JPH11346645A - Washing and sterilizing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a washing and sterilizing machine having a simplified structure, capable of washing and sterilizing a carrying equipment for carrying meats, etc., in several seconds, facilitating the sanitary control of the carrying equipment, etc., and useful for butcheries, etc., by forming a medium-heating member from an electromagnetic heating device. SOLUTION: This washing and sterilizing machine 1 used for one or more of a carrying equipment 6 for carrying meats, its fittings and its peripherals comprises a steam-generating member 2 for generating steam, a medium-heating member 4 for heating the steam to form the >100 deg.C sterilizing heated medium, and a nozzle 5 for jetting the washing and sterilizing medium on the carrying device 6, etc. Therein, at least the medium-heating member 4 is formed from an electromagnetic heating device. The electromagnetic heating device receives a laminated structure 12, 22 or 32 having many small passages formed in the direction orthogonal to the axis of a pipe member 11, 21 or 31 in the pipe member 11, 21 or 31 on which an exciting coil 13, 23 or 33 is wound. The magnetic flux of magnetic force lines generated by the exciting coil 13, 23 or 33 is thus changed to subject the whole body of the laminated structure 12, 22 or 32 to an induction heating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cleaning and sterilizing at least one of transport equipment for transporting meat or meat made of these processed products in a slaughterhouse, a meat factory, etc., its auxiliary equipment, and its peripheral equipment. In order to wash and sterilize efficiently, in many cases, it is 400-
The present invention relates to an extremely compact washing and disinfecting machine capable of generating superheated steam at 500 ° C. or a predetermined washing and disinfecting medium containing the overheated steam.

[0002]

2. Description of the Related Art In recent years, the outbreak of food poisoning caused by O-157 has led to the development of HACs throughout the food distribution system.
There is an increasing demand for the establishment and further strengthening of the sanitation management system on the premise of the introduction of CP. Such demands are particularly severe for slaughterhouses, meat factories, and the like, which are located upstream of the Food Distribution Agency.

[0003] In slaughterhouses, meat factories, etc., various types of conveyors such as belt type conveyors and hooks are frequently used to move processed meat products to the next step. The actual situation is that cleaning and sterilization of ancillary equipment of the transport equipment or cleaning and sterilization of peripheral equipment around walls and floors in a meat factory where the transport equipment is installed has not been sufficiently performed.

[0004]

Therefore, it is conceivable to carry out washing and sterilization of transport equipment and the like with steam at about 100 ° C. which can be easily generated. However, since it is necessary to secure a processing time of several minutes, there arises a problem that the nozzle for spraying steam becomes large. In many cases, there is not enough space around transport equipment in slaughterhouses and meat factories, and it is necessary to avoid a large nozzle portion.

Therefore, if superheated steam at 400 to 500 ° C. is used in order to reduce the processing time and to avoid an increase in the size of the apparatus, the processing time is only a few seconds and the nozzle can be reduced in size. If an attempt is made to obtain superheated steam of up to 500 ° C., the generator must have a sufficient pressure resistance, so that it must be a very large device.

According to the present invention, a high-temperature washing and sterilizing medium is generated using a compact apparatus, and the washing and sterilizing medium is sprayed from a compact nozzle to remove meat widely used in slaughterhouses, meat factories and the like. An object of the present invention is to provide a cleaning and sterilizing machine that can perform cleaning and sterilization of transporting equipment and the like in a few seconds.

[0007]

A first aspect of the present invention is to solve the above-mentioned problems.
The described invention is a cleaning and sterilizing machine for one or more of a transport device for transporting meat, an accessory device thereof, and peripheral equipment thereof, wherein a steam generating section for generating steam, and a A cleaning / sterilizing machine comprising a medium heating unit serving as a sterilizing heating medium having a temperature of more than 0 ° C., and a nozzle unit for spraying the cleaning / sterilizing medium onto the transport device or the like, wherein at least the medium heating unit is configured by an electromagnetic induction heating device. According to the electromagnetic induction heating device, a cleaning and disinfecting medium using superheated steam exceeding 100 ° C. can be efficiently generated. In addition, although the steam generation unit can also be configured by an electromagnetic induction heating device, a normal small boiler or a low-pressure steam source in a factory can be used.

According to a second aspect of the present invention, there is provided a cleaning and disinfecting machine for at least one of a transport device for transporting meat, an accessory device thereof, and peripheral equipment thereof, wherein a steam generating section for generating steam, A heating air generating unit for generating air, a medium heating unit for heating only the steam, or only the heating air, or a mixed gas of the steam and the heating air to be a cleaning and sterilizing medium at a predetermined temperature; A nozzle unit for spraying a medium onto the transport device or the like, and at least the medium heating unit is configured by an electromagnetic induction heating device. According to the electromagnetic induction heating device, it is possible to efficiently generate a cleaning and disinfecting medium using superheated steam exceeding 100 ° C., heated air, or a mixed gas of superheated steam and heated air. In addition, when performing both cleaning and sterilization, a cleaning and sterilizing medium using superheated steam is used, and when performing mainly sterilization, a cleaning and sterilizing medium using only heated air or a mixed gas of superheated steam and heated air can be selectively used. . In addition, although the steam generation unit can also be configured by an electromagnetic induction heating device, a normal small boiler or a low-pressure steam source in a factory can be used.
In addition, the heating air generating unit can also be constituted by an electromagnetic induction heating device, but a normal heating dryer can be used.

According to a third aspect of the present invention, there is provided a laminated structure in which the electromagnetic induction heating device has a plurality of small passages formed in a pipe member around which an exciting coil is wound in a direction intersecting the axis of the pipe member. The cleaning / sterilizing machine according to claim 1 or 2, wherein the body is housed, the magnetic flux of the magnetic field lines generated by the coil is changed, and the entire laminated structure is induction-heated. The washing and disinfecting medium can be agitated by a large number of small passages in a direction intersecting with the axis.
It becomes efficient uniform heating. Therefore, outer diameter 3-6cm,
Using a method of electromagnetic induction heating of a laminated structure housed in a very compact pipe member having a length of 15 to 30 cm, 1 to 1.5 atm, superheated steam exceeding 100 ° C, or heated air, or superheated steam It is possible to obtain a cleaning and disinfecting medium using a mixed gas of heated air. Claims 1 and 2
In the above, when the steam generation unit and the heated air generation unit are also the electromagnetic induction heating device having the above configuration, the outer diameter is 3 to 6 cm and the length is 15 to
Water can be evaporated and air can be heated to the temperature of steam using a method of electromagnetic induction heating of a laminated structure housed in a very compact pipe member of 30 cm.

The invention according to claim 4 is the cleaning / sterilizing machine according to claim 3, wherein the electromagnetic induction heating device can heat the cleaning / sterilizing medium to 400 to 500 ° C. With the use of a high-temperature cleaning and sterilizing medium, cleaning and sterilization can be performed in a few seconds through a compact nozzle.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a view showing a device configuration of a cleaning and sterilizing machine according to the present invention. In FIG.
Comprises a steam generator 2, a heated air generator 3, a medium heater 4, and a nozzle 5.

Each of the steam generating section 2, the heated air generating section 3 and the medium heating section 4 is constituted by an electromagnetic induction heating device and is made of a very compact Teflon or silicon nitride having an outer diameter of 3 to 6 cm and a length of 15 to 30 cm. Non-metallic pipe member 1
Exciting coils 13, 23, 33 are wound around 1, 21, 31, and high-frequency inverters 14, 24,
34, and the laminated structure 12, 2 is provided in the pipe member.
2, 32 are formed.

The high frequency inverters 14, 24, 34
It has a performance of 5 to 150 kHz. Laminated structure 1
Nos. 2, 22, and 32 have a structure in which a ferromagnetic plate material such as SUS447J1 is processed so as to increase the surface area per weight, and at the same time, a flowing fluid causes diffusion and mixing.

The steam generator 2 has a level meter 15 for detecting a water level to the extent that at least half of the laminated structure 12 is immersed,
An electromagnetic on-off valve 16 for supplying water to maintain the water level and an on-off valve 17 are attached. When the water in the laminated structure 12 is heated and reaches 100 ° C., it evaporates to become steam. For every gram of water at 20 ° C., 80 cal is consumed for heating from 20 ° C. to 100 ° C., and 540 for evaporation at 100 ° C.
cal is consumed and about 1.7 liters of water vapor is generated. The amount of steam to be generated is determined by the input of the high frequency inverter 14. Without using the steam generator 2, the heated air generator 3
When using only the valve, the on-off valve 17 is closed.

The heating air generator 3 includes a temperature sensor 25
, A blower 26 and an on-off valve 27 are attached.
The air sent from the blower 26 is heated by the laminated structure 22 and is controlled by the temperature sensor 25.
4 generates heated air at 100 ° C., for example.
The amount of the generated heated air is determined by a damper (not shown) attached to the blower 26. When only the steam generator 2 is used without using the heated air generator 3, the on-off valve 27 is closed.

Either steam alone, heated air alone, or a mixture of steam and heated air at a predetermined ratio from the steam generator 2 and the heated air generator 3 reaches the medium heater 4. The predetermined ratio of the gas mixture is adjusted by the degree of opening of the on-off valves 17 and 27. A temperature sensor 35 is attached to the medium heating unit 4, and the temperature (400 to 500 ° C.) of the generated cleaning and sterilizing medium is controlled by a high frequency inverter 34. For example, to heat from 100 ° C. to 427 ° C. per 1.7 liters of steam at 100 ° C., 156 ca
l is consumed and the volume expands from 1.7 liters to 3.2 liters.

The high-temperature cleaning and sterilizing medium thus generated is passed through the inside of the pipe 51 and moved to the nozzle 5 while preventing the temperature from decreasing as much as possible. The nozzle portion 5 has a shape elongated in a direction perpendicular to the traveling direction of the conveyor 6, and has a structure capable of ejecting a high-temperature cleaning and sterilizing medium over substantially the entire length of the conveyor 6 in the width direction. In addition, although the stainless steel endless belt type conveyor 6 was illustrated as a conveyance apparatus which conveys meat, the conveyance apparatus by the hook which hooks a meat on the hook suspended from the circulation chain can also be used. The shape of the nozzle portion 5 is appropriately determined according to the transport device to be cleaned and sterilized. Further, the nozzle unit 5 can be installed in a fixed type or a movable type with respect to at least one of the attached device and its peripheral equipment as well as the transport device body that transports the meat.

The superheated steam has not only a sterilizing power but also a detergency for blowing off deposits such as meat oil. In particular, steam superheated by electromagnetic induction heating using a laminated structure described later is placed in a narrow space of 3 to 6 cm in outer diameter and 15 to 30 cm in length.
Since the energy of ２０20 kW is input, the steam is activated superheated steam, and the cleaning power and the sterilization power may be increased. However, in the case of cleaning sterilization using superheated steam, the temperature of the conveyor 6 becomes 100 ° C.
As long as the temperature is lower than 0 ° C., minute water droplets adhere to the surface of the conveyor 6. Heated air has a sterilizing power comparable to superheated steam, but its cleaning power is inferior to superheated steam. However, water droplets are not generated on the surface of the conveyor 6. It has the function of evaporating water droplets on the surface of the conveyor 6. When the cleaning and sterilizing medium is a mixture gas of superheated steam and heated air, the predetermined cleaning power and sterilizing power are maintained by the ratio of the superheated steam and heated air,
It is possible to set operating conditions that do not leave water drops on the surface of the conveyor 6. In addition, it is also possible to use a method in which the surface of the conveyor 6 is dried by performing strong cleaning and sterilization only with the superheated steam in the beginning, and cleaning and sterilizing only the superheated steam and the heated air or the heated air in the second half. Furthermore, if the superheated steam is generated from high-purity water and the heated air is also generated from clean air that has passed through a filter, there is no risk of contaminating the conveyor 6 with the cleaning and sterilizing medium.

(Second Embodiment) FIG. 1 shows a case where a combustion type boiler or a low pressure steam source of a factory is used for the steam generation unit 2 and a heating type dryer is used for the heating air generation unit 3.
If only steam is generated, or if air is simply heated to 100 ° C., a normal boiler or dryer can be formed reasonably compact.

(Third Embodiment) FIG. 1 shows a case where the heated air generator 3 is omitted and the steam generator 2 and the medium heater 4 are directly connected. When only the superheated steam having the above-mentioned excellent properties is used as the cleaning and disinfecting medium, it can be formed more compact only for the generation of the superheated steam. Also in this case, a normal boiler or a low-pressure steam source of a factory can be used for the steam generating section 2.

Next, a preferred example of a laminated structure having a large heat transfer area and causing turbulent diffusion will be described with reference to FIGS. In addition, it is preferable to use the same structure in each electromagnetic induction heating device even if the size of the laminated structure is different.

As shown in FIG. 2, a first metal plate 531 and a flat second metal plate 532 which are bent in a zigzag mountain shape are alternately laminated to form a cylindrical laminate as a whole. As a material of the first metal plate 531 and the second metal plate 532, a ferritic stainless steel such as SUS447J1 is used.

As shown in FIG. 3, the first metal plate 531
Are arranged so as to be inclined by an angle α with respect to the central axis 534, and the peaks (or valleys) 533 of the first metal plates 531 adjacent to each other with the second metal plate 532 interposed therebetween intersect. It is arranged in. Then, the adjacent first metal plate 5
At the intersection of the peaks (or valleys) 533 in 31, the first metal plate 531 and the second metal plate 532 are welded by spot welding and joined to be electrically conductive.

After all, between the first metal plate 531 and the second metal plate 532 on the near side, the first small flow path 5 inclined by the angle α is provided.
35 is formed, and between the second metal plate 532 and the first metal plate 531 on the back side, the second small flow path 53 inclined by an angle -α
6, the first small flow path 535 and the second small flow path 53
6 intersect at an angle of 2 × α. Also, the first metal plate 53
On the surface of the first or second metal plate 532, a hole 537 is provided as a third small flow path for generating a turbulent flow of the fluid. Furthermore, the surfaces of the first metal plate 531 and the second metal plate 532 are not smooth, but are provided with fine irregularities 538 by satin finish or embossing. The unevenness 538 is negligibly small compared to the height of the peak (or valley) 533.

When a high-frequency current is applied to the exciting coils 13 and 33 to apply a high-frequency magnetic field to the laminated structures 12, 22 and 32, an eddy current is generated in the entire first metal plate 531 and the second metal plate 532. The laminated structures 12, 22, 32 generate heat. At this time, the temperature distribution is an eyeball shape extending in the longitudinal direction of the first metal plate 531 and the second metal plate 532, and heat is generated more in the central portion than in the peripheral portion, and water or water vapor flowing in the central portion is generated. It is advantageous for heating.

Also, as shown in FIG.
Intersecting first and second small flow paths 535 and 536 are formed in the inside and the second 32, and diffusion between the periphery and the center is performed. In addition, the presence of the hole 537 forming the third small flow path , First
Diffusion in the thickness direction between the small flow path 535 and the second small flow path 536 is also performed. Therefore, these small channels 535, 53
6,537 causes macroscopic dispersion, emission, and volatilization of water or water vapor throughout the laminated structures 12, 22, 32. In addition, microscopic diffusion, emission, and volatilization also occur due to minute irregularities 538 on the surface. As a result, water or steam passing through the laminated structures 12, 22, 32 becomes a substantially uniform flow, and the first metal plate 531 and the second metal plate 532 are formed.
Uniform contact opportunity with the fluid. As a result, uniform heating of water or steam is ensured.

By the way, the thickness of the metal plates 531 and 532 is
30 μm or more and 1 mm or less, depending on the high-frequency current generator.
Frequency of the high-frequency current is in the range of 15 to 150 kHz.
Are preferred. Metal plate thickness is 30μm or more and 1mm
If it is below, it is easy to input power and the heat transfer area must be large.
It is easy to secure a small flow path by processing the waveform etc.
You. The frequency used is in the range of 15 to 150 kHz.
In this case, iron loss of the excitation coil and loss of the switching element
Loss can be prevented. In particular, as a frequency band with low loss
Is 20 to 70 kHz. In addition, the laminated structure 12,
22, 32 1cm ^ThreeHeat transfer area per unit is 2.5cm
^TwoThose described above are preferred. Laminated structures 12, 22,
32 1cm^Three2.5cm per surface area^TwoThat's it
More preferably 5cm^TwoLaminate metal plates so that
Then, the efficiency of heat exchange can be increased. Also laminated
1cm surface area of structure 8^TwoVolume of fluid to be heated
But 0.4cm^ThreeThe following are preferred. Laminated structure
1cm surface area of body 12,22,32^TwoFluid volume per
0.4cm^ThreeBelow, more preferably 0.1 cm^Threeless than
Then, rapid response of heat transfer to the fluid is obtained.

It has been confirmed that in the heating by the laminated structure having the above structure, the conversion efficiency from electric energy to heat energy is extremely high. For example, 100m
When the laminated structures 12, 22, and 32 having an m diameter, a length of 200 mm, and a surface area of 2.2 to 6.2 m ² are used, the film thickness of the fluid (the amount of water film per 1 cm ³ ) is 0.5 to 0.2. Since the metal plates 531 and 532 forming the laminated structures 12, 22, and 32 are thin, the temperature difference is extremely small, and heat transfer can be quickly promoted. Therefore, even if the medium heating unit 4 is particularly compact, it is possible to generate a large amount of cleaning and sterilizing medium. Particularly, when superheated steam is used as the cleaning and disinfecting medium, the superheated steam is exposed to the laminated structures 12, 22, and 32 having strong electric and magnetic fields, and is activated with excellent detergency and sterilization power. It may be a medium.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The amount of cleaning and disinfecting medium to be generated is determined by the width and speed of the conveyor, the heating time required for cleaning and disinfecting, and the like. In the case where only superheated steam is used as the cleaning and sterilizing medium, for example, under the following conditions, superheated steam temperature: 427 ° C. Belt conveyor width: 60 cm Belt conveyor moving speed: 180 cm / min Sterilization time required for sterilization: 1 second Superheated steam spray rate: 20 cm / sec The required amount of superheated steam is 3 × 60 × 20 = 3600 cm ³ = 3.6 liters per second. In this case, it is necessary to convert 1.1 g of water per second to 427 ° C. superheated steam. About 0.85 kcal / sec
(3600 kcal / h) is required. Assuming that the heat generation effect of electric power is 90%, the required electric energy is about 3.2 kWh.
Becomes

In this case, in a slaughterhouse, a meat factory, etc.
Washing and sterilization of meat transport conveyor, 100 ℃ or more,
In many cases, it can be carried out with an extremely compact apparatus capable of generating superheated steam at 400 to 500 ° C.

Specific examples of dimensions are as follows (unit: cm)
It is. Pipe member of steam generating section 2 6φ × 30H Pipe member of heated air generating section 3 6φ × 30H Pipe member of medium heating section 4 6φ × 30H Nozzle section 5 60W × 3L × 3H High frequency inverter 14,24,34 30W × 20H × 30L

[0033]

As described above, according to the first to fourth aspects of the present invention, the washing and sterilization of the transport equipment for transporting meat installed in a slaughterhouse, a meat factory, or the like is performed at 100 ° C. or more. Preferably, it is performed at a high temperature of 400 to 500 ° C. using a medium having strong detergency and sterilizing power by electromagnetic induction heating. In addition, such a powerful cleaning and sterilization can be performed with an extremely compact device by using an electromagnetic induction heating device.

In particular, according to the second aspect of the present invention, only the superheated steam, only the heated air, or a mixed gas of the superheated steam and the heated air can be arbitrarily selected as the cleaning and sterilizing medium. The cleaning sterilization medium can be adjusted according to the required degree of cleaning sterilization.

[Brief description of the drawings]

FIG. 1 is a diagram showing the configuration of the cleaning / sterilizing machine of the present invention.

FIG. 2 is an overall perspective view of a laminated structure used in a cleaning and sterilizing machine.

FIG. 3 is a detailed structural view of a laminated structure used in the cleaning and sterilizing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cleaning / sterilizer 2 Steam generation part 3 Heated air generation part 4 Medium heating part 5 Nozzle part 6 Conveyor (conveyance apparatus) 11, 21, 31 Pipe member 12, 22, 32 Stacked structure 13, 23, 33 Excitation coil 531 First 1 metal plate 532 second metal plate 535 first small channel 536 second small channel 537 third small channel

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsutaro Ogushi 5-30-7 Shiba, Minato-ku, Tokyo Inside Nippon Metal Corporation (72) Inventor Takehisa Konishi 5-30-7 Shiba, Minato-ku, Tokyo Nippon Metal Co., Ltd.

Claims (4)

[Claims] 1. A cleaning and disinfecting machine for one or more of a transport device for transporting meat, an accessory device thereof, and peripheral equipment thereof, wherein a steam generating section for generating steam, and 100 A cleaning and disinfecting machine including a medium heating unit that uses a disinfecting heating medium having a temperature of more than 0 ° C. and a nozzle unit that sprays the cleaning and disinfecting medium onto the transport device and the like, and at least the medium heating unit includes an electromagnetic induction heating device. 2. A cleaning / sterilizing machine for one or more of a transporting device for transporting meat, an accessory device thereof, and peripheral equipment thereof, wherein the steam generating portion generates steam, and the heating air generates heating air. A generating unit, a medium heating unit that heats only the steam or only the heated air, or a mixed gas of the steam and the heated air to be a cleaning sterilization medium exceeding 100 ° C., and the cleaning and sterilizing medium is the transport device. A cleaning and sterilizing machine comprising: a nozzle unit for spraying the electromagnetically heated device; 3. The electromagnetic induction heating device houses a laminated structure in which a number of small passages in a direction intersecting with the axis of the pipe member are formed in a pipe member wound with an exciting coil. The cleaning / sterilizing machine according to claim 1 or 2, wherein a magnetic flux of a magnetic field line generated by the coil is changed, and the whole of the laminated structure is induction-heated. 4. The cleaning / sterilizing machine according to claim 3, wherein the electromagnetic induction heating device can heat the cleaning / sterilizing medium to 400 to 500 ° C.