Refrigeration cycle device

Abstract

A refrigeration cycle device is provided with: a plurality of ducts constituting a flow path through which a refrigerant flows; and a holder that binds and holds the plurality of pipes. The plurality of ducts include a first duct through which a relatively high-pressure refrigerant flows and a second duct through which a refrigerant lower than the high-pressure refrigerant flows. The holder has: a first holding part for holding the first duct; and a second holding part which is made of a material different from that of the first holding part and holds the second pipe.

Description

Technical Field

[0001] An embodiment of the present invention relates to a refrigeration cycle device. Background Art

[0002] A refrigeration cycle device such as an air conditioner, for example, includes an outdoor unit and an indoor unit. The outdoor unit and the indoor unit are connected by a refrigerant flow path for refrigerant circulation. The pipes constituting the refrigerant flow path are arranged in a complex manner by branching, merging, etc. Stress caused by vibration is generated in the pipes. In particular, the pipe connected to the compressor of the outdoor unit is subjected to large vibrations from the compressor, and the stress caused by the vibration is also likely to increase. In order to prevent damage to the pipe caused by the stress, it is necessary to suppress the pipe stress below the allowable value. The pipe stress can be reduced by routing the pipe. However, in this case, additional space for piping must be ensured according to the amount of routing, which becomes a problem in achieving miniaturization of the device.

[0003] Therefore, it is required to suppress the vibration of the pipe and reduce the pipe stress without routing the pipe like this. The refrigerant flowing in the pipe will change into a gas phase, a gas-liquid two-phase state, a liquid phase refrigerant, etc. Therefore, the refrigerant pressure in these states must be considered to achieve the vibration suppression of the pipe.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 6-50470

[0007] Patent Document 2: Japanese Patent Application Publication No. 2005-241236

[0008] Patent Document 3: International Publication No. 2013 / 46633 Summary of the invention

[0009] Technical problem to be solved by the invention

[0010] The present invention has been made in view of the above situation, and an object of the present invention is to provide a refrigeration cycle apparatus capable of appropriately suppressing vibration of a pipe regardless of the state of a refrigerant flowing in the pipe.

[0011] Solutions for solving the above technical problems

[0012] A refrigeration cycle device according to one embodiment includes: a plurality of pipes constituting a flow path for a refrigerant to flow; and a holder for bundling and holding the plurality of pipes. The plurality of pipes include a first pipe for a relatively high-pressure refrigerant to flow and a second pipe for a refrigerant having a lower pressure than the high-pressure refrigerant to flow. The holder includes: a first holding portion for holding the first pipe; and a second holding portion made of a material different from that of the first holding portion for holding the second pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a circuit diagram schematically showing a refrigeration cycle of the air conditioner according to the first embodiment.

[0014] Figure 2 This is a diagram schematically showing a state in which pipes are held together by the holder according to the first embodiment.

[0015] Figure 3 It is a perspective view schematically showing the structure of the holder according to the first embodiment.

[0016] Figure 4 This is a perspective view schematically showing a state in which pipes are held together by the holder according to the first embodiment.

[0017] Figure 5 It is a perspective view schematically showing the structure of a holder according to the second embodiment.

[0018] Figure 6 It is a perspective view schematically showing the structure of a first holding portion of a holder according to a second embodiment.

[0019] Figure 7 It is a perspective view schematically showing the structure of the second holding portion of the holder according to the second embodiment.

[0020] Figure 8 This is a perspective view schematically showing a state in which pipes are held together by a holder according to a second embodiment.

[0021] Fig. 9 This is a perspective view schematically showing a state in which pipes are held together by a holder according to a third embodiment.

[0022] Fig.10 It is a perspective view schematically showing the structure of a first holding portion of a holder according to a third embodiment.

[0023] Fig.11 It is a perspective view schematically showing the structure of the second holding portion of the holder according to the third embodiment. DETAILED DESCRIPTION

[0024] Below, refer to Figures 1 to 11 An implementation method will be described.

[0025] (First embodiment)

[0026] Figure 1 1 is a circuit diagram schematically showing a refrigeration cycle of an air conditioner 1 according to the present embodiment. The air conditioner 1 is a device that performs air conditioning through the refrigeration cycle and is an example of a refrigeration cycle device. However, the refrigeration cycle device is not limited to such an air conditioner 1, and can be applied as a refrigerator, a water-cooled heat source machine, an air-cooled heat pump cooling unit, a condensing unit, etc. The air conditioner 1 includes a compressor 2, a four-way valve 3, an outdoor heat exchanger 4, an outdoor blower 400, an expansion device 5, an indoor heat exchanger 6, and an indoor blower 600 as main components.

[0027] like Figure 1 As shown, the discharge side of the compressor 2 is connected to the first port 3a of the four-way valve 3. The second port 3b of the four-way valve 3 is connected to the outdoor heat exchanger 4. The outdoor heat exchanger 4 is connected to the indoor heat exchanger 6 via the expansion device 5. The indoor heat exchanger 6 is connected to the third port 3c of the four-way valve 3. The fourth port 3d of the four-way valve 3 is connected to the suction side of the compressor 2 via the accumulator 8.

