JP2006003037A - Refrigerator and its heat utilizing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively prevent the heat loss caused by flowing of the outside air from a dock shelter part with a simple structure when refrigerated articles are loaded on and unloaded from a hauling truck, and to effectively utilize the air introduced to an antifreeze pipe or an antifreeze space mounted on a floor part of a low-temperature refrigerator for preventing the freezing, in a refrigerator provided with a chamber for handling of goods. <P>SOLUTION: In a freezer provided with the low-temperature refrigerator 1 and the antifreeze tube 15 or the antifreeze space 24 mounted in adjacent to the refrigerator for introducing the outside air (a) to the floor part of the chamber for handling of goods 2, the outside air (a) having passed through the antifreeze tube 15 or the antifreeze space 24 is introduced to the chamber for handling of goods 2. Further a pipe conduit 7 and a fan 6 are mounted to introduce the outside air (a) having passed through the antifreeze tube 15 or the antifreeze space 24 to the chamber for handling of goods 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention does not require a large-scale facility for maintaining the temperature of a low-temperature refrigerator such as a class F refrigerator and a cargo handling room attached thereto, and can achieve a simple structure and effectively use an existing cold heat source. It is related with the refrigerator which reduced heat loss significantly, and its heat utilization method.

  In recent distribution-type refrigerators, the handling room is often cooled, especially when loading or unloading refrigerated objects between the transport truck and the opening / closing door of the handling room. Most of the cargo shelters (platforms) attached to dock shelters have become 10 ° C or less (currently 5 ° C or less).

  However, in reality, the amount of outside air flowing in from the dock shelter is large, which is a major cause of increased load. Especially in the summer and the rainy season, warm air and humid air come in directly, so condensation on the floor and walls of the handling room near the dock shelter causes the floor to get wet and dull, creating a very bad environment. (The lower the room temperature, the worse this condition becomes.)

  Current countermeasures against the above-mentioned problems can be dealt with by installing a cooler with a dehumidifying function and a large cooling capacity, or by using an air curtain in the gap between the dock shelter and the transport truck or handling room. However, the inflow of outside air from the dock shelter was prevented, but there was still outside air coming in and out, heat loss was large, frosting of the cooler increased, the number of defrosts increased, and energy loss was large. .

On the other hand, in low-temperature refrigerators such as F-class refrigerators (set temperature: -25 ° C), be sure to embed pipes to prevent freezing on the floor or provide a space with a slab structure, and supply heat to the space through air. This prevents the floor from freezing.
However, until now, the air introduced into the anti-freezing pipe or the anti-freezing space has introduced outside air, and the introduced air has been discharged without using it.

  In relation to the background art described above, for example, in Patent Document 1 (Japanese Patent Laid-Open No. 59-208335), a heat storage / radiation tube having a plurality of fins inside is buried in the ground, A system is disclosed in which a duct is inserted into the other end, and the other end of the duct is introduced into an outer wall, eaves ceiling, or roof of a house or the like, and heat storage in the ground is used for air conditioning of the house or the like. A similar technique is also disclosed in Patent Document 2 (Japanese Patent Application Laid-Open No. 59-208336).

  Patent Document 3 (Japanese Patent Application Laid-Open No. 2002-188237) discloses a cost reduction and prevention of freezing of the ground by minimizing heat loss in a basic part (lower floor) of a large-scale freezing warehouse or the like. A heat insulating structure for the purpose is disclosed.

JP 59-208335 A JP 59-208336 A JP 2002-188237 A

The current countermeasures against the above-mentioned problems in the refrigerator with a cargo handling room have a large energy loss. On the other hand, the air introduced into the anti-freezing pipe or anti-freezing space attached to the low temperature refrigerator is In spite of the fact that it contains cold energy, it was released as it was and wasted energy.
Further, even if the techniques disclosed in Patent Documents 1, 2, or 3 are referred to, the above problems have not been solved.

  In view of the problems of the prior art, the present invention provides heat generated by inflow of outside air from the dock shelter unit when loading or unloading a refrigerated object on a transport truck in a refrigerator provided with a cargo handling room. The purpose is to prevent loss effectively with a simple structure and to make effective use after introducing the frost heave prevention pipe or frost heave prevention space provided on the floor of the low temperature refrigerator to prevent frost heave. .

