CN110621877A - Heat source unit and vibration isolator - Google Patents
Heat source unit and vibration isolator Download PDFInfo
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- CN110621877A CN110621877A CN201780090828.2A CN201780090828A CN110621877A CN 110621877 A CN110621877 A CN 110621877A CN 201780090828 A CN201780090828 A CN 201780090828A CN 110621877 A CN110621877 A CN 110621877A
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- vibration damping
- damping rubber
- vibration
- rubber
- hermetic compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Compressor (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a heat source unit and an insulator. The heat source unit includes a vertical hermetic compressor mounted on a bottom plate of the casing, and an insulator interposed between the hermetic compressor and the bottom plate. The vibration isolator includes: 1 st vibration isolation rubber elastically supporting the hermetic compressor; a 2 nd vibration damping rubber interposed between the 1 st vibration damping rubber and the bottom plate, and supporting the 1 st vibration damping rubber from below; and a partition member that partitions the 1 st vibration damping rubber and the 2 nd vibration damping rubber. The partition member is formed of a material harder than the 1 st vibration isolation rubber and the 2 nd vibration isolation rubber, and the dynamic magnification of the 2 nd vibration isolation rubber is smaller than that of the 1 st vibration isolation rubber.
Description
Technical Field
Embodiments of the present invention relate to a heat source unit having a hermetic compressor and an insulator elastically supporting the hermetic compressor.
Background
The vibration generated when the hermetic compressor compresses the refrigerant is transmitted to the refrigerant pipe and the casing of the outdoor unit, which causes noise. Therefore, in order to suppress noise during operation of the hermetic compressor, it is desirable to cut off vibration transmitted from the hermetic compressor to the refrigerant pipe and the casing as much as possible.
In particular, in recent hermetic compressors of variable operating frequency type, in order to prevent the transmission of vibration, which is increased in a low rotation region including at the time of start-up, to the refrigerant piping, it is necessary to interpose a soft vibration isolation rubber having a high vibration attenuation rate between the hermetic compressor and the bottom plate of the casing, and to absorb the vibration of the hermetic compressor by the vibration isolation rubber.
On the other hand, in the high rotation region, the vibration generated by the hermetic compressor is reduced as compared with the low rotation region, and therefore it is necessary to firmly support the hermetic compressor using hard vibration isolation rubber having a small vibration transmission rate so as not to vibrate the bottom plate of the casing.
Therefore, conventionally, as a countermeasure against vibration in both the low rotation region and the high rotation region of the hermetic compressor, a vibration isolator in which two types of vibration isolation rubbers having different vibration isolation performance are combined is interposed between the hermetic compressor and the bottom plate of the casing.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2007-292021
Patent document 2: japanese laid-open patent publication No. 2008-31882
Disclosure of Invention
Problems to be solved by the invention
In the conventional vibration isolator, the two kinds of vibration isolation rubbers directly contact each other between the hermetic compressor and the bottom plate so as to overlap each other in the vertical direction, and therefore, there is a possibility that a frequency component generated when the upper side vibration isolation rubber vibrates and a frequency component generated when the lower side vibration isolation rubber vibrates are combined.
As a result, the original vibration damping performance of each vibration damping rubber is impaired, and there is room for further improvement in obtaining a desired vibration damping effect.
The purpose of the present invention is to obtain a heat source unit that can cut off the transmission of vibration between two types of vibration isolation rubbers having different vibration isolation properties, and that has excellent vibration isolation properties and high quietness in a hermetic compressor.
Means for solving the problems
The heat source unit of the present embodiment includes: a housing having a bottom plate; a vertical hermetic compressor mounted on the base plate and compressing a refrigerant; and a vibration isolator interposed between the hermetic compressor and the base plate.
The vibration isolator includes: 1 st vibration damping rubber for elastically supporting the hermetic compressor; a 2 nd vibration damping rubber interposed between the 1 st vibration damping rubber and the bottom plate, and supporting the 1 st vibration damping rubber from below; and a partition member that partitions the 1 st vibration damping rubber and the 2 nd vibration damping rubber. The partition member is formed of a material harder than the 1 st vibration damping rubber and the 2 nd vibration damping rubber, and the dynamic magnification of the 2 nd vibration damping rubber is set to be smaller than the dynamic magnification of the 1 st vibration damping rubber.
Drawings
Fig. 1 is a perspective view schematically showing the structure of an outdoor unit according to embodiment 1.
Fig. 2 is a sectional view showing a state in which the hermetic compressor is mounted on a bottom plate of the casing.
