JPH0445020Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a low-temperature case for storing frozen products and the like.

(Prior Art) Conventionally, as shown in FIG. 4, a sliding door 7 is provided on the upper front side of a case body (not shown), wheels 21 are attached near both ends of the sliding door 7, and the wheels 21 are installed near both ends of the sliding door 7. A low-temperature show case is known that includes a front guide rail 23 on which the casing 21 runs, and a heat insulating cover 24 that engages the front guide rail 23 and covers the upper part of the front wall 1a of the case body 1. In the low-temperature show case, the heater 26 was installed along the back surface of the heat insulating cover 24, and was not in direct contact with the front guide rail 23.

(Problem to be solved by the invention) In the conventional low-temperature case, the heater 2
6 connects to the front guide rail 23 via the heat insulating cover 24
Because the temperature was being heated, the temperature could not be raised sufficiently. For this reason, the surface of the guide rail 23 is frosted,
There was a problem that the wheels 21 attached to the opening/closing sliding door 7 could not be rotated smoothly.

(Objective of the Invention) In consideration of the above-mentioned problems of the conventional art, the present invention provides a low-temperature shovel in which the guide rail surfaces do not frost and the wheels can rotate smoothly.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention includes a sliding door provided on the upper front side of the case body, wheels attached to both front and rear ends of the sliding door, and wheels installed at both front and rear ends of the sliding door. A low-temperature show case comprising front and rear guide rails on which the front guide rails run, and a heat insulating cover attached to the upper end of the front wall of the case body, and the front guide rails are attached to the top of the heat insulating cover. The front guide rail is formed of a thermally conductive material, and a heater is installed in contact with the back surface of the front guide rail in the longitudinal direction, and the heat insulating cover has a water guide portion having a gap between it and the back surface of the guide rail. It is set up.

(Function) According to the low-temperature show case of the present invention, the temperature of the front guide rail made of a thermally conductive material is efficiently raised by the heater in contact with the back surface, so that the surface of the front guide rail is not frosted. Never. In addition, moisture condensed on the back surface of the front guide rail collects in the water guide portion of the heat insulating cover and is drained. At this time, it is also possible to evaporate the moisture accumulated in the water guide section using the heat of the heater. Furthermore, since there is a gap between the water guide section and the back surface of the guide rail, the heater will not be submerged in water.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention, and the same components as those of the conventional example are denoted by the same reference numerals. Namely, 1 is a horizontally long low-temperature case body (hereinafter referred to as the case body) that opens from the top of the front wall 1a to the upper front side, 2 is a machine room provided below the bottom wall 1b of the case body 1, and a condenser 3, A blower 4 for cooling the condenser and a compressor 5 are housed therein. Reference numeral 6 indicates an article mounting table provided on the upper rear side of the case body 1; 7 indicates a sliding door for opening and closing the opening of the case body 1; 8 indicates the case body 1, the machine room 2, and the case body 1; A decorative frame 8 is provided around the article mounting table 6 and the opening/closing sliding door 7 to cover both sides thereof in the longitudinal direction.
This is the side wall of the case body 1 with the case body 1 attached.

The case body 1 is formed of a heat insulating material, and the back wall 1c is a peripheral edge 8 of the side wall 8 on the side of the back wall 1c.
It is installed inside from b. The back side of the machine room 2 is open, and a machine room cover 9 is provided in the opening, which is installed inside the peripheral edge 8b of the side wall 8 of the case body 1 and has a heat exhaust port 9a. The article mounting table 6 has a back side of the top plate 6a curved vertically downward to form a back portion 6b, an air intake port 10 is provided in the back portion 6b, and an air intake port 10 is provided in the upper part of the front plate 6c of the article placing table 6. Air discharge ports 11 are provided respectively. 12 is an upper insulator, and the upper insulator 12 is connected to the top plate 6a.
It is formed so as to spread out in a fan shape as it goes from the side toward the front plate 6c side, and the front plate 6c side is aligned with the lower edge of the air outlet 11, and the upper heat insulating body 12 and the article mounting table are A ventilation passage 13 is provided between the top plate 6a of 6
has been established. Also, the back surface 6b of the ventilation passage 13
A blower 15 for exhaust heat ventilation is installed on the side via a mounting plate 14.
has been established.

Each of the opening/closing sliding doors 7 is made of a single glass plate, and has a horizontal piece 7a extending from the front plate 6c side of the article mounting table 6 to the front of the case body 1 and covering the upper front side opening.
and a vertical piece 7b that curves vertically downward from the tip of the horizontal piece 7a and covers the upper opening of the front wall 1a. A sliding door frame 20 is clamped at one end of the horizontal piece 7a in the longitudinal direction, and two wheels 2 are mounted near both ends of the sliding door frame 20 so as to be rotatable in the vertical direction.
1a is pivotally supported, and the wheel 21a is placed on a rear guide rail 22. A sliding door frame 20 is sandwiched in the longitudinal direction of one end of the vertical piece 7b, and the sliding door frame 20
Two wheels 21b are rotatably supported in the vicinity of both ends thereof in a vertical direction, and the wheels 21b are placed on the front guide rail 23.

