JP3402436B2 - Showcase lower frame structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower frame structure capable of suppressing dew condensation on the front side of a lower frame supporting a lower portion of a door arranged in a showcase.

[0002]

[Prior Art] At grocery stores and convenience stores,
Showcases that store and display foods and beverages in a refrigerated state are preferably used. This showcase is, for example, as shown in FIG. 9, an insulating box body 1 in which a foam insulating material 16 such as urethane is filled between an inner plate 12 and an outer plate 14.
A storage room 60 for the display items such as foods and beverages is defined inside 8. Further, the heat insulating box 18 is mounted on a chassis 20 having a machine room 26 defined therein, and a cooler (both of which is provided above the heat insulating box 18 from the refrigerating device arranged in the machine room 26). The storage chamber 60 is cooled by circulating a coolant (not shown).

A rectangular opening 18a that opens to the front is provided at the front of the heat insulating box 18, and a door 2 that opens and closes the opening 18a is formed in the lower inner circumference of the front opening 18a.
A lower frame 36 that slidably supports 2 is provided. The lower frame 36 has a bottom plate 37, as shown in FIG.
Three rising parts 46a, which are spaced apart in the front-back direction on the upper surface of the
46b and 46c are erected in parallel, and the front rising portion 46a
And the neutral rising portion 46b, and the neutral rising portion 46
b on the bottom plate 37 between the rear rising portion 46c and the rear rising portion 46c.
Are provided respectively, and the door 22 is slidably supported by each rail 42.

[0004]

In the operating state of the showcase, the lower frame 36 is also cooled as the storage chamber 60 is cooled, and the internal temperature of the storage chamber 60 and the outside temperature and the outside humidity are changed. Due to this difference, dew condensation is caused on the surface of the front rising portion 46a exposed to the outside in the lower frame 36. That is, the thickness of the front rising portion 46a of the lower frame 36 was not set in consideration of the heat insulating property, and it was not possible to suppress the occurrence of dew condensation.

Further, since the upper end of the front rising portion 46a is formed flat, it is pointed out that dew condensation accumulates on the upper end, which makes it unattractive and unsanitary. At the front end of the bottom plate 37 of the lower frame 36, a front rising portion 46 is provided.
A support portion 38, which extends forward from a and is bent at a right angle downward, is formed, and the support portion 38 is brought into contact with the front end surface of the heat insulating box body 18, thereby lowering the lower frame 36 to the heat insulating box body 18. Is configured for positioning. In this case,
Since a step is formed between the front surface of the front rising portion 46a and the front surface of the support portion 38, dew condensation water accumulates on this step portion, which makes the appearance unpleasant and unsanitary. Further, since the lower end of the support portion 38 of the lower frame 36 is formed in a square shape as shown in FIG. 9, when the condensed water collected in the stepped portion overflows and flows down the front surface of the support portion 38, There has been a problem that the floor surface is wetted by dripping directly from the lower end of the support portion 38 onto the floor surface on which the showcase is installed.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in the above-mentioned conventional technique, and it is a solution to this problem. An object of the present invention is to provide a lower frame structure of a showcase that can be kept hygienic by preventing it from flowing down and collecting even if dew condensation occurs.

[0007]

[Means for Solving the Problems] Overcoming the above-mentioned problems,
In order to achieve the intended purpose, the lower frame structure of the showcase according to the present invention has a heat-insulating box body in which a heat insulating material is filled between an inner plate and an outer plate, and an opening opening to the front is opened. A lower frame, on which the front and rear doors for opening and closing the opening are slidably supported, is arranged at the lower portion of the inner periphery of the front opening, and the lower frame is separated from the bottom plate in the front-rear direction by 3 A rising part of the book is erected, and a front groove for accommodating the lower part of the front door is defined between the front rising part and the middle rising part, and between the middle rising part and the rear rising part. In a showcase in which a rear groove for accommodating the lower portion of the rear door is defined, the front rising portion of the lower frame facing the front side of the front door has a larger thickness dimension than other rising portions, and has a heat insulating property. It is characterized in that it is set to have a sufficient thickness. Further, in order to overcome the above-mentioned problems and achieve the intended purpose, the lower frame structure of the showcase according to another invention of the present application is a heat-insulating box body filled with a heat insulating material between an inner plate and an outer plate,
An opening that opens to the front is opened, and the doors before and after opening and closing the opening can be slid at the bottom of the inner circumference of this front opening.
A lower frame supported by the lower frame is disposed on the bottom plate of the lower frame.
The three rising parts are erected so as to be spaced apart from each other in the front-rear direction.
Place the lower part of the front door between the rising part and the neutral rising part.
The front groove that accommodates it is defined, and the neutral rising part and rear part
A rear groove for accommodating the lower part of the rear door is provided between the rising portion and
In the defined showcase, the front rising portion formed on the front side of the lower frame and exposed to the outside facing the front side of the front door has a larger thickness dimension than other rising portions.
Along with being set to a sufficient thickness that has a good heat insulation property,
It is characterized by having a hollow portion.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a lower frame structure of a showcase according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments. The same members as those described in the related art will be designated by the same reference numerals.

