JPH08226738A - Refrigerator for refrigerated warehouse - Google Patents

Abstract

PURPOSE: To provide a cooler for a refrigerated warehouse which enables cooling of a storage chamber stably while simplifying a duct piping. CONSTITUTION: A static pressure room unit 16 is provided with a single cross duct unit 11 having one cross duct 12 connected directly thereto and one set or more than one set of the signal cross duct units 11 are combined to be arranged parallel in the direction of the short side 1b or the long side 1c of a storage chamber 1a of a rectangular or L-shaped refrigerated warehouse 1. The cross duct 12 of each signal cross duct unit 11 is supported by a hanger means 20 movable being stretched to be mounted in the storage chamber 1a. This enables simplifying of a duct piping while allowing cooling of the storage chamber stably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for cooling various foods, etc. with high freshness by using a cross duct in a commercial refrigerating warehouse, a prefabricated refrigerating warehouse or the like.

[0002]

2. Description of the Related Art Generally, in this type of cooling device, an air duct made of steel or panel is installed on the ceiling of a storage room, and cool air of -5 ° C to + 15 ° C is supplied from a plurality of openings of the air duct. Blows out in a given direction at high speed. Then, the air in the storage chamber is forcedly circulated to the lower portion of the storage chamber by high-speed cold air to cool by a forced convection method. By the way, according to this method, since the temperature distribution in the refrigerator is not uniform and the wind velocity of the cool air is high, the stored items are likely to be dried and deteriorated, and further, the sensible temperature of the worker is low and the work efficiency is poor. There is.

On the other hand, as an air conditioning system in a low temperature working room or a clean room, for example, a fiber-made cross duct (sock duct, fiber duct) is disclosed in JP-A-3-45852.
A method of using is known. Conventionally, an air conditioner using the above-mentioned cross duct is, for example, as shown in FIG.

That is, a steel collecting duct 51 is hung horizontally from the ceiling along the long side 50c of the working chamber 50a of the air conditioner 50, and a plurality of blowing ducts are provided in the longitudinal direction of the collecting duct 51. The outlet 51a is opened and protrudes. The collecting duct 51 is an indoor unit 53 of the cooler 52.
The indoor unit 53 is connected to the outdoor unit 56 by being piped to the outside by a duct 55.

Further, a plurality of cross ducts 57 are formed in the shape of an elongated cylinder whose ends are directly closed by a woven or knitted cloth, and these cross ducts 57 have their open ends 57a at the plurality of outlets 51a of the collecting duct 51. And are fixed by a metal fitting 58 such as a band, and are continuously provided. Each of the plurality of cross ducts 57 is provided with a hanging means 59 from the ceiling.
It is supported so that it can extend and contract.

In this way, as for the entire duct piping, the collective duct 51 is arranged along the long side 50c of the rectangular work chamber 50a, and a plurality of cross ducts 57 are provided from this collective duct 51.
Is branched at a right angle and is arranged at a predetermined interval in parallel with the short side 50b. And the indoor unit 53 of the cooler 52
The cold air A generated in 1 is once introduced into the collecting duct 51, and is separately introduced into the plurality of cross ducts 57 from the collecting duct 51, and is blown out from all the surfaces of the plurality of cross ducts 57. .

[0007]

However, in the above-mentioned prior art, on the premise that the steel collecting duct 51 is piped, a plurality of cross ducts 57 are branched and connected to the collecting duct 51. Since the structure is provided, the duct piping is complicated by the number of the collecting ducts 51, and the number of man-hours for mounting is large. Further, since the space of the work chamber 50a is largely restricted by the collecting duct 51, there is a large variation in the room temperature at low temperatures, and the large number of ducts causes dew condensation on the ducts.

The present invention has been made in view of the above circumstances, and in using the both in combination, a cooling device for a refrigerating warehouse that simplifies the duct piping and can cool the storage chamber stably. It is intended to be provided.

