JPH04120582U - refrigerator - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a configuration that can effectively attenuate the noise of a compressor and blower in a machine room even with a small amount of soundproofing material, and make a refrigerator quiet. [Structure] Openings 15 are provided on both rear sides of the top plate 13 of the machine room 10. Except for this opening 15, the inside of the machine room 10 is made into a substantially sealed structure, and the compressor 19 and the blower 23
A sound source room 16 is formed in which the sound source chamber 16 is arranged. each opening 1
An intake sound absorbing duct 25 and an exhaust sound absorbing duct 26 are formed across the upper and lower sides of the rear both sides of the refrigerator body 1, communicating with the refrigerator body 1 and having a sound insulating material 30 arranged on a part of the inner wall.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is designed to reduce noise from the compressor and blower fan located in the mechanical room of the refrigerator. This relates to soundproof structures.

0002

[Conventional technology]

Figures 6 and 7 show conventional refrigerators shown in Japanese Unexamined Patent Publication No. 16286/1986, respectively. In the figure, 8 is a side plate forming the left and right side walls of the machine room 10, 19 is a compressor, 23 is a fan that blows air in the machine room 10, 21 is a condenser, and 13 is a machine room 10 is the top plate, 31 is the front outlet of the machine room 10, and 32 is the machine room 10 on the intake side and exhaust side. 33 is a soundproof material pasted on the middle partition 32, and 34 is a soundproofing material. Soundproofing material affixed to the tone plate 35, 36 and 37 are soundproofing materials affixed to the side plate 8. 35 is a soundproof plate installed in front of the compressor 19, and 38 is a back side of the machine room 10. A rear soundproofing board 39 is a soundproofing material attached to the top plate 13.

0003 Next, the operation will be explained. The sound of the compressor 19 and the blower fan 23 is removed by the partition 32. , ventilation between the side plate 8, the back soundproof plate 38, the soundproof plate 35, and the soundproof materials 33, 37, and 39 It was transmitted to the outside air through the road.

0004

[Problem that the idea aims to solve]

Conventional refrigerators are configured as described above, so the front opening area on the condenser side is Since it is larger than the ventilation passage on the end face of the sound insulation board 35, the air passage from the end face of the sound insulation board 35 to the condenser side Since the sound emitted by the compressor and the sound source in the machine room are directly transmitted to the outside air, The sound radiated into the outside air by the blower fan is transmitted through the soundproofing materials 36, 37, 39, the soundproofing board 35, and the backrest. Machine room relative to the surface area of the sound source room constituted by the surface soundproofing board 38 and the partition 32 It is determined by the sum of the cross-sectional areas of the front outlet 31 and the end face ventilation duct of the soundproof plate 35, and a large amount Despite the use of soundproofing materials, good soundproofing effects could not be obtained, and there were many gaps around the condenser. Because of this, a large amount of air is required, which is also a factor in increasing fan noise. There was a problem.

[0005] This idea was made to solve the problems mentioned above, and was designed to provide a small amount of soundproofing. The purpose is to obtain a refrigerator with good soundproofing effect even though it is made of wood.

[0006]

[Means to solve the problem]

The refrigerator according to this invention has openings only on both rear sides of the top plate of the machine compartment. Forms a sound source chamber with a nearly sealed structure, and communicates with each opening. An intake sound-absorbing duct and an exhaust sound-absorbing duct, each of which has at least a portion of its inner wall made of soundproofing material. The refrigerator body is formed by extending over and under the rear both sides of the refrigerator body.

[0007]

[Effect]

The sound of the compressor and blower in this invention is produced by two air intakes installed in the sound source room. A sound source room is created by an intake sound absorption duct and an exhaust sound absorption duct that communicate with the exhaust opening. Absorption and reflection are repeated in both ducts until the air is transmitted to the outside air. Because it provides a great soundproofing effect, even a small amount of soundproofing material can provide a large soundproofing effect.

[0008]

【Example】

Example 1. An embodiment of this invention will be described below with reference to the drawings. Same symbols as conventional technology 1 or a corresponding part. In Figures 1 to 3, 1 is the refrigerator body, and outer box 2 It is formed by an inner box 3 and a heat insulating material 4 filled between the two boxes 2 and 3. 5 and 6 are Each door covers the front of the main body 1 so that it can be opened and closed, and a gasket 7 is installed at the joint with the main body 1. It is equipped with 8 and 9 are the left and right side plates and the back plate of the outer box 2, respectively.

[0009] 10 is a machine room formed in the lower part of the main body 1, which has a front plate 11, a rear plate 12, and a top plate, respectively. 13, the bottom plate 14, and the left and right side plates 8, and the rear of the top plate 13. The machine room 10 is substantially sealed except for approximately triangular openings 15 opened on both sides. The structure forms a sound source chamber 16. 17 divides this sound source chamber 16 into front and rear parts. The partition plate has one end extending to approximately the center of one opening 15. 18 is this work The partition plate 19 installed between the cutting plate 17 and the rear plate 12 is a compressor that is one of the sound sources. It is installed behind the bottom plate 14 via rubber 20.

0010 21 and 22 are a condenser and a defrost water evaporation plate respectively arranged on the left and right sides of the front of the sound source chamber 16. It is. 23 is attached to the bell mouth 24 part opened on the above partition plates 17 and 18, respectively. A blower, which is one of the sound sources installed, is directed towards the condenser 21 and compressor 19, respectively. It's blowing air. 25 and 26 extend over the top and bottom of the rear both sides of the main body 1, and are welded, etc. The partition plate 27 fixed by the side plate 8 and the back plate 9 form a substantially triangular cross section. An intake sound-absorbing duct on the side where the blower 23 is installed and an exhaust sound-absorbing duct on the opposite side. one side communicates with the opening 15, and the other corresponds to the opening 15. An intake port 28 and an exhaust port 29 are provided on the ceiling surface of the main body 1, which is the other side. Ru. 30 are respectively arranged on the partition plate 27 which is a part of the inner wall of both the ducts 25 and 26. The sound absorbing sound insulating material is placed above and below both ducts 25 and 26.

[0011] Next, the operation will be explained. A compressor 19 and a blower emit air inside the sound source room 16 The sound of 23 comes from the left and right openings 15 provided in the top plate 13, respectively. duct 25 and into the exhaust sound absorbing duct 26. And both ducts 25, 2 6, the sound is reflected repeatedly on the partition plate 27, back plate 9, and side plate 8, and the sound insulation material 30 is repeatedly After the sound is attenuated while passing, the remaining sound is transmitted to the outside air from the intake port 28 and the exhaust port 29. Waru.

0012 In addition, ventilation is provided from the intake port 28 through the intake sound-absorbing duct 25. The air sucked in from the left rear opening 15 by the blower 23 is sent to the front of the partition plate 17. one is sent to the exhaust sound absorption duct 26 via the compressor 19, and The other water is sent from the condenser 21 to the exhaust sound absorbing duct 26 through the defrosting water evaporating tray 22. and is discharged to the outside from the exhaust port 29 at the top of the main body 1.

[0013] Figure 4 shows the sound insulation effects of the conventional example and this example. In the example, the level when the sound source is placed in the sound source room) - (the level of the sound source) It represents the difference and means the amplification factor of the sound source chamber 16 with respect to the sound source. The horizontal axis is 1/3 octare It can be seen that the example is superior.

[0014] Example 2. Note that although the above embodiment shows the condenser 21 disposed inside the sound source chamber 16, As shown in FIG. 5, the soundproofing material 30 is arranged on the back plate 9, and the partition plate 27 is provided with claws 27a, The condenser pipe 21a may be fixed to the claw 27a, and in this case, the partition plate 27 is released. Since it serves as a hot plate, the condenser 21 in the sound source chamber 16 is no longer necessary, and the blower Since the pressure applied to the blower 23 is reduced, the rotation speed of the blower 23 can be lowered, This has the effect of lowering the noise level of the sound source itself.

[0015]

[Effect of the idea]

As mentioned above, according to this invention, the machine room is closed except for the opening in the top plate, making it possible to make noise. At least a part of the inner wall that forms the source room and communicates with the opening is made of soundproof material. Install the air intake sound absorption duct and exhaust sound absorption duct at the top and bottom of both sides of the rear of the refrigerator body. Because of the cross-over structure, a large soundproofing effect can be obtained with a small amount of soundproofing material, and it also provides quiet cooling. It has the effect of gaining storage space.

[Brief explanation of drawings]

FIG. 1 is a perspective view from the rear of a refrigerator showing a first embodiment of the invention.

FIG. 2 is a sectional view taken along line II-II in FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a comparison diagram of the soundproofing effects of the conventional example and Example 1.

FIG. 5 is a sectional view of a main part of a refrigerator showing a second embodiment of the invention.

FIG. 6 is a horizontal sectional view of a machine room showing a conventional refrigerator.

FIG. 7 is a side sectional view showing main parts of a conventional refrigerator.

[Explanation of symbols]

1 Refrigerator body 10 Machine room 13 Top plate 15 Opening 16 Sound source room 19 Compressor 23 Blower 25 Sound absorption duct for intake 26 Exhaust sound absorption duct 30 Soundproofing material

Claims (1)

[Scope of utility model registration request] [Claim 1] In a refrigerator in which a compressor and a blower are disposed in a machine room, openings are provided on both rear sides of a top plate constituting the upper part of the machine room, and the machine room is omitted except for these openings. An intake sound-absorbing duct and an exhaust sound-absorbing duct each forming a sound source chamber in which the compressor and blower are arranged in a sealed structure, each communicating with the opening, and having at least a portion of the inner wall made of a soundproofing material. A refrigerator characterized in that: and are formed across the top and bottom of both rear sides of the refrigerator body.