CN1277055C - Closed type compressor - Google Patents
Closed type compressor Download PDFInfo
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- CN1277055C CN1277055C CN 03145289 CN03145289A CN1277055C CN 1277055 C CN1277055 C CN 1277055C CN 03145289 CN03145289 CN 03145289 CN 03145289 A CN03145289 A CN 03145289A CN 1277055 C CN1277055 C CN 1277055C
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Abstract
The present invention relates to a hermetic compressor. Annular metal bodies 15, 23 are welded on an airtight terminal 8 and the periphery of the welding part of a discharge pipe 10; the airtight terminal 8 is hermetically welded on an end plate 1 on the upper part of a hermetic container 4. Even if the internal pressure of the hermetic container 4 is increased, and the shape of the end plate 1 on the upper part is changed into a spherical shape, the annular metal body 15 can suppress the deformation of the airtight terminal 8 and can prevent a glass sealed port 12 from cracking. In addition, the annular metal body 23 on the periphery of the welding part of the discharge pipe 10 can reduce tensile stress generated by the welding part of the discharge pipe 10 and can improve the compressive strength of the connecting part of the discharge tube 10; thus, the hermetic container 4 with sufficient compressive strength can be provided.
Description
To be the application people be 98126095.0, be entitled as dividing an application of " hermetic compressor " for Panasonic Electric Equipment Industrial Co.,Ltd, application number the application.
Invention field
The present invention relates to be used for the coolant compressor of cooling air conditioner etc. or the hermetic compressor of air compressor.
Background technique
Existing this coolant compressor in the inside of the seal container of being made up of upper end plate 101, housing section 102, lower end plate 103 104, is fixed with the motor 106 of compressing mechanism 105 and this compressing mechanism 105 of driving as shown in figure 20.And the power supply of motor 106 is supplied in the cup-shaped metal body 107 of seal welding on seal container 104 by the airtight terminal 110 with the conductive pin 109 that insulate with glass-dead seal 108 from external power supply (not shown).
Refrigeration agent is drawn into the compressing mechanism 105 from the suction pipe 111 that is connected with refrigeration cycle (not shown) and is compressed, and becomes high pressure and is discharged in the seal container 104, turns back to the refrigeration cycle (not shown) from discharge tube 112 again.Therefore, the sealed container interior of this compressor is full of the refrigeration agent of high pressure.
As the refrigeration agent of this compressor, always can use HCFC22, but because the destruction that airborne release might cause ozonosphere, so abolish certainly in the future.As the alternative refrigerant of this HCFC22, can enumerate several HFC refrigeration agents, and the mix refrigerant R410A of the mix refrigerant R407C of HFC125, HFC32, HFC134a and HFC125 and HFC32 is most representative.For R407C, its head pressure is roughly identical with R22, and for R410A, its head pressure is about 1.7 times of R22.
Here, when the alternative refrigerant of head pressure that will be so big is used for the occasion of hermetic compressor that seal container itself is subjected to the high pressure type of described head pressure, must improve the compressive strength of seal container 104.But in above-mentioned existing structure, along with seal container 104 pressure inside uprise, top, lower end plate 101,103 just expand slowly englobement to foreign side.Because airtight terminal 110 is weldingly fixed on the par of upper end plate 101, so because of its distortion is subjected to stress and produces distortion on the cup-shaped metal body 107 of airtight terminal 110, glass-dead seal 108 is broken, and produces the phenomenon of high-temperature high-pressure refrigerant to external leaks.In existing structure, this part is the weak part of compressive strength, improve the compressive strength of seal container integral body, just must improve the compressive strength of this part.
In addition, seal container 104 and suction pipe 111, discharge tube 112 etc. promptly are subjected to tensile stress with the bound fraction of the connecting tube of refrigeration agent because of the high pressure of seal container 104 inside, so 110 ones of airtight terminals are the 2nd the more weak positions of compressive strength.
Summary of the invention
The objective of the invention is to, for solving above-mentioned existing shortcoming, provide a kind of glass-dead seal that especially prevents airtight terminal to break and improve the compressive strength of the bound fraction of seal container and refrigeration agent connecting tube, seal container with compressive strength of high pressure resistant alternative refrigerant.
For this reason, the present invention makes following structure: the airtight terminal of seal welding and the refrigeration agent weld part of connecting tube on the seal container of hermetic compressor, the member that the rigidity that makes seal container of annular metal etc. is improved surrounds weld part, and it is welded on the described seal container, thus, even be in high pressure in the seal container, and airtight terminal and refrigeration agent are out of shape with the seal container generation of connecting tube welding, the rigid member of the annular metal that the weld part periphery airtight terminal place and airtight terminal combines etc. can suppress the distortion of airtight terminal, and the breaking of glass-dead seal that can prevent airtight terminal, in addition, the tensile stress that the annular metal that combines with described weld part at connecting tube place can make weld part produce reduces, thereby can improve the adhesive strength of connecting tube and the compressive strength of seal container.
Promptly, in the present invention, set motor in the inside of seal container and with this electric motor driven compressing mechanism, the airtight terminal of seal welding on seal container (comprising end plate and par) is to constitute by cup-shaped metal body, conductive pin with the glass-dead seal portion of described cup-shaped metal body and conductive pin insulation for the power supply of supplying with described motor from sealed container outside, is welded with the weld part that surrounds described seal container and airtight terminal on described seal container, makes the annular metal with respect to rigidity (distortion rigidity) raising of seal container distortion.
In addition, in the present invention, the thickness of annular metal is 1/3 also thicker than the thickness of described seal container, also preferably make the weld part of described annular metal on described seal container circular-arc, thus, the seal container of described annular metal welding portion distortion rigidity can suppress the distortion of airtight terminal effectively.
In addition, in the present invention, be the inside that described annular metal is welded on described seal container, because of being welded on inside, so can not hinder the safety cover of the airtight terminal that externally constitutes and the coiling of power lead.
In addition, in the present invention, described annular metal is welded on the outside of described seal container; and preferably by welding with the protection framework one of airtight terminal; then can not hinder airtight terminal on seal container, to weld, can weld with protection framework one, thus assembling easily.
In addition, in the present invention, when described annular metal welds on seal container, by the projection of wire is set at the welded joint place with seal container or to width less environmental protection hold former state ground and carry out contact welding, on whole the end plates that just can be weldingly fixed on seal container etc., thereby the distortion rigidity such as end plate of seal container can suppress the distortion of airtight terminal effectively.In the occasion of contact welding, for improving current density, the width of annular metal must be done narrow.
In addition, in the present invention, because of the hole of plunging is set on seal container, at the described airtight terminal of this hole place's seal welding, so the airtight terminal peripheral portion be difficult to produce distortion because of plunging, thereby can prevent that glass-dead seal from breaking the raising compressive strength.If carry out plunging, then airtight terminal is just carried out seal welding easily in the inboard of seal container.And if carry out plunging in the outside of seal container, the deformation force that then influences glass-dead seal is just little than being formed on inboard occasion.
In addition, in the present invention, in case with the airtight terminal seal welding on steel plate, on end plate of described seal container etc., has overlapping ground with this steel plate seal welding, even become the generation distortion such as end plate of the seal container of high pressure, welding airtight terminal in the seal container, yet because of the rigidity of overlapping portion is big, so can suppress the distortion of airtight terminal, the glass-dead seal that can prevent airtight terminal is broken, and improves compressive strength.Be thicker than the occasion of seal container (end plate etc.) thickness of slab at the steel plate thickness of seal welding airtight terminal, and, can more effectively bring into play the effect that suppresses the airtight terminal distortion and prevent that glass-dead seal from breaking etc. in the length of steel plate and the overlapping portion of the described seal container occasion longer than the thickness of slab of seal container.
In addition, the present invention constitutes above-mentioned seal container by the housing section and the end plate portion of sealing the housing section opening, and this is effective especially for the hermetic compressor that carries out the seal welding airtight terminal in above-mentioned end plate portion.
In addition, in the present invention, be that sealed container interior is made the structure that compressive strength improves with the outside attachment portion that is connected, passes in and out the connecting tube (discharge tube and suction pipe) of refrigeration agent, and by weld part periphery welding annular metal at connecting tube, reduce to produce the tensile stress of distortion, thereby improve the compressive strength of the attachment portion of connecting tube because of sealed container interior pressure makes the weld part of connecting tube.And be preferably in the hole that on the seal container connecting tube is welded into plunging, can further improve compressive strength thus.In addition, because connecting tube welds with general copper brazing, so just become easy when near annular metal also carries out assembling when soldering is welded simultaneously.
In addition, in the present invention, make offer in the par of seal container with described sealed container interior connect with the outside, identical or with the connecting tube internal diameter of turnover refrigeration agent than its little hole and in the structure of described connecting tube end face welding being fixed with the corresponding seal container outer surface in hole, thereby, when sealed container interior is born high pressure, because the position of welded joint is different from prior art constructions, so locate not to be subjected to big tensile stress, to obtain the raising of seal container compressive strength.In addition, enlarge the connecting tube end face that welds a fixing side with described seal container, and increase the aperture of seal container, then can reduce the resistance of refrigeration agent stream.
In addition, in the present invention,, then compare the temperature less intensity that guarantees pipe that rises during because of welding with welding method such as soldering by described connecting tube being weldingly fixed on the seal container with Diffusion Welding.
In addition, in the present invention, it is identical or than its big slightly recess that periphery in the hole of described seal container forms external diameter with described connecting tube, inserting the end of connecting tube at this recess welds fixing, by the end face of connecting tube and two sides of end peripheral part being weldingly fixed on the seal container with general soldering welding, then when sealed container interior is subjected to high pressure,, thereby can improve the compressive strength of seal container because of welded joint has 2 positions to be difficult to produce destruction in different directions.And the occasion that is subjected to bigger power (tensile force etc.) at described connecting tube also can have enough intensity.
In addition, the present invention as mentioned above, constitute described seal container by housing section with the end plate portion of sealing this housing section opening, the occasion of described airtight terminal of welding and described connecting tube in end plate portion, when in described seal container is subjected to, pressing, because of the distortion of end plate portion is bigger, so the structure of above-mentioned weld part is very effective.
In addition, in the present invention, as refrigeration agent, (be solvent R32, chemical molecular formula is CH to the HFC32 of use high-pressure refrigerant
2F
2) or comprise its mix refrigerant, be more effective.
Description of drawings
Fig. 1 is the longitudinal section of the hermetic compressor of the embodiment of the invention 1, Fig. 2 is the longitudinal section of airtight terminal portion, Fig. 3 is the sectional view of annular metal, Fig. 4 is the longitudinal section of the other form 1 of airtight terminal portion, Fig. 5 is the longitudinal section of the other form 2 of airtight terminal portion, Fig. 6 is the longitudinal section of the other form 3 of airtight terminal portion, and Fig. 7 is the longitudinal section of the other form 4 of airtight terminal portion.
Fig. 8 is embodiment 2 an airtight terminal portion longitudinal section, and Fig. 9 is the longitudinal section of the other form 1 of airtight terminal portion, and Figure 10 is the longitudinal section of the other form 2 of airtight terminal portion.
Figure 11 is embodiment 3 an airtight terminal portion longitudinal section.
Figure 12 is embodiment 4 a connecting tube portion longitudinal section, Figure 13 is the longitudinal section of the other form 1 of connecting tube portion, Figure 14 is the longitudinal section of the other form 2 of connecting tube portion, Figure 15 is the longitudinal section of the other form 3 of connecting tube portion, Figure 16 is the longitudinal section of the other form 4 of connecting tube portion, and Figure 17 is the longitudinal section of the other form 5 of connecting tube portion.
Figure 18 is embodiment 5 a connecting tube portion longitudinal section.
Figure 19 is embodiment 6 a connecting tube portion longitudinal section.
Figure 20 is the longitudinal section of existing hermetic compressor.
Embodiment
Below in conjunction with the accompanying drawings with regard to one embodiment of the invention.
(embodiment 1)
Fig. 1 is the longitudinal section of the hermetic compressor of the embodiment of the invention 1.As shown in the figure, hermetic compressor is in the inside of the seal container of being made up of upper end plate 1, cylindrical shell body 2, lower end plate 34, the motor 6 of configuration compressing mechanism 5 and drive compression mechanism 5 and constituting.Though compressing mechanism 5 is detailed icon not, both revolving, also eddy type.The power supply of motor 6 is supplied with by external power supply (not shown) by the airtight terminal 8 of seal welding on the hole of offering in the upper end plate 1 of seal container 47.
Refrigeration agent sucks from the suction pipe 9 (connecting tube) that is connected with freeze cycle (not shown), and compressed mechanism 5 is collapsed into high pressure and is discharged in the seal container 4, turns back to freeze cycle (not shown) from discharge tube 10 (connecting tube) again.Therefore, in the present embodiment, seal container 4 inside are full of high-pressure refrigerant, become the structure of so-called high pressure type compressor.
Fig. 2 is the enlarged view of 8 ones of airtight terminals of the hermetic compressor of Fig. 1.Airtight terminal 8 has the conductive pin 13 of using glass-dead seal 12 insulation in the upper side of cup-shaped metal body 11.The bottom of cup-shaped metal body 11 has the skirt section 14 that is expanded into the skirt shape, on the hole of offering in the par of upper end plate 17, carries out seal welding with this skirt section 14.In skirt section 14 peripheries of the airtight terminal 8 of seal container 4 inboards, be welded with annular metal 15 as the member that improves seal container 4 rigidity (rigidity of relatively flat portion distortion).
The material of annular metal 15 is general steel, its thickness do be thicker than upper end plate 1 thickness of slab 1/3.In the present embodiment, specifically, end plate 1 thickness of the seal container 4 of steel is 3mm～4mm, and annular metal 15 just is chosen to be about 1.5mm～5mm.The ring width of annular metal 15 is chosen to be 2mm～4mm.In addition, its internal diameter is done greater than the external diameter in the skirt section 14 of airtight terminal 8.
Narrate annular metal 15 and the welding assembly method of airtight terminal 8 on upper end plate 1 below.In the portion that sets of the airtight terminal 8 of upper end plate 1, promptly degree of precision make on the face (par) 16 of flatness, offer the hole 7 that is a bit larger tham cup-shaped metal body 11 external diameters.Annular metal 15 is weldingly fixed on the periphery in hole 7 with contact welding.General contact welding is provided with jut at welding portion and electric current is concentrated weld, and in the occasion of present embodiment, in the contact welding of jut is set, because weld part becomes point-like, and the distortion annular metal 15 of the upper end plate 1 of seal container 4 does not produce the effect that suppresses this distortion relatively, so do not adopt.Therefore, in the present invention, the face 17 that contacts with upper end plate 1 of annular metal 15 is made the higher flatness of precision, it is close to the par 16 of upper end plate 1 equably, turn-on current is carried out contact welding then.In this case, though the big more rigidity of ring width is also big more, owing to current density does not rise, so can not be with its whole impartial welding.So the 2mm to 4mm shown in above-mentioned is suitable.If weld in this way, then weld part is circular-arc, the distortion of upper end plate 1 relatively, and annular metal 15 just plays the effect that suppresses this distortion.Big and do not have the occasion that super-high-current welds at the width of annular metal 15, as shown in Figure 3, wire projection 18 is set on the top 17 of annular metal 15.Generally full wire projection 18 is being set week, but also can make 3 five equilibriums, 4 etc. grade circular-arc.
The withstand voltage evaluation of the seal container 4 of the hermetic compressor of narration present embodiment below.
