CN102893096B - For the system and method for filled HVAC system - Google Patents
For the system and method for filled HVAC system Download PDFInfo
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- CN102893096B CN102893096B CN201180013756.4A CN201180013756A CN102893096B CN 102893096 B CN102893096 B CN 102893096B CN 201180013756 A CN201180013756 A CN 201180013756A CN 102893096 B CN102893096 B CN 102893096B
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- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000012360 testing method Methods 0.000 claims abstract description 97
- 239000007788 liquid Substances 0.000 claims abstract description 87
- 239000003507 refrigerant Substances 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241001247821 Ziziphus Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/001—Charging refrigerant to a cycle
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A kind of method that relation of liquid line temperature, the suction line pressure of HVAC system and the outdoor environment temperature of HVAC system by determining HVAC system fills this HVAC system.A kind of by regulating the amount of the cold-producing medium in HVAC system with the method filled this HVAC system close to the minimum liquid line temperature of target.A kind of by testing HVAC system according at least three group test parameters, two groups in three groups of test parameters be included in roughly the same outdoor environment temperature under test HVAC system, at least one groups in all the other group test parameters be included in different outdoor environment temperatures under test HVAC system and method that this HVAC system is filled.
Description
Background technology
Heating, ventilation and air handling system (HVAC system) use cold-producing medium cool in thermodynamic process and/or add hot fluid, the temperature in the space served for regulating HVAC system and/or humidity.Some HVAC system comprise the refrigeration system closed in fact, and when comprising the cold-producing medium of specified quantitative in the refrigeration system that this is closed in fact, its performance is better.The good required cold-producing medium of this specified quantitative of specific HVAC system performance or " charging amount " of so-called cold-producing medium depend on capacity and/or the structure of the various assembly of the HVAC system accepting cold-producing medium, comprise any refrigerant lines of the various assemblies for connecting HVAC system.As everyone knows, in the process of installation, maintenance and/or maintenance HVAC system, some HVAC system need to regulate the amount of the cold-producing medium retained in HVAC system and/or charging amount.
Have much well-known methods to HVAC system the supply system cryogen (or method of " filling " HVAC system), although these methods are by strict implement, existing method still accurately cannot fill HVAC system.The method of some well-known filled HVAC system comprises and mainly fills HVAC system based on cold-producing medium weight, crosses cold regulation HVAC system charging amount in response to what measure, and in response to the mistake heat regulation HVAC system charging amount measured.The environment run due to HVAC system (namely, temperature, humidity and/or other environmental factor), the physical arrangement that supposes compared to these methods due to the physical arrangement of HVAC system when actual installation (, the inter-module of regulation apart from and/or the component height of regulation poor) change and/or due to the operation that supposes compared to these methods in HVAC system actual motion (namely, regulation throughput through particular heat exchanger is provided) change, the above listed method filled HVAC system possibly cannot fill HVAC system rightly.
Summary of the invention
In some embodiments provide a kind of by the method measuring the liquid line temperature of HVAC system, relation between the suction line pressure of HVAC system and the outdoor environment temperature of HVAC system fills HVAC system.
Provide a kind of by regulating refrigerant amount in HVAC system with the method filled HVAC system close to the minimum liquid line temperature of target in further embodiments.
A kind of method that HVAC system is filled is embodiments provides also having some, the method comprises tests HVAC system according at least three group test parameters, two groups in three groups of test parameters be included in roughly the same outdoor environment temperature under test HVAC system, all the other group test parameters at least one groups be included in different outdoor environment temperatures under test HVAC system.
Accompanying drawing explanation
In order to more completely understand the present invention and its advantage, existing by reference to the accompanying drawings with detailed description with reference to following concise and to the point description, wherein identical Reference numeral represents identical parts.
