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Efficient transport refrigeration machine

A technology for refrigerators and compressors, which is applied in the direction of refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of low power density, high loss, switching loss, etc. Effect

Inactive Publication Date: 2015-04-22
GUIZHOU YONGHONG AVIATION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the transport refrigerator using the above-mentioned switching power supply has switching loss, the surge voltage generated when the switching element is disconnected, and the poor working stability of the transport refrigerator caused by voltage instability, high loss, low power density, and long working life. The problem of low reliability

Method used

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] like figure 1 As shown, the transport refrigerator of the present invention includes a compressor 1, a condenser 2, a motor 3, a dry liquid receiver 4 and an evaporator not shown in the figure, and the motor 3 is connected in series with a switching power supply, a control switch and a driver 5 , the switching power supply includes a three-phase resonant converter with a center-tapped transformer, and the condenser 2 communicates with the compressor 1 and the dry accumulator 4 through a conduit 6 . Described compressor 1 is connected with motor 3 (this motor can adopt DC frequency conversion motor) through speed changer 9; or storage battery); when the refrigerated vehicle is parked and turned off, the control switch automatically cuts off the vehicle power supply, and the external mains supply pr...

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Abstract

The invention provides an efficient transport refrigeration machine which comprises a compressor, a condenser, a motor, a drying liquid accumulator, an evaporator, a switch power source connected with the motor in series, a control switch and a driver. The switch power source comprises a three-phase resonant converter with a middle tapped transformer. The efficient transport refrigeration machine is provided with the three-phase resonant converter with the middle tapped transformer, and is low in loss and high in power density, the work life of the transport refrigeration machine can be prolonged, and the reliability of the transport refrigeration machine can be improved.

Description

technical field [0001] The invention belongs to the field of refrigerating machines, in particular to a DC frequency conversion transport refrigerating machine with a three-phase resonant converter of an intermediate tap transformer. Background technique [0002] In recent years, some domestic car and commercial vehicle manufacturers have developed small commercial refrigerated vehicles, which are refitted from cars, vans or commercial vehicles. They are more beautiful than vans, smaller in size, and more suitable for urban distribution. , the future market prospect is considerable. [0003] This type of small commercial refrigerated vehicle has a transport refrigeration unit specially developed for it. The DC inverter transport refrigeration system of the current advanced transport refrigeration unit does not depend on the operation of the engine and does not need to consume fuel; and the car is operated by a generator or The battery power supply is used by the unit; when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/537F25B1/00
CPCH02M3/33523F25B1/00
Inventor 贾希萍王家喜
Owner GUIZHOU YONGHONG AVIATION MACHINERY
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