Fig. 3A is a sectional view showing a state in which the vibration insulator of embodiment 1 is interposed between a fixing fitting of the hermetic compressor and a bottom plate of the casing.
Fig. 3B is a sectional view of the vibration isolator according to embodiment 1.
Fig. 3C is a perspective view of an intermediate partition plate used in embodiment 1.
Fig. 4A is a sectional view showing a state in which the vibration insulator of embodiment 2 is interposed between the fixing metal fitting of the hermetic compressor and the bottom plate of the casing.
Fig. 4B is a sectional view of the vibration isolator according to embodiment 2.
Fig. 4C is a perspective view of an intermediate partition plate used in embodiment 2.
Fig. 5A is a sectional view showing a state in which the vibration insulator of embodiment 3 is interposed between the fixing metal fitting of the hermetic compressor and the bottom plate of the casing.
Fig. 5B is a sectional view of the vibration isolator according to embodiment 3.
Fig. 5C is a perspective view of an intermediate partition plate used in embodiment 3.
Detailed Description
[ embodiment 1 ]
Hereinafter, embodiment 1 will be described with reference to the drawings.
Fig. 1 shows an outdoor unit 1 of an air conditioner. The outdoor unit 1 is an example of a heat source unit, and is connected to the indoor unit via a refrigerant pipe not shown.
As shown in fig. 1, the outdoor unit 1 includes a box-shaped casing 2. The casing 2 includes, as main components, a bottom plate 3 serving as a support plate, a partition plate 4, a fan shroud 5, and a back plate 6.
The partition plate 4 rises from the bottom plate 3 to divide the inside of the casing 2 into two chambers, a heat exchange chamber 7 and a machine chamber 8. As shown in fig. 1, when the casing 2 is viewed from the front, the heat exchange chamber 7 is located on the left side of the partition plate 4, and the machine chamber 8 is located on the right side of the partition plate 4. The fan shroud 5 covers the heat exchange chamber 7 from the front of the casing 2. The back plate 5 covers the machine chamber 8 from the back of the housing 2.
The air heat exchanger 10 and the blower 11 are housed in the heat exchange chamber 7. The air heat exchanger 10 stands along the left side surface from the rear surface of the heat exchange chamber 7, and is exposed to the outside of the casing 2. The blower fan 11 is disposed between the air heat exchanger 10 and the fan shroud 5.
As shown in fig. 1, hermetic compressor 12, connection pipes 13 including an expansion valve, and electric component box 14 are housed in machine room 8. The hermetic compressor 12 is a so-called vertical rotary compressor, and is mounted on the bottom plate 3 of the casing 2. The electric component box 14 is an element responsible for the operation of the hermetic compressor 12, and is disposed above the machine room 8 so as to be positioned above the hermetic compressor 12.
As shown in fig. 2, hermetic compressor 12 includes, as main components, hermetic container 15, motor unit 16, and compression mechanism unit 17. The closed container 15 is erected in the vertical direction. A discharge pipe 18 is connected to the upper end of the closed vessel 15. The discharge pipe 18 is connected to the air heat exchanger 10 via a refrigerant pipe. Further, an oil reservoir 19 is provided at the bottom of the closed vessel 15. The oil reservoir 19 stores lubricating oil.
The motor unit 16 is housed in an intermediate portion of the closed container 15. The motor unit 16 includes a cylindrical stator 20 fixed to the inner peripheral surface of the closed casing 15, and a rotor 21 surrounded by the stator 20.
The compression mechanism 17 is housed in a lower portion of the closed casing 15 so as to be positioned directly below the motor 16, and is immersed in the lubricating oil stored in the oil reservoir 19. The compression mechanism 17 includes, as main elements, a cylinder 23, a 1 st bearing 24, a 2 nd bearing 25, a rotary shaft 26, and an annular roller 27.
The cylinder 23 is horizontally fixed to the inner peripheral surface of the closed vessel 15. The 1 st bearing 24 is fixed to the upper surface of the cylinder 23. The 2 nd bearing 25 is fixed to the lower surface of the cylinder 23. The 1 st bearing 24 and the 2 nd bearing 25 close the inner diameter portion of the cylinder 23. Therefore, a space surrounded by the inner diameter portion of the cylinder 23, the 1 st bearing 24, and the 2 nd bearing 25 defines a cylinder chamber 28 for compressing the refrigerant. The cylinder chamber 28 is connected to a reservoir 30 attached to the closed vessel 15 via a suction pipe 29.
The rotation shaft 26 is rotatably supported by the 1 st bearing 24 and the 2 nd bearing 25 so as to be coaxially positioned on a vertical line V1 passing through the center of the closed casing 15. The rotor 21 of the motor unit 16 is coupled to an upper portion of the rotating shaft 26.
