CN101749899B - Air conditioner matching device - Google Patents
Air conditioner matching device Download PDFInfo
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- CN101749899B CN101749899B CN200810220365XA CN200810220365A CN101749899B CN 101749899 B CN101749899 B CN 101749899B CN 200810220365X A CN200810220365X A CN 200810220365XA CN 200810220365 A CN200810220365 A CN 200810220365A CN 101749899 B CN101749899 B CN 101749899B
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- 238000004378 air conditioning Methods 0.000 claims description 35
- 230000009471 action Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 abstract description 17
- 238000011161 development Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract 2
- 230000008878 coupling Effects 0.000 description 27
- 238000010168 coupling process Methods 0.000 description 27
- 238000005859 coupling reaction Methods 0.000 description 27
- 239000002826 coolant Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 238000013461 design Methods 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 244000188472 Ilex paraguariensis Species 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention provides an air conditioner matching device, and mainly relates to the field of air conditioner matching devices. The device comprises: the first connecting pipe is connected with an air conditioner indoor unit; the second connecting pipe is connected with an air conditioner external unit; and a plurality of pairs of first cut-off valves symmetrically disposed at opposite sides of the supporting bracket, wherein the plurality of first cut-off valves disposed at a first side of the supporting bracket are connected to the first connection pipe, and the plurality of first cut-off valves disposed at an opposite second side of the supporting bracket are connected to the second connection pipe. The air conditioner matching device further comprises a liquid storage device, wherein the liquid storage device is connected to the first connecting pipe, the second connecting pipe and the plurality of first stop valves. The air conditioner matching device can reduce the contact probability between the system and the outside air when the capillary tube is replaced, reduce the influence of the addition and subtraction refrigerants on the purity and the filling amount of the system refrigerants when the system refrigerants are matched, reduce the startup and shutdown times, improve the matching efficiency, and reduce the development cost and the matching period.
Description
Technical field
The present invention relates to the domestic air conditioning field, be specifically related to the coalignment of air-conditioning.
Background technology
Each air conditioning system maker is after developing air-conditioning; In order to reduce development cost and to improve heat pump performance; To carry out matching and debugging to the performance of air-conditioning according to expected design; Found the problem that exists in Air-conditioner design and the equipment performance, thereby taked the corresponding modification measure to reach designing requirement to guarantee air-conditioning.Every money air conditioner all need be equipped with the capillary of model and pour into a certain amount of refrigerant; The refrigerant that has the capillary of throttling action and poured into has material impact for the combination property (air-breathing capacity, air quantity, leaving air temp, electric thermo-couple temperature etc.) of air-conditioning; Therefore in product development process, need to every money different types of air conditioners the concrete definite size capillaceous of installing and the groundwater increment of refrigerant.Because the theoretic design length of groundwater increment of throttle capillary tube and refrigerant differs and satisfies the designing requirement of heat pump performance surely fully, therefore need in the process of actual match, specifically confirm the value of the two.
Yet; When coupling; The adjusting of replacing capillaceous and cooling medium charging amount all has a lot of uncertain factors to exist; For example: once need test many capillaries in the coupling, and the air (for quick coupling, the general using refrigerant is discharged the air in the capillary) in must the emptying capillary when changing capillary is to avoid the influence of air to matching process; In the debugging cooling medium charging amount process, when increasing the cooling medium charging amount, air is easy to sneak in the air-conditioning refrigeration system.Like this, when air-conditioning carries out performance verification after once coupling is accomplished, usually can there be very big deviation, so just must carries out the secondary coupling, thereby increase development cost and matching efficiency is reduced with desired value.And, can not avoid the problems referred to above fully during the secondary coupling.In addition, all need shut down when changing capillary at every turn or changing the cooling medium charging amount and carry out, start needs the regular hour to make the working condition of system stable when mating once more, can increase the time of coupling so again, makes matching process loaded down with trivial details.
Further; The air-conditioner matching device that before uses in the technology is except existing the problems referred to above; Debugging to capillary and cooling medium charging amount during coupling utilizes different systems to carry out respectively; And because used capillary coalignment can only be installed a capillary, so each outfit all need be shut down the replacing capillary, coupling equipment and process are too loaded down with trivial details.
Therefore, a kind of air-conditioner matching device need be provided, can improve the accuracy and the efficient of coupling, reduce the possibility of secondary coupling, practice thrift development cost, shorten the coupling cycle of new architecture, and simplify matching process.
Summary of the invention
Technical problem to be solved by this invention provides a kind of air-conditioner matching device; The probability that system contacted with outside air when it can reduce the capillary replacing; The plus-minus refrigerant was to the influence of system's refrigerant degree of purity and groundwater increment when reduction system refrigerant mated; Reduce the startup-shutdown number of times simultaneously, improve matching efficiency, reduce development cost and coupling cycle.
For solving the problems of the technologies described above, the invention provides a kind of air-conditioner matching device, comprising: first tube connector is connected in air-conditioning internal machine; And second tube connector, be connected in outdoor machine of air-conditioner.This air-conditioner matching device further comprises: many to first stop valve, be arranged in the relative both sides of bracing frame symmetrically, and particularly, a plurality of first stop valves that are arranged in first side of bracing frame are connected to first tube connector; A plurality of first stop valves that are arranged in the second relative side of bracing frame are connected to second tube connector.
Preferably, also comprise reservoir according to air-conditioner matching device of the present invention, this reservoir is connected to first tube connector, second tube connector and a plurality of first stop valve.
Preferably; Also comprise a plurality of the 3rd triple valves according to air-conditioner matching device of the present invention; They are arranged on first side and second side of bracing frame symmetrically, and wherein, a plurality of the 3rd triple valves that are arranged on first side of bracing frame are interconnected a plurality of first stop valves of first side; A plurality of the 3rd triple valves that are arranged on the second relative side of bracing frame are interconnected a plurality of first stop valves of second side.
Preferably, air-conditioner matching device according to the present invention also comprises: first triple valve, its three ports be connected to first tube connector, at a plurality of first stop valves and the reservoir of first side of bracing frame; And second triple valve, its three ports are connected to second tube connector, at a plurality of first stop valves and the reservoir of the second relative side of bracing frame.
Preferably, according to air-conditioner matching device of the present invention, wherein, reservoir has first ozzle and second ozzle, and these two ozzles are respectively arranged with second stop valve, and are connected to first triple valve and second triple valve through second stop valve.
Preferably, also comprise the bracing frame of each building block that holds this air-conditioner matching device and cover plate according to air-conditioner matching device of the present invention.
Preferably, air-conditioner matching device according to the present invention also comprises, wherein, connects capillary or the electric expansion valve with throttling action between every pair first stop valve.
Preferably, according to air-conditioner matching device of the present invention, wherein, first triple valve and second triple valve are welded to connect to two second stop valves through tube connector respectively.
Preferably, according to air-conditioner matching device of the present invention, wherein, the first relative side and second side of bracing frame are open.
The present invention has following technique effect:
Air-conditioner matching device according to the present invention has many to first stop valve capillaceous can be installed, and many capillaries can be installed simultaneously mate, and the number of times that this has reduced startup-shutdown has improved matching efficiency; And can between a pair of therein first stop valve electric expansion valve be installed, and utilizing electric expansion valve accurately to regulate the performance parameter of air-conditioning model machine earlier, and then capillary is mated according to it, this can improve the accuracy and the efficient of coupling.
Air-conditioner matching device according to the present invention has interim reservoir; Utilize this reservoir to carry out dynamic adjustments to the cooling medium charging amount of air-conditioning system; Only need utilize two second stop valves of reservoir just can control the increase and the minimizing of refrigerant; Can prevent in the operation that air from sneaking into system, improve the degree of purity of cooling medium charging; And when reconciling, need not to shut down, eliminated the stabilization time of start once more, improved matching efficiency; In addition, when changing capillary, can also utilize reservoir that the air in the capillary is discharged, reduce the influence of air, improve matching precision, reduce the probability of secondary coupling, thereby reduced development cost matching operation.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the present invention.These accompanying drawing diagrams some embodiments of the present invention, and be used for explaining principle of the present invention with specification.Identical in the accompanying drawings parts are represented with identical label.
