JP2002031461A - Freezer/refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freeze/cool an article to be frozen/cooled efficiently while keeping a sanitary environment. SOLUTION: The freezer/refrigerator body comprises a tubular circumferential wall extending back and forth while surrounding a carrying means, an evaporator disposed below the carrying means in the circumferential wall, and a chill pressure feed fan disposed on the side of the evaporator wherein chill generated from the evaporator is circulated along the inner face of the circumferential wall by means of the chill pressure feed fan. Since the evaporator is disposed below the carrying means, foreign matters, e.g. dust, adhering to the evaporator does not fall onto an article to be frozen/refrigerated being carried by the carrying means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freezing / refrigeration apparatus.

[0002]

2. Description of the Related Art Conventionally, as one form of a freezing / refrigeration apparatus,
There is an apparatus having a tunnel-type apparatus main body and a transport conveyor disposed in the apparatus main body, wherein the frozen / refrigerated material transported by the transport conveyor is frozen and refrigerated by the apparatus main body.

[0003] The main body of the apparatus extends in the front-rear direction and is surrounded by a cylindrical peripheral wall surrounding the conveyor.
An evaporator is arranged at a position directly above the conveyor, a chilled air sending fan is arranged at an upper position of the evaporator, and the cool air generated by the evaporator is sent downward by the chilled air sending fan, Refrigerated / refrigerated material transported by the transport conveyor is frozen and refrigerated.

[0004]

However, the above-mentioned refrigerator / freezer still has the following problems.

[0005] Since the evaporator is disposed immediately above the conveyor, foreign substances such as dust and dirt adhering to the evaporator are conveyed on the conveyor to be frozen or refrigerated. There is a risk of falling on and adhering.

[0006] From the position directly above the conveyor, cold air is pressure-fed to the frozen / refrigerated object conveyed on the conveyor, whereby the frozen / refrigerated object is frozen / refrigerated. However, since the cold air pumped onto the frozen / refrigerated material only flows laterally and does not generate a flow of cold air circulating in the peripheral wall, the refrigeration / refrigeration efficiency is still better. There is a problem that there is no.

[0007] When performing operations such as maintenance in the apparatus main body, the operations must be performed from the front and rear opening ends of the peripheral wall, and such operations are complicated.

[0008] Since the heat insulating effect of the peripheral wall is not sufficiently performed, there is a problem that dew condensation occurs on the outer surface of the peripheral wall, which causes propagation of various bacteria.

[0009]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a tunnel-type apparatus main body and a transporting means disposed in the apparatus main body, and the frozen / refrigerated material transported by the transporting means is provided. Freezing and refrigeration by the main unit
In the refrigerating apparatus, the apparatus main body includes a cylindrical peripheral wall extending in the front-rear direction and surrounding the conveying means, an evaporator disposed in the peripheral wall at a position below the conveying means, and a side of the evaporator. And a refrigeration / refrigeration apparatus, comprising: a chilled-air sending fan disposed at one side of the peripheral wall, wherein the chilled air generated by the evaporator is circulated along the inner surface of the peripheral wall by the chilled-air sending fan. Is what you do.

[0010] The present invention also has the following features.

The peripheral wall has an inner peripheral surface that is curved in the peripheral direction.

[0012] A cross fan extending in the direction of extension of the peripheral wall is used as the cooling and air pressure sending fan.

[0013] A belt conveyor equipped with a cool air-impermeable conveyor belt is used as the conveying means, and a cooling air flowing-down fan is disposed immediately above the conveyor belt.

[0014] A belt conveyor having a cool air permeable transfer belt is used as the transfer means, and a cool air flow guide is disposed immediately above the transfer belt.

The upper half portion of the peripheral wall extends in the front-rear direction and has a narrow central support portion, and the left and right side edges of the central support portion pivotally support the upper end edges respectively so as to be freely openable and closable. It has a pair of opening and closing door parts.

The peripheral wall includes an inner peripheral wall, an outer peripheral wall arranged opposite to the inner peripheral wall, a connecting body made of a heat-resistant conductive material for connecting the ends of the inner and outer peripheral walls, And a heat-insulating foamed material filled in.

The peripheral wall is provided with a dew condensation preventing heater between the inner peripheral wall and the outer peripheral wall.

[0018]

Embodiments of the present invention will be described below.

That is, the refrigeration / refrigeration apparatus according to the present invention includes a tunnel-type apparatus main body and a transport means disposed in the apparatus main body, and stores the frozen / refrigerated material transported by the transport means. They are frozen and refrigerated by the main unit.

The apparatus main body includes a cylindrical peripheral wall extending in the front-rear direction and surrounding the conveying means, an evaporator disposed in the peripheral wall below the conveying means, and a lateral side of the evaporator. And a cooling / pressure-feeding fan disposed at the position, so that the cold air generated by the evaporator is circulated along the inner surface of the peripheral wall by the cooling / pressure-feeding fan.

Further, the peripheral wall has an inner peripheral surface formed into a curved shape in the peripheral direction, and an upper half portion of the peripheral wall extends in the front-rear direction and has a narrow central support portion, and left and right sides of the central support portion. A pair of left and right openable doors is provided on each side edge so that the upper edge can be pivotally supported to open and close freely.

Here, the peripheral wall includes an inner peripheral wall, an outer peripheral wall disposed opposite to the inner peripheral wall, a connecting body made of a heat-resistant conductive material for connecting the ends of the inner and outer peripheral walls, A heat insulating foam material filled between outer peripheral walls is provided, and a dew condensation preventing heater is disposed between the inner peripheral wall and the outer peripheral wall.

Further, a cross fan extending in the direction of extension of the peripheral wall is used as a cooling and air pressure sending fan, and a belt conveyor having a cold air impermeable conveyor belt is used as a conveying means. A cold-air flowing-down fan is disposed immediately above the belt.

Further, a belt conveyor having a cool air permeable transfer belt may be used as the transfer means, and a cool air flow-down guide may be disposed immediately above the transfer belt.

[0025]

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

1 to 3 show a refrigeration / refrigeration apparatus according to the present invention. The refrigeration / refrigeration apparatus A is disposed in a tunnel-type apparatus main body 1 and in the apparatus main body 1. And a refrigerated / refrigerated material B conveyed by the belt conveyor 2 are frozen and refrigerated by the apparatus main body 1. Reference numeral 3 denotes a carry-in belt conveyor, and reference numeral 4 denotes a carry-out belt conveyor.

In the apparatus main body 1, a belt conveyor 2 is disposed at a central portion within a cylindrical peripheral wall 5 extending in the front-rear direction, and an evaporator 6 is disposed immediately below the belt conveyor 2; Cross fans 7 and 8 as cooling / pressure-sending fans are provided at left and right sides of the evaporator 6, respectively.
The three cooling air flow-feeding fans 9, 9, 9 are disposed at a certain interval in the front-rear direction just above.

The peripheral wall 5 has an inner peripheral surface that is curved in the peripheral direction and is formed in a substantially elliptical shape that is horizontally long in a front view. The upper half of the peripheral wall 5 extends in the front-rear direction and is narrow. A pair of left and right opening / closing door portions that can be freely opened and closed by pivotally supporting the upper end edges at the left and right side edges of the width-shaped central supporting portion 10, respectively.
As shown in FIG. 4, both openable doors 11 and 12 can be opened and closed by a pair of front and rear open / close mechanisms 13 and 14 provided on the central support portion 10. 39 is a support leg.

Then, as shown in FIG.
Inner peripheral wall 5a, and outer peripheral wall 5b arranged opposite to the inner peripheral wall 5a
And a connecting body 5c made of a heat-insulating material (for example, a material having a low thermal conductivity such as a fluororesin or wood) connecting the ends of the inner and outer walls 5a and 5b, and an inner and outer wall 5a And a heat insulating foam material 5d such as urethane foam filled between the inner peripheral wall 5a and the outer peripheral wall 5b. I have. 16 is a connecting screw.

Here, a front wall 17 is provided at the front end of the peripheral wall 5, a carry-out port 18 is formed in the front wall 17, and the carry-out port 18 can be opened and closed by a carry-out opening / closing door 19. A rear wall 20 is provided at the rear end, and a carry-in entrance 21 is formed in the rear wall 20. The carry-in entrance 21 can be opened and closed by a carry-in opening / closing door 22. 23 is a carry-out opening / closing mechanism, and 24 is a carry-in opening / closing mechanism.

In the belt conveyor 2, a driven roller 25 is disposed near the carry-out port 18, and a driving roller 26 is disposed near the carry-in port 21, so that cold air is impermeable between the rollers 25 and 26. A transmission belt 31 is inserted between a drive shaft 28 of a drive roller 26 and an output shaft 30 of a conveyor drive motor 29 disposed at a rear portion in the peripheral wall 5.
It is wound via output pulleys 32 and 33. Reference numeral 34 denotes a transport belt support frame.

The evaporator 6 has a function of cooling ambient air by using heat of vaporization required when the heat medium is vaporized from a liquid to a gas. A refrigerator main body (not shown) for circulating air is disposed outside the peripheral wall 5.

The cross fans 7, 8 are formed so as to extend along the direction in which the peripheral wall 5 extends. 41 is a cross fan drive motor.

The left cross fan 7 is arranged at a position on the left side of the evaporator 6 and below the left side of the belt conveyor 2 via a fan case 7a.
Is arranged on the side of the evaporator 6 and the air outlet 7c is arranged toward the left space S1 formed between the left edge of the belt conveyor 2 and the left inner peripheral surface of the peripheral wall 5. , The cool air generated by the evaporator 6 is sucked through the air inlet 7b to blow the air.
It is pressure-fed upward through the left space S1 from 7c.

On the other hand, the right cross fan 8 is
The fan case 8a is disposed via the fan case 8a at the right side of the belt conveyor 2 and below the right side of the belt conveyor 2, and the intake port 8b of the fan case 8a is connected to the right edge of the belt conveyor 2 and the right inner peripheral surface of the peripheral wall 5 The air outlet 8c is arranged toward the evaporator 6 and the air (cool air) sucked from the air inlet 8b through the right space S2 is disposed at the wind distribution plate 35. To the evaporator 6 under pressure.

Thus, the left and right cross fans 7,
8, a cool air circulation flow R1 circulating clockwise in the front view shown in FIG. 3 can be formed along the inner peripheral surface of the peripheral wall 5.

At this time, each of the cross fans 7, 8 is a fan capable of increasing the air volume and reducing the wind pressure, but is preferably set to generate a wind having a wind speed of 1.5 m / s. On the other hand, if the wind speed is lower than this, the cooling efficiency is reduced.

The three cooling air flow pumping fans 9, 9, 9 are suspended from the central support portion 10 of the peripheral wall 5 at predetermined intervals in the front-rear direction, and extend along the inner peripheral surface of the peripheral wall 5. The cool air circulating flow R1 that rises up is sent to each of the cool air flowing down pumping fans 9, 9,
9 to forcibly flow down the conveyance belt 27 immediately below, so that the left and right cold air branch flows R2 and R3 that branch off to the left and right along the surface of the conveyance belt 27 and flow can be formed. I have to.

In this manner, the frozen / refrigerated material B conveyed on the conveyor belt 27 can be efficiently cooled by the left and right cold air branch flows R2 and R3.

Further, the left and right cold air branch flows R2 and R3 are made to merge with the cool air circulation flow R1 after flowing on the surface of the conveyor belt 27.

1 to 4, reference numeral 36 denotes a cleaning pipe, and the cleaning pipe 36 has a cleaning water jet nozzle (not shown).
And the inside of the freezing / refrigeration apparatus A can be washed by ejecting washing water from the washing water ejection nozzle. 37 is an opening / closing valve.

At this time, the carry-out / entrance opening / closing doors 19 and 22 are open during freezing / refrigeration while transporting the frozen / refrigerated material B by the belt conveyor 2, but are closed during such cleaning work. Keep it.

The cleaning drainage and the like in the peripheral wall 5 are discharged through a drain pipe 38 connected to the bottom of the peripheral wall 5.

FIG. 6 shows a refrigeration / refrigeration apparatus A as another embodiment. The refrigeration / refrigeration apparatus A has the same basic structure as the above-mentioned refrigeration / refrigeration apparatus A, The belt 27 is made permeable to cold air, and the intake port 8b of the right fan case 8a is arranged to face the evaporator 6 and the air outlet 8c
Is arranged toward the right side space S2, and the central support portion 10 of the peripheral wall 5 is disposed.
A different point is that a cold air flow guide body 40 is provided in the first embodiment.

The cool air flow-down guide body 40 guides the cool air which has been pressure-fed from the left cross fan 7 and rises along the left inner peripheral surface of the peripheral wall 5 toward the conveying belt 27 immediately below. A cool air flow guide piece 40a and a right cool air flow guide piece 40b that guides the cool air that has been pressure-fed from the right cross fan 8 and has risen along the right inner peripheral surface of the peripheral wall 5 toward the transport belt 27 immediately below. From the front, it is formed in a substantially V shape when viewed from the front.

In this manner, the cool air that has been pressure-fed from the left cross fan 7 and has risen along the left inner peripheral surface of the peripheral wall 5 flows down toward the transport belt 27 immediately below by the left cool air flow guide piece 40a. Guide the cold air permeable conveyor belt
27, the left side cross fan 7 sucks the cold air that has passed through the inside and pressurizes it again, thereby forming a clockwise left side cool air circulation flow R4 in a front view shown in FIG. .

Further, the cool air that has been pressure-fed from the right cross fan 8 and has risen along the right inner peripheral surface of the peripheral wall 5 is guided downward by the right cool air downward guide piece 40b toward the transport belt 27 immediately below. The convey belt 27 is penetrated, and the penetrated cool air is sucked by the right cross fan 8 and re-pumped, thereby forming a right cool air circulation flow R5 counterclockwise as viewed from the front as shown in FIG. Like that.

Therefore, the left and right cool air circulation flows R4, R5
Thereby, the frozen / refrigerated material B on the transport belt 27 as well as the inside of the peripheral wall 5 can be efficiently frozen / refrigerated.

[0049]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, the apparatus main body extends in the front-rear direction and surrounds the periphery of the transporting means with a cylindrical peripheral wall, and the evaporator disposed in the peripheral wall at a position below the transporting means. A cooler and a cool-pressure sending fan arranged at a side position of the evaporator are provided so that the cool air generated by the evaporator is circulated by the cool-pressure sending fan along the inner surface of the peripheral wall.

As described above, since the evaporator is disposed below the transporting means, even if foreign matter such as dust adheres to the evaporator, the foreign matter is transported by the transporting means. Without falling and sticking to frozen or chilled items
Sanitary environment can be preserved.

Further, since the cool air generated by the evaporator can be circulated along the inner surface of the peripheral wall by the cooling / pressure air sending fan, the cooling efficiency in the peripheral wall can be improved, and the frozen / refrigerated material can be cooled. It can be effectively frozen and refrigerated. Therefore, the cooling cost can be reduced.

According to the second aspect of the present invention, the peripheral wall has an inner peripheral surface formed into a curved shape in the peripheral direction.

In this way, the cool air circulated along the inner surface of the peripheral wall can flow smoothly, the cooling efficiency in the peripheral wall can be further improved, The refrigerator can be effectively frozen and refrigerated. Therefore, the cooling cost can be further reduced.

According to the third aspect of the present invention, a cross fan extending in the direction in which the peripheral wall extends is used as the cooling / pressure air sending fan.

In this manner, by arranging the cross fan in the direction of extension of the peripheral wall over its entire width, uniform air can be blown over the entire width of the peripheral wall, so that the cooling temperature in the peripheral wall is substantially uniform. Thus, the effects of the freezing / refrigeration treatment of the frozen / refrigerated material can be made uniform.

At this time, since the cross fan can increase the air volume and reduce the air pressure, even if the frozen / refrigerated material is a light material (for example, shim), the frozen / refrigerated material can be used.
It is possible to prevent the refrigerated material from being blown off by the blowing and to ensure good cooling efficiency.

According to the fourth aspect of the present invention, a belt conveyor having a cool air-impermeable conveyor belt is used as the conveying means, and a cooling air flow-down fan is disposed immediately above the conveyor belt. I have.

In this way, the cool air circulating along the inner surface of the peripheral wall can be forced to flow downward by the cool air down-feeding fan at a position immediately above the conveyor belt. The frozen /
The cold air flowing down to the refrigerated material can be efficiently applied, and the cold air flowing down and the low-temperature air in the peripheral wall cooled by the circulating cold air cooperate to effectively freeze / refrigerate the frozen / refrigerated material. can do.

At this time, the flowing cool air is repelled by the cool air-impermeable conveyor belt and flows sideways. The flowing cool air is taken in and circulated by the cool air circulating along the inner surface of the peripheral wall. In the present invention according to claim 5, a belt conveyor having a cool air permeable transfer belt is used as the transfer means,
A cool air flow guide is disposed immediately above the conveyor belt.

In this way, the cool air circulating along the inner surface of the peripheral wall can be forced to flow downward by the cool air flow guide at a position immediately above the transport belt, so that the cool air is transported on the transport belt. It is possible to efficiently apply the cold air flowing down to the frozen / refrigerated material to be cooled, and the cold air flowing down and the low-temperature air in the peripheral wall cooled by the circulating cold air cooperate to cool the frozen / refrigerated material. Effectively frozen
Can be refrigerated.

At this time, the flowing cool air flows longitudinally through the cool air permeable transport belt, and the flowing cool air is transferred to the inner surface of the peripheral wall by a cool air pressure fan disposed below the transport belt. It is taken in by the cool air circulating along and circulates to efficiently cool the inside of the peripheral wall.