As shown in FIGS. 1 to 3, a showcase 10 according to the embodiment has a heat insulating box body 18 in which a foam heat insulating material 16 such as urethane is filled between an inner plate 12 and an outer plate 14.
And a chassis 20 on which the heat box 18 is placed. A plurality of legs 24 are provided on the lower surface of the chassis 20 for providing a predetermined space between the chassis 20 and the floor, and a refrigerating device 28, an electrical equipment box 30 and the like are housed inside the machine room. 26 are defined.

A cooler 66 to which a refrigerant is circulated and supplied from the refrigerating device 28, a cool air circulating device 68, a duct 70, etc. are arranged above the inside of the heat insulating box 18, and the cool air circulating device 68 sends air. The storage chamber 60 defined inside the heat insulating box 18 is cooled by the cool air. Further, in the storage chamber 60, shelf posts 80, shelf receivers 82, shelf nets 84, fluorescent lamps 86 and lamp holders 88 for orderly aligning display items such as foods and beverages and making them more visible from the outside. Etc. are provided. The cool air sent from the cool air circulation device 68 is spread throughout the room through a cool air passage 72 defined by a large number of shelving nets 84 arranged in the storage chamber 60. (See Figure 3).

A rectangular opening 18a that opens forward is formed in the front portion of the heat insulating box 18, and the upper frame 32, the side frames 34, 34 and the lower frame are formed around the inside of the front opening 18a. 36 are provided. Then, the upper frame 32 and the lower frame 36
In addition, the front door 22A and the rear door 22B are slidably supported in the left and right directions, respectively, so that the front opening 18a can be opened and closed. That is, as shown in FIGS. 4 and 5, the lower frame 36 is provided with three rising portions 46a, 46b, 46c on the upper surface of the bottom plate 37 thereof so as to be spaced apart from each other in the front-rear direction so that each of them extends in the longitudinal direction. It extends in parallel. Also,
A front groove 40A is defined between the front rising portion 46a and the middle rising portion 46b, and a rear groove 40B is defined between the middle rising portion 46b and the rear rising portion 46c.
A rail 42 is provided in each of the grooves 40A and 40B, and the doors 22A and 22B are slidably supported by the rails 42 via rollers 44 provided below the doors 22A and 22B, respectively. In addition, each rising part 46a, 46b, 4
6c has a function of restricting the front-rear movement of the front and rear doors 22A and 22B whose lower portions are accommodated in the front and rear grooves 40A and 40B and sliding the doors 22A and 22B stably.

Here, as shown in FIG. 4, the lower frame 36 disposed in the lower inner periphery of the front opening 18a has a bottom plate 37 lower than the inner bottom 60a of the storage chamber 60 and a front rising portion 46a. The upper end of the front rising part 46a is set to face the high position, and the upper end of the front rising part 46a is set to the rear rising part 46c.
It is set to be slightly higher than the upper end of. The rail 42 may be formed separately from the lower frame 36 or may be formed integrally with the lower frame 36.

The front rising portion 46a of the lower frame 36, which faces the front side of the front door 22A, has a larger thickness than the other rising portions 46b and 46c, as clearly shown in FIG. It is configured so that the heat insulating property of the front rising portion 46a can be sufficiently obtained even at the time of cooling. Further, the front rising portion 46a has a hollow portion 49 extending in the longitudinal direction, and both longitudinal ends of the hollow portion 49 are sealed by left and right side frames 34, 34, and an air layer enclosed therein. Thus, the heat insulating property of the front rising portion 46a is further enhanced. In addition, front rising part 4
6a is preferably made of synthetic resin or the like having a low thermal conductivity.

