JP2000258036A - Device having refrigerating mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve efficient cooling of a condenser disposed in a machine room and to prevent the occurrence of corrosion and leak of an electric accessory due to condensate. SOLUTION: A condenser 30, a cooling fan 31, and a compressor 32, of which a refrigerating mechanism 13 is comprised, are situated in a machine room 15, in the order from the right side to the left side. An electric accessory box 14 is situated on the front side of a fan cover 33 to surround the cooling fan 31. An opening part 36 of the machine room 15 is closed by a front panel 37. A temperature setting knob to operate an electric accessory at an internal part and an operation part for a source switch 37 are situated on the disposing surface of the electric accessory box 14. A shield member 44 is disposed at the rear surface, corresponding to the electric accessory box 14, of the front panel 37. The shield member 44 has a rear surface making contact with the disposing surface of the electric accessory box 14 and surrounds an operation part when the opening part 36 is closed by the front panel 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus provided with a refrigeration mechanism, and more particularly, to a refrigeration system in which a condenser disposed in a machine room can be efficiently cooled by air sucked from the outside. The present invention relates to an apparatus having a mechanism.

[0002]

2. Description of the Related Art In a grocery store or a convenience store,
A refrigerated showcase having a vertically long cabinet, which stores and displays foods and beverages in a refrigerated state, is suitably used. In this refrigerated showcase, a storage room for cooling and storing foods and a machine room are defined in a vertical relationship in a vertically long box-shaped main body (cabinet). Inside the machine room, a refrigeration mechanism consisting of a condenser, a cooling fan, a compressor, etc., and an electrical box containing various electrical components are arranged, and the refrigeration mechanism cools the cooler for cooling the storage room. It is supposed to. As the condenser, a fin-and-tube type is generally used, and forced air cooling of a heat-generating portion such as the condenser and the compressor is performed by operating a cooling fan disposed between the condenser and the compressor.

In a refrigerated showcase provided with the above-described air-cooled condenser, a side panel covering the side of the machine room is generally provided with a side panel.
A plurality of air inlets are provided at a position facing the condenser, and outlets are provided at opposite side panels and a rear panel that define the machine room. Then, the external air sucked from the suction port by the rotation of the cooling fan first contacts the condenser to cool it, and then contacts the compressor to cool it, and then as warm air (air) from each outlet. It is designed to be discharged outside.

[0004]

In the refrigerated showcase, an opening for maintenance of the refrigeration mechanism is opened in the front of the machine room in the main body, and this opening is opened and closed by a front panel. It is configured to be performed. In this case, there is a gap between the condenser disposed in the machine room and the front panel, and a part of the hot air blown out from the cooling fan is re-entered from the suction side of the condenser through the gap. A so-called wraparound phenomenon was caused. In such a case, there is a serious problem that effective cooling of the heat-generating portions such as the condenser and the compressor is hindered, and that the cooling capacity is reduced due to insufficient cooling of the condenser. Further, it is pointed out that the internal temperature of the machine room increases due to insufficient cooling of the heat generating portion, and various electrical components housed in the electrical box generate heat to cause malfunction or failure.

[0005] The refrigerated showcase is disposed on the main body so that the front opening of the storage room can be opened and closed freely due to the difference between the internal temperature of the storage room and the outside air temperature or humidity during the cooling operation. Inevitably, dew condensation occurs on the outer surface (front surface) of the door, and this dew water may flow down the outer surface of the door and reach the front panel. In this case, a gap is inevitably created in the overlapping part of the front panel and the main body, which is detachably mounted on the main body, and condensed water infiltrates into the machine room from this gap and is installed inside. There is a possibility that the electrical components and the connection portion of the electrical component box are wetted and cause corrosion, electric leakage and the like. Further, the cleaning water for cleaning the main body may enter the machine room through a gap between the front panel and the main body, and similarly may cause corrosion or electrical leakage of electric components and connection parts.

Since the upper and lower parts of the front panel are generally fixed to the main body through a plurality of screws, there is a problem that the number of screwing operations is increased. In addition, when mounting or removing, the operator needs to support the front panel with his / her hand, knee, or the like until the upper or lower part is screwed, and the operation is complicated.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks inherent in the prior art, and has been proposed in order to solve the problem appropriately. The present invention relates to the efficiency of a condenser disposed in a machine room. It is an object of the present invention to provide an apparatus having a refrigeration mechanism capable of achieving effective cooling and preventing the occurrence of corrosion and electrical leakage of electrical components and the like due to dew water and the like.

[0008]

SUMMARY OF THE INVENTION In order to overcome the above problems and achieve the intended object, an apparatus having a refrigeration mechanism according to the present invention includes a compressor and a condenser in a machine room defined inside a main body. A refrigeration mechanism consisting of a condenser and the like is provided, and by the rotation of a cooling fan provided adjacent to the condenser, external air is sucked in through a plurality of suction ports formed in the main body to perform an air cooling action of the condenser, and to provide heat. In a device in which the exchanged air is discharged to the outside through a plurality of discharge ports provided in a main body, an arrangement surface of various operation units is directed to a front side of a front side of a fan cover surrounding the cooling fan. An electrical box is disposed in a posture, and an opening that opens to the front of the machine room is opened and closed. The front panel contacts the rear surface of the machine room on the machine room side, and various operations are performed. A shielding member surrounding the portion is provided.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an apparatus having a refrigerating mechanism according to the present invention. In addition, as an example of an apparatus equipped with a freezing mechanism, a refrigerated showcase will be described in the embodiments, but the present invention is not limited to this. Apparatuses equipped with a freezing mechanism include various refrigerators and ice makers. You may.

As shown in FIGS. 2 and 3, a refrigerated showcase 10 according to the embodiment has a box-shaped main body 1 formed in a vertically long shape.
1, a storage room 12 for chilling foods and beverages, and a machine room 1 for storing a refrigeration mechanism 13 and an electrical box 14.
5 are defined in a vertical relationship. Upper storage room 12
Is defined inside a heat insulating box 16 formed by filling a foamed heat insulating material such as urethane between the interior board and the exterior board. As shown in FIG. 3, a rectangular opening 16a that opens forward is formed in the front part of the heat insulating box 16, and the inner peripheral upper part and the lower part of the opening 16a have a total length in the width direction. Across
An upper rail 17 and a lower rail 18 made of synthetic resin are arranged correspondingly. The front door 19 and the rear door 20 are slidably supported in the width direction between the rails 17 and 18, respectively, so that the opening 16a can be opened and closed.

The upper ends of the columns 21 are fixed to the four corners of the lower surface of the heat-insulating box 16 by bolts.
The lower end horizontal portion 21a is fixed to a base plate 22 on which the refrigeration mechanism 13 is installed via a bolt 23 having a head 23a projecting upward (to the inner bottom surface of the machine chamber 15). (See FIG. 1). The lower ends of the left and right side panels 24 and 25 and the rear panel 26 disposed on the left and right side surfaces and the rear surface of the heat insulating box body 16 extend to the base plate 22, so that the base plate 22 and the heat insulating box Machine room 15 between body 16
Is defined. Further, a plurality of suction ports 27 are formed in a right side panel 25 located on the right side in FIG. 2 at a position corresponding to the machine room 15, and a left side panel 24 located on the left side also has a machine room A plurality of outlets (not shown) are formed at positions corresponding to 15.

As shown in FIG. 3, a cooler 28 for circulating and supplying a refrigerant from the refrigerating mechanism 13 and a fan 29 for circulating cool air are arranged below the heat insulating box 16 as shown in FIG.
The storage chamber 12 is configured to be cooled by the cool air supplied by the operation. As shown in FIG. 1, a refrigeration mechanism 1 for cooling the cooler 28 is provided on the base plate 22.
3, a condenser 30, a plurality of (two in the embodiment) cooling fans 31 and a compressor 32 are arranged in order from the right side to the left side of the machine room 15. The cooling fan 31
It is surrounded by a fan cover 33 that covers the outlet side (left side) of the condenser 30, and is configured to efficiently guide the external air sucked from the inlet 27 of the right side panel 25 to the condenser 30. . Note that the height of the condenser 30 and the fan cover 33 is set slightly smaller than the height of the machine room 15, and the height between the upper surface of the condenser 30 and the fan cover 33 and the bottom of the heat insulating box 16. Only a small gap is defined.

In front of the fan cover 33, an electrical box 14 containing electrical components such as a microcomputer board for controlling the operation of the refrigerated showcase 10 is provided so as to be in contact with the cover 33. An operation unit such as a temperature setting knob 34 and a power switch 35 for operating internal electric components is provided on an arrangement surface (front surface) facing the front side of the electric component box 14, and the operation unit is operated from the front side. It is configured to obtain.

