JP2008101814A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a condenser which attains large heat release with a compact, silent and dust-resistant structure. <P>SOLUTION: The condenser 1 is constituted by vertically and spirally winding a heat conductive thin plate around a metallic pipe 1a, and looping the pipe substantially cylindrically, and adapted to introduce the outside air for radiation by setting a blower in the vicinity of a downstream opening thereof. The necessary length is shortened since it has extremely high radiation efficiency. The condenser is resistant to dust since the whole circumferential part forms a suction port. Performance deterioration by clogging is hardly caused even by long-term use, therefore, and stable performances is ensured. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator having a refrigeration cycle such as a condenser that is forcibly cooled.

  In recent refrigerators, condensers, compressors, and other devices constituting a refrigeration cycle are forced to be cooled by a blower as the size increases, and these devices are formed at the lower rear of the refrigerator body. It is configured to be installed in the machine room. Dust and the like entering the machine room are prevented by attaching a dustproof net or the like at the air inlet to the machine room (see, for example, Patent Document 1).

  A conventional refrigerator of this type will be described with reference to FIG. FIG. 6 is a sectional view of a refrigerator air passage of a conventional refrigerator. In FIG. 6, 101 is a refrigerator body, 102 is a storage room, 103 is a machine room partitioned at the lower rear of the refrigerator body 101, 104 is a compressor, 105 is a condenser, 106 is a blower, and 107 is a front surface of the machine room 103. This is an air intake port attached to the opening. Reference numeral 108 denotes a dustproof net that prevents intrusion of dust and the like.

With the above configuration, the dust that has entered the machine chamber 103 from the air intake 107 is blocked by the dust-proof net 108 and prevents the dust from adhering to the condenser 105.
Japanese Patent Laid-Open No. 4-190073

  In the conventional refrigerator, from the viewpoint of energy saving, it is necessary to further improve the efficiency of the cooling system. For that purpose, it is necessary to improve the heat exchange property of the condenser 105, and the amount of air passing through the condenser 105 is increased. Must.

  However, in order to prevent the condenser 105 from being clogged by dust or the like and deteriorating the heat exchanging property, the dustproof net 108 is provided, so that the heat radiation performance is likely to be lowered due to the occurrence of the clogging phenomenon due to dust. There was a point.

  Further, it is necessary to efficiently dissipate heat in a limited space of the machine room 3, and compactness is required. In addition to the compressor 104, the blower 106 and the condenser 105 are vibration sources and their transmission systems, and if they are not firmly fixed to the mounting plate, they are noise sources.

  The present invention solves the above-described problems, and not only effectively utilizes the space of the machine room, but also hardly deteriorates performance against dust, and maximizes the heat exchange efficiency of the condenser. The purpose is to provide a refrigerator that can be used.

  In order to achieve the above object, in the refrigerator of the present invention, a plurality of substantially cylindrical shapes in which a continuous strip-shaped thin plate is wound in a heat contact manner in a spiral manner on a metal tube. A blower and blades are installed in the vicinity of the downstream opening of the condenser air passage formed by looping. Further, the upstream opening is disposed close to the end surface of the machine room and is installed so as to suck air from the substantially cylindrical circumferential surface.

  As a result, the efficiency of heat exchange with the outside air can be improved, the required length of the heat radiating tube can be shortened, the design can be made compact, and the weight can be reduced.

  In addition, since the entire surface in the circumferential direction becomes an air suction opening and a sufficiently large suction area can be secured, performance deterioration due to accumulation of dust during long-term use is unlikely to occur, and stable performance is guaranteed.

  In addition, since the tip of the heat sink of the looped condenser is fixed in contact with the adjacent pipe shell, the heat sink does not rub against each other even if vibrations are transmitted from the compressor, etc. Absent.

  Further, by inserting a vibration isolating material as a buffer material between the condenser and the mounting plate, resonance does not occur even if vibration is transmitted from the compressor or the like and transmitted to the radiator.

  According to the refrigerator of the present invention, the condenser looped in a substantially cylindrical shape is disposed on the mounting plate that forms the machine room partitioned at the lower rear side of the refrigerator body, and the upstream opening is close to the end face of the machine room. Since it is installed so that air is sucked in from the substantially cylindrical circumferential surface, the entire circumferential surface becomes an air suction opening, and a large suction area can be secured, so it is clogged against dust. It is difficult to prevent deterioration of heat exchange properties due to the long-term use of the condenser.

  Furthermore, since it is not necessary to provide an element for air path resistance such as a dustproof net, the air path resistance is drastically reduced, a large amount of air passing through the condenser can be obtained, and heat exchange on the condenser surface is promoted.

