CN106686948B - Refrigerant radiator and its control method - Google Patents
Refrigerant radiator and its control method Download PDFInfo
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- CN106686948B CN106686948B CN201611264435.2A CN201611264435A CN106686948B CN 106686948 B CN106686948 B CN 106686948B CN 201611264435 A CN201611264435 A CN 201611264435A CN 106686948 B CN106686948 B CN 106686948B
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- refrigerant
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20354—Refrigerating circuit comprising a compressor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of refrigerant radiator and its control method, the refrigerant radiator includes compressor, outdoor heat exchanger, orifice union and refrigerant radiating subassembly, the exhaust outlet of compressor is connected with one end of outdoor heat exchanger, the other end of outdoor heat exchanger is connected by orifice union with the entrance of refrigerant radiating subassembly, orifice union includes restricting element and bypass elements in parallel, the described method comprises the following steps: control refrigerant radiator is run in a chiller mode, and obtain the dew-point temperature around refrigerant radiating subassembly, and obtain the Current Temperatures of refrigerant radiating subassembly；Orifice union is controlled according to the Current Temperatures of dew-point temperature and refrigerant radiating subassembly, so that the temperature of refrigerant radiating subassembly is maintained at dew-point temperature or more.To effectively prevent causing because the temperature of refrigerant radiating subassembly is too low electric-controlled plate surface sweating to damage.
Description
Technical field
The present invention relates to Oil Temperature Controlling Technigue field, in particular to a kind of the control method and one kind of refrigerant radiator
Refrigerant radiator.
Background technique
In general, electric-controlled plate can generate a large amount of heat at work, particularly with speed of service height, or include high-power mould
For the electric-controlled plate of block, if heat dissipation may cause electric-controlled plate damage not in time, the safety in utilization of electric-controlled plate and reliable is influenced
Property.
In the related technology, have and radiated using fan, cooling fin etc. to electric-controlled plate, also have and utilize the refrigerant type of cooling pair
Electric-controlled plate radiates, wherein when being radiated using the refrigerant type of cooling, although heat dissipation effect is relatively good, is easy to
The problem of occurring leading to electric-controlled plate surface sweating because refrigerant temperature is too low, and then electric-controlled plate caused to damage.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, enabling to refrigerant an object of the present invention is to provide a kind of control method of refrigerant radiator
The temperature of radiating subassembly remains at dew-point temperature or more, to effectively prevent causing because the temperature of refrigerant radiating subassembly is too low
The damage of electric-controlled plate surface sweating.
Another object of the present invention is to propose a kind of refrigerant radiator.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of control method of refrigerant radiator, institute
Stating refrigerant radiator includes compressor, outdoor heat exchanger, orifice union and refrigerant radiating subassembly, the exhaust outlet of the compressor
It is connected with one end of the outdoor heat exchanger, the other end of the outdoor heat exchanger is dissipated by the orifice union and the refrigerant
The entrance of hot component is connected, and the orifice union includes restricting element and bypass elements in parallel, and the method includes following steps
Rapid: S1 controls the refrigerant radiator and runs in a chiller mode, and obtains the dew point temperature around the refrigerant radiating subassembly
Degree, and obtain the Current Temperatures of the refrigerant radiating subassembly；S2, according to the dew-point temperature and the refrigerant radiating subassembly
Current Temperatures control the orifice union so that the temperature of the refrigerant radiating subassembly be maintained at the dew-point temperature with
On.
The control method of refrigerant radiator according to an embodiment of the present invention is controlling refrigerant radiator in a chiller mode
When operation, the dew-point temperature around refrigerant radiating subassembly is obtained, while obtaining the Current Temperatures of refrigerant radiating subassembly, then, root
Orifice union is controlled according to the Current Temperatures of dew-point temperature and refrigerant gallbladder-heat component, so that the temperature of refrigerant radiating subassembly is protected
It holds more than dew-point temperature, to effectively prevent that electric-controlled plate surface sweating is caused to damage because the temperature of refrigerant radiating subassembly is too low.
According to one embodiment of present invention, when the orifice union includes first throttle element and the first bypass elements
When, the step S2 includes: S21, judges whether the Current Temperatures are less than or equal to the dew-point temperature and the first preset temperature
Between difference and continue the first preset time；S22, if it is, the aperture for controlling the first throttle element tunes up first
Default aperture, and after second preset time that is delayed, step S21 is repeated, until the aperture tune of the first throttle element
Big extremely preset maximum opening；S23, if it is not, then the first throttle element is controlled according to normal control mode, and
First bypass elements are controlled to be in close state.
