JPH08145537A - Mounting tool for wire condenser of cooling apparatus - Google Patents

Abstract

PURPOSE: To provide a mounting tool for a wire condenser for use in a cooling apparatus in which there are eliminated noise and vibration produced from a refrigerator itself such as a compressor, and there are eliminated noise and vibration produced when the vibration resonates a wall and a cabinet, and further there is improved heat dissipation effect thereof. CONSTITUTION: An outer box 5 of a heat insulation box 3 is constructed with a vibration damping plate, and a machine chamber 4 is covered with the vibration damping plate and is closely sealed, which chamber is in turn mounted on a lower part of the heat insulation box 3. A mounting tool 12 is used for superimposing a main condenser 13 of a freezing cycle and a sub-condenser 14 of an oil cooler for cooling lubrication oil of a compressor 8 on the back surface of a cooling apparatus 1 including the oil cooler. The mounting tool comprises a vibrationproof member made of a vibration damping material and a support member mounted on the back surface of the cooling apparatus 1 with screws.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting for a wire condenser of a cooling device, and more particularly, to reduce noise and vibration, suppress resonance and resonance of walls and cabinets, and to install in bedrooms and the like. The present invention relates to a fitting for a wire condenser of a cooling device that provides comfort.

[0002]

2. Description of the Related Art Conventionally, in household, hotel, inn, and other refrigerators and commercial refrigerators, a heat-insulating wall constitutes a box-shaped body, and a machine room is constructed by contacting, for example, the lower part of the body. In addition, a compressor forming a part of the refrigeration cycle is installed in this machine room.

However, since the compressor is vibrated by driving the motor and the internal pressure is high,
Generates comparatively loud noise. In particular, since the machine room is communicated to the outside as described above, noise from the compressor (compressor motor rotation noise, refrigerating machine oil agitation noise, refrigerant noise, etc.
Resonance of the pipeline of the refrigerating cycle, etc.) is almost transmitted to the outside as it is, so that there is a problem that such noise is extremely annoying especially in refrigerators for homes, hotels, and inns.

On the other hand, since this compressor is usually driven by a motor, heat loss generated by the motor during cooling operation, heat generated by friction of mechanical parts, heat transferred from compressed refrigerant, etc. The compressor heats up.

If the temperature of the compressor becomes abnormally high due to such heat generation, there is a problem that seizure of mechanical parts, burnout of the motor windings, and the like occur, so that generally, the machine room is conventionally opened or compressed. To make the machine room communicate with the outside by providing holes in the stand where the machine is installed and providing slits in the cover that closes the machine room, and also to install a blower in the machine room to force outside air into the machine room. Was promoting heat dissipation of the compressor.

Therefore, for example, a compressor is covered with a soundproof case composed of a sound absorbing material and a radiation fin, and the soundproof case is used for soundproofing and heat dissipation (Japanese Utility Model Publication No. 47-16427), or a capillary material sufficiently filled with water. The same soundproofing and heat-dissipating effect can be exerted by covering the compressor with a heat-dissipating and soundproofing device (see Jpn. Sho 53-40724).
There is also a proposal to wrap a sound absorbing material composed of an elastic aggregate and a heat conductive sealer around the outer periphery of the compressor so that heat can be efficiently dissipated and noise can be reduced. (Jpn. Pat. Appln. KOKAI No. 1-13822).

However, in the above conventional soundproofing / heat radiation measures, the heat radiation area is limited because it is limited only to the periphery of the compressor, and therefore the ability to dissipate the heat generated from the compressor is also limited. There was a problem.

Further, the machine room may be covered with a closing member to be hermetically sealed, and the machine body may be heat-exchanged around the main body of the compressor and may be provided with a heat transfer member which extends outside the machine room and is cooled by outside air. 6-194027 gazette) or the machine room is covered with a sound insulation member to be hermetically sealed, and the heat receiving side of the thermosiphon is attached to the periphery of the compressor body in a heat exchange manner, and the heat radiating side of the thermosiphon is heat-resistant in the machine room. There is a proposal to attach to the conducting member by heat exchange (Japanese Patent Laid-Open No. 6-2
29660).

However, the noise of the refrigerator placed in the bedroom, the guest room of the hotel or the inn is caused by the noise of the refrigerator itself such as the vibration of the compressor, and the vibration of the refrigerator resonates or resonates with the wall or the like. Since there is noise that resonates and resonates in the cabinet in which is installed, there is a problem that the above soundproofing and heat dissipation measures have a limitation that the noise that resonates and resonates with the wall and the cabinet is insufficient.

The condenser part of the oil cooler for cooling the lubricating oil of the compressor of the refrigeration cycle and the condenser part of the compressor are integrated by a radiator and mounted on the outside of the storage body (Japanese Utility Model Publication No. 46-15713). ), A proposal for arranging a plurality of condensers on the back surface of the refrigerator body to increase the evaporation capacity during defrosting (Japanese Utility Model Publication No. 47-26942), and a holder for easily mounting the condenser on the back surface of the refrigerator body. There are proposals (Japanese Utility Model Publication No. 47-32688, Japanese Utility Model Publication No. 49-15982, and Japanese Utility Model Publication No. 50-40356), but none of them have both soundproofing and heat dissipation measures. There were problems that were insufficient to solve the above problems.

On the other hand, what has been used as a refrigerant for a refrigerator is conventionally dichlorodifluoromethane (R-12).
R-502 consisting of R-12 of azeotropic mixed refrigerant and 1,1-difluoroethane (R-152a) is suitable for ordinary refrigeration equipment, and refrigeration using refrigeration oil such as mineral oil or alkylbenzene oil. The cycle has reached high quality levels such as reliability and durability.

However, due to the high ozone depletion potential, each of the above refrigerants destroys the ozone layer when it reaches the ozone layer above the earth by being released into the atmosphere. The destruction of the ozone layer is caused by chlorine groups (Cl) in the refrigerant. Therefore, a refrigerant with a low chlorine group content, such as chlorodifluoromethane (HCFC-22,
R-22), a refrigerant containing no chlorine group, such as difluoromethane (HFC-32, R-32), pentafluoroethane (HFC-125, R-125), 1,1,1,2
-Tetrafluoroethane (HFC-134a, R-13
4a), or mixtures thereof, are considered as alternative refrigerants for these. Refrigerating machine oils used for these HFC-based refrigerants include mineral oils having a low compatibility with HFC-based refrigerants, alkylbenzene-based oils, etc., or ester-based lubricating oils, ether-based lubricating oils compatible with a HFC-based refrigerant,
These include mixed oils. Using these HFC-based refrigerants or HC-based refrigerants (propane, butane, pentane, etc.) as the main refrigerants, the development of a cooling device that effectively solves the noise problem and improves the heat dissipation effect is strong. Was wanted.

[0013]

The vibration of the compressor is transmitted to the outer box of the heat insulation box of the cooling device through the suction pipe and the attachment of the wire condenser of the oil cooler and the wire condenser of the refrigeration cycle, and the outer box vibrates. I have something to do. In order to suppress such vibration, there is a method of mounting the wire condenser by a mounting tool via a packing made of synthetic rubber or the like, but there are drawbacks that the mounting operation becomes complicated and the number of parts increases. There has been a strong demand for the development of a fixture that can mount the oil condenser wire condenser and the refrigeration cycle wire condenser on the outer box on the rear surface of the cooling device at the same time and can suppress the vibration. The object of the present invention was made to solve the problems of the prior art as described above, while effectively eliminating the noise generated from the refrigerator itself such as a compressor, vibration is resonant with the wall or cabinet, It is an object of the present invention to provide a fixture for a wire condenser of a cooling device, which eliminates noise caused by resonance and improves its heat dissipation effect.

[0014]

Means for Solving the Problems As a result of repeated research to solve the above-mentioned problems, the inventors of the present invention have fixed a vibration-proof member of a specific structure made of a material having a vibration-proof property and supporting / fixing it. It was found that the problem can be solved by fixing the heat exchange coils of the two wire condensers at one time by using a fixture composed of a support member for attaching to the back surface of the cooling device with a screw, and to complete the present invention. I arrived.

According to the first aspect of the present invention, the outer box of the heat insulating box of the cooling device having the refrigerating cycle in which the machine room is provided in the lower part of the heat insulating box having the opening / closing door at the opening is the damping plate. Make,
The machine room is covered with a damping plate to be hermetically closed, and an oil cooler for cooling the lubricating oil of the compressor of the refrigeration cycle is provided, and a wire condenser of the oil cooler is provided on the outer box on the back side of the heat insulating box. And a wire condenser of the refrigeration cycle, a wire condenser of a cooling device, wherein the wire condenser of the oil cooler is located inside, and the wire condenser of the refrigeration cycle is located outside. It is composed of a vibration isolating member having a semicircular cross section made of a vibration isolating material, and a supporting member that supports the vibration isolating member and is mounted on the outer box by a screw, and a wire condenser is provided on the circumference of the vibration isolating member. Is a fixture for a wire condenser of a cooling device, in which two grooves for inserting and fixing the heat exchange coil are provided in parallel.

According to a second aspect of the present invention, in the fitting for the wire condenser of the cooling device according to the first aspect, the damping plate is a damping steel plate.

According to a third aspect of the present invention, in the fitting for the wire condenser of the cooling device according to the first or second aspect, the outer box of the heat insulating box is formed by means other than welding. Is characterized in that.

According to a fourth aspect of the present invention, in the fitting for the wire condenser of the cooling device according to the first to third aspects, the oil cooler is provided between the compressor of the refrigeration cycle and the main condenser. It is characterized by being an oil cooler using the provided sub-condenser or an oil cooler using a thermosiphon.

According to a fifth aspect of the present invention, in the fitting for the wire condenser of the cooling device according to the first to fourth aspects, the machine chamber covered with the vibration damping plate is heat-insulated via a sealing material. It is characterized by being attached to the box body by screwing.

According to a sixth aspect of the present invention, in the fitting for the wire condenser of the cooling device according to the first to fifth aspects, the refrigerant is an HFC type refrigerant or an HFC type refrigerant and H.
It is characterized in that it is a refrigerant mainly composed of a C-based refrigerant.

[0021]

The attachment of the wire condenser of the cooling device of the present invention is
A machine room 4 is provided below the heat-insulating box 3 having an opening / closing door 2 at the opening.
Insulation box body 3 of the cooling device 1 having a refrigeration cycle provided with
The outer box 5 of the above is made of a damping plate, the machine room 4 is covered with the damping plate to be hermetically closed, and an insulating box body of a cooling device equipped with an oil cooler 18a for cooling the lubricating oil of the compressor 8 of the refrigeration cycle. The wire condenser (sub-condenser) 14 of the oil cooler 18a and the wire condenser (main condenser) 13 of the refrigeration cycle are placed on the outer box 5 on the back side of the No. 3 inside the wire condenser 14 of the oil cooler 18a. It is a fitting 12 for mounting so that the wire condenser 13 of the refrigeration cycle is located outside.

The fixture 12 is made of a vibration-proof material and has a semicircular cross-section, and a screw 2 that supports the vibration-proof member 24.
5, a support member 26 is mounted on the outer box 5.
Two grooves (27, 28) for inserting and fixing the heat exchange coils of both wire condensers in the circumferential portion 31 of the vibration isolator 24.
Are provided in parallel.

The method of combining the anti-vibration member 24 and the support member 26 is not particularly limited. For example, the anti-vibration member 24 is penetrated from the upper surface to the lower surface for inserting and fixing the support member 26 substantially parallel to the straight line portion 32 of the anti-vibration member 24. The hole 29 is provided, and the straight portion 32
If a slit 30 that extends from the upper surface to the lower surface and reaches the hole 29 is provided substantially at the center of the straight portion 32, the support member 26 is inserted from the slit 30 of the vibration isolator 24 and the hole 2 is formed.
It is preferred that the support member 26 can be fixed in the 9. The heat exchange coils 22 and 23 of both wire condensers are respectively provided with grooves 28,
After being inserted and fixed in the cooling device 27, the screw 25 is used to cool the cooling device 1.
It can be mounted on the outer box 5 on the back of the.

Since the machine room 4 is covered and hermetically closed by the compressor stand 7 made of a damping plate, the cover 6 and the like, noise and vibration of the compressor 8 and the like can be suppressed and the outside of the heat insulating box body 3 can be suppressed. Box 5
Since it is also made of a vibration damping plate, noise generated from the refrigeration system 1 itself can be effectively eliminated.

After the machine room 4 is covered with the compressor stand 7 and the cover 6 made of the vibration damping plate, it is necessary to attach it by means other than welding, such as screwing the heat insulating box body 3 with a sealing material. Is preferable because it can be effectively eliminated.

It is preferable that the outer box 5 made of the vibration damping plate is also made by means other than welding, such as screwing through a sealing material, since noise can be more effectively eliminated.

The wire condensing section 14 and the wire condensing section 13 that needs more heat exchange are located inside the wire condensing section 14 on the outer case 5 on the back surface of the cooling device 1. Since it is attached so as to be located on the outer side, the wire condensing unit 13 has a high efficiency of air cooling, and the refrigerant can be cooled well and condensed, and flowed toward the capillary tube 19.

If the length of the heat exchange coil 22 of the wire condensing unit 14 is set to be substantially the same as the length of the heat exchange coil 23 of the wire condensing unit 13, the refrigerant cooled by the wire condensing unit 14 is sufficiently liquefied. The heat of the lubricating oil of the compressor 8 is absorbed in the heat absorbing portion a of the oil cooler 18a and part of it is vaporized, so that the compressor 8 can be cooled efficiently.

Since the fitting 12 made of a vibration-proof material is used, the two wire condensers (13, 1) are used at the time of use.
Since the heat exchange coils (23, 22) of 4) can be inserted and fixed at a time and mounted on the outer box 5 on the back surface of the cooling device 1 with the screw 25, the operation is simple. If the fixture 12 is used, it is not necessary to use packing such as synthetic rubber.

With the fitting 12 of the present invention, the compressor 8
Is not transmitted to the outer box 5 of the heat insulating box 3 of the cooling device 1 through the suction pipe and the attachment 12 of the wire condenser 14 and the wire condenser 13. In this way, the refrigeration system 1 itself does not substantially generate vibrations and noises, so that noises caused by resonance and resonance with walls and cabinets can be eliminated.

The damping plate used in the present invention is not particularly limited,
For example, a commercially available product in which a damping material or a sound absorbing material is sandwiched between metal plates can be used, and specifically, a damping steel plate in which rubber, a rubber composition or a resin composition is interposed between the metal plates is used. In addition, it is easy to obtain and handle, and noise and vibration can be easily suppressed.

The oil cooler capable of efficiently dissipating the heat of the lubricating oil of the compressor 8 is not particularly limited, and for example, the sub-condenser 14 provided between the compressor 8 and the main condenser 13 of the refrigeration cycle may be used. The oil cooler 18a used or the oil cooler 18b using a thermosiphon can be used.

As a refrigerant, HFC type refrigerant or HC
If a refrigerant mainly containing a system refrigerant is used, the problem of ozone layer depletion due to the refrigerant is eliminated.

[0034]

EXAMPLES The contents of the present invention will be described more specifically below with reference to FIGS. 1 to 7, but the present invention is not limited to these contents. FIG. 1 shows a cross-sectional explanatory view of a hotel refrigerator 1 as an embodiment of a cooling device using the fixture 12 of the present invention. The refrigerator 1 is constructed by inserting the inner box 10 into the outer box 5 made of a vibration damping plate that is open to the front with a space, and filling a heat insulating material such as foamed polyurethane between the boxes by an on-site foaming method. , Insulation box 3 as a refrigerator body (insulation wall)
The front opening of the heat insulating box 3 is closed by the door 2 so as to be openable and closable. An evaporator (cooler) 11 that constitutes a part of a refrigeration cycle is installed in the inside of the heat insulating box 3, and the inside of the inside is cooled to a predetermined temperature by the cooler.

At the rear portion of the lower end of the refrigerator 1, a machine room 4 is formed which is separated from the inside by the heat insulating wall of the heat insulating box 3. The machine room 4 is closed by the heat insulating box 3 on the front, upper side, and left and right sides, and is also covered with a compressor base 7 made of a vibration damping plate and a vibration damping plate covering the machine room 4 portion including the compressor 8. It is covered with the made cover 6 and the like, and is attached to the heat insulating box body 3 with a screw 17 via a sealing material 16, and the lower part is closed by a compressor base 7 made of a vibration damping plate and completely sealed. . Reference numeral 15 is a rubber or resin foot or caster. In the machine room 4, a compressor 8 that constitutes a part of the refrigeration cycle together with the cooler is installed.
The compressor 8 is driven by an internal motor, and various structures such as a reciprocating type, a rotary type, or a scroll type are applied as its structure.

FIG. 2 is a rear perspective view of a hotel refrigerator 1 as an embodiment of a cooling device using the fixture 12 of the present invention. The same reference numerals as in FIG. 1 indicate the same items. Reference numeral 20 is a dryer filled with a desiccant for drying the water in the refrigeration circuit.

FIG. 3 is an exploded perspective view showing an assembling method of the hotel refrigerator 1 as an embodiment of the cooling device using the fitting 12 of the present invention. The same reference numerals as those in FIGS. 1 and 2 indicate the same things. The machine room 4 has a compressor base 7 made of a damping plate,
It is covered with a cover 6 and the like, and is attached to the heat insulating box 3 with a screw 17 via a sealing material 16, and the lower part is closed by a compressor base 7 made of a vibration damping plate and completely sealed.

Refrigerating machine oil in an oil reservoir (not shown) of the compressor 8 is cooled by an oil cooler 18a. FIG. 4 shows an example of the refrigerating cycle of the cooling device using the fixture (not shown) of the present invention. 8 is a sub-condenser (wire condenser) 14 that compresses the evaporated vaporized refrigerant, and a main condenser (wire condenser)
A compressor for discharging to 13, a sub-condenser 14 and a main condenser 13 are condensers for condensing and liquefying the refrigerant, 19 is a capillary tube for reducing the pressure, 11 is an evaporator for evaporating the liquefied refrigerant, and arrows indicate the flow of the refrigerant. Show. In order to use the liquefied refrigerant cooled in the sub-condenser 14 as a medium for cooling the refrigerating machine oil of the compressor 8, a part of the pipeline of the refrigeration cycle is arranged in a heat exchange relationship in the oil sump of the compressor 8. To form the oil cooler 18a. Heat absorbing part a of the oil cooler 18a
Are arranged in a heat exchange relationship in the oil sump of the compressor 8.

The oil cooler 18a extends upward from the oil cooler 18a, exits from the machine room 4 and is mounted on the back plate of the outer box 5 using the fitting 12 of the present invention. The heat exchange coil 22 is bent in a zigzag shape, and a large number of heat radiation wires 21 and other heat radiators 21 are provided orthogonal to the meandering direction of the heat exchange coil 22 and fixed in a heat exchange relationship with the outside air. Has been done. Heat exchange coil 2 of the heat dissipation part b
The length of 2 is set to be substantially the same as the length of the heat exchange coil 23 of the main condenser 13, and is attached so as to be located inside the main condenser 13.

During the cooling operation, when the motor of the compressor 8 is driven, a high-temperature and high-pressure gas refrigerant is discharged from the compressor 8, and the liquefied refrigerant cooled in the sub-condenser 14 cools refrigerating machine oil. After being further condensed in the main condenser 13 and decompressed in the capillary tube 19, it flows into the cooler 11 and exerts a cooling action, whereby the inside of the refrigerator is cooled. On the other hand, the compressor 8 vibrates due to the driving of the motor,
Noise is generated from the compressor 8 and the refrigerant pipe in the machine room 4. Since the machine room 4 is completely sealed from the outside by a compressor base 7 made of a damping plate, a cover 6, etc., noises and vibrations from the parts in the machine room 4 including the compressor 8 are prevented from occurring by the heat insulating box 3 And the compressor stand 7, cover 6 etc. absorbs it well,
Or, it is cut off and the volume and vibration leaking to the outside are significantly reduced.

Further, when connecting the compressor base 7 or the cover 6 itself, or when attaching the compressor base 7 or the cover 6 to the heat insulating box 3, it is preferable to use a method other than welding. As a method other than welding, the screw 17 is inserted through the sealing material 16.
(See FIGS. 1 to 3). By doing so, the vibration generated in the compressor 8 can be favorably absorbed. Moreover, since the outer box 5 of the heat insulating box 3 is also made of a vibration damping plate, noise and vibration generated by the refrigerator 1 itself are significantly reduced. With these, it becomes possible to further promote the noise reduction of the refrigerator 1.

When the compressor 8 is operated, the compressor 8
As described above, the temperature of the compressor 8 becomes high due to the heat from various heat sources, but the refrigerating machine oil is efficiently cooled by the oil cooler 18a, so that the abnormal temperature rise of the compressor 8 can be eliminated. Occurrence of failure such as burnout of the wire is also prevented.

Due to the heat radiating action of the oil cooler 18a, there is no need to form a blower or a ventilation path in the machine room 4 as in the conventional case, so that the volume of the machine room 4 can be reduced.
As a result, it is possible to expand the effective molten product inside the heat insulating box 3.

FIG. 5 shows an example of another refrigerating cycle of the cooling device using the fitting (not shown) of the present invention. Here, FIG. 5 shows another embodiment of the oil cooler, and FIG.
The same reference numerals as in FIG. 4 indicate the same parts. In this case, a thermosiphon is attached to the compressor 8 as an oil cooler 18b. This thermosiphon is equipped with water, ethanol,
Alternatively, it is configured by enclosing a working fluid such as CFC, and the working fluid in a saturated state absorbs heat in the oil sump of the refrigerating machine oil to become steam, climbs upward, and releases heat by natural heat dissipation on the condensation side. It releases and condenses.

The evaporation side (heat absorbing part) a of the lower part of the thermosiphon is arranged in a heat exchange relationship in the oil sump of the compressor 8. The thermosiphon extends upward from the machine room 4, exits from the machine room 4, and is mounted on the back plate of the outer box 5 using the fixture 12 (see FIGS. 1 to 3) of the present invention. In the heat radiating portion b, the heat exchange coil 22 is bent in a zigzag shape and a large number of heat radiating wires 21
Are provided orthogonal to the meandering direction of the heat exchange coil 22, and are fixed in a heat exchange relationship with the outside air. The length of the heat exchange coil 22 of the heat dissipation part b is the same as that of the heat exchange coil 2 of the main condenser 13.
The length of the main condenser 1
It is attached so as to be located inside 3.

The working fluid in the evaporation side a of the thermosyphon absorbs the heat from the compressor 8 and evaporates, climbs upward, and flows into the condensation side (heat dissipation section) b. Since the condensation side b is fixed in a heat exchange relationship with the outside air by using the attachment 12 of the present invention on the back plate of the outer box 5 made of a damping plate, the working fluid is condensed by the outside air and at the same time enters the outside air. The heat absorbed from the compressor 8 is radiated. As a result, the abnormal temperature rise of the compressor 8 can be eliminated as described above. Further, since the machine room 4 is also hermetically sealed, noise is similarly significantly reduced.

FIG. 6 is an explanatory view showing a specific example of the fixture of the present invention. As shown in (a), the fixture 12 is made up of a vibration-proof rubber, soft plastics, foam, or other material having a semicircular cross section, and a screw 25 that supports the vibration-proof member 24. U-shaped support member 2 mounted on the outer box 5
It consists of 6. Two grooves 27, 28 for inserting and fixing the heat exchange coils 22, 23 of both wire condensers are provided in parallel on the circumferential portion 31 of the vibration isolator 24. In addition, the support member 26 is disposed substantially parallel to the straight line portion 32 of the vibration isolation member 24.
Hole 2 from top to bottom for inserting and fixing
9 is provided, and a slit 30 that extends from the upper surface to the lower surface and reaches the hole 29 is provided substantially at the center of the linear portion 32. In (b), the support member 26 is inserted from the slit 30 of the vibration isolating member 24 to form the hole 2
9 shows a state in which the support member 26 is fixed in the position 9. In actual use, for example, the heat exchange coil 2 of the two-wire condenser
After inserting 2 and 23 into the grooves 28 and 27 and fixing them, respectively, the screws 25 are placed on the outer box 5 on the rear surface of the cooling device 1 as shown in FIG.
Install as shown in ~ 3.

Compressor stand 7 (thickness 1.2
mm) and cover 6 made of damping plate (thickness 1.2 mm)
Etc. completely cover the machine room 4, and the outer box 5 of the heat insulating box 3
Fig. 7 (b) shows the measurement results of noise and vibration in the case where the condensers (13, 14) were attached to the back of the outer box of the hotel refrigerator made of the vibration damping plate using the attachment 12 of the present invention.
Shown in (A) is a comparative example, where the outer box is made of an iron plate and the condenser is attached to the back surface of the outer box. It can be seen that in the case of (b), it is reduced by 5 dB or more. As described above, the effect of the fixture 12 and the cover 6 made of the vibration damping plate is great, and it extends over the entire frequency range including harmonics of 200 Hz to 20 KHz.

The noise was measured by installing the refrigerator in a wooden cabinet which is not specified in JIS C9607 (electric refrigerator and electric freezer) in consideration of actual use. The wooden cabinet used had a content of 20 cm larger in the left-right direction, height, and depth than the refrigerator to be tested. The measurement was performed according to the noise test described in JIS C9607 (electric refrigerator and electric freezer) except that the refrigerator was installed in a wooden cabinet and the measurement was performed.

In the embodiment, as the oil cooler, the oil cooler using the sub-condenser and the oil cooler using the thermosiphon have been described as examples, but the invention is not limited thereto.
Even if a heat pipe or the like is adopted, the same heat radiation effect can be expected. Further, although the home refrigerator has been described in the embodiments, the present invention is not limited to this, and the present invention is also effective for a showcase and a commercial refrigerator.

[0051]

According to the fixture of the present invention, the outer box of the heat insulating box body of the cooling device is made of the damping plate, and the machine room is covered with the damping plate to be hermetically sealed, and the heat insulating box body is provided with the sealing material. The condenser of the oil cooler together with the condenser of the refrigeration cycle in a specific positional relationship on the back of the cooling device that is attached by a method such as screwing through and has an oil cooler to cool the lubricating oil of the compressor. It is a fixture used when arranging in a stack. The fitting of the present invention comprises a vibration isolating member having a specific structure made of a vibration isolating material and a supporting member for supporting / fixing the vibration isolating member and attaching the vibration isolating member to the back surface of the cooling device with a screw. Since the heat exchange coil of the container is fixed at one time, the operation is simple and it is possible to suppress the vibration of the compressor from being transmitted to the outer box and vibrating the outer box.

With the fitting of the present invention, it is not necessary to use packing such as synthetic rubber. The cooling device using the fitting of the present invention effectively eliminates noise and vibration generated from the refrigerator itself such as a compressor, and eliminates noise and vibration caused by the resonance and resonance of vibration in walls and cabinets. In addition, the heat dissipation effect can be improved.

A cooling device using the fitting of the present invention is for home use,
When used in hotels, inns, etc., it is possible to provide comfort in the installed bedroom and the like, and it is also possible to use HFC-based refrigerants and HC-based refrigerants. The fixture of the present invention is economical because it has a simple structure, and is highly effective and highly useful in industry.

[Brief description of drawings]

FIG. 1 is an explanatory cross-sectional view of a cooling device using a fitting of the present invention.

FIG. 2 is a rear perspective view of a cooling device using the fitting of the present invention.

FIG. 3 is an exploded perspective view showing a method of assembling a cooling device using the fitting of the present invention.

FIG. 4 shows a refrigeration cycle of a cooling device using the fitting of the present invention.

FIG. 5 shows another refrigeration cycle of the cooling device using the fitting of the present invention.

FIG. 6 is an explanatory view of a fitting of the present invention.

FIG. 7 is a graph showing the relationship between noise and frequency.

[Explanation of symbols]

 1 Refrigerator 2 Open / close door 3 Insulation box 4 Machine room 5 Outer box 6 Cover 7 Compressor stand 8 Compressor 9 Door panel 10 Inner box 11 Evaporator 12 Fixture 13 Condenser 14 Condenser 15 Rubber feet 16 Seals Material 17 Screw 18a, 18b Oil cooler 19 Capillary tube 20 Dryer 21 Radiator 22, 23 Heat exchange coil 24 Anti-vibration member 25 Screw 26 Support member 27, 28 Groove 29 Hole 30 Slit 31 Circumferential part 32 Straight part

Claims (6)

[Claims] 1. An outer box of a heat insulating box of a cooling device having a refrigerating cycle in which a machine room is provided at a lower part of a heat insulating box having an opening / closing door at an opening is made of a damping plate, and the machine room is damped. It is equipped with an oil cooler that covers and seals with a plate and cools the lubricating oil of the compressor of the refrigeration cycle, and the wire condenser of this oil cooler and the wire condensation of the refrigeration cycle are provided on the outer box on the back of the heat insulation box. A condenser of a cooling device, which is installed so that the wire condenser of the oil cooler is located inside and the wire condenser of the refrigeration cycle is located outside, and is a vibration-proof material. It consists of a vibration isolator with a semi-circular cross section made from and a support member that supports it and is mounted on the outer box with screws, and inserts the heat exchange coil of the wire condenser into the circumference of the vibration isolator. Parallel the two grooves for fixing A fitting for a wire condenser of a cooling device, which is provided. 2. The fitting for a wire condenser of a cooling device according to claim 1, wherein the damping plate is a damping steel plate. 3. The fitting for a wire condenser of a cooling device according to claim 1, wherein the outer box of the heat insulating box is an outer box made by means other than welding. 4. The oil cooler is an oil cooler using a sub-condenser provided between a compressor and a main condenser of a refrigeration cycle, or an oil cooler using a thermosiphon. A fitting for a wire condenser of a cooling device according to claim 3. 5. The fitting for a wire condenser of a cooling device according to claim 1, wherein the machine room covered with a vibration damping plate is attached to the heat insulating box by a screw through a sealing material. 6. The fitting for a wire condenser of a cooling device according to claim 1, wherein the refrigerant is an HFC refrigerant or a refrigerant mainly composed of an HFC refrigerant and an HC refrigerant.