  Further, since it is looped in a cylindrical shape, it can exchange heat directly with the fresh air sucked in, so the heat exchange efficiency is increased. In addition, since the heat exchange capacity can be varied by increasing or decreasing the number of loops, production facilities and the like can be shared and can be produced at low cost.

  According to the first aspect of the present invention, a condenser, a blade, a motor, an air blower composed of an orifice and a compressor are arranged in order from the upstream of the wind flow in a machine room formed at the lower rear of the refrigerator main body, and The condenser has a mounting plate for mounting a condenser, a blower and a compressor, and the condenser is brought into thermal contact with the metal pipe in the form of a continuous belt and spirally wound around the pipe in a spiral shape. A refrigerator in which the tube is bent into a substantially cylindrical shape a plurality of times and spirally formed, and a blower is fixed in the vicinity of the downstream opening of the substantially cylindrical condenser.

  The invention according to claim 2 arranges a condenser, an air blower, and a compressor in order in a machine room formed at the lower rear of the refrigerator main body, and a placement plate for placing the condenser, the air blower, and the compressor. And the condenser is composed of a heat-dissipating heat plate spirally wound around the pipe in a continuous strip shape substantially perpendicular to the metal pipe, and the pipe is substantially cylindrical. A refrigerator that is formed by bending a plurality of times, has the width of the belt-like heat sink and the substantially cylindrical bending pitch of the pipe substantially equal, and is fixed by bringing the heat sinks of adjacent metal pipes into contact with each other. is there.

  A third aspect of the present invention is the refrigerator according to the first aspect of the present invention, wherein a blower is fixed to the inside of the downstream end of the substantially cylindrical condenser through a fixing member.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the fixing member is formed of a vibration absorbing material.

  According to a fifth aspect of the present invention, in the first aspect of the present invention, the upstream opening of the substantially cylindrical condenser is installed close to the end face of the machine room.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings.

  1 is a plan view of a machine room of a refrigerator / freezer, FIG. 2 is a cross-sectional view of a condenser taken along line AA in FIG. 1, and FIG. 3 is a view of a condenser taken along line B-B in FIG. FIG. 4 is a perspective sectional view of a condenser in a straight pipe state.

  In FIG. 1, the condenser 1 has a metal pipe 1 a and a heat-radiating plate 1 b spirally wound around the pipe 1 a as shown in FIG. 4 and has a diameter slightly larger than the diameter of the orifice 13 of the blower 5. Looped in a substantially cylindrical shape.

  2 is a refrigerator body formed by interposing a heat insulating material between the outer box and the inner box, 3 is a machine room formed at the lower rear of the refrigerator body 2, an outer box bottom plate 4, a mounting plate 7, and a machine room cover 8 and a refrigerator main body outer box 17 form a space. Further, the condenser 1, the blower 5, and the compressor 6 are sequentially arranged on the mounting plate 7 from the upstream of the wind flow. The condenser 1 is composed of a heat-radiating plate 1b spirally wound around the tube in a continuous strip shape substantially perpendicular to the metal tube 1a, and the tube 1a is formed in a substantially cylindrical shape. The blower 5 is fixed in the vicinity of the downstream opening of the substantially cylindrical condenser by bending a plurality of times.

  Further, a front air intake 9 provided in the machine room cover 8 and the outer box bottom plate 4 of the refrigerator main body 2 is provided. Reference numeral 10 denotes a plurality of slit-like rear air intakes provided in the machine room cover 8, and 11 denotes an air discharge port provided on the downstream side of the machine room cover 8.

  12 is an orifice of the blower 5, and 13 is a blade of the blower 5, and is installed in the vicinity of the opening on the downstream side of the condenser 1. On the other hand, the opening on the upstream side is installed close to the end face of the machine room 3. Further, 14 is an inner box, 15 is a heat insulating material, 16 is a door, and an arrow in the figure indicates the direction of air convection.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated. The cooling air taken in by the blower 5 from the front air intake 9 and the rear air intake 10 first passes through the condenser 1 and is blown from the blades 13 of the blower 5 toward the compressor 6. The introduced cooling air exchanges heat with the condenser 1, cools the compressor 6, and is discharged from the air discharge port 11.

  As described above, since the condenser 1 is arranged in a substantially cylindrical shape upstream of the blower 5, the entire outer periphery of the cylindrical shape becomes an opening, so that the suction area is greatly increased, and the performance is deteriorated by dust. Heat generation efficiency is improved because it is difficult to occur and fresh air of the outside air directly exchanges heat with the condenser 1.