According to one embodiment of present invention, when the aperture of the first throttle element is tuned up to preset maximum opening
When, further includes: S221, judge the Current Temperatures whether be less than or equal to the sum of the dew-point temperature and the second preset temperature and
Continue first preset time；S222, if it is, controlling the first throttle element keeps the preset maximum opening
It is constant, and it is in the open state to control first bypass elements.
According to one embodiment of present invention, after step S222, further includes: S223 judges that the Current Temperatures are
It is no to be more than or equal to the sum of the dew-point temperature and third preset temperature and continue first preset time, wherein the third
Preset temperature is greater than second preset temperature；S224, if it is, controlling the first throttle element keeps described preset
Maximum opening is constant, and controls first bypass elements and be in close state, and whether further judge the Current Temperatures
More than or equal to the sum of the dew-point temperature and the 4th preset temperature and continue first preset time, wherein the described 4th is pre-
If temperature is greater than the third preset temperature；S225, if it is, according to normal control mode to the first throttle element into
Row control, and control first bypass elements and be in close state.
According to one embodiment of present invention, inlet temperature or institute of the Current Temperatures for the refrigerant radiating subassembly
State the outlet temperature of refrigerant radiating subassembly, wherein when the Current Temperatures are the inlet temperature of the refrigerant radiating subassembly, institute
The second preset temperature is stated less than zero；When the Current Temperatures are the outlet temperature of the refrigerant radiating subassembly, described second is pre-
If temperature is greater than zero.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of refrigerant radiator, comprising: compression
Machine；Outdoor heat exchanger；Orifice union, the orifice union include restricting element and bypass elements in parallel；Refrigerant radiating subassembly,
The exhaust outlet of the compressor is connected with one end of the outdoor heat exchanger, and the other end of the outdoor heat exchanger passes through the section
Stream component is connected with the entrance of the refrigerant radiating subassembly；Control module, the control module is for controlling the refrigerant heat dissipation
Device is run in a chiller mode, and obtains the dew-point temperature around the refrigerant radiating subassembly, and obtains the refrigerant heat dissipation
The Current Temperatures of component, and according to the Current Temperatures of the dew-point temperature and the refrigerant radiating subassembly to the orifice union into
Row control, so that the temperature of the refrigerant radiating subassembly is maintained at the dew-point temperature or more.
Refrigerant radiator according to an embodiment of the present invention, control module control refrigerant radiator are transported in a chiller mode
Row, and the dew-point temperature around refrigerant radiating subassembly is obtained, while obtaining the Current Temperatures of refrigerant radiating subassembly, and according to dew point
The Current Temperatures of temperature and refrigerant radiating subassembly control orifice union, so that the temperature of refrigerant radiating subassembly is maintained at dew
More than point temperature, to effectively prevent that electric-controlled plate surface sweating is caused to damage because the temperature of refrigerant radiating subassembly is too low.
According to one embodiment of present invention, when the orifice union includes first throttle element and the first bypass elements
When, the control module carries out the orifice union according to the Current Temperatures of the dew-point temperature and the refrigerant radiating subassembly
When control, wherein the control module judges whether the Current Temperatures are less than or equal to the dew-point temperature and the first default temperature
Difference between degree and continue the first preset time；If so, the control module then controls opening for the first throttle element
Degree tunes up the first default aperture, and after second preset time that is delayed, judges whether the Current Temperatures are less than or equal to institute again
It states the difference between dew-point temperature and the first preset temperature and continues the first preset time, until the first throttle element
Aperture is tuned up to preset maximum opening；If not, the control module is then according to normal control mode to the first throttle
Element is controlled, and is controlled first bypass elements and be in close state.
According to one embodiment of present invention, when the aperture of the first throttle element is tuned up to preset maximum opening
When, the control module also judge the Current Temperatures whether be less than or equal to the sum of the dew-point temperature and the second preset temperature,
And continue first preset time；If so, the control module, which then controls the first throttle element, keeps described default
Maximum opening it is constant, and it is in the open state to control first bypass elements.
According to one embodiment of present invention, the first throttle element holding preset maximum opening is being controlled not
Become, and control first bypass elements it is in the open state after, whether the control module also judges the Current Temperatures
More than or equal to the sum of the dew-point temperature and third preset temperature and continue first preset time, wherein the third is pre-
If temperature is greater than second preset temperature；If so, the control module then controls described in the first throttle element holding
Preset maximum opening is constant, and controls first bypass elements and be in close state, and further judge the current temperature
Whether degree is more than or equal to the sum of the dew-point temperature and the 4th preset temperature and continues first preset time, wherein described
4th preset temperature is greater than the third preset temperature；If so, the control module is then according to normal control mode to described
First throttle element is controlled, and is controlled first bypass elements and be in close state.
