JP2022175878A - refrigerated showcase - Google Patents

Abstract

To provide a refrigerated showcase which can prevent an adverse effect on a compressor and a related apparatus caused by the heat of the compressor.SOLUTION: A refrigerated showcase 10 comprises an intake port for making atmospheric air flow into a machine room 16, and an exhaust port 52 formed at a right side panel 32 which forms the machine room 16, and making air in the machine room 16 flow out to the outside by a rotational operation of a fan F. A compressor CM is arranged at an opposite side to the intake port 51 with the fan F sandwiched between the intake port and the opposite side. A capacitor 70 is arranged between a send-out side of the fan F and the exhaust port 52 out of a surrounding space 55 of the compressor CM which is formed in the machine room 16 as obstruction means for obstructing a flow of air progressing toward a direction in which the exhaust port 52 is located from the send-out side of the fan F, and guiding it to a second region 57.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a refrigerated showcase having a storage compartment for cold storage of articles and a mechanical compartment for housing a compressor, a condenser and a fan.

BACKGROUND OF THE INVENTION Refrigerated showcases are widely used for displaying items such as food and beverages while cooling them in a storage room so that they can be seen from the outside. A refrigerated showcase has a machine room partitioned from a storage room, and this machine room houses a cooling mechanism (compressor, condenser, expansion valve, etc.), a fan, etc. for cooling the storage room. ing. The machine room communicates with the outside through the intake and exhaust vents, and the fan in the machine room (near the intake vent) operates to suck outside air into the machine room through the intake vents and exhaust the air in the machine room through the exhaust vents. configured as In this way, the refrigerated showcase is configured to replace the air in the machine room by the operation of the fan, promote heat dissipation from the condenser and compressor located in the machine room, and prevent excessive temperature rise in the machine room. I have to.

JP 2008-298382 A

As a refrigerated showcase, for example, a case called a sushi topping case for displaying and refrigerating perishable ingredients such as sushi toppings generally has a laterally long shape and is installed at a counter of a sushi restaurant or the like. The customer sits in front of the counter where the material case is placed, and the store clerk takes in and takes out the ingredients behind the material case. Air is drawn into the machine room from the top and exhausted to the side of the material case. At the side end of the material case where the machine room is formed, a side panel forming one side surface is provided with an exhaust port, and the exhaust port is adjacent to the intake port of the rear panel. In other words, since the intake port and the exhaust port do not have a positional relationship that sandwiches the compressor, part of the air taken into the machine room from the intake port is shortcutted around the compressor on the side near the exhaust port and discharged to the outside. be done. In this way, the air that is discharged through a shortcut in the machine room is discharged without sufficient heat exchange with the compressor in the machine room, resulting in a high temperature inside the machine room and adversely affecting the compressor and related equipment. There is a risk that

SUMMARY OF THE INVENTION Accordingly, the present invention has been proposed in view of the above-mentioned problems inherent in conventional refrigerated showcases, and has been proposed to preferably solve the problems. The purpose is to provide a refrigerated showcase.

In order to overcome the above problems and achieve the intended purpose, the invention according to claim 1 is
A machine room that is provided on one side of the inside of a box that constitutes the outer shell and houses a compressor and a fan, and a back plate that forms the machine room, and is formed on the back plate that forms the machine room and allows outside air to flow into the machine room by the operation of the fan. and an exhaust port that is formed in a side plate forming the machine room and discharges the air in the machine room to the outside by the operation of the fan. In a refrigerated showcase in which a compressor is arranged,
In a space surrounding the compressor formed in the machine room so as to communicate with the exhaust port, between the fan delivery side and the exhaust port, a direction in which the exhaust port is located from the fan delivery side The gist of the present invention is that an obstruction means is provided for obstructing the flow of air directed toward the air outlet and guiding it to a path in the surrounding space on the side away from the exhaust port.
According to the first aspect of the invention, in the machine room, the amount of air flowing through the path away from the exhaust port in the space surrounding the compressor is increased, and stagnation of air in the machine room is suppressed. Therefore, the compressor sufficiently dissipates heat, the machine room is efficiently ventilated, and the excessive temperature rise of the compressor and related equipment in the machine room is prevented. That is, it is possible to suppress the adverse effects of the heat generated by the compressor (adverse effects such as reducing the durability of the compressor and related equipment and shortening their life).

In the invention according to claim 2,
The gist is that the inhibition means is a capacitor electrically connected to a drive source of the compressor.
According to the second aspect of the invention, by using the capacitor as the obstructing means, it is possible to suppress demerits such as an increase in the number of members in the machine room, complication in the machine room, and an increase in cost.

In the invention according to claim 3,
An expansion valve connected via a refrigerant pipe to an evaporator that cools a storage room in which articles are cold stored is arranged in the machine room so as to be positioned above a region facing the fan and the compressor. This is the gist of it.
According to the third aspect of the invention, the expansion valve inhibits the upward movement of air from the facing area due to contact with the compressor and the inhibiting means, so that the air moves toward the path away from the exhaust port in the surrounding space. can be induced. This increases the amount of air flowing through the path away from the exhaust port in the surrounding space, suppressing air stagnation in the machine room, thereby reducing the adverse effects of the heat generated by the compressor (durability of the compressor and related equipment). Adverse effects such as lowering the performance and shortening the life) can be suppressed.

According to the refrigerated showcase of the present invention, it is possible to suppress adverse effects of the heat of the compressor on the compressor and related equipment.

1 is a perspective view of a refrigerating showcase according to an embodiment as seen from the upper right front; FIG. A machine room formed inside the box is indicated by a dashed line. It is a perspective view of the mechanical unit housed in the right end of the refrigerated showcase as seen from the upper left front. In addition, the outline of the machine room is indicated by a one-dot chain line. It is a top view which shows a mechanical unit. It should be noted that the surroundings of the machine unit are shown in a state in which the front, rear, left, and right walls (rear panel, front panel, right side panel, partition plate) of the machine room are crossed near the lower end. It is a right side view of a machine unit. FIG. 2 is a plan view of the shroud showing the condenser, fan, etc. in dashed lines; It is an explanatory diagram related to the air flow in the machine room accompanying the operation of the fan, with the position of the shroud (first plate part) in the plan view of the machine room as a reference, the intake port, the exhaust port, the condenser, the fan, and the compressor , the positional relationship of the capacitor, the expansion valve, etc., is simply indicated using a one-dot chain line, and the flow of air from the intake port to the exhaust port is indicated by an arrow (two-dot chain line).

BEST MODE FOR CARRYING OUT THE INVENTION Next, a preferred embodiment of the refrigerated showcase according to the present invention will be described below with reference to the accompanying drawings. In the description of the specification, "left" and "right" mean left and right when the refrigerated showcase 10 is viewed from the front side (front side). In the embodiment, the refrigerated showcase 10 having a form called a "neta case" will be described, but the present invention can also be applied to refrigerated showcases of other forms.

(Regarding the schematic configuration of the refrigerated showcase 10)
As shown in FIG. 1, a refrigerated showcase (food case) 10 of the embodiment has an outer shell formed by a box 12 elongated in the left and right direction. Inside the box 12, there are a storage chamber 14 for cooling and preserving foodstuffs (goods) that can be visually recognized from the outside (front), and components of a cooling mechanism 18 for cooling the storage chamber 14 (compressor CM, A machine room 16 for housing a condenser CD, an expansion valve EV, a refrigerant pipe P), a fan F and the like is formed. The storage room 14 and the machine room 16 are formed side by side on the left and right, and the left three-fourths (or four-fifths) of the inside of the box body 12 is the storage room 14, and the remaining right-hand one-fourth (or five About 1/1) is the machine room 16 . The box 12 has a dish-shaped box base 34 that is long in the left and right as a pedestal, and a plurality of panels 24, 26, 28 assembled along a frame (not shown) forming a framework on the upper surface side of the box base 34. , 30, 32 form the outer surface. A transparent windshield 20 is provided on the front side of the box 12 so that the storage room 14 can be viewed from the front. A slide door 22 is provided in the left and right so as to be openable and closable.

Here, the storage room 14 includes a windshield 20, a slide door 22, a box base 34 (parts other than the right end), a top panel 24 (parts other than the right end) forming the upper surface of the box 12, and a box It is formed by a left side panel 30 forming the left side of the body 12 and a partition plate 36 separating the storage compartment 14 and the machine compartment 16 .

The machine room 16 includes the top panel 24 and the right end of the box base 34, a partition plate 36, a front panel 26 forming the front surface of the box 12, and a rear panel (back panel) forming the rear surface of the box 12. ) 28 and a right side panel (side plate) 32 forming the right side of the box 12 . That is, the machine room 16 is formed by four plate surfaces (front, rear, left, and right plate surfaces) of the rear surface of the front panel 26, the front surface of the rear panel 28, the right side surface of the partition plate 36, and the left side surface of the right side panel 32. . The machine room 16 accommodates a compressor CM, a condenser CD, an expansion valve EV, a fan F, and the like in an integrally assembled state (as a machine unit U). The mechanical unit U accommodated in this machine room 16 is shown in FIGS. 2 to 4. FIG.

In the cooling mechanism 18, each device is connected by a refrigerant pipe P so that the refrigerant circulates in the order of the compressor CM, the condenser CD, the expansion valve EV, and the evaporator EP. That is, the vaporized refrigerant compressed by the compressor CM passes through the refrigerant pipe P, is condensed and liquefied by the condenser CD, is decompressed by the expansion valve EV, flows into the evaporator EP, expands at once, evaporates, and is stored. The storage chamber 14 is cooled by exchanging heat with the air in the chamber 14 . Then, the vaporized refrigerant that has been evaporated and heat-exchanged in the evaporator EP returns to the compressor CM via the refrigerant pipe P, repeating the cycle. The evaporator EP communicates with a specific refrigerant pipe Pa (see FIGS. 2 and 3) extending leftward (toward the partition plate 36) from the expansion valve EV among the refrigerant pipes P constituting the cooling mechanism 18. It is arranged in the upper part of the storage chamber 14 as shown in FIG. A portion of the refrigerant pipes P including this specific refrigerant pipe Pa is thermally insulated by covering the outer surface with a cylindrical heat insulating material 38 . Further, as means for cooling the condenser CD, a fan F (see FIG. 4) arranged in the mechanical unit U so as to face the condenser CD is used.

As shown in FIG. 3, a rear panel 28 that covers the machine room 16 from behind is formed with an intake port 51 that communicates the machine room 16 with an external space behind the box 12 . A right side panel 32 that covers the machine room 16 from the right side is formed with an exhaust port 52 that communicates the machine room 16 with the external space on the right side of the box body 12 . A compressor CM is mounted approximately in the center of the machine room 16, and between the outer peripheral surface of the compressor CM and each plate surface (front, rear, left, and right plate surfaces) forming the machine room 16 from the front, rear, left, and right. An enclosing space 55 that surrounds the compressor CM and communicates with the exhaust port 52 is defined therein. In the machine room 16 , the compressor CM is positioned in front of an intake port 51 formed in the rear panel 28 and to the left of an exhaust port 52 formed in the right side panel 32 . In addition, in the machine room 16, a condenser CD is disposed behind the compressor CM so as to be close to and face the front surface (inner surface) of the rear panel 28, and a fan F is provided on the front side of the condenser CD. It is arranged in a posture in which the central rotation axis is oriented in the front-rear direction (see FIGS. 4 and 5).

The condenser CD is arranged in the machine room 16 with its upper surface and front surface covered by a shroud 60 formed by bending a sheet metal. As shown in FIGS. 4 and 5, the shroud 60 includes a first plate portion 61 extending vertically and having a rear surface facing the front surface of the condenser CD, and a first plate portion 61 extending rearward from the upper edge of the first plate portion 61 . A second plate portion 62 having a lower surface facing the upper surface of the condenser CD is provided, and a substantially central portion of the first plate portion 61 is formed with a large vent hole 61a that is circular in front view. The fan F is attached to the first plate portion 61 by an attachment frame (not shown) in alignment with the position of the air vent 61a. A cylindrical cover member 63 opening in the front-rear direction is attached to the front surface of the first plate portion 61 and positioned to cover the fan F from the outer peripheral side. The ventilation port 61 a of the first plate portion 61 and the fan F are located forward of the formation range of the air intake port 51 in the rear panel 28 .

In this way, the machine room 16 is arranged in the order of the fan F, the condenser CD, and the rear panel 28 (intake port 51) from the front to the rear with respect to the compressor CM. The exhaust port 52 of the side panel 32 is open. That is, the air (outside air) taken into the machine room 16 through the intake port 51 passes forward through the condenser CD and is sent out from the fan F toward the compressor CM. When the outside air is taken into the machine room 16 from the intake port 51, the air in the machine room 16 passes around the compressor CM (surrounding space 55) and is pushed out from the exhaust port 52 to the right side of the box body 12. It is discharged and the inside of the machine room 16 is ventilated.

