CN108019902A - A kind of air conditioning circuit board cooling means and device - Google Patents
A kind of air conditioning circuit board cooling means and device Download PDFInfo
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- CN108019902A CN108019902A CN201610932868.4A CN201610932868A CN108019902A CN 108019902 A CN108019902 A CN 108019902A CN 201610932868 A CN201610932868 A CN 201610932868A CN 108019902 A CN108019902 A CN 108019902A
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Abstract
The invention discloses a kind of air conditioning circuit board cooling means and device, belong to field of air conditioning.This method includes：Obtain the operating current of circuit board；When operating current is more than predetermined current, turn-on flow rate valve.The device includes galvanometer and controller；Galvanometer is used for the operating current of measuring circuit plate；When the operating current of amperometric measurement is more than predetermined current, controller is used for turn-on flow rate valve.Cooling means according to embodiments of the present invention, obtains the operating current of circuit board, when the operating current of circuit board is more than predetermined current, turn-on flow rate valve；Cooling device according to embodiments of the present invention, galvanometer, the operating current for measuring circuit plate；When the operating current of amperometric measurement is more than predetermined current, controller is used for turn-on flow rate valve, consistent according to the result of the operating current control circuit plate temperature of the diverse location of circuit board since the operating current of circuit board is the electric current of whole circuit board.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air conditioning circuit board cooling means and device.
Background technology
The service life of the controller of refrigeration system and its operating temperature are closely related, if the heat that the controller course of work produces
Cannot distribute in time can influence its job stability and reliability.
Prior art discloses an air conditioner, including compressor, condenser, restricting element and evaporator, and it is sequentially connected in series
Forming circuit；An automatically controlled radiating subassembly in parallel, the automatically controlled radiating subassembly on the muffler of compressor and the air outlet pipe of evaporator
Including electric-controlled plate and the heat-dissipating pipe for radiating to electric-controlled plate, and the control valve of the flow for adjusting the heat-dissipating pipe
Component；Control valve group can adjust the cold medium flux in heat-dissipating pipe in real time according to the temperature of electric-controlled plate, cold in heat-dissipating pipe
Matchmaker exchanges heat to reduce the temperature of electric-controlled plate with electric-controlled plate, so as to ensure the stability of automatically controlled plate temperature.Automatically controlled plate temperature is to pass through
Temperature sensor measurement, temperature sensor can only be positioned over a certain fixed position of electric-controlled plate, and the position that electric-controlled plate is different
Temperature may be different, it may appear that same working condition, temperature sensor control electric-controlled plate when being put in the different position of electric-controlled plate
The result of temperature is inconsistent.
The content of the invention
An embodiment of the present invention provides a kind of air conditioning circuit board cooling means and device, it is intended to solves same working condition
Under, the problem of controlling the result of electric-controlled plate temperature inconsistent when temperature sensor is put in electric-controlled plate different position.
On the one hand, an embodiment of the present invention provides a kind of air conditioning circuit board cooling means, cooling means to include：
Obtain the operating current of circuit board；
When operating current is more than predetermined current, turn-on flow rate valve.
On the other hand, an embodiment of the present invention provides a kind of air conditioning circuit board cooling device, cooling device include galvanometer,
Flow valve and controller；
Galvanometer is used for the operating current of measuring circuit plate；
When the operating current of amperometric measurement is more than predetermined current, controller is used for turn-on flow rate valve.
In technical solution disclosed by the embodiments of the present invention, since the operating current of circuit board is the electric current of whole circuit board,
It is consistent according to the result of the operating current control circuit plate temperature of the diverse location of circuit board.
Brief description of the drawings
Attached drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining the principle of the present invention together with specification.
Fig. 1 is a kind of flow diagram of air conditioning circuit board cooling means according to an exemplary embodiment；
Fig. 2 is a kind of flow diagram of air conditioning circuit board cooling means according to an exemplary embodiment；
Fig. 3 is a kind of structure chart of air conditioning circuit board cooling device according to an exemplary embodiment.
Description of reference numerals：1st, galvanometer；2nd, muffler；3rd, cooling circuit；4th, flow valve；5th, circuit board；6th, expansion valve；
7th, controller.
Embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Embodiment only represents possible change.Unless explicitly requested, otherwise single components and functionality is optional, and
And the order of operation can change.The part of some embodiments and feature can be included in or replace other embodiments
Part and feature.The scope of embodiment of the present invention includes the gamut of claims, and the institute of claims
There is obtainable equivalent.Herein, each embodiment can individually or generally be represented that this is only with term " invention "
It is merely for convenience, and if in fact disclosing the invention more than one, it is not meant to automatically limit the scope of the application
For any single invention or inventive concept.Herein, relational terms such as first and second and the like are used only for one
Entity either operates to distinguish with another entity or operation to be existed without requiring or implying between these entities or operation
Any actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant be intended to it is non-exclusive
Property includes, so that process, method or equipment including a series of elements not only include those key elements, but also including
Other elements that are not explicitly listed.Each embodiment herein is described by the way of progressive, and each embodiment stresses
Be all difference with other embodiment, between each embodiment identical similar portion mutually referring to.For implementing
For method, product etc. disclosed in example, due to its with embodiment disclosed in method part it is corresponding, so the comparison of description is simple
Single, reference may be made to the description of the method.
As shown in Figure 1, an embodiment of the present invention provides a kind of cooling means, including：
S101, the operating current for obtaining circuit board；
S102, when operating current is more than predetermined current, turn-on flow rate valve.
The electric current of circuit board can be measured by galvanometer, can also be measured with the instrument of other measurement electric currents；Electricity
The resistance that road plate selectes later circuit board determines that the heat dissipation capacity of circuit board is as the electric current of circuit board increases and increases.
Predetermined current can be the highest safe current of circuit board or according to the highest safe current of circuit board and
The electric current of setting, as long as ensureing that circuit board works normally under predetermined current, when the working environment heat-sinking capability of circuit board
Gao Shi, the height that predetermined current can be set, in order to improve the heat-sinking capability of circuit board can also be set around circuit board it is cold
But fan；The predetermined current of circuit board can start setting up, and can also be adjusted according to the heat-sinking capability of circuit board 1 in the later stage, only
Ensure that the circuit board heat that long-term normal work produces under predetermined current can dissipate, the temperature of circuit board will not gradually rise
.
When the operating current of circuit board is less than or equal to predetermined current, the caloric value that circuit board produces can dissipate, circuit
The temperature of plate will not gradually rise.
When the operating current of circuit board is more than predetermined current, the heat that circuit board distributes is less than the heat that circuit board produces
Amount, the temperature of circuit board gradually rises, if the operating current of circuit board is more than predetermined current for a long time, ultimately result in circuit board or
Electronic component on circuit board can not work normally, damage or the problems such as service life shortens.
Turn-on flow rate valve can be the flow of flow valve is adjusted from scratch or make the flow of flow valve from
It is small to arrive big adjusting.
Cooling means according to embodiments of the present invention, obtains the operating current of circuit board, when the operating current of circuit board is big
When predetermined current, turn-on flow rate valve, since the operating current of circuit board is the electric current of whole circuit board, according to circuit board not
It is consistent with the result of the operating current control circuit plate temperature of position.
Further alternative, turn-on flow rate valve includes in step S102：
S1021, the flow value of turn-on flow rate valve are to first flow；
S1022, obtain caloric value of the circuit board unit interval from predetermined current to operating current；
S1023, the flow value of acquisition unit interval turn-on flow rate valve flow through the heat dissipation capacity of circuit board to first flow refrigerant；
When caloric value is more than heat dissipation capacity, the flow value for adjusting flow valve is more than first-class to second flow, second flow
Amount；
When caloric value is less than heat dissipation capacity, the flow value for adjusting flow valve is less than first-class to the 3rd flow, the 3rd flow
Amount；
When caloric value is equal to heat dissipation capacity, keep flow valve flow constant.
First flow can be the maximal regulated flow of the minimal adjustment flow of flow valve or flow valve, may be used also
To be any flow of flow valve regulating flow quantity.
After first flow determines, heat dissipation capacity determines, caloric value determines.
