CN104019595B - The off-premises station of air-conditioner and the control method of air-conditioner - Google Patents
The off-premises station of air-conditioner and the control method of air-conditioner Download PDFInfo
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- CN104019595B CN104019595B CN201410289024.3A CN201410289024A CN104019595B CN 104019595 B CN104019595 B CN 104019595B CN 201410289024 A CN201410289024 A CN 201410289024A CN 104019595 B CN104019595 B CN 104019595B
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Abstract
The invention provides off-premises station and the control method of a kind of air-conditioner of a kind of air-conditioner, the off-premises station of air-conditioner, including: compressor；Cross valve, is connected to the air vent of described compressor；First Heat Exchanger, is connected between described cross valve and off-premises station stop valve；Gas-liquid separator, is connected between described cross valve and the first air inlet of described compressor；Second heat exchanger, the first end of described second heat exchanger is connected to described gas-liquid separator by the first pipeline；And first control parts, described first the first end controlling parts is connected to the optional position between described First Heat Exchanger and described off-premises station stop valve, described first the second end controlling parts is connected to the second end of described second heat exchanger, for being controlled the coolant quantity flowing through described second heat exchanger.Technical scheme can be on the premise of shortening the air-conditioner defrost time, it is to avoid the situation of liquid occurs back in compressor, it is ensured that security of system is reliable.
Description
Technical field
The present invention relates to air-conditioner technical field, in particular to a kind of air-conditioner off-premises station and
A kind of control method of air-conditioner.
Background technology
At present, the defrost mode of air-conditioner be usually coolant from compressor discharge flow into outdoor heat exchanger cold
Solidifying defrost, returns to compressor after entering back into indoor heat exchanger evaporation.But, owing to coolant needs
Through whole air-conditioner system, cause defrost the longest, affect the heating effect of air-conditioner.
For the problems referred to above, correlation technique propose from condensator outlet one coolant branch road of increase straight
Take back the technical scheme of the low-pressure inlet of compressor, although shorten the defrost time, but may increase
Add compressor returns liquid, and the discharge superheat causing compressor is low, affects the security reliability of system.
Therefore, how on the premise of shortening the air-conditioner defrost time, it is to avoid liquid occurs back in compressor
Situation, it is ensured that system safe and reliable becomes technical problem urgently to be resolved hurrily.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art or correlation technique.
To this end, it is an object of the present invention to propose one can shorten the air-conditioner defrost time
On the premise of, it is to avoid there is back the situation of liquid in compressor, it is ensured that the room of the reliable air-conditioner of security of system
Outer machine.
Further object is that the control method proposing a kind of air-conditioner accordingly.
For achieving the above object, embodiment according to the first aspect of the invention, it is proposed that a kind of air-conditioning
The off-premises station of device, including: compressor；Cross valve, is connected to the air vent of described compressor；First
Heat exchanger, is connected between described cross valve and off-premises station stop valve；Gas-liquid separator, is connected to institute
State between cross valve and the first air inlet of described compressor；Second heat exchanger, described second heat exchanger
The first end be connected to described gas-liquid separator by the first pipeline；And first control parts, described
First the first end controlling parts is connected between described First Heat Exchanger and described off-premises station stop valve
Optional position, the described first the second end controlling parts is connected to the second end of described second heat exchanger,
For the coolant quantity flowing through described second heat exchanger is controlled.
The off-premises station of air-conditioner according to an embodiment of the invention, by by the first end of the second heat exchanger
It is connected to gas-liquid separator, the second end of the second heat exchanger is controlled parts by first and is connected to first
Optional position between heat exchanger and off-premises station stop valve, enabling the master that off-premises station coolant flows to
Increase a branch road on arterial highway and be returned directly to compressor by the second heat exchanger after gas-liquid separator,
Shorten coolant and return to the time of compressor, thus shorten the defrost time of air-conditioner；Meanwhile, by
Return to after the coolant after First Heat Exchanger is by the second heat exchanger in compressor, because of
This, coolant can be evaporated by the second heat exchanger, it is to avoid liquid situation occurs back in compressor, strengthens
The security and stability of system.
