WO2022203045A1 - 冷媒導入管を有する圧縮機 - Google Patents
冷媒導入管を有する圧縮機 Download PDFInfo
- Publication number
- WO2022203045A1 WO2022203045A1 PCT/JP2022/014407 JP2022014407W WO2022203045A1 WO 2022203045 A1 WO2022203045 A1 WO 2022203045A1 JP 2022014407 W JP2022014407 W JP 2022014407W WO 2022203045 A1 WO2022203045 A1 WO 2022203045A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refrigerant
- pipe
- compressor according
- compressor
- welding point
- Prior art date
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 72
- 230000006835 compression Effects 0.000 claims abstract description 69
- 238000007906 compression Methods 0.000 claims abstract description 69
- 238000003466 welding Methods 0.000 claims description 45
- 238000002347 injection Methods 0.000 claims description 38
- 239000007924 injection Substances 0.000 claims description 38
- 238000005219 brazing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 230000035515 penetration Effects 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 description 10
- 239000002826 coolant Substances 0.000 description 7
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010726 refrigerant oil Substances 0.000 description 1
Images
Classifications
-
- 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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- 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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
- F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/806—Pipes for fluids; Fittings therefor
Definitions
- Patent Document 1 Japanese Patent Application Laid-Open No. 59-82595
- a casing called a closed container and a compression mechanism for compressing refrigerant.
- a compression chamber exists in the compression mechanism.
- the compressor further has a refrigerant introduction pipe for guiding refrigerant outside the casing to the compression chamber.
- the magnitude relationship between the pressure of the refrigerant outside the casing and the pressure of the refrigerant inside the compression chamber may be reversed periodically.
- the refrigerant reciprocates along the refrigerant introduction pipe, thereby generating pulsation.
- This pulsation vibrates the refrigerant introduction pipe, which in turn induces noise in the compressor.
- a compressor includes a casing, a compression mechanism, and a refrigerant introduction pipe.
- the casing has a cylindrical portion.
- a cylinder surrounds the axis.
- a compression mechanism has a compression chamber.
- the compression mechanism is welded to the barrel at a first weld point.
- the coolant introduction pipe overlaps the first welding point in plan view along the direction in which the axis extends.
- the refrigerant introduction pipe is for introducing the refrigerant to the compression chamber.
- the refrigerant introduction pipe vibrates in the direction in which the cylindrical portion and the first welding point are aligned due to pressure pulsation of the refrigerant. Therefore, even if vibration is applied, the cylindrical portion and the refrigerant introduction pipe are less likely to move differently, so that the vibration of the compressor can be reduced.
- a compressor according to the second aspect is the compressor according to the first aspect, in which the refrigerant introduction pipe extends in the same direction as the line segment connecting the axis and the first welding point.
- the coolant introduction pipe extends in the arrangement direction of the cylindrical portion, the first welding point, and the coolant introduction pipe. Therefore, even if pressure pulsation of the refrigerant causes vibration in the direction in which the refrigerant introduction pipe extends, the vibration of the compressor can be reduced.
- the compressor according to the third aspect is the compressor according to the first aspect or the second aspect, wherein the compression mechanism is further welded to the cylindrical portion at the second welding point.
- the cylindrical portion and the compression mechanism are fixed not only by the first welding point but also by the second welding point. Therefore, the vibration of the compressor can be reduced more effectively.
- a compressor according to a fourth aspect is the compressor according to any one of the first to third aspects, further comprising a first brazing material that fixes at least the casing and the refrigerant introduction pipe.
- the coolant introduction pipe does not protrude into the internal space of the cylindrical portion.
- the first brazing material secures the fixation of the casing and the refrigerant introduction pipe, so the refrigerant introduction pipe does not need to protrude into the inner space of the cylindrical portion for stable assembly. Therefore, the first welding point for fixing the cylindrical portion and the compression mechanism can be easily arranged.
- the compressor according to the fifth aspect is the compressor according to the fourth aspect, further comprising a cylindrical inlet.
