CN204597806U - High reliability transport refrigeration apparatus - Google Patents
High reliability transport refrigeration apparatus Download PDFInfo
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- CN204597806U CN204597806U CN201520007231.5U CN201520007231U CN204597806U CN 204597806 U CN204597806 U CN 204597806U CN 201520007231 U CN201520007231 U CN 201520007231U CN 204597806 U CN204597806 U CN 204597806U
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Abstract
The utility model provides a kind of high reliability transport refrigeration apparatus, comprise compressor, condenser, motor, drying liquid storage device and rapid steamer, the Switching Power Supply of connecting with motor, control switch and driver, Switching Power Supply comprises the resonate converter with interphase reactor transformer.The high reliability transportation refrigerating machine of the resonate converter of interphase reactor transformer that what the utility model provided have, its loss is low, and power density is high, can improve working life and the reliability of transportation refrigerating machine.
Description
Technical field
The utility model belongs to refrigeration machine field, particularly a kind of high reliability transport refrigeration apparatus with the resonate converter of interphase reactor transformer.
Background technology
In recent years, more domestic cars, commercial vehicle manufacturer develop small-sized business refrigerator car one after another, and this car is converted by car, minibus or commercial vehicle, more attractive in appearance than van, small volume, and be more suitable for city dispensing, future market prospect is considerable.
It is the transport refrigeration unit of its exploitation specially that this type of small-sized business refrigerator car has, and the DC frequency-changing transportation refrigerating machine system of current advanced transport refrigeration unit does not rely on the running of engine and works, without the need to fuel consumption; And automobile in driving process by generator or powered battery for unit; The external civil power of Switching Power Supply is utilized to use, with energy savings during parking.
The course of work of the Switching Power Supply of the transport refrigeration unit used in current small-sized business refrigerator car is by " copped wave ", namely the direct voltage of input is cut into amplitude and equals that the pulse voltage of input voltage amplitude realizes.The duty ratio of pulse is regulated by the controller of Switching Power Supply; Once input voltage is cut into ac square wave, its amplitude just can be raised by transformer or reduce, just can be increased the magnitude of voltage of output by the secondary winding number increasing transformer, finally these AC wave shape just obtain VD after rectifying and wave-filtering.
But use the transportation refrigerating machine of above-mentioned Switching Power Supply to there is switching loss, the surge voltage that can produce when cut-off switch element and the transportation refrigerating machine poor work stability caused because of voltage instability, its loss is high, power density is low, working life and the low problem of reliability.
Utility model content
Technical problem to be solved in the utility model, for the defect in aforementioned background art and deficiency, a kind of DC frequency-changing high reliability transport refrigeration apparatus with the resonate converter of interphase reactor transformer is proposed, its loss is low, power density is high, can improve working life and the reliability of transportation refrigerating machine.
The utility model is achieved through the following technical solutions above-mentioned purpose:
For the technical disadvantages that the structure of existing refrigerating machine of refrigerated truck exists, redesign a kind of high reliability transport refrigeration apparatus, comprise compressor, condenser, motor, drying liquid storage device and rapid steamer, described motor is in series with Switching Power Supply, control switch and driver, described Switching Power Supply comprises the resonate converter with interphase reactor transformer, and described control switch is IGBT or MOSFET.
Further, described resonate converter comprises input voltage U
in, former limit and secondary all have tapped transformer T, switch element S1, S2, S3, S4, diode D1, D2, D3, D4, inductance L and controller, each switching tube has antiparallel parasitic diode and parasitic capacitance.
Further, its topological structure is: comprise input voltage U
in, former limit and secondary all have tapped transformer T, switch element S1, S2, S3, S4, diode D1, D2, D3, D4, inductance L.Above-mentioned switch element can be IGBT, and diode is fast recovery diode.
Further, described input voltage U
inanode connect the collector electrode of described switch element S1, S3, input voltage U
innegative terminal connect the negative electrode of diode D1, D2, the emitter of switch element S2, S4; The different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the tie point of the Same Name of Ends of former limit winding centre tap the first half winding N1 and the different name end of former limit winding centre tap the latter half winding N2 and input voltage U
inanode be connected; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of vice-side winding centre tap the first half winding, the different name end of vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L, the different name end of vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L and load are connected.
