JP3363093B2 - Exhaust heat structure of condenser - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exhausting structure of a condenser, and more specifically, to a condenser exhausting system capable of efficiently cooling the condenser by controlling a flow of cooling air generated by rotation of a fan. It concerns the thermal structure.

[0002]

2. Description of the Related Art In a refrigerating mechanism used in an ice making machine or the like, as a condenser for cooling and liquefying a refrigerant compressed by a compressor, it is forcibly cooled by cooling air from a fan to exchange heat with the refrigerant. An air-cooled condenser is used.
This condenser generally has a problem that the larger the volume thereof, the larger the installation space becomes. Therefore, FIG. 8 and FIG.
, The condenser 12 constituting the refrigerating mechanism is arranged inside the condenser duct 20 for guiding the cooling air from the fan 16 rotated by the motor 18 so as to be inclined with respect to the flow direction of the cooling air. Therefore, a proposal has been made to reduce the installation space.

[0003]

The condenser 12 has only its end edge fixed to the condenser duct 20 by spot welding or the like, and the resistance at the connecting portion is small. Moreover, since the condenser 12 is inclined, the cooling air from the fan 16 is separated from the fan 16 by the upper end surface side (downstream side in the cooling air flow direction) as shown by the linear arrow in FIG. Flow through a large amount and pass through the low resistance connection portion. Therefore, the refrigerant in the condenser 12 cannot be sufficiently cooled and condensed, and the condensing ability is lowered. In order to deal with this, it is necessary to adopt a countermeasure such as enlarging the fan 16 to increase the air volume of the cooling air. In this case, however, the noise increases as the fan 16 increases in size. And the power consumption increases,
Further, it is pointed out that the installation place of the fan 16 becomes large.

The condenser duct 20 is constructed by disposing a planar U-shaped duct member 50 on a mounting plate 26 disposed inside an ice making machine or the like. Since 26 has a flat plate shape, the duct member 50 could not be easily positioned with respect to its mounting surface.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in the above-mentioned conventional technique, and is proposed in order to solve the above-mentioned drawbacks. The purpose of the present invention is to provide a condenser exhaust heat structure that can reduce the noise and power consumption while facilitating the miniaturization of the fan by increasing the condensation efficiency in the condenser, and can easily assemble the condenser duct. And

[0006]

[Means for Solving the Problems] Overcoming the above-mentioned problems,
In order to preferably achieve the intended purpose, the present invention provides a condenser that constitutes a refrigeration mechanism, and a condenser duct that supports the condenser inside and guides cooling air generated by rotation of a fan to the condenser. In the exhaust heat structure of the condenser, wherein the condenser is inclined with respect to the flow direction of the cooling air,
An end face on the downstream side in the flow direction of the cooling air in the condenser,
A shield covering the entire surface with a condenser cover attached to the condenser duct, and covering the condenser cover for a predetermined length with an exhaust surface on the side where the cooling air after heat exchange in the condenser is exhausted. It is characterized by having a section.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a heat exhaust structure for a condenser according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments. It should be noted that the same members as those already described in the conventional technique described with reference to FIGS. 8 and 9 are denoted by the same reference numerals. FIG. 1 is a cross-sectional view showing an ice making machine having a condenser according to an embodiment from a rear side with a part thereof cut away. Figure 2
FIG. 2 is a side view showing a part of the ice making machine shown in FIG.
FIG. 3 is a perspective view showing the entire condenser duct.

As shown in FIGS. 1 and 2, the ice making machine according to the embodiment has a machine room 10 in which a refrigerating mechanism including a condenser 12, a compressor 14, etc. is disposed on the inner rear side of a housing 9.
And an evaporator (not shown) in which the refrigerant drawn from the refrigeration mechanism circulates is arranged in an ice making mechanism (not shown).
The machine room 10 is separated from a room in which the ice making mechanism and other electrical components and ice storage parts are provided by a mounting plate 26 disposed inside the housing. On the back surface of the mounting plate 26, a duct member 34 formed in a substantially U shape in a plane is detachably arranged, and the duct member 34 and the mounting plate 26 constitute the condenser duct 20.

The duct member 34 includes a pair of side plates 22 and 22 spaced apart from each other in the width direction and both plates 22 and 22.
It is formed in a U-shape in a plane from a rear plate 24 disposed on the rear surface side, and the duct member 34 is configured to be detachably fixed to the mounting plate 26 via both side plates 22 and 22. It Each side plate 22 is formed with a fixing portion 22b and a rear plate mounting portion 22c, which are bent at substantially right angles in mutually opposite directions, at both ends in the front-rear direction, and between the rear plate mounting portions 22c, 22c. A flat plate-shaped rear plate 24 is arranged and fixed via a plurality of screws 24a. Also, both fixing parts 22b, 22b are
It is arranged and fixed to the mounting plate 26 through a plurality of bolts 28 (see FIG. 3). Then, the condenser duct 2 configured by attaching the duct member 34 to the attachment plate 26
An air passage V that opens vertically is defined at 0, and the condenser 12 is arranged in the air passage V in an inclined posture. Further, two fans 16 are provided below the condenser duct 20, and by rotating each fan 16 by a motor 18, cooling air flows in the ventilation passage V from the lower side to the upper side. It

The condenser 12 has a fin tube 12a having a large number of heat radiating plates for condensing the refrigerant, and a U bend 12b connecting the fin tubes 12a to each other at both ends.
Composed of and. As shown in FIG. 3, the condenser 12 includes a fin tube 12a inserted through a tube hole 22a formed in each side plate 22 constituting the duct member 34, and a U bend 12b from the outside of the side plate 22. By connecting, a pair of side plates 22,
It is fixed between 22. The tube hole 22a is shown in FIG.
As shown in, the holes are formed in an array that is inclined from the front side (mounting plate 26 side) to the rear side (rear surface plate 24 side) from the upper side to the lower side.
The condenser 12 arranged at 22 is arranged so as to incline from the front side to the rear side at a predetermined angle as it goes downward from above.

On the mounting plate 26, a condenser upper cover (condenser cover) that covers the upper end surface 36 on the upper side which is the downstream side in the flow direction of the cooling air from the fan 16 in the condenser 12.
30 are provided. This condenser top cover 30
Cover portion 30 having substantially the same shape as the upper end surface 36 of the condenser 12.
An exhaust portion is formed at the front end of c and is bent upward to be attached to the mounting plate 26, and at the rear end thereof is bent downward to exhaust the cooling air after heat exchange of the condenser 12. A shielding portion 30b is formed to cover the surface 38 for a required length (see FIG. 4). And the condenser upper cover 30
Covers the entire upper surface 36 and the upper portion of the exhaust surface 38 of the condenser 12 fixed between the side plates 22 and 22 with the covering portion 30c and the shielding portion 30b, so that cooling air can be efficiently supplied to the condenser 12. It works by passing through and improving the condensation capacity.

Here, regarding the length of the shielding portion 30b of the condenser upper cover 30, when the shielding portion 30b is completely eliminated as shown in FIG. There is no efficient cooling through. Further, when the length of the shielding portion 30b is longer than necessary and the fin tube 12a at the second stage or lower from the upper end is also covered as shown in FIG. 6 (b), the cooling air is stagnated inside the condenser 12. However, the efficient cooling effect cannot be obtained. On the other hand, as shown in FIG. 7 (a), the length of the shielding portion 30b is set such that the fin tube 12a at the uppermost end (the refrigerant inlet of the condenser 12) and the fin tube 12a at the second stage below the fin tube 12a.
It has been found that when the size is set so as to cover up to the vicinity of the middle of, the cooling is performed efficiently by the cooling air. In addition,
In addition to the above conditions, as shown in FIG. 7 (b), from the straight line L passing through the centers of the second and third fin tubes 12a, 12a connected by the U bend 12b, the shielding portion 3
It has been confirmed by experiments that when the end portion of 0b faces upward, an appropriate resistance occurs and the most efficient cooling is performed. Therefore, the length of the shielding portion 30b in the embodiment is the same as that of the fin tube 12a at the uppermost end and that of the fin tube 12a below the fin tube 12a.
The size is set so as to cover the vicinity of the middle of the fin tube 12a at the stage.

On the rear plate 24, the condenser 1
A condenser lower cover 32 that covers a lower end surface 40 that is the upstream side in the flow direction of the cooling air in 2 is provided. The condenser lower cover 32 is provided on the lower end surface 4 of the condenser 12.
An attachment portion 32b that bends downward is formed at the rear end of the covering portion 32a having substantially the same shape as that of 0, and the attachment portion 32b is fixed to a predetermined position of the front panel 24 by a method such as welding.
The condenser lower cover 32 serves to cover the lower end surface 40 of the condenser 12 fixed between the side plates 22 and 22 with the covering portion 32a and to support it from below. Further, the condenser lower cover 32 also plays a role of a reinforcing material for the condenser duct 20, so as to prevent chattering, muffled noise, vibration and the like generated when cooling air passes through the condenser duct 20. Has become.

[0014]

Next, the operation of the heat exhaust structure of the condenser according to the embodiment will be described. The condenser 12 according to the present embodiment is
It is attached to the condenser duct 20 through the following manufacturing process. That is, as shown in FIG. 5A, first, the condenser upper cover 30 is attached to a desired position of the attachment plate 26. Also in FIG.
As shown in (b), after connecting both ends of each fin tube 12a in the condenser 12 to the corresponding tube holes 22a of the side plate 22, by welding the U bend 12b to the corresponding fin tube 12a from the outside, The side plates 22 and 22 are fixed to both sides of the condenser 12. Then, the side plate 22, 22, the rear plate mounting portion 22
By mounting the rear plate 24 between b and 22b, the duct member 34 including the condenser 12 arranged in an inclined manner is formed. In the state where the condenser 12 is attached to the duct member 34, the lower end surface 40 of the condenser 12 is covered with the condenser lower cover 32 arranged on the rear plate 24. Further, the fan 16 that sends the cooling air to the condenser 12 and the motor 18 that is the power source thereof are attached to a predetermined position below the duct member 34 by using, for example, bolts or welding.

As shown in FIG. 5C, the duct member 34 is preliminarily attached to the mounting plate 26 with the fixing portions 22b, 22b of the side plates 22, 22 facing the mounting plate 26. The condenser upper cover 30 is positioned so as to be located inside. Then, by fixing each fixing plate 22b to the mounting plate 26 with a bolt, the mounting plate 26 and the duct member 34 constitute the condenser duct 20, and the condenser 12 is inclined to the ventilation path V inside the duct 20. Will be placed. Further, in this state, the upper end surface 36 of the condenser 12 is covered with the covering portion 30c of the condenser upper cover 30, and the exhaust surface 38 of the condenser 12 is covered with the shielding portion 30 for a required length.
covered with b. That is, the ventilation passage V is vertically divided by the condenser 12 that is inclinedly arranged therein, and all the cooling air from the fan 16 passes through the condenser 12. When the condenser 12 is attached, the duct member 34 is positioned using the condenser upper cover 30 provided on the attachment plate 26, so that the attachment work is facilitated and the work time is shortened. Is possible. Further, since the condenser 12 is arranged so as to be inclined, the installation space is small and the ice making machine itself can be downsized.

When the operation of the ice making machine is started, the refrigerant compressed by the compressor 14 is heat-exchanged and cooled by the condenser 12. Then, the compressor 14 is used again for ice making cooling through a dryer and an expansion valve (not shown).
Repeat the cycle to return to. In the condenser 12,
Since the entire upper end surface 36 is covered with the condenser upper cover 30 and the exhaust surface 38 is also covered for a predetermined length, the cooling air from the fan 16 does not pass upward from the upper end surface side. Thus, it passes through the entire condenser 12 substantially uniformly. That is, the cooling of the refrigerant in the condenser 12 is efficiently performed, and a high condensing capacity is obtained.
In addition, since the cooling air from the fan 16 is used efficiently, it is possible to use a small fan 16 as a fan, which can reduce noise and power consumption and reduce the installation space. .

[0017]

[Modification] In the embodiment, the mounting portion and the shielding portion are bent and formed at both ends of the covering portion so that the cross-sectional shape of the condenser upper cover is substantially Z-shaped. The shape is not limited to this as long as it can cover a predetermined position above the exhaust surface of the container. The length dimension of the shielding portion can be appropriately changed according to various conditions such as fan capacity, fin tube disposition interval, condenser inclination angle, and the like. It is not necessary to have a dimension that covers the space between the fin tube and the second fin tube thereunder.

[0018]

As described above, according to the exhaust heat structure of the condenser according to the present invention, the entire end surface and the exhaust surface of the condenser on the downstream side in the flow direction of the cooling air have a predetermined length. Since it is configured to be covered with the cover, the cooling air can be efficiently used to cool the condenser, and a sufficient cooling capacity can be obtained by using a fan and a motor that are smaller than conventional ones. Moreover, noise, power consumption, and installation space can be reduced by downsizing the fan and the motor. Furthermore,
Since the heat dissipating fins that are easily deformed can be protected by the condenser cover, the heat dissipating fins can be prevented from being damaged. Further, the duct member and the condenser can be easily positioned with respect to the mounting plate by using the condenser cover arranged on the mounting plate, so that a reduction in the assembly process and working time can be expected.

[Brief description of drawings]

FIG. 1 is a rear view showing the inside by cutting out a part of an ice making machine according to an embodiment in which a heat exhausting structure for a condenser of the present invention is implemented.

FIG. 2 is a schematic side view showing the inside by cutting out a part of the ice making machine according to the embodiment.

FIG. 3 is a perspective view showing a condenser and a condenser duct according to an embodiment.

FIG. 4 is a side sectional view showing the condenser and the condenser duct according to the embodiment with one side plate removed.

FIG. 5 is an explanatory perspective view showing an assembling process of the condenser and the condenser duct according to the embodiment.

FIG. 6 is an explanatory diagram schematically showing the flow of cooling air when the length of the shielding portion according to the embodiment is changed.

FIG. 7 is an explanatory diagram showing a condenser upper cover in which the shielding unit according to the embodiment is set to have an optimum length.

FIG. 8 is a perspective view showing a condenser and a condenser duct according to a conventional technique.

FIG. 9 is a side sectional view showing a condenser and a condenser duct according to a conventional technique.

[Explanation of symbols]

12 condenser, 16 fan, 20 condenser duct, 26
Mounting plate 30 Condenser upper cover (condenser cover), 30b Shield, 34 Duct member 36 Upper end surface, 38 Exhaust surface

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-63-226572 (JP, A) JP-A-5-39976 (JP, A) JP-A-4-121218 (JP, A) Actual development Sho-57- 9082 (JP, U) Actually open 5-8369 (JP, U) Actually open 60-73084 (JP, U) Actually open 3-527 (JP, U) Actually open 59-13881 (JP, U) Actual Development Sho 53-80861 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F28F 9/22 F25B 39/04 F25D 19/00 530 F25D 19/00 550 F28F 9/24 F28D 1/47 F24F 13/02 F24F 5/00

Claims (2)

(57) [Claims] 1. A condenser (12) that constitutes a refrigeration mechanism, and a condenser that supports the condenser (12) inside and guides cooling air generated by rotation of a fan (16) to the condenser (12). Instrument duct (2
0), and the condenser (12) is an exhaust heat structure of the condenser arranged obliquely with respect to the flow direction of the cooling air, and the end face on the downstream side in the flow direction of the cooling air in the condenser (12). (3
6) is attached to the condenser duct (20), the condenser cover (3
In addition to covering the entire surface with (0), the condenser cover (30) covers the exhaust surface (38) on the side where the cooling air after heat exchange in the condenser (12) is exhausted for a predetermined length. An exhaust heat structure for a condenser, characterized in that a shielding part (30b) is provided. 2. The condenser duct (20) includes a mounting plate (26) and a duct member (34) having a U-shaped cross section, and the duct member (34) is attached to the mounting plate (26). The exhaust heat structure for a condenser according to claim 1, wherein the condenser heat exhaust structure is positioned so that the condenser cover (30) arranged on the mounting plate (26) faces inward.