JP2000074545A - Gas discharging structure of machine room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a strength of an upper lid without changing a design of the upper lid or a casing and perform a positive discharging of air after heat exchanging operation through a discharging hole of the upper lid. SOLUTION: A condenser duct 20 is arranged at a machine chamber 10 defined in a casing 2a. A condenser 12 and a fan 16 are arranged within the condenser duct 20. The upper lid 3 fixed to the upper part of the casing 2a is provided with a plurality of gas discharging holes 3b formed at the positions corresponding to the machine chamber 10. The lower surface of the upper lid 3 is formed with fitting grooves 3a at locations enclosing the punched positions of all the gas discharging holes 3b. When the upper lid 3 is fixed to the casing 2a, the upper end of the condenser duct 20 is fitted to the fitting grooves 3a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust structure of a machine room, and more particularly, to an upper cover that covers an upper opening of the machine room after exchanging heat with a condenser provided in the machine room. The present invention relates to an exhaust structure of a machine room in which a condenser duct that guides to a formed exhaust hole supports the upper lid from below.

[0002]

2. Description of the Related Art In an ice maker for continuously producing ice blocks of a required shape, as shown in FIG. 7, a partition plate 26 is disposed inside a housing 2a which is open upward and forms a main body of the ice maker 2. A machine room 10 in which a refrigerating mechanism including the compressor 14 and the condenser 12 is disposed via the partition plate 26;
A storage room 11 in which the ice storage section 6 and the electrical box 8 are disposed is defined. The upper openings of the machine room 10 and the storage room 11 are covered by an upper cover 3 provided and supported by the housing 2a, and a plurality of exhaust holes (not shown) are provided at positions of the upper cover 3 corresponding to the machine room 10. ) Is drilled. And
The condenser 12 is cooled by air taken in from outside the machine by rotating a fan 16 disposed in the machine room 10, and the heated air after heat exchange with the condenser 12 is heated. The air is exhausted from the exhaust hole of the upper lid 3 to the outside of the machine.

[0003]

The upper lid 3 is provided with a housing 2
Since the outer peripheral portion is merely supported by the a, it is extremely weak against the stress in the vicinity of the central portion, and when the tableware or the like is erroneously placed on the upper lid 3, there is a problem of being deformed or broken. In order to avoid this, it is necessary to increase the thickness of the upper lid 3 to increase the strength. In this case, since the weight of the upper lid 3 is increased, design changes such as increasing the strength of the housing itself supporting the upper lid 3 are required. And the disadvantage that the production cost rises is pointed out.

Further, there is a gap between the partition plate 26 and the lower surface of the upper lid 3, and a part of the air whose temperature has increased due to heat exchange with the condenser 12 is not discharged from the exhaust hole. It is conceivable that the fluid flows into the storage chamber 11.
In this case, the ice making mechanism 4, the ice storage section 6, and the electrical box 8
And the like becomes high temperature, which causes a problem that the ice making capacity and the reliability of the ice making machine control are reduced. In order to improve the efficiency of discharging air after heat exchange and prevent the air from flowing into the storage chamber 11, it is effective to increase the number or the number of the exhaust holes. The strength is reduced. Therefore, in order to obtain a predetermined strength, it is necessary to take measures such as dividing the upper lid 3 or making the upper lid 3 thicker, and the manufacturing cost is increased due to an increase in the number of parts, and the above-mentioned accompanying increase in weight is required. The disadvantage that the same design change is required is pointed out.

[0005]

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 to solve the problem suitably. An object of the present invention is to provide an exhaust structure of a machine room in which the strength of an upper lid is increased and air after heat exchange can be reliably discharged from an exhaust hole of the upper lid.

[0006]

[Means for solving the problems] To overcome the above-mentioned problems,
In order to suitably achieve the intended purpose, the present invention arranges a condenser and a fan in a machine room defined inside a casing that opens upward, and includes a machine chamber in an upper lid that covers an upper opening of the casing. In an exhaust structure of a machine room, an exhaust hole is formed at a corresponding position, and the air after heat exchange in the condenser by the rotation of the fan is discharged from the exhaust hole to the outside of the machine. A condenser duct for guiding the exchanged air to the exhaust hole is provided in the machine room, and the condenser duct is configured to contact the lower surface of the upper lid to support the upper lid from below. And

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an exhaust structure of a machine room according to the present invention. Note that the same members that have already been described in the related art described with reference to FIG. 7 are denoted by the same reference numerals. FIG. 1 is a partially cutaway side view showing an ice making machine employing a machine room exhaust structure according to a preferred embodiment of the present invention. In the ice making machine 2 shown in the figure, a partition plate 26 is disposed inside a housing 2a that is opened upward, and the inside of the housing is partitioned into a front storage room 11 and a rear machine room 10 by the partition plate 26. Is done. The storage chamber 11 has an ice making mechanism 4 for producing ice blocks.
And an ice storage unit 6 for storing ice blocks produced by the ice making mechanism 4.
An electrical box 8 for controlling the ice making machine 2 is provided. The machine room 10 also includes a compressor 14 for compressing a refrigerant for cooling the ice making mechanism 4, a condenser 12 for cooling the compressed high-pressure refrigerant, a fan 16 for sending cooling air to the condenser 12, A motor 18 as a power source of the fan 16 is provided. Further, an upper cover 3 that covers the upper openings of the storage room 11 and the machine room 10 is detachably mounted on the upper part of the housing 2a, and a plurality of exhausts are provided at positions on the upper cover 3 that correspond to the machine room 10. A hole 3b is drilled (see FIG. 3).

A duct member 34, which is formed in a substantially U-shape in a plane, is detachably provided on the back surface (machine room side) of the partition plate 26, and a condenser is formed by the duct member 34 and the partition plate 26. A duct 20 is configured. As shown in FIG. 3, the duct member 34 includes a pair of side plates 2 separated in the width direction.
2, 22 and a rear plate 24 disposed on the rear side of both plates 22, 22, are formed in a U-shape in a plane, and the duct member 34 is connected to the partition plate 26 via both side plates 22, 22. And is configured to be detachably fixed. Each side plate 22 is provided at both ends in the front-rear direction.
A fixed portion 22b and a rear plate attaching portion 22c which are bent at substantially right angles to each other in the opposite direction are formed, and a flat rear plate 24 is provided between the two rear plate attaching portions 22c, 22c via a plurality of screws. And fixed. Further, both fixing portions 22b, 22b are disposed and fixed to the partition plate 26 via a plurality of bolts. And partition plate 2
An air passage V that opens up and down is defined in the condenser duct 20 that is formed by attaching the duct member 34 to the condenser 6, and the condenser 12 is disposed in the air passage V in an inclined posture. ing. Further, two fans 16 are arranged below the condenser duct 20, and each fan 16 is rotated by a motor 18 so that cooling air flows from the lower side to the upper side in the ventilation path V. You. Each of the two fans 16 faces the inside of the condenser duct 20, and is configured to efficiently contact the cooling air guided by the condenser duct 20 with the condenser 12. Therefore, the size of the fan can be reduced, and noise, vibration, power consumption, machine room space, and the like can be reduced.

The condenser 12 is formed by welding a fin tube 12a having a large number of heat radiating plates for condensing refrigerant in a state where the fin tube 12a is inserted into a tube hole 22a formed in each side plate 22 constituting the duct member 34. , Is fixed between the pair of side plates 22,22. As shown in FIG. 3, the tube hole 22a is moved from the front side (partition plate 26 side) to the rear side (the rear plate 2) from the upper side to the lower side.
The condenser 12 disposed on the pair of side plates 22, 22 is disposed so as to be inclined at a predetermined angle from the front side to the rear side from the upper side to the lower side. You. That is, the condenser 12 is arranged at a predetermined angle with respect to the flow direction of the cooling air (air flow) generated by the rotation of the fan 16, thereby providing a mechanical size.
(Front and rear dimensions) can be reduced.