At the front side of the machine room 15 is a heat insulating box 1
6. An opening 36 that opens forward is defined by the left and right columns 21 and 21 and the base plate 22, and the temperature setting knob 34 and the power switch 3 of the electrical box 14 are formed through the opening 36.
5 and the refrigeration mechanism 13 can be maintained. The opening 36 is configured to be opened and closed by a front panel 37. This front panel 37 is, as shown in FIG.
A support portion 39 extending horizontally rearward is formed on a lower rear surface (a surface facing the machine room 15) of a rectangular front plate 38 set to a size capable of covering the opening portion 36, and has a width of the opening portion 36. It is formed with a predetermined length in the direction. The support portion 39 is inserted into the machine room 15 through the opening portion 36 and is placed on the upper surface of the base plate 22 via the lower horizontal portion 21a of the support column 21. In this state, the upper portion of the front plate 38 is The lower rail 18 is set to contact the front surface. The support portion 39 is loosely fitted to each head 23a at a position corresponding to the heads (projections) 23a, 23a of the bolts 23, 23 for fixing the front left and right columns 21, 21 to the base plate 22. Through holes 39a each having a possible inner diameter are formed (see FIG. 7). Then, each of the through holes 39a is connected to the head 23a of the corresponding bolt 23.
And the upper part of the front plate 38 is attached to the lower rail 18.
The front panel 37 is fixed to the main body 11 by screwing the upper portion of the front plate 38 to the lower rail 18 via a plurality of decorative screws 40 in a state in contact with the front surface of the front panel 38.

The head 23a of the bolt 23
The protrusion height from the bottom of the machine room is such that the through-hole 39a engages with the head 23a in the state where the screw on the upper part of the front panel 37 is released, as shown in FIG. The dimension is set so that the upper end can be held in an oblique posture separated from the main body 11. That is, when the front panel 37 is attached to or detached from the main body 11, the worker can work without supporting the front panel 37 with his or her hands or knees.

FIG. 1 shows a rear surface of the front panel 37.
As shown in FIG. 4, at a position corresponding to the electrical box 14, a pair of side shields 41, 42 separated in the width direction and an upper shield 43 located between upper ends of both side shields 41, 42. Is provided. When the opening 36 is closed by the front panel 37, the rear surface of the shielding member 44 is the surface on which the electrical box 14 is disposed.
(Front) is set to abut. The upper end of the shielding member 44 extends to near the upper end of the electrical box 14,
And a front panel 37 to shield a gap formed between the cooling fan 31 and the hot air blown from the cooling fan 31 after the heat exchange.
It is configured to prevent (air) from flowing around the air suction side of the condenser 30. The shielding member 44 is made of an elastic member such as a soft synthetic resin or rubber, and is set so that its protruding dimension is larger than a design gap, so that the processing accuracy and the assembling accuracy of the front panel 37 and the electrical box 14 can be improved. Thus, even if there is a variation in the gap, the gap can be shielded by always abutting against the arrangement surface of the electrical component box 14.

The lower ends of the side shields 41 and 42 are in contact with the support 39, and when the opening 36 is closed by the front panel 37, the shield 44 and the support 3 are closed.
9, a temperature setting knob 34 facing the arrangement surface of the electrical component box 14.
And an operation unit such as the power switch 35. That is, the condensed water and washing water flowing down the doors 19 and 20 are supplied to the front panel 37 and the lower rail (main body 11) 18
Even if the water penetrates into the machine room 15 through the gap, the water is surely prevented from hanging on the operation section of the electrical component box 14 and getting wet. As shown in FIG. 6, the height dimensions of the left and right side shields 41 and 42 are set differently, and the upper shield 43 is configured to be inclined in the width direction. As a result, dew condensation water and cleaning water that have entered the machine room 15 are
It can be received by the inclined upper shielding body 43 and quickly flow down.

[0018]

Next, the operation of the refrigerated showcase according to the embodiment will be described. When the cooling fan 31 is rotated, as shown in FIG. 1, external air is sucked into the machine room 15 through a plurality of suction ports 27 formed in the right side panel 25. This air is sucked in from the air suction side of the condenser 30 to perform heat exchange, and then blown out from the cooling fan 31 toward the compressor 32. After heat exchange with the compressor 32, the left side It is discharged to the outside through a discharge hole formed in the panel 24.

As described above, the shielding member 44 of the front panel 37 comes into contact with the front surface of the electrical component box 14 provided on the front side of the fan cover 33, as shown in FIGS. Therefore, the gap between them is the machine room 15
Is shielded over substantially the entire length of the height dimension. Therefore,
The heat-exchanged air blown from the cooling fan 31 moves in the gap and is sucked again from the air suction side of the condenser 30 to effectively prevent the wraparound phenomenon. Thereby, insufficient cooling of the heat generating parts such as the condenser 30 and the compressor 32 due to overheating in the machine room can be prevented, and efficient operation of the condenser 30 and the compressor 32 can be achieved. Further, heat generation of various electrical components housed in the electrical box 14 can be suppressed, and malfunctions and failures can be effectively prevented.

When the condensed water generated on the doors 19 and 20 by the operation of the refrigerated showcase 10 flows down to the upper end of the front panel 37, the condensed water enters the machine room 15 through a gap between the panel 37 and the lower rail 18. I do. Further, the washing water used for washing the refrigerated showcase 10 is:
It may enter the machine room 15 through a gap between the front panel 37 and the lower rail 18. In this case, in the refrigerated showcase 10 of the embodiment, since the operation units such as the temperature setting knob 34 and the power switch 35 provided on the arrangement surface of the electrical box 14 are surrounded by the shielding member 44, It is possible to prevent dew condensation water and washing water that has entered from entering the operation unit, thereby preventing corrosion of electrical components and the like and occurrence of electric leakage and the like. Further, since the upper shielding body 43 in the shielding member 44 is inclined, the dew condensation water and the washing water flow down quickly without collecting on the upper part of the shielding member 44. The shielding member 44 is made of an elastic member such as a soft synthetic resin or rubber.
Even if the size of the gap varies due to the processing accuracy, the assembly accuracy, and the like of No. 4, the gap can be always shielded by contacting the mounting surface of the electrical box 14.

When the refrigeration mechanism 13 disposed in the machine room 15 is to be maintained or the operation unit of the electrical box 14 is to be operated,
The front panel 37 needs to be removed from the main body 11. In this case, the front panel 37 of the embodiment is configured such that the through holes 39a of the support portions 39
Can be held diagonally in the state of being engaged with the head 23a of
(See FIG. 5), the operator does not need to support the front panel 37 with his or her hands or knees, and can easily remove and attach the panel 37. In addition, the front panel 37 is not accidentally dropped on the floor surface during mounting or removal, and the panel 37 can be prevented from being damaged. Furthermore,
As a projection for supporting a lower portion of the front panel 37, a head 23a of a bolt 23 for fixing the columns 21, 21 for defining the machine room 15 to the base plate 22 is used, and the front panel 37 has a plurality of upper portions. Can be fixed by screwing, the number of parts (the number of decorative screws 40) can be reduced, and the man-hours for mounting and removing operations can be reduced.

Since the shielding member 44 is provided on the front panel 37, if the panel 37 is removed, the shielding member 44 does not hinder the operation and maintenance of the operation unit. In addition, since the front panel 37 and the shielding member 44 are integrated, there is no need to separately provide a lid that covers the arrangement surface of the electrical box 14.

In the embodiment, the shielding member is constituted by the three shielding members on the left and right and the upper part. However, the shielding member may be constituted by four shielding members on the left, right and up and down. Each shield may be separate or integral. Further, in the embodiment, the case has been described in which two cooling fans are provided, but the number of the cooling fans may be one or three or more. Although the front panel is screwed to the lower rail in the embodiment, the upper part of the panel may be screwed to the main body (insulated box).

[0024]

As described above, according to the apparatus having the refrigerating mechanism according to the present invention, the shielding member of the front panel is brought into contact with the front mounting surface of the electrical box provided on the front side of the fan cover. To block the gap between them,
The heat-exchanged air blown out from the cooling fan can be effectively prevented from being sneak-in phenomenon that is sucked again from the air suction side of the condenser. Thus, it is possible to prevent insufficient cooling of the heat generating parts of the condenser and the compressor due to overheating in the machine room, and to achieve efficient operation of the condenser and the compressor. In addition, there is an effect that heat generation of various electric components housed in the electric box can be suppressed, and malfunction and failure can be effectively prevented.

