CN108895730A - A kind of air-conditioner throttling mechanism and air conditioner, air-conditioner throttling control method and device - Google Patents
A kind of air-conditioner throttling mechanism and air conditioner, air-conditioner throttling control method and device Download PDFInfo
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- CN108895730A CN108895730A CN201810946294.5A CN201810946294A CN108895730A CN 108895730 A CN108895730 A CN 108895730A CN 201810946294 A CN201810946294 A CN 201810946294A CN 108895730 A CN108895730 A CN 108895730A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000003507 refrigerant Substances 0.000 claims abstract description 56
- 238000004378 air conditioning Methods 0.000 claims abstract description 24
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 12
- 230000007423 decrease Effects 0.000 description 7
- 230000033228 biological regulation Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 101150064138 MAP1 gene Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air-conditioner throttling mechanism and air conditioners, air-conditioner throttling control method and device, the air-conditioner throttling mechanism, it includes capillary and threeway by-passing valve, the refrigerant inlet piping connection after the capillary is connected with the threeway by-passing valve, with evaporator；The third flow channel mouth of the threeway by-passing valve is connect with air-conditioning low-pressure side.Air-conditioner throttling mechanism of the present invention, under high temperature limit operating condition or high frequency, when the case where appearance is unable to improve delivery temperature, the inlet port of refrigerant in threeway by-passing valve is connected with third flow channel mouth, the refrigerant for entering threeway by-passing valve is introduced directly into the low-pressure side of air-conditioning, to prevent the safety and reliability for being unable to improve influence system because of delivery temperature.
Description
Technical field
The present invention relates to air-conditioner throttling technical field, in particular to a kind of air-conditioner throttling mechanism and air conditioner, air-conditioner throttling
Control method and device.
Background technique
What the throttling of domestic air-conditioning system generallyd use is that capillary 3 or electric expansion valve carry out throttling control, to frequency conversion
Air-conditioning system, 3 system adjustable range of capillary is limited, electronic expansion valve system, in satisfaction under the basis of the best aperture of low frequency,
Under high temperature limit operating condition or high frequency, electric expansion valve is often opened to the maximum, and affects the adjustable range of electric expansion valve.
In addition, under high temperature limit operating condition or high frequency, it may appear that the case where being unable to improve delivery temperature influences the peace of system
Full property and reliability.
Summary of the invention
In view of this, the present invention is directed to propose a kind of air-conditioner throttling mechanism, will appear with solution and is unable to improve delivery temperature
The case where, the problem of influencing the safety and reliability of system.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of air-conditioner throttling mechanism comprising capillary and threeway by-passing valve, the capillary and the threeway by-passing valve
Refrigerant inlet piping connection after series connection, with evaporator；The third flow channel mouth and air-conditioning low-pressure side of the threeway by-passing valve connect
It connects.
It further, further include electromagnetic expanding valve, after the capillary is connected with the threeway by-passing valve, with the electromagnetism
Expansion valve is in parallel.
It further, further include solenoid valve, the solenoid valve is connected with the capillary.
Further, the threeway by-passing valve and the capillary are set gradually along the flow direction of refrigerant.
Further, the capillary and the threeway by-passing valve are set gradually along the flow direction of refrigerant.
Further, the threeway by-passing valve is (for triple valve.
Further, the triple valve is flow divider.
Further, the triple valve is three-way solenoid valve
Further, the third flow channel mouth of the threeway by-passing valve is connected to gas-liquid separator.
Compared with the existing technology, air-conditioner throttling mechanism of the present invention has the advantage that：
(1) air-conditioner throttling mechanism of the present invention occurs being unable to improve exhaust temperature under high temperature limit operating condition or high frequency
When the case where spending, the inlet port of the refrigerant in threeway by-passing valve is connected with third flow channel mouth, will enter the system of threeway by-passing valve
Cryogen is introduced directly into the low-pressure side of air-conditioning, to prevent because of the safety for being unable to improve influence system of delivery temperature and reliable
Property.
(2) air-conditioner throttling mechanism of the present invention in turn ensures degree of regulation in this way, both increasing adjustable range.
Another object of the present invention is to propose a kind of air conditioner, to solve to will appear the feelings for being unable to improve delivery temperature
Condition, the problem of influencing the safety and reliability of system.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of air conditioner comprising air-conditioner throttling mechanism described above.
Possessed advantage is identical compared with the existing technology with above-mentioned air-conditioner throttling mechanism for the air conditioner, no longer superfluous herein
It states.
Another object of the present invention is to propose a kind of air-conditioner throttling control method, to solve will appear to be unable to improve exhaust
The case where temperature, the problem of influencing the safety and reliability of system.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of air-conditioner throttling control method based on the air-conditioner throttling mechanism comprising：
Step a obtains the delivery temperature and electronic expansion valve opening of air-conditioning in real time；
Step b is not more than the first temperature threshold in the delivery temperature and the electronic expansion valve opening is greater than first and opens
When spending threshold value, solenoid valve open signal is issued, to open the solenoid valve；
Step c issues the solenoid valve open signal when the delivery temperature is greater than first temperature threshold；
Step d issues the first switching signal when the delivery temperature is more than or equal to second temperature threshold value, will be described
The third flow channel mouth of threeway by-passing valve is connected.
Further, further include：
Step e when the delivery temperature is less than third temperature threshold in continuous time period, issues the second switching signal,
The third flow channel mouth of the threeway by-passing valve to be disconnected；
Step f, the delivery temperature is less than the 4th temperature threshold and the electric expansion valve in the continuous time period
When aperture is less than the second aperture threshold value, solenoid valve shutdown signal is issued, to close the solenoid valve.
Further, the first aperture threshold value is greater than the second aperture threshold value.
Further, the third temperature threshold is less than the second temperature threshold value.
Possessed advantage is identical compared with the existing technology with above-mentioned air-conditioner throttling mechanism for the air-conditioner throttling control method,
Details are not described herein.
Another object of the present invention is to propose a kind of air-conditioner throttling control device, to solve will appear to be unable to improve exhaust
The case where temperature, the problem of influencing the safety and reliability of system.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of air-conditioner throttling control device corresponding with the described air-conditioner throttling control method comprising：
Data acquisition module, for obtaining the delivery temperature and electronic expansion valve opening of air-conditioning in real time；
First control module, for being not more than the first temperature threshold and the electronic expansion valve opening in the delivery temperature
When greater than the first aperture threshold value, solenoid valve open signal is issued, to open the solenoid valve；
Second control module, for issuing the solenoid valve when the delivery temperature is greater than first temperature threshold
Open signal；
Third control module, for when the delivery temperature is more than or equal to second temperature threshold value, issuing the first switching letter
Number, the third flow channel mouth of the threeway by-passing valve is connected.
Further, further include：
4th control module, for issuing the when the delivery temperature is less than third temperature threshold in continuous time period
Two switching signals disconnect the third flow channel mouth of the threeway by-passing valve；
5th control module, in the continuous time period delivery temperature less than the 4th temperature threshold and described
When electronic expansion valve opening is less than the second aperture threshold value, solenoid valve shutdown signal is issued, to close the solenoid valve.
The air-conditioner throttling control device and above-mentioned air-conditioner throttling control method compared with the existing technology possessed by advantage
Identical, details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of air-conditioner throttling mechanism of the present invention；
Fig. 2 is the enlarged drawing of corresponding part in air-conditioner throttling mechanism map 1 of the present invention；
Fig. 3 is the schematic enlarged-scale view of air-conditioner throttling mechanism embodiment 4 of the present invention；
Fig. 4 is the first pass figure of air-conditioner throttling control method of the present invention；
Fig. 5 is the second flow chart of air-conditioner throttling control method of the present invention；
Fig. 6 is the first structure block diagram of air-conditioner throttling control device of the present invention；
Fig. 7 is the second structural block diagram of air-conditioner throttling control device of the present invention.
Description of symbols：
11- data acquisition module, the first control module of 12-, the second control module of 13-, 14- third control module, 15-
Four control modules, the 5th control module of 16-, 2- threeway by-passing valve, 3- capillary, 4- solenoid valve, 5- electromagnetic expanding valve, 6- evaporation
Device, 7- condenser, 8- gas-liquid separator, 9- compressor.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In addition, the threeway by-passing valve being previously mentioned in an embodiment of the present invention, referring to tool, there are three runner mouths for side
Logical valve.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment 1
As depicted in figs. 1 and 2, a kind of air-conditioner throttling mechanism, including capillary 3 and threeway by-passing valve 2, the capillary 3
Refrigerant inlet piping connection after connecting with the threeway by-passing valve 2, with evaporator 6；The third stream of the threeway by-passing valve 2
Road junction is connect with air-conditioning low-pressure side.
In this way, one end is connected to (in communication line with condenser 7 after the capillary 3 is connected with the threeway by-passing valve 2
The elements such as valve may be additionally provided with), the input terminal as refrigerant；The refrigerant inlet pipeline of the other end and evaporator 6 connects
It connects, as the output end of refrigerant, evaporator 6 is transmitted to after refrigerant is exported；When normal operating conditions, threeway by-passing valve 2
In be connected with 3 concatenated two ports of capillary, by 3 pairs of capillary enter evaporators 6 refrigerant throttle；In high temperature
Under limiting condition or high frequency, when there is the case where being unable to improve delivery temperature, the inlet port of the refrigerant in threeway by-passing valve 2 with
The refrigerant for entering threeway by-passing valve 2 is introduced directly into the low-pressure side of air-conditioning by the conducting of third flow channel mouth, to prevent because of exhaust temperature
The safety and reliability for being unable to improve influence system of degree.
Embodiment 2
Air-conditioner throttling mechanism as described above, the present embodiment is different from place and is, as shown in Figure 1, Figure 2, institute
Stating air-conditioner throttling mechanism further includes electromagnetic expanding valve 5, after the capillary 3 is connected with the threeway by-passing valve 2, with the electromagnetism
Expansion valve 5 is in parallel.
In this way, one end of electromagnetic expanding valve 5 is connected to condenser 7 (may be additionally provided with the members such as valve in communication line
Part), the input terminal as refrigerant；The refrigerant inlet piping connection of the other end and evaporator 6, the output as refrigerant
End, is transmitted to evaporator 6 after refrigerant is exported；In middle low frequency, individually opens 5 pairs of electromagnetic expanding valve and enter evaporator 6
Refrigerant throttles；It is carried out in high frequency, while using the refrigerant that electromagnetic expanding valve 5 and 3 pairs of capillary enter evaporator 6
Throttling, due to the parallel-connection structure of capillary 3 and electromagnetic expanding valve 5, can on the basis of 5 maximum opening of electromagnetic expanding valve, into
One step increases adjustable range；And after capillary 3 is opened, the corresponding refrigerant circulation of aperture for being equivalent to electromagnetic expanding valve 5 increases
Added relatively-stationary value (the relatively-stationary value is the circulation of capillary 3, although capillary 3 itself with adjustment effect,
But the adjustment effect of capillary 3 is smaller when high frequency, therefore, it is considered that being relatively-stationary value), specific adjust still is expanded by electromagnetism
Valve 5 is completed, in this way, both increasing adjustable range, in turn ensures degree of regulation.
In addition, being saved in high frequency, while using electromagnetic expanding valve 5 and 3 pairs of the capillary refrigerants for entering evaporator 6
Stream, when there is the case where being unable to improve delivery temperature, inlet port and the third flow channel mouth of the refrigerant in threeway by-passing valve 2 are led
It is logical, the refrigerant that enter threeway by-passing valve 2 will be introduced directly into the low-pressure side of air-conditioning, plays the role of liquid bypass, thus prevent because
The safety and reliability for being unable to improve influence system of delivery temperature.
Embodiment 3
Air-conditioner throttling mechanism as described above, the present embodiment is different from place and is, as shown in Figure 1, Figure 2, institute
Stating air-conditioner throttling mechanism further includes solenoid valve 4, and the solenoid valve 4 is connected with the capillary 3.
In this way, the solenoid valve 4 connect with the capillary 3, the threeway by-passing valve 2 after with the electromagnetic expanding valve 5
It is in parallel.By the on-off of solenoid valve 4, the refrigeration whether capillary 3 accesses between condenser 7 and evaporator 6 can control
In agent transfer passage, throttling control is carried out to refrigerant.
In this way, solenoid valve 4 is closed when electric expansion valve is not in maximum opening, only electronic expansion valve regulation is controlled；When
After detecting that electronic expansion valve opening is in maximum opening always, solenoid valve 4 is opened, and increases adjustable range.
The original state of the solenoid valve 4 is in off state (disconnection), in this way, being not in maximum opening in electric expansion valve
When, without operating the solenoid valve 4, after detecting that electronic expansion valve opening is in maximum opening always, just need to operate
The solenoid valve 4 is opened；It is simple and convenient.
Embodiment 4
Air-conditioner throttling mechanism as described above, the present embodiment is different from place and is, as shown in figure 3, the threeway
By-passing valve 2 and the capillary 3 are set gradually along the flow direction of refrigerant, in this way, in normal operating conditions, refrigerant stream
The capillary 3 is again passed through after crossing threeway by-passing valve 2, capillary 3 carries out throttling control to refrigerant；In high temperature limit operating condition
Or under high frequency, when there is the case where being unable to improve delivery temperature, the inlet port and third flow channel of the refrigerant in threeway by-passing valve 2
Mouth conducting will be introduced directly into the low-pressure side of air-conditioning into the refrigerant of threeway by-passing valve 2, and be no longer pass through capillary 3, so as to
Avoid the safety and reliability for being unable to improve influence system because of delivery temperature；It is highly-safe, good reliability.
Embodiment 5
Air-conditioner throttling mechanism as described above, the present embodiment is different from place and is, as shown in Figure 1, Figure 2, institute
It states capillary 3 and the threeway by-passing valve 2 is set gradually along the flow direction of refrigerant, in this way, in normal operating conditions, system
Cryogen again passes through the threeway by-passing valve 2 after flowing through the capillary 3, and capillary 3 carries out throttling control to refrigerant；In height
Under warm limiting condition or high frequency, when there is the case where being unable to improve delivery temperature, the inlet port of the refrigerant in threeway by-passing valve 2
It is connected with third flow channel mouth, the refrigerant for entering threeway by-passing valve 2 is introduced directly into the low-pressure side of air-conditioning, at this point, refrigerant passes through
After crossing capillary 3, air-conditioning low-pressure side is entered by threeway by-passing valve 2, so as to avoid being unable to improve shadow because of delivery temperature
The safety and reliability of acoustic system；If refrigerant is directly entered threeway by-passing valve 2 without capillary 3, in threeway
After the inlet port of the refrigerant of by-passing valve 2 is connected with third flow channel mouth, the inlet port of refrigerant is the high-pressure side of air-conditioning, third stream
Road junction is connected to the low-pressure side of air-conditioning, and refrigerant is directly entered low-pressure side from high-pressure side, can generate a large amount of quick flow effects, not only
It will cause a large amount of inefficient cycles of refrigerant, it is also possible to cause security risk；In the present embodiment, by being entered back into after capillary 3
Threeway by-passing valve 2 then can play the effect for preventing largely quickly flowing by the throttling action of capillary 3, avoid safety hidden
Suffer from.
Embodiment 6
Air-conditioner throttling mechanism as described above, the present embodiment is different from place and is, as shown in Figure 1, Figure 2, institute
Stating threeway by-passing valve 2 is triple valve；In this way, the flow direction of refrigerant can be changed by triple valve, to realize that liquid bypasses.
There are three runner mouths for the threeway by-passing valve 2 tool, wherein first-class road junction and second road junction is used for and capillary
3 series connection；Third flow channel mouth with the low-pressure side of air-conditioning for connecting.
Preferably, the triple valve is flow divider, there is a fluid inlet (first-class road junction or second road junction)
With two fluid outlets (second road junction or first-class road junction and third flow channel mouth)；Refrigerant shunted in triple valve after from
Two fluid outlet outflows.
When in use, the first-class road junction and second road junction are normally opened, the first-class road junction/second road junction
It is normally closed with the third flow channel mouth；In this way, when there is the case where being unable to improve delivery temperature, the first-class road junction/described
Second road junction (inlet port of the refrigerant in threeway by-passing valve 2) is connected with third flow channel mouth, will enter threeway by-passing valve 2
Refrigerant is introduced directly into the low-pressure side of air-conditioning；It is seldom due to there is the case where being unable to improve delivery temperature, so described first-class
The normally opened setting in road junction and second road junction can make the operation of the execution to threeway by-passing valve 2 less, save time and essence
Power.
Preferably, the triple valve is three-way solenoid valve, in this way, control is more convenient, and due to the first-class road junction
Normally opened with second road junction, such state does not need the power control of three-way solenoid valve, saves electricity and control time.
The present invention is connected in parallel after being connected by capillary 3 with solenoid valve 4 with electric expansion valve, increases the adjusting of throttling
Range, while the advantage of the two has been played, it avoids limiting condition from adjusting since electronic expansion valve regulation is limited, protection is caused to stop
Machine.
Embodiment 7
Air-conditioner throttling mechanism as described above, the present embodiment is different from place and is, as shown in Figure 1, Figure 2, institute
The third flow channel mouth for stating threeway by-passing valve 2 is connected to gas-liquid separator 8.
In this way, when there is the case where being unable to improve delivery temperature, the inlet port of the refrigerant in threeway by-passing valve 2 and
The conducting of three runner mouths, the refrigerant for entering threeway by-passing valve 2 is introduced directly into the gas-liquid separator 8 of air-conditioning, and by described
Gas-liquid separator 8 is recycled after entering compressor 9.
In this way, the liquid refrigerant for entering low-pressure side and gaseous refrigerant are separated, so by gas-liquid separator 8
It inputs in compressor 9 afterwards, to avoid the case where carrying out second compression again to liquid refrigerant, preventing invalid compression and can
The security risk of energy.
Embodiment 8
Air-conditioner throttling mechanism as described above, the present embodiment are different from place and are, are a kind of air conditioner comprising
Air-conditioner throttling mechanism described above.
Preferably, the air conditioner further includes the evaporator 6 and the condenser 7, the air-conditioner throttling mechanism setting
Between the evaporator 6 and the condenser 7, the refrigerant for flowing to evaporator 6 to condenser 7 carries out throttling control.
Embodiment 9
Air-conditioner throttling mechanism as described above, the present embodiment are different from place and are, as shown in figure 4, being a kind of sky
Method of flow control is adjusted, which is realized based on air-conditioner throttling mechanism described in any of the above-described embodiment.
Wherein, the air-conditioner throttling control method includes
Step a obtains the delivery temperature and electronic expansion valve opening of air-conditioning in real time；
Step b is not more than the first temperature threshold in the delivery temperature and the electronic expansion valve opening is greater than first and opens
When spending threshold value, solenoid valve open signal is issued, to open the solenoid valve 4；
Step c issues the solenoid valve open signal when the delivery temperature is greater than first temperature threshold；
Step d issues the first switching signal when the delivery temperature is more than or equal to second temperature threshold value, will be described
The third flow channel mouth of threeway by-passing valve 2 is connected.
Wherein, the second temperature threshold value is greater than first temperature threshold.
In this way, solenoid valve 4 is closed when electronic expansion valve opening is not in maximum opening, only electronic expansion valve regulation is controlled；
After electronic expansion valve opening is in maximum opening always, solenoid valve 4 is opened, and increases adjustable range；If solenoid valve 4 is opened
Afterwards, delivery temperature switches refrigerant direction by threeway by-passing valve 2, liquid bypass action is played, so that control system without improvement
Securely and reliably.In addition, by detection electric expansion valve valve step state (electronic expansion valve opening), to determine the unlatching of solenoid valve 4
Condition, so that being more bonded actual use situation to the unlatching of solenoid valve 4, unlatching is more accurate, in time.
Embodiment 10
Air-conditioner throttling control method as described above, the present embodiment are different from place and are, first temperature threshold
The value range of value is 90 DEG C -100 DEG C.In this way, can prevent air conditioner from the case where anti-evil condition ability decline occur, to prevent
There is protection to shut down.
Preferably, first temperature threshold is 95 DEG C.In this way, air conditioner can be further prevented anti-evil condition ability occur
The case where decline, shuts down to prevent protection.
Preferably, the second temperature threshold value is 105 DEG C.In this way, air conditioner can be further prevented anti-evil condition energy occur
The case where power declines is shut down to prevent protection.
Wherein, the value range of the first aperture threshold value is 450P-460P.In this way, can prevent air conditioner from resisting
The case where disliking the decline of condition ability is shut down to prevent protection.
Preferably, the first aperture threshold value is 460P.In this way, air conditioner can be further prevented anti-evil condition ability occur
The case where decline, shuts down to prevent protection.
Embodiment 11
Air-conditioner throttling control method as described above, the present embodiment is different from place and is, as shown in figure 5, described
Air-conditioner throttling control method further includes：
Step e when the delivery temperature is less than third temperature threshold in continuous time period, issues the second switching signal,
The third flow channel mouth of the threeway by-passing valve 2 to be disconnected；
Step f, the delivery temperature is less than the 4th temperature threshold and the electric expansion valve in the continuous time period
When aperture is less than the second aperture threshold value, solenoid valve shutdown signal is issued, to close the solenoid valve 4.
In this way, after reducing delivery temperature, can eliminate delivery temperature the safety for being unable to improve influence system and can
After the hidden danger of property, the third flow channel mouth and the solenoid valve 4 of the threeway by-passing valve 2 are disconnected in time, to prevent from persistently opening
It opens solenoid valve 4 and conducting third flow channel mouth bring loss of refrigerant and throttling precision is insufficient.
Wherein, the first aperture threshold value is greater than the second aperture threshold value, in this way, when judging, being not in
Same electronic expansion valve opening triggers the case where different control signals, prevents control antinomy, and control is caused to be failed.
Wherein, the third temperature threshold is less than the second temperature threshold value, in this way, when judging, being not in
Same delivery temperature triggers the case where different control signals, prevents control antinomy, and control is caused to be failed.
Wherein, the 4th temperature threshold is less than first temperature threshold, in this way, when judging, being not in
Same delivery temperature triggers the case where different control signals, prevents control antinomy, and control is caused to be failed.
Embodiment 12
Air-conditioner throttling control method as described above, the present embodiment are different from place and are, the second aperture threshold
Value is 420P.In this way, can prevent air conditioner from the case where anti-evil condition ability decline occur, shut down to prevent protection；And
The solenoid valve 4 can be disconnected in time.
Wherein, the third temperature threshold is 98 DEG C, in this way, can prevent air conditioner from the feelings of anti-evil condition ability decline occur
Condition is shut down to prevent protection；And the third flow channel mouth of the threeway by-passing valve 2 can be disconnected in time.
Wherein, the 4th temperature threshold is 90 DEG C.In this way, can prevent air conditioner from the feelings of anti-evil condition ability decline occur
Condition is shut down to prevent protection；And the solenoid valve 4 can be disconnected in time.
Preferably, the continuous time period is 10s, in this way, can make the accuracy of judgement to the real-time status of air conditioner, is prevented
Only since the jump of delivery temperature causes the maloperation to threeway by-passing valve 2 and solenoid valve 4.
Preferably, the original state of the solenoid valve 4 is in off state (disconnection), in this way, being not in electric expansion valve
When maximum opening, without operating the solenoid valve 4, after detecting that electronic expansion valve opening is in maximum opening always,
It needs to operate the solenoid valve 4 to open；It is simple and convenient.
Preferably, the original state of the third flow channel mouth of the threeway by-passing valve 2 is to disconnect, in this way, in this way, in institute
It states when delivery temperature is not up to second temperature threshold value (when the situation is uses the case where probability of occurrence highest), without described in operation
Threeway by-passing valve 2 just needs to operate the solenoid valve 4 and opens after delivery temperature exceeds second threshold temperature；Simple side
Just.
Embodiment 13
Air-conditioner throttling control method as described above, the present embodiment are different from place and are, the air-conditioner throttling control
Method processed further includes：Period first time is set, and repeats step b- step d within each period first time；In this way,
It does not need to be repeated several times and executes step b- step d, it is only necessary to be repeated within each period once, can guarantee sky
Stream is adjusted while be normally carried out, eliminate it is extra repeat situation, greatly reduce the system resource of occupancy, raising executes speed
Degree.
Preferably, setting second time period, and step e- step f is repeated in each second time period；This
Sample does not need that execution step e- step f is repeated several times, it is only necessary to repeat once, can protect within each period
Card air-conditioner throttling is while be normally carried out, eliminate it is extra repeat situation, greatly reduce the system resource of occupancy, raising is held
Scanning frequency degree.
Embodiment 14
Air-conditioner throttling control method as described above, the present embodiment are different from place and are, are corresponding sky
Flow control device is adjusted, as shown in fig. 6, the air-conditioner throttling control device, including：
Data acquisition module 11, for obtaining the delivery temperature and electronic expansion valve opening of air-conditioning in real time；
First control module 12, for the delivery temperature is no more than the first temperature threshold and the electric expansion valve is opened
When degree is greater than the first aperture threshold value, solenoid valve open signal is issued, to open the solenoid valve 4；
Second control module 13, for issuing the electromagnetism when the delivery temperature is greater than first temperature threshold
Valve open signal；
Third control module 14, for issuing the first switching when the delivery temperature is more than or equal to second temperature threshold value
The third flow channel mouth of the threeway by-passing valve 2 is connected signal.
Wherein, the second temperature threshold value is greater than first temperature threshold.
In this way, solenoid valve 4 is closed when electronic expansion valve opening is not in maximum opening, only electronic expansion valve regulation is controlled；
After electronic expansion valve opening is in maximum opening always, solenoid valve 4 is opened, and increases adjustable range；If solenoid valve 4 is opened
Afterwards, delivery temperature switches refrigerant direction by threeway by-passing valve 2, liquid bypass action is played, so that control system without improvement
Securely and reliably.In addition, by detection electric expansion valve valve step state (electronic expansion valve opening), to determine the unlatching of solenoid valve 4
Condition, so that being more bonded actual use situation to the unlatching of solenoid valve 4, unlatching is more accurate, in time.
Embodiment 15
Air-conditioner throttling control device as described above, the present embodiment is different from place and is, as shown in fig. 7, described
Air-conditioner throttling control device further includes：
4th control module 15, for issuing when the delivery temperature is less than third temperature threshold in continuous time period
Second switching signal disconnects the third flow channel mouth of the threeway by-passing valve 2；
5th control module 16, in the continuous time period delivery temperature less than the 4th temperature threshold and institute
When stating electronic expansion valve opening less than the second aperture threshold value, solenoid valve shutdown signal is issued, to close the solenoid valve 4.
In this way, after reducing delivery temperature, can eliminate delivery temperature the safety for being unable to improve influence system and can
After the hidden danger of property, the third flow channel mouth and the solenoid valve 4 of the threeway by-passing valve 2 are disconnected in time, to prevent from persistently opening
It opens solenoid valve 4 and conducting third flow channel mouth bring loss of refrigerant and throttling precision is insufficient.
Wherein, the first aperture threshold value is greater than the second aperture threshold value, in this way, when judging, being not in
Same electronic expansion valve opening triggers the case where different control signals, prevents control antinomy, and control is caused to be failed.
Wherein, the third temperature threshold is less than the second temperature threshold value, in this way, when judging, being not in
Same delivery temperature triggers the case where different control signals, prevents control antinomy, and control is caused to be failed.
Wherein, the 4th temperature threshold is less than first temperature threshold, in this way, when judging, being not in
Same delivery temperature triggers the case where different control signals, prevents control antinomy, and control is caused to be failed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of air-conditioner throttling mechanism, which is characterized in that including capillary (3) and threeway by-passing valve (2), the capillary (3)
Refrigerant inlet piping connection after connecting with the threeway by-passing valve (2), with evaporator (6)；The threeway by-passing valve (2)
Third flow channel mouth is connect with air-conditioning low-pressure side.
2. air-conditioner throttling mechanism according to claim 1, which is characterized in that further include electromagnetic expanding valve (5), the capillary
It is in parallel with the electromagnetic expanding valve (5) after pipe (3) is connected with the threeway by-passing valve (2).
3. air-conditioner throttling mechanism according to claim 2, which is characterized in that further include solenoid valve (4), the solenoid valve
(4) it connects with the capillary (3).
4. a kind of air conditioner, which is characterized in that including air-conditioner throttling mechanism as claimed in any one of claims 1-3.
5. a kind of air-conditioner throttling control method based on air-conditioner throttling mechanism as claimed in any one of claims 1-3, feature exist
In, including：
Step a obtains the delivery temperature and electronic expansion valve opening of air-conditioning in real time；
Step b is not more than the first temperature threshold in the delivery temperature and the electronic expansion valve opening is greater than the first aperture threshold
When value, solenoid valve open signal is issued, to open the solenoid valve (4)；
Step c issues the solenoid valve open signal when the delivery temperature is greater than first temperature threshold；
Step d issues the first switching signal, by the threeway when the delivery temperature is more than or equal to second temperature threshold value
The third flow channel mouth of by-passing valve (2) is connected.
6. air-conditioner throttling control method according to claim 5, which is characterized in that further include：
Step e when the delivery temperature is less than third temperature threshold in continuous time period, issues the second switching signal, will
The third flow channel mouth of the threeway by-passing valve (2) disconnects；
Step f, the delivery temperature is less than the 4th temperature threshold and the electronic expansion valve opening in the continuous time period
When less than the second aperture threshold value, solenoid valve shutdown signal is issued, to close the solenoid valve (4).
7. air-conditioner throttling control method according to claim 6, which is characterized in that the first aperture threshold value is greater than described
Second aperture threshold value.
8. air-conditioner throttling control method according to claim 6 or 7, which is characterized in that the third temperature threshold is less than
The second temperature threshold value.
9. a kind of air-conditioner throttling control device corresponding with the air-conditioner throttling control method any in claim 5-8,
It is characterized in that, including：
Data acquisition module (11), for obtaining the delivery temperature and electronic expansion valve opening of air-conditioning in real time；
First control module (12), for being not more than the first temperature threshold and the electronic expansion valve opening in the delivery temperature
When greater than the first aperture threshold value, solenoid valve open signal is issued, to open the solenoid valve (4)；
Second control module (13), for issuing the solenoid valve when the delivery temperature is greater than first temperature threshold
Open signal；
Third control module (14), for when the delivery temperature is more than or equal to second temperature threshold value, issuing the first switching letter
Number, the third flow channel mouth of the threeway by-passing valve (2) is connected.
10. air-conditioner throttling control device according to claim 9, which is characterized in that further include：
4th control module (15), for issuing the when the delivery temperature is less than third temperature threshold in continuous time period
Two switching signals disconnect the third flow channel mouth of the threeway by-passing valve (2)；
5th control module (16), in the continuous time period delivery temperature less than the 4th temperature threshold and described
When electronic expansion valve opening is less than the second aperture threshold value, solenoid valve shutdown signal is issued, to close the solenoid valve (4).
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| CN201810946294.5A CN108895730B (en) | 2018-08-20 | 2018-08-20 | Air conditioner throttling mechanism, air conditioner and air conditioner throttling control method and device |
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| CN201810946294.5A CN108895730B (en) | 2018-08-20 | 2018-08-20 | Air conditioner throttling mechanism, air conditioner and air conditioner throttling control method and device |
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|---|---|
| CN108895730B (en) | 2024-02-06 |
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