CN106871380A - The protective device for preventing overheat and method of power device in air-conditioner and air-conditioner - Google Patents
The protective device for preventing overheat and method of power device in air-conditioner and air-conditioner Download PDFInfo
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- CN106871380A CN106871380A CN201710206521.6A CN201710206521A CN106871380A CN 106871380 A CN106871380 A CN 106871380A CN 201710206521 A CN201710206521 A CN 201710206521A CN 106871380 A CN106871380 A CN 106871380A
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- Prior art keywords
- conditioner
- air
- switch pipe
- power
- power switch
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
Abstract
The invention discloses the protective device for preventing overheat and method of power device in a kind of air-conditioner and air-conditioner, the power device includes rectifier bridge, power switch pipe, diode and intelligent power module, and described device includes：Temperature acquisition module, the surface temperature for obtaining power switch pipe；Control module, control module is connected with temperature acquisition module, and control module is used to be adjusted the target operating frequency of compressor in air-conditioner according to the surface temperature of power switch pipe, so that power device is in the range of safe working temperature.The device is controlled by the surface temperature according to power switch pipe come the target operating frequency to compressor, so that power switch pipe is in the range of safe working temperature, and then cause that power device is in the range of safe working temperature, efficiently solve the problems, such as that power device crosses cause thermal damage, it is ensured that the reliability service of air-conditioner.
Description
Technical field
The present invention relates to air-conditioner technical field, the anti-overtemperature protection dress of power device in more particularly to a kind of air-conditioner
Put, in a kind of air-conditioner and a kind of air-conditioner power device anti-method for excessive heating protection.
Background technology
Transducer air conditioning it is automatically controlled in, have IPM (Intelligent Power Module, SPM),
IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor), rectifier bridge, two poles of fast recovery
Pipe constant power device, these power devices can operationally produce substantial amounts of heat, it is easy to cause cause thermal damage.
Therefore, can be radiated using pure wind-cooling heat dissipating mode, will these power device centralized layouts in radiator (such as
Aluminium flake radiator) on, the contact area with air is increased by radiator, to improve radiating effect.But under worst hot case, this
Planting pure wind-cooling heat dissipating mode cannot still meet radiating requirements.
The content of the invention
The application is that the understanding of problems with and research are made based on inventor：
In IPM, IGBT, rectifier bridge, fast recovery diode constant power device, the caloric value of IPM and IGBT is larger, due to
Device is of different sizes in itself, and the contact area from radiator is also different, wherein, IPM is larger with the contact area of radiator, radiating
Effect is preferable, and IGBT is smaller with the contact area of radiator, in turn results in IGBT temperature rises highest (particularly plastic packaging IGBT), when
Transducer air conditioning control did not caused IGBT to cross cause thermal damage at that time, easily.So, if ensure that IGBT not by rationally control
Cause thermal damage can occur, then other power devices would not also occur cause thermal damage, therefore temperature control to IGBT turns into
The temperature controlled core of power device.
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, of the invention
One purpose is the protective device for preventing overheat for proposing power device in a kind of air-conditioner, by the surface according to power switch pipe
Temperature is controlled come the target operating frequency to compressor so that power switch pipe is in the range of safe working temperature, is entered
And cause that power device is in the range of safe working temperature, efficiently solves the problems, such as that power device crosses cause thermal damage, it is ensured that it is empty
Adjust the reliability service of device.
It is another object of the present invention to propose a kind of air-conditioner.
A further object of the present invention is the anti-method for excessive heating protection for proposing power device in a kind of air-conditioner.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of anti-overheat guarantor of power device in air-conditioner
Protection unit, the power device includes rectifier bridge, power switch pipe, diode and IPM, and described device includes：Temperature obtains mould
Block, the surface temperature for obtaining the power switch pipe；Control module, the control module and the temperature acquisition module phase
Even, the control module is for the object run according to the surface temperature of the power switch pipe to compressor in the air-conditioner
Frequency is adjusted, so that the power device is in the range of safe working temperature.
