CN104534752A - Refrigerant filling system and method and air-conditioning machine set - Google Patents
Refrigerant filling system and method and air-conditioning machine set Download PDFInfo
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- CN104534752A CN104534752A CN201510039334.4A CN201510039334A CN104534752A CN 104534752 A CN104534752 A CN 104534752A CN 201510039334 A CN201510039334 A CN 201510039334A CN 104534752 A CN104534752 A CN 104534752A
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- 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
- 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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- 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
- F25B2345/003—Control issues for charging or collecting refrigerant to or from a cycle
Abstract
The invention relates to a refrigerant filling system and method and an air-conditioning machine set. The refrigerant filling system comprises a refrigerant detection device and a refrigerant filling device, wherein the refrigerant detection device is used for detecting the parameter of a refrigerant circulation system and used for judging whether the parameters of the refrigerant circulation system meet preset judgment conditions or not; if the preset judgment conditions are met, a refrigerant is filled into the refrigerant circulation system through the refrigerant filling device. By adopting the refrigerant filling system provided by the invention, the refrigerant can be filled through the refrigerant filling device under the condition that the refrigerant detection device detects that the refrigerant is in shortage, a part of procedures of manually filling the refrigerant can be canceled, and thus the cost is lowered.
Description
Technical field
The present invention relates to refrigerating field, particularly relate to a kind of cooling medium charging system, method and air-conditioner set.
Background technology
The commercial air conditioning system of variable refrigerant volume in the market, as connected machine, unit machine etc., after product engineering is installed, adding of pipeline refrigerant, especially the system refrigerant super-addition after after-sales service, be all commissioning staff or maintenance personal rule of thumb data to judge or the artificial coolant quantity that calculates pours into.
Because engineering connecting leg is complicated, length of pipe not easily accurately calculates, the professional standards simultaneously debuging examination and maintenance personal are had nothing in common with each other, in addition after after-sales service, required coolant quantity is difficult to accurately judge, the situation that perfusion is too much or very few is there is when being easy to cause additional refrigerant, so not only cause the significant wastage to refrigerant, also directly affect air-conditioner set reliability of operation and comfortableness.
Summary of the invention
The object of the invention is to propose a kind of cooling medium charging system, method and air-conditioner set, it is without the need to manually detecting coolant quantity and pouring into, and reliability is higher.
For achieving the above object, the invention provides a kind of cooling medium charging system, it comprises refrigerant checkout gear and cooling medium charging device, described refrigerant checkout gear is for detecting the parameter of coolant circulating system, and judge whether the parameter of the coolant circulating system detected reaches the Rule of judgment of setting, if reach the Rule of judgment of setting, then in coolant circulating system, pour into refrigerant by described cooling medium charging device.
One preferably or in embodiment, described cooling medium charging device comprises the cooling medium charging branch road be connected on for side on coolant circulating system, and the input of described cooling medium charging branch road connects refrigerant storage tank, and described cooling medium charging branch road is provided with cooling medium charging valve.
One preferably or in embodiment, along refrigerant flow direction, on described cooling medium charging branch road, the rear of described cooling medium charging valve is provided with refrigerant speed regulator.
One preferably or in embodiment, described refrigerant speed regulator is capillary or choke valve.
One preferably or in embodiment, along refrigerant flow direction, on described cooling medium charging branch road, the front of described cooling medium charging valve is provided with filter.
One preferably or in embodiment, the position be communicated with described refrigerant storage tank near described cooling medium charging branch road is also provided with hand stop valve.
One preferably or in embodiment, described refrigerant checkout gear comprises detecting element and multilevel iudge element, described detecting element is electrically connected described multilevel iudge element, described detecting element is for detecting the parameter of coolant circulating system, and sending the parameter detected to described multilevel iudge element, the parameter of the parameter received and its internal preset compares, when reaching default Rule of judgment by described multilevel iudge element, send signal, show to need to pour into refrigerant.
One preferably or in embodiment, described refrigerant checkout gear also comprises display element, and/or alarm element, described display element and/or described alarm element are electrically connected described multilevel iudge element.
One preferably or in embodiment, described cooling medium charging system also comprises controller, described controller is electrically connected described multilevel iudge element and described cooling medium charging valve, when described controller receive that described multilevel iudge element sends need to pour into the signal of refrigerant after, control described cooling medium charging valve to open, perfusion refrigerant.
Preferably or in embodiment, the first setting-up time and the second setting-up time in described controller, is preset one;
When described controller control time that described cooling medium charging valve opens reach described first setting-up time time, described controller controls described cooling medium charging valve and cuts out;
When the time that described cooling medium charging valve cuts out reaches described second setting-up time, described controller checks whether the signal needing to pour into refrigerant receiving described multilevel iudge element and send; If receive signal, described controller controls described cooling medium charging valve and opens.
Preferably or in embodiment, in described controller, be also provided with the 3rd setting-up time one, when coolant circulating system carry out cooling medium charging reach described 3rd setting-up time total time time, described controller controls described cooling medium charging valve and cuts out.
For achieving the above object, present invention also offers a kind of method for perfusing refrigerant based on the cooling medium charging system in above-mentioned any embodiment, it comprises the steps:
Detected the parameter of coolant circulating system by refrigerant checkout gear, when the parameter of the coolant circulating system detected reaches the Rule of judgment of setting, in coolant circulating system, pour into refrigerant by cooling medium charging device.
One preferably or in embodiment, method for perfusing refrigerant specifically adopts following steps:
S1) parameter of coolant circulating system is detected by the detecting element in described refrigerant checkout gear, and the multilevel iudge element parameter detected sent in described refrigerant checkout gear, the parameter of the parameter received and its internal preset compares by described multilevel iudge element, when reaching default Rule of judgment, send the signal of perfusion refrigerant to controller;
S2) the cooling medium charging valve that described controller controls in described cooling medium charging device is opened, perfusion refrigerant;
When reaching the first setting-up time in described controller, described controller controlled described cooling medium charging valve and cut out the time of S3) opening when described cooling medium charging valve;
The time of S4) closing when described cooling medium charging valve is when reaching the second setting-up time in described controller, described controller checks whether the signal needing to pour into refrigerant receiving described multilevel iudge element and send, as received signal, return step S2), as confiscated signal, cooling medium charging terminates.
For achieving the above object, present invention also offers a kind of air-conditioner set, it comprises the cooling medium charging system in above-mentioned any embodiment.
One preferably or in embodiment, detecting element in described refrigerant checkout gear comprises the one in indoor set inlet pipe detector unit, indoor machine evaporation degree of superheat detecting element, coolant circulating system low voltage value detecting element, off-premises station subcooler degree of supercooling detecting element and compressor air-discharging degree of superheat detecting element, or several combinations.
One preferably or in embodiment, the comparison judgment unit in described refrigerant checkout gear, Rule of judgment preset in it comprises the following combination of one or more:
Continuous setting-up time detects: coiler inlet pipe temperature >=15 ~ 25 DEG C in start;
Continuous setting-up time detects: the span of the corresponding saturation temperature Td of coolant circulating system low pressure≤T1, T1 is-15 DEG C ~ 10 DEG C;
Continuous setting-up time detects: the span of coolant circulating system degree of supercooling Tsc1≤T2, a T2 is 0 ~ 15 DEG C;
Continuous setting-up time detects: the span of coolant circulating system secondary degree of supercooling Tsc2≤T3, T3 is 5 DEG C ~ 25 DEG C;
Continuous setting-up time detects: the span of air-conditioner set any a compressor discharge superheat Toh >=T4, T4 is 0 ~ 20 DEG C.
Based on technique scheme, the present invention at least has following beneficial effect:
Cooling medium charging system provided by the invention, under refrigerant checkout gear detects the situation lacking refrigerant, can be carried out the perfusion of refrigerant, save the link of part artificial refrigerant, reduce costs by cooling medium charging device.
One preferably or in embodiment, cooling medium charging system, by arranging controller, has automatic filling function, by this automatic filling function, automatically can determine the refrigerant super-addition amount needed for coolant circulating system, after connecting refrigerant storage tank, automatically pour into; And after after-sales service, can this automatic filling function be passed through, cooling medium charging amount needed for accurate judgement system, and automatically pour into after connecting refrigerant storage tank; In similar New Product Development Process, by this automatic filling function, specified perfusion coolant quantity tentatively can be determined.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the part-structure block diagram of cooling medium charging system provided by the invention;
Fig. 2 is the structural representation that cooling medium charging device provided by the invention is connected on coolant circulating system;
Fig. 3 is that a specific embodiment of cooling medium charging system provided by the invention is applied in control flow schematic diagram air-conditioner set carrying out refrigerant automatic filling.
