WO2016181558A1 - Compressor muffler - Google Patents

Compressor muffler Download PDF

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Publication number
WO2016181558A1
WO2016181558A1 PCT/JP2015/063945 JP2015063945W WO2016181558A1 WO 2016181558 A1 WO2016181558 A1 WO 2016181558A1 JP 2015063945 W JP2015063945 W JP 2015063945W WO 2016181558 A1 WO2016181558 A1 WO 2016181558A1
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WO
WIPO (PCT)
Prior art keywords
outer shell
compressor
pipe
refrigerant
muffler
Prior art date
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PCT/JP2015/063945
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French (fr)
Japanese (ja)
Inventor
匡宏 中谷
修平 小山
長田　淳
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2017517572A priority Critical patent/JP6501876B2/en
Priority to PCT/JP2015/063945 priority patent/WO2016181558A1/en
Publication of WO2016181558A1 publication Critical patent/WO2016181558A1/en

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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
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant

Definitions

  • the present invention relates to a compressor muffler, and more particularly to the arrangement of refrigerant introduction pipes and outlet pipes.
  • the refrigerant discharged from the compressor is discharged in synchronization with the operating frequency of the prime mover. Is done.
  • the pressure of the refrigerant already in the discharge space is different from the pressure of the compressed refrigerant, the pressure in the space immediately after the discharge fluctuates, and a refrigerant density wave (hereinafter referred to as “pulsation”) is generated.
  • the refrigerant immediately after discharge is once released into a space having a sufficiently large volume, such as in the compressor or a part of the space, to reduce pressure fluctuation in the space and suppress pulsation.
  • a space having a sufficiently large volume such as in the compressor or a part of the space
  • the pulsation cannot be sufficiently relaxed due to a lack of space in the compressor or a high discharge pressure, there is a risk of vibration due to pulsation, increased noise, and damage to the piping due to increased piping load. is there.
  • a container (hereinafter referred to as a “compressor muffler”) having a sufficient volume capable of reducing the pulsation of the discharged refrigerant is installed between the compressor and the high-pressure heat exchanger.
  • compressor muffler a container having a sufficient volume capable of reducing the pulsation of the discharged refrigerant.
  • a crankshaft having an eccentric shaft is driven to rotate, and the refrigerant is compressed using the space in the cylinder as a compression chamber.
  • refrigerating machine oil is used in order to lubricate between the parts driven inside the compressor and the parts that support them and to improve the durability.
  • refrigeration oil is engulfed in the refrigerant during compression, and is discharged from the compressor together with the high-temperature and high-pressure refrigerant.
  • a structure is required in which the refrigeration oil quickly returns to the compressor.
  • the present invention has been made against the background of the above-described problems. It is an object of the present invention to provide a compressor muffler that can be manufactured at low cost while suppressing the manufacturing cost while ensuring the ability to reduce refrigerant pulsation.
  • a compressor muffler is disposed on a refrigerant discharge side of the compressor in a refrigerant circuit formed by sequentially connecting a compressor, a high-pressure side heat exchanger, a throttle device, and a low-pressure side heat exchanger, and the compressor
  • a compressor muffler having an outer shell that forms a space for relaxing the pulsation of refrigerant discharged from the refrigerant, and storing the refrigerating machine oil separated from the refrigerant in a lower portion of the outer shell;
  • An inlet pipe connected to the refrigerant discharge side of the machine, a lead-out pipe inserted into the lower surface side of the outer shell and connected to the refrigerant suction side of the high-pressure side heat exchanger, a lower part inside the outer shell, and the An oil return pipe that connects the refrigerant suction side of the compressor and returns the refrigerating machine oil collected in the lower part of the outer shell to the compressor, and the outlet pipe has a leading end of the outlet pipe in
  • the compressor muffler fixes the introduction pipe to the upper side of the outer shell, fixes the outlet pipe to the lower side of the outer shell, and arranges the leading end of the outlet pipe above the leading end of the inlet pipe. It is possible to secure a space for the fillet welding of the introduction pipe and the lead-out pipe to the outer shell, thereby eliminating the brazing process in the furnace while ensuring the performance of reducing the refrigerant pulsation, and the production cost A compressor muffler that can be manufactured at low cost can be obtained.
  • FIG. 1 It is a schematic block diagram which shows the refrigerant circuit of the refrigerating cycle which concerns on Embodiment 1 of this invention. It is a side view which shows the structure of the compressor which concerns on Embodiment 1 of this invention, and a compressor muffler. It is explanatory drawing which showed the structure of the compressor muffler 5 in a prior art. It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 2 of this invention. It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 3 of this invention. It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 4 of this invention.
  • FIG. 1 is a schematic configuration diagram showing a refrigerant circuit of a refrigeration cycle according to Embodiment 1 of the present invention.
  • the refrigerant circuit is obtained by connecting the compressor 1, the compressor muffler 5, the high-pressure side heat exchanger 2, the expansion device 3, and the low-pressure side heat exchanger 4 by refrigerant piping.
  • the refrigerant in the refrigerant circuit circulates as follows.
  • the compressor 1 compresses the low-pressure refrigerant gas and discharges the high-pressure refrigerant gas.
  • the discharged refrigerant passes through the compressor side discharge pipe 7 and the muffler side inflow pipe 7a and enters the compressor muffler 5 to separate the refrigerant and the refrigeration oil.
  • FIG. 2 is a side view showing the structure of the compressor 1 and the compressor muffler 5 according to Embodiment 1 of the present invention.
  • the compressor muffler 5 is provided on the side surface of the compressor 1 so that the refrigerant flows to the compressor muffler 5 immediately after being discharged from the compressor 1.
  • the high-temperature and high-pressure refrigerant compressed by the compressor 1 flows from the compressor-side discharge pipe 7 into the compressor muffler 5 through the muffler-side inflow pipe 7a. Thereby, the influence on the refrigerant circuit due to the pulsation of the refrigerant immediately after being discharged from the compressor 1 is minimized.
  • the compressor muffler 5 also has a function of separating refrigeration oil in the refrigerant.
  • the refrigerant from which the refrigeration oil is separated passes through the muffler side discharge pipe 8 and is sent to the high pressure side heat exchanger 2.
  • the refrigerating machine oil accumulates at the bottom of the compressor muffler 5 and returns to the compressor 1 from the suction pipe 6 through the oil return pipe 9.
  • FIG. 3 is an explanatory view showing the structure of the compressor muffler 50 in the prior art.
  • the outer shell 26 of the compressor muffler 50 has a structure in which the outlet pipe 21 and the inlet pipe 22 are brazed by brazing in the furnace.
  • Brazing can be used for joining parts having complicated shapes and joining pipes that require airtightness such as a refrigerant circuit. Brazing has the advantage of being able to cope with complex shapes and ensuring airtightness.
  • a special brazing method called “brazing in the furnace” is used because there is a case where the amount of heat is insufficient when rolling, the member cannot be heated completely, and the braze may not melt.
  • a thick member is heated in the furnace over time to warm the whole member, so that the solder is easily melted into the back. Therefore, special equipment and time are required, and as a result, the manufacturing cost of the compressor muffler 5 increases.
