CN201159151Y - Closed compressor - Google Patents
Closed compressor Download PDFInfo
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- CN201159151Y CN201159151Y CNU2007201997198U CN200720199719U CN201159151Y CN 201159151 Y CN201159151 Y CN 201159151Y CN U2007201997198 U CNU2007201997198 U CN U2007201997198U CN 200720199719 U CN200720199719 U CN 200720199719U CN 201159151 Y CN201159151 Y CN 201159151Y
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Abstract
The utility model provides a hermetical compressor, which comprises an electric unit and a compression unit, wherein the electric unit is provided with a stator and a rotor, and the compression unit is driven by the electric unit, the compression unit comprises a shaft, an operating cylinder body, a main bearing, a piston, a connecting mechanism and a thrust ball bearing, wherein the shaft is provided with a main shaft portion and an eccentric shaft portion, the main bearing is formed on the operating cylinder body and is in pivot bearing the main shaft portion of the shaft, the piston reciprocates, the connecting mechanism connects the piston with the eccentric shaft portion, the thrust ball bearing is provided with a plurality of balls and a seat portion to retain the balls, and the seat portion is made of polymerized substances of diaminobutane and adipic acid.
Description
Technical field
The utility model relates to the hermetic type compressor that is used for fridge-freezer etc.
Background technique
In recent years, about being used in the hermetic type compressor of fridge-freezer etc., be required high efficiency in order to reduce power consumption, and be required that low noiseization also has high reliabilityization.
The structure that existing this hermetic type compressor forms is to be that purpose adopts thrust ball bearing and axle can rotate freely (for example, with reference to patent documentation 1,2) with respect to main bearing to raise the efficiency.
Below, with reference to the above-mentioned existing hermetic type compressor of description of drawings.
Fig. 9 is the longitudinal section of patent documentation 1 described existing hermetic type compressor, Figure 10 be Fig. 9 want portion's enlarged view.
Among Fig. 9 and Figure 10, in seal container 1, take in electrodynamic element 2 that constitutes by stator 52 and rotor 54 and the compression unit 4 that drives by these electrodynamic element 2 rotations respectively, at bottom storage lubricant oil 6.Electrodynamic element 2 and compression unit 4 are assembled into one and form compressing mechanism 8, and this compressing mechanism 8 utilizes a plurality of helical springs (not shown) yielding support in seal container 1.
Form pressing chamber 22 cylindraceous in the working cylinder 20 that constitutes compression unit 4, piston 24 back and forth embeds in the pressing chamber 22 freely.Fixed main shaft holds 26 on the top of working cylinder 20, forms thrust face 28 above main bearing 26.
Recess in the bottom 55 of rotor 54 is to form plane, hole 58 in the countersink 56, forms thrust face 28 in main bearing 26 upper ends.Configuration is used for the thrust ball bearing 60 of supporting axle 30 between plane, hole 58 in these countersinks 56 and the thrust face 28.
Thrust ball bearing 60 possesses a plurality of balls 62, keeps the seat portion 64 of ball 62 and is configured in top race 66 and the bottom race 68 of ball about in the of 62 respectively.And top race 66 joins with plane, hole 58, and bottom race 68 joins with thrust face 28.
The seat portion 64 of thrust ball bearing 60 is formed by the polymer (hereinafter referred to as " polymer A ") that hexamethylene diamine and adipic acid polycondensation are formed.
Below, the hermetic type compressor about constituting as described above illustrates its action.
If utilize external power supply to electrodynamic element 2 energisings, then rotor 54 rotations, thereupon, axle 30 rotations.Then, rotatablely moving of eccentric axial portion 36 passes to piston 24 via connect mechanism 44.Then, piston 24 moves back and forth in pressing chamber 22, thus the compressed action that compression unit 4 is stipulated.
Thereby refrigerant gas sprays to cooling system after being inhaled into, compressing in pressing chamber 22 from cooling system (not shown) again.
At this moment, fuel supply line 42 relies on centrifugal force to draw lubricant oil 6, lubricated each slide part (not shown).And the part of lubricant oil 6 is supplied with to thrust face 28 from spiral chute 32, lubricated thrust ball bearing 60.
Thereby the axle 30 and the weight of rotor 54 is by thrust ball bearing 60 supportings, and during axle 30 rotations, ball 62 is in top race 66 and 68 rollings of bottom race.Thereby the torque that axle 30 is rotated by thrust ball bearing 60 supportings is compared with thrust slide bearing and is diminished.Thereby, can reduce the loss on the thrust-bearing, can reduce input, therefore can carry out compressed action efficiently.
In addition, other hermetic type compressors about different with the hermetic type compressor of above-mentioned explanation in the above-mentioned existing hermetic type compressor describe with reference to accompanying drawing.
Figure 11 is the longitudinal section of patent documentation 2 described existing hermetic type compressors, Figure 12 be Figure 11 want portion's enlarged view.
