CN201811481U - Low-temperature heat pump system - Google Patents
Low-temperature heat pump system Download PDFInfo
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- CN201811481U CN201811481U CN2010201017327U CN201020101732U CN201811481U CN 201811481 U CN201811481 U CN 201811481U CN 2010201017327 U CN2010201017327 U CN 2010201017327U CN 201020101732 U CN201020101732 U CN 201020101732U CN 201811481 U CN201811481 U CN 201811481U
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Abstract
The utility model discloses a low-temperature heat pump system which comprises a scroll compressor and an injection pipeline system, wherein the scroll compressor comprises at least one injection port which is communicated with a heat exchanger A, a heat exchanger B, a heat exchanger C, a reservoir, a gas-liquid separator and maintaining flow paths of a throttling mechanism and a cut-off mechanism so as to form the low-temperature heat pump system with a gas supply injection system; the injection pipeline system is formed in a way that a pipeline is led out from the inlet and/or the outlet of the heat exchanger C, passes through the throttling mechanism and then is connected on the pipeline of the gas supply injection system of an original low-temperature heat pump system, and the injection pipeline system and an original gas supply injection system are jointly connected on the injection port of the scroll compressor by the pipeline. The low-temperature heat pump system also comprises the gas supply injection system and another injection pipeline system, thus guaranteeing the safe and reliable running under lower temperature environment, and enlarging the using and running ranges of the low-temperature heat pump system; in addition, the low-temperature heat pump system is simple in structure, convenient for production, low in cost and suitable for promotion.
Description
Technical field
The utility model relates to a kind of hot pump in low temp system, relates in particular to a kind of hot pump in low temp system with injection line.
Background technology
Hot pump in low temp system is applied at cold district as a kind of energy-conserving and environment-protective mode that heats.When under low ambient temperature, heating, the pressure ratio of hot pump in low temp system is bigger, refrigerant flow also greatly reduces simultaneously, delivery temperature significantly raises, the heating capacity of hot pump in low temp system can't satisfy cold district winter heating demand, even under low ambient temperature more, hot pump in low temp system can't normally move.Existing hot pump in low temp system generally adopts the mode that increases tonifying Qi to solve this problem, even compressor is realized accurate secondary compression, improves compressor internal pressure ratio, increases refrigerant flow, reduces compressor exhaust temperature.This mode can satisfy the hot pump in low temp system service requirement in most of zone, if but hot pump in low temp system is will move under bigger pressure ratio or lower environment temperature the time, the hot pump in low temp system of tonifying Qi mode will be difficult to meet the demands, the delivery temperature of compressor can not reduce by the tonifying Qi mode this moment, the delivery temperature of compressor will be above the operating limit temperature, and the hot pump in low temp system operation is hard to carry on.
Summary of the invention
The utility model is at the proposition of above problem, and develop a kind of hot pump in low temp system with injection line, realizing hot pump in low temp system at low ambient temperature more, more under the high pressure ratio operating mode, can safe and reliable work, make system have good heating effect.The technological means that the utility model adopted is as follows:
A kind of hot pump in low temp system, the throttle mechanism and the disabling mechanism that comprise a heat exchanger A, a heat exchanger B, a heat exchanger C, a screw compressor, a reservoir, a gas-liquid separator and respective numbers constitute, described screw compressor, comprise at least one injection interface, it keeps stream to be communicated with the hot pump in low temp system that formation has the tonifying Qi spraying system with heat exchanger A, heat exchanger B, heat exchanger C, reservoir, gas-liquid separator and throttle mechanism and disabling mechanism;
It is characterized in that also comprising: the injection line system, draw one road pipeline by the inlet of heat exchanger C and/or outlet and be connected to after by throttle mechanism on the pipeline of the tonifying Qi spraying system in the former hot pump in low temp system and constitute, this injection line system and former tonifying Qi spraying system are connected on the injection interface of screw compressor jointly by pipeline.
Also be provided with disabling mechanism on the pipeline of injection line system, i.e. the inlet of heat exchanger C or outlet drawn one road pipeline and is connected on the pipeline of the tonifying Qi spraying system in the former hot pump in low temp system after by throttle mechanism and disabling mechanism.
