CN202926640U - Automatic liquid spraying structure of scroll compressor - Google Patents
Automatic liquid spraying structure of scroll compressor Download PDFInfo
- Publication number
- CN202926640U CN202926640U CN 201220532914 CN201220532914U CN202926640U CN 202926640 U CN202926640 U CN 202926640U CN 201220532914 CN201220532914 CN 201220532914 CN 201220532914 U CN201220532914 U CN 201220532914U CN 202926640 U CN202926640 U CN 202926640U
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- spring
- spool
- cylindrical shell
- liquid
- cylindrical body
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Abstract
The utility model discloses an automatic liquid spraying structure of a scroll compressor. The automatic liquid spraying structure comprises an upper cover, a liquid spraying pipe, a fixed vortex, a liquid spraying channel, a connecting pipe and a liquid spraying mechanism, wherein the liquid spraying pipe enters a scroll compressor through an inlet hole of the upper cover, the upper end of the liquid spraying pipe is connected with a liquid refrigerant, the liquid spraying channel is arranged on a fixed vortex plate, the liquid spraying mechanism comprises a locating pin, a spring, a valve core and a plugging pin which are sequentially arranged in a barrel body, an upper connecting hole and a lower connecting hole are formed in the barrel body, an orifice is formed in the middle of the valve core, the locating pin and the plugging pin are fixedly connected with the barrel body, the left end of the spring is connected in a fixing trough of the locating pin, the right end of the spring is connected in a rotating trough of the valve core, the valve core is capable of rotating in the barrel body, the center line of the orifice in the middle of the valve core is vertical to the center line of the upper connecting hole and the lower connecting hole of the barrel body, and the right end of the valve core supports against the left end of the plugging pin. The automatic spraying structure of the scroll compressor has the advantages that no control loop is needed for the external part of the compressor, thus the use is simple; and meanwhile, the refrigerant is separated from the spring, thus the repetitive movements of the spring are avoided, and the service life of the liquid spraying structure is prolonged.
Description
Technical field
The utility model belongs to the scroll compressor field, relates in particular to the scroll compressor that needs Liquid injection cooling due to excessive discharge temperature.
Background technique
R32 refrigerant scroll compressor and heat pump scroll compressor exist the problem of excessive discharge temperature under some operating mode.And the fault that excessive discharge temperature can cause that seal ring melts, refrigeration oil is deteriorated, bearing wear etc. causes compressor to wrack.Therefore suppressing compressor exhaust temperature too high is a major issue of scroll compressor exploitation.Particularly for R32 refrigerant scroll compressor, because the character of refrigerant itself has determined under identical operating mode, its delivery temperature is higher than R22, R410A refrigerant scroll compressor, therefore controlling its delivery temperature in suitable scope, is the primary technical problem of R32 refrigerant scroll compressor exploitation.
patent 201210277559.X discloses and has a kind ofly used circular bimetallic strip as the automatic liquid-spraying scroll compressor of action element, use the hydrojet technology to solve the problem of scroll compressor excessive discharge temperature, and realized that whether compressor control hydrojet automatically according to delivery temperature, its deficiency is that bimetallic strip directly contacts with the low temperature refrigerant that attracts from condenser, thereby cooling rapidly, and seal the hydrojet passage, and then heating rapidly under the effect of delivery temperature, open the hydrojet passage, and then cause the bimetallic strip frequent movement, thereby reduced the working life of hydrojet structure.
