CN108954568A - Online pipe for air-conditioning system - Google Patents
Online pipe for air-conditioning system Download PDFInfo
- Publication number
- CN108954568A CN108954568A CN201811028824.4A CN201811028824A CN108954568A CN 108954568 A CN108954568 A CN 108954568A CN 201811028824 A CN201811028824 A CN 201811028824A CN 108954568 A CN108954568 A CN 108954568A
- Authority
- CN
- China
- Prior art keywords
- air
- conditioning system
- pipeline section
- tracheae
- switch valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 85
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 239000002826 coolant Substances 0.000 claims abstract description 40
- 239000003507 refrigerant Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 5
- 238000004781 supercooling Methods 0.000 abstract description 13
- 238000005057 refrigeration Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
- F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention belongs to air-conditioning technical fields, and in particular to a kind of online pipe for air-conditioning system.In order to solve the problems such as on-line mode of the existing air conditioner endotracheal cooling capacity in refrigeration cannot efficiently use, tracheae pipeline is easy to cause to generate condensed water, cannot be further added by supercooling apparatus according to the actual situation, online pipe of the invention includes the tracheae being connected between outdoor unit and indoor unit and liquid pipe, tracheae includes at least the first pipeline section, and the first pipeline section is arranged to the structure being in contact with liquid pipe；During air-conditioning system refrigerating operaton, the gaseous coolant for entering tracheae from indoor pusher side flows to outdoor pusher side after the liquid refrigerants in the first pipeline section and liquid pipe carries out heat exchange.After online pipe of the invention is applied to air-conditioning system, the refrigerating capacity of air-conditioning system not only can be improved, further improve the problem of tracheae pipeline condensation drips.And not needing to be modified original indoor unit and outdoor unit can increase to the present invention online pipe in air-conditioning system, simple installation.
Description
Technical field
The invention belongs to air-conditioning technical fields, and in particular to a kind of online pipe for air-conditioning system.
Background technique
During installation, indoor unit and outdoor unit are all attached by online pipe air conditioner, and by the tracheae of online pipe
Insulation is distinguished with liquid pipe, energy loss of the air-conditioning system in refrigerating/heating is reduced with this, while playing security protection
Purpose.But this on-line mode of existing air conditioner, in cooling in summer, the cooling capacity of intratracheal low-temp low-pressure refrigerant obtains not
It is slatterned to effective use, and if tracheae pipeline heat insulation is bad, the condensed water of tracheae pipeline is easy to cause to drip, caused
Pipeline drips, drainage.
In addition, existing air conditioner or be equipped with supercooling apparatus or be not equipped with supercooling apparatus, and not having for volume production
There is the air conditioner for being equipped with supercooling apparatus, so supercooling apparatus can not be further added by according to the actual situation, to cause not because having formed
Just.
Therefore, the invention proposes a kind of new online pipes to solve the above problems.
Summary of the invention
In order to solve the above problem in the prior art, in order to solve the on-line mode of the existing air conditioner gas in refrigeration
Cooling capacity in pipe cannot efficiently use, tracheae pipeline is easy to cause to generate condensed water, cannot be further added by according to the actual situation
The problems such as device for cooling, the invention proposes a kind of online pipes for air-conditioning system, and the air-conditioning system includes outdoor unit and room
Interior machine, the online pipe include the tracheae being connected between the outdoor unit and the indoor unit and liquid pipe, and the tracheae is at least
Including the first pipeline section, first pipeline section is arranged to the structure being in contact with the liquid pipe；In the air-conditioning system refrigerating operaton
During, the gaseous coolant for entering the tracheae from indoor pusher side is cold by first pipeline section and the liquid in the liquid pipe
Matchmaker flows to outdoor pusher side after carrying out heat exchange.
In the preferred embodiment of above-mentioned online pipe, the tracheae further includes be arranged in parallel with first pipeline section
Two pipeline sections, second pipeline section are arranged to the structure mutually separated with the liquid pipe；Second pipeline section only allows the air-conditioning system
When system heating operation, the gaseous coolant flowed from outdoor unit side to indoor unit side passes through.
In the preferred embodiment of above-mentioned online pipe, first pipeline section is provided with the first check valve, second pipe
Section is provided with second one-way valve, and first check valve allows the gaseous coolant for entering the tracheae from indoor pusher side to pass through, with
And prevent the gaseous coolant for entering the tracheae from the outdoor pusher side；The second one-way valve allows to enter institute from outdoor pusher side
The gaseous coolant for stating tracheae passes through, and prevents the gaseous coolant for entering the tracheae from the indoor pusher side.
In the preferred embodiment of above-mentioned online pipe, first pipeline section is additionally provided with first switch valve, when the sky
When adjusting system refrigerating operaton, the first switch valve is in the open state；When the air-conditioning system heating operation, described first
Switch valve is in close state.
In the preferred embodiment of above-mentioned online pipe, second pipeline section is additionally provided with second switch valve, when the sky
When adjusting system refrigerating operaton, the second switch valve is in close state；When the air-conditioning system heating operation, described second
Switch valve is in the open state.
In the preferred embodiment of above-mentioned online pipe, first pipeline section is provided with first switch valve, second pipe
Section is provided with second one-way valve, and the second one-way valve allows the gaseous coolant for entering the tracheae from outdoor pusher side to pass through, with
And prevent the gaseous coolant for entering the tracheae from the indoor pusher side；When the air-conditioning system refrigerating operaton, described first
Switch valve is in the open state；When the air-conditioning system heating operation, the first switch valve is in close state.
In the preferred embodiment of above-mentioned online pipe, first pipeline section is provided with first switch valve, second pipe
Section is provided with second switch valve, and when the air-conditioning system refrigerating operaton, the first switch valve is in the open state, and described the
Two switch valves are in close state；When the air-conditioning system heating operation, the first switch valve is in close state, described
Second switch valve is in the open state.
In the preferred embodiment of above-mentioned online pipe, first pipeline section is provided with the first check valve, second pipe
Section is provided with second switch valve, and first check valve allows the gaseous coolant for entering the tracheae from indoor pusher side to pass through, with
And prevent the gaseous coolant for entering the tracheae from the outdoor pusher side；When the air-conditioning system refrigerating operaton, described second
Switch valve is in close state；When the air-conditioning system heating operation, the second switch valve is in the open state.
In the preferred embodiment of above-mentioned online pipe, the first switch valve is the first solenoid valve, the second switch
Valve is second solenoid valve.
In the preferred embodiment of above-mentioned online pipe, the portion envelops that first pipeline section is in contact with the liquid pipe have
Thermal insulation casing.
Online pipe of the invention is installed on after indoor unit and outdoor unit, especially in air-conditioning system refrigerating operaton, a side
Face, so that the liquid refrigerants of the high temperature and pressure in liquid pipe is further subcooled, the degree of supercooling before increasing liquid refrigerants throttling, thus
The refrigerating capacity of air-conditioning system is improved, on the other hand, so that the gaseous coolant of low-temp low-pressure improves the degree of superheat, that is, improves pressure
The suction temperature of contracting machine, the problem of dripping so as to improve tracheae pipeline condensation.In addition, for there is no assembled in advance supercooling apparatus
Air-conditioning system, those skilled in the art can neatly increase according to the actual situation the online pipe into air-conditioning system using as
The supercooling apparatus of air-conditioning system, and the online pipe structure is simply easy to install, does not need to carry out original indoor unit and outdoor unit
Change can increase to the online pipe in air-conditioning system, to play the role of improving air-conditioning system refrigeration effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the online pipe for air-conditioning system of the invention.
Specific embodiment
To keep the embodiment of the present invention purposes, technical schemes and advantages more obvious, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that the embodiment of the description is a part of the embodiments of the present invention, and
It is not all of embodiment.It will be apparent to a skilled person that these embodiments are used only for explaining skill of the invention
Art principle, it is not intended that limit the scope of the invention.
Referring to Fig.1, Fig. 1 is the structural schematic diagram of the online pipe for air-conditioning system of the invention.As shown in Figure 1, air-conditioning
System includes outdoor unit and indoor unit, and online pipe of the invention includes the tracheae 1 and liquid being connected between outdoor unit and indoor unit
Pipe 2.Wherein, tracheae 1 includes the first pipeline section 11, which is arranged to the structure being in contact with liquid pipe 2, as shown in Figure 1
The structure that fits together with liquid pipe 2 of the first pipeline section 11.During air-conditioning system refrigerating operaton, the height of compressor discharge
Warm high-pressure gaseous refrigerant enters the liquid refrigerants that outdoor unit heat release forms high temperature and pressure, the high temperature and pressure liquid refrigerant of outdoor pusher side
Indoor unit is flowed to along liquid pipe 2, forms the gaseous coolant of low-temp low-pressure after machine evaporation indoors, the gaseous coolant of indoor pusher side enters
Liquid pipe 1 simultaneously flows to outdoor pusher side after the first pipeline section 11 carries out heat exchange with the liquid refrigerants in liquid pipe 2, is sucked by compressor
After open subsequent cycle.
It will be appreciated to those of skill in the art that since the gaseous coolant of low-temp low-pressure is in the first pipeline section 11 and liquid pipe 2
Carry out heat exchange, on the one hand, so that the liquid refrigerants of the high temperature and pressure in liquid pipe 2 is further subcooled, increase liquid refrigerants section
Degree of supercooling before stream, so that the refrigerating capacity of air-conditioning system is improved, on the other hand, so that the gaseous coolant of low-temp low-pressure improves
The problem of degree of superheat improves the suction temperature of compressor, drip so as to improve tracheae pipeline condensation.In addition, for not having
There is the air-conditioning system of assembled in advance supercooling apparatus, those skilled in the art can neatly increase the online pipe according to the actual situation
Into air-conditioning system using the supercooling apparatus as air-conditioning system, and the online pipe structure is simply easy to install, does not need to original
Indoor unit and outdoor unit, which are modified, to increase to the online pipe in air-conditioning system, improve air-conditioning system refrigeration to play
The effect of effect.
As an example, with continued reference to Fig. 1, for having the air-conditioning system freezed and heat dual function, the present invention
Online pipe further include the second pipeline section 12 being arranged in parallel with the first pipeline section 11, the second pipeline section 12 is arranged to mutually separate with liquid pipe 2
Structure, the structure that the second pipeline section 12 as shown in Figure 1 is separated with 2 phase of liquid pipe.Second pipeline section 12 only allows air-conditioning system system
When heat operation, the gaseous coolant flowed from outdoor unit side to indoor unit side passes through.Specifically, in air-conditioning system heating operation
In the process, the high pressure gaseous refrigerant of compressor discharge enters the room the liquid refrigerants that machine heat release forms high temperature and pressure, due to
Compressor is located outside machine, and the gaseous coolant of high temperature and pressure from outdoor pusher side enters tracheae 1 and after the second pipeline section 12 at this time
Flow to indoor pusher side.
It will be appreciated by persons skilled in the art that in air-conditioning system heating operations, the gas of high temperature and pressure in order to prevent
State refrigerant carries out heat exchange with the liquid refrigerants in liquid pipe 2 by the first pipeline section 11, therefore makes the first pipeline section 11 in air-conditioning system
It is in an off state when heating operation, i.e., does not allow gaseous coolant by the first pipeline section 11 under heating state；And in air-conditioning system
In process of refrigerastion, in order to ensure the gaseous coolant of low-temp low-pressure carries out heat with the liquid refrigerants in liquid pipe 2 by the first pipeline section 11
Exchange, therefore be in an off state the second pipeline section 12 in air-conditioning system refrigerating operaton, i.e., do not allow gaseous state under refrigerating state
Refrigerant passes through the second pipeline section 12.
Specific implementation of the invention is illustrated below with reference to different.As an example, as shown in Figure 1, the first pipe
Section 11 is provided with the first check valve 111, and the second pipeline section 12 is provided with second one-way valve 121, and the first check valve 111 allows from interior
The gaseous coolant that pusher side enters tracheae 1 passes through, and prevents the gaseous coolant for entering tracheae 1 from outdoor pusher side；Second one-way valve
121 gaseous coolants for allowing to enter from outdoor pusher side tracheae 1 pass through, and prevent the gaseous state for entering tracheae 1 from indoor pusher side cold
Matchmaker.Preferably, 11 sections of the first pipeline section can also increase first switch valve 112 (such as first solenoid valve), so as to preferably
Prevent the situation that the gaseous coolant in heating operations in the second pipeline 12 passes through the first pipeline 11.
Originally possess technical staff it is understood that can be realized by the first check valve 111 and second one-way valve 121:
The first pipeline section 11 is connected when refrigeration, and the second pipeline section 12 disconnects；The second pipeline section 12 is connected when heating, and the first pipeline section 11 disconnects；I.e. certainly
The flowing of dynamic control gaseous coolant.First switch valve 112 can selectively be increased according to the actual situation by those skilled in the art
Add or does not increase.
As other feasible schemes, such as in the situation for being provided with the first check valve 111 and second one-way valve 121
Under, it is not provided with first switch valve 112, but second switch valve is set in the second pipeline section 12.Similarly, when air-conditioning system refrigerating operaton
When, second switch valve is in close state；When air-conditioning system heating operation, second switch valve is in the open state.Second opens
Closing valve can also selectively be increased according to the actual situation by those skilled in the art or not increased.
As other feasible schemes, first switch valve 112 only is set in the first pipeline section 11, is arranged in the second pipeline section 12
The first check valve 111 is no longer arranged in second one-way valve 121.Second one-way valve 121 allows to enter tracheae 1 from outdoor pusher side
Gaseous coolant passes through, and prevents the gaseous coolant for entering tracheae 1 from indoor pusher side.Similarly, when air-conditioning system refrigerating operaton,
First switch valve 112 is in the open state；When air-conditioning system heating operation, first switch valve 112 is in close state.Or
Person, is provided with the first check valve 111 in the first pipeline section 11, and second switch valve is only arranged in the second pipeline section 12, i.e. no longer setting the
Two check valves 121.The gaseous coolant that first check valve 111 allows to enter from indoor pusher side tracheae 1 passes through, and prevents from outdoor
Pusher side enters the gaseous coolant of tracheae 1.Similarly, when air-conditioning system refrigerating operaton, second switch valve is in close state；Work as sky
When adjusting system heating operation, second switch valve is in the open state.
As other feasible schemes, it is not provided with the first check valve 111 and second one-way valve 121, only in the first pipeline section
Second switch valve, when air-conditioning system refrigerating operaton, first switch valve is arranged in 11 setting first switch valves 112, then the second pipeline section
112 is in the open state, and second switch valve is in close state；When air-conditioning system heating operation, first switch valve 112 is in
Closed state, second switch valve are in the open state.
It should be noted that above-described embodiment is only illustratively to illustrate technical solution of the present invention, those skilled in the art
Member is also an option that any other reasonable manner to control the first pipeline section 11 when air-conditioning system switches between refrigeration and heating
It is turned on and off mode with second pipeline section 12, these are without departure from protection scope of the present invention.First switch valve among the above
112 and second switch valve may each be solenoid valve.
In a kind of specific embodiment, the portion envelops that the first pipeline section 11 and liquid pipe 2 are in contact have thermal insulation casing, with
It improves the gaseous coolant in the first pipeline section 11 and the liquid refrigerants in liquid pipe 2 carries out the exchange efficiency of cold and hot amount.
In conclusion online pipe of the invention is installed on after indoor unit and outdoor unit, especially freezes in air-conditioning system and transport
When row, on the one hand, so that the liquid refrigerants of the high temperature and pressure in liquid pipe is further subcooled, the mistake before increasing liquid refrigerants throttling
Cold degree, so that the refrigerating capacity of air-conditioning system is improved, on the other hand, so that the gaseous coolant of low-temp low-pressure improves the degree of superheat,
The problem of improving the suction temperature of compressor, dripping so as to improve tracheae pipeline condensation.In addition, for not filling in advance
Air-conditioning system with supercooling apparatus, those skilled in the art can neatly increase the online pipe to air-conditioning system according to the actual situation
Using the supercooling apparatus as air-conditioning system in system, and the online pipe structure is simply easy to install, do not need to original indoor unit and
Outdoor unit, which is modified, to increase to the online pipe in air-conditioning system, to play the work for improving air-conditioning system refrigeration effect
With.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
Claims (10)
1. a kind of online pipe for air-conditioning system, the air-conditioning system includes outdoor unit and indoor unit, which is characterized in that described
Online pipe includes the tracheae being connected between the outdoor unit and the indoor unit and liquid pipe,
The tracheae includes at least the first pipeline section, and first pipeline section is arranged to the structure being in contact with the liquid pipe；
During the air-conditioning system refrigerating operaton, enter the gaseous coolant of the tracheae by described the from indoor pusher side
Liquid refrigerants in one pipeline section and the liquid pipe flows to outdoor pusher side after carrying out heat exchange.
2. the online pipe according to claim 1 for air-conditioning system, which is characterized in that the tracheae further include with it is described
The second pipeline section that first pipeline section is arranged in parallel, second pipeline section are arranged to the structure mutually separated with the liquid pipe；
When second pipeline section only allows the air-conditioning system heating operation, the gaseous state flowed from outdoor unit side to indoor unit side is cold
Matchmaker passes through.
3. the online pipe according to claim 2 for air-conditioning system, which is characterized in that first pipeline section is provided with
One check valve, second pipeline section are provided with second one-way valve,
First check valve allows the gaseous coolant for entering the tracheae from indoor pusher side to pass through, and prevents from the outdoor
Pusher side enters the gaseous coolant of the tracheae；
The second one-way valve allows the gaseous coolant for entering the tracheae from outdoor pusher side to pass through, and prevents from the interior
Pusher side enters the gaseous coolant of the tracheae.
4. the online pipe according to claim 3 for air-conditioning system, which is characterized in that first pipeline section is additionally provided with
First switch valve,
When the air-conditioning system refrigerating operaton, the first switch valve is in the open state；
When the air-conditioning system heating operation, the first switch valve is in close state.
5. the online pipe according to claim 3 for air-conditioning system, which is characterized in that second pipeline section is additionally provided with
Second switch valve,
When the air-conditioning system refrigerating operaton, the second switch valve is in close state；
When the air-conditioning system heating operation, the second switch valve is in the open state.
6. the online pipe according to claim 2 for air-conditioning system, which is characterized in that first pipeline section is provided with
One switch valve, second pipeline section are provided with second one-way valve,
The second one-way valve allows the gaseous coolant for entering the tracheae from outdoor pusher side to pass through, and prevents from the interior
Pusher side enters the gaseous coolant of the tracheae；
When the air-conditioning system refrigerating operaton, the first switch valve is in the open state；
When the air-conditioning system heating operation, the first switch valve is in close state.
7. the online pipe according to claim 2 for air-conditioning system, which is characterized in that first pipeline section is provided with
One switch valve, second pipeline section are provided with second switch valve,
When the air-conditioning system refrigerating operaton, the first switch valve is in the open state, and the second switch valve, which is in, to close
Closed state；
When the air-conditioning system heating operation, the first switch valve is in close state, and the second switch valve is in and opens
Open state.
8. the online pipe according to claim 2 for air-conditioning system, which is characterized in that first pipeline section is provided with
One check valve, second pipeline section are provided with second switch valve,
First check valve allows the gaseous coolant for entering the tracheae from indoor pusher side to pass through, and prevents from the outdoor
Pusher side enters the gaseous coolant of the tracheae；
When the air-conditioning system refrigerating operaton, the second switch valve is in close state；
When the air-conditioning system heating operation, the second switch valve is in the open state.
9. the online pipe according to claim 7 for air-conditioning system, which is characterized in that the first switch valve is first
Solenoid valve, the second switch valve are second solenoid valve.
10. the online pipe according to any one of claim 1 to 9 for air-conditioning system, which is characterized in that described first
The portion envelops that pipeline section is in contact with the liquid pipe have thermal insulation casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811028824.4A CN108954568A (en) | 2018-09-05 | 2018-09-05 | Online pipe for air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811028824.4A CN108954568A (en) | 2018-09-05 | 2018-09-05 | Online pipe for air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108954568A true CN108954568A (en) | 2018-12-07 |
Family
ID=64475856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811028824.4A Pending CN108954568A (en) | 2018-09-05 | 2018-09-05 | Online pipe for air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108954568A (en) |
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| CN106016458A (en) * | 2016-05-31 | 2016-10-12 | 广东美的暖通设备有限公司 | Air conditioner and mode switching control method thereof |
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| CN107490091A (en) * | 2017-08-08 | 2017-12-19 | 青岛海尔空调器有限总公司 | Air conditioner |
| CN107576104A (en) * | 2017-09-26 | 2018-01-12 | 青岛海尔空调电子有限公司 | Refrigerant regulating system and air conditioner for air conditioner |
| CN108361884A (en) * | 2018-01-23 | 2018-08-03 | 青岛海尔空调电子有限公司 | Air-conditioning system |
| CN208886933U (en) * | 2018-09-05 | 2019-05-21 | 青岛海尔空调电子有限公司 | Online pipe for air-conditioning system |
-
2018
- 2018-09-05 CN CN201811028824.4A patent/CN108954568A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060117534A (en) * | 2005-05-11 | 2006-11-17 | 엘지전자 주식회사 | Connecting pipe for air-conditioner |
| CN201246932Y (en) * | 2008-06-23 | 2009-05-27 | 海尔集团公司 | Coolant circulating system in air conditioner |
| JP2011106721A (en) * | 2009-11-17 | 2011-06-02 | Seimitsu:Kk | Precise temperature control air conditioner |
| CN205718075U (en) * | 2016-05-24 | 2016-11-23 | 万家乐空气能科技有限公司 | A kind of air energy heat pump |
| CN106016458A (en) * | 2016-05-31 | 2016-10-12 | 广东美的暖通设备有限公司 | Air conditioner and mode switching control method thereof |
| CN107490091A (en) * | 2017-08-08 | 2017-12-19 | 青岛海尔空调器有限总公司 | Air conditioner |
| CN107576104A (en) * | 2017-09-26 | 2018-01-12 | 青岛海尔空调电子有限公司 | Refrigerant regulating system and air conditioner for air conditioner |
| CN108361884A (en) * | 2018-01-23 | 2018-08-03 | 青岛海尔空调电子有限公司 | Air-conditioning system |
| CN208886933U (en) * | 2018-09-05 | 2019-05-21 | 青岛海尔空调电子有限公司 | Online pipe for air-conditioning system |
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