Refrigeration agent is withstand voltage with the seal container of compressor, generally wishes not produce when being subjected to 3 times to 5 times hydrostatic pressures of design pressure (maximum pressure during operation) destruction (standard, the law of various countries are different).When the inside at the seal container 4 of present embodiment slowly was subjected to 3 times to 5 times hydrostatic pressures of design pressure, seal container 4 expanded gradually, and especially upper end plate 1 is spherically and expands.At this moment, in the occasion of no ring-type metal body 15, the skirt section 14 that is weldingly fixed on the airtight terminal 8 on the par 16 also becomes the part of sphere, presses to the inboard with brute force.Because of this power and inner hydrostatic pressure, glass-dead seal 12 parts are also desired englobement with the shape that enlarges laterally, thereby are subjected to bigger power on glass for sealing, and glass breakage and producing is leaked.But, in the present embodiment, the welding of seal container 4 par 16 of airtight terminal 8 (upper end plate 1), though desire produces spherical distortion, but because annular metal 15 is weldingly fixed on the par 16 of seal container 4, so played the effect that suppresses this distortion, the inboard is pressed to because of powerful in the skirt section 14 that suppresses airtight terminal 8, has prevented breaking of glass-dead seal 12.Therefore, enough compressive strengths of seal container also can realize having to(for) the high pressure refrigeration agent of the HFC32 that contains R410A etc.
In addition, in the above description, welding method has been described, but the welding portion of the par 16 of also available annular metal 15 and seal container 4 becomes circular-arc soldering welding method etc. with contact welding.In addition, annular metal 15 is not complete circular ring, though local opening, or surround airtight terminal 8 weld parts and dispose a plurality of arc metal bodys, also can play the effect that seal container 4 distortion rigidity are improved, obtain equal action effect.In addition, have influence on the glass-dead seal 12 of airtight terminal 8 for the distortion that prevents seal container 4 makes bigger power, the length of weld part is more than 1/4 of full week preferably, and the member of strengthened rigidity is more than 2/3 of full week of weld part of airtight terminal 8 preferably.
In addition, in the airtight terminal of the foregoing description, annular metal 15 is welded on seal container 4 (upper end plate 1) inboard, but as shown in Figure 4, also can be welded on the outside of seal container 4.At this moment, the welding of annular metal 15 and airtight terminal 8 is to be relatively easy to.In addition, as shown in Figure 5,, and weld, just assembling easily with its one by protection framework 19 at the outside of seal container 4 a general configuration airtight terminal 8.And the shape of annular metal 15 such as Fig. 6, shown in Figure 7, also available annular metal 15a with plunging constitutes.
In addition, the material of annular metal 15,15a describes with general steel, if use high tensile steel, then the rigidity effect is bigger.
(embodiment 2)
Fig. 8～Figure 10 represents the airtight terminal portion of the embodiment of the invention 2.
As shown in Figure 8, the hole of offering on upper end plate 17 forms plunging portion 20 towards the inboard of seal container 4.The end face 20a of this plunging portion 20 is processed into the plane, welds the fixedly skirt section 14 of airtight terminal 8 herein.
In the present embodiment, when the internal pressure of seal container 4 rose, seal container 4 just expanded gradually, and upper end plate 1 is spherical and expands.But the rigidity of plunging portion 20 increases, and plays the effect that suppresses described inside part distortion, prevents that the glass-dead seal 12 of airtight terminal 8 from breaking.In addition, in the present embodiment, even also can weld airtight terminal 8, so upper end plate 1, has improved the compressive strength of upper end plate 1 than small deformation because the peripheral part in hole 7 is made spherical shape.In addition, compare with the welding of described annular metal 15,15a, price can be cheap.
In addition, airtight terminal shown in Figure 9, be that above-mentioned plunging portion 20 is constituted towards the outside of seal container 4 (upper end plate 1), with identical towards the situation of inboard, the rigidity of the peripheral portion of airtight terminal 8 is strengthened by plunging portion 20, be difficult to distortion, and can prevent breaking of glass-dead seal 12, improve compressive strength equally.When forming plunging portion 20 in the outside, the deformation force that influences glass-dead seal 12 is littler than the inboard occasion that forms.But,, then be difficult to and airtight terminal 8 welding in case can not correctly be processed into the plane of plunging portion substantial section.
In addition, airtight terminal shown in Figure 10 is in the structure of the periphery welding annular metal 15a of plunging portion 20 shown in Figure 9, can further improve rigidity thus.
(embodiment 3)
Figure 11 represents the airtight terminal portion of the embodiment of the invention 3.
In the present embodiment, when the internal pressure of seal container 4 rose, seal container 4 expanded gradually, and especially upper end plate 1 is spherical and expands.But because the steel plateform 21 of round and upper end plate 1 overlapping 22 is soldered fixing, so the thickness of slab thickening, rigidity increases, and suppresses the effect that described inside part is out of shape thereby play, and prevents the breaking of glass-dead seal 12 of airtight terminal 8.Therefore, for the refrigeration agent of the high pressure of the HFC32 that comprises R410A etc., also can obtain enough compressive strengths seal container 4.
In addition, when dull and stereotyped 21 thickness is not made thickness than upper end plate 1 when thick, self produce distortion because of dull and stereotyped 21, so can not give full play to the effect that the glass-dead seal 12 that prevents airtight terminal 8 is broken.In addition, overlapping 22 hour, because of this part bending, so can not give full play to the effect that the glass-dead seal 12 that prevents airtight terminal 8 is broken.This length of overlapping 22 must be longer than the thickness of slab of upper end plate 1.Which no matter upper end plate 1 and dull and stereotyped 21 make the inboard with is welded, and effect all is identical.
(embodiment 4)
Figure 12～Figure 17 represents the connecting tube portion of the turnover refrigeration agent of the embodiment of the invention 4.
As shown in figure 12, be that the discharge tube 10 as one of connecting tube that passes in and out refrigeration agents from seal container 4 is weldingly fixed on the structure of welding annular metal 23 on the upper end plate 1, in the weld part periphery.When being under pressure in seal container 4 inside, upper end plate 1 englobement.Occasion at no ring-type metal body 23, concentrate with soldering portion 24 place's tensile stresses in the hole of upper end plate 1 and split connecting discharge tube 10, but in this structure, even upper end plate 1 englobement, yet owing to can suppress near the distortion of discharge tube 10 weld parts, relax tensile stress, so can prevent that soldering portion 24 from splitting, high-pressure refrigerant is to the phenomenon of external leaks, can improve compressive strength.
In addition, in the above-described embodiments, annular metal 23 is welded on seal container 4 inside, but as shown in figure 13, also can be welded on seal container 4 outsides.In addition, the also available annular metal 23a that has as Figure 14,15 plunging of the shape of annular metal 23 constitutes.In addition, as Figure 16, shown in Figure 17,,, can further improve rigidity by at its periphery welding annular metal 23a in the discharge tube 10 weld part peripheries formation plunging portion 25 of upper end plate 1.And,, just become easy so when near annular metal 23,23a also carry out the soldering welding simultaneously, assemble because connecting tube welds with general copper brazing.
As mentioned above, constitute seal container 4, in the occasion that airtight terminal 8 and discharge tube 10 is welded on the upper end plate 1, because of upper end plate 1 distortion makes the present invention more effective greatly by housing section 2 and upper end plate 1 and lower end plate 3.In addition, if re-use high-pressure refrigerant HFC32 or comprise its such high pressure mix refrigerant of R410A, then more produce effect.
(embodiment 5)
Figure 18 represents the connecting tube portion of the turnover refrigeration agent of the embodiment of the invention 5.That is, on the par 16 of seal container 4 (upper end plate 1), offer as the identical of connecting tube or than its little hole 26 with discharge tube 10 internal diameters, on the par 16 corresponding that discharge tube end face 10a welding is fixing with hole 26.As welding method, carry out the method for silver brazing welding in addition, for example, be pressed on the par 16 discharge tube 10 made of copper and turn-on current, make the copper of discharge tube 10 be diffused in the diffusion welding connection of welding on the seal container 4 of steel, compare with the welding method of soldering etc., Yin Wendu rises and reduces and can increase the intensity of pipe.
When seal container 4 inside are subjected to bigger pressure, upper end plate 1 englobement.If the position of the welded joint of discharge tube 10 resembles the inboard that is in the hole the prior art, because of upper end plate 1 englobement, welded joint just is subjected to the tensile stress to the direction of splitting, but because the position of the welded joint of discharge tube end face 10a is different from prior art, be in the surface of upper end plate 1, and be not subjected to stress at draw direction,, can improve the compressive strength of seal container 4 so can not produce crack etc.Enlarge welding the discharge tube end face 10a that fixes a side, and increase the diameter in the hole 26 of upper end plate 1, can reduce the resistance of refrigeration agent stream with the upper end plate 1 of discharge tube 10.
(embodiment 6)
Figure 19 represents the connecting tube portion of the turnover refrigeration agent of the embodiment of the invention 6.Promptly, it is identical or than its little hole 26 to offer internal diameter with discharge tube 10 on the par 16 of seal container 4 (upper end plate 1), and it is identical or than its big slightly recess 27 that the periphery in this hole 26 is formed external diameter with discharge tube 10, insert discharge tube end 10b at this recess 27, weld fixing with methods such as solderings the periphery of discharge tube end 10b and two sides of discharge tube end face 10a.
In said structure, when being subjected to bigger pressure in seal container 4 inside, upper end 1 englobement.If the position of the welded joint of discharge tube 10 resembles the prior art inboard in the hole, because of upper end plate 1 englobement, welded joint just is subjected to the tensile stress to the direction of splitting, but the position of welded joint is in the periphery of discharge tube end 10b and two sides of discharge tube end face 10a, although so be subjected to tensile stress in the periphery of discharge tube end 10b, even on the weld part of discharge tube end face 10a, crackle can not become greatly yet, can guarantee tightness.In addition, in the stressed occasion of discharge tube 10, though be subjected to flexural stress at weld part since the periphery supporting of the discharge tube end 10b that inserts recess 27 it, so discharge tube end face 10a is not subjected to tensile stress, can obtain the enough intensity of welded joint.
In addition, in embodiment 5,6, also constitute seal container with housing section and end plate portion up and down, when being used in the occasion of in end plate portion, welding airtight terminal and connecting tube, because of distortion being increased in the hole of offering in the end plate portion more than 2, so by being more effective with above-mentioned welding method, if be applicable to general refrigeration agents such as R22, then can reduce thickness of slab, material of seal container etc., can realize reducing cost, and,, then can more effectively improve the compression resistance of seal container if use the HFC32 of high-pressure refrigerant or comprise its mix refrigerant R410A etc.
From the foregoing description explanation, learn, adopt the present invention, since be will surround airtight terminal weld part, the member that improves the seal container rigidity be welded on the structure on the seal container, even produce distortion so be in the seal container of high pressure, welding airtight terminal in the seal container, yet the member that the rigidity that makes airtight terminal weld part periphery improves also can suppress the airtight terminal distortion, can prevent the breaking of glass-dead seal of airtight terminal, thereby realize the big hermetic compressor of compressive strength.
In addition, by the annular metal contact welding is connected on the seal container, whole face is weldingly fixed on the seal container, and the distortion rigidity of end plate just can effectively suppress the distortion of airtight terminal, realizes the big hermetic compressor of compressive strength.
In addition, the present invention is provided with the hole of plunging on seal container, the described airtight terminal of seal welding on this hole, and then the airtight terminal peripheral portion can prevent breaking of glass-dead seal because of plunging is difficult to distortion, thereby improves compressive strength.
In addition, the present invention in case with the airtight terminal seal welding on sheet material, on described seal container, has overlapping ground with this sheet material seal welding, produce distortion even become the end plate of high pressure, welding airtight terminal in the seal container, yet because of the rigidity of overlapping portion big, so can suppress the distortion of airtight terminal, can prevent that the glass-dead seal of airtight terminal from breaking, thereby can realize the hermetic compressor that compressive strength is big.
In addition, constitute seal container by the housing section and the end plate portion of sealing the housing section opening, in described end plate portion in the structure of seal welding airtight terminal, as mentioned above, the present invention is effective especially.
