JPH0640689U - Cleaning device for heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] A cleaning device for a heat exchanger in a ventilated mechanical koji device. [Structure] In the cleaning operation of the temperature and humidity adjusting means of a ventilated mechanical koji device, the heat exchanger as the temperature and humidity adjusting means is immersed in a detergent solution for a predetermined time and adhered to the inside thereof Measure the swelling of the product, drain and wash with water.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a cleaning device for a heat exchanger in a ventilated mechanical koji device.

[0002]

[Prior art]

 Conventionally, there has been almost no improvement or devising of the cleaning device for the heat exchanger of the air conditioner attached to the ventilated mechanical koji device, and nowadays, a hand-in hole is provided at a required position to facilitate cleaning. It was of a degree.

[0003]

[Problems to be solved by the device]

 When a koji substrate is ventilated in the air of warm and moist air that is ventilated during koji making, koji mold and koji matrix diffuse and float in the air, and these suspended solids stick to the heat exchanger and become stagnant. However, every time the koji manufacturing process was repeated, it accumulated and made up a pollution source.

[0006] The contaminants thus fixed are not removed by spraying water with a cleaning nozzle or the like after the work is completed, and the degree of contamination tends to increase as the number of times of koji making is repeated. Due to this situation, when a clean koji substrate was put into the culture bed during koji making, the koji substrate was contaminated by the hot and humid air contaminated in the heat exchange part, and no clean koji was obtained.

[0005]

[Means for Solving the Problems]

 This invention eliminates the above-mentioned defects, facilitates cleaning of the heat exchanger, and in order to obtain clean koji as well as complete cleaning, cleaning work of temperature and humidity adjusting means of the ventilated mechanical koji device. In the above, the heat exchanger as a means for adjusting the temperature and humidity is immersed in a detergent solution for a predetermined time to swell the cells and other contaminants that adhere to the inside, and then rinsed with water after draining. A cleaning device for a heat exchanger is proposed.

[0006]

[Action]

 Contamination adhering to the heat exchanger cannot be easily removed in a short time even if it is washed, and if it is forcibly cleaned, it may damage the fins of the heat exchanger and the heat generated in the koji after the cleaning process. It will affect the exchange.

[0007] However, if a reasonably sufficient cleaning is performed each time at the end of each koji making operation, cleaning is easy and contaminants can be prevented from accumulating, and constant heat exchange is always maintained and a clean temperature is maintained. Clean koji can be obtained by moist air.

Generally, the structure of a koji making device is roughly divided into a culture chamber and a hot / wet air adjusting means (heat exchanger). Before and after this adjusting means, a watertight shut-off means or duct is provided. This adjusting means, i.e., only the heat exchanger is soaked in water by a combination of the above, and the washing operation is performed by submerging this adjusting means in the washing liquid for a predetermined time to make it free from contaminants containing bacterial cells. After swelling the material and draining the detergent solution, by removing the foreign matter swollen by washing spray or human power, the washing work becomes easy and the koji making work can always be performed in a clean state. It is a thing. In carrying out the cleaning work, it may be considered to pressurize air or give vibration to enhance the cleaning effect.

[0009]

【Example】

 Next, the present invention will be described with reference to the accompanying drawings. In these figures, FIGS. 1 and 2 are diagrams in which a shut-off means that can be opened and closed is provided before and after the adjusting means, and in FIGS. 3 and 4, the adjusting means is provided with a suction hole and a discharge hole for hot and humid air by the structure of the duct. The lower edge line, that is, the line A-B in FIG. 3, is positioned lower so that the adjusting means is submerged in the detergent solution.

First, a description will be given with reference to FIGS. Reference numeral 1 denotes a heat-insulated main body of the culture machine, and 2 is a rotating culture bed, which divides the culture room into upper and lower parts. The upper part of the culture bed 2 is an upper chamber 3, and the lower part is a lower chamber 4. A circulation duct 5 is provided in the upper chamber 3, and a temperature / humidity adjusting means 8 including a circulation fan 6, a dehumidifying cooler 7 and a water drop removing device 7'in its path, and a reheat heater. 9 is provided.

On the other hand, the upper chamber 3 and the lower chamber 4 are connected by a duct 10, and a fan 11 for blowing air is provided in the duct 10. 12 is a temperature and humidity sensor, and 13 is a sensor for measuring the temperature of the koji substrate. Further, 14 and 14 'are watertight openable and closable shut-off means, 15 is a detergent solution injection hole, and 16' is a discharge hole, which constitutes a cleaning means. Reference numeral 17 is a high-pressure washing water supply hole provided as necessary.

During the breeding of Aspergillus oryzae, moisture is constantly evaporated from the substrate of Aspergillus due to heat generation, and the temperature and humidity of the air in the upper chamber 3 are successively increased. In this case, when the temperature and humidity exceed the set values, the circulation fan 6 is activated, and some high humidity air in the upper chamber 3 is introduced into the duct 5 and cooled by the cooler 7. A part of the dew is removed when passing through the water drop removing device 7 '. Further, it is heated with a reheat heater 9 to be dehumidified and returned to the culture chamber. If the air temperature falls below the set temperature due to the action of the cooler 7, it is heated by the operation of the reheat heater 9.

By repeating these operations, the temperature and humidity of the air in the upper chamber 3 are always controlled according to the set conditions. In order to control the product, a fan 11 is provided in the duct 10 connected between the upper chamber 3 and the lower chamber 4, and the operation is controlled by the temperature sensor 13 inserted in the koji substrate. The air in the chamber 3 is ventilated through the koji substrate layer to control the product temperature.

As described above, the koji making is carried out, but when the koji substrate is aerated, a part of spores or the like is transferred to warm / wet air, and the warm / wet air is stored in the cooler 7 as an adjusting means. While passing through, part of the spores adheres to the cooler 7 along with heat exchange, and they are successively accumulated to form a fixed state.

When such a state is exhibited, the pollutant is an organic matter, so that it decomposes and builds a hotbed of bacteria. Further, bacteria are mixed with the hot and humid air passing through during heat exchange, which causes contamination. When the spores are fixed, it is impossible to clean the spores by a simple high-pressure cleaning means.

In contrast to the cleaning under the above conditions, in the present invention, watertight shut-off means 14 and 14 'having watertightness are provided in front of and behind the cooler 7, and the shut-off means 14 and 14' are closed to close the detergent solution injection hole 15. Liquid is injected to submerge the cooler 7 and the swelling of impurities is promoted after a predetermined time has elapsed. After swelling, the wash water is drained from the discharge hole 16 and the high pressure wash water supply hole 17 The cleaning water is supplied so that the cleaning can be easily performed by cleaning with a nozzle provided in the cooler 7 or by cleaning with water from a maintenance hole (not shown).

After the complete cleaning in this way, the heat-exchanged air is clean, and the koji made from this clean air can also be kept clean.

3 and 4 show the adjusting means, that is, the cooler 7 depending on the structure of the duct, from the lines of the lower edges of the openings 18 and 19 for sucking and discharging hot and humid air to and from the incubator body 1. The adjusting means 8 is submerged in the detergent solution at a low position (like AB), and is used for injecting the detergent solution at the time of washing, accelerating swelling of contaminants, high-pressure washing means, etc. Since the operating procedure is the same as that shown in FIGS. 1 and 2, the same or similar parts are designated by the same reference numerals and the description thereof will be omitted.

[0019]

[Effect of device]

 As described above, according to the present invention, a clean koji malt is produced by the clean air obtained by easily and thoroughly cleaning the dehumidifying cooler 7 of the adjusting means, which has been a hot bed of bacteria, each time. In addition, it is useful and useful in terms of improving raw material utilization rate and quality.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an example of an apparatus for carrying out the present invention.

2 is a cross-sectional view of the device shown in FIG.

FIG. 3 is a vertical sectional view of another embodiment of the present invention.

FIG. 4 is a vertical sectional view of still another embodiment of the present invention.

[Explanation of symbols]

 2 culture bed 3 upper chamber 4 lower chamber 8 temperature and humidity adjusting means 16 cleaning means

Claims (1)

[Scope of utility model registration request] 1. In a cleaning operation of the temperature and humidity adjusting means of a ventilated mechanical koji device, a heat exchanger serving as the temperature and humidity adjusting means is immersed in a detergent solution for a predetermined time and adhered to the inside thereof. Cleaning equipment for heat exchangers, which measures the swelling of foreign substances, and drains and then rinses with water.