[0028] The refrigerant circulates in a circulation circuit 7 from the discharge side of the compressor 2 via the outdoor heat exchanger 4, the expansion device 5, the indoor heat exchanger 6, and the accumulator 8 to the suction side of the compressor 2. As the refrigerant, a chlorine-free refrigerant is preferably used, for example, R32, R448A, R449A, R449B, R407G, R407H, R449C, R454A, R454B, R456A, R516A, R460B, R463A, R744, HC refrigerants, HFO refrigerants such as R1234yf, etc. can be used.

[0029] For example, when the air conditioner 1 is operated in the cooling mode, the four-way valve 3 is switched so that the first port 3a is connected to the second port 3b, and the third port 3c is connected to the fourth port 3d. When the operation of the air conditioner 1 is started in the cooling mode, the high-temperature and high-pressure gas-phase refrigerant compressed by the compressor 2 is discharged to the circulation circuit 7. The discharged gas-phase refrigerant is guided to the outdoor heat exchanger 4 functioning as a condenser (radiator) via the four-way valve 3.

[0030] The gas-phase refrigerant guided to the outdoor heat exchanger 4 is condensed by heat exchange with the air (outside air) sucked by the outdoor blower 400, and changes into a high-pressure liquid-phase refrigerant. The high-pressure liquid-phase refrigerant is decompressed and changes into a low-pressure gas-liquid two-phase refrigerant in the process of passing through the expansion device 5. The gas-liquid two-phase refrigerant is guided to the indoor heat exchanger 6 that functions as an evaporator (heat absorber), and exchanges heat with the air (inside air) sucked by the indoor blower 600 in the process of passing through the indoor heat exchanger 6.

[0031] As a result, the gas-liquid two-phase refrigerant takes heat from the air and evaporates, changing into a low-temperature and low-pressure gas-phase refrigerant. The air passing through the indoor heat exchanger 6 is cooled by the evaporation latent heat of the liquid-phase refrigerant and is sent as cold air by the indoor blower 600 to the place where air conditioning (cooling) is to be performed.

[0032] The low-temperature, low-pressure gas-phase refrigerant that has passed through the indoor heat exchanger 6 is guided to the accumulator 8 via the four-way valve 3. In the case where the liquid-phase refrigerant that has not been completely evaporated is mixed in the refrigerant, it is separated into the liquid-phase refrigerant and the gas-phase refrigerant. The low-temperature, low-pressure gas-phase refrigerant separated from the liquid-phase refrigerant is sucked from the accumulator 8 into the compressor 2, and is compressed again into the high-temperature, high-pressure gas-phase refrigerant in the compressor 2 and discharged to the circulation circuit 7.

[0033] On the other hand, when the air conditioner 1 is operated in the heating mode, the four-way valve 3 is switched so that the first port 3a is connected to the third port 3c, and the second port 3b is connected to the fourth port 3d. When the operation of the air conditioner 1 is started in the heating mode, the high-temperature and high-pressure gas-phase refrigerant discharged from the compressor 2 is guided to the indoor heat exchanger 6 via the four-way valve 3 to perform heat exchange with the air passing through the indoor heat exchanger 6. In this case, the indoor heat exchanger 6 functions as a condenser.

[0034] As a result, the gas phase refrigerant passing through the indoor heat exchanger 6 exchanges heat with the air (inside air) sucked by the indoor blower 600 and condenses to become a high-pressure liquid phase refrigerant. The air passing through the indoor heat exchanger 6 is heated by the heat exchange with the gas phase refrigerant and is sent as warm air by the indoor blower 600 to a place where air conditioning (heating) is to be performed.

[0035] The high-temperature liquid-phase refrigerant that has passed through the indoor heat exchanger 6 is guided to the expansion device 5, and is decompressed in the process of passing through the expansion device 5 and changes into a low-pressure gas-liquid two-phase refrigerant. The gas-liquid two-phase refrigerant is guided to the outdoor heat exchanger 4 that functions as an evaporator, and is heat-exchanged with the air (outside air) sucked in by the outdoor blower 400 to evaporate and change into a low-temperature and low-pressure gas-phase refrigerant. The low-temperature and low-pressure gas-phase refrigerant that has passed through the outdoor heat exchanger 4 is sucked into the compressor 2 via the four-way valve 3 and the accumulator 8, and is compressed again in the compressor 2 into a high-temperature and high-pressure gas-phase refrigerant and discharged to the circulation circuit 7.

[0036] In the present embodiment, the air conditioner 1 is operable in either the cooling mode or the heating mode, but the air conditioner 1 may be, for example, a cooling-only machine or a heating-only machine that is operable only in either the cooling mode or the heating mode.

[0037] In the above-mentioned air conditioner 1, the circulation loop 7 is composed of a plurality of pipes. These pipes are continuous while branching or merging from the discharge side of the compressor 2 through the outdoor heat exchanger 4, the expansion device 5, the indoor heat exchanger 6 and the accumulator 8 to the suction side of the compressor 2. The pipes arranged close to each other are held by a retainer. The retainer bundles and holds the pipes arranged close to each other, specifically, the close portions of these pipes.