The rotary shaft 26 further includes a crankpin portion 31. The crankpin portion 31 is eccentric with respect to a vertical line V1 passing through the center of the closed vessel 15, and is housed in the cylinder chamber 28.
The roller 27 is fitted to the outer peripheral surface of the crankpin portion 31. The roller 27 eccentrically rotates in the cylinder chamber 28 following the rotation shaft 26. As the roller 27 rotates eccentrically, the vanes provided in the vane grooves of the cylinder 23 reciprocate while slidably abutting against the outer peripheral surface of the roller 27, and divide the interior of the cylinder chamber 28 into a suction region and a compression region. Thereby, the volumes of the suction area and the compression area formed in the cylinder chamber 28 change, and the refrigerant sucked into the cylinder chamber 28 from the suction pipe 29 is compressed.
Vibration is generated in hermetic compressor 12 due to torque variation generated during the compression operation. There is a tendency that the vibration generated at the hermetic-type compressor 12 becomes large especially in a low rotation region including at the time of starting.
As shown in fig. 2, hermetic container 15 of hermetic compressor 12 is supported in a vertically standing posture on bottom plate 3 of casing 2 with vibration damping. Specifically, a fixing metal fitting 33 is attached to the bottom of the closed vessel 15. The fixing metal fitting 33 has a plurality of leg portions 33a radially extending toward the periphery of the closed vessel 15. A fitting hole 34 facing the bottom plate 3 is formed at the tip end of the leg portion 33 a.
The base plate 3 as a support plate has a plurality of seat portions 35 at positions corresponding to the leg portions 33a of the fixing metal fittings 33. The seat 35 projects upward of the bottom plate 3. As shown in fig. 3A, a flat support surface 35a is formed at the protruding end of the seat portion 35. An insertion hole 35b is formed in the center of the support surface 35 a.
The tubular vibration insulator 37 is interposed between the distal end portion of each leg portion 33a and the support surface 35a of the seat portion 35. As shown in fig. 3A and 3B, each vibration isolator 37 includes the 1 st vibration isolation rubber 38, the 2 nd vibration isolation rubber 39, and an intermediate partition plate 40.
The 1 st vibration damping rubber 38 is a cylindrical element, and has a fitting convex portion 41 fitted into the fitting hole 34 of the leg portion 33a, a flat lower surface 42 located on the opposite side of the fitting convex portion 41, and a hollow portion 43 opened in the lower surface 42. The upper end of the hollow portion 43 is closed by the fitting projection 41. The 1 st vibration damping rubber 38 of the present embodiment is formed of, for example, chloroprene rubber, which is a diene rubber material.
The 2 nd vibration damping rubber 39 is a cylindrical element having the same outer diameter as the 1 st vibration damping rubber 38, and is located coaxially below the 1 st vibration damping rubber 38. The 2 nd vibration damping rubber 39 has a flat upper surface 44, a flat lower surface 45, and a hollow 46 opened in the upper surface 44 and the lower surface 45. The 2 nd vibration damping rubber 39 of the present embodiment is formed of, for example, natural rubber having a rubber hardness of 45hs (jis a).
Further, the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 are different in vibration damping performance from each other. As one of important indexes indicating the vibration damping performance of a rubber material, a dynamic ratio λ is known. The dynamic magnification λ can be defined as Kd/Ks, which is a ratio of a dynamic elastic modulus (Kd) representing rigidity when the rubber material vibrates to a static elastic modulus (Ks) representing rigidity when the rubber material is slowly deformed. The dynamic magnification λ is proportional to the vibration transmissivity and the vibration attenuation rate of the rubber material.
According to the present embodiment, the dynamic magnification λ of the 1 st vibration damping rubber 38 is, for example, 1.5, the dynamic magnification λ of the 2 nd vibration damping rubber 39 is, for example, 1.2, and the dynamic magnification λ of the 2 nd vibration damping rubber 39 is smaller than the dynamic magnification λ of the 1 st vibration damping rubber 38. In other words, the 1 st vibration damping rubber 38 is softer and has a larger vibration damping rate than the 2 nd vibration damping rubber 39, and the 2 nd vibration damping rubber 39 is harder and has a smaller vibration transmission rate than the 1 st vibration damping rubber 38.
Further, although the outer diameters of the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 are the same, the inner diameter d1 of the hollow portion 43 of the 1 st vibration damping rubber 38 is larger than the inner diameter d2 of the hollow portion 46 of the 2 nd vibration damping rubber 39. Thus, the 1 st vibration damping rubber 38 is more easily deflected than the 2 nd vibration damping rubber 39.
