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Refrigeration device

A refrigeration device and control device technology, which is applied in the direction of household refrigeration devices, refrigerators, refrigeration components, etc., and can solve the problems of increased fuel consumption of engines and deterioration of fuel economy

Active Publication Date: 2019-12-13
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also in this case, if the engine is continuously operated without stopping the engine, the fuel consumption of the engine will increase and the fuel economy will deteriorate.

Method used

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  • Refrigeration device
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Examples

Experimental program
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Effect test

no. 1 approach

[0030] A first embodiment will be described with reference to the drawings. In this embodiment, an example in which a refrigeration device is applied to a refrigerated vehicle will be described.

[0031] Such as figure 1 As shown, the refrigerating vehicle 2 to which the refrigerating device 1 is applied includes a tractor 3 and a trailer 4 . The tractor 3 is equipped with a vehicle running engine 5 . The tractor 3 is a tractor that tows the trailer 4 .

[0032] On the other hand, an interior space 6 for storing goods such as frozen foods is formed in the trailer 4 . The refrigerating apparatus 1 of this embodiment is unitized and attached to a portion of the trailer 4 facing the pulling vehicle 3 . The refrigeration device 1 adjusts the temperature of the interior space 6 of the trailer 4 .

[0033] Such as figure 2 As shown, the refrigeration device 1 includes a refrigeration cycle 10 , a power supply unit 30 for supplying electric power to each component of the refri...

no. 2 approach

[0086] A second embodiment will be described. In the second embodiment, the configuration of the internal temperature sensor is changed from the first embodiment, and the others are the same as the first embodiment, so only the parts different from the first embodiment will be described.

[0087] Such as Figure 4 As shown, in the second embodiment, the interior temperature sensor 23 included in the refrigerator 1 is a blown air temperature thermistor, and is provided on the downstream side of the evaporator 14 . The control device 40 can detect the temperature of the air passing through the evaporator 14 (that is, the temperature of the blown air) using a blown air thermistor.

[0088] In the second embodiment, when the operation mode of the engine 31 is set to the continuous operation mode, the target rotational speed of the compressor 11 is determined based on the temperature of the blown air detected by the interior temperature sensor 23 . Therefore, in the second embodi...

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Abstract

Electric power generated by a generator (32) driven by an engine (31) is converted by an inverter (33) into an alternating current having an arbitrary frequency. A compressor (11) constituting a refrigeration cycle (10) has: a motor (16) driven by electric power supplied from the inverter (33); and a refrigerant compression section (17) rotationally driven by the motor (16) to suck in a refrigerant and compress and discharge the refrigerant. A mode selector switch (44) is capable of selecting between a start / stop operation mode in which the start and stop of the engine (31) is permitted, and acontinuous operation mode in which the engine (31) is operated continuously. When the start / stop operation mode is selected by the mode selector switch (44), a control device (40) controls the inverter (33) so that a target rotational speed of the compressor (11) is affixed at a rotational speed higher than a rotational speed corresponding to the difference between a set temperature (Tset) and anin-compartment temperature (Tret).

Description

[0001] Cross-references to related applications [0002] This application is based on Japanese Patent Application No. 2017-93263 filed on May 9, 2017, the contents of which are incorporated herein by reference. technical field [0003] The invention relates to a refrigeration device. Background technique [0004] Conventionally, there is known a refrigeration device including an engine and a generator for generating driving power for a motor or the like of a compressor constituting a refrigeration cycle. [0005] The refrigeration device described in Patent Document 1 controls the rotational speed of the engine based on the thermal load of the refrigeration cycle calculated based on the difference between the interior temperature and the preset temperature. Accordingly, electric power corresponding to the rotational speed of the engine is supplied from the generator to the motor of the compressor, and the cooling capacity of the refrigeration cycle is adjusted according to ...

Claims

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Application Information

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IPC IPC(8): F25D11/00F25B1/00F25B27/00
CPCF25B27/00F25B49/022F25B2600/021F25B2600/0251F25B2700/2104F25D11/003Y02B30/70Y02B40/00F25B13/00F25B31/026
Inventor 西田泰
Owner DENSO CORP