Fig. 1 has shown the three-dimensional structure diagram of air-conditioner matching device according to the preferred embodiment of the invention.
The specific embodiment
Specific embodiments of the invention is elaborated with reference to the accompanying drawings.
With reference to Fig. 1, shown the three-dimensional structure diagram of air-conditioner matching device according to the preferred embodiment of the invention.As shown in the figure, the air-conditioner matching device of this preferred embodiment comprises: casing (bracing frame) 10, and it is used to hold each building block of this device; Cover plate 12; First tube connector 16, it is connected in air-conditioning internal machine; Second tube connector 18, it is connected in outdoor machine of air-conditioner.Just this air-conditioner matching device is connected in the air-conditioning system through first tube connector 16 and second tube connector 18; It is continuous simultaneously the interior machine of air-conditioning and outer machine corresponding to be connected pipeline, has just formed the coupling path that comprises this air-conditioner matching device and air-conditioning internal machine, outer machine.
The air-conditioner matching device of this preferred embodiment also comprises: reservoir 14, and it is connected to first tube connector 16 and second tube connector 18, is equipped with in the reservoir 14 and the identical refrigerant of refrigerant that will be filled in the air conditioner; Three pairs first stop valves 20,24,28,30,34,38; These first stop valves left and right symmetrically respectively are arranged in the both sides of casing 10; Three first stop valves 20,24 and 28 that wherein are arranged in first side of casing 10 are connected to second tube connector 18 and reservoir 14, and three first stop valves 30,34,38 that are arranged in the second relative side of casing 10 are connected to said first tube connector 16 and reservoir 14.The number that it should be noted that first stop valve can increase and decrease according to the coupling needs.These first stop valves 20,24,28,30,34 and 38 are used for the control connection capillary betwixt or the connected state of electric expansion valve (not shown).
Further, the air-conditioner matching device of this preferred embodiment also comprises: first triple valve 40, it is connected in first tube connector 16, and can be communicated with first stop valve 30,34,38 and reservoir 14.Second triple valve 42, it is connected in second tube connector 18, and can with first stop valve 20,24 and 28 and reservoir 14 be communicated with.
Particularly, reservoir 14 has first ozzle 52 and second ozzle 54, and the end of these two said ozzles is respectively arranged with high-pressure stop valve 44 and low-pressure shutoff valve 46 (second stop valve).Here; It should be noted that so-called high-pressure stop valve 44 and low-pressure shutoff valve 46 all are comparatively speaking, they are that pressure according to the concrete connected mode of coalignment and air-conditioning system and throttle capillary tube two ends changes; Just; When the pressure change at capillary two ends, high-pressure stop valve 44 possibly become low-pressure shutoff valve, and low-pressure shutoff valve 46 possibly become high-pressure stop valve.Be connected to first triple valve 40 and second triple valve 42 through high-pressure stop valve 44 and low-pressure shutoff valve 46, the first ozzles 52 and second ozzle 54. Second stop valve 44 and 46 is used for controlling the connected state of reservoir 14 at the coupling path.
In addition; This air-conditioner matching device further comprises four the 3rd triple valves 22,26,32 and 36; As shown in Figure 1; They are arranged in the relative both sides of casing 10 respectively symmetrically, that is: the 3rd triple valve 22 and 26 is arranged in first side of casing 10, and will coexist three first stop valves 20,24 and 28 of first side of casing 10 of these two the 3rd triple valves are interconnected; The 3rd triple valve 32 and 36 is arranged in second side of casing 10, and will coexist three first stop valves 30,34 and 38 of second side of casing 10 of these two the 3rd triple valves are interconnected.
Between aforesaid every pair first stop valve that is arranged in casing 10 opposite flanks, can connect capillary or electric expansion valve with throttling action.In the present embodiment, can between first pair first stop valve 20 and 30, connect electric expansion valve, at the capillary that connects different size between second pair first stop valve 24 and 34 and between the 3rd pair first stop valve 28 and 38 respectively.Certainly, concrete connected mode can change as required.On connecting after capillary or the electric expansion valve, and then can utilize the unlatching of first stop valve to control the capillary or the connected state of electric expansion valve.Particularly, be that example describes with first pair of stop valve 20 and 30.First stop valve 20 has connectivity port 20a and control port 20b; First stop valve 30 has connectivity port 30a and control port 30b similarly; The two ends of electric expansion valve are connected to two connectivity port 20a and 30a; And hexagonal (not shown) in being provided with among two control port 20b and the 30b just can be controlled the unlatching of first stop valve 20 and 30 through screwing interior hexagonal (seal that is used for stop valve), and then controls the connected state of electric expansion valve.Therefore in this device, the structure of each stop valve all is identical with mode of operation, just no longer has been repeated in this description concrete structure and the mode of operation of other stop valve hereinafter.
In addition; First triple valve 40 is connected to high-pressure stop valve 44 and low-pressure shutoff valve 46 (second stop valve) through tube connector 48 and 50 respectively with said second triple valve 42; Wherein the two ends of tube connector 48 are welded to first triple valve 40 and high-pressure stop valve 44 respectively, and the two ends of tube connector 50 are welded to second triple valve 42 and low-pressure shutoff valve 46 respectively.Except the welding manner of this preferred embodiment, can also adopt other air-tightness connected mode, for example with being threaded of sealing ring etc.
Preferably, as shown in the figure, two opposite flanks of casing 10 are open, can the handled easily personnel be operated and regulate by this air-conditioner matching device like this.
Below, the concrete course of work of this air-conditioner matching device is described.
This device is connected to air-conditioning system and inserts electric expansion valve and capillary; Interior hexagonal in first stop valve 20,24,28,30,34 and 38 control port is separately tightened; Thereby electric expansion valve and capillary are isolated from the outside, and then utilize vavuum pump that whole matching system (comprising the inside and outside machine of air-conditioning and this air-conditioner matching device) is vacuumized.When carrying out the capillary match and regulate, the high-pressure stop valve 44 and the low-pressure shutoff valve 46 of reservoir 14 to be closed, disconnection reservoir 14 is connected with air-conditioning system.When carrying out the coupling of cooling medium charging amount, open high-pressure stop valve 44 and low-pressure shutoff valve 46, make reservoir 14 be connected into air-conditioning system.Should note; Should be before reservoir 14 being mounted to matching system with air emptying wherein; And the internal pressure when reservoir 14 pressure inside should be shut down with the air-conditioning model machine that will mate is approaching; Specifically should remain within the pressure limit according to designing requirement, promptly reservoir 14 pressure inside should not be higher than the high pressure of this particular pressure range, should not be lower than the low pressure of this particular pressure range yet.In addition, before being installed to reservoir 14 in this air-conditioner matching device, also to measure and record the initial weight of reservoir 14.
Carry out the capillary coupling when (capillary is used for the refrigerated medium heat of air-conditioning is carried out throttling control), only open a pair of first stop valve at every turn.For example can at first open first pair first stop valve 20 and 30, utilize electric expansion valve that the combination property of air-conditioning system is mated accurately earlier, after meeting design requirement; Close first stop valve 20 and 30, open second pair first stop valve 24 and 34, the capillary that is connected between them is mated; If mate defective; Can close this a pair of first stop valve 24 and 34 again, open the 3rd pair first stop valve 28 and 38, the capillary of another size is mated.Accomplish coupling if the capillary of this size coupling is qualified, if capillary defective then that need change other size matees.When changing the time capillaceous,, and install the capillary of new size with the capillary removal on first stop valve of having closed.After more finishing changing capillary; Open any (for example first stop valve 24 being opened) in first stop valve at the capillary two ends in the new connection through control port 24b; And the connectivity port 24a that will link to each other with the other end capillaceous unscrews, and utilizes the refrigerant in the reservoir 14 that the air in the capillary of this new replacing is discharged, and tightens connectivity port 24a subsequently; Guarantee that the capillary two ends do not leak, and first stop valve at capillary two ends is all opened.So just accomplished once replacing capillaceous, in this replacing process, air-conditioning need not to shut down, and has eliminated the stabilization time after air-conditioning is started shooting once more, and because the effect of first stop valve makes that not having extraneous air in the replacing process gets into.
When carrying out the adjusting of cooling medium charging amount; Increase the cooling medium charging amount if desired; Then open second stop valve of the reservoir 14 of capillary low pressure one end that is connected into the coupling path, for example low-pressure shutoff valve 46, and the cold media gas in the reservoir 14 is got in the air-conditioning system; When needs reduce the cooling medium charging amount, just open second stop valve of the reservoir 14 of capillary high pressure one end, for example high-pressure stop valve 44, and the cold media gas in the air-conditioning system is got in the reservoir 14.Through the various performance parameters of real-time monitored air-conditioning, constantly regulate (increase or reduce) cooling medium charging amount, till the performance that finally reaches the designing institute expectation.This mode of utilizing the cooling medium charging amount in 14 pairs of air-conditioning systems of reservoir to regulate; Not only can control the groundwater increment of refrigerant accurately; And prevent to increase or make the probability of air entrained gas when reducing refrigerant, and need not shutdown operation, thereby eliminated the stabilization time of start back air-conditioning once more; Simplify the step of matching operation, improved matching efficiency.
After the coupling of cooling medium charging amount finishes; Weight to reservoir 14 is carried out weighing; The difference of reservoir 14 weight when relatively initial weight finishes with coupling; This difference (recruitment or reduction) is counted in the initial cooling medium charging amount of the air-conditioning model machine that is mated, thereby can confirm the cooling medium charging amount that the air-conditioning of model therewith matees most.
Above-mentioned is exactly to utilize the air-conditioner matching device of this preferred embodiment to carry out capillary coupling and the flux matched detailed process of cooling medium charging, and in fact, these two processes are not to carry out according to sequencing, but carry out according to actual match situation intersection.Just should note having only a pair of unlatching in three pairs first stop valves, and at this moment two second stop valves 44 of reservoir 14 closing with 46, just reservoir 14 is being isolated and mate outside the path carrying out capillary when coupling.And carrying out cooling medium charging when flux matched, just need two second stop valves 44 and 46 of reservoir 14 be regulated, to increase or to reduce the cooling medium charging amount in the air-conditioning system.In addition, also should pay special attention to, when changing capillary, need temporarily use reservoir 14, just as described above mode with the air emptying in the new capillary.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. air-conditioner matching device comprises:
First tube connector (16) is connected in air-conditioning internal machine; And
Second tube connector (18) is connected in outdoor machine of air-conditioner,
It is characterized in that, further comprise:
Many to first stop valve (20,24,28,30,34,38), be arranged in the relative both sides of bracing frame (10) symmetrically, wherein:
A plurality of said first stop valve (30,34,38) that is arranged in first side of bracing frame (10) is connected to said first tube connector (16);
A plurality of said first stop valve (20,24,28) that is arranged in the second relative side of bracing frame (10) is connected to said second tube connector (18).
2. air-conditioner matching device according to claim 1; It is characterized in that; Said device further comprises reservoir (14), is connected to said first tube connector (16), said second tube connector (18), and a plurality of said first stop valve (20,24,28,30,34,38).
3. air-conditioner matching device according to claim 1 is characterized in that, said device further comprises a plurality of the 3rd triple valves (22,26,32,36), is arranged on said first side and said second side of bracing frame (10) symmetrically, wherein:
A plurality of said the 3rd triple valve (22,26) that is arranged on first side of bracing frame (10) is interconnected a plurality of said first stop valve (20,24,28) of said first side;
A plurality of said the 3rd triple valve (32,36) that is arranged on the second relative side of bracing frame (10) is interconnected a plurality of said first stop valves of said second side (30,34,38).
4. air-conditioner matching device according to claim 2 is characterized in that, said device further comprises:
First triple valve (40), its three ports be connected to said first tube connector (16), at a plurality of said first stop valve (30,34,38) and the said reservoir (14) of first side of bracing frame (10); And
Second triple valve (42), its three ports be connected to said second tube connector (18), at a plurality of said first stop valve (20,24,28) and the said reservoir (14) of the second relative side of bracing frame (10).
5. air-conditioner matching device according to claim 4; It is characterized in that; Said reservoir (14) has first ozzle (52) and second ozzle (54); These two said ozzles are respectively arranged with second stop valve (44,46), and are connected to said first triple valve (40) and said second triple valve (42) through said second stop valve (44,46).
6. air-conditioner matching device according to claim 1 and 2 is characterized in that, said device further comprises the bracing frame (10) of each building block that holds said air-conditioner matching device, and cover plate (12).
7. air-conditioner matching device according to claim 1 is characterized in that, connects capillary or the electric expansion valve with throttling action between every pair of said first stop valve (20,30).
8. air-conditioner matching device according to claim 5 is characterized in that, said first triple valve (40) and said second triple valve (42) are welded to connect to said second stop valve (44,46) through tube connector (48,50) respectively.
9. air-conditioner matching device according to claim 6 is characterized in that, relative said first side and said second side of support frame as described above (10) are open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810220365XA CN101749899B (en) | 2008-12-20 | 2008-12-20 | Air conditioner matching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810220365XA CN101749899B (en) | 2008-12-20 | 2008-12-20 | Air conditioner matching device |
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| CN101749899A CN101749899A (en) | 2010-06-23 |
| CN101749899B true CN101749899B (en) | 2012-06-27 |
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| CN200810220365XA Expired - Fee Related CN101749899B (en) | 2008-12-20 | 2008-12-20 | Air conditioner matching device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102141483A (en) * | 2010-11-16 | 2011-08-03 | 苏州恒兆空调节能科技有限公司 | Air conditioning testing and regulating device and method |
| CN103836850B (en) * | 2012-11-20 | 2016-05-11 | 珠海格力电器股份有限公司 | Capillary tube matching tool |
| CN103291969A (en) * | 2013-06-18 | 2013-09-11 | Tcl空调器(中山)有限公司 | Air-conditioner performance adjustment connecting structure and device and method for adjusting air-conditioner performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278183Y (en) * | 1996-06-07 | 1998-04-08 | 青岛海尔空调器有限总公司 | Throttle device for one-driving-two air conditioner |
| CN2672527Y (en) * | 2003-12-22 | 2005-01-19 | 河南新飞电器有限公司 | Fixed frequency one draging more air conditioner |
| CN2786504Y (en) * | 2005-04-06 | 2006-06-07 | 广东科龙电器股份有限公司 | Adaptive variable throttle air conditioner |
| CN201173527Y (en) * | 2008-02-18 | 2008-12-31 | 珠海格力电器股份有限公司 | Air conditioner matching device |
-
2008
- 2008-12-20 CN CN200810220365XA patent/CN101749899B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278183Y (en) * | 1996-06-07 | 1998-04-08 | 青岛海尔空调器有限总公司 | Throttle device for one-driving-two air conditioner |
| CN2672527Y (en) * | 2003-12-22 | 2005-01-19 | 河南新飞电器有限公司 | Fixed frequency one draging more air conditioner |
| CN2786504Y (en) * | 2005-04-06 | 2006-06-07 | 广东科龙电器股份有限公司 | Adaptive variable throttle air conditioner |
| CN201173527Y (en) * | 2008-02-18 | 2008-12-31 | 珠海格力电器股份有限公司 | Air conditioner matching device |
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