Summary of the invention
The purpose of this utility model is to provide a kind of need the to control scroll compressor take R32 as refrigerant of delivery temperature or the hydrojet structure of heat pump type compressor.
the technical solution of the utility model is: a kind of automatic liquid-spraying structure of scroll compressor, comprise upper cover, liquid-spraying pipe and hydrojet passage, liquid-spraying pipe by on the hole that enters that covers enter scroll compressor, the liquid-spraying pipe upper end connects liquid refrigerants, the hydrojet passage is being decided on the vortex disk body, it is characterized in that described automatic liquid-spraying structure also comprises connecting tube and hydrojet mechanism, describedly decide to have on vortex the hole that hole that the hydrojet passage is connected with connecting tube and hydrojet passage are communicated with compression chamber, described hydrojet mechanism is by cylindrical shell, spool, spring, locating stud and shutoff pin form, have attachment hole and lower attachment hole on described cylindrical shell barrel, the center line of upper attachment hole and lower attachment hole overlaps, the upper attachment hole fixed seal connection of the lower end of liquid-spraying pipe and cylindrical shell, the lower attachment hole fixed seal connection of the upper end of described connecting tube and cylindrical shell, the lower end of connecting tube with decide vortex on be communicated with connecting tube the hole be tightly connected, described locating stud is the ladder cylindrical body, the external diameter of the large end of ladder cylindrical body matches with the internal diameter of cylindrical shell, ladder cylindrical body small end is the cylindrical body that has lacked 1/3 circumference, ladder cylindrical body small end has fixed card slot, fixed card slot is offered along the small end end face diameter, fixed card slot is vertical with the cylindrical straight flange that has lacked 1/3 circumference, described spring is thermo-bimetal's spiral spring, the external diameter of spring matches with cylinder internal diameter, two ends, spring left and right curve the straight section that overlaps with diameter of spring, described spool is the ladder cylindrical body, the cylindrical body two ends are small ends, the middle part is large end, wherein the left end cylindrical body is the cylindrical body that has lacked 1/3 circumference, have the rotation draw-in groove on the left end cylindrical body, rotate draw-in groove vertical with the cylindrical straight flange that has lacked 1/3 circumference, spool middle part diameter and cylinder internal diameter Spielpassung, the spool middle part has the throttle orifice that radially connects, described shutoff pin is cylindrical body, the external diameter of shutoff pin matches with the internal diameter of cylindrical shell, described locating stud, spring, spool and shutoff pin are from left to right installed in cylindrical shell successively, locating stud is fixedly connected with cylindrical shell, spring left end straight section is inserted in the fixed card slot of locating stud, right-hand member is inserted in the rotation draw-in groove of left end of spool, the center line of spool middle part throttle orifice is vertical with lower attachment hole center line with the upper attachment hole of cylindrical shell, the shutoff pin is fixedly connected with cylindrical shell, spool right-hand member and shutoff pin left end connect.
The automatic liquid-spraying structure of a kind of scroll compressor described in the utility model, the thermo-bimetal's material that it is characterized in that described thermo-bimetal's spiral spring is selected according to standard GB/T/T 4461-92 " twin metal strip ", and when making delivery temperature reach 80-140 to spend, the throttle orifice of spool rotates to liquid-spraying pipe and is connected.
The automatic liquid-spraying structure of a kind of scroll compressor described in the utility model is characterized in that the aperture of described spool middle part throttle orifice is 0.5-3mm.
Principle of the present utility model is: the spirality bimetallic spring is as action element, and one end and locating stud are fixed together, and the other end and spool are fixed together.Because locating stud is fixedly connected with cylindrical shell, and spool and cylindrical shell are Spielpassung, can rotate in cylindrical shell, when Exhaust temperature rise, thermo-bimetal's spiral spring is owing to being heated, its right-hand member produces and rotatablely moves, and drives Spool rotating, and the throttle orifice that is positioned at the spool middle part is rotated a certain angle according to the variation of delivery temperature.When temperature was elevated to setting value, throttle orifice rotated to the position of aliging with liquid-spraying pipe, thereby the liquid coolant in liquid-spraying pipe can enter into the hydrojet passage by throttle orifice, connecting tube, and then sprayed in scroll.When delivery temperature is lower, when not needing hydrojet, double metal spiral shape spring sets back, and the throttling spool hole is not communicated with liquid-spraying pipe, thus the carrying out of blocking-up hydrojet.