Since the operation section provided on the arrangement surface of the electrical box is surrounded by the shielding member, it is possible to prevent dew condensation water and washing water entering the machine room from flowing into the operation section from the gap between the front panel and the main body. This can prevent the occurrence of corrosion, electrical leakage, and the like of electrical components and the like. Further, since the shielding member 44 is formed of a member having elasticity, even if there is a variation in the gap due to the processing accuracy and the assembling accuracy of the front panel and the electrical box, the shielding member 44 always contacts the arrangement surface of the electrical box. The gap may be shielded.

Since the front panel can be held obliquely with the through hole of the support part engaged with the projection in the machine room, there is no need for the operator to support the front panel with his or her hands or knees. The panel can be easily removed and attached. In addition, since the projection uses the head of the bolt for fixing the support for defining the machine room to the base plate, the number of parts and the number of working steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing a refrigerated showcase according to an embodiment of the present invention.

FIG. 2 is a front view showing the refrigerated showcase of the embodiment with a part thereof cut away.

FIG. 3 is a side view showing a part of the refrigerated showcase of the embodiment in a longitudinal section.

FIG. 4 is a side sectional view showing a main part of a main body of the embodiment with a front panel fixed thereto.

FIG. 5 is a sectional side view of a main part showing a state where the front panel is held obliquely with respect to the main body of the embodiment.

FIG. 6 is a rear view of the front panel of the embodiment.

FIG. 7 is a sectional side view of a main part showing an engagement portion between the front panel and the head of the bolt according to the embodiment.

[Explanation of symbols]

Reference Signs List 10 body, 13 refrigeration mechanism, 14 electrical box, 15 machine room, 21 support 22 base plate, 23 bolt, 23a head (projection), 27 suction port, 30 condenser 31 cooling fan, 32 compressor, 33 fan cover 34 Temperature setting knob (operation unit), 35 power switch (operation unit) 36 opening, 37 front panel, 38 front plate, 39
Support part 39a Through hole, 44 Shielding member

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshinori Tanaka 3-16 Hoshizaki, Sakaemachi Minamikan, Toyoake City, Aichi Prefecture Inside (72) Inventor ▲ Yoshi ▼ Akira Yoshida 16-16 Hoshizaki, Sakamachi Town, Toyoake City, Aichi Prefecture Electric Co., Ltd.

Claims (5)

[Claims] A refrigeration mechanism (13) including a compressor (32) and a condenser (30) is provided in a machine room (15) defined inside a main body (11). By the rotation of the cooling fan (31) provided adjacently, external air is sucked in through the plurality of suction ports (27) perforated in the main body (11) to perform the air cooling action of the condenser (30),
In a device in which the heat-exchanged air is discharged to the outside through a plurality of discharge ports provided in the main body (11), various operations are performed in front of a fan cover (31) surrounding the cooling fan (31). Electrical box (14) with the installation surface of the parts (34, 35) facing forward
And an opening (36) that opens to the front of the machine room (15).
A shield member (44) that contacts the arrangement surface of the electrical box (14) and surrounds the various operation units (34, 35) on the rear side of the machine room of the front panel (37) that opens and closes the front panel (37). ), Wherein the apparatus is provided with a refrigeration mechanism. 2. The apparatus according to claim 1, wherein the shielding member is formed of an elastic member. 3. The front panel (37) is provided with the opening part.
On the lower rear surface of the front plate (38) set to dimensions that can cover (36),
A support portion (39) is provided to be inserted into the machine room (15) from the opening (36), and the support portion (39) has a protrusion (23a) protruding from the inner bottom surface of the machine room (15). A through hole (39a) to be loosely fitted is formed, and the upper portion of the front plate (38) is screwed to the main body (11) in a state where the through hole (39a) is loosely fitted to the projection (23a). An apparatus provided with the refrigeration mechanism according to claim 1 or 2. 4. The protrusion height of the projection (23a) is such that a through hole (39a) is engaged with the projection (23a) when the front panel (37) is unscrewed from the upper part. 4. An apparatus provided with a refrigerating mechanism according to claim 3, wherein the panel is set to a size capable of holding the panel obliquely. 5. The projection of a bolt (23) for fixing a support (21) defining the machine room (15) to a base plate (22) on which the refrigeration mechanism (13) is installed. 4. The head (23a).
Or an apparatus provided with the refrigeration mechanism according to 4.