CN205013244U - Compressor - Google Patents

Abstract

The utility model provides a manufacturing cost increase is enough restrained and the compressor that the reliability reduces can be restrained. Compressor possesses: sealed container, the compression unit, it sets up in sealed container and to refrigerant compress, and the motor unit, it sets up in sealed container and drive compression unit, compressor's characterized in that, compressor possesses: conjugation tube made of iron, its party and sealed container are connected, suction connection made of iron, it inserts in the conjugation tube, and party and compression unit connection, and the pipe sucks, and its party and the another party of suction connection are connected, and the suction connection has annular first protruding portion, and this first protruding portion is formed at another party's tip to from the play of interior all side direction periphery pleurapophysis, suction connection and conjugation tube constitution are: the first protruding portion of suction connection and the another party's of conjugation tube tip joint.

Description

Compressor

Technical field

The utility model relates to compressor.

Background technique

In existing compressor, propose there is following compressor, this compressor has: suction connection, and one end of this suction connection is connected with the cylinder body of compressing mechanism; Conjugation tube, this conjugation tube is connected with seal container, and inserts for suction connection; And suction pipe, the other end of suction connection is connected with this suction pipe (such as with reference to patent documentation 1).In the compressor described in patent documentation 1, conjugation tube is made up of copper, and suction connection and conjugation tube are fixed by soldering.

In addition, in existing compressor, propose there is following compressor, this compressor has: suction connection, and this suction connection is connected with the cylinder body of compressing mechanism; And seal container, this seal container is formed with the opening portion inserted for suction connection, and suction connection engages with this opening portion (such as with reference to patent documentation 2).Compressor described in patent documentation 2 is formed from the inner peripheral surface side flange outstanding to outer circumferential face side at the outer circumferential face of suction connection.And the flange of suction connection is engaged by projection welding (resistance welding) with the forming section of the opening portion in seal container.

Patent documentation 1: Japanese Unexamined Patent Publication 11-182434 publication (such as with reference to Fig. 1)

Patent documentation 2: Japanese Patent Publication 7-117043 publication (such as with reference to Fig. 1)

The suction connection of the compressor described in patent documentation 1 is engaged by gas brazing with conjugation tube.When implementing gas brazing, consider efficiency aspect, quality aspect etc., the joining portion of suction connection and conjugation tube uses copper product.Therefore, such as, need to carry out copper plating treatment to the end as anastomosis part of suction connection or engage copper pipe arrangement in advance in the end of suction connection, correspondingly, the problem that the manufacture cost that there is compressor increases.

In addition, the compressor described in patent documentation 2 arranges electrode in the forming position of flange and implements resistance welding.That is, electrode is pressed on flanged lip and implements resistance welding by limit, and therefore, flange and seal container press mutually.Therefore, because flange and seal container press mutually, there is the possibility causing the distortion of seal container.In addition, because the suction connection being formed with flange is connected with compression unit, therefore there is the possibility also producing distortion because flange is pressed at compression unit.Like this, compressor described in patent documentation 2 exists and produces seal container and the distortion of compression unit and the problem of reliability decrease.

Model utility content

The utility model proposes to solve above such problem, and its object is to provides a kind of manufacture cost that can suppress increase and can suppress the compressor that reliability reduces.

Compressor involved by the technical solution of the utility model 1 possesses: seal container; Compression unit, above-mentioned compression unit is arranged in seal container, compresses refrigeration agent; And motor unit, above-mentioned motor unit is arranged in seal container, and drives compression unit, and the feature of above-mentioned compressor is, above-mentioned compressor possesses: conjugation tube made of iron, and a side of above-mentioned conjugation tube is connected with seal container; Suction connection made of iron, above-mentioned suction connection is inserted in conjugation tube, and a side is connected with compression unit; And suction pipe, one side of above-mentioned suction pipe is connected with the opposing party of suction connection, suction connection has the first protuberance of ring-type, above-mentioned first protuberance is formed at the end of the opposing party of suction connection, and give prominence to outer peripheral side from inner circumferential side, suction connection and conjugation tube are configured to: the engaged at end of the first protuberance of suction connection and the opposing party of conjugation tube.

The feature of the compressor involved by technological scheme 2 is, in the compressor described in technological scheme 1, above-mentioned suction connection and above-mentioned conjugation tube are configured to: the end of above-mentioned first protuberance of above-mentioned suction connection and the opposing party of above-mentioned conjugation tube is implemented resistance welding and is formed with the first weld part.

The feature of the compressor involved by technological scheme 3 is, in the compressor described in technological scheme 2, above-mentioned first protuberance has conical surface portion, above-mentioned conical surface portion is formed as along with the side side from above-mentioned suction connection tends to the opposing party side and enlarged outside diameter, above-mentioned conjugation tube has the internal diameter bight of ring-type at the inner peripheral surface of the end of the opposing party, above-mentioned conical surface portion is pressed against above-mentioned internal diameter bight, and above-mentioned first weld part is at least formed at the surface of contact in above-mentioned internal diameter bight and above-mentioned conical surface portion.

The feature of the compressor involved by technological scheme 4 is, in compressor described any one of technological scheme 1 ~ 3, above-mentioned engaged tubular becomes along with the side side from above-mentioned conjugation tube tends to the opposing party side and enlarged outside diameter.

