KR100191048B1 - Refrigeration showcase - Google Patents

Abstract

It is an object of the present invention to provide a cooling showcase capable of reducing defects in a machine room. As a means for solving this, the cooling showcase 1 comprises a heat insulating housing 8, 9, 10 provided with a storage chamber 16, a machine room 3 disposed below the heat insulating housing itself, A unit base portion 53 having a condenser 4 and a compressor 6 mounted thereon in a movable manner, and an electric box 7 attached to a surface of the heat insulating casing itself on the machine room side.

Description

Cooling Showcase

The present invention relates to a cooling showcase such as a refrigeration showcase or a refrigeration showcase in which a machine room is provided below a storage room.

Conventionally, in this type of cooling showcase, a machine room is provided below the storage room, in which a condenser, a blower for a condenser, a compressor or an electric box is installed. The condenser and the compressor together with the cooler for cooling the storage compartment constitute a refrigeration cycle.

When the refrigeration cycle is being operated, the compressor is rotationally driven to generate vibration. These vibrations adversely affect electrical components in the electric box. In addition, since the condenser becomes a high temperature, fresh air is blown from the outside through the air filter in the blower for the condenser to air-cool the condenser, and the air after cooling is exhausted to the outside of the machine room. Therefore, it is necessary to clean and replace the air filter. In addition, dust and dust that can not be removed by the air filter penetrate into the machine room, and therefore it is necessary to repair and check the condenser, the compressor, and the like. In addition, an exhaust duct or the like is required to exhaust the heat of the condenser to the outside of the machine room.

It is an object of the present invention to provide a cooling showcase capable of reducing defects in a machine room. In particular, the present invention is directed to a cooling showcase for protecting electrical equipment from vibration, cleaning air filters, And simplifying the heat discharge process.

1 is a perspective view of a cooling showcase according to the present invention;

Fig. 2 is a longitudinal sectional view of Fig. 1, taken along line II-II in Fig. 3; Fig.

3 is a cross-sectional view taken along the line III-III in Fig. 2; Fig.

4 is a cross-sectional view of the unit base taken out.

5 is an exploded perspective view of the electric box;

Fig. 6 is an explanatory view for explaining the attaching / detaching operation of the air filter, wherein (a) is a perspective view of a showcase, and (b) is an enlarged view of a connecting portion of a front panel.

7 is a perspective view of a cooling showcase when the front panel is in a fully opened state;

8 is an explanatory view for explaining an air flow in a blower for a condenser;

DESCRIPTION OF THE REFERENCE NUMERALS

1: Showcase (low temperature showcase) 3: Machine room

3a: first front panel (first panel) 3b: second front panel (second panel)

4: condenser 5: blower for condenser

6: compressor 7: electric box

8: top wall (of the thermal insulation panel) 9: side wall (of the thermal insulation panel)

10: bottom wall 16 (of insulation panel) 16: showroom (storage room)

53: Unit base 57c:

57d: nip plate 58: full length box fixing portion (fixing means)

61b: attachment plate 63: engaging portion (fixing means)

68: Air filter 69: Chain (connecting member)

In order to achieve the above object, the cooling showcase (1) of the present invention comprises a heat insulating housing (8, 9, 10) having a storage room (16) therein and a machine room A unit base portion 53 which is movably arranged in the machine room and on which the condenser 4 and the compressor 6 are mounted and an electric box 7 which is attached to the surface of the heat insulating body itself on the machine room side Respectively.

Further, the electric field box is attached with a gap to the heat insulating frame itself, and there is also a space between the electric box and the unit base.

Further, a guide surface for attaching an electric box is provided in the machine room, and an attachment plate 61b guided from one end to the other end of the guide surface is provided in the electric box. Then, the nail surface is disposed opposite to the other end of the guide surface, and the gap between the nail surface and the guide surface becomes smaller toward the other end of the guide surface. On the other hand, fixing means (58, 63) for fixing the electric box is provided at one end of the guide surface.

A lower portion of the front panel 3b is rotatably attached, and a connecting member 69 for supporting the front panel in a semi-opened state is also provided. The connection member has a connection releasing portion for releasing the connection.

In addition, the front and rear sides of the storage room are provided with openings for storing and retrieving goods, and the first panel (3a) is arranged on the front side and the second panel (3b) is arranged on the rear side in the machine room arranged below the storage room And the condenser blower 5 may be switched between forward operation for flowing air from the second panel to the first panel and reverse operation for flowing air from the first panel to the second panel.

