CN103884127B - Air-conditioner with fixed frequency and control method thereof - Google Patents
Air-conditioner with fixed frequency and control method thereof Download PDFInfo
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- CN103884127B CN103884127B CN201410098781.2A CN201410098781A CN103884127B CN 103884127 B CN103884127 B CN 103884127B CN 201410098781 A CN201410098781 A CN 201410098781A CN 103884127 B CN103884127 B CN 103884127B
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Abstract
The open a kind of air-conditioner with fixed frequency of the present invention, including outdoor heat exchanger unit, indoor heat exchanger unit, cross valve, compressor unit and throttling unit.Described throttling unit includes that first throttle element, second section fluid element and electromagnetic valve, described first throttle element are connected between outdoor heat exchanger unit and indoor heat exchanger unit；Described second section fluid element and electromagnetic valve are connected between outdoor heat exchanger unit and indoor heat exchanger unit after being connected in series, and by opening and closing, described electromagnetic valve controls whether second section fluid element participates in throttling.Due to air-conditioner with fixed frequency of the present invention by electromagnetic valve be turned on and off control whether second section fluid element throttles to coolant, thus in defrost or control second section fluid element when supply voltage is relatively low by beating opens solenoid valve coolant is throttled, this shortens the defrost time or alleviates condensation load when supply voltage is relatively low when defrost, therefore improves the comfortableness of air-conditioner with fixed frequency.
Description
Technical field
The invention belongs to air-conditioning technical field, particularly relate to a kind of air-conditioner with fixed frequency and control method thereof.
Background technology
Air-conditioner with fixed frequency has market widely because price is relatively low at present, but when there is also defrost
Between long or occurs to start because voltage reduces when peak times of power consumption in summer or the feelings of frequent chaser
Condition, the comfortableness of the most existing air-conditioner with fixed frequency is poor.
Summary of the invention
It is an object of the invention to provide a kind of air-conditioner with fixed frequency and control method thereof, it is intended to improve fixed frequency empty
Adjust the comfortableness of device.
In order to realize the purpose of the present invention, the present invention provides a kind of air-conditioner with fixed frequency, including outdoor heat exchanger
Unit, indoor heat exchanger unit, cross valve, compressor unit and throttling unit, it is characterised in that
Described throttling unit includes first throttle element, second section fluid element and electromagnetic valve, described first throttle unit
Part is connected between outdoor heat exchanger unit and indoor heat exchanger unit；Described second section fluid element and electromagnetism
Valve is connected to after being connected in series between outdoor heat exchanger unit and indoor heat exchanger unit, and described electromagnetic valve leads to
Cross opening and closing to control whether second section fluid element participates in throttling.
Preferably, described first throttle element is throttling valve core, and described second section fluid element is capillary tube.
Preferably, described electromagnetic valve is opened when defrost and is made second section fluid element participate in throttling, described electricity
Magnet valve is closed at the end of defrost and is stoped second section fluid element to participate in throttling.
Preferably, described electromagnetic valve is opened when the supply voltage of air-conditioner with fixed frequency is less than setting value and is made the
Two restricting elements participate in throttling, and described electromagnetic valve is when the supply voltage of air-conditioner with fixed frequency is not less than setting value
Close and stop second section fluid element to participate in throttling.
Correspondingly, the present invention provides the control method of a kind of air-conditioner with fixed frequency, including:
S10, air-conditioner with fixed frequency, when switching to defrost pattern, makes electromagnetic valve remain turned-off and changes outside sensing chamber
The temperature of hot device unit.
S11, contrasts the temperature of the outdoor heat exchanger unit detected with opening design temperature, in inspection
The temperature of the outdoor heat exchanger unit measured, less than when opening design temperature, controls electromagnetic valve and opens；
S12, contrasts the temperature of the outdoor heat exchanger unit detected with closing design temperature, in inspection
The temperature of the outdoor heat exchanger unit measured, more than when closing design temperature, controls closed electromagnetic valve and terminates
Defrost and switch to heating mode.
Correspondingly, the present invention also provides for the control method of a kind of air-conditioner with fixed frequency, it is characterised in that including:
S20, after air-conditioner with fixed frequency starts, controls electromagnetic valve and opens and detect its operating current；
S21, contrasts the operating current of the air-conditioner with fixed frequency detected with setting electric current, is detecting
Air-conditioner with fixed frequency operating current less than set electric current time, control closed electromagnetic valve.
Preferably, in S20, being in particular, air-conditioner with fixed frequency detects it after starting the scheduled time again
Operating current.
Due to air-conditioner with fixed frequency of the present invention and control method by electromagnetic valve be turned on and off control second
Whether restricting element throttles to coolant, thus in defrost or relatively low at the supply voltage of air-conditioner with fixed frequency
Time control second section fluid element by beating opens solenoid valve coolant throttled, this shortens when defrost
Defrost time or alleviate condensation load when supply voltage is relatively low and ensure that air-conditioner with fixed frequency can be just
Often run, therefore improve the comfortableness of air-conditioner with fixed frequency.
Accompanying drawing explanation
Fig. 1 is the structural representation of air-conditioner with fixed frequency one preferred embodiment of the present invention；
Fig. 2 is the flow chart of the air-conditioner with fixed frequency of the present invention control method when defrost；
Fig. 3 is the flow chart of the air-conditioner with fixed frequency of the present invention control method when supply voltage is low.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Make further to retouch in detail to technical scheme of the present invention with specific embodiment below in conjunction with the accompanying drawings
State, so that those skilled in the art can be better understood from the present invention and can be practiced, but lifted real
Execute example not as a limitation of the invention.
Refer to Fig. 1, there is disclosed a preferred embodiment of air-conditioner with fixed frequency of the present invention, in the present embodiment,
Air-conditioner with fixed frequency includes outdoor heat exchanger unit 100, indoor heat exchanger unit 200, cross valve 300, pressure
Contracting machine unit 400 and throttling unit 500.
Described cross valve 300 respectively with outdoor heat exchanger unit 100, indoor heat exchanger unit 200 and compression
Machine unit 400 connects, thus forms the loop of coolant flowing, to realize determining frequency by the flowing of coolant
Air-conditioner cooling and warming, owing to the cooling and warming process of air-conditioner with fixed frequency is for those skilled in the art institute
Know, the no longer elaborate at this.
Described throttling unit 500 connects with outdoor heat exchanger unit 100 and indoor heat exchanger unit 200 respectively
Connecing, it has first throttle element 510, second section fluid element 520 and electromagnetic valve 530.In this enforcement
In example, first throttle element 510 is throttling valve core, and it is connected to outdoor heat exchanger unit 100 and indoor
Between heat exchanger unit 200.In the present embodiment, second section fluid element 520 is capillary tube, its two ends
Connect electromagnetic valve 530 and indoor heat exchanger unit 200 respectively, and electromagnetic valve 530 also with outdoor heat exchanger list
Unit 100 connects, and is turned on and off that to control second section fluid element 520 the most right by electromagnetic valve 530
Coolant throttles.Thus air-conditioner with fixed frequency of the present invention in defrost time, by opens solenoid valve 530
Control second section fluid element 520 to participate in coolant is throttled, thus increase refrigerant circulation flow, add
The fast defrost speed of outdoor heat exchanger unit 100, shorten the defrost time；Make a circulating cycle
In phase, heating capacity is improved, and the mean temperature of air-conditioner air outlet also raises, and the comfort level of user obtains
Bigger lifting.When peak times of power consumption in summer when the supply voltage of air-conditioner with fixed frequency is less than setting value,
Control second section fluid element 520 participate in coolant is throttled by opens solenoid valve 530, thus logical
Cross second section fluid element 520 to share a part of thermic load, which reduce the cold of air-conditioner with fixed frequency of the present invention
Coagulate load, reduce its delivery temperature and electric current, thus ensure that normally opening of air-conditioner with fixed frequency of the present invention
Move and reliability service.
Due to air-conditioner with fixed frequency of the present invention by electromagnetic valve 530 be turned on and off control second throttling unit
Whether part 520 participates in throttles to coolant, thus defrost or air-conditioner with fixed frequency supply voltage relatively
Control second section fluid element 520 participate in coolant is throttled by opens solenoid valve 530 time low, this
Shorten the defrost time when defrost or alleviate condensation load when supply voltage is relatively low and ensure that this
Bright air-conditioner with fixed frequency properly functioning, therefore improves the comfortableness of air-conditioner with fixed frequency of the present invention.
Refer to Fig. 2, the air-conditioner with fixed frequency of the present invention control method when defrost, including:
S10, air-conditioner with fixed frequency, when switching to defrost pattern, makes electromagnetic valve 530 remain turned-off and sensing chamber
The temperature of external heat exchanger unit 100.
S11, contrasts the temperature of the outdoor heat exchanger unit 100 detected with opening design temperature,
When the temperature of the outdoor heat exchanger unit 100 detected is less than unlatching design temperature, control electromagnetic valve 530
Open；
Specifically, in the present embodiment, open design temperature and be-5 DEG C, when the outdoor heat exchanger list detected
When the temperature of unit 100 is less than-5 DEG C, air-conditioner with fixed frequency controls electromagnetic valve 530 and opens.
S12, contrasts the temperature of the outdoor heat exchanger unit 100 detected with closing design temperature,
When the temperature of the outdoor heat exchanger unit 100 detected is more than closedown design temperature, control electromagnetic valve 530
Close and terminate defrost pattern and switch to heating mode；
Specifically, in the present embodiment, closing design temperature is 15 DEG C, when the outdoor heat exchanger detected
When the temperature of unit 100 is more than 15 DEG C, air-conditioner with fixed frequency controls electromagnetic valve 530 and closes.
Owing to air-conditioner with fixed frequency of the present invention is when switching to defrost pattern, owing to electromagnetic valve 530 cuts out,
Second section fluid element 520 is not involved in throttling, and compressor unit 400 rapidly will be from outdoor heat exchanger unit
Coolant in 100 sucks and compresses it into the coolant of High Temperature High Pressure, is then pressed into by the coolant of High Temperature High Pressure
Indoor heat exchanger unit 200 carries out condensation cooling, thus becomes the coolant of the middle temperature of high pressure, the middle temperature of high pressure
Coolant through first throttle element 510 laggard enter outdoor heat exchanger unit 100 and complete one and heat and follow
Ring.When the temperature of the outdoor heat exchanger unit 100 detected is less than when opening design temperature, due to electromagnetism
Valve 530 is opened, and now second section fluid element 520 and first throttle element 510 jointly throttle and make to determine frequency
The refrigerant circulation flow of air-conditioner increases, so that air-conditioner with fixed frequency is made in one heats cycle period
Heat is improved, thus accelerates the speed of outdoor heat exchanger unit 100 defrost, shortens outdoor
The time of heat exchanger unit 100 defrost, and then air-conditioner with fixed frequency of the present invention improves use when defrost pattern
The comfortableness at family.
Refer to Fig. 3, the air-conditioner with fixed frequency of the present invention control method when supply voltage is low, including:
S20, after air-conditioner with fixed frequency starts, controls electromagnetic valve 530 and opens and detect its operating current；
Specifically, air-conditioner with fixed frequency detects its operating current after starting the scheduled time again, and such as fixed frequency is empty
Device is adjusted to detect its operating current again after starting 5min.
S21, contrasts the operating current of the air-conditioner with fixed frequency detected with setting electric current, is detecting
Air-conditioner with fixed frequency operating current less than set electric current time, control electromagnetic valve 530 close.
Due to air-conditioner with fixed frequency of the present invention on startup, control electromagnetic valve 530 and open, therefore the second throttling
Element 520 jointly participates in throttling with first throttle element 510, and this advantageously reduces compressor unit 400
Starting current, therefore when supply voltage is relatively low, as peak times of power consumption supply voltage less than 180V time,
Participate in that coolant is carried out throttling by second section fluid element 520 and share a part of thermic load, which reduce
The load of compressor unit 400, thus it is properly functioning to ensure that air-conditioner with fixed frequency remains to, and then effectively drop
Low air-conditioner with fixed frequency frequently to open the cooling or heating effect caused poor, so air-conditioner with fixed frequency of the present invention
The comfortableness of user is improve when supply voltage is low.When voltage recovery, the fortune of compressor unit 400
Row current reduction, by controlling the closedown of electromagnetic valve 520, so that second section fluid element 530 is not involved in
Throttling, air-conditioner with fixed frequency the most of the present invention is in normal startup and operation.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or
Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Claims (4)
1. an air-conditioner with fixed frequency, including outdoor heat exchanger unit, indoor heat exchanger unit, cross valve,
Compressor unit and throttling unit, it is characterised in that described throttling unit include first throttle element,
Second section fluid element and electromagnetic valve, described first throttle element is connected to outdoor heat exchanger unit and indoor are changed
Between hot device unit；Described second section fluid element and electromagnetic valve are connected to outdoor heat exchanger list after being connected in series
Between unit and indoor heat exchanger unit, described electromagnetic valve controls second section fluid element by opening and closing
Whether participation throttles；
Described electromagnetic valve is opened when the supply voltage of air-conditioner with fixed frequency is less than setting value and is made the second throttling unit
Part participates in throttling, and described electromagnetic valve cuts out when the supply voltage of air-conditioner with fixed frequency is not less than setting value and hinders
Only second section fluid element participates in throttling.
2. an air-conditioner with fixed frequency as claimed in claim 1, it is characterised in that described first throttle unit
Part is throttling valve core, and described second section fluid element is capillary tube.
3. the control method of an air-conditioner with fixed frequency as claimed in claim 1, it is characterised in that including:
S20, after air-conditioner with fixed frequency starts, controls electromagnetic valve and opens and detect its operating current；
S21, contrasts the operating current of the air-conditioner with fixed frequency detected with setting electric current, in detection
The operating current of the air-conditioner with fixed frequency arrived, less than when setting electric current, controls closed electromagnetic valve.
4. the control method of an air-conditioner with fixed frequency as claimed in claim 3, it is characterised in that
In S20, being in particular, air-conditioner with fixed frequency detects its operating current after starting the scheduled time again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098781.2A CN103884127B (en) | 2014-03-14 | 2014-03-14 | Air-conditioner with fixed frequency and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410098781.2A CN103884127B (en) | 2014-03-14 | 2014-03-14 | Air-conditioner with fixed frequency and control method thereof |
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| CN103884127A CN103884127A (en) | 2014-06-25 |
| CN103884127B true CN103884127B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111706929A (en) * | 2020-06-02 | 2020-09-25 | 青岛海尔空调器有限总公司 | Control method and device for dehumidifier and dehumidifier |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2750259Y (en) * | 2004-12-03 | 2006-01-04 | 广东美的电器股份有限公司 | Low-temperature heat-production air conditioner |
| CN203744595U (en) * | 2014-03-14 | 2014-07-30 | 美的集团股份有限公司 | Fixed-frequency air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53122163A (en) * | 1977-03-31 | 1978-10-25 | Hitachi Ltd | Heat pump system air conditioner |
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2014
- 2014-03-14 CN CN201410098781.2A patent/CN103884127B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2750259Y (en) * | 2004-12-03 | 2006-01-04 | 广东美的电器股份有限公司 | Low-temperature heat-production air conditioner |
| CN203744595U (en) * | 2014-03-14 | 2014-07-30 | 美的集团股份有限公司 | Fixed-frequency air conditioner |
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| Publication number | Publication date |
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| CN103884127A (en) | 2014-06-25 |
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