Described heat exchanger C is plate type heat exchanger or flash tank.
Heat exchanger C is a plate type heat exchanger, comprises two inlets and two outlets:
First inlet receives the middle temperature liquid refrigerant that flows out from heat exchanger A, and first outlet is transported to described heat exchanger B with cold excessively liquid refrigerant, and first inlet and first outlet are communicated with described heat exchanger A, heat exchanger B stream;
Second inlet receives the vapour-liquid mixed state cold-producing medium that middle temperature liquid refrigerant that heat exchanger A flows out flows into after by described throttle mechanism, second outlet is transported to screw compressor with overheated cold-producing medium and sprays interface, and second inlet and second outlet are sprayed the interface stream with described heat exchanger A, heat exchanger B and screw compressor and be communicated with;
In addition, drawing one road pipeline in first inlet of heat exchanger C and/or first outlet is connected to after by throttle mechanism and disabling mechanism on the pipeline that second outlet is transported to overheated cold-producing medium screw compressor injection interface.
Heat exchanger C is a flash tank, comprises an inlet and plural outlet:
The vapour-liquid mixed state cold-producing medium that the middle temperature liquid refrigerant that inlet heat exchanger A flows out flows into after by described throttle mechanism, first outlet of described heat exchanger C is transported to described heat exchanger B with cold excessively liquid refrigerant, and first outlet of the inlet of described heat exchanger C and described heat exchanger C is communicated with described heat exchanger A, heat exchanger B stream;
Second outlet of described heat exchanger C is transported to screw compressor with overheated cold-producing medium and sprays interface, and second outlet of the inlet of described heat exchanger C and described heat exchanger C is sprayed the interface stream with described heat exchanger A, heat exchanger B and screw compressor and is communicated with;
In addition, the inlet of heat exchanger C, first outlet and/or remove other outlet above-mentioned two outlets and draw one road pipeline and be connected to second after by throttle mechanism and disabling mechanism and export overheated cold-producing medium is transported on the pipeline of screw compressor injection interface.
Described throttle mechanism is expansion valve, magnetic valve, stop valve or capillary; Described disabling mechanism is expansion valve, magnetic valve or stop valve.
Also comprise a bypass line, when described injection line system and tonifying Qi spraying system and heat exchanger C were in cut-off state, described bypass line allowed that stream is communicated with between heat exchanger A, the heat exchanger B.
Also comprise a cross valve, be used to control flow of refrigerant, described hot pump in low temp system is changed between refrigeration mode and heating mode, and it keeps stream to be communicated with described heat exchanger A, heat exchanger B, heat exchanger C, injection line, screw compressor, reservoir and a throttle mechanism.
Compared with prior art, the utility model has the advantages that conspicuous specific as follows: get hot pump in low temp system described in the utility model and comprise the tonifying Qi spraying system, comprise another injection line system simultaneously, hot pump in low temp system can also can adopt two cover spraying systems simultaneously according to variation conversion in real time between two cover spraying systems of operating mode.If only adopt the tonifying Qi spraying system, can guarantee that hot pump in low temp system moves under lower environment temperature, for example-15 ℃, simultaneously because the heat exchange effect of tonifying Qi spraying system, the ability of hot pump in low temp system and efficient all have effect preferably; If only adopt the injection line system, can guarantee that hot pump in low temp system moves under lower environment temperature, for example-20 ℃, can obtain higher condensation temperature down at-20 ℃ simultaneously, for example 60 ℃, the utilization and operation scope of hot pump in low temp system obtains enlarging; If adopt tonifying Qi spraying system and injection line system simultaneously, because the heat exchange effect of tonifying Qi spraying system, the ability of hot pump in low temp system and efficient all have effect preferably, because injection line system, can guarantee hot pump in low temp system safe and reliable operation under lower environment temperature, obtain the higher condensation temperature that gets, the utilization and operation scope of hot pump in low temp system obtains enlarging.Get hot pump in low temp system thus described in the utility model and taken into account ability, efficient and operational reliability, make that the application of hot pump in low temp system is further enlarged.In addition, because it is simple in structure, be convenient to produce, and with low cost being suitable for extensively promoted in hot pump in low temp system.
Description of drawings
Fig. 1 is the structural representation of the 1st embodiment of plate type heat exchanger for heat exchanger C in the utility model;
Fig. 2 is the structural representation of the 2nd embodiment of plate type heat exchanger for heat exchanger C in the utility model;
Fig. 3 is the structural representation of the 3rd embodiment of plate type heat exchanger for heat exchanger C in the utility model;
Fig. 4 is the structural representation of the 1st embodiment of flash tank for heat exchanger C in the utility model;
Fig. 5 is the structural representation of the 2nd embodiment of flash tank for heat exchanger C in the utility model;
Fig. 6 is the structural representation of the 3rd embodiment of flash tank for heat exchanger C in the utility model;
Fig. 7 is the structural representation of the 4th embodiment of flash tank for heat exchanger C in the utility model.
The specific embodiment
In conjunction with the accompanying drawings the utility model is described further.
Embodiment 1: as shown in Figure 1, hot pump in low temp system, comprise heat exchanger A6, heat exchanger B32, heat exchanger C21, throttle mechanism 16+15+12, screw compressor 1, injection line 25+24+14 and some other parts, all parts keep stream to be communicated with, and cold-producing medium can circulate between these parts.By cross valve 4 control flow of refrigerant, described hot pump in low temp system is changed between refrigeration mode and heating mode, will introduce described hot pump in low temp system operation principle with heating mode below.
The high-temperature gas cold-producing medium is discharged by exhaust outlet 2 under the pressure effect of screw compressor 1, pipeline 3 connects cross valve 4, cross valve 4 control flow of refrigerant, described hot pump in low temp system is worked under heating mode, cold-producing medium enters heat exchanger A6 by pipeline 5, warm liquid refrigerant in becoming the high-temperature gas cold-producing medium is finished heat release in heat exchanger A6 after, liquid refrigerant 7 enters reservoir 8 by the road, and entering pipeline 10 by the export pipeline 9 of reservoir 8, liquid refrigerant is divided into three pipelines 12,13,14 at joint 11. Pipeline 12,13 is communicated with the import 17,19 of heat exchanger C21 respectively, disabling mechanism 15 and throttle mechanism 16 have been arranged on the pipeline 12, disabling mechanism 15 stop valve, magnetic valve etc. has parts by function, throttle mechanism 16 is parts with throttling function such as expansion valve, magnetic valve, capillary, liquid refrigerant all decreases by disabling mechanism 15 and throttle mechanism 16 back pressure, temperature, is transformed to the gas-liquid mixed attitude by liquid state.Cold-producing medium is finished heat exchange in the pipeline 12,13 in heat exchanger C21, export 18 cold-producing mediums by cold excessively, by the road 26, by throttle mechanism 27 and disabling mechanism 28, enter heat exchanger B32, cold-producing medium heat absorption is transformed to gaseous state by the gas-liquid mixed attitude, and gaseous refrigerant successively by the road 33, cross valve 4, pipeline 34 enter gas-liquid separator 35, by the road 36 air entries 37 that finally enter screw compressor 1; Export 20 cold-producing mediums heat absorptions and be transformed to gaseous state by the gas-liquid mixed attitude, and by the road 22,38, by stop valve 39, enter screw compressor 1 and spray interface 40.Throttle mechanism 25 and disabling mechanism 24 have been arranged on the pipeline 14, liquid refrigerant is under described throttle mechanism 25 and disabling mechanism 24 effects, pressure, temperature all reduce, be transformed to the gas-liquid mixed attitude by liquid state, gas-liquid mixed attitude cold-producing medium mixes with gaseous refrigerant in the pipeline 22 at joint 23 places, common by pipeline 38, stop valve 39, enter screw compressor 1 and spray interface 40.Above flow process is exactly the cyclic process of cold-producing medium under the hot pump in low temp system heating mode.
In addition this hot pump in low temp system also comprises a bypass pipe road, described pipeline when hot pump in low temp system is in refrigeration mode, with heat exchanger A6 with heat exchanger B32 directly is communicated with.The high-temperature gas cold-producing medium is discharged by exhaust outlet 2 under the pressure effect of screw compressor 1, pipeline 3 connects cross valve 4, cross valve 4 control flow of refrigerant, described hot pump in low temp system is worked under refrigeration mode, cold-producing medium enters heat exchanger B32 by pipeline 33, warm liquid refrigerant in becoming the high-temperature gas cold-producing medium is finished heat release in heat exchanger B32 after, liquid refrigerant is by the road 29 by disabling mechanism 30 and throttle mechanism 31, disabling mechanism 30 is stop valve, magnetic valves etc. have the parts by function, throttle mechanism 31 is expansion valve, magnetic valve, capillaries etc. have the parts of throttling function, liquid refrigerant is by disabling mechanism 30 and throttle mechanism 31 back pressure, temperature all decreases, and is transformed to the gas-liquid mixed attitude by liquid state.Cold-producing medium enters heat exchanger A6, the cold-producing medium heat absorption is transformed to gaseous state by the gas-liquid mixed attitude, gaseous refrigerant successively by the road 5, cross valve 4, pipeline 34 enter gas- liquid separator 35,36 air entries 37 that finally enter screw compressor 1 have more than been finished the cyclic process of cold-producing medium under the hot pump in low temp system refrigeration mode by the road.
Embodiment 2: as shown in Figure 2, this embodiment with the difference of embodiment 1 is, pipeline 26 is divided into pipeline 41 and pipeline 43 at joint 42, the motion of cold-producing medium is identical with embodiment 1 in the pipeline 41, to introduce the cold-producing medium direction of motion in the pipeline 43 below, throttle mechanism 45 and disabling mechanism 44 have been arranged on the pipeline 43, cross cold cold-producing medium under described throttle mechanism 45 and disabling mechanism 44 effects, pressure, temperature all reduces, be transformed to the gas-liquid mixed attitude by supercooled liquid, gas-liquid mixed attitude cold-producing medium mixes with gaseous refrigerant in the pipeline 22 at joint 46 places, jointly by pipeline 38, stop valve 39 enters screw compressor 1 and sprays interface 40.Above flow process is exactly the cyclic process of cold-producing medium under the embodiment 2 hot pump in low temp system heating modes.Other structural principle is not repeated with embodiment 1.
Embodiment 3: as shown in Figure 3, present embodiment is that embodiment 1 is routine with combining of embodiment 2, and its structure and principle are not repeated herein.
Embodiment 4: as shown in Figure 4, present embodiment is that liquid refrigerant is divided into two pipelines 47,14 at joint 11 with the difference of embodiment 1.The motion of cold-producing medium is identical with embodiment 1 in the pipeline 14, to introduce cold-producing medium motion in the pipeline 47 below, disabling mechanism 48 and throttle mechanism 49 have been arranged on the pipeline 47, disabling mechanism 48 stop valve, magnetic valve etc. has parts by function, throttle mechanism 49 is parts with throttling function such as expansion valve, magnetic valve, capillary, liquid refrigerant all decreases by disabling mechanism 48 and throttle mechanism 49 back pressure, temperature, is transformed to the gas-liquid mixed attitude by liquid state.Gas-liquid mixed attitude cold-producing medium is entered among the heat exchanger C53 by inlet 50, cold-producing medium is finished the shwoot process at heat exchanger C53, in the outlet 51 is liquid refrigerant, the motion that enters cold-producing medium in the pipeline 26 is identical with embodiment 1, in the outlet 52 is gaseous refrigerant, by the gas-liquid mixed attitude refrigerant mixed in pipeline 54 and the pipeline 14,, enter screw compressor 1 and spray interface 40 jointly by pipeline 38, stop valve 39.Above flow process is exactly the cyclic process of cold-producing medium under the embodiment 4 hot pump in low temp system heating modes.
