JP2013088003A - Outdoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of acoustic performance due to water absorption by soundproof materials.SOLUTION: An outdoor unit 10 has a compressor 22 for compressing a refrigerant in a refrigerating circuit, first soundproof materials 3A which include acoustic materials 41 and a sound insulator 42 having water absorption properties and cover the side of the compressor 22, and a base plate frame 16 in which the compressor 22 is installed. The first soundproof materials 3A include the sound insulator 42 covering the side in a state with its lower end brought into abutment with a base plate 17a of the base plate frame 16, the acoustic materials 41 covering the side at a position inside the sound insulator 42 and at a position upper than a lower end of the sound insulator 42, and a waterproof part 43 positioned under the acoustic materials 41. The waterproof part 43 is integrally formed with the sound insulator 42.

Description

  The present invention relates to an outdoor unit applied to a refrigeration apparatus such as an air conditioner.

  DESCRIPTION OF RELATED ART Conventionally, the refrigerating apparatus provided with the refrigerant circuit, such as an air conditioner, a refrigerator, a refrigerator, and a heat pump water heater, is known. The outdoor unit of this refrigeration apparatus includes a compressor, a cylindrical soundproof material that covers the compressor in order to reduce noise generated during operation of the compressor, and a casing that houses these. The sound insulating material has a structure in which a sound insulating material formed of a material having excellent sound insulating properties such as rubber and a sound absorbing material formed of a material having excellent sound absorbing properties are laminated (for example, Patent Document 1). reference).

  As a material for the sound absorbing material, a material having a continuous void formed therein, such as felt, is used. When sound waves are incident on the sound absorbing material, the air present in the gap vibrates, and the vibration of the air is converted into thermal energy by the friction of the fibers, resulting in a sound absorbing phenomenon. Thus, the sound-absorbing material in which continuous voids are formed has high water absorption.

JP 2009-8363 A

  By the way, in the casing of the outdoor unit, for example, a heat exchanger, an accumulator, and the like are disposed, and condensed water generated on these surfaces may flow down and collect on the bottom plate of the casing. When the water collected on the bottom plate comes into contact with the lower end portion of the sound absorbing material, it is sucked up by the sound absorbing material by a capillary phenomenon and retained in the space of the sound absorbing material. However, when the sound absorbing material retains water in this way, the vibration of the air is hindered, and as a result, the sound absorbing performance of the sound absorbing material is degraded.

  The present invention has been made in view of such circumstances, and in an outdoor unit provided with a soundproofing material that covers the side surface of the compressor, to prevent a decrease in sound absorption performance due to the soundproofing material absorbing water. With the goal.

  In order to solve the above problems, an outdoor unit of the present invention includes a compressor that compresses a refrigerant in a refrigerant circuit, a soundproof material that covers a side surface of the compressor, and a bottom plate on which the compressor is installed. The sound insulating material covers the side surface with the bottom end in contact with the bottom plate, and the side surface at a position inside the sound insulating material and above the lower end portion of the sound insulating material. The sound-absorbing material to cover and the waterproof part located in the lower side of the said sound-absorbing material are included.

  In this configuration, a high sound insulation effect can be obtained by covering the side surface of the compressor with the soundproof material while the lower end portion of the sound insulation material is in contact with the bottom plate. Further, since the waterproof part is provided on the lower side of the sound absorbing material, the water accumulated on the bottom plate is prevented from being sucked up by the sound absorbing material. Therefore, the sound absorbing performance is prevented from being lowered due to the sound absorbing material absorbing water, and a good sound absorbing effect is maintained.

  In this configuration, it is preferable that the sound insulating material is made of a waterproof material, and the waterproof portion is formed integrally with the sound insulating material from the same material as the sound insulating material.

  In this configuration, the sound insulating material and the waterproof part are integrally formed. According to this configuration, it is not necessary to manufacture the waterproof part as a separate member, which contributes to improvement in productivity and cost reduction of the soundproof material. In addition, it is advantageous in preventing the occurrence of inconveniences such as displacement and dropping of the waterproof part.

  In addition, the said soundproof material may comprise a sheet form, and may cover the said side surface by being wound around the said compressor. In this case, the waterproof part includes a plurality of unit waterproof parts intermittently arranged in a line along the sound insulating material, and these unit waterproof parts are adjacent to each other when the sound insulating material is wound around the compressor. It is preferable that they are formed in close contact with each other.

  In this configuration, the soundproof material covers the side surface of the compressor when the soundproof material is wound around the compressor.In this case, the waterproof portion includes a plurality of unit waterproof portions that are intermittently arranged in a row. Flexibility is improved and winding around the compressor is facilitated. Moreover, when the soundproof material is wound, the adjacent unit waterproof parts form a waterproof part that is in close contact with each other, so that the waterproof part can be reliably and continuously provided in the winding direction. It becomes.

  The waterproof part may be formed integrally with the sound absorbing material by the same material as the sound absorbing material, and the material may be impregnated with a waterproofing agent.

  In this configuration, the sound absorbing material and the waterproof part are integrally formed. According to this configuration, it is not necessary to manufacture the waterproof part as a separate member, which contributes to improvement in productivity and cost reduction of the soundproof material. In addition, it is advantageous in preventing the occurrence of inconveniences such as displacement and dropping of the waterproof part.

  As described above, according to the outdoor unit of the present invention, since the side surface of the compressor is covered with the soundproof material provided with the sound insulating material and the sound absorbing material, a good soundproofing effect can be obtained. In addition, the sound absorbing material prevents the sound absorbing material from sucking up water accumulated on the bottom plate, so that the sound absorbing performance of the sound absorbing material is prevented from being lowered by the water absorption, and the sound absorbing performance of the sound absorbing material is maintained well. Is done.

It is a piping system figure showing the composition of the air harmony device to which the present invention is applied. It is the cross-sectional schematic of the outdoor unit which shows a baseplate frame and the compressor installed in this. It is a perspective schematic diagram including the compressor etc. which show the composition of a soundproof material. FIG. 3 is an enlarged view of a main part of FIG. 2. (A) is sectional drawing which shows the modification of a soundproof material, (b) is sectional drawing which shows the state which wound the said soundproof material around the compressor. It is sectional drawing which shows the modification of a soundproof material.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a piping diagram showing an air conditioner to which the present invention is applied. The air conditioner 1 shown in this figure includes an outdoor unit 10 installed outdoors and an indoor unit 12 set indoors, and performs cooling operation and heating operation while circulating a refrigerant between them. Do.

  The outdoor unit 10 includes a compressor 22, an accumulator 24, a four-way switching valve 26, an outdoor heat exchanger 28, an expansion valve 30, and a casing 11 in which the compressor 22 and the like are accommodated. On the other hand, the indoor unit 12 includes an indoor heat exchanger 32 and a casing 13 in which the indoor heat exchanger 32 is accommodated.

  The compressor 22, the accumulator 24, the four-way switching valve 26, the outdoor heat exchanger 28, the expansion valve 30 and the indoor heat exchanger 32 are connected by piping, thereby enabling the refrigeration cycle to be performed while circulating the refrigerant. A refrigerant circuit 20 is configured.

  More specifically, the compressor 22 includes a refrigerant suction port and a discharge port. The discharge port is connected to the first port 27a of the four-way switching valve 26 via the discharge pipe 2a, and the suction port is connected to the third port 27c of the four-way switching valve 26 via the suction pipe 2b. Thus, the compressor 22 sucks and compresses the refrigerant through the suction pipe 2b and discharges the compressed refrigerant to the discharge pipe 2a. As this compressor 22, for example, a hermetic high-pressure dome type scroll compressor is applied.

  The accumulator 24 is interposed in the middle of the suction pipe 2b, and separates the liquid component from the refrigerant sucked into the compressor 22. The accumulator 24 is integrally assembled to the compressor 22 by being fixed to an attachment portion formed on the compressor 22 (see FIG. 3). The compressor 22 is provided with a soundproofing member 3 as a soundproofing measure. The soundproof member 3 will be described in detail later.

  The outdoor heat exchanger 28 includes two input / output ports. The input / output port on one side is connected to the second port 27b of the four-way switching valve 26 via the gas pipe 2c, and the input / output port on the other side is connected to the expansion valve 30 via the liquid pipe 2d. An outdoor fan 29 is attached to the outdoor heat exchanger 28, and the outdoor heat exchanger 28 exchanges heat between the refrigerant introduced from the input / output port and the outdoor air taken in by the outdoor fan 29. Similar to the outdoor heat exchanger 28, the indoor heat exchanger 32 also includes two input / output ports. The input / output port on one side is connected to the fourth port 27d of the four-way switching valve 26 via the gas pipe 2e, and the input / output port on the other side is connected to the expansion valve 30 via the liquid pipe 2f. The indoor heat exchanger 32 is provided with an indoor fan 33, and the indoor heat exchanger 32 exchanges heat between the refrigerant introduced from the input / output port and the indoor air taken in by the indoor fan 33. As the outdoor heat exchanger 28 and the indoor heat exchanger 32, for example, a cross fin type fin-and-tube heat exchanger is applied.

  The expansion valve 30 expands the refrigerant flowing from the outdoor heat exchanger 28 through the liquid pipe 2d or from the indoor heat exchanger 32 through the liquid pipe 2f, thereby reducing the refrigerant to a predetermined pressure. As the expansion valve 30, for example, an electronic expansion valve with a variable opening is applied.

  The four-way switching valve 26 includes a first state (state indicated by a solid line in FIG. 1) in which the first port 27a and the second port 27b communicate with each other and the third port 27c and the fourth port 27d communicate with each other. 27a and the fourth port 27d communicate with each other and the second port 27b and the third port 27c communicate with each other (a state indicated by a broken line in FIG. 1). Switching control is performed.

  By configuring the refrigerant circuit 20 as described above, during the cooling operation, the four-way switching valve 26 is controlled to the first state, whereby the refrigerant circulates in the direction indicated by the solid line arrow in FIG. The outdoor heat exchanger 28 functions as a condenser (heat radiator), and the indoor heat exchanger 32 functions as an evaporator. That is, in the cooling operation, the high-temperature and high-pressure refrigerant discharged from the compressor 22 flows to the outdoor heat exchanger 28 and condenses by releasing heat to the outdoor air. The condensed refrigerant is depressurized by the expansion valve 30 and then flows to the indoor heat exchanger 32 where it absorbs heat from the indoor air and evaporates. Then, the evaporated refrigerant is sucked into the compressor 22 through the accumulator 24.

  On the other hand, during the heating operation, the four-way switching valve 26 is controlled to the second state, whereby the refrigerant circulates in the direction indicated by the broken line arrow in FIG. 1, and as a result, the outdoor heat exchanger 28 serves as the evaporator and the indoor heat The exchanger 32 functions as a condenser (heat radiator). That is, in the heating operation, the high-temperature and high-pressure refrigerant discharged from the compressor 22 flows into the indoor heat exchanger 32 and condenses by releasing heat to the indoor air. The condensed refrigerant is decompressed by the expansion valve 30, and then flows to the outdoor heat exchanger 28, absorbs heat from the outdoor air, and evaporates. Then, the evaporated refrigerant is sucked into the compressor 22 through the accumulator 24.

  Next, the compressor 22 and the soundproof member 3 attached thereto will be described with reference to FIGS.

  The compressor 22 includes a substantially cylindrical vertically long main body portion 22a and a plurality of leg portions 22b connected to the lower end portion thereof, and the outdoor unit is mounted on the bottom plate frame 16 of the casing 11. 10. The accumulator 24 has a substantially cylindrical shape with a smaller diameter and a shorter dimension than the main body portion 22a of the compressor 22, and is fixed to a side surface portion of the main body portion 22a.

  As described above, the soundproofing member 3 is attached to the compressor 22 as a soundproofing measure. The soundproofing member 3 includes a first soundproofing material 3A that integrally covers the side surfaces of the compressor 22 and the accumulator 24, and a second soundproofing material 3B that covers the top surfaces of the compressor 22 and the accumulator 24.

  The first soundproofing material 3A keeps the soundproofing material main body 40 in the form of a rectangular sheet and the soundproofing material main body 40 wound around the compressor 22 and the accumulator 24 (hereinafter abbreviated as the compressor 22 etc.) in the wound state. And a fixing tool 45.

  The length of the soundproofing material main body 40 in the winding direction is set so that the soundproofing material main body 40 can be wound around the compressor 22 or the like with one end overlapped with the other end. Moreover, about the up-down direction (direction orthogonal to a winding direction), it has the length dimension which can cover the said compressor 22 whole. Specifically, the length that can cover from the lower end of the leg portion 22b of the compressor 22 to the upper end of the main body portion 22a in a state where the lower end portion of the soundproof material main body 40 is in contact with the upper surface of the bottom plate frame 16. It has a size.

  The soundproof material body 40 has a structure in which a sound absorbing material 41 and a sound insulating material 42 are laminated and bonded in the thickness direction, and as shown in FIGS. 2 and 3, the sound absorbing material 41 is provided on the side surface of the compressor 22 and the like. Are in contact with each other, and the lower end is wound around the compressor 22 and the like so as to abut against the upper surface of the bottom plate frame 16. And in this winding state, the soundproofing material main body 40 is attached to the compressor 22 or the like by connecting both ends of the soundproofing material main body 40 with the fixture 45.

  The fixture 45 includes a culture jar. The culture bag includes a disk-shaped locking button 45a fixed to one end portion in the winding direction of the soundproof material main body 40 and a locking string 45b provided at the other end portion, and the locking string 45b is locked. The both ends of the soundproof material main body 40 are tied together by being wound around the button 45a. Note that the culture bag (the locking button 45 a and the locking string 45 b) is provided on the outer surface of the sound insulating material 42.

  The sound absorbing material 41 of the soundproofing material main body 40 is made of a fibrous sound absorbing material having a large number of continuous voids therein, and in this embodiment is made of glass fiber in which glass fibers of approximately 0.4 to 3.5 μm are intertwined. The sheet-like sound absorbing material is applied. On the other hand, as the sound insulating material 42, a material having a waterproof property in addition to the sound insulating property, in this embodiment, a sheet-like sound insulating material formed of rubber is applied.

  As shown in FIGS. 2 and 4, the sound insulating material 42 includes a waterproof portion 43 at the lower end thereof. The waterproof portion 43 is formed integrally with the sound insulating material 42 by being molded such that the lower end portion of the sound insulating material 42 protrudes toward the compressor 22 than the other portions. The waterproof portion 43 is for preventing the sound absorbing material 41 from absorbing water accumulated on the bottom plate frame 16. That is, the sound absorbing material 41 is laminated and bonded to the sound insulating material 42 in a state where the lower end of the sound absorbing material 41 is in contact with the upper surface of the waterproof portion 43, so that the sound absorbing material 41 is positioned inside the sound insulating material 42 and the lower end of the sound insulating material 42. The compressor 22 and the like are covered at a position above the section. The sound absorbing material 41 is thus positioned above the waterproof part 43, so that the sound absorbing material 41 is prevented from absorbing the water accumulated on the bottom plate frame 16. The bottom plate frame 16 has a bottom plate 17a and side plates 17b erected along the periphery of the bottom plate 17a, so that condensed water flowing down from the accumulator 24, the outdoor heat exchanger 28, etc. is placed on the bottom plate 17a. It is formed to accumulate. Therefore, in order to prevent the sound absorbing material 41 from absorbing the water accumulated on the bottom plate frame 16, the waterproof portion 43 has a water level that can be accumulated on the bottom plate 17 a. It is formed so as to be located above the height H (height equal to the upper end of the side plate 17b).

  On the other hand, the second soundproof material 3B has a shape that can integrally cover the upper surface of the compressor 22 or the like, for example, an egg-shaped sheet. As shown in FIG. 2, the second sound insulating material 3B also has a structure in which a sound absorbing material 47 and a sound insulating material 48 are laminated and bonded in the thickness direction. The sound absorbing material 47 and the sound insulating material 48 are each made of the same material as that of the first sound insulating material 3A. Specifically, the sound absorbing material 47 is made of a sheet-like sound absorbing material made of glass fiber, and the sound insulating material 48 is rubber. It is made of a sheet-like sound insulating material formed from

  The second soundproofing material 3B is placed on the upper surface of the compressor 22 and the like so that the sound absorbing material 47 is positioned on the lower side (the side of the compressor 22 and the like). As shown in FIG. 3 and FIG. 3, the second soundproof material 3B includes a pair of through holes 50 and 52 penetrating in the thickness direction, and the through holes 50 and 52 and the periphery of the second soundproof material 3B. Slit-like cut portions 51 and 53 are provided, and the discharge pipe 2a and the suction pipe 2b are inserted into the through holes 50 and 52 through the cut portions 51 and 53, respectively, on the upper surface of the compressor 22 and the like. It is covered.

  As the soundproofing member 3 is attached to the compressor 22 or the like in this way, the side surface of the compressor 22 or the like is covered with the first soundproofing material 3A including the sound absorbing material 41 and the sound insulating material 42, and the upper surface of the compressor 22 or the like is covered. Similarly, the sound-absorbing material 47 and the sound-insulating material 48 are covered by the second sound-insulating material 3B, and the sound-insulating effect of the compressor 22 is exhibited by the sound-insulating and sound-absorbing functions of the sound-insulating materials 3A and 3B.

  In that case, according to the first sound insulating material 3A, the sound absorbing material 41 is disposed on the waterproof portion 43, so that the sound absorbing material 41 is prevented from absorbing water accumulated in the bottom plate frame 16. Therefore, a decrease in sound absorption performance due to the sound absorbing material 41 absorbing water is effectively suppressed. In particular, in the first soundproofing material 3A, the sound absorbing material 41 is made of a glass fiber sound absorbing material, and such a glass fiber sound absorbing material has a high sound absorbing effect because a large number of continuous ultrafine voids exist inside. However, according to the first soundproofing material 3A, since the water absorption of the sound absorbing material 41 is prevented as described above, the water absorption of the sound absorbing material 41 is prevented. It is possible to prevent the sound absorbing performance of the sound absorbing material 41 from being lowered due to the sound absorbing material 41 absorbing water, and as a result, it is possible to satisfactorily enjoy the high sound absorbing effect of the sound absorbing material 41 made of glass fiber. .

  In addition, in the first soundproofing material 3A, since the sound absorbing material 41 is prevented from absorbing water on the bottom plate frame 16 as described above, the water absorbed by the sound absorbing material 41 is the main body portion 22a of the compressor 22. There is also an advantage that it is possible to prevent inconvenience that the wall surface is corroded by long-term touching.

In addition, the outdoor unit 10 mentioned above is an illustration of embodiment of the outdoor unit which concerns on this invention, Comprising: The specific structure of the outdoor unit 10 and the specific structure of the soundproof member 3 attached to the compressor 22 are as follows. Modifications can be made as appropriate without departing from the scope of the present invention. For example, the following configurations are also applicable.
(1) In the above embodiment, since the accumulator 24 is fixed to the side surface of the compressor 22 (main body portion 22a), the first soundproofing material 3A is integrally wound around the compressor 22 and the accumulator 24. However, when the compressor 22 and the accumulator 24 are separated from each other, the first soundproofing material 3A only needs to be wound around the compressor 22 only.
(2) The waterproof portion 43 of the soundproof material main body 40 may be continuous in the winding direction in a state before being wound around the compressor 22 or the like (a state where the first soundproof material 3A is expanded). As shown in FIG. 5 (a), the waterproof part 43 is composed of a plurality of unit waterproof parts 43a that are intermittently arranged in the winding direction, and the first soundproofing material 3A is wound around the compressor 22 and the adjacent units. The waterproof parts 43a may be formed so as to be in close contact with each other in the winding direction. In the example of the same figure, each unit waterproof part 43a is formed in trapezoid shape. According to such a configuration, since the flexibility of the sound insulating material 42 is improved as much as the thickness between the adjacent unit waterproofing portions 43a is reduced, the first sound insulating material 3A can be easily wound around the compressor 22. There are advantages. For example, when the first soundproofing material 3A is wound only around the compressor 22, the first soundproofing material 3A is wound around the compressor 22 or the like as shown in FIG. Each unit waterproof part 43a may be formed such that a continuous waterproof part 43 is formed.
(3) In the above embodiment, the waterproof part 43 is formed integrally with the sound insulating material 42, but as shown in FIG. 6, the waterproof part is formed by a member different from the waterproof part 43 (referred to as a waterproof member for convenience). 43 may be formed. In this case, although the waterproof part 43 may be formed from the same material (rubber) as the sound insulating material 42, it may be formed from other waterproof materials (metal or resin). For example, if the water shielding part 43 is formed by a foaming sealing material in which closed cells are present in a resin-based base material, water absorption of the sound absorbing material 41 can be prevented, while the compressor 22 is wound around There is an advantage that followability to the compressor 22 is improved.

  However, according to the structure in which the water-insulating part 43 is formed integrally with the sound-insulating material 42 as in the embodiment, there is no need to manufacture the water-insulating part 43 as a separate member, and the first sound-insulating material 3A (the sound-insulating material body) 40) contribute to the improvement of productivity and cost reduction. In addition, it is advantageous to prevent inconveniences such as displacement and dropping of the water shielding portion 43.

Even when the waterproof portion 43 is formed of a waterproof member separate from the sound insulating material 42 as described above, a plurality of unit waterproof portions 43a that are intermittently arranged in the winding direction as in the example of FIG. 5A. And the first soundproofing material 3A is wound around the compressor 22 or the like, so that the waterproof units 43 that are adjacent to each other and closely connected in the circumferential direction may be formed.
(4) The sound absorbing material 41 and the water shielding portion 43 may be integrally formed. In other words, the water shielding portion 43 is formed integrally with the sound absorbing material 41 by the same material (glass fiber) as the sound absorbing material 41, and the material is impregnated with a waterproofing agent containing a component such as resin or rubber. May be. According to this structure, it is not necessary to manufacture the water-impervious portion 43 as a separate member as in the above-described embodiment, which contributes to improvement in productivity and cost reduction of the first soundproof material 3A (soundproof material body 40). Further, since the sound absorbing material 41 and the water shielding portion 43 are integrally formed, it is advantageous in preventing the occurrence of inconveniences such as displacement and dropping of the water shielding portion 43.
(5) In the above embodiment, the sound absorbing material 41 of the soundproofing material main body 40 is made of a sound absorbing material made of glass fiber. Of course, the sound absorbing material 41 is a sound absorbing material made of a material other than glass fiber, such as felt. Also good.
(6) In the above embodiment, an example in which the present invention is applied to an air conditioner has been described. However, the present invention is also applied to a refrigeration apparatus other than an air conditioner, such as a refrigerator, a refrigerator, and a heat pump water heater. Is possible.

DESCRIPTION OF SYMBOLS 3 Sound insulation member 3A 1st sound insulation material 3B 2nd sound insulation material 16 Bottom plate frame 17a Bottom plate 17b Side plate 22 Compressor 22a Main body part 22b Leg part 40 Sound insulation material main body 41 Sound absorption material 41a Upper sound absorption material 41b Lower sound absorption material 42 Sound insulation material 43 Waterproof Part

Claims (4)

A compressor (22) for compressing the refrigerant in the refrigerant circuit (20), a soundproof material (3A) covering the side surface of the compressor (22), and a bottom plate (17a) on which the compressor (22) is installed; With
The sound insulating material (3A) includes a sound insulating material (42) that covers the side surface in a state in which a lower end is in contact with the bottom plate (17a), and a position on the inner side of the sound insulating material (42). 42) a sound absorbing material (41) covering the side surface at a position above the lower end of the sound absorbing material (41), and a waterproof portion (43) positioned below the sound absorbing material (41). (10). In the outdoor unit (10) according to claim 1,
The sound insulating material (42) is made of a waterproof material,
The outdoor unit, wherein the waterproof part (43) is formed integrally with the sound insulating material (42) from the same material as the sound insulating material (42). The outdoor unit (10) according to claim 2,
The soundproof material (3A) has a sheet shape and covers the side surface by being wound around the compressor (22).
The waterproof part (43) includes a plurality of unit waterproof parts (43a) that are intermittently arranged in a line along the sound insulating material (42), and the unit waterproof part (43a) includes the soundproof material (3A). An outdoor unit characterized in that adjacent units are formed in close contact with each other by being wound around the compressor (22). In the outdoor unit (10) according to claim 1,
The waterproof unit (43) is formed integrally with the sound absorbing material (41) by the same material as the sound absorbing material (41), and the material is impregnated with a waterproofing agent. .

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