The utility model has the advantages that: realize the whether automatic control of hydrojet according to compressor exhaust gas inside temperature, compressor is outside only need be utilized pipe arrangement that refrigerant is incorporated into the compressor liquid-spraying pipe from the condensator outlet side to get final product.Structure is very simple, need not external control, easily manufactured, cost is low.In addition, refrigerant enters in scroll by throttle orifice, connecting tube and hydrojet passage, and utilize spool make refrigerant and spring isolated, make spring only be subjected to the effect of delivery temperature, and the not directly effect of liquid body refrigerant, thereby make the time of movement of spring greatly reduce, improved the working life of hydrojet structure.
Description of drawings
The utility model has eight width accompanying drawings.Wherein:
Fig. 1 is the hydrojet structural representation of automatic liquid-spraying scroll compressor
Fig. 2 is the spring schematic diagram
Fig. 3 is that schematic diagram is looked on the left side of Fig. 2
Fig. 4 is the spool schematic diagram
Fig. 5 is that schematic diagram is looked on the left side of Fig. 4
Fig. 6 cylindrical shell schematic diagram
Fig. 7 is the locating stud schematic diagram
Fig. 8 is that schematic diagram is looked on the left side of Fig. 7
Drawing reference numeral is described as follows:
The 1st, upper cover; The 2nd, decide vortex; The 3rd, moving vortex; The 4th, locating stud; The 5th, spring; The 6th, cylindrical shell; The 7th, liquid-spraying pipe; The 8th, spool; The 9th, the shutoff pin; The 10th, connecting tube; The 11st, the hydrojet passage; The 12nd, rotate draw-in groove; The 13rd, throttle orifice; The 14th, upper attachment hole; The 15th, lower attachment hole; The 16th, fixed card slot.
Embodiment
The utility model is described in further detail below in conjunction with the embodiment of accompanying drawing.
As shown in Figure 1, the automatic liquid-spraying structure comprises upper cover 1, liquid-spraying pipe 7, hydrojet passage 11, connecting tube and hydrojet mechanism, liquid-spraying pipe 7 enters scroll compressor by the hole that enters on upper cover 1, entering on liquid-spraying pipe 7 and upper cover 1 is welded and fixed sealing between the hole, liquid-spraying pipe 7 upper ends connection liquid refrigerantss.hydrojet passage 11 is being decided on vortex 2 disk bodies, decide to have on vortex 2 hole that hole that hydrojet passage 11 is communicated with connecting tube 10 and hydrojet passage 11 are communicated with compression chamber, hydrojet mechanism is by cylindrical shell 6, spool 8, spring 5, locating stud 4 and shutoff pin 9 form, have attachment hole 14 and lower attachment hole 15 on cylindrical shell 6 barrels, the center line of upper attachment hole 14 and lower attachment hole 15 overlaps, the upper attachment hole 14 welding manner fixed seal connection of the lower end of liquid-spraying pipe 7 and cylindrical shell 6, the lower attachment hole 15 welding manner fixed seal connection of the upper end of connecting tube 10 and cylindrical shell 6, the lower end of connecting tube 10 with decide vortex 2 on be communicated with connecting tube the hole be tightly connected, employing is inserted into connecting tube 10 in the hydrojet passage 11 of deciding vortex 2.locating stud 4 is ladder cylindrical bodys, the external diameter of the large end of ladder cylindrical body matches with the internal diameter of cylindrical shell 6, ladder cylindrical body small end is the cylindrical body that has lacked 1/3 circumference, ladder cylindrical body small end has fixed card slot 16, fixed card slot 16 is offered along the small end end face diameter, fixed card slot 16 is vertical with the cylindrical straight flange that has lacked 1/3 circumference, spring 5 is thermo-bimetal's spiral spring, thermo-bimetal's material of thermo-bimetal's spiral spring is selected according to standard GB/T/T 4461-92 " twin metal strip ", the throttle orifice 13 of spool is connected with liquid-spraying pipe 7 when delivery temperature reaches 80-140 and spends.The external diameter of spring 5 matches with cylinder internal diameter, spring 5 two ends, left and right curve the straight section that overlaps with diameter of spring, spool 8 is the ladder cylindrical body, the cylindrical body two ends are small ends, the middle part is large end, wherein the left end cylindrical body is the cylindrical body that has lacked 1/3 circumference, have on the left end cylindrical body and rotate draw-in groove 12, rotate draw-in groove 12 vertical with the cylindrical straight flange that has lacked 1/3 circumference, spool middle part diameter and cylinder internal