Further, described controller control switch S1 and S2 alternate conduction, S3 and S4 alternate conduction, by the resonance circuit that the stray capacitance of inductance L and each switch element is formed, each switch element of conducting when the terminal voltage of each switch element is 0, thus it is open-minded to realize no-voltage.
Further, described each diode is fast recovery diode or Schottky diode.
Further, described driver is DC frequency-changing driver.
Further, the arbor of described compressor is connected with the rotating shaft on driver by gearbox.
Compared with prior art, high reliability transportation refrigerating machine described in the utility model has following advantages:
The switching frequency that the DC frequency-changing transportation refrigerating machine with the resonate converter of interphase reactor transformer utilizes the form of interphase reactor transformer can realize by control circuit control switch element, makes output voltage become predetermined value.
And because electric current flows through negative direction during each switching elements ON, therefore do not produce switching losses.
And because carried out resonance action, surge voltage during cut-off switch element also can not be produced.
While realizing energy feedback, utilize the parasitic capacitance of inductance and switch element to form Sofe Switch form, do not have unnecessary power capacity, its loss is low, and power density is high, can improve working life and the reliability of transportation refrigerating machine.
Accompanying drawing explanation
Fig. 1: transportation refrigerating machine structural representation of the present utility model;
Fig. 2: the structural representation with the resonate converter of interphase reactor transformer of the present utility model;
Fig. 3: the control impuls sequential chart of switch element S1, S2, S3, S4.
Wherein, 1-compressor, 11-arbor, 2-condenser, 3-motor, 4-drying liquid storage device, 5-driver, 51-rotating shaft, 6-conduit, 7-gearbox, 8-speed changer, U
in-input voltage, T-tapped transformer, S1, S2, S3, S4-switch element, D1, D2, D3, D4-diode, L-inductance, N1-former limit winding centre tap the first half winding, N2-former limit winding centre tap the latter half winding, N3-vice-side winding centre tap the first half winding, N4-vice-side winding centre tap the latter half winding.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.
As shown in Figure 1, transportation refrigerating machine of the present utility model comprises compressor 1, condenser 2, motor 3, drying liquid storage device 4 and rapid steamer not shown in the diagram, described motor 3 is in series with Switching Power Supply, control switch and driver 5, described Switching Power Supply comprises the resonate converter with interphase reactor transformer, and described condenser 2 is communicated with drying liquid storage device 4 with compressor 1 by conduit 6.Described compressor 1 is connected by speed changer 8 with motor 3 (this motor can adopt direct current variable frequency motor); When refrigerator car travels, described motor 3 drives work (automobile power source refers to mobile generator or storage battery) by DC frequency-changing actuator electrical by automobile power source; When refrigerator car switch-off, control switch cuts off automobile power source automatically, and external civil power is by Switching Power Supply for motor 3 provides the energy, and the arbor 11 of compressor 1 is connected with the rotating shaft 51 on driver 5 by gearbox 7.
As shown in Figure 2, the mains switch in transportation refrigerating machine of the present utility model comprises input voltage U
in, former limit and secondary all have tapped transformer T, switch element S1, S2, S3, S4, diode D1, D2, D3, D4, inductance L.Above-mentioned switch element is IGBT, and diode is fast recovery diode.
2 elaborate to the power switch structure in transportation refrigerating machine of the present utility model by reference to the accompanying drawings, concrete annexation is: input voltage U
inthe collector electrode of anode connecting valve element S1, S3, input voltage U
innegative terminal connect the negative electrode of diode D1, D2, the emitter of switch element S2, S4; The different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, the tie point of the Same Name of Ends of former limit winding centre tap the first half winding N1 and the different name end of former limit winding centre tap the latter half winding N2 and input voltage U
inanode be connected; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of vice-side winding centre tap the first half winding, the different name end of vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L, the different name end of vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L and load are connected.