Attached number in the figure:
1-compressor; 2-four-way change-over valve; 3-gas-liquid separator; 4-outdoor unit heat exchanger; 5-indoor set heat exchanger; 6-capillary; 7-cooling medium charging valve; 8-filter; 9-hand stop valve; 10-choke valve; 11-subcooler;
20-detecting element; 21-multilevel iudge element; 22-controller; 23-display element; 24-alarm element.
Detailed description of the invention
Below in conjunction with the accompanying drawing 1-3 in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
In the illustrative examples of cooling medium charging system provided by the invention, cooling medium charging system comprises refrigerant checkout gear and cooling medium charging device, refrigerant checkout gear is for detecting the parameter of coolant circulating system, and judge whether the parameter of the coolant circulating system detected reaches the Rule of judgment of setting, if reach the Rule of judgment of setting, then in coolant circulating system, pour into refrigerant by cooling medium charging device.
As shown in Figure 2, in the illustrative examples of cooling medium charging system provided by the invention, cooling medium charging device comprises the cooling medium charging branch road be connected on for side on coolant circulating system, the input of cooling medium charging branch road connects refrigerant storage tank, cooling medium charging branch road is provided with cooling medium charging valve 7, by controlling the open and close controlling cooling medium charging amount of cooling medium charging valve 7.Along refrigerant flow direction, on cooling medium charging branch road, the front of cooling medium charging valve 7 can be provided with filter 8, the rear of cooling medium charging valve 7 can be provided with capillary 6, by arranging filter 8, can prevent impurity from entering coolant circulating system, refrigerant flow rate in automatic filling process can be slowed down by arranging capillary 6, to control cooling medium charging amount, and capillary 6 can also replace with can the choke valve of adjust flux, capillary 6 and choke valve all belong to refrigerant speed regulator.
The position be communicated with refrigerant storage tank near cooling medium charging branch road can also be provided with hand stop valve 9, before startup automatic filling, need manually opened hand stop valve 9, after automatic filling terminates, need manual-lock hand stop valve 9, isolated coolant circulating system and external environment, prevent the secondary refrigerant leakage in coolant circulating system.
In above-mentioned illustrative examples, the flow direction of refrigerant is for manually stop valve 9, filter 8, cooling medium charging valve 7, capillary 6 enter coolant circulating system successively.
As shown in Figure 1, in the illustrative examples of cooling medium charging system provided by the invention, refrigerant checkout gear comprises detecting element 20 and multilevel iudge element 21, detecting element 20 is electrically connected multilevel iudge element 21, detecting element 20 is for detecting the parameter of coolant circulating system, and send the parameter detected to multilevel iudge element 21, the parameter of the parameter received and its internal preset compares by multilevel iudge element 21, when reaching default Rule of judgment, send signal, show to need to pour into refrigerant.
Adopt refrigerant checkout gear provided by the invention, do not need manually to check whether coolant circulating system lacks refrigerant, and when needs perfusion refrigerant, can reminding user, reduce cost of labor.
In above-mentioned illustrative examples, detecting element 20 can adopt the components and parts that the market such as temperature sensor or foil gauge can have been bought; Multilevel iudge element 21 can adopt the components and parts that the markets such as decision circuitry can have been bought.
As shown in Figure 1, in the illustrative examples of cooling medium charging system provided by the invention, refrigerant checkout gear can also comprise display element 23, and/or, alarm element 24, display element 23 and/or alarm element 24 are electrically connected multilevel iudge element 21, when multilevel iudge element 21 judges that the parameter received reaches default Rule of judgment, send signal to display element 23 and/or alarm element 24, carry out showing and/or reporting to the police, show to need to pour into refrigerant.
In above-mentioned illustrative examples, display element 23 can adopt display; Alarm element 24 can adopt audible-visual annunciator.
As shown in Figure 1, in the illustrative examples of cooling medium charging system provided by the invention, cooling medium charging system can also comprise controller 22, can realize the refrigerant automatic filling of cooling medium charging system by arranging controller 22.Controller 22 is electrically connected the multilevel iudge element 21 in refrigerant checkout gear and the cooling medium charging valve 7 in cooling medium charging device, when controller 22 receive that multilevel iudge element 21 sends need to pour into the signal of refrigerant after, control cooling medium charging valve 7 to open, perfusion refrigerant.
In the illustrative examples of cooling medium charging system provided by the invention, the first setting-up time and the second setting-up time in controller 22, can be preset.
When controller 22 control time that cooling medium charging valve 7 opens reach the first setting-up time time, controller 22 controls cooling medium charging valve 7 and cuts out; First setting-up time can be X second, and the span of X can be 10 ~ 100.
When the time that cooling medium charging valve 7 cuts out reaches the second setting-up time, controller 22 checks whether the signal needing to pour into refrigerant receiving multilevel iudge element 21 and send; If receive signal, controller 22 controls cooling medium charging valve 7 and opens.Second setting-up time can be Y second, and the span of Y can be 10 ~ 200.
In the illustrative examples of cooling medium charging system provided by the invention, the 3rd setting-up time can also be preset in controller 22, when cooling medium charging system reaches the 3rd setting-up time to the time that coolant circulating system carries out cooling medium charging, controller 22 controls cooling medium charging valve 7 and cuts out, system exits automatic filling pattern, and automatic filling terminates.3rd setting-up time can be the span of Z minute, Z can be 5 ~ 40.
Method for perfusing refrigerant based on the cooling medium charging system in above-mentioned any embodiment provided by the invention, it comprises the steps:
Detected the parameter of coolant circulating system by refrigerant checkout gear, when the parameter of the coolant circulating system detected reaches the Rule of judgment of setting, in coolant circulating system, pour into refrigerant by cooling medium charging device.
Above-mentioned method for perfusing refrigerant, specifically can adopt following steps:
S1) parameter of coolant circulating system is detected by the detecting element 20 in refrigerant checkout gear, and the multilevel iudge element 21 parameter detected sent in refrigerant checkout gear, the parameter of the parameter received and its internal preset compares by multilevel iudge element 21, when reaching default Rule of judgment, send the signal of perfusion refrigerant to controller 22;
S2) the cooling medium charging valve 7 that controller 22 controls in cooling medium charging device is opened, perfusion refrigerant;
When reaching the first setting-up time in controller 22, controller 22 controlled cooling medium charging valve 7 and cut out the time of S3) opening when cooling medium charging valve 7;
The time of S4) closing when cooling medium charging valve 7 is when reaching the second setting-up time in controller 22, controller 22 checks whether the signal needing to pour into refrigerant receiving multilevel iudge element 21 and send, if receive signal, returns step S2), if confiscate signal, cooling medium charging terminates.
In above-mentioned method for perfusing refrigerant, control by cooling medium charging valve 7: cooling medium charging valve 7 opening time reach the first setting-up time after close, after shut-in time reaches the second setting-up time, again judge whether the operating mode occurring " lacking refrigerant to run ", back and forth again carry out control action by this, what adopt is the control thinking of " having more meals a day but less food at each ", and object is accurately to control cooling medium charging amount.
The present invention controls cooling medium charging system realize automatic filling refrigerant by arranging controller 22, has the following advantages:
1) in project installation process: the link that part manual operation perfusion refrigerant can be saved, such as: manually calculate coolant quantity, manually check that systematic parameter judges coolant quantity etc., save labour cost, the waste simultaneously also avoiding artificial incorrect operation to cause.
2) in maintenance process after sale: because the coolant quantity of coolant circulating system cannot be determined, a lot of engineering was all again pour into after all being discharged by refrigerant again in the past.Use automatic filling function provided by the invention; only simple refrigerant recovering need be carried out before maintenance; after having keeped in repair; can refrigerant super-addition amount needed for automatic decision coolant circulating system; not only reduce refrigerant cost; but also the pollution alleviated environment, greatly can also shorten the downtime of keeping in repair and causing simultaneously, accelerate maintenance engineering progress.
3) in new product development process: by automatic filling function, can greatly reduce in new product development process, it is consuming time that coolant quantity mates, and accelerates new product development speed.
Cooling medium charging system provided by the invention mainly can be applied in and become on the business air conditioner of coolant system or refrigerator.
As shown in Figure 2, in the illustrative examples of air-conditioner set provided by the invention, air-conditioner set can comprise compressor 1, four-way change-over valve 2, gas-liquid separator 3, outdoor unit heat exchanger 4, indoor set heat exchanger 5, subcooler 11 (board-like or double pipe heat exchanger) and choke valve 10, the cooling medium charging system in above-mentioned any embodiment can also be comprised, or, only comprise the refrigerant checkout gear in above-mentioned any embodiment.