The protective device for preventing overheat of power device in air-conditioner according to embodiments of the present invention, by temperature acquisition module reality
When obtain the surface temperature of power switch pipe, control module is according to the surface temperature of power switch pipe to compressor in air-conditioner
Target operating frequency is adjusted, so that power device is in the range of safe working temperature.The device is opened by according to power
The surface temperature for closing pipe is controlled come the target operating frequency to compressor so that power switch pipe is in safe working temperature
In the range of, and then cause that power device is in the range of safe working temperature, efficiently solve power device and cross asking for cause thermal damage
Topic, it is ensured that the reliability service of air-conditioner.
According to one embodiment of present invention, the control module according to the surface temperature of the power switch pipe to described
When the target operating frequency of compressor is adjusted in air-conditioner, wherein, if the surface temperature of the power switch pipe is more than
First temperature threshold, the control module is then with the target operating frequency of the first rate reduction compressor；If the work(
The surface temperature of rate switching tube less than or equal to first temperature threshold and more than second temperature threshold value, then control by the control module
Current goal running frequency processed keeps constant；If the surface temperature of the power switch pipe is less than or equal to the second temperature threshold
Value, the control module is then recovered to normal required object run frequently the target operating frequency of the compressor with the second speed
Rate.
According to one embodiment of present invention, in above-mentioned air-conditioner power device protective device for preventing overheat, also include：
Refrigerant radiating module, the refrigerant radiating module is used to dissipate the power device by the refrigerant in the air-conditioner
Heat.
According to one embodiment of present invention, the refrigerant radiating module includes：Radiator, the waiting of the power device dissipates
Hot part is mounted on the radiator；Refrigerant pipe, the refrigerant pipe is embedded in the radiator, and the refrigerant pipe with it is described
Refrigerant pipeline in air-conditioner is connected, so that the refrigerant in the air-conditioner flows through the radiator and the power device is entered
Row radiating.
According to one embodiment of present invention, the refrigerant radiating module also includes：Housing, the radiator and described cold
Matchmaker's pipe is arranged in the housing.
According to one embodiment of present invention, the housing includes Part I and Part II, wherein, described first
Divide and be arranged in the cavity of outdoor fan in the air-conditioner, the Part II is arranged on the chamber of compressor in the air-conditioner
In vivo.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of air-conditioner, and it includes above-mentioned air-conditioning
The protective device for preventing overheat of power device in device.
The air-conditioner of the embodiment of the present invention, by the protective device for preventing overheat of above-mentioned power device, can effectively solve the problem that
Power device crosses the problem of cause thermal damage, so as to ensure the reliability service of air-conditioner.
To achieve the above object, another aspect of the invention embodiment proposes a kind of anti-overheat of power device in air-conditioner
Guard method, the power device includes rectifier bridge, power switch pipe, diode and intelligent power module, methods described bag
Include following steps：Obtain the surface temperature of the power switch pipe；Surface temperature according to the power switch pipe is to the sky
The target operating frequency of compressor in device is adjusted to be adjusted, so that the power device is in the range of safe working temperature.
The anti-method for excessive heating protection of power device, obtains power switch pipe in real time in air-conditioner according to embodiments of the present invention
Surface temperature, and the target operating frequency of compressor in air-conditioner is adjusted according to the surface temperature of power switch pipe,
So that power device is in the range of safe working temperature.The method is by the surface temperature according to power switch pipe come to compression
The target operating frequency of machine is controlled so that power switch pipe is in the range of safe working temperature, and then causes power device
Part is in the range of safe working temperature, efficiently solves the problems, such as that power device crosses cause thermal damage, it is ensured that the reliable fortune of air-conditioner
OK.
According to one embodiment of present invention, the surface temperature according to the power switch pipe is in the air-conditioner
The target operating frequency of compressor is adjusted, including：If the surface temperature of the power switch pipe is more than the first temperature threshold
Value, then with the target operating frequency of the first rate reduction compressor；If the surface temperature of the power switch pipe is less than
Equal to first temperature threshold and more than second temperature threshold value, then current goal running frequency is controlled to keep constant；If institute
The surface temperature of power switch pipe is stated less than or equal to the second temperature threshold value, then with the second speed by the target of the compressor
Running frequency is recovered to normal required target operating frequency.