In addition, the present invention is by the weld part periphery welding annular metal at connecting tube (discharge tube and suction pipe), reduce to produce the tensile stress of distortion, can improve the compressive strength of the attachment portion of connecting tube because of sealed container interior pressure makes the weld part of connecting tube.In addition, by the two side's solderings welding with connecting tube and annular metal, assembling just easily.
In addition, the present invention offers identical with the connecting tube internal diameter on the par of seal container or than its little hole, and fixed the connecting tube end face in seal container outer surface welding, when when sealed container interior is subjected to high pressure, because of weld part is not subjected to bigger tensile stress, so can improve the compressive strength of seal container.
In addition, structure of the present invention is the periphery formation recess with the hole of seal container, insert the connecting tube end and weld fixing at this recess, weld by two sides the end face of connecting tube and end peripheral part fixing, when sealed container interior is subjected to high pressure, because of have 2 welded joint in different directions, break so be difficult to produce, can improve the compressive strength of seal container, and, even also can provide hermetic compressor when pipe arrangement is subjected to brute force with sufficient intensity.
In addition, seal container of the present invention is made of foregoing housing section and end plate portion, is welding in the end plate portion under the situation of airtight terminal and connecting tube, because the distortion of end plate portion is big, so described invention is more effective.
In addition, the refrigeration agent of usefulness is high-pressure refrigerant HFC32 or when comprising its mix refrigerant, the present invention is more effective.
Claims (7)
1. hermetic compressor, set motor in the inside of seal container and with this electric motor driven compressing mechanism, it is characterized in that, on the par of described seal container, offer with the inside of described seal container connect with the outside, identical or with the connecting tube internal diameter of turnover refrigeration agent than its little hole, for making the corresponding end face that is welded with described connecting tube at the seal container outer surface of described connecting tube with this hole.
2. hermetic compressor as claimed in claim 1 is characterized in that, what enlarge described connecting tube fixes the end face of a side with described seal container welding, does the aperture of described seal container identical or littler than it with the internal diameter of the expansion section of described connecting tube.
3. hermetic compressor as claimed in claim 1 or 2 is characterized in that, by Diffusion Welding, is welded with described connecting tube on described seal container.
4. hermetic compressor, set motor in the inside of seal container and with this electric motor driven compressing mechanism, it is characterized in that, on described seal container, offer with the inside of described seal container connect with the outside, identical or with the connecting tube internal diameter of turnover refrigeration agent than its little hole, and it is identical or than its big slightly recess that the periphery in this hole is formed external diameter with described connecting tube, does welding in the end that this recess inserts described connecting tube and fix.
5. hermetic compressor as claimed in claim 4 is characterized in that, by the soldering welding, and the end face of the fixing described connecting tube of welding and two sides of end periphery on described seal container.
6. as each described hermetic compressor in the claim 1,2,4 or 5, it is characterized in that, constitute described seal container, in described end plate portion, be welded with described airtight terminal and described connecting tube by the housing section and the end plate portion of sealing this housing section opening.
7. as each described hermetic compressor in the claim 1,2,4 or 5, it is characterized in that described refrigeration agent uses HFC32 or comprises its mix refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03145289 CN1277055C (en) | 1998-12-15 | 1998-12-15 | Closed type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03145289 CN1277055C (en) | 1998-12-15 | 1998-12-15 | Closed type compressor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981260950A Division CN1166864C (en) | 1998-12-15 | 1998-12-15 | Close type compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1474058A CN1474058A (en) | 2004-02-11 |
| CN1277055C true CN1277055C (en) | 2006-09-27 |
Family
ID=34155884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03145289 Expired - Fee Related CN1277055C (en) | 1998-12-15 | 1998-12-15 | Closed type compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1277055C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107304766A (en) * | 2016-04-25 | 2017-10-31 | 上海日立电器有限公司 | Compressor |
| CN107514364B (en) * | 2016-06-18 | 2021-12-07 | 上海海立电器有限公司 | A kind of compressor |
-
1998
- 1998-12-15 CN CN 03145289 patent/CN1277055C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1474058A (en) | 2004-02-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 Termination date: 20101215 |