JP2005270589A - Deodorizing device for chemical smell in hospital using ozone gas - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deodorizing device to oxidize and decompose smell of disinfectant or aged patients in hospital using ozone gas made from oxygen and to improve odor environment in hospital. <P>SOLUTION: High-purity and high-concentration ozone with fewer oxides of nitrogen is generated from the ozone generator 4 using oxygen supplied by the oxygen supplier 1 as a material. The concentration of the generated ozone is controlled by adjusting the flow of oxygen with the electromagnetic valve 2 and the flow meter 3, led to the equipped air blower 8 through the electromagnetic valve 5, and fully deluded with air to the required and safe concentration for deodorizing, in order to be diffused effectively and evenly in the space to be deodorized. The diluted ozone is sprayed forcibly using the spraying hose 9 with the blast pressure from the air blower to the space to be deodorized and mixed, so that it can be brought into a full contact with the air in the space to be deodorized to complete the deodorizing by enhancing the oxidation of the component of the smell. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Detailed Description of the Invention

Technical field to which the invention belongs

  The present invention relates to a deodorizing apparatus for forcibly oxidizing and deodorizing odorous substances such as chemical odors in hospitals by ozone gas using oxygen as a raw material.

  Conventional ozone deodorization is deodorized by using an oxidative decomposition reaction of a chemical substance by ozone using ozone gas from an air raw material without using expensive oxygen gas in most cases. In the case of generating ozone gas from an air raw material, nitrogen in the atmosphere is also oxidized to generate a large amount of nitrogen oxides.

  In medical practice, chemical odors such as disinfectants are generally removed by ventilation and cleaning, and even if ozone deodorization is partly used, it is mostly air source ozone, and nitrogen oxides are moisture in the atmosphere. Reacts with nitrate to crystallize and reduce the ability to generate ozone, and there is a problem of accelerated corrosion of metals.

Problems to be solved by the invention

  In recent hospital environments, the problem of odor has been seriously studied, and many hospital personnel are aiming for an odorless hospital. Formalin, cresol soap solution, ethylene oxide, etc. have been used for disinfection in hospitals, but nowadays, patients and hospitalized patients react sensitively to the so-called hospital odor, so how to make clean and odorless space It is beginning to be considered as a matter of life and death in many hospitals.

  Formalin / cresol soap solution and ethylene oxide used for disinfection of hospital rooms and equipment have a very high track record of disinfection. Requires time. Furthermore, with the aging of society, there is a need to solve the aging odor in the hospital by increasing the number of bedridden elderly patients.

  Conventional ozone deodorization equipment is mostly human-type and wall-embedded type installed in buildings, and is accompanied by construction work, and it has been difficult to introduce deodorization equipment at hospitals after opening.

  An object of the present invention is to provide a machine capable of deodorizing by generating ozone gas as an oxygen raw material at an arbitrary place for an arbitrary time, paying attention to medical oxygen that is constantly used in hospitals.

Means for solving the problem

  In order to achieve the above-mentioned object, the invention according to claim 1 uses medical oxygen, which is constantly used in hospitals, as a raw material and is injected into a ceramic creeping discharge type ozone generator and does not contain nitrogen oxides. Produces high purity ozone gas. Ozone production is affected by the oxygen flow rate per hour. Therefore, the optimal oxygen flow rate of the ozone generator adopted by controlling the oxygen flow rate with a solenoid valve and a digital flow meter was secured.

  The generated high-concentration ozone gas is introduced from an ozone generator into a dilution diffusion blower through a solenoid valve through a tube having ozone resistance. The ozone gas introduced into the dilution diffusion blower is diluted by the inhaled air and dispersed in the deodorized space by the flexible diffusion hose to deodorize.

  Next, the invention of claim 2 generates ozone by using high-purity oxygen gas supplied from a PSA (Pressure Swing Adsorption) type oxygen enrichment device using zeolite instead of a medical oxygen cylinder as a raw material, and further optionally setting A possible timing device is incorporated so that the generation time can be controlled. The invention of claim 3 is an invention in which an ozone concentration detector and an odor concentration detector are incorporated in an electronic control circuit in the invention of claim 2, and the system is completely controlled in an unmanned environment. It can be automatically deodorized.

  FIG. 1 shows an embodiment of claim 1. Oxygen supplied from the oxygen cylinder 1 is guided to the flow control 3 through the electromagnetic valve 2, and the controlled optimal flow rate of oxygen is sent to the ozone generator 4. The ozone gas generated by the ozone generator passes through the electromagnetic valve 5 and enters the blower 8. The ozone air diluted to the deodorant concentration by the atmosphere in the blower is scattered and diffused in the deodorization target space via the diffusion hose 9 by the blowing pressure and deodorized.

  Claim 2 changes the oxygen cylinder 1 of FIG. 1 to a PSA (Pressure Swing Adsorption) type oxygen enrichment apparatus using zeolite, and uses oxygen extracted from the atmosphere as a raw material. It is a deodorizer that incorporates a timing device into the control circuit 6 of the flow control 5 to enable operation stop in an unattended environment.

  According to a third aspect of the present invention, an ozone concentration detector and an odor concentration detector are connected to the control circuit 6 of the flow control 5 in the apparatus of the second aspect so that the operation can be automatically stopped.

The invention's effect

  As a result of the deodorization experiment using the actual machine in the hospital, the result shown in Fig. 2 was obtained. Unlike the conventional air raw material ozone gas, even if it is used continuously for a long period of time, there is no accumulation of nitrate, and the ventilation fan motor and water pipe There was no rust acceleration of the metal parts. In addition, because it became a movable lightweight device, it was able to respond quickly to odor conditions and easily deodorize in a short time.

  It is a top view of a deodorizer   It is a graph of the odor density | concentration at the time of deodorizing implementation in a hospital.

Explanation of symbols

1 Oxygen cylinder or oxygen enricher
2 Solenoid valve (primary side)
3 Flow control
4 Ozone generator
5 Solenoid valve (secondary side)
6 Flow control control circuit
8 Blower
9 Ozone air diffusion hose

Claims (3)

  By installing a blower for diluting ozone gas and a flexible hose for diffusing ozone gas to an ozone gas generator using medical oxygen gas as a raw material, and oxidizing and decomposing odorous substances such as disinfectants in hospitals by spraying ozone gas at a uniform concentration Deodorizing machine characterized by deodorizing.   A deodorizing machine characterized in that a PSA oxygen enrichment device is built in the device of claim 1, a timed device is attached, and a function of generating and stopping ozone gas in an unattended environment is added.   A deodorizing machine characterized in that an ozone concentration detector and an odor concentration detector are incorporated in the apparatus of claim 2 and the generation of ozone is controlled by electronic control so that deodorization is fully automated.

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