Among Figure 11 and Figure 12, in seal container 102, take in electrodynamic element 108 that constitutes by stator 104 and rotor 106 and the compression unit 110 that drives by these electrodynamic element 108 rotations respectively.And, the bottom storage lubricant oil 112 in seal container 102.In addition, electrodynamic element 108 and compression unit 110 are assembled into one and form compressing mechanism 114.Also have, this compressing mechanism 114 utilizes a plurality of helical spring 116 yielding supports in seal container 102.
In addition, the oil supply 152 that the oil feeding mechanism 150 that the lubricant oil 112 in axle 126 has an end and is stored in seal container 102 is communicated with, a part of lubricant oil 112 that will utilize oil feeding mechanism 150 to draw on main shaft part 120 are supplied with to upper-end surface 144.
At this, electrodynamic element 108 is made of stator 104 that is fixed on working cylinder 132 belows and the rotor 106 that utilizes hot charging etc. to be fixed on the main shaft part 120.
And thrust ball bearing 146 possesses a plurality of balls 160 as shown in figure 12, keeps the seat portion 162 of ball 160 and is configured in top race 164 and the bottom race 166 of ball about in the of 160 respectively.And the top race of top race 164 and lip part 122 plane 142 that falls joins, and bottom race 166 joins with upper-end surface 144.
The seat portion 162 of this thrust ball bearing 146 is also formed by the polymer A that hexamethylene diamine and adipic acid polycondensation are formed described in the patent documentation 1.
Below, the hermetic type compressor about constituting as described above illustrates its action.
If utilize external power supply (not shown) to electrodynamic element 108 energisings, then rotor 106 rotations, thereupon, axle 126 rotations.And the motion of eccentric axial portion 124 passes to piston 136 via connect mechanism 138.Thereby piston 136 moves back and forth in pressing chamber 130, thus the compressed action that compression unit 110 is stipulated.
Thereby refrigerant gas sprays to cooling system after being inhaled into, compressing in pressing chamber 130 from cooling system (not shown) again.
At this moment, the oil feeding mechanism 150 of axle 126 has drawn lubricant oil 112, lubricated each slide part (not shown).Have, the part of lubricant oil 112 is supplied with to upper-end surface 144 from oil supply 152 again, lubricated thrust ball bearing 146.
Thereby the axle 126 and the weight of rotor 106 is by thrust ball bearing 146 supportings, and during axle 126 rotations, ball 160 is in top race 164 and 166 rollings of bottom race.Thereby the torque that axle 126 is rotated by thrust ball bearing 146 supportings is compared with thrust slide bearing and is diminished.Thereby, can reduce the loss on the thrust-bearing, can reduce input, therefore can carry out compressed action efficiently.
But, constitute by above-mentioned existing shown in patent documentation 1 and the patent documentation 2, in the too harsh running that the temperature in long such, the seal container 1,102 of for example continuous operation time rises, input increase sometimes.So, finding that to importing that big hermetic type compressor disintegrates the plane of trajectory orbital side of rolling at the ball 62,160 of top race 66,164 and bottom race 68,166 produces attachment, also produces suspended matter in lubricant oil 6,112 when investigating the cause.
The result who analyzes the composition of this attachment and suspended matter is that these compositions are consistent with the composition of the seat portion 64,162 of thrust ball bearing 60,146.Thereby, distinguish that this attachment and suspended matter are the low polymers (hereinafter referred to as " oligomer ") from seat portion 64,162 wash-outs.
In addition, seat portion 64,162 is put into sealed seal container with refrigeration agent and lubricant oil, be warmed to the sealed tube test of high temperature.In sealing pipe test, also confirmed similarly that with the component analysis result of above-mentioned attachment and suspended matter oligomer is eluted in the lubricant oil.
On the other hand as can be known, short at continuous operation time for example, be in the hermetic type compressor that turns round under the not high operating condition of temperature seal container 1,102 in, import and can not increase, do not produce aforesaid oligomer.Thereby find, owing to produce oligomer, thus the input of hermetic type compressor increases.
That is, when thinking the hermetic type compressor running, the oligomer that adheres in the plane of trajectory orbital side of top race 66,164 and bottom race 68,166 becomes resistance, and ball 62,160 rolls difficult.In addition, the input of hermetic type compressor increases, and the oligomer of wash-out is drunk up with lubricant oil 6,112 via fuel supply line 42 and oil feeding mechanism 150 in the lubricant oil 6,112.If produce such situation, then each slide part at axle 30,126 and main bearing 26,134 etc. adheres to oligomer, thereby slip resistance increases.Distinguish that consequently heating value increases, the temperature in the seal container 1,102 raises, and then the reliability of hermetic type compressor might reduce.
Patent documentation 1: the spy opens clear 61-53474 communique
Patent documentation 2: the spy opens the 2005-127305 communique
The model utility content
The utility model has solved the problems referred to above, produces oligomer, suppresses the high efficiency of input increase and the hermetic type compressor of high reliability from seat portion even also suppress in the running that provides a kind of temperature in closed compressor to rise.
Hermetic type compressor of the present utility model, it is characterized in that, in seal container, store lubricant oil, and contain electrodynamic element that possesses stator and rotor and the compression unit that drives by described electrodynamic element, described compression unit comprises the axle with main shaft part and eccentric axial portion, form the working cylinder of pressing chamber, be formed on the described working cylinder and the main bearing of the described main shaft part of a described axle of supporting, pistons reciprocating in described pressing chamber, the connect mechanism and the thrust ball bearing that link described piston and described eccentric axial portion, described thrust ball bearing possesses a plurality of balls and keeps the seat portion of described ball, and described seat portion is formed by polymer.
That is, hermetic type compressor of the present utility model, the seat portion of thrust ball bearing is that material forms with the polymer (hereinafter referred to as " polymer " B) that the polycondensation by diaminobutane and adipic acid produces.Excellent on heat resistance, oil resistance, anti-refrigeration agent in this polymer B that forms seat portion, thus even the temperature of seat portion, also can prevent the wash-out oligomer from seat portion along with risings such as operating conditions.Thereby, can not exist by the oligomer of lubricant oil wash-out situation attached to the plane of trajectory orbital side of top race and bottom race, can prevent that ball from rolling and become difficult.
Consequently, hermetic type compressor of the present utility model, even under the too exacting terms that the temperature of hermetic type compressor rises, can there be the situation that is deposited in the plane of trajectory orbital side of top race and bottom race by the oligomer of lubricant oil wash-out as attachment yet, can there be the situation of generating heat owing to adhering to of oligomer yet, the increase that therefore can suppress to import can realize the hermetic type compressor of high efficiency and high reliability.
Description of drawings
Fig. 1 is the longitudinal section of the hermetic type compressor of mode of execution 1 of the present utility model.
Fig. 2 be mode of execution 1 of the present utility model hermetic type compressor want portion's enlarged view.
Fig. 3 is the longitudinal section of the rotor of mode of execution 1 of the present utility model.
Fig. 4 is the top cross-sectional view of the rotor of mode of execution 1 of the present utility model.
Fig. 5 is the longitudinal section of the hermetic type compressor of mode of execution 2 of the present utility model.
Fig. 6 be mode of execution 2 of the present utility model hermetic type compressor want portion's enlarged view.
Fig. 7 is the longitudinal section of the rotor of mode of execution 2 of the present utility model.
Fig. 8 is the top cross-sectional view of the rotor of mode of execution 2 of the present utility model.
Fig. 9 is the longitudinal section of existing hermetic type compressor.
Figure 10 be existing hermetic type compressor want portion's enlarged view.
Figure 11 is the longitudinal section of existing other hermetic type compressors.
Figure 12 be existing other hermetic type compressors want portion's enlarged view.
Among the figure: 201, the 302-seal container, 202, the 308-electrodynamic element, 204, the 310-compression unit, 206,312-lubricant oil, 208, the 314-compressing mechanism, 220, the 320-working cylinder, 222, the 322-pressing chamber, 224, the 324-piston, 226, the 326-main bearing, the 228-thrust face, 230, the 340-axle, the 232-spiral chute, 234, the 342-main shaft part, 236, the 346-eccentric axial portion, the 238-lower end, the 242-fuel supply line, 244, the 354-connect mechanism, 246-lower ending opening portion, 248-central axis, 250, the 360-winding, 251, the 304-stator, 252, the 306-rotor, 254, the 362-rotor core, 256, the 364-seam, 258,366-aluminium bar, 260,368-short-circuited conducting sleeve A, 261,370-short-circuited conducting sleeve B, 262, the 380-bottom, the 264-countersink, plane, 266-hole, 268, the 334-internal face, 270, the 384-thrust ball bearing, 272, the 386-ball, 274,388-seat portion, 276,390-top race (レ one ス), 278, the 392-bottom race, the 316-helical spring, 328-thrust groove, 330-axle center, the 332-upper-end surface, the 344-lip part, 350-oil feeding mechanism, 352-oil supply, the 382-top race plane that falls, the 385-outer side surface.
Embodiment
Below use accompanying drawing, describe about a mode of execution of the present utility model.In the following accompanying drawing, constitute in order to understand easily, each size is exaggerated expression.Have again,, therefore omit explanation sometimes for same unit mark same-sign.
(mode of execution 1)
Fig. 1 is the longitudinal section of the hermetic type compressor of mode of execution 1 of the present utility model.Fig. 2 be Fig. 1 want portion's enlarged view.
Among Fig. 1 and Fig. 2, in seal container 201, take in electrodynamic element 202 that constitutes by stator 251 and rotor 252 and the compression unit 204 that drives by these electrodynamic element 202 rotations respectively, at bottom storage lubricant oil 206.
In addition, electrodynamic element 202 and compression unit 204 are assembled into one and form compressing mechanism 208.This compressing mechanism 208 utilizes a plurality of helical springs (not shown) yielding support in seal container 201.
Fig. 3 is the longitudinal section of the rotor 252 of present embodiment 1, and Fig. 4 is the top cross-sectional view of the rotor 252 of present embodiment 1.
As shown in Figures 3 and 4, rotor 252 constitutes puts into the seam 256 of equivalent arrangements at rotor core 254 outer circumferential sides of stacked iron plate with aluminium bar 258, with the basket shape of the short-circuited conducting sleeve A260 of aluminium, two terminal shortcircuits that short-circuited conducting sleeve B261 makes this aluminium bar 258.
As Fig. 1～shown in Figure 3, the part of main bearing 226 is put into rotor 252 make them overlapping, and be provided as the countersink 264 of recess in the bottom 262 of rotor 252, thereby the length of axle 230 shortens, the height of seal container 201 is suppressed lowlyer.
The bottom 262 of rotor 252 as the countersink 264 of recess in form the plane, hole 266 of being arranged to the ring-type of approximate right angle with central axis 248.And, form the thrust face 228 of being arranged to the ring-type of approximate right angle with central axis 248 in the upper end of main bearing 226.Configuration thrust ball bearing 270 is used for supporting axle 230 between plane, hole 266 in this countersink 264 and the thrust face 228.Thrust ball bearing 270 at least a portion enter in the countersink 264, thereby it is surrounded by the internal face 268 of countersink 264 on every side, and the top becomes the cul-de-sac state.
Thrust ball bearing 270 possesses a plurality of balls 272, keeps the seat portion 274 of ball 272 and is configured in top race 276 and the bottom race 278 of ball about in the of 272 respectively.Also have, top race 276 joins with plane, hole 266, and bottom race 278 joins with thrust face 228.
Ball 272 is formed by the high carburizing and quenching Bearing Steel of wearability, and top race 276 and bottom race 278 are formed by the high heat treated carbon steel of wearability too.In addition, the seat portion 274 of thrust ball bearing 270 is formed by the polymer B that diaminobutane and adipic acid polycondensation are formed.
This polymer B forms the structure of arranging 4 methylene between amido link regularly, and crystallization speed is fast, and degree of crystallinity is also high.Specifically, degree of crystallinity is about 40～45%, heat resistance, oil resistance, anti-refrigeration agent excellence.
In addition, the manufacture method of the hermetic type compressor of explanation in the present embodiment 1 comprises the product of the finishing operation and the assembling procedure that makes as the inside drying of the hermetic type compressor of finishing product of assembling component parts and forming the product of finishing.In this assembling procedure, hermetic type compressor is heated certain hour in the constant temperature oven that is heated to temperature more than 150 ℃.Thereby seat portion 274 its mechanical properties of the thrust ball bearing 270 that is formed by polymer B etc. can form heat-staple state.
Below, the hermetic type compressor about constituting as described above illustrates its action.
If utilize external power supply (not shown) to switching on as Fig. 1～electrodynamic element 202 shown in Figure 4, then rotor 252 rotates, thereupon, and axle 230 rotations.And rotatablely moving of eccentric axial portion 236 passes to piston 224 via connect mechanism 244, thereby piston 224 carries out reciprocating action in pressing chamber 222, thus the compressed action that compression unit 204 is stipulated.
Thereby refrigerant gas sprays to cooling system after being inhaled into, compressing in pressing chamber 222 from cooling system (not shown) again.
At this moment, fuel supply line 242 1 ends are pressed into the lower end 238 of eccentric axial portion 236, and lower ending opening portion 246 is crooked on the elongation line of the central axis 248 of main shaft part 234, thereby along with the rotation of axle 230 relies on centrifugal force to draw lubricant oil 206.And, lubricant oil 206 lubricated each slide part, its part is supplied with to thrust face 228 from spiral chute 232, lubricated thrust ball bearing 270.
The axle 230 and the weight of rotor 252 is by thrust ball bearing 270 supportings, and during axle 230 rotations, and ball 272 is in top race 276 and 278 rollings of bottom race, thereby, the torques of axle 230 rotations are compared with thrust slide bearing diminished.Thereby, can reduce the loss on the thrust-bearing, can reduce input, therefore can realize high efficiency.
Next, describe about the heat on the thrust ball bearing 270.
During the hermetic type compressor running, if for example continuous operation time is long, then since electrodynamic element 202 forms by induction motor, therefore, lasting circulating current in the short-circuited conducting sleeve A260 at the aluminium bar 258 of the winding 250 of stator 251 and rotor 252 and two ends and short-circuited conducting sleeve B261.Thereby the temperature of stator 251 and rotor 252 is compared with the situation of the rotor that possesses permanent magnet and is risen to high temperature.
In addition, the running load is increasing, and the current value of circulation also becomes greatly in the electrodynamic element 202, and is same, and the temperature of stator 251 and rotor 252 rises.
The heat of said stator 251 is directly conducted or is conducted to seal container 201 via refrigerant gas to compression unit 204 and lubricant oil 206, thereby the temperature of each one of hermetic type compressor rises.
Thrust ball bearing 270 is along with the temperature of above-mentioned compression unit 204, stator 251 and rotor 252 etc. rises and the temperature rising.Have, thrust ball bearing 270 also is exposed to the low lubricant oil 206 of the high temperature that is used for lubricating supplied with from spiral chute 232 and viscosity again.
And the part of thrust ball bearing 270 is configured in the countersink 264 of rotor 252, is surrounded around it by internal face 268.Thereby, the top of thrust ball bearing 270 is the cul-de-sac state, the below forms the little space of the approximate enclosed space that is surrounded by stator 251, main bearing 226 and working cylinder 220 etc., therefore, thrust ball bearing 270 and the refrigerant gas around it are difficult to heat radiations such as other component parts, thereby temperature further rises.
Constitute the also temperature rising of seat portion 274 of thrust ball bearing 270, be difficult to heat radiation between top race 276 and the bottom race 278 owing to being sandwiched in again, thereby temperature rises owing to above-mentioned reason.
This one 274 is formed by the polymer B of heat resistance, oil resistance, anti-refrigeration agent excellence.Thereby, as mentioned above, even thereby in the countersink 264 that is difficult to the rising of heat radiation temperature, dispose the part of seat portion 274, also can prevent 274 wash-out oligomer from seat portion.And, also confirmed by experiment to prevent by the oligomer of lubricant oil 206 wash-outs plane of trajectory orbital side attached to top race 276 and bottom race 278.
In addition,, thereby can not picked up with lubricant oil 206, can not wait each slide part to adhere to oligomer at axle 230 and main bearing 226 via fuel supply line 242 owing to oligomer is not eluted in the lubricant oil 206.Consequently, confirmed that slip resistance can not increase on thrust ball bearing 270, reliability improves.
Above result thinks even also suppress the motion of the polymer B molecule of heat resistance, oil resistance, anti-refrigeration agent excellence when becoming high temperature, so can prevent the 274 wash-out oligomer from seat portion under the situation that present portion 274 forms by polymer B.Consequently, think not exist oligomer to be deposited in the situation of the plane of trajectory orbital side of top race 276 and bottom race 278, also do not have the situation of in lubricant oil 206, swimming as suspended matter as attachment.
As previously discussed, can prevent that it is difficult to prevent that thus ball 272 from rolling, and can prevent from slip resistance to be increased attached to each slide part of axle 230 and main bearing 226 etc. from thrust ball bearing 270 wash-out oligomer.Consequently, provide and suppressed the high efficiency that input increases and the hermetic type compressor of high reliability.
In addition, at least a portion at thrust ball bearing 270 is configured in the countersink 264 as recess of rotor 252, perhaps electrodynamic element 202 adopts in the formation of induction motor, even because operating condition such as continuous operation time is long or the running load is big, the temperature of thrust ball bearing 270 rises to high temperature, also because seat portion 274 is formed by polymer B, thereby can prevent the wash-out of oligomer.Thereby,, then can provide and suppress to import the high efficiency of increase and the hermetic type compressor of high reliability if adopt this thrust ball bearing 270.
In addition, hermetic type compressor then gets rusty the durability deterioration if sneak into moisture in seal container 201 in the inboard of compression unit 204 and seal container 201.In addition, hermetic type compressor is if turn round in the cooling system of packing into, and then the moisture of discharging with refrigerant gas sometimes freezes in cooling system and cooling system is sealed, and the generation cooling is bad.In order to prevent to produce this problem, with the moisture in the seal container of removing hermetic type compressor is purpose, in assembling procedure, need to implement to heat hermetic type compressor after forming the product of the finishing operation of the product of finishing at the assembling component parts and make its dry drying process.
; because seat portion 274 is formed by the polymer B of heat resistance, oil resistance, anti-refrigeration agent excellence; thereby in the drying process of dry hermetic type compressor; even be heated with the temperature more than 150 ℃; the atmosphere temperature of seat portion 274 rises to the high temperature more than 150 ℃, also can prevent the distortion of the seat portion 274 that causes owing to thermal degradation when.Thereby seat portion 274 can use the member that has been heated certain hour with the temperature more than 150 ℃, also the seat portion 274 in the hermetic type compressor of packing into can be heated with the heating-up temperature more than 150 ℃.
Owing to adopt such method, thus can prevent to produce a portion that is accompanied by 274 distortion, problems such as the decrease in efficiency based on entrance loss, noise increase, reliability decrease.
Have, the atmosphere temperature of the portion 274 of can being present reaches short time heat drying hermetic type compressor in the kiln furnace more than at least 150 ℃ again, therefore can improve the productivity in the assembling procedure.
Similarly, even the atmosphere temperature with the thrust ball bearing 270 of hermetic type compressor is under the situation of the temperature running certain hour more than 150 ℃, seat portion 274 rises to the temperature more than 150 ℃, yet, thereby can prevent 274 wash-out oligomer from seat portion owing to seat portion 274 is formed by the polymer B of heat resistance, oil resistance, anti-refrigeration agent excellence.That is, it is the member of the temperature running certain hour more than 150 ℃ that thrust ball bearing 270 can use with atmosphere temperature, can be temperature running certain hour more than 150 ℃ with atmosphere temperature with hermetic type compressor that thrust ball bearing 270 is housed also.
Owing to adopt such method, thus can prevent to produce a portion that is accompanied by 274 distortion, problems such as the decrease in efficiency based on entrance loss, noise increase, reliability decrease.
Also have, in the present embodiment 1, rise to the situation of high temperature as the temperature of thrust ball bearing 270, the long or big situation of running load is that example is illustrated with continuous operation time.But, so long as the temperature of other thrust ball bearings 270 beyond this situation rises to the situation of high temperature, then other situations can be implemented too, can prevent the 274 wash-out oligomer from seat portion.
In addition, under the situation that electrodynamic element 202 is made of the motor that has adopted permanent magnet, though compare heating with induction motor little, also can obtain same effect and effect, this is self-evident.
(mode of execution 2)
Fig. 5 is the longitudinal section of the hermetic type compressor of mode of execution 2 of the present utility model, Fig. 6 be Fig. 5 want portion's enlarged view.
Among Fig. 5 and Fig. 6, in seal container 302, take in electrodynamic element 308 that constitutes by stator 304 and rotor 306 and the compression unit 310 that drives by these electrodynamic element 308 rotations respectively, at bottom storage lubricant oil 312.
In addition, electrodynamic element 308 and compression unit 310 are assembled into one and form compressing mechanism 314.Also have, this compressing mechanism 314 utilizes a plurality of helical spring 316 yielding supports in seal container 302.
Next, the main composition about compression unit 310 describes.
Form the upper-end surface 332 of being arranged to approximate right angle with the axle center 330 of main bearing 326 going to the bottom of thrust groove 328, surround by internal face 334 around it.
On axle 340, form the eccentric axial portion 346 that forms via main shaft part 342 and lip part 344.Main shaft part 342 is bearing on the main bearing 326 and has an end along the vertical direction axle and be stored in the oil feeding mechanism 350 that the lubricant oil 312 in the seal container 302 is communicated with and will utilize a part of lubricant oil 312 that oil feeding mechanism 350 drawn oil supply 352 to upper-end surface 332 supplies on main shaft part 342.And eccentric axial portion 346 and piston 324 are linked by connect mechanism 354.
Fig. 7 is the longitudinal section of the rotor 306 of present embodiment 2, and Fig. 8 is the top cross-sectional view of the rotor 306 of present embodiment 2.
As shown in Figures 7 and 8, rotor 306 constitutes puts into the seam 364 of equivalent arrangements at rotor core 362 outer circumferential sides of stacked iron plate with aluminium bar 366, makes the basket shape of two terminal shortcircuits with short-circuited conducting sleeve A368, the short-circuited conducting sleeve B370 of aluminium.
Form the top race of being arranged to approximate right angle with the axle center 330 of main shaft part 342 plane 382 that falls in the bottom 380 of the lip part 344 of axle 340.And falling at top race, configuration thrust ball bearing 384 is used for supporting axle 340 between the upper-end surface 332 of plane 382 and main bearing 362.Thrust ball bearing 384 enters in the thrust groove 328 of main shaft part 342, and around at least a portion of the outer side surface 385 of thrust ball bearing 384 peripheries was surrounded by at least a portion of the internal face 334 of thrust groove 328, the below became the cul-de-sac state.
At least a portion of thrust ball bearing 384 is put into thrust groove 328, thereby the position of eccentric axial portion 346 can be suppressed lower.Thus, the height of seal container 301 can be suppressed lower.
In addition, in the thrust groove 328, because the part in thrust ball bearing 384 outsides surrounds by the part of thrust groove 328 and main bearing 326, thereby the noise that can reduce on the thrust ball bearing 384 transmits outside thrust groove 328.Meanwhile, thrust groove 328 also realizes storing the effect of lubricant oil, thereby thrust groove 328 becomes the structure that can carry out swimmingly to thrust ball bearing 384 fuel feeding.
This polymer B as illustrated in the enforcement mode 1, forms the structure of arranging 4 methylene between amido link regularly, and crystallization speed is fast, and degree of crystallinity is also high.Specifically, degree of crystallinity is about 40～45%, heat resistance, oil resistance, anti-refrigeration agent excellence.
In addition, the manufacture method of the hermetic type compressor of explanation in the present embodiment 2 comprises the product of the finishing operation and the assembling procedure that makes as the inside drying of the hermetic type compressor of finishing product of assembling component parts and forming the product of finishing.In this assembling procedure, hermetic type compressor is heated certain hour in the constant temperature oven that is heated to temperature more than 150 ℃.Thereby seat portion 388 its mechanical properties of the thrust ball bearing 384 that is formed by polymer B etc. can form heat-staple state.
Below, the hermetic type compressor about constituting as described above illustrates its action.
If utilize external power supply (not shown) to switching on as Fig. 5～electrodynamic element 308 shown in Figure 8, then rotor 306 rotates, thereupon, and axle 340 rotations.Then, rotatablely moving of eccentric axial portion 346 passes to piston 324 via connect mechanism 354, thereby piston 324 moves back and forth in pressing chamber 322, thus the compressed action that compression unit 310 is stipulated.
Thereby refrigerant gas sprays to cooling system after being inhaled into, compressing in pressing chamber 322 from cooling system (not shown) again.
At this moment, axle 340 utilizes the oil feeding mechanism 350 of main shaft part to draw lubricant oil 312.And, lubricant oil 312 lubricated each slide part, its part is supplied with to upper-end surface 332 from oil supply 352, lubricated thrust ball bearing 384.
Next, describe about the heat on the thrust ball bearing 384.
During the hermetic type compressor running, if for example continuous operation time is long, then since electrodynamic element 308 forms by induction motor, therefore, lasting circulating current in the short-circuited conducting sleeve A368 at the aluminium bar 366 of the winding 360 of stator 304 and rotor 306 and two ends and short-circuited conducting sleeve B370.Thereby the temperature of stator 304 and rotor 306 is compared with the situation of the rotor that possesses permanent magnet and is risen to high temperature.
In addition, the running load is increasing, and the current value of circulation also becomes greatly in the electrodynamic element 308, and is same, and the temperature of stator 304 and rotor 306 rises.
The heat of said stator 304 is directly transmitted to seal container 302 to 312 conduction of compression unit 310 and lubricant oil or via refrigerant gas, thereby the temperature of each one of hermetic type compressor rises.
And the part of thrust ball bearing 384 is configured in the thrust groove 328 of main bearing 326.And, surround by the internal face 334 of thrust groove 328 around the outer side surface 385 of thrust ball bearing 384, and the below being the cul-de-sac state, the top forms the little space of the approximate enclosed space that is surrounded by lip part 344 and working cylinder 320 etc.Owing to become this formation, thereby thrust ball bearing 384 and the refrigerant gas around it are difficult to heat radiation, thereby temperature rises further.
Constitute the also temperature rising of seat portion 388 of thrust ball bearing 384, be difficult to heat radiation between top race 390 and the bottom race 392 owing to being sandwiched in again, thereby temperature rises owing to above-mentioned reason.
This one 388 is formed by the polymer B of heat resistance, oil resistance, anti-refrigeration agent excellence.Thereby, as mentioned above, even thereby in the thrust groove 328 that is difficult to the rising of heat radiation temperature, dispose the part of seat portion 388, also can prevent 388 wash-out oligomer from seat portion.And, also confirmed by experiment to prevent by the oligomer of lubricant oil 312 wash-outs plane of trajectory orbital side attached to top race 390 and bottom race 392.
In addition,, thereby can not picked up with lubricant oil 312, can not adhered to oligomer at each slide part of axle 340 and main bearing 326 etc. via oil feeding mechanism 350 owing to oligomer is not eluted in the lubricant oil 312.Consequently, confirmed that slip resistance can not increase on thrust ball bearing 384, reliability improves.
Above result thinks even also suppress the motion of the polymer B molecule of heat resistance, oil resistance, anti-refrigeration agent excellence when becoming high temperature, so can prevent the 388 wash-out oligomer from seat portion under the situation that present portion 388 forms by polymer B.Consequently, not think to exist oligomer to be deposited in the situation of the plane of trajectory orbital side of top race 390 and bottom race 392, also can not have the situation of in lubricant oil 312, swimming as suspended matter as attachment.
As previously discussed, can prevent that it is difficult to prevent that thus ball 386 from rolling, and can prevent from slip resistance to be increased attached to each slide part of axle 340 and main bearing 326 etc. from thrust ball bearing 384 wash-out oligomer.Consequently, can provide and suppressed the high efficiency that input increases and the hermetic type compressor of high reliability.
In addition, at least a portion at thrust ball bearing 384 is configured in the thrust groove 328 of main bearing 326, perhaps electrodynamic element 308 adopts in the formation of induction motor, even because operating condition such as continuous operation time is long or the running load is big, the temperature of thrust ball bearing 384 rises to high temperature, also because seat portion 388 is formed by polymer B, thereby can prevent the wash-out of oligomer.Thereby,, then can provide and suppress to import the high efficiency of increase and the hermetic type compressor of high reliability if adopt this thrust ball bearing 384.
In addition, hermetic type compressor then gets rusty the durability deterioration if sneak into moisture in seal container 302 in the inboard of compression unit 310 and seal container 302.In addition, hermetic type compressor is if turn round in the cooling system of packing into, and then the moisture of discharging with refrigerant gas sometimes freezes in cooling system and cooling system is sealed, and the generation cooling is bad.In order to prevent to produce this problem, with the moisture in the seal container of removing hermetic type compressor is purpose, in assembling procedure, need to implement to heat hermetic type compressor after forming the product of the finishing operation of the product of finishing at the assembling component parts and make its dry drying process.
; because seat portion 388 is formed by the polymer B of heat resistance, oil resistance, anti-refrigeration agent excellence; thereby in the drying process of dry hermetic type compressor; even be heated with the temperature more than 150 ℃; the atmosphere temperature of seat portion 388 rises to the high temperature more than 150 ℃, also can prevent the distortion of the seat portion 388 that causes owing to thermal degradation when.Thereby seat portion 388 can use the member that has been heated certain hour with the heating-up temperature more than 150 ℃, also the seat portion 388 in the hermetic type compressor of packing into can be heated with the heating-up temperature more than 150 ℃.
Owing to adopt such method, thus can prevent to produce a portion that is accompanied by 388 distortion, problems such as the decrease in efficiency based on entrance loss, noise increase, reliability decrease.
Have, the atmosphere temperature of the portion 388 of can being present reaches short time heat drying hermetic type compressor in the kiln furnace more than at least 150 ℃ again, therefore can improve the productivity in the assembling procedure.
Similarly, even the atmosphere temperature with the thrust ball bearing 384 of hermetic type compressor is under the situation of the temperature running certain hour more than 150 ℃, seat portion 388 rises to the temperature more than 150 ℃, yet, thereby can prevent 388 wash-out oligomer from seat portion owing to seat portion 388 is formed by the polymer B of heat resistance, oil resistance, anti-refrigeration agent excellence.That is, it is the member of the temperature running certain hour more than 150 ℃ that thrust ball bearing 384 can use with atmosphere temperature, can be temperature running certain hour more than 150 ℃ with atmosphere temperature with hermetic type compressor that thrust ball bearing 384 is housed also.
Owing to adopt such method, thus can prevent to produce a portion that is accompanied by 388 distortion, problems such as the decrease in efficiency based on entrance loss, noise increase, reliability decrease.
Also have, in the present embodiment 2, rise to the situation of high temperature as the temperature of thrust ball bearing 384, the long or big situation of running load is that example is illustrated with continuous operation time.But, so long as the temperature of other thrust ball bearings 384 beyond this situation rises to the situation of high temperature, then other situations can be implemented too, can prevent the 388 wash-out oligomer from seat portion.
In addition, even the part in the outside of thrust ball bearing 384 is surrounded by the part of clutch release slave cylinder 320, also can obtain same effect and effect, this is self-evident.
In addition, under the situation that electrodynamic element 308 is made of the motor that has adopted permanent magnet, though compare heating with induction motor little, also can obtain same effect and effect, this is self-evident.
Utilizability on the industry
As previously discussed, hermetic type compressor of the present utility model utilizes diaminobutane and adipic acid The polymer that polycondensation forms forms seat section, has suppressed high efficiency and height that input increases thereby can provide The hermetic type compressor of reliability. Thereby, can be applicable to headed by the refrigerating plants such as freezing-cooling storeroom The purposes of vending machine, refrigerated display case, dehumidifier etc. in and play a role.
Claims (8)
1. hermetic type compressor, it is characterized in that, in seal container, store lubricant oil, and contain electrodynamic element that possesses stator and rotor and the compression unit that drives by described electrodynamic element, described compression unit comprises the axle with main shaft part and eccentric axial portion, form the working cylinder of pressing chamber, be formed on the described working cylinder and the main bearing of the described main shaft part of a described axle of supporting, pistons reciprocating in described pressing chamber, the connect mechanism and the thrust ball bearing that link described piston and described eccentric axial portion, described thrust ball bearing possesses a plurality of balls and keeps the seat portion of described ball, and described seat portion is formed by polymer.
2. hermetic type compressor according to claim 1 is characterized in that, described axle is at the fixing described rotor of described main shaft part hot charging, and described thrust ball bearing is arranged between described rotor and the described main shaft part.
3. hermetic type compressor according to claim 2 is characterized in that, at least a portion of described thrust ball bearing is configured in the countersink as recess of described rotor.
4. hermetic type compressor according to claim 1 is characterized in that, described beam warp forms described eccentric axial portion by described main shaft part and lip part, and described thrust ball bearing is configured between the upper-end surface of described lip part and described main bearing.
5. hermetic type compressor according to claim 4 is characterized in that at least a portion in the outside of described thrust ball bearing is surrounded by at least a portion of described working cylinder or described main bearing.
6. according to any described hermetic type compressor in the claim 1～5, it is characterized in that described electrodynamic element is an induction motor.
7. according to any described hermetic type compressor in the claim 1～5, it is characterized in that described seat portion is made of the member that has heated certain hour with the heating-up temperature more than 150 ℃.
8. according to any described hermetic type compressor in the claim 1～5, it is characterized in that described thrust ball bearing is a temperature running certain hour more than 150 ℃ with atmosphere temperature.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006325197 | 2006-12-01 | ||
| JP2006325197 | 2006-12-01 | ||
| JP2007025026 | 2007-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159151Y true CN201159151Y (en) | 2008-12-03 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101962155A Pending CN101191475A (en) | 2006-12-01 | 2007-11-30 | Hermetic compressor and method of manufacturing the same |
| CNU2007201997198U Expired - Fee Related CN201159151Y (en) | 2006-12-01 | 2007-11-30 | Closed compressor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101962155A Pending CN101191475A (en) | 2006-12-01 | 2007-11-30 | Hermetic compressor and method of manufacturing the same |
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| Country | Link |
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| CN (2) | CN101191475A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104169580B (en) * | 2012-04-12 | 2017-02-22 | 松下电器产业株式会社 | Hermetic compressor and refrigeration device comprising same |
| CN104179662B (en) * | 2014-09-11 | 2017-02-01 | 荣成炭谷有限公司 | Air compressor and manufacturing method thereof |
| CN109139418A (en) * | 2018-11-14 | 2019-01-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Cylinder block and compressor |
-
2007
- 2007-11-30 CN CNA2007101962155A patent/CN101191475A/en active Pending
- 2007-11-30 CN CNU2007201997198U patent/CN201159151Y/en not_active Expired - Fee Related
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|---|---|
| CN101191475A (en) | 2008-06-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20091230 |