  • FIG. 4 is an explanatory diagram showing the structure of the compressor muffler according to the first embodiment of the present invention.
  • brazing in the furnace of the lead-out pipe 11 and the introduction pipe 12 which have a high processing cost, is abolished in the prior art and is changed to fillet welding that can be processed at low cost.
  • the outer shell 16 has, for example, a configuration including three parts.
  • the outer shell 16 includes an upper shell 13, an intermediate shell 14, and a lower shell 15.
  • the outer shell 16 constitutes a sealed space, and relieves pulsation of the refrigerant discharged from the compressor 1 due to its enlarged volume.
  • the muffler side inflow pipe 7 a is connected to an introduction pipe 12 fixed to the upper shell 13, and the introduction pipe 12 is connected to the introduction pipe tip 10 inside the compressor muffler 5.
  • the introduction pipe distal end portion 10 is arranged by being bent in the horizontal direction so as to be directed substantially in the inner circumferential direction in the outer shell 16. In other words, the inlet tube tip 10 has a shape along the cylindrical shape inside the compressor muffler 5.
  • the compressed refrigerant is discharged from the inlet tube tip 10 in a direction along the circumferential direction of the cylindrical surface inside the compressor muffler 5.
  • the compressed refrigerant that has flowed into the outer shell 16 descends due to gravity while rotating along the inner peripheral surface of the outer shell 16, so that the compressed refrigerant swirls and spirals down.
  • the refrigerated refrigeration oil in the compressed refrigerant subjected to the centrifugal force has a higher specific gravity than the refrigerant, the cyclone effect of colliding with and adhering to the inner peripheral surface of the outer shell 16 is formed. appear. Thereby, the mist refrigerating machine oil contained in the compressed gas is gradually separated from the refrigerant.
  • the refrigerating machine oil separated by the centrifugal force gathers on the wall side in the outer shell 16 and falls down and accumulates at the bottom of the compressor muffler 5.
  • the high-temperature and high-pressure gas refrigerant passes through the outlet pipe 11 and is guided from the muffler-side discharge pipe 8 to the high-pressure side heat exchanger 2.
  • the introduction pipe 12 is inserted through the center of the cylindrical upper shell 13 from the upper surface side and welded by fillet welding.
  • a lead-out pipe 11 is inserted through the center of the cylindrical lower shell 15 from below and welded by fillet welding.
  • the oil return nozzle base 9a is welded to the outer periphery of the lower shell 15 by fillet welding.
  • the inlet pipe tip 10 is brazed to the inner end of the outer pipe 16 of the inlet pipe 12.
  • a lead-out tube tip 11a is brazed to the end of the lead-out tube 11 inside the shell.
  • the tip of the outlet pipe tip 11a (corresponding to the “leader pipe tip” of the present invention) is the tip of the inlet pipe tip 10 ( It corresponds to the “leading tube tip” of the present invention). Then, the muffler side inflow pipe 7a is brazed to the introduction pipe 12, the muffler side discharge pipe 8 to the outlet pipe 11, and the oil return pipe 9 to the oil return pipe base 9a.
  • the introduction tube tip 10 is described as being connected to the introduction tube 12 by silver brazing, but the introduction tube tip 10 and the introduction tube 12 are integrally formed. It may be a thing.
  • the inlet tube tip 10 and the inlet tube 12 may be connected before the inlet tube 12 is fixed to the upper shell 13.
  • the lead-out tube tip portion 11a is described as being connected to the lead-out tube 11 by silver brazing, but the lead-out tube tip portion 11a and the lead-out tube 11 may be integrally formed.
  • the lead-out pipe tip 11 a and the lead-out pipe 11 may be connected before the lead-out pipe 11 is fixed to the lower shell 15.
  • the oil return nozzle 9a is provided on the outer peripheral portion of the outer shell 16, but the oil return nozzle 9a may be fixed so as to be inserted from the lower surface of the lower shell 15.
  • the introduction pipe 12 is fixed to the upper shell 13, and the outlet pipe 11 is fixed to the lower shell 15 so that the inlet pipe 12 and the outlet pipe 11 are surrounded. Space can be secured. Thereby, the inlet pipe 12 and the outlet pipe 11 can be fillet welded to the outer shell 16. Further, the compressor muffler 5 of the present embodiment arranges the tip of the outlet tube tip 11a installed vertically upward in the outer shell 16 above the tip of the inlet tube tip 10 so that the refrigerator oil As a result, the function of separating the refrigerating machine oil from the refrigerant and the ability to reduce the refrigerant pulsation can be secured. With the above configuration, the in-furnace brazing process at the time of manufacture can be abolished while ensuring the conventional functions, and the compressor muffler 5 that can be manufactured at low cost can be obtained.
  • FIG. FIG. 5 is an explanatory view showing the structure of a compressor muffler 5a according to Embodiment 2 of the present invention.
  • the compressor muffler 5a according to the present embodiment is modified such that the outer shell 16 of the compressor muffler 5 according to the first embodiment is composed of two parts, an upper shell 13 and a lower shell 15.
  • FIG. FIG. 6 is an explanatory diagram showing the structure of the compressor muffler 5b according to Embodiment 3 of the present invention.
  • the compressor muffler 5b according to the present embodiment is a compressor muffler 5a according to the first embodiment in which an introduction pipe 12 and a lead-out pipe 11 are provided integrally with components constituting the outer shell 16b.
  • the configuration of the outer shell 16b is composed of three parts, and the upper shell 13b and the lower shell 15b are integrally formed and processed at portions corresponding to the introduction pipe 12 and the outlet pipe 11.
  • the upper shell 13 and the lower shell 15 are formed and processed by forging or cutting, or both.
  • the upper shell 13b and the lower shell 15b shown in FIG. 6 have a shape corresponding to the introduction pipe 12 and the outlet pipe 11 provided at the center of the cylindrical shape, the outer peripheral portion and the inner peripheral portion.
  • portions corresponding to the introduction pipe 12 and the lead-out pipe 11 can be processed or molded.
  • the introduction pipe 12 portion is integrally formed with the upper shell 13 and the lead-out pipe 11 portion is integrally formed with the lower shell 15 to fix the introduction pipe 12 and the lead-out pipe 11.
  • Brazing in the furnace can be abolished.
  • locations, such as a number of parts and brazing can be reduced and cost reduction is attained.
  • FIG. 7 shows a compressor muffler 5c according to the fourth embodiment of the present invention.
  • the outer shell 16c is composed of two parts, an upper shell 13c and a lower shell 15c.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
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Abstract

Provided is a compressor muffler that can be manufactured at low cost. A compressor muffler (5) is disposed on the refrigerant-discharge side of a compressor (1), and equipped with an outer shell (16) that forms a space for dampening the pulsation of the refrigerant gas discharged from the compressor (1). Separated refrigeration oil is accumulated at a lower portion of the outer shell (16). The outer shell (16) is equipped with a lead-in pipe (12), a lead-out pipe (11), and an oil returning pipe (9). The lead-out pipe (11) is fixed in such a manner that the lead-out pipe leading end located within the outer shell is located above the lead-in pipe leading end.

Description

圧縮機マフラーCompressor muffler
　本発明は、圧縮機マフラーに関し、特に冷媒の導入管及び導出管の配置に関する。 The present invention relates to a compressor muffler, and more particularly to the arrangement of refrigerant introduction pipes and outlet pipes.
　圧縮機、高圧側熱交換器、絞り装置、及び低圧側熱交換器を冷媒配管などで順次環状に接続して成る冷媒回路において、圧縮機から吐出された冷媒は原動機の運転周波数に同調し吐出される。この時、すでに吐出空間ある冷媒と圧縮された冷媒の圧力が異なるため吐出直後の空間の圧力が変動し、冷媒の粗密波（以下「脈動」と呼ぶ。）が発生する。その抑制方法の１つとして、吐出直後の冷媒を一度、圧縮機内又はその一部の空間などの十分に大きな容積を持った空間に解放し、空間内での圧力変動を小さくし脈動を抑制する方法がある。しかし、圧縮機内に空間を確保できない、また吐出圧力が高い等、脈動が大きく十分に緩和することができない場合、脈動による振動、騒音の増大、並びに配管の負荷増大による配管の破損等の危険がある。そのため、冷媒回路の脈動が大きい場合は、圧縮機と高圧側熱交換器の間に、吐出冷媒の脈動を緩和できる十分な容積を持った容器（以下「圧縮機マフラー」と呼ぶ。）を設置し、吐出冷媒の脈動を低減する方法がある。 In a refrigerant circuit in which a compressor, a high-pressure side heat exchanger, an expansion device, and a low-pressure side heat exchanger are sequentially connected in an annular manner through refrigerant piping, the refrigerant discharged from the compressor is discharged in synchronization with the operating frequency of the prime mover. Is done. At this time, since the pressure of the refrigerant already in the discharge space is different from the pressure of the compressed refrigerant, the pressure in the space immediately after the discharge fluctuates, and a refrigerant density wave (hereinafter referred to as “pulsation”) is generated. As one of the suppression methods, the refrigerant immediately after discharge is once released into a space having a sufficiently large volume, such as in the compressor or a part of the space, to reduce pressure fluctuation in the space and suppress pulsation. There is a way. However, if the pulsation cannot be sufficiently relaxed due to a lack of space in the compressor or a high discharge pressure, there is a risk of vibration due to pulsation, increased noise, and damage to the piping due to increased piping load. is there. Therefore, when the pulsation of the refrigerant circuit is large, a container (hereinafter referred to as a “compressor muffler”) having a sufficient volume capable of reducing the pulsation of the discharged refrigerant is installed between the compressor and the high-pressure heat exchanger. In addition, there is a method for reducing the pulsation of the discharged refrigerant.
　また、例えば、ロータリー圧縮機においては、偏心軸を持つクランクシャフトを回転駆動し、シリンダ内の空間を圧縮室として冷媒を圧縮する。このときに、圧縮機内部で駆動する部品とそれらを支える部品との間を潤滑し、耐久性を向上させるために冷凍機油が使用されている。圧縮機内では圧縮時に冷媒に冷凍機油が巻き込まれ、高温高圧冷媒とともに圧縮機から吐出される。圧縮機で必要とする潤滑油量を確保するためにも、速やかに冷凍機油が圧縮機に戻るような構造が必要となる。 Also, for example, in a rotary compressor, a crankshaft having an eccentric shaft is driven to rotate, and the refrigerant is compressed using the space in the cylinder as a compression chamber. At this time, refrigerating machine oil is used in order to lubricate between the parts driven inside the compressor and the parts that support them and to improve the durability. In the compressor, refrigeration oil is engulfed in the refrigerant during compression, and is discharged from the compressor together with the high-temperature and high-pressure refrigerant. In order to secure the amount of lubricating oil required by the compressor, a structure is required in which the refrigeration oil quickly returns to the compressor.
　例えば、特許文献１に開示されている技術では、冷媒による脈動の低減及び冷媒から冷凍機油分離できるサイクロン式油分離機能を持った圧縮機マフラーが提案されている。当該圧縮機マフラーの外殻を構成する上側蓋部に導入管及び導出管を取り付け、外郭を構成する下側蓋部には返油管を設けていた。そして、特許文献１に係る圧縮機マフラーは、上側蓋部と下側蓋部とを接続する円筒形状の堅胴部を備えていた。堅胴部は、簡素な構成で安価かつ容易に入手ができ、かつ容易に管心方向の長さを変更できるため、圧縮機マフラーの容量を容易に変更することができる利点があった。 For example, in the technology disclosed in Patent Document 1, a compressor muffler having a cyclone type oil separation function capable of reducing pulsation due to refrigerant and separating refrigeration oil from the refrigerant is proposed. An introduction pipe and a lead-out pipe were attached to the upper lid portion constituting the outer shell of the compressor muffler, and an oil return pipe was provided in the lower lid portion constituting the outer shell. And the compressor muffler which concerns on patent document 1 was equipped with the cylindrical rigid trunk | drum which connects an upper side cover part and a lower side cover part. The rigid body portion can be easily obtained at a low cost with a simple configuration, and the length in the tube center direction can be easily changed. Therefore, there is an advantage that the capacity of the compressor muffler can be easily changed.
特開２００９－７４７５６号公報JP 2009-74756 A
　しかし、特許文献１に開示されている圧縮機マフラーは、上側蓋部に導入管及び導出管が設けられていることから、導入管及び導出管と外殻とを隅肉溶接により固定するスペースがなく、導入管及び導出管を炉中ロウ付けにより取り付ける工程としていた。これにより、部品数や工程数が増え、圧縮機マフラー製作のコストがかかっていた。 However, since the compressor muffler disclosed in Patent Document 1 is provided with the introduction pipe and the lead-out pipe in the upper lid portion, there is a space for fixing the lead-in pipe, the lead-out pipe and the outer shell by fillet welding. Instead, the introduction pipe and the lead-out pipe are attached by brazing in the furnace. As a result, the number of parts and processes increased, and the cost of manufacturing the compressor muffler was high.
　本発明は、上記のような課題を背景としてなされたもので、冷媒脈動を緩和性能を確保しつつ、製作コストを抑制し、安価に製作可能な圧縮機マフラーを提供することを目的とする。 The present invention has been made against the background of the above-described problems. It is an object of the present invention to provide a compressor muffler that can be manufactured at low cost while suppressing the manufacturing cost while ensuring the ability to reduce refrigerant pulsation.
　本発明に係る圧縮機マフラーは、圧縮機、高圧側熱交換器、絞り装置、及び低圧側熱交換器を順次接続して成る冷媒回路の前記圧縮機の冷媒吐出側に配備され、前記圧縮機から吐出された冷媒の脈動を緩和する空間を形成する外殻を備え、冷媒から分離した冷凍機油を該外殻の下部に溜める圧縮機マフラーにおいて、該外殻の上面側に挿入され、前記圧縮機の冷媒吐出側と接続される導入管と、該外殻の下面側に挿入され、前記高圧側熱交換器の冷媒吸入側と接続される導出管と、前記外殻の内部の下部と前記圧縮機の冷媒吸入側とを連結し、前記外殻の下部に溜まる前記冷凍機油を前記圧縮機へ戻す返油管と、を備え、前記導出管は、前記外殻内の導出管先端部が、前記外殻内を鉛直方向に上向きに設置され、前記外殻内の導入管先端部よりも上に位置するように、前記外殻に固定される。 A compressor muffler according to the present invention is disposed on a refrigerant discharge side of the compressor in a refrigerant circuit formed by sequentially connecting a compressor, a high-pressure side heat exchanger, a throttle device, and a low-pressure side heat exchanger, and the compressor A compressor muffler having an outer shell that forms a space for relaxing the pulsation of refrigerant discharged from the refrigerant, and storing the refrigerating machine oil separated from the refrigerant in a lower portion of the outer shell; An inlet pipe connected to the refrigerant discharge side of the machine, a lead-out pipe inserted into the lower surface side of the outer shell and connected to the refrigerant suction side of the high-pressure side heat exchanger, a lower part inside the outer shell, and the An oil return pipe that connects the refrigerant suction side of the compressor and returns the refrigerating machine oil collected in the lower part of the outer shell to the compressor, and the outlet pipe has a leading end of the outlet pipe in the outer shell, The inside of the outer shell is installed vertically upward, and the leading end of the introduction pipe in the outer shell So as to be positioned Rimoue, it is fixed to the outer shell.
　本発明によれば、圧縮機マフラーは、導入管を外殻の上側に固定し、導出管を外殻の下側に固定し、導出管先端部を導入管先端部より上側に配置することにより、導入管及び導出管を外殻に隅肉溶接するためのスペースを確保することができ、これにより冷媒脈動を緩和性能を確保しつつ、炉中ロウ付け工程を廃止することができ、製作コストを抑制し、安価に製作可能な圧縮機マフラーが得られる。 According to the present invention, the compressor muffler fixes the introduction pipe to the upper side of the outer shell, fixes the outlet pipe to the lower side of the outer shell, and arranges the leading end of the outlet pipe above the leading end of the inlet pipe. It is possible to secure a space for the fillet welding of the introduction pipe and the lead-out pipe to the outer shell, thereby eliminating the brazing process in the furnace while ensuring the performance of reducing the refrigerant pulsation, and the production cost A compressor muffler that can be manufactured at low cost can be obtained.
本発明の実施の形態１に係る冷凍サイクルの冷媒回路を示す概略構成図である。It is a schematic block diagram which shows the refrigerant circuit of the refrigerating cycle which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る圧縮機及び圧縮機マフラーの構造を示す側面図である。It is a side view which shows the structure of the compressor which concerns on Embodiment 1 of this invention, and a compressor muffler. 従来技術における圧縮機マフラー５の構造を示した説明図である。It is explanatory drawing which showed the structure of the compressor muffler 5 in a prior art. 本発明の実施の形態１に係る圧縮機マフラーの構造を示す説明図である。It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る圧縮機マフラーの構造を示す説明図である。It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る圧縮機マフラーの構造を示す説明図である。It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 3 of this invention. 本発明の実施の形態４に係る圧縮機マフラーの構造を示す説明図である。It is explanatory drawing which shows the structure of the compressor muffler which concerns on Embodiment 4 of this invention.
　実施の形態１．
　図１は、本発明の実施の形態１に係る冷凍サイクルの冷媒回路を示す概略構成図である。冷媒回路は、圧縮機１と、圧縮機マフラー５と、高圧側熱交換器２と、絞り装置３と、低圧側熱交換器４とを冷媒配管によって接続したものである。冷媒回路中の冷媒は、以下のように循環する。圧縮機１で低圧の冷媒ガスを圧縮し高圧の冷媒ガスを吐出する。吐出された冷媒は、圧縮機側吐出管７、マフラー側流入管７ａを経て、圧縮機マフラー５に入り、冷媒と冷凍機油とが分離される。なお、分離された冷凍機油は、返油管９から圧縮機１の吸入側に戻される。その後、高温高圧のガス冷媒は、高圧側熱交換器２に入る。高圧側熱交換器２にて、高温高圧のガス冷媒は、放熱し、液状態へ状態変化する。高圧側熱交換器２にて液体となった冷媒は、絞り装置３にて膨張させられ圧力が低下する。絞り装置３を出た冷媒は、低圧側熱交換器４にて吸熱し、再びガス状態へ状態変化する。ガス状態の冷媒は、吸入管６を経て圧縮機１に入り、再び冷媒回路内を循環する。 Embodiment 1 FIG.
FIG. 1 is a schematic configuration diagram showing a refrigerant circuit of a refrigeration cycle according to Embodiment 1 of the present invention. The refrigerant circuit is obtained by connecting the compressor 1, the compressor muffler 5, the high-pressure side heat exchanger 2, the expansion device 3, and the low-pressure side heat exchanger 4 by refrigerant piping. The refrigerant in the refrigerant circuit circulates as follows. The compressor 1 compresses the low-pressure refrigerant gas and discharges the high-pressure refrigerant gas. The discharged refrigerant passes through the compressor side discharge pipe 7 and the muffler side inflow pipe 7a and enters the compressor muffler 5 to separate the refrigerant and the refrigeration oil. The separated refrigerating machine oil is returned from the oil return pipe 9 to the suction side of the compressor 1. Thereafter, the high-temperature and high-pressure gas refrigerant enters the high-pressure side heat exchanger 2. In the high-pressure side heat exchanger 2, the high-temperature and high-pressure gas refrigerant dissipates heat and changes its state to a liquid state. The refrigerant that has become liquid in the high-pressure side heat exchanger 2 is expanded by the expansion device 3 and the pressure is reduced. The refrigerant exiting the expansion device 3 absorbs heat in the low-pressure side heat exchanger 4 and changes to a gas state again. The refrigerant in the gas state enters the compressor 1 through the suction pipe 6 and circulates again in the refrigerant circuit.
　図２は、本発明の実施の形態１に係る圧縮機１及び圧縮機マフラー５の構造を示す側面図である。圧縮機１から吐出された直後に冷媒が圧縮機マフラー５へ流れるよう、圧縮機マフラー５は圧縮機１の側面に併設されている。圧縮機１で圧縮された高温高圧冷媒は、圧縮機側吐出管７からマフラー側流入管７ａを経て圧縮機マフラー５の内部に流入する。これにより、圧縮機１から吐出直後の冷媒の脈動による冷媒回路への影響を最小限に抑える。また、圧縮機マフラー５は、冷媒中の冷凍機油を分離する機能も有している。冷凍機油を分離された冷媒は、マフラー側吐出管８を通り高圧側熱交換器２へ送られる。冷凍機油は、圧縮機マフラー５の底に溜まり、返油管９を経て吸入管６から圧縮機１へ戻される。 FIG. 2 is a side view showing the structure of the compressor 1 and the compressor muffler 5 according to Embodiment 1 of the present invention. The compressor muffler 5 is provided on the side surface of the compressor 1 so that the refrigerant flows to the compressor muffler 5 immediately after being discharged from the compressor 1. The high-temperature and high-pressure refrigerant compressed by the compressor 1 flows from the compressor-side discharge pipe 7 into the compressor muffler 5 through the muffler-side inflow pipe 7a. Thereby, the influence on the refrigerant circuit due to the pulsation of the refrigerant immediately after being discharged from the compressor 1 is minimized. The compressor muffler 5 also has a function of separating refrigeration oil in the refrigerant. The refrigerant from which the refrigeration oil is separated passes through the muffler side discharge pipe 8 and is sent to the high pressure side heat exchanger 2. The refrigerating machine oil accumulates at the bottom of the compressor muffler 5 and returns to the compressor 1 from the suction pipe 6 through the oil return pipe 9.
　ここで、本発明が解決する課題を明確にするために従来技術における圧縮機マフラー５０について説明する。 Here, in order to clarify the problem to be solved by the present invention, the compressor muffler 50 in the prior art will be described.
　図３は、従来技術における圧縮機マフラー５０の構造を示した説明図である。圧縮機マフラー５０の外殻２６には、炉中ロウ付けにより導出管２１及び導入管２２がロウ付けされている構造になっている。 FIG. 3 is an explanatory view showing the structure of the compressor muffler 50 in the prior art. The outer shell 26 of the compressor muffler 50 has a structure in which the outlet pipe 21 and the inlet pipe 22 are brazed by brazing in the furnace.
　図３に示される従来技術の圧縮機マフラー５における導出管１１及び導入管１２の配置での隅肉溶接を行う場合には、上側シェル１３に固定されている導出管１１と導入管１２との間隔が確保できず、隅肉溶接をするのが困難である。導出管１１と導入管１２との間隔を確保するには、上側シェル１３の大型化ひいては圧縮機マフラー５全体の大型化が必要となる。また、導入管１２を上側シェル１３の側面から挿入する構造により、導出管１１と導入管１２との間隔を確保することも考えられるが、導入管１２を挿入する穴を側面に設けるためには、穴をあける工程が必要となり、コスト増の原因となる。また、側面に配管を接続すると、圧縮機マフラー５と配管とにより占めるスペースが増加する懸念もある。 When performing fillet welding in the arrangement of the outlet pipe 11 and the inlet pipe 12 in the compressor muffler 5 of the prior art shown in FIG. 3, the outlet pipe 11 and the inlet pipe 12 fixed to the upper shell 13 are connected. The interval cannot be secured and it is difficult to perform fillet welding. In order to secure the space between the lead-out pipe 11 and the introduction pipe 12, it is necessary to increase the size of the upper shell 13 and thus the size of the entire compressor muffler 5. In addition, it is conceivable to secure a space between the lead-out pipe 11 and the introduction pipe 12 by a structure in which the introduction pipe 12 is inserted from the side surface of the upper shell 13, but in order to provide a hole for inserting the introduction pipe 12 in the side face. , A process of drilling holes is required, which causes an increase in cost. Moreover, when piping is connected to the side surface, there is a concern that the space occupied by the compressor muffler 5 and piping increases.
　ロウ付けは、複雑な形状の部品間を接合することができ、冷媒回路のように気密性を必要とする配管の接合などに用いられる。ロウ付けは、複雑な形状に対応でき、気密性を確保できるという利点があるが、圧縮機マフラー５のシェルのような肉厚が大きいものに対しロウ付けする場合、一般的なロウ付けでは、炙る際に熱量が足らず、部材を熱しきれずロウが奥まで溶け込まない場合があるため「炉中ロウ付け」という特殊なロウ付け方法をとる。この「炉中ロウ付け」は、肉厚の大きい部材を炉の中で時間をかけて熱し部材全体を暖め、ロウを奥まで溶け込みやすくしている。そのため、特殊な設備と時間が必要となり、その結果圧縮機マフラー５の製造コストが高くなる。 Brazing can be used for joining parts having complicated shapes and joining pipes that require airtightness such as a refrigerant circuit. Brazing has the advantage of being able to cope with complex shapes and ensuring airtightness. However, when brazing to a thick wall like the shell of the compressor muffler 5, in general brazing, A special brazing method called “brazing in the furnace” is used because there is a case where the amount of heat is insufficient when rolling, the member cannot be heated completely, and the braze may not melt. In this “furnace brazing”, a thick member is heated in the furnace over time to warm the whole member, so that the solder is easily melted into the back. Therefore, special equipment and time are required, and as a result, the manufacturing cost of the compressor muffler 5 increases.
　上記の従来技術の課題を踏まえて、本実施の形態においては、圧縮機マフラー５の導入管１２及び導出管１１のロウ付け工程を廃止できるような構造とした。
　図４は、本発明の実施の形態１に係る圧縮機マフラーの構造を示す説明図である。本実施の形態においては、従来技術において加工コストの高い導出管１１及び導入管１２の炉中ロウ付けを廃止し、安価に加工できる隅肉溶接に変更しているものである。 In view of the above-mentioned problems of the prior art, in this embodiment, the structure is such that the brazing process of the introduction pipe 12 and the outlet pipe 11 of the compressor muffler 5 can be eliminated.
FIG. 4 is an explanatory diagram showing the structure of the compressor muffler according to the first embodiment of the present invention. In the present embodiment, brazing in the furnace of the lead-out pipe 11 and the introduction pipe 12, which have a high processing cost, is abolished in the prior art and is changed to fillet welding that can be processed at low cost.
　本実施の形態においては、圧縮機マフラー５の大型化を回避するため、上側シェル１３に固定されていた導出管１１及び導入管１２のうち、導出管１１を下側シェル１５へ移動し、導出管１１及び導入管１２を離して固定する。 In the present embodiment, in order to avoid an increase in the size of the compressor muffler 5, out of the outlet pipe 11 and the inlet pipe 12 that are fixed to the upper shell 13, the outlet pipe 11 is moved to the lower shell 15, The tube 11 and the introduction tube 12 are separated and fixed.
　本実施の形態に係る外殻１６は、例えば、３つの部品からなる構成としている。外殻１６は、上側シェル１３、中間シェル１４、下側シェル１５により構成されている。外殻１６は密閉された空間を構成し、その拡大した容積により圧縮機１から吐出された冷媒の脈動を緩和する。マフラー側流入管７ａは、上側シェル１３に固定された導入管１２と接続し、導入管１２は、圧縮機マフラー５の内側で導入管先端部１０と接続している。導入管先端部１０は、外殻１６内のほぼ内周方向を指向するように水平方向に曲げて配置されている。つまり、導入管先端部１０は圧縮機マフラー５の内部の円筒形状に沿う形となっている。圧縮冷媒は、導入管先端部１０から圧縮機マフラー５の内部の円筒面の円周方向に沿った方向に吐出される。外殻１６内に流入した圧縮冷媒は、外殻１６の内周面に沿って回転運動を行いながら重力により降下することで、螺旋状に旋回降下する。このとき、遠心力を受けた圧縮冷媒中の霧状の冷凍機油は冷媒と比較して比重が重いために、外殻１６の内周面に衝突し付着して液粒化するというサイクロン効果が発生する。これにより、圧縮ガス中に含まれていた霧状の冷凍機油は次第に冷媒から分離する。遠心力により分離された冷凍機油は、外殻１６内の壁側に集まり下へ落ち、圧縮機マフラー５の底に溜まる。高温高圧の気体冷媒は、導出管１１を通りマフラー側吐出管８から高圧側熱交換器２へ導かれる構造となっている。 The outer shell 16 according to the present embodiment has, for example, a configuration including three parts. The outer shell 16 includes an upper shell 13, an intermediate shell 14, and a lower shell 15. The outer shell 16 constitutes a sealed space, and relieves pulsation of the refrigerant discharged from the compressor 1 due to its enlarged volume. The muffler side inflow pipe 7 a is connected to an introduction pipe 12 fixed to the upper shell 13, and the introduction pipe 12 is connected to the introduction pipe tip 10 inside the compressor muffler 5. The introduction pipe distal end portion 10 is arranged by being bent in the horizontal direction so as to be directed substantially in the inner circumferential direction in the outer shell 16. In other words, the inlet tube tip 10 has a shape along the cylindrical shape inside the compressor muffler 5. The compressed refrigerant is discharged from the inlet tube tip 10 in a direction along the circumferential direction of the cylindrical surface inside the compressor muffler 5. The compressed refrigerant that has flowed into the outer shell 16 descends due to gravity while rotating along the inner peripheral surface of the outer shell 16, so that the compressed refrigerant swirls and spirals down. At this time, since the refrigerated refrigeration oil in the compressed refrigerant subjected to the centrifugal force has a higher specific gravity than the refrigerant, the cyclone effect of colliding with and adhering to the inner peripheral surface of the outer shell 16 is formed. appear. Thereby, the mist refrigerating machine oil contained in the compressed gas is gradually separated from the refrigerant. The refrigerating machine oil separated by the centrifugal force gathers on the wall side in the outer shell 16 and falls down and accumulates at the bottom of the compressor muffler 5. The high-temperature and high-pressure gas refrigerant passes through the outlet pipe 11 and is guided from the muffler-side discharge pipe 8 to the high-pressure side heat exchanger 2.
　本実施の形態においては、円筒形の上側シェル１３の中心に上面側から導入管１２が貫通挿入され、隅肉溶接にて溶接されている。円筒形の下側シェル１５の中心に下側から導出管１１が貫通挿入され、隅肉溶接にて溶接されている。また、下側シェル１５の外周上に返油管台９ａが隅肉溶接にて溶接されている。導入管１２の外殻１６内部側の端には、導入管先端部１０を銀ロウ付けする。導出管１１のシェル内側の端には、導出管先端部１１ａを銀ロウ付けする。この時、圧縮機マフラー５に冷凍機油分離の機能を持たせるため、導出管先端部１１ａの先端（本発明の「導出管先端部」に相当する。）は、導入管先端部１０の先端（本発明の「導入管先端部」に相当する。）より高い所に位置させる。そして、導入管１２にマフラー側流入管７ａを、導出管１１にマフラー側吐出管８を、返油管台９ａに返油管９を、それぞれ銀ロウ付けする。 In this embodiment, the introduction pipe 12 is inserted through the center of the cylindrical upper shell 13 from the upper surface side and welded by fillet welding. A lead-out pipe 11 is inserted through the center of the cylindrical lower shell 15 from below and welded by fillet welding. Further, the oil return nozzle base 9a is welded to the outer periphery of the lower shell 15 by fillet welding. The inlet pipe tip 10 is brazed to the inner end of the outer pipe 16 of the inlet pipe 12. A lead-out tube tip 11a is brazed to the end of the lead-out tube 11 inside the shell. At this time, in order to give the compressor muffler 5 the function of separating the refrigerating machine oil, the tip of the outlet pipe tip 11a (corresponding to the “leader pipe tip” of the present invention) is the tip of the inlet pipe tip 10 ( It corresponds to the “leading tube tip” of the present invention). Then, the muffler side inflow pipe 7a is brazed to the introduction pipe 12, the muffler side discharge pipe 8 to the outlet pipe 11, and the oil return pipe 9 to the oil return pipe base 9a.
　なお、本実施の形態において、導入管先端部１０は、導入管１２と銀ロウ付けして接続する構造と説明されているが、導入管先端部１０と導入管１２とは一体に成形されたものでもよい。または、上側シェル１３に導入管１２を固定する前に導入管先端部１０と導入管１２とを接続してもよい。また、導出管先端部１１ａは、導出管１１と銀ロウ付けして接続する構造と説明されているが、導出管先端部１１ａと導出管１１とは一体に成形されたものでもよい。または、下側シェル１５に導出管１１を固定する前に導出管先端部１１ａと導出管１１とを接続してもよい。 In the present embodiment, the introduction tube tip 10 is described as being connected to the introduction tube 12 by silver brazing, but the introduction tube tip 10 and the introduction tube 12 are integrally formed. It may be a thing. Alternatively, the inlet tube tip 10 and the inlet tube 12 may be connected before the inlet tube 12 is fixed to the upper shell 13. Further, the lead-out tube tip portion 11a is described as being connected to the lead-out tube 11 by silver brazing, but the lead-out tube tip portion 11a and the lead-out tube 11 may be integrally formed. Alternatively, the lead-out pipe tip 11 a and the lead-out pipe 11 may be connected before the lead-out pipe 11 is fixed to the lower shell 15.
　また、本実施の形態において、外殻１６の外周部に返油管台９ａを設けているが、下側シェル１５の下面から挿入するように返油管台９ａを固定してもよい。 Further, in the present embodiment, the oil return nozzle 9a is provided on the outer peripheral portion of the outer shell 16, but the oil return nozzle 9a may be fixed so as to be inserted from the lower surface of the lower shell 15.
　本実施の形態においては、従来技術と異なり、導出管１１を下側シェル１５の円筒の中心に配置し、導入管１２を外殻１６の上部の円筒の中心に配置している。導入管先端部１０は、従来技術と同様にサイクロン効果により冷凍機油を分離できるように配置されている。導出管先端部１１ａの先端を導入管先端部１０の先端よりも上に位置させているのは、導入管先端部１０から流入した冷媒が冷凍機油を含んだまま上に向いた直接導出管先端部１１ａに入るのを抑制するためであることと、また、外殻１６の内部を旋回した冷媒が分離された冷凍機油を再び巻き上げて導出管１１に入るのを抑制するためである。
　なお、導入管１２は、冷凍機油を分離できるように外殻１６の内部で冷媒を旋回させるように吐出できるのであれば、外殻１６の上部の円筒の中心に配置しなくともよい。 In the present embodiment, unlike the prior art, the lead-out pipe 11 is arranged at the center of the cylinder of the lower shell 15, and the introduction pipe 12 is arranged at the center of the cylinder above the outer shell 16. The inlet tube tip 10 is arranged so that the refrigerating machine oil can be separated by the cyclone effect as in the prior art. The leading end of the lead-out pipe tip 11a is positioned above the tip of the lead-in pipe tip 10 because the refrigerant flowing from the lead-in pipe tip 10 faces upward while containing the refrigeration oil. This is for suppressing entry into the portion 11a and for preventing refrigerating machine oil that has separated the refrigerant swirling inside the outer shell 16 from rewinding and entering the outlet pipe 11.
The introduction pipe 12 may not be arranged at the center of the upper cylinder of the outer shell 16 as long as the refrigerant can be discharged so as to swirl the refrigerant inside the outer shell 16 so that the refrigerating machine oil can be separated.
　［実施の形態１による効果］
　以上のように、本実施の形態の圧縮機マフラー５は、導入管１２を上側シェル１３に固定し、導出管１１を下側シェル１５に固定することにより導入管１２及び導出管１１の周りにスペースを確保できる。これにより、導入管１２及び導出管１１は外殻１６に隅肉溶接をすることができる。また、本実施の形態の圧縮機マフラー５は、外殻１６内で鉛直方向上向きに設置された導出管先端部１１ａの先端を導入管先端部１０の先端より上側に配置することにより、冷凍機油が混合した冷媒を流出させることがなく、冷凍機油を冷媒から分離する機能と冷媒脈動を緩和性能とを確保できる。以上の構成により、従来の機能を確保しつつ、製作時の炉中ロウ付け工程を廃止することができ、ひいては製作コストを抑制し、安価に製作可能な圧縮機マフラー５が得られる。 [Effects of Embodiment 1]
As described above, in the compressor muffler 5 of the present embodiment, the introduction pipe 12 is fixed to the upper shell 13, and the outlet pipe 11 is fixed to the lower shell 15 so that the inlet pipe 12 and the outlet pipe 11 are surrounded. Space can be secured. Thereby, the inlet pipe 12 and the outlet pipe 11 can be fillet welded to the outer shell 16. Further, the compressor muffler 5 of the present embodiment arranges the tip of the outlet tube tip 11a installed vertically upward in the outer shell 16 above the tip of the inlet tube tip 10 so that the refrigerator oil As a result, the function of separating the refrigerating machine oil from the refrigerant and the ability to reduce the refrigerant pulsation can be secured. With the above configuration, the in-furnace brazing process at the time of manufacture can be abolished while ensuring the conventional functions, and the compressor muffler 5 that can be manufactured at low cost can be obtained.
　実施の形態２．
　図５は、本発明の実施の形態２に係る圧縮機マフラー５ａの構造を示す説明図である。本実施の形態に係る圧縮機マフラー５ａは、実施の形態１における圧縮機マフラー５の外殻１６を上側シェル１３、下側シェル１５の２部品から構成するように変更したものである。 Embodiment 2. FIG.
FIG. 5 is an explanatory view showing the structure of a compressor muffler 5a according to Embodiment 2 of the present invention. The compressor muffler 5a according to the present embodiment is modified such that the outer shell 16 of the compressor muffler 5 according to the first embodiment is composed of two parts, an upper shell 13 and a lower shell 15.
　［実施の形態２による効果］
　以上のように、実施の形態１における中間シェル１４を廃止することで、外殻１６ａの部品点数及び円周溶接個所を減少させることができる。また、上側シェル１３及び下側シェル１５において中間シェル１４を溶接するために必要だった溶接部の複雑な形状を廃止することができる。上側シェル１３ａ及び下側シェル１５ａは、単純な形状にできたため、深絞りなどの鍛造による成形も可能となり、歩留まりを改善することができ、実施の形態１よりもさらにコストを低減することが可能となる。 [Effects of Embodiment 2]
As described above, by eliminating the intermediate shell 14 in the first embodiment, it is possible to reduce the number of parts of the outer shell 16a and the circumferential welding locations. Moreover, the complicated shape of the welding part required in order to weld the intermediate | middle shell 14 in the upper shell 13 and the lower shell 15 can be abolished. Since the upper shell 13a and the lower shell 15a have a simple shape, it is possible to form by deep forging or the like, improve the yield, and further reduce the cost compared to the first embodiment. It becomes.
　実施の形態３．
　図６は、本発明の実施の形態３に係る圧縮機マフラー５ｂの構造を示す説明図である。本実施の形態に係る圧縮機マフラー５ｂは、実施の形態１に係る圧縮機マフラー５ａに対し、導入管１２及び導出管１１を外殻１６ｂを構成する部品と一体に設けたものである。外殻１６ｂの構成は３つの部品からなり、上側シェル１３ｂ及び下側シェル１５ｂにおいて導入管１２及び導出管１１に相当する部分を一体で成形及び加工する。上側シェル１３及び下側シェル１５は、鍛造加工若しくは切削加工、又はそれらの両方により成形、加工される。図６に示された上側シェル１３ｂ及び下側シェル１５ｂのように、円筒形状の中心に導入管１２及び導出管１１に相当する部分を設けたような形状であれば、外周部及び内周部と同時に導入管１２及び導出管１１に相当する部分を加工又は成型することも可能である。 Embodiment 3 FIG.
FIG. 6 is an explanatory diagram showing the structure of the compressor muffler 5b according to Embodiment 3 of the present invention. The compressor muffler 5b according to the present embodiment is a compressor muffler 5a according to the first embodiment in which an introduction pipe 12 and a lead-out pipe 11 are provided integrally with components constituting the outer shell 16b. The configuration of the outer shell 16b is composed of three parts, and the upper shell 13b and the lower shell 15b are integrally formed and processed at portions corresponding to the introduction pipe 12 and the outlet pipe 11. The upper shell 13 and the lower shell 15 are formed and processed by forging or cutting, or both. As long as the upper shell 13b and the lower shell 15b shown in FIG. 6 have a shape corresponding to the introduction pipe 12 and the outlet pipe 11 provided at the center of the cylindrical shape, the outer peripheral portion and the inner peripheral portion. At the same time, portions corresponding to the introduction pipe 12 and the lead-out pipe 11 can be processed or molded.
　［実施の形態３による効果］
　以上のように、上側シェル１３に導入管１２部分を一体成形し、下側シェル１５に導出管１１部分を一体成形することにより、導入管１２及び導出管１１を固定する際に実施していた炉中ロウ付け等を廃止することができる。これにより、実施の形態１、実施の形態２に比べ、部品点数及びロウ付け等の箇所を減少させることができ、コスト低減が可能となる。 [Effects of Embodiment 3]
As described above, the introduction pipe 12 portion is integrally formed with the upper shell 13 and the lead-out pipe 11 portion is integrally formed with the lower shell 15 to fix the introduction pipe 12 and the lead-out pipe 11. Brazing in the furnace can be abolished. Thereby, compared with Embodiment 1 and Embodiment 2, locations, such as a number of parts and brazing, can be reduced and cost reduction is attained.
　実施の形態４．
　図７は、本発明の実施の形態４における圧縮機マフラー５ｃを示す。実施の形態３に係る圧縮機マフラー５に対し、外殻１６ｃを上側シェル１３ｃ、下側シェル１５ｃの２部品から構成する。 Embodiment 4 FIG.
FIG. 7 shows a compressor muffler 5c according to the fourth embodiment of the present invention. For the compressor muffler 5 according to Embodiment 3, the outer shell 16c is composed of two parts, an upper shell 13c and a lower shell 15c.
　［実施の形態４による効果］
　以上のように、中間シェル１４を廃止することで、部品点数及び溶接箇所を減少させることができる。また、上側シェル１３及び下側シェル１５において中間シェル１４を溶接するために必要だった溶接部の複雑な形状を廃止することができる。それにより深絞りなどの鍛造により上側シェル１３及び下側シェル１５を成形することも可能となり、製造時の歩留まりを改善することができる。実施の形態３に係る圧縮機マフラー５に対しさらにコストを低減することが可能となる。 [Effects of Embodiment 4]
As described above, by eliminating the intermediate shell 14, it is possible to reduce the number of parts and the number of welding points. Moreover, the complicated shape of the welding part required in order to weld the intermediate | middle shell 14 in the upper shell 13 and the lower shell 15 can be abolished. Accordingly, the upper shell 13 and the lower shell 15 can be formed by forging such as deep drawing, and the yield during manufacturing can be improved. The cost can be further reduced with respect to the compressor muffler 5 according to the third embodiment.
　１　圧縮機、２　高圧側熱交換器、３　絞り装置、４　低圧側熱交換器、５　圧縮機マフラー、５ａ　圧縮機マフラー、５ｂ　圧縮機マフラー、５ｃ　圧縮機マフラー、６　吸入管、７　圧縮機側吐出管、７a　マフラー側流入管、８　マフラー側吐出管、９　返油管、９ａ　返油管台、１０　導入管先端部、１１　導出管、１１ａ　導出管先端部、１２　導入管、１３　上側シェル、１３ａ　上側シェル、１３ｂ　上側シェル、１３ｃ　上側シェル、１４　中間シェル、１５　下側シェル、１５ａ　下側シェル、１５ｂ　下側シェル、１５ｃ　下側シェル、１６　外殻、１６ａ　外殻、１６ｂ　外殻、１６ｃ　外殻、２０　導入管先端部、２１　導出管、２２　導入管、２３　上側シェル、２４　中間シェル、２５　下側シェル、２６　外殻、２７ａ　マフラー側流入管、２８　マフラー側吐出管、２９　返油管、５０　圧縮機マフラー。 1 compressor, 2 high pressure side heat exchanger, 3 expansion device, 4 low pressure side heat exchanger, 5 compressor muffler, 5a compressor muffler, 5b compressor muffler, 5c compressor muffler, 6 suction pipe, 7 compressor side Discharge pipe, 7a muffler side inflow pipe, 8 muffler side discharge pipe, 9 oil return pipe, 9a oil return pipe stand, 10 introduction pipe tip, 11 lead pipe, 11a lead pipe tip, 12 introduction pipe, 13 upper shell, 13a top Shell, 13b upper shell, 13c upper shell, 14 middle shell, 15 lower shell, 15a lower shell, 15b lower shell, 15c lower shell, 16 outer shell, 16a outer shell, 16b outer shell, 16c outer shell, 20 Lead pipe tip, 21 Lead pipe, 22 Lead pipe, 23 Upper shell, 24 Intermediate shell, 25 Lower shell, 26 Outside Shell, 27a muffler side inflow pipe, 28 muffler side discharge pipe, 29 oil return pipe, 50 compressor muffler.

Claims (6)

  1. 　圧縮機、高圧側熱交換器、絞り装置、及び低圧側熱交換器を順次接続して成る冷媒回路の前記圧縮機の冷媒吐出側に配備され、
    　前記圧縮機から吐出された冷媒の脈動を緩和する空間を形成する外殻を備え、冷媒から分離した冷凍機油を該外殻の下部に溜める圧縮機マフラーにおいて、
    　該外殻の上面側に挿入され、前記圧縮機の冷媒吐出側と接続される導入管と、
    　該外殻の下面側に挿入され、前記高圧側熱交換器の冷媒吸入側と接続される導出管と、
    　前記外殻の内部の下部と前記圧縮機の冷媒吸入側とを連結し、前記外殻の下部に溜まる前記冷凍機油を前記圧縮機へ戻す返油管と、を備え、
    　前記導出管は、
    　前記外殻内の導出管先端部が、前記外殻内を鉛直方向に上向きに設置され、前記外殻内の導入管先端部よりも上に位置するように、前記外殻に固定される、圧縮機マフラー。     A compressor, a high-pressure side heat exchanger, a throttling device, and a low-pressure side heat exchanger that are sequentially connected to the refrigerant discharge side of the compressor of the refrigerant circuit,
    In a compressor muffler that includes an outer shell that forms a space that relaxes pulsation of refrigerant discharged from the compressor, and that stores refrigerating machine oil separated from the refrigerant in a lower portion of the outer shell,
    An introduction pipe inserted into the upper surface side of the outer shell and connected to the refrigerant discharge side of the compressor;
    An outlet pipe inserted into the lower surface side of the outer shell and connected to the refrigerant suction side of the high pressure side heat exchanger;
    An oil return pipe that connects the lower part inside the outer shell and the refrigerant suction side of the compressor and returns the refrigerating machine oil accumulated in the lower part of the outer shell to the compressor;
    The outlet tube is
    The leading end of the outlet pipe in the outer shell is installed vertically upward in the outer shell, and is fixed to the outer shell so as to be positioned above the leading end of the introducing pipe in the outer shell. Compressor muffler.
  2. 　前記導入管は、
    　前記外殻の内部に位置する前記導入管先端部が、水平かつ前記外殻の内周面に対して傾斜した方向に冷媒が吐出するように、前記外殻に固定される、請求項１に記載の圧縮機マフラー。     The introduction pipe is
    The tip of the introduction pipe located inside the outer shell is fixed to the outer shell such that the refrigerant is discharged in a direction that is horizontal and inclined with respect to the inner peripheral surface of the outer shell. The compressor muffler described.
  3. 　前記外殻は、
    　該外殻の上部を構成する上側シェル部品と、
    　該外殻の下部を構成する下側シェル部品と、を備える、請求項１又は２に記載の圧縮機マフラー。     The outer shell is
    An upper shell part constituting the upper part of the outer shell;
    The compressor muffler according to claim 1, further comprising: a lower shell component that constitutes a lower portion of the outer shell.
  4. 　前記導入管は、
    　前記外殻の上面側に溶接により固定され、
    　前記導出管は、
    　前記外殻の下面側に溶接により固定される、請求項１又は２に記載の圧縮機マフラー。     The introduction pipe is
    Fixed to the upper surface side of the outer shell by welding,
    The outlet tube is
    The compressor muffler according to claim 1 or 2, which is fixed to the lower surface side of the outer shell by welding.
  5. 　前記導入管は、
    　切削加工により前記外殻と一体に成形され、
    　前記導出管及び前記返油管は、
    　切削加工により前記外殻と一体に成形される、請求項１又は２に記載の圧縮機マフラー。     The introduction pipe is
    Molded integrally with the outer shell by cutting,
    The outlet pipe and the oil return pipe are
    The compressor muffler according to claim 1 or 2, wherein the compressor muffler is formed integrally with the outer shell by cutting.
  6. 　前記導入管は、
    　鍛造加工により前記外殻と一体に成形され、
    　前記導出管及び前記返油管は、
    　鍛造加工により前記外殻と一体に成形される、請求項１又は２に記載の圧縮機マフラー。     The introduction pipe is
    Formed integrally with the outer shell by forging,
    The outlet pipe and the oil return pipe are
    The compressor muffler according to claim 1, wherein the compressor muffler is integrally formed with the outer shell by forging.
PCT/JP2015/063945 2015-05-14 2015-05-14 Compressor muffler WO2016181558A1 (en)

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