- the inlet is inserted into the compression mechanism.
- the inlet guides refrigerant from the refrigerant introduction pipe to the compression chamber.
- the casing further has a joint pipe surrounding the refrigerant introduction pipe. The refrigerant introduction pipe, the joint pipe, and the inlet are fixed together with brazing material.
- the coolant introduction pipe, the joint pipe, and the inlet are fixed to each other with brazing material. Therefore, rattling that can occur between these parts can be suppressed.
- a compressor according to a sixth aspect is the compressor according to the second aspect, in which the compression mechanism has a through portion.
- the through portion allows passage of the coolant in the direction in which the axis extends.
- a line segment connecting the axis and the first welding point does not intersect the penetration.
- the line segment connecting the axis and the first welding point does not pass through the through portion of the compression mechanism. Therefore, the penetrating portion is less likely to resonate due to the pressure pulsation of the refrigerant.
- a compressor according to a seventh aspect is the compressor according to the sixth aspect, wherein the compression mechanism has a cylinder, a piston, and a head.
- the piston cooperates with the cylinder to define a compression chamber.
- the head is attached to the cylinder to prevent the piston from moving out of the cylinder.
- the compression mechanism has a head. Therefore, refrigerant leakage from the compression chamber is suppressed.
- the compressor according to the eighth aspect is the compressor according to the seventh aspect, in which the through portion is provided in the head.
- the line segment connecting the axis and the first welding point does not pass through the penetrating portion provided in the head. Therefore, participation in vibration of the head can be reduced.
- the compressor according to the ninth aspect is the compressor according to the seventh aspect or the eighth aspect, wherein the first welding point fixes the head and the cylindrical portion.
- the first welding point fixes the head and the cylindrical portion. Therefore, participation in vibration of the head can be reduced.
- a compressor according to a tenth aspect is the compressor according to any one of the first to ninth aspects, further comprising a suction pipe, a discharge port, and an injection pipe.
- the suction pipe guides low pressure refrigerant to the compression chamber.
- the discharge pipe guides high pressure refrigerant out of the casing.
- the injection tube guides intermediate pressure refrigerant between low pressure and high pressure to the compression chamber.
- a coolant introduction pipe is the injection pipe.
- the refrigerant introduction pipe is an injection pipe. Therefore, vibration of the compressor due to refrigerant injection can be suppressed.
- An air conditioner according to the eleventh aspect includes the compressor according to any one of the first to tenth aspects.
- vibration of the compressor can be reduced in the air conditioner.
- FIG. 1 is a circuit diagram of an air conditioner 400 according to a first embodiment
- FIG. FIG. 4 is a cross-sectional view along a vertical plane of the compressor 90
- 3 is a cross-sectional view along the horizontal plane of the compressor 90.
- FIG. 2 is a cross-sectional view showing the structure of an injection pipe 19 and its surroundings;
- FIG. 1 shows an air conditioner 400 according to a basic embodiment.
- the air conditioner 400 has an outdoor unit 100 , an indoor unit 200 and a connecting pipe 300 .
- the outdoor unit 100 has a compressor 90 , a four-way switching valve 110 , an outdoor heat exchanger 120 , an outdoor fan 130 , an outdoor expansion valve 140 , a liquid closing valve 150 and a gas closing valve 160 .
- the indoor unit 200 has an indoor heat exchanger 220 and an indoor fan 230.
- the connecting pipe 300 has a liquid connecting pipe 310 and a gas connecting pipe 320 .
- the four-way switching valve 110 forms the solid line connection in FIG. 1, and the refrigerant circulates in the direction of arrow C.
- the indoor heat exchanger 220 functions as an evaporator and cooperates with the indoor fan 230 to provide cool air to the user.
- the four-way switching valve 110 forms the connection of the broken line in FIG. 1, and the refrigerant circulates in the direction of the arrow H.