[0009]

In order to achieve the above object, a cooling device for a refrigerating warehouse according to claim 1 of the present invention comprises a single cross duct unit in which one cross duct is directly connected to a static pressure indoor unit. , This single cross duct unit is combined in one set or in two or more sets and arranged in parallel to the direction of the short side or the long side of the compartment of the rectangular or L-shaped refrigerated warehouse, and the cross duct of each single cross duct unit is arranged. It is characterized in that each is supported by a suspending means so as to be capable of expanding and contracting, and is attached to the storage chamber.

A cooling device for a refrigerating warehouse according to a second aspect comprises a plurality of cross duct units in which 2 to 4 cross ducts are connected to a static pressure indoor unit via branch ducts. It is characterized in that it is arranged in parallel with the long side direction of the storage chamber, and a plurality of cross ducts are respectively supported by the suspending means so as to be able to extend and contract, and are attached to the storage chamber.

According to a third aspect of the present invention, there is provided a cooling device for a refrigerating warehouse, wherein a single cross duct is directly connected to a static pressure indoor unit, and 2 to 4 cross ducts are connected to the static pressure indoor unit via a branch duct. A plurality of cross duct units that are connected to each other.These single cross duct units and multiple cross duct units are combined and placed in parallel to the long side direction of the cold storage warehouse compartment, and the cross ducts of each unit are suspended. It is characterized in that it is supported by a lowering means so as to be able to extend and contract, and is attached to the storage chamber.

[0012]

According to claim 1 of the present invention configured as described above, when a single cross duct unit is mounted in the long side direction of a rectangular chamber of a refrigerated warehouse, a cross duct directly connected to the static pressure indoor unit is formed. For example, by static pressure of 5 to 12 mmAq, it is possible to extend in the axial direction and reach almost the entire area of the storage chamber in the long side direction. When multiple sets of single cross duct units are installed in the short side direction of the rectangular chamber, the cross duct directly connected to the static pressure indoor unit extends axially in any of the sets and extends in the short side direction of the chamber. It becomes possible to reach the whole area, and the utilization of the space in the refrigerator becomes high.

Therefore, when the cool air generated in the indoor unit is introduced into the cross duct and is blown out from the entire surface of the cross duct while being stretched in the axial direction by static pressure, not only in the left and right sides of the cross duct but also in the axial direction. The cold air efficiently spreads over almost the entire long side or the short side and is cooled, whereby the temperature distribution becomes uniform. Further, in the case of a plurality of sets, by defrosting the plurality of indoor units by shifting the time, it is possible to defrost the indoor units and secure a constant compartment temperature.

According to the second aspect of the present invention, the cross duct system can be installed in a large-scale refrigerated warehouse by a simple operation by the plurality of cross duct units. Then, when the cool air generated in the indoor unit is introduced into the cross duct, the cool air is positively guided in the long side direction by the 2 to 4 cross ducts that extend in the axial direction due to the static pressure, and the short cross section of the warehouse is reduced by the small cross duct. Cool air blows out in the direction of the long side and the long side, and it is cooled effectively.

According to the third aspect, by combining the single cross duct unit and the plural cross duct units, the cross duct system can be installed in a large-sized refrigerated warehouse by a simple operation. Then, when the cool air generated in the indoor unit is introduced into the cross duct, it is expanded in the axial direction by the static pressure.
The cold air is positively guided in the long side direction by the ~ 4 cross ducts, and the cool air is blown out in the short side and long side directions of the storage chamber by the few cross ducts to be effectively cooled.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing the overall structure of a cooling device for a refrigerating warehouse according to the present invention, and FIG. 2 is a sectional view of a refrigerating warehouse room portion. In these drawings, a refrigerating warehouse 1 is, for example, a prefabricated small refrigerating warehouse, and is configured by using a heat insulating floor panel 2 having a metal surface plate attached to a core of urethane foam, an outer wall panel 3, and a roof panel 4. It That is, the outer wall panel 3 is erected on the floor panel 2 so as to surround the four sides, and the roof panel 4 is mounted on the outer wall panel 3 to form a rectangular closed box shape. A doorway 7 having a door 6 is provided at 5. The refrigerating warehouse 1 is equipped with a cooling device 10 using a cross duct.