diameter Spielpassung, spool 8 middle parts have the throttle orifice 13 that radially connects, and the aperture of throttle orifice is 0.5-3mm.shutoff pin 9 is cylindrical body, shutoff pin 9 external diameters match with cylindrical shell 6 internal diameters, locating stud 4, spring 5, spool 8 and shutoff pin 9 are from left to right installed in cylindrical shell 6 successively, locating stud 4 is fixedly connected with cylindrical shell 6, the mode that adopts interference fit or be threaded is fixedly connected with, spring 5 left end straight sections are inserted in the fixed card slot 16 of locating stud 4, make spring 5 left end keep the fixed position constant, right-hand member is inserted in the rotation draw-in groove 12 of spool 8 left ends, the center line of spool middle part throttle orifice 13 is vertical with lower attachment hole 15 center lines with the upper attachment hole 14 of cylindrical shell, shutoff pin 9 is fixedly connected with cylindrical shell 6, adopt interference fit or thread connecting mode to be fixed on cylindrical shell 6, spool 8 right-hand members and shutoff pin 9 left ends connect, the displacement in the horizontal direction of restriction spool 8.
Claims (3)
1. the automatic liquid-spraying structure of a scroll compressor, comprise upper cover (1), liquid-spraying pipe (7), decide vortex (2) and hydrojet passage (11), liquid-spraying pipe (7) enters scroll compressor by the hole that enters on upper cover (1), liquid-spraying pipe (7) upper end connects liquid refrigerants, hydrojet passage (11) is being decided on vortex (2) disk body, it is characterized in that described automatic liquid-spraying structure also comprises connecting tube (10) and hydrojet mechanism, describedly decide to have on vortex (2) hole that hole that hydrojet passage (11) is connected with connecting tube (10) and hydrojet passage (11) are communicated with compression chamber, described hydrojet mechanism is by cylindrical shell (6), spool (8), spring (5), locating stud (4) and shutoff pin (9) form, have attachment hole (14) and lower attachment hole (15) on described cylindrical shell (6) barrel, the center line of upper attachment hole (14) and lower attachment hole (15) overlaps, upper attachment hole (14) fixed seal connection of the lower end of liquid-spraying pipe (7) and cylindrical shell, lower attachment hole (15) fixed seal connection of the upper end of described connecting tube (10) and cylindrical shell (6), connecting tube (10) lower end with decide vortex (2) on be communicated with connecting tube (10) the hole be tightly connected, described locating stud (4) is the ladder cylindrical body, the external diameter of the large end of ladder cylindrical body matches with the internal diameter of cylindrical shell, ladder cylindrical body small end is the cylindrical body that has lacked 1/3 circumference, ladder cylindrical body small end has fixed card slot (16), fixed card slot (16) is offered along the small end end face diameter, fixed card slot (16) is vertical with the cylindrical straight flange that has lacked 1/3 circumference, described spring (5) is thermo-bimetal's spiral spring, the external diameter of spring (5) matches with cylindrical shell (6) internal diameter, spring (5) two ends, left and right curve the straight section that overlaps with diameter of spring, described spool (8) is the ladder cylindrical body, the cylindrical body two ends are small ends, the middle part is large end, wherein the left end cylindrical body is the cylindrical body that has lacked 1/3 circumference, have on the left end cylindrical body and rotate draw-in groove (12), rotate draw-in groove (12) vertical with the cylindrical straight flange of disappearance circumference, spool (8) middle part diameter and cylindrical shell (6) internal diameter Spielpassung, spool (8) middle part has the throttle orifice (13) that radially connects, described shutoff pin (9) is cylindrical body, the external diameter of shutoff pin (9) matches with the internal diameter of cylindrical shell (6), described locating stud (4), spring (5), spool (8) and shutoff pin (9) are from left to right installed in cylindrical shell successively, locating stud (4) is fixedly connected with cylindrical shell (6), spring (5) left end straight section is inserted in the fixed card slot (16) of locating stud, right-hand member is inserted in the rotation draw-in groove (12) of left end of spool (8), the center line of spool (8) middle part throttle orifice (13) is vertical with lower attachment hole (15) center line with the upper attachment hole (14) of cylindrical shell, shutoff pin (9) is fixedly connected with cylindrical shell (6), spool (8) right-hand member and shutoff pin (9) left end connect.
