摘要:
In a hermetic compressor in a freezing refrigerating system or an air-conditioning system such as a refrigerator or a showcase, a construction is disclosed for intending to provide a low-noise hermetic compressor by effectively attenuating a pressure pulsation having occurred in a compression chamber with a suction muffler. By this construction, since a muffler cover 20 has a planar simple shape, the deformation upon molding becomes little and it can come into fully close contact with a muffler main body 19. Therefore, the pressure pulsation hardly leaks through the connecting portion between the muffler main body 19 and the muffler cover 20. The full silencing effect that the suction muffler 18 has is obtained and thereby noise can be reduced more effectively.
摘要:
In a hermetic compressor in a freezing refrigerating system or an air-conditioning system such as a refrigerator or a showcase, a construction is disclosed for intending to provide a low-noise hermetic compressor by effectively attenuating a pressure pulsation having occurred in a compression chamber with a suction muffler. By this construction, since a muffler cover 20 has a planar simple shape, the deformation upon molding becomes little and it can come into fully close contact with a muffler main body 19. Therefore, the pressure pulsation hardly leaks through the connecting portion between the muffler main body 19 and the muffler cover 20. The full silencing effect that the suction muffler 18 has is obtained and thereby noise can be reduced more effectively.
摘要:
This invention relates to a hermetic compressor used on a refrigerant cycle such as a refrigerator, and discloses a low noise compressor designed to attenuate a resonance sound in a compression chamber and intake pressure pulsing more operatively at a position adjacent to their sources, which intake pressure pulsing occurs at an intake valve port. In the compressor, a resonance space 38 is provided adjacent to the intake valve port 29 that is closer in distance to a noise source. As a result, noise can be reduced more operatively than muffling functions of an intake muffler 31 do. In addition, although acoustic characteristics of the intake muffler 31 amplify noises having specific frequencies, such noises can be attenuated before being amplified.
摘要:
In a hermetic compressor for use on an air-conditioning unit as well as a refrigerating unit such as a refrigerator and a showcase, there is disclosed a constitution designed to provide a silently operated hermetic compressor that has an intake muffler readily assembled thereon. The hermetic compressor including a substantially disk-like elastic member disposed between the intake muffler at an outlet thereof and a cylinder head is provided, in which an outlet orifice of the intake muffler constantly remains pressed against an intake valve port through a gasket.
摘要:
A sealed electric compressor for use in, for example, an electric refrigerator, generates a little noise and can feed any moving part of its compressing element with refrigerator lubricant. An oil pickup tube is joined by insertion to the lowermost end of a crank shaft and includes a first centrifugal pumping portion and a second centrifugal pumping portion provided continuously and arranged at a smaller angle than that of the first centrifugal pumping portion. The second centrifugal pumping portion arranged at a smaller angle can spin in a pool of the refrigerator lubricant.
摘要:
This invention relates to compounds which exhibit selective muscarinic M3 receptor antagonism, have little side effects, are suitable for inhalation therapy and are useful as treating agents of respiratory system diseases, of the general formula (I); [in which A signifies a group expressed by a formula (a0) or (b0); Ar signifies optionally substituted aryl or heteroaryl; B1 and B2 signify aliphatic hydrocarbon; R1 signifies fluorine-substituted cycloalkyl; R2, R3 and R4 signify lower alkyl, single bond or alkylene bonded to B1, or R2 and R3 are united to signify alkylene; R5 and R7 signify hydrogen, lower alkyl, or a single bond or alkylene bonded to B2; R6 signifies hydrogen, lower alkyl or a group expressed as —N(R8)R9; and X− signifies an anion].
摘要:
This invention relates to compounds which exhibit selective muscarinic M3 receptor antagonism, have little side effects, are suitable for inhalation therapy and are useful as treating agents of respiratory system diseases, of the general formula (I); [in which A signifies a group expressed by a formula (a0) or (b0); Ar signifies optionally substituted aryl or heteroaryl; B1 and B2 signify aliphatic hydrocarbon; R1 signifies fluorine-substituted cycloalkyl; R2, R3 and R4 signify lower alkyl, single bond or alkylene bonded to B1, or R2 and R3 are united to signify alkylene; R5 and R7 signify hydrogen, lower alkyl, or a single bond or alkylene bonded to B2; R6 signifies hydrogen, lower alkyl or a group expressed as —N(R8)R9; and X− signifies an anion].
摘要翻译:本发明涉及具有选择性毒蕈碱M3受体拮抗作用,副作用小,适用于吸入治疗的化合物,并且可用作通式(I)的呼吸系统疾病的治疗剂; [其中A表示由式(a0)或(b0)表示的组; Ar表示任选取代的芳基或杂芳基; B 1和B 2表示脂族烃; R 1表示氟取代的环烷基; R 2,R 3和R 4表示低级烷基,单键或与B 1键合的亚烷基,或R 2和R 3一起表示亚烷基; R 5和R 7表示氢,低级烷基或与B 2键合的单键或亚烷基; R 6表示氢,低级烷基或以-N(R 8)R 9表示的基团; 而X - 表示阴离子]。
摘要:
This invention relates to compounds which exhibit selective muscarinic M3 receptor antagonism, have little side effects, are suitable for inhalation therapy and are useful as treating agents of respiratory system diseases, of the general formula (I); [in which A signifies a group expressed by a formula (a0) or (b0); Ar signifies optionally substituted aryl or heteroaryl; B1 and B2 signify aliphatic hydrocarbon; R1 signifies fluorine-substituted cycloalkyl; R2, R3 and R4 signify lower alkyl, single bond or alkylene bonded to B1, or R2 and R3 are united to signify alkylene; R5 and R7 signify hydrogen, lower alkyl, or a single bond or alkylene bonded to B2; R6 signifies hydrogen, lower alkyl or a group expressed as —N(R8)R9; and X− signifies an anion].
摘要翻译:本发明涉及具有选择性毒蕈碱性M3受体拮抗作用,副作用小,适用于吸入治疗的化合物,并且可用作通式(I)的呼吸系统疾病的治疗剂; [其中A表示一组表达 通式(a0)或(b0); Ar表示任选取代的芳基或杂芳基; B 1和B 2表示脂族烃; R 1表示氟取代的环烷基; R 2,R 3和R 4表示低级烷基,单键或与B 1键合的亚烷基,或R 2和R 3一起表示亚烷基; R 5和R 7表示氢,低级烷基或与B 2键合的单键或亚烷基; R 6表示氢,低级烷基或以-N(R 8)R 9表示的基团; 而X - 表示阴离子]。
摘要:
This invention relates to compounds which exhibit selective muscarinic M3 receptor antagonism, have little side effects, are suitable for inhalation therapy and are useful as treating agents of respiratory system diseases, of the general formula (I); [in which A signifies a group expressed by a formula (a0) or (b0); Ar signifies optionally substituted aryl or heteroaryl; B1 and B2 signify aliphatic hydrocarbon; R1 signifies fluorine-substituted cycloalkyl; R2, R3 and R4 signify lower alkyl, single bond or alkylene bonded to B1, or R2 and R3 are united to signify alkylene; R5 and R7 signify hydrogen, lower alkyl, or a single bond or alkylene bonded to B2; R6 signifies hydrogen, lower alkyl or a group expressed as —N(R8)R9; and X−signifies an anion].
摘要翻译:本发明涉及具有选择性毒蕈碱M 3受体拮抗作用,副作用小,适用于吸入治疗的化合物,并且可用作通式(I)的呼吸系统疾病的治疗剂; [其中A表示由式(a 0 SUB>)或(b 0>)表示的组; Ar表示任选取代的芳基或杂芳基; B 1和B 2表示脂族烃; R 1表示氟取代的环烷基; R 2,R 3和R 4表示低级烷基,单键或与B 1连接的亚烷基,或 R 2和R 3结合起来表示亚烷基; R 5和R 7表示氢,低级烷基或键合到B 2的单键或亚烷基; R 6表示氢,低级烷基或以-N(R 8)R 9表示的基团; 和X - 表示阴离子]。
摘要:
There are provided novel aminophosphonic acid derivatives of the general formula [I]: ##STR1## wherein n is an integer of 2 or 3; R.sup.1 is a phenyl, naphthyl, indolyl, benzothienyl, benzofuryl or benzoxazolyl group which may have 1 to 3 substituents selected from the group consisting of hydroxyl and lower alkyloxy groups, or a hydrogen atom; R.sup.2 is a lower alkyl group, a benzyl group, a 4-hydroxybenzyl group, a 3-indolylmethyl group or a .beta.-phenethyl group; and A is an optional residue of an amino acid selected from the group consisting of tryptophane, tyrosine, phenylalanine, homophenylalanine, naphthylalanine or N.sup..omega. -nitroarginine, and their pharmaceutically acceptable salts. The compounds according to the present invention and their pharmaceutically acceptable salts exhibit an inhibitory activity against endothelin-converting enzyme, and are expected to be useful as a drug treating various diseases with which endothelin is concerned.