The cooling device 10 comprises an indoor unit 16 and an outdoor unit 17 according to a conventional method.
Is provided with a single cross duct unit 11 in which one cross duct 12 is connected to a cooler 15 that cools the circulating air sucked by a suction fan 15a that can generate a static pressure. It is configured to be supported by (see FIG. 2). As the suction fan 15a capable of generating static pressure, a commercially available normal static pressure fan is appropriately used, and the outdoor unit 17 is also a normal one as it is.

The cross duct 12 is made of natural fibers such as cotton and hemp, and synthetic fibers such as nylon, polyester, acryl and polypropylene in a plain weave, for example, 0.1-2.
Make a woven or knitted fabric with a mesh of 00 μm. This woven or knitted fabric is formed into a slender tubular shape with its tip closed, and in this case, the duct diameter is, for example, 100 to 600 mm, and the length is, for example, 1
It is formed to a size of 10 m.

As a result, the cross duct 12 has a large number of fine textures uniformly arranged on the entire surface thereof, and cool air is diffused through the textures into the chamber 1a at a low speed to clean the air in the chamber 1a. Will be possible. Further, by cleaning the cross duct 12 after using it for 2 to 6 months, clogging of the texture and the like can be eliminated. It is more preferable to coat the surface of the cross duct with a bactericide, an antifungal agent, and a deodorant.

The cooler 15 is formed of a finned refrigerant pipe line, is arranged in the static pressure indoor unit 16, and is connected to the pipe line 18 of the outdoor unit 17, so that the indoor unit 16 is cooled. It is mounted by a mounting bracket 14 in the vicinity of the short side wall 5a or the long side wall 5 of the storage chamber 1a.
The indoor unit 16 is capable of generating cool air according to its capacity and discharging the cool air at a predetermined air volume and a predetermined air velocity to apply a predetermined static pressure. In this case, the indoor unit 16 is configured such that the air volume and the wind speed are variable by an intake fan installed therein, the air containing the steam of the defroster is difficult to be discharged, and the conical connection duct 19 is provided on the discharge side of the cool air. It is projected.

Then, one cross duct 12 is connected to the connection duct 19 of the static pressure indoor unit 16, the open end 12a of the cross duct 12 is covered with the connection duct 19, and the connection duct 19 is fixed and directly connected by a stopper 13 such as a ratchet type steel band. As a result, when the cross duct 12 extends in the axial direction, the cross duct 12 is arranged in a wider area of the storage chamber 1a as compared with the conventional case, and it is possible to increase utilization of the space in the storage.

The indoor unit 16 and the cross duct 12
In this configuration, the cool air of the indoor unit 16 is directly sent to the cross duct 12 by directly connecting the above. Therefore, the air volume of the cross duct 12 is determined by the discharge capacity of the indoor unit 16, and the inlet air velocity is determined by this air volume and the duct cross-sectional area. Then, the static pressure inside the duct is determined according to the inlet wind speed, and this static pressure is set to, for example, 5 to 12 mmAq.
The outlet wind speed is determined by the air volume and the total surface area of the duct, and the outlet wind speed is set to, for example, 0.06 to 0.1 m / sec.

The hanging means 20 is a storage room 1a of the refrigerated warehouse 1.
In, a supporting line 21 such as a curtain rail or a wire is horizontally installed by a hanging metal fitting 22 at a location where a duct is arranged on the ceiling 8 by the roof panel 4. Also cross duct 12
A string ring 23 is attached to a plurality of positions in the axial direction of the string ring 23, and the string ring 23 and the rail-side mover 24 are used as the hook 2 of the support fitting.
It is hooked at 5. In this way, the cross duct 12 is horizontally mounted right below the ceiling 8 by the suspending means 20 and is supported so as to be capable of expanding and contracting in the axial direction.

In the case of the rectangular small refrigerating warehouse 1, the indoor unit 16 of the above-mentioned set of single cross duct units 11 is located in the middle of the left short side 1b of the compartment 1a,
The cross duct 12 is arranged in parallel with the long side 1c so as to pass through the center of the compartment 1a, and the cross duct 12 is supported by a suspending means 20 so as to be capable of expanding and contracting. Then, the cross duct 12 that is directly connected to the indoor unit 16 can extend and reach almost the entire area in the long side 1c direction of the storage chamber 1a.

Next, the operation of this embodiment will be described. When the indoor unit 16 is stopped, the cross duct 12
Is contracted as shown by the solid line in FIG. Indoor unit 16
When the engine is operated, cool air A is generated in the cooler 15 via the suction fan 15a of the indoor unit 16 and the cool air A is directly introduced into the cross duct 12 by the connection duct 19, whereby a predetermined amount of, for example, 5 is introduced into the cross duct 12. ~ 1
A static pressure of about 2 mmAq is applied. Therefore, the cross duct 12 is supported by the suspending means 20 in a state in which the cross duct 12 swells in a cylindrical shape and extends in the axial direction as shown by the alternate long and short dash line in FIG.

Cold air A introduced into the cross duct 12
Cross the duct 12 through a number of fine textures on the surface.
It blows out from the whole surface at a low wind speed. Therefore, on the ceiling 8 side of the cold storage 1a of the cold storage 1, the cross duct 12
About the entire long side 1c in the axial direction of the cross duct 12
The cold air A is supplied so as to be constantly diffused and spread over almost the entire area in the direction of the short sides 1b on the left and right sides of the. Thereby, the storage room 1a
The hot air B that is heated by the outside air and rises to the ceiling 8 side is sucked in from the back surface or the lower portion of the internal unit 16, and
The cooling air A is efficiently cooled by the natural air A in almost the entire area of a, and thus the stored material C in the storage chamber 1a is refrigerated / frozen.

At this time, the circulating air flow in the storage chamber 1a is so small as not to be felt. For this reason, the work becomes easier and scattering of dust accumulated in the room is avoided. Further, since the air flow that comes into contact with the stored goods is low in speed, dehydration and drying and deterioration are reduced, and deterioration of quality is prevented. Further, the air in the chamber 1a is filtered by the fine texture of the cross duct 12 and circulates, whereby the chamber 1a is always cleaned.

Further, in particular, the cross duct 12 directly connected to the indoor unit 16 reaches almost the entire area of the chamber 1a in the direction of the long side 1c, and the cool air A is effectively blown out to that region, so that the entire chamber 1a is cooled. A is evenly distributed, and the temperature distribution in the storage chamber 1a becomes uniform. For this reason, the superiority or inferiority of preservation depending on the location of the compartment 1a is eliminated, and the arrangement of stored items can be loose.

The connection duct 19 of the indoor unit 16 does not necessarily have to be a conical unitary body, but may be tapered on the square base portion 19a as shown in FIG. 6, for example.

Next, a modification of the present invention will be described with reference to FIGS. FIG. 3 shows a case where it is applied to a large-scale refrigerated warehouse having a relatively large width. Refrigerated warehouse 1
Has the same configuration as that of FIG. 1 except that the sizes are different, and the same portions are denoted by the same reference numerals and the description thereof will be omitted. Therefore, in this case, the cooling device 10 includes the static pressure indoor unit 16
The branch duct 31 is connected to the
A plurality of cross ducts 12 are connected in parallel to form a plurality of cross duct units 30. For the large-scale refrigerated warehouse 1, the static pressure indoor unit 16 of one set of multiple cross duct units 30 is located in the middle of the left short side 1b of the cold storage chamber 1a, and the two cross ducts 12 are arranged at regular intervals. Long side 1c
Are arranged in parallel with each other, and these two cross ducts 12 are supported and mounted by hanging means (not shown).

Therefore, in this embodiment, a short branch duct is used, but the cross refrigeration system is installed in the large-scale refrigerated warehouse 1 by a simple operation by the small number of plural cross duct units 30. Then, by operating the cooler 15 of one set of multiple cross duct units 30, the cool air A generated in the indoor unit 16 is simultaneously introduced into the two cross ducts 12 and static pressure is applied, whereby the two The cross duct 12 extends in the axial direction. The cold air A is supplied to the long side 1 of the compartment 1a by the two cross ducts 12.
It is actively guided in the c direction and blows off from all its surfaces at the same time. As a result, the number of branches in the chamber 1a is as small as two, and even if no special measures are taken, they both flow uniformly, and the two small cross ducts 12 cool air not only in the short side 1b direction but also in the long side 1c direction. A spreads uniformly and is cooled efficiently.

