CN105674641A - Air conditioning system and method for automatically adjusting actual refrigerant charge of the air conditioning system - Google Patents
Air conditioning system and method for automatically adjusting actual refrigerant charge of the air conditioning system Download PDFInfo
- Publication number
- CN105674641A CN105674641A CN201410659795.7A CN201410659795A CN105674641A CN 105674641 A CN105674641 A CN 105674641A CN 201410659795 A CN201410659795 A CN 201410659795A CN 105674641 A CN105674641 A CN 105674641A
- Authority
- CN
- China
- Prior art keywords
- air conditioning
- conditioning system
- cold
- producing medium
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an air conditioning system and a calculation method and an optimized range of relevant design parameters of the air conditioning system. A circulating pipeline of the air conditioning system is connected with an adjusting tank, an elastic separating part is arranged in the adjusting tank and divides the adjusting tank into two parts which are mutually sealed, one part is filled with gas in advance, and the other part can be used for storing refrigerants and communicate with the circulating pipeline. When the air conditioning system works under different working conditions, the pressure of the refrigerants, flowing through the joint of the circulating pipeline and the adjusting tank, in the circulating pipeline changes, the quantity of the refrigerants stored in the adjusting tank can be changed, and therefore the refrigerant charge in the circulating pipeline is made to be equal to or approach the best fit values of all the working conditions; accordingly, the energy efficiency of an air conditioner under all the working conditions is improved, and a good refrigerating/heating effect is achieved.
Description
Technical field
The present invention relates to air-conditioning, be specifically related to the coupling of air-conditioning refrigerant charging amount.
Background technology
Solenoid operated four-way valve in air conditioning system can change the direction of cold-producing medium flowing so that air-conditioning can either freeze when high temperature, it is also possible to heats when low temperature, dual-use. Air-conditioning is when making refrigerating operaton, the pressurized refrigerant gas becoming High Temperature High Pressure after the refrigerant gas entrance compressor of low-temp low-pressure, the refrigerant gas of High Temperature High Pressure is condensation heat release in outdoor heat exchanger (as condenser), liquid refrigerant after temperature reduction is then through the liquid becoming low-temp low-pressure after throttling arrangement reducing pressure by regulating flow, the liquid refrigerant of low-temp low-pressure becomes the gas of low-temp low-pressure in indoor heat exchanger (as vaporizer) after heat absorption evaporation, enter back into compressor to be compressed, so circulate.
Air-conditioning is when making heating operation, the refrigerant gas of low-temp low-pressure pressurizes after entering compressor and becomes the refrigerant gas of High Temperature High Pressure, the refrigerant gas of High Temperature High Pressure is condensation heat release in indoor heat exchanger (as condenser), liquid refrigerant after temperature reduction is then through the liquid becoming low-temp low-pressure after throttling arrangement reducing pressure by regulating flow, the liquid refrigerant of low-temp low-pressure becomes the gas of low-temp low-pressure in outdoor heat exchanger (as vaporizer) after heat absorption evaporation, enter back into compressor to be compressed, so circulate.
As it has been described above, during air conditioner refrigerating, off-premises station is used as condenser, indoor set is used as vaporizer; And when heating, off-premises station is used as vaporizer, indoor set is used as condenser. It is true that outdoor unit heat exchanger is big more many than indoor set heat exchanger, and cold-producing medium is mainly distributed in condenser, so the amount that the amount of the cold-producing medium needed during refrigeration needs cold-producing medium than when heating is big.
Additionally, when freezing or heating, air-conditioning can also run under high frequency or two kinds of operating modes of low frequency. Air-conditioning is when high frequency runs, and refrigerant flow rates is higher, liquid content is relatively low, and in heat exchanger, distribution of refrigerant amount is less; And when low-frequency operation, refrigerant flow rates is relatively low, liquid content is more, in heat exchanger, distribution of refrigerant amount is more, and the amount of therefore required during compressor low-frequency operation cold-producing medium needs the amount of cold-producing medium big when running than high frequency.
The operating characteristic of refrigerant charge and air conditioning system is closely related, the normal operation of air conditioning system depends on that filled refrigerant amount is whether suitable, and air-conditioning in refrigeration, heat and the best coupling charging amount of cold-producing medium required under high frequency, low frequency difference operating mode is different from.Therefore, in this area in the urgent need to developing a kind of air conditioning system that can be automatically adjusted refrigerant charge under different operating modes, thus air-conditioning is under each operating mode, the charging amount of refrigeration can be automatically adjusted to optimum matching point so that the operating characteristic of air-conditioning is more perfect.
Summary of the invention
It is an object of the invention to provide a kind of air conditioning system that can be automatically adjusted in air conditioning system actual refrigerant charge in real time.
The invention provides a kind of air conditioning system, described air conditioning system includes compressor, outdoor heat exchanger, indoor heat exchanger, throttling arrangement and circulating line,
Described circulating line is connected to adjustment tank, described adjustment tank is provided with separator, described adjustment tank is separated into the two parts sealed against each other by described separator, a portion is pre-charged with gas, another part is used for storing cold-producing medium, the described part for storing cold-producing medium is in fluid communication with described circulating line, and described separator can deform, thus changing described two-part volume; Wherein,
When described air conditioning system works under different operating modes, described circulating line flows through the pressure change of described circulating line and the cold-producing medium of described adjustment tank junction, described separator can be made to deform, the amount making the cold-producing medium stored in described adjustment tank changes, thus the refrigerant charge changed in described circulating line.
In a preferred embodiment, described adjustment tank includes the first adjustment tank, and first regulates tank is connected on the circulating line between described outdoor heat exchanger and described throttling arrangement; And/or described adjustment tank includes the second adjustment tank, second regulates tank is connected on the circulating line between described indoor heat exchanger and described throttling arrangement.
Described first regulates tank for storing some refrigerant under high frequency cooling condition so that the amount of the cold-producing medium worked in described circulating line is equal or close to the optimum matching point of air conditioning system refrigerant charge under current refrigeration operating mode; And some refrigerant discharged by described first adjustment tank under low frequency cooling condition so that the amount of the cold-producing medium worked in described circulating line is equal or close to the optimum matching point of air conditioning system refrigerant charge under current refrigeration operating mode; And/or
Described second regulates tank for storing some refrigerant under high frequency heating condition so that the amount of the cold-producing medium worked in described circulating line is equal or close to the optimum matching point of air conditioning system refrigerant charge under current heating condition; And some refrigerant discharged by the second adjustment tank under low frequency heating condition so that the amount of the cold-producing medium worked in described circulating line is equal or close to the optimum matching point of air conditioning system refrigerant charge under current heating condition.
In a preferred embodiment, the total charging amount of cold-producing medium in described air conditioning system is more than or equal to described air conditioning system cold-producing medium the best coupling charging amount under middle cooling condition.
In a preferred embodiment, described adjustment tank is before being connected to described circulating line, and pre-gassy in described adjustment tank, described separator deforms and is close to part and regulates tank skin so that in described adjustment tank, the part for storing cold-producing medium does not have volume.
In a preferred embodiment, the Preliminary pressure-filled of the gas in described pre-gassiness adjustment tank meets claimed below:
A () described first regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under heating condition cold-producing medium higher than described air conditioning system, and be under specified cooling condition the condensing pressure of cold-producing medium lower than described air conditioning system; And/or
B () described second regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under cooling condition cold-producing medium higher than described air conditioning system, and mediate the condensing pressure of cold-producing medium under heating condition lower than described air conditioning system.
In a preferred embodiment, described first regulate Preliminary pressure-filled in tank and mediate the condensing pressure of cold-producing medium under cooling condition less than or equal to described air conditioning system.
In a preferred embodiment, when the total charging amount of the cold-producing medium in described air conditioning system is equal to described air conditioning system cold-producing medium the best coupling charging amount under middle cooling condition, described first regulates Preliminary pressure-filled in tank can mediate the condensing pressure of cold-producing medium under cooling condition greater than or equal to described air conditioning system.
In a preferred embodiment, the maximum evaporation pressure that described air conditioning system is under heating condition cold-producing medium refers to the pressure of the cold-producing medium in the circulating line that described air conditioning system is under low frequency heating condition between described throttling arrangement and described outdoor heat exchanger.
In a preferred embodiment, described air conditioning system is under specified cooling condition the condensing pressure of cold-producing medium and refers to the pressure of the cold-producing medium in the circulating line that described air conditioning system is under specified cooling condition between described throttling arrangement and described outdoor heat exchanger.
In a preferred embodiment, the maximum evaporation pressure that described air conditioning system is under cooling condition cold-producing medium refers to the pressure of the cold-producing medium in the circulating line that described air conditioning system is under low frequency cooling condition between described throttling arrangement and described indoor heat exchanger.
In a preferred embodiment, the described air conditioning system condensing pressure of cold-producing medium under heating condition that mediates refers to the pressure of the cold-producing medium in the circulating line that described air conditioning system mediates under cooling condition between described throttling arrangement and described indoor heat exchanger.
In a preferred embodiment, when described air conditioning system is in cooling condition, described second adjustment tank does not store cold-producing medium, when described air conditioning system is in high frequency cooling condition, described first adjustment tank stores cold-producing medium, when described air conditioning system is in low frequency cooling condition, described first regulates the amount of the cold-producing medium that the amount of the cold-producing medium stored in tank stores in described first adjustment tank less than under high frequency cooling condition or does not store cold-producing medium; And/or
When described air conditioning system is in heating condition, described first adjustment tank does not store cold-producing medium, when described air conditioning system is in high frequency heating condition, described second adjustment tank stores cold-producing medium; When described air conditioning system is in low frequency heating condition, described second regulates the amount of the cold-producing medium that the amount of the cold-producing medium stored in tank stores in described second adjustment tank less than under high frequency heating condition.
Wherein, high frequency cooling condition refers to the refrigerating capacity cooling condition greater than or equal to specified refrigerating capacity of air-conditioning; Low frequency cooling condition refers to the refrigerating capacity cooling condition less than or equal to middle refrigerating capacity of air-conditioning;
High frequency heating condition refers to the heating capacity heating condition greater than or equal to specified heating capacity of air-conditioning; Low frequency heating condition refers to the heating capacity heating condition less than or equal to middle heating capacity of air-conditioning.
In a preferred embodiment, the material for manufacturing described adjustment tank and described separator has the one or more features selected from lower group:
Compatible with cold-producing medium and refrigeration oil;
Temperature resistant range is-20 DEG C～150 DEG C;
The pressure of 5MPa can be withstood greater than.
In a preferred embodiment, the material for manufacturing described separator is selected from one or more in following material: neoprene, nitrile rubber, ethylene propylene diene rubber, Hypalon, fluorubber and politef; And/or
Can make when described separator deforms described adjustment tank for store cold-producing medium be partially expanded to 2/3rds adjustment tank volume; And/or
Material for manufacturing described tank body is selected from one or more in following material:
Cast iron, cast aluminium, carbon steel, rustless steel, copper and alloy;And/or
Described gas is nitrogen or air.
In a preferred embodiment, described separator is for having elastic membrane structure.
Present invention also offers a kind of method being automatically adjusted the actual refrigerant charge of air conditioning system, described air conditioning system includes compressor, outdoor heat exchanger, indoor heat exchanger, throttling arrangement and circulating line, and described method includes: be connected to adjustment tank on described circulating line;
Described adjustment tank is provided with separator, described adjustment tank is separated into the two parts sealed against each other by described separator, a portion is pre-charged with gas, another part can be used for storing cold-producing medium, the described part for storing cold-producing medium can deform with described circulating line fluid communication and described separator, thus changing described two-part volume;
When described air conditioning system works under different operating modes, described circulating line flows through the pressure change of described circulating line and the cold-producing medium of described adjustment tank junction, the amount that can make the cold-producing medium stored in described adjustment tank changes, thus the refrigerant charge changed in described circulating line.
In a preferred embodiment, in the above-mentioned methods, the circulating line between described outdoor heat exchanger and described throttling arrangement is connected to the first adjustment tank, the circulating line between described indoor heat exchanger and described throttling arrangement is connected to the second adjustment tank.
In a preferred embodiment, in the above-mentioned methods, described adjustment tank before being connected to described circulating line, pre-gassy in described adjustment tank, the Preliminary pressure-filled of the gas in described pre-gassiness adjustment tank meets claimed below:
A () described first regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under heating condition cold-producing medium higher than described air conditioning system, be under specified cooling condition the condensing pressure of cold-producing medium lower than described air conditioning system; And/or
B () described second regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under cooling condition cold-producing medium higher than described air conditioning system, mediate the condensing pressure of cold-producing medium under heating condition lower than described air conditioning system.
In a preferred embodiment, in the above-mentioned methods, described first regulate Preliminary pressure-filled in tank and mediate the condensing pressure of cold-producing medium under cooling condition less than or equal to described air conditioning system.
In a preferred embodiment, in the above-mentioned methods, the material for manufacturing described adjustment tank and described separator has the one or more features selected from lower group:
Compatible with cold-producing medium and refrigeration oil;
Temperature resistant range is-20 DEG C～150 DEG C;
The pressure of 5MPa can be withstood greater than.
In a preferred embodiment, in the above-mentioned methods, make that the material of described separator is selected from following material one or more:
Neoprene, nitrile rubber, ethylene propylene diene rubber, Hypalon, fluorubber and politef; And/or
Material for manufacturing described tank body is selected from one or more in following material:
Cast iron, cast aluminium, carbon steel, rustless steel, copper and alloy; And/or
Described gas is nitrogen or air.
In a preferred embodiment, in the above-mentioned methods, described method also includes preliminary filling volume and the Preliminary pressure-filled of determining described adjustment tank:
(1) provide described air conditioning system under each operating mode, described circulating line flows through the data of described circulating line and the pressure of cold-producing medium of described adjustment tank junction, temperature;
(2) the cold-producing medium the best providing described each operating mode of air conditioning system fills matching value;
(3) pressure, temperature data and the Preliminary pressure-filled requirement as above provided according to step (1), it is determined that the Preliminary pressure-filled of described adjustment tank, and the preliminary filling volume of described adjustment tank is calculated by the equation of gas state.
Above-mentioned gas state equation include The Ideal-Gas Equation and/or be modified for real gas after the equation of gas state.
In a preferred embodiment, each operating mode described includes low frequency refrigeration, high frequency freezes, low frequency heats and heats four kinds of operating modes with high frequency.
In a preferred embodiment, when described Preliminary pressure-filled meets above-mentioned Preliminary pressure-filled requirement, the volume of described adjustment tank should be little as much as possible.
In a preferred embodiment, in the above-mentioned methods, the total charging amount of cold-producing medium in described air conditioning system is more than or equal to air conditioning system cold-producing medium the best coupling charging amount under middle cooling condition, wherein
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 2600W is about 700～about 900g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 3500W is about 1000～about 1200g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 5000W is about 1400～about 1800g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 7200W is about 2000～about 2400g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 12000W is about 3600～about 4000g.
Specified refrigeration, middle refrigeration, specified heat and centre heats the namespace uri into refrigeration industry, wherein,
Under specified cooling condition, the refrigeration efficiency of air conditioning system is than being the twice of the refrigeration efficiency ratio of air conditioning system under middle cooling condition;
Under specified heating condition, the heating energy efficiency ratio of air conditioning system is the twice of the heating energy efficiency ratio of air conditioning system under middle heating condition.
In a preferred embodiment, in the above-mentioned methods, the described first gas Preliminary pressure-filled regulating tank is about 1.25～about 3.0MPa, and/or
The described second gas Preliminary pressure-filled regulating tank is about 0.75～about 2.25MPa.
In a preferred embodiment, in the above-mentioned methods, when the specified refrigerating capacity of described air conditioning system is 2600W, the described first preliminary filling volume regulating tank is about 400～about 700ml, and the described second preliminary filling volume regulating tank is 100～400ml; And/or
When the specified refrigerating capacity of described air conditioning system is 3500W, the described first preliminary filling volume regulating tank is 500～900ml, and the described second preliminary filling volume regulating tank is about 200～about 500ml; And/or
When the specified refrigerating capacity of described air conditioning system is 5000W, the described first preliminary filling volume regulating tank is 800～1200ml, and the described second preliminary filling volume regulating tank is about 300～about 600ml; And/or
When the specified refrigerating capacity of described air conditioning system is 7200W, the described first preliminary filling volume regulating tank is 1000～1500ml, and the described second preliminary filling volume regulating tank is about 400～about 800ml; And/or
When the specified refrigerating capacity of described air conditioning system is 12000W, the described first preliminary filling volume regulating tank is 2000～3000ml, and the described second preliminary filling volume regulating tank is about 500～about 1200ml.
In a preferred embodiment, in the above-mentioned methods, when described air conditioning system is in high frequency cooling condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively about 90%～about 95%, about 5%～about 10% and 0%;And/or
When described air conditioning system is in low frequency cooling condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively 100%, 0% and 0%; And/or
When described air conditioning system is in high frequency heating condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively about 80%～about 85%, 0% and about 15%～about 20%; And/or
When described air conditioning system is in low frequency heating condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively about 85%～about 90%, 0% and about 10%～about 15%.
The air conditioning system of the present invention can when refrigeration and heating condition, compressor low frequency and high frequency are run the actual refrigerant charge of automatic regulating system, improve system effectiveness.
Accompanying drawing explanation
Fig. 1 is that the air-conditioning being automatically adjusted refrigerant charge with the present invention is in schematic diagram when cooling condition and compressor run with high frequency;
Fig. 2 has the schematic diagram when air-conditioning being automatically adjusted refrigerant charge of the present invention is in cooling condition and compressor with low-frequency operation;
Fig. 3 is that the air-conditioning being automatically adjusted refrigerant charge with the present invention is in schematic diagram when heating condition and compressor run with high frequency; And
Fig. 4 has the schematic diagram when air-conditioning being automatically adjusted refrigerant charge of the present invention is in heating condition and compressor with low-frequency operation.
Detailed description of the invention
Below with reference to accompanying drawing, presently preferred embodiments of the present invention is described in detail, in order to become apparent from understanding the purpose of the present invention, feature and advantage. It should be understood that embodiment shown in the drawings is not limitation of the scope of the invention, and simply to illustrate that the connotation of technical solution of the present invention.
It is automatically adjusted the air-conditioning of refrigerant charge
Cold-producing medium the best coupling charging amount according to the description in background technology, when air conditioning system cold-producing medium the best coupling charging amount when cooling condition is more than heating condition; And cold-producing medium the best that cold-producing medium the best coupling charging amount during compressor low-frequency operation is when running more than compressor high frequency mates charging amount.
Inventor creatively with the addition of simple adnexa (being namely filled with the adjustment tank of gas) in traditional air conditioning system, and by calculating and test parameters such as determining the adjustment volume of tank, aeration quantity, air conditioning system is made to have the function being automatically adjusted refrigerant charge under different operating modes, thus meeting requirements above. The preferred embodiment of the present invention is as mentioned below.
Traditional air conditioning system mainly includes compressor 1, fluid reservoir 2, cross valve 3, outdoor heat exchanger 4, indoor heat exchanger 5, throttling arrangement 6 and circulating line. In the embodiment of the present invention shown in accompanying drawing 1-4, P1 and P2 position within air-conditioning systems is connected to the first adjustment tank 7 and second and regulates tank 7 '. Each adjustment tank can pass through tee T and be connected with the circulating line of air conditioning system.
In the preferred embodiments of the present invention, the first adjustment tank 7 or the second adjustment tank 7 ' can separately exist in circulating line, and cold/hot air-conditioning processed all can be made to play the effect of certain self-regulation refrigerant charge.
Being provided with in each adjustment tank for being separated into, by regulating tank, the two-part separator 8 sealed against each other, regulate separator 8 above part in tank and be used for storing gas 9, after being pre-charged with appropriate gas, this gas storage part keeps sealing with extraneous;The part of separator less than 8 is in fluid communication with the circulating line of air-conditioning, and under some operating mode, the part of separator less than 8 can store a certain amount of cold-producing medium 10.
Material for manufacturing tank body and separator has the one or more features selected from lower group:
Compatible with cold-producing medium and refrigeration oil;
Temperature resistant range is-20 DEG C～150 DEG C;
Compressive resistance is higher than 5MPa.
Separator 8 can take any suitable form, as long as it can deform along corresponding direction according to the pressure differential between gas 9 and cold-producing medium 10, thus changing in adjustment tank by the two-part volume of its separation. Preferably, separator is for having elastic membrane structure.
Be preferably made from that the material of separator 8 is selected from following material one or more: neoprene (Neoprene), nitrile rubber (Buna), ethylene propylene diene rubber (EPDM), Hypalon (Hypalon), fluorubber (Viton, Aflas) and politef (PTFE).
Be preferably made from that the material of tank body is selected from following material one or more: cast iron, cast aluminium, carbon steel, rustless steel, copper and alloy.
Alternatively, the separator of the first adjustment tank 7 and the separator material of the second adjustment tank 7 ' are identical or different.
Preferably, first regulate tank 7 and second to regulate the gas being filled with in tank 7 ' be nitrogen or air.
Alternatively, the gas of the first adjustment tank 7 preliminary filling and the gas of the second adjustment tank 7 ' preliminary filling are identical or different.
Locate connection the first adjustment tank 7 and the second adjustment tank 7 ' at P1 and the P2 of air conditioning system before or after, can being filled with cold-producing medium in the circulating line of air conditioning system, the total amount being filled with mates charging amount equal to air conditioning system in cold-producing medium the best of middle cooling condition.
It should be noted, actually the total amount that is filled with of cold-producing medium can also more than air conditioning system cold-producing medium the best coupling charging amount at middle cooling condition, to avoid air conditioning system in refrigerating capacity less than under the low frequency cooling condition of middle cooling condition, the situation that refrigerant charge is not enough occurs. The cold-producing medium regulating tank that enters described in the present embodiment is liquid refrigeration/hot working fluid.
Regulate tank 7 and the second adjustment tank 7 ' full gas with certain pressure value in advance to first after, tanks can be regulated by two and be respectively connecting on circulating line. Here " being full of in advance " refers to the gas pressure in separator 8 above section regulating tank and separator is deformed downwards and is close to the adjustment tank skin of bottom, and being equivalent to gas is full of whole adjustment tank, and regulates separator in tank and do not have volume with lower part. Pre-gassiness adjustment tank meets claimed below:
(1) first Preliminary pressure-filled regulated in tank 7 is in the possible maximum evaporation pressure of heating condition (i.e. the cold-producing medium maximum pressure at P1 place under heating condition) higher than air conditioning system, is in the condensing pressure (under specified cooling condition the refrigerant pressure at P1 place) during specified cooling condition lower than air conditioning system
Further, first regulate Preliminary pressure-filled in tank 7 and mediate the condensing pressure (under the cooling condition of centre the refrigerant pressure at P1 place) during cooling condition less than or equal to air conditioning system;
(2) second Preliminary pressure-filleds regulated in tanks 7 ' are in the maximum evaporation pressure (i.e. the refrigerant pressure at P2 place under cooling condition) of cooling condition higher than air conditioning system, mediate the condensing pressure (under the heating condition of centre the refrigerant pressure at P2 place) during heating condition lower than air conditioning system.
The frequency of air conditioning system and its evaporating pressure are inversely proportional to, and are directly proportional to its condensing pressure, and namely air-conditioner running frequency is more low, and its evaporating pressure is more big, and condensing pressure is more little.
Fig. 1 and Fig. 2 respectively illustrates the air conditioning system being in high frequency refrigeration and low frequency cooling condition, and the cold-producing medium in its circulating line flows in the counterclockwise direction, and the refrigerant pressure of the P1 position of pipeline is more than the refrigerant pressure of P2 position.
It is as follows that in the present invention, mentioned high frequency freezes, low frequency freezes, high frequency heats the concept heated with low frequency:
High frequency cooling condition refers to the refrigerating capacity cooling condition greater than or equal to specified refrigerating capacity of air-conditioning; Low frequency cooling condition refers to the refrigerating capacity cooling condition less than or equal to middle refrigerating capacity of air-conditioning;
High frequency heating condition refers to the heating capacity heating condition greater than or equal to specified heating capacity of air-conditioning; Low frequency heating condition refers to the heating capacity heating condition less than or equal to middle heating capacity of air-conditioning.
Due to the maximum evaporation pressure (i.e. the cold-producing medium maximum pressure at P2 place under cooling condition) that the second Preliminary pressure-filled regulated in tank 7 ' is possible higher than cooling condition, namely no matter it is high frequency refrigeration (see Fig. 1) or low frequency refrigeration (see Fig. 2), the refrigerant pressure that the second gas Preliminary pressure-filled regulated in tank 7 ' is consistently higher than in pipeline P2 place, second regulates gas in tank 7 ' remains full state, makes the second adjustment tank 7 ' not store cold-producing medium when air conditioning system is in cooling condition.
As shown in Figure 1, under high frequency cooling condition, first regulates the refrigerant pressure lower than P1 place of the Preliminary pressure-filled in tank 7, some refrigerant extruding separator 8 in circulating line compresses gas in the first adjustment tank 7 and is filled with in the first adjustment tank 7, until the pressure of the gas of separator 8 both sides and cold-producing medium is equal. And this in stable condition after, after gas compression heat absorption, the temperature of temperature and P1 place cold-producing medium is roughly equal.
As shown in Figure 2, when being converted to low frequency cooling condition by high frequency cooling condition, in circulating line, the refrigerant pressure at P1 place reduces (namely condensing pressure reduces), regulates the gas expansion in tank 7 and is expelled to regulating all or part of cold-producing medium stored in tank in circulating line.
Fig. 3 and Fig. 4 illustrates the air conditioning system being in heating condition, and the cold-producing medium in its circulating line flows along clockwise direction, and the refrigerant pressure of the P2 position of pipeline is more than the refrigerant pressure of P1 position.
According to gas Preliminary pressure-filled requirement in adjustment tank mentioned above, no matter it is that high frequency heats (see Fig. 3) or low frequency heats (see Fig. 4) operating mode, first Preliminary pressure-filled regulated in tank 7 is consistently higher than air conditioning system and is in the possible maximum evaporation pressure of heating condition (i.e. the cold-producing medium maximum pressure at P1 place under heating condition), first regulates gas in tank 7 remains pre-full state, makes the first adjustment tank 7 not store cold-producing medium when air conditioning system is in heating condition.
As shown in Figure 3, under high frequency heating condition, second regulates the refrigerant pressure lower than P2 place of the Preliminary pressure-filled in tank 7 ', and the unnecessary cold-producing medium in circulating line extrudes gas in separator compression adjustment tank and is filled with in adjustment tank, until the pressure of the gas of separator both sides and cold-producing medium is equal.
As shown in Figure 4, when being converted to low frequency heating condition by high frequency heating condition, in circulating line, the refrigerant pressure at P2 place reduces (namely condensing pressure reduces), and the second gas expansion regulated in tank 7 ' regulates, by second, the some refrigerant stored in tank 7 ' and is expelled in circulating line.
Can be seen that by describing qualitatively above, by the refrigerant pressure of circulating line mesohigh side and the relation of gas pressure in adjustment tank, the amount of the cold-producing medium stored in tank can be controlled to adjust, thus ensureing that the amount of the cold-producing medium of air conditioning system real work meets the refrigerant charge optimum matching point of each different operating modes.
It practice, except pressure condition, also need to consider the temperature of cold-producing medium difference operating mode diverse location, and the cold-producing medium the best combining different operating mode fills matching value, determines the volume regulating tank, regulates the relevant parameters such as tank pre-charging pressure, to complete the present invention.
In order to disclose particularly the present invention more comprehensively, introduce the volume of adjustment tank, the calculating regulating the relevant parameters such as tank pre-charging pressure and choosing method hereinafter in connection with a concrete example.
Computing formula
In order to calculate simplicity, regard ideal gas as by regulating the gas (be hereinafter called for short and do " gas ") that in tank, separator above section is filled with, adopt The Ideal-Gas Equation pV=nRT to be calculated, in formula,
P is the pressure of gas,
V is the volume of gas,
N is the molal quantity of gas,
R is mol gas constant,
T is thermodynamic temperature.
Here, the work operating mode of air-conditioning is simplified to that high frequency heats, low frequency heats, high frequency freezes and low frequency four kinds of operating modes of refrigeration. And the computational methods here provided and formula are to be equal to the air conditioning system situation at cold-producing medium the best coupling charging amount of low frequency cooling condition for the total charging amount of cold-producing medium in air conditioning system. In this case, when air-conditioner runs under low frequency cooling condition, the first gas tank and in the second gas tank 7 ' neither storage have cold-producing medium.
If the first pre volume regulating tank 7 is VA, Preliminary pressure-filled position pA; The second pre volume regulating tank 7 ' is VB, Preliminary pressure-filled position pB. Wherein, pA、pBValue should meet Preliminary pressure-filled requirement mentioned above. Assume that the gas temperature that the first adjustment tank 7 regulates with second when tank 7 ' fills is identical, and TA=TB=25 DEG C (298K).
During cooling condition, what play refrigerant charge adjustment effect is the first adjustment tank 7. Under known high frequency cooling condition, the pressure p of circulating line P1 place cold-producing mediumHigh frequency freezesWith temperature THigh frequency freezes. Assuming at low frequency cooling condition, regulate in tank and do not store cold-producing medium, at high frequency refrigerating state, the volume regulating the cold-producing medium stored in tank is V1, the pressure of gas is p1, gas temperature is T1, wherein p1=pHigh frequency freezes, T1=THigh frequency freezes。
Being in closed state owing to regulating gas in tank, the molal quantity of gas is constant, The Ideal-Gas Equation can release below equation:
According to Preliminary pressure-filled requirement, selected pA, it is possible to calculate VA。
During heating condition, what play refrigerant charge adjustment effect is the second adjustment tank 7 '. Under known high frequency heating condition, the pressure p of circulating line P2 place cold-producing mediumHigh frequency heatsWith temperature THigh frequency heats, and under low frequency heating condition, the pressure p of circulating line P2 place cold-producing mediumLow frequency heatsWith temperature TLow frequency heats。
Assuming at low frequency heating condition, in order to make the refrigerant charge in blood circulation equal to optimum matching point, the volume regulating the cold-producing medium stored in tank is V2, the pressure of gas is p2, gas temperature is T2, wherein p2=pLow frequency heats, T1=TLow frequency heats; Heating state at high frequency, the volume regulating the cold-producing medium stored in tank is V3, the pressure of gas is p3, gas temperature is T3, wherein p3=pHigh frequency heats, T3=THigh frequency Heat。
Being in closed state owing to regulating gas in tank, the molal quantity of gas is constant, The Ideal-Gas Equation can release below equation:
By above formula, it is possible to obtain:
Thus, it is possible to calculate VB, and PB. It should be noted that the P for calculatingB, also need to verify whether it meets the requirement of Preliminary pressure-filled. If PBMeet Preliminary pressure-filled requirement, it is determined that VBAnd PBBe the second adjustment tank pre volume for and Preliminary pressure-filled.
If PBIt is unsatisfactory for Preliminary pressure-filled requirement, answers prioritizing selection to disclosure satisfy that Preliminary pressure-filled required pressure P 'B.Through repeatedly tentative calculation, redefining and regulating the volume storing cold-producing medium in tank when low frequency heats is V '2, regulating the volume storing cold-producing medium in tank when high frequency heats is V '3, Preliminary pressure-filled P 'BWith preliminary filling volume V 'B, wherein, V '2、V′3Should as much as possible respectively with V2、V3Equal.
Additionally, above-mentioned computing formula is based on The Ideal-Gas Equation, it is also possible to use the Clapyron Equation of revised real gas to be calculated.
Embodiment
Adopt preferred implementation mentioned above and according to above-mentioned computational methods, pass through following steps, determine that the first adjustment tank and second regulates volume and the Preliminary pressure-filled of tank, it is possible to be modified into by the air-conditioning that specified for certain brand refrigerating capacity is 3500W and there is the function being automatically adjusted refrigerant charge:
(1) obtain this air-conditioning and be in the refrigerant pressure of circulating line P1, P2 position, temperature data during different operating mode, as shown in table 1.
Table 1
In the present embodiment, specified in form heats, centre heats, freeze in centre and four kinds of operating modes of specified refrigeration correspond respectively to that the above high frequency described in computing formula heats, low frequency heats, low frequency freezes and high frequency four kinds of operating modes of refrigeration.
(2) obtaining the filled matching value of cold-producing medium the best that this air-conditioning is under each operating mode, wherein, the optimum matching point of middle cooling condition is 1000g, and the total charging amount of cold-producing medium of selected air conditioning system is 1000g.
(3) the Preliminary pressure-filled p of the first adjustment tank is determinedAWith preliminary filling volume VA:
Require and each working condition pressure value in table 1 according to previously described Preliminary pressure-filled, have 25bar < pA< 30bar;
The refrigerant charge matching value of specified refrigeration is 930g, according to V=m/ ρ the density of cold-producing medium (ρ be), converses under this operating mode first and regulates the refrigerant volume V stored in tank1, and according to formula
Calculate corresponding to pAVAValue, as shown in table 2.
Table 2
| First regulates tank Preliminary pressure-filled pA/bar | First regulates tank volume VA/ml |
| 26 | 732.8 |
| 27 | 1152 |
| 28 | 2697 |
Regulate tank design and wish that volume is little as far as possible, therefore select 26bar as the first Preliminary pressure-filled p regulating tankA, corresponding adjustment tank volume VA=732.8ml.
(4) the Preliminary pressure-filled p of the first adjustment tank is determinedAWith preliminary filling volume VA:
Require and each working condition pressure value in table 1 according to Preliminary pressure-filled above, have 11bar < pB< 21bar;
According to middle heating condition and the specified optimum matching point heated, it is determined that V2And V3, and utilize formula
Calculate PB, due to the P calculatedBValue be unsatisfactory for Preliminary pressure-filled requirement, then select force value between 11～21bar to regulate tank Preliminary pressure-filled as second, select close to V2And V3Volume as regulating refrigerant storage volume in tank, meeting formula
When, through repeatedly tentative calculation, obtain relatively reasonable result of calculation, wherein select pB=12.96bar, then VB=211.4ml, now under specified heating condition, in blood circulation, refrigerant charge is 880g, and under middle heating condition, in blood circulation, refrigerant charge is 920g.
Regulating tank by inflate in advance two and be connected respectively to P1 and the P2 place of this air-conditioning duct, the air conditioning system of improvement can be automatically adjusted the charging amount of blood circulation according to operating mode, and its data are as shown in Table 3.
Table 3
As noted earlier, the air-conditioning after improvement is under cooling condition, and in blood circulation, refrigerant charge is equal to optimum matching point, and therefore the first setting regulating tank serves the effect being effectively improved cooling condition air-conditioning efficiency; And under heating condition, in blood circulation, refrigerant charge is not equal to, but close to optimum matching point, the effect to the raising of air-conditioning heating operating mode efficiency that arranges of the second adjustment tank is less.
It should be noted that, in the present embodiment, the refrigerant charging total amount of air conditioning system is equal to the charging amount optimum matching point under middle cooling condition, and when if air-conditioning need to run less than the lower frequency of middle cooling condition with refrigerating capacity, certain value that total for the cold-producing medium of air conditioning system charging amount is set greater than 1000g can be considered, during to ensure that air-conditioning runs under this lower frequency operating mode, cold-producing medium is sufficient. If making this change, then above-mentioned calculating process correspondingly changes.
Relevant parameter
For the air-conditioning of different model and specification, the first design parameter regulating tank and the second adjustment tank all can change. Inventor have passed through substantial amounts of experiment, calculating and research, is directed to the air conditioning system adopting embodiment of the present invention, obtains the scope of the relevant design parameter of different size air-conditioning, as shown in table 4.
Table 4
For the air-conditioning of different model and specification, under each operating mode, the amount of being automatically adjusted of refrigerant charge also has difference. In the present invention, under different operating modes, the mass percent of the amount total charging amount of duty adjusting system that blood circulation, the first adjustment tank and second regulate cold-producing medium in tank is as shown in table 5.
Table 5
The air-conditioning being automatically adjusted refrigerant charge can pass through unnecessary refrigerant storage under different operating modes in regulating tank, and make in blood circulation refrigerant charge equal or close to the optimum matching point of each operating mode, thus improve the air-conditioning efficiency in each operating mode, reach preferably refrigerating/heating effect.
It is pointed out that for some air conditioning systems, the such as single cold or hot air conditioning system of list, it is provided only with one and regulates the equally possible efficiency improving air-conditioning to a certain extent of tank. Below presently preferred embodiments of the present invention has been described in detail, it is understood that after the above-mentioned teachings having read the present invention, the present invention can be made various changes or modifications by those skilled in the art. These equivalent form of values fall within the application appended claims limited range equally.
Claims (18)
1. an air conditioning system, described air conditioning system includes compressor, outdoor heat exchanger, indoor heat exchanger, throttling arrangement and circulating line, it is characterised in that
Described circulating line is connected to adjustment tank, described adjustment tank is provided with separator, described adjustment tank is separated into the two parts sealed against each other by described separator, a portion is pre-charged with gas, another part is used for storing cold-producing medium, the described part for storing cold-producing medium connects with described circulating line, and described separator can deform, thus changing described two-part volume; Wherein,
When described air conditioning system works under different operating modes, described circulating line flows through the pressure change of described circulating line and the cold-producing medium of described adjustment tank junction, described separator can be made to deform, the amount making the cold-producing medium stored in described adjustment tank changes, thus the refrigerant charge changed in described circulating line.
2. air conditioning system as claimed in claim 1, it is characterised in that described adjustment tank includes the first adjustment tank, first regulates tank is connected on the circulating line between described outdoor heat exchanger and described throttling arrangement; And/or described adjustment tank includes the second adjustment tank, second regulates tank is connected on the circulating line between described indoor heat exchanger and described throttling arrangement.
3. air conditioning system as claimed in claim 1, it is characterised in that the total charging amount of cold-producing medium in described air conditioning system is more than or equal to described air conditioning system cold-producing medium the best coupling charging amount under middle cooling condition.
4. air conditioning system as claimed in claim 1 or 2, it is characterized in that, described adjustment tank is before being connected to described circulating line, pre-gassy in described adjustment tank, described separator deforms and is close to part and regulates tank skin so that in described adjustment tank, the part for storing cold-producing medium does not have volume.
5. air conditioning system as claimed in claim 4, it is characterised in that the Preliminary pressure-filled of the gas in described pre-gassiness adjustment tank meets claimed below:
A () described first regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under heating condition cold-producing medium higher than described air conditioning system, and be under specified cooling condition the condensing pressure of cold-producing medium lower than described air conditioning system; And/or
B () described second regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under cooling condition cold-producing medium higher than described air conditioning system, and mediate the condensing pressure of cold-producing medium under heating condition lower than described air conditioning system.
6. air conditioning system as claimed in claim 5, it is characterised in that described first regulates Preliminary pressure-filled in tank mediates the condensing pressure under cooling condition less than or equal to described air conditioning system.
7. air conditioning system as claimed in claim 2, it is characterised in that
When described air conditioning system is in cooling condition, described second adjustment tank does not store cold-producing medium,
When described air conditioning system is in high frequency cooling condition, described first adjustment tank stores cold-producing medium,
When described air conditioning system is in low frequency cooling condition, described first regulates the amount of the cold-producing medium that the amount of the cold-producing medium stored in tank stores in described first adjustment tank less than under high frequency cooling condition or does not store cold-producing medium; And/or
When described air conditioning system is in heating condition, described first adjustment tank does not store cold-producing medium,
When described air conditioning system is in high frequency heating condition, described second adjustment tank stores cold-producing medium;
When described air conditioning system is in low frequency heating condition, described second regulates the amount of the cold-producing medium that the amount of the cold-producing medium stored in tank stores in described second adjustment tank less than under high frequency heating condition.
8. air conditioning system according to claim 1, it is characterised in that the material for manufacturing described adjustment tank and described separator has the one or more features selected from lower group:
Compatible with cold-producing medium and refrigeration oil;
Temperature resistant range is-20 DEG C～150 DEG C;
The pressure of 5MPa can be born.
9. air conditioning system according to claim 1, it is characterised in that the material for manufacturing described separator is selected from one or more in following material: neoprene, nitrile rubber, ethylene propylene diene rubber, Hypalon, fluorubber and politef; And/or
Can make when described separator deforms described adjustment tank for store cold-producing medium be partially expanded to 2/3rds adjustment tank volume; And/or
Material for manufacturing described tank body is selected from one or more in following material:
Cast iron, cast aluminium, carbon steel, rustless steel, copper and alloy; And/or
Described gas is nitrogen or air.
10. air conditioning system according to claim 1, it is characterised in that described separator is for having elastic membrane structure.
11. the method being automatically adjusted the actual refrigerant charge of air conditioning system, described air conditioning system includes compressor, outdoor heat exchanger, indoor heat exchanger, throttling arrangement and circulating line, it is characterized in that, described method includes: connects on described circulating line and regulates tank;
Described adjustment tank is provided with separator, described adjustment tank is separated into the two parts sealed against each other by described separator, a portion is pre-charged with gas, another part can be used for storing cold-producing medium, the described part for storing cold-producing medium connects with described circulating line and described separator can deform, thus changing described two-part volume;
When described air conditioning system works under different operating modes, described circulating line flows through the pressure change of described circulating line and the cold-producing medium of described adjustment tank junction, the amount that can make the cold-producing medium stored in described adjustment tank changes, thus the refrigerant charge changed in described circulating line.
12. method as claimed in claim 11, it is characterised in that connect the first adjustment tank on the circulating line between described outdoor heat exchanger and described throttling arrangement; And/or the circulating line between described indoor heat exchanger and described throttling arrangement connects the second adjustment tank.
13. method as claimed in claim 12, it is characterised in that described adjustment tank before being connected to described circulating line, pre-gassy in described adjustment tank, the Preliminary pressure-filled of the gas in described pre-gassiness adjustment tank meets claimed below:
A () described first regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under heating condition cold-producing medium higher than described air conditioning system, be under specified cooling condition the condensing pressure of cold-producing medium lower than described air conditioning system; And/or
B () described second regulates the maximum evaporation pressure that Preliminary pressure-filled in tank is under cooling condition cold-producing medium higher than described air conditioning system, mediate the condensing pressure of cold-producing medium under heating condition lower than described air conditioning system.
14. method as claimed in claim 11, it is characterised in that described method also includes preliminary filling volume and the Preliminary pressure-filled of determining described adjustment tank:
(1) provide described air conditioning system under each operating mode, described circulating line flows through the data of described circulating line and the pressure of cold-producing medium of described adjustment tank junction, temperature;
(2) the cold-producing medium the best providing described each operating mode of air conditioning system fills matching value;
(3) the Preliminary pressure-filled requirement described in pressure, temperature data and the claim 3 provided according to step (1), it is determined that the Preliminary pressure-filled of described adjustment tank, and the preliminary filling volume of described adjustment tank is calculated by the equation of gas state.
15. method according to claim 11, it is characterised in that the total charging amount of cold-producing medium in described air conditioning system is more than or equal to air conditioning system refrigerant charge under middle cooling condition, wherein
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 2600W is 700～900g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 3500W is 1000～1200g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 5000W is 1400～1800g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 7200W is 2000～2400g; And/or
The total charging amount of cold-producing medium that specified refrigerating capacity is the air conditioning system of 12000W is 3600～4000g.
16. method according to claim 11, it is characterised in that the described first gas Preliminary pressure-filled regulating tank is 1.25～3.0MPa, and/or
The described second gas Preliminary pressure-filled regulating tank is 0.75～2.25MPa.
17. method according to claim 12, it is characterised in that
When the specified refrigerating capacity of described air conditioning system is 2600W, the described first preliminary filling volume regulating tank is 400～700ml, and the described second preliminary filling volume regulating tank is 100～400ml; And/or
When the specified refrigerating capacity of described air conditioning system is 3500W, the described first preliminary filling volume regulating tank is 500～900ml, and the described second preliminary filling volume regulating tank is 200～500ml; And/or
When the specified refrigerating capacity of described air conditioning system is 5000W, the described first preliminary filling volume regulating tank is 800～1200ml, and the described second preliminary filling volume regulating tank is 300～600ml; And/or
When the specified refrigerating capacity of described air conditioning system is 7200W, the described first preliminary filling volume regulating tank is 1000～1500ml, and the described second preliminary filling volume regulating tank is 400～800ml;And/or
When the specified refrigerating capacity of described air conditioning system is 12000W, the described first preliminary filling volume regulating tank is 2000～3000ml, and the described second preliminary filling volume regulating tank is 500～1200ml.
18. method according to claim 12, it is characterised in that
When described air conditioning system is in high frequency cooling condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively 90%～95%, 5%～10% and 0%; And/or
When described air conditioning system is in low frequency cooling condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively 100%, 0% and 0%; And/or
When described air conditioning system is in high frequency heating condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively 80%～85%, 0% and 15%～20%; And/or
When described air conditioning system is in low frequency heating condition, refrigerant charge in described circulating line, described first regulates refrigerant storage amount and described second in tank and regulate in tank the mass percent of the total charging amount of cold-producing medium of refrigerant storage amount duty adjusting system respectively 85%～90%, 0% and 10%～15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659795.7A CN105674641B (en) | 2014-11-18 | 2014-11-18 | Air-conditioning system and the method for automatically adjusting the actual refrigerant charge of air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659795.7A CN105674641B (en) | 2014-11-18 | 2014-11-18 | Air-conditioning system and the method for automatically adjusting the actual refrigerant charge of air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105674641A true CN105674641A (en) | 2016-06-15 |
| CN105674641B CN105674641B (en) | 2018-03-23 |
Family
ID=56945250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410659795.7A Active CN105674641B (en) | 2014-11-18 | 2014-11-18 | Air-conditioning system and the method for automatically adjusting the actual refrigerant charge of air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105674641B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152620A (en) * | 2016-07-26 | 2016-11-23 | 海信（广东）空调有限公司 | Evaporator of air conditioner indoor unit and air conditioner |
| CN106524606A (en) * | 2016-10-12 | 2017-03-22 | 重庆美的通用制冷设备有限公司 | Adjustment device, system and method for refrigerant circulation quantity of air conditioner |
| CN108344217A (en) * | 2018-04-09 | 2018-07-31 | 奥克斯空调股份有限公司 | A kind of refrigerant liquid amount adjusting apparatus, air conditioner test adjustment system and air-conditioning refrigerant method of adjustment |
| CN111981732A (en) * | 2020-07-24 | 2020-11-24 | 中标能效科技（北京）有限公司 | Automatic refrigerant filling device and method |
| CN114659233A (en) * | 2022-03-28 | 2022-06-24 | 青岛海尔空调器有限总公司 | Air conditioner and control method for air conditioner |
| CN115200270A (en) * | 2022-06-28 | 2022-10-18 | 广东美的制冷设备有限公司 | Air conditioner, control method of air conditioner, gas-liquid separator, and operation control device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010025496A1 (en) * | 2000-03-30 | 2001-10-04 | Behr Gmbh & Co. | Filling device for motor vehicle air-conditioning systems |
| CN201293503Y (en) * | 2008-09-27 | 2009-08-19 | 广东美的电器股份有限公司 | Coolant amount adjusting device for air conditioner |
| DE102008002603A1 (en) * | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Air-conditioning service device for motor vehicle, has oil line attached to oil chamber, and gas line attached to gas bell, where pressure in gas bell is controlled by connection of gas line with pressure-generating unit |
| DE102009031293A1 (en) * | 2008-07-02 | 2010-01-07 | Tkr Spezialwerkzeuge Gmbh | Fluid e.g. oil, system e.g. motor vehicle-air conditioning system, filling device for use in workshop, has pressure container provided with volume-changeable cavities for receiving fluids, respectively |
| CN201628430U (en) * | 2010-01-25 | 2010-11-10 | 大连三洋压缩机有限公司 | Automatic recovering and charging device of refrigerating system |
| CN203163327U (en) * | 2013-02-05 | 2013-08-28 | 东莞市微电环保科技有限公司 | Air conditioning system |
-
2014
- 2014-11-18 CN CN201410659795.7A patent/CN105674641B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010025496A1 (en) * | 2000-03-30 | 2001-10-04 | Behr Gmbh & Co. | Filling device for motor vehicle air-conditioning systems |
| DE102008002603A1 (en) * | 2008-06-24 | 2009-12-31 | Robert Bosch Gmbh | Air-conditioning service device for motor vehicle, has oil line attached to oil chamber, and gas line attached to gas bell, where pressure in gas bell is controlled by connection of gas line with pressure-generating unit |
| DE102009031293A1 (en) * | 2008-07-02 | 2010-01-07 | Tkr Spezialwerkzeuge Gmbh | Fluid e.g. oil, system e.g. motor vehicle-air conditioning system, filling device for use in workshop, has pressure container provided with volume-changeable cavities for receiving fluids, respectively |
| CN201293503Y (en) * | 2008-09-27 | 2009-08-19 | 广东美的电器股份有限公司 | Coolant amount adjusting device for air conditioner |
| CN201628430U (en) * | 2010-01-25 | 2010-11-10 | 大连三洋压缩机有限公司 | Automatic recovering and charging device of refrigerating system |
| CN203163327U (en) * | 2013-02-05 | 2013-08-28 | 东莞市微电环保科技有限公司 | Air conditioning system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152620A (en) * | 2016-07-26 | 2016-11-23 | 海信（广东）空调有限公司 | Evaporator of air conditioner indoor unit and air conditioner |
| CN106524606A (en) * | 2016-10-12 | 2017-03-22 | 重庆美的通用制冷设备有限公司 | Adjustment device, system and method for refrigerant circulation quantity of air conditioner |
| CN108344217A (en) * | 2018-04-09 | 2018-07-31 | 奥克斯空调股份有限公司 | A kind of refrigerant liquid amount adjusting apparatus, air conditioner test adjustment system and air-conditioning refrigerant method of adjustment |
| CN111981732A (en) * | 2020-07-24 | 2020-11-24 | 中标能效科技（北京）有限公司 | Automatic refrigerant filling device and method |
| CN114659233A (en) * | 2022-03-28 | 2022-06-24 | 青岛海尔空调器有限总公司 | Air conditioner and control method for air conditioner |
| CN115200270A (en) * | 2022-06-28 | 2022-10-18 | 广东美的制冷设备有限公司 | Air conditioner, control method of air conditioner, gas-liquid separator, and operation control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105674641B (en) | 2018-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105674641A (en) | Air conditioning system and method for automatically adjusting actual refrigerant charge of the air conditioning system | |
| US9488396B2 (en) | Air-conditioning apparatus | |
| CN102365510B (en) | Combined system of air conditioning device and hot-water supply device | |
| CN103765124B (en) | Refrigerating plant | |
| CN102042724B (en) | Refrigerant control component, air-conditioning refrigeration system and refrigerant circulation control method | |
| JP5865561B1 (en) | Refrigeration cycle equipment | |
| CN104364591B (en) | Conditioner | |
| CN104541113A (en) | Refrigeration cycle, and air conditioner provided with same | |
| CN108716784B (en) | Multi-split system and control method thereof | |
| JPH0232547B2 (en) | ||
| CN104390423B (en) | Temperature-controlled flow adjusting device and refrigerator | |
| CN100541061C (en) | The improvement expansion gear that is used for air-conditioning system | |
| CN101338951B (en) | Water cooling heat pump type multiple air-conditioning unit | |
| CN107128147B (en) | Coaxial pipe and air conditioning system with same | |
| US20110192177A1 (en) | Air conditioner and control method thereof | |
| CN105865071B (en) | Air-conditioning system | |
| EP4043813A1 (en) | Cooling device | |
| CN107270518B (en) | Air conditioning system, and control device and method of air conditioning system | |
| CN201615644U (en) | Air conditioner refrigerant circulating unit | |
| CN104879950A (en) | Air conditioner all-in-one machine system and control method thereof | |
| JP2002277077A (en) | Air conditioner | |
| JP5225895B2 (en) | Air conditioner | |
| JP6811379B2 (en) | Refrigeration cycle equipment | |
| CN107270517B (en) | Air conditioning system, and control device and method of air conditioning system | |
| CN101086363A (en) | Multi-split air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 201206 Shanghai Pudong New Area China (Shanghai) free trade test area, Yun Qiao Road No. 1051 Applicant after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Applicant before: Rili Electric Appliance Co., Ltd., Shanghai |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |