CN102480213A - Heat radiating device, frequency converter comprising the same and frequency-variable air conditioner - Google Patents
Heat radiating device, frequency converter comprising the same and frequency-variable air conditioner Download PDFInfo
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- CN102480213A CN102480213A CN2010105554693A CN201010555469A CN102480213A CN 102480213 A CN102480213 A CN 102480213A CN 2010105554693 A CN2010105554693 A CN 2010105554693A CN 201010555469 A CN201010555469 A CN 201010555469A CN 102480213 A CN102480213 A CN 102480213A
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Abstract
The invention provides a heat radiating device, a frequency converter and a frequency-variable air conditioner. The heat radiating device of the invention comprises a heat exchanger (1) and the heat exchanger (1) is provided with an inlet end (11) and an outlet end (12) thereon. A heat radiating pipe is arranged between the inlet end (11) and the outlet end (12) in the heat exchanger (1). The heat radiating device of the invention greatly reduces the volume of a heat radiating plate so as to effectively improve heat radiating efficiency, reduce cost of heat radiation, and improve safety and stability of a frequency converter module. The frequency converter of the invention comprises a circuit control system, wherein the circuit control system is controlled by a mainboard of the frequency converter and comprises an electromagnetic valve (4) connected to the inlet end (11) of the heat radiating device. By using the frequency-variable air conditioner of the invention, the frequency converter module always runs in a rational temperature range, thereby achieving the purpose of protecting stable and reliable operation of the frequency converter.
Description
Technical field
The present invention relates to field of air conditioning, specifically, relate to a kind of heat abstractor, comprise its frequency converter and convertible frequency air-conditioner.
Background technology
The frequency converter module plays the effect of a power transfer and amplification in whole frequency converter, wherein because the resistance of switching loss and module itself can produce heat in its course of work; And the power of the assembling unit of frequency converter correspondence is big more; Caloric value is big more, sheds if these heats are untimely, can influence module performance even burn out module; Therefore, frequency converter module heat dissipating problem is a frequency converter key for design point always.
Frequency converter module radiating mode commonly used mainly contains fan forced convection heat radiation, fin heat loss through radiation, radiating tube heat radiation etc. at present.And in the air-conditioning product; Using maximum is the mode of fin heat loss through radiation; This radiating mode is through being adjacent to frequency converter module and fin together the heat transferred fin with the frequency converter module; Good heat-conductive characteristic through fin distributes heat, enlarges the area of dissipation of frequency converter module with this, improves the radiating efficiency of frequency converter module.But because this radiating mode depends primarily on the heat conduction property of fin itself and the area of dissipation of fin, in frequency converter, the area of fin is restricted, and this has also seriously restricted the effect of fin heat radiation.
On convertible frequency air-conditioner, in order to improve the frequency converter heat dispersion, a fin that often need volume is relatively large is installed in the unit, has taken the design space of unit, has also caused the inconvenience of installation and maintenance.In use,, exceeded fin heat discharge speed, be difficult to the heat radiation of frequency converter module is effectively adjusted, the temperature of frequency converter module is remained within the reasonable range if frequency converter module caloric value is excessive.If thermal accumlation is too much, be easy to burn out the frequency converter module, in order to protect the frequency converter module, often need shut down heat radiation, caused a lot of inconvenience for the use of air-conditioning.
Summary of the invention
The present invention aims to provide a kind of heat abstractor; Make frequency converter module in the convertible frequency air-conditioner need not big fin and also can have better heat radiating effect; Improve radiating efficiency effectively, reduced the heat radiation cost, improved the safety in utilization and stability of frequency converter module.
To achieve these goals, according to an aspect of the present invention, a kind of heat abstractor is provided, has comprised heat exchanger, heat exchanger is provided with the entrance point and the port of export, and in heat exchanger, has the hot channel that is arranged between the entrance point and the port of export.
Further, heat abstractor also comprises metallic laminas, and the heat-transfer surface that metallic laminas is close to heat exchanger fixedly installs.
According to a further aspect in the invention, a kind of frequency converter is provided, has comprised frequency converter mainboard and frequency converter module, also comprised above-mentioned any one heat abstractor, the surface that heat abstractor is close to the frequency converter module is provided with.
Further, between heat abstractor and frequency converter module, be coated with the heat conduction colloid.
Further, frequency converter also comprises a circuit control system, and circuit control system comprises an electromagnetically operated valve that is connected the heat exchanger entrance point by the control of frequency converter mainboard.
Further, circuit control system also comprises a temperature sensor that is connected on the frequency converter module, and the temperature information that circuit control system transmits according to temperature sensor is controlled the keying of electromagnetically operated valve.
According to a further aspect in the invention, a kind of convertible frequency air-conditioner is provided, has had refrigerating circuit, also comprised any one above-mentioned heat abstractor, the heat exchanger of heat abstractor is arranged in the refrigerating circuit.
Further; Convertible frequency air-conditioner comprises the compressional zone; The two ends of compressional zone are connected on two ports of cross valve, on two other port of cross valve, connect condensing zone and evaporating area respectively, between condensing zone and evaporating area, are provided with the breathing space; The entrance point of the heat exchanger of heat abstractor is connected on the connecting line between condensing zone and the breathing space, and the port of export of heat exchanger is connected on the pipeline of suction end of compressional zone.
Further, the entrance point of heat exchanger is connected on the connecting line between condensing zone and the breathing space through electromagnetically operated valve.
In accordance with a further aspect of the present invention; A kind of convertible frequency air-conditioner is provided, has comprised the compressional zone, the two ends of compressional zone are connected on two ports of cross valve; On two other port of cross valve, connect condensing zone and evaporating area respectively; Between condensing zone and evaporating area, be provided with the breathing space, the entrance point of the heat exchanger of heat abstractor is connected on the connecting line between condensing zone and the breathing space, and the port of export of heat exchanger is connected on the pipeline of suction end of compressional zone.
According to heat abstractor of the present invention; Comprise and have the heat exchanger that is arranged on the hot channel between the entrance point and the port of export; Make frequency converter module in the convertible frequency air-conditioner need not big fin and also can have better heat radiating effect; Improve radiating efficiency effectively, reduced the heat radiation cost, improved the safety in utilization of frequency converter module.According to frequency converter of the present invention, can control the interface keying of heat abstractor through circuit control system, increased the use flexibility of heat abstractor, improved the adaptedness of heat abstractor to environment.According to convertible frequency air-conditioner of the present invention, the characteristics of utilizing the refrigerant flow regime to change make few operative liquid refrigerant flow through heat exchanger, have effectively improved the radiating efficiency of heat abstractor, have strengthened the job stability of convertible frequency air-conditioner.
Description of drawings
Figure of description is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
The perspective view that Fig. 1 shows heat abstractor according to an embodiment of the invention and comprises its frequency converter;
Fig. 2 shows the working state structure sketch map of convertible frequency air-conditioner according to an embodiment of the invention; And
Fig. 3 shows converter circuit control system solenoid control flow chart according to an embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
As shown in Figure 1, according to heat abstractor of the present invention, comprise heat exchanger 1, heat exchanger 1 is provided with the entrance point 11 and the port of export 12, and in heat exchanger 1, has the hot channel that is arranged between the entrance point 11 and the port of export 12.Hot channel between two ports can beeline channel, also can be curved channel; Preferably, this heat dissipation channel spreads all in the entire heat dissipation device, like this; If feed extraneous heat radiation medium, the radiating effect of this heat abstractor is fully played, effectively improved radiating efficiency.The entrance point 11 and the port of export 12 can be arranged on the side of heat exchanger 1; On the entrance point 11 and the port of export 12, all has dismountable connector; This connector is used for being connected with the extraneous pipe joint that is connected with the heat radiation medium; Because connector is detachable, therefore, can select different connectors according to different application scenarios.Because this heat abstractor mainly is through the heat radiation medium of flowing through wherein heat to be taken away, therefore, it is very little that the volume of this heat abstractor can become, and helps more heat is distributed.
Because the heat-transfer surface shape majority of heat exchanger 1 is irregular, has better heat exchange effect in order to make heat abstractor, heat abstractor also comprises the metallic laminas 2 that the heat-transfer surface of being close to heat exchanger 1 fixedly installs.Metallic laminas 2 can be welded on the heat exchanger 1, also can be fixedly installed on the heat exchanger 1 through alternate manner, and is for example bonding etc., to guarantee contactless thermal resistance between metallic laminas 2 and the heat exchanger 1.Because metallic laminas 2 has smooth smooth surface, and be close to heat exchanger 1 setting, in the time of on heat abstractor being installed in the module that needs heat radiation, can carry out heat exchange more quickly and effectively, unnecessary heat is distributed, protect thereby form effectively.
According to the embodiment of frequency converter of the present invention, comprise frequency converter mainboard 3 and frequency converter module 31, also comprise any one above-mentioned heat abstractor, the surface that this heat abstractor is close to frequency converter module 31 is provided with.In order to increase the contact area of heat abstractor and frequency converter module, improve the radiating effect of heat abstractor, between heat abstractor and frequency converter module 31, be coated with the heat conduction colloid.
In the present embodiment, frequency converter also comprises a circuit control system, and circuit control system comprises an electromagnetically operated valve 4 that is connected heat exchanger entrance point 11 by the control of frequency converter mainboard.Circuit control system also comprises a temperature sensor that is connected on the frequency converter module 31, and circuit control system is according to the keying of the temperature control electromagnetically operated valve 4 of temperature sensor.Under the control of humidity control system; Can select to use the heat radiation medium to dispel the heat according to actual needs; Perhaps only use heat abstractor itself to dispel the heat, improved the on-the-spot applicability of heat abstractor on the one hand, promptly can select appropriate mode according to on-the-spot needs; On the other hand, improve the radiating efficiency of heat abstractor, practiced thrift the energy.
Embodiment according to convertible frequency air-conditioner of the present invention has refrigerating circuit, also comprises above-mentioned any one heat abstractor, and the heat exchanger 1 of heat abstractor is arranged in the refrigerating circuit.Preferably; Convertible frequency air-conditioner comprises compressional zone 5; The two ends of compressional zone 5 are connected on two ports of cross valve 9, on two other port of cross valve 9, connect condensing zone 6 and evaporating area 8 respectively, between condensing zone 6 and evaporating area 8, are provided with breathing space 7; The entrance point 11 of the heat exchanger 1 of heat abstractor is connected on the connecting line between condensing zone 6 and the breathing space 7, and the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5.More preferably, the entrance point 11 of heat exchanger 1 is connected on the connecting line between condensing zone 6 and the breathing space 7 through electromagnetically operated valve 4.
As shown in Figure 2; Another embodiment according to convertible frequency air-conditioner of the present invention; Comprise compressional zone 5, the two ends of compressional zone 5 are connected on two ports of cross valve 9, on two other port of cross valve 9, connect condensing zone 6 and evaporating area 8 respectively; Between condensing zone 6 and evaporating area 8, be provided with breathing space 7; Convertible frequency air-conditioner also comprises above-mentioned any one frequency converter, and the entrance point 11 of the heat exchanger 1 of the heat abstractor in the frequency converter is connected on the connecting line between condensing zone 6 and the said breathing space 7 through electromagnetically operated valve 4, and the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5.
Because air-conditioning system is to utilize the state variation of refrigerant medium to carry out heat transferred; There is the liquid condition stage of one section low temperature in refrigerant in cyclic process; Therefore can utilize the refrigerant of this liquid condition to carry out heat exchange through the heat exchanger 1 and the frequency converter module 31 of heat abstractor of the present invention; Reach the purpose of rapidly stable reduction frequency converter module 31 temperature; Can guarantee in the long-time running that module operates in the proper temperature range always, protect frequency converter module 31, strengthen the operation stability and the reliability of frequency converter greatly with this.
In the operation process of convertible frequency air-conditioner, if freeze, then the liquid freon of the freon of gaseous state boil down to HTHP in compressional zone 5 is delivered to the liquid freon that becomes normal temperature high voltage after condensing zone 6 dispels the heat then; Get into breathing space 7 then, after the liquid freon of normal temperature high voltage gets into evaporating area 8 through breathing space 7, because the space increases suddenly; Pressure diminishes, and liquid freon will gas China, becomes the freon of gaseous state low temperature; Thereby the absorption great amount of heat, evaporating area will turn cold, thereby absorbs a large amount of heats; Indoor temperature is reduced, and the freon of gaseous state is got back to compressional zone 5 continuation compressions then, continues circulation.
If heat, then whole process is just in time opposite.
Therefore, in order to realize the efficiently radiates heat of heat abstractor, the entrance point 11 of heat exchanger 1 is connected on the connecting line between condensing zone 6 and the breathing space 7, and the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5.Under refrigeration mode, refrigerant is flowed through from compressor after the condenser, and the refrigerant state is the liquid of cryogenic high pressure; If this moment, the module temperature reached electromagnetically operated valve unlatching condition; The refrigerant of cryogenic high pressure carries out heat exchange through electromagnetically operated valve 4 radiator of flowing through with frequency converter module 31, reduces the module temperature.
Under heating mode; Refrigerant is flowed through from compressional zone 5 after the evaporating area 8, and again through breathing space 7, this moment, the refrigerant state was the vapour-liquid two-phase mixture of low-temp low-pressure; When reaching electromagnetically operated valve, the module temperature opens condition; The refrigerant of low-temp low-pressure carries out heat exchange through electromagnetically operated valve 4 radiator of flowing through with frequency converter module 31, reduces the module temperature.Because the port of export 12 of heat exchanger 1 is connected on the pipeline of suction end of compressional zone 5; The air here is in negative pressure state all the time; Can guarantee to be in low temperature refrigerant on the connecting line between condensing zone 6 and the breathing space 7 heat abstractor of flowing through all the time, guarantee the radiating effect of heat abstractor.
Embodiment according to convertible frequency air-conditioner of the present invention; It mainly is the heat exchanger with inner passage 1 that utilizes a fritter high efficient heat exchanging; Characteristics in conjunction with refrigerant flow regime in the air-conditioning system changes make few operative liquid refrigerant flow through heat exchanger 1, carry out exchange heat through heat exchanger 1 and frequency converter module 31; The frequency converter module is close on the metallic laminas 2 that welds together with heat exchanger 1, and heat exchanger 1 two ends link to each other with the air conditioner coolant system through pipeline.Simultaneously in order to reduce as far as possible because the refrigerant in the air-conditioning system need the bypass sub-fraction carry out heat exchange through heat exchanger 1 and frequency converter module 31 and cause to complete machine Effect on Performance degree; On the pipeline of heat exchanger 1 entrance point 11, also be provided with a small electrical magnet valve 4; This valve links to each other with frequency converter mainboard 3, receives mainboard control to open and close.As shown in Figure 3; The module surface is provided with a temperature sensor; Frequency converter mainboard 3 can detect frequency converter module 31 surface temperatures and export the control signal to electromagnetically operated valve 4 according to the internal control program through this temperature sensor; When if detected temperatures surpasses a higher temperature restriction of passing through to test to confirm; Electromagnetically operated valve 4 is opened, and the high pressure low temperature refrigerant carries out exchange heat from system flow through heat exchanger 1 and frequency converter module 31, reduces the module temperature and the module temperature is stabilized in the suitable temperature range gradually.If when the detected temperatures value was lower than a lower temperature limit value of confirming through test, the representation module self-temperature was lower, need not extra heat dissipation, electromagnetically operated valve 4 cuts out, the no refrigerant heat exchanger of flowing through.If when the detected temperatures value changed between lower temperature restriction and higher temperature restriction, 4 of electromagnetically operated valves kept original running status.Guarantee that so module always operates in the rational temperature scope, reaches the purpose of the reliable and stable operation of protection frequency converter.
The switch of electromagnetically operated valve is specifically by following logic operation:
1, when the detection module temperature was spent greater than 80, electromagnetically operated valve was opened;
2, spend greater than 60 when the detection module temperature, when spending smaller or equal to 80, electromagnetically operated valve keeps state before;
3, when the detection module temperature is spent smaller or equal to 60, closed electromagnetic valve.
So, just can guarantee that the frequency converter module works all the time in the temperature range of a safety, improve the fail safe of frequency converter module, thereby improved the radiating efficiency and the job stability of convertible frequency air-conditioner.
From above description; Can find out that the above embodiments of the present invention have realized following technique effect: make frequency converter module in the convertible frequency air-conditioner need not big fin and also can have better heat radiating effect, and can select suitable operating state according to the working temperature of frequency converter module; Improved radiating efficiency effectively; Reduced adverse effect, reduced the heat radiation cost, improved the safety in utilization and the stability of frequency converter module for the complete machine performance.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. heat abstractor; Comprise heat exchanger (1); It is characterized in that said heat exchanger (1) is provided with the entrance point (11) and the port of export (12), and in said heat exchanger (1), have the hot channel that is arranged between the said entrance point (11) and the said port of export (12).
2. heat abstractor according to claim 1 is characterized in that, also comprises metallic laminas (2), and the heat-transfer surface that said metallic laminas (2) is close to said heat exchanger (1) fixedly installs.
3. a frequency converter comprises frequency converter mainboard (3) and frequency converter module (31), it is characterized in that, also comprises claim 1 or 2 described heat abstractors, and the surface that said heat abstractor is close to said frequency converter module (31) is provided with.
4. frequency converter according to claim 3 is characterized in that, between said heat abstractor and said frequency converter module (31), is coated with the heat conduction colloid.
5. frequency converter according to claim 3 is characterized in that, also comprises a circuit control system, and said circuit control system comprises an electromagnetically operated valve (4) that is connected said heat exchanger entrance point (11) by the control of frequency converter mainboard.
6. frequency converter according to claim 5; It is characterized in that; Said circuit control system also comprises a temperature sensor that is connected on the said frequency converter module (31), and said circuit control system is controlled the keying of said electromagnetically operated valve (4) according to the temperature information of said temperature sensor transmission.
7. a convertible frequency air-conditioner has refrigerating circuit, it is characterized in that, also comprises claim 1 or 2 described heat abstractors, and the heat exchanger of said heat abstractor (1) is arranged in the said refrigerating circuit.
8. convertible frequency air-conditioner according to claim 7; It is characterized in that; Comprise compressional zone (5); The two ends of said compressional zone (5) are connected on two ports of cross valve (9), on two other port of said cross valve (9), connect condensing zone (6) and evaporating area (8) respectively, between said condensing zone (6) and said evaporating area (8), are provided with breathing space (7); The entrance point (11) of the heat exchanger of said heat abstractor (1) is connected on the connecting line between said condensing zone (6) and said breathing space (7), and the port of export (12) of said heat exchanger (1) is connected on the pipeline of suction end of said compressional zone (5).
9. convertible frequency air-conditioner according to claim 8 is characterized in that, the entrance point (11) of said heat exchanger (1) is connected on the said connecting line between said condensing zone (6) and said breathing space (7) through electromagnetically operated valve (4).
10. convertible frequency air-conditioner; Comprise compressional zone (5); The two ends of said compressional zone (5) are connected on two ports of cross valve (9); On two other port of said cross valve (9), connect condensing zone (6) and evaporating area (8) respectively; Between said condensing zone (6) and said evaporating area (8), be provided with breathing space (7), it is characterized in that, also comprise each described frequency converter among the claim 3-6; The entrance point (11) of the heat exchanger of the heat abstractor in the said frequency converter (1) is connected on the connecting line between said condensing zone (6) and said breathing space (7) through said electromagnetically operated valve (4), and the port of export (12) of said heat exchanger (1) is connected on the pipeline of suction end of said compressional zone (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555469.3A CN102480213B (en) | 2010-11-22 | 2010-11-22 | Heat radiating device, frequency converter comprising same and frequency-variable air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555469.3A CN102480213B (en) | 2010-11-22 | 2010-11-22 | Heat radiating device, frequency converter comprising same and frequency-variable air conditioner |
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| CN102480213A true CN102480213A (en) | 2012-05-30 |
| CN102480213B CN102480213B (en) | 2014-04-09 |
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| CN201010555469.3A Active CN102480213B (en) | 2010-11-22 | 2010-11-22 | Heat radiating device, frequency converter comprising same and frequency-variable air conditioner |
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| CN103486682A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Photovoltaic air conditioning system |
| CN104154692A (en) * | 2014-08-06 | 2014-11-19 | 西安交通大学 | Novel air supply and enthalpy increasing system and control method thereof |
| CN104566840A (en) * | 2013-10-16 | 2015-04-29 | 海尔集团公司 | Coolant radiating device, air conditioner with coolant radiating device and temperature control method of coolant radiating device |
| CN104613556A (en) * | 2013-11-04 | 2015-05-13 | 珠海格力电器股份有限公司 | Cooling device of electrical apparatus element and air conditioner having same |
| CN104713204A (en) * | 2013-12-11 | 2015-06-17 | 珠海格力电器股份有限公司 | Air conditioning unit and control method |
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| CN103486682A (en) * | 2013-09-25 | 2014-01-01 | 珠海格力电器股份有限公司 | Photovoltaic air conditioning system |
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| CN106134062A (en) * | 2014-03-10 | 2016-11-16 | 三菱重工汽车空调系统株式会社 | Motor compressor |
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| CN104949296A (en) * | 2014-03-27 | 2015-09-30 | 广东美的暖通设备有限公司 | Cooling device and air-conditioner with cooling device |
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| CN104931527A (en) * | 2015-06-18 | 2015-09-23 | 广东美的暖通设备有限公司 | Detecting tool |
| CN105627640A (en) * | 2016-03-14 | 2016-06-01 | 湖南华强电气股份有限公司 | Cooling method and device for heating element of vehicle-mounted air conditioner |
| CN105953318A (en) * | 2016-06-17 | 2016-09-21 | 珠海格力电器股份有限公司 | Heat radiation device of air conditioner controller and air conditioning equipment |
| CN107548262A (en) * | 2016-06-29 | 2018-01-05 | 青岛海尔智能技术研发有限公司 | The heat abstractor and transducer air conditioning of air conditioning frequency converter |
| CN107355914A (en) * | 2017-06-15 | 2017-11-17 | 青岛海尔空调电子有限公司 | A kind of air-conditioning heat dissipation structural parameter determining method and air-conditioning heat dissipation structure |
| CN107355914B (en) * | 2017-06-15 | 2020-07-07 | 青岛海尔空调电子有限公司 | Air conditioner heat dissipation structure parameter determination method and air conditioner heat dissipation structure |
| CN109392289A (en) * | 2018-09-04 | 2019-02-26 | 珠海格力电器股份有限公司 | A kind of frequency conversion Gas-supplying enthalpy-increasing system, frequency converter cooling means and equipment |
| CN112902487A (en) * | 2019-12-03 | 2021-06-04 | 杭州三花微通道换热器有限公司 | Refrigeration system |
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