According to one embodiment of present invention, inlet temperature or institute of the Current Temperatures for the refrigerant radiating subassembly
State the outlet temperature of refrigerant radiating subassembly, wherein when the Current Temperatures are the inlet temperature of the refrigerant radiating subassembly, institute
The second preset temperature is stated less than zero；When the Current Temperatures are the outlet temperature of the refrigerant radiating subassembly, described second is pre-
If temperature is greater than zero.
Detailed description of the invention
Fig. 1 is the flow chart of the control method of refrigerant radiator according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of refrigerant radiator according to an embodiment of the invention；
Fig. 3 is the structural schematic diagram of refrigerant radiator in accordance with another embodiment of the present invention；
Fig. 4 is the flow chart of the control method of the refrigerant radiator of a specific example according to the present invention；And
Fig. 5 is the flow chart of the control method of the refrigerant radiator of another specific example according to the present invention.
Appended drawing reference:
Compressor 10, outdoor heat exchanger 20, orifice union 30, refrigerant radiating subassembly 40, refrigerant heat-dissipating pipe 41, refrigerant heat dissipation
Module 42, control module 50, oil eliminator 60, four-way valve 70, first throttle element EXV and the first bypass elements SV.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
The control method and refrigerant of the refrigerant radiator proposed according to embodiments of the present invention described with reference to the accompanying drawings
Radiator.
Fig. 1 is the flow chart of the control method of refrigerant radiator according to an embodiment of the present invention.
In an embodiment of the present invention, refrigerant radiator may include compressor, outdoor heat exchanger, orifice union and refrigerant
Radiating subassembly, the exhaust outlet of compressor are connected with one end of outdoor heat exchanger, and the other end of outdoor heat exchanger passes through orifice union
It is connected with the entrance of refrigerant radiating subassembly, orifice union may include restricting element and bypass elements in parallel.
As shown in Figure 1, the control method of the refrigerant radiator can comprise the following steps that
S1, control refrigerant radiator is run in a chiller mode, and obtains the dew-point temperature around refrigerant radiating subassembly, with
And obtain the Current Temperatures of refrigerant radiating subassembly.
Specifically, the environment temperature and ambient humidity around refrigerant radiating subassembly can be detected by Temperature Humidity Sensor, so
Afterwards according to the environment temperature of detection and ambient humidity, the dew-point temperature around refrigerant radiating subassembly is obtained by computation of table lookup；Or
Person detects the environment temperature around refrigerant radiating subassembly by temperature sensor, then according to refrigerant radiator region
General environment humidity and detection environment temperature, pass through computation of table lookup obtain refrigerant radiating subassembly around dew-point temperature.
For example, being by the maximum value that the acquisition long-term general environment humidity in refrigerant radiator region is tested in experiment
75%, then the ambient humidity of refrigerant radiator region (can be typically chosen slightly severe feelings for 80% with value
Condition), also, the environment temperature around the refrigerant radiating subassembly of detection be 10 DEG C when, by searching for table 1 can obtain refrigerant dissipate
Dew-point temperature around hot component is 6.7 DEG C.
Table 1
In addition, in practical applications, refrigerant radiating subassembly may include refrigerant heat-dissipating pipe and refrigerant radiating module, refrigerant heat dissipation
Module is arranged on refrigerant heat-dissipating pipe, and entrance of the one end of refrigerant heat-dissipating pipe as refrigerant radiating subassembly is connected with orifice union,
Wherein, the Current Temperatures of refrigerant radiating subassembly can be the tube temperature of refrigerant heat-dissipating pipe.More specifically, as shown in Fig. 2, refrigerant radiates
The Current Temperatures of component can be the inlet temperature TL1, i.e. the inlet temperature TL1 of refrigerant radiating subassembly of refrigerant heat-dissipating pipe；Alternatively,
As shown in figure 3, the Current Temperatures of refrigerant radiating subassembly can be the outlet temperature TL2 of refrigerant heat-dissipating pipe, i.e. refrigerant radiating subassembly
Outlet temperature TL2.
S2 controls orifice union according to the Current Temperatures of dew-point temperature and refrigerant radiating subassembly.
According to one embodiment of present invention, when orifice union includes first throttle element and the first bypass elements, step
Rapid S2 can include: S21 judges the difference whether Current Temperatures are less than or equal between dew-point temperature and the first preset temperature and holds
Continuous first preset time；S22, if it is, the aperture of control first throttle element tunes up the first default aperture, and in delay the
After two preset times, step S21 is repeated, until the aperture of first throttle element is tuned up to preset maximum opening；S23,
If it is not, then controlling according to normal control mode first throttle element, and controls the first bypass elements and be in closing shape
State.Wherein, the first preset temperature, the first preset time, the second preset time, the first default aperture and preset maximum opening can
It is demarcated according to the actual situation, for example, the first default aperture can be 24 steps, preset maximum opening can be 480 steps.
Specifically, by taking refrigerant radiator shown in Fig. 2 as an example, first throttle element is as main restricting element, Ke Yiwei
Electric expansion valve, the first bypass elements are assistant throttle component, can be solenoid valve.
When needing to radiate to electric-controlled plate etc. using refrigerant radiator, by switching over control to four-way valve,
So that refrigerant radiator is run in a chiller mode, meanwhile, according to practical radiating requirements, according to normal control mode to first segment
Fluid element is controlled, and is controlled the first bypass elements and be in close state.At this point, being come out from the exhaust outlet of compressor cold
Matchmaker, passes sequentially through oil eliminator and four-way valve enters outdoor heat exchanger, in outdoor heat exchanger after heat release, passes through first throttle member
Enter refrigerant radiating subassembly after part throttling, absorbs the heat that electric-controlled plate distributes, radiate to electric-controlled plate.
In radiation processes, the dew-point temperature TOL around refrigerant radiating subassembly is obtained in real time, and obtain refrigerant radiating subassembly
Inlet temperature TL1 then judge whether inlet temperature TL1 is less than or equal between dew-point temperature TOL and the first preset temperature
Difference and continue the first preset time.If it is, illustrating that the temperature of refrigerant radiating subassembly is relatively low, it is existing to be easy to appear moisture condensation
As that the aperture of first throttle element can be tuned up to the first default aperture (such as 24 steps) at this time, to reduce the throttling effect of restricting element
It answers, improves the temperature of refrigerant radiating subassembly, and after the second preset time of stable operation, whether judge inlet temperature TL1 again
Less than or equal to the difference between dew-point temperature TOL and the first preset temperature and continue the first preset time.If still less than etc.
In, then continue to tune up the aperture of first throttle element into the first default aperture (such as 24 steps), and after second preset time that is delayed,
Judge again ..., repeat, until the aperture of first throttle element is tuned up to preset maximum opening.In the process, such as
Duration of the fruit inlet temperature TL1 greater than dew-point temperature TOL or inlet temperature TL1 less than or equal to dew-point temperature TOL is less than
First preset time, then after adjusting, the temperature of refrigerant radiating subassembly has built up explanation, is not in dew condensation phenomenon, at this time
Stopping carries out the aperture of first throttle element to tune up control, and controls according to normal control mode to first throttle element
System, while controlling the first bypass elements and being in close state.
The control method of refrigerant radiator according to an embodiment of the present invention, when the temperature of refrigerant radiating subassembly is too low,
Control is tuned up by carrying out aperture to first throttle element, to reduce the restriction effect of first throttle element, to improve refrigerant
The inlet temperature of radiating subassembly guarantees that the temperature of refrigerant radiating subassembly maintains dew-point temperature or more, prevents from leading because temperature is too low
Control panel moisture condensation is caused, and then short circuit occurs and burns out control panel.
Further, according to one embodiment of present invention, when the aperture of first throttle element is tuned up to preset maximum
When aperture, further includes: S221 judges whether Current Temperatures are less than or equal to the sum of dew-point temperature and the second preset temperature and continue
First preset time；S222 if it is, control first throttle element keeps preset maximum opening constant, and controls first
Bypass elements are in the open state.Wherein, the second preset temperature can be demarcated according to the actual situation.
That is, first carrying out aperture when the temperature of refrigerant radiating subassembly is relatively low to first throttle element and tuning up control
System, to improve the temperature of refrigerant radiating subassembly, but if the aperture of first throttle element has reached preset maximum opening, still
The temperature of refrigerant radiating subassembly can not be made to be higher than dew-point temperature, can control first throttle element to be maintained at preset maximum at this time
Aperture, while controlling the first bypass elements and being in fully open state, to bypass more high temperature refrigerants to refrigerant radiating subassembly, mention
The inlet temperature of high refrigerant radiating subassembly guarantees that the temperature of refrigerant radiating subassembly maintains dew-point temperature or more, prevents because of temperature
It is too low that control panel is caused to condense, and then short circuit occurs and burns out control panel.
It should be noted that in an embodiment of the present invention, since the Current Temperatures of refrigerant radiating subassembly are refrigerant heat dissipation
Therefore the inlet temperature or outlet temperature of component calculate the difference between the Current Temperatures and dew-point temperature of refrigerant radiating subassembly
Value has a numerical difference, and temperature obtains position difference, and the numerical difference is also different, i.e., the second preset temperature is also different.
According to one embodiment of present invention, when Current Temperatures are the inlet temperature of refrigerant radiating subassembly, second is default
Temperature is less than zero, for example, the second preset temperature can be -2 DEG C；When Current Temperatures are the outlet temperature of refrigerant radiating subassembly,
Second preset temperature is greater than zero, for example, the second preset temperature can be 3 DEG C.
