JPH06147727A - Method and structure for intake/discharge of air in device equipped with refrigeration mechanism - Google Patents

Abstract

PURPOSE:To make a refrigeration mechanism operate efficiently even when the outdoor air temperature changes. CONSTITUTION:In a front panel 22 which covers the front side of a machine chamber 14 an intake port 28 and a discharge port 30 for air are opened the one at the left and the other at the right and adjacently to each other. The intake port 28 and the discharge port 30 have the same measurement at the openings. At an inward position of each of the intake port 28 and the discharge port 30 a third louver 36 having slats 36b sloping downward at a required angle is set. At an outward position of the intake port 28 a first louver 32 is set, which is fitted with slats 32b looking askance in a manner of separating from the discharge port 30 with respect to a forward-looking direction. At an outward position of the discharge port 30 a second louver 36 is set, which is fitted with slats 34b looking askance in a manner of separating from the intake port 28 with respect to a forward-looking direction. The positions at which the first louver 32 and the second louver 36 are set can be modified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake / exhaust method for an apparatus having a refrigerating mechanism and its structure. More specifically, when the outside air temperature is high, the air that has been sucked into the apparatus body and whose temperature has risen is regenerated. Intake / exhaust method and structure for avoiding suction and positively re-sucking air whose temperature has risen when outside air temperature is low to enable efficient operation of refrigeration mechanism and structure thereof Is.

[0002]

2. Description of the Related Art An automatic ice maker having a freezing mechanism and an ice making mechanism inside a casing and configured to produce a large number of ice cubes and other ice blocks in an ice making chamber cooled by the freezing mechanism is used in a coffee shop, a restaurant or a kitchen. It is suitable for use in facilities. In the automatic ice maker, as shown in FIG. 5, a machine room 14 is defined below the inside of the ice maker body 10 having a substantially box shape as a whole, and the freezing mechanism 12 is housed in the machine room 14. This refrigeration mechanism 12 is configured by connecting various members such as a compressor 16, a condenser 18, a capillary tube, an evaporator, and the like in a tube body, and the evaporator is disposed in an ice making chamber of an ice making mechanism arranged above the inside of the main body. Then, the ice making chamber is cooled to below freezing. A fin-and-tube type is generally used as the condenser 18, and a cooling fan 20 provided in the machine room 14 is operated to perform forced air cooling of heat generating portions such as the condenser 18 and the compressor 16. Has been done.

In the ice maker 10 having the air-cooled condenser 18 described above, as shown in FIG. 5, the air intake port is generally located in the front panel 22 defining the machine room 14 at a position facing the air intake side of the cooling fan 20. A suction louver 24 that functions as an air outlet is disposed, and an exhaust louver 26 that functions as an air outlet is disposed at a position facing the air blowing side of the cooling fan 20. Then, as shown in FIG. 6, the air sucked from the suction louver 24 by the rotation of the cooling fan 20 comes into contact with the condenser 18 to cool it, and then is discharged to the outside from the discharge louver 26 as warm air. It

[0004]

The suction louver 24 is provided.
As shown in FIG. 5, the discharging louver 26 is configured by arranging a plurality of slats 24a, 26a inclined downward in parallel at a predetermined interval. This is to prevent water flowing down the front panel 22 from entering the machine room 14 when water is used to clean the top plate of the ice maker. In this case, the slats 24
Since a and 26a are inclined downward, as shown in FIG.
A part of the warm air that has contacted the condenser 18 and exchanged heat is discharged from the discharge louver 26 and then sucked into the machine chamber 14 again via the suction louver 24, which is a so-called short cycle phenomenon. The condenser 18 could not be cooled efficiently, resulting in a decrease in heat exchange efficiency and a failure due to overheating or the like. Further, it is pointed out that the deterioration of the lubricating oil of the motors arranged in the machine room 14 is accelerated, resulting in frequent failure of each device and shortening of the machine life.

At a time when the outside air temperature is low such as winter (for example, 1 ° C. to 10 ° C.), the condensing pressure in the condenser 18 is lowered to collect the refrigerant liquid, and the ice making operation is completed to remove the ice. At the time of shifting to the operation, the refrigerant liquid may flow into the evaporator, and the amount of hot gas flowing may decrease, so that the defrosting effect may decrease. Further, the pressure difference between the discharge and suction of the compressor is reduced due to the decrease in the condensation pressure, and it is difficult for hot gas to flow, and it takes time to remove ice. And in this case, as the ice making capacity decreases,
It was supposed that ice blocks would not fall smoothly from the ice making room and deformed ice would be generated.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in the above-mentioned prior art, and it is an object of the present invention to solve the above-mentioned drawbacks efficiently. It is an object of the present invention to provide an intake / exhaust method and a structure thereof capable of performing stable operation.

[0007]

In order to overcome the above-mentioned problems and to achieve the intended purpose, the method of intake and exhaust of an apparatus provided with a refrigerating mechanism according to the present invention is a machine defined inside the apparatus body. The room is equipped with a refrigeration mechanism, and the rotation of the fan installed inside the machine room sucks external air through the suction port opened in the main unit to cool the heat generating part of the refrigeration mechanism and raise the temperature with heat exchange. In the device according to the configuration in which the internal air is discharged through the discharge port provided adjacent to the suction port and opened in the main body, a plurality of slats are provided inside the frame-shaped main body at both the suction port and the discharge port. When the ventilation louvers are provided so as to be inclined in the adjacent direction, and when the outside air temperature is high, the slats in the ventilation louvers of the suction port and the ventilation louvers of the discharge port are mutually opposed toward the front side. By tilting in the direction away from , Prevents re-suction of air exhausted from the exhaust port, and when the outside air temperature is low, the slats in the ventilation louver of the intake port and the ventilation louvers of the exhaust port face each other toward the front side. It is characterized in that the air exhausted from the exhaust port is positively re-sucked by inclining in the direction.

Further, an intake / exhaust device for an apparatus having a refrigerating mechanism according to another invention of the present application in order to preferably carry out the above-described method is a refrigerating mechanism in a machine room defined inside the apparatus body (10). The external air is sucked through the suction port provided in the main body by the rotation of the fan disposed inside the machine room to air-cool the heat generating portion of the refrigeration mechanism, and the internal air whose temperature has risen due to heat exchange is An apparatus according to a configuration for discharging through a discharge opening opened in the main body adjacent to the suction opening, comprising a frame-shaped main body detachably insertable into the suction opening or the discharge opening,
When the main body is fitted into the suction port, a plurality of slats formed inside are inclined to the front side in a direction away from the discharge port, and a ventilation louver, and detachably attached to the discharge port or the suction port. With a frame-shaped main body that can be inserted, and when the main body is inserted into the discharge port, a plurality of slats formed inside the ventilation louver are inclined toward the front side in a direction away from the suction port. By replacing the ventilation louver fitted in the suction port with the ventilation louver fitted in the discharge port, the suction direction of the external air and the discharge direction of the heat-exchanged internal air can be changed. It is characterized by being configured.

[0009]

EXAMPLES Next, the intake / exhaust method of an apparatus equipped with a refrigerating mechanism according to the present invention will be described below with reference to preferred examples in relation to the structure capable of suitably implementing the method. The same members as those described in the related art with reference to FIGS. 5 and 6 are designated by the same reference numerals.

FIG. 1 is a perspective view showing a main part of an automatic ice maker in which an intake / exhaust structure according to an embodiment is adopted, in which a front surface of a machine room 14 defined by an ice maker body 10 is covered. The front panel 22 is provided with a rectangular suction port 28 at a position facing the air suction side of the cooling fan 20, and a rectangular shape is provided at a position adjacent to the suction port 28 and facing the air blowing side of the cooling fan 20. A shaped outlet 30 is opened.
The suction port 28 and the discharge port 30 are set to have the same opening size, and three types of louvers 32, 34, 36 for ventilation described later are provided.
Are configured to be detachably attached in a required combination. As shown in FIG. 1, a regulating portion 28a which protrudes inward by a predetermined dimension is integrally formed at the inner opening edge portion of the suction port 28, and the louver 36 is positioned by the regulating portion 28a. There is. Similarly, a regulation portion 30a is also integrally formed on the inner opening edge portion of the discharge port 30, and the louver 36 is positioned by the regulation portion 30a. Further, as shown in FIGS. 2 and 3, the depth dimension from the front end of the opening of the suction port 28 and the discharge port 30 to the restricting portions 28a, 30a is two louvers 32, 36 (34, 36).
Is set to be approximately the same as the thickness dimension of the overlap.

The first louver 32 shown in FIG.
Alternatively, the main body 32a is formed of a rectangular frame body that can be tightly inserted into the discharge port 30, and a plurality of slats 32b are installed in parallel between the upper and lower plates of the main body 32a at a predetermined interval. The slats 32b are attached to the main body 32.
When a is fitted into the suction port 28, as shown in FIG. 3, it is set to incline toward the front side in a direction away from the discharge port 30. The second louver 34 is composed of a main body 34a made of a frame having the same standard as the first louver 32, and a plurality of slats 34b provided in parallel between the upper and lower plates of the main body 34a at predetermined intervals. The slat 34b is set to incline toward the front side when the main body 34a is fitted into the discharge port 30 and away from the suction port 28, as shown in FIG. That is, as shown in FIG. 3, when the first louver 32 is attached to the suction port 28 and the second louver 34 is attached to the discharge port 30, the slats 32b and 34b of the louvers 32 and 34 are attached.
Are directed in directions away from each other toward the front surface side, and it is possible to prevent re-intake from the suction port 28 of the warm air that has been heat-exchanged in the machine chamber 14 and discharged from the discharge port 30.

Further, the first louver 32 and the second louver 3
4, the second louver 3 can be attached to either the suction port 28 or the discharge port 30, as shown in FIG.
4 can be attached to the suction port 28 and the first louver 32 can be attached to the discharge port 30. In this case, the slats 34b, 32b are directed toward the front side so that the warm air exhausted from the exhaust port 30 by heat exchange in the machine room 14 is directed to the intake port 28. It is configured so that it can be positively re-inhaled via the.

A third louver 36 is detachably attached to the suction port 28 and the discharge port 30 on the back side of the first louver 32 and the second louver 34 (on the side of the machine chamber 14). As shown in FIGS. 1 and 2, the third louver 36 includes a main body 36a formed of a rectangular frame body that can be tightly inserted into the suction port 28 (exhaust port 30), and a space between the left and right plates of the main body 36a. And a plurality of slats 36b that are installed in parallel at predetermined intervals, and the slats 36b are set to incline downward at a required angle. The third louver 36 functions to prevent water flowing down the front panel 22 from flowing into the machine room 14 when the top plate of the ice maker is washed with water.

[0014]

Next, the operation of the intake / exhaust structure according to the embodiment will be described in relation to the intake / exhaust method.

(When the outside air temperature is high) For example, when the outside air temperature is high (for example, 20 ° C. to 35 ° C.) such as in the summer, the temperature of the air discharged from the machine room 14 during the operation of the automatic ice maker is increased. However, if a short cycle phenomenon occurs in which air is re-sucked from the suction port 28, the cooling capacity of the condenser 18 is insufficient and the ice making capacity is deteriorated, and the lubricating oil of the motor or the like is deteriorated. Therefore, in this case, as shown in FIG. 3, the regulating portion 28 is provided at the suction port 28 and the discharge port 30.
The first louver 32 is attached to the suction port 28 and the second louver 34 is attached to the discharge port 30 in a state where the third louvers 36 are respectively positioned via the a and 30a. Slats 32b, 34b of the first louver 32 and the second louver 34
Are directed in directions away from each other, so that when the air-cooling fan 20 is rotated, external air is sucked into the machine chamber 14 from the outside separated from the discharge port 30 via the first louver 32, and The internal air that has come into contact with the heat generating portion of the refrigeration mechanism 12 and has increased in temperature due to heat exchange is discharged toward the outside away from the suction port 28 via the second louver 34. That is, the short cycle phenomenon in which the hot air discharged from the second louver 34 is immediately sucked into the machine room 14 from the first louver 32 is avoided, and the intake / exhaust air is separated from the outside air at room temperature and the air whose temperature has risen. Is achieved. As a result, it is possible to prevent a decrease in the ice making capacity due to insufficient cooling of the condenser 18 and to avoid deterioration of lubricating oil such as a motor.

(When the outside air temperature is low) As described above, the condensation pressure of the condenser 18 decreases due to the decrease of the outside air temperature as in winter, and the flow rate of the hot gas decreases during the deicing operation. If you have a situation where it becomes difficult to flow,
As shown in FIG. 4, the second louver 34 is attached to the suction port 28 and the first louver 32 is attached to the discharge port 30.
In this case, since the slats 34b, 32b of the second louver 34 and the first louver 32 are oriented in the directions facing each other, if the air cooling fan 20 is rotated, the discharge port 30
External air is sucked into the machine chamber 14 from the front side of the first louver 34 through the second louver 34, and the internal air that is in contact with the heat generating portion of the refrigerating mechanism 12 and whose temperature is raised by heat exchange is the first louver 3
It is discharged toward the front surface side of the suction port 28 via 2. That is, the short cycle phenomenon in which the air whose temperature has risen is sucked into the machine room 14 is positively performed, and the ambient temperature of the condenser 18 is raised (raised to a temperature at which the condenser 18 can be operated efficiently). Therefore, it is possible to avoid the decrease in the condensation pressure of the condenser 18 caused by the low temperature and achieve the efficient operation of the condenser 18.
As a result, the time required for deicing can be shortened, and it is possible to prevent the ice blocks from being smoothly dropped from the ice making chamber to generate deformed ice.

In this embodiment, the case where the intake / exhaust structure is adopted in the automatic ice maker has been described, but the present invention is not limited to this, and the suction port and the discharge port opened in the main body of the apparatus are used. It can be widely used for all devices in which air flows in and out, and heat is exchanged in the main body. In addition, the first louver and the second louver according to the embodiment
It is also possible to change the suction direction of the external air and the discharge direction of the internal air by adopting a structure in which the louver can be attached to the suction port and the discharge port in the upside-down state.

[0018]

As described above, according to the intake / exhaust method and the structure thereof for the device having the refrigeration mechanism according to the present invention, the ventilation louver is always replaced according to the outside air temperature, so that the refrigeration mechanism is always operated. Efficient operation can be performed. That is, it is possible to effectively prevent the short cycle phenomenon when the outside air temperature is high, prevent the heat exchange efficiency from decreasing due to insufficient cooling of the condenser, and avoid the deterioration of the lubricating oil such as the motor. Further, it is possible to effectively prevent the deterioration of the capacity of the refrigeration mechanism caused by the lowering of the outside air temperature by positively performing the short cycle phenomenon, and achieve efficient operation of the refrigeration mechanism.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a lower portion of an automatic ice making machine adopting an intake / exhaust structure according to an embodiment.

FIG. 2 is a vertical sectional side view of an intake / exhaust structure according to an embodiment.

FIG. 3 is an explanatory diagram showing a state in which a short cycle phenomenon is avoided by the intake / exhaust structure according to the embodiment.

FIG. 4 is an explanatory diagram showing a state in which a short cycle phenomenon is caused by the intake / exhaust structure according to the embodiment.

FIG. 5 is a schematic perspective view showing a lower portion of an automatic ice making machine adopting a suction / exhaust structure according to a conventional technique.

6 is a cross-sectional plan view of the automatic ice maker shown in FIG. 5 at a position where an intake / exhaust structure is provided.

[Explanation of symbols]

10 ice machine body, 12 freezing mechanism, 14 machine room, 1
6 Compressor 18 Condenser, 20 Cooling fan, 28 Suction port, 30
Discharge port 32 First louver, 32a body, 32b slat 34 Second louver, 34a body, 34b slat 36 Third louver, 36b slat

Claims (3)

[Claims] 1. A machine room (1) defined inside an apparatus body (10).
4) is provided with a refrigeration mechanism (12), and a suction port (2) opened in the main body (10) by rotation of a fan (20) arranged inside the machine room (14).
External air is sucked in through the heat generation part (1) of the refrigeration mechanism (12).
6,18) is air-cooled, and the internal air whose temperature has risen due to heat exchange is discharged through an outlet (30) provided in the main body (10) adjacent to the inlet (28). In the suction port (28) and the discharge port (30), the frame-shaped body (32a, 34
In the case where the ventilation louver (32, 34) is installed inside a) so that multiple slats (32b, 34b) are tilted in the direction adjacent to both openings (28, 30) and the outside temperature is high. Is a louver for ventilation of the suction port (28).
The slats (32b, 34b) in the ventilation louvers (34) of the (32) and the outlet (30) are inclined toward the front side so that they are separated from each other, and the slats (32b, 34b) are discharged from the outlet (30). To prevent re-intake of air, and when the outside air temperature is low, the ventilation louver at the suction port (28).
(34) and the slat (34b, 32b) in the ventilation louver (32) of the discharge port (30) are inclined from the discharge port (30) by inclining toward each other toward the front side. A method for sucking and exhausting an apparatus having a refrigerating mechanism, characterized in that re-suction of air is positively performed. 2. A machine room (1) defined inside the apparatus body (10).
4) is provided with a refrigeration mechanism (12), and a suction port (2) opened in the main body (10) by rotation of a fan (20) arranged inside the machine room (14).
External air is sucked in through the heat generation part (1) of the refrigeration mechanism (12).
6,18) is air-cooled, and the internal air whose temperature has risen due to heat exchange is discharged through an outlet (30) provided in the main body (10) adjacent to the inlet (28). In, the suction port (28) or the discharge port (30) is provided with a frame-shaped main body (32a) that can be detachably inserted, when the main body (32a) is inserted into the suction port (28), The louvers (32) for ventilation, in which a plurality of slats (32b) formed on the front surface are inclined in a direction away from the discharge port (30) toward the front side, and are attached to and detached from the discharge port (30) or the suction port (28). A frame-shaped main body (34a) that can be freely inserted is provided, and when the main body (34a) is inserted into the discharge port (30), a plurality of slats (34b) formed inside face toward the front side. A ventilation louver (32) fitted to the suction port (28) and a ventilation louver (32) that is inclined in a direction away from the suction port (28).
By replacing the ventilation louver (34) fitted in (30) with the ventilation louver (34), it is possible to change the suction direction of the external air and the discharge direction of the heat-exchanged internal air. Intake / exhaust structure of the equipped device. 3. A ventilation louver (36) having a plurality of slats (36a) formed downward on the back side of the ventilation louver (32, 34) at the suction port (28) and the discharge port (30). An intake / exhaust structure for an apparatus provided with the refrigeration mechanism according to claim 2, wherein the intake / exhaust structure is provided respectively.