The feature of the compressor involved by technological scheme 5 is, in the compressor described in technological scheme 2, above-mentioned conjugation tube has the second protuberance, above-mentioned second protuberance is formed at the end of the opposing party of above-mentioned conjugation tube, give prominence to outer peripheral side from inner circumferential side, and be arranged at and compare the position of above-mentioned first protuberance by above-mentioned compression unit side, above-mentioned first protuberance is arranged opposedly with above-mentioned second protuberance, and above-mentioned first weld part is at least formed at the above-mentioned first protuberance face opposed with above-mentioned second protuberance.

The feature of the compressor involved by technological scheme 6 is, in the compressor described in technological scheme 5, above-mentioned first protuberance has the first projection, and above-mentioned first projection is formed at the face opposed with above-mentioned second protuberance of above-mentioned first protuberance, and outstanding to above-mentioned second protuberance side.

The feature of the compressor involved by technological scheme 7 is, in the compressor described in technological scheme 6, above-mentioned first projection is to be formed as ring-type along the mode in the above-mentioned first protuberance face opposed with above-mentioned second protuberance.

The feature of the compressor involved by technological scheme 8 is, in compressor described any one of technological scheme 5 ~ 7, above-mentioned second protuberance has the second projection, above-mentioned second projection is formed at the face opposed with above-mentioned first protuberance of above-mentioned second protuberance, and outstanding to above-mentioned first protuberance side.

The feature of the compressor involved by technological scheme 9 is, in the compressor described in technological scheme 8, above-mentioned second projection is to be formed as ring-type along the mode in the above-mentioned first protuberance face opposed with above-mentioned second protuberance.

The feature of the compressor involved by technological scheme 10 is, in compressor described any one of technological scheme 1 ~ 3,5 ~ 7, above-mentioned seal container is configured to above-mentioned conjugation tube: above-mentioned seal container and above-mentioned conjugation tube engage by resistance welding and be formed with the second weld part.

Compressor involved by the utility model, connects the suction connection made of iron of suction pipe and compressing mechanism and is connected to seal container and is engaged for the conjugation tube made of iron that suction connection inserts.That is, suction connection and conjugation tube is formed with iron.Therefore, without the need to using the copper than iron costliness, correspondingly, manufacture cost can be suppressed to increase.

Compressor involved by the utility model, even if when the effect such as by resistance welding etc. and so on has the welding method of the power pressed towards seal container side by suction connection to engage, this masterpiece also can be suppressed for compression container and this situation of compression unit.Namely, compressor involved by the utility model, owing to having conjugation tube, therefore, when the joint of suction connection and conjugation tube, even if suction connection is pressed by seal container side, suction connection also can be suppressed directly to be pressed against this situation of seal container side, this pressing force can be suppressed to directly act on seal container and this situation of compression unit.

In addition, the compressor involved by the utility model, owing to having conjugation tube, therefore such as can keep conjugation tube that suction connection is carried out resistance welding to the pressing of seal container side when implementing resistance welding.Therefore, when suction connection is pressed to seal container side, this pressing force can be suppressed to act on seal container and this situation of compression unit.

Like this, the compressor involved by the utility model, owing to can suppress the structure producing distortion at seal container and compression unit when having and such as engage implementing resistance welding, therefore, it is possible to suppress reliability to reduce this situation.

Accompanying drawing explanation

Fig. 1 is the sectional view of the structure of the compressor 100 schematically shown involved by mode of execution 1 of the present utility model.

Fig. 2 schematically shows the suction connection 12 of the compressor 100 shown in Fig. 1 and the sectional view of the joint of conjugation tube 10.

Fig. 3 A is the schematic diagram be described the structure of conjugation tube 10.

Fig. 3 B is the schematic diagram be described the structure of suction connection 12.

Fig. 3 C is the schematic diagram be described the structure of suction pipe 15.

Fig. 3 D is the schematic diagram be described the first weld part.

Fig. 4 is the horizontal cross of the structure of the electrode (first electrode 20 and the second electrode 21) of the resistance welding schematically shown in the joint of the suction connection 12 shown in Fig. 2 and conjugation tube 10.

Fig. 5 A is the figure of the structure of the second electrode 21 schematically showing the resistance welding shown in Fig. 4.

Fig. 5 B is the stereogram of the structure of the first electrode 20 schematically showing the resistance welding shown in Fig. 4.

Fig. 5 C is the side view of the structure of the first electrode 20 schematically showing the resistance welding shown in Fig. 4.

Fig. 5 D is flow chart when manufacturing compressor 100.

Fig. 6 is the variation of the conjugation tube 10 of compressor 100 involved by mode of execution 1 of the present utility model, is the schematic diagram be described the form that electrode receiving portion is formed as cone-shaped.

Fig. 7 is the suction connection 120 of the compressor 100 schematically shown involved by mode of execution 2 of the present utility model and the sectional view of the joint of conjugation tube 110.

Fig. 8 A is the schematic diagram be described the structure of conjugation tube 110.

Fig. 8 B is the schematic diagram be described the structure of suction connection 120.

Fig. 9 is the variation of the conjugation tube 110 of compressor 100 involved by mode of execution 2 of the present utility model, is the schematic diagram to forming the form of bossed structure as suction connection 120 and be described.

Figure 10 is the explanatory drawing of conventional example 1.

Figure 11 is the explanatory drawing of conventional example 2.

The explanation of reference character

1: seal container; 1A: main part; 1AA: main body bellying; 1B: upper casing; 2: electrodynamic element; 2A: stator; 2B: rotor; 3: compression unit; 4: live axle; 5: cylinder body; 6: rotary-piston; 7: upper bearing (metal); 8: lower bearing; 9: discharge tube; 10a: copper pipe; 10: conjugation tube; 10A1: diameter reducing part; 10A2: cylindrical portion; 10A3: protuberance; 10A4: internal diameter bight; 10B2: cylindrical portion; 12: suction connection; 12A: the first protuberance; 12A1: compression unit joint; 12A2: straight pipe portion; 12A3: protuberance; 12A4: conical surface portion; 12A5: conical surface portion; 12A6: smooth face; 12A7: suction pipe insertion part; 12AA: cylindrical portion; 14: liquid-storage container (accumulator); 14A: refrigeration agent intake channel; 15: suction pipe; 15A: bellying; 20: the first electrodes; 20A: blank part; 20A1: opening portion; 20B: planar surface portion; 21: the second electrodes; 21A: opening portion; 21B: concave shape portion; 22: seam; 23: insulating material; 100: compressor; 110: conjugation tube; 110A4: projection; 120: suction connection; 120A3: protuberance; 120A4: projection; P: the first weld part.

Embodiment

Below, reference accompanying drawing etc. are described the compressor 100 involved by the mode of execution of model utility.Here, comprise Fig. 1, in figures in the following, the part marking identical reference character represents identical or suitable part, and this is general in following described mode of execution.

Mode of execution 1.

Fig. 1 is the sectional view of the structure of the compressor 100 schematically shown involved by present embodiment 1.Fig. 2 schematically shows the suction connection 12 of the compressor 100 shown in Fig. 1 and the sectional view of the joint of conjugation tube 10.Fig. 3 A ~ Fig. 3 D is the schematic diagram be described structure and the first weld part P of conjugation tube 10 grade.Be described with reference to the structure of Fig. 1, Fig. 2, Fig. 3 A ~ Fig. 3 D to compressor 100.In addition, Fig. 1, Fig. 2, Fig. 3 A ~ Fig. 3 D is the longitudinal section of various structure.

[structure explanation]

As shown in Figure 1, compressor 100 has: seal container 1; Electrodynamic element 2; Compression unit 3; And the liquid-storage container 14 of accumulation liquid refrigerant.In addition, compressor 100 has: the conjugation tube 10 be connected with seal container 1; Be inserted in the suction connection 12 of conjugation tube 10; And connect the suction pipe 15 of liquid-storage container 14 and suction connection 12.

Here, after be about to describe, conjugation tube 10 engages by resistance welding with suction connection 12.The weld part (joining portion) of conjugation tube 10 and suction connection 12 is corresponding to the first weld part P.In addition, seal container 1 and conjugation tube 10 such as engage by resistance welding (projection welding).Seal container 1 corresponds to the second weld part with the weld part of conjugation tube 10.Further, suction pipe 15 and suction connection 12 are such as by the joint such as soldering, arc welding.

(seal container 1)

Seal container 1 is the parts containing electrodynamic element 2 and compression unit 3.At seal container 1, be connected with liquid-storage container 14 via various pipe arrangement.Seal container 1 has: the main part 1A having bottom tube-like; And upper casing 1B, this upper casing 1B is installed on the opening portion formed on the top of bottom container.Upper casing 1B is pressed in main part 1A, and connects by arc welding.At the main part 1A of seal container 1, be formed with the opening portion installed for suction connection 12 and conjugation tube 10.The discharge tube 9 of being discharged by the refrigeration agent after being compressed by compression unit 3 is connected with at upper casing 1B.

(electrodynamic element 2)

Electrodynamic element 2 such as has: stator 2A, and this stator 2A is fixed on the inner peripheral surface of seal container 1; And rotor 2B, this rotor 2B is rotatably arranged at the inner side of stator 2A.Stator 2A is such as wound with the winding for current flowing.In addition, rotor 2B is connected with the live axle 4 of compression unit 3 described later.

(compression unit 3)

Compression unit 3 has: cylinder body 5, and this cylinder body 5 has the space compressed refrigerant gas; Transmit the live axle 4 of the driving force of electrodynamic element 2; The upper bearing (metal) 7 of supporting driving shaft 4 and lower bearing 8; And rotary-piston 6, this rotary-piston 6 is chimeric with the eccentric part that live axle 4 has, and rotates in cylinder body 5.

Cylinder body 5 is connected with the end of a side of suction connection 12.The refrigeration agent in liquid-storage container 14 is supplied to cylinder body 5.And, cylinder body 5 is provided with rotary-piston 6, refrigeration agent by this rotary-piston 6 effect and compressed.The upper end side of live axle 4 is connected with rotor 2B, and lower end side is connected with upper bearing (metal) 7 and lower bearing 8.Live axle 4 is for being passed to rotary-piston 6 by the driving force of electrodynamic element 2.Upper bearing (metal) 7 and lower bearing 8 are arranged at upper surface part and the lower surface portion of cylinder body 5.

(liquid-storage container 14)

Liquid-storage container 14 is for storing liquid refrigeration agent and supplied towards compression unit 3 by gaseous refrigerant, is connected with refrigeration agent intake channel 14A on the top of liquid-storage container 14.In addition, suction pipe 15 is connected with in the bottom of liquid-storage container 14.

(conjugation tube 10)

Conjugation tube 10 is that a side is connected with seal container 1, and is inserted with the iron components of suction connection 12.As shown in Figure 3A, conjugation tube 10 has: the diameter reducing part 10A1 engaged with the main part 1A of seal container 1; The cylindrical portion 10A2 of the tubular formed in the mode extended in the horizontal direction; And be formed at the protuberance 10A3 of end of the opposing party of cylindrical portion 10A2.Here, protuberance 10A3 corresponds to the second protuberance.