FIG. 4 (a) uses a plurality of sets of singular cross duct units 11. So refrigerated warehouse 1
For example, three sets of single cross duct unit 1
1 is arranged in parallel with the short side 1b at a mounting interval of, for example, 2 to 3 m, and the cross ducts 12 of the respective units 11 are supported and mounted by hanging means (not shown).

Therefore, in this embodiment, by operating the coolers 15 of the three sets of units at the same time, the cool air A is blown and cooled independently from the three cross ducts 12. In this case, the three cross ducts 12 are arranged in substantially the entire area of the short side 1b and blow out the cool air A, so that the temperature distribution in the storage chamber 1a becomes uniform. Also indoor unit 16
Needs to be regularly defrosted, and the cooling capacity is lowered during this defrosting. However, by defrosting the three indoor units 16 at different times, the indoor units 16 are reliably defrosted. It is possible to maintain a constant chamber temperature while frosting.

FIG. 4 (b) uses a single cross duct unit 11 and a plurality of cross duct units 30. Therefore, the static pressure indoor unit 16 of the set of plural cross duct units 30 is located in the middle of the left short side 1b of the cold storage 1a of the refrigerating warehouse 1, and the two cross ducts 12 are arranged in parallel with the long side 1c. . Further, the static pressure indoor unit 16 of the single singular cross duct unit 11 is positioned in the middle of the right side short side 1d, and one cross duct 12 is arranged in parallel between the two cross ducts 12 at a constant interval. To be done. Then, the cross ducts 12 of the units 11 and 30 are supported and mounted by hanging means (not shown).

Therefore, in this embodiment, the cross-duct system is installed by a simple operation in the large-sized refrigerating warehouse 1 having a wider width than in the case of FIG. By operating the coolers 15 of the two sets of units 11 and 30 at the same time,
The cold air A is the long side 1c of the storage chamber 1a in the three cross ducts 12.
Is positively guided in the direction, and the three cross ducts 12 efficiently cool the cold air A not only in the direction of the short side 1b but also in the direction of the long side 1c. Further, by defrosting the two indoor units 16 at different times, it is possible to defrost the indoor units 16 and make the compartment temperature constant.

FIG. 4C shows a refrigerating warehouse 1 which is formed by bending the refrigerating warehouse 1 into an L-shape corresponding to the shape of the site. Therefore, in this case, two sets of the single cross duct units 11 are arranged and mounted at right angles along the L-shaped storage chamber 1a. Therefore, in this embodiment, the cool air A spreads over the entire area of the L-shaped chamber 1a by the cross ducts 12 of the two sets of units 11 and is effectively cooled.

The L-shaped cross duct 33 can be formed by connecting two linear cross ducts 33a and 33b at a right angle by a corner joint 33c as shown in FIG. Further, since the cross duct itself is a fiber, it is also possible to cut one half of the cross duct and sew it at a right angle to form an L-shaped cross duct. Therefore, by connecting and using the L-shaped cross duct 33 of this kind to the static pressure indoor unit 16, it can be applied to the L-shaped refrigerated warehouse 1 as it is.

Although the embodiment of the present invention has been described above, three or more cross ducts may be connected in the plural cross duct unit. The mounting state of the single cross duct unit, the plural cross duct units, and the combination of the both in the refrigerating warehouse is not limited to the embodiment.

[0039]

As described above, in the cooling device for the refrigerating warehouse according to claim 1 of the present invention, the static pressure indoor unit has one unit.
It is equipped with a single cross duct unit that directly connects two cross ducts.
Combining more than one set, arrange them in parallel to the direction of the short side or the long side of the compartment of the rectangular or L-shaped refrigerated warehouse, and support the cross duct of each singular cross duct unit so that it can be expanded and contracted by hanging means. Since it is configured to be installed in the storage chamber, it can be easily installed, and the cross duct itself can be easily cleaned and attached or replaced. In addition, the need for a collecting duct and the like is eliminated, the duct piping is simplified, and the number of work steps can be reduced. By directly connecting the indoor unit and the cross duct, the cool air flows surely and smoothly, and the static pressure, outlet wind speed, etc. can be set easily.