The intermediate partition plate 40 constituting the vibration insulator 37 is an example of a partition member that partitions the 1 st vibration isolation rubber 38 and the 2 nd vibration isolation rubber 39. As shown in fig. 3C, the intermediate partition plate 40 is a flat disk-shaped element, and has the same outer diameter as the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39, for example. A through hole 47 is formed in the center of the intermediate partition plate 40. The through hole 47 is located between the hollow portion 43 of the 1 st vibration damping rubber 38 and the hollow portion 46 of the 2 nd vibration damping rubber 39. The inner diameter d3 of the through hole 47 is set to be the same as the inner diameter d2 of the hollow portion 46 of the 2 nd vibration damping rubber 39.
Further, the intermediate partition plate 40 is formed of a metal material harder than the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39. As the metal material, for example, iron or an aluminum alloy can be used. The material of the intermediate partition plate 40 is not limited to metal, and for example, a synthetic resin material or a rubber material may be used as long as it is harder than the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 and can cut off vibrations.
As shown in fig. 3A and 3B, the intermediate partition plate 40 is sandwiched between the 1 st vibration damping rubber 38 and the 2 nd rubber 39 so as to be in close contact with the lower surface 42 of the 1 st vibration damping rubber 38 and the upper surface 44 of the 2 nd vibration damping rubber 39 without a gap.
According to the present embodiment, the intermediate partition plate 40 is housed in a mold for molding when the 1 st and 2 nd vibration damping rubbers 38 and 39 are molded integrally with the 1 st and 2 nd vibration damping rubbers 38 and 39. Therefore, the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 40 are assembled into an integral structure that is connected so as not to be dispersed.
Further, when the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 40 are assembled into an integrated structure, these three elements may be bonded to each other by an adhesive.
As shown in fig. 2 and 3A, the 1 st vibration damping rubber 38 of the vibration damper 37 elastically receives the hermetic compressor 12 via the fixing fitting 33. The 2 nd vibration damping rubber 39 of the vibration isolator 37 is interposed between the intermediate partition plate 40 and the support surface 35a of the seat portion 35, and supports the 1 st vibration damping rubber 38 from below.
A bolt 50 as a fastener is inserted into the insertion hole 35b of the seat portion 35 from below the base plate 3. The bolt 50 penetrates the hollow portion 46 of the 2 nd vibration damping rubber 39, the through hole 47 of the intermediate partition plate 40, the hollow portion 43 of the 1 st vibration damping rubber 38, and the fitting convex portion 41, and protrudes above the vibration damping body 37. A nut 51 is screwed into the projecting end of the bolt 50. By this screwing, the 1 st and 2 nd vibration damping rubbers 38 and 39 are compressed appropriately between the leg portion 33a of the fixing metal fitting 33 and the seat portion 35 of the bottom plate 3, and the bottom portion of the hermetic compressor 12 is elastically held on the bottom plate 3.
In embodiment 1, when the hermetic compressor 12 starts to operate, the rotary shaft 26 of the compression mechanism 17 rotates following the rotor 21 of the motor 16. As the rotating shaft 26 rotates, the roller 27 fitted to the outer peripheral surface of the crankpin portion 31 eccentrically rotates in the cylinder chamber 28, and the vane reciprocates while slidably abutting against the outer peripheral surface of the roller 27. Therefore, the volumes of the suction area and the compression area formed in the cylinder chamber 28 change, and the refrigerant sucked into the cylinder chamber 28 from the suction pipe 29 is compressed.
In a low rotation region of hermetic compressor 12 including the time of startup, when roller 27 rotates once, the torque applied to roller 27 greatly fluctuates according to the compression and discharge operation of the refrigerant, and vibration of hermetic compressor 12 is promoted.
The vibration of hermetic compressor 12 is first transmitted to 1 st vibration damping rubber 38 of vibration damper 37 through leg portion 33a of fixing fitting 33. The 1 st vibration damping rubber 38 is formed of a rubber material having a dynamic expansion ratio λ larger than that of the 2 nd vibration damping rubber 39 that supports the 1 st vibration damping rubber 38 from below. In other words, the 1 st vibration damping rubber 38 is soft and has a large vibration damping rate, and therefore, when receiving the vibration of the hermetic compressor 12, it deforms so as to absorb the vibration.
Therefore, the vibration of hermetic compressor 12 is less likely to be transmitted to discharge pipe 18 and suction pipe 29 connected to hermetic container 15, and noise associated with the vibration of discharge pipe 18 and suction pipe 29 can be suppressed.