An inclined portion 51 is formed at the upper end of the front rising portion 46a and is inclined downward in an arc shape from the rear surface side to the front surface side. Even if dew condensation occurs on the surface of the rising portion 46a, dew condensation water is formed. Is configured so as to quickly flow down on the front surface side through the inclined portion 51, prevent the condensed water from collecting at the upper end, and keep it always hygienic. Further, at the front end of the bottom plate 37 of the lower frame 36, a hanging portion 47 is formed which hangs smoothly with the front surface of the front rising portion 46a, and the hanging portion 47 is formed on the lower front surface 1 of the heat insulating box body 18.
By contacting 8b, the lower frame 36 is positioned in the heat insulating box body 18. The lower end of the hanging portion 47 is formed with an inclined portion 52 that inclines in an arc shape from the front surface side toward the rear surface side as it goes downward.
Condensed water flowing down the front surface of 6a and the hanging part 47 is inclined 52
It is configured to prevent the dew condensation water from directly dripping on the floor surface where the showcase 10 is installed by being transmitted to the lower front surface 18b via the.

The lower front surface 18b of the heat insulating box 18
Is set so as to face the rear side of the front surface of the front panel 64 disposed on the front surface of the chassis 20, and the dew condensation water flowing down the lower front surface 18b drips onto the upper surface portion 64a of the front panel 64. ing. Further, as shown in FIG. 4, an exhaust space 58 is provided between the lower front surface 18b and the front panel 64, in which hot air generated by operating the refrigeration system 28 of the machine room 26 is discharged. The condensed water dropped on the upper surface portion 64a of the front panel 64 is evaporated by warm air.

As shown in FIGS. 4 and 5, the lower frame 36 is
The bottom plate 37 is provided with a drain port 90 on the rear groove 40B side, and the drain port 90 communicates with a drain pan 96 arranged in the machine chamber 26 via a drain pipe 92 and a drain hose 94. In addition, the upright portion 4 of the lower frame 36
As shown in FIG. 6, notches 56 communicating with the front and rear grooves 40A, 40B are formed at a plurality of positions in the longitudinal direction on 6b, and notches 57 communicating with the rails 42 in the front-rear direction are also formed in the longitudinal direction. It is formed at a plurality of positions in the direction. That is, condensation is formed on the front surfaces of the front door 22A and the rear door 22B,
The condensed water dropped in both grooves 40A, 40B of the lower frame 36 is guided to the drainage port 90 via the notches 56, 57 and discharged to the drain pan 96. The cutouts 56, 5
7 instead of the through hole 54 to the neutral rising portion 46b and the rail 4
2 (only the neutral rising portion 46b side is shown) may be bored, and the condensed water may be guided to the drain port 90 through the through hole 54. Further, the notches 56 and 57 and the through hole 54 may be used together.

[0017]

Next, the operation of the lower frame structure of the showcase according to the embodiment will be described. When the cooling operation of the showcase 10 is started, the storage chamber 60 is cooled by the refrigerating device 28, the cooler 66, the cool air circulating device 68 and the like. When the outside (front side) of the front and rear doors 22A and 22B is below the dew point temperature due to the conditions such as the temperature difference between the outside air temperature and the inside temperature and the outside humidity, dew condensation starts and occurs on the front surface of the doors 22A and 22B. Condensed water flows down and the grooves 40 in front of and behind the lower frame 36
A, 40B is dripped. The joint between the lower frame 36 and the side frames 34, 34 is subjected to a caulking process, and the condensed water is collected without leaking from the grooves 40A, 40B.

Since the notched portions 56 and 57 are formed in the neutral rising portion 46b and the rail 42 of the lower frame 36, the dew condensation water accumulated in the grooves 40A and 40B can be collected in the rear groove 40B.
It is discharged from the drain port 90 provided in the. The condensed water is collected in the drain pan 96 via the drain pipe 92 and the drain hose 94.

When the temperature inside the refrigerator further decreases with the passage of time, the front rising portion 46a exposed to the outside in the lower frame 36 that supports the doors 22A and 22B is conventionally used.
Condensation will also occur. However, in the lower frame 36 of the embodiment, since the front rising portion 46a is set to have a sufficient thickness and has a high heat insulating property, the occurrence of dew condensation can be suppressed. Moreover, the front rising part 4
Since 6a is provided with a hollow portion 49 which is closed by the left and right side frames 34, 34 and has an air layer, the occurrence of dew condensation is surely suppressed in combination with the heat insulating effect of the hollow portion 49.

As described above, under normal use conditions, the occurrence of dew condensation on the front rising portion 46a of the lower frame 36 can be surely suppressed, but various use conditions are conceivable for the showcase 10, and sometimes even more. It is also conceivable that dew may condense on the front rising portion 46a due to use under severe conditions. However, even in such a case, the front rising portion 46 is
Since the inclined portion 51 is formed at the upper end of a, the dew condensation water generated on the surface thereof quickly flows down on the front surface side, and the dew condensation water does not collect at the upper end. Further, the front surface of the front rising portion 46a and the front surface of the hanging portion 47 are smoothly connected, and the lower end of the hanging portion 47 is formed with an inclined portion 52 which is inclined toward the lower front surface 18b of the heat insulating box body 18. Therefore, the condensed water flowing down the front surface of the front rising portion 46a is
It is transmitted to the front surface of the hanging portion 47 or the lower front surface 18b. That is, in the lower frame 36 of the embodiment, the front rising portion 46a
Even if the dew condensation occurs, the dew condensation water does not collect on the upper end of the front rising portion 46a or the connecting portion with the hanging portion 47, so that a good-looking appearance can always be obtained and it can be kept hygienic. Further, it is possible to prevent the dew condensation water from dripping from the lower end of the hanging part 47 onto the installation floor surface to wet the floor surface.

The dew condensation water transmitted to the lower front surface 18b of the heat insulating box 18 is the upper surface portion 64 of the front panel 64.
Although it drips on a, warm air in the machine room 26 is discharged to the upper surface portion 64a through the exhaust space 58,
The dew condensation water dropped on the upper surface portion 64a does not evaporate due to the exhaust hot air and remains in the water for a long time, so that the appearance can be improved and the sanitary condition can be maintained.

Since the rear rising portion 46c rises above the inner bottom portion 60a of the storage chamber 60, it is possible to prevent the display items such as beer bottles placed on the inner bottom portion 60a from falling. it can. Further, since the bottom plate 37 of the lower frame 36 is set to be lower than the inner bottom portion 60a, the inner bottom portion 6 can be formed without thinning the heat insulating material 16 on the bottom portion side.
The entire display item placed on 0a can be seen well without being obstructed by the lower frame 36. Further, the rear rising portion 46c rising above the inner bottom portion 60a can prevent the cool air in the storage chamber 60 from leaking to the outside.

[0023]

Other Embodiments FIGS. 7 and 8 show another embodiment of the lower frame, and since the basic structure is the same as that of the above-mentioned embodiment, only different parts will be described. In the lower frame 36 shown in FIG. 7, the front rising portion 46a is set to have a solid thickness and a sufficient heat insulating property. Therefore, during the cooling operation of the showcase 10, it is possible to suppress the occurrence of dew condensation on the front rising portion 46a of the lower frame 36.

The lower frame 36 shown in FIG. 8 has a front rising portion 46.
The thickness a is solid and has a sufficient heat insulating property, and an inclined portion 74 is formed on the rear surface side of the rising portion 46a so as to incline downward from the front surface side toward the rear surface side. That is, in the lower frame 36 shown in FIG. 8, it is possible to suppress the occurrence of dew condensation at the front rising portion 46a of the lower frame 36 during the cooling operation of the showcase 10 and to cause it near the upper end of the front rising portion 46a. The condensed water is collected in the front groove 40A via the inclined portion 74 to collect the drainage 90.
Can be discharged from. In addition, in another embodiment of FIG. 8, a hollow portion may be provided in the front rising portion 46a.