Fig. 1 is the schematic diagram of HVAC system according to an embodiment of the invention;
Fig. 2 marks and draws the simplified diagram having number of test points certificate;
Fig. 3 illustrates that the difference of tested HVAC system fills the figure of curve;
Fig. 4 is for filling chart, and it illustrates the minimum liquid line temperature of various targets according to outdoor environment temperature and suction line pressure;
Fig. 5 is the simplified flow chart of the method that filled HVAC system is shown; And
Fig. 6 A-6D is the filled chart of the various piece for further illustrating method described in Fig. 5.
Detailed description of the invention
Even if the method for some filled HVAC system also cannot fill HVAC system rightly when these methods of strict implement.In addition, some HVAC system continue to run barely satisfactoryly, even if these HVAC system do not have charging refrigerant rightly.Such as, some comprise sour jujube fin heat exchanger and/or other HVAC system with the heat exchanger of roughly traditional total refrigerant charge still can continue to run, although not too effective according to crossing under cold filled method fills the state (higher than best refrigerant amount) that excessively fills or filled not enough state (lower than best refrigerant amount) caused.
But some HVAC system comprising micro channel heat exchanger are then unlikely when appropriately not filling to be run barely satisfactoryly, even charging amount only a little more than or a little less than suitable refrigerant amount.Therefore, a kind of system and method improving the filled HVAC system of filled HVAC system precision is needed.In addition, for the HVAC system comprising micro channel heat exchanger, same needs can be more eager.The invention provides the appropriate system and method filling HVAC system, it reaches the minimum liquid line temperature of target by regulating the charging amount of HVAC system, and by mainly using suction line pressure and outdoor environment temperature to determine reach the minimum liquid line temperature of which kind of target as feedback.
Fig. 1 illustrates HVAC system 100, and it is configured to allow to fill HVAC system 100 according to filled method disclosed here.HVAC system 100 generally includes indoor unit (or evaporator unit) 102 and outdoor unit (or condensing unit) 104.Indoor unit 102 comprises indoor heat converter (or evaporator coil) 106, blower fan 108 and cold-producing medium current limiter 110.Outdoor unit 104 comprises coolant compressor 112, outdoor heat converter (or condenser coil) 114, blower fan 116, low tension switch 118 and high-voltage switch gear 120.The most normally, the output of indoor heat converter 106 is connected to the input of compressor 112 by suction line 122.In the present embodiment, suction service valve 124 is configured to optionally allow cold-producing medium flowed into by suction line pressure tap 126 and flow out suction line 122.
In addition, fill mouth 128 to be configured to optionally to allow cold-producing medium to pass through filled mouth 128 and to flow into and flow out suction line 122.Fill mouth 128 and can be equipped with check-valves, such as, like Rider valve (Schradervalve), flow through filled mouth 128 optionally to allow fluid.The cold-producing medium of compressor 112 exports the input being connected to outdoor heat converter 114 by discharge pipe 130.The output of heat exchanger 114 is connected to the input of current limiter 110 by liquid line 132.In the present embodiment, liquid line service valve 134 is configured to optionally allow cold-producing medium to be flowed into and trickle pipeline 132 by liquid line pressure tap 136.The output of current limiter 110 is connected to the input of indoor heat converter 106.
In certain embodiments, HVAC system 100 also comprises: suction line pressure gauge 138, and it is configured to determine and/or show the refrigerant pressure in suction line 122; Liquid manometer 140, it is configured to determine and/or show the refrigerant pressure in liquid line 132; Liquid line temperature meter 142, it is configured to the temperature determining and/or show liquid line 132; And environment temperature sensor 144, it is configured to the instant environment temperature measured and/or show around outdoor unit 104.In certain embodiments, the position of environment temperature sensor 144 is selected to improve the mode being subject to outdoor unit 104 to run the measurement of the ambient temperature affected.In certain embodiments, the maximum isolation distance between environment temperature sensor 144 and outdoor unit 104 (that is, outdoor heat converter 114) is about 6 inches or less.HVAC system 100 also comprises indoor temperature transmitter 148, and it is configured to determine and/or show the indoor environment temperature be associated with indoor unit 102.
In certain embodiments, HVAC system 100 is installed to be: the cold-producing medium of input indoor unit 102 (namely, liquid line 132 is typically connected to the part of indoor unit 102) can be positioned vertically to be offset from the cold-producing medium (that is, liquid line 132 is typically connected to the part of outdoor unit 104) that unit 104 outdoor exports.This vertical shift between the input of this liquid line 132 and the output of liquid line 132 is commonly referred to range of lift 146.This range of lift 146 is considered to the specific installation environment depending on HVAC system 100 usually.Such as, when outdoor unit 104 is roughly seated ground level, when indoor unit 102 is also roughly arranged on ground level, this range of lift 146 is negligible.But, in the installation of HVAC system 100, when outdoor unit 104 is roughly seated ground level and indoor unit 102 to be arranged on above ground level (that is, two layers or more high-rise of building and/or be placed in the attic of building) just, range of lift 146 will be very large.In certain embodiments, range of lift 146 can have the value of about 0 to about 50 feet, also can be about 0 to about 30 feet, or other numerical value.Range of lift 146 shown in Fig. 1 is illustrated as and is positioned to vertically higher than caused by outdoor unit 104 by indoor unit 102, and in certain embodiments, range of lift 146 also can be positioned to vertically higher than caused by indoor unit 102 by outdoor unit 104.
In addition, in certain embodiments, when every bar suction line 122 and liquid line 132 have necessary length usually in order to indoor unit 102 is connected to outdoor unit 104, every bar suction line 122 is usually roughly the same with the length of liquid line 132.Every bar suction line 122 and liquid line 132 must extend to and realize above-mentioned value indoor unit 102 being connected to so-called overall " length of pipeline " of outdoor unit 104 for being less than 10 feet to about 200 feet, also can be less than 10 feet to about 60 feet, or indoor unit 102 is connected to outdoor unit 104 other suitable length necessary.
In the embodiment of some HVAC system 100, at least one in indoor heat converter 106 and outdoor heat converter 114 is so-called " microchannel " heat exchanger.Micro channel heat exchanger can be U.S. Patent Publication No. is type disclosed in 2005/0269069A1, and it belongs to Shi Difen S Chinese cock (StephenS.Hancock), be published on December 8th, 2005, and entirety is quoted as a reference.Will be appreciated that, compared with the embodiment not comprising micro channel heat exchanger with HVAC system 100, at least one in indoor heat converter 106 and outdoor heat converter 114 is in the embodiment of HVAC system 100 of micro channel heat exchanger, and it is very crucial for filling suitable refrigerant amount for the expected performance realizing HVAC system 100 to HVAC system 100.Compared with the heat exchanger of such as other type of so-called " sour jujube fin coil pipe " heat exchanger, the operation susceptibility of the HVAC system 100 of above-mentioned increase is at least partly because micro channel heat exchanger has significantly less internal capacity to hold cold-producing medium.As hereafter explained in more detail, HVAC system 100 can fill according to one or more filled methods described here.
The most general, HVAC system provided by the invention fills method and allows HVAC system, include but not limited to the HVAC system of such as HVAC system 100, to reach for the purpose of the minimum liquid line temperature of target, refrigerant charge mainly through changing HVAC system fills HVAC system, and wherein the minimum liquid line temperature of target is determined according to outdoor environment temperature and suction line pressure.The most general, the various pattern of indoor unit 102 and outdoor unit 104 and/or the difference be combined on operational and/or equipment of change can cause the minimum liquid line temperature of target of a HVAC system of first combination with indoor unit 102 and outdoor unit 104 to be different from the minimum liquid line temperature of target of the different HVAC system of second combination with indoor unit 102 and outdoor unit 104.Therefore, should be appreciated that first the method filled HVAC system more disclosed herein needs to determine one group of minimum liquid line temperature of target recommended for specific HVAC system 100.In other words, although should be appreciated that different HVAC system 100 can fill according to said method, different HVAC system 100 can need to fill according to the minimum liquid line temperature value of different targets, even when the service condition of different HVAC system, outdoor environment temperature and/or suction line pressure are all roughly the same.Thus, the method for some filled HVAC system 100 can comprise and determines the minimum liquid line temperature value of multiple target according to the outdoor environment temperature of HVAC system 100 and suction line pressure.
The most general, for any specific HVAC system, multiple target minimum liquid line temperature value can be determined according to the outdoor environment temperature of specific HVAC system and suction line pressure.Such relation can successfully and predictably be utilized, this is because suction line pressure and outdoor environment temperature (that is, suction line pressure gauge 138 and environment temperature sensor 144 are measured respectively) are found to be with the operation of HVAC system and/or affect the environmental factor in fact independently function that HVAC system runs.In other words, suction line pressure and outdoor environment temperature, although be not completely independently function in certain embodiments, any interdependency between suction line pressure and outdoor environment temperature is all inappreciable actually and/or statistically.In particular, have been found that foresight and/or the statistical marked change of the uninevitable corresponding outdoor environment temperature of the change of suction line pressure, similar, the foreseeable and/or statistical marked change of the change of outdoor environment temperature also inevitable corresponding suction line pressure.Above-mentioned discovery combines and further finds, namely liquid line temperature (namely, measured by liquid line temperature meter 142) be roughly foreseeable based on suction line pressure and outdoor environment temperature, the generation and the useful enforcement that allow for multiple target above-mentioned minimum liquid line temperature value provide condition.
In one embodiment, the minimum liquid line temperature value of target can be determined by testing HVAC system under at least three set conditions.Should be appreciated that, HVAC system test described here can be utilization experiment, implemented simultaneously by simulation and/or both and completed.The most general, the first test of HVAC system can be implemented according to first group of operational factor, implements the first test under being included in the first selected outdoor environment temperature.As the result according to first group of operational factor test HVAC system, the first test is intended to determine outdoor environment temperature, functional relation between suction line pressure and liquid line temperature.Then, same HVAC system is tested according to second group of operational factor, the second test is implemented under being included in the first selected outdoor environment temperature, wherein second group of operational factor is selected for bringing different suction line force value as a result, although employ identical outdoor environment temperature in the first test and the second test.Should be appreciated that, any too much service condition can be changed to produce above-mentioned different suction line pressure result between the first test and the second test, include but not limited to, change the air-flow by indoor heat converter 106, change the air-flow by outdoor heat converter 114, change the refrigerant flow rate by compressor 112, change the environmental condition (indoor environment temperature such as by indoor temperature transmitter 148 measured) relevant with indoor unit 102, change range of lift 146, change the length of suction line 122, change the length of liquid line 132 and/or any known other variablees many that the suction line pressure of HVAC system is exerted one's influence.No matter change in many variablees between the first test with the second test which, the first and second tests are shared and are made the first test test with second the operation variable run under the first identical outdoor environment temperature.Finally, the 3rd test runs according to the 3rd group of operational factor, and the outdoor environment temperature of wherein the 3rd test is not equal to the outdoor environment temperature value used in the first test and the second test.
First test, second test and the 3rd test in each test be all configured at least gather the data relevant to suction line pressure, outdoor environment temperature and liquid line temperature, wherein suction line pressure-responsive in one or more operational factor change and change.Equally, each test in the first test, the second test and the 3rd test can be summarised as the data point at least providing and use in cartesian coordinate chart 200, and as shown in Figure 2, suction line pressure is in X-axis, and liquid line temperature is in Y-axis.First test point 202 is selected and is applied to chart 200 from the test data of the first test.Second test point 204 is selected and is applied to chart 200 from the test data of the second test.Because the first test completes with each personal identical outdoor environment temperature of the second test, the first outdoor environment temperature and the linear relation between liquid line temperature and suction line pressure are rendered as the first outdoor environment temperature line 206 of each test point approximately passed through in the first test point 202 and the second test point 204 on chart 200.3rd test point 208 with the suction line pressure roughly similar to the first test point 202 is selected and is applied to chart 200 from the 3rd test data of testing.To test from first because the 3rd test uses and second test different outdoor environment temperatures and implement, and because suction line pressure, intrinsic relation between liquid line temperature and outdoor environment temperature are functions consistent substantially, the second outdoor environment temperature line 210 is rendered as and was not only roughly parallel to the straight line of the first outdoor environment temperature line 206 through the 3rd test point 208 on chart 200.
