JPH06103140B2 - Low temperature showcase - Google Patents

Description

The present invention relates to an improvement of a dew treatment structure for guiding dew attached to a transparent door of an upper case to a drain pipe or a drain tray of a lower case. .

2. Description of the Related Art Since the inside surface of a transparent door that sees through the inside of the storage is cooled as the inside of the storage is cooled, the outside surface of the storage is also cooled by some heat conduction, and the air inside the storage space Contact may cause condensation on the outer surface of the transparent door. The condensed dew drops gradually move downward along the surface of the transparent door, and finally fall and fall on the installation floor and parts below the transparent door, causing rust on the surface of parts and inducing dirt. Therefore, a showcase is generally provided with a structure for treating this dew. Representative examples of these are Japanese Utility Model Publication No. 58-159483 and Japanese Utility Model Publication No. 62-143175.
There is a gazette. In this publication, the dew adhered to the transparent body in the upper storage room is introduced to the cold air passage in the lower storage room, and in the publication, the dew adhered to the door body is disclosed. It is disclosed that the above is introduced to the cooling chamber.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned technique, a heat insulating drainage member is provided which forms a water conduit for guiding dew attached to the transparent body in the upper storage chamber to the low pressure side of the cool air passage of the upper storage chamber. However, since it is made to lead to the low pressure side of the upper cold air passage, it is cooled by the cold air flowing through the passage to freeze on the inner wall, or adheres as frost to the inlet side of the cooler in this cold air passage,
There was a problem that the time required for the entrance side to block frost was shortened. Further, since the cold air passage of the upper storage chamber communicates with the lower cold air passage by the drain pipe, there is a problem that dew in the upper storage chamber is likely to adhere to the cooler of the lower cold air passage as frost.

On the other hand, in the above-mentioned technique, since the dew is guided to the cooling chamber, there is a problem of promoting the growth of frost in the cooler as described above.

Therefore, the present invention provides a showcase in which dew attached to the transparent door of the upper case is led out to the drain pipe or the drain tray of the lower case without exposing it to cold air.

[Structure of Invention]

Means for Solving the Problems A low temperature showcase according to the present invention comprises an upper case having a first transparent door on the front surface and a sliding second case arranged on the front half of the upper surface.
A transparent door, a dew guide groove that is located on the left and right outer side walls of the second transparent door and is inclined forward and downward, a decorative frame that covers the dew guide groove, and one end connected to the dew guide groove and the other end. A lower case with a drain pipe that extends to the drain tray, and a second transparent door that is located between the upper and lower cases and that houses a lighting room with an illumination lamp in front of it. And a light-transmitting shade that receives the dew adhering to the first transparent door at its inner surface and guides it through the groove to the dew guide groove.

Operation The dew adhering to the first transparent door of the upper case is received by the inner surface of the shade and is guided through the groove to the dew guide groove located on the upper side wall of the lower case, so the shade transmits the light of the illumination lamp. In addition to the above, the dew guide groove and the decorative frame act to cover the guided dew and shield it from the cool air in the lower case, and the dew attached to the first transparent door is directly exposed to the cool air in the lower case. It will not be frosted and will not become ice and adhere to the lower case.

Further, since this shade is arranged in the front part of the illumination room having the illumination lamp, the inner surface of the shade is constantly heated by the illumination lamp while the illumination lamp is turned on, and the dew introduced into this shade is guided. It acts to evaporate and reduce the amount of dew.

Embodiments Embodiments of the present invention will be described below with reference to FIGS. 1 to 6.

Reference numeral 1 denotes an upper case 4 composed of a heat insulating wall 3 having an opening 2 for storing and taking out products on the front surface, and a lower part composed of a heat insulating wall 6 having an opening 5 for storing and taking out products on the upper surface. This is a so-called dual type low temperature showcase in which the main body 1A is configured by the case 7.

The upper case 4 is provided with two first transparent doors 11 with a handle 11A pivotally supported by a pair of upper and lower hinges 10 and rotatably closing the opening 2 on the front surface of the heat insulating wall 3. Three
Partition plate 12 and bottom plate made of metal with an appropriate distance from the inner surface of the refrigerator
A plurality of shelves 14 provided with 13 and a fluorescent lamp 15 as a lighting device
A storage chamber (used for refrigeration maintained at a temperature of 0 ° C. or lower in this example) 16, a partition plate 12, a bottom plate 13 and a heat insulating wall 3 provided with a Blate fin type cooler 17 and a blower 18. The cooling air passage 19 formed by the above and the blower outlet 20 and the suction inlet 21 are formed so as to face each other along both upper and lower edges of the inside of the opening 2.

Further, inclined walls 22 are formed at the ends of both sides of the heat insulating wall 3 on the opening side of the left and right walls so as to be inclined in a direction of narrowing the opening width and both ends in the width direction of the air curtain are in contact with the inner surface thereof. In this example, the transparent window is inclined inward toward the front so that the width of the opening of the upper case 4 is smaller than the space between the left and right walls of the heat insulating wall 3 (because it projects more than the heat insulating wall 3). (Sometimes referred to as bay windows) 22 are arranged on each of the left and right sides. Furthermore, the outlet 20 is arranged and formed so that the width of the outlet 20 (width in the horizontal direction) is larger than the width of the opening 2 (width in the horizontal direction).

Then, the air that has undergone heat exchange in the cooler 17 (this is called cold air) is forcedly circulated by the blower device 18 as indicated by the thick arrow in FIG.
A cool airflow, that is, an air curtain, flowing along the back surface of the transparent door 11 is formed to cool the storage chamber 16. At this time, both ends in the width direction of the air curtain are in contact with the inner surface of the transparent window 22 as an inclined wall.
As the transparent window 22, a layered transparent plate is used in consideration of its heat insulating property.

The lower case 7 has a top wall 6A in the rear half of the opening 5 of the heat insulation wall 6, and a second transparent door as two left and right sliding doors slanted forward and backward in the front half so as to be slidable forward and backward. Door 30, heat insulation wall 6
The handrail 80 described below is provided as a handrail part made of metal such as stainless steel that decorates the front, left, and right sides of the opening 5 of
A pipe-on-sheet type cooler 33, which is a meandering low-temperature refrigerant pipe as a main cooler and is provided on the outer peripheral surface of an inner box 32 which is an inner wall of the heat insulating wall 6, and a roll-bonding method which is provided below the ceiling wall 6A. The cold air that has been heat-exchanged with the formed roll bond type cooler 34 as an auxiliary cooler is naturally convected to cool the inside of the freezing compartment 35.

Reference numeral 40 denotes a machine room formed in the lower part of the heat insulating wall 6, which comprises a Bret fin type cooler 17 of the upper case 4, a first compressor 41 and a first condenser 42 which constitute a refrigeration cycle, and a main case of the lower case. A second compressor and a second condenser that form a refrigeration cycle with the auxiliary both coolers 33 and 34 (both are the first compressor and the second compressor, respectively).
41 and condenser 42, which are not shown because they are hidden by condenser 42, respectively.

The reference numeral 25 denotes a door storage portion that is formed between the bottom wall 3E of the upper case and the top wall 6A of the lower case and has the lighting chamber 26 at one corner (front portion) thereof. 2 transparent door 30
To store.

The lighting room 26 is provided with a fluorescent lamp 27 as a lighting device for illuminating the inside of the lower case 7, and a shade 55 made of a translucent material, which will be described later, is arranged in the front part thereof. Further, the lighting chamber 26 is formed in the left-right direction below the front portion of the bottom wall 3E of the heat insulating wall 3 and is a fluorescent lamp 51 that is detachably attached to the clip 50.
And, the front end 55A is locked in the locking groove 52A of the dew receiving horizontal bar 52 which is arranged immediately below the first transparent door 11 and which fixes the hinge 10.
The rear end 55B is locked to the fixing piece 54B of the fixing member 54 to which the clip 50 is fixed, and the groove 55C is formed so as to be located below the rear end 55B in the middle thereof, which is flexible and transparent. A shade 55 made of synthetic resin is provided.
The left and right ends 55D of the shade 55 have dew guide grooves 66, which will be described later.
The lower surface of the groove 55C is supported by the support member 57 disposed on the shade 55. The shade 55 is formed from the first transparent door 11 through the dew receiving crosspiece 52.
The dew guided to the inner surface is discharged to the dew guide groove 66 via the support member 57. If the support member 57 is made of, for example, a water absorbent foam, the shade 55
It is possible to reliably prevent dew from being transmitted from the inner surface left and right end portions 55D of the shade 55 along the outer surface of the shade 55.
It is possible to prevent dew from falling onto the second transparent door 30 from D.

However, it is desirable that the fixing piece 54B also has flexibility. The shade 55 is fixed by utilizing the flexibility of both the fixing piece 54B and the shade 55, so that between the shade upper end 55A and the locking groove 52A and the shade rear end 55B.
A slight gap is formed between each of these and the fixed piece 54B, and air can flow in this gap.

Here, the outside air taken into the machine room 40 is heat-exchanged in the condenser 42 or takes heat of the compressor,
It is heated and blown to the side of the drain port 45 (it has a temperature of around 40 ° C as described later and is called warm air below). Most of the warm air is discharged from the drain port 45, but the rear portion of the machine room 40 communicates with the space 29 formed by the heat insulating wall 6 and the rear cover 43, and the lower end of the rear cover 43 is exposed to the warm air. For,
A part of this warm air is introduced into the space 29, passes through the door storage portion 25, passes through the illumination room 26 or the periphery of the illumination room, and is discharged to the outside. The warm air that exits the machine room 40 is normally when the outside temperature is 30 ° C.
Since it has been heated to about 40 ° C., the dew drops generated in the first drain pipe 28 and the door storage portion 25 are gradually vaporized and transported to the front portion of the door storage portion. When the fluorescent lamp is lit, the temperature inside the lighting room is higher than the temperature of the warm air that is guided when it is discharged to the outside through the lighting room or around the lighting room. The interior of the lighting room is heated when it is cooled and turned off.

Reference numeral 38 is a breaker that is disposed over the upper ends of both the inner and outer boxes 32 and 36 of the lower case 7, and is composed of a first frame 38A configured to be united into three sections and a front end of the projecting wall. And a second frame body 38B disposed in the. Further, the first frame 38A includes a left frame portion (not shown) and a right frame portion 60 that correspond to the left and right walls of the box body, and a front frame portion 61 that corresponds to the front wall of the box body.
Since the left and right frame portions are symmetrically configured such that they face each other, the right frame portion 60 and the front frame portion 61 will be briefly described.

The right frame portion 60 has an inclined portion 62 that is inclined upward toward the rear.
And a dew receiving portion 63 which is formed in the front part of the inclined portion 62 and collects the dew transmitted through the inclined portion and has an opening formed in the lower surface,
The dew receiving portion 63 is partitioned and has a connecting portion (not shown) formed so as to project from the inclined portion 62 so as to connect with the front frame portion 61. Further, the inclined portion 62 has a rail receiver 65 for holding a rail 71 described later formed on the inner side of the upper surface, and a frame body 93 and a water conduit tube described later from the transparent window 22 on the outer side of the upper surface.
A dew guide groove 66 for guiding dew drops guided through 91 and the shade 55 to the dew receiving portion 63 is formed, and an insert piece 67 for inserting the upper end of the inner box is formed inside the lower surface.

Further, the rail 71 is provided with a mounting portion 72 for slidably mounting the second transparent door 30 and a regulating portion 73 for regulating lateral displacement of the second transparent door 30.

Reference numeral 80 covers the dew guide grooves 66 of both the left and right frame portions 60 and presses and fixes the left and right rails 71, for example, a northern decorative frame made of a metal having excellent corrosion resistance such as stainless steel (hereinafter referred to as a hand rail).
Is.

Next, a configuration for guiding the dewdrops adhering to the transparent window 22 to the drain tray 44 will be described.

A frame 91 has a dew receiving groove 94 that receives the lower end of the transparent window 22 and receives dew attached to the inner surface or the outer surface of the transparent window 22, and a drain hole 95 formed at an appropriate position of the dew receiving groove 94. This is a water conduit as a water conduit having one end communicating with the drain hole 95 of the body 93 and the other end extending to the dew guide groove 66 and penetrating the bottom wall 3E of the upper case 4. A dew receiving portion 63 is provided at the tip of the dew guide groove 66, and one end of a second drain pipe 92 having the other end extending to the drain tray 44 communicates with the dew receiving portion 63.

With this configuration, the dew that has adhered to the surface of the transparent window 22 is naturally dropped into the dew receiving groove 94 in the frame 93 to form the dew receiving groove.
The dew guided from the drainage hole 95 of 94 to the dew guide groove 66 via the water conduit 91, and guided to the inner surface of the shade 55 from the first transparent door 11 to the inner surface of the shade 55 to the dew guide groove 66. The dew guide groove 66 is led out from the left and right ends 55D of the shade 55 having the lower surface of the groove 55C supported by the arranged support member 57 to the dew guide groove 66 via the support member 57, and the dew receiving portion 63 is formed by the inclination of the dew guide groove 66. Naturally flow down to
It is led to the drain tray 44 via the second drain pipe 92. At this time, since the dew is transported without passing through the cold air passage, that is, without being exposed to the cool air, it does not adhere to the cooler or the like as frost.

However, the upper case 4 is configured such that the front end of the bottom wall of the heat insulating wall 3 projects substantially in the center of the upper surface of the lower case 7, and the rear end of the bottom wall projects rearward more than the back wall of the heat insulating wall 6 of the lower case 7. At the same time, the side walls are configured to communicate with each other.

According to the above configuration, the first transparent door of the upper case 4
The dew adhered to 11 is received by the shade 55, and the lower case 7
Since the dew guide groove 66 and the decorative frame 80 are guided to the dew guide groove 66 located at the upper side wall of the lower case 7, the dew guide groove 66 and the decorative frame 80 are shielded from the cold air that naturally convections the lower case 7. The dew adhered to the first transparent door 11 is prevented from being directly exposed to the cool air of the lower case 7 and is prevented from adhering to the wall surface and the cooler, which are the conveyance path, as ice.

Further, since the shade 55 is arranged in the front part of the illumination room 26 having the illumination light 27, the inner surface thereof is constantly heated by the illumination light 27 while the illumination light is on, and the shade 55 By receiving the dew guided to the inside of the shade 55 on the inner surface of the shade 55, the dew can be evaporated and vaporized by the illumination lamp 26, and the amount of the dew guided to the dew guide groove 66 can be reduced.

On the other hand, the left and right frame members 60 arranged on the upper side walls of the lower case 7
As the dew guide groove 66 on the outer side of the upper surface, and the rail receiver 65 for receiving the lower surface of the rail on the inner side of the upper surface,
Further, since the dew guide groove 66 is covered with the decorative frame 80, it is possible to prevent the dew flowing down the dew guide groove 66 from coming into contact with cooler air more easily, and the left and right frame bodies 60 are insulated from both the inner and outer boxes of the lower case 7. In addition to the function of connecting, a function of receiving a rail and a function of transporting dew can be provided.

〔The invention's effect〕

As described above in detail, according to the present invention, the first upper case
The dew adhering to the transparent door is received by the inner surface of the shade and is guided to the dew guide groove located on the upper side wall of the lower case through the groove portion.Therefore, the dew guide groove and the decorative frame cover the guided dew. It acts to block cold air from the lower case, and prevents dew that has adhered to the first transparent door from being directly exposed to the cool air in the lower case. To prevent.

Further, since this shade is arranged in the front part of the illumination room having the illumination lamp, the inner surface of the shade is constantly heated by the illumination lamp while the illumination lamp is turned on, and the dew introduced into this shade is guided. If the shade is received on the inner surface of the shade, the dew can be evaporated and vaporized by the illumination lamp, and the amount of dew introduced to the dew guide groove can be reduced.

[Brief description of drawings]

Each drawing shows an embodiment of the present invention, FIG. 1 is an enlarged sectional view of part A of FIG. 2, FIG. 2 is a vertical sectional view of a low temperature showcase, and FIG. 3 is a schematic showing a drainage route of the showcase. Part side view, 4th
FIG. 5 is an enlarged view of part B of FIG. 3, FIG. 5 is a sectional view taken along line CC of FIG. 4, and FIG. 6 is a perspective view with a part omitted for explaining the conveyance from the upper case to the dew receiving part of the lower case. It is a department. 1 ... Low temperature showcase, 4 ... Top case, 7 ... Bottom case, 11 ... First transparent door, 22 ... Transparent window, 25 ... Storage section, 26 ... Lighting room, 27 ... Lighting lamp , 30 …… second transparent door, 44 …… drainage tray, 55 …… shade, 66 …… dew guide groove,
80 …… Cosmetic frame, 91 …… Conduit, 92 …… Drain pipe.

Claims (1)

[Claims] 1. An upper case having a first transparent door on a front surface thereof,
A sliding second transparent door disposed in the first half of the upper surface, a dew guide groove that is located on the upper left and right side walls on the left and right outside of the second transparent door, and slopes downward to the front, and covers this dew guide groove. Makeup frame,
And a lower case having a drain pipe having one end connected to the dew guide groove and the other end extending to a drain tray, and the second transparent door that is located between the upper and lower cases and that is in front of the lower case. And a storage portion in which a lighting chamber having an illuminating lamp is disposed, and a groove portion that receives dew attached to the first transparent door on an inner surface and guides the dew to the dew guide groove is provided in a front portion of the lighting chamber. A low-temperature showcase, which is provided with a transparent shade.