CN202392923U - Air-conditioner and hot-water dual purpose device - Google Patents
Air-conditioner and hot-water dual purpose device Download PDFInfo
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- CN202392923U CN202392923U CN2011205155725U CN201120515572U CN202392923U CN 202392923 U CN202392923 U CN 202392923U CN 2011205155725 U CN2011205155725 U CN 2011205155725U CN 201120515572 U CN201120515572 U CN 201120515572U CN 202392923 U CN202392923 U CN 202392923U
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Abstract
The utility model discloses an air-conditioner and hot-water dual purpose device, which comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger and a hot water heat exchanger. The outlet end of the compressor is connected with a change valve, one outlet of the change valve is connected with a heat exchange coil located in the hot water heat exchanger, the heat exchange coil is connected with a first throttling device, the other end of the first throttling device is connected with a throttling assembly, and two outlets of the throttling assembly are respectively connected with the indoor heat exchanger and the outdoor heat exchanger. The other outlet of the change valve is connected with a second four-way valve, a gas outlet of the second four-way valve is connected with a gas absorption port of the compressor, and the remain two outlets of the second four-way valve are respectively connected with the indoor heat exchanger and the outdoor heat exchanger. The air-conditioner and hot-water dual purpose device has normal refrigeration and heating functions, can independently produce hot water and cold water, and is simple in structure, convenient in installation, high in energy efficiency ratio, saving in energy and low in cost.
Description
Technical field
The utility model relates to a kind of aircondition, the particularly a kind of air conditioner hot water dual-purpose apparatus that not only can do idle call but also can use as water heater.
Background technology
At present, general air-conditioning only possesses summer refrigeration, winter and heats the function of regulating indoor temperature, and in summer, air-conditioning is in the process of refrigeration; Through compressor work, the heat that indoor heat and compressor power consumption are produced all is discharged in the outside atmosphere through air-cooled form, and this does not only carry out the rational and effective utilization to the heat that air-conditioning discharged; And heat directly is discharged in the atmosphere, also can cause certain thermal pollution, simultaneously in season in spring and autumn; Air-conditioning is generally on the shelf, and usage ratio of equipment is low, in addition; General water heater is divided into the combustion-type water heater at present, electrical heating type water heater and solar water heater, but the potential safety hazard that combustion-type exists is big; And the discarded object that burning produces is also big to the pollution of environment, and the electric energy that the electrical heating type water heater consumes is many, though and solar water heater can not produce discarded object and power consumption; But its equipment is huge, and complicacy is installed, and maintenance difficulty is also big; Simultaneously, family also need purchase water heater to satisfy domestic hot-water's needs in addition after having purchased air-conditioning, and cost is high, and equipment takes up space.Problem to above-mentioned appearance; Some air conditioner hot water dual-purpose apparatus have also appearred in the market; But the product structure that generally occurs on the market is complicated; Fault rate is high, and inefficiency adopts the heat pump air-conditioner/water heater of contrary Carnot cycle when moving work summer, to be dispersed into system thermal in the surrounding environment and can not to be used equally at present.
The utility model content
In order to overcome the deficiency of prior art, the utility model provides a kind of and possesses refrigeration, heats, heats when freezing water, heats water and air conditioner hot water dual-purpose apparatus simple in structure, easy for installation, that capacity usage ratio is high separately.
The utility model solves the technical scheme that its technical problem adopted:
A kind of air conditioner hot water dual-purpose apparatus; It comprises compressor, indoor heat exchanger, outdoor heat exchanger and hot water heat exchanger, and the port of export of said compressor is connected with reversal valve, and an outlet of reversal valve is connected with heat exchange coil; Heat exchange coil is arranged in hot water heat exchanger; Said heat exchange coil is connected with the first throttle device, and the other end of first throttle device is connected with orifice union, and two outlets of orifice union are connected with outdoor heat exchanger with indoor heat exchanger respectively; Another outlet of said reversal valve is connected with second cross valve, and the gas outlet of second cross valve is connected on the air entry of compressor, and residue two outlets of second cross valve are connected with outdoor heat exchanger with indoor heat exchanger respectively.
Preferably, said reversal valve is a cross valve, a gas outlet sealing of this cross valve, and perhaps, said reversal valve is for also being triple valve.
Further, said first throttle device can be capillary, heating power expansion valve or electric expansion valve.
Preferably; Said orifice union comprises first check valve, second check valve and second throttling arrangement; The parallelly connected first throttle device that leads to of the inlet of first check valve with the inlet of second check valve; The parallelly connected outdoor heat exchanger that leads to of second check valve outlet with second throttling arrangement, the parallelly connected indoor heat exchanger that leads to of first check valve outlet with second throttling arrangement, orifice union is between first throttle device and outdoor heat exchanger.
Further; Said orifice union comprises first check valve, second check valve and second throttling arrangement; The parallelly connected first throttle device that leads to of the inlet of first check valve with the inlet of second check valve; The parallelly connected indoor heat exchanger that leads to of second check valve outlet with second throttling arrangement, the parallelly connected outdoor heat exchanger that leads to of first check valve outlet with second throttling arrangement, orifice union is between first throttle device and indoor heat exchanger.
Further, said second throttling arrangement is capillary or heating power expansion valve.
Further, said orifice union is between first throttle device and outdoor heat exchanger, and orifice union is an electric expansion valve.
Further, said orifice union is between first throttle assembly and indoor heat exchanger, and orifice union is an electric expansion valve.
Preferably, between said outdoor heat exchanger and the orifice union reservoir is installed.
The beneficial effect of the utility model is: the utility model through reversal valve and orifice union etc. with hot water heat exchanger instant heating hydrophone with the air-conditioning composition air conditioner hot water dual-purpose apparatus that links together, this device has normal refrigeration, heat-production functions, also has the function that heats water when heating water with refrigeration separately; The heat of having discharged when effectively having utilized air conditioner refrigerating; With the air-cooled water-cooled that changed into of air-conditioning, improved the cooling effect of air-conditioning, in addition simultaneously; Changed the mode that heats of hot water; It is big to have solved the combustion-type potential safety hazard, seriously polluted, the problem that power consumption is big and the solar energy type installation is complicated, maintenance difficulties is big during electrical heating; Need not simultaneously to purchase water heater in addition, practiced thrift life cost.The utility model is simple in structure, and is easy for installation, and Energy Efficiency Ratio is high, energy savings, uses economy, and cost is low.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the first syndeton sketch map of the utility model;
Fig. 2 is the second syndeton sketch map of the utility model;
Fig. 3 is the 3rd syndeton sketch map of the utility model;
Fig. 4 is the 4th syndeton sketch map of the utility model.
The specific embodiment
With reference to Fig. 1 ~ Fig. 4; A kind of air conditioner hot water dual-purpose apparatus of the utility model, it comprises compressor 1, indoor heat exchanger 2, outdoor heat exchanger 3 and hot water heat exchanger 4, the port of export of said compressor 1 is connected with reversal valve 5; An outlet of reversal valve 5 is connected with heat exchange coil 6; Heat exchange coil 6 is arranged in hot water heat exchanger 4, and heat exchange coil 6 is used to accelerate the exchange of heat, and said heat exchange coil 6 is connected with first throttle device 7; The other end of first throttle device 7 is connected with orifice union 8, and two outlets of orifice union 8 are connected with outdoor heat exchanger 3 with indoor heat exchanger 2 respectively; The gas outlet that another outlet of said reversal valve 5 is connected with second cross valve, 9, the second cross valves 9 is connected on the air entry of compressor 1, and residue two outlets of second cross valve 9 are connected with outdoor heat exchanger 3 with indoor heat exchanger 2 respectively.
Preferably, said reversal valve 5 can be selected cross valve for use, then this cross valve gas outlet sealing, and certainly, reversal valve 5 also can be selected triple valve for use, and this moment, three interfaces of triple valve were connected with compressor 1, heat exchange coil 6 and second cross valve 9 respectively.
Further, said first throttle device 7 can be capillary, heating power expansion valve or electric expansion valve, to this position using which kind of throttling arrangement to have no special requirements and limit.
Preferably; Said orifice union 8 comprises first check valve 81, second check valve 82 and second throttling arrangement 83; The parallelly connected first throttle device 7 that leads to of the inlet of first check valve 81 with the inlet of second check valve 82; 82 outlets of second check valve export and second throttling arrangement, the 83 parallelly connected indoor heat exchangers 2 that lead to second throttling arrangement, 83 parallelly connected outdoor heat exchanger 3, the first check valves 81 that lead to, and orifice union 8 is between first throttle device 7 and outdoor heat exchanger 3; Certainly; Orifice union 8 also can be between first throttle device 7 and indoor heat exchanger 2; At this moment; 82 outlets of second check valve export and second throttling arrangement, the 83 parallelly connected outdoor heat exchangers 3 that lead to second throttling arrangement, 83 parallelly connected indoor heat exchanger 2, the first check valves 81 that lead to, and orifice union 8 is between first throttle device 7 and indoor heat exchanger 2.To the above-mentioned two kinds of orifice unions 8 that contain check valve; Second throttling arrangement 83 is selected capillary, heating power expansion valve for use or by two capillaries and the composite set that check valve is formed; Throttling such as capillary, heating power expansion valve device is with respect to electric expansion valve; Because the restriction of capillary or heating power expansion valve adjustable range, all just need shield with check valve, otherwise; Orifice union 8 is heating, when each pattern such as refrigeration is changed, problems such as the not good or whole air conditioner hot water dual-purpose apparatus operation of some mode effects is undesired will occur.When second throttling arrangement 83 is selected electric expansion valve for use; Because of electric expansion valve itself has the control system; Adjustable range is wide; Just need not to use check valve, do not influence refrigeration that the said air conditioner hot water dual-purpose apparatus of the utility model has this moment fully, heat the function of water when heating, heating water and refrigeration.In addition, electric expansion valve is with respect to capillary and heating power expansion valve, and the electric expansion valve scope of application is wider; Regulate rapider; Controlled quentity controlled variable is more accurate, and when the air-conditioning frequency departure behind the design point, the performance of electronic expansion valve system is can be good than capillary system and thermal expansion valve system.
Preferably; Reservoir 10 reservoirs 10 are installed between said outdoor heat exchanger 3 and the orifice union 8 are used for storing the recovery cold-producing medium; To the impact of compressor 1 valve block, prolong the service life of compressor when alleviating refrigerant-recovery, also promptly prolong the service life of the utility model.
The operation principle of the utility model is such:
A. air conditioner refrigerating circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive through second cross valve 9 again that outdoor heat exchangers 3 dispel the heat, condensation; Carry out throttling through capillary or heating power expansion valve 83 after the condensation; After the throttling in the inlet chamber heat exchanger 2 absorb external heats gasify, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, thereby form kind of refrigeration cycle.
B. air-conditioning heats circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive indoor heat exchanger 2 through second cross valve 9 again and carry out heat release, condensation; Carry out throttling through capillary or heating power expansion valve 83 after the condensation; After the throttling inlet chamber external heat exchanger 3 absorb external heats evaporate, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, heat circulation thereby form.
C. heat the water circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling through second check valve, 82 inlet chamber external heat exchangers 3 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, heat the water circulation separately thereby form.
D. air conditioner refrigerating+hot water circuit
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to check valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling through first check valve 81 get into indoor heat exchangers 2 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, thereby form air conditioner refrigerating+hot water circuit.
, when orifice union 8 by first check valve 81, second check valve 82 and capillary or heating power expansion valve 83 constitutes and between first throttle device 7 and indoor heat exchanger 2 time, the operation principle of the utility model is following:
A. air conditioner refrigerating circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive through second cross valve 9 again that outdoor heat exchangers 3 dispel the heat, condensation; Carry out throttling through capillary or heating power expansion valve 83 after the condensation; After the throttling in the inlet chamber heat exchanger 2 absorb external heats gasify, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, thereby form kind of refrigeration cycle.
B. air-conditioning heats circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive indoor heat exchanger 2 through second cross valve 9 again and carry out heat release, condensation; Carry out throttling through capillary or heating power expansion valve 83 after the condensation; After the throttling inlet chamber external heat exchanger 3 absorb external heats evaporate, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, heat circulation thereby form.
C. heat the water circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling through first check valve, 81 inlet chamber external heat exchangers 3 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, heat the water circulation separately thereby form.
D. air conditioner refrigerating+hot water circuit
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to check valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling through second check valve 82 get into indoor heat exchangers 2 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, thereby form air conditioner refrigerating+hot water circuit.
A. air conditioner refrigerating circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive through second cross valve 9 again that outdoor heat exchangers 3 dispel the heat, condensation; Carry out throttling through electric expansion valve 8 after the condensation; After the throttling in the inlet chamber heat exchanger 2 absorb external heats gasify, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, thereby form kind of refrigeration cycle.
B. air-conditioning heats circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive indoor heat exchanger 2 through second cross valve 9 again and carry out heat release, condensation; Carry out throttling through electric expansion valve 8 after the condensation; After the throttling inlet chamber external heat exchanger 3 absorb external heats evaporate, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, heat circulation thereby form.
C. heat the water circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling through electric expansion valve 8 inlet chamber external heat exchangers 3 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, heat the water circulation separately thereby form.
D. air conditioner refrigerating+hot water circuit
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to check valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling in the inlet chamber heat exchanger 2 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, thereby form air conditioner refrigerating+hot water circuit.
A. air conditioner refrigerating circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive through second cross valve 9 again that outdoor heat exchangers 3 dispel the heat, condensation; Carry out throttling through electric expansion valve 8 after the condensation; After the throttling in the inlet chamber heat exchanger 2 absorb external heats gasify, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, thereby form kind of refrigeration cycle.
B. air-conditioning heats circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to check valve 5; Arrive indoor heat exchanger 2 through second cross valve 9 again and carry out heat release, condensation; Carry out throttling through electric expansion valve 8 after the condensation; After the throttling inlet chamber external heat exchanger 3 absorb external heats evaporate, overheated; Lead to the compressor air suction mouth again through second cross valve 9 after overheated, heat circulation thereby form.
C. heat the water circulation separately
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to reversal valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling inlet chamber external heat exchanger 3 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, heat the water circulation separately thereby form.
D. air conditioner refrigerating+hot water circuit
By the control of control system, cold-producing medium is discharged by compressor 1 and is led to check valve 5; Arrive heat exchange coil 6 hot water heat exchangers 4 and carry out heat release, condensation; Carry out throttling through first throttle device 7 after the condensation; After the throttling through electric expansion valve 8 get into indoor heat exchangers 2 absorb external heats evaporate, overheated; Lead to compressor 1 air entry again through second cross valve 9 after overheated, thereby form air conditioner refrigerating+hot water circuit.
The utility model through reversal valve and orifice union etc. with hot water heat exchanger instant heating hydrophone with the air-conditioning composition air conditioner hot water dual-purpose apparatus that links together, this device has normal refrigeration, heat-production functions, also has the function that heats water when heating water with refrigeration separately; The heat of having discharged when effectively having utilized air conditioner refrigerating simultaneously with the air-cooled water-cooled that changed into of air-conditioning, has improved the cooling effect of air-conditioning; In addition, changed the mode that heats of hot water, it is big to have solved the combustion-type potential safety hazard; Seriously polluted; The problem that power consumption is big and the solar energy type installation is complicated, maintenance difficulties is big during electrical heating need not to purchase water heater in addition simultaneously, has practiced thrift life cost.The utility model is simple in structure, and is easy for installation, and Energy Efficiency Ratio is high, energy savings, uses economy, and cost is low.
The above, the just preferred embodiment of the utility model, the utility model is not limited to above-mentioned embodiment, as long as it reaches the technique effect of the utility model with same or analogous means, all should belong to the protection domain of the utility model.
Claims (9)
1. air conditioner hot water dual-purpose apparatus; Comprise compressor (1), indoor heat exchanger (2), outdoor heat exchanger (3) and hot water heat exchanger (4); It is characterized in that: the port of export of said compressor (1) is connected with reversal valve (5); An outlet of reversal valve (5) is connected with heat exchange coil (6), and heat exchange coil (6) is arranged in hot water heat exchanger (4), and said heat exchange coil (6) is connected with first throttle device (7); The other end of first throttle device (7) is connected with orifice union (8), and the same respectively indoor heat exchangers of two outlets (2) of orifice union (8) are connected with outdoor heat exchanger (3); Another outlet of said reversal valve (5) is connected with second cross valve (9); The gas outlet of second cross valve (9) is connected on the air entry of compressor (1), and the residue two same respectively indoor heat exchangers of outlet (2) of second cross valve (9) are connected with outdoor heat exchanger (3).
2. a kind of air conditioner hot water dual-purpose apparatus according to claim 1 is characterized in that: said reversal valve (5) is a cross valve, a gas outlet sealing of this cross valve, and perhaps, said reversal valve (5) is for also being triple valve.
3. a kind of air conditioner hot water dual-purpose apparatus according to claim 1 is characterized in that: said first throttle device (7) can be capillary, heating power expansion valve or electric expansion valve.
4. a kind of air conditioner hot water dual-purpose apparatus according to claim 1; It is characterized in that: said orifice union (8) comprises first check valve (81), second check valve (82) and second throttling arrangement (83); The parallelly connected first throttle device (7) that leads to of the inlet of first check valve (81) with the inlet of second check valve (82); The parallelly connected outdoor heat exchanger (3) that leads to of second check valve (82) outlet with second throttling arrangement (83); The parallelly connected indoor heat exchanger (2) that leads to second throttling arrangement (83) of first check valve (81) outlet, orifice union (8) is positioned between first throttle device (7) and the outdoor heat exchanger (3).
5. a kind of air conditioner hot water dual-purpose apparatus according to claim 1; It is characterized in that: said orifice union (8) comprises first check valve (81), second check valve (82) and second throttling arrangement (83); The parallelly connected first throttle device (7) that leads to of the inlet of first check valve (81) with the inlet of second check valve (82); The parallelly connected indoor heat exchanger (2) that leads to of second check valve (82) outlet with second throttling arrangement (83); The parallelly connected outdoor heat exchanger (3) that leads to second throttling arrangement (83) of first check valve (81) outlet, orifice union (8) is positioned between first throttle device (7) and the indoor heat exchanger (2).
6. according to claim 4 or 5 described a kind of air conditioner hot water dual-purpose apparatus, it is characterized in that: said second throttling arrangement (83) is capillary or heating power expansion valve.
7. a kind of air conditioner hot water dual-purpose apparatus according to claim 1 is characterized in that: said orifice union (8) is positioned between first throttle device (7) and the outdoor heat exchanger (3), and orifice union (8) is an electric expansion valve.
8. a kind of air conditioner hot water dual-purpose apparatus according to claim 1 is characterized in that: said orifice union (8) is positioned between first throttle assembly (7) and the indoor heat exchanger (2), and orifice union (8) is an electric expansion valve.
9. according to each described a kind of air conditioner hot water dual-purpose apparatus in claim 1 ~ 5 or 7 ~ 8, it is characterized in that: between said outdoor heat exchanger (3) and the orifice union (8) reservoir (10) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205155725U CN202392923U (en) | 2011-12-12 | 2011-12-12 | Air-conditioner and hot-water dual purpose device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205155725U CN202392923U (en) | 2011-12-12 | 2011-12-12 | Air-conditioner and hot-water dual purpose device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202392923U true CN202392923U (en) | 2012-08-22 |
Family
ID=46667845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205155725U Expired - Lifetime CN202392923U (en) | 2011-12-12 | 2011-12-12 | Air-conditioner and hot-water dual purpose device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202392923U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697568A (en) * | 2014-01-09 | 2014-04-02 | 烟台荏原空调设备有限公司 | Air conditioning control method and device and air conditioning unit with same |
| CN112628848A (en) * | 2020-12-18 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| WO2021223612A1 (en) * | 2020-06-19 | 2021-11-11 | 青岛海尔空调电子有限公司 | Vrf air-conditioning system and control method therefor, and control device |
-
2011
- 2011-12-12 CN CN2011205155725U patent/CN202392923U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697568A (en) * | 2014-01-09 | 2014-04-02 | 烟台荏原空调设备有限公司 | Air conditioning control method and device and air conditioning unit with same |
| WO2021223612A1 (en) * | 2020-06-19 | 2021-11-11 | 青岛海尔空调电子有限公司 | Vrf air-conditioning system and control method therefor, and control device |
| CN112628848A (en) * | 2020-12-18 | 2021-04-09 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |
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| CX01 | Expiry of patent term |