Above-mentioned discussion relates to determines that specific function and/or equation are expressed liquid line temperature at large and changed with outdoor environment temperature and suction line pressure, and the estimation being provided as the liquid line temperature of result provides guidance to be well-suited for filled HVAC system.Should be appreciated that, other equation, function and/or relation can be determined from the data of collecting according to the first test, the second test and the 3rd test.In other embodiments, may higher or lower than the estimation provided by said method to the accuracy of the estimation of liquid line temperature, the estimation simultaneously in response to liquid line temperature still can fill HVAC system effectively.Although the foregoing describe use three tests to determine these relations, it is to be understood that also can apply more than three tests to determine relation.
In certain embodiments, above-mentioned first test, the second test and the 3rd test can be implemented, such as but not limited to the test of record in the test recorded in the 10CFR430 annex M that USDOE (DOE) describes in federal law draft and/or air-conditioning heating and refrigerating association of the U.S. (AHRI) standard 210/240 according to so-called " B ", " C " and " A " test in roughly standardized test method substantially respectively.Therefore, determining above-mentioned for estimating that liquid line temperature can obtain by testing with the necessary information of relation of outdoor environment temperature and the change of suction line pressure and/or data, also needing on the other hand to carry out these tests to obtain satisfied class of trade certification.According to the B of at least one defined in the test recorded in the test recorded in the 10CFR430 annex M that USDOE describes in federal law draft and/or U.S.'s air-conditioning heating and refrigerating association criterion 210/240, C and A tests, the outdoor environment temperature that B test (or first test) is implemented is 82 ℉, Indoor Dry bulb temperature is 80 ℉, indoor wet-bulb temperatures is 67 ℉, the outdoor environment temperature that C test (or second test) is implemented is 82 ℉, Indoor Dry bulb temperature is 80 ℉, indoor wet-bulb temperatures is 57 ℉ or lower (such as the indoor wet-bulb temperatures of about 47 ℉), the outdoor environment temperature that A test (or the 3rd test) is implemented is 95 ℉, Indoor Dry bulb temperature is 80 ℉, indoor wet-bulb temperatures is 67 ℉.
According to above-mentioned data and liquid line temperature, the relation set up between suction line pressure and outdoor environment temperature, any one in multiple equation can be derived to express liquid line temperature according to outdoor environment temperature and suction line pressure.In one embodiment, derive according to the equation of outdoor environment temperature and suction line temperature estimation liquid line temperature as follows:
Liquid line temperature=(a* outdoor environment temperature)+(b* suction pressure)+c, herein,
And constant c determines from the first test, the second test and the 3rd test result of testing.
Should be appreciated that, no matter from carrying out finally obtaining which type of function and/or equation above-mentioned three tests, function as a result and/or equation may be used for the chart and/or the numerical matrix that generate the minimum liquid line temperature of target, and the minimum liquid line temperature of target calculates according to outdoor environment temperature and may combining of suction pressure here.Equally, above-mentioned discovery can be refined in certain embodiments to be reduced to and be used figure and/or chart, and this figure and/or chart can instruct HVAC system setter and/or technical staff suitably to fill HVAC system.
Referring now to Fig. 3, it illustrates filled Figure 30 0 of the filled curve according to said process structure.Especially, Figure 30 0 is undertaken testing generating by selecting specific HVAC system, according at least one in the test recorded in the test recorded in the 10CFR430 annex M that USDOE describes in federal law draft and/or U.S.'s air-conditioning heating and refrigerating association criterion 210/240, HVAC system being tested, meeting the needs carried out as determining necessary first test of liquid line temperature, functional relation between suction line pressure and outdoor environment temperature, the second test and the 3rd test simultaneously.Collecting test data and after applying above-mentioned equation, can construct filled Figure 30 0 easily, to be applied in cartesian coordinate system by many filled curves 302, wherein X-axis represents suction line pressure, and Y-axis represents liquid line temperature.These filled curves 302 have the increment of 5 ℉.
Referring now to Fig. 4, filled chart 400 can be constructed, as filled Figure 30 0 and/or the result of at least one applied in above-mentioned equation, be used for according to suction line pressure and outdoor environment temperature determination liquid line temperature.Fill chart 400 to comprise by the numerical matrix be distributed in multiple row and column.By referring to filled chart 400, the minimum liquid line temperature of target can be determined according to suction line pressure (being expressed as row) according to outdoor environment temperature (being expressed as row).Fill chart 400 and also comprise the maximum hydraulic pressure row arranging from different outdoor environment temperature and be associated, and should by the maximum hydraulic pressure filled when providing HVAC system on this pressure.Should be appreciated that, although the form filling the row that chart 400 is depicted as the row that comprise and being associated with outdoor environment temperature and joins with suction line pressure correlation illustrates, in alternative embodiments, these row also can join with suction line pressure correlation, and these row also can be associated with outdoor environment temperature simultaneously.
Referring now to Fig. 5 and Fig. 6 A-6D, it illustrates the method for simplifying of filled HVAC system, should be appreciated that, Fig. 5 describes a kind of filled method, and how Fig. 5 and relevant discussion, with further reference to Fig. 6 A-6D, perform the method for Fig. 5 as further elaboration.
The method 500 of the filled HVAC system 100 shown in Fig. 5 starts from block 502, the most common, by measuring outdoor environment temperature, suction line pressure, liquid line temperature and liquid line pressure, method 500 allows HVAC system 100 suitably to be filled, though when other filled method (such as excessively cold) may failure time also can be like this.Guiding setter and/or technical staff, by the maximum liquid line pressure of the minimum liquid line temperature of target that is filled to filled chart or filled chart (get its first reach), are filled HVAC system 100 by method 500.
Method 500 starts from block 502, and proceeds to block 504.In block 504, indoor environment temperature and outdoor environment temperature are examined to verify that these temperature are allowing suitably to fill in the prescribed limit of HVAC system 100 according to method 500.In certain embodiments, outdoor environment temperature needs at about 60 ℉ or more, and indoor environment temperature needs between about 70 ℉ and 100 ℉.If indoor environment temperature is not in prescribed limit, indoor environment temperature should be made to change to before continuation method 500 consistent with prescribed limit.If outdoor environment temperature is lower than 60 ℉, HVAC system 100 can use the suction line pressure of 60 ℉ and 115 pounds/square inch (PSIG) to fill according to filled chart.
In block 506, HVAC system 100 should make it stablize by running minimum about 10 minutes in cooling mode.
In block 508, each in outdoor environment temperature, suction line pressure, liquid line pressure and liquid line temperature should be measured.
In block 510 an, the filled chart (see Fig. 6 A, wherein the example digital of outdoor unit 104 is illustrated, and it is circled at the top of filled chart) being suitable for HVAC system 100 should be selected.
In block 512, the outdoor environment temperature recorded should be located along the top of selected filled chart (see Fig. 6 A, the outdoor environment temperature supposition wherein recorded is 97 ℉).
In block 514, the suction line pressure recorded should along the left positioner of filled chart (see Fig. 6 B, the suction line pressure wherein recorded be assumed to 130PSIG).
