JP4102619B2 - Warm storage - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a warm storage room in which the temperature distribution in the storage room is made uniform.
[0002]
[Prior art]
As an example of a hot and cold distribution car used in a hospital or the like, one shown in FIGS. 9 and 10 is known (see, for example, Patent Document 1). This is because the inside of the main body 1 made of a heat insulating box having both front and rear openings is divided into left and right by an intermediate wall 2 that also serves as a cold air duct, and each is further divided by a heat insulating partition wall 3 so that both ends Two refrigerating rooms 4A are formed in the middle, two refrigerating rooms 4B are formed in the center, and the adjacent refrigerating room 4A and refrigerating room 4B are provided as a pair of left and right. , 4B, a double door type door 5 is attached.
The refrigerator compartment 4B is kept cold by the cold air generated by the refrigeration apparatus installed in the machine compartment 6 being blown out from the intermediate wall 2 and circulated. On the other hand, in the warm room 4 </ b> A, a heater panel 7 with a cord heater attached to the back surface is stretched on the inner wall opposite to the partition wall 2, and the temperature is mainly maintained by radiant heat from the surface of the heater panel 7.
Then, hot food and cold food are separately placed on the tray 8, and the tray 8 is inserted over both the chambers 4A and 4B while penetrating the partition wall 3 from the entrance and exit. The cold food is stored and stored in the refrigerator compartment 4B.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-97559
[Problems to be solved by the invention]
Here, the door 5 that opens and closes the entrance and exit of the refrigerator compartment 4A and the refrigerator compartment 4B has a structure in which heat insulation is enhanced by, for example, double-stretching a synthetic resin window plate 5A. In the interior, as shown in FIG. 10, the regions s1 and s3 on both the front and rear sides near the door 5 tend to have a lower internal temperature than the internal region s2, because they are closer to the outside air. There was a risk of uneven temperature retention.
The present invention has been completed based on the above-described circumstances, and an object thereof is to make the temperature distribution in the warehouse uniform.
[0005]
[Means for Solving the Problems]
As means for achieving the above object, the invention of claim 1 is characterized in that a warming chamber is formed inside a main body comprising a heat insulating box, and an entrance is provided on at least one of the front and rear surfaces of the warming chamber. an opening has been openable door is mounted, the Yutakakurashitsu the ducts formed by the panel to open the intervals are stretched on the inside wall, at least the depth direction pressurized thermal means within the duct In a warm storage provided with a fan that is arranged over substantially the entire area and that generates a vertical circulation flow from the duct to the warm storage room, the inside of the duct is partitioned into a plurality of warm air ducts along the depth direction. The heating means is individually disposed in each warm air duct, and the heating value of the heating means arranged in the warm air duct near the door is the heating value of the heating means arranged in the warm air duct on the inner side. In Characterized in place is set to be larger base.
A second aspect of the invention is the one according to the first aspect, wherein the heating means is a cord heater stretched on the back surface or the inner side wall of the panel, and the heating of the cord heater per unit area on the stretched surface It is characterized in that the amount is set so that the warm air duct closer to the door is larger than the warm air duct on the inner side.
[0006]
[Action and effect of the invention]
<Invention of Claim 1>
The side closer to the door, that is, the side where the temperature is likely to drop due to the influence of outside air is heated more than the inside where it is less susceptible to the outside air. Keep warm with distribution.
<Invention of Claim 2>
Large code heater relatively power on the side of the warm air duct close to the door, to distribution the smaller code heater of power to the internal side of the warm air duct. Alternatively, in the case of a cord heater having the same electric power, the density is high in the warm air duct near the door, and the density is low in the warm air duct on the inner side.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<First Embodiment>
A first embodiment in which the present invention is applied to a hot and cold distribution vehicle will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the warm / cold distribution vehicle of this embodiment includes a distribution vehicle main body 10 (hereinafter simply referred to as a main body) having a rectangular box shape as a whole. It is comprised as a heat insulation box with which the heat insulating material 11, such as foaming urethane, was filled in the ceiling wall, the bottom wall, and the left and right side walls. A caster 12 is provided on the bottom surface of the main body 10, and a machine room 13 is provided on the top surface.