Brief description of the drawings
Fig. 1 is the control circuit topology figure of air-conditioner according to an embodiment of the invention；
Fig. 2 is the block diagram of the protective device for preventing overheat of power device in air-conditioner according to embodiments of the present invention；
Fig. 3 is the schematic view of the mounting position of power device according to an embodiment of the invention；
Fig. 4 a are the top views of refrigerant radiating module according to an embodiment of the invention；
Fig. 4 b are the front views of refrigerant radiating module according to an embodiment of the invention；And
Fig. 5 is the flow chart of the anti-method for excessive heating protection of power device in air-conditioner according to embodiments of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
With reference to the accompanying drawings come the anti-overtemperature protection of power device in the air-conditioner for describing proposition according to embodiments of the present invention
Device, air-conditioner and in air-conditioner power device anti-method for excessive heating protection.
Fig. 1 is the control circuit topology figure of air-conditioner according to an embodiment of the invention.As shown in figure 1, air-conditioner
Controller may include that rectifier bridge 10, PFC (Power Factor Correction, PFC) circuit 20, compressor drives
Dynamic circuit 30, electrochemical capacitor EC and control unit 40.
Specifically, the input of rectifier bridge 10 is connected with AC power AC, output end and the pfc circuit 20 of rectifier bridge 10
Input is connected, and the input of compressor drive circuit 30 is connected with the output end of pfc circuit 20, compressor drive circuit 30
Output end is connected with compressor M, and electrochemical capacitor EC is connected in parallel between the output end of pfc circuit 20.Wherein, pfc circuit 20
Can be the Boost type PFC topology being made up of inductance L, diode D and power switch pipe Q (such as IGBT), compression
Drive circuit 30 may include IPM.Control unit 40 is connected with pfc circuit 20 and compressor drive circuit 30 respectively, and control is single
Unit 40 realizes power factor emendation function and compressor operating frequency by controlling pfc circuit 20 and compressor drive circuit 30
Control function.
Wherein, air-conditioner run during, rectifier bridge 10, power switch pipe Q, diode D and IPM caloric value compared with
Greatly, cause thermal damage can occur when temperature is higher, it is therefore desirable to which these power devices are radiated, and other devices such as inductance L,
The caloric values such as electrochemical capacitor EC are smaller, it is not necessary to cool down, so these devices are also referred to as passive device.
There is cause thermal damage to prevent power device, generally radiated using pure wind-cooling heat dissipating mode, wherein, power device
The caloric value of IPM and power switch pipe Q is larger in part, and IPM larger with the contact area of radiator, thus radiating effect compared with
It is good, and power switch pipe Q is smaller with the contact area of radiator, in turn results in power switch pipe Q temperature rise highests, so, as long as
Ensure that power switch pipe Q will not occur cause thermal damage by corresponding control strategy, then be to ensure that all power devices will not
Generation cause thermal damage.Therefore, in an embodiment of the present invention, all power are ensured by the temperature control to power switch pipe Q
Device will not occur cause thermal damage.
Fig. 2 is the block diagram of the protective device for preventing overheat of power device in air-conditioner according to embodiments of the present invention.
As shown in Fig. 2 the protective device for preventing overheat of power device may include in the air-conditioner：Temperature acquisition module 100 and control module
200。
Wherein, temperature acquisition module 100 is used to obtain the surface temperature of power switch pipe Q.Control module 200 is obtained with temperature
Modulus block 100 is connected, and control module 200 is used for the target to compressor M in air-conditioner according to the surface temperature of power switch pipe Q
Running frequency is adjusted, so that power device is in the range of safe working temperature.
Specifically, generally when being radiated to power device, the wherein one side held against heat sink of power device can be set
Put, therefore, in order to ensure the degree of accuracy of temperature detection, can be by being close to the power switch pipe Q back sides (that is, away from radiator
Temperature sensor simultaneously) or thermistor etc. carry out the surface temperature of real-time detection power switch pipe Q.Wherein, thermistor can
Think NTC (Negative Temperature Coefficient, negative temperature coefficient) thermistor.Alternatively, it is also possible to direct
Using the power switch pipe Q for being built-in with temperature sensor, the temperature sensor reality by integrated installation inside power switch pipe Q
When detection power switch pipe Q surface temperature.What the real-time acquisition temperature sensor of temperature acquisition module 100 or thermistor were detected
The surface temperature of power switch pipe Q, and feed back to control module 200.Control module 200 is according to the current power switching tube for obtaining
The surface temperature of Q is adjusted to the target operating frequency of compressor M, to ensure that power switch pipe Q is in safe working temperature
In the range of, and then ensure that power device is in the range of safe working temperature.For example, when the surface temperature of power switch pipe Q is high
When certain value, the heat of power switch pipe Q generations can be reduced by reducing the running frequency of compressor M, due to compressor M
Running frequency reduction, the caloric value of other power devices also can reduce accordingly, it is thus possible to all power devices are effectively ensured
Temperature be in the range of safe working temperature, effectively prevent power device occur cause thermal damage, it is ensured that system reliability service.
According to one embodiment of present invention, control module 200 according to the surface temperature of power switch pipe in air-conditioner
When the target operating frequency of compressor is adjusted, wherein, if the surface temperature of power switch pipe is more than the first temperature threshold,
Control module 200 is then with the target operating frequency of first rate reduction compressor；If the surface temperature of power switch pipe is less than
Equal to the first temperature threshold and more than second temperature threshold value, control module 200 then controls current goal running frequency to keep constant；
If the surface temperature of power switch pipe is less than or equal to second temperature threshold value, control module 200 is then with the second speed by compressor
Target operating frequency recover to target operating frequency needed for normal.
Wherein, the first temperature threshold is more than second temperature threshold value, and the first temperature threshold is no more than power switch pipe Q safety
The surface limit temperature of work；First rate is more than frequency reducing speed during the first temperature threshold for the surface temperature of power switch pipe Q
Rate, raising frequency speed or frequency reducing speed when the second speed is normally operation, general first rate is more than the second speed, to ensure
When the surface temperature of power switch pipe Q is more than the first temperature threshold, quick frequency reducing can be realized.First rate, the second speed,
One temperature threshold and second temperature threshold value can be demarcated according to actual conditions, for example, first rate can be 2Hz/s, second
Speed can be 1Hz/s, and the first temperature threshold can be 80 DEG C, and second temperature threshold value can be 75 DEG C.
Specifically, during control compressor M is run with required target operating frequency, if detecting power switch
The surface temperature of pipe Q is more than the first temperature threshold (such as 80 DEG C), and control module 200 then controls power switch pipe Q to be limited into temperature
Frequency state, now gradually reduces the target operating frequency of compressor M, to reduce power switch pipe Q with first rate (such as 2Hz/s)
The heat of generation, and then reduce the surface temperature of power switch pipe Q.
When power switch pipe Q is in temperature and limits frequency state, also continue to obtain the surface temperature of power switch pipe Q, and it is right
It is judged.When the surface temperature of power switch pipe Q is less than or equal to the first temperature threshold (80 DEG C) and more than second temperature threshold
During value (such as 75 DEG C), the control power switch pipe of control module 200 Q is in temperature frequency holding area, i.e., control compressor M's is current
Target operating frequency is constant, and continues to obtain the surface temperature of power switch pipe Q.
When the surface temperature of power switch pipe Q is less than or equal to second temperature threshold value (such as 75 DEG C), power switch pipe Q is illustrated
Have already decreased in the range of safe working temperature, accordingly, other power devices are also at respective safe working temperature scope
Interior, the now control of control module 200 power switch pipe Q exits temperature limit frequency state, recovers normal operating condition, and with the second speed
Rate (such as 1Hz/s) gradually recovers target operating frequency during target operating frequency to the normal operation of compressor M.So as to effectively prevent
Only there is cause thermal damage in power device, and can effectively prevent from causing system-down because of power device overheat triggering overtemperature protection
Problem so that system can not shut down operation, substantially increase Consumer's Experience.
In an embodiment of the present invention, except pure wind-cooling heat dissipating mode can be used, refrigerant radiating mode can also be used
Power device is radiated.
According to one embodiment of present invention, the protective device for preventing overheat of power device may also include in above-mentioned air-conditioner
Refrigerant radiating module, refrigerant radiating module is used to radiate power device by the refrigerant in air-conditioner.Further, such as
Shown in Fig. 3, refrigerant radiating module may include radiator 51 and refrigerant pipe 52, wherein, power device treats that radiator portion is mounted on
On radiator 51；In the insertion radiator 51 of refrigerant pipe 52, and refrigerant pipe 52 is connected with the refrigerant pipeline in air-conditioner, so that empty
Adjust the refrigerant in device to flow through radiator to radiate power device.
Specifically, as shown in figure 3, power device (such as rectifier bridge 10, power switch pipe Q, diode D and IPM) can be wrapped
Device body and device pin are included, wherein, on the electric-controlled plate 60 of air-conditioner, device body (treats radiating part for device pin soldering
Point) be fixed in the one side of radiator 51, the soldering of passive device (such as inductance L, electrochemical capacitor EC) is in the correct position of electric-controlled plate 60
On.Refrigerant pipe 52 is embedded on the another side of radiator 51 (relative with the one side close to device body), and ensures refrigerant pipe
52 are connected with the refrigerant pipeline in air-conditioner, so that the low temperature refrigerant in air-conditioner flows through radiator 51, take away power device
The heat of generation, to reach the purpose radiated to power device.
According to one embodiment of present invention, refrigerant radiating module may also include：Housing 53, radiator 51 and refrigerant pipe 52
It is arranged in housing 53.Further, as shown in figures 4 a and 4b, housing 53 may include Part I and Part II, wherein,
Part I is arranged in the cavity of outdoor fan in air-conditioner, and Part II is arranged in the cavity of compressor M in air-conditioner.
Specifically, as shown in figures 4 a and 4b, outdoor unit can be divided into by two cavitys by median septum 54, i.e., outdoor wind
Pusher side cavity and compressor M side chamber bodies.The Part I of housing 53 is arranged in the cavity of outdoor fan of air conditioner, housing 53
Part II is arranged in the cavity of compressor M, can radiate to enter power device by blower fan wind-cooling heat dissipating and refrigerant simultaneously
Row radiating.
In addition, it is necessary to explanation, in the air-conditioner radiated to power device using refrigerant radiating mode, equally
Also can there is power device different from the contact area of radiator 51, cause the problem that radiating effect is different, i.e. IPM and radiating
The contact area of device 51 is larger, good heat dissipation effect, and power switch pipe Q is smaller with the contact area of radiator 51, radiating effect
It is bad.Now, the target operating frequency of compressor M can be still controlled by the surface temperature according to power switch pipe Q,
So that power switch pipe Q is in the range of safe working temperature, and then cause that power device is in the range of safe working temperature.
Therefore, the application is not only suitable for, using the air-conditioner of pure wind-cooling heat dissipating mode, applying also for using the air-conditioning of refrigerant radiating mode
Device, while being also applied for the air-conditioner being combined using wind-cooling heat dissipating and refrigerant radiating, versatility is stronger.
In sum, in air-conditioner according to embodiments of the present invention power device protective device for preventing overheat, by temperature
Acquisition module obtains the surface temperature of power switch pipe in real time, and control module is according to the surface temperature of power switch pipe to air-conditioner
The target operating frequency of middle compressor is adjusted, so that power device is in the range of safe working temperature.The device passes through
Surface temperature according to power switch pipe is controlled come the target operating frequency to compressor so that power switch pipe is in peace
In full operating temperature range, and then cause that power device is in the range of safe working temperature, efficiently solve power device mistake
The problem of cause thermal damage, it is ensured that the reliability service of air-conditioner.
In addition, embodiments of the invention also proposed a kind of air-conditioner, it includes power device in above-mentioned air-conditioner
Protective device for preventing overheat.The protective device for preventing overheat can be integrally disposed in the control unit shown in Fig. 1, specifically no longer detailed here
State.
The air-conditioner of the embodiment of the present invention, by the protective device for preventing overheat of above-mentioned power device, can effectively solve the problem that
Power device crosses the problem of cause thermal damage, so as to ensure the reliability service of air-conditioner.
Fig. 5 is the flow chart of the anti-method for excessive heating protection of power device in air-conditioner according to embodiments of the present invention.At this
In inventive embodiment, power device may include rectifier bridge, power switch pipe, diode and intelligent power module.Such as Fig. 5
Shown, the anti-method for excessive heating protection of power device may include following steps in the air-conditioner：
S1, obtains the surface temperature of power switch pipe.
S2, the surface temperature according to power switch pipe is adjusted to the target operating frequency of compressor in air-conditioner, with
Power device is set to be in the range of safe working temperature.
According to one embodiment of present invention, target of the surface temperature according to power switch pipe to compressor in air-conditioner
Running frequency is adjusted, including：If the surface temperature of power switch pipe is more than the first temperature threshold, dropped with first rate
The target operating frequency of low compressor；If the surface temperature of power switch pipe is less than or equal to the first temperature threshold and more than second
Temperature threshold, then control current goal running frequency to keep constant；If the surface temperature of power switch pipe is less than or equal to second
Temperature threshold, then recovered to normal required target operating frequency the target operating frequency of compressor with the second speed.
It should be noted that do not disclosed in the anti-method for excessive heating protection of power device in the air-conditioner of the embodiment of the present invention
Details, refer to the details disclosed in the protective device for preventing overheat of power device in the air-conditioner of the embodiment of the present invention, specifically
Here repeat no more.
The anti-method for excessive heating protection of power device, obtains power switch pipe in real time in air-conditioner according to embodiments of the present invention
Surface temperature, and the target operating frequency of compressor in air-conditioner is adjusted according to the surface temperature of power switch pipe,
So that power device is in the range of safe working temperature.The method is by the surface temperature according to power switch pipe come to compression
The target operating frequency of machine is controlled so that power switch pipe is in the range of safe working temperature, and then causes power device
Part is in the range of safe working temperature, efficiently solves the problems, such as that power device crosses cause thermal damage, it is ensured that the reliable fortune of air-conditioner
OK.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " 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, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, 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 " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
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, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, 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 spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
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, changes, replacing and modification.
Claims (9)
1. in a kind of air-conditioner power device protective device for preventing overheat, it is characterised in that the power device include rectifier bridge,
Power switch pipe, diode and intelligent power module, described device include：
Temperature acquisition module, the surface temperature for obtaining the power switch pipe；
Control module, the control module is connected with the temperature acquisition module, and the control module is used for according to the power
The surface temperature of switching tube is adjusted to the target operating frequency of compressor in the air-conditioner, so that at the power device
In the range of safe working temperature.
2. in air-conditioner as claimed in claim 1 power device protective device for preventing overheat, it is characterised in that the control mould
When root tuber is adjusted according to the surface temperature of the power switch pipe to the target operating frequency of compressor in the air-conditioner, its
In,
If the surface temperature of the power switch pipe is more than the first temperature threshold, the control module is then with first rate reduction
The target operating frequency of the compressor；
If the surface temperature of the power switch pipe is less than or equal to first temperature threshold and more than second temperature threshold value, institute
Stating control module then controls current goal running frequency to keep constant；
If the surface temperature of the power switch pipe is less than or equal to the second temperature threshold value, the control module is then with second
Speed recovers to normal required target operating frequency the target operating frequency of the compressor.
3. in air-conditioner as claimed in claim 1 or 2 power device protective device for preventing overheat, it is characterised in that also include：
Refrigerant radiating module, the refrigerant radiating module is used to carry out the power device by the refrigerant in the air-conditioner
Radiating.
