CN105299988B - Air-cooled heat pump cold-hot water machine and its prevent high voltage protective method - Google Patents
Air-cooled heat pump cold-hot water machine and its prevent high voltage protective method Download PDFInfo
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Abstract
High voltage protective method and air-cooled heat pump cold-hot water machine with it are prevented the invention discloses a kind of air-cooled heat pump cold-hot water machine, be the described method comprises the following steps：Detect the leaving water temperature of outdoor environment temperature and delivery port；Obtaining the electric current I of compressor allows maximum current and the difference △ I of minimum current in the electric current of the maximum Imax reached and N number of compressor to allow the maximum △ Imax reached；During defrost action is performed, each outlet temperature T3 for heating the air cooling heat exchanger in water system is obtained；When there is T3 and be not up to default defrost disengaging value and △ I and be more than or equal to △ Imax, it is more than or equal to Imax if there is I, then the compressor shutdown corresponding to the I that this is more than or equal to Imax is controlled, to prevent the compressor from high voltage protective occur.This method effectively can prevent compressor from high voltage protective occur in defrost action process is performed, so as to improve Consumer's Experience.
Description
Technical field
The present invention relates to air conditioner technical field, more particularly to a kind of air-cooled heat pump cold-hot water machine prevents high voltage protective side
Method and a kind of air-cooled heat pump cold-hot water machine.
Background technology
Air-cooled heat pump water chiller-heater units are that, using air as low-temperature receiver or the middle-size and small-size central air-conditioning of thermal source, it is using refrigerant as refrigeration
Medium and water are exchanged heat, and the water after being freezed or being heated provides cold or heat by secondary heat exchange for desired zone.
Existing air-cooled heat pump water chiller-heater units are in defrost, due to the presence of refrigerating medium, and low pressure heat exchange property is good, therefore
Extremely easily there is high voltage protective.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose, which is that proposition is a kind of, effectively to prevent compressor from the air-cooled of high voltage protective occur in defrost action process is performed
Heat pump water chiller-heater machine prevents high voltage protective method.
It is another object of the present invention to propose a kind of air-cooled heat pump cold-hot water machine.
To achieve the above object, what one aspect of the present invention embodiment proposed a kind of air-cooled heat pump cold-hot water machine prevents high pressure
Guard method, the air-cooled heat pump cold-hot water machine include it is N number of heat water system, N is the integer more than or equal to 2, described N number of to heat
Water system shares a water cooling heat exchanger, and each heating water system includes compressor and air cooling heat exchanger, the water cooling heat exchanger
It is described to prevent high voltage protective method from comprising the following steps including water inlet and delivery port：When the air-cooled heat pump cold-hot water machine enters
When entering defrost pattern, outdoor environment temperature T4 is detected, and detect the leaving water temperature Tout of the delivery port；According to the outdoor ring
The leaving water temperature Tout of border temperature T4 and the delivery port, which is obtained when the air-cooled heat pump cold-hot water machine performs defrost action, to be compressed
The electric current I of machine allows the maximum Imax reached, and according to the outdoor environment temperature T4 and the leaving water temperature of the delivery port
Tout obtains when the air-cooled heat pump cold-hot water machine performs defrost action maximum current and minimum current in the electric current of N number of compressor
Difference △ I allow the maximum △ Imax reached；During the air-cooled heat pump cold-hot water machine performs defrost action, obtain
Take the outlet temperature T3 of each air cooling heat exchanger heated in water system；Default defrost disengaging value and △ are not up to when there is T3
I be more than or equal to △ Imax when, if there is I be more than or equal to Imax, then control this be more than or equal to Imax I corresponding to compressor
Shut down, to prevent the compressor from high voltage protective occur.
Air-cooled heat pump cold-hot water machine according to embodiments of the present invention prevents high voltage protective method, works as air-cooled heat pump cold-hot water
When machine enters defrost pattern, the leaving water temperature Tout of detection outdoor environment temperature T4 and delivery port, and according to outdoor environment temperature
The electric current I that T4 and leaving water temperature Tout obtains compressor when air-cooled heat pump cold-hot water machine performs defrost action allows the maximum reached
Maximum current and the difference △ I of minimum current allow the maximum △ Imax reached in the electric current of value Imax and N number of compressor,
During air-cooled heat pump cold-hot water machine performs defrost action, each outlet for heating the air cooling heat exchanger in water system is obtained
Temperature T3, when there is T3 and be not up to default defrost disengaging value and △ I and be more than or equal to △ Imax, is more than or equal to if there is I
Imax, then control this be more than or equal to Imax I corresponding to compressor shutdown, so as to effectively prevent compressor from high pressure guarantor occur
Shield, it is to avoid compressor damage, improves Consumer's Experience.
According to one embodiment of present invention, after the compressor shutdown for controlling this to be more than or equal to corresponding to Imax I, such as
Fruit does not stop the corresponding T3 for heating water system of compressor and reaches the default defrost disengaging value, then controls the air-cooled heat pump
Water chiller/heater exits the defrost pattern.
According to one embodiment of present invention, when each T3 for heating water system reaches the default defrost disengaging value
When, control the air-cooled heat pump cold-hot water machine to exit the defrost pattern.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of air-cooled heat pump cold-hot water machine, including：Water
Cold heat exchanger, the water cooling heat exchanger includes water inlet and delivery port；N number of to heat water system, N number of water system that heats is shared
The water cooling heat exchanger, each heating water system includes compressor and air cooling heat exchanger, wherein, N is the integer more than or equal to 2；
Temperature detecting module, for detection outdoor environment temperature T4 and detection when the air-cooled heat pump cold-hot water machine enters defrost pattern
The leaving water temperature Tout of the delivery port；Control module, for going out according to the outdoor environment temperature T4 and the delivery port
The electric current I that coolant-temperature gage Tout obtains compressor when the air-cooled heat pump cold-hot water machine performs defrost action allows the maximum reached
Imax, and the air-cooled heat pump cold-hot water is obtained according to the leaving water temperature Tout of the outdoor environment temperature T4 and the delivery port
Maximum current and the difference △ I of minimum current allow the maximum reached in the electric current of N number of compressor when machine performs defrost action
△ Imax, and during the air-cooled heat pump cold-hot water machine performs defrost action, the control module obtains each system
The outlet temperature T3 of air cooling heat exchanger in hot-water heating system, wherein, when existing, T3 is not up to default defrost disengaging value and △ I are big
When equal to △ Imax, it is more than or equal to Imax if there is I, it is right that the control module then controls this to be more than or equal to Imax I institutes
The compressor shutdown answered, to prevent the compressor from high voltage protective occur.
Air-cooled heat pump cold-hot water machine according to embodiments of the present invention, the outdoor that control module is detected according to temperature detecting module
The leaving water temperature Tout of environment temperature T4 and delivery port obtains the electricity of compressor when air-cooled heat pump cold-hot water machine performs defrost action
Stream I allows maximum current and the difference △ I of minimum current in the electric current of the maximum Imax and N number of compressor reached to allow to reach
The maximum △ Imax arrived, and during air-cooled heat pump cold-hot water machine performs defrost action, acquisition each heats water system
In air cooling heat exchanger outlet temperature T3, be more than or equal to △ Imax when there is T3 and be not up to default defrost disengaging value and △ I
When, if there is I be more than or equal to Imax, then control this be more than or equal to Imax I corresponding to compressor shutdown so that effectively prevent
Only there is high voltage protective in compressor, it is to avoid compressor damage, improves Consumer's Experience.
According to one embodiment of present invention, after the compressor shutdown for controlling this to be more than or equal to corresponding to Imax I, such as
Fruit does not stop the corresponding T3 for heating water system of compressor and reaches the default defrost disengaging value, and the control module is then controlled
The air-cooled heat pump cold-hot water machine exits the defrost pattern.
According to one embodiment of present invention, when each T3 for heating water system reaches the default defrost disengaging value
When, the control module controls the air-cooled heat pump cold-hot water machine to exit the defrost pattern.
According to one embodiment of present invention, the temperature detecting module includes being used to detect the outdoor environment temperature T4
Outdoor temperature sensor and leaving water temperature sensors for detecting the leaving water temperature Tout, wherein, the leaving water temperature
Sensor is arranged on the water outlet.
Brief description of the drawings
Fig. 1 is that air-cooled heat pump cold-hot water machine according to embodiments of the present invention prevents the flow chart of high voltage protective method.
Fig. 2 is that air-cooled heat pump cold-hot water machine according to an embodiment of the invention prevents the flow of high voltage protective method
Figure.
Fig. 3 is the structural representation of air-cooled heat pump cold-hot water machine according to an embodiment of the invention.
Reference：Water cooling heat exchanger 10, compressor 11, four-way valve 12, air cooling heat exchanger 13, restricting element 14, gas-liquid
Separator 15, compressor 21, four-way valve 22, air cooling heat exchanger 23, restricting element 24 and gas-liquid separator 25.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Prevent high pressure from protecting the air-cooled heat pump cold-hot water machine that describes to propose according to embodiments of the present invention with reference to the accompanying drawings
Maintaining method and air-cooled heat pump cold-hot water machine.
Fig. 1 is that air-cooled heat pump cold-hot water machine according to embodiments of the present invention prevents the flow chart of high voltage protective method, its
In, air-cooled heat pump cold-hot water machine heats water system including N number of, and N is the integer more than or equal to 2, and N number of water system that heats shares one
Water cooling heat exchanger, each heating water system includes compressor and air cooling heat exchanger, and water cooling heat exchanger includes water inlet and delivery port.
Specifically, as shown in figure 3, when N is equal to 2, air-cooled heat pump cold-hot water machine heats water system and the including first
Two heat water system, wherein, first, which heats water system, can include compressor 11, four-way valve 12, air cooling heat exchanger 13, throttling member
Part 14 and gas-liquid separator 15, second, which heats water system, can include compressor 21, four-way valve 22, air cooling heat exchanger 23, throttling
Element 24 and gas-liquid separator 25.Air cooling heat exchanger 13 and air cooling heat exchanger 23 can be finned heat exchanger, water cooling heat exchanger 10
It can be double pipe heat exchanger.
When air-cooled heat pump cold-hot water machine is in refrigeration mode, in heating water system first, the suction gas-liquid of compressor 11
Liquid refrigerants in separator 15 is simultaneously pressurizeed to export HTHP refrigerant to it, and HTHP refrigerant is after four-way valve 12
Air cooling heat exchanger 13 is flowed into, by air cooling heat exchanger 13 to outdoor air heat release to export liquid refrigerants, then through restricting element
Enter water cooling heat exchanger 10 after 14, liquid refrigerants absorbs after the heat for the water for flowing into water cooling heat exchanger 10, flowed by four-way valve 12
Return-air liquid/gas separator 15, wherein, the water being cooled in water cooling heat exchanger can provide cold after secondary heat exchange for desired zone again
Amount.The second refrigerant flow direction for heating water system heats water system with first, is just not described in detail here.
When air-cooled heat pump cold-hot water machine is in heating mode, in heating water system first, the suction gas-liquid of compressor 11
Liquid refrigerants in separator 15 is simultaneously pressurizeed to export HTHP refrigerant to it, and HTHP refrigerant is after four-way valve 12
Water cooling heat exchanger 10 is flowed into, heat release is carried out to the water for flowing into water cooling heat exchanger 10 to export liquid refrigerants, after restricting element 14
Into air cooling heat exchanger 13, the heat in outdoor air is absorbed by air cooling heat exchanger 13, gas is then flowed back to by four-way valve 12
Liquid/gas separator 15, wherein, heated water can provide heat after secondary heat exchange for desired zone again in water cooling heat exchanger.The
The two refrigerant flow directions for heating water system heat water system with first, are just not described in detail here.
When air-cooled heat pump cold-hot water machine is in heating mode, due to when refrigerant enters air cooling heat exchanger by absorption chamber outer space
Heat in gas, so that frosting situation occurs in air cooling heat exchanger, it is therefore desirable to carry out defrost.In air-cooled heat pump cold-hot water machine
When carrying out defrost, due to the presence of refrigerating medium, it is easy to high voltage protective occur, therefore, embodiments of the invention propose one kind
Air-cooled heat pump cold-hot water machine prevents high voltage protective method.
As shown in figure 1, the air-cooled heat pump cold-hot water machine prevents the high voltage protective method from comprising the following steps：
S1, when air-cooled heat pump cold-hot water machine enters defrost pattern, detects outdoor environment temperature T4, and detect delivery port
Leaving water temperature Tout.
S2, air-cooled heat pump cold-hot water machine execution is obtained according to the leaving water temperature Tout of outdoor environment temperature T4 and delivery port
The electric current I of compressor allows the maximum Imax reached during frost action, and according to the water outlet of outdoor environment temperature T4 and delivery port
Temperature Tout obtains when air-cooled heat pump cold-hot water machine performs defrost action maximum current and minimum current in the electric current of N number of compressor
Difference △ I allow the maximum △ Imax reached.
Wherein, maximum Imax be in the range of certain outdoor environment temperature and certain outlet water temperature range in, air-cooled heat
When pump water chiller/heater performs defrost action, it is allowed to the maximum that the electric current I of compressor reaches.Maximum △ Imax are in certain room
In external environment temperature range and in certain outlet water temperature range, when air-cooled heat pump cold-hot water machine performs defrost action, N number of compressor
Electric current in the maximum reached that is allowed of maximum current and the difference △ I of minimum current.
S3, during air-cooled heat pump cold-hot water machine performs defrost action, acquisition each heats air-cooled in water system
The outlet temperature T3 of heat exchanger.
S4, when there is T3 and be not up to default defrost disengaging value and △ I and be more than or equal to △ Imax, is more than if there is I
Equal to Imax, then the compressor shutdown corresponding to the I that this is more than or equal to Imax is controlled, to prevent the compressor from high pressure guarantor occur
Shield.Wherein, default defrost disengaging value can be set according to actual conditions.
Specifically, before defrost action starts, water temperature is first gone out according to the outdoor environment temperature T4 of detection and delivery port
Spend Tout and select suitable maximum Imax and maximum △ Imax.After defrost action is performed, N number of air-cooled heat exchange is obtained in real time
The electric current of the outlet temperature of device and N number of compressor, and outlet temperature and the electric current of N number of compressor to N number of air cooling heat exchanger
Middle maximum current and the difference △ I of minimum current are judged.When defrost for a period of time after, if N number of air cooling heat exchanger goes out
There is not up to default defrost disengaging value in mouth temperature, and there are △ I >=△ Imax, then it represents that due to factors such as frosting or environment
Influence so that in air-cooled heat pump cold-hot water machine heat water system defrost occur relatively make great difference, water system may be heated
There is the risk of hypertonia in system, accordingly, it would be desirable to be determined whether to the electric current of N number of compressor, if it is determined that the electricity of compressor
Stream is more than or equal to Imax, then the compressor shutdown is controlled, to prevent the compressor from high voltage protective occur.
According to one embodiment of present invention, after the compressor shutdown for controlling this to be more than or equal to corresponding to Imax I, such as
Fruit does not stop the corresponding T3 for heating water system of compressor and reaches default defrost disengaging value, then controls air-cooled heat pump cold-hot water machine
Exit defrost pattern.
That is, in defrost action process is performed, if it is determined that the electric current of compressor is more than or equal to Imax, then directly
Connect and control the compressor shutdown, reach that default defrost is moved back until not stopping the outlet temperature of the corresponding air cooling heat exchanger of compressor
Go out value, then control air-cooled heat pump cold-hot water machine to exit defrost pattern.
According to one embodiment of present invention, when each T3 for heating water system reaches default defrost disengaging value,
Control air-cooled heat pump cold-hot water machine exits defrost pattern.
It is understood that in defrost action process is performed, if N number of defrost for heating water system is more or less the same,
Be not in the situation that △ I are more than or equal to △ Imax, therefore, when each T3 for heating water system reaches that default defrost is moved back
When going out to be worth, control air-cooled heat pump cold-hot water machine exits defrost pattern.
Specifically, after air-cooled heat pump cold-hot water machine enters defrost pattern, detection outdoor environment temperature T4 and delivery port
Leaving water temperature Tout, allows to reach according to the outdoor environment temperature T4 of the detection and leaving water temperature Tout electric current I for obtaining compressor
Maximum Imax and N number of compressor electric current in maximum current and the difference △ I of minimum current allow the maximum △ reached
Imax。
After air-cooled heat pump cold-hot water machine starts to perform defrost action, the outlet temperature of N number of air cooling heat exchanger is obtained in real time
Respectively T31、T32、…、T3N, and the outlet temperature T3 of N number of air cooling heat exchanger to acquisition1、T32、…、T3NJudged, together
When obtain the current flow respectively I of N number of compressor in real time1、I2、…、IN, and calculate maximum in the current flow of N number of compressor
The difference △ I of electric current and minimum current, and N number of compressor to acquisition current flow I1、I2、…、INWith the maximum of calculating
Electric current and the difference △ I of minimum current are judged.
Wherein, when △ I are not up to △ Imax, and the outlet temperature T3 of the N number of air cooling heat exchanger obtained1、T32、…、T3N
Default defrost disengaging value is reached, then directly control air-cooled heat pump cold-hot water machine exits defrost pattern.
And as the outlet temperature T3 of the N number of air cooling heat exchanger obtained1、T32、…、T3NIt is middle to there is not up to default defrost
Disengaging value, but now maximum current and the difference △ I of minimum current have been above or equal to △ in the electric current of N number of compressor
Imax, then show due to the influence of the factors such as frosting or environment so that the change for heating water system in air-cooled heat pump cold-hot water machine
Relatively making great difference occurs in frost, and may have and heat water system and the risk of hypertonia occur, accordingly, it would be desirable to work as to N number of compressor
Preceding electric current I1、I2、…、INJudged, if the current flow of compressor is more than or equal to Imax, control the compressor to stop
Machine, to prevent the compressor from high voltage protective occur.When remaining other outlet temperatures for not stopping the corresponding air cooling heat exchanger of compressor
Default defrost disengaging value is reached, then controls air-cooled heat pump cold-hot water machine to exit defrost pattern.
Further, as shown in Fig. 2 air-cooled heat pump cold-hot water machine prevents the high voltage protective process from comprising the following steps：
S101, into defrost pattern.
S102, detects outdoor environment temperature T4 and leaving water temperature Tout, determines defrost disengaging value.
S103, Imax and △ Imax are obtained according to outdoor environment temperature T4 and leaving water temperature Tout.
S104, judges whether the outlet temperature T3 of N number of air cooling heat exchanger reaches and default exits defrost value.If it is,
Perform step S109；If not, performing step S105.
S105, judges whether △ I are more than or equal to △ Imax.If it is, performing step S106；If not, return to step
S104。
S106, judges whether I is more than or equal in Imax, that is, the electric current for judging N number of compressor and is more than or equal to the presence or absence of I
Imax.If it is, performing step S107；If not, return to step S104.
S107, controls corresponding compressor shutdown.
Whether S108, judge remaining not stopping the corresponding T3 of compressor and reach default to exit defrost value.If it is, holding
Row step S109；If not, return to step S105.
S109, exits defrost pattern.
In summary, air-cooled heat pump cold-hot water machine according to embodiments of the present invention prevents high voltage protective method, when air-cooled
When heat pump water chiller-heater machine enters defrost pattern, the leaving water temperature Tout of detection outdoor environment temperature T4 and delivery port, and according to room
The electric current I that external environment temperature T4 and leaving water temperature Tout obtains compressor when air-cooled heat pump cold-hot water machine performs defrost action allows
Maximum current and the difference △ I of minimum current allow to reach most in the maximum Imax and the electric current of N number of compressor that reach
Big value △ Imax, during air-cooled heat pump cold-hot water machine performs defrost action, acquisition each heats air-cooled in water system
The outlet temperature T3 of heat exchanger, when there is T3 and be not up to default defrost disengaging value and △ I and be more than or equal to △ Imax, if deposited
I be more than or equal to Imax, then control this be more than or equal to Imax I corresponding to compressor shutdown, so as to effectively prevent compressor
There is high voltage protective, it is to avoid compressor damage, improve Consumer's Experience.
Fig. 3 is the structural representation of air-cooled heat pump cold-hot water machine according to an embodiment of the invention.As shown in figure 3, should
Air-cooled heat pump cold-hot water machine includes：Water cooling heat exchanger 10, N number of heat water system, temperature detecting module (not specifically illustrated in figure)
With control module (in figure not specifically illustrated).
Wherein, water cooling heat exchanger 10 includes water inlet and delivery port, and N number of water system that heats shares water cooling heat exchanger 10, often
The individual water system that heats includes compressor and air cooling heat exchanger, wherein, N is the integer more than or equal to 2.Temperature detecting module is used for
The leaving water temperature Tout of detection outdoor environment temperature T4 and detection delivery port, control when air-cooled heat pump cold-hot water machine enters defrost pattern
Molding block is used to obtain air-cooled heat pump cold-hot water machine execution according to the leaving water temperature Tout of outdoor environment temperature T4 and delivery port
The electric current I of compressor allows the maximum Imax reached during frost action, and according to the water outlet of outdoor environment temperature T4 and delivery port
Temperature Tout obtains when air-cooled heat pump cold-hot water machine performs defrost action maximum current and minimum current in the electric current of N number of compressor
Difference △ I allow the maximum △ Imax reached, and during air-cooled heat pump cold-hot water machine performs defrost action, control
Molding block obtains each outlet temperature T3 for heating the air cooling heat exchanger in water system, is moved back when there is T3 and be not up to default defrost
When going out value and △ I and being more than or equal to △ Imax, it is more than or equal to Imax if there is I, control module is then controlled should be more than or equal to Imax
I corresponding to compressor shutdown, to prevent the compressor from high voltage protective occur.
It should be noted that maximum Imax is in the range of certain outdoor environment temperature and certain outlet water temperature range
It is interior, when air-cooled heat pump cold-hot water machine performs defrost action, it is allowed to the maximum that the electric current I of compressor reaches.Maximum △ Imax
It is that air-cooled heat pump cold-hot water machine performs defrost action with certain outlet water temperature range in the range of certain outdoor environment temperature
When, the maximum reached that maximum current and the difference △ I of minimum current are allowed in the electric current of N number of compressor.
Specifically, as shown in figure 3, when N is equal to 2, air-cooled heat pump cold-hot water machine heats water system and the including first
Two heat water system, wherein, first, which heats water system, can include compressor 11, four-way valve 12, air cooling heat exchanger 13, throttling member
Part 14 and gas-liquid separator 15, second, which heats water system, can include compressor 21, four-way valve 22, air cooling heat exchanger 23, throttling
Element 24 and gas-liquid separator 25.Air cooling heat exchanger 13 and air cooling heat exchanger 23 can be finned heat exchanger, water cooling heat exchanger 10
It can be double pipe heat exchanger.
When air-cooled heat pump cold-hot water machine is in refrigeration mode, in heating water system first, the suction gas-liquid of compressor 11
Liquid refrigerants in separator 15 is simultaneously pressurizeed to export HTHP refrigerant to it, and HTHP refrigerant is after four-way valve 12
Air cooling heat exchanger 13 is flowed into, by air cooling heat exchanger 13 to outdoor air heat release to export liquid refrigerants, then through restricting element
Enter water cooling heat exchanger 10 after 14, liquid refrigerants absorbs after the heat for the water for flowing into water cooling heat exchanger 10, flowed by four-way valve 12
Return-air liquid/gas separator 15, wherein, the water being cooled in water cooling heat exchanger 10 can be provided after secondary heat exchange for desired zone again
Cold.The second refrigerant flow direction for heating water system heats water system with first, is just not described in detail here.
When air-cooled heat pump cold-hot water machine is in heating mode, in heating water system first, the suction gas-liquid of compressor 11
Liquid refrigerants in separator 15 is simultaneously pressurizeed to export HTHP refrigerant to it, and HTHP refrigerant is after four-way valve 12
Water cooling heat exchanger 10 is flowed into, heat release is carried out to the water for flowing into water cooling heat exchanger 10 to export liquid refrigerants, after restricting element 14
Into air cooling heat exchanger 13, the heat in outdoor air is absorbed by air cooling heat exchanger 13, gas is then flowed back to by four-way valve 12
Liquid/gas separator 15, wherein, heated water can provide heat after secondary heat exchange for desired zone again in water cooling heat exchanger 10.
The second refrigerant flow direction for heating water system heats water system with first, is just not described in detail here.
When air-cooled heat pump cold-hot water machine is in heating mode, due to when refrigerant enters air cooling heat exchanger by absorption chamber outer space
Heat in gas, so that frosting situation occurs in air cooling heat exchanger, it is therefore desirable to carry out defrost.In air-cooled heat pump cold-hot water machine
When carrying out defrost, due to the presence of refrigerating medium, it is easy to high voltage protective occur, therefore, in an embodiment of the present invention, when air-cooled
When heat pump water chiller-heater machine enters defrost pattern, before defrost action starts, control module is first according to the outdoor environment temperature of detection
The leaving water temperature Tout of T4 and delivery port selects suitable maximum Imax and maximum △ Imax.After defrost action is performed,
Control module obtains the outlet temperature of N number of air cooling heat exchanger and the electric current of N number of compressor in real time, and to N number of air cooling heat exchanger
Maximum current and the difference △ I of minimum current are judged in the electric current of outlet temperature and N number of compressor.When one section of defrost
Between after, if there is not up to default defrost disengaging value in the outlet temperature of N number of air cooling heat exchanger, and have △ I >=△ Imax,
Then represent due to the influence of the factors such as frosting or environment so that the defrost for heating water system in air-cooled heat pump cold-hot water machine occurs
Relatively make great difference, may have and heat water system and the risk of hypertonia occur, accordingly, it would be desirable to which control module is to N number of compressor
Electric current is determined whether, if it is determined that the electric current of compressor is more than or equal to Imax, then control module controls the compressor shutdown,
To prevent the compressor from high voltage protective occur.
According to one embodiment of present invention, temperature detecting module includes the outdoor temp for being used to detect outdoor environment temperature T4
Sensor and the leaving water temperature sensors for detecting leaving water temperature Tout are spent, wherein, leaving water temperature sensors are arranged on water outlet
At mouthful.
According to one embodiment of present invention, after the compressor shutdown for controlling this to be more than or equal to corresponding to Imax I, such as
Fruit does not stop the corresponding T3 for heating water system of compressor and reaches default defrost disengaging value, and control module then controls air-cooled heat pump
Water chiller/heater exits the defrost pattern.
That is, in defrost action process is performed, if it is determined that the electric current of compressor is more than or equal to Imax, then directly
Connect and control the compressor shutdown, reach that default defrost is moved back until not stopping the outlet temperature of the corresponding air cooling heat exchanger of compressor
Go out value, then control air-cooled heat pump cold-hot water machine to exit defrost pattern.
According to one embodiment of present invention, when each T3 for heating water system reaches default defrost disengaging value,
Control module control air-cooled heat pump cold-hot water machine exits defrost pattern.
It is understood that in defrost action process is performed, if N number of defrost for heating water system is more or less the same,
Be not in the situation that △ I are more than or equal to △ Imax, therefore, when each T3 for heating water system reaches that default defrost is moved back
When going out to be worth, control air-cooled heat pump cold-hot water machine exits defrost pattern.
Specifically, after air-cooled heat pump cold-hot water machine enters defrost pattern, outdoor temperature sensor detection outdoor environment temperature
T4 is spent, leaving water temperature sensors detect the leaving water temperature Tout of delivery port, and control module is according to the outdoor environment temperature T4 of detection
Allow maximum electricity in the electric current of the maximum Imax reached and N number of compressor with the leaving water temperature Tout electric current I for obtaining compressor
Stream and the difference △ I of minimum current allow the maximum △ Imax reached.
After air-cooled heat pump cold-hot water machine starts to perform defrost action, control module obtains N number of air cooling heat exchanger in real time
Outlet temperature is respectively T31、T32、…、T3N, and the outlet temperature T3 of N number of air cooling heat exchanger to acquisition1、T32、…、T3NEnter
Row judges, while control module obtains the current flow respectively I of N number of compressor in real time1、I2、…、IN, and calculate N number of compression
Maximum current and the difference △ I of minimum current in the current flow of machine, and N number of compressor to acquisition current flow I1、
I2、…、INJudged with the maximum current of calculating and the difference △ I of minimum current.
Wherein, when △ I are not up to △ Imax, and the outlet temperature T3 of the N number of air cooling heat exchanger obtained1、T32、…、T3N
Default defrost disengaging value is reached, then control module directly controls air-cooled heat pump cold-hot water machine to exit defrost pattern.
And as the outlet temperature T3 of the N number of air cooling heat exchanger obtained1、T32、…、T3NIt is middle to there is not up to default defrost
Disengaging value, but now maximum current and the difference △ I of minimum current have been above or equal to △ in the electric current of N number of compressor
Imax, then show due to the influence of the factors such as frosting or environment so that the change for heating water system in air-cooled heat pump cold-hot water machine
Relatively making great difference occurs in frost, and may have and heat water system and the risk of hypertonia occur, accordingly, it would be desirable to which control module is to N number of pressure
The current flow I of contracting machine1、I2、…、INJudged, if the current flow of compressor is more than or equal to Imax, control mould
Block controls the compressor shutdown, to prevent the compressor from high voltage protective occur.When residue is other, not stop compressor corresponding air-cooled
The outlet temperature of heat exchanger reaches default defrost disengaging value, then control module control air-cooled heat pump cold-hot water machine exits defrost
Pattern.
Further, air-cooled heat pump cold-hot water machine prevents high voltage protective process as shown in Fig. 2 no longer retouching in detail here
State.
Air-cooled heat pump cold-hot water machine according to embodiments of the present invention, the outdoor that control module is detected according to temperature detecting module
The leaving water temperature Tout of environment temperature T4 and delivery port obtains the electricity of compressor when air-cooled heat pump cold-hot water machine performs defrost action
Stream I allows maximum current and the difference △ I of minimum current in the electric current of the maximum Imax and N number of compressor reached to allow to reach
The maximum △ Imax arrived, and during air-cooled heat pump cold-hot water machine performs defrost action, acquisition each heats water system
In air cooling heat exchanger outlet temperature T3, be more than or equal to △ Imax when there is T3 and be not up to default defrost disengaging value and △ I
When, if there is I be more than or equal to Imax, then control this be more than or equal to Imax I corresponding to compressor shutdown so that effectively prevent
Only there is high voltage protective in compressor, it is to avoid compressor damage, improves Consumer's Experience.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (7)
1. a kind of prevent air-cooled heat pump cold-hot water machine from the method for high voltage protective occur, it is characterised in that the air-cooled heat pump is cold and hot
Water dispenser heats water system including N number of, and N is the integer more than or equal to 2, and N number of water system that heats shares a water cooling heat exchanger,
Each water system that heats includes compressor and air cooling heat exchanger, and the water cooling heat exchanger includes water inlet and delivery port, described anti-
Only high voltage protective method comprises the following steps：
When the air-cooled heat pump cold-hot water machine enters defrost pattern, outdoor environment temperature T4 is detected, and detect the delivery port
Leaving water temperature Tout；
The air-cooled heat pump cold-hot water machine is obtained according to the leaving water temperature Tout of the outdoor environment temperature T4 and the delivery port
The electric current I of compressor allows the maximum Imax reached when performing defrost action, and according to the outdoor environment temperature T4 and institute
The leaving water temperature Tout for stating delivery port is obtained when the air-cooled heat pump cold-hot water machine performs defrost action in the electric current of N number of compressor
Maximum current and the difference △ I of minimum current allow the maximum △ Imax reached；
During the air-cooled heat pump cold-hot water machine performs defrost action, each air-cooled heat exchange heated in water system is obtained
The outlet temperature T3 of device；
When there is T3 and be not up to default defrost disengaging value and △ I and be more than or equal to △ Imax, it is more than or equal to if there is I
Imax, then control this be more than or equal to Imax I corresponding to compressor shutdown, to prevent the compressor from high voltage protective occur.
2. according to claim 1 prevent air-cooled heat pump cold-hot water machine from the method for high voltage protective occur, it is characterised in that
This is controlled to be more than or equal to after the compressor shutdown corresponding to Imax I, if not stopping the corresponding T3 for heating water system of compressor
The default defrost disengaging value is reached, then controls the air-cooled heat pump cold-hot water machine to exit the defrost pattern.
3. according to claim 1 prevent air-cooled heat pump cold-hot water machine from the method for high voltage protective occur, it is characterised in that when
When each T3 for heating water system reaches the default defrost disengaging value, the air-cooled heat pump cold-hot water machine is controlled to exit institute
State defrost pattern.
4. a kind of air-cooled heat pump cold-hot water machine, it is characterised in that including：
Water cooling heat exchanger, the water cooling heat exchanger includes water inlet and delivery port；
N number of to heat water system, N number of water system that heats shares the water cooling heat exchanger, and each heating water system includes compression
Machine and air cooling heat exchanger, wherein, N is the integer more than or equal to 2；
Temperature detecting module, for the air-cooled heat pump cold-hot water machine enter defrost pattern when detection outdoor environment temperature T4 and
Detect the leaving water temperature Tout of the delivery port；
Control module, for obtaining described air-cooled according to the outdoor environment temperature T4 and the delivery port leaving water temperature Tout
The electric current I of compressor allows the maximum Imax reached when heat pump water chiller-heater machine performs defrost action, and according to the outdoor ring
The leaving water temperature Tout of border temperature T4 and the delivery port obtains N number of pressure when the air-cooled heat pump cold-hot water machine performs defrost action
Maximum current and the difference △ I of minimum current allow the maximum △ Imax reached in the electric current of contracting machine, and described air-cooled
During heat pump water chiller-heater machine performs defrost action, the control module obtains each air cooling heat exchanger heated in water system
Outlet temperature T3,
Wherein, when there is T3 and be not up to default defrost disengaging value and △ I and be more than or equal to △ Imax, be more than if there is I etc.
In Imax, the control module then controls the compressor shutdown corresponding to the I that this is more than or equal to Imax, to prevent the compressor from going out
Existing high voltage protective.
5. air-cooled heat pump cold-hot water machine according to claim 4, it is characterised in that in the I for controlling this to be more than or equal to Imax
After corresponding compressor shutdown, if not stopping the corresponding T3 for heating water system of compressor reaches that the default defrost is moved back
Go out value, the control module then controls the air-cooled heat pump cold-hot water machine to exit the defrost pattern.
6. air-cooled heat pump cold-hot water machine according to claim 4, it is characterised in that when each T3 for heating water system reaches
During to the default defrost disengaging value, the control module controls the air-cooled heat pump cold-hot water machine to exit the defrost mould
Formula.
7. air-cooled heat pump cold-hot water machine according to claim 4, it is characterised in that the temperature detecting module includes being used for
Detect the outdoor temperature sensor of the outdoor environment temperature T4 and for detecting that the leaving water temperature of the leaving water temperature Tout is passed
Sensor, wherein, the leaving water temperature sensors are arranged on the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708853.5A CN105299988B (en) | 2015-10-26 | 2015-10-26 | Air-cooled heat pump cold-hot water machine and its prevent high voltage protective method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708853.5A CN105299988B (en) | 2015-10-26 | 2015-10-26 | Air-cooled heat pump cold-hot water machine and its prevent high voltage protective method |
Publications (2)
| Publication Number | Publication Date |
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| CN105299988A CN105299988A (en) | 2016-02-03 |
| CN105299988B true CN105299988B (en) | 2017-07-28 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106841906B (en) * | 2017-01-12 | 2019-09-13 | 广东美的暖通设备有限公司 | The compressor wiring recognition methods of Air-Cooled Heat Pump Unit and device |
| CN107166741B (en) * | 2017-06-19 | 2019-10-01 | 广东美的暖通设备有限公司 | Heat pump unit and its anti-freeze control method |
| CN107543346B (en) * | 2017-07-18 | 2020-02-14 | 广东美的暖通设备有限公司 | Method and system for controlling frosting uniformity and air cooling module unit |
| CN109556258B (en) * | 2018-11-06 | 2021-03-16 | 广东美的暖通设备有限公司 | Air conditioning system and control method thereof |
| CN113390161A (en) * | 2020-03-12 | 2021-09-14 | 青岛海尔空调电子有限公司 | Air-cooled heat pump hot water air conditioning unit and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006145087A (en) * | 2004-11-17 | 2006-06-08 | Denso Corp | Supercritical refrigeration cycle |
| US8672642B2 (en) * | 2008-06-29 | 2014-03-18 | Bristol Compressors International, Inc. | System and method for starting a compressor |
| JP2011179762A (en) * | 2010-03-02 | 2011-09-15 | Panasonic Corp | Heat pump hot water generator |
| CN202915605U (en) * | 2012-09-29 | 2013-05-01 | 林志辉 | Integral heat exchanger and quadruple heating pump system with same |
| CN203572107U (en) * | 2013-11-06 | 2014-04-30 | 林志辉 | Supercooling heat exchanger and heat pump system with same |
| CN104896666B (en) * | 2015-05-28 | 2017-12-08 | 广东美的制冷设备有限公司 | The control method and air-conditioning of a kind of air-conditioner outdoor unit |
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