As shown in Fig. 2, when caloric value is more than heat dissipation capacity, the flow of flow valve is tuned up, that is, adjusts flow valve to second
Flow, when caloric value is more than the heat dissipation capacity that flow valve is second flow, tunes up the flow of flow valve, constantly tunes up flow again
The flow of valve, when the flow of flow valve is the n-th flow, wherein the n-th flow is more than or equal to the flow adjusted twice, fever
Amount is less than or equal to the heat dissipation capacity that flow valve is the n-th flow, can no longer adjust the flow of flow valve, keep the flow of flow valve not
Become work.
It can start to set a less flow to flow valve, gradually tune up flow, prevent the stream of flow valve tune
Amount is too big, and caloric value is far smaller than heat dissipation capacity, and circuit board temperature quickly reduces and produces condensate phenomenon.
As shown in Fig. 2, when caloric value is less than heat dissipation capacity, the flow of flow valve is turned down, that is, adjusts flow valve to the 3rd
Flow, when caloric value is less than the heat dissipation capacity that flow valve is the 3rd flow, turns the flow of flow valve down, constantly turns flow down again
The flow of valve, when the flow of flow valve is m flows, wherein m flows are more than or equal to the flow adjusted twice, fever
Amount is more than or equal to the heat dissipation capacity that flow valve is m flows, can no longer adjust the flow of flow valve, keep the flow of flow valve not
Become work.
It can start to set a larger flow to flow valve, gradually turn flow down, prevent the stream of flow valve tune
Amount is too big, and caloric value is far smaller than heat dissipation capacity, and circuit board temperature quickly reduces and produces condensate phenomenon.
Heat dissipation capacity when caloric value more than flow valve for m flows, can also gradually tune up the flow of flow valve again, according to
Start as the method for smaller flow, gradually tune up the flow of flow valve；When caloric value is less than the heat dissipation that flow valve is the n-th flow
Amount, can also gradually turn the flow of flow valve down, according to the method started as larger flow, gradually turn the flow of flow valve down；
Until find the flow of a heat dissipation capacity flow valve suitable with caloric value.
It can be advanced row step that wherein step S1022, which obtains caloric value and the order of step S1023 acquisition heat dissipation capacities,
S1022 obtains caloric value and carries out step S1023 acquisition heat dissipation capacities again, or first carries out step S1023 acquisitions heat dissipation capacity and carry out again
Step S1022 obtains caloric value, can also be carried out at the same time step S1022 and obtain caloric value and step S1023 acquisition heat dissipation capacities.
Further alternative, caloric value is obtained in step S1022 to be included：
Caloric value is obtained according to equation below：
QHair=ICurrently 2R-IIt is default 2R
Wherein, QHairFor caloric value, ICurrentlyFor the operating current of circuit board, IIt is defaultFor the predetermined current of circuit board, R is circuit board
Resistance.
When operating current is less than predetermined current, QHairFor negative value, the caloric value of the generation of circuit board at this time is represented, can be by
Surrounding environment dissipates, and the temperature of circuit board will not gradually rise；When operating current is equal to predetermined current, QHairIt is zero, represents this
When circuit board generation caloric value, can just be dissipated by surrounding environment, the temperature of circuit board will not gradually rise.
Further alternative, heat dissipation capacity is obtained in step S1023 to be included：
S10231, obtain the flow value of turn-on flow rate valve to the regulated quantity of first flow refrigerant adjusting circuit board temperature；
S10232, acquisition unit interval flow through the refrigerant volume of flow valve；
S10233, the heat dissipation capacity according to the equation below unit of account time：
QDissipate=Δ TCPV
Wherein, QDissipateFor heat dissipation capacity, Δ T is the regulated quantity of temperature, and C is the specific heat capacity of refrigerant, and P is the density of refrigerant, and V is cold
Media accumulate.
It can be first that wherein step S10231, which obtains the regulated quantity of temperature and the order of step S10232 acquisition refrigerant volumes,
The regulated quantity for carrying out step S10231 acquisition temperature carries out step S10232 acquisition refrigerant volumes again, can also first carry out step
S10232 obtains refrigerant volume and carries out the regulated quantity that step S10231 obtains temperature again, can also be carried out at the same time step S10231 and obtain
The regulated quantity and step S10232 for taking temperature obtain refrigerant volume.
Optionally, the regulated quantity of step S10231 acquisitions temperature includes：
Obtain refrigerant and flow through the temperature T1 before cooling circuit；
Obtain refrigerant and flow through the temperature T2 after cooling circuit；
Determine that the difference that T2 subtracts T1 is regulated quantity.
The order for wherein obtaining temperature T1 and acquisition temperature T2 can be first to obtain temperature T1 obtain temperature T2 again, can also
First obtain temperature T2 and obtain temperature T1 again, temperature T1 and temperature T2. can also be obtained at the same time
The regulated quantity of the flow value of turn-on flow rate valve to first flow refrigerant adjusting circuit board temperature can also be that air-conditioning carries
Before the amount that sets, i.e., have the regulated quantity that flow valve corresponds to the temperature of flow in air-conditioning, then directly invoke.
The volume of refrigerant is related with the flow of refrigerant, after the flow of flow valve determines, flows through the body of flow valve refrigerant
Product is also assured that.Can be according to the volume of the aperture size unit of account time flow inflow-rate of water turbine valve of flow valve.
Optionally, the cooling means of the embodiments of the present invention, the operating current for obtaining circuit board can be interval acquiring
Or can also be to obtain in real time.When the electronic component on circuit board has sensing element, it can use and obtain in real time, so as to reality
When regulate and control, can be with interval acquiring operating current, to be spaced control when the electronic component on circuit board is heat-resist element
System, specific interval time can determine according to the heat resistance of circuit board, can also determine Separation control using laboratory facilities
Time, as long as ensure circuit board can work normally for a long time.
As shown in figure 3, an embodiment of the present invention provides a kind of cooling device, including：Galvanometer 1, flow valve 4 and controller
7；
Galvanometer 1 is used for the operating current of measuring circuit plate 5；
When the operating current that galvanometer 1 measures is more than predetermined current, controller 7 is used for turn-on flow rate valve 4.
Cooling device according to embodiments of the present invention, galvanometer 1 are used for the operating current of measuring circuit plate；When electric current measures
When the operating current of amount is more than predetermined current, controller 7 is used for turn-on flow rate valve 4, since the operating current of circuit board is whole
The electric current of circuit board, it is consistent according to the result of 5 temperature of operating current control board of the diverse location of circuit board 5.
Optionally, the cooling device of the embodiment of the present invention, controller 7 can be also used for：
The flow value of turn-on flow rate valve 4 is to first flow；
Obtain caloric value of 5 unit interval of circuit board from predetermined current to operating current；
The flow value for obtaining unit interval turn-on flow rate valve 4 flows through the heat dissipation capacity of circuit board 5 to first flow refrigerant；
When caloric value is more than heat dissipation capacity, the flow value for adjusting flow valve 4 is more than first-class to second flow, second flow
Amount；
When caloric value is less than heat dissipation capacity, for adjusting the flow value of flow valve 4 to the 3rd flow, the 3rd flow is less than the
One flow；
When caloric value is equal to heat dissipation capacity, for keeping 4 flow of flow valve constant.
First flow can be the maximal regulated flow of the minimal adjustment flow of flow valve 4 or flow valve 4, also
It can be any flow of 4 regulating flow quantity of flow valve.
After first flow determines, heat dissipation capacity determines, caloric value determines.
As shown in Fig. 2, when caloric value is more than heat dissipation capacity, the flow of flow valve 4 is tuned up, that is, adjusts flow valve 4 to the
Two flows, when caloric value is more than the heat dissipation capacity that flow valve 4 is second flow, tunes up the flow of flow valve 4, constantly tune up again
The flow of flow valve 4, when the flow of flow valve 4 is the n-th flow, wherein the n-th flow is more than or equal to the stream adjusted twice
Amount, caloric value are less than or equal to the heat dissipation capacity that flow valve 4 is the n-th flow, can no longer adjust the flow of flow valve 4, keep flow
The constant work of flow of valve 4.
It can start to set a less flow to flow valve 4, gradually tune up flow, prevent the tune of flow valve 4
Flow is too big, and caloric value is far smaller than heat dissipation capacity, and 5 temperature of circuit board quickly reduces and produces condensate phenomenon.
As shown in Fig. 2, when caloric value is less than heat dissipation capacity, the flow of flow valve 4 is turned down, that is, adjusts flow valve 4 to the
Three flows, when caloric value is less than the heat dissipation capacity that flow valve is the 3rd flow, turns the flow of flow valve 4 down, constantly turn down again
The flow of flow valve 4, when the flow of flow valve 4 is m flows, wherein m flows are more than or equal to the stream adjusted twice
Amount, caloric value are more than or equal to the heat dissipation capacity that flow valve 4 is m flows, can no longer adjust the flow of flow valve 4, keep flow
The constant work of flow of valve 4.
It can start to set a larger flow to flow valve 4, gradually turn flow down, prevent the tune of flow valve 4
Flow is too big, and caloric value is far smaller than heat dissipation capacity, and 5 temperature of circuit board quickly reduces and produces condensate phenomenon.
Heat dissipation capacity when caloric value more than flow valve 4 for m flows, can also gradually tune up the flow of flow valve 4, press again
The method started as smaller flow, gradually tunes up the flow of flow valve 4；When caloric value is less than the dissipating for the n-th flow of flow valve 4
Heat, can also gradually turn the flow of flow valve 4 down, according to the method started as larger flow, gradually turn the stream of flow valve 4 down
Amount；Until find the flow of a heat dissipation capacity flow valve suitable with caloric value 4.
Further alternative, the cooling device of the embodiment of the present invention, controller is additionally operable to：
According to caloric value of the equation below computing board unit interval from predetermined current to operating current；
QHair=ICurrently 2R-IIt is default 2R
Wherein, QHairFor caloric value, ICurrentlyFor the operating current of circuit board, IIt is defaultFor the predetermined current of circuit board, R is circuit board
Resistance.
When operating current is less than predetermined current, QHairFor negative value, the caloric value of the generation of circuit board 5 at this time is represented, can be with
Dissipated by surrounding environment, the temperature of circuit board 5 will not gradually rise；When operating current is equal to predetermined current, QHairIt is zero, represents
The caloric value of the generation of circuit board 5 at this time, can just be dissipated by surrounding environment, and the temperature of circuit board 5 will not gradually rise.
Further alternative, the cooling device of the embodiment of the present invention, controller is additionally operable to：
The flow value of turn-on flow rate valve 4 is obtained to the regulated quantity of first flow refrigerant adjusting circuit board temperature；
The acquisition unit interval flows through the refrigerant volume of flow valve；
Circuit board is flowed through to first flow refrigerant according to the flow value of equation below unit of account time turn-on flow rate valve 4
Heat dissipation capacity：
QDissipate=Δ TCPV
Wherein, QDissipateFor heat dissipation capacity, Δ T is the regulated quantity of temperature, and C is the specific heat capacity of refrigerant, and P is the density of refrigerant, and V is cold
Media accumulate.
Optionally, the cooling device of the embodiment of the present invention can include temperature sensor, and temperature sensor is used for：
Obtain refrigerant and flow through the temperature T1 before cooling circuit；
Obtain refrigerant and flow through the temperature T2 after cooling circuit；
Determine T2 subtract with the difference of T1 for turn-on flow rate valve 4 flow value to first flow refrigerant adjusting circuit board temperature
Regulated quantity.
Obtaining the regulated quantity of flow value to 5 temperature of first flow refrigerant adjusting circuit board of turn-on flow rate valve 4 can also be
The amount that air-conditioning is set in advance, i.e., have the regulated quantity that flow valve corresponds to the temperature of flow in air-conditioning, then directly invoke i.e.
Can.
The volume of refrigerant is related with the flow of refrigerant, after the flow of flow valve 4 determines, flows through the body of flow valve refrigerant
Product is also assured that.Can be according to the volume of the aperture size unit of account time flow inflow-rate of water turbine valve 4 of flow valve 4.
As shown in figure 3, optional, the cooling device of the embodiment of the present invention can also include：Muffler 2 and it is connected to back
Cooling circuit 3 on tracheae 2；Flow valve 4 is connected on cooling circuit 3, and cooling circuit 3 passes through 5 surface of circuit board.
When opening opens flow valve 4, refrigerant flows through the surface of circuit board 5, carries out heat exchange with circuit board 5, circuit board 5 is dissipated
The heat of hair is taken away.
Optionally, the cooling device of the embodiment of the present invention can also include：Expansion valve 6, expansion valve 6 are connected to muffler
On, muffler is in parallel with cooling circuit, and controller 7 is additionally operable to open expansion valve 6.Expansion valve 6 is used cooperatively with flow valve 4, is used
The flow of muffler 2 and 3 refrigerant of cooling circuit is flowed through in control, expansion valve 6 and flow valve 4 contribute to adjust refrigerant on pipeline
Flow, those skilled in the art can be replaced with other valve bodies that can adjust flow, as long as the stream of refrigerant can be adjusted
Amount.
Optionally, the maximum stream flow of the flow valve of the cooling device of the embodiment of the present invention can be with the flow phase of muffler
Together, to control the refrigerant of muffler all to flow through cooling circuit 3；The maximum stream flow of expansion valve can be with the flow phase of muffler
Together, to control the cold medium flux of muffler maximum or not have.
Optionally, the flow valve 4 of the cooling device of the embodiment of the present invention can be to adjust flow, or flow valve manually
4 can also be flow automatic regulation.
The stream of flow valve 4 can be adjusted manually according to the heat dissipation capacity of refrigerant in the caloric value of circuit board 5 and cooling circuit 3
Amount, until the caloric value of circuit board 5 is less than or equal to the heat dissipation capacity of refrigerant in cooling circuit 3.
Controller 7 can automatically adjust stream according to the caloric value and the heat dissipation capacity of refrigerant in cooling circuit 3 of circuit board 5
The flow of valve 4 is measured, until the caloric value of circuit board 5 is less than or equal to the heat dissipation capacity of refrigerant in cooling circuit 3.
It should be appreciated that the invention is not limited in the flow and structure that are described above and are shown in the drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by appended claim
System.
Claims (15)
- A kind of 1. air conditioning circuit board cooling means, it is characterised in that：The cooling means includes：Obtain the operating current of circuit board；When the operating current is more than predetermined current, turn-on flow rate valve.
- 2. air conditioning circuit board cooling means according to claim 1, it is characterised in that the turn-on flow rate valve includes：The flow value of the flow valve is opened to first flow；Obtain caloric value of the circuit board unit interval from predetermined current to operating current；The flow value for obtaining the unit interval unlatching flow valve flows through the heat dissipation capacity of the circuit board to first flow refrigerant；When the caloric value is more than the heat dissipation capacity, the flow value of the flow valve is adjusted to second flow, the second Amount is more than the first flow.
- 3. air conditioning circuit board cooling means according to claim 2, it is characterised in that described to open the flow valve bag Include：When the caloric value is less than the heat dissipation capacity, the flow value for adjusting the flow valve is flowed to the 3rd flow, the described 3rd Amount is less than the first flow.
- 4. the air conditioning circuit board cooling means according to Claims 2 or 3, it is characterised in that the acquisition circuit board unit Caloric value of the time from predetermined current to operating current includes：The caloric value is obtained according to equation below：QHair=ICurrently 2R-IIt is default 2RWherein, QHairFor the caloric value, ICurrentlyFor the operating current of the circuit board, IIt is defaultFor the predetermined current of the circuit board, R For the resistance of the circuit board.
- 5. the air conditioning circuit board cooling means according to Claims 2 or 3, it is characterised in that the acquisition unit interval opens The flow value for opening the flow valve flows through the heat dissipation capacity of the circuit board to first flow refrigerant and includes：Obtain the regulated quantity for opening the flow value of the flow valve to first flow refrigerant adjusting circuit board temperature；The acquisition unit interval flows through the refrigerant volume of the flow valve；According to the heat dissipation capacity of equation below unit of account time：QDissipate=Δ TCPVWherein, QDissipateFor heat dissipation capacity, Δ T is the regulated quantity of temperature, and C is the specific heat capacity of refrigerant, and P is the density of refrigerant, and V is refrigerant body Product.
- 6. air conditioning circuit board cooling means according to claim 5, it is characterised in that the stream for opening the flow valve The regulated quantity of value to first flow refrigerant adjusting circuit board temperature includes：Obtain refrigerant and flow through the temperature T1 before cooling circuit；Obtain refrigerant and flow through the temperature T2 after cooling circuit；Determine that the difference that the T2 subtracts the T1 is the regulated quantity.
