JP2014214959A - Heat insulation box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation box which can suppress appearance deformation due to air infiltration into a vacuum heat insulation material which is caused by aged deterioration, which is the space-saving heat insulation box of a large capacity, and which has high energy saving performance as it has high heat insulation performance.SOLUTION: In a heat insulation box configured by a plurality of temperature zones, a core material including at least a fiber material, and a vacuum heat insulation material including a gas adsorbent which is vacuum sealed in a bag made of a packaging material having an excellent gas barrier property are mounted. On the surface of the vacuum heat insulation material, a first groove part 151 and a second groove part 152 are made to intersect with each other, and the grooves are disposed to upper and lower end parts. The vacuum heat insulation material includes the gas adsorbent 137. The gas adsorbent included in the vacuum heat insulation material and a heat generation part are disposed in separated positions. Thereby, the heat insulation box can be provided which is the space-saving heat insulation box of a large capacity, and which has high energy saving performance as it has high heat insulation performance.

Description

  The present invention relates to a heat insulation box to which a vacuum heat insulating material is applied.

  In recent years, with the aim of energy saving and space saving of refrigerators, there is a method of using a vacuum heat insulating material having high heat insulating performance as one means of improving the heat insulating performance of the heat insulating box, and today, the demand for energy saving is increasing, It can be said that there is an urgent need to improve the heat insulation performance by making maximum use of a vacuum heat insulating material having a heat insulation performance several times to 10 times that of rigid urethane foam within an appropriate range.

  Among them, as a conventional heat insulation box provided with a vacuum heat insulating material, for example, there is one disclosed in Patent Document 1.

  Hereinafter, the conventional heat insulation box will be described with reference to the drawings.

  FIG. 7 shows a side sectional view of the refrigerator described in Patent Document 1. As shown in FIG. In a refrigerator having a heat insulating wall composed of an outer box 2, an inner box 3, and a urethane heat insulating material 4 filled between the inner box 3 and the outer box 2, the outer box is placed between the outer box 2 and the inner box 3. 2 and a heat radiation pipe 10 formed between the vacuum heat insulation material 5 and the outer box 2, and the heat radiation pipe 10 is a first groove portion provided in the vacuum heat insulation material 5. 11 is buried.

  With this configuration, since the heat radiating pipe 10 is embedded in the first groove 11, the first groove 11 formed in the vacuum heat insulating material 5 can be narrowed compared to the conventional case by being able to adhere and fix to the vacuum heat insulating material 5. The outer box can be prevented from being deformed and the recyclability can be improved by eliminating aluminum. In recent years, efforts have been made to increase the covering area as a means for improving the heat insulation performance. When the covering area is increased, the folded portion of the heat radiating pipe 10 protrudes, and a vacuum heat insulating material cannot be provided inside the cabinet. Therefore, the second groove portion is provided in the folded portion of the radiating pipe 10 so that the heat radiating pipe 10 does not protrude. There has been proposed a vacuum heat insulating material 5 in which 10 can also be arranged inside the folded portion.

  The second groove is formed up to the upper and lower ends of the vacuum heat insulating material. The first groove 11 and the second groove are arranged so that the first groove 11 and the second groove cross each other at least on the plate-like surface. The number of the first groove portions 11 is more than the number of the second groove portions, and the width of the groove of the second groove portion is made wider than the width of the first groove portion to increase the covering area as much as possible to improve the heat insulation performance. Has been made.

JP 2007-198622 A

  However, in the refrigerator described in the above-described conventional example, although the vacuum heat insulating material 5 exists inside the hard urethane foam, the area of the vacuum heat insulating material 5 that touches the air is large. There is a concern that air easily penetrates into the interior, and that the vacuum heat insulating material that has entered the air deteriorates the degree of internal vacuum, leading to a decrease in thermal conductivity.

  Furthermore, there is a problem that the air entering the vacuum heat insulating material 5 whose internal vacuum degree has deteriorated during long-term use causes deformation such as a dent to the appearance. In particular, in the refrigerator, the heat radiating pipe 10 is disposed in the outer box 2 of the refrigerator, the vacuum heat insulating material 5 is provided with the first groove portion 11 and the second groove portion, and the vacuum heat insulating material 5 is attached so as to cover the heat radiating pipe 10. It is done.

  At this time, the vacuum heat insulating material 5 is inside the hard urethane foam, but the heat radiating pipe 10 is embedded outside the hard urethane foam and the aluminum tape when the heat radiating pipe itself is attached to the outer box 2 is used. Since an air layer is created, the external air and the vacuum heat insulating material are in direct contact with each other or indirectly through rigid urethane foam or aluminum tape.