Each switch element S1 ~ S4 carries out alternate conduction and shutoff by controller according to the pulse sequence figure of Fig. 3; From circuit structure and above-mentioned pulse sequence figure, at S1, S2 blocking interval, energy in the winding of former limit feeds back to input power by diode D1, D2, and one of them conducting of controller control S3 or S4, resonance circuit is formed by the parasitic capacitance of inductance L and switching tube S1, S2, when the terminal voltage of S1, S2 is 0, conducting S1 or S2, realizes no-voltage open-minded; At S3, S4 blocking interval, one of them conducting of controller control S1 or S2, the resonance circuit formed by the parasitic capacitance of inductance L and switching tube S3, S4, conducting S3 or S4 when the terminal voltage of S3, S4 is 0, thus it is open-minded to realize no-voltage.
Switch element S can replace with MOSFET, and input power is chargeable storage, fuel cell or photovoltaic cell etc.Load can be AC load or further rectification is for DC load, and the form of rectification is all prior aries, repeats no more.
Above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although be described in detail the utility model with reference to above-described embodiment, the those of ordinary skill in described field is to be understood that: still can modify to embodiment of the present utility model or replace on an equal basis, and not departing from any amendment of the utility model spirit and scope or equivalent replacement, it all should be encompassed in the middle of right of the present utility model.
Claims (4)
1. a high reliability transport refrigeration apparatus, comprise compressor, condenser, motor, drying liquid storage device and rapid steamer, described motor is in series with Switching Power Supply, control switch and driver, described control switch adopts IGBT or MOSFET, it is characterized in that, described Switching Power Supply comprises the resonate converter with interphase reactor transformer;
Described resonate converter comprises input voltage Uin, former limit and secondary and all has tapped transformer T, switch element S1, S2, S3, S4, diode D1, D2, D3, D4, inductance L and controller, and each switching tube has antiparallel parasitic diode and parasitic capacitance;
The anode of described input voltage Uin connects the collector electrode of described switch element S1, S3, and the negative terminal of input voltage U in connects the negative electrode of diode D1, D2, the emitter of switch element S2, S4; The different name end of former limit winding centre tap the first half winding connects the anode of diode D1, the Same Name of Ends of former limit winding centre tap the latter half winding connects the anode of diode D2, and the Same Name of Ends of former limit winding centre tap the first half winding N1 is connected with the anode of input voltage U in the tie point of the different name end of former limit winding centre tap the latter half winding N2; The emitter of switch element S1 connects the anode of diode D3, the negative electrode of diode D3 connects the Same Name of Ends of vice-side winding centre tap the first half winding, the different name end of vice-side winding centre tap the first half winding N3 is connected with the Same Name of Ends of vice-side winding centre tap the latter half winding N4, and its tie point is connected with one end of inductance L, the different name end of vice-side winding centre tap the latter half winding is connected with the anode of diode D4, the collector electrode of the negative electrode connecting valve element S2 of diode D4; The emitter of switch element S3 is connected with the collector electrode of switch element S4, and the other end of its tie point and inductance L and load are connected.
2. high reliability transport refrigeration apparatus as claimed in claim 1, it is characterized in that, described driver is DC frequency-changing driver.
3. high reliability transport refrigeration apparatus as claimed in claim 1, it is characterized in that, wherein said each diode is fast recovery diode or Schottky diode.
4. high reliability transport refrigeration apparatus as claimed in claim 1, it is characterized in that, the arbor of described compressor is connected with the rotating shaft on driver by gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520007231.5U CN204597806U (en) | 2014-12-12 | 2015-01-07 | High reliability transport refrigeration apparatus |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420785999 | 2014-12-12 | ||
| CN2014207859990 | 2014-12-12 | ||
| CN201520007231.5U CN204597806U (en) | 2014-12-12 | 2015-01-07 | High reliability transport refrigeration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597806U true CN204597806U (en) | 2015-08-26 |
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ID=53933913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520007231.5U Expired - Fee Related CN204597806U (en) | 2014-12-12 | 2015-01-07 | High reliability transport refrigeration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597806U (en) |
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2015
- 2015-01-07 CN CN201520007231.5U patent/CN204597806U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20170107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |