JPH083909Y2 - Aseptic high humidity low temperature refrigerator - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention is a "sterile state and a high degree of sterilization" necessary for the storage of aquatic seafood such as sea urchin ovaries, which is easy to slip and is easily damaged. The present invention relates to an aseptic high-humidity low-temperature refrigerating apparatus which has improved use efficiency of "wet and low-temperature air" (hereinafter simply referred to as cold air) and work efficiency.

“Prior art” It is very difficult to preserve fresh seafood, especially “sea urchin” whose harvest time varies depending on the location.

The "sea urchin" removes the "ovary" from the shell and
It is generally stored in a cool place with the addition of 30% to 30% salt.

However, in normal refrigeration, it is dried and the deterioration of quality is prevented by various bacteria.

Conventionally, a gas-liquid contact type is known as a method for controlling the inside of a refrigerator from low temperature to high humidity.

(See JP-A-56-26183, JP-A-56-168071 and JP-A-54-148970.) "Problems to be solved by the invention" However, in the above conventional refrigerating method, a cooler is provided in the refrigerating chamber. Is set so that frost is formed on the cooler mostly when moist air is supplied.

Therefore, in order to remove the frost, the cooler is stopped to raise the temperature in the adiabatic prefabricated refrigerating room, or defrosting is performed by the built-in heater, which is troublesome and extremely troublesome for defrosting. Moreover, it is not possible to prevent deterioration of quality.

Further, in one of the gas-liquid contact type, the cooling device rapidly cools the warm food conveyed to the belt conveyor, so that the device itself is extremely complicated and the cost is inevitable.

The other one has a drawback that the entire structure is complicated and high cost is unavoidable because it is cooled after being humidified by a humidification tower provided outside the refrigerator.

Furthermore, the room is divided into upper and lower parts by partition walls,
A cooling passage is provided between both ends of the partition wall and the indoor side wall, and a cooling fan is provided in each of the feeding passages, and cold air is circulated in the cooling chamber by communicating with the cooling chamber outside. As a refrigerating device provided with an air purifying device for cleaning and a chiller unit, Japanese Utility Model Publication No. 54-148970 is known, which solves the above problems. However, the high-humidity and low-temperature clean air sent into the refrigerating chamber passes between the sea urchins of a cart carrying a large number of raw products such as sea urchins and rises while being heated, and the heated air is Most of it is forcibly taken in through the intake port and collected in the air purifier,
There is a possibility that the air that is not collected due to the deviation from the intake port may rise and drift near the partition wall, and there remains a problem that the low-temperature air circulation efficiency in the refrigerating chamber decreases.

Further, the above-mentioned temperature-raised air was easily accumulated in the corner portion of the room apart from the intake port. In view of the above-mentioned problems of the prior art, the present invention is an aseptic high-humidity low-temperature device capable of maintaining the quality of raw foods in the refrigerating room and improving the low-temperature air circulation efficiency in the refrigerating room while achieving low cost. Is to provide.

"Technical means for solving problems" The following means are taken to solve the above technical problems.

The interior of the room is divided into upper and lower parts by partition walls, and a cooling passage is provided between both ends of the dividing wall and the indoor side wall, and a ventilation fan is provided in each of the transmission passages. In an aseptic refrigerating device equipped with an air purifying device and a chiller unit that circulate and clean the cold air in the refrigerating chamber by communicating with each other, the above-mentioned delivery is performed on the refrigerating chamber inner wall in the upper space divided by the partition wall. Air inlets for introducing high-humidity and low-temperature clean air from the air purifier are provided at positions close to the passages, respectively, and endothermic air is provided at a position below the refrigerating chamber inner wall in the lower space divided by the partition wall. An air inlet for collecting to the air cleaning device is provided, and ventilation guide walls are provided so as to be inclined downward from the side wall of the refrigerating chamber near the installation positions of the blower fans toward the inner bottom surface, approximately at the middle position of the partition wall. Is provided with a return flow path for guiding the endothermic air to the upper space, and the air cleaning device is provided with a brine tank connected to the lower water tank, and the brine is collected from the lower water tank, cooled, and again cooled downward. An aseptic high-humidity low-temperature refrigerating apparatus comprising a chiller unit that can be circulated in a water tank.

"Operation" 0.3% of water is removed by an air purifier installed outside the refrigerator compartment.
-2 ° C to + due to brine which is formed into fine particles of about micron size and is cooled by a chiller unit and circulated.
The temperature of the refrigerating room is maintained at a low temperature of around 5 ° C, and the sterile high-humidity air is always forcedly circulated to the refrigerating room. Is automatically controlled to keep a predetermined low temperature.

Especially, since the refrigerator is not equipped with a cooler, no frost is formed and the temperature of the refrigerator is -2.
Since it is set to around ℃ and forcedly circulates with high-humidity cold air, it can be preserved for a long time without compromising the freshness of raw fish such as inshore tuna and sea urchin ovaries.

In addition, the high-humidity and low-temperature clean air sent from the air purifier into the refrigerating room passes between the sea urchins of a cart carrying many raw products such as sea urchin in the refrigerating room and rises while being heated. Most of the heated air is forcibly sucked through the intake port and is collected in the air cleaning device.

Further, the air that has deviated from the intake port and is not collected rises to the partition wall, but the heated air is the high-humidity and low-temperature clean air that is blown into the refrigerating chamber from the blower fan and the blower port. Due to the negative pressure generated by the air supply, the air is forcibly sucked up to the upper space side via the return flow path, and is mixed with the high-humidity and low-temperature clean air and is blown to the lower space.

"Embodiment" FIG. 1 shows one embodiment of the aseptic high-humidity low-temperature refrigerator according to the present invention, which is shown in a schematic sectional view. The structure and effects of the device will be described as an example.

Reference numeral 1 is a heat-insulated prefabricated refrigerating room 1. The heat-insulated prefabricated refrigerating room 1 has front and rear walls and left and right side walls assembled with a steel sheet whose inner and outer surfaces are coated with vinyl chloride, and has a single-opening or double-opening sliding door 2.2 at the opening. Become.

In the heat-insulating prefabricated refrigerating compartment 1, a partition wall 101 that divides the room into upper and lower spaces 109a and 109b is held through an angle on the inner wall thereof, and between each end of the partition wall 101.101 and the indoor side wall. A feed passage (circulating left / right flow path) 103.104 is formed, and substantially the center of the partition wall 101, for example, the partition walls 101 and 101.
A return flow channel (circulation central flow channel) 102 is formed between and. In addition, in the refrigerating chamber inner wall in the upper space 109a divided by the partition wall 101.101, each of the feeding passages 10
An air supply port (mounting port for high-humidity cold air supply pipe) 108.108 for introducing high-humidity and low-temperature clean air from the air cleaning device 4 is provided in a position close to 3.104, and a lower space divided by one partition wall 101.101. An intake port (mounting port for heat absorbing air) 107 for collecting heat absorbing air to the air cleaning device 4 is formed at a position below the wall of the refrigerating chamber in 109b.

In addition, the heat insulating prefabricated refrigerating room 1 is provided with the above-mentioned feeding passages 103.
A blower fan 3.3.3.3, which blows high-humidity and low-temperature clean air from the air supply port 108.108 to the lower space 109b, is arranged at 104 through the frame.

Further, the heat-insulating prefabricated refrigerating compartment 1 is provided with a blower guide wall 105.105 which is inclined downward from the side wall of the refrigerating compartment near the installation position of each blower fan 3.3.3.3.

Reinforcing blocks 106.106 ... Are attached in parallel to the outer upper wall of the heat-insulating prefabricated refrigerating chamber 1 at several points, if necessary.

When the high-humidity cold air is guided to the lower space 109b of the refrigerating chamber, the wind direction is sent upward, centrally, and downward by swinging the wind direction adjusting device (not shown).

The air cleaning device 4 is known in Japanese Examined Patent Publication No. 60906/44906 and the like, and therefore the illustration of the internal mechanism of the air cleaning device 4 is omitted.

The air cleaning device 4 and the adiabatic prefabricated refrigerating chamber 1 are connected via an air supply pipe 5 and an intake pipe 6 for recovered air, and the heat absorbing air in the adiabatic prefabricated refrigerating chamber 1 is attached to the air cleaning device 4 side. It is collected in the air cleaning device 4 via an intake fan 7 such as a blower.

When the collected endothermic air is introduced into the cyclone, the endothermic air is sprayed with the brine pumped through the injection pump 8 and the water supply pipe 9, and the endothermic air causes germs together with brine by centrifugal force. While adhering to the cyclone wall, it falls into the lower water tank 10 and is separated and removed.

The lower water tank 10 and the chiller unit 11 are connected with two pipes 12.12, and a valve 13 and a brine circulation pump 14 are arranged on the side of the recovery pipe to reduce the water temperature in the lower water tank 10 to a low temperature. The brine 151 is retained and, if necessary, the brine 151 is replenished from the separately provided brine ink 15.

In this way, since the predetermined water level in the lower water tank 10 is maintained, the air cleaning device 4 through the air supply pipe 5
The high-humidity cold air is continuously supplied to the adiabatic prefabricated refrigerating room 1.

Since the device of the present invention is constructed as described above, the high-humidity cold air sent from the air purifying device 4 is sent from the air sending pipe 5 to the air inlet 10 formed on the upper back wall of the heat insulating prefabricated refrigerating chamber 1.
It is sent to the back of the air supply fan 3.3.3.3 through 8.108.

The high-humidity cold air supplied into the heat-insulating prefabricated refrigerating room 1 is supplied to the left and right channels by the air supply fans 3.3.3.3 installed on the left and right sides.
It is sent to the lower space 109b of the refrigerator compartment 1 through 3.104.

A cart is previously loaded into the lower space 109b of the refrigerator compartment 1,
Since many raw things such as sea urchins are loaded on the rack of the cart, the high-humidity cold air passes between these raw things,
The temperature rises, and most of it is guided to the intake port 107 formed in the lower space 109b of the refrigerating chamber, and the heated air that has deviated from the intake port 107 and has not been recovered rises to the partition wall 101 side, and the blower fan With 3.3.3.3 and the negative pressure generated by the supply of high-humidity and low-temperature clean air supplied from the air supply port 108 into the refrigerating chamber, it is forcibly sucked up to the upper space 109a via the return flow path 102, It is mixed with high-humidity low-temperature clean air and blown again to the lower space 109b.

Next, the temperature-elevated air whose temperature has been raised and collected from the intake port 107 is sucked into the air cleaning device 4 side through the intake pipe 6.

The heated air sent to the lower part of the refrigerating chamber by the air supply fan 3.3.3.3 is evenly sent to each shelf of the cart by the wind direction plate which rotates at a required angle.

When the high-humidity cold air is blown downward by the rotation of the blower fan 3.3.3.3, it passes through the passages 103.104 on both sides and is supplied downward to the racks of the above cart along the blower guide walls 105.105. As a result, the lower part of the refrigerating room can fully function as a low temperature refrigerator.

When dust and germs in the air come into contact with the sprayed brine and enter the brine, such dust and germs can never escape from the brine unless the brine evaporates and disappears. .

Furthermore, when the brine is discharged little by little from the overflow pipe 16 of the water tank during operation of this device, new brine is supplied from the brine tank 15. Further, the brine in the water tank is periodically discharged from the drain pipe 17 to be replaced with new brine.

"Effect of the device" The device of the present invention has the above-mentioned configuration, and the high-humidity and low-temperature clean air sent from the air cleaning device into the refrigerating room is the sea urchin of the cart that is loaded with many raw products such as sea urchin in the refrigerating room. After passing through the space, the temperature of the heated air rises, and most of the heated air is forcibly sucked from the intake port and collected in the air cleaning device.

Further, the air that has deviated from the intake port and is not collected rises to the partition wall, but the heated air is the high-humidity and low-temperature clean air that is blown into the refrigerating chamber from the blower fan and the blower port. Due to the negative pressure generated by the air supply, the air is forcibly sucked up to the upper space side via the return flow path, and is mixed with high-humidity and low-temperature clean air to be blown to the lower space, thereby improving the circulation efficiency of the low-temperature air. Since it is a very good one, the microscopic dust in the room sealed with a heat insulating material, the air containing bacteria and the like and the bacteria attached to raw materials such as sea urchin and tuna are forcibly sent into the air cleaning device, Aseptic air is formed in the air purifying device, and at the same time, high-humidity low-temperature air, that is, cold air, is supplied and circulated to the adiabatic prefabricated refrigerating room.

In addition, by providing a downwardly inclined ventilation guide wall inside the refrigerating room, it is possible to smoothly blow air to the carts in the lower space of the refrigerating room by loading sea urchins, etc. The air supply port shall be provided close to the air blower fan, and the return flow path shall be provided at approximately the center of the partition wall that divides the room into upper and lower spaces, and it should be displaced from the intake port provided in the lower space to the air cleaning device. The temperature-raised air that has risen without being collected is introduced into the upper space by the blow of the fan and the negative pressure of the inflow of clean air from the air supply port through the return flow path, and is mixed with the clean air and again in the lower space. Since it is designed to ventilate to, the problem of convection in the vicinity of the partition wall instead of being collected from the intake port as in the past and reducing the refrigeration efficiency is solved, and the low temperature air circulation efficiency in the refrigeration room is improved. Can be tough It is a use.

Further, conventionally, the temperature-raising air was likely to stay in the lower space corner of the room, but the inclined wall facilitates guiding the temperature-raising air to the intake port, and the temperature-raising air stays in the lower space corner. That fear has also been resolved.

Moreover, in the device of the present invention, the heat insulating prefabricated refrigerating room and the external air cleaning device are connected to each other through the pipe, and at the same time, the air cleaning device, the chiller unit and the brine tank are also connected to each other through the pipe. The structure is simple and easy to handle.

Therefore, it is possible to provide an aseptic high-humidity low-temperature device capable of maintaining the quality of raw foods in the refrigerating compartment while improving the low-temperature air circulation efficiency in the refrigerating compartment while achieving low cost.

[Brief description of drawings]

 The figure is a schematic cross-sectional view of an aseptic high-humidity low-temperature refrigerator. References 1: Insulated prefabricated cold room 3: Fan 4: Air purifier 5: Air supply pipe 6: Intake pipe 11: Chiller unit

Claims (1)

[Scope of utility model registration request] 1. A refrigerating chamber which divides the room into two parts by a partition wall and which is provided with a blowing passage between each end of the dividing wall and a side wall of the room, and each of which has a blower fan. In an aseptic refrigerating device comprising an air purifying device and a chiller unit for circulating and purifying cold air in the refrigerating chamber by communicating with the refrigerating chamber from outside, a refrigerating chamber inner wall in an upper space divided into two by the partition wall, Air supply ports for introducing high-humidity and low-temperature clean air from the air cleaning device are provided at positions close to the respective feeding passages, respectively, and at a position below the refrigerating chamber inner wall in the lower space divided by the partition wall. Provided with an intake port for collecting the heat-absorbed air to the air cleaning device, and provided with blower guide walls facing each other in a downward slope from the side wall of the refrigerating chamber near the positions where the blower fans are installed to the inner bottom surface, respectively. A return flow path for guiding the endothermic air to the upper space is provided at a substantially intermediate position, and the air cleaning device is provided with a brine tank connected to the lower water tank, and the brine is collected from the lower water tank and cooled. An aseptic high-humidity low-temperature refrigerating apparatus comprising a chiller unit that can be circulated again in the lower water tank.