The surrounding space 55 in the machine room 16 is located on the compressor CM side (front side) of the shroud 60 (the first plate portion 61), excluding the arrangement side of the condenser CD, and the fan F (rotational operation range) and An area between the compressors CM (hereinafter referred to as "opposing area 55a") and a space formed between the first plate portion 61 and the compressor CM so as to connect the right end of the opposing area 55a and the exhaust port 52 (hereinafter referred to as "first area 56") and a space portion (hereinafter referred to as "first 2 area 57''). Here, in the refrigerated showcase 10, the right edge of the rear panel 28 having the intake port 51 formed thereon and the rear edge of the right side panel 32 having the exhaust port 52 formed thereon are connected to form the plate surface of the rear panel 28. Since the plate surface of the right side panel 32 and the plate surface of the right side panel 32 face in a direction perpendicular to each other, and the exhaust port 52 is located rightwardly with respect to the intake port 51, air flows from the opposing region 55a through the first region 56. The moving distance of the air to reach the exhaust port 52 is significantly shorter than the moving distance of the air to reach the exhaust port 52 from the opposing region 55 a through the second region 57 . That is, the first area 56 functions as a direct path for the air taken into the machine room 16 to go directly to the exhaust port 52. Therefore, the flow of air that passes through the first area 56 and is discharged from the exhaust port 52 is The movement distance of the air in the chamber 16 becomes short, and sufficient heat exchange with the compressor CM is not performed. On the other hand, the second region 57 can function as a detour path leading to the exhaust port 52 by detouring the air taken into the machine room 16, but the air sent out from the fan F flows from the opposing region 55a to the first region 56. If the air flows easily, it becomes difficult for the air to flow in the second region 57, the temperature of the compressor CM rises, and the temperature of the entire machine room 16 also rises. As a result, the temperature of the compressor CM and related equipment in the machine room 16 rises, which may cause problems. Therefore, in this embodiment, the flow of air in the machine room 16 (surrounding space 55) is controlled by blocking means (capacitor 70), which will be described later, to realize sufficient heat exhaustion from the compressor CM.

(Regarding the blocking means (capacitor 70))
As shown in FIG. 5, the shroud 60 includes a support piece 64 extending forward from the upper end of the right edge of the first plate portion 61, and a strip-shaped fixing plate 65 facing the left side surface of the support piece 64. is provided. The support piece 64 and fixing plate 65 are used to fix a capacitor (inhibition means) 70 electrically connected to the drive source of the compressor CM. This capacitor 70 is a start capacitor that applies a starting torque to a motor (single-phase induction motor) as a driving source of the compressor CM, and has a cylindrical shape as a whole. Note that the capacitor 70 is a consumable item (if deterioration progresses, it causes a decrease in starting torque, an increase in current, vibration, etc.), so it is provided outside the compressor CM so that it can be replaced. The capacitor 70 is generally arranged at a position within the machine room 16 where replacement work is easy, for example, on the ceiling surface of the machine room 16 or the like. On the other hand, in this embodiment, the capacitor 70 is sandwiched between the support piece 64 and the fixed plate 65, and in this state, the extension ends (front ends) of the fixed plate 65 and the support piece 64 are screwed. , a capacitor 70 is fixed to the right side of the front surface of the shroud 60 (first plate portion 61).

