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1. 发明专利

JP2002081799A HEAT EXCHANGE CYCLE DEVICE FOR REFRIGERATION DEVICE, AIR CONDITIONER OR THE LIKE 失效
公开(公告)号：JP2002081799A
公开(公告)日：2002-03-22
申请号：JP2000273067
申请日：2000-09-08
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , KAWAI HIDENAO
IPC分类号： F25B41/06 , F25B41/00
摘要： PROBLEM TO BE SOLVED: To provide a heat exchange cycle device for a refrigeration device, air conditioner or the like avoiding excessive stress concentration on a root of a capillary tube having a refrigerant tube welded thereon and having an enhanced reliability with a simpler structure. SOLUTION: The heat exchange cycle device for a refrigeration device, an air conditioner or the like comprises a compressor, a condenser, a capillary tube, an evaporator and the like connected with one another by refrigerant piping. The capillary tube having both ends thereof connected with ends of the refrigerant piping is formed into a loop, and the vicinities of the ends of the refrigerant piping are fastened along the loop-shaped capillary tube. The protruding length of the capillary tube from the end of the refrigerant piping is made small, and oscillation amplitude of the capillary tube is made small. Both the capillary tube and the refrigerant piping are fastened to suppress excessive stress concentration at the root of the capillary tube.

2. 发明专利

JP2001073950A DISCHARGE VALVE DEVICE FOR COMPRESSOR AND THE LIKE 失效
公开(公告)号：JP2001073950A
公开(公告)日：2001-03-21
申请号：JP24710999
申请日：1999-09-01
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , SAKAO YOICHI
IPC分类号： F04B39/10
摘要： PROBLEM TO BE SOLVED: To reduce pulsation with a simpler structure in a discharge value device used in a compressor for refrigeration, air conditioning, or the like. SOLUTION: This device is provided with a discharge valve placed with covering a discharge port 6 communicating between a sealed housing and a compressing element accommodated therein such that one end side of the discharge valve is secured and the other end thereof opens and closes the discharge port 6 by elasticity. The discharge valve is composed of a first discharge valve 51a provided with a hole of smaller diameter than that of the discharge port 6 at a place facing to the discharge port 6 with abutting thereto and a second discharge valve 51b with no hole placed upon the first discharge valve 51a so as to make valve action force and valve flexure small to prevent leakage from a gap in a discharge port surrounding part by deformation, and vibration caused by pulsation is reduced and noise reduction is attained.

3. 发明专利

JPH11193787A SCROLL TYPE FLUID MACHINERY 失效
公开(公告)号：JPH11193787A
公开(公告)日：1999-07-21
申请号：JP36683697
申请日：1997-12-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , HIROOKA KATSUMI , MIZUNO HISAO
IPC分类号： F04C18/02
摘要： PROBLEM TO BE SOLVED: To avoid interference in corners for preventing damage of the fixed and swiveling scrolls as well as impacts and noise by providing notches at least one of the corner defined by the outer periphery and inside surface of the swiveling scroll end plate and the corner defined by the inner periphery and inside surface of the outer periphery flange of the fixed scroll. SOLUTION: An interference is generated between a swiveling scroll 2 and a fixed scroll 1 when the swiveling scroll 2 tilts within the clearance during the swiveling scroll 2 revolves with a revolution swivel radius. To prevent the interference, a notch 91 is provided at a part of the corner defined by the inner surface and outer periphery of an end plate 21 of the swiveling scroll 2, while a notch 92 is provided at a part of the corner formed by the inner surface and inner periphery of an outer periphery flange 14 of the fixed scroll 1. Any one of the notches 91 and 92 may be provided. The notch may be formed through any one of the process including cutting, casting or forging. If either of the notch 91 or 92, or the total area of them are made larger than the interfered portion, interference can be preliminarily prevented.

4. 发明专利

JPH07217559A SCROLL TYPE COMPRESSOR 失效
公开(公告)号：JPH07217559A
公开(公告)日：1995-08-15
申请号：JP1259894
申请日：1994-02-04
申请人： MITSUBISHI HEAVY IND LTD
发明人： MIZUNO HISAO , TAKEDA KIMIATSU , KOBAYASHI HIROYUKI , SATO KAZUHIRO
IPC分类号： F04C29/06 , F04C18/02 , F04C28/10 , F04C29/10
摘要： PURPOSE:To suppress the generation of noise and vibration by a method wherein a notch having a size oblique based on an engaging direction so that the connection length of a lap is gradually changed is formed in each of the lap surfaces of a fixed scroll and a revolving scroll at a point where engagement is brought into a discontinuous state. CONSTITUTION:When a revolving scroll is caused to effect revolving movement such a manner to be not rotated based on a fixed scroll 1, a closed space between the involute curved laps 12 of the scrolls is moved to a central part as the volume thereof is gradually decreased and a compressed refrigerant is delivered through a delivery port formed in the end plate 11 of the fixed scroll 1. In a so formed compressor, a notch 13 having a side inclined in a engagement direction is formed at an involute terminal point on the belly side where discontinuity occurs to engagement of each lap 12 at a suction shutoff point. This constitution smoothly changes a contact force in a way that the two laps 12 do not make contact with each other at a time but a contact length is slowly increased, and a contact force is smoothly changed, and the generation of noise and vibration is reduced.

5. 发明专利

JPH06323487A PULSATION ATTENUATOR 失效
公开(公告)号：JPH06323487A
公开(公告)日：1994-11-25
申请号：JP10812293
申请日：1993-05-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： KANNOU TATSUZOU , SATO KAZUHIRO , HOSOGAI FUTOSHI
IPC分类号： F16L55/04 , F25B41/00
摘要： PURPOSE:To dispense with a special space to install a pulsation attenuator, and attenuate pressure pulsation at low cost by constituting a side branch type muffler of a part of a branch pipe in a circuit where the branch piping connected to a piping arranged continuously to a pulsation source. CONSTITUTION:A branch part 2 is connected to one main pipe 1b, and the other main pipe 1a and a branch piping 3a for a pressure switch 4 are connected to the branch part 2. In this case, the branch piping is set in a diameter in the same degree with a diameter of a piping in which refrigerant gas flows, and is set in a 1/4 length of a wave length of pressure pulsation to be reduced. Thereby, since the branch piping 3a is used as a pulsation attenuator, a special space to install the pulsation attenuator can be dispensed with, and the pressure pulsation can be attenuated at low cost.

6. 发明专利

JPH06288353A ELASTIC SUSPENSION DEVICE FOR HORIZONTALLY INSTALLED COMPRESSOR 失效
公开(公告)号：JPH06288353A
公开(公告)日：1994-10-11
申请号：JP7698593
申请日：1993-04-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIBINO TATSURO , SATO KAZUHIRO , UMAZUME SOICHIRO , HIRABAYASHI MASASHI , UKAI TETSUZO , HOSOGAI FUTOSHI
IPC分类号： F04B39/00 , F16F15/08
摘要： PURPOSE:To suppress the generation of an excessive vibration displacement in the rotating direction at start by providing an excessive displacement elastic suspension device near the longitudinal center-of-gravity position of a compressor. CONSTITUTION:A leg 2a is situated near the longitudinal center-of-gravity position G of a compressor 1, the upper end is fixed to the middle body part of a ring 6, and the lower end is fixed to an installing surface 3. A rubber vibration isolator 4a is wound on the center-of-gravity part outer circumferential part of the compressor 1, vibration isolating tools 5 are interposed between both ends of the compressor 1 and the installing surface 3, and the ring 6 covers the whole circumference of the rubber vibration isolator 4a to a degree as never preventing the vibration isolating action, and holds it. Since the leg 2a and the ring 6 thus support the vicinity of the longitudinal center-of-gravity position of the compressor 1 through the rubber vibration isolator 4a, an excessive rotating directional vibration displacement generated just after start is suppressed. Consequently, a piping connected to the compressor 1 receives no excessive displacement, and its stress never reach the breaking stress.

7. 发明专利

JP2001227490A LIQUID COOLANT PUMP 失效
公开(公告)号：JP2001227490A
公开(公告)日：2001-08-24
申请号：JP2000040042
申请日：2000-02-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , MACHIDA HIROSHI
IPC分类号： F04C29/06 , F04C29/00 , F04C29/12 , F25B41/00
摘要： PROBLEM TO BE SOLVED: To reduce pulsation of a liquid coolant and to suppress vibration even under a large flow rate and a high differential pressure. SOLUTION: If an expanded pipe part 31 is formed at a connection part connecting a container 29 to a discharge pipe 22, the flow rate of the liquid coolant decreases when the liquid coolant flows into the expanded pipe part 31, so that the pulsation of the liquid coolant can be reduced. The expanded pipe part 31 itself forms an expanded muffler, so that the pulsation with a wavelength corresponding to the length of the expanded pipe part can be reduced. Accordingly, not only the pulsation of the liquid coolant can be reduced without fail even under the large flow rate and the high differential pressure thereby to suppress vibration and noise of the discharge pipe, but also noise of an interior unit can be prevented, thereby coping with higher performance of the pump.

8. 发明专利

JPH1039875A SOUND INSULATING MATERIAL STRUCTURE AND SOUNDPROOF STRUCTURE OF AIR CONDITIONER 失效
公开(公告)号：JPH1039875A
公开(公告)日：1998-02-13
申请号：JP19071096
申请日：1996-07-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , FUJITA KATSUHIRO
IPC分类号： F04C29/06 , F24F5/00 , G10K11/16 , G10K11/172
摘要： PROBLEM TO BE SOLVED: To maintain the frequency at which the change in the cavity volume by recessed parts is suppressed and a sound reduction effect is expected even when the material is used in a curved state at an initial state and to obtain a stable noise decreasing effect by specifying the number of the communicating holes of a sound insulating layer formed to be communicated with the cavities by the recessed parts of a sound insulating material to >=2. SOLUTION: The many recessed parts 111 of a prescribed depth for forming the cavities are formed on the surface of the sound insulating material body 11. The sound insulating layer 12 is laminated on the surface of the sound insulating material body 11. The plural communicating holes 121 communicating the cavities formed by the recessed parts 111 with respect to the recessed parts 111 of the sound insulating material body 11 are formed in this sound insulating layer 12. In such a case, the cavity volume V for determining the prescribed resonance frequency f and the ratio S/l of the area and the length by the communicating holes 121 are determined and the total sum area S of these communicating holes 121 is made coincident with the area by the single communicating hole for obtaining the prescribed resonance frequency f. Namely, the area for obtaining the prescribed resonance frequency f is assured by forming a plurality of the slender communicating holes 121.

9. 发明专利

JPH09170572A SCROLL TYPE FLUID MACHINE 失效
公开(公告)号：JPH09170572A
公开(公告)日：1997-06-30
申请号：JP32895595
申请日：1995-12-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , TAKEDA KIMIATSU
IPC分类号： F04C29/06 , F04C18/02 , F04C29/00
摘要： PROBLEM TO BE SOLVED: To restrain noise caused by increase of pressing force by inertial force. SOLUTION: This fluid machine is constituted to change a rotational and revolutional radius of a revolving scroll. Increase of pressing force at the time of high speed rotation is set off by providing a slide member 20 to vary a slide angle θ in accordance with the number of rotation between a slide hole 7 of a drive bush 5 and a slide surface of an eccentric pin 9 and reducing the slide angle θ of the eccentric pin 9 by inertial force of the slide member 20 at the time when the inertial force becomes proportional to a square of the number of rotation and the pressing force increases.

10. 发明专利

JPH08312562A TIGHTLY CLOSE TYPE COMPRESSOR 失效
公开(公告)号：JPH08312562A
公开(公告)日：1996-11-26
申请号：JP12186895
申请日：1995-05-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： SATO KAZUHIRO , FUJITANI MAKOTO , FUJITA KATSUHIRO
IPC分类号： F04C29/00 , F01C21/10 , F04C18/02 , F04C23/00 , F04C29/06
摘要： PURPOSE: To provide a tightly close type compressor which can restrain the vibration increase and noise increase of a top housing caused by the excitation of the top housing by the pulse of compressed gas. CONSTITUTION: The outer periphery flange 18 of a exhaust cover 4 is inserted to the upper end outer periphery of a cylindrical housing 15 and the disc shape end surface 16a of a top housing 16 is made in contact with the disc shape end surface 4a of the exhaust cover 4 and the lower end of the top housing 16 is inserted to the outer periphery of the outer periphery flange 18 of the exhaust cover 4 and welded while setting the clearance 8 in the radial direction between the outer periphery flange 18 of this exhaust cover 4 and the low end of the top housing 16 to 1.0mm or less. Thereby, the top housing 16 is contacted to the exhaust cover 4 strongly by utilizing the welding strain of the top housing 16 so as not to be separated even if the exhaust pressure from a compression mechanism is received and the drop of rigidity of the top housing 16 is restrained and the increase of the vibration and noise of the top housing 16 coursed by the pulse of a compressed gas is restrained.

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