  Therefore, in view of the above problems, the present invention suppresses the occurrence of external deformation due to air intrusion of the vacuum heat insulating material caused by aging deterioration, is a space-saving large-capacity refrigerator, and has high heat insulating performance. A high-performance refrigerator is provided.

  In order to solve the above-described conventional problems, the present invention includes a box including a plurality of heat insulating compartments, a heat generating portion provided in the box, and a heat insulating partition that partitions the box. The heat insulating box constituted by the temperature zone is mounted with a vacuum heat insulating material sealed at a reduced pressure by enclosing at least a core material with a covering material, and the vacuum heat insulating material has a groove formed in the longitudinal direction on the surface. A second groove portion having a groove portion and a groove formed in a short direction is formed up to the upper and lower end portions of the vacuum heat insulating material, and the first groove portion and the second groove portion cross each other at least on a plate-like surface. The number of the first groove portions is larger than the number of the second groove portions, the width of the groove of the second groove portion is wider than the width of the first groove portion, and the vacuum heat insulation The material contains a gas adsorbent and is prepared for the vacuum heat insulating material. It is said gas adsorbents, and the heating unit is obtained by disposed at a position apart.

  In addition, the present invention is configured by a plurality of temperature zones including a box configured by a plurality of heat insulating compartments, a heat generating unit provided in the box, and a heat insulating partition that partitions the box. The heat insulating box is equipped with a vacuum heat insulating material which is sealed at a reduced pressure by enclosing at least a core material with a covering material, and the vacuum heat insulating material is formed in a short direction with a first groove portion having a groove formed in a longitudinal direction on the surface. The second groove part having the groove formed to the upper and lower ends of the vacuum heat insulating material, the first groove part and the second groove part are formed so as to cross each other at least on a plate-like surface, The number of the first groove portions is larger than the number of the second groove portions, the width of the groove of the second groove portion is wider than the width of the first groove portion, and the vacuum heat insulating material contains a gas adsorbent. In addition, the gas adsorbent provided in the vacuum heat insulating material, Serial in which is disposed at a position which does not overlap with the heat generating portion on the projection surface in the thickness direction of the vacuum heat insulating material.

  As a result, the gas adsorbent provided in the vacuum heat insulating material can be prevented from becoming high temperature, the gas adsorbent can be prevented from being highly activated in a short period of time, and the function can be demonstrated over a long period of time. Realizes and prevents the aging of the jacket material around the gas adsorbent to reduce the effect of the gas adsorbent touching the air, and even when the heat insulation box is used for a long time, the gas mounted on the vacuum heat insulating material Since the adsorbent can continuously adsorb air entering from the outside, it is possible to maintain the vacuum degree of the vacuum heat insulating material and to suppress the deterioration of the thermal conductivity of the vacuum heat insulating material.

  The heat insulating box of the present invention can maintain the vacuum degree of the vacuum heat insulating material even when the heat insulating box is used for a long time, can prevent deterioration of the thermal conductivity of the vacuum heat insulating material, and is excellent in energy saving. The body can be provided.

Front sectional view of the refrigerator according to Embodiment 1 of the present invention. The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention The top view of the vacuum heat insulating material used for the refrigerator in Embodiment 1 of this invention Sectional drawing of the vacuum heat insulating material which applied the gas adsorbent in Embodiment 1 of this invention Sectional drawing of the wall surface of the refrigerator in Embodiment 1 of this invention Aged deterioration image diagram of the vacuum heat insulating material to which the gas adsorbent in Embodiment 1 of the present invention is applied Arrangement diagram of gas adsorbent of vacuum heat insulating material in Embodiment 1 of the present invention Side sectional view of a refrigerator explaining a refrigerator according to the prior art

  1st invention comprised with the several temperature zone provided with the box comprised by the some heat insulation division, the heat-emitting part with which the said box was equipped, and the heat insulation partition part which partitions off the said box. The heat insulating box is equipped with a vacuum heat insulating material which is sealed at a reduced pressure by enclosing at least a core material with a covering material, and the vacuum heat insulating material is formed in a short direction with a first groove portion having a groove formed in a longitudinal direction on the surface. The second groove part having the groove formed to the upper and lower ends of the vacuum heat insulating material, the first groove part and the second groove part are formed so as to cross each other at least on a plate-like surface, The number of the first groove portions is larger than the number of the second groove portions, the width of the groove of the second groove portion is wider than the width of the first groove portion, and the vacuum heat insulating material contains a gas adsorbent. And the gas adsorbent provided in the vacuum heat insulating material, A heating unit is obtained by disposed at a position apart.

  As a result, the gas adsorbent provided in the vacuum heat insulating material can be prevented from becoming high temperature, the gas adsorbent can be prevented from being highly activated in a short period of time, and the function can be demonstrated over a long period of time. Realizes and prevents the aging of the jacket material around the gas adsorbent to reduce the effect of the gas adsorbent touching the air, and even when the heat insulation box is used for a long time, the gas mounted on the vacuum heat insulating material Since the adsorbent can continuously adsorb air entering from the outside, it is possible to maintain the vacuum degree of the vacuum heat insulating material and to suppress the deterioration of the thermal conductivity of the vacuum heat insulating material.

  2nd invention was comprised by the several temperature zone provided with the box comprised by the some heat insulation division, the heat-emitting part with which the said box was equipped, and the heat insulation partition part which partitions off the said box. The heat insulating box is equipped with a vacuum heat insulating material which is sealed at a reduced pressure by enclosing at least a core material with a covering material, and the vacuum heat insulating material is formed in a short direction with a first groove portion having a groove formed in a longitudinal direction on the surface. The second groove part having the groove formed to the upper and lower ends of the vacuum heat insulating material, the first groove part and the second groove part are formed so as to cross each other at least on a plate-like surface, The number of the first groove portions is larger than the number of the second groove portions, the width of the groove of the second groove portion is wider than the width of the first groove portion, and the vacuum heat insulating material contains a gas adsorbent. The gas adsorbent provided in the vacuum heat insulating material is In which is disposed at a position which does not overlap with the heat generating portion on the projection surface in the thickness direction of the vacuum heat insulating material.

  As a result, the gas adsorbent provided in the vacuum heat insulating material can be prevented from becoming high temperature, the gas adsorbent can be prevented from being highly activated in a short period of time, and the function can be demonstrated over a long period of time. Realizes and prevents the aging of the jacket material around the gas adsorbent to reduce the effect of the gas adsorbent touching the air, and even when the heat insulation box is used for a long time, the gas mounted on the vacuum heat insulating material Since the adsorbent can continuously adsorb air entering from the outside, it is possible to maintain the vacuum degree of the vacuum heat insulating material and to suppress the deterioration of the thermal conductivity of the vacuum heat insulating material.

  A third invention is the refrigeration cycle according to the first invention or the second invention, wherein the heat insulation box includes a compressor, a heat radiating pipe provided in the condenser, a capillary tube, and a cooler. The heat generating part is the heat radiating pipe.

  By this, it becomes the high temperature side in a refrigerating cycle, it can suppress that the heat of a heat radiating pipe higher than outside temperature transfers to a gas adsorbent, and it can avoid that a gas adsorbent becomes a heat spot. It becomes possible.

  Further, even when the gas adsorbent protrudes more than the vacuum heat insulating material, it does not have a convex shape to the outer box, and appearance deformation can be prevented.

  Moreover, since the deformation | transformation by the air penetration | invasion of the vacuum heat insulating material maintained at a low vacuum degree can be prevented, the external appearance deformation | transformation of an outer box can also be prevented.

  In a fourth aspect based on the third aspect, the heat radiating pipe is disposed on a surface of the vacuum heat insulating material, and the gas adsorbent is disposed between at least two heat radiating pipes. It is equipped with a vacuum insulation material.

  Thereby, since there is no location which cannot be thermally insulated locally in a vacuum heat insulating material, heat dissipation capability can be increased and energy-saving property can be improved.

  According to a fifth invention, in the third or fourth invention, the air adsorbent is positioned on a surface side of the vacuum heat insulating material opposite to a side where the heat radiating pipe is disposed.

  As a result, the heat radiating pipe and the gas adsorbent are located on the opposite surface through the core of the vacuum heat insulating material, so that it is possible to reduce the influence of heat from the heat radiating pipe.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the present invention is not limited to the embodiments.

  Note that detailed descriptions of parts that are the same as those in the conventional configuration and that have no difference are omitted. Further, the present invention is not limited to the embodiments.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a front sectional view of a heat insulating box according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of the heat insulation box according to Embodiment 1 of the present invention. FIG. 3 is a plan view of a vacuum heat insulating material used in the refrigerator according to Embodiment 1 of the present invention.

  As shown in FIGS. 1, 2, and 3, the main body 101, which is a heat insulating box forming a box, is made of a metal (for example, iron plate) outer box 124 that opens forward and a hard resin (for example, ABS). This is a heat insulating box made up of an inner box 125 and a hard urethane foam 126 filled with foam between the outer box 124 and the inner box 125. A refrigerating chamber 102 provided at the top of the main body 101, an upper freezing chamber 103 provided below the refrigerating chamber 102, an ice making chamber 104 provided in parallel to the upper freezing chamber 103 under the refrigerating chamber 102, A vegetable compartment 106 provided at the lower part of the main body, an upper freezing compartment 103 installed in parallel, and a lower freezing compartment 105 provided between the ice making chamber 104 and the vegetable compartment 106 are configured.

The top surface portion of the main body 101 which is a heat insulation box body is provided with a machine room 119 provided with a dent in a step-like manner toward the back surface of the heat insulation box body, and is composed of a first top surface portion 108 and a second top surface portion 109. ing. A compressor 117 disposed in the stepped recess, a dryer (not shown) for removing moisture, a condenser (not shown), a heat radiating pipe 143, a capillary tube 118, a cooler ( (Not shown) are successively connected in an annular manner to form a refrigeration cycle, and a refrigerant is sealed in the refrigeration cycle to perform a cooling operation.

  In recent years, R600a, which is a flammable refrigerant, is used as a refrigerant for environmental protection.

  Here, the vacuum heat insulating materials 127, 128, 129, 130, and 131 constitute the main body 101 of the heat insulating box together with the hard urethane foam 126.

  Here, the vacuum heat insulating materials 127, 128, 129, and 130 are attached to the outer box 124 in contact with the inside of the top surface, the back surface, the left side surface, and the right side surface, respectively. The vacuum heat insulating material 131 is attached in contact with the bottom surface of the inner box 125.

  A heat radiating pipe 143 is disposed on the back and side surfaces of the main body 101 which is a heat insulating box, and a heat radiating length is secured by bending one pipe into, for example, a U-shape. It is pasted.

  Vacuum heat insulating materials 128, 129, and 130 are attached to a heat radiating pipe 143 disposed on the side surface of the main body 101.

  The vacuum heat insulating materials 128, 129, and 130 include a first groove portion 151 and a second groove portion 152 in which the heat radiating pipe 143 is installed. The first groove portion 151 is in the longitudinal direction of the vacuum heat insulating materials 128, 129, and 130 (that is, heat insulating material). It is a concave groove formed up to the upper and lower end portions 153 of the vacuum heat insulating materials 128, 129, 130 along the vertical direction of the main body 101 which is a box, and a plurality of first groove portions 151 are arranged in parallel to each other. . In the present embodiment, there are three first groove portions.

  The second groove 152 is a concave groove that extends along the short direction of the vacuum heat insulating materials 128, 129, and 130 (that is, the front-rear direction of the main body 101 that is a heat-insulating box), and one groove in the vertical direction of the first groove 151. They are arranged one by one and are formed so as to cross each other.

  Bending portions that are bent at the upper and lower ends of the heat radiating pipe 143 are disposed on the bottom surfaces of the upper and lower second groove portions 152.

  One of the upper and lower grooves of the second groove 152 (in this embodiment, the lower second groove 152) is connected to the introduction groove 154 of the heat radiating pipe 143.

  The heat radiating pipe 143 is introduced from the peripheral edge of the vacuum heat insulating materials 128, 129, and 130 through the introduction groove 154 of the heat radiating pipe 143 into the second groove portion 152, and the linear portion is disposed in the first groove portion 151. A bent portion is disposed on the bottom surface of the groove portion 152 and is disposed so as to pass through the outlet groove 155 of the heat radiation pipe 143 of the first groove portion 151 formed on the upper portion of the second groove portion 152.

  As a result, almost the entire heat radiating pipe 143 meandering up and down does not jump out from the upper and lower ends 153 of the vacuum heat insulating materials 128, 129, and 130, and between the vacuum heat insulating materials 128, 129, 130 and the side plate of the outer box 124. Be placed.

  A gas adsorbent 137 is mounted on each of the vacuum heat insulating materials 128, 129, and 130, and the gas adsorbents of the vacuum heat insulating materials 128, 129, and 130 are arranged on the inner side (inner box side) of the center. It is installed.

  The heat radiating pipe 143 is installed on the outer casing 124 side of the vacuum heat insulating materials 128, 129, and 130.

  The refrigerator compartment 102, the ice making compartment 104, and the upper freezer compartment 103 are partitioned by a first heat insulating partition 110.

  Further, the ice making chamber 104 and the upper freezing chamber 103 are partitioned by a second heat insulating partition 111.

  In addition, the ice making chamber 104, the upper freezing chamber 103, and the lower freezing chamber 105 are partitioned by a third heat insulating partition 112.

  The lower freezer compartment 105 and the vegetable compartment 106 are partitioned by a fourth heat insulating partition 113.

  A cooling chamber 123 is provided on the back surface of the main body 101 that is a heat insulating box, and a cooler 107 that generates fin-and-tube type cool air is representatively provided in the cooling chamber 123 as the second heat insulating partition 111. In addition, the rear side of the lower freezer compartment 105 including the rear region of the third heat insulating partition 112 is vertically arranged in the vertical direction. The material of the cooler 107 is aluminum or copper.

  In the vicinity of the cooler 107 (for example, the upper space), the cold air generated by the cooler 107 is stored in each storage room of the refrigerator compartment 102, the ice making room 104, the upper freezer room 103, the lower freezer room 105, and the vegetable room 106 by a forced convection method. A cool air blowing fan 116 for blowing air is disposed, and a radiant heater 136 made of a glass tube is provided in a lower space of the cooler 107 as a defrosting device for defrosting the frost adhering to the cooler 107 and the cold air blowing fan 116 during cooling. It has been.

  The defroster is not particularly specified, and a pipe heater in close contact with the cooler 107 may be used in addition to the radiant heater 136.

  Next, cooling of the heat insulating box will be described.

  While the high-temperature and high-pressure refrigerant discharged from the compressor 117 finally reaches a dryer (not shown) disposed in the machine room 119, the outer casing 124 particularly in the heat radiating pipe 143 installed in the outer casing 124. It is cooled and liquefied by heat exchange with the outside air and the hard urethane foam 126 in the cabinet.

  Next, the liquefied refrigerant is decompressed by the capillary tube 118, flows into the cooler 107, and exchanges heat with the internal air around the cooler 107. The cold air subjected to heat exchange is blown into the cabinet by a nearby cool air blower fan 116 to cool the inside of the cabinet.

  Thereafter, the refrigerant is heated and gasified to return to the compressor 117. When the inside of the refrigerator is cooled and the temperature of the freezer compartment sensor (not shown) becomes equal to or lower than the stop temperature, the operation of the compressor 117 is stopped.

  Although the cool air blowing fan 116 may be directly disposed in the inner box 125, it is disposed in the second heat insulating partition 111 assembled after foaming, and the manufacturing cost is reduced by performing block processing of the parts. It is also possible.

  Here, the heat generating part means the compressor 117 and the heat radiating pipe 143.

  Next, a vacuum heat insulating material using the gas adsorbent 137 of the present embodiment will be described.

The vacuum heat insulating material includes a core material 132 including at least a fiber material, and a packaging material 1 having excellent gas barrier properties.
33 and the vacuum-sealed gas adsorbent 137 are covered with a jacket material 135 having excellent gas barrier properties. After the jacket material 135 is vacuum-sealed, the packaging material 133 is formed by a member 134 having protrusions. A hole is formed to allow the inside of the packaging material 133 and the inside of the outer covering material 135 to communicate with each other.

  In the present embodiment, the container made of the packaging material 133 is a metal container, and has a gas adsorbent 137 having a powder shape in the container.

  The core material 132 including the fiber material includes fibers of 1% to 100% with respect to the weight of the core material 132, and may be a composite other than the fiber material and the fiber material.

  In addition, the packaging material 133 having excellent gas barrier properties is a metal container in the present embodiment, but is a film or sheet-like member that is hardly gas permeable and can be made.

  For example, it may be a film laminated in the order of polypropylene film, aluminum foil, and low-density polyethylene. By enclosing the gas adsorbent 137, it is made independent from the surrounding space, and heat-sealed bags and pillow bags on all sides. And gusset bags.

Further, the gas permeability is preferably 10 ⁴ [cm ³ / m ² · day · atm] or less, and more preferably 10 ³ [cm ³ / m ² · day · atm] or less.

  The gas adsorbent 137 is composed of an adsorbing material and a container that can adsorb a non-condensable gas contained in the gas.

  Main adsorbing materials include alloys composed of zirconium, vanadium and tungsten, alloys containing iron, manganese, yttrium, lanthanum, and one kind of rare earth elements, Ba-Li alloys, and metal ion exchanged zeolites. is there.

  Accordingly, since nitrogen having approximately 75% in the air can be adsorbed at room temperature, a high degree of vacuum can be obtained.

  As main containers, there are metal materials such as aluminum, iron, trunk, and stainless steel, and aluminum is preferable in consideration of cost and handling.

  The member 134 having protrusions has a portion having a remarkably large curvature as compared with the surrounding curvature. Since the portion having a large curvature receives the same force in a smaller area, the force applied per unit area increases. Therefore, when a portion having a large curvature is pressed against the packaging material 133, a through hole is likely to be generated in the packaging material 133.

  In the present embodiment, the jacket material 135 having excellent gas barrier properties is a vapor deposition layer film.

  The method of making a hole is made by applying pressure to the protrusion.

  Here, the term “communication” means that the space separated between the inside of the packaging material and the outside of the packaging material is made into a continuous space.

  In addition, the thermal conductivity of the vacuum heat insulating material produced using the core material containing the fiber material is lower in the low pressure region than the heat conductivity of the vacuum heat insulating material produced using the core material made only of the powder material. Small and large in high pressure range.

  Therefore, it is important for the vacuum heat insulating material produced using the core material containing the fiber material to keep the pressure inside the jacket material low.

  In addition, since the vacuum heat insulating material using the gas adsorbent 137 used in the present embodiment has the gas adsorbent 137 in the jacket material 135, the pressure inside the jacket material 135 is maintained low, The thermal conductivity of the vacuum heat insulating material using the core material 132 containing the fiber material is kept low.

  Therefore, the pressure inside the jacket material 135 is kept low.

  In general, the thermal conductivity of the vacuum heat insulating material is determined by the sum of the heat conduction by the core material 132 and the heat conduction by the residual gas in the jacket material 135.

  For example, when the core material 132 includes powder, the mean free path of the gas present in the core material 132 is short, so that the heat conductivity by the gas is very small, and the heat conduction by the core material 132 is dominant.

  On the other hand, when the core material 132 is a fiber, since the number of contact points between the fibers is small, the thermal conductivity of the core material 132 is very small. However, since the mean free path of the gas is large, Thermal conductivity becomes dominant.

  Therefore, when the core material 132 is made of only fibers, such an effect is great. Therefore, in the fiber core material, keeping the inside of the jacket material 135 at a low pressure is extremely effective for reducing the thermal conductivity of the vacuum heat insulating material. It becomes an effective means.

  Here, the fiber aggregate is an aggregate composed only of fibers, and may be molded with a binder, acid, heat, or the like.

  In addition, the vacuum heat insulating material has a core material 132 inside, and the core material 132 is a jacket material 135 in which an inorganic fiber aggregate such as glass wool is heated and dried, and then a vapor deposition layer film and a metal foil layer film are bonded together. It is formed by inserting inside and evacuating the inside to seal the opening.

  The vapor deposition layer film is a composite plastic film in which an aluminum vapor deposition film is sandwiched between a nylon film and a high density polyethylene film, and the metal foil layer film is a composite plastic film in which an aluminum foil is sandwiched between a nylon film and a high density polyethylene film. .

  Moreover, the sealing surface of a vapor deposition layer film and a metal foil layer film makes the vapor deposition layer film side into one plane shape, and comprises the surface on the metal foil layer film side in three dimensions. And the vapor deposition layer film side is arranged in contact with the outer box 124 or the inner box 125.

  About the heat insulation box comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  In recent years, in an effort to save energy, the heat insulation performance is maximized within an appropriate range by using a vacuum insulation material having a heat insulation performance several times to ten times that of the rigid urethane foam 126. Insulated boxes with improved performance and strength are also on the market.

  Among them, in the present embodiment, the vacuum heat insulating material contains the gas adsorbent, and the core material 132 is interposed between the gas adsorbent 137 provided in the vacuum heat insulating material and the heat radiating pipe 143 which is a heat generating portion. Are arranged.

  As shown in FIG. 5, in other words, the gas adsorbent 137 and the heat radiating pipe 143 are arranged at a certain distance.

  In that case, it is reducing that the heat | fever of the thermal radiation pipe 143 reaches | attains a gas adsorbent by interposing the core material 132 which is a heat insulating material.

  Further, as shown in FIG. 3, the gas adsorbent 137 is disposed on the projection surface in the thickness direction of the vacuum heat insulating material 130 at a position that does not overlap with the heat radiating pipe 143 and the compressor 117 which are heat generating portions. .

  With the above configuration, the gas adsorbent 137 provided in the vacuum heat insulating material can be prevented from becoming high temperature, the gas adsorbent 137 is prevented from being highly activated in a short period of time, and functions over a long period of time. Can be realized.

  Furthermore, the influence of the gas adsorbent 137 coming into contact with the air can be reduced by preventing the aging of the outer jacket material 135 around the gas adsorbent 137, and even when the heat insulating box is used for a long time, the vacuum heat insulating material can be used. Since the mounted gas adsorbent 137 can continuously adsorb air entering from the outside, it is possible to maintain the vacuum degree of the vacuum heat insulating material and suppress deterioration of the thermal conductivity of the vacuum heat insulating material.

  Further, in the case where a metal container made of the packaging material 133 is used as a container for storing the gas adsorbent 137 as in this embodiment, if the container is located near the high temperature part, the heat conduction Since the metal is a good metal, the portion becomes a heat spot and is always maintained at a high temperature, the gas adsorbent is highly activated, and there is a possibility that the adsorptive properties are deteriorated in a short period of time.

  However, as in the present embodiment, the gas adsorbent and the heat generating portion are disposed at positions separated from each other, that is, separated from each other, so that the function can be exhibited over a long period of time.

  Further, as in the present embodiment, when a vapor deposition layer film is used as the outer covering material 135 of the vacuum heat insulating material, the deterioration is accelerated by a rise in temperature. There is a concern that the amount of gas intrusion increases due to deterioration of 135.

  However, as in the present embodiment, the gas adsorbent 137 and the heat generating portion are arranged at positions apart from each other, that is, by separating them, it is possible to avoid the surroundings of the gas adsorbent 137 from becoming a high temperature. It becomes possible to suppress the deterioration of the workpiece 135.

  Moreover, it is a vacuum heat insulating material provided with the gas adsorbent 137, and the gas adsorbent 137 is disposed on the inner side (inner box side) of the heat insulating box body in the vacuum heat insulating material, and a heat radiating pipe 143 as a heat generating portion is provided. It is arranged on the outer side (outer box side).

  As a result, the gas adsorbent 137 and the heat generating portion can be reliably separated from each other, the temperature around the gas adsorbent 137 can be avoided, and the long-term reliability of the vacuum heat insulating material can be improved.

  Further, the gas adsorbent 137 which is disposed inside the main body 101 and reduces the influence of exposure to air can adsorb air entering the vacuum heat insulating material from the outside even when the heat insulating box is used for a long time. Therefore, the vacuum degree of the vacuum heat insulating material can be maintained, and the deterioration of the thermal conductivity of the vacuum heat insulating material can be prevented.

As shown in FIG. 5, the heat radiating pipe 143 is disposed inside the outer box 124 of the main body 101 of the heat insulating box and is fixed by the aluminum tape 145. The aluminum tape 145 is disposed from the inside to the outside of the outer box 124 and the inner box 125 filled with the hard urethane foam 126. That is, the air in the aluminum tape 145 communicates with the outside.

  This is to prevent the air present in the aluminum tape 145 from expanding due to the heat generated when the rigid urethane foam 126 is foamed in the manufacturing process of the heat insulation box and the outer box 124 being deformed by the pressure. is there.

  Therefore, although the vacuum heat insulating material is inside the hard urethane foam 126, the heat radiating pipe 143 is disposed outside the hard urethane foam 126, and aluminum when the heat radiating pipe 143 itself is attached to the outer box 124. Since an air layer is created by the tape 145, the external air and the vacuum heat insulating material are in direct contact or indirectly through the rigid urethane foam 126 and the aluminum tape 145.

  For this reason, when the heat insulation box is used for a long period of time, the vacuum insulation that is in contact with the air is affected by the air entering from the outside as time passes, and the degree of internal vacuum deteriorates. In addition to expansion, the outer appearance of the heat insulating box body is deformed.

  As described above, the gas adsorbent 137 in the vacuum heat insulating material is installed at a location away from the heat generating portion such as the compressor 117 and the heat radiating pipe 143.

  As a result, since the container of the gas adsorbent 137 is a metal material, the container absorbs heat from the heat generating part, creates a place (heat spot) that cannot be locally insulated in the vacuum heat insulating material, and reduces the heat dissipation capability. To prevent that.

  In particular, when at least two heat radiating pipes 143 are embedded in the surface of the vacuum heat insulating material in the heat insulating box of the present embodiment, the gas adsorbent 137 is desirably disposed between the heat radiating pipes.

  Thereby, heat dissipation capability can be increased and energy-saving property can be improved.

  Since the gas adsorbent 137 used in the present embodiment can adsorb nitrogen present at a rate of approximately 75% in the air even at room temperature, residual air inside the vacuum heat insulating material can be reduced, and vacuum heat insulation can be achieved. The degree of vacuum and rigidity of the material can be improved, and the thermal conductivity can be reduced.

  The temperature in the heat insulation box is divided into a refrigeration temperature range of approximately 1 ° C to 5 ° C for storing fresh food and beverages and a refrigeration temperature range of approximately -18 ° C or less for storing frozen foods. ing.

  In this case, if the gas adsorbent 137 in the vacuum heat insulating material is arranged on the projection surface in the horizontal direction of the storage room in the refrigeration temperature zone, when it is desired that the adsorption characteristic is exhibited at a certain initial stage without becoming too low in temperature. good.

  As in this embodiment, by mounting the vacuum heat insulating material on the side or back of the heat insulating box, the above-mentioned temperature range can be covered over a wide range, so the heat insulation from the outside is prevented by the high heat insulating property of the vacuum heat insulating material. A box that can be controlled over a wide range and has excellent energy savings.

  Moreover, mounting the gas adsorbent 137 on the side surface or the back surface of the vacuum heat insulating material having the greatest rigidity or vacuum degree is mounted on a portion that becomes a skeleton of the main body strength of the heat insulating box, and therefore the deterioration of the vacuum heat insulating material. By aiming at suppression, the heat insulation capacity of the heat insulation box can be maintained for a long time.

  Further, since the gas adsorbent 137 is disposed on the inner side (inner box side) of the heat insulating box body in the vacuum heat insulating material, even when the gas adsorbent 137 protrudes from the vacuum heat insulating material, the outer box of the main body 101. It does not have a convex shape to 124, and appearance deformation can be prevented.

  In the present embodiment, the gas adsorbent 137 is disposed on the inner side (inner box side) than the center of the vacuum heat insulating material to be mounted. However, when the gas adsorbent 137 is disposed on the outer side (outer box side). When the packaging material 133 made of a metal material having good thermal conductivity is used as in the present application, the heat of the heat radiating pipe 143 is directly transmitted to the gas adsorbent 137 via the outer box and the outer jacket material. For this reason, it is effective to provide a heat insulating material between the gas adsorbent 137 and the jacket material 135 or the outer box as relaxation of heat transfer.

  In this case, the gas adsorbent 137 and the core material 132 included in the vacuum heat insulating material 135 can be used as the heat insulating material, and the core material 132 is arranged on the outer material 135 side of the gas adsorbent 137. That is, it is possible to suppress heat conduction by embedding the gas adsorbent 137 in the core member 132 and using a heat insulating material.

  In addition, when the gas adsorbent 137 is likely to protrude and deform more than the vacuum heat insulating material, the vacuum heat insulating material core 132 at the location where the gas adsorbent 137 is mounted is recessed to form the vacuum heat insulating material. It is better to consider so that it does not protrude.

  In the present embodiment, a vacuum heat insulating material is attached so as to reach the freezing temperature zone.

  Thereby, a part with a large temperature difference with external air or the other room | chamber interior can be effectively insulated, and the performance of a vacuum heat insulating material can be utilized.

  As described above, the heat insulating box according to the present invention is capable of continuously adsorbing the residual air inside the vacuum heat insulating material and the intruding air from the outside because the gas adsorbent can continuously absorb heat, even after aging. Suppressing the rate and deformation of the external appearance of the main body, space-saving, large capacity and high heat insulation performance can be maintained for a long time. Therefore, it can be used for a heat insulation box for home use, etc. for the purpose of reducing the energy-saving running cost and improving the texture of the finished product in consideration of the environment.

DESCRIPTION OF SYMBOLS 101 Main body 110 1st heat insulation partition part 111 2nd heat insulation partition part 112 3rd heat insulation partition part 113 4th heat insulation partition part 117 Compressor 124 Outer box 125 Inner box 127, 128, 129, 130, 131 Vacuum insulation Material 132 Core material 133 Packaging material 135 Outer material 137 Gas adsorbent 143 Radiation pipe 151 First groove 152 Second groove 153 Upper and lower ends

Claims (5)

A heat insulating box made up of a plurality of temperature zones, comprising a box made up of a plurality of heat insulating compartments, a heat generating part provided in the box, and a heat insulating partition that partitions the box, A vacuum heat insulating material encapsulating the core material with a jacket material and sealed under reduced pressure is mounted, and the vacuum heat insulating material has a first groove portion having a groove formed in the longitudinal direction on the surface and a second groove formed in the short direction. The groove portion is formed up to the upper and lower end portions of the vacuum heat insulating material, and the first groove portion and the second groove portion are formed so as to cross each other at least on a plate-like surface, and the number of the first groove portions Is provided more than the number of the second groove portions, the groove width of the second groove portion is wider than the width of the first groove portion, and the vacuum heat insulating material contains a gas adsorbent and the vacuum heat insulating material. The gas adsorbent provided in the material and the heat generating part, Insulating box body that is disposed at a position. A heat insulation box composed of a plurality of temperature zones provided with a box composed of a plurality of heat insulation sections and a heat insulation partition that partitions the box, and at least a core material is enclosed in a jacket material and sealed under reduced pressure. The vacuum heat insulating material is formed with a first groove portion having a groove formed in a longitudinal direction on the surface and a second groove portion having a groove formed in a short direction to the upper and lower ends of the vacuum heat insulating material. The first groove and the second groove are formed so as to cross each other at least on a plate-like surface, and the number of the first grooves is larger than the number of the second grooves, The groove width of the second groove portion is wider than the width of the first groove portion, and the vacuum heat insulating material includes a gas adsorbent, and the gas adsorbent provided in the vacuum heat insulating material includes: On the projection surface in the thickness direction of the vacuum heat insulating material, Insulating box body that is disposed at a position not overlapping the part. The heat insulating box includes a refrigeration cycle having a compressor, a heat radiating pipe provided in a condenser, a capillary tube, and a cooler, and the heat generating part is the heat radiating pipe. 2. The heat insulating box according to 2. The said heat radiating pipe is arrange | positioned on the surface of the said vacuum heat insulating material, and the said vacuum heat insulating material is mounted so that the said gas adsorbent may be arrange | positioned between at least two said heat radiating pipes. Insulated box. 5. The heat insulating box according to claim 3, wherein the gas adsorbent is positioned on a surface side of the vacuum heat insulating material opposite to a side on which the heat radiating pipe is disposed.