CN104048366B - Air conditioner and outdoor unit thereof, heating air supply method and cooling air supply method - Google Patents
Air conditioner and outdoor unit thereof, heating air supply method and cooling air supply method Download PDFInfo
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- CN104048366B CN104048366B CN201310085070.7A CN201310085070A CN104048366B CN 104048366 B CN104048366 B CN 104048366B CN 201310085070 A CN201310085070 A CN 201310085070A CN 104048366 B CN104048366 B CN 104048366B
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- 238000001816 cooling Methods 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 7
- 238000005057 refrigeration Methods 0.000 claims description 67
- 239000012530 fluid Substances 0.000 claims description 65
- 238000005273 aeration Methods 0.000 claims description 55
- 230000001502 supplementing effect Effects 0.000 claims description 52
- 238000001514 detection method Methods 0.000 claims description 46
- 238000004378 air conditioning Methods 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 43
- 238000001704 evaporation Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention provides an outdoor unit of an air conditioner, comprising: the outdoor heat exchanger is used for connecting a first pipeline of the indoor unit and the outdoor heat exchanger, and is connected in series with an outdoor electronic expansion valve on the first pipeline; the compressor is a first dual rotor compressor having: the first auxiliary air suction port, the first main air suction port and the first exhaust port are respectively connected with a four-way valve of the air conditioner; the outdoor unit further includes: a medium pressure liquid storage tank for being located between indoor set and outdoor electronic expansion valve, medium pressure liquid storage tank concatenates on first pipeline, and medium pressure liquid storage tank has: an air outlet connected with the first auxiliary air suction port through a first auxiliary pipeline, and an inlet and an outlet respectively connected with the first pipeline. The outdoor unit of the air conditioner provided by the invention improves the low-temperature heating capacity of the whole air conditioner by additionally arranging the medium-pressure liquid storage tank and selecting the first double-rotor compressor. The invention also provides an air conditioner and a heating air supply method and a refrigerating air supply method thereof.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, it relates to a kind of air-conditioner and its off-premises station, a kind of air-conditioner
The refrigeration supplementing method for air heating supplementing method for air and air-conditioner.
Background technology
With the development of air-conditioning technical, air-conditioner is gradually widely used.For air-conditioner, the quality directly shadow of compressor
Ring the performance of air-conditioner.Due to the limitation of compressor itself, the normal temperature range run of air conditioning system is limited, exists
The not good problem of low-temperature heating ability.In heating operations, with the decline of ambient temperature, the evaporating temperature of cold-producing medium declines,
The specific volume of suction side cold-producing medium constantly increases, and due to the compressor air suction constancy of volume, leads under the inspiration capacity of compressor
Fall is so that flow through the refrigerant amount minimizing of outdoor heat exchanger and indoor heat exchanger, the heating capacity of air-conditioner declines therewith, is easier to
The not good problem of low-temperature heating occurs.
In addition, in heating operations, the inspiration capacity of the compressor running in low temperature environment declines, and is relatively easily caused the row of compressor
Temperature spends height so that the reliability of compressor is relatively low.
In addition, in high-temperature refrigeration, air-conditioner also can have that refrigerating capacity is not good.In process of refrigerastion, with
Ambient temperature rise, heat transfer temperature difference reduce, the heat exchange of outdoor heat exchanger more difficult it is necessary to by raising frequency improve refrigerant flow
Improve heat exchange, but raising frequency can lead to excessive discharge temperature, leads to the reliability of compressor relatively low.
In sum, how to improve the low-temperature heating ability of air-conditioner, be that current those skilled in the art are urgently to be resolved hurrily
Problem.
Content of the invention
It is an object of the invention to provide a kind of off-premises station of air-conditioner, to improve the low-temperature heating ability of air-conditioner.This
Bright another object is that provide a kind of air-conditioner, a kind of air-conditioner heat supplementing method for air and refrigeration supplementing method for air.
To achieve these goals, the present invention provides following technical scheme：
A kind of off-premises station of air-conditioner, including：Compressor, outdoor heat exchanger, changes for connecting indoor set and described outdoor
First pipeline of hot device, is serially connected with the outdoor electrical expansion valve on described first pipeline；Wherein, described compressor is first pair turn
Sub- compressor, described first two-spool compressor has：First assisted inhalation mouth, it is connected with the cross valve of described air-conditioner respectively
The first main air entry and first row QI KOU；
Described off-premises station also includes：For the middle pressure liquid storage between described indoor set and described outdoor electrical expansion valve
Tank, medium pressure fluid reservoir is serially connected with described first pipeline, and medium pressure fluid reservoir has：By the first auxiliary piping with
The described first assisted inhalation mouth gas outlet being connected, the import being connected with described first pipeline respectively and liquid outlet；
Described off-premises station also includes：
It is serially connected with the first aeration valve on described first auxiliary piping；
Detection outdoor temperature, and send the temperature sensor of temperature detection signal；
Detect the first running frequency of described first two-spool compressor, and send the first sensing of first detection signal
Device；
It is connected with described temperature sensor, described first sensor and described first aeration valve respectively, receive described temperature
Detection signal and described first detection signal, in heating operation, heat preset temperature when outdoor temperature is less than, and described first fortune
Line frequency, more than when heating predeterminated frequency, opens the first controller of described first aeration valve；
It is connected with described temperature sensor, described first sensor and described first aeration valve respectively, receive described temperature
Detection signal and described first detection signal, in refrigerating operaton, when outdoor temperature is more than refrigeration preset temperature, and described first fortune
When line frequency is more than refrigeration predeterminated frequency, open the 3rd controller of described first aeration valve.
Preferably, the off-premises station of above-mentioned air-conditioner, also includes second pair in parallel with described first two-spool compressor and turns
Sub- compressor, described second two-spool compressor has：Assist by the second auxiliary piping is connected with described gas outlet second
Air entry, the second main air entry being connected with described cross valve respectively and second exhaust port.
Preferably, the off-premises station of above-mentioned air-conditioner, also includes：
It is serially connected with the second aeration valve on described second auxiliary piping；
Detect the second running frequency of described second two-spool compressor, and send the second sensing of the second detection signal
Device；
It is connected with described temperature sensor, described second sensor and described second aeration valve respectively, receive described temperature
Detection signal and described second detection signal, in heating operation, heat preset temperature when outdoor temperature is less than, and described second fortune
Line frequency, more than when heating predeterminated frequency, opens the second controller of described second aeration valve；
It is connected with described temperature sensor, described second sensor and described second aeration valve respectively, receive described temperature
Detection signal and described second detection signal, in refrigerating operaton, when outdoor temperature is more than refrigeration preset temperature, and described second fortune
When line frequency is more than refrigeration predeterminated frequency, open the 4th controller of described second aeration valve.
The off-premises station of the air-conditioner that the present invention provides, by setting up middle pressure fluid reservoir and selecting the first birotor compression
Machine, in heating operations, supercool liquid refrigerant in middle pressure fluid reservoir is passed through outdoor heat exchanger, thus it is outdoor to reduce entrance
The enthalpy of the cold-producing medium of heat exchanger, increases the temperature difference of the refrigerant temperature entering outdoor heat exchanger and outdoor temperature, thus carrying
The high evaporation capacity of liquid refrigerant, and then improve the inspiration capacity of the first main air entry of the first two-spool compressor；Meanwhile,
Gaseous refrigerant in middle pressure fluid reservoir from first assisted inhalation mouth enter the first two-spool compressor, and with through the first main air inlet
Gaseous refrigerant after the gaseous refrigerant of mouth entrance the first two-spool compressor is compressed to certain pressure mixes, and compresses further
Discharge the first two-spool compressor from first row QI KOU afterwards, which further increases the air inflow of the first two-spool compressor.
Therefore the off-premises station of air-conditioner provided in an embodiment of the present invention, improve entering of the first two-spool compressor during low-temperature heating
Tolerance, and then improve the low-temperature heating ability of whole air-conditioner.
The off-premises station of the air-conditioner based on above-mentioned offer, present invention also offers a kind of air-conditioner, this air-conditioner includes：Room
Interior machine and the off-premises station being connected with described indoor set, described indoor set is included indoor heat exchanger and is connected with described indoor heat exchanger
Indoor electronic expansion valve；Wherein, described off-premises station is the off-premises station of the air-conditioner described in above-mentioned any one；Wherein, described
The middle pressure fluid reservoir of off-premises station is located between described indoor electronic expansion valve and described outdoor electrical expansion valve.
Based on the air-conditioner of above-mentioned offer, present invention also offers a kind of air-conditioner heat supplementing method for air, described air-conditioning
Utensil has the off-premises station of air-conditioner described above, and the supplementing method for air that heats of described air-conditioner includes step：
1) air-conditioner, the first operation frequency of the first two-spool compressor of detection outdoor temperature and described off-premises station are opened
Rate；
2) heat preset temperature when outdoor temperature is less than, and described first running frequency, more than when heating predeterminated frequency, is controlled
The middle pressure fluid reservoir making described off-premises station is to described first two-spool compressor QI invigorating.
Preferably, above-mentioned air-conditioner heat in supplementing method for air, described off-premises station also includes and described first birotor pressure
Contracting machine the second two-spool compressor in parallel, described second two-spool compressor has the second main air entry, the second assisted inhalation
Mouth and second exhaust port；Described second assisted inhalation mouth is connected with described gas outlet by the second auxiliary piping；
Described air-conditioner heat in supplementing method for air, described step 1) also include step：Detect described second birotor pressure
Second running frequency of contracting machine；
Described step 2) also include step：Heat preset temperature when outdoor temperature is less than, and described second running frequency is big
When heating predeterminated frequency, control medium pressure fluid reservoir to described second two-spool compressor QI invigorating.
Preferably, above-mentioned air-conditioner heat in supplementing method for air, described off-premises station also includes：It is serially connected with described second auxiliary
The second aeration valve on pipeline；
Described air-conditioner heat in supplementing method for air, described step 2) in control medium pressure fluid reservoir to described first pair
Rotor compressor QI invigorating is specially：Described first aeration valve is controlled to open；Medium pressure fluid reservoir is controlled to turn to described second pair
Sub- compressor QI invigorating is specially：Described second aeration valve is controlled to open.
Preferably, above-mentioned air-conditioner heat in supplementing method for air, described heat preset temperature be -3 DEG C, described heat default
Frequency is 80Hz.
Based on the air-conditioner of above-mentioned offer, present invention also offers a kind of refrigeration supplementing method for air of air-conditioner, described air-conditioning
Utensil has the off-premises station of above-mentioned air-conditioner, and the refrigeration supplementing method for air of described air-conditioner includes step：
1) air-conditioner, the first operation frequency of the first two-spool compressor of detection outdoor temperature and described off-premises station are opened
Rate；
2) when outdoor temperature is more than refrigeration preset temperature, and when described first running frequency is more than refrigeration predeterminated frequency, control
The middle pressure fluid reservoir making described off-premises station is to described first two-spool compressor QI invigorating.
Preferably, in the refrigeration supplementing method for air of above-mentioned air-conditioner, described off-premises station also includes and described first birotor pressure
Contracting machine the second two-spool compressor in parallel, described second two-spool compressor has the second main air entry, the second assisted inhalation
Mouth and second exhaust port；Described second assisted inhalation mouth is connected with described gas outlet by the second auxiliary piping；
In the refrigeration supplementing method for air of described air-conditioner, described step 1) also include step：Detect described second birotor pressure
Second running frequency of contracting machine；
Described step 2) also include step：When outdoor temperature is more than refrigeration preset temperature, and described second running frequency is big
When refrigeration predeterminated frequency, control medium pressure fluid reservoir to described second two-spool compressor QI invigorating.
Preferably, in the refrigeration supplementing method for air of above-mentioned air-conditioner, described off-premises station also includes：It is serially connected with described second auxiliary
The second aeration valve on pipeline；
In the refrigeration supplementing method for air of described air-conditioner, described step 2) in, control medium pressure fluid reservoir to described first
Two-spool compressor QI invigorating is specially：Described first aeration valve is controlled to open；Control medium pressure fluid reservoir to described second pair
Rotor compressor QI invigorating is specially：Described second aeration valve is controlled to open.
Preferably, in the refrigeration supplementing method for air of above-mentioned air-conditioner, described refrigeration preset temperature is 42 DEG C, and described refrigeration is default
Frequency is 75Hz.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the off-premises station of air-conditioner provided in an embodiment of the present invention；
Fig. 2 be air-conditioner provided in an embodiment of the present invention off-premises station constitute air-conditioner in heating operations cold-producing medium
Enthalpy and the relation schematic diagram of pressure；
Fig. 3 be air-conditioner provided in an embodiment of the present invention off-premises station constitute air-conditioner in process of refrigerastion cold-producing medium
Enthalpy and the relation schematic diagram of pressure.
In figure 1 above -3：
Cross valve 11, oil eliminator 12, outdoor heat exchanger 13, the second two-spool compressor 14, the second aeration valve 15, outdoor
Electric expansion valve 16, the first pipeline 17, the first aeration valve 18, middle pressure fluid reservoir 19, pressure transducer 110, the first birotor pressure
Contracting machine 111, gas-liquid separator 112, indoor heat exchanger 21, indoor electronic expansion valve 22.
Specific embodiment
Embodiments provide a kind of off-premises station of air-conditioner, improve the low-temperature heating ability of air-conditioner.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to accompanying drawing 1-3, Fig. 1 is the structural representation of the off-premises station of air-conditioner provided in an embodiment of the present invention；Fig. 2 is
The air-conditioner that the off-premises station of air-conditioner provided in an embodiment of the present invention the is constituted enthalpy of cold-producing medium and pressure in heating operations
Relation schematic diagram；Fig. 3 is that the air-conditioner of the off-premises station composition of air-conditioner provided in an embodiment of the present invention freezes in process of refrigerastion
The enthalpy of agent and the relation schematic diagram of pressure.Wherein, in Fig. 1, dotted line inframe is the off-premises station of air-conditioner.The horizontal seat of Fig. 2 and Fig. 3
Mark is respectively the enthalpy h of cold-producing medium, and vertical coordinate is respectively the common logarithm LgP of refrigerant pressure.
The off-premises station of air-conditioner provided in an embodiment of the present invention, including：Compressor, outdoor heat exchanger 13, for junction chamber
Interior machine and the first pipeline 17 of outdoor heat exchanger 13, are serially connected with the outdoor electrical expansion valve 16 on the first pipeline 17；Wherein, compress
Machine is the first two-spool compressor 111, and the first two-spool compressor 111 has：First assisted inhalation mouth, respectively with air-conditioner
The first main air entry and first row QI KOU that cross valve 11 is connected；Off-premises station also includes：For positioned at indoor set and outdoor electrical
Middle pressure fluid reservoir 19 between expansion valve 16, middle pressure fluid reservoir 19 is serially connected with the first pipeline 17, and middle pressure fluid reservoir 19 has：
The gas outlet being connected with the first assisted inhalation mouth by the first auxiliary piping, the import being connected with the first pipeline 17 respectively and go out liquid
Mouthful.
At present, indoor set mainly includes indoor heat exchanger 21 and the indoor electronic expansion valve being connected with indoor heat exchanger 21
22.In the off-premises station of air-conditioner provided in an embodiment of the present invention, middle pressure fluid reservoir 19 is used for swollen positioned at indoor set and outdoor electrical
Between swollen valve 16, by the structure of indoor set it is known that middle pressure fluid reservoir 19 is used for positioned at indoor electronic expansion valve 22 and outdoor electrical
Between expansion valve 16.Need between the suction end of compressor and cross valve to arrange gas-liquid separator, the exhaust end of compressor and four
Need between port valve to arrange oil eliminator, therefore set between the first main air entry of the first two-spool compressor 111 and cross valve 11
It is equipped with gas-liquid separator 112, between the first row QI KOU of the first two-spool compressor 111 and cross valve 11, be provided with oil eliminator
12, that is, the first main air entry of the first two-spool compressor 111 be connected with cross valve 11 by gas-liquid separator, the first birotor
The first row QI KOU of compressor 111 is connected with cross valve 11 by oil eliminator 12.Gas-liquid separator 112 and oil eliminator 12
It is set to prior art, repeat no more herein.
In the off-premises station of air-conditioner that above-described embodiment provides, middle pressure fluid reservoir 19 has flash distillation function, that is, press in flowing into
Liquid refrigerant in fluid reservoir 19 can occur flash distillation；Meanwhile, middle pressure fluid reservoir 19 can also store some refrigerant, particularly
Flow to the liquid refrigerant of outdoor heat exchanger 13 from long connecting tube when shutting down under high pressure drop condition (outer machine is low to be put).
The off-premises station of air-conditioner provided in an embodiment of the present invention, it is installed with indoor set, the whole air-conditioning of formation
Device, as illustrated in fig. 1 and 2, the heating operations of whole air-conditioner are：
Enter oil eliminator from the gaseous refrigerant (state point 23) of the first two-spool compressor 111 High Temperature High Pressure out
12, the gaseous refrigerant separated gets in heat exchanger 21 through cross valve 11 and condenses, and is changed into cryogenic high pressure after condensation
Liquid refrigerant (state point 24), the liquid refrigerant of cryogenic high pressure is changed in low temperature through indoor electronic expansion valve 22 reducing pressure by regulating flow
The cold-producing medium two-phase mixture (state point 24 ') of pressure, presses fluid reservoir 19 during the cold-producing medium two-phase mixture of pressure enters in low temperature, in
In pressure fluid reservoir 19, the gaseous refrigerant (state point 26) of shwoot returns to first through the first subsidiary loop and the first assisted inhalation mouth
Two-spool compressor 111, this loop is bypass；The continuous shwoot of cold-producing medium leads to the liquid refrigerant mistake in middle pressure fluid reservoir 19
Cold, supercool liquid refrigerant (state point 25), through outdoor electrical expansion valve 16 reducing pressure by regulating flow, is down to evaporating pressure (state point
25 ') outdoor heat exchanger 13 evaporation of absorbing heat, gaseous refrigerant (state point 21) warp of the high-temperature low-pressure after heat absorption evaporation are entered afterwards
First main air entry returns to the first two-spool compressor 111, and this loop is main road；Flow into the first two-spool compressor through main road
111 gaseous refrigerant be compressed to certain pressure (state point 22) afterwards with through bypass flow into the first two-spool compressor 111 gas
State cold-producing medium mixes, and mixed cold-producing medium (state point 22 ') is further compressed, and then discharges first pair from first row QI KOU
Rotor compressor 111, constitutes and heats circulation.
The off-premises station of air-conditioner provided in an embodiment of the present invention, it is installed with indoor set, the whole air-conditioning of formation
Device, as shown in figures 1 and 3, the process of refrigerastion of whole air-conditioner is：
During refrigerating operaton, from the gaseous refrigerant (state point 13) of the first two-spool compressor 111 High Temperature High Pressure out
Enter oil eliminator 12, the gaseous refrigerant separated enters outdoor heat exchanger 13 through cross valve 11 and condenses, and becomes after condensation
Liquid refrigerant (state point 14) for cryogenic high pressure, the liquid refrigerant of cryogenic high pressure throttles through outdoor electrical expansion valve 16 and drops
Buckling is the cold-producing medium two-phase mixture (state point 14 ') of pressure in low temperature, during in low temperature, the cold-producing medium two-phase mixture of pressure enters
Pressure fluid reservoir 19, the middle pressure saturation gaseous refrigerant (state point 16) in middle pressure fluid reservoir 19 is auxiliary through the first subsidiary loop and first
Air entry is helped to return to the first two-spool compressor 111, this loop is bypass；The continuous shwoot of cold-producing medium leads to middle pressure fluid reservoir 19
Interior liquid refrigerant is supercool, and supercool liquid refrigerant (state point 15) throttles again through indoor electronic expansion valve 22, becomes
For the cold-producing medium two-phase mixture (state point 15 ') of low-temp low-pressure, the cold-producing medium two-phase mixture of low-temp low-pressure gets in and changes
Hot device 21 simultaneously evaporates, and the gaseous refrigerant (state point 11) of the high-temperature low-pressure becoming after evaporation returns to first through the first main air entry
Two-spool compressor 111, this loop is main road；Inside the first two-spool compressor 111, the cold-producing medium of high-temperature low-pressure is compressed
To after certain pressure (state point 12), and the gaseous refrigerant mixing of the middle pressure saturation returned from bypass, mixed cold-producing medium
(state point 12 ') is further compressed, and then discharges the first two-spool compressor 111 from first row QI KOU, constitutes kind of refrigeration cycle.
The off-premises station of air-conditioner provided in an embodiment of the present invention, by setting up middle pressure fluid reservoir 19 and selecting first pair to turn
Sub- compressor 111, in heating operations, supercool liquid refrigerant in middle pressure fluid reservoir 19 is passed through outdoor heat exchanger 13, thus
Reduce the enthalpy of the cold-producing medium entering outdoor heat exchanger 13, increase the refrigerant temperature entering outdoor heat exchanger 13 and outdoor
The temperature difference of temperature, thus improve the evaporation capacity of liquid refrigerant, and then improves the first master of the first two-spool compressor 111
The inspiration capacity of air entry；Meanwhile, the gaseous refrigerant in middle pressure fluid reservoir 19 enters the first birotor from the first assisted inhalation mouth
Compressor 111, and it is compressed to certain pressure with the gaseous refrigerant entering the first two-spool compressor 111 through the first primary air inlet
Gaseous refrigerant mixing afterwards, discharges the first two-spool compressor 111 from first row QI KOU after compressing further, so further
Increased the air inflow of the first two-spool compressor 111.Therefore the off-premises station of air-conditioner provided in an embodiment of the present invention, in low temperature system
Improve the air inflow of the first two-spool compressor 111 in thermal process, and then improve the low-temperature heating ability of whole air-conditioner.
Meanwhile, the off-premises station of air-conditioner provided in an embodiment of the present invention, improves first pair during low-temperature heating and turns
The air inflow of sub- compressor 111, thus reduce the delivery temperature of the first two-spool compressor 111, it is to avoid the first birotor
The excessive discharge temperature of compressor 111, improves the reliability of the first two-spool compressor 111.
Meanwhile, the off-premises station of air-conditioner provided in an embodiment of the present invention, by setting up middle pressure fluid reservoir 19 and selecting the
One two-spool compressor 111, in process of refrigerastion, supercool liquid refrigerant in middle pressure fluid reservoir 19 is passed through indoor heat exchanger
21, thus reducing the enthalpy of the cold-producing medium getting in heat exchanger 21, increase the cold-producing medium temperature getting in heat exchanger 21
Degree and the temperature difference of indoor temperature, thus improve caloric receptivity and the evaporation capacity of liquid refrigerant, thus improve the first birotor
The inspiration capacity of the first main air entry of compressor 111 and the high-temperature refrigeration ability of whole air-conditioner；Meanwhile, middle pressure fluid reservoir 19
Interior gaseous refrigerant enters the first two-spool compressor 111 from the first assisted inhalation mouth, and enters with through the first primary air inlet
Gaseous refrigerant after the gaseous refrigerant of the first two-spool compressor 111 is compressed to certain pressure mixes, after compressing further
Discharge the first two-spool compressor 111 from first row QI KOU, which further increases the air inlet of the first two-spool compressor 111
Amount.Therefore the off-premises station of air-conditioner provided in an embodiment of the present invention, improve the high-temperature refrigeration ability of whole air-conditioner.
In the off-premises station of air-conditioner that above-described embodiment provides, middle pressure fluid reservoir 19 is internal to be middle pressure, because pressing in entering
The refrigerant pressure of fluid reservoir 19 is between evaporating pressure and condensing pressure.
In order to optimize technique scheme further, the off-premises station of the air-conditioner that above-described embodiment provides, also include：With
Second two-spool compressor 14 of one two-spool compressor 111 parallel connection, the second two-spool compressor 14 has：Assist by second
The second assisted inhalation mouth, the second main air entry being connected with described cross valve 11 respectively and second row that pipeline is connected with gas outlet
QI KOU.Using two two-spool compressors in parallel, compared with using a two-spool compressor, two birotor pressures in parallel
The running frequency of contracting machine is lower than the running frequency of a two-spool compressor, thus improve the table in medium and low frequency section for the air-conditioner
Existing, improve the off-premises station of whole air-conditioner I PLV (integrated part load value, comprehensive partly load
Energy coefficient), and then improve the efficiency of whole air-conditioner.
Generally, need between the suction end of compressor and cross valve to arrange gas-liquid separator, the exhaust end of compressor and four
Need to arrange oil eliminator between port valve, therefore in the off-premises station of air-conditioner of above-described embodiment offer, the second two-spool compressor
14 the second main air entry is connected with cross valve 11 by gas-liquid separator 112, the second exhaust of the second two-spool compressor 14
Mouth is connected with cross valve 11 by oil eliminator 12.
In the off-premises station of air-conditioner provided in an embodiment of the present invention, when indoor refrigeration duty (or thermic load) demand reaches necessarily
During degree, open the first two-spool compressor 111 simultaneously and the second two-spool compressor 14 runs, (or heat is negative with refrigeration duty
Lotus) be gradually reduced, two-spool compressor run the demand that is sufficient for and efficiency higher when, then open the first birotor pressure
Contracting machine 111 runs or opens the second two-spool compressor 14 and runs.
For the ease of controlling to the first two-spool compressor 111 and the second two-spool compressor 14 QI invigorating, above-described embodiment
The off-premises station of the air-conditioner providing, also includes：It is serially connected with the first aeration valve 18 on the first auxiliary piping；It is serially connected with the second auxiliary
The second aeration valve 15 on pipeline；Detection outdoor temperature, and send the temperature sensor of temperature detection signal；Detection first pair turns
First running frequency of sub- compressor 111, and send the first sensor of first detection signal；Detect the second two-spool compressor
14 the second running frequency, and send the second sensor of the second detection signal；Respectively with temperature sensor, first sensor and
First aeration valve 18 is connected, and receives temperature detection signal and first detection signal, in heating operation, heats when outdoor temperature is less than
Preset temperature, and the first running frequency, more than when heating predeterminated frequency, opens the first controller of the first aeration valve 18；Respectively with
Temperature sensor, second sensor are connected with the second aeration valve 15, receive temperature detection signal and the second detection signal, heat fortune
In row, heat preset temperature when outdoor temperature is less than, and the second running frequency, more than when heating predeterminated frequency, opens the second QI invigorating
The second controller of valve 15；It is connected with temperature sensor, first sensor and the first aeration valve 18 respectively, receive temperature detection letter
Number and first detection signal, in refrigerating operaton, when outdoor temperature be more than refrigeration preset temperature, and the first running frequency be more than refrigeration
During predeterminated frequency, open the 3rd controller of the first aeration valve 18；Respectively with temperature sensor, second sensor and the second QI invigorating
Valve 15 is connected, and receives temperature detection signal and the second detection signal, in refrigerating operaton, when outdoor temperature is more than the default temperature of refrigeration
Degree, and when the second running frequency is more than refrigeration predeterminated frequency, open the 4th controller of the second aeration valve 15.
The off-premises station of the air-conditioner that above-described embodiment provides, by controlling opening of the first aeration valve 18 and the second aeration valve 15
Open, to control and QI invigorating to be carried out to the first two-spool compressor 111 and the second two-spool compressor 14 it is not necessary to during QI invigorating, you can
Close the first aeration valve 18 and the second aeration valve 15, thus facilitating the control of QI invigorating, thus further increasing air-conditioner
Efficiency.Preferably, controller calculates required air compensation, by aperture or the indoor electromagnetism of the outer electromagnetic expanding valve 16 of regulation room
The aperture of expansion valve 22, adjusts air compensation.When air compensation needed for air-conditioner is larger, then turn opening of outdoor electromagnetic expanding valve 16 down
Degree or the aperture of indoor electromagnetic expanding valve 22；When air compensation needed for air-conditioner is less, then tune up outdoor electromagnetic expanding valve 16
Aperture or indoor electromagnetic expanding valve 22 aperture.Specifically, in heating operations, by adjusting indoor electromagnetic expanding valve 22
Aperture is adjusting air compensation；In process of refrigerastion, air compensation is adjusted by the aperture of the outer electromagnetic expanding valve 16 of regulation room.
In the off-premises station of air-conditioner that above-described embodiment provides, the first controller, second controller, the 3rd controller and the
Four controllers, can be arbitrarily integrated.For the ease of install and manufacture, prioritizing selection, the first controller, second controller, the 3rd
Controller and the 4th controller are integrated in the control mainboard of the off-premises station of air-conditioner.
Preferably, the off-premises station of the air-conditioner that above-described embodiment provides, also includes being arranged at gas outlet, and pressure storage in detection
The pressure transducer 110 of pressure in flow container 19.So, it is easy to know the pressure of gaseous refrigerant in middle pressure fluid reservoir 19.
The off-premises station of the air-conditioner being provided based on above-described embodiment, the embodiment of the present invention additionally provides a kind of air-conditioner, should
Air-conditioner includes：Indoor set and the off-premises station being connected with indoor set, indoor set includes indoor heat exchanger 21 and and indoor heat exchanger
The 21 indoor electronic expansion valves 22 being connected；Off-premises station is the off-premises station of the air-conditioner described in above-described embodiment；Wherein, off-premises station
Middle pressure fluid reservoir 19 is located between indoor electronic expansion valve 22 and outdoor electrical expansion valve 16.
Off-premises station due to the air-conditioner of above-described embodiment offer has above-mentioned technique effect, provided in an embodiment of the present invention
Air-conditioner has the off-premises station of the air-conditioner of above-described embodiment offer, then air-conditioner provided in an embodiment of the present invention also has accordingly
Technique effect, repeat no more herein.
The off-premises station of the air-conditioner being provided based on above-described embodiment, the embodiment of the present invention additionally provides a kind of system of air-conditioner
Vulcanize gas method, this air-conditioner have above-described embodiment offer air-conditioner off-premises station, this air-conditioner heat supplementing method for air
Including step：
S01：Open air-conditioner, the first operation frequency of the first two-spool compressor 111 of detection outdoor temperature and off-premises station
Rate；
After air-conditioner starts to heat, the first running frequency of detection outdoor temperature and the first two-spool compressor 111.Its
In, outdoor temperature refers to outdoor environment temperature.Generally adopt temperature-sensitive bag to detect outdoor temperature, other temperature certainly may also be employed
Sensor.
S02：Heat preset temperature when outdoor temperature is less than, and the first running frequency, more than when heating predeterminated frequency, controls
The middle pressure fluid reservoir 19 of off-premises station is to the first two-spool compressor 111 QI invigorating.
Heat preset temperature and heat predeterminated frequency, need the performance setting according to air-conditioner, the embodiment of the present invention is to this
Do not make specifically defined, generally choose and heat preset temperature for -3 DEG C, heating predeterminated frequency is 80Hz.Middle pressure fluid reservoir 19 is through the
One assisted inhalation mouth is to the first two-spool compressor 111 QI invigorating.
Off-premises station due to the air-conditioner of above-described embodiment offer has above-mentioned technique effect, provided in an embodiment of the present invention
Air-conditioner heat in supplementing method for air, this air-conditioner has the off-premises station of the air-conditioner of above-described embodiment offer, then the present invention is real
The supplementing method for air that heats applying the air-conditioner of example offer also has corresponding technique effect, repeats no more herein.
Preferably, above-described embodiment provide air-conditioner heat in supplementing method for air, off-premises station also include and first pair turn
Second two-spool compressor 14 of sub- compressor 111 parallel connection, the second two-spool compressor 14 has the second main air entry, second auxiliary
Help air entry and second exhaust port；Second assisted inhalation mouth is connected with gas outlet by the second auxiliary piping；Above-mentioned air-conditioner
Heat in supplementing method for air, step S01 also includes step：Detect the second running frequency of the second two-spool compressor 14；Step S02
Also include step：Heat preset temperature when outdoor temperature is less than, and the second running frequency is more than when heating predeterminated frequency, in control
Pressure fluid reservoir 19 is to the second two-spool compressor 14 QI invigorating.So it is achieved that respectively to two two-spool compressor QI invigorating, favorably
In the efficiency improving whole air-conditioner.
For the ease of realizing control to QI invigorating, air-conditioner that above-described embodiment provides heat in supplementing method for air, outdoor
Machine also includes：It is serially connected with the first aeration valve 18 on the first auxiliary piping, and the second QI invigorating being serially connected with the second auxiliary piping
Valve 15；Above-mentioned air-conditioner heat in supplementing method for air, in step S02 control in pressure fluid reservoir 19 to the first two-spool compressor
111 QI invigorating are specially：The first aeration valve 18 is controlled to open；In control, pressure fluid reservoir 19 has to the second two-spool compressor 14 QI invigorating
Body is：The second aeration valve 15 is controlled to open.Certainly, the embodiment of the present invention also can realize QI invigorating by miscellaneous part, for example, set
Put switch etc..
Preferably, above-described embodiment provide air-conditioner heat in supplementing method for air, step S02 also includes：Work as outdoor temp
Degree is less than or equal to and heats preset temperature, and described first running frequency is less than or equal to when heating predeterminated frequency, stops
Middle pressure fluid reservoir 19 specifically, closes the first aeration valve through the first assisted inhalation mouth to the first two-spool compressor 111 QI invigorating
18；Heat preset temperature when outdoor temperature is less than or equal to, and described second running frequency is default less than or equal to heating
During frequency, in stopping, pressure fluid reservoir 19, through the second assisted inhalation mouth to the second two-spool compressor 14 QI invigorating, specifically, closes the
Two aeration valves 15.
Above-described embodiment provide air-conditioner heat in supplementing method for air, also can calculate air compensation, by adjust indoor electric
The aperture of magnetic expansion valve 22 is adjusting air compensation.When air compensation needed for air-conditioner is larger, then turn indoor electromagnetic expanding valve 22 down
Aperture；When air compensation needed for air-conditioner is less, then tune up the aperture of indoor electromagnetic expanding valve 22.
The off-premises station of the air-conditioner being provided based on above-described embodiment, the embodiment of the present invention additionally provides a kind of system of air-conditioner
Cold-patch gas method, this air-conditioner has the off-premises station of the air-conditioner of above-described embodiment offer, the refrigeration supplementing method for air of this air-conditioner
Including step：
S11：Open air-conditioner, the first operation frequency of the first two-spool compressor 111 of detection outdoor temperature and off-premises station
Rate；
After air-conditioner starts refrigeration, the first running frequency of detection outdoor temperature and the first two-spool compressor 111.Its
In, outdoor temperature refers to outdoor environment temperature.Generally adopt temperature-sensitive bag to detect outdoor temperature, other temperature certainly may also be employed
Sensor.
S12：When outdoor temperature is more than refrigeration preset temperature, and when described first running frequency is more than refrigeration predeterminated frequency,
The middle pressure fluid reservoir 19 controlling off-premises station is to described first two-spool compressor 111 QI invigorating.
Refrigeration preset temperature and refrigeration predeterminated frequency, need the performance setting according to air-conditioner, the embodiment of the present invention is to this
Do not make specifically defined, generally choose refrigeration preset temperature and be 42 DEG C, refrigeration predeterminated frequency is 75Hz.Middle pressure fluid reservoir 19 is through the
One assisted inhalation mouth is to described first two-spool compressor 111 QI invigorating.
Off-premises station due to the air-conditioner of above-described embodiment offer has above-mentioned technique effect, provided in an embodiment of the present invention
In the refrigeration supplementing method for air of air-conditioner, this air-conditioner has the off-premises station of the air-conditioner of above-described embodiment offer, then the present invention is real
The refrigeration supplementing method for air applying the air-conditioner of example offer also has corresponding technique effect, repeats no more herein.
Preferably, in the refrigeration supplementing method for air of air-conditioner that above-described embodiment provides, off-premises station also includes turning with first pair
Second two-spool compressor 14 of sub- compressor 111 parallel connection, the second two-spool compressor 14 has the second main air entry, second auxiliary
Help air entry and second exhaust port；Second assisted inhalation mouth is connected with described gas outlet by the second auxiliary piping；Above-mentioned air-conditioning
In the refrigeration supplementing method for air of device, step S11 also includes step：Detect the second running frequency of the second two-spool compressor 14；Step
Rapid S12 also includes step：When outdoor temperature is more than refrigeration preset temperature, and when the second running frequency is more than refrigeration predeterminated frequency,
In control, pressure fluid reservoir 19 is to the second two-spool compressor 14 QI invigorating.So it is achieved that mending to two two-spool compressors respectively
Gas, is conducive to improving the efficiency of whole air-conditioner.
For the ease of realizing the control to QI invigorating, in the refrigeration supplementing method for air of air-conditioner that above-described embodiment provides, outdoor
Machine also includes：It is serially connected with the first aeration valve 18 on the first auxiliary piping, and the second QI invigorating being serially connected with the second auxiliary piping
Valve 15；In the refrigeration supplementing method for air of above-mentioned air-conditioner, in described step S12, in control, pressure fluid reservoir 19 is to the first birotor pressure
Contracting machine 111 QI invigorating is specially：The first aeration valve 18 is controlled to open；In control, pressure fluid reservoir 19 is mended to the second two-spool compressor 14
Gas is specially：The second aeration valve 15 is controlled to open.Certainly, the embodiment of the present invention also can realize QI invigorating, example by miscellaneous part
As arranged switch etc..
Preferably, in the refrigeration supplementing method for air of air-conditioner that above-described embodiment provides, step S12 also includes：Work as outdoor temp
Degree is less than or equal to refrigeration preset temperature, and when the first running frequency is less than or equal to refrigeration predeterminated frequency, presses in stopping
Fluid reservoir 19 specifically, closes the first aeration valve 18 through the first assisted inhalation mouth to the first two-spool compressor 111 QI invigorating；When
Outdoor temperature is less than or equal to refrigeration preset temperature, and described second running frequency is less than or equal to refrigeration predeterminated frequency
When, in stopping, pressure fluid reservoir 19, through the second assisted inhalation mouth to the second two-spool compressor 14 QI invigorating, specifically, closes the second benefit
Air valve 15.
In the refrigeration supplementing method for air of air-conditioner that above-described embodiment provides, also can calculate air compensation, by regulation room dispatch from foreign news agency
The aperture of sub- expansion valve 16 is adjusting air compensation.When air compensation needed for air-conditioner is larger, then turn outdoor electromagnetic expanding valve 16 down
Aperture；When air compensation needed for air-conditioner is less, then tune up the aperture of outdoor electromagnetic expanding valve 16.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (13)
1. a kind of off-premises station of air-conditioner, including：Compressor, outdoor heat exchanger, for connecting indoor set and described outdoor heat exchange
First pipeline of device, is serially connected with the outdoor electrical expansion valve on described first pipeline；It is characterized in that,
Described compressor is the first two-spool compressor, and described first two-spool compressor has：First assisted inhalation mouth, difference
The first main air entry being connected with the cross valve of described air-conditioner and first row QI KOU；
Described off-premises station also includes：Middle pressure fluid reservoir between described indoor set and described outdoor electrical expansion valve, described
Middle pressure fluid reservoir is serially connected with described first pipeline, and medium pressure fluid reservoir has：By the first auxiliary piping and described the
Gas outlet, the import being connected with described first pipeline respectively and liquid outlet that one assisted inhalation mouth is connected；
Described off-premises station also includes：
It is serially connected with the first aeration valve on described first auxiliary piping；
Detection outdoor temperature, and send the temperature sensor of temperature detection signal；
Detect the first running frequency of described first two-spool compressor, and send the first sensor of first detection signal；
It is connected with described temperature sensor, described first sensor and described first aeration valve respectively, receive described temperature detection
Signal and described first detection signal, in heating operation, heat preset temperature when outdoor temperature is less than, and described first run frequency
Rate, more than when heating predeterminated frequency, opens the first controller of described first aeration valve；
It is connected with described temperature sensor, described first sensor and described first aeration valve respectively, receive described temperature detection
Signal and described first detection signal, in refrigerating operaton, when outdoor temperature is more than refrigeration preset temperature, and described first runs frequency
When rate is more than refrigeration predeterminated frequency, open the 3rd controller of described first aeration valve.
2. the off-premises station of air-conditioner according to claim 1 is it is characterised in that also include and described first birotor compression
Machine the second two-spool compressor in parallel, described second two-spool compressor has：Given vent to anger with described by the second auxiliary piping
The second assisted inhalation mouth, the second main air entry being connected with described cross valve respectively and second exhaust port that mouth is connected.
3. the off-premises station of air-conditioner according to claim 2 is it is characterised in that also include：
It is serially connected with the second aeration valve on described second auxiliary piping；
Detect the second running frequency of described second two-spool compressor, and send the second sensor of the second detection signal；
It is connected with described temperature sensor, described second sensor and described second aeration valve respectively, receive described temperature detection
Signal and described second detection signal, in heating operation, heat preset temperature when outdoor temperature is less than, and described second run frequency
Rate, more than when heating predeterminated frequency, opens the second controller of described second aeration valve；
It is connected with described temperature sensor, described second sensor and described second aeration valve respectively, receive described temperature detection
Signal and described second detection signal, in refrigerating operaton, when outdoor temperature is more than refrigeration preset temperature, and described second runs frequency
When rate is more than refrigeration predeterminated frequency, open the 4th controller of described second aeration valve.
4. the off-premises station of the air-conditioner according to any one in claim 1-3 is it is characterised in that also include：It is arranged at
Described gas outlet, and detect the pressure transducer of medium pressure liquid storage pressure inside the tank.
5. a kind of air-conditioner, including：Indoor set and the off-premises station being connected with described indoor set, described indoor set includes indoor heat exchange
Device and the indoor electronic expansion valve being connected with described indoor heat exchanger；It is characterized in that, described off-premises station is as claim 1-4
The off-premises station of the air-conditioner described in middle any one；Wherein, the middle pressure fluid reservoir of described off-premises station is swollen positioned at described indoor electronic
Between swollen valve and described outdoor electrical expansion valve.
6. a kind of air-conditioner heat supplementing method for air it is characterised in that described air-conditioner has air-conditioning as claimed in claim 1
The off-premises station of device, the supplementing method for air that heats of described air-conditioner includes step：
1) air-conditioner, the first running frequency of the first two-spool compressor of detection outdoor temperature and described off-premises station are opened；
2) heat preset temperature when outdoor temperature is less than, and described first running frequency, more than when heating predeterminated frequency, controls institute
The middle pressure fluid reservoir stating off-premises station is to described first two-spool compressor QI invigorating.
7. air-conditioner as claimed in claim 6 heat supplementing method for air it is characterised in that
Described off-premises station also includes second two-spool compressor in parallel with described first two-spool compressor, and described second pair turns
Sub- compressor has the second main air entry, the second assisted inhalation mouth and second exhaust port；Described second assisted inhalation mouth passes through the
Two auxiliary pipings are connected with described gas outlet；
Described air-conditioner heat in supplementing method for air, described step 1) also include step：Detect described second two-spool compressor
The second running frequency；
Described step 2) also include step：Heat preset temperature when outdoor temperature is less than, and described second running frequency is more than system
During hot predeterminated frequency, control medium pressure fluid reservoir to described second two-spool compressor QI invigorating.
8. air-conditioner as claimed in claim 7 heat supplementing method for air it is characterised in that described off-premises station also includes：Concatenation
The second aeration valve on described second auxiliary piping；
Described air-conditioner heat in supplementing method for air, described step 2) in control medium pressure fluid reservoir to described first birotor
Compressor QI invigorating is specially：Described first aeration valve is controlled to open；Control medium pressure fluid reservoir to described second birotor pressure
Contracting machine QI invigorating is specially：Described second aeration valve is controlled to open.
9. the air-conditioner as described in any one in claim 6-8 heat supplementing method for air it is characterised in that described heat pre-
If temperature is -3 DEG C, the described predeterminated frequency that heats is 80Hz.
10. a kind of refrigeration supplementing method for air of air-conditioner is it is characterised in that described air-conditioner has sky as claimed in claim 1
Adjust the off-premises station of device, the refrigeration supplementing method for air of described air-conditioner includes step：
1) air-conditioner, the first running frequency of the first two-spool compressor of detection outdoor temperature and described off-premises station are opened；
2) when outdoor temperature is more than refrigeration preset temperature, and when described first running frequency is more than refrigeration predeterminated frequency, control institute
The middle pressure fluid reservoir stating off-premises station is to described first two-spool compressor QI invigorating.
The refrigeration supplementing method for air of 11. air-conditioners as claimed in claim 10 it is characterised in that
Described off-premises station also includes second two-spool compressor in parallel with described first two-spool compressor, and described second pair turns
Sub- compressor has the second main air entry, the second assisted inhalation mouth and second exhaust port；Described second assisted inhalation mouth passes through the
Two auxiliary pipings are connected with described gas outlet；
In the refrigeration supplementing method for air of described air-conditioner, described step 1) also include step：Detect described second two-spool compressor
The second running frequency；
Described step 2) also include step：When outdoor temperature is more than refrigeration preset temperature, and described second running frequency is more than system
During cold predeterminated frequency, control medium pressure fluid reservoir to described second two-spool compressor QI invigorating.
The refrigeration supplementing method for air of 12. air-conditioners as claimed in claim 11 is it is characterised in that described off-premises station also includes：String
It is connected to the second aeration valve on described second auxiliary piping；
In the refrigeration supplementing method for air of described air-conditioner, described step 2) in, control medium pressure fluid reservoir to turn to described first pair
Sub- compressor QI invigorating is specially：Described first aeration valve is controlled to open；Control medium pressure fluid reservoir to described second birotor
Compressor QI invigorating is specially：Described second aeration valve is controlled to open.
The refrigeration supplementing method for air of 13. air-conditioners as described in any one in claim 10-12 is it is characterised in that described system
Cold preset temperature is 42 DEG C, and described refrigeration predeterminated frequency is 75Hz.
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| CN201310085070.7A CN104048366B (en) | 2013-03-15 | 2013-03-15 | Air conditioner and outdoor unit thereof, heating air supply method and cooling air supply method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104764249A (en) * | 2015-04-07 | 2015-07-08 | 珠海格力电器股份有限公司 | Air-conditioning hot water system |
| KR102435203B1 (en) | 2015-10-20 | 2022-08-24 | 삼성전자주식회사 | Air conditioner and control method thereof |
| CN105928138B (en) * | 2016-04-25 | 2021-05-25 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN105758040A (en) * | 2016-04-29 | 2016-07-13 | 广东美的制冷设备有限公司 | Refrigerating and heating type air conditioner and control method thereof |
| CN105783308A (en) * | 2016-04-29 | 2016-07-20 | 广东美的制冷设备有限公司 | Single-cold type air conditioner and control method thereof |
| CN105910320A (en) * | 2016-04-29 | 2016-08-31 | 广东美的制冷设备有限公司 | Single-cold air conditioner and control method thereof |
| CN105737423B (en) * | 2016-04-29 | 2019-07-30 | 广东美的制冷设备有限公司 | Heating and air conditioner and its control method |
| CN105783313B (en) * | 2016-04-29 | 2019-08-30 | 广东美的制冷设备有限公司 | Single cold type air conditioner and its control method |
| CN108204691A (en) * | 2017-12-28 | 2018-06-26 | Tcl空调器(中山)有限公司 | Air-conditioning system and its control method |
| CN110793156B (en) * | 2019-11-19 | 2021-12-14 | 宁波奥克斯电气股份有限公司 | Air conditioner heating over-temperature protection control method and device and air conditioner |
| CN113446763A (en) * | 2020-03-24 | 2021-09-28 | 浙江盾安机电科技有限公司 | Water chiller, control method of water chiller, and computer-readable storage medium |
| CN112229086A (en) * | 2020-10-13 | 2021-01-15 | 青岛海信日立空调系统有限公司 | Air conditioner |
| CN112728729B (en) * | 2021-02-23 | 2022-04-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system and air conditioner with same |
| CN114484919A (en) * | 2022-02-25 | 2022-05-13 | 珠海格力电器股份有限公司 | Air conditioning system and control method |
| CN115371302B (en) * | 2022-07-14 | 2024-04-19 | 浙江中广电器集团股份有限公司 | Control method for enthalpy injection control of heat pump EVI multi-split refrigeration mode |
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