25 is a heater, and the rear guide rail 22
It is attached to the back surfaces of the second horizontal piece 22c and the third horizontal piece 22e.

The front guide rail 23 formed of a thermally conductive member includes a first flange 23a and one vertical piece 7b connected to one end of the first flange 23a.
A first U-shaped wheel guide groove 23b for receiving the wheel 21b, a second flange 23c connected to one end of the first wheel guide groove 23b, and a second flange 23c connected to one end of the second flange 23c. and a second U-shaped wheel guide groove 2 for receiving the wheel 21b of the other vertical piece 7b.
3d, and a third flange 23e connected to one end of the second wheel guide groove 23d. The first flange 23a and the third flange 23e are attached to both upper ends of a heat insulating cover 24, which will be described later and has a generally concave cross section, provided on the upper part of the front wall 1a of the case body 1, and are connected to the guide rail 23 and the heat insulating cover. A space is formed between 24. Further, the first and second wheel guide grooves 23b and 23d have a wheel drop groove 23f into which the wheel 21b falls when the vertical piece 7b is closed.
There are two of each.

A heat insulating cover 24 is made of a resin material and covers the upper surface of the front wall 1a of the case body 1. The bottom of the heat insulating cover 24 is formed by a channel-shaped water guide section 24a and an angled wiring passage 24c connected to the water guide section 24a via a partition plate 24b.
The first flange portion 23a of the front guide rail 23 is engaged at point d, and the third flange portion 23e of the guide rail 23 is engaged at the convex portion 24e at the other end of the wiring passage 24c.

26 is a heater, and the front guide rail 2
The first wheel guide groove 23b and the second wheel guide groove 23d of No. 3 are laid in contact with the back surfaces thereof, and
It has an appropriate distance from the water guide portion 24a of the heat insulating cover 24. Lead wire 26 of the heater 26
A is laid from the heater 26, through the partition plate 24b of the water guide section 24a, on the wiring passage 24c, and is guided to the outside through the front wall 1a through the bottom through hole 24f of the wiring passage 24c.

According to this embodiment, the front guide rail 23 formed of a thermally conductive member is heated by the heater 26 disposed in contact with the back surface thereof, so that frost does not form on the front guide rail 23 . Further, moisture condensed on the back surface of the front guide rail 23 is removed from the heat insulating cover 2.
The water collects in the water guide section 24a of No. 4 and is treated as wastewater. At that time, the heater 26
It is also possible to evaporate using the heat of Furthermore, since there is a suitable gap between the water guide portion 24a and the heater 26, the heater 26 will not be submerged in water.
Also, since the lead wire 26a of the heater 26 is installed in the wiring passage 24c separated from the water guide part 24a through the partition plate 24b, water accumulated in the water guide part 24a does not enter the wiring passage 24. do not. Therefore, the lead wire 26a will not be submerged in water, and moisture will not enter the heat insulating material inside the front wall 1c through the bottom through hole 24f provided at the bottom of the wiring passage 24.

(Effects of the invention) As explained above, according to the low-temperature show case of the invention, the temperature of the front guide rail can be raised efficiently, so the surface of the front guide rail is not frosted, and the opening/closing The sliding door wheels can always rotate smoothly. Further, since moisture condensed on the back surface of the front guide rail can be collected in the water guide section provided in the heat insulating cover, drainage treatment can be easily performed. At this time, the moisture accumulated in the water guide section can be evaporated using the heat of the heater, so there is an advantage that there is no need to provide a separate drainage structure. Furthermore, since there is a gap between the water guide portion and the back surface of the guide rail, the heater is not flooded with water, and the life of the heater can be extended.

[Brief explanation of the drawing]

Figures 1 to 3 show the low-temperature show case related to the present invention, and Figure 1 is the same as that shown in Figure 2.
An enlarged sectional view in the direction of the line arrow, FIG. 2 is a front perspective view,
FIG. 3 is an enlarged sectional view of part A indicated by the dashed line in FIG. 1, and FIG. 4 is an enlarged sectional view corresponding to FIG. 3 showing the conventional example. In the figure, 1... Case body, 2... Machine room, 6...
...Article mounting table, 7...Opening/closing sliding door, 8...Side wall, 2
3...Front guide rail, 24...Insulation cover, 2
4a... Water guide section, 24b... Partition plate, 24c...
Wiring passage, 26...heater, 26a...lead wire.

Claims (1)

[Scope of claim for utility model registration] An opening/closing sliding door provided on the upper front side of the case body,
The opening/closing sliding door includes wheels attached to both front and rear ends, front and rear guide rails on which the wheels run, and a heat insulating cover attached to the upper end of the front wall of the case body. In the low-temperature show case to which the front guide rail is attached, the front guide rail is formed of a thermally conductive member, and a heater is installed in contact with the back surface of the front guide rail in the longitudinal direction, and the heat insulating cover A low-temperature show case characterized by having a water guide part having a gap between it and the back surface of the guide rail.