In block 516, the minimum liquid line temperature of target should be confirmed as the outdoor environment temperature recorded be positioned on filled chart and the crosspoint place (see Fig. 6 C) being positioned at the suction line pressure recorded on filled chart.
In block 518, list between temperature if the minimum liquid line temperature of target to drop on filled chart two, the minimum liquid line temperature of target (see Fig. 6 C, the minimum liquid line temperature of target of estimation is assumed to 107 ℉) should be estimated.
In block 520, maximum liquid line pressure should be positioned at (see Fig. 6 D) on filled chart.
In block 522, if the minimum liquid line temperature of target is estimation, also should estimate maximum liquid line pressure (see Fig. 6 D, the maximum liquid line pressure wherein estimated is assumed to 414PSIG) similarly.
In block 524, should determine and provide any required charging amount adjustment.Undertaken this determine by comparing the liquid line temperature that records and the minimum liquid line temperature of target.If the liquid line temperature recorded is on the minimum liquid line temperature of target, and do not exceed maximum permission liquid line pressure, cold-producing medium should be added to HVAC system 100.If the liquid line pressure recorded, higher than maximum permission liquid line pressure, should remove cold-producing medium from HVAC system 100.In addition, if the liquid line temperature recorded is lower than the minimum liquid line temperature of target, cold-producing medium should be removed from HVAC system 100.
In order to add cold-producing medium to HVAC system 100, liquid refrigerant should be added in HVAC system, until the minimum liquid line temperature of liquid line temperature distance objective recorded is in 1 to 2 ℉ by filling mouth 128.In the alternate embodiments of HVAC system 100 not comprising filled mouth 128, cold-producing medium can be added by suction line pressure tap 126.
In block 526, HVAC system 100 should be stablized to make it by running HVAC system in cooling mode again for 100 at least 10 minutes.
After HVAC system 100 is stable, method 500 stops at block 528.
Should be appreciated that, method 500 should repeat at block 524 place, until do not need to do charging amount adjustment.
Should be appreciated that further, the method that any one disclosed herein fills HVAC system may be used to filled so-called heat pump HVAC system, and without the HVAC system of heat pump and/or other routine.
Disclosed at least one embodiment, in the art technical staff for embodiment and/or embodiment feature done by change, combination and/or amendment all fall within the scope of the invention.By combination, integrated and/or omit some feature of embodiment and the alternate embodiments that draws also all falls within the scope of the invention.In the situation expressing statement digital scope or restriction, the scope so expressed or limit and should be understood to: (such as, from about 1 to about 10 just comprises 2,3,4 etc. to comprise the scope repeatedly of the similar value falling into expressed stated ranges or in limiting or restriction; Be greater than 0.10 and just comprise 0.11,0.12,0.13 etc.).Such as, as long as disclose lower limit R1 and the upper limit Ru of digital scope, any numeral so fallen within the scope of this is just specifically disclosed.Especially, following numeral within the scope of this is disclosed especially: R=R1+k × (Ru-R1), wherein, the variable that k is is increment change from 1% to 100% with 1%, that is, k is 1%, 2%, 3%, 4%, 5% ... 50%, 51%, 52% ... 95%, 96%, 97%, 98%, 99% or 100%.In addition, also just specifically disclosed by any digital scope of two R definition defined above.Key element for any claim uses term " alternatively ", and refer to and need this key element or alternatively do not need this key element, two kinds of substitute modes are all within the scope of claim.Use the term of broad sense such as comprising, comprise and have and so on should be understood to be to provide support to the comparatively narrower terms such as what being made up of, being mainly made up of what and to be roughly made up of and so on what.Therefore, protection domain does not limit by the above place of matchmakers set forth, but is defined by attached claims, and this scope comprises all equivalents of claim theme.Each and each claim are brought in this description as disclosing further, and claims are embodiments of the invention.
Claims (5)
1. a method for filled HVAC system, comprising:
The HVAC system comprising micro channel heat exchanger is provided;
The liquid line temperature of this HVAC system, relation between the suction line pressure of this HVAC system and outdoor environment temperature is determined in response to testing this HVAC system according at least three set conditions, two groups in these condition groups comprise and test this HVAC system with identical outdoor environment temperature, and in residue condition group at least one group comprises and test this HVAC system with different outdoor environment temperatures;
Generate the filled chart based on determined relation, this chart comprises the minimum liquid line temperature value of display-object selected separately according at least one display suction line force value and at least one display room external environment temperature value;
Measure the suction line pressure of this HVAC system;
Measure outdoor environment temperature;
Show the minimum liquid line temperature value of display-object be associated with the suction line pressure of measurement and the outdoor environment temperature of measurement; And
Adjust the refrigerant charge of this HVAC system, until this HVAC system is with at least minimum liquid line temperature value operation of display-object.
2. method according to claim 1, is characterized in that, also comprises:
Generate the equation for estimating the minimum liquid line temperature value of display-object, wherein this equation is based on determined relation.
3. method according to claim 1, is characterized in that, also comprises:
Generate multiple filled curve based on determined relation;
Wherein every bar fills curve and is associated with independent display room external environment temperature value.
4. method according to claim 1, it is characterized in that, this filled chart comprises matrix, and at least one in the minimum liquid line temperature value of wherein said display-object is positioned at the crosspoint of display suction line force value row and display room external environment temperature value row.
5. method according to claim 1, it is characterized in that, this filled chart comprises matrix, and at least one in wherein said display-object minimum liquid line temperature value is positioned at the crosspoint that display suction line force value arranges and display room external environment temperature value is capable.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/723,660 | 2010-03-14 | ||
| US12/723,660 US20110219790A1 (en) | 2010-03-14 | 2010-03-14 | System and Method For Charging HVAC System |
| PCT/US2011/028355 WO2011115913A2 (en) | 2010-03-14 | 2011-03-14 | System and method for charging hvac system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102893096A CN102893096A (en) | 2013-01-23 |
| CN102893096B true CN102893096B (en) | 2016-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180013756.4A Expired - Fee Related CN102893096B (en) | 2010-03-14 | 2011-03-14 | For the system and method for filled HVAC system |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20110219790A1 (en) |
| CN (1) | CN102893096B (en) |
| CA (1) | CA2792820C (en) |
| WO (1) | WO2011115913A2 (en) |
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| JP2010007995A (en) * | 2008-06-27 | 2010-01-14 | Daikin Ind Ltd | Refrigerant amount determining method of air conditioning device, and air conditioning device |
| CN103629794B (en) * | 2012-08-27 | 2016-05-04 | 珠海格力电器股份有限公司 | The aerator of air-conditioner and air-conditioner and gas charging control method thereof |
| JP6535450B2 (en) * | 2014-10-14 | 2019-06-26 | 株式会社村田製作所 | Electronic parts |
| KR102343081B1 (en) * | 2015-02-25 | 2021-12-24 | 삼성전자주식회사 | An air conditioner and a method for controlling the same |
| CN106016866B (en) * | 2015-09-18 | 2018-05-04 | 青岛海尔空调电子有限公司 | A kind of air-conditioner coolant fills method and system |
| US11480486B2 (en) * | 2018-02-12 | 2022-10-25 | Watsco Ventures Llc | Integrated sensor and service port with anti-blowback feature for HVAC equipment or HVAC system |
| US10876753B2 (en) * | 2018-02-12 | 2020-12-29 | Watsco Ventures Llc | Integrated sensor and service port for HVAC equipment or HVAC system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CA2792820A1 (en) | 2011-09-22 |
| WO2011115913A2 (en) | 2011-09-22 |
| WO2011115913A3 (en) | 2012-01-12 |
| CN102893096A (en) | 2013-01-23 |
| CA2792820C (en) | 2015-06-16 |
| US20110219790A1 (en) | 2011-09-15 |
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