  Furthermore, since no dust-proof net or the like is installed, the wind path resistance on the upstream side of the condenser 1 is drastically reduced, and a large amount of air passing through the condenser 1 can be obtained, and the heat exchange rate on the surface of the condenser 1 is also promoted. . As a result, downsizing of the blower and downsizing of the heat exchanger can be realized.

(Embodiment 2)
This will be described with reference to FIGS. FIG. 5 is an enlarged view of the refrigerator condenser according to Embodiment 2 of the present invention. In the present invention, for the purpose of further reducing the resonance with respect to noise caused by vibration, the spiral heat sink 1b wound around the adjacent pipe 1a of the condenser 1 formed by bending into a cylindrical shape is provided. It is fixed so that it contacts completely. The flow of wind is the same as in the first embodiment.

  In this case, the cooling air taken in by the blower 5 from the front air intake 9 and the rear air intake 10 first passes through the condenser 1. At this time, the cooling air passes between the heat radiating plate 1b and the pipe 1a of the condenser 1, and heat is sequentially exchanged between the cooling air and the heat radiating plate 1b by the cooling air sucked by the blades 13. Thereafter, the compressor 6 is cooled and discharged from the air discharge port 11.

  As described above, when the blades 13 are arranged on the downstream side of the condenser 1 that is looped in a cylindrical shape, depending on the space between the compressor 6 and the blades 13 in the machine room 3 or a refrigerator is required. Depending on the heat dissipation capability, the heat dissipation capability can be adjusted by the number of loops of the condenser 1. Furthermore, it is not necessary to manufacture the condenser 1 by a dedicated bending according to the model of the refrigerator, and the condenser 1 can be shared at low cost.

(Embodiment 3)
This will be described with reference to FIGS. As shown in the figure, the vibration is transmitted to the mounting plate 7 in response to the vibration of the compressor 6, and the condenser 1 disposed thereon is likely to vibrate. Therefore, it is installed between the condenser 1 and the mounting plate 7 by a fixing member 21 that also serves as a vibration buffer. As a result, vibration can be suppressed and noise accompanying the vibration can be suppressed.

  As described above, the refrigerator according to the present invention realizes compact, silent, and highly efficient heat dissipation, and this technology is not limited to the refrigerator, and vending machines such as canned beverages that require cooling, It can also be applied to applications such as freezing and refrigeration showcases and condensing units that require compactness.

The top view of the machine room of the refrigerator in Embodiment 1, 2, 3 of this invention 1 is a cross-sectional view taken along line AA in FIG. BB perspective sectional view of FIG. 1 in Embodiment 1 of the present invention The perspective view of the straight pipe | tube state of the condenser in Embodiment 1 of this invention The enlarged view of the condenser of the refrigerator in Embodiment 2 of this invention Refrigerator air passage cross-sectional view of a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Condenser 1a Tube 1b Heat sink 2 Refrigerator main body 3 Machine room 4 Outer box bottom plate 5 Blower 6 Compressor 7 Mounting plate 8 Machine room cover 12 Orifice 13 Blade

Claims (5)

  A condenser, a fan, a motor, and an air blower composed of an orifice and a compressor are arranged in order from the upstream of the wind flow in a machine room formed at the lower rear of the refrigerator main body, and the condenser, the air blower, and the compressor are mounted. The condenser is composed of a heat-dissipating plate spirally wound around the tube in a continuous strip shape substantially perpendicular to a metal tube, and the A refrigerator in which a tube is bent into a substantially cylindrical shape a plurality of times and formed in a spiral shape, and a blower is fixed in the vicinity of the downstream opening of the substantially cylindrical condenser.   A condenser, a blower, and a compressor are arranged in this order in a machine room formed at the lower rear of the refrigerator main body, and have a mounting plate for placing the condenser, the blower, and the compressor, and the condenser is a metal It is composed of a heat-dissipating plate spirally wound around the tube in a continuous strip shape substantially perpendicular to the tube made of the tube, and is formed by bending the tube into a substantially cylindrical shape a plurality of times. A refrigerator in which the width dimension of the heat sink is substantially equal to the dimension of the substantially cylindrical bending pitch of the pipe, and the heat sinks of adjacent metal pipes are fixed in contact with each other.   The refrigerator according to claim 1, wherein a blower is fixed to the inside of the downstream end of the air passage of the substantially cylindrical condenser, and is fixed to the mounting plate via a fixing member.   The refrigerator according to claim 1, wherein the fixing member is made of a vibration absorbing material.   The refrigerator according to claim 1, wherein an upstream opening of the substantially cylindrical condenser is installed close to an end surface of the machine room.

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