The control method of refrigerant radiator according to an embodiment of the present invention, when the temperature of refrigerant radiating subassembly is too low,
The temperature of refrigerant radiating subassembly can not be still made to be higher than dew point if first throttle element has been switched on to preset maximum opening
Temperature, then control that the first bypass elements are in the open state, to further increase the inlet temperature of refrigerant radiating subassembly, guarantees cold
The temperature of matchmaker's radiating subassembly maintains dew-point temperature or more, prevents from causing control panel to condense because temperature is too low, and then short circuit occurs
Burn out control panel.
Further, according to one embodiment of present invention, after step S222, further includes: S223 judges current temperature
Whether degree is more than or equal to the sum of dew-point temperature and third preset temperature and continues the first preset time；S224, if it is, control
First throttle element processed keeps preset maximum opening constant, and controls the first bypass elements and be in close state, and further
Judge whether Current Temperatures are more than or equal to the sum of dew-point temperature and the 4th preset temperature and continue the first preset time；S225, such as
Fruit is then to control according to normal control mode first throttle element, and control the first bypass elements and be in close state.
Wherein, third preset temperature and the 4th preset temperature can be demarcated according to the actual situation, and third preset temperature
Greater than the second preset temperature, the 4th preset temperature is greater than third preset temperature, for example, third preset temperature can be default for second
Temperature adds the 5th preset temperature, wherein the 5th preset temperature is the value between 2 DEG C -10 DEG C, and the 4th preset temperature can be the
Two preset temperatures add the 6th preset temperature, wherein the 6th preset temperature can be the value between 2 DEG C -10 DEG C.
Specifically, being opened into preset maximum opening in control first throttle element, and control at the first bypass elements
After fully open state, if inlet temperature TL1 is more than or equal to the sum of dew-point temperature TOL and third preset temperature and continues
First preset time, then the temperature of explanation refrigerant radiating subassembly after adjusting is higher than dew-point temperature certain value, can control the at this time
One bypass elements are in close state.It is delayed after a period of time, judges whether inlet temperature TL1 is more than or equal to dew-point temperature TOL
With the sum of the 4th preset temperature and continue the first preset time.If it is, illustrating that the temperature of current refrigerant radiating subassembly compares
Height is not in dew condensation phenomenon, can restore the normal control to first throttle element at this time, while controlling the first bypass elements and protecting
It holds in off position, to meet the practical radiating requirements of control panel.
To make those skilled in the art better understand the present invention.Fig. 4 is the cold of specific example according to the present invention
The flow chart of the control method of matchmaker's radiator.As shown in figure 4, the control method of the refrigerant radiator may include following step
It is rapid:
S101, control refrigerant radiator are run in a chiller mode.
S102 obtains the inlet temperature TL1 of the dew-point temperature TOL and refrigerant radiating subassembly around refrigerant radiating subassembly.
S103, judge the difference whether TL1 is less than or equal between T0L and the first preset temperature A and continue first it is default when
Between t1.If so, executing step S105；If not, executing step S104.
S104, first throttle element EXV normal control, the first bypass elements SV are closed.
The aperture of EXV is tuned up the first default aperture P1 by S105, and after second preset time t 2 that is delayed, return step
S103 continues to judge.
S106 is delayed after a period of time when the aperture of EXV reaches preset maximum opening, judges whether TL1 is less than
In the difference of T0L and the second preset temperature A0 (such as 2 DEG C) and continue the t1 time.If so, executing step S107；If not, executing
Step S108.
S107, EXV keep current maximum opening, and SV is opened.
S108, be delayed a period of time after, judge TL1 whether be more than or equal to the sum of T0L and third preset temperature (A1-A0),
And continue the t1 time.If so, executing step S109；If not, return step S106.
S109, EXV keep current maximum opening, and SV is closed.
S110, be delayed a period of time after, judge TL1 whether be more than or equal to the sum of T0L and the 4th preset temperature (A2-A0),
And continue the t1 time.If so, executing step S111；If not, return step S106.
S111, EXV enter normal control, and SV is closed.
Fig. 5 is the flow chart of the control method of the refrigerant radiator of another specific example according to the present invention.Such as Fig. 5 institute
Show, the control method of the refrigerant radiator can comprise the following steps that
S201, control refrigerant radiator are run in a chiller mode.
S202 obtains the outlet temperature TL2 of the dew-point temperature TOL and refrigerant radiating subassembly around refrigerant radiating subassembly.
S203, judge the difference whether TL2 is less than or equal between T0L and the first preset temperature A and continue first it is default when
Between t1.If so, executing step S205；If not, executing step S204.
S204, first throttle element EXV normal control, the first bypass elements SV are closed.
The aperture of EXV is tuned up the first default aperture P1 by S205, and after second preset time t 2 that is delayed, return step
S203 continues to judge.
S206 is delayed after a period of time when the aperture of EXV reaches preset maximum opening, judges whether TL2 is less than
In the sum of T0L and the second preset temperature A0 (such as 3 DEG C) and continue the t1 time.If so, executing step S207；If not, executing
Step S208.
S207, EXV keep current maximum opening, and SV is opened.
S208, be delayed a period of time after, judge TL2 whether be more than or equal to the sum of T0L and third preset temperature (A1+A0),
And continue the t1 time.If so, executing step S209；If not, return step S206.
S209, EXV keep current maximum opening, and SV is closed.
S210, be delayed a period of time after, judge TL2 whether be more than or equal to the sum of T0L and the 4th preset temperature (A2+A0),
And continue the t1 time.If so, executing step S211；If not, return step S206.
S212, EXV enter normal control, and SV is closed.
In conclusion the control method of refrigerant radiator according to an embodiment of the present invention, in control refrigerant radiator
When running in a chiller mode, the dew-point temperature around refrigerant radiating subassembly is obtained, while obtaining the current temperature of refrigerant radiating subassembly
Degree, then, controls orifice union according to the Current Temperatures of dew-point temperature and refrigerant gallbladder-heat component, so that refrigerant heat dissipation group
The temperature of part is maintained at dew-point temperature or more, to effectively prevent leading to automatically controlled plate surface because the temperature of refrigerant radiating subassembly is too low
Moisture condensation damage.
Fig. 2 is the block diagram of refrigerant radiator according to an embodiment of the invention, and Fig. 3 is another according to the present invention
The block diagram of the refrigerant radiator of one embodiment.As shown in Figure 2 or Figure 3, refrigerant radiator can include: compression
Machine 10, outdoor heat exchanger 20, orifice union 30, refrigerant radiating subassembly 40 and control module 50.
Wherein, orifice union 30 includes restricting element and bypass elements in parallel.The exhaust outlet of compressor 10 is changed with outdoor
One end of hot device 20 is connected, and the other end of outdoor heat exchanger 20 passes through the entrance phase of orifice union 30 and refrigerant radiating subassembly 40
Even.Control module 50 is run in a chiller mode for controlling refrigerant radiator, and obtains the dew around refrigerant radiating subassembly 40
Point temperature, and the Current Temperatures of refrigerant radiating subassembly 40 are obtained, and according to the current of dew-point temperature and refrigerant radiating subassembly 40
Temperature controls orifice union, so that the temperature of refrigerant radiating subassembly 40 is maintained at dew-point temperature or more.
According to one embodiment of present invention, when orifice union 30 includes first throttle element EXV and the first bypass elements
When SV, when control module 50 controls orifice union 30 according to the Current Temperatures of dew-point temperature and refrigerant radiating subassembly 40,
Wherein, control module 50 judges difference that whether Current Temperatures are less than or equal between dew-point temperature and the first preset temperature and holds
Continuous first preset time；If so, the aperture that control module 50 then controls first throttle element EXV tunes up the first default aperture,
And after second preset time that is delayed, judge whether Current Temperatures are less than or equal between dew-point temperature and the first preset temperature again
Difference and continue the first preset time, until the aperture of first throttle element EXV is tuned up to preset maximum opening；If
No, control module 50 then controls first throttle element EXV according to normal control mode, and controls the first bypass elements SV
It is in close state.
Further, according to one embodiment of present invention, when the aperture of first throttle element EXV tune up to it is preset most
When big aperture, control module 50 also judges whether Current Temperatures are less than or equal to the sum of dew-point temperature and the second preset temperature and hold
Continuous first preset time；Keep preset maximum opening constant if so, control module 50 then controls first throttle element EXV,
And it is in the open state to control the first bypass elements SV.
According to one embodiment of present invention, keep preset maximum opening constant in control first throttle element EXV, and
Control the first bypass elements SV it is in the open state after, control module 50 also judges whether Current Temperatures are more than or equal to dew point temperature
Degree and the sum of third preset temperature and continue the first preset time, wherein third preset temperature is greater than the second preset temperature；Such as
Fruit is that control module 50 then controls first throttle element EXV and keeps preset maximum opening constant, and controls the first bypass elements
SV is in close state, and further judge Current Temperatures whether be more than or equal to the sum of dew-point temperature and the 4th preset temperature and
Continue the first preset time, wherein the 4th preset temperature is greater than third preset temperature；If so, control module 50 is then according to just
Normal control mode controls first throttle element EXV, and controls the first bypass elements SV and be in close state.