Diameter reducing part 10A1 is formed as along with from trend compression unit 3 side, conjugation tube 10 side, external diameter diminishes.That is, diameter reducing part 10A1 is formed as tending to a side side and external diameter diminishes along with the opposing party side from conjugation tube 10.Diameter reducing part 10A1 is formed at the end of a side of cylindrical portion 10A2.Diameter reducing part 10A1 is arranged at the opening portion of the main part 1A of seal container 1, and engages with the forming section of the opening portion in this seal container 1.Diameter reducing part 10A1 such as engages by resistance welding with main part 1A.

Cylindrical portion 10A2 is the rounded parts of sectional shape.Cylindrical portion 10A2 is formed with diameter reducing part 10A1 in the end of a side, is formed with protuberance 10A3 in the end of the opposing party.Suction connection 12 is inserted with at cylindrical portion 10A2.That is, the inner peripheral surface of cylindrical portion 10A2 is opposed with the outer circumferential face of suction connection 12 (the straight pipe portion 12A2 of suction connection 12).

Protuberance 10A3 is formed at the end of the opposing party of cylindrical portion 10A2, gives prominence to outer peripheral side from inner circumferential side, and is arranged at and compares protuberance 12A3 by the position of compression unit 3 side.The second electrode 21 described later is provided with between protuberance 10A3 and the outer circumferential face of seal container 1.Protuberance 10A3 has the internal diameter bight 10A4 of the inner peripheral surface at the forming position place being formed at protuberance 10A3.

Internal diameter bight 10A4 is formed at the inner peripheral surface of the end of the opposing party in conjugation tube 10.Internal diameter bight 10A4 is formed throughout the complete cycle of the inner peripheral surface of the end of the opposing party.Internal diameter bight 10A4 is preferably the edge shape of 90 degree, but also can be formed as small overlap, chamfer shape.The state that internal diameter bight 10A4 is pressed against this internal diameter bight 10A4 with protuberance 12A3 engages with protuberance 12A3.That is, protuberance 12A3 has the conical surface portion 12A4 corresponding with internal diameter bight 10A4, and conical surface portion 12A4 contacts with internal diameter bight 10A4.And, be implemented resistance welding under the state that suction connection 12 is pressed against seal container 1 in the effect by the first electrode 20 described later.

(suction connection 12)

Suction connection 12 is that a side is connected with compression unit 3, the iron components that the opposing party is connected with suction pipe 15.That is, suction connection 12 is parts that compression unit 3 is communicated with suction pipe 15.Suction connection 12 engages in advance with suction pipe 15.Preferably by furnace brazing during manufacture liquid-storage container 14, suction connection 12 is combined integratedly with suction pipe 15, but also can in addition by joints such as gas brazing, arc welding, laser beam welding.From the viewpoint of cost, expect to make suction connection 12 by shapings such as forgings, but also can be undertaken processing by cutting and obtain.

As shown in Figure 3 B, suction connection 12 has: the end of a side of the cylindrical portion 12AA of tubular, this cylindrical portion 12AA is connected with compression unit 3, and extends in the horizontal direction; And be formed at the protuberance 12A3 of end of the opposing party of cylindrical portion 12AA.Here, protuberance 12A3 corresponds to the first protuberance.

Cylindrical portion 12AA has: compression unit joint 12A1, and this compression unit joint 12A1 is inserted in the opening portion of the main part 1A of seal container 1, and is connected with compression unit 3; And the end of a side of straight pipe portion 12A2, this straight pipe portion 12A2 is connected with compression unit joint 12A1, the end of the opposing party is connected with protuberance 12A3, and opposed with the inner peripheral surface of conjugation tube 10.It is less than the external diameter of straight pipe portion 12A2 that compression unit joint 12A1 is formed as external diameter.Straight pipe portion 12A2 is inserted in conjugation tube 10.That is, conjugation tube 10 has following function: when being connected with compression unit 3 by suction connection 12, guides suction connection 12.

Protuberance 12A3 is the end of the opposing party being formed at suction connection 12, and the ring-shaped member given prominence to outer peripheral side from inner circumferential side.Be formed with conical surface portion 12A4 at protuberance 12A3, this conical surface portion 12A4 is formed as along with the enlarged outside diameter from trend conjugation tube 10 side, compression unit 3 side.That is, conical surface portion 12A4 is formed as along with the side side from suction connection 12 tends to the opposing party side and enlarged outside diameter.In addition, have at protuberance 12A3: the conical surface portion 12A4 being formed at the face of seal container 1 side; Be formed at the conical surface portion 12A5 of the inner peripheral surface at the forming position place of protuberance 12A3; And be formed at the smooth facial 12A6 of opposition side of conical surface portion 12A4.

Conical surface portion 12A4 is arranged to contact with the internal diameter bight 10A4 of conjugation tube 10.Conical surface portion 12A5 is the part being formed as the entrance inserted for suction pipe 15.Conical surface portion 12A5 is formed as along with from trend suction connection 12 side, seal container 1 side, internal diameter expands.That is, conical surface portion 12A5 is formed as expanding along with the side side from suction connection 12 tends to the opposing party side and internal diameter.Owing to being formed with this conical surface portion 12A5, easily suction pipe 15 is inserted in the pipe insertion part 12A7 of suction connection 12.Smooth facial 12A6 has the tabular surface vertical with the long side direction of suction connection 12.The first electrode 20 utilized when smooth facial 12A6 is provided with resistance welding described later.