It addition, the off-premises station of air-conditioner according to the above embodiment of the present invention, it is also possible to have the most attached
The technical characteristic added:
According to one embodiment of present invention, the first end of described second heat exchanger is by second pipe even
It is connected to the second air inlet of described compressor；The off-premises station of described air-conditioner also includes: the second control portion
Part, is arranged on described first pipeline, for flowing through described second heat exchanger and entering described gas-liquid and divide
Coolant quantity from device is controlled；3rd controls parts, is arranged on described second pipe, for convection current
It is controlled through the coolant quantity of described second heat exchanger the second air inlet entering described compressor.
The off-premises station of air-conditioner according to an embodiment of the invention, the first air inlet of above-mentioned compressor is
The low-pressure admission mouth of compressor, when being pressed into QI KOU in compressor has simultaneously, can be by through second
Coolant after heat exchanger be divided into two parts flow into compressor, i.e. second control parts close, the 3rd
Control parts when opening, coolant by second pipe enter compressor the second air inlet (compressor
In be pressed into QI KOU)；Controlling parts second to open, the 3rd controls parts when closing, and coolant is by the
One pipeline returns to the first air inlet of compressor after entering gas-liquid separator.
According to one embodiment of present invention, also include: pressure transducer, be arranged on described second control
The optional position on pipeline between parts processed and the first air inlet of described compressor.
The off-premises station of air-conditioner according to an embodiment of the invention, by controlling parts and compression second
On pipeline between first air inlet of machine, pressure transducer is set, to detect according to pressure transducer
Force value to first control parts, second control parts and the 3rd control parts be controlled, it is possible to
Guarantee the stability of system.
According to one embodiment of present invention, described first control parts, described second control parts and
Described 3rd controls parts includes: electric expansion valve or electromagnetic valve.
The invention allows for the off-premises station of another kind of air-conditioner, including: compressor；Cross valve, even
It is connected to the air vent of described compressor；Gas-liquid separator, is connected to described cross valve and described compressor
The first air inlet between；First Heat Exchanger, the first end of described First Heat Exchanger is connected to described four
Logical valve；Second heat exchanger, the first end of described second heat exchanger and the second end are respectively connecting to described
Second end of one heat exchanger and off-premises station stop valve, the 3rd end of described second heat exchanger is by the first control
Parts processed are connected to any position between the second end of described second heat exchanger and described off-premises station stop valve
Putting, the 4th end of described second heat exchanger is connected to described gas-liquid separator by the first pipeline, its
In, the first end of described second heat exchanger and the second end of described second heat exchanger are in described second heat exchange
The internal connection of device is first flow, the of the 3rd end of described second heat exchanger and described second heat exchanger
It is the second runner that four ends connect inside described second heat exchanger, described first flow and described second
Road does not connects inside described second heat exchanger；And described first control parts, for flowing through
The coolant quantity stating the second heat exchanger is controlled.
The off-premises station of air-conditioner according to an embodiment of the invention, by by the first end of the second heat exchanger
With the second end and the off-premises station stop valve that the second end is respectively connecting to First Heat Exchanger, and by the second heat exchange
3rd end of device controls parts by first and is connected to the second end and the off-premises station stop valve of the second heat exchanger
Between optional position, and the 4th end of the second heat exchanger is connected to gas-liquid separator, enabling
The major trunk roads that off-premises station coolant flows to increase a branch road by the second heat exchanger and gas-liquid separator
It is returned directly to compressor afterwards, shortens coolant and return to the time of compressor, thus shorten air-conditioner
The defrost time；Meanwhile, branch road coolant returns in compressor after being evaporated by the second heat exchanger, energy
In enough avoiding compressor, liquid situation occurs back, enhance the security and stability of system.
According to one embodiment of present invention, the 4th end of described second heat exchanger is by second pipe even
It is connected to the second air inlet of described compressor；The off-premises station of described air-conditioner also includes: the second control portion
Part, is arranged on described first pipeline, for flowing through described second heat exchanger and entering described gas-liquid and divide
Coolant quantity from device is controlled；3rd controls parts, is arranged on described second pipe, for right
The coolant quantity flowing through described second heat exchanger the second air inlet of entering described compressor is controlled.
The off-premises station of air-conditioner according to an embodiment of the invention, the first air inlet of above-mentioned compressor is
The low-pressure admission mouth of compressor, when being pressed into QI KOU in compressor has simultaneously, can be by through second
Coolant after heat exchanger be divided into two parts flow into compressor, i.e. second control parts close, the 3rd
Control parts when opening, coolant by second pipe enter compressor the second air inlet (compressor
In be pressed into QI KOU)；Controlling parts second to open, the 3rd controls parts when closing, and coolant is by the
One pipeline returns to the first air inlet of compressor after entering gas-liquid separator.
According to one embodiment of present invention, also include: pressure transducer, be arranged on described second control
The optional position on pipeline between parts processed and the first air inlet of described compressor.
The off-premises station of air-conditioner according to an embodiment of the invention, by controlling parts and compression second
On pipeline between first air inlet of machine, pressure transducer is set, to detect according to pressure transducer
Force value to first control parts, second control parts and the 3rd control parts be controlled, it is possible to
Guarantee the stability of system.
According to one embodiment of present invention, described first control parts, described second control parts and
Described 3rd controls parts can also include: electric expansion valve or electromagnetic valve.
According to one embodiment of present invention, described second heat exchanger includes: plate type heat exchanger or sleeve pipe
Formula heat exchanger.
According to the second aspect of the invention, it is proposed that the control method of a kind of air-conditioner, for above-mentioned
Embodiment only including, the off-premises station of the air-conditioner of the first control parts is controlled, described air-conditioner
Control method includes: judge whether to receive defrosting instruction；Judging that receiving described defrosting instructs
Time, control described first control parts and be in opening, to control after described First Heat Exchanger
Part coolant by being directly entered the first air inlet of described compressor after described second heat exchanger.
The control method of air-conditioner according to an embodiment of the invention, by receiving defrosting instruction
Time, control the first control parts and be in opening, enabling at the trunk that off-premises station coolant flows to
Increase a branch road on road and be returned directly to compressor by the second heat exchanger after gas-liquid separator, contracting
Short coolant returns to the time of compressor, thus shortens the defrost time of air-conditioner；Meanwhile, second
Branch road coolant can be evaporated by heat exchanger, it is to avoid liquid situation occurs back in compressor, enhances and is
The security and stability of system.
The invention allows for the control method of a kind of air-conditioner, for above-described embodiment being included the
The outdoor of one air-conditioner controlling parts, the second control parts, the 3rd control parts and pressure transducer
Machine is controlled, and the control method of described air-conditioner includes: judge whether to receive defrosting instruction；?
When judging to receive described defrosting instruction, control described first and control parts and described second control parts
It is in opening, and controls the described 3rd and control parts and be closed, to control by described
The coolant of the second heat exchanger enters the first air inlet of described compressor after described gas-liquid separator；
Obtain the force value that described pressure transducer detects；In the force value that described pressure transducer detects
When reaching predetermined value, control described second control parts and be closed, and control described first control
Parts processed and the described 3rd control parts and are in opening, to control by described second heat exchanger
Coolant enters the second air inlet of described compressor.