  The present invention achieves such an object, and the means thereof is a refrigerator and a freezer provided with a frost heave prevention pipe or a frost heave prevention space for introducing outside air to the floor of a cargo handling room provided adjacent to the refrigerator. , A heat utilization method for a refrigerator, wherein outside air that has passed through the anti-freezing pipe or the anti-freezing space is introduced into the cargo handling chamber, and a floor portion of the cargo handling chamber provided adjacent to the refrigerator and the refrigerator In a freezer having a frost heave prevention pipe or a frost heave prevention space for introducing outside air into the refrigeration prevention pipe or a frost heave prevention space, a duct and a blower for introducing outside air that has passed through the frost heave prevention pipe or the frost heave prevention space are provided Related to the refrigerator.

In the method of the present invention, the outside air containing the cold heat source is introduced into the cargo handling chamber through the frost heave prevention pipe or the frost heave prevention space, thereby contributing to lowering the temperature of the cargo handling chamber and positive pressure in the cargo handling chamber. In order to prevent the inflow of outside air from the dock shelter or the like, the outside air cooling source through the anti-freezing pipe or the anti-freezing space is effectively used.
The apparatus of the present invention provides the same operation and effect as the method of the present invention by providing a duct and a blower for introducing outside air that has passed through the frost heave prevention pipe or the frost heave prevention space into the cargo handling chamber.
In addition, equipment, such as a frost heave prevention pipe or a frost heave prevention space for preventing frost heave, is necessary for a class F refrigerator, and is generally attached, so that a large new capital investment is not required to implement the present invention.

As described above, according to the present invention, for example, a duct and a blower for introducing outside air that has passed through the frost heave prevention pipe or the frost heave prevention space into the cargo handling chamber are provided, and the outside air that has passed through the frost heave prevention pipe or the frost heave prevention space is provided By introducing it into the cargo handling room, it contributes to lowering the temperature in the cargo handling room, positively pressurizes the cargo handling room, prevents inflow of outside air from the dock shelter, etc. It is possible to effectively use the cold source of the outside air that has passed through.
In addition, equipment such as a frost sheave prevention pipe or a frost heave prevention space for preventing frost heave is necessary for class F refrigerators and is generally attached, so that a large new capital investment is not required for carrying out the present invention. It can be implemented simply by installing a blower, a fan, a duct, a heat insulation facility, a control facility, or the like.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.
FIG. 1 is a vertical elevation view according to the first embodiment of the present invention, FIG. 2 is a sectional view showing an example (low floor type) of a slab structure of a floor portion of a class F refrigerator, and FIG. It is sectional drawing which shows the other example (high-floor type) of the slab structure of the floor part.

  In FIG. 1 showing the first embodiment of the present invention, reference numeral 1 denotes a class F refrigerator having a set temperature of −25 ° C., and a cargo handling room 2 is installed adjacent to the refrigerator 1. c is a thing to be refrigerated. In the cargo handling room 2, the room temperature is usually set to 5 ° C. or lower, and various refrigerated goods c are selected. Reference numeral 3 denotes a slab structure provided on the floor of the refrigerator 1 and the handling room 2, and reference numeral 4 denotes an object to be refrigerated between the handling room 2 and the transport truck 5 from an opening / closing door (not shown) of the handling room 2. This is a dock shelter that shields between the open / close door of the rear of the transport truck and the open / close door (not shown) of the cargo handling chamber 2 to prevent the outside air from entering and leaving when the object c is carried in or out.

  6, after warm outside air a is introduced into the frost shedding prevention pipe or frost shedding prevention space on the floor of the class F refrigerator 1 and the cargo handling room 2 and gradually cooled, the cooled outside air is cooled to the frost shedding prevention pipe or frost shedding prevention. It is a fan that feeds into the cargo handling chamber 2 from the space through the pipe line 7.

  FIG. 2 is a cross-sectional view showing a low floor type among the slab structures provided on the floor portions of the F-class refrigerator 1 and the cargo handling chamber 2, and in FIG. Toward, it is composed of the presser concrete 11, floor heat insulating material 12, earthen concrete 13, sand layer 14 and split chestnut layer 16 in contact with the soil layer 17, and a frost heave prevention pipe 15 is embedded in the split stone layer 16 Has been.

  FIG. 3 shows an example of a slab structure of a raised floor type. In FIG. 3, a frost heave prevention space 24 is opened at the upper end of the foundation 25 fixed to the upper part of the pile 26 driven into the soil layer 27. The soil concrete 23 is installed, the floor heat insulating material 22 and the presser concrete 21 are laminated thereon, and the upper surface of the presser concrete 21 is the floor surface 1a of the F-class refrigerator 1.

In the first embodiment, the warm air a is introduced into the frost heave prevention pipe 15 or the frost heave prevention space 24 by the operation of the fan 6 and gradually cooled while exchanging heat with the floor surfaces of the refrigerator 1 and the cargo handling room 2. Then, it moves, and then is introduced into the cargo handling chamber 2 via the pipe line 7.
Accordingly, since the inside of the handling chamber 2 is positively pressurized by the introduction of the outside air a, when the refrigerated material c is carried in or out between the handling chamber 2 and the transport truck 5, the dock is used. Outside air does not enter from the gap between the shelter parts 4.

In addition, since the cold source of the outside air cooled through the frost heave prevention pipe 15 or the frost heave prevention space 24 is used as it is for maintaining the cargo handling chamber 2 at a low temperature, there is no heat loss, and the system is highly efficient as a whole. It becomes.
In addition, equipment such as the anti-freezing pipe 15 or the anti-freezing space 24 for preventing freezing is necessary for the F-class refrigerator 1, and is generally provided, so a large new capital investment is required to implement the present invention. Instead, it can be carried out only by adding the fan 6 and the pipe line 7 or an auxiliary facility for heat insulation (not shown) and a control facility.

  According to the present invention, for example, a low temperature refrigerator such as a class F refrigerator and a cargo handling room attached to the low temperature refrigerator can be achieved with a simple structure without requiring a large facility, and an effective use of an existing cold heat source can be achieved. Therefore, it is possible to provide a refrigerator in which heat loss is greatly reduced and a heat utilization method thereof.

It is a vertical elevation view according to the first embodiment of the present invention. It is sectional drawing which shows an example (low floor type) of the slab structure of the floor part of F class refrigerator. It is sectional drawing which shows the other example (stilt type) of the slab structure of the floor part of F class refrigerator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 F class refrigerator 1a Floor surface of F class refrigerator 2 Loading room 3 Slab structure 4 Dock shelter 5 Carrying truck 6 Fan 7 Pipe line 11, 21 Pressing concrete 12, 22 Floor heat insulating material 13, 23 Sand concrete 14 Sand layer 15 Prevention from freezing Pipe 16 Split chestnut layer 17,27 Soil layer 24 Freezing prevention space 25 Foundation 26 Pile a Warm outside air c Refrigerated object

Claims (6)

  In a freezer having a frost heave prevention pipe or a frost heave prevention space for introducing outside air to the floor of a refrigerator and a cargo handling room provided adjacent to the refrigerator, the outside air passing through the frost heave prevention pipe or the frost heave prevention space is taken as the cargo. A method of using heat in a refrigerator, characterized by being introduced into a living room.   In a freezer having a frost heave prevention pipe or a frost heave prevention space for introducing outside air to the floor of a refrigerator and a cargo handling room provided adjacent to the refrigerator, the outside air passing through the frost heave prevention pipe or the frost heave prevention space is taken as the cargo. A refrigerator provided with a duct and a blower to be introduced into a room.   The heat utilization method for a refrigerator according to claim 1, wherein an entrance for taking in and out the refrigerated material is provided in the cargo handling room.   The refrigerator according to claim 2, wherein an entrance for taking in and out the item to be refrigerated is provided in the cargo handling room.   4. The method of using heat in a refrigerator according to claim 3, wherein a dog shelter is provided at an entrance of the cargo handling room.   The refrigerator according to claim 4, wherein a dog shelter is provided at an entrance of the cargo handling room.

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