[0008]
A vertical frame 14 is erected at the center in the width direction of the front and rear openings of the main body 10, and an intermediate wall 15 is provided in the center of the main body 10 in the width direction. It is divided into two rooms on the left and right. Further, in each of the left and right chambers, a heat-insulating partition wall 16 is provided at a position slightly closer to the intermediate wall 15 side than the central portion in the width direction, whereby the warming chamber 17 is provided outside the partition wall 16. Two refrigerator compartments 18 are formed inside.
In other words, two sets of adjacent storage rooms 17 and refrigeration rooms 18 are formed in the left-right direction, and further divided into front and rear to form a total of four sets of storage rooms 17 and refrigeration rooms 18. Each of the warm room 17 and the cold room 18 is equipped with a double door 20. The door 20 has a heat insulating structure by, for example, double-stretching a synthetic resin window plate 21.
[0009]
The partition wall 16 between the warm room 17 and the cold room 18 is formed by stacking a plurality of unit partition walls 24 on a base 23, and each unit partition wall 24 has a movable member 25 on its lower surface side. Is mounted so as to be movable up and down, is urged downward by a spring elasticity (not shown), and is pressed against the upper surface of the unit partition wall 24 (or base 23). A pair of support arms 26 project from both the left and right sides of each unit partition wall 24, and a heater panel 40 that forms one side wall of the warming chamber 17 and an intermediate wall 15 (cold air that forms one side wall of the refrigerating chamber 18). A tray receiver 27 is provided at the projecting ends of both support arms 26.
[0010]
The tray 28 is formed in a horizontally long rectangular shape with synthetic resin or the like, and a boundary portion 28A is provided at a position slightly closer to one side than the central portion of the horizontal width, and the tray 28 is provided in a warm state across the boundary portion 28A. The food to be served is placed in a cold state on the narrow side.
The tray 28 is split between the upper and lower unit partition walls 24 while pushing up the movable member 25, and both ends are supported by the tray receiver 27, and the hot food placed on one tray 28 is stored in the warming chamber 17. Cold foods are respectively stored in the refrigerator compartment 18 so as to be refrigerated or refrigerated.
[0011]
Regarding the thermal cooling structure, the refrigerator compartment 18 side will be briefly described first. The intermediate wall 15 described above is configured by arranging two cold air ducts 30 at the front and rear sides, and the left and right sides of each cold air duct 30 are arranged. Are divided into a plurality of regions, and each of the vent groups 31 is formed. In the machine room 13, a cooler room 32 is defined so as to cover both the cold air ducts 30 and the opening of the ceiling surface of one of the refrigerating rooms 18, and a refrigeration cycle together with the compressor 33, the condenser 34, and the like. A cooler and an internal fan (not shown) are installed. Therefore, when the refrigeration cycle is operated and the internal fan is driven, cold air generated in the vicinity of the cooler is blown into each cold air duct 30 and blown out to the left and right refrigerator compartments 18 through the vent group 31. Then, a circulation flow is generated such that the cooling flow is led from the ceiling side of one refrigerating chamber 18 into the cooler chamber 32, so that the left and right refrigerating chambers 18 are cooled.
[0012]
Next, the structure of the warm room 17 will be described with reference to FIGS.
On the side wall 10A opposite to the partition wall 16 in the warm room 17, a heater panel 40 is stretched with a space between the side wall 10A. The heater panel 40 is made of an aluminum plate, and as shown in FIG. 5, side plates 41 bent at right angles to the back side are formed on the front and rear side edges, and are applied to the side wall 10A. The predetermined interval is ensured between the two.
On the back surface of the heater panel 40, the areas excluding the predetermined width portions on the front and rear side edges are substantially equally divided into three areas R1 to R3 in the front and rear direction, and each area R1 to R3 will be described in detail later. The code heater 50 is attached. Further, in these regions R1 to R3, the lower end thereof is cut by a predetermined size, and an air outlet 44 opened on the warming chamber 17 side is formed.
[0013]
A reinforcing member 42 that prevents the heater panel 40 from warping is attached to a position between the regions R1 to R3. The reinforcing member 42 is made of a channel material, and is mounted over almost the entire height and fixed with a rivet or the like. When the reinforcing member 42 is applied to the side wall 10A, the three vertical warming ducts D1 to D3 are arranged in the front-rear direction. It is provided side by side.
In addition, a flow path 47 is formed on the front and rear side edges of the heater panel 40 by providing a guide plate 45 provided with an introduction portion 46 on the upper edge with a gap between the side plate 41 and the side plate 41. A plurality of outlets 47A are formed on the surface of the flow passage 47 at intervals in the height direction.
Although not shown in detail in the machine room 13, a warming unit 48 is provided, and the warming unit 48 is provided with a fan 49 for circulating warm air, which is shown in FIG. In addition, it is arranged above the central warm air duct D2 and can blow downward.
[0014]
Now, the code heater 50 is affixed to three area | regions R1-R3 formed in the back surface of the above-mentioned heater panel 40, respectively. As shown in FIG. 4, the cord heaters 50 are arranged on almost the entire surface in a vertical jig shape, and are attached with an aluminum foil tape 52 as shown in FIG. 6.
However, the electric power of the cord heater 50L attached to the central region R2 is set to be smaller than the electric power of the cord heater 50H attached to the regions R1, R3 on both the front and rear sides. For example, the power of the central cord heater 50L is set to 200W, and the power of the cord heaters 50H on both sides is set to 300W.
[0015]
This embodiment has the structure as described above, and the operation thereof will be described subsequently.
When the function of warm / cool is activated, cold air is circulated and supplied in the refrigerator compartment 18 as described above.
On the other hand, on the side of the warming chamber 17, the inside of the warming chamber 17 is kept warm by the radiation heat from the surface of the heater panel 40 that is energized to each cord heater 50 and is mainly heated. At this time, the fan 49 is also driven, and as shown by the arrows in FIGS. 4 and 5, the warm air is blown downward through the warm air ducts D <b> 1 to D <b> 3 and circulates. A circulating flow is generated such that the air is blown into the interior of the warming chamber 17 and rises in the warming chamber 17, and at least in each of the warm air ducts D1 to D3, the temperature is not uneven in the vertical direction. Further, a part of the warm air is blown out to the warming chamber 17 side from the air outlet 47A opened in the flow passages 47 on both the front and rear sides, and the temperature rise in the warming chamber 17 is promoted.
[0016]
During this time, as shown in FIG. 3, in the warming room 17, the area S1 and S3 on both the front and rear sides close to the door 20 inevitably have a lower internal temperature than the internal area S2 because it is closer to the outside air. There is a tendency.
In this regard, in this embodiment, the power of the code heater 50H corresponding to the front and rear regions S1, S3 on the side close to the door 20 is set larger than the power of the central code heater 50L corresponding to the inner region S2. Since the temperature lowering side under the influence of the outside air is more heated than the inside which is not easily affected by the outside air, the inside of the warm room 17 is almost uniform over the entire region in the depth direction. It becomes possible to keep the temperature distribution.
[0017]
In addition, when the gap between the heater panel 40 and the side wall 10A is narrow, the urethane resin, which is the heat insulating material 11 filled in the side wall 10A due to the heat of the heater panel 40, may be secondarily foamed and may be deformed. There was a tendency to occur on the inside S2 side of the warm room 17. In that respect, since the electric power of the cord heater 50L is relatively reduced on the inside S2 side and the heat generation amount is suppressed, secondary foaming is also effectively prevented.
[0018]
Second Embodiment
FIG. 7 shows a second embodiment of the present invention.
In the second embodiment, the power setting of the cord heater 55 affixed to the central region R2 on the back surface of the heater panel 40 is the same as that of the cord heater 55 affixed to the regions R1 and R3 on the front and rear sides (for example, 300 W). However, compared to the central region R2, the regions R1 and R3 on both the front and rear sides have a larger number of zigzags, that is, they are wired with higher density.
Since other structures are the same as those in the first embodiment, portions having the same functions are denoted by the same reference numerals, and redundant description is omitted.
Also in the second embodiment, the sides S1 and S3 close to the door 20 that are susceptible to temperature drop due to the influence of outside air are heated more than the inside S2 that is less susceptible to the influence of outside air. The inside of the storage room 17 can be kept warm with a substantially uniform temperature distribution over the entire region even in the depth direction.
[0019]
<Related technologies>
In addition, as shown in FIG. 8, when the hard foam urethane resin 63 is filled as the heat insulating material between the interior plate 61 and the exterior plate 62 of the heat insulation box 60, the urethane resin 63 receives heat generated by the code heater. There is a risk of secondary foaming (portion indicated by the symbol X), but the following countermeasures have been proposed as measures for avoiding this.
For this, a heat insulating board 65 excellent in heat resistance is attached in advance to the back surface of the interior plate 61 where the secondary foaming is likely to occur, and in such a state, the foaming liquid is injected and filled.
Excessive heat from the cord heater is blocked from being transmitted to the urethane resin 63 in the back by the heat insulating board 65, and secondary foaming is prevented.
Although the heat insulation board 65 is more expensive than the urethane resin 63, it can be used at a relatively low cost because it is only partially used at a necessary location.
[0020]
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) While the cord heater is arranged on the inner side wall of the main body, it can be similarly applied to a type in which a panel is stretched with a space in front of the cord heater.
(2) You may use together what changes the electric power of the code heater illustrated in 1st Embodiment, and what changes the wiring density of the code heater illustrated in 2nd Embodiment.
(3) When the entrance / exit of the warm storage is only on the front side, the side closer to the entrance / exit is heated more than the back side.
[Brief description of the drawings]
FIG. 1 is a front view of a hot and cold distribution vehicle according to a first embodiment of the present invention. FIG. 2 is a perspective view showing an internal structure. FIG. 3 is a schematic plan sectional view. ] Perspective view seen from the back of the heater panel [FIG. 6] Partial enlarged cross-sectional view showing the attachment structure of the cord heater [FIG. 7] Rear view of the heater panel according to the second embodiment [FIG. [Fig. 9] Front view of conventional example [Fig. 10] Schematic plan view [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Distribution vehicle body 10A ... Side wall (of distribution vehicle body 10) 17 ... Warm storage room 20 ... Door 40 ... Heater panel 50H, 50L ... Code heater D1-D3 ... Warm air duct S1-S3 ... (Warm storage room 17) Area 55 ... Code heater

Claims (2)

A warming room is formed inside the main body consisting of a heat insulating box, and at least one of the front and rear surfaces of the warming room is equipped with a door that is opened and closed to open and close,
Duct is formed by the panel is stretched to open the interval on the inner wall of the Yutakakurashitsu, pressurized thermal means within the duct is arranged over substantially the entire region of at least the depth direction, and the from the duct temperature In a warm storage room provided with a fan that generates a vertical circulation flow over the storage room ,
The inside of the duct is divided into a plurality of warm air ducts along the depth direction, heating means are individually provided for each warm air duct, and the heating value of the heating means disposed in the warm air duct near the door has a heating value. A warming cabinet characterized in that it is set to be larger than the heating value of the heating means arranged in the warming duct on the inner side. The heating means is a cord heater stretched on the back surface or the inner wall of the panel, and the heating amount of the cord heater per unit area on the stretched surface is greater in the warm air duct closer to the door. The warm storage room according to claim 1, wherein the setting is larger than that of the warm air duct on the side.

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