On the other hand, when hermetic compressor 12 reaches the high rotation region, the vibration generated by hermetic compressor 12 is reduced as compared with the low rotation region. At this time, the 2 nd vibration damping rubber 39 supporting the 1 st vibration damping rubber 38 from below is formed of a rubber material having a dynamic ratio λ smaller than that of the 1 st vibration damping rubber 38. In other words, 2 nd vibration damping rubber 39 is hard and has a small vibration transmission rate, and therefore, hermetic compressor 12 can be firmly supported so that hermetic compressor 12 does not swing.
Therefore, vibration to be transmitted from hermetic compressor 12 to bottom plate 3 of casing 2 can be cut by 2 nd vibration isolation rubber 39, and noise accompanying vibration of bottom plate 3 can be suppressed.
In embodiment 1, a metal intermediate partition plate 40 harder than a rubber material is interposed between the 1 st and 2 nd vibration damping rubbers 38 and 39 having different vibration damping properties. The intermediate partition plate 40 isolates the 1 st vibration damping rubber 38 from the 2 nd vibration damping rubber 39, thereby blocking the transmission of vibration between the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39.
Therefore, it is possible to avoid the frequency component when the 1 st vibration isolation rubber 38 vibrates from being combined with the frequency component when the 2 nd vibration isolation rubber 39 vibrates, and it is possible to sufficiently exhibit the original vibration isolation performance of the 1 st vibration isolation rubber 38 and the 2 nd vibration isolation rubber 39.
Therefore, the following outdoor unit 1 can be provided: the vibration damping performance of hermetic compressor 12 is good in all the operation regions from the low rotation region to the high rotation region, and is excellent in quietness.
Since the vibration insulators 37 are assembled as an integral structure, the relative positional relationship of the 1 st vibration isolation rubber 38, the 2 nd vibration isolation rubber 39, and the intermediate partition plate 40 is determined. Therefore, when vibration accompanying the operation of hermetic compressor 12 acts on vibration isolator 37, it is possible to prevent relative displacement movement of 1 st vibration isolation rubber 38 and 2 nd vibration isolation rubber 39 from the normal positions. Therefore, the vibration damping performance of the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 is not impaired.
At the same time, when the vibration insulator 37 is interposed between the fixing metal fitting 33 and the bottom plate 3, the three elements 38, 39, and 40 can be prevented from being displaced or dispersed, and the workability when the hermetic compressor 12 is supported on the bottom plate 3 in a vibration-isolated manner can be improved.
In the present embodiment, since the intermediate partition plate 40 is formed of a metal material, it can cope with the melting points of the various rubber materials forming the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39. Therefore, it is advantageous to mold the insulator 37 using a mold for molding, and the insulator 37 can be easily molded integrally.
Further, for example, by selecting the material (specific gravity) of the intermediate partition plate 40 in accordance with the specifications of the casing 2 of the outdoor unit 1 or the hermetic compressor 12, the vibration damping performance of the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 can be optimized.
[ 2 nd embodiment ]
Fig. 4A, 4B and 4C disclose embodiment 2.
The embodiment 2 differs from the embodiment 1 in the matters related to the intermediate partition plate 60 of the vibration insulator 37, and the structure of the vibration insulator 37 other than this is the same as that of the embodiment 1. Therefore, in embodiment 2, the same components as those in embodiment 1 are denoted by the same reference numerals, and descriptions thereof are omitted.
The intermediate partition plate 60 is formed of a metal material such as iron or an aluminum alloy, for example. As shown in fig. 4B and 4C, the intermediate partition plate 60 includes, as main components, a disk-shaped base portion 61, a 1 st engaging portion 62, and a 2 nd engaging portion 63.
The base portion 61 is sandwiched between the lower surface 42 and the upper surface 44 of the 1 st vibration damping rubber 38 and the upper surface 44 of the 2 nd vibration damping rubber 39 so as to be in close contact with each other without a gap. A through hole 47 through which the bolt 50 passes is formed in the center of the base portion 61.
The 1 st engaging portion 62 and the 2 nd engaging portion 63 are examples of the positioning portion. The 1 st engaging portion 62 is formed in a cylindrical shape continuous in the circumferential direction of the base portion 61, and coaxially protrudes from the upper surface of the base portion 61 toward the 1 st vibration damping rubber 38. Therefore, the 1 st engaging portion 62 is integrally embedded in the 1 st vibration damping rubber 38. In other words, the 1 st vibration damping rubber 38 has an annular fitting groove 64 that opens on the lower surface 42 thereof, and the 1 st engaging portion 62 is tightly fitted in the fitting groove 64.
The 2 nd engaging portion 63 is formed in a cylindrical shape continuous in the circumferential direction of the base portion 61, and coaxially protrudes from the lower surface of the base portion 61 toward the 2 nd vibration damping rubber 39. Therefore, the 2 nd engaging portion 63 is integrally embedded in the 2 nd vibration damping rubber 39. In other words, the 2 nd vibration damping rubber 39 has an annular fitting groove 65 that opens on the upper surface 44 thereof, and the 2 nd engaging portion 63 is tightly fitted into the fitting groove 65.
According to embodiment 2, the 1 st engaging portion 62 of the intermediate partition plate 60 is enclosed by the 1 st vibration damping rubber 38, and the 2 nd engaging portion 63 of the intermediate partition plate 60 is enclosed by the 2 nd vibration damping rubber 39.
Therefore, the contact area of the intermediate partition plate 60 with respect to the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 can be sufficiently ensured, and the three elements of the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 60 can be more firmly coupled.
In addition, in appearance, the 1 st engaging portion 62 of the intermediate partition plate 60 bites into the 1 st vibration damping rubber 38, and the 2 nd engaging portion 63 bites into the 2 nd vibration damping rubber 39, so that the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 are relatively positioned with respect to the base portion 61.
Therefore, when vibration accompanying the operation of hermetic compressor 12 acts on vibration isolators 37, it is possible to reliably avoid relative displacement movement of 1 st vibration isolation rubber 38 and 2 nd vibration isolation rubber 39 from the normal positions.
In embodiment 2, the vibration insulators 37 are not limited to being integrally molded using a mold for molding, and for example, the 1 st vibration isolation rubber 38, the 2 nd vibration isolation rubber 39, and the intermediate partition plate 60 may be formed separately in advance.
In this case, the 1 st engaging portion 62 of the intermediate partition plate 60 is fitted into the fitting groove 64 of the 1 st vibration damping rubber 38, and the 2 nd engaging portion 63 of the intermediate partition plate 60 is fitted into the fitting groove 65 of the 2 nd vibration damping rubber 39, whereby the three elements of the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 60 are integrated.
When combining the three elements of the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 60, an adhesive may be used in combination.
The 1 st engaging portion 62 and the 2 nd engaging portion 63 are not limited to a cylindrical shape continuous in the circumferential direction of the base portion 61, and may be arranged at intervals in the circumferential direction of the base portion 61.
[ embodiment 3 ]
Fig. 5A, 5B and 5C disclose embodiment 3.
Embodiment 3 differs from embodiment 1 in the points related to the intermediate partition plate 70 of the vibration insulator 37, and the structure of the vibration insulator 37 other than this is the same as embodiment 1. Therefore, in embodiment 3, the same components as those in embodiment 1 are denoted by the same reference numerals, and descriptions thereof are omitted.
The intermediate partition plate 70 is formed of a metal material such as iron or an aluminum alloy, for example. As shown in fig. 5B and 5C, the intermediate partition plate 70 includes, as main components, a disk-shaped base portion 71 and an outer wall portion 72.
The base portion 71 is sandwiched between the lower surface 42 and the upper surface 44 of the 1 st vibration damping rubber 38 and the upper surface 44 of the 2 nd vibration damping rubber 39 so as to be in close contact with each other without a gap. A through hole 47 through which the bolt 50 passes is formed in the center of the base portion 71.
The outer wall portion 72 is an example of the positioning portion, and is formed in a cylindrical shape so as to surround the base portion 71. The outer wall portion 72 includes a 1 st wall portion 73 coaxially protruding from the upper surface of the base portion 71 toward the 1 st vibration damping rubber 38, and a 2 nd wall portion 74 coaxially protruding from the lower surface of the base portion 71 toward the 2 nd vibration damping rubber 39.
The 1 st wall portion 73 is in contact with the outer peripheral surface of the 1 st vibration damping rubber 38 without a gap so as to surround the 1 st vibration damping rubber 38. The 2 nd wall portion 74 is in contact with the outer peripheral surface of the 2 nd vibration damping rubber 39 without a gap so as to surround the 2 nd vibration damping rubber 39. In other words, the 1 st vibration damping rubber 38 is fitted inside the 1 st wall portion 73, and the 2 nd vibration damping rubber 39 is fitted inside the 2 nd wall portion 74.
According to embodiment 3, the 1 st and 2 nd vibration damping rubbers 38 and 39 are held in a state of being surrounded by the outer wall portion 72 of the intermediate partition plate 70. Therefore, the contact area of the intermediate partition plate 70 with respect to the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 can be sufficiently ensured, and the three elements of the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 70 can be more firmly coupled.
At the same time, by providing the outer wall portion 72 on the intermediate partition plate 70, the movement of the 1 st vibration damping rubber 38 and the 2 nd vibration damping rubber 39 in the radial direction with respect to the base portion 71 is restricted, and the base portion 61, the 1 st vibration damping rubber 38, and the 2 nd vibration damping rubber 39 are relatively positioned.
Therefore, when vibration accompanying the operation of hermetic compressor 12 acts on vibration isolators 37, it is possible to reliably avoid relative displacement movement of 1 st vibration isolation rubber 38 and 2 nd vibration isolation rubber 39 from the normal positions.
In embodiment 3, the vibration insulators 37 are not limited to being integrally molded using a mold for molding, and for example, the 1 st vibration isolation rubber 38, the 2 nd vibration isolation rubber 39, and the intermediate partition plate 70 may be separately formed in advance.
In this case, the 1 st vibration damping rubber 38 is fitted inside the 1 st wall portion 73 of the outer wall portion 72, and the 2 nd vibration damping rubber 39 is fitted inside the 2 nd wall portion 74 of the outer wall portion 72, whereby the three elements of the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 70 are integrated.
When combining the three elements of the 1 st vibration damping rubber 38, the 2 nd vibration damping rubber 39, and the intermediate partition plate 70, an adhesive may be used in combination.
The 1 st wall portion 73 and the 2 nd wall portion 74 of the outer wall portion 72 are not limited to the cylindrical shape continuous in the circumferential direction of the base portion 71, and may be arranged at intervals in the circumferential direction of the base portion 71.
Several embodiments of the present invention have been described, 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 other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the scope equivalent thereto.
For example, the materials of the 1 st vibration damping rubber, the 2 nd vibration damping rubber, and the intermediate partition plate may be appropriately changed according to the desired vibration damping performance, and the materials are not particularly limited.
The dynamic ratios of the 1 st and 2 nd vibration damping rubbers disclosed in embodiment 1 are only reference values, and can be appropriately changed depending on, for example, the usage environment of the hermetic compressor.
Further, the heat source unit is not particularly limited to the outdoor unit of the air conditioner, and can be applied to, for example, a heat source unit of a heat pump water heater in the same manner.
Description of the symbols
1: a heat source unit (outdoor unit); 2: a housing; 3: a base plate (support plate); 12: a hermetic compressor; 37: a vibration isolator; 38: 1 st vibration isolation rubber; 39: 2 nd vibration isolation rubber; 40: a partition member (intermediate partition plate).
Claims (8)
1. A heat source unit is provided with:
a housing having a bottom plate;
a vertical hermetic compressor mounted on the base plate and compressing a refrigerant; and
a vibration isolator interposed between the hermetic compressor and the base plate,
the vibration isolator includes:
1 st vibration damping rubber for elastically supporting the hermetic compressor;
a 2 nd vibration damping rubber interposed between the 1 st vibration damping rubber and the bottom plate, and supporting the 1 st vibration damping rubber from below; and
a partition member for partitioning the 1 st vibration damping rubber and the 2 nd vibration damping rubber,
the partition member is made of a material harder than the 1 st vibration damping rubber and the 2 nd vibration damping rubber, and the dynamic magnification of the 2 nd vibration damping rubber is smaller than that of the 1 st vibration damping rubber.
2. The heat source unit according to claim 1,
the 1 st vibration damping rubber, the 2 nd vibration damping rubber, and the partition member are assembled into an integrated structure.
3. The heat source unit according to claim 1,
the partition member includes:
a base part sandwiched between the 1 st vibration damping rubber and the 2 nd vibration damping rubber; and
and a positioning portion provided on the base portion and determining a relative positional relationship between the 1 st vibration damping rubber and the 2 nd vibration damping rubber with respect to the base portion.
4. The heat source unit according to claim 3,
the positioning portion includes a 1 st engaging portion protruding from the base portion toward the 1 st vibration damping rubber and embedded in the 1 st vibration damping rubber, and a 2 nd engaging portion protruding from the base portion toward the 2 nd vibration damping rubber and embedded in the 2 nd vibration damping rubber.
5. The heat source unit according to claim 3,
the positioning portion is an outer wall portion provided to the base portion and contacting an outer peripheral surface of the 1 st vibration damping rubber and an outer peripheral surface of the 2 nd vibration damping rubber.
6. The heat source unit according to claim 1,
the 1 st and 2 nd vibration damping rubbers are formed in a cylindrical shape having a hollow portion, and the hollow portion of the 1 st vibration damping rubber has an inner diameter larger than that of the hollow portion of the 2 nd vibration damping rubber.
7. The heat source unit according to any one of claims 1 to 6,
the partition member is formed of a metal material.
8. A vibration isolator comprising:
1 st vibration isolation rubber elastically supporting the hermetic compressor placed on the support plate;
a 2 nd vibration damping rubber interposed between the 1 st vibration damping rubber and the support plate, and supporting the 1 st vibration damping rubber from below; and
a partition member for partitioning the 1 st vibration damping rubber and the 2 nd vibration damping rubber,
the partition member is made of a material harder than the 1 st vibration damping rubber and the 2 nd vibration damping rubber, and the dynamic magnification of the 2 nd vibration damping rubber is smaller than that of the 1 st vibration damping rubber.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/034382 WO2019058531A1 (en) | 2017-09-22 | 2017-09-22 | Heat source unit and vibration isolating body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110621877A true CN110621877A (en) | 2019-12-27 |
Family
ID=65810219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780090828.2A Pending CN110621877A (en) | 2017-09-22 | 2017-09-22 | Heat source unit and vibration isolator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6808845B2 (en) |
| CN (1) | CN110621877A (en) |
| WO (1) | WO2019058531A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113167525A (en) * | 2018-12-06 | 2021-07-23 | 伊莱克斯电器股份公司 | Refrigerator with compressor |
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|---|---|---|---|---|
| JPS5637150Y2 (en) * | 1978-04-27 | 1981-09-01 | ||
| JPH0487049U (en) * | 1990-12-05 | 1992-07-29 | ||
| JPH0752435Y2 (en) * | 1990-02-27 | 1995-11-29 | 東海ゴム工業株式会社 | Anti-vibration rubber |
| JPH11323042A (en) * | 1998-05-11 | 1999-11-26 | Mitsui Chem Inc | Vibration proof rubber composition |
| JP2007292021A (en) * | 2006-04-27 | 2007-11-08 | Matsushita Electric Ind Co Ltd | Support device for compressor |
| JP2010534808A (en) * | 2007-08-01 | 2010-11-11 | 黄潭城 | Elastic body |
| CN102177362A (en) * | 2008-10-09 | 2011-09-07 | 株式会社普利司通 | Vibration damping device |
| JP2014047822A (en) * | 2012-08-30 | 2014-03-17 | Hitachi Automotive Systems Ltd | Vibration isolator |
| CN104736879A (en) * | 2013-06-13 | 2015-06-24 | 住友理工株式会社 | Vibration damping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6213838A (en) * | 1985-07-10 | 1987-01-22 | Honda Motor Co Ltd | Rubber vibration insulator |
-
2017
- 2017-09-22 CN CN201780090828.2A patent/CN110621877A/en active Pending
- 2017-09-22 WO PCT/JP2017/034382 patent/WO2019058531A1/en active Application Filing
- 2017-09-22 JP JP2019542932A patent/JP6808845B2/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637150Y2 (en) * | 1978-04-27 | 1981-09-01 | ||
| JPH0752435Y2 (en) * | 1990-02-27 | 1995-11-29 | 東海ゴム工業株式会社 | Anti-vibration rubber |
| JPH0487049U (en) * | 1990-12-05 | 1992-07-29 | ||
| JPH11323042A (en) * | 1998-05-11 | 1999-11-26 | Mitsui Chem Inc | Vibration proof rubber composition |
| JP2007292021A (en) * | 2006-04-27 | 2007-11-08 | Matsushita Electric Ind Co Ltd | Support device for compressor |
| JP2010534808A (en) * | 2007-08-01 | 2010-11-11 | 黄潭城 | Elastic body |
| CN102177362A (en) * | 2008-10-09 | 2011-09-07 | 株式会社普利司通 | Vibration damping device |
| JP2014047822A (en) * | 2012-08-30 | 2014-03-17 | Hitachi Automotive Systems Ltd | Vibration isolator |
| CN104736879A (en) * | 2013-06-13 | 2015-06-24 | 住友理工株式会社 | Vibration damping device |
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| Title |
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| 周林森: "《机械振动技术的理论与应用》", 31 May 1997 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113167525A (en) * | 2018-12-06 | 2021-07-23 | 伊莱克斯电器股份公司 | Refrigerator with compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2019058531A1 (en) | 2020-05-28 |
| WO2019058531A1 (en) | 2019-03-28 |
| JP6808845B2 (en) | 2021-01-06 |
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