(suction pipe 15)

Suction pipe 15 is that a side is connected with suction connection 12, the parts that the opposing party is connected with liquid-storage container 14.The formation material of suction pipe 15 changes according to this suction pipe 15 and the connecting means of suction connection 12.Such as, when being engaged with suction connection 12 by suction pipe 15 by arc welding, laser beam welding etc., suction pipe 15 is necessary for iron, but when being engaged by one soldering, gas brazing etc., can be iron, also can be copper.

(the first weld part P)

As shown in Figure 3 D, the first weld part P is formed at the surface of contact of protuberance 12A3 and protuberance 10A3.That is, the surface of contact of conical surface portion 12A4 and internal diameter bight 10A4 is formed at.And the tip side of the opposing party in the first weld part P is formed as enlarged-diameter.First weld part P is formed by resistance welding by suction connection 12 and conjugation tube 10.

[action specification]

Next, action is described.If make live axle 4 rotate by electrodynamic element 2, then rotary-piston 6 eccentric rotary in cylinder body 5, thus, refrigeration agent is imported in cylinder body 5 by suction connection 12 from liquid-storage container 14, carries out the compression of refrigeration agent.Refrigeration agent after compression, after being temporarily released in seal container 1, is discharged by (omitting diagram) such as condensers from discharge tube 9 by the gap of electrodynamic element 2.The refrigeration agent flowed through after condenser, throttling arrangement, vaporizer etc. returns liquid-storage container 14 again.This circulation is carried out repeatedly.

[manufacture method]

Fig. 4 is the horizontal cross of the structure of the electrode (first electrode 20 and the second electrode 21) of the resistance welding schematically shown in the joint of the suction connection 12 shown in Fig. 2 and conjugation tube 10.Fig. 5 A is the figure of the structure of the second electrode 21 schematically showing the resistance welding shown in Fig. 4.Fig. 5 B is the stereogram of the structure of the first electrode 20 schematically showing the resistance welding shown in Fig. 4.Fig. 5 C is the side view of the structure of the first electrode 20 schematically showing the resistance welding shown in Fig. 4.Fig. 5 D is flow chart when manufacturing compressor 100.Be described with reference to the manufacture method of Fig. 4, Fig. 5 A ~ Fig. 5 D to compressor 100.

As shown in Figure 5 D, when connecting the conjugation tube 10 of compressor 100, suction connection 12 and suction pipe 15, through following operation.That is, in the manufacture method of compressor 100, have: conjugation tube connects operation; Suction pipe connects operation; Suction connection connects operation; Electrode setting process; And resistance welding operation.

(conjugation tube connection operation)

Connect in operation at conjugation tube, the end of a side of conjugation tube 10 made of iron is connected with the main part 1A of seal container 1.Specifically, by conjugation tube 10 and main part 1A resistance welding.In addition, resistance welding here implements under the state not being provided with compression unit 3 and electrodynamic element 2 etc. in seal container 1.Therefore, it is possible to implement resistance welding being provided with under to the state of the parts that the inner circumferential side of the main part 1A of seal container 1 keeps etc.Therefore, owing to implementing resistance welding, even if conjugation tube 10 to be pressed on the main part 1A of seal container 1, also can prevent seal container 1 from producing distortion.After enforcement conjugation tube connects operation, before ensuing suction connection connects operation, compression unit 3 etc. is set in seal container 1.

(suction pipe connection operation)

Connect in operation at suction pipe, the end of a side of suction pipe 15 is connected with the end of the opposing party of suction connection 12.It is in advance by operation that suction pipe 15 is connected with suction connection 12 before ensuing suction connection connects operation that this suction pipe connects operation.Connect in operation at this suction pipe, such as, engage by furnace brazing, gas brazing, arc welding, laser beam welding etc.

(suction connection connection operation)

Connect in operation at suction connection, suction connection 12 made of iron is inserted in conjugation tube 10, and the end of a side of suction connection 12 is connected with the compression unit 3 in seal container 1.

(electrode setting process)

In electrode setting process, suction connection 12 arranges the first electrode 20, and the second electrode 21 is set at the back side of the protuberance 10A3 of conjugation tube 10.Namely, in electrode setting process, that the first electrode 20 is set on the protuberance 12A3 of the end of the opposing party being previously formed in suction connection 12, and the operation of the second electrode 21 is set in the mode be folded between protuberance 10A3 and seal container 1, above-mentioned protuberance 10A3 is previously formed in the end of the opposing party of conjugation tube 10, and is positioned at and compares the first protuberance 12A by the position of seal container 1 side.First electrode 20 is arranged on smooth facial 12A6.Here, the first electrode 20 and the second electrode 21 are the electrodes used in resistance welding, with resistance welding with power supply (omit and illustrate) be connected.

In electrode setting process, the mode being positioned at the position comparing the second top side of electrode 21 with the first electrode 20 arranges the first electrode 20 and the second electrode 21.That is, seal container 1 is positioned at downside, and suction connection 12 is positioned at upside.

First electrode 20 is configured in the top of the smooth facial 12A6 of suction connection 12, and in downward direction pressurizes to smooth facial 12A6, and suction connection 12 is pressed against conjugation tube 10 thus.

Second electrode 21 is configured at the back side (face by seal container 1 side) of conjugation tube 10 (protuberance 10A3).That is, the second electrode 21 is to enter the form configuration of the downside of the protuberance 10A3 of conjugation tube 10.Thus, the second electrode 21 is folded between protuberance 10A3 and seal container 1.