In the illustrative examples of air-conditioner set provided by the invention, detecting element 20 in refrigerant checkout gear at least can comprise indoor set inlet pipe detector unit, indoor machine evaporation (heat exchanger) degree of superheat detecting element, coolant circulating system low voltage value detecting element, off-premises station subcooler (heat exchanger) degree of supercooling detecting element and compressor air-discharging degree of superheat detecting element etc., one wherein, or combinations several arbitrarily.
In the illustrative examples of air-conditioner set provided by the invention, the accuracy of perfusion coolant quantity is the setting of " owing fluorine to run " Rule of judgment, and this Rule of judgment is arranged under coolant circulating system refrigerating operaton condition, that is: the comparison judgment unit in refrigerant checkout gear, Rule of judgment preset in it at least can comprise following a kind of or several arbitrarily combination:
Condition one: the continuous setting-up time of indoor set inlet pipe detector unit detects: coiler inlet pipe temperature >=15 ~ 25 DEG C in start, then judge now to run as owing fluorine;
Condition two: the continuous setting-up time of coolant circulating system low voltage value detecting element detects: the span of the corresponding saturation temperature Td of coolant circulating system low pressure≤T1, T1 can be-15 DEG C ~ 10 DEG C, then judge now to run as owing fluorine;
Condition three: the continuous setting-up time of cold degree detecting element detects: coolant circulating system degree of supercooling Tsc1≤T2, the span of T2 can be 0 ~ 15 DEG C, wherein a degree of supercooling Tsc1 is the difference that the corresponding saturation temperature of coolant circulating system high-pressure value and outdoor unit heat exchanger (condenser) liquid go out temperature, then judge that now owing fluorine runs;
Condition four: for the coolant circulating system being provided with secondary and crossing cold heat exchanger, what the choke valve 10 namely in Fig. 2 and subcooler 11 formed crosses cooling system, the continuous setting-up time of off-premises station subcooler (heat exchanger) degree of supercooling detecting element detects: coolant circulating system secondary degree of supercooling Tsc2≤T3, the span of T3 can be 5 DEG C ~ 25 DEG C, wherein secondary degree of supercooling Tsc2 is the difference that the corresponding saturation temperature of coolant circulating system high-pressure value and subcooler (condenser) liquid go out temperature, then judge that now owing fluorine runs;
Condition five: the continuous setting-up time of compressor air-discharging degree of superheat detecting element detects: any compressor discharge superheat Toh >=T4 of air-conditioner set, the span of T4 can be 0 ~ 20 DEG C, wherein, compressor air-discharging degree of superheat Toh is the difference of compressor exhaust temperature saturation temperature corresponding to coolant circulating system high-pressure, then judge that now owing fluorine runs.
In each condition above-mentioned, setting-up time can be M second, and the span of M can be 5 ~ 60.
Above Rule of judgment is the relation of "or", adopts the omnibearing condition setting of many condition, can accomplish the refrigerant situation accurately judging system as far as possible.
When only arranging refrigerant checkout gear in air-conditioner set, air-conditioner set itself can be made to have and independently to judge whether coolant circulating system lacks fluorine by above-mentioned Rule of judgment, thus the function of reminding user.
When arranging cooling medium charging system in air-conditioner set, air-conditioner set itself can be made to have and independently to judge whether coolant circulating system lacks fluorine by above-mentioned Rule of judgment, thus the function of reminding user, and then after user is communicated with cooling medium charging branch road, air-conditioner set can enter autonomous fill-up mode.
A cooling medium charging branch road is increased, as shown in Figure 2 in the low-pressure side of air-conditioner set.Under varying environment operating mode, air-conditioner set start running refrigerating pattern, judge whether air-conditioner set occurs that scarce refrigerant (owing fluorine) runs according to the parameter (as high pressure, low pressure, evaporator superheat, discharge superheat, subcooler degree of supercooling etc.) of coolant circulating system, and then the opening and closing controlling cooling medium charging valve 7 controls the groundwater increment of refrigerant automatically.
As shown in Figure 3, the specific embodiment for cooling medium charging system provided by the invention is applied in control flow schematic diagram air-conditioner set carrying out refrigerant automatic filling, and the flow process that this air-conditioner set carries out refrigerant automatic filling is:
After refrigerant storage tank and hand stop valve 9 connect, manual unlocking hand stop valve 9, air-conditioner set enters the start of automatic filling pattern and runs, as occurred, " owing fluorine to run " judges, then cooling medium charging valve 7 is opened, refrigerant enters coolant circulating system by cooling medium charging branch road, cooling medium charging valve 7 cuts out after opening X second, after closing Y second, again judge whether to occur " owing fluorine to run ", in this way, cooling medium charging valve 7 cuts out after again opening X second, closedown Y judges after second again, and so forth, until after no longer occurring that " owing fluorine to judge " or automatic filling pattern total run time reach Z minute, cooling medium charging valve 7 cuts out, air-conditioner set exits automatic filling pattern, perfusion terminates.
Cooling medium charging system provided by the invention is applied on the business air conditioner of change coolant system, and it mainly can solve following technical problem:
After air-conditioner set project installation, by this automatic filling function, air-conditioner set can determine the refrigerant super-addition amount needed for coolant circulating system automatically, after connecting refrigerant storage tank, automatically carries out cooling medium charging;
After after-sales service, by this automatic filling function, accurately judge cooling medium charging amount needed for coolant circulating system, and automatically pour into after connecting refrigerant storage tank;
In similar New Product Development Process, by this automatic filling function, tentatively determine the perfusion coolant quantity that air-conditioner set is specified.
Cooling medium charging system provided by the invention is applied on air-conditioner set, mainly can produce the benefit of the following aspects:
Project installation: cooling medium charging link can save part manual operation, such as: manually calculate coolant quantity, manually check that the parameter of coolant circulating system judges coolant quantity etc., this part can save labour cost, the waste simultaneously also avoiding artificial incorrect operation to cause;
After-sales service: because the coolant quantity of coolant circulating system cannot be determined, a lot of engineering was all again pour into after all being discharged by refrigerant again in the past.Use automatic filling function, only need to carry out simple refrigerant recovering before air-conditioner set maintenance, after having keeped in repair, air-conditioner set can refrigerant super-addition amount needed for automatic decision coolant circulating system, not only reduce refrigerant cost, but also the pollution alleviated environment, greatly can also shorten the downtime of keeping in repair and causing simultaneously, accelerate the progress of maintenance engineering;
New product development: cross automatic filling function, can greatly reduce in new product development process, it is consuming time that air-conditioner set coolant quantity mates, and accelerates new product development speed.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (16)
1. a cooling medium charging system, it is characterized in that: comprise refrigerant checkout gear and cooling medium charging device, described refrigerant checkout gear is for detecting the parameter of coolant circulating system, and judge whether the parameter of the coolant circulating system detected reaches the Rule of judgment of setting, if reach the Rule of judgment of setting, then in coolant circulating system, pour into refrigerant by described cooling medium charging device.
2. cooling medium charging system as claimed in claim 1, it is characterized in that: described cooling medium charging device comprises the cooling medium charging branch road be connected on for side on coolant circulating system, the input of described cooling medium charging branch road connects refrigerant storage tank, described cooling medium charging branch road is provided with cooling medium charging valve (7).
3. cooling medium charging system as claimed in claim 2, it is characterized in that: along refrigerant flow direction, on described cooling medium charging branch road, the rear of described cooling medium charging valve (7) is provided with refrigerant speed regulator.
4. cooling medium charging system as claimed in claim 3, is characterized in that: described refrigerant speed regulator is capillary (6) or choke valve.
5. cooling medium charging system as claimed in claim 2, it is characterized in that: along refrigerant flow direction, on described cooling medium charging branch road, the front of described cooling medium charging valve (7) is provided with filter (8).
6. cooling medium charging system as claimed in claim 2, is characterized in that: the position be communicated with described refrigerant storage tank near described cooling medium charging branch road is also provided with hand stop valve (9).
7. the cooling medium charging system as described in any one of claim 2-6, it is characterized in that: described refrigerant checkout gear comprises detecting element (20) and multilevel iudge element (21), described detecting element (20) is electrically connected described multilevel iudge element (21), described detecting element (20) is for detecting the parameter of coolant circulating system, and the parameter detected is sent to described multilevel iudge element (21), the parameter of the parameter received and its internal preset compares by described multilevel iudge element (21), when reaching default Rule of judgment, send signal, show to need to pour into refrigerant.
8. cooling medium charging system as claimed in claim 7, it is characterized in that: described refrigerant checkout gear also comprises display element (23), and/or, alarm element (24), described display element (23) and/or described alarm element (24) are electrically connected described multilevel iudge element (21).
9. cooling medium charging system as claimed in claim 7, it is characterized in that: described cooling medium charging system also comprises controller (22), described controller (22) is electrically connected described multilevel iudge element (21) and described cooling medium charging valve (7), when described controller (22) receive that described multilevel iudge element (21) sends need to pour into the signal of refrigerant after, control described cooling medium charging valve (7) to open, perfusion refrigerant.
10. cooling medium charging system as claimed in claim 9, is characterized in that: preset the first setting-up time and the second setting-up time in described controller (22);
When described controller (22) control time that described cooling medium charging valve (7) opens reach described first setting-up time time, described controller (22) controls the closedown of described cooling medium charging valve (7);
When the time that described cooling medium charging valve (7) is closed reaches described second setting-up time, described controller (22) checks whether the signal needing to pour into refrigerant receiving described multilevel iudge element (21) and send; If receive signal, described controller (22) controls described cooling medium charging valve (7) and opens.
11. cooling medium charging systems as claimed in claim 10, it is characterized in that: in described controller (22), be also provided with the 3rd setting-up time, when coolant circulating system carry out cooling medium charging reach described 3rd setting-up time total time time, described controller (22) control described cooling medium charging valve (7) close.
12. 1 kinds, based on the method for perfusing refrigerant of the cooling medium charging system described in any one of claim 1-11, is characterized in that, comprise the steps:
Detected the parameter of coolant circulating system by refrigerant checkout gear, when the parameter of the coolant circulating system detected reaches the Rule of judgment of setting, in coolant circulating system, pour into refrigerant by cooling medium charging device.
13. method for perfusing refrigerant as claimed in claim 12, is characterized in that, specifically adopt following steps:
S1) parameter of coolant circulating system is detected by the detecting element (20) in described refrigerant checkout gear, and the multilevel iudge element (21) parameter detected sent in described refrigerant checkout gear, the parameter of the parameter received and its internal preset compares by described multilevel iudge element (21), when reaching default Rule of judgment, send the signal of perfusion refrigerant to controller (22);
S2) the cooling medium charging valve (7) that described controller (22) controls in described cooling medium charging device is opened, perfusion refrigerant;
The time of S3) opening when described cooling medium charging valve (7), when reaching the first setting-up time in described controller (22), described controller (22) controlled the closedown of described cooling medium charging valve (7);
The time of S4) closing when described cooling medium charging valve (7) is when reaching the second setting-up time in described controller (22), described controller (22) checks whether the signal needing to pour into refrigerant receiving described multilevel iudge element (21) and send, as received signal, return step S2), as confiscated signal, cooling medium charging terminates.
14. 1 kinds of air-conditioner set, is characterized in that: comprise the cooling medium charging system as described in any one of claim 1-11.
15. air-conditioner set as claimed in claim 14, it is characterized in that: the detecting element (20) in described refrigerant checkout gear comprises the one in indoor set inlet pipe detector unit (20), indoor machine evaporation degree of superheat detecting element (20), coolant circulating system low voltage value detecting element (20), off-premises station subcooler degree of supercooling detecting element (20) and compressor air-discharging degree of superheat detecting element (20), or several combinations.
16. air-conditioner set as claimed in claim 15, it is characterized in that: the comparison judgment unit in described refrigerant checkout gear, Rule of judgment preset in it comprises the following combination of one or more:
Continuous setting-up time detects: coiler inlet pipe temperature >=15 ~ 25 DEG C in start;
Continuous setting-up time detects: the span of the corresponding saturation temperature Td of coolant circulating system low pressure≤T1, T1 is-15 DEG C ~ 10 DEG C;
Continuous setting-up time detects: the span of coolant circulating system degree of supercooling Tsc1≤T2, a T2 is 0 ~ 15 DEG C;
Continuous setting-up time detects: the span of coolant circulating system secondary degree of supercooling Tsc2≤T3, T3 is 5 DEG C ~ 25 DEG C;
Continuous setting-up time detects: the span of air-conditioner set any a compressor discharge superheat Toh >=T4, T4 is 0 ~ 20 DEG C.
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