CN103542565A - Room air-conditioner - Google Patents
Room air-conditioner Download PDFInfo
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- CN103542565A CN103542565A CN201210238165.3A CN201210238165A CN103542565A CN 103542565 A CN103542565 A CN 103542565A CN 201210238165 A CN201210238165 A CN 201210238165A CN 103542565 A CN103542565 A CN 103542565A
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/12—Inflammable refrigerants
Abstract
The invention provides a room air-conditioner which comprises an outdoor unit, an indoor unit, connecting pipes connecting the indoor unit and the outdoor unit so as to form a refrigerating fluid circulation circuit, and throttling elements arranged in the connecting pipes. The indoor unit comprises an indoor heat exchanger. The outdoor unit comprises a compressor and an outdoor heat exchanger. The connecting pipes comprise a high pressure air pipe, a high pressure liquid pipe, a low pressure liquid pipe and a low pressure air pipe. The range of the inner diameter of the low pressure air pipe is 5.5-14.5 millimeters. The range of the inner diameter of the high pressure air pipe is 4-10 millimeters. The range of the inner diameter of the low pressure liquid pipe is 3-8.5 millimeters. The range of the inner diameter of the high pressure liquid pipe is 2.5-6.5 millimeters. By the adoption of the technical scheme of the room air-conditioner, sizes of pipelines of the room air-conditioner and sizes of pipelines of the two heat exchangers are reduced, and the energy-saving and environment-friendly level of the room air-conditioner is improved. Further, the utilization amount of refrigerating fluid can be reduced, and the application of environment-friendly refrigerating fluid is adapted.
Description
Technical field
The present invention relates to air-conditioner field, in particular to a kind of room air conditioner.
Background technology
The configuration sized such as the heat exchanger of existing room air conditioner and pipeline are all larger, cause the filling quantity of refrigerant of air-conditioning system more.And the cold-producing medium that room air conditioner uses is at present as the greenhouse effects of R22 and the R410A value (GWP) higher (being about respectively 1810 and 2100) of diving, the direct carbon emission amount of room air conditioner is high becomes the environmental issue that industry and government pay close attention to.Adopt the alternative R22 of the lower GWP cold-producing mediums such as R290 and R32 and cold-producing medium such as GWP such as height such as R410A grade to become the main path that current industry solves this environmental issue.But the cold-producing medium such as R290 and R32 has combustibility in various degree, limited again to a certain extent the safe handling filling quantity of cold-producing medium.In order to reduce room air conditioner filling quantity of refrigerant and combustible refrigerant safe handling risk, simultaneously also in order to reduce material consumption and to improve air-conditioner cost performance, for environmental protection refrigerant again optimal design and reduce room air conditioner pipeline and the size tool of two device heat exchanger tubes etc. is of great significance.
Summary of the invention
The present invention aims to provide a kind of room air conditioner, large and use the high technical problem of risk safely to solve room air conditioner of the prior art filling quantity when using low temperature chamber effect to dive value cold-producing medium.
To achieve these goals, according to an aspect of the present invention, provide a kind of room air conditioner, comprised outdoor unit, indoor unit, connects indoor unit and outdoor unit to form the tube connector of refrigerant circulation loop, is arranged on the restricting element in tube connector; Indoor unit comprises indoor heat exchanger, and outdoor unit comprises compressor and outdoor heat exchanger; Tube connector comprises: high-pressure gas pipe, connects the exhaust outlet of compressor and the first end of outdoor heat exchanger; Highly pressurised liquid pipe, the second end of junction chamber external heat exchanger and the first end of restricting element; Low pressure liquid pipe, the second end of connecting joint fluid element and the first end of indoor heat exchanger; Low-pressure gas pipe, connects the second end of indoor heat exchanger and the air entry of compressor; The inside diameter ranges of low-pressure gas pipe is 5.5 millimeters to 14.5 millimeters; The inside diameter ranges of high-pressure gas pipe is 4 millimeters to 10 millimeters; The inside diameter ranges of low pressure liquid pipe is 3 millimeters to 8.5 millimeters; The inside diameter ranges of highly pressurised liquid pipe is 2.5 millimeters to 6.5 millimeters.
Further, the specified refrigerating capacity of room air conditioner is less than 3.3 kilowatts, and the inside diameter ranges of low-pressure gas pipe is 5.5 millimeters to 7.5 millimeters.
Further, the inside diameter ranges of low-pressure gas pipe is 6.5 millimeters to 7 millimeters.
Further, the specified refrigerating capacity of room air conditioner is between 3.3 kilowatts to 5 kilowatts, and the inside diameter ranges of low-pressure gas pipe is 7 millimeters to 9 millimeters.
Further, the inside diameter ranges of low-pressure gas pipe is 8 millimeters to 8.6 millimeters.
Further, the specified refrigerating capacity of room air conditioner is between 5 kilowatts to 10 kilowatts, and the inside diameter ranges of low-pressure gas pipe is 8.5 millimeters to 11 millimeters.
Further, the inside diameter ranges of low-pressure gas pipe is 10 millimeters to 10.6 millimeters.
Further, the specified refrigerating capacity of room air conditioner is between 10 kilowatts to 16 kilowatts, and the inside diameter ranges of low-pressure gas pipe is 11 millimeters to 14.5 millimeters.
Further, the inside diameter ranges of low-pressure gas pipe is 11.5 millimeters to 12.5 millimeters.
Further, the specified refrigerating capacity of room air conditioner is less than 3.6 kilowatts, and the inside diameter ranges of high-pressure gas pipe is 4.0 millimeters to 6.5 millimeters, and the inside diameter ranges of highly pressurised liquid pipe is 2.5 millimeters to 5 millimeters, and the inside diameter ranges of low pressure liquid pipe is 3 millimeters to 5 millimeters.
Further, the inside diameter ranges of high-pressure gas pipe is 4.5 millimeters to 5.5 millimeters, and the inside diameter ranges of highly pressurised liquid pipe is 3.8 millimeters to 4.5 millimeters, and the inside diameter ranges of low pressure liquid pipe is 3.8 millimeters to 4.5 millimeters.
Further, the specified refrigerating capacity of room air conditioner is between 3.6 kilowatts to 7.2 kilowatts, the inside diameter ranges of high-pressure gas pipe is 5.5 millimeters to 7.5 millimeters, and the inside diameter ranges of highly pressurised liquid pipe is 2.5 millimeters to 5 millimeters, and the inside diameter ranges of low pressure liquid pipe is 4.5 millimeters to 6.5 millimeters.
Further, the inside diameter ranges of high-pressure gas pipe is 6.5 millimeters to 7.2 millimeters, and the inside diameter ranges of highly pressurised liquid pipe is 3.8 millimeters to 4.5 millimeters, and the inside diameter ranges of low pressure liquid pipe is 4.8 millimeters to 5.5 millimeters.
Further, the specified refrigerating capacity of room air conditioner is between 7.2 kilowatts to 16 kilowatts, the inside diameter ranges of high-pressure gas pipe is 7.2 millimeters to 10 millimeters, and the inside diameter ranges of highly pressurised liquid pipe is 4.5 millimeters to 6.5 millimeters, and the inside diameter ranges of low pressure liquid pipe is 5.5 millimeters to 8.5 millimeters.
Further, the inside diameter ranges of high-pressure gas pipe is 7.5 millimeters to 8.5 millimeters, and the inside diameter ranges of highly pressurised liquid pipe is 4.8 millimeters to 5.5 millimeters, and the inside diameter ranges of low pressure liquid pipe is 6.5 millimeters to 7.2 millimeters.
Further, outdoor unit also comprises exhaust outlet and the air entry that connects respectively compressor, the four-way change-over valve of outdoor heat exchanger and indoor heat exchanger, the S pipe that four-way change-over valve connects the air entry of compressor is 1 with the ratio of internal diameter that is connected the E pipe of indoor heat exchanger, S pipe is 1～1.8 with the ratio of internal diameter of D pipe that is connected the exhaust outlet of compressor, S pipe is 1～1.8 with the ratio of the internal diameter of the C pipe of junction chamber external heat exchanger, the main valve body of four-way change-over valve is 1.8～2.5 with the ratio of the internal diameter of S pipe, the length of main valve body is 8～11 with the ratio of S bore, S pipe is 0.95～1.05 with the ratio of the internal diameter of low-pressure gas pipe, D pipe is 0.95～1.05 with the ratio of the internal diameter of high-pressure gas pipe.
Further, restricting element is electric expansion valve or heating power expansion valve, the second pipe arrangement of the second end of restricting element is 1～1.4 with the ratio of the internal diameter of the first pipe arrangement of first end, the second pipe arrangement of restricting element is 3～5 with the ratio of the internal diameter of the valve port of restricting element, the second pipe arrangement is that the 0.95～1.05, first pipe arrangement is 0.95～1.05 with the ratio of the internal diameter of highly pressurised liquid pipe with the ratio of the internal diameter of low pressure liquid pipe.
Further, the ratio of the expand tube external diameter of the heat exchanger tube of indoor heat exchanger and the heat exchanger tube of outdoor heat exchanger is 0.67～1.5.
Further, the expand tube external diameter scope of indoor heat exchanger is 4.15 millimeters to 7.5 millimeters.
Further, indoor heat exchanger comprises that expand tube external diameter scope is the heat exchanger tube of the combination of 4.15 millimeters to 4.3 millimeters or 5.15 millimeters to 5.35 millimeters or 6.2 millimeters to 6.35 millimeters or 6.55 millimeters to 6.75 millimeters or 7.25 millimeters to 7.5 millimeters or above number range.
Further, the expand tube external diameter scope of outdoor heat exchanger is 4.15 millimeters to 8.5 millimeters.
Further, outdoor heat exchanger comprises that expand tube external diameter scope is the heat exchanger tube of the combination of 4.15 millimeters to 4.3 millimeters or 5.15 millimeters to 5.35 millimeters or 6.2 millimeters to 6.35 millimeters or 6.55 millimeters to 6.75 millimeters or 7.25 millimeters to 7.5 millimeters or 8.25 to 8.5 millimeters or above number range.
Further, indoor heat exchanger or outdoor heat exchanger are micro-channel heat exchanger, and the flat tube cross section outer rim width of micro-channel heat exchanger is 12 millimeters to 25 millimeters, is highly 1 millimeter to 2 millimeters, and hole count is 0.5 to 1.2/millimeter with the ratio of width.
Further, indoor heat exchanger or outdoor heat exchanger are micro-channel heat exchanger, and the flat tube cross section outer rim width of micro-channel heat exchanger is 14 millimeters to 18 millimeters or 18 to 20 millimeters, are highly 1.2 millimeters to 1.4 millimeters or 1.4 millimeters to 2 millimeters.
Further, low-pressure gas pipe is 1.5～2.1 with the ratio of the internal diameter of low pressure liquid pipe, and low-pressure gas pipe is 1.1～1.7 with the ratio of the internal diameter of high-pressure gas pipe, and low-pressure gas pipe is 1.6～2.5 with the ratio of the internal diameter of highly pressurised liquid pipe.
Further, room air conditioner uses the mix refrigerant of R32 cold-producing medium or R32 and R1234yf or R1234ze, and in mix refrigerant, the mass ratio of R32 is more than 50%.
The room air conditioner of applying technical scheme of the present invention is reduced the size of room air conditioner pipeline and two device heat exchanger tubes etc., promotes the energy-conservation and Environmental Protection Level of room air conditioner.Further, can reduce cold-producing medium use amount and adapt to the application of environmental protection refrigerant.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the system diagram of the first embodiment of room air conditioner of the present invention;
Fig. 2 shows the system diagram of the second embodiment of room air conditioner of the present invention;
The dimensional drawing that pipeline internal diameter when the room air conditioner that Fig. 3 shows prior art uses R22 cold-producing medium increases with specified refrigerating capacity;
The size table that pipeline internal diameter when the room air conditioner that Fig. 4 shows prior art uses R22 cold-producing medium increases with specified refrigerating capacity;
The dimensional drawing that pipeline internal diameter when Fig. 5 shows room air conditioner use R32 cold-producing medium of the present invention increases with specified refrigerating capacity; And
The size table that pipeline internal diameter when Fig. 6 shows room air conditioner use R32 cold-producing medium of the present invention increases with specified refrigerating capacity.
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Referring to Fig. 1, the first embodiment of room air conditioner of the present invention is by outdoor unit 12 and an indoor unit 1301 and be connected indoor unit 1301 and form to form the first tube connector 801 and second tube connector 901 of refrigerant circulation loop with outdoor unit 12.Wherein indoor unit comprises an indoor heat exchanger 301.Outdoor unit 12 comprises compressor 1 and outdoor heat exchanger 2 etc.Indoor unit 1301 or outdoor unit 12 comprise the restricting element 401 being arranged in connecting line, in outdoor unit 12, be provided with liquid stop valve 601, gas stop valve 602, gas-liquid separator 7, is connected to the parts such as four-way change-over valve 5 between compressor 1, outdoor heat exchanger 2, gas-liquid separator 7 and gas stop valve 602.Restricting element 401 can be electric expansion valve, heating power expansion valve, restriction sleeve and capillary, can be also the combination of aforementioned any element.Indoor heat exchanger 301 and outdoor heat exchanger 2 can be finned tube exchanger or micro-channel heat exchanger.Compressor 1 can be rotor compressor or screw compressor; Compressor 1 can be constant speed compressor or speed variable compressor.Cold-producing medium filled in room air conditioner can or contain the above HFC32 of 50% (mass ratio) and the mix refrigerant of HFO1234yf (tetrafluoeopropene) or HFO1234ze (tetrafluoeopropene) for HFC32 (difluoromethane).
Referring to Fig. 2, the second embodiment of room air conditioner of the present invention is with respect to the change of the first embodiment, has increased by second indoor unit 1302 for being arranged on second room outside the first indoor unit 1301.The first indoor heat exchanger 301 and the second indoor heat exchanger 302 are set respectively in two indoor units.The first indoor unit 1301 comprises that first throttle element 401, the second indoor unit 1302 comprise second section fluid element 402.
Except two embodiment that illustrate, room air conditioner of the present invention can comprise the arbitrarily combination of an indoor heat exchanger and outdoor heat exchanger, to adapt to the not demand of chummery number and ambient conditions.
Adopt thermodynamic cycle theory analysis (calculate with analyze operating mode and the result drawing respectively in Table 1 and table 2) show, the unit mass refrigerating capacity of R32 all exceeds more than 50% than R22 and R410A, under equal refrigerating capacity, R32 mass flow significantly reduces, heat exchanger and pipeline flow pressure drop and corresponding saturated temperature drop all will significantly reduce, and this just means that the heat exchanger of R32 room air conditioner and pipeline size have and reduces more greatly space.R32 volume refrigerating capacity compressor exceeds approximately 57% and 9% than R22 and R410A respectively, and under equal refrigerating capacity, the relative R22 of R32 compressor displacement will significantly reduce, and identical R410A also has obviously and reduces.
| Condensation temperature | Coldly go out degree of supercooling | Evaporating temperature | Steam the degree of superheat |
| 44 | 5 | 10 | 5 |
| The saturated temperature drop of blast pipe | The saturated temperature drop of condenser | The saturated temperature drop of evaporimeter | The saturated temperature drop of air intake duct |
| 0.5 | 1 | 3 | 2 |
Table 1 cold-producing medium thermodynamic cycle theory analysis operating mode (unit: ℃)
| Cold-producing medium | R22 | R410A | R32 | |
| Quality refrigerating capacity | kJ/kg | 165.3 | 167.7 | 252.1 |
| Volume refrigerating capacity compressor | kJ/m3 | 4254 | 6147 | 6691 |
| Blast pipe pressure drop | kPa | 20.18 | 31.71 | 32.66 |
| Condenser pressure drop | kPa | 39.83 | 55.53 | 64.43 |
| Evaporimeter pressure drop | kPa | 63.61 | 102.5 | 102 |
| Air intake duct pressure drop | kPa | 40.09 | 62.33 | 64.33 |
Table 2 cold-producing medium thermodynamic cycle theoretical analysis result
From heat exchanger heat exchange angle analysis, thereby the saturated temperature drop that in condenser or evaporimeter, flow pressure drop causes reduces exchange capability of heat by the effective heat transfer temperature difference that reduces heat exchanger.As seen from Table 2, under identical saturated temperature drop, use the condenser of R32 and the pressure drop that evaporimeter pressure drop is all significantly higher than the like product that uses R22, that is under equal heat exchanger pressure drop, the saturated temperature drop of R32 will be starkly lower than R22, and this lays a good foundation for R32 heat exchanger heat-exchanging tube size reduction.Similarly analyze and be equally applicable to other as parts such as restricting element and valve classes.
Thus, the present invention has reduced the size of the parts such as pipeline, heat exchanger and restricting element of room air conditioner, and the present invention uses the room air conditioner system pipeline dimensional configurations scheme of R32 as follows:
During specified refrigerating capacity Qe=2.0～16kW, low-pressure gas pipe is 1.5～2.1 with the ratio of the internal diameter of low pressure liquid pipe, and low-pressure gas pipe is 1.1～1.7 with the ratio of the internal diameter of high-pressure gas pipe, and low-pressure gas pipe is 1.6～2.5 with the ratio of the internal diameter of highly pressurised liquid pipe.
During Qe≤3.3kW, low-pressure gas bore is 5.5～7.5mm, is 6.5～7.0mm between dominant area.During 3.3kW < Qe≤5.0kW, low-pressure gas bore is 7.0～9.0mm, is 8.0～8.6mm between dominant area.During 5.0kW < Qe≤10.0kW, low-pressure gas bore is 8.5～11mm, is 10～10.6mm between dominant area.During 10kW < Qe≤16kW, low-pressure gas bore is 11～14.5mm, is 11.5～12.5mm between dominant area.
During Qe≤3.6kW, gases at high pressure bore is 4.0～6.5mm, is 4.5～5.5mm between dominant area; During 3.6kW < Qe≤7.2kW, gases at high pressure bore is 5.5～7.5mm, is 6.5～7.2mm between dominant area; During 7.2kW < Qe≤16.0kW, gases at high pressure bore is 7.2～10mm, is 7.5～8.5mm between dominant area.
During Qe≤7.2kW, highly pressurised liquid bore is 2.5～5.0mm, is 3.8～4.5mm between dominant area; During 7.2kW < Qe≤16.0kW, highly pressurised liquid bore is 4.5～6.5mm, is 4.8～5.5mm between dominant area.
During Qe≤3.6kW, low pressure liquid bore is 3.0～5.0mm, is 3.8～4.5mm between dominant area; During 3.6kW < Qe≤7.2kW, low pressure liquid bore is 4.5～6.5mm, is 4.8～5.5mm between dominant area; During 7.2kW < Qe≤16.0kW, low pressure liquid bore is 5.5～8.5mm, is 6.5～7.2mm between dominant area.
Above-described high-pressure gas pipe refers to the general name of the tube connector 1101,1102 that the exhaust outlet of the compressor 1 in outdoor unit 12 is connected with outdoor heat exchanger 2; Low-pressure gas pipe refers to tube connector 801,802 general names that the indoor heat exchanger 301,302 in indoor unit 1301,1302 is connected with compressor 1 air entry of outdoor unit 12; Highly pressurised liquid pipe refers to the general name (in the first embodiment for tube connector 902, the second embodiment in be tube connector 901,902) of the tube connector that the outdoor heat exchanger 2 of outdoor unit 12 is connected with main restricting element 401,402; The tube connector that low pressure liquid Guan Zhizhu restricting element 401,402 is connected with the indoor heat exchanger 301,302 of indoor unit 1301,1302 (in the first embodiment for be tube connector 1001,1002 in tube connector 901, the second embodiment) general name.
Above-mentioned tube connector can be copper pipe, aluminum pipe, copper alloy tube, aluminium-alloy pipe, stainless steel tube, can be also the compound tube of aforementioned any materials, and syntagmatic comprises series, parallel or compound (as copper in aluminium in outer copper or outer aluminium).
When outdoor unit contains four-way change-over valve 5, the S pipe of four-way change-over valve 5 is 1 with the ratio of the internal diameter of E pipe, S pipe is 1～1.8 with the ratio of the internal diameter of D pipe, S pipe is 1～1.8 with the ratio of the internal diameter of C pipe, four-way change-over valve 5 main valve bodies are 1.8～2.5 with the ratio of the internal diameter of S pipe, and main valve body length is 8～11 with the ratio of S bore.Within the scope of specified refrigerating capacity Qe=2.0～16kW, the S pipe of four-way change-over valve is 0.95～1.05 with the ratio of the internal diameter of low-pressure gas pipe, and four-way change-over valve D pipe is 0.95～1.05 with the ratio of the internal diameter of high-pressure gas pipe.The material of above-mentioned main valve of four-way reversing valve body, D pipe, S pipe, E pipe and C pipe can be the combination of copper alloy, aluminium alloy, stainless steel and previous materials.
When restricting element 401,402 is electric expansion valve or heating power expansion valve, the second pipe arrangement of expansion valve is 1～1.4 with the ratio of the internal diameter of the first pipe arrangement, and the ratio of the internal diameter of the second pipe arrangement of expansion valve and expansion valve valve port (orifice) is 3～5.Within the scope of specified refrigerating capacity Qe=2.0～16kW, expansion valve the second pipe arrangement is 0.95～1.05 with the ratio of the internal diameter of low pressure liquid pipe, and expansion valve the first pipe arrangement is 0.95～1.05 with the ratio of the internal diameter of highly pressurised liquid pipe.Above-mentioned expansion valve the first pipe arrangement is the pipe arrangement being directly connected with highly pressurised liquid pipe, and the second pipe arrangement is the pipe arrangement being directly connected with low pressure liquid pipe.Above-mentioned expansion valve the first pipe arrangement and the second pipe arrangement can be copper pipe, aluminum pipe, copper alloy tube, aluminium-alloy pipe, stainless steel tube, can be also the compound tubes of aforementioned any materials.
During specified refrigerating capacity Qe=2.0～16kW, the heat exchanger tube of indoor heat exchanger 301,302 is 0.67～1.5 with the ratio of the expand tube external diameter of the heat exchanger tube of outdoor heat exchanger 2.Indoor heat exchanger expand tube external diameter is 4.15～7.5mm, is 4.15～4.3mm, 5.15～5.35mm, 6.2～6.35mm, 6.55～6.75mm and 7.25～7.5mm between dominant area, or any combination in above-mentioned interval is interval; Outdoor heat exchanger expand tube external diameter is 4.15～8.5mm, is 4.15～4.3mm, 5.15～5.35mm, 6.2～6.35mm, 6.55～6.75mm, 7.25～7.5mm and 8.25～8.5mm between dominant area, or any combination in above-mentioned interval is interval.Above-mentioned heat exchanger tube can be copper pipe, aluminum pipe, copper alloy tube, aluminium-alloy pipe, immortal steel pipe, can be also the compound tube of aforementioned any materials, and syntagmatic comprises series, parallel or compound (as copper in aluminium in outer copper or outer aluminium).Above-mentioned heat exchanger is fin-tube heat exchanger, the inner enhanced heat transfer surfaces structure of helicla flute or straight trough etc. in addition of above-mentioned heat exchanger tube.
During specified refrigerating capacity Qe=2.0～16kW, indoor heat exchanger or outdoor heat exchanger can also be micro-channel heat exchangers, micro-channel flat cross section outer rim width * be highly (12～25mm) * (1～2mm), between dominant area is (14～18mm) * (1.2～1.4mm) and (18～20mm) * (1.4～2mm).Above-mentioned micro-channel heat exchanger at least comprises micro-channel flat, Wavelike finned and collector.The dividing wall structure that above-mentioned micro-channel flat has one or more endoporus and separates endoporus, inner hole section is rectangle, circle or triangle etc.The interior hole number of above-mentioned micro-channel flat is 0.5～1.2/mm with the ratio of above-mentioned micro-channel flat cross section outer rim width.Above-mentioned micro-channel flat is aluminium-alloy pipe.
Low-pressure gas pipe is 1.5～2.1 with the ratio of the internal diameter of low pressure liquid pipe, and low-pressure gas pipe is 1.1～1.7 with the ratio of the internal diameter of high-pressure gas pipe, and low-pressure gas pipe is 1.6～2.5 with the ratio of the internal diameter of highly pressurised liquid pipe.
A kind of embodiment of the tube connector specifications parameter of room air conditioner of the present invention is in Table 3, and corresponding pipeline internal diameter collection of illustrative plates is shown in Fig. 5 and Fig. 6.As a comparison, Fig. 3 and Fig. 4 have provided a kind of R22 room air conditioner pipeline internal diameter collection of illustrative plates of the prior art, and under visible same nominal refrigerating capacity, the pipeline internal diameter of R32 room air conditioner of the present invention significantly reduces.
Specifications parameter under 5 one kinds of embodiment of four-way change-over valve of room air conditioner of the present invention is in Table 4.
The electric expansion valve 401 of room air conditioner of the present invention, the specifications parameter under 402 a kind of embodiment are in Table 5.
Indoor heat exchanger 301,302 and outdoor heat exchanger 2 under a kind of embodiment of room air conditioner of the present invention are fin-tube heat exchanger, and heat exchanger tube expand tube external diameter is in Table 6.
Indoor heat exchanger 301,302 under the another kind of embodiment of room air conditioner of the present invention is fin-tube heat exchanger, and outdoor heat exchanger 2 is micro-channel heat exchanger, and the specification under a kind of embodiment of heat exchanger tube is in Table 7.
Tube connector specification table under a kind of embodiment of table 3 R32 room air conditioner of the present invention
Four-way change-over valve pipe specification table under a kind of embodiment of table 4 R32 room air conditioner of the present invention
Electric expansion valve specifications parameter under a kind of embodiment of table 5 R32 room air conditioner of the present invention
Heat exchanger specification under a kind of embodiment of table 6 R32 room air conditioner of the present invention
Heat exchanger specification under the another kind of embodiment of table 7 R32 room air conditioner of the present invention
From above description, can find out, the above embodiments of the present invention have realized following technique effect: room air conditioner of the present invention has reduced the size of pipeline, can under existing manufacturing technology level, farthest reduce R32 filling quantity and pipeline raw material use amount, realize the more excellent collocation of R32 room air conditioner parts pipeline size, there is the effect of significantly subduing R32 room air conditioner carbon emission total amount and raw materials consumption.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (26)
1. a room air conditioner, comprises outdoor unit (12), and indoor unit connects described indoor unit and outdoor unit (12) to form the tube connector of refrigerant circulation loop, is arranged on the restricting element in described tube connector; Described indoor unit comprises indoor heat exchanger, and described outdoor unit (12) comprises compressor (1) and outdoor heat exchanger (2);
Described tube connector comprises: high-pressure gas pipe, connects the exhaust outlet of described compressor (1) and the first end of described outdoor heat exchanger (2); Highly pressurised liquid pipe, connects the second end of described outdoor heat exchanger (2) and the first end of described restricting element; Low pressure liquid pipe, connects the second end of described restricting element and the first end of described indoor heat exchanger; Low-pressure gas pipe, connects the second end of described indoor heat exchanger and the air entry of described compressor (1);
It is characterized in that, the inside diameter ranges of described low-pressure gas pipe is 5.5 millimeters to 14.5 millimeters;
The inside diameter ranges of described high-pressure gas pipe is 4 millimeters to 10 millimeters;
The inside diameter ranges of described low pressure liquid pipe is 3 millimeters to 8.5 millimeters;
The inside diameter ranges of described highly pressurised liquid pipe is 2.5 millimeters to 6.5 millimeters.
2. room air conditioner according to claim 1, is characterized in that, the specified refrigerating capacity of described room air conditioner is less than 3.3 kilowatts, and the inside diameter ranges of described low-pressure gas pipe is 5.5 millimeters to 7.5 millimeters.
3. room air conditioner according to claim 2, is characterized in that, the inside diameter ranges of described low-pressure gas pipe is 6.5 millimeters to 7 millimeters.
4. room air conditioner according to claim 1, is characterized in that, the specified refrigerating capacity of described room air conditioner is between 3.3 kilowatts to 5 kilowatts, and the inside diameter ranges of described low-pressure gas pipe is 7 millimeters to 9 millimeters.
5. room air conditioner according to claim 4, is characterized in that, the inside diameter ranges of described low-pressure gas pipe is 8 millimeters to 8.6 millimeters.
6. room air conditioner according to claim 1, is characterized in that, the specified refrigerating capacity of described room air conditioner is between 5 kilowatts to 10 kilowatts, and the inside diameter ranges of described low-pressure gas pipe is 8.5 millimeters to 11 millimeters.
7. room air conditioner according to claim 6, is characterized in that, the inside diameter ranges of described low-pressure gas pipe is 10 millimeters to 10.6 millimeters.
8. room air conditioner according to claim 1, is characterized in that, the specified refrigerating capacity of described room air conditioner is between 10 kilowatts to 16 kilowatts, and the inside diameter ranges of described low-pressure gas pipe is 11 millimeters to 14.5 millimeters.
9. room air conditioner according to claim 8, is characterized in that, the inside diameter ranges of described low-pressure gas pipe is 11.5 millimeters to 12.5 millimeters.
10. room air conditioner according to claim 1, it is characterized in that, the specified refrigerating capacity of described room air conditioner is less than 3.6 kilowatts, the inside diameter ranges of described high-pressure gas pipe is 4.0 millimeters to 6.5 millimeters, the inside diameter ranges of described highly pressurised liquid pipe is 2.5 millimeters to 5 millimeters, and the inside diameter ranges of described low pressure liquid pipe is 3 millimeters to 5 millimeters.
11. room air conditioners according to claim 10, it is characterized in that, the inside diameter ranges of described high-pressure gas pipe is 4.5 millimeters to 5.5 millimeters, and the inside diameter ranges of described highly pressurised liquid pipe is 3.8 millimeters to 4.5 millimeters, and the inside diameter ranges of described low pressure liquid pipe is 3.8 millimeters to 4.5 millimeters.
12. room air conditioners according to claim 1, it is characterized in that, the specified refrigerating capacity of described room air conditioner is between 3.6 kilowatts to 7.2 kilowatts, the inside diameter ranges of described high-pressure gas pipe is 5.5 millimeters to 7.5 millimeters, the inside diameter ranges of described highly pressurised liquid pipe is 2.5 millimeters to 5 millimeters, and the inside diameter ranges of described low pressure liquid pipe is 4.5 millimeters to 6.5 millimeters.
13. room air conditioners according to claim 12, it is characterized in that, the inside diameter ranges of described high-pressure gas pipe is 6.5 millimeters to 7.2 millimeters, and the inside diameter ranges of described highly pressurised liquid pipe is 3.8 millimeters to 4.5 millimeters, and the inside diameter ranges of described low pressure liquid pipe is 4.8 millimeters to 5.5 millimeters.
14. room air conditioners according to claim 1, it is characterized in that, the specified refrigerating capacity of described room air conditioner is between 7.2 kilowatts to 16 kilowatts, the inside diameter ranges of described high-pressure gas pipe is 7.2 millimeters to 10 millimeters, the inside diameter ranges of described highly pressurised liquid pipe is 4.5 millimeters to 6.5 millimeters, and the inside diameter ranges of described low pressure liquid pipe is 5.5 millimeters to 8.5 millimeters.
15. room air conditioners according to claim 14, it is characterized in that, the inside diameter ranges of described high-pressure gas pipe is 7.5 millimeters to 8.5 millimeters, and the inside diameter ranges of described highly pressurised liquid pipe is 4.8 millimeters to 5.5 millimeters, and the inside diameter ranges of described low pressure liquid pipe is 6.5 millimeters to 7.2 millimeters.
16. room air conditioners according to claim 1, it is characterized in that, described outdoor unit (12) also comprises exhaust outlet and the air entry that connects respectively described compressor (1), the four-way change-over valve of described outdoor heat exchanger (2) and described indoor heat exchanger, the S pipe that described four-way change-over valve connects the air entry of described compressor (1) is 1 with the ratio of internal diameter that is connected the E pipe of described indoor heat exchanger, described S pipe is 1～1.8 with the ratio of internal diameter of D pipe that is connected the exhaust outlet of described compressor (1), described S pipe is 1～1.8 with the ratio of internal diameter that is connected the C pipe of described outdoor heat exchanger (2), the main valve body of described four-way change-over valve is 1.8～2.5 with the ratio of the internal diameter of described S pipe, the length of described main valve body is 8～11 with the ratio of described S bore, described S pipe is 0.95～1.05 with the ratio of the internal diameter of described low-pressure gas pipe, described D pipe is 0.95～1.05 with the ratio of the internal diameter of described high-pressure gas pipe.
17. room air conditioners according to claim 1, it is characterized in that, described restricting element is electric expansion valve or heating power expansion valve, the second pipe arrangement of the second end of described restricting element is 1～1.4 with the ratio of the internal diameter of the first pipe arrangement of first end, the second pipe arrangement of described restricting element is 3～5 with the ratio of the internal diameter of the valve port of described restricting element, described the second pipe arrangement is 0.95～1.05 with the ratio of the internal diameter of described low pressure liquid pipe, and described the first pipe arrangement is 0.95～1.05 with the ratio of the internal diameter of described highly pressurised liquid pipe.
18. room air conditioners according to claim 1, is characterized in that, the ratio of the expand tube external diameter of the heat exchanger tube of the heat exchanger tube of described indoor heat exchanger and described outdoor heat exchanger (2) is 0.67～1.5.
19. room air conditioners according to claim 18, is characterized in that, the expand tube external diameter scope of described indoor heat exchanger is 4.15 millimeters to 7.5 millimeters.
20. room air conditioners according to claim 19, it is characterized in that, described indoor heat exchanger comprises that expand tube external diameter scope is the heat exchanger tube of the combination of 4.15 millimeters to 4.3 millimeters or 5.15 millimeters to 5.35 millimeters or 6.2 millimeters to 6.35 millimeters or 6.55 millimeters to 6.75 millimeters or 7.25 millimeters to 7.5 millimeters or above number range.
21. room air conditioners according to claim 18, is characterized in that, the expand tube external diameter scope of described outdoor heat exchanger (2) is 4.15 millimeters to 8.5 millimeters.
22. room air conditioners according to claim 21, it is characterized in that, described outdoor heat exchanger comprises that expand tube external diameter scope is the heat exchanger tube of the combination of 4.15 millimeters to 4.3 millimeters or 5.15 millimeters to 5.35 millimeters or 6.2 millimeters to 6.35 millimeters or 6.55 millimeters to 6.75 millimeters or 7.25 millimeters to 7.5 millimeters or 8.25 to 8.5 millimeters or above number range.
23. room air conditioners according to claim 1, it is characterized in that, described indoor heat exchanger or described outdoor heat exchanger (2) are micro-channel heat exchanger, the flat tube cross section outer rim width of described micro-channel heat exchanger is 12 millimeters to 25 millimeters, be highly 1 millimeter to 2 millimeters, hole count is 0.5 to 1.2/millimeter with the ratio of width.
24. room air conditioners according to claim 23, it is characterized in that, described indoor heat exchanger or described outdoor heat exchanger (2) are micro-channel heat exchanger, the flat tube cross section outer rim width of described micro-channel heat exchanger is 14 millimeters to 18 millimeters or 18 to 20 millimeters, is highly 1.2 millimeters to 1.4 millimeters or 1.4 millimeters to 2 millimeters.
25. room air conditioners according to claim 1, it is characterized in that, described low-pressure gas pipe is 1.5～2.1 with the ratio of the internal diameter of described low pressure liquid pipe, described low-pressure gas pipe is 1.1～1.7 with the ratio of the internal diameter of described high-pressure gas pipe, and described low-pressure gas pipe is 1.6～2.5 with the ratio of the internal diameter of described highly pressurised liquid pipe.
26. according to the room air conditioner described in any one in claim 1 to 25, it is characterized in that, described room air conditioner uses the mix refrigerant of R32 cold-producing medium or R32 and R1234yf or R1234ze, and in described mix refrigerant, the mass ratio of R32 is more than 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210238165.3A CN103542565A (en) | 2012-07-10 | 2012-07-10 | Room air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210238165.3A CN103542565A (en) | 2012-07-10 | 2012-07-10 | Room air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103542565A true CN103542565A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210238165.3A Pending CN103542565A (en) | 2012-07-10 | 2012-07-10 | Room air-conditioner |
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| Country | Link |
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| CN (1) | CN103542565A (en) |
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| CN111306849A (en) * | 2019-11-12 | 2020-06-19 | 珠海格力电器股份有限公司 | Expansion valve control method and device for improving stability and air conditioning equipment |
| US20220049879A1 (en) * | 2019-09-13 | 2022-02-17 | Carrier Corporation | Vapor compression system |
| WO2022050351A1 (en) * | 2020-09-04 | 2022-03-10 | ダイキン工業株式会社 | Use of refrigerant in refrigeration cycle apparatus, and refrigeration cycle apparatus |
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| US20220049879A1 (en) * | 2019-09-13 | 2022-02-17 | Carrier Corporation | Vapor compression system |
| CN111306849A (en) * | 2019-11-12 | 2020-06-19 | 珠海格力电器股份有限公司 | Expansion valve control method and device for improving stability and air conditioning equipment |
| CN111306849B (en) * | 2019-11-12 | 2020-12-15 | 珠海格力电器股份有限公司 | Expansion valve control method and device for improving stability and air conditioning equipment |
| WO2022050351A1 (en) * | 2020-09-04 | 2022-03-10 | ダイキン工業株式会社 | Use of refrigerant in refrigeration cycle apparatus, and refrigeration cycle apparatus |
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Application publication date: 20140129 |