Thus, by pressing the first electrode 20 to downside, suction connection 12 is pressed against conjugation tube 10.Therefore, even if the first electrode 20 is to downside pressing suction connection 12, also conjugation tube 10 can be suppressed to be absorbed in this situation of seal container 1 by the effect of the second electrode 21, the distortion of seal container 1 and compression unit 3 can be suppressed.That is, the second electrode 21 bears plus-pressure conjugation tube 10 being pressed into seal container 1 produced by suction connection 12, keeps conjugation tube 10 in the mode making load can not put on seal container 1.

(resistance welding operation)

Resistance welding operation (projection welding operation) is that electric current is flowed at the first electrode 20 and the second electrode 21, conjugation tube 10 and suction connection 12 is carried out to the operation of resistance welding.By implementing resistance welding operation, flowing through in conjugation tube 10 and the contact segment of suction connection 12 and having electric current thus this contact segment is heated, thus engaging.By making to flow through with the time preset the electric current having the size preset between the first electrode 20 and the second electrode 21, thus suction connection 12 is engaged with the surface of contact of conjugation tube 10.

[first electrode 20 and the second electrode 21]

The structure etc. of the first electrode 20 and the second electrode 21 is described.With reference to Fig. 4, Fig. 5 A ~ Fig. 5 C, the first electrode 20 utilized in the manufacture of compressor 100 and the second electrode 21 are described.

As shown in Figure 5A, the second electrode 21 adopts the form (also can separate for front and back) of dividing right and left, stably to be engaged by the complete cycle of suction connection 12 and conjugation tube 10.Second electrode 21 is formed with the opening portion 21A inserted for conjugation tube 10 and suction connection 12.Further, the second electrode 21 is formed: the back part of conjugation tube 10 is cut such concave shape portion 21B; And seam 22, do not produce ladder difference to make the second electrode 21 of left and right.Concave shape portion 21B is the recess of ring-type, arranges for protuberance 10A3.Opening portion 21A is formed at the central part of concave shape portion 21B.

In addition, if seal container 1 and the second electrode 21 rear-face contact, then there is electric current and flow herein and make not want the possibility that the place (or place different from junction) that engages is engaged.Therefore, at the second electrode 21, the face by seal container 1 side is provided with insulating material 23.

In addition, in the first electrode 20 and the second electrode 21, electrode can be made up of common copper material or the Cu alloy material that improve intensity.Here, interval between the protuberance 10A3 and seal container 1 of conjugation tube 10 is narrow, if the strength deficiency of the second electrode 21, then there is the second electrode 21 to be out of shape when the first electrode 20 is pressed on conjugation tube 10, also plus-pressure is applied with to seal container 1, thus makes the possibility that seal container 1 and cylinder body 5 are out of shape.Therefore, the contact segment contacted with conjugation tube 10 that can make the second electrode 21 is copper or Cuprum alloy system, makes the part of seal container 1 side be iron-based nonmagnetic substance, can guarantee intensity.

As shown in Fig. 5 B and Fig. 5 C, the first electrode 20 is also same with the second electrode 21 adopts the form of dividing right and left.First electrode 20 has: the blank part 20A configured for suction pipe 15; And be formed at a side side of blank part 20A and the opening portion 20A1 of the opposing party side respectively.In addition, the first electrode 20 has the planar surface portion 20B contacted with the smooth facial 12A6 of suction connection 12.It is consistent with the face of planar surface portion 20B that first electrode 20 and suction connection 12 are configured to smooth facial 12A6, therefore, it is possible to transmitted to suction connection 12 side efficiently by the plus-pressure of the first electrode 20, can implement resistance welding more reliably.

[effect that the compressor 100 involved by present embodiment 1 has]

Compressor 100 involved by present embodiment 1 has suction connection 12 made of iron and conjugation tube made of iron 10 engages and the first weld part P of formation by resistance welding, suction connection 12 connects suction pipe 15 and the compression unit 3 of liquid-storage container 14 side, and conjugation tube 10 is connected to seal container 1 and inserts for suction connection 12.That is, not by soldering, suction connection 12 is engaged with conjugation tube 10, the material than iron costliness of copper and so on can not be used, correspondingly, manufacture cost can be suppressed to increase.

Suction connection 12 is not directly pressed on seal container 1 to carry out resistance welding by the compressor 100 involved by present embodiment 1, but suction connection 12 is pressed on conjugation tube 10 to carry out resistance welding.That is, when being pressed to seal container 1 side by suction connection 12, owing to there is conjugation tube 10, this pressing force can be suppressed to directly act on seal container 1 and this situation of compression unit 3.

In addition, the compressor 100 involved by present embodiment 1 has conjugation tube 10, therefore, when implementing resistance welding, can keep conjugation tube 10 limit that suction connection 12 is carried out resistance welding to the pressing of seal container 1 side in limit.Therefore, when being pressed to seal container 1 side by suction connection 12, this pressing force can be suppressed to act on seal container 1 and this situation of compression unit 3.

Like this, the compressor 100 involved by present embodiment 1 has the structure that can suppress to produce at seal container 1 and compression unit 3 distortion when implementing resistance and engaging, therefore, it is possible to suppress reliability to reduce this situation.

Compressor 100 involved by present embodiment 1 can suppress to produce this situation of distortion at compression unit 3, therefore, it is possible to suppress the increase of the wearing and tearing of the various parts of the compression unit 3 caused because of distortion, reliability can be suppressed to reduce this situation.

Compressor 100 involved by present embodiment 1 welds with suction connection 12 conjugation tube 10 by resistance welding, therefore, it is possible to suppress the generation of the dispersing of gas, noise etc., working environment can be suppressed to worsen this situation.In addition, in soldering, compared with resistance welding, the dispersing of gas, noise etc. are easily produced.

In soldering, need to apply heat, until become the state that solder can soak into the weld part to pipe arrangement to weld part.Therefore, there is heat and be passed to the compression unit 3 (cylinder body 5 etc.) thus the possibility causing the distortion of compression unit 3 that are connected to suction connection 12.In addition, in soldering, not only to weld part, sometimes also heat is applied to the side etc. of seal container 1.There is the possibility causing the distortion of seal container 1 because of the heat applied the side of this seal container 1.On the other hand, in the compressor 100 involved by present embodiment 1, owing to being engaged with suction connection 12 by conjugation tube 10 by resistance welding, therefore, it is possible to suppress to cause because of heat producing this situation of distortion at compression unit 3, reliability can be suppressed to reduce this situation.

Figure 10 is the explanatory drawing of conventional example 1.In conventional example 1, in order to carry out the joint based on soldering, copper facing is imposed to suction connection 12.Then, soldering is carried out to suction connection 12 and the copper pipe 10a of the guiding being connected to conjugation tube 10.Like this, need copper product, correspondingly, manufacture cost increases.In addition, the problem that the distortion of the cylinder body 5 that reason soldering produces and the problems such as the hydraulic performance decline that causes and working environment worsen and so on can be produced.But, in present embodiment 1, by resistance welding, suction connection 12 is engaged with conjugation tube 10, can solve the above problems thus.

Figure 11 is the explanatory drawing of conventional example 2.In conventional example 2, swollen convex processing is imposed to the suction pipe 15 doubling as suction connection and forms the bellying 15A possessing par, and processed by flange to make bloat outside the side of seal container 1 and form main part bellying 1AA.Then bellying 15A is welded with the main part bellying 1AA of seal container 1.In the method, because seal container 1 directly bears the plus-pressure applied to carry out resistance welding, therefore not only producing the distortion of seal container 1, compression unit 3 side and cylinder body 5 also can be made to be out of shape.Therefore, there is the hydraulic performance decline etc. causing compressor, the possibility of infringement reliability.But, in present embodiment 1, utilize conjugation tube 10 to carry out bearing load due to additional conjugation tube 10, be formed as the structure of the distortion that can prevent cylinder body 5, the reliability of compressor 100 can be suppressed to reduce this situation.

In addition, in the form of Figure 11, do not have the structure that conjugation tube 10 is such, bellying 15A directly contacts with seal container 1.Therefore, be difficult to carry out keeping making just not to be pressed at pressurized parts (bellying 15A).On the other hand, in the compressor 100 involved by present embodiment 1, owing to not having conjugation tube 10, therefore easily keep resistance welding time bulged-in parts.

In present embodiment 1, the form that suction connection 12 and conjugation tube 10 engage by resistance welding is illustrated, but is not limited thereto.As long as suction connection 12 made of iron can be engaged with conjugation tube 10 made of iron, the joint method beyond resistance welding also can be adopted.

[variation of mode of execution 1]

Fig. 6 is the variation of the conjugation tube 10 of compressor 100 involved by present embodiment 1, is the schematic diagram be described the form that electrode receiving portion is formed as cone-shaped.Fig. 6 is the horizontal cross of conjugation tube 10 grade.As shown in Figure 6, conjugation tube 10 has cylindrical portion 10B2, and this cylindrical portion 10B2 is formed as along with tending to the opposing party side from a side side and enlarged outside diameter.The outer circumferential face of cylindrical portion 10B2 is electrode receiving portion.In the form of Fig. 6, because effect has the power expanded to the left and right by divided for left and right the second electrode 21 opened, therefore need to add and carry out the mechanism that keeps, but due to the load reduction of Vertical direction, therefore there is the effect that can extend the life-span of the second electrode 21.In addition, also there is the effect of the shaping based on forging easily carrying out conjugation tube 10.

Mode of execution 2.

Fig. 7 is the suction connection 120 of the compressor 100 schematically shown involved by present embodiment 2 and the sectional view of the joint of conjugation tube 110.Fig. 8 A is the schematic diagram be described the structure of conjugation tube 110.Fig. 8 B is the schematic diagram be described the structure of suction connection 120.With reference to Fig. 7, Fig. 8 A and Fig. 8 B, the compressor 100 involved by present embodiment 2 is described.In addition, in present embodiment 2, identical reference character is marked to the structure common with mode of execution 1, is described centered by difference.

In mode of execution 1, be formed as the form that the first weld part P is formed at the surface of contact of the internal diameter bight 10A4 of conjugation tube 10 and the conical surface portion 12A4 of suction connection 12.On the other hand, in present embodiment 2, do not form internal diameter bight 10A4 at conjugation tube 110, replace making the cross section parallel with the long side direction of conjugation tube 110 rectangular in this.And, in conjugation tube 110, be formed with projection 110A4 in the forming position of protuberance 10A3.In addition, in present embodiment 2, replace the protuberance 12A3 of suction connection 120 and be formed with the protuberance 120A3 without conical surface portion 12A4.

Conjugation tube 110 has protuberance 10A3, and this protuberance 10A3 is formed at the end of the opposing party of conjugation tube 110, gives prominence to outer peripheral side from inner circumferential side, and is arranged at and compares protuberance 120A3 by the position of compression unit 3 side.And this protuberance 10A3 is formed in the mode opposed with protuberance 120A3, and have to the outstanding raised 110A4 in protuberance 120A3 side.Projection 110A4 is to be formed as ring-type along the mode in the protuberance 10A3 face opposed with protuberance 120A3.Herein, projection 110A4 corresponds to the first projection.

Suction connection 120 has the protuberance 120A3 of ring-type, and this protuberance 120A3 is formed at the end of the opposing party of suction connection 120, and gives prominence to outer peripheral side from inner circumferential side.Protuberance 120A3 and protuberance 10A3 is opposite disposed.And this protuberance 120A3 is formed as being parallel to the opposed faces with protuberance 10A3.That is, the face by protuberance 10A3 side of protuberance 120A3 is parallel with vertical.

Though the diagram of eliminating, the first weld part P is formed at the surface of contact of protuberance 120A3 and projection 110A4.

[effect that the compressor 100 involved by present embodiment 2 has]

Compressor 100 involved by present embodiment 2, except having the effect identical with the compressor 100 involved by mode of execution 1, also has following effect.

In the compressor 100 involved by present embodiment 2, because conjugation tube 110 has projection 110A4, therefore, even if the core of suction connection 120 and the core of conjugation tube 110 depart from when suction connection 120 is inserted in cylinder body 5, the surface of contact of protuberance 120A3 and protuberance 10A3 is also stablized, therefore, it is possible to improve bond quality.

[variation of mode of execution 2]

Fig. 9 is the variation of the conjugation tube 110 of compressor 100 involved by present embodiment 2, is the schematic diagram to forming the form of bossed parts as suction connection 120 and be described.As shown in Figure 9, also can not form projection 110A4 at conjugation tube 110, and form projection 120A4 at suction connection 120.That is, protuberance 120A3 is formed at the face opposed with protuberance 10A3, and has to the outstanding raised 120A4 in protuberance 10A3 side.Projection 120A4 is to be formed as ring-type along the mode in the protuberance 10A3 face opposed with protuberance 120A3.Herein, projection 120A4 corresponds to the first projection.

In addition, also can be present embodiment 2 is carried out combining with the variation of present embodiment 2 and forms bossed form both sides.That is, also can form projection 110A4 at conjugation tube 110 and form projection 120A4 at suction connection 120.

In addition, suction connection 120 is pressed into the insertion part in cylinder body 5 usually.Here, also insulating sealing materials can be possessed at the contact position of the compression unit joint 12A1 of suction connection 120 and cylinder body 5.Thereby, it is possible to suppress the distortion of the cylinder body 5 caused because of the press-in of suction connection 120, and welding current is not shunted and concentrates between suction connection 120 and conjugation tube 110, therefore, it is possible to stably carry out resistance welding.

Claims (10)

1. a compressor, described compressor possesses:

Seal container;

Compression unit, described compression unit is arranged in described seal container, compresses refrigeration agent; And

Motor unit, described motor unit is arranged in described seal container, and drives described compression unit,

The feature of described compressor is,

Described compressor possesses:

Conjugation tube made of iron, a side of described conjugation tube is connected with described seal container;

Suction connection made of iron, described suction connection is inserted in described conjugation tube, and a side is connected with described compression unit; And

Suction pipe, a side of described suction pipe is connected with the opposing party of described suction connection,

Described suction connection has the first protuberance of ring-type, and described first protuberance is formed at the end of the opposing party of described suction connection, and gives prominence to outer peripheral side from inner circumferential side,

Described suction connection and described conjugation tube are configured to: the engaged at end of described first protuberance of described suction connection and the opposing party of described conjugation tube.

2. compressor according to claim 1, is characterized in that,

Described suction connection and described conjugation tube are configured to: the end of described first protuberance of described suction connection and the opposing party of described conjugation tube is implemented resistance welding and is formed with the first weld part.

3. compressor according to claim 2, is characterized in that,

Described first protuberance has conical surface portion, and described conical surface portion is formed as along with the side side from described suction connection tends to the opposing party side and enlarged outside diameter,

Described conjugation tube has the internal diameter bight of ring-type at the inner peripheral surface of the end of the opposing party,

Described conical surface portion is pressed against described internal diameter bight,

Described first weld part is at least formed at the surface of contact in described internal diameter bight and described conical surface portion.

4. the compressor according to any one of claims 1 to 3, is characterized in that,

Described engaged tubular becomes along with the side side from described conjugation tube tends to the opposing party side and enlarged outside diameter.

5. compressor according to claim 2, is characterized in that,

Described conjugation tube has the second protuberance, and described second protuberance is formed at the end of the opposing party of described conjugation tube, gives prominence to outer peripheral side from inner circumferential side, and is arranged at and compares described first protuberance by the position of described compression unit side,

Described first protuberance is arranged opposedly with described second protuberance,

Described first weld part is at least formed at the described first protuberance face opposed with described second protuberance.

6. compressor according to claim 5, is characterized in that,

Described first protuberance has the first projection, and described first projection is formed at the face opposed with described second protuberance of described first protuberance, and outstanding to described second protuberance side.

7. compressor according to claim 6, is characterized in that,

Described first projection is to be formed as ring-type along the mode in the described first protuberance face opposed with described second protuberance.

8. the compressor according to any one of claim 5 ~ 7, is characterized in that,

Described second protuberance has the second projection, and described second projection is formed at the face opposed with described first protuberance of described second protuberance, and outstanding to described first protuberance side.

9. compressor according to claim 8, is characterized in that,

Described second projection is to be formed as ring-type along the mode in the described first protuberance face opposed with described second protuberance.

10. the compressor according to any one of claims 1 to 3,5 ~ 7, is characterized in that,

Described seal container is configured to described conjugation tube: described seal container and described conjugation tube engage by resistance welding and be formed with the second weld part.