[0038] Figure 2 9 is a diagram schematically showing a state in which the pipes 71 and 72 are held together by the holder 9. Figure 2 In the example shown, two pipes 71 and 72 (one is referred to as the first pipe 71 and the other is referred to as the second pipe 72) are held at two locations by retainers 9a and 9b. The first pipe 71 and the second pipe 72 constitute a part of the circulation circuit 7. The first pipe 71 is a flow path for relatively high-pressure refrigerant in the plurality of pipes 71 and 72 to flow. The second pipe 72 is a flow path for relatively low-pressure refrigerant in the plurality of pipes 71 and 72, more directly, a refrigerant with a lower pressure than the high-pressure refrigerant flowing in the first pipe 71 to flow. That is, the pressure of the refrigerant flowing in the first pipe 71 is higher than the pressure of the refrigerant flowing in the second pipe 72. For example, the first pipe 71 is connected to the discharge port of the compressor 2 and is used as a refrigerant flow path for guiding a high-temperature and high-pressure gas-phase refrigerant to the outdoor heat exchanger 4 or the indoor heat exchanger 6. The second pipe 72 is connected to the suction port of the compressor 2 and is used as a refrigerant flow path for guiding a low-temperature and low-pressure gas-phase refrigerant from the accumulator 8. In the example shown in the figure, the inner diameter and the outer diameter of the first duct 71 are smaller than the inner diameter and the outer diameter of the second duct 72. However, the relationship between the sizes may be opposite or the same.

[0039] The first pipe 71 includes a straight pipe portion 71a in its flow path. The second pipe 72 includes a straight pipe portion 72a in its flow path. The straight pipe portions 71a and 72a are portions that are continuous in a straight line in each pipe 71 and 72. The first pipe 71 and the second pipe 72 are arranged so that the straight pipe portions 71a and 72a are parallel to each other. The straight pipe portions 71a and 72a correspond to the close portions of the first pipe 71 and the second pipe 72.

[0040] One of the two retainers 9a and 9b is disposed on one side of the straight tube portions 71a and 72a (at the Figure 2 In the example shown, the other retainer 9b is disposed on the other side of the straight tube portion 71a, 72a (on the upper side). Figure 2 In the example shown, the ends 71c and 72c of the straight pipe portions 71a and 72a of the first pipe 71 and the second pipe 72 are held by the holder 9a. In addition, the ends 71c and 72c of the straight pipe portions 71a and 72a of the first pipe 71 and the second pipe 72 are held by the holder 9b. Thus, the first pipe 71 and the second pipe 72 are arranged in a state where the straight pipe portions 71a and 72a are bound and held by the holders 9a and 9b.

[0041] In addition, the number of the holders 9 holding the first pipe 71 and the second pipe 72 may be one or more. For example, the pipes 71 and 72 may be held by an appropriate number of holders 9 according to the distance from the compressor 2, the pipe length, etc. In addition, the holding position of the holder 9 may not be the straight pipe portion 71a, 72a.

[0042] Next, the structure of these holders 9a and 9b will be described. In this embodiment, the structure of these holders 9a and 9b is the same. Therefore, they are collectively referred to as the holder 9 in the following description.

[0043] exist Figure 3 and Figure 4 The structure of the holder 9 is schematically shown in FIG. Figure 3 It is a perspective view schematically showing the structure of the holder 9 . Figure 4 It is a perspective view schematically showing a state where the first duct 71 and the second duct 72 are held by the holder 9 .

[0044] like Figure 3As shown, the retainer 9 has a first surface 901 and a second surface 902 as main surfaces, and a third surface 903 connecting them, and the overall shape is flat. The illustrated shape is an example, and the overall shape of the retainer is not limited to this. The first surface 901 and the second surface 902 extend approximately in parallel and are arranged to keep a distance from each other. On the third surface 903, a concave depression (groove) 904 is formed with a substantially constant width and depth throughout the entire circumference. The width of the groove 904 is the dimension in the direction of the distance between the first surface 901 and the second surface 902, that is, the vertical direction (normal direction) in the main surface. The depth of the groove 904 is the dimension in the direction orthogonal to both the width direction and the circumferential direction (the continuous direction of the groove 904) of the groove 904. The width and depth of the groove 904 can be arbitrarily set according to the width and thickness of the coupling member 93 described later.

[0045] The holder 9 has two parts, namely, a first holding portion 91 and a second holding portion 92. The first holding portion 91 is a portion of the holder 9 that holds the first duct 71. The second holding portion 92 is a portion of the holder 9 that holds the second duct 72.

[0046] The first holding portion 91 has a through hole (hereinafter referred to as the first through hole) 91a that penetrates through two surfaces corresponding to the first surface 901 and the second surface 902 of the holding member 9. The first pipe 71 is inserted through the first through hole 91a. The hole diameter of the first through hole 91a is set to be less than the outer diameter of the first pipe 71 (for example, substantially the same size). Thus, the first holding portion 91 makes the peripheral surface 91b of the first through hole 91a contact the outer peripheral surface 71d of the first pipe 71 to hold the first pipe 71. The surface portion of the first holding portion 91 corresponding to the third surface 903 of the holding member 9 is intermittent, and a slit (hereinafter referred to as the first slit) 91c is provided in a part of the surface portion. The first slit 91c extends in the direction of the distance between the first surface 901 and the second surface 902 of the holding member 9, and is connected to the first through hole 91a.

[0047] When the first pipe 71 is held, the first through hole 91a is formed so that the through direction is along the first pipe 71 (at Figure 2 In the example shown, the first slit 91c is pressed against the outer peripheral surface 71d of the first pipe 71. From this state, the first slit 91c is expanded to allow the first pipe 71 to enter the first through hole 91a. Figure 4 As shown, the first duct 71 is inserted into the first through hole 91a, and the peripheral surface 91b of the first through hole 91a contacts the outer peripheral surface 71d of the first duct 71, so that the first duct 71 is held in the first through hole 91a.

[0048] The second holding portion 92 has a through hole (hereinafter referred to as the second through hole) 92a that penetrates through two surfaces corresponding to the first surface 901 and the second surface 902 of the holding member 9. The second pipe 72 is inserted through the second through hole 92a. The hole diameter of the second through hole 92a is set to be less than the outer diameter of the second pipe 72 (for example, substantially the same size). Thus, the second holding portion 92 makes the peripheral surface 92b of the second through hole 92a contact the outer peripheral surface 72d of the second pipe 72 to hold the second pipe 72. The face portion of the second holding portion 92 corresponding to the third surface 903 of the holding member 9 is intermittent, and a slit (hereinafter referred to as the second slit) 92c is provided in a part of the face portion. The second slit 92c extends in the direction of the distance between the first surface 901 and the second surface 902 of the holding member 9, and is connected to the second through hole 92a.

[0049] When the second pipe 72 is held, the second through hole 92a is formed so that the through direction is along the second pipe 72 (at Figure 2 In the example shown, the second slit 92c is pressed against the outer peripheral surface 72d of the second pipe 72. From this state, the second slit 92c is expanded to allow the second pipe 72 to enter the second through hole 92a. Figure 4 As shown, the second duct 72 is inserted into the second through hole 92a, and the peripheral surface 92b of the second through hole 92a contacts the outer peripheral surface 72d of the second duct 72, so that the second duct 72 is held in the second through hole 92a.

[0050] The first holding portion 91 and the second holding portion 92 are assembled so that the penetration directions of the first through hole 91a and the second through hole 92a are parallel to each other. Figure 3 In the illustrated example, the first holding portion 91 and the second holding portion 92 respectively include flat surface portions 91 d and 92 d that can abut against each other.

[0051] And, if Figure 4 As shown in FIG. 1 , the first holding portion 91 and the second holding portion 92 are assembled in a state where the flat surface portions 91d and 92d are in contact with each other, and are connected by a connecting member 93. This is a member that connects the first holding portion 91 and the second holding portion 92 in the assembled state. For example, a Ty-Rap, a metal band, etc. can be used as the connecting member 93. Figure 4As shown, the first holding portion 91 and the second holding portion 92 may be combined into an assembled state by using a coupling component 93 on the basis of or instead of the above-mentioned bonding based on an adhesive. In this way, the assembled state of the first holding portion 91 and the second holding portion 92 can be firmly maintained. The coupling component 93 is mounted in the groove 904 of the retainer 9. In this way, it is easy to locate the coupling position of the coupling component 93, and it is possible to suppress the coupling component 93 from falling off the retainer 9. In addition, the coupling component 93 does not need to protrude significantly from the third surface 903 of the retainer 9. However, it is also possible to omit the groove 904 from the retainer 9 and directly mount the coupling component 93 on the third surface 903.

[0052] Instead of or in addition to such connection by the connection member 93 , the first holding portion 91 and the second holding portion 92 may be integrally assembled by bonding the flat surface portions 91 d and 92 d with an adhesive or the like.

[0053] The first holding portion 91 and the second holding portion 92 are made of a material that allows the slits 91c and 92c to elastically deform and elastically recover when holding the pipes 71 and 72. On the other hand, the first holding portion 91 and the second holding portion 92 are made of different materials that allow for such elastic deformation and recovery.

[0054] For example, at least one of the first holding portion 91 and the second holding portion 92 may be made of a material having temperature dependence on the attenuation ratio (attenuation rate). In this case, the materials of the first holding portion 91 and the second holding portion 92 can be arbitrarily selected according to the operating temperature range of the pipes 71 and 72 held by each.