Next, an embodiment of a cooling showcase according to the present invention will be described with reference to Figs. 1 to 8. Fig. 1 is a perspective view of a cooling showcase according to the present invention. Fig. 2 is a longitudinal sectional view taken along line II-II in Fig. 3, and Fig. 3 is a cross-sectional view taken along the line III-III in FIG. 4 is a cross-sectional view of the unit base taken out. 5 is an assembled exploded perspective view of the electric box. Fig. 6 is an explanatory view for explaining the attaching / detaching operation of the air filter, wherein (a) is a perspective view of a showcase, and (b) is an enlarged view of a main portion of a connecting portion of the front panel. 7 is a perspective view of the cooling showcase in a state in which the front panel is fully opened. 8 is an explanatory view for explaining the air flow in the blower for the condenser.

First, an outline of a cooling showcase will be described. A machine room 3 is disposed below a refrigerated or frozen open showcase 1 as a cooling showcase for displaying various kinds of commodities such as soft drinks, lunch boxes, ham, fruits, and the like. The machine room 3 is provided with a condenser 4, a blower 5 for a condenser, a compressor 6 and an electric box 7. The first front panel 3a is provided on the front surface thereof, A panel 3b is provided. Ventilation openings are formed in the front panels 3a and 3b to form a ventilation panel. Further, a vent is formed in the side plate 3c of the machine room 3. [

The upper wall 8, the right side wall 9 and the lower wall 10, which is a partition wall of the machine room 3, constitute an adiabatic shape in which three side faces are opened, For example, a heat insulating material 11 such as rigid foamed polyurethane.

An inner ceiling plate 12, a high-endwall plate 13, and a high-level bottom plate 14, which are made of a metal plate or the like having a suitable gap from the inner surface of the heat insulating material 11 and free from rust, A side plate 15 made of a transparent double glass plate is disposed on the left side of the showcase 1. A product storage and retrieval opening 17 is formed on the front and rear surfaces of the display chamber 16 as a storage chamber surrounded by the internal ceiling plate 12, the internal wall plate 13, the internal bottom plate 14 and the side plate 15 have. In this display chamber 16, a pair of pillars 18 are vertically provided. A transparent main partitioning plate 19 is disposed between the pillars 18 and a transparent auxiliary partitioning plate 20 is disposed on the right side of the left support 18. The partitioning plates 19, Is equally divided into a front display room 16a and an inner display room 16b. The merchandise display shelf 21 is supported by a pair of left and right support brackets 22 and arranged in multiple stages in the front display room 16a and the inside display room 16b.

The space between the interior bottom plate 14 and the bottom wall 10 is a cooling chamber 23 which is covered by a heat insulating wall 24 having a low height around three directions of the cooling chamber 23, The side wall 9 described above is closed. A pair of front and rear cooler blowers 25 are disposed on the right side of the cooling chamber 23 and ducts 26 and 27 in the upper and lower two stages extend to the right side of the blower 25 toward the right end , And a first cooler (28) is disposed in the upper side duct (26). An upper cover member 31 is disposed on the upper side of the upper side duct 26 and a lower cover 32 is disposed between the upper side duct 26 and the lower side duct 27. The upper cover member 31 and the lower cover member 32 are each inclined from the upper right side to the lower left side.

A vertical duct 36 is formed between the inner wall plate 13 and the side wall 9 and a second cooler 37 is disposed in the vertical duct 36. The second cooler 37 is configured to communicate with the lower side duct 27 so that the air from the lower side duct 27 flows into the second cooler 37. On the other hand, the upper side duct 26 communicates with the space around the second cooler 37, so that the air from the upper side duct 26 flows upwardly around the second cooler 37. In other words, the front and rear side surfaces of the second cooler 37 are a tube plate, the left side surface is closed by a left cover member (not shown), and the right side surface is closed by the side wall 9. The air flow in the second cooler 37 and the air flow around the second cooler 37 are then joined at the top of the vertical duct 36.

A ceiling horizontal duct 41 is formed between the inner ceiling plate 12 and the upper wall 8 and the right end portion of the ceiling horizontal duct 41 is in communication with the vertical duct 36.

The above-described coolers 28 and 37 constitute a refrigeration cycle by a condenser 4 or a compressor 6 disposed in the machine room 3. When the refrigeration cycle is activated, the condenser 4 becomes high temperature, 28, and 37 become low temperature. Then, when the blower 5 for condenser is rotated, the outside air is sucked from the second front panel 3b of the machine room 3 and the condenser 4 is air-cooled. At this time, the heated air is exhausted from the first front panel 3a and the side plate 3c of the machine room 3 to the outside.

On the other hand, when the cooler blower 25 is driven, air flows into the upper side duct 26 and the lower side duct 27. The air introduced into the upper side duct 26 is cooled in the first cooler 28 and the air introduced into the lower side duct 27 is cooled in the second cooler 37 to become cool air. These cold air joins at the upper portion of the vertical duct 36 and flows into the ceiling horizontal duct 41. The cold air of the ceiling horizontal duct 41 is discharged from the discharge port 44 which is elongated in the left and right direction at the front end and the rear end of the ceiling portion of the showcase 1 and is supplied to the goods receiving / (46). A suction port 48 is formed elongated in the left and right direction on the side of the opening for receiving and inserting the product 17 of the interior bottom plate 14. Cool air formed with the air curtain 46 is cooled Flows into the chamber 23 and returns to the blower 25. By doing so, the air is forcedly circulated to cool the showroom 16.

Next, the structure of the machine room 3 main body will be described.

3 and 4, the foundation stand 51 of the main body 3 of the machine room 3 is fixed to a place where the showcase 1 is installed. The lower ends of the front panels 3a and 3b are attached to the base 51 so as to be rotatable about the hinge axis. When the machine room 3 is closed, the front panels 3a and 3b are arranged substantially vertically.

In addition, the movable base unit 53 is mounted on the base 51 and can be slid and drawn out of the machine room 3 as shown in Fig. A condenser 4, a blower 5 for a condenser, a compressor 6, and the like are mounted on the unit base 53. The compressor 6 is connected to the coolers 28 and 37 via a flexible pipe 55 made of a forced overhead pipe and a refrigerant pipe embedded in the bottom wall 10 so that the compressor 6 is in the state of FIG. To the state of FIG. 4, the flexible tube 55 is deformed. Likewise, a second flexible pipe (not shown) is connected to the condenser 4 so that the second flexible pipe is deformed when the condenser 4 moves.

Next, the attachment structure of the electric field box 7 will be described.

3 and 5, the support member 57 formed of sheet metal or the like includes a substantially horizontal attachment portion 57a, a vertical downward plate 57b extending substantially vertically downward from the end of the attachment portion 57a, A guide plate 57c protruding substantially horizontally from the lower end of the vertical downward plate 57b and a nip plate 57d arranged obliquely to face the guide plate 57c. Each of the support members 57 is composed of a pair of left and right portions and each attachment portion 57a is fixed to the bottom surface of the bottom wall 10, that is, the surface on the machine room 3 side. The nipping plate 57d is fixed to the vertical downward plate 57b by spot welding or the like and the guide face which is the upper face of the guide plate 57c and the nipping face which is the lower face of the nipping plate 47d is moved from the front side to the inside side, . An electric-field box securing portion 58 is provided on the front surface (front-side surface) of the support member 57.

On the other hand, the electric component box 7 is formed by projecting upwardly from the upper end thereof with a pair of left and right attachment members 61. The attaching member 61 includes a substantially horizontal vertical plate 61a and an attachment plate 61b projecting substantially horizontally from the upper end of the vertical plate 61a. And an engaging portion 63 that is screwed to the box fixing portion 58 is provided. The fixing means for fixing the front side portion of the attachment member 61 of the electrical component box 7 is composed of the electrical component box fixing portion 58, the engaging portion 63, and a screw as fixing means.

The attachment plate 61b of the thus constructed attachment member 61 is mounted on the guide surface of the guide plate 57c of the support member 57 from the front side and the attachment plate 61b is slid inward along the guide surface. Then, the gap between the guide plate 57c and the sandwich plate 57d becomes narrow as described above, so that the upper surface of the attachment plate 61b is pressed downward from the sandwich plate 57d. The inner side of the attachment plate 61b is sandwiched between the guide surface 57c and the sandwich plate 57d by the pressurization. On the other hand, the engaging portion 63 on the front surface of the attaching member 61 is fixed to the electrical box fixing portion 58 with screws which are fixing means. Thus, the electric field box 7 is vertically downwardly attached to the bottom wall 10, and is disposed with a clearance from the bottom wall 10 and the unit base 53.

The electric box 7 constructed as described above is connected to the equipment installed in the unit base 53 such as the condenser 4, the blower 5 for the condenser and the compressor 6 and the like in the machine room 3, The electric wires in the main body 3 are longly wired so as not to be cut when the unit base portion 53 is drawn out. The electric box 7 is also connected to a fluorescent lamp disposed above the showroom 16 by an electric wire wired in the heat insulating material 11. [

Next, the structure of the front panels 3a and 3b will be described.

3, 6, and 7, a guide 66 for attaching an air filter is provided on a surface of the second front panel 3b on the side of the machine room 3, and a guide 66, (68) is detachably inserted and attached. The second front panel 3b is normally fixed by a locking device (not shown) in a substantially vertical closed state shown in Fig. When the air filter 68 is to be cleaned or replaced, the air filter 68 is connected to the showcase 1 by a chain 69, which is a connecting member, in a semi-opened state shown in Fig. When the chain 69 is detached from the hook-shaped catching portion 71 of the second front panel 3b, the connection is released and the front panel 3b is brought into the fully opened state shown in Fig. 7, And becomes horizontal. In this state, the unit base 53 can be taken out to the outside as shown in Fig. Although the first front panel 3a has almost the same structure as the second front panel 3b, the air filter 68 is not usually provided.

8, the blower 5 for the condenser blows air from the second front panel 3b to the first front panel 3a. In this case, however, the first front panel 3a As shown in Fig. There may be a device in which a weak commodity is displayed on the front of the exhaust part such as chocolate or a facility which dislikes heat such as a cold showcase. At this time, the blower 5 for the condenser is reversely rotated so as to be blown from the first front panel 3a to the second front panel 3b as shown by a dotted arrow. The air filter 68 is detached from the second front panel 3b and attached to the first front panel 3a. It is also preferable to attach an air filter to the side plate 3c of the machine room 3. [

As described above, in the embodiment, the electric box 7 is attached to the lower surface of the bottom wall 10, so that the electric wire in the machine room 3 may be cut off when the unit base 53 is taken out. However, the electric wire in the machine room 3 is not embedded in the heat insulating material 11 and can be more easily repaired than the electric wire in the heat insulating material 11. [

In addition, when the electric box 7 is mounted on the unit base 53, it is necessary to provide a margin for the electric wire from the heat insulating material 11. [ This electric wire is connected to a fluorescent lamp or the like on the upper part of the display room 16, and the distance between the electric box 7 and the device is long, and furthermore, the electric wire becomes longer due to margin. In this embodiment, when the electrical box 7 is attached to the bottom wall 10, the distance between the electrical box 7 and the device is small, Which is relatively short compared with the case of the first embodiment.

The guide plate 57c for attaching the electrical component box 7 extends from the front side of the machine room 3 to the inside so that the attachment member 61 of the electrical component box 7 is moved from the front side along the guide plate 57c It can be fixed at a predetermined position only by moving it. Since the engaging portion 63 of the electrical component box 7 is located on the front side, the fixing operation is more convenient than when the engaging portion 63 is located on the inner side.

In addition, a guide 66 is provided on the face of the front panel on the machine room side, and the air filter 68 can be inserted into the guide 66 from above. The air filter 68 can be easily attached.

In addition, a coupling member having a coupling portion is attached to one side of the front panel or the cooling and showcase body, and a coupling portion for coupling the coupling portion is provided on the other side. And the front panel is supported in a semi-opened state by engaging the engaging portion of the connecting member with the engaging portion. Therefore, connection and disconnection operations of the connecting member can be easily performed. Particularly, one of the engaging portion and the engaging portion may be constituted by the pulling engagement portion and the other may be formed by the ring portion or the pulling engagement portion. In addition, when the front panel is half-opened by a chain 69 having a structure in which a plurality of rings are connected, connection and disconnection can be facilitated by the chain 69, and at the same time, have.

In the embodiment, a guide 66, which is an air filter attaching member, is provided on both the first front panel 3a and the second front panel 3b. Therefore, when the air blowing direction is reversed, the air filter 68 is changed from the second front panel 3b to the first front panel 3a to prevent the dust or dust from entering the machine room 3 have.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, but may be modified into various forms within the scope of the present invention described in the claims. Modifications of the present invention include the following.

The lower ends of the front panels 3a and 3b are rotatably and hinged to the ends of the base 51 of the main body 3 of the machine room 3, It may be detachably coupled.

(2) In the embodiment, the nip plate 57d is formed to have substantially the same length as the guide plate 57c, but the nip plate 57d can be formed shorter than the guide plate 57c. In this case, the nip plate 57d is disposed opposite to the inner side portion of the guide plate 57c.

(3) In the embodiment, the coupling portion 63 of the electrical component box fixing portion 58 and the electrical component box 7 is screwed, but other fixing means such as a bolt, a nut or a pin can be employed.

(4) In the embodiment, the connecting member for supporting the front panel in the semi-opened state is constituted by the chain 69, but other connecting means such as a belt or a ring can also be used.

According to the present invention, the condenser and the compressor are mounted on the unit base movably arranged in the machine room, and the electrical box is attached to the side of the mechanical chamber side of the heat insulating shell, so that the vibration of the compressor or the like is reduced from being transmitted to the electrical box . Therefore, electrical parts in the electric box that is weak in vibration can be protected. In addition, when the unit base is taken out, the electric wire connected to the electric field box may be cut, but the electric wire to be cut is wired between the electric box and the unit of the unit base, .

In addition, since the electrical component box has a gap with the heat insulating member and the unit base portion, the air that has cooled the condenser is divided into upper and lower portions of the electrical component box, and the flow of air is prevented from flowing upward or downward. As a result, the upper and lower portions of the condenser can be cooled substantially uniformly.

In addition, the attachment plate of the electrical component box is guided from one end of the guide surface toward the other end, and held between the guide surface at the other end of the guide surface and the holding surface, while the electrical component box is fixed by fixing means at one end side of the guide surface. Therefore, when the electrical component box is attached, the mounting plate of the electrical component box is slid along the guide surface, and then the fixing operation is performed by the fixing means only at one end side of the guide surface. As a result, the attaching operation of the electric box is simplified. Further, the other end portion is sandwiched between the nipping surface and the guide surface, so that the electric field box can be firmly attached without rocking. Therefore, when the cooling showcase produced in the factory is transported to the installation place, the electric box can be prevented from rocking due to vibration during transportation. As a result, it is possible to prevent the electric components in the electric field box from being damaged at the time of transportation.

Further, there is a case where a lower portion of the front panel is rotatably attached, and a connecting member for supporting the front panel in a semi-opened state is provided. In this case, replacement or cleaning of the air filter provided right beside the front panel is performed in a semi-opened state. Therefore, when the front panel is closed after completion of the work, the front panel can be closed simply by pushing it inward without lifting the front panel. As a result, the efficiency of replacement and maintenance work of the air filter and the like is improved. The connection member has a connection releasing portion for releasing the connection, so that when the condenser 4 or the like installed on the inner side of the air filter is checked, the front panel can be completely opened, thereby facilitating the inspection work.

In addition, since the air blower for the condenser flows air from the second front panel on the front and rear surfaces of the machine room to the first front panel, it is not necessary to provide the duct, and the structure can be simplified and the installation space can be reduced. Further, the air blowing direction can be switched between the forward direction and the reverse direction, so that the direction of the exhaust can be changed. Particularly, in the case of this cooling showcase, it is important that the direction of the exhaust gas can be changed back and forth because the opening for taking in and taking out goods is arranged on the front surface and the rear surface, and other products are displayed in a state opposed thereto.

Claims (5)

A heat insulating housing having a storage chamber therein, A machine room disposed below the thermal insulation panel itself, A unit base which is movably disposed in the machine room and on which the condenser and the compressor are mounted, And an electric box attached to the side of the heat insulating sheet itself on the machine room side. The cooling showcase according to claim 1, wherein the electric box is attached with a clearance to the insulating shell, and a space is also present between the electric box and the unit base. 1. A cooling showcase comprising: a heat insulating casing having a storage chamber therein; a machine room disposed below the heat insulating casing; and an electric box disposed in the machine room, Wherein a guide surface for attaching an electric box is provided in the machine room, An attachment plate guided from one end of the guide surface toward the other end is attached to the electric box, Wherein a gripping surface is disposed opposite to the other end of the guide surface and a gap between the gripping surface and the guide surface is reduced toward the other end of the guide surface, And a fixing means for fixing the electric box is provided at one end of the guide surface. A front panel having a heat insulating housing having a storage chamber therein, a machine room disposed below the heat insulating housing, a condenser disposed in the machine room, and an opening for blowing air flowing into the condenser, And a condenser air filter disposed between the condenser and the condenser, A lower portion of the front panel is rotatably attached, Wherein a connection member for supporting the front panel in a semi-opened state is provided, and the connection member has a connection releasing portion for releasing the connection. A storage room having at least front and rear surface openings for storing and retrieving goods, A machine room disposed below the storage chamber, A condenser disposed in the machine room, A first panel disposed on a front surface of the machine room, And a second panel disposed on a rear surface of the machine room, The first panel and the second panel each having an opening for flowing an air flow generated by the blower for the condenser, Wherein the blower for the condenser is switchable between forward operation to flow air from the second panel to the first panel and reverse operation to flow air from the first panel to the second panel.