- the indoor heat exchanger 220 functions as a condenser and cooperates with the indoor fan 230 to provide warm air to the user.
- FIG. 2 shows the compressor 90 .
- Compressor 90 draws in low pressure gaseous refrigerant and compresses it to produce high pressure gaseous refrigerant.
- Compressor 90 is a rotary compressor.
- Compressor 90 has casing 10 , suction pipe 15 , discharge pipe 16 , injection pipe 19 , motor 20 , crankshaft 30 and compression mechanism 40 .
- the casing 10 houses various components of the compressor 90, refrigerant, and lubricating oil.
- the casing 10 has a cylindrical portion 11, a lid portion 12 and a bottom portion 13 which are airtightly connected.
- the cylindrical portion 11 has a shape that is rotationally symmetrical with respect to the axis A and surrounds the axis A. As shown in FIG. Axis A extends in the z-direction.
- the motor 20 receives power from the outside of the compressor 90 and generates power to drive the compression mechanism 40 .
- a motor 20 is attached to the cylindrical portion 11 .
- the motor 20 has a stator 21 and a rotor 22 .
- the stator 21 has a cylindrical shape and is fixed to the cylindrical portion 11 . Stator 21 converts the power into an alternating magnetic field.
- the rotor 22 is arranged inside the stator 21 .
- Rotor 22 rotates by interacting with the alternating magnetic field emitted by stator 21 .
- crankshaft 30 A crankshaft 30 is fixed to the rotor 22 and rotates together with the rotor 22 . Crankshaft 30 transmits the rotational force generated by rotor 22 to compression mechanism 40 .
- the crankshaft 30 has a main shaft portion 31 and an eccentric portion 32 .
- the eccentric portion 32 is eccentric with respect to the main shaft portion 31 .
- a portion of the main shaft portion 31 is fixed to the rotor 22 .
- Eccentric portion 32 is located within compression mechanism 40 .
- the compression mechanism 40 generates high pressure gas refrigerant by compressing low pressure gas refrigerant.
- the compression mechanism 40 has a cylinder 41 , a piston 42 , a front head 46 , a rear head 47 and a muffler 48 .
- the cylinder 41 is a rigid component.
- a cavity is provided in the cylinder 41 .
- a piston 42 is received in the cavity.
- the piston 42 is a cylindrical member.
- Piston 42 also has a cavity in which eccentric 32 is mounted. The piston 42 revolves while being in contact with the cylinder 41 due to the rotation of the crankshaft 30 .
- the cylinder 41 and the piston 42 cooperate to define a compression chamber 45.
- the compression chamber 45 is a space surrounded by the cylinder 41 and the piston 42 that are in contact with each other.
- the volume of the compression chamber 45 increases and decreases as the piston 42 revolves.
- the front head 46 covers the upper surface of the cylinder 41.
- a front head 46 is attached to the cylinder 41 so as to prevent the piston 42 from moving out of the cylinder 41 .
- the front head 46 is provided with a discharge port 46 a for discharging the high pressure gas refrigerant from the compression chamber 45 .
- Front head 46 has a large diameter.
- a front head 46 is fixed to the cylindrical portion 11 of the casing 10 .
- the entire compression mechanism 40 is thereby fixed to the casing 10 .
- the rear head 47 closes the bottom surface of the cylinder 41 .
- a rear head 47 is attached to the cylinder 41 to prevent the piston 42 from moving out of the cylinder 41 .
- a muffler 48 is attached to the front head 46 so as to cover the discharge port 46a. The muffler 48 reduces noise caused by pressure pulsation of the high pressure gas refrigerant discharged from the discharge port 46a.
- suction pipe 15, discharge pipe 16, injection pipe 19 A suction pipe 15 , a discharge pipe 16 and an injection pipe 19 are attached to the casing 10 .
- the suction pipe 15 guides the low pressure gas refrigerant from outside the casing 10 to the compression chamber 45 .
- the discharge pipe 16 guides the high pressure gas refrigerant inside the casing 10 to the outside of the casing 10 .
- Injection tube 19 typically guides a relatively small amount of intermediate pressure refrigerant from outside casing 10 to compression chamber 45 .
- the intermediate pressure referred to here is the pressure between the pressure of the low-pressure refrigerant sucked from the suction pipe 15 and the pressure of the high-pressure gas refrigerant discharged from the discharge pipe 16 .
- FIG. 3 is a schematic cross-sectional view of the compressor 90 along a horizontal plane, that is, a plan view along the direction in which the axis A extends.
- the cross section of the cylindrical portion 11 of the casing 10 is shown with hatching.
- the front head 46 of the compression mechanism 40, the intake pipe 15 and the injection pipe 19 are shown from above.
- the front head 46 of the compression mechanism 40 is welded to the cylindrical portion at a first welding point W1, a second welding point W2, a third welding point W3, a fourth welding point W4, a fifth welding point W5, and a sixth welding point W6.
- a line segment L in the figure connects the axis A of the cylindrical portion 11 and the first welding point W1.
- the injection pipe 19 extends along this line segment L. In this figure, that is, in a plan view along the z-direction along which the axis A extends, the injection pipe 19 appears to overlap the first welding point W1.
- a through portion 46b is formed in the front head 46 of the compression mechanism 40 .
- the refrigerant inside the casing 10 can pass through the through portion 46b.
- the through portion 46b also has a function of facilitating attachment of the compression mechanism 40 to the cylindrical portion 11, a function of facilitating connection of the suction pipe 15 or the injection pipe 19 to the cylindrical portion 11 or the compression mechanism 40, and the like. may have In the drawing, the through portion 46b is provided in the central portion of the compression mechanism 40, while the through portion 46b may be provided as a notch in the peripheral edge of the compression mechanism 40.
- FIG. The through portion 46b is provided at a position such that the line segment L does not cross the intersection of the through portion 46b.
- FIG. 4 shows the injection pipe 19 and its periphery.
- the casing 10 further has a cylindrical joint pipe 11 a erected on the cylindrical portion 11 .
- the joint pipe 11 a is welded to the cylindrical portion 11 .
- the injection pipe 19 is inserted into the joint pipe 11 a while being connected to the cylindrical inlet 70 .
- Inlet 70 is inserted into compression mechanism 40 .
- Inlet 70 guides refrigerant from injection pipe 19 to compression chamber 45 of compression mechanism 40 .
- the joint pipe 11 a surrounds the injection pipe 19 and the inlet 70 .
- the casing 10 and the injection pipe 19 are fixed to each other by a brazing material 80.
- the application location of the brazing material 80 may vary.
- the injection pipe 19, the joint pipe 11a, and the inlet 70 may be fixed together by the brazing material 80.
- the injection pipe 19 is attached to the cylindrical portion 11 so as not to protrude into the internal space of the cylindrical portion 11 .
- the attachment structure described above with respect to the injection pipe 19 may be applied to the suction pipe 15.
- the injection pipe 19 extends in the direction in which the cylindrical portion 11, the first welding point W1, and the injection pipe 19 are arranged. Therefore, even if the pressure pulsation of the refrigerant causes vibration in the direction in which the injection pipe 19 extends, the vibration of the compressor 90 can be reduced.
- the cylindrical portion 11 and the compression mechanism 40 are fixed not only by the first welding point W1 but also by the second welding point W2, the third welding point W3, the fourth welding point W4, the fifth welding point W5, and the sixth welding point W6. be done. Therefore, the vibration of the compressor 90 can be reduced more effectively.
- a line segment L connecting the axis A and the first welding point W1 does not pass through the through portion 46b of the compression mechanism 40. As shown in FIG. Therefore, the penetrating portion 46b is less likely to resonate due to the pressure pulsation of the refrigerant.
- the compression mechanism 40 has one cylinder 41 .
- the compression mechanism 40 may have two or more cylinders 41 .