[0055] In the case where a high-temperature and high-pressure refrigerant flows in the first pipe 71 and a low-temperature and low-pressure refrigerant flows in the second pipe 72 compared to the refrigerant flowing in the first pipe 71, the first retaining portion 91 that retains the first pipe 71 and the second retaining portion 92 that retains the second pipe 72 can be respectively composed of a combination of the following materials. As one combination, the material of the first retaining portion 91 is butyl rubber whose attenuation ratio increases above normal temperature, and the material of the second retaining portion 92 is butyl rubber whose attenuation ratio increases below normal temperature. In addition, as another combination, the material of the first retaining portion 91 is EPDM (ethylene propylene diene monomer rubber) with low temperature dependence, and the material of the second retaining portion 92 is butyl rubber whose attenuation ratio increases below normal temperature. Normal temperature is the temperature of the atmosphere (external air) of the first pipe 71 and the second pipe 72, which is about 5°C to 35°C (about 20°C±15°C).

[0056] In addition, it is not necessary to make both the first holding portion 91 and the second holding portion 92 into such a high attenuation ratio material (high attenuation material). For example, if one of the first holding portion 91 and the second holding portion 92 is made of a high attenuation material such as rubber, the other may not be a high attenuation material, but may be resin, metal, etc.

[0057] Thus, according to the present embodiment, the first holding portion 91 and the second holding portion 92 are respectively made of different materials. Specifically, at least one of the first holding portion 91 and the second holding portion 92 can be made of a material having temperature dependence with respect to the attenuation ratio within the use temperature range of the pipes 71 and 72 respectively held. Therefore, for example, even if the use temperature range of the first pipe 71 through which a high-temperature and high-pressure gas-phase refrigerant flows is different from the use temperature range of the second pipe 72 through which a low-temperature and low-pressure gas-phase refrigerant flows, the material of the first holding portion 91 and the material of the second holding portion 92 can be appropriately selected.

[0058] Thus, even when the operating temperature ranges of the pipes 71 and 72 are different, the vibration reduction effect of the retainer 9 can be improved. Compared with the low-pressure pipe, the temperature of the flowing refrigerant in the high-pressure pipe is higher, and the temperature of the pipe surface is also likely to become higher. Therefore, the part of the retainer 9 that retains the high-pressure pipe (the first retaining part 91) is made of a material with a high attenuation ratio at high temperatures, and the part that retains the low-pressure pipe (the second retaining part 92) is made of a material with a high attenuation ratio at low temperatures. By forming the retaining parts 91 and 92 with these materials, the vibration reduction effect of the retainer 9 can be improved.

[0059] As a result, even when, for example, the pipes 71 and 72 are connected to the compressor 2 and are greatly affected by the vibration received from the compressor 2, it is not necessary to route the pipes 71 and 72 to reduce the pipe stress caused by the vibration. That is, even if the length of the pipes 71 and 72 is not extended, the vibration received from the compressor 2 can be absorbed by the retainer 9, and the vibration generated in the pipes 71 and 72 can be suppressed. Therefore, regardless of the state of the refrigerant flowing in the pipes 71 and 72, the vibration of the pipes 71 and 72 can be appropriately suppressed, and the pipe stress caused by the vibration can be reduced. In addition, the miniaturization of the air conditioner 1 as an example of a refrigeration cycle device can be achieved. For example, there are refrigerants with a relatively small GWP value among HFO refrigerants, but such refrigerants are dilute at low pressure. Therefore, when using such a refrigerant with a relatively small GWP value, in order to produce a refrigeration capacity equivalent to that of other refrigerants, there is a tendency that the pipe diameter becomes thicker, and the device as a whole is also easy to be enlarged. Even when the pipe diameter is large, according to the present embodiment, pipe vibration can be suppressed without increasing the pipe length of the pipe, and thus the refrigeration cycle apparatus can be effectively miniaturized.

[0060] In addition, the retainer 9 ( Figure 3 and Figure 4 ) is only an example of a retainer and is not limited to the illustrated form. Other forms of the retainer 9 are described below as the second and third embodiments. As the refrigeration cycle devices of the second and third embodiments, it is assumed that the air conditioner 1 of the first embodiment ( Figure 1 ). Therefore, the description of the air conditioner 1 is omitted below, and the differences between the retainer 9 of the first embodiment and the retainer of the second and third embodiments are described in detail. At this time, the same reference numerals are used for the components that are the same as or similar to the retainer 9.

[0061] (Second embodiment)

[0062] Figures 5 to 8 The structure of the holder 10 according to the second embodiment is schematically shown. Figure 5 It is a perspective view schematically showing the structure of the holder 10 . Figure 6 It is a perspective view schematically showing the structure of the first holding portion 101 of the holder 10 . Figure 7 It is a perspective view schematically showing the structure of the second holding portion 102 of the holder 10 . Figure 8 It is a perspective view schematically showing a state where the first duct 71 and the second duct 72 are held by the holder 10 .

[0063] like Figures 5 to 8 As shown, the holder 10 has a first holding portion 101 for holding the first pipe 71 and a second holding portion 102 for holding the second pipe 72, similarly to the holder 9. The first holding portion 101 has a first through hole 91a for inserting the first pipe 71 and holding the first pipe 71, and a first slit 91c. The second holding portion 102 has a second through hole 92a for inserting the second pipe 72 and holding the second pipe 72, and a second slit 92c.