2. a kind of automatic liquid-spraying structure of scroll compressor according to claim 1, when the thermo-bimetal's material that it is characterized in that described thermo-bimetal's spiral spring made delivery temperature reach 80-140 to spend, the throttle orifice (13) of spool (8) rotated to liquid-spraying pipe (11) and is connected.
3. a kind of automatic liquid-spraying structure of scroll compressor according to claim 1, is characterized in that the aperture of described spool (8) middle part throttle orifice (13) is 0.5-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532914 CN202926640U (en) | 2012-10-17 | 2012-10-17 | Automatic liquid spraying structure of scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532914 CN202926640U (en) | 2012-10-17 | 2012-10-17 | Automatic liquid spraying structure of scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926640U true CN202926640U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220532914 Expired - Lifetime CN202926640U (en) | 2012-10-17 | 2012-10-17 | Automatic liquid spraying structure of scroll compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN202926640U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321430A (en) * | 2015-07-01 | 2017-01-11 | 艾默生环境优化技术有限公司 | Compressor and valve assembly |
| US9989057B2 (en) | 2014-06-03 | 2018-06-05 | Emerson Climate Technologies, Inc. | Variable volume ratio scroll compressor |
| US10066622B2 (en) | 2015-10-29 | 2018-09-04 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation system |
| US10094380B2 (en) | 2012-11-15 | 2018-10-09 | Emerson Climate Technologies, Inc. | Compressor |
| US10323638B2 (en) | 2015-03-19 | 2019-06-18 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10378540B2 (en) | 2015-07-01 | 2019-08-13 | Emerson Climate Technologies, Inc. | Compressor with thermally-responsive modulation system |
| US10495086B2 (en) | 2012-11-15 | 2019-12-03 | Emerson Climate Technologies, Inc. | Compressor valve system and assembly |
| US10753352B2 (en) | 2017-02-07 | 2020-08-25 | Emerson Climate Technologies, Inc. | Compressor discharge valve assembly |
| US10801495B2 (en) | 2016-09-08 | 2020-10-13 | Emerson Climate Technologies, Inc. | Oil flow through the bearings of a scroll compressor |
| US10890186B2 (en) | 2016-09-08 | 2021-01-12 | Emerson Climate Technologies, Inc. | Compressor |
| US10954940B2 (en) | 2009-04-07 | 2021-03-23 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US10962008B2 (en) | 2017-12-15 | 2021-03-30 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10995753B2 (en) | 2018-05-17 | 2021-05-04 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US11022119B2 (en) | 2017-10-03 | 2021-06-01 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US11655813B2 (en) | 2021-07-29 | 2023-05-23 | Emerson Climate Technologies, Inc. | Compressor modulation system with multi-way valve |
| US11846287B1 (en) | 2022-08-11 | 2023-12-19 | Copeland Lp | Scroll compressor with center hub |
| US11965507B1 (en) | 2022-12-15 | 2024-04-23 | Copeland Lp | Compressor and valve assembly |
-
2012
- 2012-10-17 CN CN 201220532914 patent/CN202926640U/en not_active Expired - Lifetime
Cited By (26)
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| US11635078B2 (en) | 2009-04-07 | 2023-04-25 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US10954940B2 (en) | 2009-04-07 | 2021-03-23 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US10495086B2 (en) | 2012-11-15 | 2019-12-03 | Emerson Climate Technologies, Inc. | Compressor valve system and assembly |
| US10907633B2 (en) | 2012-11-15 | 2021-02-02 | Emerson Climate Technologies, Inc. | Scroll compressor having hub plate |
| US11434910B2 (en) | 2012-11-15 | 2022-09-06 | Emerson Climate Technologies, Inc. | Scroll compressor having hub plate |
| US10094380B2 (en) | 2012-11-15 | 2018-10-09 | Emerson Climate Technologies, Inc. | Compressor |
| US9989057B2 (en) | 2014-06-03 | 2018-06-05 | Emerson Climate Technologies, Inc. | Variable volume ratio scroll compressor |
| US10323638B2 (en) | 2015-03-19 | 2019-06-18 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10323639B2 (en) | 2015-03-19 | 2019-06-18 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10378540B2 (en) | 2015-07-01 | 2019-08-13 | Emerson Climate Technologies, Inc. | Compressor with thermally-responsive modulation system |
| US10598180B2 (en) | 2015-07-01 | 2020-03-24 | Emerson Climate Technologies, Inc. | Compressor with thermally-responsive injector |
| CN106321430B (en) * | 2015-07-01 | 2019-05-28 | 艾默生环境优化技术有限公司 | Compressor and valve module |
| CN106321430A (en) * | 2015-07-01 | 2017-01-11 | 艾默生环境优化技术有限公司 | Compressor and valve assembly |
| US10087936B2 (en) | 2015-10-29 | 2018-10-02 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation system |
| US10066622B2 (en) | 2015-10-29 | 2018-09-04 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation system |
| US10801495B2 (en) | 2016-09-08 | 2020-10-13 | Emerson Climate Technologies, Inc. | Oil flow through the bearings of a scroll compressor |
| US10890186B2 (en) | 2016-09-08 | 2021-01-12 | Emerson Climate Technologies, Inc. | Compressor |
| US10753352B2 (en) | 2017-02-07 | 2020-08-25 | Emerson Climate Technologies, Inc. | Compressor discharge valve assembly |
| US11022119B2 (en) | 2017-10-03 | 2021-06-01 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10962008B2 (en) | 2017-12-15 | 2021-03-30 | Emerson Climate Technologies, Inc. | Variable volume ratio compressor |
| US10995753B2 (en) | 2018-05-17 | 2021-05-04 | Emerson Climate Technologies, Inc. | Compressor having capacity modulation assembly |
| US11754072B2 (en) | 2018-05-17 | 2023-09-12 | Copeland Lp | Compressor having capacity modulation assembly |
| US11655813B2 (en) | 2021-07-29 | 2023-05-23 | Emerson Climate Technologies, Inc. | Compressor modulation system with multi-way valve |
| US11879460B2 (en) | 2021-07-29 | 2024-01-23 | Copeland Lp | Compressor modulation system with multi-way valve |
| US11846287B1 (en) | 2022-08-11 | 2023-12-19 | Copeland Lp | Scroll compressor with center hub |
| US11965507B1 (en) | 2022-12-15 | 2024-04-23 | Copeland Lp | Compressor and valve assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: PANASONIC APPLIANCES COMPRESSOR (DALIAN) CO., LTD. Free format text: FORMER NAME: DALIAN SANYO COMPRESSOR CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 116600 Dalian economic and Technological Development Zone, Liaoning Pine Street, No. 8 Patentee after: PANASONIC APPLIANCES COMPRESSOR (DALIAN) CO.,LTD. Address before: 116033, No. 8 Song Lan street, Dalian economic and Technological Development Zone, Liaoning, China Patentee before: DALIAN SANYO COMPRESSOR Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |