The previous article analyzes the central air conditioning Japanese article, this time we talk about the central air conditioning domestic article. Domestic central air conditioning started late, several major brands are basically inherited from Japanese products, OEM or joint venture experience, and the development of China's automotive industry is very similar. "Grass snake grey line, ambush extension of thousands of miles", in the fierce market competition, the rise of the brand is by no means a day's work, from the accumulation of thin hair. Domestic central air conditioning brand is able to quickly "run", a big reason is the long accumulation of the early stage. In recent years, the national goods more and more attention to research and development, many technologies tend to mature, but the core components and technology, still immature, such as the compressor, basically still have to rely on the Japanese system.
First, the United States:
The United States as a domestic home appliances, the big brother, or very weighty. Midea was founded in 1968, after 54 years of development, has become a set of smart home, building technology, industrial technology, robotics and automation, digital innovation in five business sectors as one of the globalization of science and technology group, the past five years to invest in research and development funds of nearly 45 billion (annual revenue accounted for more than 3.5%), with 28 R & D centers around the world and 34 major production bases. 1999, the central air conditioning market is still basically the same. In 1999, the national central air conditioning market is still basically a Daikin dominant, with a keen sense of the market, Midea actively and Toshiba technical cooperation, and Toshiba's extreme inverter technology into their own central air conditioning products. To date, the United States has completed the acquisition of Toshiba white goods business, *** enjoy Toshiba in the field of air conditioning more than 4,000 patents, technical strength and brand reputation double harvest. With Toshiba's technical support, Midea has now mastered two key cores in the field of air conditioning, namely, compressor and high-precision full DC frequency conversion technology. Midea and Toshiba cooperation established Midea compressor, its excellent performance even let it return to the Japanese market, is now the standard of the United States of America's domestic central air conditioning; its Welling motor as a first-tier manufacturers of domestic motors, supplied to the United States of America's Welling DC brushless motors, which greatly improves its performance and reduces the noise. Midea home central air conditioning currently has the following series: Pilot, Ideal Home, MDS (Linglong), (TR + S, TR mini, TRF these have been discontinued, directly skipped), cool wind. The whole seems to have a strong trace of Toshiba.
The United States of America's central air conditioning machine warranty of 6 years, its after-sales is such that the first year is who installs who is responsible for, for example, dealer installation, the first year by the dealer is responsible for, and after that by the United States of America's own masters are responsible for the masters of the United States of America's local authorized partner outlets to arrange. The United States of America's after-sales service is also second to none in the country, the response speed is fast, 400 official customer service 24 hours a day, and the United States of America's service public number can be reported in real time.
1, cool wind:
Cool wind central air conditioning is the United States of America refrigeration division of the product, it can not even be called the United States of America central air conditioning, what do you mean understand it! Cool wind and the United States of America's own Linglong are not comparable, the performance of the crotch, the price is well, but also cheap. There is really no need to buy, really limited budget is not as good as a tow a duct machine + splitter, than the cool wind to a lot of real.
Conclusion: see direct detour.
2, MDS (Linglong):
MDS is now the United States of America online special models, in fact, is the former Linglong series, is the United States of America central air conditioning entry-level products. The pipe connection is divergent pipe connection. Outer machine: the second generation outboard mold full of cool wind wind; 160 and above is a double fan, 160 below is a single fan; compressor for the United States of America Chi's dual-rotor DC inverter; the use of 2.5 rows of condenser, the back in order to reduce the cost of the protection network shaking omitted; support for the reversal of the dust removal; after the update of the second generation of outboard for zhongshan taiyang DC brushless motor; four-way valve and electronic expansion valve are three flowers; equipped with the most perfect gold fins, claimed to be more stable hydrophilic, resistant to dust, and the most stable. It is said that hydrophilic more stable, more durable corrosion resistance (we do not know how the actual). Currently, the updated second-generation products in the inner machine: the use of Welling copper wire brushless motor, PTC electric auxiliary heat external in the evaporator side (so you can not install 3D air vents); heat exchanger upgraded to the C-type, the net wash strong row; the inner machine with self-cleaning function.
Summary: the second generation compared to the first generation, a small part of the enhancement, but the overall seems to be a reduction, especially in terms of craftsmanship to reduce the obvious (mainly because of the United States from the United States of America HVAC into the United States of America refrigeration, the United States of America refrigeration before the production of the cool wind, can be imagined), but the core performance is still retained. Overall view of the cost-effective can be.
3, Idealist:
Idealist is currently the main product of the United States. The pipe connection is a divergent pipe connection. Outer machine: the second generation of outer machine mold full of cool wind wind; outer machine 120 start, the whole system double fan; compressor for the United States of America Chi's jet enthalpy double rotor inverter compressor, -25 low temperature continuous heating, strong performance; using double row 56 column condenser (1 generation double row 60 column); after the update of the back of the 2 generation in order to reduce the cost of the elimination of the protective net; support the reversal of the dust removal; the 2 generation of the shell spraying particles feel obvious, sheet metal performance Obviously not as good as 1 generation; motor using Welling DC brushless motor; four-way valve and electronic expansion valve are three flowers; also equipped with the perfect gold fins. At present, the updated second generation of the product internal machine: the motor adopts Welling brushless motor with copper wire; the PCB main board adopts 5-wire DC brushless, without electric auxiliary heat, with optional 3D air outlet; the heat exchanger is shrunken to / type, and the surface is coated with hydrophilic aluminum foil; the internal machine is equipped with self-cleaning function. It is claimed that the ultra-high energy efficiency ratio, IPLV up to 7.5, far more than the national first-class energy efficiency.
Summary: Due to the change of production line, the same 2 generation process reduces significantly, the core performance is still retained. All DC brushless frequency conversion, strong thermal performance of the external machine, low noise operation of the internal machine. Overall, the price/performance ratio is still good.
4, Pilot:
Pilot is currently the flagship product of the United States. The pipe connection is a divergent pipe connection. Outer machine: the second generation of outer machine mold is still full of cool wind wind; outer machine 120 start, the whole system double fan; compressor for the United States Zhi's jet enthalpy double rotor inverter compressor, -25 low temperature continuous heating, strong performance; using double row 60 column condenser; after the update of the 2 generation side retained the protective net, the back of the elimination of the protective net (to reduce the cost); support for the reversal of the dust removal; the motor using the Welling DC Brushless motor; four-way valve and electronic expansion valve are three flowers; also equipped with the perfect gold fins; motherboard cooling using refrigerant cooling + air cooling air duct cooling + isometric heat sinks, belonging to the ultimate experience. As for the inner unit of the second generation product: it adopts Welling copper wire brushless motor; it comes standard with Welling's DC condensate lifting pump; the PCB main board adopts 5-wire DC brushless; the heat exchanger adopts/type; and the inner unit comes with the fourth generation of high temperature wise cleaning function. The biggest difference between the Pilot and the Ideal Home is that: the algorithm supports the sky fluorine and ground water, and can be equipped with underfloor heating, fresh air, and a central humidifier; the inner unit can also be equipped with an optional 3D air outlet, and in addition can be equipped with a smart eye and a no-wind sensation.
Summary: the United States is considered a masterpiece. In fact, in the absence of underfloor heating, new wind and other optional needs, on the ideal home is completely no problem; but if the optional needs of the larger, the cost-effective Pilot is still worth getting.
Second, Gree:
Zhuhai Gree Electric Appliances Company Limited was founded in 1991. The company started by assembling and producing household air conditioners, has developed into a diversified, technology-based global industrial manufacturing group, the industry covers two major fields of household consumer goods and industrial equipment, products are exported to more than 160 countries and regions. The company has 15 air-conditioning production bases at home and abroad, 16 research institutes, 126 research institutes, 1,045 laboratories and 1 academician workstation. Early on, Gree was the OEM OEM for Daikin air conditioners, and in 1996, Gree organized the top professionals in China to set up a central air conditioning research and development institution and started the road of independent research and development. 1999, Gree successfully developed the first generation of intelligent multi-connected units, and in 2002, Gree successfully developed the GMV digital multi-connected air conditioning series as well as the DC inverter multi-connected air conditioning units, breaking the monopoly of the Japanese brands on multi-connected units. In 2014 Gree took the lead in proposing a six-year warranty for household central air conditioning products, which has triggered other domestic manufacturers to follow suit. The company has self-developed Lingda compressor, but the performance is average; its Kaibang motor is Gree's main motor supplier. Gree domestic central air conditioning currently has the following series: FREE, Yaju, Star, Zhirui, Shu Rui.
Gree's central air conditioning machine warranty of 6 years, its after-sales is like this: who installs who is responsible for, if it is installed by the dealer, first by the dealer to visit the door to see, if it is a problem with the installation, the dealer to deal with; if it is a problem with the product, the manufacturer to deal with. When you need after-sales service, you can contact 400 official customer service 24 hours a day, after-sales service and response speed compared to the United States is still worse (dial 400 can be experienced).
1, FREE:
is Gree's basic models, designed for small homes. The piping connection is multi-control, and the external unit is a single fan. It adopts DC inverter control technology and is equipped with Lynda rotor compressor. As an early product of Gree, the performance is now seen as relatively backward, nothing to introduce, not recommended.
2, Yaju:
It is the entry model of Gree central air conditioning, designed for small and medium-sized homes. The piping connection is a divergent pipe. Outside: the whole system single fan; compressor for the Lingda double rotor compressor, performance is average; motor using Gree's Kaibang DC brushless copper wire motor, performance is average; the use of three-row tube condenser, the back of the condenser with a protective net, but the side sheet metal openings smaller, affecting the air volume; condenser fins spray hydrophilic coating, but the workmanship is not good enough; after the update of the cooling reduction for the isometric fins for the air-cooled heat dissipation; fiberglass Fiberglass fan workmanship is rough, and lack of noise reduction design; electronic expansion valve for Dunan, four-way valve for three flowers. Inside the machine: the motor is used on the Ti and Wolong brushless DC motor, buy which depends on the user's luck; the use of V-type heat exchanger, but the size of the smaller, external PTC electric auxiliary heat; condensate lifting pump for the optional.
Summary: Overall, the outer unit is relatively simple, and the inner unit is stacked with general materials, which is not recommended unless you can get a low price.
3, Star:
The current update is Star II, the main model of Gree central air conditioning, designed for large and medium-sized households. The piping connection is divergent pipe. Outer machine: the overall welding process has been significantly improved; 80-112 for a single fan, the outer end suffix is H1, in fact, is the old model; 120 or more for a double fan, the outer end suffix is H2, which is the real meaning of Star II; compressor for the Mitsubishi motors keel motor dual-rotor compressor, the performance is very strong; motor for the Shang Ti DC brushless motor, general performance (there is luck, and may be Kaibang) ; fan for CFD simulation simulation three-dimensional blade, quietness effectively improve; using 2 rows of 60 columns of condenser; it is worth mentioning that the shell sheet metal with anti-salt corrosion effect of spraying, rust; motherboard cooling using refrigerant cooling + air cooling duct cooling + isometric heat sinks, belongs to the ultimate experience. Internal: H series of internal motor for Zhongshan Dayang 3-line DC brushless motor (under all H series); U-type heat exchanger, heat transfer effect; with electric auxiliary heat, heat storage module is optional; optional self-cleaning function (PS: the second generation with the P / H internal, remember not to be fooled into the purchase of a generation of internal P / A, there will be a gap in performance).
Summary: Overall, the welding process is significantly improved, the stack is solid, especially the outer machine, it is worth getting.
4, Zhi Rui:
is the previous flagship product of Gree, designed for large households. The piping connection is a divergent pipe. Outside the machine: the whole system of double fan, 140 start; compressor for the size of the Lingda dual-cylinder dual-rotor compressor, the main cylinder size, called "power save half", which is mainly based on Gree developed variable capacity dual-rotor compressor, when in the 10% load low-frequency state can let one of the cylinder out of the operation, equivalent to the operation of the power halved (Gree's). Power halved (Gree's "variable cylinder" in the development of ideas and Toshiba's "variable cylinder" technology, but due to technical immaturity, the actual performance of the general, it is difficult to achieve the publicity effect), but in fact, a variety of loads under the switch is not so easy, and the switching The process of high energy consumption, in addition to double-cylinder operation, due to the size of the rotor is not symmetrical, not smooth operation, noise; motor to the Kepong DC brushless motor is the main (there is a certain amount of luck); fan for the CFD simulation simulation of three-dimensional blade with glass fiber; shell sheet metal with anti-salt corrosion effect of the spray coating, rust; four-way valves and electronic expansion valves for the Sankohua and Shion; condenser for the two rows. The internal unit is basically the same as the Star II.
Summary: compressor product technology is not mature enough, the price is higher than the Star II, cost-effective than the Star II.
5, Shu Rui:
As a new product launched by Gree, the three-control product, focusing on the temperature and humidity balance, to the Daikin VRV-P to align with the one of the product, the highest-end product of Gree at the moment. It is said to be able to constant temperature dehumidification, temperature and humidity dual control, dehumidification without cooling. The piping connection is a divergent pipe. Outside the machine: the whole system of double fans, starting from 140; compressor for the Lingda's rare-earth reluctance variable speed (sounds awesome?). Actually ......) Double rotor compressor, naming is an art work ah; motor is a DC brushless motor; the use of triple tube condenser, heat transfer efficiency is higher; fan for the bionic blade, can effectively reduce air vibration, reduce noise; more special is the external heat exchanger is a triangular double heat exchanger (normal common is L-type). Internal machine: compatible with two/three-control internal machine, three-control internal machine is divided into ShuXiang, KitchenXiang, BathXiang indoor machine (listen to the name to know their respective uses). The three-control inner machine adopts U-type heat exchanger, which is on par with Daikin; the motor is a DC brushless motor; it has temperature and humidity balance function; IPLV can reach up to 6.4, which is far more than the national first-class energy efficiency.
Summary: As the first domestic three-control products, the courage is commendable, the performance is still not clear (worried about the technology is not mature enough). But the price is not much more expensive than Zhi Rui, so it seems that Zhi Rui's living space has been further compressed...
Third, Hisense:
If the United States is a strong Toshiba wind, Gree is a strong Daikin wind, then Hisense is undoubtedly Hitachi wind. Hisense was founded in 1969, from the late 1960s production of radios Qingdao Radio 2 factory started, military-industrial transformation, through the introduction, digestion, absorption to achieve rapid development, up to now has 29 industrial parks around the world, 20 R & D centers, the products are exported to more than 160 countries and regions. January 2003, Hisense Group and Hitachi air-conditioning*** with the investment in Qingdao to establish Qingdao In January 2003, Hisense Group and Hitachi Air Conditioning*** invested together to establish Qingdao Hisense Hitachi Air Conditioning Systems Co. Hisense home central air conditioning currently has the following series: A+, Glory Home, 5G Glory Home, Ai Home.
Hisense's central air conditioning machine warranty 6 years, store sales can be extended to 10 years. The only 10-year warranty in the central air conditioning brand. After-sales is like this: problems can contact the dealer or call 400 official customer service repair (24-hour duty), customer service will arrange for the local authorized outlets to visit the door to see, the master of the outlets is authorized by Hisense training. Hisense's after-sales response speed is relatively fast, compared to Gree, the United States will be much better.
1, A +:
A + is a new model launched by Hisense in the past two years, mainly to try to knock down the price, mainly for the design of small homes. A + non-national sales, subregional, some areas are not for sale, so the official website does not have the relevant model information. The piping connection method for the divergent pipe. Outer machine architecture set of joint venture brand EXPRO, so the cost down, the whole single fan; compressor for Shanghai Hitachi's dual-rotor compressor; motor is on the Ti's DC brushless motor; in order to compress the cost of parts imported ratio than EXPRO is also a lot less.
Summary: Although the price is not high, do not recommend.
2, glory home:
Why not say that there is a strong shadow of Hisense Hitachi on Hisense, glory home of the external mold and production line is a direct set of Hisense Hitachi VAM mini, designed for large and medium-sized households. The piping connection is a divergent pipe. Outside machine aspect: 140/160 have a single fan, double fan two kinds of 140 single fan, 160 above are double fan; 180 below is the Shanghai Hitachi double rotor compressor, 180 above is the Guangzhou Mitsubishi motors of the double rotor compressor, 380V three-phase electricity is used under the scroll compressor; the motor is the Shibaura / on the Ti's brushless DC motor The electronic expansion valve is Lugong/Shion, the four-way valve is Shion; the main board cooling using refrigerant cooling + air cooling duct cooling; condenser using 2 rows of 60 tubes, the back with a protective net. inner machine aspect: KF is AC motor (noise 22 db), KFD is DC brushless motor (mute performance is good 20 db); and have Hisense publicized nanoe purification technology support, purification effect is obvious. Japan Panasonic technology. A lot of famous cars have nanoe purification support.
Summary: the basic set of external machine joint venture Hitachi technology, material components with Hitachi overlap mostly. Overall stability is very high, the Japanese market for many years to use the rate, but the price is not bad.
3, 5G Glory home:
Glory home of the upgraded version of the hardware and the glory of the home is basically the same, the outside machine model is also the same, the main increase in the built-in waterproof one antenna, the outside machine can be directly connected to the Internet, with its own network; software outside the standard NB-loT communication module, the use of 5G technology + Hisense cloud platform to create the Internet of things. Internet central air conditioning. This product compared to the glory of the home premium is not too high, on the renovation of the unoccupied early purification of formaldehyde in the house, to the home both enjoy a comfortable temperature, you can consider choosing.
4, Ai home:
Hisense's new flagship model, on the basis of the 5G glory home, to further enrich the smart home application scenarios. 140/160 has a single fan, double fan two kinds of fans, 140 below the single fan, more than 160 for the double fan, the largest only to 180. Ai home in the basis of the 5G network Expanded the central air conditioning PLC algorithm of the intelligent module, intelligent appliances, intelligent lighting equipment without separate wiring, power can be accessed through the Hisense Ai enjoy home mobile APP access to the network for control (home appliances need to access the PLC socket , so you need to buy the socket of the cooperative merchants !!!). This leads to its higher installation and design requirements in actual use. The product is considered a domestic central air conditioning attempt to create a whole-house intelligent integrated product. Due to the listing soon, the current user experience information is limited, do not know the use of the effect, do not evaluate.
Fourth, Haier:
Hisense is Hitachi wind, Haier is the proper Mitsubishi Heavy Industries wind. Haier Group was founded in 1984 in Qingdao, China, is the world's leading provider of solutions for better living and digital transformation. Haier has set up a 10+N innovation ecosystem, 71 research institutes, 259 research institutes and design centers, 29 industrial parks, 122 manufacturing centers, 108 marketing centers, and 240,000 sales networks around the world, reaching out to 160 countries and regions, and serving 1 billion+ user families around the globe.In 1993, Haier entered into a joint venture with Mitsubishi Heavy Industries, which specializes in the production of small commercial central air conditioners. In 2016, Haier Central Air Conditioning Connected Factory was officially completed and put into production, which is the first central air conditioning connected factory in the world, and was selected as one of the world's first and the first advanced "lighthouse factory" in China. Haier central air conditioning overall set up including high drop test tower, temperature difference heat pump laboratory, IOT laboratory, including 8 world-class laboratories, with 9 large machine research institute, 4 large basic research institute, IOT wisdom, air, program **** 16 large research institutes, and set up 12 R & D centers in the world. Haier home central air conditioning is currently dominated by the following series: Shijia, Mingjia, Royal.
Haier whole machine warranty 6 years, Haier's after-sales is this: the first year is who installs who is responsible for, for example, dealer installation, the first year by the dealer is responsible for, after that by the Haier's own master is responsible for the master by Haier's local authorized partner outlets to arrange. Haier's after-sales service is also loud and clear in the country, the response speed is fast, and the United States is not the same, 400 official customer service 24 hours on duty.
1, Shijia:
Shijia is designed for small and medium-sized households. Outside machine aspect: the whole series of single fan; compressor for the Mitsubishi Electric's double rotor compressor, with make-up air to increase the cultivation of + two-stage subcooling technology, energy saving effect to improve 8%, 10% increase in operating efficiency; motor is the DC brushless motor of Zhongshan Dayang (also Shibaipu, depending on luck); electronic expansion valve is the Heron Palace / Sanko (depending on luck), four-way valve is Sanko; the use of Haier MXSA inverter for an infinitely DC experience; equipped with Haier's cool heart bridge technology, direct cooling refrigerant cooling, good heat dissipation; condenser is double-row, back with protective net. Inside machine aspect: motor is DC brushless motor; without electric auxiliary heat, optional 3D air outlet; condensate lifting pump is optional; equipped with 3D sterilization cabin technology, Nano net ion sterilization decomposition of PM2.5, with self-cleaning. Overall to see, the hardware pile material is very solid, quite able to play, but the problem is that the software is really pull crotch, electronic control algorithm is too inferior, PLC self-control backward, a little bit of the flavor of the four limbs developed simple mind, although the price is not high, the product is not enough to use.
Summary: not recommended.
2, Mingjia:
In fact, it is the dual-fan version of the world's home, the popular household design, outside and inside the machine materials and the world's home is almost the same, solid pile of material, the same problem in the algorithm, the electronic control algorithms compared to the United States, Gree is indeed behind a lot of people, do not recommend.
3, the Royal family:
Haier's flagship model, upgrade on the basis of Mingjia, the main upgrade points: 1, fins with carbon brazing dimensional resin composite coating of the black gold fins, corrosion resistance to improve; 2, with a 5G (NB-IOT) IOT module, easy to control. But the algorithm is still retarded.