[0025]

As described above, according to the lower frame structure of the showcase of the present invention, it is formed on the front side of the lower frame.
Before the rising portion, which are set to a sufficient thickness with a heat insulating property, it is possible to suppress the formation of condensation in the rising section before said. Further, by forming the hollow portion in the front rising portion, a further heat insulating effect can be expected, and the occurrence of dew condensation can be surely suppressed. Furthermore, by forming an inclined part at the upper end of the front rising part or the lower end of the hanging part, the dew condensation water that has condensed on the front rising part will flow down for a long time without collecting, and it will be possible to improve the appearance and sanitarily. Can be kept.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a showcase adopting a lower frame structure according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the showcase of the embodiment.

FIG. 3 is a cross-sectional plan view of the showcase of the embodiment.

FIG. 4 is a side view showing a main part of the showcase of the embodiment in a vertical section.

FIG. 5 is a side view showing a lower frame of the embodiment with a part thereof cut away.

FIG. 6 is a perspective view of a main part showing a lower frame of the embodiment.

FIG. 7 is a side view showing a lower frame according to another embodiment with a part thereof cut away.

FIG. 8 is a side view showing a lower frame according to still another embodiment with a part thereof cut away.

FIG. 9 is a side view showing a longitudinal section of a main part of a showcase adopting a lower frame structure according to a conventional technique.

FIG. 10 is a side view of a lower frame according to a conventional technique.

[Explanation of symbols]

12 interior plate, 14 exterior plate, 16 foam insulation, 18 insulation box 18a front opening, 22A front door, 32 upper frame, 34 side frame, 36 lower frame 40A front groove, 46a front rising part, 47 hanging part ，
49 hollow part 51 inclined part, 52 inclined part

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigetoki Ishiguro 3-16, Hoshizaki Electric Co., Ltd., South Building, Sakaemachi, Toyoake City, Aichi Prefecture (56) References: Kaihei 7-16661 (JP, U) 59-88687 (JP, U) Actual Kaihei 2-57355 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 21/04

Claims (4)

(57) [Claims] 1. A heat insulating material between the inner plate (12) and the outer plate (14).
An opening (18a) that opens to the front is opened in the heat-insulating box body (18) filled with (16), and the opening (18a) is opened and closed at the lower inner periphery of the front opening (18a). A lower frame (36) on which the front and rear doors (22A, 22B) are slidably supported is disposed, and the lower frame (36)
Has three rising portions (46a, 46b, 46c) standing on the bottom plate (37) thereof in the front-rear direction, and between the front rising portion (46a) and the middle rising portion (46b), A front groove (40A) for accommodating a lower portion of the front door (22A) is defined, and a neutral rising portion (46A) is formed.
In a showcase in which a rear groove (40B) that accommodates a lower portion of the rear door (22B) is defined between the b) and the rear rising portion (46c), a front door (in the lower frame (36) ( The front rising part (46a) facing the front side of (22A) has a larger thickness dimension than the other rising parts (46b, 46c) and is set to have a sufficient heat insulating property. Lower frame structure. 2. A heat insulating material between the inner plate (12) and the outer plate (14).
An opening (18a) that opens to the front is opened in the heat-insulating box body (18) filled with (16), and the opening (18a) is opened and closed at the lower inner periphery of the front opening (18a). The front and rear doors (22A, 22B) are slid
A lower frame (36) that is supported so that it can be freely placed is disposed, and the lower frame (36)
On the bottom plate (37) of the
The rising parts (46a, 46b, 46c) are erected, and the front rising part (46a) and the middle
Housing the lower part of the front door (22A) between the rising part (46b)
The front groove (40A) is defined and the neutral rising portion (46A)
The lower part of the rear door (22B) is located between b) and the rear rising part (46c).
In a showcase in which a rear groove (40B) for accommodating is formed, in the front side of the front door (22A) formed on the front side of the lower frame (36).
Rising unit before being exposed to the outside faces (46a), the other
The thickness dimension is larger than the rising portions (46b, 46c), and the thickness is set to have sufficient heat insulation and the hollow portion (49)
The bottom frame structure of the showcase, which is characterized by having. 3. The lower frame structure for a showcase according to claim 1, wherein an inclined portion (51) is formed at an upper end of the front rising portion (46a). 4. A drooping part (47) is formed at the lower part of the front side of the lower frame (36) so as to hang smoothly with the front surface of the front rising part (46a), and the lower end of this drooping part (47). The lower frame structure of the showcase according to any one of claims 1 to 3, wherein an inclined portion (52) that is inclined from the front surface side toward the rear surface side is formed on the bottom.