Since the space utilization in the refrigerator is high, the temperature distribution in the refrigerator can be made uniform (for example, about ± 1 ° C.). In the case of a plurality of pairs, the compartment temperature can be made constant while defrosting the plurality of indoor units. Further, since the circulating air in the refrigerator can be made to have a low wind speed (around 0.1 m / sec), deterioration of quality due to drying of stored items can be prevented.

According to a second aspect of the present invention, there is provided a cooling device for a refrigerating warehouse, comprising a plurality of cross duct units in which two to four cross ducts are connected to a static pressure indoor unit via branch ducts. Since it is arranged parallel to the long side direction of the storage compartment, and the plurality of cross ducts are supported by the suspending means so as to be capable of expanding and contracting and mounted in the storage compartment, it can be easily mounted in a large-scale refrigerated warehouse. Since multiple cross ducts are arranged in the long side direction of the warehouse,
With a small number of cross ducts, the cool air spreads over almost the entire area of the storage chamber and can be cooled efficiently.

In the refrigerating apparatus for a refrigerating warehouse according to claim 3, a single cross duct unit in which one cross duct is directly connected to the static pressure indoor unit, and 2 to 4 cross ducts via the branch duct to the static pressure indoor unit. A plurality of cross duct units that are connected to each other.These single cross duct units and multiple cross duct units are combined and placed in parallel to the long side direction of the cold storage warehouse compartment, and the cross ducts of each unit are suspended. Since it is configured to be supported by the lowering means so that it can be expanded and contracted and mounted in the storage compartment, it can be easily mounted in a larger refrigerated warehouse, and maintenance and the like becomes easier. Since multiple cross ducts are arranged in the long side direction of the warehouse,
With a small number of cross ducts, the cool air spreads over almost the entire area of the storage chamber and can be cooled efficiently.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an example of a cooling device for a refrigerating warehouse of the present invention.

FIG. 2 is a sectional view of the same embodiment.

FIG. 3 is an overall perspective view of a second embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a mounted state of a cross duct unit.

FIG. 5 is a plan view showing an L-shaped cross duct.

FIG. 6 is a perspective view of another embodiment of the connection duct.

FIG. 7 is a schematic perspective view showing an air conditioner using a conventional cross duct.

[Explanation of symbols]

 1 Cold Storage 1a Storage Room 1b Short Side 1c Long Side 11 Single Cross Duct Unit 12 Cross Duct 15 Cooler 15a Static Pressure Suction Fan 16 Static Pressure Indoor Unit 20 Hanging Means

Claims (3)

[Claims] 1. A static or indoor unit is provided with a singular cross-duct unit in which one cross-duct is directly connected, and one or two or more singular cross-duct units are combined to form a rectangular or L-shaped refrigerator warehouse. Cooling of a refrigerated warehouse characterized by being arranged parallel to the direction of the short side or the long side of the room, and supporting the cross ducts of each singular cross duct unit so that they can be expanded and contracted by suspending means respectively. apparatus. 2. A plurality of cross duct units in which 2 to 4 cross ducts are connected to a static pressure indoor unit via branch ducts are provided, and the plurality of cross duct units are arranged parallel to the long side direction of the cold storage warehouse. A cooling device for a refrigerating warehouse, wherein the cooling device is arranged, and a plurality of cross ducts are respectively supported by suspending means so as to be capable of expanding and contracting and mounted in a storage room. 3. A single cross duct unit in which one cross duct is directly connected to the static pressure indoor unit, and a plurality of cross duct units in which 2 to 4 cross ducts are connected to the static pressure indoor unit via branch ducts. The single cross duct unit and the multiple cross duct unit are combined and arranged in parallel with the long side direction of the compartment of the refrigerating warehouse, and the cross duct of each unit is supported by the suspending means so that it can be expanded and contracted. A cooling device for a refrigerated warehouse, which is characterized by being installed in a storage compartment.