A condenser upper cover 30 is provided at a position facing the ventilation path V on the back surface of the partition plate 26, and
A condenser lower cover 31 is disposed at an inner surface position of the rear plate 24 below the condenser upper cover 30. As shown in FIG. 2, the condenser 12 is supported in a state where the upper end face and the lower end face are respectively covered with a condenser upper cover 30 and a condenser lower cover 31 which are vertically separated from each other. The condenser 12 is vertically partitioned.

The partition plate 2 constituting the condenser duct 20
6, rear plate 24 and both side plates 22,22
The upper ends 26a, 24a, 22d, and 22d are set so that their heights exceed the upper end of the housing 2a in the ice making machine 2, and support the upper lid 3 attached to the upper part of the housing 2a. Is done. As shown in FIG. 4, the upper lid 3 has a strength that does not deform by covering the upper opening of the housing 2a (the storage room 11 and the machine room 10), and a material that has heat resistance to exhaust heat from the machine room 10, for example. ABS or the like is preferably used, but is not particularly limited thereto, and may be thin stainless steel or the like. In this case, a heat radiation effect by heat transfer of the upper lid 3 itself can be expected. A fitting groove 3a as a fitting portion is formed on a lower surface of the upper lid 3 so as to surround a position where all the exhaust holes 3b are formed and to correspond to upper end portions 26a, 24a, 22d and 22d of the condenser duct 20. Is formed, and the upper ends 26a, 24a, 22d, and 22d of the condenser duct 20 are fitted into the fitting grooves 3a when the upper lid 3 is attached to the housing 2a. That is, all the air whose temperature has increased due to heat exchange with the condenser 12 is discharged to the condenser duct 20.
And is discharged out of the machine through the exhaust hole 3b. In addition,
In the fitting groove 3a, a cushion material 3 such as urethane is used.
2, the fitting groove 3a and the condenser duct 20 are inserted.
Even if there is a dimensional error between the upper end portions 26a, 24a, 22d, and 22d, they are fitted in a sealed state to increase the degree of sealing. A fitting groove 3a formed in the upper lid 3
Also function as a reinforcing portion that increases the strength of the upper lid 3 against twisting in the front-rear and lateral directions and the like.

[0012]

Next, the operation of the exhaust structure of the machine room according to the embodiment will be described. When the operation of the ice making machine 2 is started, the compressor 14 operates under the control of the electrical box 8 to start compressing the refrigerant. The refrigerant which has been compressed and stored in the high pressure state is sufficiently cooled and condensed by the condenser 12. After the condensed refrigerant passes through a dryer (not shown) and an expansion valve, the ice making mechanism 4 is cooled by evaporating and exchanging heat with an evaporator (not shown) provided in the ice making mechanism 4,
Circulation returns to the compressor 14 again.

When the operation of the ice making machine 2 is started, the motor 18 is energized to rotate the fan 16 and the fan 1
The condenser 12 is cooled by the cooling air generated by the rotation of the condenser 6. At this time, the condenser 12 and the fan 16
Is installed in the condenser duct 20, all the cooling air is guided to the condenser 12 and is efficiently cooled. The air whose temperature has increased due to heat exchange with the condenser 12 is guided by the condenser duct 20 toward the exhaust hole 3b of the upper lid 3 and discharged outside the machine.

The partition plate 2 constituting the condenser duct 20
6, rear plate 24 and both side plates 22,22
The upper ends 26a, 24a, 22d, and 22d of FIG.
As shown in (2), the air after heat exchange with the condenser 12 does not leak out of the condenser duct 20 because it is fitted into the fitting groove 3a of the upper lid 3 via the cushion material 32. That is, the temperature-raised air does not flow into the storage chamber 11 to heat the ice making mechanism 4 and the electrical box 8,
It is possible to prevent the ice making capacity and the reliability of the ice making machine control from deteriorating. Further, since the upper lid 3 is supported from below by the housing 2a and the condenser duct 20, the strength at the central portion of the upper lid 3 is improved, and the upper lid 3 is not deformed or damaged even if tableware or the like is erroneously placed. . That is, since the strength of the upper lid 3 can be improved without changing the design of the upper lid 3 and the housing 2a, the manufacturing cost can be reduced. In addition, the cushioning material 32 is interposed between the upper end portions 26a, 24a, 22d, 22d of the condenser duct 20 and the fitting grooves 3a of the upper lid 3, thereby improving the sealing between the upper lid 3 and the condenser duct 20. In addition to the above, it is possible to disperse the stress applied to the upper lid 3 from above, thereby suitably preventing a heavy object from dropping or placing on the upper lid 3 and the ice making machine 2, causing damage, rattling, vibration during operation, and the like. . Further, the upper lid 3 can be protected from a load applied during shipping and transportation of the ice making machine 2.

[0015]

In the above embodiment, the fitting groove 3a is formed at a position corresponding to the upper lid 3, and the upper ends 26a, 24a, 22d, and 22d of the condenser duct 20 are fitted into the fitting groove 3a. Although the configuration is such that the heated air generated in the machine room 10 is efficiently discharged to the outside of the machine, the present invention is not limited to this. For example, as shown in FIG.
The upper end portions 26a, 24a, 22 of the partition plate 26, the rear plate 24, and the side plates 22, 22, respectively.
d and 22d are inclined at a predetermined angle inside the condenser duct 20 to be tapered. Further, a projecting piece 3c as a fitting portion is provided on the lower surface of the upper lid 3 so as to surround the positions where all the exhaust holes 3b are formed. That is, in this alternative embodiment,
When the upper lid 3 is attached to the housing 2a, the upper ends 26a, 24a, 22d, and 22 of the condenser duct 20 are provided inside the projection 3c.
d is fitted and all the air whose temperature has risen due to heat exchange with the condenser 12 is guided by the condenser duct 20 to the exhaust holes 3.
b to the outside of the machine. By making the upper end portions 26a, 24a, 22d, 22d of the condenser duct 20 tapered, the upper lid 3 easily fits into the condenser duct 20, and the heated air is discharged along the tapered exhaust holes 3b. To be guided efficiently. Further, upper ends 26a, 24a of the partition plate 26, the rear plate 24, and the both side plates 22, 22,
By providing the cushion material 32 on the outer surface of the upper lid 3 or on the outer surface of the upper lid 3, the sealing property between the condenser duct 20 and the upper lid 3 is improved. At the same time, an effect of preventing breakage of the upper lid 3, the condenser duct 20, and the like is exerted.

FIG. 6 shows still another embodiment, in which the upper end portions 26a, 24a, 22d of the partition plate 26, the rear plate 24, and the both side plates 22, 22, which constitute the condenser duct 20, respectively. , 22d, the height of the housing 2
It is set to be substantially the same as or slightly higher than the upper end of a. A contact portion 3d having a flat lower surface is formed on the lower surface of the upper lid 3 so as to surround the positions where all the exhaust holes 3b are formed. That is, in this still another embodiment, when the upper lid 3 is attached to the housing 2a, the upper end portions 26a, 24a, 22d, and 22d of the condenser duct 20 abut on the lower surface of the abutting portion 3d. All the air whose temperature has increased due to the heat exchange with the air 12 is guided by the condenser duct 20 and discharged out of the machine through the exhaust hole 3b. Further, since the upper lid 3 is supported from below by the housing 2a and the condenser duct 20, the strength at the central portion of the upper lid 3 is improved, and the upper lid 3 is not deformed or damaged even if tableware or the like is erroneously placed. . The upper ends 26a, 24a, 22d, 22d
The dimension of the lower surface of the contact portion 3d with which the upper portion 26a,
The thickness is set to be larger than the thickness of 24a, 22d, 22d. Therefore, due to a molding error of the condenser duct 20, etc.
The upper ends 26a, 24a, 22d, and 22d can always be brought into contact with the contact portion 3d even if the upper end of the condenser duct 20 provided in the housing 2a is different. Conversely, even if there is a molding error in the upper lid 3 itself, the upper ends 26a, 24a, 2
The contact portion 3d can contact the 2d and 22d.

The lower surface of the contact portion 3d or the upper end portions 26a, 24a, 22d, 22d of the condenser duct 20
By providing the cushioning material in the, the airtightness between the condenser duct 20 and the upper lid 3 can be improved, and the effect of preventing the upper lid 3 and the condenser duct 20 from being damaged can be achieved. The height of the upper end portions 26a, 24a, 22d, 22d of the condenser duct 20 may be lower than the upper end of the housing 2a. In this case, the contact portions 3d relatively protrude downward and come into contact with each other. It should be set as follows.

[0018]

[Modification] The inclination angle of the condenser is appropriately set according to the installation space of the condenser duct in the machine room, and is not limited to the angle shown in the embodiment. Further, the condenser and the duct member are integrally formed by welding, but may be installed in the condenser duct as a separate structure. Furthermore, the condenser duct of the embodiment is composed of a partition plate, a rear plate, and both side plates.
It is possible to adopt a configuration of being provided on the partition plate.

[0019]

As described above, according to the exhaust structure of the machine room according to the present invention, the upper cover for covering the upper opening of the housing is provided by the condenser duct for guiding the air after heat exchange in the condenser. Since it is configured to be supported from below, the strength of the upper lid is improved, and there is no possibility of deformation or breakage even if tableware or the like is accidentally placed. That is, since the strength of the upper lid can be improved without changing the design of the upper lid or the housing, the manufacturing cost can be reduced. In addition, since the upper end of the condenser duct is fitted to the fitting portion of the upper lid, the air that has exchanged heat with the condenser does not leak out of the condenser duct and does not affect other parts.

Since the condenser and the fan are arranged in the condenser duct, the condenser can be efficiently cooled by the cooling air generated by the rotation of the fan. Therefore,
The effect of reducing the size of the fan and reducing noise, vibration, power consumption, machine room space, and the like can be expected. In addition, since the fan is double-covered by the condenser duct and the housing, the soundproofing effect is high.

[Brief description of the drawings]

FIG. 1 is a side view, partially cut away, showing an ice making machine employing a machine room exhaust structure according to a preferred embodiment of the present invention.

FIG. 2 is a sectional side view of a main part showing an exhaust structure according to the embodiment.

FIG. 3 is a schematic perspective view showing an exhaust structure according to the embodiment.

FIG. 4 is a side sectional view showing a main part of an exhaust structure according to the embodiment.

FIG. 5 is a side sectional view showing a main part of an exhaust structure according to another embodiment.

FIG. 6 is a side sectional view showing a main part of an exhaust structure according to still another embodiment.

FIG. 7 is a side sectional view showing an ice maker according to the related art with a part cut away.

[Explanation of symbols]

2a housing, 3 top lid, 3a fitting groove (fitting part), 3b exhaust hole, 3c protruding piece (fitting part), 10 machine room, 12 condenser,
16 fan 20 condenser duct

Claims (3)

[Claims] 1. A condenser (12) and a fan (16) are arranged in a machine room (10) defined inside a housing (2a) opened upward, and an upper opening of the housing (2a) is provided. An exhaust hole (3b) is formed at a position corresponding to the machine room (10) in the upper lid (3) that covers the upper cover (3), and the air after heat exchange in the condenser (12) by the rotation of the fan (16) is exhausted. In the exhaust structure of the machine room, which is discharged from the hole (3b) to the outside of the machine, the air after heat exchange with the condenser (12) is discharged to the exhaust hole (3
A condenser duct (20) for guiding to (b) is disposed in the machine room (10), and the condenser duct (20) is in contact with the lower surface of the upper lid (3) to support the upper lid (3) from below. An exhaust structure for a machine room, characterized in that the exhaust structure is configured to perform the following. 2. An exhaust hole (3b) on a lower surface of the upper lid (3).
The exhaust structure for a machine room according to claim 1, wherein a fitting portion (3a, 3c) into which the entire periphery of the upper end of the condenser duct (20) is fitted is formed at a position surrounding the condenser duct. 3. The exhaust structure for a machine room according to claim 1, wherein the condenser (12) and the fan (16) are disposed in the condenser duct (20).