Embodiment 5: as shown in Figure 5, the difference of present embodiment and embodiment 4 is, liquid refrigerant in the pipeline 26 is divided into pipeline 61 and pipeline 62 at joint 60, the motion of cold-producing medium is identical with embodiment 4 in the pipeline 62, to introduce cold-producing medium motion in the pipeline 61 below, throttle mechanism 64 and disabling mechanism 63 have been arranged on the pipeline 61, cross cold cold-producing medium under described throttle mechanism 64 and disabling mechanism 63 effects, pressure, temperature all reduces, be transformed to the gas-liquid mixed attitude by liquid state, gas-liquid mixed attitude cold-producing medium mixes with gaseous refrigerant in the pipeline 59, jointly by pipeline 38, stop valve 39 enters screw compressor 1 and sprays interface 40.Above flow process is exactly the cyclic process of cold-producing medium under the embodiment 5 hot pump in low temp system heating modes.
Embodiment 6: as shown in Figure 6, the difference of present embodiment and embodiment 4 is, heat exchanger C53 has increased outlet 55, liquid refrigerant enters pipeline 56 from exporting 55, throttle mechanism 58 and disabling mechanism 57 have been arranged on the pipeline 56, cross cold cold-producing medium under described throttle mechanism 58 and disabling mechanism 57 effects, pressure, temperature all reduce, be transformed to the gas-liquid mixed attitude by liquid state, gas-liquid mixed attitude cold-producing medium mixes with gaseous refrigerant in the pipeline 59, common by pipeline 38, stop valve 39, enter screw compressor 1 and spray interface 40.Above flow process is exactly the cyclic process of cold-producing medium under the embodiment 6 hot pump in low temp system heating modes.
Embodiment 7: as shown in Figure 7, present embodiment is that embodiment 4, embodiment 5 are routine with combining of embodiment 6, and its structure and principle are not repeated herein.
In sum, this hot pump in low temp system removes and comprises self tonifying Qi spraying system, comprise another injection line system (comprising the multichannel injection line) simultaneously, hot pump in low temp system can also can adopt two cover spraying systems simultaneously according to variation conversion in real time between two cover spraying systems of operating mode.Have flexible and changeable characteristics, can guarantee hot pump in low temp system normally operation under lower environment temperature.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.
Claims (8)
1. hot pump in low temp system, the throttle mechanism and the disabling mechanism that comprise a heat exchanger A, a heat exchanger B, a heat exchanger C, a screw compressor, a reservoir, a gas-liquid separator and respective numbers constitute, described screw compressor, comprise at least one injection interface, it keeps stream to be communicated with the hot pump in low temp system that formation has the tonifying Qi spraying system with heat exchanger A, heat exchanger B, heat exchanger C, reservoir, gas-liquid separator and throttle mechanism and disabling mechanism;
It is characterized in that also comprising: the injection line system, draw one road pipeline by the inlet of heat exchanger C and/or outlet and be connected to after by throttle mechanism on the pipeline of the tonifying Qi spraying system in the former hot pump in low temp system and constitute, this injection line system and former tonifying Qi spraying system are connected on the injection interface of screw compressor jointly by pipeline.
2. system according to claim 1, it is characterized in that also being provided with disabling mechanism on the pipeline of injection line system, i.e. the inlet of heat exchanger C or outlet drawn one road pipeline and is connected on the pipeline of the tonifying Qi spraying system in the former hot pump in low temp system after by throttle mechanism and disabling mechanism.
3. system according to claim 2 is characterized in that described heat exchanger C is plate type heat exchanger or flash tank.
4. system according to claim 3 is characterized in that heat exchanger C is a plate type heat exchanger, comprises two inlets and two outlets:
First inlet receives the middle temperature liquid refrigerant that flows out from heat exchanger A, and first outlet is transported to described heat exchanger B with cold excessively liquid refrigerant, and first inlet and first outlet are communicated with described heat exchanger A, heat exchanger B stream;
Second inlet receives the vapour-liquid mixed state cold-producing medium that middle temperature liquid refrigerant that heat exchanger A flows out flows into after by described throttle mechanism, second outlet is transported to screw compressor with overheated cold-producing medium and sprays interface, and second inlet and second outlet are sprayed the interface stream with described heat exchanger A, heat exchanger B and screw compressor and be communicated with;
In addition, drawing one road pipeline in first inlet of heat exchanger C and/or first outlet is connected to after by throttle mechanism and disabling mechanism on the pipeline that second outlet is transported to overheated cold-producing medium screw compressor injection interface.
5. system according to claim 3 is characterized in that heat exchanger C is a flash tank, comprises an inlet and plural outlet:
The vapour-liquid mixed state cold-producing medium that the middle temperature liquid refrigerant that inlet heat exchanger A flows out flows into after by described throttle mechanism, first outlet of described heat exchanger C is transported to described heat exchanger B with cold excessively liquid refrigerant, and first outlet of the inlet of described heat exchanger C and described heat exchanger C is communicated with described heat exchanger A, heat exchanger B stream;
Second outlet of described heat exchanger C is transported to screw compressor with overheated cold-producing medium and sprays interface, and second outlet of the inlet of described heat exchanger C and described heat exchanger C is sprayed the interface stream with described heat exchanger A, heat exchanger B and screw compressor and is communicated with;
In addition, the inlet of heat exchanger C, first outlet and/or remove other outlet above-mentioned two outlets and draw one road pipeline and be connected to second after by throttle mechanism and disabling mechanism and export overheated cold-producing medium is transported on the pipeline of screw compressor injection interface.
6. system according to claim 1 is characterized in that described throttle mechanism is expansion valve, magnetic valve, stop valve or capillary; Described disabling mechanism is expansion valve, magnetic valve or stop valve.
7. system according to claim 1 is characterized in that also comprising a bypass line, and when described injection line system and tonifying Qi spraying system and heat exchanger C were in cut-off state, described bypass line allowed that stream is communicated with between heat exchanger A, the heat exchanger B.
8. system according to claim 7, it is characterized in that also comprising a cross valve, be used to control flow of refrigerant, described hot pump in low temp system is changed between refrigeration mode and heating mode, and it keeps stream to be communicated with described heat exchanger A, heat exchanger B, heat exchanger C, injection line, screw compressor, reservoir and a throttle mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201017327U CN201811481U (en) | 2010-01-25 | 2010-01-25 | Low-temperature heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201017327U CN201811481U (en) | 2010-01-25 | 2010-01-25 | Low-temperature heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201811481U true CN201811481U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201017327U Expired - Lifetime CN201811481U (en) | 2010-01-25 | 2010-01-25 | Low-temperature heat pump system |
Country Status (1)
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| CN (1) | CN201811481U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322716A (en) * | 2013-06-17 | 2013-09-25 | 江苏科立德制冷设备有限公司 | Outdoor low-temperature vortex parallel compression condensing unit with enhanced vapor injection |
| CN103322717A (en) * | 2013-06-17 | 2013-09-25 | 江苏科立德制冷设备有限公司 | Low-temperature vortex parallel compression condensing unit with enhanced vapor injection |
| CN105318606A (en) * | 2014-07-29 | 2016-02-10 | 青岛海信日立空调系统有限公司 | Indoor unit and outdoor unit of air conditioner as well as air conditioner |
-
2010
- 2010-01-25 CN CN2010201017327U patent/CN201811481U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322716A (en) * | 2013-06-17 | 2013-09-25 | 江苏科立德制冷设备有限公司 | Outdoor low-temperature vortex parallel compression condensing unit with enhanced vapor injection |
| CN103322717A (en) * | 2013-06-17 | 2013-09-25 | 江苏科立德制冷设备有限公司 | Low-temperature vortex parallel compression condensing unit with enhanced vapor injection |
| CN105318606A (en) * | 2014-07-29 | 2016-02-10 | 青岛海信日立空调系统有限公司 | Indoor unit and outdoor unit of air conditioner as well as air conditioner |
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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's compressor (Dalian) Co., Ltd Address before: 116033 No. 78 East Sea Road, Ganjingzi District, Liaoning, Dalian Patentee before: Dalian Sanyo Compressor Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |