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Refrigerating apparatus and fluid machine therefor

A technology of fluid machinery and refrigeration equipment, which is applied to composite fluid machinery, controls the operation of refrigeration equipment, and stops the operation of the Rankine cycle. It can solve problems such as damage to electrical parts or devices, out-of-control operation of generators, and rotation of damaged expansion devices.

Inactive Publication Date: 2006-05-17
DENSO CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this happens, noise may be generated at the expansion device and, depending on the circumstances, the expansion device may be damaged
Also, a higher voltage may be generated at the generator, causing a problem that related electrical parts or devices may be damaged
[0015] Even in situations where the operation of the generator is controlled by a signal from a position sensor, if the controller (inverter) for the generator fails, the operation of the generator may become uncontrolled and the expansion device may be accelerated and damaged rotation

Method used

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  • Refrigerating apparatus and fluid machine therefor
  • Refrigerating apparatus and fluid machine therefor
  • Refrigerating apparatus and fluid machine therefor

Examples

Experimental program
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no. 1 example

[0055] The first embodiment relates to a motor vehicle air conditioner in which the hybrid fluid machine 100 of the present invention is applied to a refrigeration cycle 30 having a Rankine cycle 40 .

[0056] First, see figure 1 Describe the structure of the composite fluid machine. The composite fluid machine 100 includes an expansion compressor device 110 that functions as both a compressor device and an expansion device, a motor generator 120 that functions as both a motor generator and a motor, and a refrigerant pump 130 .

[0057] The expansion compressor device 110 has the same structure as a known scroll compressor, and includes a fixed scroll 112 disposed between the front housing 111a and the motor housing 121, a motor that faces the fixed scroll 112 and rotates with respect to the fixed scroll 112. A movable spool 113 , a discharge port 115 for communicating the working chamber V with the high pressure chamber 114 , an inlet 116 and a valve device 117 for opening a...

no. 2 example

[0115] A second embodiment is shown in FIG. 4 , and the difference between this embodiment and the first embodiment is that the air conditioner 1 is applied to a vehicle (for example, an idle-stop vehicle, a dual-power type vehicle), wherein according to the driving state of the vehicle (for example, idling operation, low-speed operation, etc.) temporarily stops the operation of the engine 10 . Another difference between the second embodiment and the first embodiment is that the main compressor device 35 is arranged in the refrigeration cycle 30, and the connection passages 51, 52, and the switching valves 51a, 52a, 53a are provided.

[0116] As mentioned above, the main compressor device 35 is provided in the refrigeration cycle 30 independently of the expansion compressor device 110 . The refrigerant cycle 30 of this embodiment includes a main compressor device 35, a condenser 31, a gas-liquid separator 32, and an evaporator 34, which are connected by lines.

[0117] The ma...

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Abstract

A complex fluid machine has an expansion-compressor device, a pump, and a motor generator, wherein the expansion-compressor device, the pump, and the motor generator are operatively connected and arranged in series, and a power transmitting device for disconnecting the pump from the motor generator, when the expansion-compressor device is driven by the motor generator so as to be operated as a compressor device.

Description

technical field [0001] The present invention relates to a refrigeration apparatus having a refrigeration cycle for performing a cooling operation and a Rankine cycle for collecting waste heat from a heat generating device such as an internal combustion engine. The present invention further relates to a composite fluid machine to be applied to refrigeration equipment, wherein the fluid machine has the role of a compressor device for compressing and pumping out a working fluid and a device for outputting mechanical energy by expanding the working fluid working in a Rankine cycle The role of the expansion device. The invention further relates to a method for controlling the operation of a refrigeration plant, in particular to a method for stopping the operation of a Rankine cycle. Background technique [0002] A composite fluid machine in which a compressor device, an expansion device, a drive motor, and a pump are integrally formed is known in the art, for example, as shown i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B27/02F02G5/00F02G5/02F04C18/02F25B9/06
CPCY02A30/274Y02T10/12
Inventor 宇野庆一麻弘知武内康浩吉田秀治井村彰宏稻叶淳坂鉱一山中隆岩波重树木下宏小川博史
Owner DENSO CORP
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