According to one embodiment of present invention, Current Temperatures are the inlet temperature or refrigerant heat dissipation of refrigerant radiating subassembly 40
The outlet temperature of component 40, wherein when Current Temperatures are the inlet temperature of refrigerant radiating subassembly 40, the second preset temperature is less than
Zero；When Current Temperatures are the outlet temperature of refrigerant radiating subassembly 40, the second preset temperature is greater than zero.
It should be noted that undisclosed details in the refrigerant radiator of the embodiment of the present invention, please refers to of the invention real
Details disclosed in the control method of the refrigerant radiator of example is applied, specific which is not described herein again.
Refrigerant radiator according to an embodiment of the present invention, control module control refrigerant radiator are transported in a chiller mode
Row, and the dew-point temperature around refrigerant radiating subassembly is obtained, while obtaining the Current Temperatures of refrigerant radiating subassembly, and according to dew point
The Current Temperatures of temperature and refrigerant radiating subassembly control orifice union, so that the temperature of refrigerant radiating subassembly is maintained at dew
More than point temperature, to effectively prevent that electric-controlled plate surface sweating is caused to damage because the temperature of refrigerant radiating subassembly is too low.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal 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 specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (8)
1. a kind of control method of refrigerant radiator, which is characterized in that the refrigerant radiator includes that compressor, outdoor are changed
Hot device, orifice union and refrigerant radiating subassembly, the exhaust outlet of the compressor is connected with one end of the outdoor heat exchanger, described
The other end of outdoor heat exchanger is connected by the orifice union with the entrance of the refrigerant radiating subassembly, the orifice union packet
Restricting element and bypass elements in parallel are included, the described method comprises the following steps:
S1 controls the refrigerant radiator and runs in a chiller mode, and obtains the dew point temperature around the refrigerant radiating subassembly
Degree, and obtain the Current Temperatures of the refrigerant radiating subassembly；
S2 controls the orifice union according to the Current Temperatures of the dew-point temperature and the refrigerant radiating subassembly, with
The temperature of the refrigerant radiating subassembly is set to be maintained at the dew-point temperature or more, wherein when the orifice union includes first segment
When fluid element and the first bypass elements, the step S2 includes:
S21 judges the difference whether Current Temperatures are less than or equal between the dew-point temperature and the first preset temperature and holds
Continuous first preset time；
S22, if it is, the aperture for controlling the first throttle element tunes up the first default aperture, and default in delay second
After time, step S21 is repeated, until the aperture of the first throttle element is tuned up to preset maximum opening；
S23 if it is not, then controlling according to normal control mode the first throttle element, and is controlled by the of described first
Logical element is in close state.
2. the control method of refrigerant radiator as described in claim 1, which is characterized in that when the first throttle element
When aperture is tuned up to preset maximum opening, further includes:
S221, judges whether the Current Temperatures are less than or equal to the sum of the dew-point temperature and the second preset temperature and continue institute
State the first preset time；
S222 keeps the preset maximum opening constant if it is, controlling the first throttle element, and controls described the
One bypass elements are in the open state.
3. the control method of refrigerant radiator as claimed in claim 2, which is characterized in that after step S222, also wrap
It includes:
S223, judges whether the Current Temperatures are more than or equal to the sum of the dew-point temperature and third preset temperature and continue institute
State the first preset time, wherein the third preset temperature is greater than second preset temperature；
S224 keeps the preset maximum opening constant if it is, controlling the first throttle element, and controls described the
One bypass elements are in close state, and further judge whether the Current Temperatures are more than or equal to the dew-point temperature and the 4th
The sum of preset temperature and lasting first preset time, wherein the 4th preset temperature is greater than the default temperature of the third
Degree；
S225 if it is, controlling according to normal control mode the first throttle element, and is controlled by the of described first
Logical element is in close state.
4. the control method of refrigerant radiator as claimed in claim 2, which is characterized in that the Current Temperatures are described cold
The outlet temperature of the inlet temperature of matchmaker's radiating subassembly or the refrigerant radiating subassembly, wherein
When the Current Temperatures are the inlet temperature of the refrigerant radiating subassembly, second preset temperature is less than zero；
When the Current Temperatures are the outlet temperature of the refrigerant radiating subassembly, second preset temperature is greater than zero.
5. a kind of refrigerant radiator characterized by comprising
Compressor；
Outdoor heat exchanger；
Orifice union, the orifice union include restricting element and bypass elements in parallel；
Refrigerant radiating subassembly, the exhaust outlet of the compressor are connected with one end of the outdoor heat exchanger, the outdoor heat exchanger
The other end be connected with the entrance of the refrigerant radiating subassembly by the orifice union；
Control module, the control module is run in a chiller mode for controlling the refrigerant radiator, and is obtained described cold
Dew-point temperature around matchmaker's radiating subassembly, and the Current Temperatures of the refrigerant radiating subassembly are obtained, and according to the dew point temperature
The Current Temperatures of degree and the refrigerant radiating subassembly control the orifice union, so that the temperature of the refrigerant radiating subassembly
Degree is maintained at the dew-point temperature or more, wherein when the orifice union includes first throttle element and the first bypass elements,
The control module controls the orifice union according to the Current Temperatures of the dew-point temperature and the refrigerant radiating subassembly
When processed, wherein
The control module judges whether the Current Temperatures are less than or equal between the dew-point temperature and the first preset temperature
Difference and continue the first preset time；
If so, the aperture that the control module then controls the first throttle element tunes up the first default aperture, and it is being delayed
After second preset time, judge whether the Current Temperatures are less than or equal between the dew-point temperature and the first preset temperature again
Difference and continue the first preset time, until the aperture of the first throttle element is tuned up to preset maximum opening；
If not, the control module then controls the first throttle element according to normal control mode, and control institute
The first bypass elements are stated to be in close state.
6. refrigerant radiator as claimed in claim 5, which is characterized in that when the aperture of the first throttle element tune up to
When preset maximum opening,
The control module also judge the Current Temperatures whether be less than or equal to the sum of the dew-point temperature and the second preset temperature,
And continue first preset time；
It keeps the preset maximum opening constant if so, the control module then controls the first throttle element, and controls
It is in the open state to make first bypass elements.
7. refrigerant radiator as claimed in claim 6, which is characterized in that controlling described in the first throttle element holding
Preset maximum opening is constant, and control first bypass elements it is in the open state after,
The control module also judge the Current Temperatures whether be more than or equal to the sum of the dew-point temperature and third preset temperature,
And continue first preset time, wherein the third preset temperature is greater than second preset temperature；
It keeps the preset maximum opening constant if so, the control module then controls the first throttle element, and controls
It makes first bypass elements to be in close state, and further judges whether the Current Temperatures are more than or equal to the dew point temperature
The sum of degree and the 4th preset temperature and lasting first preset time, wherein the 4th preset temperature is greater than the third
Preset temperature；
If so, the control module then controls the first throttle element according to normal control mode, and control institute
The first bypass elements are stated to be in close state.
8. refrigerant radiator as claimed in claim 6, which is characterized in that the Current Temperatures are the refrigerant radiating subassembly
Inlet temperature or the refrigerant radiating subassembly outlet temperature, wherein
When the Current Temperatures are the inlet temperature of the refrigerant radiating subassembly, second preset temperature is less than zero；
When the Current Temperatures are the outlet temperature of the refrigerant radiating subassembly, second preset temperature is greater than zero.
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| CN201611264435.2A CN106686948B (en) | 2016-12-30 | 2016-12-30 | Refrigerant radiator and its control method |
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| CN107270487A (en) * | 2017-07-10 | 2017-10-20 | 珠海格力电器股份有限公司 | Control the methods, devices and systems of air-conditioning driving plate radiating |
| CN108731206A (en) * | 2018-06-20 | 2018-11-02 | 广东美的暖通设备有限公司 | Refrigerant cooling device and its control method and air-conditioning system |
| CN110677014B (en) * | 2019-09-30 | 2021-09-07 | 珠海格力电器股份有限公司 | Cooling system and method of frequency converter capable of uniformly cooling frequency converter and air conditioning equipment |
| CN113606821A (en) * | 2021-08-31 | 2021-11-05 | 美的集团武汉暖通设备有限公司 | Air source heat pump device, control method and storage medium |
| CN113993361B (en) * | 2021-12-31 | 2022-04-22 | 天津飞旋科技股份有限公司 | Cooling water unit frequency converter refrigerant cooling system |
| CN114353412A (en) * | 2022-01-12 | 2022-04-15 | 广东美的暖通设备有限公司 | Control method and device of liquid cooling unit, readable storage medium and liquid cooling unit |
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| EP2518422A1 (en) * | 2009-12-22 | 2012-10-31 | Daikin Industries, Ltd. | Refrigeration device |
| CN204630203U (en) * | 2015-05-12 | 2015-09-09 | 广东美的制冷设备有限公司 | Air-conditioner |
| CN105240996A (en) * | 2015-09-24 | 2016-01-13 | 芜湖美智空调设备有限公司 | Method for controlling air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2518422A1 (en) * | 2009-12-22 | 2012-10-31 | Daikin Industries, Ltd. | Refrigeration device |
| CN204630203U (en) * | 2015-05-12 | 2015-09-09 | 广东美的制冷设备有限公司 | Air-conditioner |
| CN105240996A (en) * | 2015-09-24 | 2016-01-13 | 芜湖美智空调设备有限公司 | Method for controlling air conditioner |
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