JP2009014228A - Refrigeration equipment - Google Patents

Abstract

In a refrigerating apparatus in which a covering member is provided for a compressor in order to obtain both effects of heat insulation and soundproofing of a compressor, the covering member is thinned to realize a compact refrigerating apparatus. .
A refrigerant circuit (20) provided with a compressor (30) and a covering member (25) covering the periphery of the compressor (30) are provided, and the covering member (25) is constituted by a heat insulating material. Between the covering member (25) and the compressor (30) against the refrigeration apparatus (10) in which the heat insulating layer (17) and the sound absorbing layer (18) made of the sound absorbing material are laminated. Air layer forming means (7, 8) for forming the layer (19) is provided.
[Selection] Figure 2

Description

  The present invention relates to a refrigeration apparatus including a member that covers a compressor.

  Conventionally, a refrigeration apparatus including a covering member that covers a compressor is known. The covering member is provided for the purpose of heat insulation and sound insulation. In this type of refrigeration apparatus, when the compressor is insulated, it is possible to suppress a decrease in the amount of heat of refrigerant discharged from the compressor due to heat radiation from the surface of the compressor. When the compressor is soundproofed, the noise of the compressor is suppressed.

  Patent Document 1 describes an air conditioner in which a coating member for soundproofing a compressor is provided as this type of refrigeration apparatus. In this air conditioner, the compressor is covered with a three-layer covering member together with the accumulator. This covering member is composed of an inner layer made of a sound absorbing material, a sound absorbing layer, and an outer layer made of rubber.

Patent Document 2 describes a refrigeration apparatus in which a covering member for heat insulation is provided for a compressor as this type of refrigeration apparatus. In this refrigeration apparatus, the covering member is made of a heat insulating material made of an inorganic material.
JP-A-8-152229 JP-A-8-193590

  By the way, as the covering member covering the compressor, a heat insulating material mainly for heat insulation, a sound absorbing material mainly for sound absorption, and a sound insulating material mainly for sound insulation are used according to the purpose. Of these, the heat insulating material generally has a certain degree of sound insulation, but has a property of poor sound absorption. For this reason, in order to acquire a high effect about both the heat insulation and soundproofing of a compressor by providing a covering member in a compressor, it becomes indispensable to combine a heat absorbing material with a heat insulating material.

  However, when a covering member in which a sound absorbing material is combined with a heat insulating material is applied to a conventional refrigeration apparatus, the vibration of the compressor is directly propagated to the covering member. When the vibration of the compressor is propagated to the covering member, the vibration causes noise. For this reason, in order to reduce the vibration propagated to the covering member, the sound absorbing material needs to have a certain thickness. And since the thickness of the coating | coated member becomes large, the coating | coated member occupies a big volume and it was difficult to aim at size reduction of a freezing apparatus.

  The present invention has been made in view of such a point, and the object thereof is a refrigeration apparatus provided with a covering member for a compressor in order to obtain both effects of heat insulation and sound insulation of the compressor. It is to reduce the thickness of the covering member and to realize a compact refrigeration apparatus.

  The first invention includes a refrigerant circuit (20) provided with a compressor (30), and a covering member (25) covering the periphery of the compressor (30), wherein the covering member (25) A refrigeration apparatus (10) in which a heat insulating layer (17) made of a material and a sound absorbing layer (18) made of a sound absorbing material are stacked is an object. The refrigeration apparatus (10) includes air layer forming means (7, 8) for forming an air layer (19) between the covering member (25) and the compressor (30).

  In the first invention, the air layer (19) is formed between the covering member (25) and the compressor (30) by the air layer forming means (7, 8). For this reason, the vibration of the compressor (30) is propagated to the covering member (25) through the air layer (19). That is, the vibration of the compressor (30) is hardly transmitted directly to the covering member (25).

  According to a second aspect of the present invention, in the first aspect, the covering member (25) serves as the air layer forming means (7, 8) so that the tip contacts the surface of the compressor (30). A protrusion (7) protruding from the inner surface of (25) is provided.

  In 2nd invention, the protrusion part (7) protrudes from the inner surface of the coating | coated member (25). And the front-end | tip of a protrusion part (7) is contacting the surface of a compressor (30). A gap between the compressor (30) and the covering member (25) is secured by the protrusion (7).

  In a third aspect based on the second aspect, in the covering member (25), the sound absorbing layer (18) is formed inside the heat insulating layer (17) and exposed to the air layer (19). The protruding portion (7) is constituted by a convex portion formed on the inner surface of the sound absorbing layer (18).

  In the third invention, the projecting portion (7) constitutes the convex portion formed on the inner surface of the sound absorbing layer (18). The convex portion is constituted by a sound absorbing material constituting the sound absorbing layer (18). That is, the protrusion (7) is configured by a sound absorbing material. For this reason, in the protrusion (7), the vibration of the compressor (30) is attenuated before propagating to the sound absorbing layer (18).

  In a fourth aspect based on the second aspect, the protrusion (7) is constituted by a protrusion member formed separately from the heat insulating layer (17) and the sound absorbing layer (18).

  In the fourth invention, the protruding member formed separately from the heat insulating layer (17) and the sound absorbing layer (18) constitutes the protruding portion (7). The protruding member is provided on the covering member (25) so as to protrude from the inner surface of the covering member (25).

  In a fifth aspect based on the fourth aspect, the projecting member is constituted by a spring-like member, a needle-like member, or a tubular member.

  In the fifth invention, the protruding member, that is, the protruding portion (7) is constituted by the spring-like member, the needle-like member, or the cylindrical member. For this reason, when the protrusion (7) is constituted by a spring-like member, the vibration of the compressor (30) is absorbed by the spring-like member, so that the vibration of the compressor (30) is absorbed by the sound absorbing layer (18). Attenuated before propagating. In addition, when the protrusion (7) is constituted by a needle-like member or a cylindrical member, the area where the protrusion (7) contacts the compressor (30) is relatively small, so the protrusion (7) The vibration of the propagating compressor (30) becomes minute. Therefore, in both cases where the projecting portion (7) is constituted by a spring-like member and when the projecting portion (7) is constituted by a needle-like member or a cylindrical member, the vibration of the compressor (30) is transmitted through the projecting portion (7). Propagation to the covering member (25) is suppressed.

  A sixth invention includes a casing (35) in which the compressor (30) is installed in any one of the first to fifth inventions, and a bottom surface portion in the casing (35) As the air layer forming means (7, 8), the covering member (25) provided so as to surround the side surface of the compressor (30) is guided to a position where a gap is formed between the air compressor and the compressor (30). A guide portion (8) is provided.

  In 6th invention, the guide part (8) as an air layer formation means (7, 8) is provided in the bottom face part in a casing (35). For this reason, when providing the covering member (25) so as to surround the side surface of the compressor (30), the covering member (25) is guided to a position where a gap is formed between the covering member (25) and the compressor (30). That is, a gap serving as an air layer (19) is formed between the covering member (25) and the compressor (30) simply by providing the covering member (25) according to the guide portion (8).

  In a seventh aspect based on any one of the first to sixth aspects, the refrigerant circuit (20) is provided with an accumulator (31) on the suction side of the compressor (30), while the covering member (25) is provided so as to cover the accumulator (31) together with the compressor (30).

  In the seventh invention, the accumulator (31) is covered with the covering member (25) together with the compressor (30). Incidentally, the accumulator (31) is connected to the suction side of the compressor (30) via a pipe. For this reason, the vibration of the compressor (30) propagates to the accumulator (31) through the piping. Therefore, the accumulator (31) vibrates with the operation of the compressor (30), and the accumulator (31) emits sound. In the seventh aspect of the invention, not only the compressor (30) but also the accumulator (31) is covered with the covering member (25), so that the noise from the accumulator (31) is prevented from propagating to the outside. For this reason, the noise from the refrigeration apparatus (10) is reduced.

  In the present invention, the air layer (19) is formed between the covering member (25) and the compressor (30) by the air layer forming means (7, 8), so that the vibration of the compressor (30) is reduced. (25) is not directly propagated. For this reason, compared with the case where the vibration of a compressor (30) is propagated directly to a covering member (25), the vibration propagated to a covering member (25) is reduced significantly. For this reason, since it is not necessary to secure the thickness of the sound absorbing layer (18) in order to attenuate the vibration that causes noise, the thickness of the sound absorbing layer (18) can be reduced. Therefore, since the covering member (25) can be thinned, the volume occupied by the covering member (25) can be reduced, and the refrigeration apparatus (10) can be made compact.

  Moreover, in the said 2nd invention, the clearance gap between a compressor (30) and a coating | coated member (25) is ensured by the protrusion part (7). By the way, the size of the compressor (30) has individual differences depending on the assembly accuracy of the compressor (30). For this reason, even if the covering member (25) is provided at a fixed position so that the air layer (19) is formed, the covering member (25) may come into contact with the compressor (30). In the second invention, as described above, the gap between the compressor (30) and the covering member (25) is ensured by the protrusion (7). Therefore, an air layer (19) can be reliably formed between the compressor (30) and the covering member (25) regardless of individual differences in the size of the compressor (30).

  Moreover, in the said 3rd invention, the vibration of a compressor (30) is attenuate | damped before propagating to a sound absorption layer (18) by comprising a protrusion part (7) with a sound absorption material. For this reason, it can suppress that the vibration of a compressor (30) propagates to a covering member (25) via the member for ensuring the crevice between a compressor (30) and a covering member (25). it can.

  In the fifth aspect of the invention, the protrusion (7) is constituted by the spring-like member, the needle-like member, or the tubular member, so that the vibration of the compressor (30) is covered via the protrusion (7). Propagation to the member (25) is suppressed. That is, it is possible to suppress the vibration of the compressor (30) from propagating to the covering member (25) through the member for ensuring a gap between the compressor (30) and the covering member (25). .

  Further, according to the sixth aspect of the invention, the air layer (19) is provided between the covering member (25) and the compressor (30) only by providing the covering member (25) according to the guide portion (8). To be formed. For this reason, since it is not necessary to adjust the position of the covering member (25) when the covering member (25) is provided, an air layer (19) is easily formed between the covering member (25) and the compressor (30). Can be formed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  This embodiment is a refrigeration apparatus (10) according to the present invention. The refrigeration apparatus (10) is configured as an air conditioner (10). As shown in FIG. 1, the air conditioner (10) includes an outdoor unit (11) and an indoor unit (13).

  In the casing (35) of the outdoor unit (11), there are a compressor (30), an accumulator (31), a four-way selector valve (33), an outdoor heat exchanger (34) as components of the air conditioner (10). ), An outdoor expansion valve (36), and an outdoor fan (12). In the casing (38) of the indoor unit (13), an indoor heat exchanger (37) and an indoor fan (14) are provided as components of the air conditioner (10). The components of the air conditioner (10) are connected to a refrigerant circuit (20) filled with a refrigerant. In the refrigerant circuit (20), the vapor compression refrigeration cycle is performed by circulating the refrigerant.

  The compressor (30) is configured as a high-pressure dome type compressor. The discharge side of the compressor (30) is connected to the first port (P1) of the four-way switching valve (33) via the discharge pipe (21). The suction side of the compressor (30) is connected to the bottom surface of the accumulator (31) via the suction pipe (22).

  The accumulator (31) is configured in a sealed container shape. The accumulator (31) is disposed close to the compressor (30). One end of the connection pipe (23) is connected to the upper surface of the accumulator (31). The other end of the connection pipe (23) is connected to the third port (P3) of the four-way switching valve (33). The compressor (30) and the accumulator (31) are covered with a covering member (25). Details of the covering member (25) will be described later.

  The outdoor heat exchanger (34) is configured by a cross fin type fin-and-tube heat exchanger. An outdoor fan (12) that sends outdoor air to the outdoor heat exchanger (34) is disposed in the vicinity of the outdoor heat exchanger (34). In the outdoor heat exchanger (34), heat is exchanged between the outdoor air and the refrigerant. One end of the outdoor heat exchanger (34) is connected to the second port (P2) of the four-way switching valve (33). The other end of the outdoor heat exchanger (34) is connected to the outdoor expansion valve (36).

  The indoor heat exchanger (37) is configured by a cross fin type fin-and-tube heat exchanger. An indoor fan (14) for sending room air to the indoor heat exchanger (37) is disposed in the vicinity of the indoor heat exchanger (37). In the indoor heat exchanger (37), heat is exchanged between the indoor air and the refrigerant. One end of the indoor heat exchanger (37) is connected to the fourth port (P4) of the four-way switching valve (33). The other end of the indoor heat exchanger (37) is connected to the outdoor expansion valve (36).

  The four-way selector valve (33) is in a first state in which the first port (P1) and the second port (P2) communicate with each other and the third port (P3) and the fourth port (P4) communicate with each other (FIG. 1). And a second state (FIG. 1) in which the first port (P1) and the fourth port (P4) communicate with each other and the second port (P2) and the third port (P3) communicate with each other. The state indicated by the broken line) can be switched freely.

  In the air conditioner (10), the cooling operation and the heating operation are selectively performed. During the cooling operation, the four-way selector valve (33) is set to the first state. In the refrigerant circuit (20) during the cooling operation, the outdoor heat exchanger (34) operates as a radiator, and the indoor heat exchanger (37) operates as an evaporator, so that a vapor compression refrigeration cycle is performed. On the other hand, during the heating operation, the four-way selector valve (33) is set to the second state. In the refrigerant circuit (20) during the heating operation, the indoor heat exchanger (37) operates as a radiator and the outdoor heat exchanger (34) operates as an evaporator, so that a vapor compression refrigeration cycle is performed.

−Structure of compressor and accumulator−
The structures of the compressor (30) and the accumulator (31) will be described. As shown in FIG. 2, the compressor (30) includes a compression mechanism (50) that compresses the refrigerant, an electric motor (46) that drives the compression mechanism (50), a compression mechanism (50), and an electric motor (46). And a storage container (28).

  As shown in FIGS. 2 and 3, the storage container (28) is formed in a cylindrical container shape whose both ends are closed. For example, three plate-like members (29) are connected to the bottom surface of the storage container (28). Each plate-like member (29) has an insertion hole (29a) through which a pin member (39) described later is inserted. These plate-like members (29) are arranged at equal intervals in the circumferential direction of the container (28). The plate-like member (29) and the pin member (39) play a role of holding the position of the compressor (30) against the vibration of the storage container (28) during the operation of the compressor (30).

  The accumulator (31) is configured as a cylindrical container closed at both ends. The outer diameter and height of the accumulator (31) are smaller than the storage container (28) of the compressor (30). The accumulator (31) is disposed in the compressor via the support member (40) in a state in which the axial direction thereof substantially coincides with the axial direction of the container (28) of the compressor (30) and is close to the compressor (30). (30) is attached.

  A discharge pipe (21) is connected to the upper surface of the container (28) of the compressor (30). A suction pipe (22) is connected to a lower position on the side of the storage container (28). The suction pipe (22) extends in the horizontal direction and then bends vertically upward and is connected to the bottom surface of the accumulator (31). A connection pipe (23) is connected to the upper surface of the accumulator (31).

  Three pin members (39) project from the bottom surface portion (43) in the casing (35) of the outdoor unit (11). The pin member (39) is disposed at a position corresponding to the apex of the equilateral triangle, corresponding to the plate-like member (29). The compressor (30) and the accumulator (31) are integrally installed while the pin member (39) is inserted through the insertion hole (29a) of the plate-like member (29).

  A groove-shaped guide portion (8) is formed on the bottom surface portion (43) in the casing (35). The guide part (8) is formed by press working. The width of the groove in the guide portion (8) is larger than the thickness of the covering member (25) described later.

  The guide part (8) is formed so as to surround the compressor (30) and the accumulator (31). The inner peripheral shape of the guide part (8) is slightly larger than the shape of the compressor (30) and the accumulator (31) integrally projected in the vertical direction. In the guide part (8), the covering member (25) is installed in a state of being bent into a cylindrical shape. When the covering member (25) is installed, the compressor (30) and the accumulator (31) are collectively surrounded by the covering member (25). In this state, an air layer (19) is formed between the covering member (25) and the compressor (30) or between the covering member (25) and the accumulator (31).

-Structure of the covering member-
The structure of the covering member (25) will be described. As shown in FIGS. 2 and 3, the covering member (25) has a heat insulating layer (17) made of a heat insulating material and a sound absorbing layer (18) made of a sound absorbing material. The covering member (25) has a two-layer structure of a heat insulating layer (17) and a sound absorbing layer (18).

  The heat insulating material is constituted by a vacuum heat insulating material. In addition, you may use materials (for example, urethane) other than a vacuum heat insulating material for a heat insulating material. As the heat insulating material, a material having no air permeability or a material having low air permeability is suitable. On the other hand, the sound absorbing material is made of glass wool. In addition, you may use materials (for example, felt, rock wool) other than glass wool as a sound-absorbing material. As the sound absorbing material, a material having good air permeability is suitable.

  The covering member (25) includes a first member (26) covering the sides of the compressor (30) and the accumulator (31), and a second member (27) covering the upper sides of the compressor (30) and the accumulator (31). It consists of and. The height of the first member (26) is higher than the sum of the height of the compressor (30) and the depth of the guide portion (8). The length of the first member (26) is approximately equal to the circumferential length of the guide portion (8).

  The second member (27) is formed in a disc shape. The second member (27) is formed with a first insertion hole (27a) through which the discharge pipe (21) is inserted and a second insertion hole (27b) through which the connection pipe (23) is inserted. The size of the second member (27) is substantially equal to the outer peripheral shape of the guide portion (8).

  In the covering member (25), a plurality of convex portions (7) are formed on the surface of the sound absorbing layer (18). The convex part (7) is continuously formed on the surface of the sound absorbing layer (18). That is, the inner surface of the sound absorbing layer (18) is formed in a corrugated uneven shape. The unevenness may be formed unevenly. Further, the convex portion (7) may be constituted by a plurality of warts formed discontinuously on the inner surface of the sound absorbing layer (18).

  In a state where the covering member (25) surrounds the compressor (30) and the accumulator (31), each convex portion (7) constitutes a protruding portion (7) protruding from the inner surface of the covering member (25). The tip of the convex portion (7) is in contact with the compressor (30) and the accumulator (31).

  In this embodiment, as described above, when the covering member (25) is installed, an air layer (19) is formed between the covering member (25) and the compressor (30). For this reason, since the vibration of the compressor (30) is not directly propagated to the covering member (25), the vibration of the compressor (30) is directly propagated to the covering member (25). The vibration propagated to the covering member (25) is significantly reduced. Therefore, since it is not necessary to secure the thickness of the sound absorbing layer (18) in order to attenuate the transmitted vibration, the thickness of the sound absorbing layer (18) is reduced.

  Here, the attachment procedure of the covering member (25) will be described. In attaching the covering member (25), the first member (26) is first attached. The first member (26) is fitted into the guide portion (8) while being bent into a cylindrical shape by the operator. When the first member (26) is fitted into the guide portion (8), air is interposed between the first member (26) and the compressor (30) or between the first member (26) and the accumulator (31). A layer (19) is formed. The air layer (19) is formed simply by providing the covering member (25) according to the guide portion (8).

  Subsequently, the second member (27) is placed on the upper end of the first member (26). The second member (27) is installed with the discharge pipe (21) inserted through the first insertion hole (27a) and the connection pipe (23) inserted through the second insertion hole (27b). When the second member (27) is installed, an air layer (19) is formed between the second member (27) and the compressor (30) or between the second member (27) and the accumulator (31). The

  In this embodiment, since the protruding portion (7) protrudes from the inner surface of the covering member (25), the gap between the compressor (30) and the covering member (25) is the protruding portion (7). Secured by. In this embodiment, the guide part (8) of the casing (35) of the outdoor unit (11) and the protruding part (7) of the covering member (25) constitute the air layer forming means. In addition, as an air layer formation means, at least one of a guide part (8) and a protrusion part (7) should just be.

  When the above operations are completed, the mounting operation of the covering member (25) is completed. Before installing the second member (27), install a heat insulating material between the compressor (30) and the accumulator (31) to insulate the compressor (30) and the accumulator (31) from each other. Also good.

  In the refrigeration apparatus (10) of this embodiment, the sound generated by the compressor (30) first passes through the air layer (19). In the air layer (19), a part of sound energy is converted into heat energy, so that the sound is absorbed. Subsequently, in the sound absorbing layer (18), part of the sound energy that has passed through the air layer (19) is converted into the heat energy of the sound absorbing material and the air in the air gap, thereby absorbing the sound. The heat insulation layer (17) is insulated by reflecting a part of the sound that has passed through the sound absorption layer (18). Thus, in this embodiment, the sound emitted from the compressor (30) is absorbed by the air layer (19) and the sound absorbing layer (18) and is sound-insulated by the heat insulating layer (17). Therefore, the sound emitted from the compressor (30) is significantly reduced before it is propagated outside the covering member (25).

  Moreover, in the refrigeration apparatus (10) of this embodiment, the compressor (30) is covered with a covering member (25) having a heat insulating layer (17). For this reason, since it is suppressed that the calorie | heat amount of the discharge refrigerant | coolant of a compressor (30) reduces by the heat radiation from the surface of a compressor (30), operating efficiency can be improved.

-Effect of the embodiment-
In the present embodiment, the air layer (19) is provided between the covering member (25) and the compressor (30) by the guide portion (8) and the projecting portion (7) which are air layer forming means (7, 8). By forming, the vibration of the compressor (30) is prevented from propagating directly to the covering member (25).

  By the way, as a structure for stopping heat flow, an open cell structure in which bubbles are continuously formed (for example, glass wool) is not suitable for the heat insulating material. As the heat insulating material, a vacuum heat insulating material or a closed cell structure (for example, urethane) that is independent without being connected with internal bubbles is suitable. On the other hand, an open cell structure in which an air flow is formed is suitable for the sound absorbing material. Thus, the structure required for heat insulation and the structure required for sound absorption are incompatible structures. Therefore, in order to obtain both effects of heat insulation and sound absorption by the covering member (25), the heat insulation layer (17) and the sound absorption layer (18) are essential.

  However, conventionally, since the covering member (25) was provided so as to come into contact with the compressor (30), vibration propagated from the compressor (30) to the covering member (25) was relatively large. . For this reason, in order to reduce the vibration propagated in the covering member (25), the thickness of the sound absorbing layer (18) is relatively large.

  On the other hand, in this embodiment, since the air layer (19) is provided between the covering member (25) and the compressor (30), the vibration of the compressor (30) is applied to the covering member (25). Compared with the case of direct propagation, the vibration propagated to the covering member (25) is greatly reduced. For this reason, since it is not necessary to secure the thickness of the sound absorbing layer (18) in order to attenuate the vibration that causes noise, the thickness of the sound absorbing layer (18) can be reduced. Therefore, since the covering member (25) can be thinned, the volume occupied by the covering member (25) can be reduced, and the air conditioner (10) can be made compact.

  Moreover, in this embodiment, the clearance gap between a compressor (30) and a coating | coated member (25) is ensured by the protrusion part (7). By the way, the size of the compressor (30) has individual differences depending on the assembly accuracy of the compressor (30). For this reason, even if the covering member (25) is provided at a fixed position so that the air layer (19) is formed, the covering member (25) may come into contact with the compressor (30). In the present embodiment, as described above, the gap between the compressor (30) and the covering member (25) is ensured by the protrusion (7). Therefore, an air layer (19) can be reliably formed between the compressor (30) and the covering member (25) regardless of individual differences in the size of the compressor (30).

  In the present embodiment, the protrusion (7) is made of a sound absorbing material so that the vibration of the compressor (30) is attenuated before propagating to the sound absorbing layer (18). For this reason, it can suppress that the vibration of a compressor (30) propagates to a covering member (25) via the member for ensuring the crevice between a compressor (30) and a covering member (25). it can.

  In the present embodiment, an air layer (19) is formed between the covering member (25) and the compressor (30) only by providing the covering member (25) in accordance with the guide portion (8). I have to. For this reason, since it is not necessary to adjust the position of the covering member (25) when the covering member (25) is provided, an air layer (19) is easily formed between the covering member (25) and the compressor (30). Can be formed.

-Modification 1 of embodiment-
A first modification of the embodiment will be described. In the first modification, the projecting portion (7) is constituted by a cylindrical fin collar (7). As shown in FIG. 4, the fin collar (7) is erected on a metal layer (42) formed separately from the heat insulating layer (17) and the sound absorbing layer (18). The metal layer (42) is made of, for example, an aluminum alloy, and is laminated inside the sound absorbing layer (18). A plurality of fin collars (7) are erected on the metal layer (42).

  In this modification, the area where the protrusion (7) contacts the compressor (30) becomes relatively small by configuring the protrusion (7) with the cylindrical fin collar (7). For this reason, the vibration of the compressor (30) propagated to the fin collar (7) becomes minute. Therefore, the vibration of the compressor (30) transmitted to the covering member (25) through the fin collar (7) is suppressed.

-Modification 2 of embodiment-
A second modification of the embodiment will be described. In the second modification, the projecting portion (7) is formed in a dimple shape as shown in FIG. The protrusion (7) is formed on the metal layer (42) formed separately from the heat insulating layer (17) and the sound absorbing layer (18). The metal layer (42) is made of, for example, an aluminum alloy, and is laminated inside the sound absorbing layer (18). A plurality of protrusions (7) are continuously formed on the metal layer (42).

—Modification 3 of Embodiment—
A modification 3 of the embodiment will be described. In the third modification, the projecting portion (7) is constituted by a projecting member (7) formed separately from the heat insulating layer (17) and the sound absorbing layer (18). As shown in FIG. 6, the protruding member (7) is configured as a spring-like member (7) whose base end is connected to the heat insulating layer (17). The spring-like member (7) is constituted by a coil spring. The spring-like member (7) penetrates the sound absorbing layer (18) and protrudes from the inner surface of the sound absorbing layer (18).

  In this modification, since the vibration of the compressor (30) is absorbed by the spring-like member (7), the vibration of the compressor (30) is attenuated before propagating to the sound absorbing layer (18). Therefore, it is possible to suppress the vibration of the compressor (30) from being propagated to the covering member (25) through the protrusion (7). In addition, it is good to use a small spring constant with a small damping ratio for a spring-like member (7).

  As the protruding member (7), a needle-like member (7) may be used instead of the spring-like member (7). In this case, since the area where the needle-like member (7) contacts the compressor (30) is minute, the vibration of the compressor (30) transmitted to the needle-like member (7) is minute. Therefore, the vibration of the compressor (30) transmitted to the covering member (25) via the needle-like member (7) is suppressed.

-Modification 4 of the embodiment-
Modification 4 of the embodiment will be described. In this modification 4, the protrusion (7) is constituted by a double-sided tape (7) as shown in FIG. The double-sided tape (7) has one surface attached to the compressor (30) or the accumulator (31) and the other surface attached to the inner surface of the sound absorbing layer (18). The double-sided tape (7) forms an air layer (19) by maintaining an interval between the compressor (30) or the accumulator (31) and the sound absorbing layer (18).

<< Other Embodiments >>
About the said embodiment, it is good also as following structures.

  About the said embodiment, you may provide a coating | coated member (25) so that only a compressor (30) may be covered.

  Moreover, about the said embodiment, you may provide the sound insulation layer comprised with the sound insulation material between the heat insulation layer (17) and the sound absorption layer (18). For the sound insulating material, a relatively high density member such as rubber is suitable.

  Moreover, about the said embodiment, a heat insulation layer (17) may be arrange | positioned inside a sound absorption layer (18), and a heat insulation layer (17) may be exposed to an air layer (19). In this case, a sound insulation layer may be provided outside the sound absorption layer (18).

  Moreover, about the said embodiment, the compressor (30) may be comprised as a low-pressure dome type compressor.

  In addition, as shown in FIG. 8, the guide part (8) is formed by fixing the member (45) in which the groove | channel was formed in the bottom face part (43) in a casing (35) by screwing or welding. May be.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or its use.

  As described above, the present invention is useful for a refrigeration apparatus including a member that covers a compressor.

It is a schematic block diagram of the air conditioning apparatus which concerns on embodiment of this invention. It is a longitudinal cross-sectional view of the coating | coated member which concerns on embodiment of this invention. It is a cross-sectional view of a covering member according to an embodiment of the present invention. It is sectional drawing of the coating | coated member which concerns on the modification 1 of embodiment of this invention. It is sectional drawing of the coating | coated member which concerns on the modification 2 of embodiment of this invention. It is sectional drawing of the coating | coated member which concerns on the modification 3 of embodiment of this invention. It is sectional drawing of the coating | coated member which concerns on the modification 4 of embodiment of this invention. It is sectional drawing of the bottom face part of the casing of the outdoor unit which concerns on other embodiment.

Explanation of symbols

7 Protruding part 8 Guide part 10 Air conditioner (refrigeration equipment)
DESCRIPTION OF SYMBOLS 17 Heat insulation layer 18 Sound absorption layer 19 Air layer 20 Refrigerant circuit 25 Cover member 30 Compressor 31 Accumulator 35 Casing

Claims (7)

A refrigerant circuit (20) provided with a compressor (30);
A covering member (25) covering the periphery of the compressor (30),
The covering member (25) is a refrigeration apparatus in which a heat insulating layer (17) constituted by a heat insulating material and a sound absorbing layer (18) constituted by a sound absorbing material are laminated,
A refrigeration apparatus comprising air layer forming means (7, 8) for forming an air layer (19) between the covering member (25) and the compressor (30). In claim 1,
The covering member (25) is, as the air layer forming means (7, 8), a protruding portion (7 that protrudes from the inner surface of the covering member (25) so that the tip contacts the surface of the compressor (30). A refrigeration apparatus comprising: In claim 2,
In the covering member (25), the sound absorbing layer (18) is formed inside the heat insulating layer (17) and exposed to the air layer (19),
The refrigeration apparatus, wherein the protrusion (7) is constituted by a convex portion formed on an inner surface of the sound absorbing layer (18). In claim 2,
The refrigeration apparatus, wherein the protruding portion (7) is constituted by a protruding member formed separately from the heat insulating layer (17) and the sound absorbing layer (18). In claim 4,
The refrigeration apparatus, wherein the protruding member is constituted by a spring-like member, a needle-like member, or a tubular member. In any one of claims 1 to 5,
A casing (35) in which the compressor (30) is installed;
A covering member (25) provided to surround the side surface of the compressor (30) as the air layer forming means (7, 8) is provided on the bottom surface portion in the casing (35) and the compressor (30). A refrigeration apparatus comprising a guide portion (8) for guiding to a position where a gap is formed between the two. In any one of Claims 1 thru | or 6,
In the refrigerant circuit (20), an accumulator (31) is provided on the suction side of the compressor (30),
The said covering member (25) is provided so that the said accumulator (31) may be covered collectively with the said compressor (30).

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