in fresh air; sterilizing it with steam; or a step of cooling and humidifying to saturated humidity in multiple stages; further controlling the temperature and humidity of the cooled and humidified air to saturated humidity with sterilized fresh air or steam to a desired optimum state; A method for sterilizing and controlling temperature and humidity of air in a room, comprising the steps of: sending air whose temperature and humidity have been controlled to an optimal state into the room.