[0064] The first holding portion 101 and the second holding portion 102 are made of different materials, similar to the holding portions 91 and 92, that can elastically deform and elastically restore the slits 91c and 92c to expand when holding the pipes 71 and 72. For example, at least one of the first holding portion 101 and the second holding portion 102 may be made of a material having a temperature dependency on the attenuation ratio.

[0065] In one example of the combination of the materials of the holding parts 101 and 102, the first holding part 101 is made of butyl rubber whose attenuation ratio increases at a temperature above normal temperature, and the second holding part 102 is made of butyl rubber whose attenuation ratio increases at a temperature below normal temperature. In addition, as another combination, the material of the first holding part 101 is EPDM (ethylene propylene diene monomer rubber) having low temperature dependence, and the material of the second holding part 102 is butyl rubber whose attenuation ratio increases at a temperature below normal temperature. Normal temperature is defined in the same manner as in the first embodiment.

[0066] In addition, it is also possible that both the first holding portion 101 and the second holding portion 102 do not need to be made of such a high attenuation ratio material (high attenuation material) as in the case of the holding portions 91 and 92. For example, if one of the first holding portion 101 and the second holding portion 102 is made of a high attenuation material such as rubber, the other may not be made of a high attenuation material but may be made of resin, metal, or the like.

[0067] In this embodiment, the first holding part 101 and the second holding part 102 have fitting parts 20 and 30 for assembling them with each other. The fitting parts 20 and 30 are parts in the form of convex and concave shapes that can fit with each other. The two holding parts 101 and 102 are assembled by alternately fitting these concave and convex parts in the first holding part 101 and the second holding part 102.

[0068] exist Figure 5 and Figure 6 In the example shown, the first holding portion 101 has two protruding portions 20a protruding from the plane portion 91d and two recessed portions 20b recessed from the plane portion 91d as the fitting portion 20. The two protruding portions 20a are arranged at a predetermined interval at a position close to the first surface 901 of the surface between the first surface 901 and the second surface 902 of the holder 10 in the first holding portion 101. In addition, the two protruding portions 20a are arranged in a manner protruding at a predetermined interval along the through-going direction of the first through-hole 91a. The two recessed portions 20b are arranged at a predetermined interval at a position close to the second surface 902 of the surface between the first surface 901 and the second surface 902 of the holder 10 in the first holding portion 101. In addition, the two recessed portions 20b are arranged in a manner recessed at a predetermined interval along the through-going direction of the first through-hole 91a.

[0069] exist Figure 5 and Figure 7In the example shown, the second holding portion 102 has two protruding portions 30a protruding from the plane portion 92d and two recessed portions 30b recessed from the plane portion 92d as the fitting portion 30. The two protruding portions 30a are arranged at a predetermined interval at a position close to the second surface 902 of the surface between the first surface 901 and the second surface 902 of the holder 10 in the second holding portion 102. In addition, the two protruding portions 30a are arranged in a manner protruding at a predetermined interval along the through-going direction of the second through hole 92a. The two recessed portions 30b are arranged in a manner close to the first surface 901 of the surface between the first surface 901 and the second surface 902 of the holder 10 in the second holding portion 102. In addition, the two recessed portions 30b are arranged in a manner recessed at a predetermined interval along the through-going direction of the second through hole 92a.

[0070] The first holding part 101 and the second holding part 102 are assembled by fitting the convex part 20 a and the concave part 30 b and fitting the concave part 20 b and the convex part 30 a .

[0071] In addition, in the example shown in the figure, the first holding portion 101 and the second holding portion 102 have convex portions 20a, 30a and concave portions 20b, 30b, respectively, but it is also possible that one side has only a convex portion and the other side has only a concave portion that can be engaged with the convex portion. In addition, the number of mutually engaged convex portions and concave portions can be one or more than three.

[0072] In addition, you can Figure 8 As shown in FIG. 1 , the first holding part 101 and the second holding part 102 are assembled by fitting the protrusions 20a and 30a with the recesses 30b and 20b, and then connected by the connecting member 93. The connecting member 93 is attached to the groove 904 of the holder 10.

[0073] According to the present embodiment, by releasing the engagement state of the convex parts 20a, 30a and the concave parts 30b, 20b, the first holding part 101 and the second holding part 102 can be detached from each other. Therefore, the combination of the first holding part 101 and the second holding part 102 can be appropriately changed according to, for example, the operating temperature range and the outer diameter size of the pipes 71, 72. Therefore, the degree of freedom of the combination of the pipes 71, 72 held by the holder 10 can be increased, and the versatility can be improved.

[0074] (Third embodiment)

[0075] Figures 9 to 11 The structure of the holder 11 according to the third embodiment is schematically shown. Fig. 9 It is a perspective view schematically showing a state where the first duct 71 and the second duct 72 are held by the holder 11 . Fig.10It is a perspective view schematically showing the structure of the first holding portion 111 of the holder 11 . Fig.11 It is a perspective view schematically showing the structure of the second holding portion 112 of the holder 11 .

[0076] like Fig. 9 As shown, in the present embodiment, the first pipe 71 and the second pipe 72 are arranged in an orthogonal manner by the straight pipe parts 71a and 72a intersecting each other. Therefore, the first holding part 111 and the second holding part 112 are assembled in a manner that the penetration directions of the first through hole 91a and the second through hole 92a are orthogonal to each other. In addition, the straight pipe parts 71a and 72a may be not orthogonal but obliquely intersecting. In this case, according to the intersection angle of the straight pipe parts 71a and 72a, the first holding part 111 and the second holding part 112 may be assembled in a manner that the penetration directions of the first through hole 91a and the second through hole 92a are obliquely intersecting each other.

[0077] In addition, the retainer 11 is in the form of a roughly cylindrical portion (hereinafter referred to as a roughly cylindrical body) 11a, a roughly hemispherical portion (hereinafter referred to as a roughly hemispherical body) 11b continuous with one axial end of the roughly cylindrical body 11a, and a roughly hemispherical body 11c continuous with the other axial end of the roughly cylindrical body 11a. The retainer 11 can be divided into two at the roughly cylindrical body 11a. The roughly cylindrical body 11a on one side of the division and the roughly hemispherical body 11b continuous therewith constitute the first retainer 111. The roughly cylindrical body 11a on the other side of the division and the roughly hemispherical body 11c continuous therewith constitute the second retainer 112.

[0078] like Figures 9 to 11 As shown, the holder 11 has a first holding portion 111 for holding the first pipe 71 and a second holding portion 112 for holding the second pipe 72, similarly to the holder 9. The first holding portion 111 has a first through hole 91a through which the first pipe 71 is inserted and held, and a first slit 91c communicating with the first through hole 91a. The second holding portion 112 has a second through hole 92a through which the second pipe 72 is inserted and held, and a second slit 92c communicating with the second through hole 92a. The first holding portion 111 and the second holding portion 112 are assembled so that the through directions of the first through hole 91a and the second through hole 92a are orthogonal to each other.

[0079] In addition, the retaining member 11 has a groove 904 for mounting the coupling member 93, similarly to the retaining member 9. Figures 9 to 11In the example shown, two grooves 904a and 904b are formed in the holder 11. The two grooves 904a and 904b are arranged to intersect each other in a staggered manner on the surfaces of the roughly cylindrical body 11a and the roughly hemispherical bodies 11b and 11c. That is, each groove 904a and 904b is continuous in a manner of obliquely crossing the surface of the roughly cylindrical body 11a between the openings 91e at both ends of the first through hole 91a and the openings 92e at both ends of the second through hole 92a from the top of the roughly hemispherical bodies 11b and 11c to reach the top.

[0080] The first retaining portion 111 and the second retaining portion 112 are made of different materials having the following materials, similarly to the retaining portions 91 and 92: materials that allow the slits 91c and 92c to elastically deform and elastically recover in an expandable manner when retaining the pipes 71 and 72. For example, at least one of the first retaining portion 111 and the second retaining portion 112 may be made of a material having temperature dependence with respect to the attenuation ratio. In an example of a combination of materials of the retaining portions 111 and 112, the first retaining portion 111 is made of butyl rubber whose attenuation ratio increases above normal temperature, and the second retaining portion 112 is made of butyl rubber whose attenuation ratio increases below normal temperature. In addition, as another combination, the material of the first retaining portion 111 is EPDM (ethylene propylene diene monomer rubber) having low temperature dependence, and the material of the second retaining portion 112 is butyl rubber whose attenuation ratio increases below normal temperature. Normal temperature is specified in the same manner as in the first embodiment.

[0081] In addition, it is also possible that both the first holding portion 111 and the second holding portion 112 are not made of such a high attenuation ratio material (high attenuation material) as in the case of the holding portions 91 and 92. For example, if one of the first holding portion 111 and the second holding portion 112 is made of a high attenuation material such as rubber, the other may not be made of a high attenuation material but may be made of resin, metal, or the like.

[0082] The first holding part 111 and the second holding part 112 have fitting parts 40 and 50 for assembling them with each other. The fitting parts 40 and 50 are convex or concave parts that can fit with each other. By fitting these parts in the first holding part 111 and the second holding part 112, the two holding parts 111 and 112 can be assembled.

[0083] exist Fig. 9 and Fig.10 In the example shown, the first holding portion 111 has a recessed portion 40b recessed from the flat surface portion 91d. The recessed portion 40b is continuous along the penetration direction of the first through hole 91a over a length corresponding to the outer diameter of the substantially cylindrical body 11a.

[0084] exist Fig. 9 and Fig.11In the example shown, the second holding portion 112 has a convex portion 50a protruding from the flat portion 92d. The convex portion 50a is continuous along a direction orthogonal to the penetration direction of the second through hole 92a, in other words, along a direction corresponding to the penetration direction of the first through hole 91a, over a length corresponding to the outer diameter of the substantially cylindrical body 11a.

[0085] By fitting these recessed portions 40b and convex portions 50a, the first holding portion 111 and the second holding portion 112 are assembled. In the example shown in the figure, the first holding portion 111 has the recessed portion 40b and the second holding portion 112 has the convex portion 50a, but the recessed portion 40b and the convex portion 50a may be reversed. In addition, the recessed portion 40b and the convex portion 50a are continuous along the through-going direction of the first through-hole 91a, but may be continuous along other directions, such as the through-going direction of the second through-hole 92a. In addition, there may be more than two recessed portions 40b and convex portions 50a.

[0086] The first holding portion 111 and the second holding portion 112 may be coupled by the coupling member 93 in a state where the concave portion 40b and the convex portion 50a are fitted together. The coupling member 93 is attached to the grooves 904a and 904b of the holder 11, respectively.

[0087] According to the present embodiment, even when the first pipe 71 and the second pipe 72 are arranged so that the straight pipe portions 71a and 72a are orthogonal to each other, the pipes 71 and 72 can be held at the orthogonal portion by the holder 11. The vibration (roll) generated in the pipes 71 and 72 is likely to be larger at the orthogonal portion than at the parallel portion. In the present embodiment, since the orthogonal portion of the pipes 71 and 72 can be held by the holder 11, the vibration (roll) of the pipes 71 and 72 at the orthogonal portion can be suppressed, and the pipe stress caused by the vibration can be appropriately reduced.

[0088] In addition, similarly to the second embodiment, by releasing the engagement state between the recessed portion 40b and the convex portion 50a, the first retaining portion 111 and the second retaining portion 112 can be detached from each other. Therefore, the combination of the first retaining portion 111 and the second retaining portion 112 can be appropriately changed according to, for example, the operating temperature range and the outer diameter of the pipes 71 and 72.

[0089] The above describes various embodiments of the present invention, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments or their modifications are included in the scope and subject matter of the invention, and are included in the invention described in the claims and their equivalents.

[0090] Description of Reference Numerals

[0091] 1 Air conditioner

[0092] 2 compressor

[0093] 3 Four-way valve

[0094] 4Outdoor heat exchanger

[0095] 5. Expansion device

[0096] 6Indoor heat exchanger

[0097] 7 Circulation loop

[0098] 8 Energy storage device

[0099] 9, 9a, 9b, 10, 11 retaining parts

[0100] 11a Roughly cylindrical

[0101] 11b, 11c roughly hemispherical

[0102] 20, 30, 40, 50 chimeric parts

[0103] 20a, 30a, 50a convex part

[0104] 20b, 30b, 40b concave parts

[0105] 71 Pipeline 1

[0106] 71 a Straight pipe section

[0107] 71 d Outer surface

[0108] 72 Pipeline 2

[0109] 72b straight pipe section

[0110] 72d outer surface

[0111] 91, 101, 111 1st holding part

[0112] 91a 1st through hole

[0113] 91b Circumference

[0114] 91c 1st slit

[0115] 91 d plane

[0116] 91 e opening

[0117] 92, 102, 112 Second holding part

[0118] 92a Second through hole

[0119] 92b Circumference

[0120] 92c 2nd slit

[0121] 92d plane part

[0122] 92e opening

[0123] 93 combined parts

[0124] 901 Page 1

[0125] 902 Page 2

[0126] 903 Page 3

[0127] 904, 904a, 904b slots.

Claims

1. A refrigeration cycle device, characterized in that: have: A plurality of pipes forming a flow path for the refrigerant to flow; and A holder for bundling and holding a plurality of the pipes, The plurality of pipes include a first pipe through which a relatively high-pressure refrigerant flows and a second pipe through which a refrigerant having a lower pressure than the high-pressure refrigerant flows, The holder includes a first holding portion that holds the first pipe and a second holding portion that is made of a material different from that of the first holding portion and holds the second pipe.

2. The refrigeration cycle device according to claim 1, characterized in that: At least one of the first holding portion and the second holding portion is formed of a material having a temperature dependency on the attenuation ratio.

3. The refrigeration cycle device according to claim 1 or 2, characterized in that: The first holding portion has a first through hole through which the first pipe is inserted and held. The second holding portion has a second through hole through which the second pipe is inserted and held. The first holding portion and the second holding portion are assembled so that the penetration directions of the first through-hole and the second through-hole are parallel to or intersecting with each other.

4. The refrigeration cycle device according to claim 3, characterized in that: The first holding portion and the second holding portion each have a fitting portion for assembling them to each other. One of the first holding portion and the second holding portion has at least one of a concave portion and a convex portion as the fitting portion, and the other holding portion has at least one of a convex portion or a concave portion that can fit with the concave portion or the convex portion of the one holding portion as the fitting portion.

5. The refrigeration cycle device according to claim 3, characterized in that: The holding member includes a coupling member for coupling the first holding portion and the second holding portion in an assembled state. The first holding portion and the second holding portion have grooves in which the coupling member is mounted.

Images