- A kind of 7. air conditioning circuit board cooling device, it is characterised in that：The cooling device includes galvanometer, flow valve and control Device；The galvanometer is used for the operating current of measuring circuit plate；When the operating current of the amperometric measurement is more than predetermined current, the controller is used to open the flow Valve.
- 8. air conditioning circuit board cooling device according to claim 7, it is characterised in that the controller is additionally operable to：The flow value of the flow valve is opened to first flow；Obtain caloric value of the circuit board unit interval from predetermined current to operating current；The flow value for obtaining the unit interval unlatching flow valve flows through the heat dissipation capacity of the circuit board to first flow refrigerant；When the caloric value is more than the heat dissipation capacity, the flow value of the flow valve is adjusted to second flow, the second Amount is more than the first flow.
- 9. air conditioning circuit board cooling device according to claim 8, it is characterised in that the controller is additionally operable to：When the caloric value is less than the heat dissipation capacity, the flow value for adjusting flow valve is small to the 3rd flow, the 3rd flow In the first flow.
- 10. air conditioning circuit board cooling device according to claim 8 or claim 9, it is characterised in that the controller is additionally operable to root According to caloric value of the equation below computing board unit interval from predetermined current to operating current；QHair=ICurrently 2R-IIt is default 2RWherein, QHairFor the caloric value, ICurrentlyFor the operating current of the circuit board, IIt is defaultFor the predetermined current of the circuit board, R For the resistance of the circuit board.
- 11. air conditioning circuit board cooling device according to claim 8 or claim 9, it is characterised in that the controller is additionally operable to：Obtain the regulated quantity for opening the flow value of the flow valve to first flow refrigerant adjusting circuit board temperature；The acquisition unit interval flows through the refrigerant volume of the flow valve；The flow value that the flow valve is opened according to the equation below unit of account time flows through the circuit to first flow refrigerant The heat dissipation capacity of plate：QDissipate=Δ TCPVWherein, QDissipateFor heat dissipation capacity, Δ T is the regulated quantity of temperature, and C is the specific heat capacity of refrigerant, and P is the density of refrigerant, and V is refrigerant body Product.
- 12. air conditioning circuit board cooling device according to claim 11, it is characterised in that the cooling device includes temperature Sensor, the temperature sensor are used for：Obtain refrigerant and flow through the temperature T1 before cooling circuit；Obtain refrigerant and flow through the temperature T2 after cooling circuit；Determine that the T2 subtracts the difference of the T1 to open the flow value of the flow valve to first flow refrigerant adjusting circuit board The regulated quantity of temperature.
- 13. according to any air conditioning circuit board cooling device of claim 7 to 12, it is characterised in that the cooling device Further include：Muffler and the cooling circuit being connected on muffler；The flow valve is connected on cooling circuit, and the cooling circuit passes through the circuit board surface.
- 14. air conditioning circuit board cooling device according to claim 13, it is characterised in that the cooling device includes：It is swollen Swollen valve, the expansion valve are connected on muffler, and the muffler is in parallel with the cooling circuit, and the controller is additionally operable to out Open the expansion valve.
- 15. air conditioning circuit board cooling device according to claim 14, it is characterised in that the maximum stream flow of the flow valve Identical with the flow of muffler, the maximum stream flow of the expansion valve is identical with the flow of muffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610932868.4A CN108019902B (en) | 2016-10-31 | 2016-10-31 | Air conditioner circuit board cooling method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610932868.4A CN108019902B (en) | 2016-10-31 | 2016-10-31 | Air conditioner circuit board cooling method and device |
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| CN108019902A true CN108019902A (en) | 2018-05-11 |
| CN108019902B CN108019902B (en) | 2020-08-25 |
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| CN201610932868.4A Active CN108019902B (en) | 2016-10-31 | 2016-10-31 | Air conditioner circuit board cooling method and device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103052305A (en) * | 2013-01-08 | 2013-04-17 | 南车株洲电力机车研究所有限公司 | Method, device and system for cooling power electronic heating element |
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