CN102734885A - Serial air conditioner and temperature regulating box all-in-one machine and operation control method thereof - Google Patents
Serial air conditioner and temperature regulating box all-in-one machine and operation control method thereof Download PDFInfo
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- CN102734885A CN102734885A CN201210223337XA CN201210223337A CN102734885A CN 102734885 A CN102734885 A CN 102734885A CN 201210223337X A CN201210223337X A CN 201210223337XA CN 201210223337 A CN201210223337 A CN 201210223337A CN 102734885 A CN102734885 A CN 102734885A
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Abstract
The invention discloses an air conditioner and temperature regulating box all-in-one machine, which comprises a compressor, an outdoor heat exchanger and a throttle mechanism which are sequentially connected through a main pipeline. The output end of the compressor is connected with the input end of the outdoor heat exchanger. The output end of the outdoor heat exchanger is connected with the input end of the throttle mechanism. The all-in-one machine additionally comprises an indoor temperature regulating box heat exchanger and an indoor air conditioner heat exchanger. The input end of the indoor temperature regulating box heat exchanger is connected with the output end of the throttle mechanism. The output end of the indoor temperature regulating box heat exchanger is connected with the input end of the indoor air conditioner heat exchanger. The output end of the indoor air conditioner heat exchanger is connected with the input end of the compressor. Since the indoor air conditioner heat exchanger and the indoor temperature regulating box heat exchanger of the all-in-one machine are connected in series, the problem of backflow caused by unbalanced pressure is solved.
Description
Technical field
The present invention relates to air-conditioning and controlled temperature cabinet all-in-one technical field, particularly a kind of tandem air-conditioning and controlled temperature cabinet all-in-one and progress control method thereof.
Background technology
Existing air-conditioning and controlled temperature cabinet all-in-one have following two kinds of production methods:
One, air-conditioning and controlled temperature cabinet respectively have and overlap independently all-in-one; Both are made of one from certain purpose in manufacture process, and the simple stack of two all-in-ones has not only increased bulk without reason, and does not have novelty in technical field, repeats no more at this.
Two, the shared cover all-in-one of air-conditioning and controlled temperature cabinet, the room conditioning heat exchanger is that parallel way is connected with indoor temperature control case heat exchanger.In this kind mode, because two heat exchangers are parallel connection.Yet the required temperature range of room conditioning heat exchanger and indoor temperature control case heat exchanger is different; Promptly the outlet pressure of the refrigerant in two heat exchangers is different.If establishing two heat exchanger entrance point refrigerant pressure is P, in order to realize the temperature effect of air-conditioning and controlled temperature cabinet, refrigerant pressure is P1 behind the then shunting process room conditioning heat exchanger, is P2 through refrigerant pressure behind the indoor temperature control case heat exchanger, and P1 P2, and difference is bigger.After through two heat exchangers, when compiling one the tunnel, refrigerant can cause room conditioning heat exchanger branch road refrigerant to reflux so to indoor temperature control case heat exchanger branch road; Can have a strong impact on the performance of room conditioning and indoor temperature control case like this.To this situation, existing settling mode is to increase a booster pump in the evaporator of refrigerator outlet; Weak point is that not only cost height but also efficient are also very low.
On the other hand; The room conditioning heat exchanger adopts the fan forced convection heat exchange; And indoor temperature control case heat exchanger relies on radiation heat transfer, and after identical condition for import shunting, the evaporating temperature of room conditioning heat exchanger is higher than refrigerator heat exchanger; The refrigerant major part flows to the lower indoor temperature control case heat exchanger of pressure, causes the air-conditioning ability significantly to reduce.To this situation, existing settling mode is to increase throttling arrangement at the refrigerator inlet, and weak point is to exist the refrigerant of indoor temperature control case heat exchanger and can produce backflow phenomenon from the outlet outflow, thereby influences all-in-one efficient.
Summary of the invention
Goal of the invention of the present invention is the technical deficiency to existing air-conditioning and controlled temperature cabinet all-in-one, provides a kind of anti-backflow to improve the tandem air-conditioning and the controlled temperature cabinet all-in-one of all-in-one performance.
The progress control method of a kind of tandem air-conditioning and controlled temperature cabinet all-in-one is provided further.
For realizing the foregoing invention purpose, the technical scheme that the present invention adopts is:
A kind of tandem air-conditioning and controlled temperature cabinet all-in-one are provided; Comprise the medium circulation pipeline system that compressor, room conditioning heat exchanger, indoor temperature control case heat exchanger, throttle mechanism and outdoor heat exchanger form, said indoor temperature control case heat exchanger and room conditioning heat exchanger are connected in series in proper order or said room conditioning heat exchanger and indoor temperature control case heat exchanger are connected in series in proper order.
Preferably, described compressor is imported and exported and is connected cross valve respectively, forms refrigeration heat pump system.
Preferably, described compressor is a frequency-changeable compressor, and the throttle mechanism of employing is an electric expansion valve.
Preferably, said medium circulation pipeline is provided with first control valve, and this first control valve is used to control the break-make that refrigerant flows in the controlled temperature cabinet heat exchanger; Be provided with first bypass line between said throttle mechanism and the room conditioning heat exchanger, this bypass line is provided with first by-passing valve.
Preferably, said medium circulation pipeline is provided with second control valve, and this second control valve is used to control the break-make that refrigerant flows in the room conditioning heat exchanger; Be provided with second bypass line between said indoor temperature control case heat exchanger and the compressor inlet, this bypass line is provided with second by-passing valve.
Preferably, said medium circulation pipeline is provided with first control valve, and this first control valve is used to control the break-make that refrigerant flows in the room conditioning heat exchanger; Be provided with first bypass line between said throttle mechanism and the indoor temperature control case heat exchanger, this bypass line is provided with first by-passing valve.
Preferably, said medium circulation pipeline is provided with second control valve, and this second control valve is used to control the break-make that refrigerant flows in the controlled temperature cabinet heat exchanger; Be provided with second bypass line between said room conditioning heat exchanger and the compressor inlet, this bypass line is provided with second by-passing valve.
The progress control method of a kind of tandem air-conditioning and controlled temperature cabinet all-in-one, when described room conditioning heat exchanger or the operation of indoor temperature control case heat exchanger, first by-passing valve and second by-passing valve are closed, and first control valve and second control valve are opened; The room conditioning heat exchanger provides heat or cold to room air, and simultaneously, indoor temperature control case heat exchanger is corresponding provides heat or cold.
Preferably; When described room conditioning heat exchanger or the operation of indoor temperature control case heat exchanger, second by-passing valve and first control valve are closed, and second control valve and first by-passing valve are opened; The room conditioning heat exchanger provides heat or cold to room air; The indoor temperature control case is not worked, and under the same external condition, and the flow of compressor frequency and electric expansion valve is greater than or equals the value that air-conditioning and controlled temperature cabinet are worked simultaneously.
Preferably; When described room conditioning heat exchanger or the operation of indoor temperature control case heat exchanger, second by-passing valve and first control valve are opened, and second control valve and first by-passing valve are closed; Indoor temperature control case heat exchanger provides heat or cold to the controlled temperature cabinet space; Air-conditioning is not worked, and under the same external condition, and the flow of compressor frequency and electric expansion valve is less than or equals the value that room conditioning and controlled temperature cabinet are worked simultaneously.
The present invention has following beneficial effect with respect to prior art:
The room conditioning heat exchanger of air-conditioning of the present invention and controlled temperature cabinet all-in-one and indoor temperature control case heat exchanger adopt series design, have solved the reflux problem that pressure imbalance causes.Simultaneously, this all-in-one has also designed controllable bypass circulation respectively, has so both realized independent respectively control air-conditioning and controlled temperature cabinet, makes the demand of air-conditioning and controlled temperature cabinet one be achieved again, saves space and resource, is user-friendly to again.
Description of drawings
Fig. 1 is the system diagram of the embodiment of the invention 1;
Fig. 2 is the system diagram of the embodiment of the invention 2;
Fig. 3 is the system diagram that the embodiment of the invention 3 air-conditionings and controlled temperature cabinet move simultaneously;
Fig. 4 is the system diagram that the embodiment of the invention 3 is used air-conditioning separately;
Fig. 5 is the system diagram that the embodiment of the invention 4 air-conditionings and controlled temperature cabinet move simultaneously;
Fig. 6 is the system diagram that the embodiment of the invention 4 is used air-conditioning separately;
Fig. 7 is the system diagram that the embodiment of the invention 4 is used controlled temperature cabinet separately.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment goal of the invention of the present invention is done to describe in further detail, embodiment can not give unnecessary details at this one by one, but therefore embodiment of the present invention is not defined in following examples.Unless stated otherwise, the material and the processing method of the present invention's employing are present technique field conventional material and processing method.
Embodiment 1
Shown in accompanying drawing 1; Said tandem air-conditioning and controlled temperature cabinet integrated machine system; Comprise the medium circulation pipeline system that compressor 1, room conditioning heat exchanger 5, indoor temperature control case heat exchanger 4, throttle mechanism 3 and outdoor heat exchanger 2 are formed, and indoor temperature control case heat exchanger 4 is connected in series with room conditioning heat exchanger 5 orders.Be refrigerant inlet chamber external heat exchanger 2 and outdoor environment heat exchange after compressor 1 compression; Controlled temperature cabinet heat exchanger 4 in the inlet chamber with the heat exchange of controlled temperature cabinet space, reaches controlled temperature cabinet cooling purpose after high-pressure liquid refrigerant process throttle mechanism 3 throttlings after the heat exchange; And then air-condition heat exchanger 5 and indoor environment heat exchange in the inlet chamber; Reach the effect that regulates the room temperature, the refrigerant of last low pressure gaseous state is got back to compressor 1 air inlet, so circular flow.Can realize controlled temperature cabinet cold storage function and air conditioner refrigerating function, in this system, indoor temperature control case heat exchanger 4 is connected with room conditioning heat exchanger 5, does not have the phenomenon that refrigerant refluxes under the parallelly connected state.Simultaneously, the use of controlled temperature cabinet is also very little to the influential effect of air-conditioning.
Shown in accompanying drawing 2, room conditioning heat exchanger 5, indoor temperature control case heat exchanger 4 place-exchange have been with the difference of embodiment one.Be refrigerant inlet chamber external heat exchanger 2 and outdoor environment heat exchange after compressor 1 compression; Air-condition heat exchanger 5 and indoor environment heat exchange in the inlet chamber reaches the effect that regulates the room temperature after high-pressure liquid refrigerant process throttle mechanism 3 throttlings after the heat exchange, and then controlled temperature cabinet heat exchanger 4 in the inlet chamber; With the heat exchange of controlled temperature cabinet space; Reach controlled temperature cabinet cooling purpose, the refrigerant of last low pressure gaseous state is got back to compressor 1 air inlet, so circular flow.
Shown in accompanying drawing 3, described compressor is imported and exported and is connected cross valve 11 respectively, forms refrigeration heat pump system, can realize the difference in functionality of air-conditioning and controlled temperature cabinet according to user's request.Solid arrow is depicted as air conditioner refrigerating, the circulation of controlled temperature cabinet refrigeration, and dotted arrow is depicted as air-conditioning and heats, the circulation of controlled temperature cabinet heating.Electric expansion valve 3 outlet positions are provided with first control valve 7 to the pipeline at the position between room conditioning heat exchanger 5 and the indoor temperature control case heat exchanger 4, and this control valve is provided with the front with indoor temperature control case heat exchanger 4; Electric expansion valve 3 outlet positions are provided with a bypass pipe road to the position between room conditioning heat exchanger 5 and the indoor temperature control case heat exchanger 4, and this bypass line is provided with first by-passing valve 9.Move this system and can realize air-conditioning and controlled temperature cabinet operation function simultaneously; Shown in accompanying drawing 3; This moment first, control valve 7 was opened, and first by-passing valve 9 cuts out, system's refrigerant circulation; Heat exchange realizes the cold and hot function of controlled temperature cabinet in indoor temperature control case heat exchanger 4, and indoor environment temperature is regulated in heat exchange in room conditioning heat exchanger 5; Move this system and can realize that also the air-conditioning list opens function, shown in accompanying drawing 4, this moment first, by-passing valve 9 was opened; First control valve 7 is closed; System's refrigerant controlled temperature cabinet heat exchanger 4 that do not circulate, and through first by-passing valve 9 and 5 circulations of room conditioning heat exchanger, room conditioning heat exchanger 5 and indoor environment heat exchange realize that air-conditioning regulates the function of indoor environment temperature; Refrigeration flows to like the solid line arrow, heats like dotted arrow to flow to.And on controlled temperature cabinet inner space, indoor temperature control case heat exchanger 4, indoor environment, room conditioning evaporimeter 5, be provided with bulb, can detect the running status that real time temperature comes automatic regulating system automatically.
Present embodiment is except that following characteristics; Other are all identical with embodiment 3: shown in accompanying drawing 5; Position between room conditioning heat exchanger 5 and the indoor temperature control case heat exchanger 4 is provided with second control valve 8 to the pipeline at compressor 1 inlet position, and this control valve is provided with the front with room conditioning heat exchanger 5; Position between room conditioning heat exchanger 5 and the indoor temperature control case heat exchanger 4 is provided with a bypass pipe road to the pipeline at compressor 1 inlet position, and this bypass line is provided with second by-passing valve 10.This kind system can realize controlled temperature cabinet and air-conditioning operation function simultaneously, and shown in accompanying drawing 5, this moment, first control valve 7 and second control valve 8 were opened, and first by-passing valve 9 and second by-passing valve 10 are closed; Can realize that also the air-conditioning list opens function, shown in accompanying drawing 6, this moment, first control valve 7 was closed with second by-passing valve 10, second control valve 8 and 9 unlatchings of first by-passing valve; Can realize that also the temperature adjustment packing list opens function, shown in accompanying drawing 7, this moment first control valve 7 with 10 unlatchings of second by-passing valve, second control valve 8 and first by-passing valve 9 are closed.Solid arrow is depicted as air conditioner refrigerating/controlled temperature cabinet cold storage function, and dotted arrow is depicted as air-conditioning and heats/the controlled temperature cabinet heating function.
Compressor is preferably frequency-changeable compressor, and the throttle mechanism of employing is an electric expansion valve.Compressor selects for use frequency-changeable compressor and throttle mechanism to select electric expansion valve for use, can real-time and effective regulate compressor frequency and system's refrigerant circular flow.The concrete method of operation such as following.
The method of operation one; Air-conditioning and controlled temperature cabinet are opened simultaneously, and shown in accompanying drawing 5, first by-passing valve 9 and second by-passing valve 10 are closed; First control valve 7 and second control valve 8 are opened; Room conditioning heat exchanger 5 provides heat or cold to room air, and simultaneously, indoor temperature control case heat exchanger 4 is corresponding provides heat or cold.The frequency P1 of compressor 1 is between 5HZ-150HZ in this implementation procedure; The flow I1 of electric expansion valve 3 is between 0-100%; Because when indoor temperature control case and air-conditioning are opened refrigeration/refrigeration simultaneously; The room conditioning heat exchanger needs big flow to reduce indoor environment temperature, and controlled temperature cabinet need reduce the controlled temperature cabinet internal temperature than the low discharge lower temperature.This moment, system can take into account the cold medium flux of air-conditioning and controlled temperature cabinet simultaneously, and effectively regulating system is in a comparatively desirable state.Solid arrow is depicted as air conditioner refrigerating, controlled temperature cabinet cold storage function, and dotted arrow is depicted as that air-conditioning heats, the controlled temperature cabinet heating function.
The method of operation two is singly turned on the aircondition, shown in accompanying drawing 6; When air-conditioning and the operation of controlled temperature cabinet all-in-one, second by-passing valve 10 and first control valve 7 are closed, and second control valve 8 and first by-passing valve 9 are opened; Room conditioning heat exchanger 5 provides heat or cold to room air; The controlled temperature cabinet function is not opened, and system can be devoted to regulate room temperature fully, needn't take the interval controlled temperature cabinet function of different temperatures into account.Under identical external condition, the flow of the frequency of compressor 1 and electric expansion valve 3 is greater than or the value when equaling air-conditioning and controlled temperature cabinet and working simultaneously.The compressor frequency P2 of this moment between 10HZ-150HZ, expansion valve opening I2 is at 10%-100%, P2 >=P1, I2 >=I1.This moment, the air-conditioning efficiency was high, indoor environment temperature is regulated fast because singly turn on the aircondition.Solid arrow is depicted as the air conditioner refrigerating function among the figure, and dotted arrow is depicted as the air-conditioning heat-production functions.
The method of operation three is singly opened the controlled temperature cabinet function, shown in accompanying drawing 7; When described air-conditioner moves; Second by-passing valve 10 and first control valve 7 are opened, and second control valve 8 and first by-passing valve 9 are closed, and indoor temperature control case heat exchanger 4 provides heat or cold to the controlled temperature cabinet space.The controlled temperature cabinet function is opened in this circulatory system, and air conditioning function is closed, and system can be devoted to regulate the controlled temperature cabinet temperature fully, needn't take the interval air conditioning function of different temperatures into account.The required temperature of controlled temperature cabinet is lower; So the required flow of refrigerant is also less in the system, the flow of electric expansion valve 3 is less than or the value when equaling air-conditioning and controlled temperature cabinet and working simultaneously, considers the defencive function after controlled temperature cabinet operate power and flow reduce simultaneously; The frequency of compressor 1 is less than or the value when equaling air-conditioning and controlled temperature cabinet and working simultaneously; The compressor frequency P3 of this moment between 5HZ-60HZ, expansion valve opening I3 is in 0-50%, and P3≤P1≤P2, I3≤I1≤I2.Solid arrow is depicted as controlled temperature cabinet case cold storage function, and dotted arrow is depicted as the controlled temperature cabinet heating function.
The foregoing description is merely preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention.Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.
Claims (10)
1. tandem air-conditioning and controlled temperature cabinet all-in-one; Comprise the medium circulation pipeline system that compressor, room conditioning heat exchanger, indoor temperature control case heat exchanger, throttle mechanism and outdoor heat exchanger form, it is characterized in that: said indoor temperature control case heat exchanger and room conditioning heat exchanger are connected in series in proper order or said room conditioning heat exchanger and indoor temperature control case heat exchanger are connected in series in proper order.
2. tandem air-conditioning according to claim 1 and controlled temperature cabinet all-in-one is characterized in that: described compressor is imported and exported and is connected cross valve respectively, forms refrigeration heat pump system.
3. tandem air-conditioning according to claim 1 and controlled temperature cabinet all-in-one is characterized in that: described compressor is a frequency-changeable compressor, and the throttle mechanism of employing is an electric expansion valve.
4. according to claim 1 or 2 or 3 described tandem air-conditioning and controlled temperature cabinet all-in-ones, it is characterized in that: said medium circulation pipeline is provided with first control valve, and this first control valve is used to control the break-make that refrigerant flows in the controlled temperature cabinet heat exchanger; Be provided with first bypass line between said throttle mechanism and the room conditioning heat exchanger, this bypass line is provided with first by-passing valve.
5. tandem air-conditioning according to claim 4 and controlled temperature cabinet all-in-one is characterized in that: said medium circulation pipeline is provided with second control valve, and this second control valve is used to control the break-make that refrigerant flows in the room conditioning heat exchanger; Be provided with second bypass line between said indoor temperature control case heat exchanger and the compressor inlet, this bypass line is provided with second by-passing valve.
6. according to claim 1 or 2 or 3 described tandem air-conditioning and controlled temperature cabinet all-in-ones, it is characterized in that: said medium circulation pipeline is provided with first control valve, and this first control valve is used to control the break-make that refrigerant flows in the room conditioning heat exchanger; Be provided with first bypass line between said throttle mechanism and the indoor temperature control case heat exchanger, this bypass line is provided with first by-passing valve.
7. tandem air-conditioning according to claim 6 and controlled temperature cabinet all-in-one is characterized in that: said medium circulation pipeline is provided with second control valve, and this second control valve is used to control the break-make that refrigerant flows in the controlled temperature cabinet heat exchanger; Be provided with second bypass line between said room conditioning heat exchanger and the compressor inlet, this bypass line is provided with second by-passing valve.
8. the progress control method of tandem air-conditioning and controlled temperature cabinet all-in-one, it is characterized in that: when described room conditioning heat exchanger or the operation of indoor temperature control case heat exchanger, first by-passing valve and second by-passing valve are closed, first control valve and the unlatching of second control valve; The room conditioning heat exchanger provides heat or cold to room air, and simultaneously, indoor temperature control case heat exchanger is corresponding provides heat or cold.
9. the progress control method of tandem air-conditioning according to claim 8 and controlled temperature cabinet all-in-one; It is characterized in that: when described room conditioning heat exchanger or the operation of indoor temperature control case heat exchanger; Second by-passing valve and first control valve are closed; Second control valve and first by-passing valve are opened, and the room conditioning heat exchanger provides heat or cold to room air, and the indoor temperature control case is not worked; And under the same external condition, the flow of compressor frequency and electric expansion valve is greater than or equals the value that air-conditioning and controlled temperature cabinet are worked simultaneously.
10. tandem air-conditioning according to claim 8 and controlled temperature cabinet all-in-one progress control method; It is characterized in that: when described room conditioning heat exchanger or the operation of indoor temperature control case heat exchanger; Second by-passing valve and first control valve are opened; Second control valve and first by-passing valve are closed, and indoor temperature control case heat exchanger provides heat or cold to the controlled temperature cabinet space, and air-conditioning is not worked; And under the same external condition, the flow of compressor frequency and electric expansion valve is less than or equals the value that room conditioning and controlled temperature cabinet are worked simultaneously.
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| CN201210223337.XA CN102734885B (en) | 2012-06-29 | 2012-06-29 | Serial air conditioner and temperature regulating box all-in-one machine and operation control method thereof |
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| CN201210223337.XA CN102734885B (en) | 2012-06-29 | 2012-06-29 | Serial air conditioner and temperature regulating box all-in-one machine and operation control method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743266A (en) * | 2014-01-20 | 2014-04-23 | Tcl空调器(中山)有限公司 | Heat exchanger, method for controlling same, outdoor unit of air conditioner and indoor unit thereof |
| CN103868173A (en) * | 2012-12-13 | 2014-06-18 | 美的集团股份有限公司 | Control method for temperature in controlled temperature cabinet of integrated machine and integrated machine system |
| CN103868193A (en) * | 2012-12-13 | 2014-06-18 | 美的集团股份有限公司 | Control method for temperature in controlled temperature cabinet of integrated machine and air conditioner and controlled temperature cabinet integrated machine |
| CN105318522A (en) * | 2015-11-09 | 2016-02-10 | 珠海格力电器股份有限公司 | Air conditioning system indoor heat exchanging structure, air conditioning system and control method of air conditioning system |
| CN105423470A (en) * | 2015-12-31 | 2016-03-23 | 尚宝龙 | Multifunctional integrated cooling and heating device for building |
| CN106152336A (en) * | 2015-04-16 | 2016-11-23 | 美的集团武汉制冷设备有限公司 | Refrigerator and air conditioner all-in-one |
| CN107560000A (en) * | 2017-10-23 | 2018-01-09 | 刘丽华 | A kind of desktop Portable air-conditioning |
| CN111412516A (en) * | 2020-03-30 | 2020-07-14 | 江苏蕴石灵实业有限公司 | Heating unit bottom plate of safe and energy-saving floor heating stone |
| CN111765546A (en) * | 2020-07-08 | 2020-10-13 | 珠海格力电器股份有限公司 | Air conditioning unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103868173A (en) * | 2012-12-13 | 2014-06-18 | 美的集团股份有限公司 | Control method for temperature in controlled temperature cabinet of integrated machine and integrated machine system |
| CN103868193A (en) * | 2012-12-13 | 2014-06-18 | 美的集团股份有限公司 | Control method for temperature in controlled temperature cabinet of integrated machine and air conditioner and controlled temperature cabinet integrated machine |
| CN103743266A (en) * | 2014-01-20 | 2014-04-23 | Tcl空调器(中山)有限公司 | Heat exchanger, method for controlling same, outdoor unit of air conditioner and indoor unit thereof |
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| CN106152336A (en) * | 2015-04-16 | 2016-11-23 | 美的集团武汉制冷设备有限公司 | Refrigerator and air conditioner all-in-one |
| CN105318522A (en) * | 2015-11-09 | 2016-02-10 | 珠海格力电器股份有限公司 | Air conditioning system indoor heat exchanging structure, air conditioning system and control method of air conditioning system |
| CN105318522B (en) * | 2015-11-09 | 2018-12-25 | 珠海格力电器股份有限公司 | Heat exchange structure, air-conditioning system and its control method in a kind of air-conditioning system room |
| CN105423470A (en) * | 2015-12-31 | 2016-03-23 | 尚宝龙 | Multifunctional integrated cooling and heating device for building |
| CN105423470B (en) * | 2015-12-31 | 2019-07-12 | 沈阳市通浩科技有限公司 | Multi-use architecture one heating-cooling device |
| CN107560000A (en) * | 2017-10-23 | 2018-01-09 | 刘丽华 | A kind of desktop Portable air-conditioning |
| CN111412516A (en) * | 2020-03-30 | 2020-07-14 | 江苏蕴石灵实业有限公司 | Heating unit bottom plate of safe and energy-saving floor heating stone |
| CN111765546A (en) * | 2020-07-08 | 2020-10-13 | 珠海格力电器股份有限公司 | Air conditioning unit |
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| CN102734885B (en) | 2015-02-25 |
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Effective date of registration: 20131202 Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Applicant after: Midea Group Co., Ltd. Address before: 528311 Beijiao, Guangdong, Shunde Town, Penglai Road, Industrial Avenue, Applicant before: Meidi Electric Appliances Co., Ltd., Guangdong |
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