Here, the capacitor 70 is arranged in the surrounding space 55 at a position that can block the flow of air from the delivery side of the fan F (the front end of the rotational movement range) to the side where the exhaust port 52 is located ( That is, it functions as a means of inhibition). Specifically, the capacitor 70 is positioned in front of the first plate portion 61 in the surrounding space 55 in the machine room 16, in the first area 56, or in a position to the right (close to the exhaust port 52) in the opposing area 55a. is disposed, the capacitor 70 comes into contact with the air sent from the fan F and induces more air to flow toward the second region 57 than toward the first region 56 . Here, a more specific position (range) of the capacitor 70 in this embodiment will be described with reference to FIGS. 4 to 6. FIG. The range occupied by the capacitor 70 in the left-right direction of the machine room 16 is defined by the position close to the fan F from the right (the position close to the right side surface of the cover member 63 surrounding the fan F from the outer peripheral side) as the left end, and the first plate The right end is a range that overlaps the right end of the portion 61 in the front-rear direction. That is, as shown in FIG. 6, the capacitor 70 of this embodiment is arranged at a position (left end portion of the first region 56) approaching the facing region 55a (region in front of the fan F) from the right side. In addition, the range in which the capacitor 70 occupies the machine chamber 16 in the front-rear direction has a rear end at a position close to the front surface of the first plate portion 61 and a front end at a position slightly forward of the rear end of the compressor CM. It has become. Furthermore, as shown in FIG. 4 , the range occupied by the capacitor 70 in the vertical direction of the machine room 16 is above the fan F (rotational operation range) or the cover member 63 and is above the upper edge of the first plate portion 61 and the front and rear sides of the first plate portion 61 . The upper end is the position overlapping with , and the lower end is the position below the fan F (rotational operation range) or the cover member 63 . That is, in this embodiment, the vertical dimension of the capacitor 70 is larger than the vertical dimension of the fan F (rotating range), and the entire fan F (rotating range) is located within the range from the upper end to the lower end of the capacitor 70. , and the capacitor 70 is arranged according to the height position of the fan F.

As shown in FIG. 4, the capacitor 70 is in an orientation along the extending direction (vertical direction) of the gap between the shroud 60 (the first plate portion 61) and the compressor CM (vertical orientation with the longitudinal direction directed vertically). ), and fills the gap between the shroud 60 (first plate portion 61) and the compressor CM over a wide range vertically and longitudinally. As shown in FIG. 6 , the capacitor 70 is located within the first region 56 and its front side is adjacent to the compressor CM to narrow the path through which the air can go straight to the exhaust port 52 within the first region 56 . (The portion where the air movement path is narrowed is hereinafter referred to as "constricted portion 56a"). That is, air flow resistance increases in the constricted portion 56a of the first region 56, making it difficult for the air from the opposing region 55a to pass through the constricted portion 56a. Therefore, although some of the air passes through the constricted portion 56a, most of the air does not pass through the constricted portion 56a and flows toward the opposing region 55a. The air flowing toward the facing area 55 a in this way is pushed by the air sent out from the fan F immediately after that, and advances to the second area 57 of the surrounding space 55 which is separated from the exhaust port 52 . As a result, the flow of air from the first region 56 to the exhaust port 52 is suppressed, and the flow of air from the second region 57 to the exhaust port 52 increases. Thus, by arranging the capacitor 70 at a position functioning as a blocking means in the surrounding space 55 of the machine room 16 , the air taken into the machine room 16 from the outside can sufficiently flow into the second region 57 . In other words, the configuration is such that it is possible to sufficiently solve the conventional problem associated with the air flow in the machine room 16 that the air from the fan F tends to go directly to the exhaust port 52 through the first region 56 . Note that the capacitor 70 does not completely block the movement path of air going straight from the delivery side of the fan F to the exhaust port 52, but is arranged to secure a narrowed portion 56a between itself and the compressor CM. Therefore, around the compressor CM, according to the rotation of the fan F, air flows not only in the second region 57 but also in the first region 56, and the air around the compressor CM flows as a whole. It is configured such that heat is efficiently exchanged with the entire outer peripheral surface of the compressor CM and then discharged from the machine room 16 .

(Regarding the second obstruction means (expansion valve EV))
Further, in this embodiment, in addition to the inhibiting means (capacitor 70) described above, the expansion valve EV connected to the evaporator EP and the refrigerant pipe P (the specific refrigerant pipe Pa) is arranged upward from the facing region 55a. It is arranged so as to function as a second blocking means that blocks the movement of air. Specifically, as shown in FIGS. 3 and 4, the expansion valve EV is arranged above the opposing region 55a between the fan F and the compressor CM. As described above, in the facing area 55a, the flow of air passing through the fan F and going from the facing area 55a toward the first area 56 is blocked by the capacitor 70. As shown in FIG. In this case, when the air in contact with the capacitor 70 moves upward, the air passes over the capacitor 70 and passes through the exhaust port 52 via the first region 56, so that sufficient heat is generated with the compressor CM. no exchange takes place. Therefore, by arranging the expansion valve EV so as to cover the opposing region 55a from above, the air sent from the fan F to the compressor CM side is restricted from rising from the opposing region 55a, It has a configuration that guides it to flow. As shown in FIGS. 2 to 4, the expansion valve EV is provided with insulation 75 for preventing dew condensation, and has a horizontally wide flat shape as a whole. The entire expansion valve EV, including the insulation, covers a range extending from the rear end position of the compressor CM to the front end position of the fan F (the front end position of the cover member 63) above the opposing region 55a. located to be. In addition, a part (right portion) of the insulation 75 is positioned so as to cover the upper surface of the capacitor 70 arranged on the upper right portion of the shroud 60 from above at a close position, so that the gap between the expansion valve EV and the capacitor 70 is widened. narrowed.

(Regarding the third obstruction means (specific refrigerant pipe Pa))
Furthermore, in this embodiment, in addition to the above-described inhibiting means (capacitor 70) and second inhibiting means (expansion valve EV), the specific refrigerant pipe Pa connecting the expansion valve EV and the evaporator EP is It is arranged so as to function as a third blocking means that blocks movement of air upward from the left end of the opposing region 55 a or the rear end of the second region 57 . Specifically, as shown in FIGS. 2 and 3 , a specific refrigerant pipe Pa is arranged in a meandering manner on the upper left side of the expansion valve EV, and the left end of the facing region 55a in the surrounding space 55 It covers the area from the rear end of the second area 57 to the rear end of the second area 57 from above. In addition, the outer surface of the specific refrigerant pipe Pa is covered with the heat insulating material 38 as described above, and the diameter dimension is greatly enlarged by the heat insulating material 38. The upper position relative to the rear end of 57 is covered extensively. That is, the specific refrigerant pipe Pa whose outer surface is covered with the heat insulating material 38 restricts the rise of the air at the left end of the opposing region 55a and the rear end of the second region 57, thereby reducing the air to the second It is adapted to be moved from area 57 to exhaust port 52 . Note that the specific refrigerant pipe Pa does not cover the left end portion of the facing region 55a and the position above the rear end portion of the second region 57 without gaps. That is, dew condensation on the upper portion of the compressor CM and the refrigerant pipe P is prevented by allowing the air to rise to the upper portion of the machine room 16 to some extent.

[Action of Example]
Next, operation of the refrigerated showcase 10 according to the embodiment will be described with reference to FIG.

In the refrigerated showcase 10 of the embodiment, air (outside air) is taken into the machine room 16 from the rear intake port 51 by rotating the fan F disposed in the machine room 16 . The air (outside air) that has passed through the air intake port 51 passes forward through the condenser CD, passes through the air vent 61a formed in the first plate portion 61 of the shroud 60, and is directed forward by the fan F (fan F and the facing area 55a) of the compressor CM. Since the compressor CM is arranged in front of the fan F, the air sent out from the fan F contacts the rear part of the outer peripheral surface of the compressor CM. Here, since the capacitor (inhibition means) 70 is positioned in the first region 56 , the air tends to flow from the opposing region 55 a to the exhaust port 52 on the right side by shortcut due to contact with the outer peripheral surface of the compressor CM. The air flows through the exhaust port 52 because the capacitor 70 forms a constricted portion 56a between the compressor CM in the first region 56 and narrows the path in which the air sent from the fan F goes straight to the exhaust port 52. Movement to the side is hindered. Therefore, although some of the air reaching the constricted portion 56a passes through the constricted portion 56a (the first region 56) and reaches the exhaust port 52, most of the air changes its moving direction and advances to the second region 57. do. That is, the flow of air from the first region 56 to the exhaust port 52 is suppressed, and the flow of air from the second region 57 to the exhaust port 52 is increased. The upper side of the opposing region 55a is covered with an expansion valve EV with insulation 75 applied. Further, the area from the left end of the facing area 55 a to the rear end of the second area 57 is covered with a specific refrigerant pipe Pa insulated by the heat insulating material 38 . Therefore, the air in the facing area 55a flows to the side away from the first area 56 and the exhaust port 52, that is, to the second area 57 side of the surrounding space 55 in response to the subsequent continuous blowing of air from the fan F. . Since the air that reaches the exhaust port 52 from the opposing region 55a through the second region 57 contacts a wide range of the outer peripheral surface of the compressor CM, the air is sufficiently heat-exchanged with the compressor CM and heated. It is discharged to the outside from the exhaust port 52 .

Thus, in the refrigerated showcase 10 of the embodiment, the air flow from the delivery side of the fan F toward the direction where the air outlet 52 is located (the air flow reaching the air outlet 52 via the first area 56 side ), the air flowing through the path (second region 57) on the side of the surrounding space 55 away from the exhaust port 52 increases, and the machine room Air stagnation within 16 is suppressed. Therefore, the compressor CM sufficiently dissipates heat, the machine room 16 is efficiently ventilated, and the excessive temperature rise of each device in the machine room 16 (compressor CM, related devices such as the condenser CD, etc.) is prevented. In other words, it is possible to suppress adverse effects (such as reducing the durability of the compressor CM and related devices and shortening their life) due to the heat generated by the compressor CM.

Here, by using the capacitor 70 electrically connected to the drive source of the compressor CM as a blocking means, there are disadvantages such as an increase in the number of parts in the machine room 16, complication in the machine room 16, and an increase in cost. can be suppressed.

Further, an expansion valve EV connected via a refrigerant pipe P to an evaporator EP that cools the storage chamber 14 in which articles are cooled and stored is located above the opposing region 55a of the fan F and the compressor CM in the machine room 16. Therefore, the expansion valve EV inhibits the upward movement of air from the opposing region 55a due to contact with the compressor CM and the capacitor 70, and the side of the surrounding space 55 away from the exhaust port 52 route (second region 57). As a result, the air flowing in the second region 57 is increased, and the stagnation of the air in the machine room 16 is suppressed. adverse effects such as shortening the service life of the product) can be suppressed.

[Change example]
The present invention is not limited to the configurations of the above-described embodiments, and can be employed with the following modifications, for example.
(1) In the embodiment, for a refrigerated showcase in which a storage room and a machine room are arranged side by side inside a box body, the air sent from the fan is prevented from going straight to the exhaust port by means of a blocking means (compressor However, the air intake is formed on the back panel (rear panel) that forms the machine room, and the exhaust port is formed on the side panel (right side panel). As long as it is formed, the inhibiting means of the present invention can be applied even to a refrigerated showcase in which a storage room and a machine room are arranged vertically inside a box.
(2) In the embodiment, the machine room is formed on the right side of the storage room inside the box, but the machine room may be formed on the left side of the storage room (that is, the positional relationship with the storage room is reversed. may). In this case, the upper surface of the left end of the box base, the lower surface of the left end of the top panel, the rear surface of the front panel, the front surface of the rear panel, the left surface of the partition plate, and the right surface of the left side panel are A chamber is formed, an intake port is formed in the rear panel (back plate), and an exhaust port is formed in the left side panel (side plate), and the fan delivery side in front of the intake port (back of the compressor) and the compression A capacitor can be placed as a blocking means between the air outlet on the left side of the aircraft. The positional relationship of the compressor, fan, condenser and rear panel in this case may be the same as in the embodiment.
(3) In the embodiment, an obstructing means (capacitor) for obstructing the air sent from the fan in the machine room from going straight to the exhaust port is positioned above and opposed to the opposed area of the fan and the compressor in the machine room. Although the second impeding means (expansion valve) that impedes the movement of air upward from the region is provided, even if only the impeding means (capacitor) is provided and the opposing region is opened upward, the compressor It is possible to expect the effect of inhibiting means to suppress the adverse effects of heat.
(4) In the embodiment, the capacitor electrically connected to the drive source of the compressor was used as the blocking means for blocking the flow of air from the delivery side of the fan toward the position of the exhaust port. A configuration in which a member (for example, a dedicated plate-shaped member or the like) is used as the blocking means may be employed.
For example, a plate-shaped member that rises upward from the bottom surface of the machine unit (or machine room) and is positioned closer to the exhaust port side (on the first region) than the facing region in front of the fan is is provided in a posture facing the opposing area and the exhaust port, and the plate-like member completely or partially blocks the space between the shroud (condenser) and the compressor (blocks the air movement path in the first area or narrow). By configuring in this way, the plate-like member can function as the blocking means.
(5) In the embodiment, the inhibiting means (capacitor) is arranged at the left end of the first area (position close to the opposing area), but the inhibiting means may be arranged at a position closer to the exhaust port in the opposing area. , the blocking means may be arranged on the right end side along the side plate (right side panel) in the first region. Even when such an obstruction means is arranged, the obstruction means obstructs the flow of air from the delivery side of the fan toward the direction where the exhaust port is located, and the path (second area) to increase air flow.
(6) In the embodiment, the lower end of the rotation range of the fan is lower than the lower end of the inhibition means (capacitor). Even if it is configured to For example, since the height position of the rotational movement range of the fan and the height position of the obstructing means overlap in a relatively wide range, the disposition of the obstructing means in this case should be within the rotational movement range of the fan (the opposing area in front of it). It can be said that it is arranged according to the height position, and the blocking means can efficiently block the flow of air from the delivery side of the fan toward the direction where the exhaust port is located.
Further, in the embodiment, the entire rotational movement range of the fan is located in the range from the upper end to the lower end of the obstruction means in the vertical range of the machine room. In the case where the upper and lower dimensions of the operating range are smaller than the operating range, the entire impeding means is positioned within the range from the upper end to the lower end of the rotating operating range of the fan. It can be arranged according to the height position of the opposing area).
(7) In the embodiment, the cover surrounding the fan is provided on the front surface of the first plate portion of the shroud, and the inner space of this cover is used as the range of rotation of the fan. However, the cover may be omitted. In addition, in a configuration in which the fan (rotating range) is covered from the outer peripheral side with a cover as in the embodiment, the air from the fan (rotating range) is sent forward (the area facing the compressor), is restricted from being delivered in the radial direction by the cover. On the other hand, if the cover is omitted, the air from the fan (rotating range) is basically sent forward (opposing area), but the diameter of the fan (rotating range) is increased to some extent. will be sent in the direction In this case, the air sent in the radial direction from the fan can move directly to the first region without passing through the opposing region. By arranging the capacitor so as to approach from the outer peripheral side, the movement of the air radially sent from the fan to the first region can be favorably inhibited by the capacitor.
(8) In the embodiment, a refrigerant pipe is installed in the evaporator via a refrigerant pipe as a second obstruction means that is positioned above the opposed area of the fan and the compressor in the machine room and obstructs the movement of air upward from the opposed area. Although the connecting expansion valve is used, another member (for example, a dedicated plate-like member or the like) may be used as the blocking means.
(9) Although the expansion valve with insulation is used in the embodiment, the expansion valve without insulation may be used as the second obstruction means.

12 box, 14 storage room, 16 machine room, 28 rear panel (backboard),
32 right side panel (side plate), 51 intake port, 52 exhaust port,
55a opposing region, 57 second region (path), 70 capacitor (inhibition means),
CM compressor, EP evaporator, EV expansion valve, F fan, P refrigerant pipe

Claims (3)

A machine room (16) provided on one side inside the box body (12) constituting the outer shell to accommodate the compressor (CM) and the fan (F), and a back plate (16) forming the machine room (16). 28), an intake port (51) through which outside air is introduced into the machine room (16) by the operation of the fan (F), and a side plate (32) forming the machine room (16). An exhaust port (52) for discharging air in the machine room (16) to the outside by operation of the fan (F) is provided, and the air outlet (52) is provided on the side opposite to the intake port (51) with the fan (F) interposed therebetween. In a refrigerated showcase in which a compressor (CM) is arranged,
In a space (55) surrounding the compressor (CM) formed in the machine room (16) so as to communicate with the exhaust port (52), the delivery side of the fan (F) and the exhaust port (52) ) from the exhaust port (52) in the surrounding space (55) by obstructing the flow of air from the delivery side of the fan (F) toward the position of the exhaust port (52). A refrigerating showcase, characterized in that an inhibition means (70) for guiding to a path (57) on the side of separation is provided. 2. The refrigerated showcase according to claim 1, wherein said inhibiting means (70) is a capacitor electrically connected to a driving source of said compressor (CM). An expansion valve (EV) connected via a refrigerant pipe (P) to an evaporator (EP) that cools a storage room (14) in which articles are cooled and stored is connected to the fan (F) and the fan (F) in the machine room (16). 3. The refrigerating showcase according to claim 1 or 2, wherein the refrigerating showcase is arranged above the area (55a) facing the compressor (CM).

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