According to the sixth aspect of the present invention, the upper half of the peripheral wall extends in the front-rear direction and has a narrow central support portion, and the upper end edge is pivotally connected to the left and right side edges of the central support portion. It has a pair of left and right doors that are supported and can be opened and closed freely.

As described above, when performing maintenance work or the like in the peripheral wall, the upper half of the peripheral wall can be largely opened by opening the pair of left and right opening doors. It can be performed efficiently.

According to the present invention, the peripheral wall is made of an inner peripheral wall, an outer peripheral wall arranged to face the inner peripheral wall, and a heat-resistant conductive material connecting between the ends of the inner and outer peripheral walls. A heat insulating foam material filled between the inner and outer peripheral walls is provided.

In this way, the heat insulating effect of the peripheral wall and the reinforcing effect on the structure can be simultaneously and satisfactorily ensured.

Accordingly, it is possible to prevent dew formation on the outer surface of the peripheral wall, prevent the propagation of various bacteria, and preserve the sanitary environment of the freezing / refrigeration apparatus.

According to the present invention, the peripheral wall is provided with a dew condensation preventing heater between the inner peripheral wall and the outer peripheral wall.

In this manner, the occurrence of dew condensation can be reliably prevented, and the propagation of various bacteria can be reliably prevented.
The sanitary environment of the refrigeration system can be more favorably preserved.

[Brief description of the drawings]

FIG. 1 is a side view of a freezing / refrigeration apparatus according to the present invention.

FIG. 2 is a front view of the refrigeration / refrigeration apparatus.

FIG. 3 is a sectional front view of the freezing / refrigeration apparatus.

FIG. 4 is a cross-sectional front view of the freezing / refrigeration apparatus in a state where an opening / closing door is opened.

FIG. 5 is a partially enlarged sectional view of a portion P in FIG. 3;

FIG. 6 is an explanatory sectional front view of a freezing / refrigeration apparatus as another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Refrigeration / refrigeration apparatus 1 Device main body 2 Belt conveyor 3 Carry-in belt conveyor 4 Carry-out belt conveyor 5 Perimeter wall 6 Evaporator 7 Left cross fan 8 Right cross fan 9 Cold air flow pressure feed fan

Claims (8)

[Claims] 1. A device having a tunnel-type apparatus main body and a transporting means disposed in the apparatus main body, wherein a frozen / refrigerated object transported by the transporting means is frozen and refrigerated by the apparatus main body. In the refrigeration / refrigeration device, the device main body extends in the front-rear direction and surrounds a periphery of the conveying means, a cylindrical peripheral wall, an evaporator disposed in the peripheral wall at a position below the conveying means, and an evaporator. A refrigeration / refrigeration apparatus, comprising: a chilled air sending fan disposed at a side position of the chiller, wherein the chilled air generated by the evaporator is circulated along the inner surface of the peripheral wall by the chilled air sending fan. . 2. The refrigeration / refrigeration apparatus according to claim 1, wherein the peripheral wall has an inner peripheral surface formed into a curved shape in a peripheral direction. 3. The refrigeration / refrigeration apparatus according to claim 1, wherein a cross fan extending along a direction in which the peripheral wall extends is used as the refrigeration and air supply fan. 4. The cooling means according to claim 1, wherein a belt conveyor having a cool air-impermeable transfer belt is used as the transfer means, and a cooling air flowing down fan is disposed immediately above the transfer belt. 4. The refrigeration according to any one of
Refrigeration equipment. 5. The cooling means according to claim 1, wherein a belt conveyor having a cool air permeable transfer belt is used as the transfer means, and a cool air flow guide is disposed immediately above the transfer belt. The refrigeration / refrigeration apparatus according to any one of the above. 6. An upper half portion of the peripheral wall extends in the front-rear direction and has a narrow central support portion, and upper and lower end portions are pivotally supported on left and right side edges of the central support portion to be freely openable and closable. 6. A pair of left and right opening and closing door portions formed as described above.
The refrigeration / refrigeration apparatus according to any one of the above. 7. A peripheral wall comprising: an inner peripheral wall; an outer peripheral wall disposed to face the inner peripheral wall; a connection body made of a heat-resistant conductive material connecting ends of the inner and outer peripheral walls; The refrigeration / refrigeration apparatus according to any one of claims 1 to 6, further comprising a heat insulating foam material filled between the walls. 8. The peripheral wall is provided with a dew condensation preventing heater between the inner peripheral wall and the outer peripheral wall.
The refrigeration / refrigeration apparatus according to any one of claims 7 to 10.