4. in air-conditioner as claimed in claim 3 power device protective device for preventing overheat, it is characterised in that the refrigerant dissipate
Thermal modules include：
Radiator, the power device treats that radiator portion is mounted on the radiator；
Refrigerant pipe, the refrigerant pipe is embedded in the radiator, and the refrigerant pipeline phase in the refrigerant pipe and the air-conditioner
Connection, so that the refrigerant in the air-conditioner flows through the radiator and radiated to the power device.
5. in air-conditioner as claimed in claim 4 power device protective device for preventing overheat, it is characterised in that the refrigerant dissipate
Thermal modules also include：
Housing, the radiator and the refrigerant pipe are arranged in the housing.
6. in air-conditioner as claimed in claim 5 power device protective device for preventing overheat, it is characterised in that the housing bag
Part I and Part II are included, wherein, the Part I is arranged in the cavity of outdoor fan in the air-conditioner, described
Part II is arranged in the cavity of compressor in the air-conditioner.
7. a kind of air-conditioner, it is characterised in that including power device in the air-conditioner as any one of claim 1-6
Protective device for preventing overheat.
8. in a kind of air-conditioner power device anti-method for excessive heating protection, it is characterised in that the power device include rectifier bridge,
Power switch pipe, diode and intelligent power module, the described method comprises the following steps：
Obtain the surface temperature of the power switch pipe；
Surface temperature according to the power switch pipe is adjusted to the target operating frequency of compressor in the air-conditioner, with
The power device is set to be in the range of safe working temperature.
9. in air-conditioner as claimed in claim 8 power device anti-method for excessive heating protection, it is characterised in that it is described according to institute
The surface temperature for stating power switch pipe is adjusted to the target operating frequency of compressor in the air-conditioner, including：
If the surface temperature of the power switch pipe is more than the first temperature threshold, with the first rate reduction compressor
Target operating frequency；
If the surface temperature of the power switch pipe is less than or equal to first temperature threshold and more than second temperature threshold value,
Control current goal running frequency keeps constant；
If the surface temperature of the power switch pipe is less than or equal to the second temperature threshold value, with the second speed by the pressure
The target operating frequency of contracting machine recovers to normal required target operating frequency.
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| CN201710206521.6A CN106871380A (en) | 2017-03-31 | 2017-03-31 | The protective device for preventing overheat and method of power device in air-conditioner and air-conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710206521.6A CN106871380A (en) | 2017-03-31 | 2017-03-31 | The protective device for preventing overheat and method of power device in air-conditioner and air-conditioner |
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| CN106871380A true CN106871380A (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710206521.6A Pending CN106871380A (en) | 2017-03-31 | 2017-03-31 | The protective device for preventing overheat and method of power device in air-conditioner and air-conditioner |
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| CN107154771A (en) * | 2017-07-07 | 2017-09-12 | 易事特集团股份有限公司 | Fan frequency conversion governing system for converters |
| CN107178944A (en) * | 2017-07-13 | 2017-09-19 | 上海三菱电机·上菱空调机电器有限公司 | A kind of method for preventing that air conditioner discharge superheat is too small and air conditioner control system |
| CN108253590A (en) * | 2018-01-09 | 2018-07-06 | 广东美的制冷设备有限公司 | The resonance point judgment method and storage medium of transducer air conditioning and its compressor |
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| CN108592167A (en) * | 2018-04-04 | 2018-09-28 | 深圳市深蓝新能源电气有限公司 | Frequency conversion heat pump driver temperature-control circuit |
| CN110601549A (en) * | 2018-06-13 | 2019-12-20 | 重庆美的制冷设备有限公司 | High-integration intelligent power module and electrical equipment |
| CN110601550A (en) * | 2018-06-13 | 2019-12-20 | 重庆美的制冷设备有限公司 | High-integration intelligent power module and air conditioner |
| CN109140676A (en) * | 2018-08-22 | 2019-01-04 | 奥克斯空调股份有限公司 | A kind of air conditioner and its control method |
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