- the injection pipe 19 in order to suppress vibration caused by pressure pulsation in the injection pipe 19, the injection pipe 19 extends along the z direction in which the axis A extends. It overlaps with the first welding point W1 in plan view seen from above. Alternatively, or in addition to this, the suction pipe 15 may overlap with one of the welding points in plan view along the z direction in which the axis A extends.
- the injection pipe 19, the joint pipe 11a, and the inlet 70 are fixed together by a single brazing material 80.
- a single brazing material 80 may be used to fix at least a portion of the injection pipe 19, the suction pipe 15, the cylindrical portion 11, the joint pipe 11a, and the inlet 70 to each other.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Rotary Pumps (AREA)
Abstract
Description
(1)全体構成
図1は、基本実施形態に係る空気調和機400を示す。空気調和機400は、室外ユニット100、室内ユニット200、連絡配管300を有する。
図2は、圧縮機90を示す。圧縮機90は、低圧ガス冷媒を吸入し、それを圧縮することによって、高圧ガス冷媒を生成する。圧縮機90は、ロータリー圧縮機である。圧縮機90は、ケーシング10、吸入管15、吐出管16、インジェクション管19、モータ20、クランク軸30、圧縮機構40を有する。
ケーシング10は、圧縮機90の各種構成要素、冷媒、潤滑油を収容する。ケーシング10は、気密的に接続された円筒部11、蓋部12、及び底部13を有する。円筒部11は軸線Aに対して回転対象の形状を有しており、軸線Aを包囲している。軸線Aは、z方向に延びている。ケーシング10の内部には、潤滑油が貯留される油貯留部17が存在する。
モータ20は、圧縮機90の外部から電力の供給を受け、圧縮機構40を駆動する動力を発生する。モータ20は、円筒部11に取り付けられている。モータ20は、ステータ21、及びロータ22を有する。
クランク軸30はロータ22に固定されており、ロータ22とともに回転する。クランク軸30は、ロータ22が生み出す回転力を圧縮機構40へ伝達する。
圧縮機構40は、低圧ガス冷媒を圧縮することによって高圧ガス冷媒を生成する。圧縮機構40は、シリンダ41、ピストン42、フロントヘッド46、リアヘッド47、マフラ48を有する。
吸入管15、吐出管16、インジェクション管19はケーシング10に取り付けられる。吸入管15は、低圧ガス冷媒をケーシング10の外部から圧縮室45へ案内する。吐出管16は、ケーシング10の内部にある高圧ガス冷媒をケーシング10の外へ案内する。インジェクション管19は、典型的には比較的少量かつ中間圧の冷媒をケーシング10の外部から圧縮室45へ案内する。ここでいう中間圧とは、吸入管15から吸入される低圧冷媒の圧力と、吐出管16から吐出される高圧ガス冷媒の圧力との間の圧力である。
図3は、水平面に沿った圧縮機90の模式的な断面図であり、すなわち、軸線Aの延びる方向に沿って見た平面視である。本図において、ケーシング10の円筒部11は、ハッチングを付した態様で断面が示されている。一方、圧縮機構40のフロントヘッド46、吸入管15、及びインジェクション管19は、上面が示されている。
図4は、インジェクション管19及びその周辺を示す。
(5-1)
インジェクション管19は、冷媒の圧力脈動に起因して、円筒部11と第1溶接点W1が配列する方向、すなわち線分Lが延びる方向に振動する。したがって、振動が印加されても円筒部11とインジェクション管19が異なる動きをするおそれが少ないので、圧縮機90の振動を低減できる。
インジェクション管19は、円筒部11、第1溶接点W1、及びインジェクション管19の配列方向に延びる。したがって、冷媒の圧力脈動が、インジェクション管19が延びる方向に振動を発生させても、圧縮機90の振動を低減できる。
円筒部11と圧縮機構40は、第1溶接点W1のみならず第2溶接点W2、第3溶接点W3、第4溶接点W4、第5溶接点W5、及び第6溶接点W6によっても固定される。したがって、圧縮機90の振動をより効果的に低減できる。
ロウ材80がケーシング10とインジェクション管19との固定を確保するので、安定した組立のためにインジェクション管19が円筒部11の内部空間へ突出する必要がない。したがって、円筒部11と圧縮機構40を固定する第1溶接点W1を容易に配置できる。
インジェクション管19、継手管11a、及びインレット70は、ロウ材80によって互いに固定される。したがって、これらの部品の間で生じうるガタツキを抑制できる。
軸線Aと第1溶接点W1とを結ぶ線分Lは圧縮機構40の貫通部46bを通過しない。したがって、貫通部46bが冷媒の圧力脈動によって共振するおそれが少ない。
軸線Aと第1溶接点W1とを結ぶ線分Lは、フロントヘッド46に設けられる貫通部46bを貫通しない。したがって、フロントヘッド46の振動への関与を低減できる。
圧縮機90の振動が低減するので、空気調和機400の動作が安定し、安全性が向上する。
(6-1)基本実施形態の第1変形例
基本実施形態の圧縮機90では、圧縮機構40が1つのシリンダ41を有している。これに代えて、圧縮機構40が2つ以上のシリンダ41を有してもよい。
基本実施形態の圧縮機90では、インジェクション管19の圧力脈動に起因する振動を抑制するために、インジェクション管19が軸線Aの延びるz方向に沿って見た平面視において第1溶接点W1と重なっている。これに代えて、又は、これに加えて、吸入管15が軸線Aの延びるz方向に沿って見た平面視においていずれかの溶接点と重なっていてもよい。
基本実施形態の圧縮機90では、インジェクション管19、継手管11a、及びインレット70が、単一のロウ材80によって互いに固定される。これに代えて、インジェクション管19、吸入管15、円筒部11、継手管11a、インレット70の少なくとも一部を互いに固定するために、複数の種類のロウ材が用いられてもよい。
以上、本開示の実施形態を説明したが、請求の範囲に記載された本開示の趣旨及び範囲から逸脱することなく、形態や詳細の多様な変更が可能なことが理解されるであろう。
11 :円筒部
11a :継手管
15 :吸入管(冷媒導入管)
16 :吐出管
19 :インジェクション管(冷媒導入管)
40 :圧縮機構
41 :シリンダ
42 :ピストン
45 :圧縮室
46 :フロントヘッド(ヘッド)
46b :貫通部
47 :リアヘッド(ヘッド)
70 :インレット
80 :ロウ材
90 :圧縮機
100 :室外ユニット
200 :室内ユニット
300 :連絡配管
400 :空気調和機
A :軸線
L :線分
W1 :第1溶接点
W2 :第2溶接点
W3 :第3溶接点
W4 :第4溶接点
W5 :第5溶接点
W6 :第6溶接点
z :軸線の延びる方向
Claims (11)
- 軸線(A)を包囲する円筒部(11)を有するケーシング(10)と、
圧縮室(45)を有し、第1溶接点(W1)において前記円筒部に溶接される圧縮機構(40)と、
前記軸線の延びる方向(z)に沿って見た平面視において前記第1溶接点と重なっている、前記圧縮室に冷媒を導くための冷媒導入管(15、19)と、
を備える、圧縮機(90)。 - 前記冷媒導入管は、前記軸線と前記第1溶接点を結ぶ線分(L)と同じ方向に延びる、
請求項1に記載の圧縮機。 - 前記圧縮機構は、第2溶接点(W2)によってさらに前記円筒部に溶接される、
請求項1又は請求項2に記載の圧縮機。 - 少なくとも前記ケーシングと前記冷媒導入管とを固定するロウ材(80)、
をさらに備え、
前記冷媒導入管は、前記円筒部の内部空間へ突出しない、
請求項1から3のいずれか1項に記載の圧縮機。 - 前記圧縮機構に挿入され、前記冷媒を前記冷媒導入管から前記圧縮室へ案内する円筒状のインレット(70)、
をさらに備え、
前記ケーシングは、前記冷媒導入管を包囲する継手管(11a)をさらに有し、
前記冷媒導入管、前記継手管、及び前記インレットは、前記ロウ材によって互いに固定される、
請求項4に記載の圧縮機。 - 前記圧縮機構は、前記軸線の延びる前記方向への前記冷媒の通過を許す貫通部(46b)を有し、
前記軸線と前記第1溶接点とを結ぶ前記線分は、前記貫通部と交差しない、
請求項2に記載の圧縮機。 - 前記圧縮機構は、
シリンダ(41)、
前記シリンダと協働して前記圧縮室を画定するピストン(42)、及び
前記ピストンが前記シリンダの外部へ移動することを妨げるように前記シリンダに取り付けられるヘッド(46、47)、
を有する、
請求項6に記載の圧縮機。 - 前記貫通部は前記ヘッドに設けられる、
請求項7に記載の圧縮機。 - 前記第1溶接点は前記ヘッドと前記円筒部とを固定する、
請求項7又は請求項8に記載の圧縮機。 - 低圧の前記冷媒を前記圧縮室へ案内する吸入管(15)と、
高圧の前記冷媒を前記ケーシングの外へ案内する吐出管(16)と、
前記低圧及び前記高圧の間の中間圧の前記冷媒を前記圧縮室へ案内するインジェクション管(19)と、
をさらに備え、
前記冷媒導入管は、前記インジェクション管である、
請求項1から9のいずれか1項に記載の圧縮機。 - 請求項1から10のいずれか1項に記載の圧縮機、
を備える、空気調和機(400)。
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EP22775826.5A EP4317694A1 (en) | 2021-03-26 | 2022-03-25 | Compressor having refrigerant introduction pipe |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57102594A (en) * | 1980-12-19 | 1982-06-25 | Hitachi Ltd | Rotary compressor |
JPS5982595A (ja) | 1982-11-02 | 1984-05-12 | Matsushita Electric Ind Co Ltd | 密閉型電動圧縮機の振動低減装置 |
JP2009222329A (ja) * | 2008-03-18 | 2009-10-01 | Daikin Ind Ltd | 冷凍装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH05157069A (ja) * | 1991-12-05 | 1993-06-22 | Daikin Ind Ltd | スクロール形流体機械 |
JP5157069B2 (ja) | 2006-01-18 | 2013-03-06 | カシオ計算機株式会社 | 画像管理装置 |
JP2012117409A (ja) * | 2010-11-30 | 2012-06-21 | Daikin Industries Ltd | 圧縮機 |
JP6197922B1 (ja) | 2016-06-22 | 2017-09-20 | ダイキン工業株式会社 | 圧縮機及び弁組立体 |
JP2018193965A (ja) | 2017-05-22 | 2018-12-06 | ダイキン工業株式会社 | 圧縮機 |
JP6943310B2 (ja) | 2018-04-03 | 2021-09-29 | ダイキン工業株式会社 | 圧縮機 |
JP7329772B2 (ja) * | 2019-09-02 | 2023-08-21 | パナソニックIpマネジメント株式会社 | インジェクション機構付き圧縮機 |
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2022
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57102594A (en) * | 1980-12-19 | 1982-06-25 | Hitachi Ltd | Rotary compressor |
JPS5982595A (ja) | 1982-11-02 | 1984-05-12 | Matsushita Electric Ind Co Ltd | 密閉型電動圧縮機の振動低減装置 |
JP2009222329A (ja) * | 2008-03-18 | 2009-10-01 | Daikin Ind Ltd | 冷凍装置 |
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JP2023037002A (ja) | 2023-03-14 |
JP7376840B2 (ja) | 2023-11-09 |
JP2022150654A (ja) | 2022-10-07 |
JP7260804B2 (ja) | 2023-04-19 |
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