According to the control method of embodiments of the invention air-conditioner, by when receiving defrosting instruction,
Control the first control parts and be in opening, enabling on the major trunk roads that off-premises station coolant flows to
Increase a branch road and (be returned directly to the second air inlet of compressor by returning to compressor after the second heat exchanger
Mouthful or returned to the first air inlet of compressor by gas-liquid separator), shorten coolant and return to compressor
Time, thus shorten the defrost time of air-conditioner；Meanwhile, the second heat exchanger can be cold to branch road
Matchmaker is evaporated, it is to avoid liquid situation occurs back in compressor, enhances the security and stability of system.
Wherein, the first air inlet of compressor can be low-pressure admission mouth, during the second air inlet can be
It is pressed into QI KOU, and by when receiving defrosting instruction, first controls the first control parts and second and control
Parts are in opening and control the 3rd control parts are closed so that coolant can first lead to
The too low QI KOU that is pressed into returns compressor, and detects that the pressure of low-pressure inlet reaches one at pressure transducer
During definite value, control the first control parts and the 3rd control parts are in opening and control the second control
Parts are closed, so that coolant is pressed into QI KOU and returns compressor in passing through, and then guarantee compression
The stability of machine internal pressure.
The additional aspect of the present invention and advantage will part be given in the following description, and part will be from following
Description in become obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Embodiment is retouched by the above-mentioned and/or additional aspect of the present invention and advantage from combining accompanying drawings below
Will be apparent from easy to understand in stating, wherein:
Fig. 1 shows the structural representation of the off-premises station of air-conditioner according to an embodiment of the invention
Figure；
Fig. 2 shows the structural representation of the off-premises station of air-conditioner according to another embodiment of the invention；
Fig. 3 shows the structural representation of the off-premises station of air-conditioner according to still another embodiment of the invention
Figure；
Fig. 4 shows the structural representation of the off-premises station of air-conditioner according to still a further embodiment
Figure；
Fig. 5 shows the exemplary flow of the control method of air-conditioner according to an embodiment of the invention
Figure；
Fig. 6 shows the signal stream of the control method of air-conditioner according to another embodiment of the invention
Cheng Tu.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with attached
The present invention is further described in detail by figure and detailed description of the invention.It should be noted that do not rushing
In the case of Tu, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but,
The present invention can implement to use other to be different from other modes described here, therefore, and the present invention
Protection domain do not limited by following public specific embodiment.
Fig. 1 shows the structural representation of the off-premises station of air-conditioner according to an embodiment of the invention.
As it is shown in figure 1, the off-premises station of air-conditioner according to an embodiment of the invention, including: pressure
Contracting machine 1；Cross valve 2, is connected to the air vent 11 of described compressor 1；First Heat Exchanger 3, even
It is connected between described cross valve 2 and off-premises station stop valve 4；Gas-liquid separator 7, is connected to described four
Logical between valve 2 and the first air inlet 12 of described compressor 1；Second heat exchanger 6, described second changes
First end of hot device 6 is connected to described gas-liquid separator 7 by the first pipeline；And the first control portion
Part 5, the described first the first end controlling parts 5 is connected to described First Heat Exchanger 3 and described outdoor
Optional position between machine stop valve 4, the described first the second end controlling parts 5 is connected to described the
Second end of two heat exchangers 6, for being controlled the coolant quantity flowing through described second heat exchanger 6.
By the first end of the second heat exchanger 6 is connected to gas-liquid separator 7, by the second heat exchanger 6
The second end by first control parts 5 be connected between First Heat Exchanger 3 and off-premises station stop valve 4
Optional position, enabling on the major trunk roads that off-premises station coolant flows to, increase branch road by the
Two heat exchangers 6 are returned directly to compressor 1 after gas-liquid separator 7, shorten coolant and return to compression
The time of machine 1, thus shorten the defrost time of air-conditioner；Meanwhile, branch road coolant is by second
Returning in compressor 1 after heat exchanger 6, therefore, coolant can be steamed by the second heat exchanger 6
Send out, it is to avoid in compressor 1, liquid situation occurs back, enhance the security and stability of system.
The structure of the off-premises station of air-conditioner according to another embodiment of the invention is as in figure 2 it is shown, institute
The first end stating the second heat exchanger 6 is connected to the second air inlet of described compressor 1 by second pipe
13；The off-premises station of described air-conditioner also includes: second controls parts 8, is arranged on described first pipeline
On, for flowing through described second heat exchanger 6 and entering the coolant quantity of described gas-liquid separator 7 and carry out
Control；3rd controls parts 9, is arranged on described second pipe, for changing flowing through described second
The coolant quantity of hot device 6 the second air inlet of entering described compressor 1 is controlled.
First air inlet 12 of above-mentioned compressor 1 can be the low-pressure admission mouth of compressor 1, in pressure
When contracting machine 1 is pressed into QI KOU in having simultaneously, the coolant after the second heat exchanger 6 can be divided into
Two parts flow into compressor 1, i.e. second control parts 8 close, the 3rd control parts 9 open
Time, coolant enters the second air inlet 13 of compressor 1 (in compressor 1 by second pipe
It is pressed into QI KOU)；Controlling parts 8 second to open, when the 3rd control parts 9 are closed, coolant passes through
First pipeline returns to the first air inlet 12 of compressor 1 after entering gas-liquid separator 7.
The off-premises station of the air-conditioner of above-described embodiment, also includes: pressure transducer (does not shows in figure
Go out), it is arranged on described second and controls between parts 8 and the first air inlet 12 of described compressor 1
Pipeline on optional position.
By setting on the pipeline between the second control parts 8 and the first air inlet 12 of compressor 1
Put pressure transducer, enabling the pressure of compressor 1 first air inlet 12 is controlled, with
Guarantee the stability of system.
According to one embodiment of present invention, described first controls parts 5, described second control parts
8 and the described 3rd control parts 9 includes: electric expansion valve or electromagnetic valve.
Fig. 3 also show the structural representation of the off-premises station of the air-conditioner of another embodiment of the present invention.
Specifically, as it is shown on figure 3, the outdoor of air-conditioner according to still another embodiment of the invention
Machine, including: compressor 1；Cross valve 2, is connected to the air vent 11 of described compressor 1；Gas-liquid
Separator 7, is connected between described cross valve 2 and the first air inlet 12 of described compressor 1；
First Heat Exchanger 3, the first end of described First Heat Exchanger 3 is connected to described cross valve 2；Second changes
Hot device 6, the first end and second end of described second heat exchanger 6 are respectively connecting to described First Heat Exchanger
Second end of 3 and off-premises station stop valve 4, the 3rd end of described second heat exchanger 6 is by the first control
What parts 5 were connected between the second end and the described off-premises station stop valve 4 of described second heat exchanger 6 appoints
Meaning position, the 4th end of described second heat exchanger 6 is connected to described gas-liquid separator by the first pipeline
7, wherein, the first end of described second heat exchanger 6 and the second end of described second heat exchanger 6 are in institute
Stating the second internal connection of heat exchanger 6 is first flow, the 3rd end of described second heat exchanger 6 and described
It is the second runner that 4th end of the second heat exchanger 6 connects inside described second heat exchanger 6, described
One runner does not connects inside described second heat exchanger 6 with described second runner；And described first control
Parts 5 processed, for being controlled the coolant quantity flowing through described second heat exchanger 6.
By the first end of the second heat exchanger 6 and the second end being respectively connecting to the of First Heat Exchanger 3
Two ends and off-premises station stop valve 4, and by the 3rd end of the second heat exchanger 6 by the first control parts 5
It is connected to the optional position between the second end and the off-premises station stop valve 4 of the second heat exchanger 6, and by
4th end of two heat exchangers 6 is connected to gas-liquid separator 7, enabling flow at off-premises station coolant
Increase a branch road on major trunk roads and be returned directly to pressure by the second heat exchanger 6 after gas-liquid separator 7
Contracting machine 1, shortens coolant and returns to the time of compressor 1, thus when shortening the defrost of air-conditioner
Between；Meanwhile, branch road coolant returns in compressor 1 after being evaporated by the second heat exchanger 6, therefore,
In also being able to avoid compressor 1, liquid situation occurs back, enhance the security and stability of system.
The structure of the off-premises station of air-conditioner according to still a further embodiment as shown in Figure 4, institute
The 4th end stating the second heat exchanger 6 is connected to the second air inlet of described compressor 1 by second pipe
13；The off-premises station of described air-conditioner also includes: second controls parts 8, is arranged on described first pipeline
On, for flowing through described second heat exchanger 6 and entering the coolant quantity of described gas-liquid separator 7 and carry out
Control；3rd controls parts 9, is arranged on described second pipe, for changing flowing through described second
The coolant quantity of hot device 6 the second air inlet 13 of entering described compressor 1 is controlled.
First air inlet 12 of above-mentioned compressor 1 can be the low-pressure admission mouth of compressor 1, in pressure
When contracting machine 1 is pressed into QI KOU in having simultaneously, the coolant after the second heat exchanger 6 can be divided into
Two parts flow into compressor 1, i.e. second control parts 8 close, the 3rd control parts 9 open
Time, coolant enters the second air inlet 13 of compressor 1 (in compressor 1 by second pipe
It is pressed into QI KOU)；Controlling parts 8 second to open, when the 3rd control parts 9 are closed, coolant passes through
First pipeline returns to the first air inlet 12 of compressor 1 after entering gas-liquid separator 7.
The off-premises station of the air-conditioner of above-described embodiment, also includes: pressure transducer (does not shows in figure
Go out), it is arranged on described second and controls between parts 8 and the first air inlet 12 of described compressor 1
Pipeline on optional position.
By setting on the pipeline between the second control parts 8 and the first air inlet 12 of compressor 1
Put pressure transducer, enabling the pressure of compressor 1 first air inlet 12 is controlled, with
Guarantee the stability of system.
According to one embodiment of present invention, described first controls parts 5, described second control parts
8 and the described 3rd control parts 9 can also include: electric expansion valve or electromagnetic valve.
According to one embodiment of present invention, described second heat exchanger 6 includes: plate type heat exchanger or set
Pipe heat exchanger.
For the structure of the off-premises station of air-conditioner as shown in figures 1 and 3, the present invention proposes one
The control method of air-conditioner, the most as shown in Figure 5.
Fig. 5 shows the exemplary flow of the control method of air-conditioner according to an embodiment of the invention
Figure.
As it is shown in figure 5, the control method of air-conditioner according to an embodiment of the invention, including:
Step 502, it may be judged whether receive defrosting instruction；Step 504, receives described defrosting in judgement
During instruction, control described first control parts 5 and be in opening, to control to change through described first
Part coolant after hot device 3 is by being directly entered the of described compressor 1 after described second heat exchanger 6
One air inlet 12.
By when receiving defrosting instruction, control the first control parts 5 and be in opening so that
A branch road can be increased by the second heat exchanger 6 and gas-liquid on the major trunk roads that off-premises station coolant flows to
It is returned directly to compressor 1 after separator 7, shortens coolant and return to the time of compressor 1, thus
Shorten the defrost time of air-conditioner；Simultaneously as the coolant after First Heat Exchanger 3 is logical
Returning in compressor 1 after crossing the second heat exchanger 6, therefore, coolant can be entered by the second heat exchanger 6
Row evaporation, it is to avoid in compressor 1, liquid situation occurs back, enhance the security and stability of system.
For the structure of the off-premises station of air-conditioner as shown in Figure 2 and Figure 4, the present invention proposes another
Plant the control method of air-conditioner, the most as shown in Figure 6.
Fig. 6 shows the signal stream of the control method of air-conditioner according to another embodiment of the invention
Cheng Tu.
As shown in Figure 6, the control method of air-conditioner according to another embodiment of the invention, bag
Include: step 602, it may be judged whether receive defrosting instruction；Step 604, receives described in judgement
During defrosting instruction, control described first control parts 5 and described second control parts 8 are in unlatching shape
State, and control described 3rd control parts 9 be closed, with control by described second heat exchange
The coolant of device 6 enters the first air inlet 12 of described compressor 1 after described gas-liquid separator 7；
Step 606, obtains the force value that described pressure transducer detects；Step 608, passes at described pressure
When the force value that sensor detects reaches predetermined value, control described second control parts 8 and be in closedown shape
State, and control described first control parts 5 and described 3rd control parts 9 be in opening, with
Control to be entered the second air inlet 13 of described compressor 1 by the coolant of described second heat exchanger 6.
By when receiving defrosting instruction, control the first control parts 5 and be in opening so that
A branch road can be increased on the major trunk roads that off-premises station coolant flows to return to by after the second heat exchanger 6
Compressor 1 (is returned directly to the second air inlet 13 of compressor 1 or is returned to by gas-liquid separator 7
First air inlet 12 of compressor 1), shorten coolant and return to the time of compressor 1, thus contract
The short defrost time of air-conditioner；Meanwhile, branch road coolant is by returning to compression after the second heat exchanger 6
In machine 1, therefore, coolant can be evaporated by the second heat exchanger 6, it is to avoid occurs in compressor 1
Return liquid situation, enhance the security and stability of system.
Wherein, the first air inlet 12 of compressor 1 can be low-pressure admission mouth, the second air inlet 13
It is pressed into QI KOU in can being, and by when receiving defrosting instruction, first controls the first control parts 5
It is in opening with the second control parts 8 and control the 3rd control parts 9 are closed, make
Obtain coolant and can first pass through low-pressure admission mouth return compressor 1, and low pressure detected at pressure transducer
When the pressure of entrance reaches certain value, control the first control parts 5 and the 3rd control parts 9 are in out
Open state and control the second control parts 8 are closed, return so that coolant is pressed into QI KOU in passing through
Return compressor 1, and then guarantee the stability of compressor 1 internal pressure.
Technical scheme being described in detail above in association with accompanying drawing, the present invention proposes a kind of new
The outdoor unit structure of air-conditioner and corresponding control method, it is possible to before shortening the air-conditioner defrost time
Put, it is to avoid the situation of liquid occurs back in compressor, it is ensured that security of system is reliable.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (8)
1. the off-premises station of an air-conditioner, it is characterised in that including:
Compressor；
Cross valve, is connected to the air vent of described compressor；
First Heat Exchanger, is connected between described cross valve and off-premises station stop valve；
Gas-liquid separator, is connected between described cross valve and the first air inlet of described compressor；
Second heat exchanger, the first end of described second heat exchanger is connected to described gas-liquid by the first pipeline
Separator；And
First control parts, described first control parts the first end be connected to described First Heat Exchanger with
Optional position between described off-premises station stop valve, the described first the second end controlling parts is connected to institute
State the second end of the second heat exchanger, for the coolant quantity flowing through described second heat exchanger is controlled；
First end of described second heat exchanger is connected to the second air inlet of described compressor by second pipe
Mouthful；
The off-premises station of described air-conditioner also includes:
Second controls parts, is arranged on described first pipeline, for flowing through described second heat exchanger
And the coolant quantity entering described gas-liquid separator is controlled；
3rd controls parts, is arranged on described second pipe, for flowing through described second heat exchanger
And the coolant quantity entering the second air inlet of described compressor is controlled.
The off-premises station of air-conditioner the most according to claim 1, it is characterised in that also include:
Pressure transducer, be arranged on described second control parts and described compressor the first air inlet it
Between pipeline on optional position.
The off-premises station of air-conditioner the most according to claim 1 and 2, it is characterised in that described
First controls parts, described second control parts and described 3rd control parts includes:
Electric expansion valve or electromagnetic valve.
4. the off-premises station of an air-conditioner, it is characterised in that including:
Compressor；
Cross valve, is connected to the air vent of described compressor；
Gas-liquid separator, is connected between described cross valve and the first air inlet of described compressor；
First Heat Exchanger, the first end of described First Heat Exchanger is connected to described cross valve；
Second heat exchanger, the first end and second end of described second heat exchanger are respectively connecting to described first
Second end of heat exchanger and off-premises station stop valve, the 3rd end of described second heat exchanger is by the first control
Parts are connected to any position between the second end of described second heat exchanger and described off-premises station stop valve
Putting, the 4th end of described second heat exchanger is connected to described gas-liquid separator by the first pipeline, its
In, the first end of described second heat exchanger and the second end of described second heat exchanger are in described second heat exchange
The internal connection of device is first flow, the of the 3rd end of described second heat exchanger and described second heat exchanger
It is the second runner that four ends connect inside described second heat exchanger, described first flow and described second
Road does not connects inside described second heat exchanger；And
Described first controls parts, for being controlled the coolant quantity flowing through described second heat exchanger.
The off-premises station of air-conditioner the most according to claim 4, it is characterised in that described second
4th end of heat exchanger is connected to the second air inlet of described compressor by second pipe；
The off-premises station of described air-conditioner also includes:
Second controls parts, is arranged on described first pipeline, for flowing through described second heat exchanger
And the coolant quantity entering described gas-liquid separator is controlled；
3rd controls parts, is arranged on described second pipe, for flowing through described second heat exchanger
And the coolant quantity entering the second air inlet of described compressor is controlled.
The off-premises station of air-conditioner the most according to claim 5, it is characterised in that also include:
Pressure transducer, be arranged on described second control parts and described compressor the first air inlet it
Between pipeline on optional position.
7., according to the off-premises station of the air-conditioner according to any one of claim 4 to 6, its feature exists
In, described second heat exchanger includes:
Plate type heat exchanger or double pipe heat exchanger.
8. the control method of an air-conditioner, it is characterised in that for such as claim 2 or 6
The off-premises station of described air-conditioner is controlled, and the control method of described air-conditioner includes:
Judge whether to receive defrosting instruction；
When judging to receive described defrosting instruction, control described first and control parts and described second control
Parts processed are in opening, and control the described 3rd and control parts and be closed, logical to control
Cross the coolant of described second heat exchanger after described gas-liquid separator, to enter the first of described compressor enter
QI KOU；
Obtain the force value that described pressure transducer detects；
When the force value that described pressure transducer detects reaches predetermined value, control described second and control
Parts are closed, and control described first control parts and described 3rd control parts be in out
Open state, to control to be entered the second air inlet of described compressor by the coolant of described second heat exchanger
Mouthful.
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| CN201410289024.3A CN104019595B (en) | 2014-06-24 | 2014-06-24 | The off-premises station of air-conditioner and the control method of air-conditioner |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6325471A (en) * | 1986-07-17 | 1988-02-02 | 三菱電機株式会社 | Air conditioner |
| JPH0237265A (en) * | 1988-07-28 | 1990-02-07 | Matsushita Electric Ind Co Ltd | Heat pump type air conditioner |
| JP2005233551A (en) * | 2004-02-20 | 2005-09-02 | Mitsubishi Electric Corp | Refrigeration cycle device |
| JP4459776B2 (en) * | 2004-10-18 | 2010-04-28 | 三菱電機株式会社 | Heat pump device and outdoor unit of heat pump device |
| CN101706132A (en) * | 2009-11-20 | 2010-05-12 | 海信科龙电器股份有限公司 | Air conditioner |
| CN203454503U (en) * | 2013-07-09 | 2014-02-26 | 广东美的暖通设备有限公司 | Air conditioner |
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